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AD-A02 478 GEODETIC SURVEY COORDINATES TO SUPPORT GLOBAL POSITIONING SYSTEM TESTS AT YUMA PROVING GROUNDS ARIZONA Defense Mappng Agency Washngton, D. C. October 975 DISTRIBUTED BY: Natonal Techncal Informaton Servce U. S. DEPARTMENT OF COMMERCE

DMA/TR 76402 00 C7C c GEODETIC SURVEY COORDINATES TO SUPPORT GIOEAL POSITIONING SYSTEM TESTS AT YUMA PROVING GROUNDS ARIZONA OCTOIH975 r k luproducch by NATIONAL TECHNICAL INFORMATION SERVICE U S Deportment of Commerce Sprngfeld VA 225 Off ARTMENT OF DEFENSE DEFENSE MAPPING AGENCY WASHINGTON, DC 20305

D D D D DMA/TR 76-002 GEODETIC SURVEY COORDINATES TO SUPPORT GLOBAL POSITIONING SYSTEM TESTS AT YUMA PROVING GROUNDS ARIZONA ü n n OCTOBER 975 DEPARTMENT OF DEFENSE DEFENSE MAPPING AGENCY WASHINGTON, DC 20305 II.

I I E Z Z ::.. ABSTRACT Geodetc and GEOCEIVER surveys were performed by Defense Mappng Agency personnel at Yuma Provng Grounds Arzona to support postonng requrements for Global Postonng System tests and evaluaton. Geodetc feld surveys began In November 974 and ended In February 975. GEOCEIVER surveys were conducted In March and Aprl of 975. Upon completon of these surveys, computatons were made to determne Adjusted NAD 27 and UGS 72 geodetc coordnates for selected survey stes. Yuma local rectangular as well as Unversal Transverse Mercator grd coordnates are also provded... m m IKDM 'E o 49arM*M-~~.. IT....

0 ä Q 0 ;; l CONTENTS Page ABSTRACT ILLUSTRATIONS AND TABLES vl INTRODUCTION DISCUSSION. Geodetc Surveys 2. GEOCEIVER Surveys 2 3. Unversal Transverse Mercator Grd Coordnates 0 4. Yuma Local Rectangular Coordnates 0 5. Yuma Photogrammetr c Data Base 20 SUMMARY 20. 4 REFERENCES 25 :: APPENDIX A. APPENDIX B. APPENDIX C. REPORT ON THE 975 PRECISE GEODETIC SURVEY YUMA PROVING GROUNDS ARIZONA DMAAC 75-5 GEOCEIVER SURVEYS FOR GLOBAL POSITIONING SYSTEM TESTS YUMA PHOTOGRAMMETRI C DATA BASE Precedng page blank

.! ILLUSTRATIONS Fgure Page Yuma Test Staton Stes 7 Relatonshp Between an Earth-centered and a Local Rectangular Coordnate System... 9 Table TABLES Adjusted NAD 27 Coordnates for Yuma Test Staton Stes Derved from NAD 27 Hgh Precson Traverse Coordnates 3 2 Legend for Identfcaton of Yuma Test Staton Stes 9 3 WGS 72 Coordnates for Yuma Test Staton GEOCEIVER Stes 4 Adjusted NAD 27 to WGS 72 Datum Shfts Derved from Yuma Test Staton GEOCEIVER Postons... 5 WGS 72 Coordnates for Yuma Test Staton Stes Derved from Four GEOCEIVER Postons 2 6 Unversal Transverse Mercator Grd Coordnates for Yuma Test Staton Stes Derved from Adjusted NAD 27 Coordnates 6 7 Coordnates for Yuma Test Staton Stes Referenced to a Local Rectangular Coordnate System 2 v

UNC ASSI Flg.) SECURITY CLASSrCATIO.rOF THIS PAOt (Wht Dm Knftmd) REPORT DOCUMENTATION PAGE READ INSTRUCTIONS BEFORE COMPLETING FORM. RCRORT NUMBER DMA/TR 76-002 2. GOVT ACCESSION NO 3. RECIPIENT'S CATALOG NUMBER 4. TITLE fand SubllU») GEODETIC SURVEY COORDINATES TO SUPPORT GLOBAL POSITIONING SYSTEM TESTS AT YUMA PROVING GROUNDS ARIZONA S. TYPE Of REPORT A PERIOD COVERED FINAL t. PERFORMING ORG. REPORT NUMBER 7. AUTHORf«) S. CONTRACT OR GRANT NUMBER^«) S. PERFORMING ORGANIZATION NAME AND ADDRESS Defense Mappng Agency US Naval Observatory, Bldg 56 Washngton, DC 20305. CONTROLLING OFFICE NAME AND ADDRESS Defense Mappng Agency/PRA US Naval Observatory, Bldg 56 Washngton. DC 20305 0. PROGRAM ELEMENT. PROJECT, TASK AREA A WORK UNIT NUMBERS 2. REPORT DATE October 975 IS. ^JjBE BER OF PAGE *n*> U. MONITORING AGENCY NAME S ADDRESSCIf dlltornl from Confrollfn«Olllc*) IS. SECURITY CLASS, (of Ma report; IS. DISTRIBUTION STATEMENT (ol hl Rtporl) UNCLASSIFIED ISa. DECLASSIFlCATION/DOWNGRADING SCHEDULE Approved for publc release; dstrbuton unlmted { ', DISTRIBUTION STATEMENT (ol lha abttrmel antarad In Block 20, If dlffaranl from Rapor) It. SUPPLEMENTARY NOTES IS. KEY WORDS fcontnua on ravaraa alda If naeaaaary and Idanflfy by block numbtt) Geodesy Geodetc Survey GE0CEIVER Survey Yuma Provng Grounds WGS 72 Coordnates 20. ABSTRACT fconllnua on ravaraa alda If naeaaaary and fdandfy by block numbar; Geodetc and GE0CEIVER surveys were performed by Defense Mappng Agency personnel at Yuma Provng Grounds Arzona to support postonng requrements for Global Postonng System tests and evaluaton. Geodetc feld surveys 'began n November 974 and ended n February 975. GE0CEIVER surveys were conducted n March and Aprl of 975. Upon completon of these surveys, computatons were made to determne Adjusted NAD 27 and WGS 72 geodetc coordnates for selected survey stes. Yuma local rectangular as well as Unversal Transverse Mercator grd coordnates are also provded. DD.^r, 473 EDITION OF I NOV 65 IS OBSOLETE I«UNCLASSIFIED SECURITY CLASSIFICATION OF THIS PAGE (Wan Oafa Enlarad)

I GEODETIC SURVEY COORDINATES TO SUPPORT GLOBAL POSITIONING SYSTEM TESTS AT YUMA PROVING GROUNDS ARIZONA INTRODUCTION Precse geodetc postons for selected survey stes at U.S. Army Provng Grounds, Yuma, Arzona (YPG) are requred to support. : Global Postonng Systems (GPS) tests and evaluaton. Due to strngent postonng requrements, precse geodetc surveys as well as GEOCEIVER derved postons are requred n order to provde not only accurate relatve geodetc postons but also GEOCEIVER derved converson parameters to obtan precse World I Geodetc System 972 (WGS 72) coordnates for the proposed test stes. The geodetc surveys were performed by personnel of the Defense Mappng Agency Topographc Center (DMATC) and the GEOCEIVER surveys by the Defense Mappng Agency Aerospace Center/Geodetc Survey Squadron (DMAAC/GSS). Pertnent nformaton regardng both the geodetc and the GEOCEIVER surveys are ncluded n ths report as Appendces A and B, respectvely. Appendx C descrbes the Yuma Photogrammetrc Data Base from whch addtonal postonal data can be derved. DISCUSSION. Geodetc Surveys Geodetc surveys were requred to supplement exstng survey data n the YPG area. Ths survey ncluded addtonal astronomc poston and azmuth determnatons, Geodmeter observatons, measurements of horzontal drectons and dfferental levelng. An adjustment of all of the avalable survey data was made holdng I.

fxed the geodetc lattude U) and longtude (A) of two statons, PGT 2 AMS 60 and PGT 3 AMS 60, to the Natonal Geodetc Survey (NGS) Precse Geodlmeter Traverse (PGT) North Amercan Datum 927 (NAD 27) coordnates. Snce the orgnal NAD 27 coordnates for these two statons are not Identcal to those derved through the PGT, the NAD 27 coordnates determned through the PGT wll be referred to as Adjusted NAD 27 coordnates. A comparson of common horzontal control staton coordnates Indcates that a change of approxmately 0'.'09 and -0''26 can be expected In geodetc lattude and longtude, respectvely. In the sense old (NAD 27) mnus new (Adjusted NAD 27). The Adjusted NAD 27 coordnates for 65 stes In the YPG area are tabulated n Table. Table 2 provdes a legend for dentfyng the Yuma Test Staton stes as portrayed n Fgure. The Crcular Standard Error (CSE) for the horzontal postons of the Adjusted NAD 27 coordnates lsted n Table are based on the results of the adjustment of the survey data. Vertcal poston errors are not lsted because they were not avalable for all stes. Table 3, Appendx A, lsts the standard error of the geodal separaton as derved from the adjustment statstcs for 7 of the YPG stes relatve to the geod heght at PGT 2 AMS 60 whch was held fxed. These geodal separaton errors represent the total vertcal poston error snce levelng errors are consdered to be neglgble (less than 2 mm maxmum standard error). 2. GEOCEIVER Surveys In order to establsh precse datum shfts for the converson of the Yuma Test Staton stes from Adjusted NAD 27 to WGS 72 four

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% I: Fnure. Yuma Test Staton Stes 7

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?.* (*» ' <*«^ ' -* v J, W! -. * V. "Ml ' N 'N! survey stes were occuped and postoned usng standard GEOCEIVER J technques. GEOCEIVER statons 0009. 023, 00. and 002 were located at survey statons Identfed as SITE 9 DISC YPG. SITE 7 DISC YPG. 00 DMATC 74. and 002 DMATC 74. respectvely. The days of observaton, number of passes and the WGS 72 postons derved from the GEOCEIVER data are shown In Table 3. Mean rec- u tangular coordnate shfts shown In Table 4. along wth approprate ellpsod parameters dfferences, were appled to the Adjusted, NAD 27 coordnates of Table to obtan WGS 72 coordnates for the ^ Yuma Test Staton stes. The resultng WGS 72 coordnates are lsted In Table 5. The CSE Is not repeated In Table 5 because the converson to WGS 72 coordnates does not affect the relatve horzontal poston accuracy of the statons. The standard devatons n Table 4 represent the standard error of the converson shfts used to convert from Adjusted NAD 27 to WGS 72 coordnates. 3. Unversal Transverse Mercator Grd Coordnates I Unversal Transverse Mercator (UTM) grd coordnates were computed from the Adjusted NAD 27 coordnates lsted In Table. These coordnates are lsted n Table 6. 4. Yuma Local Rectangular Coordnates The Yuma local rectangular coordnate system s defned to have ts orgn at the Yuma Test Staton ste dentfed by the name IRCC DMATC 74. The X and Y axes of ths coordnate system are n the local horzontal plane wth the X axs postve east and the Y axs postve north. The Z axs s concdent wth the geodetc normal to the WGS 0

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72 ellpsod at the orgn pont. Ths coordnate system Is Illustrated In Fgure 2. The converson from WGS 72 geodetc coordnates to Yuma local rectangular coordnates can be accom- plshed usng the followng equaton: V 0 0 -sn \ 0 cos XQ 0 F x - Xo "l. z. s 0 sn *o cos t 0 -cos Xo -sn Xo 0 y - yo 0 -cos $ sn to w 0 0 0 Z - zo or conversely by the equaton: " x -sn A 0 -cos X D 0 "l 0 0 " x " xo y = cos x 0 -sn x 0 0 0 sn to -cos to Y + yo. 2. where: 0 0 0 cos to sn 4*0 \ zo x f y, Z. = Yuma local rectangular coordnates for staton. Vy,. z. = rectangular coordnates for staton n an earthcentered rectangular coordnate system (WGS 72), XQ. yo, ZQ rectangular coordnates for the orgn staton (IRCC DMATC 74) n an earth-centered rectangular coordnate system (WGS 72). to«xo WGS 72 geodetc lattude and longtude, respectvely, of the orgn staton (IRCC DMATC 74). To obtan earth-centered rectangular coordnates (x, y, z) from geodetc coordnates - lattude (t), longtude (x), and geodetc heght (H) the followng equatons may be used: 8

I I a, local orgn -geodetc heght geocentrc orgn Fgure 2. Relatonshp Between an Earth-centered and a Local Rectangular Coordnate System. 9

x = (N + H) cos $ cos A y = (N + H) cos $ sn.\ z = [N ( - e 2 ) + H] sn * where: N = a ( - e 2 sn 2 $)* a = sem'najor axs of the reference ellpsod e = eccentrcty of the reference ellpsod The Yuma local rectangular coordnates for the Yuma Test Staton stes are lsted n Table 7. 5. Yuma Photogrammetrc Data Base A Photogrammetrc Data Rübe s avalable for dervng postonal data n the YPG area. Techncally, ths data base provdes a means by whch any YPG pont that can be photogramrnetrcally dentfed can also be postoned wth respect to WGS 72 provded accuracy requrements are wthn those achevable,.e., a CSE of about.5 meters and a vertcal standard error of about 2 meters. In addton, anyone requestng that a pont be postoned must, provde an aeral photograph dentfyng the exact pont to be postoned. The dentfcaton photograph should have suffcent detal to facltate dentfcaton on the data base photography of the pont to be postoned. SUMMARY The geodetc survey performed at YPG and the subsequent adjustment yelded very precse geodetc coordnates for the Yuma Test Staton stes. These Adjusted NAD 27 coordnates provde 20

"'n lln« Table 7 COORDINATES FOR YUMA TEST STATION SITES REFERENCED TO A LOCAL RECTANGULAR COORDINATE SYSTEM I I I I X I Staton I Name X (meters) Y (meters) Z (meters) I PGT 2 AMS 60 8359.42-999.528 02.884 PGT 3 AMS 60 2946.927 24633.74 340.242 HILLTOP USC6S 49 9050.042 96 '.666 79.530 j MPS 25 DMATC 74 33.037-2899.29 7.726 BENCHMARK USCGS 34 822.09-22884.07-0.566 SITE DMATC 74-257.07-6604.928 2.60 SITE 2 DMATC 74-262.390-8284.335-2.333 I SITE 3 DMATC 74 5257.04-946.24 8.937 SITE 6 DISC YPG 40.627-6492.607 47.848 SITE 7 DISC YPG 232.68 693.45 35.792 j SITE 8 DISC YPG 3774.7 6782.49 75.583 SITE 9 DISC YPG 4263.833 220.042 29.260 SITE 0 DISC YPG -986.538 248.890-4.608 SITE DISC YPG -2779.663 27.800-28.360 SITE 2 DISC YPG -5974.628 242.733-44.203 IR 2 DMATC 74-323.757 964.78-3.2 IR 22 DMATC 74-3963.435 267.9 63.560 IR 22R TC 75-3626.85 307.476 24.052 j IR 23 DMATC 74 376.944 404.94 8.93 j IR 24 DMATC 74 3657.855-59.87 48.535 *IRCC DMATC 74 0.000 Ü.000 0.000 CM 8 YPG 2530.308 473.00 05.433 CM YPG 69.240 8376.635 55.74 j SITE 5 969 YPG 8354.826-0036.63 96.949 002 DMATC 74 8495.509-9924.287 05.600 ; *THIS STATION IS THE COORDINATE SYSTEM ORIGIN 2

Table 7 (Cont'd) COORDINATES FOR YUMA TEST STATION SITES REFERENCED TO A LOCAL RECTANGULAR COORDINATE SYSTEM Staton I Name X (meters) Y (meters) Z (meters) I 000 DMATC 74 2402.24 699.34! 40.26 j CAMERA SITE 4 95.000-2852.974 9.435 j LASER SITE 7 244.246 698.090 44.2 CT SITE 2-2623.338-8283.689-0.63 j CT SITE 5 8350.873-00?8.529 98.648 j CT SITE 6 403.653-6490.698 40.52 CT SITE 8 3779.80 6772.94 77.395 CT SITE 9 4260.590 227.438 30.836 CT SITE 0-98.763 250.769-2.996 CT SITE -2779.380 24.073-26.068 CT SITE 2-5977.459 240.979-42.582 SITE MON -2776.79 235.020-3.750 LASER DISC SITE 2-5884.797 260.423-47.782 j LASER DISC SITE 9 4556.238 24.623 32.663 LASER DISC SITE 7 2408.63 695.00 40.430 I 00 DMATC 74-597.940 266.483-44.960 TOP 070 2468.669 097.66 35.376 TOP 0702 2383.658 0679.608 02.480 TOP 0703 68.203 8384.032 56.983 I TOP 0704-2885.09 3689.054 83.66 TOP 0705-5289.5 8906.028 37.427! TOP 0706 77.59 728.886 7.823 TOP 0707-388.45 346.640-9.58 j TOP 0708-90.870 88.777-3.88 t I L U u. LI 22

I mm m * Table 7 (Cont'd) COORDINATES FOR YUMA TEST STATION SITES REFERENCED TO A LOCAL RECTANGULAR COORDINATE SYSTEM Staton Name X (meters) Y (meters) Z (meters) TOP 0709-285.483-886.435-4.869 TOP 070-253.978-6608.507 4.34 j TOP 07 2342.735-2.902 43.537 j PEF 072 3770.32 038.620 47.562 PEF T3 2097.6 957.989 40.00 PEF SOCL -409.228-59.88 -.979 PEF NOCL -999.644 767.909 35.38 TOP 20-6808.777 493.273-44.330 TOP 202-6797.764 3.786-3.924 j TOP 203-6623.485 800.79-32.90 j TOP 204-6244.936 226.738-26.403 TOP 205-5986.348 259.987-27.327 TOP 206-5578.394 269.02-24.033 I TOP 207-52.307 2083.473-35.657 TOP 208-4565.076 506.828-37.862 TOP 209-4874.h 93.742-43.573 *.* 23 -

n->.. nf., I,, j relatve horzontal and vertcal postons wth accuraces that are representatve of the state-of-the-art In geodetc postonng. u Ths relatve postonng accuracy s mantaned under trans- formatons to other coordnate systems such as WGS 72 or the Yuma local rectangular coordnate system. The addtonal GEOCEIVER survey provded a means by whch the local survey can be accurately related to WGS 72. The accepted accuracy for GEOCEIVER derved u LI surveys [] s.5 m n each coordnate at 90% confdence whch s equvalent to a standard error of 0.8 m. Ths accuracy s not sgnfcantly dfferent from the accuracy mpled by the standard devatons from the mean of the lmted sample of Table 4. These accuracy fgures Indcate that the WGS 72 coordnates for any and/or LI D all of the Yuma Test Staton stes have a standard error of approxmately m n each coordnate. The standard error of WGS 72 postons n the NAD 27 area wth respect to the earth's center of mass Is estmated to be 5 m n each component [2]. LI LI 24

MMIM«.-». r l.,', J.St...--: '. *. -- ' 4 REFERENCES. DMA Report 000; Report of the POD Geocever Test Program; Defense Mappng Agency, Washngton, D.C.; July 972. [Prepared by Appled Physcs Labaroatory, The Johns Hopkns Unversty; Slver Sprng, Maryland.] 2. World Geodetc System Commttee; Department of Defense World Geodetc System 972; Defense Mappng Agency; Washngton, D.C; May 974. [Presented by Thomas 0. Seppelln at the Internatonal Symposum of Problems Related to the Redefnton of North Amercan Geodetc Networks, Frederlcton, New Brunswck, Canada.] n.. 25

D D U D D : D...: PURPOSE AND SCOPE REPORT ON THE 975 PRECISE GEODETIC SURVEY YUMA PROVING GROUNDS ARIZONA Defense Mappng Agency Topographc Center (DMATC) was drected by HQ DMA In November 974 to perform the necessary geodetc survey at Yuma Provng Grounds (YPG) to support the upcomng Global Postonng System (GPS) Inverted range tests. DMATC, In November 974, coordnated project detals wth YPG personnel and performed reconnassance on a tentatve survey network whch was accepted when a smulated adjustment Indcated that the strngent accuraces requred would be met. Fgure shows the horzontal and vertcal networks but does not show the laser and clnethecdollte calbraton lnes. The scheme for laser and cnetheodolte calbraton lnes had not been fnalzed when these results were obtaned. Those lnes wll be dscussed In a supplemental report. DMATC feld partes began the feld work on 2 November 974 and termnated feld operatons on 8 February 975. The followng work was accomplshed: ASTRONOMIC POSITIONS - 6 modfed frst order statons DISTANCES - 58 precse lengths DIRECTIONS - 22 frst order drectons ASTRONOMIC AZIMUTHS - 2 lnes SITES OCCUPIED - 2 Transcontnental Traverse Statons 25 Prmary Network Statons 2 Secondary Statons (CM-, CM-8) DIFFERENTIAL LEVELS SECOND ORDER - 49 klometers (see Table 4) SPECIFICATIONS ' * -. Project specfcatons requre relatve errors, ( slgma), of Ippm + 2cm for the horzontal postonng. The vertcal accuracy (elllpsold elevatons) requrement for the prmary ponts Is also Ippm* + 2cm, ( slgma). The azmuth and elevaton angles of the laser and clnetheodollte calbraton lnes are to be wthn 3 arc seconds. DESCRIPTION OF FIELD WORK Astronomc Postons Modfed frst order observatons (one nghts work) were made at t. m *The rato of the relatve vertcal error to the dstance between any two ponts n the net. A-l

_-. -. je_^_ 6 network statons. All equpment was calbrated pror to, and at Intervals durng the project to mnmze any systematc errors. Two other astros (PGT 2 and PGT 3) prevously observed by Natonal Geodetc Survey (NGS) on the Transcontnental Traverse (IT) were accepted as gven. Precse longtudes were determned by observng the merdan transts of fundamental catalog (FK 4) stars usng a Wld T-4 Unversal Theodolte. Tmng was from the dgtal prntout of the Datametrlcs Electronc Tmng System, whch was set to coordnated Unversal tme (UTc). The largest standard devaton for any sngle longtude determnaton Is O'.'lS and the average of all the standard devatons Is 0"l4. (see Table ). Precse lattudes were determned by observng the zenth dstances of fundamental catalog (FK 4) stars at the tme of ther merdan transts usng a Wld T-4 Unversal Theodolte. The largest standard devaton for any sngle lattude determnaton s 0"23 and the average of all standard devatons s 0"l3. (see Table ) Horzontal Drectons and Astronomc Azmuths The horzontal survey was accomplshed usng the NGS specfcatons (as amended n ths paragraph) for the super-precse TT. Because the network contans a large amount of redundancy (number of degrees of freedom) the specfcatons for drectons and azmuths could be relaxed from two nghts of observatons to one nght and stll meet the accuracy requrement cted under specfcatons. Astronomc azmuths were observed concurrently wth the observatons for horzontal drectons at 2 of the 25 prmary statons. Wld T-3 theodoltes were used for the observatons after tests had been performed whch ndcated that mperfectons n the lnearty of the vertcal axs (trunnon rregulartes) were not excessve. At least one set of 6 postons was made to all traverse statons and on Polars. Addtonal observatons were made n cases where acceptable closures appeared to be margnal. The largest standard devaton for any sngle azmuth determnaton s 0"62 and the average of all standard devatons s O'.^O. (see Table ) Elevatons The sprt levelng (dfferental levelng), was accomplshed to standard second order specfcatons. The allowable crcut msclosure s 8.4mm tmes'vlt. K s the length of the crcut n klometers. Elevatons were carred from bench marks to prmary statons wth the same accuracy. A-2

^W W» «a>asu.t...-! v-"j.. Ü u LJ U I I j Geodlmeter Measurements All dstances greater than 2 klometers were measured wth laser geodlmeters (model 4 and 8). Each lne between statons conssts of at least two sets of four measurements each. Each set contans two measurements wth the reflectors eccentrc forward and two measurements wth the reflectors eccentrc rearward. On lnes where the elevatons of the end ponts exceed 300 meters, zenth dstances were measured on each end of the lnes before and after each set of geodlmeter measurements. The mean of the before and after zenth dstances was used to compute a refractve ndex rate correcton for each end of the lne. At the tme of each measurement a frequency count was taken whch was used to compute a correcton for the varaton of frequences. Meteorologcal data at each end of the lne conssted of altmeter readngs, wet and dry bulb temperatures, and the ambent temperature at the heghts of 5 and r.5 feet above the statons before and after each measurement. The geodlmeters were calbrated before the project was started. The zero constant for each nstrument was determned before and after the completon of the project. A summary of the measurements and nstrument comparsons are gven n table 2. On lnes shorter than 2 klometers (wth one excepton) the MA-00 Tellurometer was used. At least 2 sets of measurements were taken on each lne... Computaton of Geod Heghts II COMPUTATION AND ADJUSTMENT Deflectons of the Vertcal «ere obtaned from prelmnary geodetc postons and the astronomc postons. Geod heghts were computed at each network staton by the method of least squares. The geod heght at staton PGT 2 resultng from the NGS adjustment of the Transcontnental Traverse was held fxed. The small varaton n geod heghts (less than one meter) precluded a need for an teraton of the geod adjustment after the network adjustment. The adjubted geod heghts resulted n an average length correcton to reduce from geod to ellpsod of part n 284,000. Horzontal Control Adjustmen The network was adjusted by the method of varaton of coordnates. A seres of adjustments were made to obtan optmum weghts for the observatons. The frst adjustment was made wth weghts derved from the followng a pror estmates of the standard devatons: Drectons 0.6 Azmuths : ll'o Lengths : 6mm + Ippm A-3

The standard devaton of an observaton of unt weght ( o) for the adjustment was.2. Ths value was wthn the 95% confdence nterval for chl-square (X ) but near the upper lmt. A successon of adjustments were made usng drectons only, then drectons and dstances; and fnally drectons, dstances, and azmuths. Weghts were vared after each adjustment to yeld a QQ approxmatng unty. A summary of each adjustment s gven n the table below: ADJ. NO. ö(dir) er r LENGTH) 0(2.)! a o n-u 95% x» INTERVAL } lmm+ 6mm+ mm+ I ol'e ppm l"0.2 08 0.75-.28 2 0.6 0 ' 98 4 0.62-.48 \ 3 0.6 ;.24 9 0.73-.3 4 0.6 2 \.09 9 0.73-.3! 5 0.6 2.4.05 08 0.75-.28 \ 6 0.6 2.0 I.03 8 0.76-.28 I n-u = deg rees of Freedom. The Imra part of the drecton and azmuth errors represent the uncertanty n nstrument and target placement. The addtonal degrees of freedom shown wth adjustment 6 results from the addton of several spur lnes to the fnal adjustment. Relevant statstcs from the fnal adjustment are gven n tables 5 and 8. The Transcontnental Traverse postons of statons PGT 2 and PGT 3 were held fxed n the adjustment. The postons of the network are referenced to the North Amercan 927 Datum orgn as transported through the Transcontnental Traverse. Comparson wth NAD 927 coordnates derved from trangulaton are gven n table 6. Adjustment of Elevatons The levelng network was adjusted by the method of least squares usng observaton equatons. The elevaton of a recovered bench mark (3 + 7208) n the southeast part of the net was held fxed n the adjustment. The standard error n an observaton of unt weght was.4 mllmeters. The maxmum standard error n an adjusted elevaton was.8 mllmeters. Detal; and a dagram of the levelng net are gven n tabled. Comparson of newly determned elevatons wth publshed elevatons at recovered statons are gven n table 7. RESULTS Fgure 2 s a geod profle of the surveyed area. The "flatness" of the geod n the area (varaton of one meter n 000 square klometers) wll yeld a hgh nterpolaton accuracy. Fgures 3 and 4 are contours of the astro-geodetc deflecton of the vertcal components. A-4

Pages A-l8 through A-5 contan the staton descrpton cards (DA form 959) wth Geodetc Coordnates, MSL Elevatons, UTM grd coordnates, and YPG grd coordnates. Q ] D I] Ü Pages A-52 through A-5'* contan Geocentrc Coordnates and Ellpsodal Postons. Pages A-55 through A-TO contan the astronomc poston and azmuth results cards. Pages A-7 through A-96 contan the level lne descrptons. Pages A-9T through A-99 contan a tabulaton of elevatons from the level lne adjustment. Note that usable wdth of feld necesstated abbrevaton of some staton desgnatons. ANALYSIS Staton IR 22 R replaces IR 22 as an nverted reuge staton. Specfcatons were met or exceeded n all cases. Table 8 gves the crcular standard errors of the adjusted horzontal postons and correspondng values from the smulaton. The hgh correlaton between the smulaton and adjustment Justfes the specfcatons used n the feld work. The largest postonal error n the ad- Justed networv s 0.027m at CM 8 YPG. Ths s less by a factor of 2.6 than the accuracy requred (0.070m) at that staton. LJ The error n Ellpsod heght s gven by o = "xl 0 +0.2 Ü Ü ;:.. Where: o N = Error n Geod heght o = Error n levelng Snce the maxmum error n levelng s less than 2nm ts contrbuton to a s neglgble and o T =a. The maxmum value of a. T s 0.028 H H N N meter at PGT 3. Ths compares wth a requred accuracy of 0.055 meter at that pont. The followng emprcal formula yelds the relatve accuracy between any two ponts n the net: a c 0.89 = 0.027(S) Where: a s the crcular standard error n meters Q S s the dstance between ponts n klometers. The results of the survey yelds a basc framework for exstng and future YPG control requrements. A-5

:.l TABLE GPS-YPG 975 PRECISE GEODETIC SURVEY Standard Devatons of the 975 DMATC Astronomc Poston and Azmuth Determnatons. Staton o ox oa HILLTOP USCGS 9U9 OVlJ* 0V 0V62 BENCH MARK USCGS 93 + 0.0 0.2 0.26 MPS 25 DMATC 97^ 0.5 0.2 0.35 SITE DMATC 97^ 0.0 0.2 0.35 SITE 2 DMATC 97^ 0.3 0. 0.5 I! LI U : J SITE 3 DMATC 97 * O.lU 0.k 0.32 SITE 6 DISC YPG 0.2 0.8 0.4 SITE 7 DISC YPG 0.3 0.8 0.62 SITE 8 DISC YPG 0.2 0.6 O.kk SITE 9 DISC YPG 0.23 0.k 0.+3 SITE 0 DISC YPG 0.3 0.6 0.U7 SITE DISC YPG 0.0 0.7 0.k9 SITE 2 DISC YPG 0.2 0.0 0.35 IR 22 DMATC 97 t 0.3 0,2 0.38 IR 23 DMATC 97^ 0.3 0.8 0,25 IR 2k DMATC 9k 0.3 0.3 0.27 A-6

* JKf.+Ä.. ü ü u ü - * H a r- a h a u C (0 - * m c - o * * *' Kl (M n «M <n.* f * o r X * ff o - d n t X d + CM» O N H f- CM* * A n * -M ff * n c a: - - o o ffl c ffl * * CM d r- X W ff R ffl <n CM Pl n * t 0 ff CM CM * CM <c o a F5 x * e o a r- -< * a n IN + o + ae <n s (0 n * n X CM f n n o c X o o - ffl n * a. CM* c + n ff) ^ r^ X IC C r* (0 - * 3 e CM CM. «ll Uv M t- a B 3 w M lf] ^ l A - ^ * I 2 O s ft X n n 5 :»n o O o o e n O (- + + + 8 E «I 5 X n o ffl -N N (M X * T o l o CM es 0 n X X 0 n X T N c A T' 8 t ff N M.0 n X (M Ml CM 2 * = 8 T X ff. CM X 2 CM o «0 d a»n n X» X tm m ff' X CM'? * CM ffl «n '. X ff c X 8 n C-J r- Ö j n c ff X g CM ff! N ff. (T 0 CM f s x' d * * n rm X CM X r- CM «0 CM ff X X n 4 j X CM c! d N n 0 s s m n n CM X r- N X * * «M* X >n N c c 8 s n o CM n *» ff. X 8 r-' CM (C m c g (C O X (C X n X ' '. M ff 5 M * [ * b> \ j S t X B J f 3 <N w h tn CM E H to n s n N ft 6 * - J a L W H W E N tf - r E n CM w H tf s N g (f J H f N (f P u H E X M (f f^ u H 0 H H E «ff - w t a Ul F E E /3 n X X Ul N 5 ü B - X Ul (-!f 0 M P 0 Ul t- (f r 8 * E UJ Ul f- «Ün a ul Ul H N M P CM Ul f- fl E - M CM E X Ul H CM Ul c Ul p (f E Ifl t» CM Ul p N U. BE 0 ü CM c w Bl c dl H Ul H 8 -- CM CM 0 0 Ul l- w CM K aa Ul F v; et CM o. e B CM CM X c B s E ff H P - X. (X - M CM X «a CM CM a. A-7

' " TABLE 3 GPS-YPG 975 PRECISE GEODETIC SURVEY Geodal Separaton Adjustment Statstc: Geodal Sepa ratl on Sgma Staton (meters) (meters) PGT 2-22.40 FIXED PGT 3-2.86 0.028 HILLTOP -22.2 0.02 BENCH MARK -22.63 0.07 MPS 25-22.60 0.04. SITE -22.68 0.04 SITE 2-22.68 0.05 SITE 3-22.48 0.09 SITE 6-22.48 0.02 SITE 7-22.44 0.02 SITE A -22.32 0.09 SITE 9-22.22 0.08 SITE Ü -22.56 0.024 SITE -22.63 0.03 SITE 2-22.68 0.026 IR 22-22.82 0.022 IR 23-22.25 0.06 IR 24-22.49 0.020 No. of Equatons = 46 Max. Resdual ^ -0. 07 meters Avg. Resdual a 0. 09 meters (J a 0. 03 meters A-8

D TABLE 4 GPS-YPG 975 PRECISE GEODETIC SURVEY U Ü u Ü LI Second Order Dfferental Levels Adjustment Statstcs No, of Fxed Marks No. of Monumented Bench Marks No. of Temporary bench Marks Nu. of Observatons No. of Klometers No. of Crcuts Maxmum Correcton to an Eleva on Averare Correcton to an Elevaton Loop Closure \ - Length of Loop Allowable Error Loop Closure n - Length of Loop Allowable Error 4.7Smm 55.8km fl2.75nm -24.2mn 70.68km 70.62mm Loop Closure 7.5mm Length of Loop 9.55km Allowable Error ;57.4mm 2 00 7 56 48. 92 3 (Closures gven below) 22. 5 mm. mm. mm A-9 3+7208

! TABLE 5 GPS-YPG 975 PRECISE GEODETIC SURVEY Statstcs on Computatons Number of Fxed Statons Number of Adjustable Statons Number of Observatons M n Drectons 2 27 20 22 u u t Measured Lengths 58 Observed Azmuths Total Number of Trangles Maxmum Trangle Closure Average Trangle Closure Maxmum Correcton to Drecton " Length " Azmuth 2 4 2 "9 5 :'02 2:, 07.4 ppm 2'.'06 I I Standard Error n an Observaton of Unt Weght (a 0 ).03 I A-0

* 0 TABLE 6 GPS-YPG 975 PRECISE GEODETIC SURVEY u LJ U U Comparson at Common Horzontal Control Statons of Prevously Establshed 9?7 NAD Coordnates wth the Values Resultng from ths Survey. Staton HILLTOP USC&GS 949 BENCH MARK USC&GS 934 CM YPG CM 8 YPG A?K0d-New) +0,., 0875 +0.0957 +0.09 +0.0894 AX(Old-Nev) -0,., 2645-0.2636-0.2609-0,2635 SITE MONUMENT +0.0934-0.267 A-ll

U TABLE 7 GPS-YPG 975 PRECISE GEODETIC SURVEY Prevously Publshed at Common Ponts Elevatons Comp ared wth ths Survey's Results Staton Old (meters) New (meters) Old-New (mllmeters) USE 44+45.07 97.9789 97.9635 + 5.4. USE 80+00.0 02.5855 02.575 + 0.4 USE 75+00.0 03.485 03.4403 + 8.2 USE 90+00 06.9967 07.788-82. TR-28 USGS '34 267.392 267.4097-7.S TR-27 USGS '34 28.4998 28.5099-0. TBM 08 USGS '34 30.278 30.2559 + 5.9 TK-25 USGS '34 298.8795 298.870 + 8.5. TR-40 USGS '34 257.380 257.20 + 7.0 20-M USGS '25 73.7683 73.7757-7.4 2 4-M USGS '25 29.405 29.3807 + 20.8 23-M USGS '25 25.5^43 25.637-29.4 A-2

.t., " n a D Ü Ü LI L. r TABLE 8 GPS-YPG 975 PRECISE GEODETIC SURVEY Comparson of Smulated and Fnal Adjusted Crcular Standard Errors Staton PGT 2 AMS 60 FIXED PGT 3 AMS 60 HILLTOP USC&GS 49 MPS 25 DMATC 74 BENCH MARK C&GS 34 SITE DMATC 74 SITE 2 DMATC 74 SITE 3 DMATC 74 SITE 6 DISC YPG SITE 7 DISC YPG SITE 8 DISC YPG SITE 9 DISC YPG SITE 0 DISC YPG SITE DISC YPG SITE 2 DISC YPG IR 2 DMATC 74 IR 22 EMATC 74 IR 22R TC 75 IR 23 DMATC 74 IR 24 DMATC 74 IRCC DMATC 74 CM 8 YPG CM YPG SITE 5 969 YPG 002 DMATC 74 000 DMATC 74 CAMERA SITE 4 SITE MON 00 EMATC 74 Smulated Arc Path (Km.)* CSE** PPM 7.46 7.46 32.94.020 0.6 25.39 3.9.08 0.6 29.88.03 0.4 28.57.00 0.4 20.67.006 0.3 23.63.009 0.4 36.2.05 0.4 42.45.09 0.4 47.79.022 0.5 32.83.05 0.5 34.89.05 0.4 35.68.06 0.5 38.45 43.79 43.55 48.66 24.3 34.42 50.48.024 0.5 46.52.024 0.5 7.50 7.6 36.2 25.77.00 0.4 34.89 35.68 Fnal CSE PPM.025 0.8.00.022 0.4 0.7.05 0.5.02 0.4.007 0.3.00 0.4.07 0.5.022 0.5.025 0.5.07 0.5.07 0.5.08 0.5.07 0.4.024 0.5.024 0.6.024 0.5.0 0.5.07 0.5.027 0.5.025 0.5.00 0..00 0..07 0.5.0 0.4.07 0.5.08 0.5. * arc path dstance from the center of gravty of the fxed statons **meters A-3,

... ^... rfc.m,,» l...^,?., v. 5^;» l..-.- _ y.'-.j. ' -..-.,»--. J[.. -.»- -. ^ W fl <k. '... t^, TTT '»»T "*ff FIGURE u GPS-YPG 975 PRBCISE GEODETIC SURVEY Ü Ü 0 Ll L U I a m PMVf fnini MUNTIl M fqinil MTMIIET FNTH MftlTIIUME STSIUTBTS «IIIKU HKI UM m m NntM ^ UMta tm MMMnt ctm«mm«^ MWMRM CMTMl ITMIM A-4

D D MMM MBMl FIGURE 2 L-^-t GPS-YPG 975 PRECISE GEODETIC SURVEY - u m mua mt A-5

FIGURE 3 u GPS-YPG 975 PRECISE GEODETIC SURVEY u u u. J LJ YIMA PMVMC 6 UTM UIHTK KflECTMn II2TIU lemmm CWrtltlT cohtom rnmu. = o.$ uc SKOM ^ wua urn MWMIU com«mm /\ MMMIM cwtm ntnw TMII CNTONI Ml rmmm MM»«t«Mtm»» m mta»mwh A-6

,«.- Ill, I I.,_ - r- s FIGURE 4 GPS-YPG 975 PRECISE GEODETIC SURVEY D 0 ü ü D D U D..... YUMA PROVING GROUND UTII-HIIETICIEFLECTIMS 27 Ml Pllt»EITICÄl CMPNENT \m\ P»C = (X,-X,) COS 0, COHTOUI INTMVÄI O.S MC SICOND ^ unu un NomoNTt CONTIOI stno /\ MMIMIU (MTIOI UTION TMU coaon u mum ma tn OlllVII «t TNI UPUCI SKTIONS A-7

- UNITED STATES LOCALITY YUMA COUNTY. ARIZONA LATITUOI N 32 55' 37,., 9A42 (NONTHINOMSAM4NS4 3 646 245.384 IM) (NOWTMING)l»ATIMGI fm 6f mm DISC STAMPING ON MARKpQf JJQ < ARMY MAP SERVICE 960 LONGITUDE W HA* 8' 23V8977 (EASTtNOIWTMIMBI 75 852.783 IM) IE ASTING) M>WTMIN6) IT TTTW CARD OF 2 PGT NO. 2 AMS 960 AGENCY (CAST IN MARKS) CORPS OF ENGINEERS DATUM 927 NAD* GRID AND ZONK UTM GRID AND ZONE 265.97 DATUM 929 MSL IM) ESTABLISHED BY (AGENCY) DMATC 38 002.874 IM) 32 677.700 IM) YPG** SECQHP TO OBTAIN UTM (ZONE llj GRID AZIMUTH, ADO 78 32 06.68TOTHE GEODETIC AZIMUTH DATE jm. ORDER TO OBTAIN GRID AZ. laddiisub.) TO THE GEODETIC AZIMUTH AZIMUTH BR BIWBBTIBW FROM SOUTH CEOD. DISTANCE GRID DISTANCE OBJECT loeodetiowmw BACK AZIMUTH (METERS) (METERS) IFEETI IMACNBTI6I HILLTOP USC&GS 949 82 03' 46.'58 02" 04' 0.'44 9649.465 PGT NO. 2 RM 05 7 36. 9.85 SITE 5 969 YPG 05 56.57 85 56.48 44.896 002 243 45 24.27 63 45 27.2 5.787 PGT NO. 2 RM 2 249 47 05. 9.98 *Elllp8odal postons as carred nto area through the Transcontnental Traverse. **Northng = Arzona West Zone -576 86.5768/3.2308 33333 Eastng - Arzona West Zone -22 988.7058/3.2808 33333 The staton s located at the U.S. Army Yuma Provng Ground. It s about 0.5 mle east of U.S. Hghway 95 and about 6.8 mles northeast of post headquarters. Permsson to vst the staton must be obtaned through Headquarters, Yuma Provng Ground. To reach the staton from the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the provng ground go north on U.S. Hghway 95 for 3. mles to the juncton wth a road to the rght leadng nto the Kofa Range Area; turn rght and go east for 0.8 mle to a guard post, contnue for 0.5 mle to a crossroad; turn left and go northerly for 4.5 mles to a gravel road left at a curve n the road just northeast of a low saddle; turn left onto the gravel road and go northerly, upgrade for 0.3 mle to a saddle and a crossroad; turn left and go southwest up a steep grade for 0. mle to a parkng area, an astro dome, and the end of truck travel; from here walk north, up a path to the hghest pont of the hll and the staton. Staton Mark: A Corps of Engneers, U.S. Army dsc stamped: "PGT NO. 2 ARMY MAP SERVICE 960" cemented n a drll hole n a boulder. A concrete pad, 3 feet x 3 feet, has been placed around the dsc. Reference Mark No. : A Corps of Engneers, U.S. Army dsc stamped: "PGT NO. 2 RM ARMY MAP SERVICE 960" cemented n a drll hole n a boulder. It s located at a horzontal dstance of 9.85 meters (65.0 ft.) south-southeast of the staton and 3.4 meters lower n elevaton. f N I I SKETCH DA "«.959 "^"o".v.; hn REPLACES O* FORMS! ( S7. WHICH DESCRIPTION OR RECOVERY OF HORIZONTAL CONTROL STATION t OCT «I 9«/9 A E obsoltt«" For u«of hl» form, too TM 9-237; tho propononl A- 8 "*>' '' U.S.Cofllnolol Army Commond.

UNITED STATES mt AP wm DISC Card 2 of 2 POT NO. 2 AMS 960 LOCALITY ITAM^INO ON MARK AOINCV (CAST IN MARKS) ELEVATION YUMA COUNTY, ARIZONA LATITUDE LONGITUDE DATUM DATUM (FT) (M) (NORTHINOKCASTINO) (NORTHINGKEASTINO) (FTI (Ml (FTI (Ml (EASTINOHNORTMINOI (EASTINOXNORTHINGI (FT) (M) IFT (Ml ORID AHO ZONE ESTABLISHED BY (AGENCVI ORID AND ZONE DATE ORDER TO OBTAIN ORID AZIMUTH. ADD TO THE GEODETIC AZIMUTH TO OBTAIN GRID AZ. (ADO)ISUB.) TO THE GEODETIC AZIMUTH AZIMUTH OR DIRECTION GEOD. DISTANCE GRID DISTANCE OBJECT (GEODETICKORID) BACK AZIMUTH (METERS) (FEET) IMETERSI (FEET) (MACNETICI Reference Mark No. 2: A Corps of Engneers, U.S. Army dsc stamped: "POT NO. 2 RM 2 ARMY MAP SERVICE 960" cemented In a drll hole n a rock outcrop. It s located at a horzontal dstance of 9.98 meters (32.54 feet) northeast of the staton and 2.4 meters lower n elevaton. DA OCT «*7 W*# REPLACES DA FOHMt»S«AND teo, Fee 7, WHICH ARE OBSOLETE. ^KETCH DESCRIPTION OR RECOVERY OP HORIZONTAL CONTROL STATION Fof us* of *! lorm, sa* TM 5-J37; th* propensnt ft n "^«r I» U.S.Coolln.n. Armr Comnond. N I

»UHflV TVPC OF MARK CARD OF 2 UNITED STATES DISC PGT NO. 3 AMS 960 ttampinc ON MARKpQ<f jjo. 3 AOCNCV (CAST IN HARKS) LOCALITY YUMA COUNTY. ARIZONA LATITUOC N 33 4* 2?«720 (NORTHING)«3 680 985.05 IM) (NORTHINGKACTIMB) ARMY MAP SERVICE 960 LONGITUDE W 4 5* (CASTING) ZS'.'SSl? 755 580.544 (M) (EASTING)INBRTNINBI CORPS OF ENGINEERS DATUM 927 NAD* GRID AND IONC UTM GRID AND ZONE 549.6QQ DATUM 929 MSL IM) ESTABLISHED BY (AOCNCV) DMATC 72 595.596 (M) 37 477.558 (M) YPG**.975. TO OBTAIN UTM (ZONE llj ORID AIIMUTH, ADD 78 29 44 52''0 THC GCOOCTIC AHMUTH DATC OR OCR M. TO OBTAIN GRID AZ. (ADDHSUB.) TO THC GCODCTIC AZIMUTH OBJECT AZIMUTH BR BIRBGTIBM IGCODCTIOWIMW FROM SOUTH BACK AZIMUTH GEOO. DISTANCE (MCTCRS) SITE 2 25 23' 5:60 205 7' 47:49 364.496 PGT NO. 2 07 37 2.98 87 35 44.64 349», W? HILLTOP 4 39 02.77 94 37 40.3 5483.85 PGT NO. 3 RM 23 0 22. 5.29 PGT NO. 3 RM 2 280 9 6. 8.388 GRID DISTANCE (METERS) (FEET) ^Ellpsodal postons as carred nto area through the Transcontnental Traverse. **Northlng = Arzona West Zone -576 86.5768/3.28C r 33333 Eastng - Arzona West Zone -22 988.7058/3.2808 33333. PGT NO. 3, AMS 960 s a staton on a precse geodlmeter traverse and was establshed by an Army Map Servce feld survey party. The staton mark s a U.S. Army Corps of Engneers dsk cemented n a drlled hole n a large rock about 3 feet n dameter and projectng about foot above the ground. It s stamped "PGT NO. 3 ARMY MAP SERVICE 960". Staton mark s located on a hll near a radar nstallaton whch s also on that hll The staton mark Is 54 feet west of the southwest comer of a fence; 20 feet south of the centerlne of a road; 30 mles south of Quartz ste and 29 mles north of the Yuma Test Center. To reach from the ntersecton of U.S. Routes 60 and 70 and State Route 95 at Quartz ste, go south on State Route 95 for 29.3 mles to ntersecton wth a road to the west (ths road Is between mle posts 74 and 75); turn rght and go west up a wndng road for 0.6 mle to a radar Installaton at top of the hll and ste of the staton. The staton mark can also be reached from the ntersecton of State Route 9J and the man entrance road toward the ^ Yuma Test Staton by gong north-northeast on Route 95 for 30.8 mles to ntersecton wth road as mentoned n above descrpton. Reference Mark No. ; A U.S. Army Corps of Engneers dsk cemented n a drlled hole n a rock 5.29 meters south of the staton mark and about 2 feet lower n elevaton. It s stamped "PGT NO. 3 RM NO. ARMY MAP SERVICE 960". I SKETCH REPLACES DA or?.4 9027 * NO ' 0 O* ' FEB FORM! I»»» l^rt»oet»«l«^w«* ARC OBSOLETE.». WHICH DESCRIPTION OR RECOVERY OP HORIZONTAL CONTROL STATION For ut» af Id I. lotm, «TM 5-237;»h. praponan«a?n ' 9 "" V " U, c ",l,w,, l *" ' CwMM.

u :-J'.-. novprv UNITED STATES LOCALITY YUMA COUNTY, ARIZONA fvw P DISC STAMPING ON MARK CARD 2 OF 2 STATION PGT NO. 3 AMS I960 AOCNCV (CAIT IN MARK» ELEVATION RT LATITUDE LONOITUOE DATUM DATUM (FT) IM) (NORTHINGXEAtTINOI INORTNINOMEASTINOI (FT (M) IFTI (Ml ICASTINCXNONTHINOI (EASTINOMNORTHINOI rr) GRID AND ZONE ESTABLISHED BY IACENCV) IM) rti GRID AND ZONE DATE ORDER (M) TO OBTAIN GRID AZIMUTH, ADO TO THE GEODETIC AZIMUTH TO OBTAIN GRID AZ. IADDIISUB.I TO THE GEODETIC AZIMUTH AZIMUTH OR DIRECTION GEOO. DISTANCE GRID DISTANCE OBJECT (OEODETICIIGRID) BACK AZIMUTH (METERS) (FEET) (METERS) (FEET) IMACNETIC) Reference Mark No. 2; A U.S. Army Corps of Engneers dsk cemented n a drlled hole n a rock 8.388 meters east of the staton mark and about 3 feet lower n elevaton. It s stamped "PGT NO. 3 RM NO. 2 ARMY MAP SERVICE 960". Azmuth Mark: A U.S. Army Corps of Engneers dsk cemented In a drlled hole n an outcroppng rock about 0. mle west-northwest of the staton mark. It s stamped "RADAR 957". To reach from the staton mark go west-northwest for about 0. mle to the hghest pont of a rounded hll and ste of staton. Reported not found (Radar, 957) n Sep. 965 by AMS. DA I OCT «4 959 NCPLACEI D» FONMt Kt AND»e0. FIB 87. WHICH ARK OBIOLCTI. SKETCH DESCRIPTION OR RECOVERY OF HORIZONTAL CONTROL STATION Per ma! Hll farm, TM 5.237; fh* proponent A-2 ' "»- " * '' " -' * r f lamj. N I

UüUflV UNITED STATES DTSC HILLTOP. USC&GS 949. tt m C 97& LOCALITY YUMA COUNTY. ARIZONA LATITUDE N 33 06' 5,., 3769 (NOWTMINCXKAtTIMB) 3 665 90.32 IM) (NOWTHING)HAITIIIOI ST AWING ON MARK HILLTOP 949 LONOITUDE W 4 7' 56V685 IEATINO M«WTNIM«752 056.785 (MI (EASTIN0)IN9WTNINC AOCNCV (CAST IN MARKS) USC&GS DATUM 927 NAD* GRID AND ZONE UTM GRID AND ZONE ELEVATION 34.97 IM) DATUM 929 MSL ESTABLISHED BY (AGENCY) u DMATC DATE ORDER 57 634.92 (M) 33 488.937 (Ml YPG** 974 SECOND TO OBTAIN UTM (ZONE ) GRID AZIMUTH, ADD 78 3 26.63TOTHE GEODETIC AZIMUTH TO OBTAIN GRID AZ. (ADDMSUB.) TO THE GEODETIC AZIMUTH OBJECT AZIMUTH BR BIRBGTIBN (CEOOfTICI FROM SOUTH BACK AZIMUTH CEOD. DISTANCE IMETERSI POT NO. 3 94 37 40:3 4 39' C2;77 5483-85 PGT NO. 2.02 04 0.44 A&2 03 46.58 9649.465 HILLTOP RM 2 35 03 26. -645 HILLTOP RM 239 38 5. 7.90 GRID DISTANCE (METERS) (FEET) Ellpsodal postons as carred nto area through the Transcontnental Traverse. **Northng - Arzona West Zone -576 86.5768/3.2808 33333 Eastng - Arzona West Zone -22 98S. 7058/3.2808 33333 The staton s located at the U.S. Army Yuna Provng Ground. It s about 0.5 mle west of U.S. Hghway 95 and 9.0 mles north-northeast of post headquarters. To re.'ch the staton from the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the provng ground go north on U.S. Hghway 95 for 20.4 mles to a road left; turn left and go west and north for 0.5 mle to a crossroad; turn left and go west for 0.2 mle to a track road left; turn left and go upgrade to the top of a small hll and the staton ste. The staton s located at the west end of a cleareu area. Staton Mark: A USC&GS dsc stamped: large flat boulder. "HILLTOP 949" cemented n a drll hole n a Reference Mark No. ; A USC&GS dsc stamped: "HILLTOP NO. drll hole n a boulder. It s located 7.90 meters (25.95 feet) north-northeast of the staton. 949" cemented n a Reference Mark No. 2: A USC&GS dsc stamped: "HILLTOP NO. 2 949" cemented n a drll hole n a boulder. It s located.645 meters (38.2 feet) north-northwest of the staton. l^n I OCT t«^»#%* ARC OBSOLETE. ORMS It!«a>. WHICH L KETCH DESCRIPTION OR RECOVERY OP HORIZONTAL CONTROL STATION Per us* of ths (arm, TM 5-237; «h* prepenant A-22 "» '* U.S.C*Mlwt«l Army Command.

.. Tx~r- abbbm U U u u u u.. J TVPC OF MARK Bac ^Ä UNITED STATES BENCH MARK USC&GS 934 TC 97A LOCALITY STAMPING ON MARK AOCNCV (CAST IN MARKS) LEVATION YUMA COUNTY. ARIZONA LATITUDE N 32 48' 39V5334 (MORTMINO)f ASTIMCI BENCH MARK 934 LONGITUDE W 4 22' 35,., 6009 leastinoiimartmimbi USC&GS DATUM 927 NAD* GRID AND ZONK 89.040 (M) DATUM 9;/> MSL ESTABLISHED BY (AGENCY) 3 633 90.666 IM) 745 633.507 IM) UTM DMATC (NORTMING)HATIM»l (EASTINOINBRTIIIMG) GRID AND ZONE DATE ORDER 25 50.895 (Ml 26 06.970 (M) YPG** 974 SECOND TO OBTAIN UTM (ZONE ) GRID AZIMUTH, ADO 78 * 34^ 39^8 THE GEODETIC AZIMUTH TO OBTAIN GRID AZ. (AOO)ISUB.) TO THE GEODETIC AZIMUTH FROM SOUTH CEOD. DISTANCE GRID DISTANCE OBJECT BACK AZIMUTH (METERS) (METERS) (FEET) AZIMUTH «R BIRR6TIBN (GEODrTICII«IWm tmacnktici 206 53' 5:79 05 55 03. PGT NO. 2 BENCH MARK RM 2 26 56' 08:40 4455.28 30.430 BENCH MARK RM 27 37 2. 20.4 SITE 47 38 56.96 327 37 33.99 7433.874 *Ellpsoldal postons as carred Into area through the Transcontnental Traverse. **Northng = Arzona West Zone -576 86.5768/3.280«33333 Eastng = Arzona West Zone -22 988.7058/3.2808 33333 The staton s located at the U.S. Army Yuma Provng Ground. It s about 0.5 mle east of U.S. Hghway 95 and about 2.5 mles southeast of post headquarters. To reach the staton from the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the provng ground go east for 0.3 mle to the Intersecton wth the power lne road; turn rght and go south for 0.7 mle to the staton ste. The staton s located about 0 mectrs east of the power lne. L Staton Mark: A USC&GS dsc stamped: "BENCH MARK 934" set n the top of a concrete monument projectng 0.5 foot above the surface. Reference Mark No. : A USC&GS dsc stamped: BENCH MARK NO. 934" set n the top of a concrete monument projectng 0.3 foot above the surface. It s located about 2 meters west-northwest of the staton. Reference Mark No. 2: A USC&GS dsc stamped: "BENCH MARK NO. 2 934" set n the top of a concrete monument projectng 0.3 foot above the surface. It s located about 3 meters south of the staton. f N DA ' MM 959 "^o" 0^; REPLACES DA FORMS ItSS B ST, WHICH I SKETCH DESCRIPTION OR RECOVERY OF HORIZONTAL CONTROL STATION For us«of Itls tatm, TM 5.2J7; h* proponent ^_23 ' 9 "" r '* u - $ - C ««""«"»«l *"» Common^,

UNITED STATES LOCALITY YUMA COUNTY. ARIZONA LATITUDE DISC STAMPING ON NARKjflps 974 TOPO. CENTER LONGITUDE ^5 STATION MPS 25. DMATC 974 AGENCY (CAST IN MARKS) DMA 70.056 (Ml DATUM DATUM N 32 54' 03,., 6645 W 4 22' 54,. l 4232 927 NAD* 929 MSL (NONTHINC)«(EASTINGIINOWTMINGI GRID AND ZONE ESTABLISHED BY (AGENCY) 3 643 63.743 IM) 744 896.05 IM) UTM DMATC INOWTMINOIBASTINBI 4^,4 (CASTINg)INOBTMIMCI rt GRID AND ZONE DATE ORDER 35 38.292 rw 25 632.063 IMI YPG** 974 SECOND TO OBTAIN UTM (ZONE IT' GRID AZIMUTH, ADD 78 34 37.58ro THE GEODETIC AZIMUTH mwm TO OBTAIN GRID AZ. laodksub.) TO THE GEODETIC AZIMUTH AZIMUTH BW BIRBCTIBH OBJECT ICEOOFTIC)t««W«t IMABNCTICI PGT NO. 2 247" 3' 52.'48 M 34 9.48 76Q5.928 MPS 25 RM 4 32 52. 36.246 MPS 25 RM 2.2 9 35. 3Q.02 GEOD. DISTANCE (METERS) CAMERA SITE 4 M 57 6.98 276 57 09.04 laum SITE 3 226 7 49.70.46 9.84 543.332 GRID DISTANCE (METERS) (FEET) *Ellpsodal postcns as carred nto area through the Transcontnental Traverse, *'-Northlng = Arzona West Zone -576 86.5768/3.2808 33333 Eastng = Arzona West Zone -22 988.7058/3.2808 33333 The staton s located at the U.S. Army Yuma Provng Ground. It s about 3.0 mles west of U.S. Hghwjy 95 and about 4.0 mles north of post headquarters. To reach the staton from the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the provng ground go north on U.S. Hghway 95 for 2.7 mles to the juncton wth Martnez Lake Road to the left; turn left and go west for 2.4 mles to a road fork, north, for 2. mles to the tumoff to Cbola Range Control; tum rght contnung northerly for 0.7 mle to a gravel road rght (Cbola Range Control s on the west sde of the road); turn rght and go east for 0.8 mle to a road fork; take the rght fork and go east for 0.9 mle to the end of the road and the staton ste at the north sde of a cleared area. Staton Mark: A Defense Mappng Agency dsc stamped: n the top of a round concrete post, 2 Inches n dameter and projectng 0.4 foot above ground. "MPS 25 974 TOPO CENTER" set Reference Mark No. : A Defense Mappng Agency dsc stamped: "MPS 25 RM NO 974 TOPO CENTER", set n a concrete block, 2 feet square and flush wth the ground. It s located 36.246 meters (8.92 feet) south of the staton. Reference Mnrk No. 2: A YPG Geodetc Control dsc stamped: "MPS 25 97" set n a concrete post, 5 nches square and flush wth the ground. It s located 30.02 meters (98.49 feet) southwest of the staton. DA.o r REPLACES DA FORM!! 9»0. FEB 97, WHICH??V959:s OBSOLETE. I SKETCH DESCRIPTION OR RECOVERY OF HORIZONTAL CONTROL STATION For us«of Ihs lerm, TM 5-237; th* proponsnl. ^. "» ' U.S.Coall.»,.!«! Army Cwnmand. A-24 N

u D D 0 U Ü Ü Ü D 0 D :: COUNTRY UNITED STATES LOCALITY YUMA COUNTY. ARIZONA LATITUDC N 32 52' 03'.'376 (NORTHINOItl 3 639 372.0 (Ml (NORTHINCM 3 ULm m mt P ma DISL (TAMPING ON MARK SITE 974 TOPO CENTER LONOITUDC W 4 25' 08'.'6052 (CASTINOXWTMIMCI 74 499.489 «4 (Ml (EA»TINCHN»RTMIN<I lft) 22 2.485 < «> tmm»» SITE r DMATC 974 AOCNCY (C ttf IN MARK!) PMft DATUM 927 NAD* GRID AND ICNt UTM GRID AND ZONE ELEVATION 83.798 IM) DATUM 929 MSL ESTABLISHED BY (AGENCY) DMATC DATE 974 O«0ER SECOND YPG** TO OBTAIN UTM (ZONE ) GRID AZIMUTH. ADD lyst 35 SS'/l^O THE GEODETIC AI>MUTM TO OBTAIN GRID AZ. (ADOXSUB.) TO THE GEODETIC AZIMUTH OBJECT AZIMUTH BW BIRBCTIOM FROM SOUTH GEOD. DISTANCE GRID DISTANCE (GEODETIC)' BACK AZIMUTH (METERS) (METERS) (FEET) mumm PGT NO. 2 237" 49' 22:98 57* 53' 02:79 2422.792 SITE 2 76 47 37.96 356 47 28.22 8333.306 MPS 25 223 5 2.04 43 6 33.89 5088.926 BENCH MARK 327 37 33.99 47 38 56.96 7433.874 *Ellpsodal postons as carred nto area through the Transcontnental Traverse. **Northng = Arzona West Zone -576 86.5768/3.2808 33333 Eastng» Arzona West Zone -22 988.7058/3.2808 33333 The staton s located at the U.S. Army Yuma Provng Ground. It s about 3.5 mles west of U.S. Hghway 95 and about 2 mles northwest of post headquarters. To reach the staton from the Intersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the provng ground, go west on Laguna Road for.45 mles to a sde road rght (Crotllo Road); turn rght and go north for.5 mles to a fork; take the left fork, north and west, for.5 mles to a "Y" ntersecton; turn left and go 0.3 mle to a gravel road rght; turn rght and go northerly for.2 mles upgrade to a swtchback to the left; turn left and contnue up a steep grade for 0. mle to the top of the hll, an old camera astro dome ste and the staton. The staton Is located n the north comer of a concrete pad whch projects.4 feet above ground. Staton Mark: A Defense Mappng Agency dsc stamped: "SITE 974 TOPOCENTER", and cemented n a drll hole. SITE..: N DA FORM OCT «4 959 REPLACES D* FORMt ItS» AND l*co, FEB ST WHI'.'H ARC OBSOLETE. I SKETCH DESCRIPTION OR RECOVERY rf HORIZONTAL CONTROL STATION Far u* of ths arm, IM TM $.237; th* pfopentnt /\ 25 "» ' U.S.C«nll«Bl Armr Command.

:» ;'"!- --. m TYPC OF MARK UIITED STATES DISC SITE 2, MIATC 974 LOCALITY STAMPING ON MARK SITE 2 AOCNCV (CAST IN MARKS) YUMA COUNTY. ARIZONA LATITUDE N 32 56' 33'.'4625 (NORTHING)«3 647 68.006 (M) (MORTNINOMBAITIMa 39 777.86 (Ml 974 TOPO CENTER LONGITUDE W 4 25' 26,., 5470 (EASTING). 740 829.665 IM) (EASTINOHWRTIMNBI 2 708.28 (Ml DMA DATUM 927 NAD* GRID AND ZONE UTM GRID AND ZONE YPG** 52.732 DATUM IM) 929 MSL ESTABLISHED BY (AGENCY) DMATC DATE 974 ORDER SECOND TO OBTAIN UTM (ZONE l; ORID AZIMUTH. ADD 76 35 54. 68TO THE GEODETIC AZIMUTH TO OBTAIN ORID AZ. (AODMSUB.I TO THE GEODETIC AZIMUTH AZIMUTH BR BIRBBTIBM FROM SOUTH GEOD. DISTANCE GRID DISTANCE OBJECT IOEODETICX BACK AZIMUTH (METERS) (METERS) (FEETI MA6MBTIBI PGT NO. 3 205 7' 47.'49 25 23 5:60 364.496 SITE 2 DISC 60 35 39.72 340 34 29.32 0099.766 SITE 7 DISC m 49 7.72 28 5 0.35 0248.367 IR 24 42 7 2.29 69 9 23.79 672.325 PGT NO. 2 IIS 49 7.46 98 53 07.25 2.339 Ellpsodal postons as carred nto area through the Transcontnental Traverse, **Northng Arzona West Zone -576 86.5768/3.2808 33333 Eastng Arzona West: Zone -22 988.7058/3.2808 33333 The staton s located at. the U.S. Army Yuma Provng Ground. It s about 6.5 mles west of U.S. Hghway 95 and about 7 mles north of post headquarters. To reach the staton from the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the provng ground go north on U.S. Hghway 95 for 2.7 mles to the Juncton wth Martnez Lake Road to the left; turn left and go west for 2.4 mles to a road fork; take the rght fork north, and go for 4.6 mles to a gravel road left; turn left and go for 0.5 mle to a GL0 mark on the left; bear to the rght, upgrade, and go easterly for 0.2 mle to the top of the hll and the ste of an astro dome and the staton. The staton s located on the southeast corner of the concrete astro dome pad. Staton Mark: A Defense Mappng Agency dsc stamped: cemented n a drll hole. "SITE 2 974 T0P0 CENTER", SITL Z DA, 0^959: «EPLACES DA FORMS It» HO IM0. FED S7. WHICH PIC OBSOLETE. I SKETCH DESCRIPTION OR RECOVERY OF HORIZONTAL CONTROL STATION For u* ol *l» form, TM $-237; lh«proponent A?f ' 9 ' ntr '* U $ C ",lb,,, A "*r Common. N

ÜP^WÄS» UNITED STATES DISC SITE 3. DMATC 974 LOCALITY YUMA COUNTY. ARIZONA LATITUDE N 32 56' 0SV455S (NOWTHINOmtTINCI 3 647 04.09 IM) (NORTHING) STAMPING ON MARK^^fg 3 974 TOPO CENTER LONOITUOE W 4 20' 23V285 ItASTINGHHOWTMINCI ( m 748 729.498 <* ) (EASTINGKNORTMINC) )rt AOCNCV (CAST IN MARKS) DMA DATUM 927 NAD* CRID AND ZONE UTM GRID AND ZONE TTfyTfTStT 239.709 DATUM 929 MSL (Ml ESTABLISHED SV (AOENCV) DMATC 38 867.204 (M) 29 580.862 *«t YPG** 974 SECOND TO OBTAIN UTM (ZONE ) GRID AZIMUTH. ADD 78 33 0.6TO THE GEODETIC AZIMUTH SITE 2 96'' 6' 2:78 276* 3' 36.'88 7925.248 MPS 25 46 9.84 226 7 49.70 543.332 SITE 6 DISC 54 53 4.9 334 52 48.86 293.64 PGT NO. 2 285 6 25.73 05 7 30.63 325.294 DATE ORDER TO OBTAIN GRID AZ. (AODKSUB.) TO THE GEODETIC AZIMUTH AZIMUTH BW BIRBBTIBM FROM SOUTH CEOO. DISTANCE CRID DISTANCE OBJECT (GEODETIC) BACK AZIMUTH (METERS) (METERS) (FEET) *Ellpsoldal postons as carred nto area through the Transcontnental Traverse, **Northng = Arzona West Zone -576 86.5768/3.2808 33333 Eastng = Arzona West Zone -22 988.7058/3.2808 33333 The staton s located at the U.S. Army Yuma Provng Ground. It s about.5 mles west of U.S. Hghway 95 and about 7.5 mles northeast of post headquarters. To reach the staton from the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the provng ground go north on U.S. Hghway 95 for 7.4 mles to the juncton wth Mddle Mtn. Road to the left; turn left and go west and north for.6 mles to a road left; turn left and go southwest, upgrade, for 0.4 mles to the top of the hll and the staton ste on the north sde of an old astro dome concrete pad. The staton s located 28.28 feet north of the center (cuptack n lead) of the concrete astro dome pad. Staton Mark: A Defense Mapp-ng Agency dsc stamped: "SITE 3 974 TOPO CENTER", set n the top of a foot square concrete post set flush wth the ground. ^""^ SITE. I SKETCH DA t :rj959srs """«" Vr; 0," M ;.mch OESCRIPTIOM OR RECOVERY OF HORIZONTAL CONTROL STATION A-27 '*"'** *' U ' $ - Co '»,lb»n««l Army Command. POlt f N I

**jr:r:'\t* '* >< MWP UNITED STATES DISC CAMERA SITE A. DMATC, LOCALITY YUMA COUNTY, ARIZONA LATITUOC N 32 54' 05'.'689 INOWTMINOHlAMINtl 3 643 200.658 (Ml (NORTHING) (R») 35 86.98 (Ml ITAMPINO ON MARK CAMERA SITE 4 974 TOPO CENTEfc DMA LONGITUOC DATUM AOCNCV ICAIT IN MARKS) W 4 23' 09,.'0447 927 NAD* (EASTING)HeWf «) (««) GRID AND ZONE 744 54.949 IMI UTM (EASTIMGXNORYIMNO (#V GRID AND ZONE 25 252.363 m YPG** r^r ^.KVATION 7.598 IM) DATUM 929 MSL CSTABLISHCD BY (AGENCY! DMATC DATE 974 ORDER Second TO OBTAIN UTM (ZONE ID ORID AZIMUTH, ADO 78* 34^ 45.47ro THE GEODETIC AZIMUTH TO OBTAIN GRID AZ. laddiiiub.) TO THE GEODETIC AZIMUTH FROM SOUTH OBJECT BACK AZIMUTH MPS 25 AZIMUTH BR BIHBBTIBM loeodetichoiwot MA6NBTI6I 276, 57' 09.'04 96 e 57' 6:98 GEOD. DISTANCE (METERS) 382.80 GRID DISTANCÜ (METERS) (FF.ET) Ellpsodal postons as carred nto area through the Transcontnental Traverse, **Northng - Arzona West Zone -576 86.5768/3.2808 33333 Eastng = Arzona West Zone -22 988.7058/3.2808 33333 The staton s located at the U.S. Army Yuma Provng Ground. It s about 3.0 mles west of U.S. Hghway 95 and about 4.0 mles north of post headquarters. To reach the staton from the ntersecton of road (Laguna Road) to the provng ground go no to the juncton wth Martnez Lake Road to the 2.4 mles to a road fork; take the rght fork, to Clbola Range Control; turn rght contnung road rght (Cbola Range Control s on the wes go east for 0.8 mle to a road fork; take the to the staton ste on the left. The staton concrete pad whch measuresls feet by 22 feet. U.S. Hghway 95 and the man entrance rth on U.S. Hghway 95 and 2.7 mles left; turn left and go west for north, for 2. mles to the tumoff northerly for 0.7 mle to a gravel t sde of the road); turn rght and rght fork and go east for 0.65 mle s located on the north corner of a Staton Mark: A Defense Mappng Agency dsc stamped; CENTER" set n a drll hole. "CAMERA SITE 4 974 TOPO DA.: t9s9 "S Mo,D r.«st wnrcl. I [SKETOM»"CRIPTIOM OR RECOVERY OF HORIZONTAL CONTROL STATION A-28 * ",e,, U -, - C»"» ln «"»» A'"* Cammmrt. N

-JL- WWW UNITED STATES DISC SITE 5 969 YPG. LOCALITY YUMA COUNTY, ARIZONA LATITUDE N 32 55' 36".U9U6 lnowtrtlnc)(«a«tino) 3 646 200.608 (Ml (NORTHING) 37 958.246 (M) TO OBTAIN UTM (ZONE ) STAMPING ON MARK ACCNCV (CAST IN MARKS) SITE 5 969 YPG GEODETIC CONTROL LONGITUDE DATUM W 4 8' 24,., 0764 927 NAD* CA!.TINGt(M»nTMINC) t*») GRID AND ZONE 75 849.283 m IUTM (EASTINCMNBnTMIN«) 32 672.620 (R#l GRID AND ZONE (M) far** POT NO. 2 85 36' :48 Of 56'.'57 44.896 002 23 33 0.99 5 33 3.93 79.759 WM QTJt OVATION 259.326 (M) DATUM 929 MSL ESTABLISHED BY (AGENCY) DMATC DATE 974 ORDER Second GRIU AZIMUTH, ADD 32 06.84TO THE GEODETIC AZIMUTH TO OBTAIN GRID AZ. (ADOKSUb.) TO THE GEODETIC AZIMUTH AZIMUTH GEOD. DISTANCE GRID DISTANCE OBJECT (GEOOETIC)(«MW BACK AZIMUTH (METERS) (METERS) (FEET) Ellpsodal postons as carred nto area through the Transcontnental Traverse. **Northng - Arzona West Zone -576 86.5768/3.2808 33333 Eastng Arzona West Zone -22 988.7058/3.2808 33333 The staton s located at the U.S. Army Yuma Provng Ground. It s about 0.5 mle east of U.S. Hghway 95 and about 6.8 mles northeast of post headquarters. To reach the staton from the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the provng ground go north on U.S. Hghway 95 for 3.3 mles to the juncton wth Aberdeen Road to the rght; turn rght and go east for. mles to a crossroad; turn left and go north on W. 3rd Avenue for 4.6 mles to a sharp curve and gravel road left; turn left and go west and north, upgrade, for 0.4 mle to a road fork; take the left fork and go southwest for 0.5 mle to an astro dome and the staton s*-e. The staton s located on the southeast corner of the concrete astro dome pad. Staton Mark: drll hole. A YPG Geodetc Control dsc stamped: "SITE 5 969" cemented n a -/v*- A5TRO C6NC0ETE DOME PAD DA FORM I OCT «959 REPLACES DA FORM» Itlt AND»60. FEB ST, WHICH ARE OBSOLETE. SKETCH_ SITE 5 -A.0«) rl f N DESCRIPTION OR RECOVERY OP HORIZONTAL CONTROL STATION For ut* of *ls form, TM $.237; (ha prayomnl A-29 a Be^, ' U.S.C»lnol Army Commont.

UNITED STATES DISC SITE 6 DTSC YPr., JQM AM Ig" LOCALITY STAMPING ON MARK AOCNCV (CAST IN MARKST YUMA COUNTY, ARIZONA SITE 6 DISC YPG GEODETIC CONTROL LATITUDE N 32 57' 3,., 6094 INORTHINCKBAMIM«) 3 649 636.859 (NORTMINC)l«A»?IMB) 4 528.50 I**I (Ml (*» (M) LONGITUDE W 4 2' (EASTINGKWRTIIIMOI IIVITS? 747 48.40 M (EASTING)INBRTIlMB) 28 35.797 (Ml DATUM 927 NAD* GRID AND ZONE UTM GRID AND ZONE YPG** XEVATION 20.434 IM) DATUM 929 MSL ESTABLISHED BY (AGENCY) DMATC DATE 974 ORDER Second TO OBTAIN UTM (ZONE ) GRID AZIMUTH. ADD 78* 3j 3335 THE GEODETIC AZIMUTH TO OBTAIN GRID AZ. (ADOKSUB.I TO THE GEODETIC AZIMUTH AZIMUTH BR BIRBBf IBM FROM SOUTH OBJECT (GEODETICIIBRIBI BACK AZIMUTH CEOO. DISTANCE (METERS) MPS 25 22'' 43' 42:03 202 42 45:9 6944.762 SITE 2 74 54 25.3 254 52 06.23 6870.602 SITE 2 DISC 27 47 05.08 307 43 SILM 263.447 SITE 6 MON. YPG 35 47 22. 2.805 IR 24 48 40 20.63 328 40 3.22 679.983 SITE 3 334 52 48.86 54 53 4.9 293.64 GRID DISTANCE IMETERSI (FEET).! Ellpsodal postons as carred nto area through the Transcontnental Traverse. **Northng Arzona West Zone -576 86.5768/3.2808 33333 Eastng = Arzona West Zone -22 988.7058/3.2808 33333 The staton s located at the U.S. Army Yuma Provng Ground. It s about 3.5 mles west of U.S. Hghway 95 and about 8.5 mles northeast of post headquarters. To reach the staton from the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the provng ground, go north on U.S. Hghway 95 for 7.4 mles to the juncton wth Mddle Mtn. Road to the left; turn left and go west and north for 3.75 mles to a road rght; turn rght and go east for 0.3 mle, upslope, to an astro dome and the staton ste. The staton s located n the southwest corner of the concrete astro dome pad.. I Staton Mark: drll hole. A YPG Geodetc Control dsc stamped: "SITE 6 DISC", cemented n a /tst DA,:?? M J959 : REPLACES " L "" D D* FORM) l»8» B S7, WHICH - [SKETCH A*-«-SITC & DESCRIPTION OR RECOVERY OF HORIZONTAL CONTROL STATION For u* e) Al. (otm, TM S-237;»h* prepen«nt A?n ' t "' Cr '* U $ C ', " n n, " l *""' CommoMl. N I

UNITED STATES LOCALITY YUMA COUNTY. ARIZONA LATITUOC N 33 0' 24'.'8889 (NOWTWINOIIIAMIM«) 3 656 78.32 (M) (NORTHING) TTFrsnmrr DISC SITE 7 DISC YPG. P! ms 74 STAMPING ON MARK SITE 7 DISC LONGITUDE W 4 22' 6,., 80 (EASTIWGKNOWTMINO) 745 550.46 (M (EASTING)(M»RTIIIM«) AGENCV (CAST IN MARKS) YPG GEODETIC CONTROL DATUM 927 NAD* CRID AND ZONE UTM GRID AND ZONE rlevation 85.97 IM) DATUM 929 MSL ESTABLISHED BY (AGENCY) DMATC DATE ORDER 48 72A.020 (M) 26 706.084 IM) YPG** 974 SECOND TO OBTAIN UTM (ZONE ) ORID AZIMUTH. ADD 78 * 33' 59.'79TO THE GEODETIC AZIMUTH TO OBTAIN GRID AZ. laddksub.i TO THE GEODETIC AZIMUTH AZIMUTH OR OIRBBTIBM FROM SOUTH GEOO. DISTANCE OBJECT (GEODETIC)«BACK AZIMUTH GRID DISTANCE (METERS) t (MABNBTIBI (METERS) (FEET) SITE 9 DISC 89' 39 37'.08 09 40' 8:02 590.007 IRCC 73 23 04.09 253 22 5.35 2 422.89 SITE 8 DISC 93 25 50.6 3 26 2.8 6 259.648 000 265 56 40.77 85 56 42.46 80.72 SITE 7 LASER DISC 268 54 2.92 88 54 23.75 87.006 *Ellpsodal postons as carred nto area through the Transcontnental Traverse. **Northng = Arzona West Zone -576 86.5768/3.2808 33333 Eastng = Arzona West Zone -22 988.7058/3.2808 33333 The staton s located at the U.S. Army Yuma Provng Ground. It s about 5.2 mles west of U.S. Hghway 95 and about 2.5 mles north of post headquarters. To reach the staton from the Intersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the provng ground, go north on Hghway 95 for 7.4 mles to the juncton wth Mddle Mtn. Road to the left; turn left and go west and north on Mddle Mtn. Road for 8.3 mles to an astro dome ste on the left; turn left on access road and go west for 0. mle to the astro dome ste and staton. The staton s located near the northwest corner of a 6-foot x 26-foot concrete pad that projects 0.3 foot above ground. It s.0 foot east of the west edge of pad and. feet south of the north edge of pad. The pad s the center one of three concrete pads. Staton Mark: a drll hole. A YPG Geodetc Control dsc stamped: "SITE 7 DISC" and cemented n DA I OCT «I *7w«7 REPLACES D* FORM» l»9» AND»»0, FEB ST WHICH ARE OBtOLETE. I SKETCH DESCRIPTION OR RECOVERY OF HORIZONTAL CONTROL STATION For u* of Al» form,»oo TM 5-237; tho propononl A-3 «"«y ' U.J-Cotl««nl«l Army Command N

UNITED STATES DISC SITE 8 DISC YPG. DMATC 974 LOCALITY STAMPING ON MARK AGENCY (CAIT IN MARKS) YUMA COUNTY. ARIZONA LATITUDI N 33 04' 42 l., 5234 (NORTMING>l«MTIN6l 3 662 906.204 (M) (NORTMING)IBAMIM» ^9, SITE 8 DISC LONGITUDE W 4 2' 20,., I237 (EASTINCMN«nTMIH6l 746 85.968 IM) (EASTINGMNBRTMINB) 927 NAD* GRID AND ZONE WWW YPG GEODETIC CONTROl DATUM DATUM UTM GRID AND ZONE 229.58 (M) 929 MSL ESTABLISHED BY (AGENCY) DMATC DATE ORDER 54 803.62 IM) 28 93.945 IM) YPG** 974 SECOND TO OBTAIN UTM (ZONE ) GRID AZIMUTH, ADD 78" 3j 2.54rOTHE GEODETIC AZIMUTH TO OBTAIN GRID AZ. (ADD)ISUB.) TO THE GEODETIC AZIMUTH AZIMUTH OR DIRECTION GEOD. DISTANCE GRID DISTANCE OBJECT ICEOOFTIOIGRID) BACK AZIMUTH (METERS) (FEET) (METERS) (FEET) IMAffNtTICl SITE 2 DISC 60 24' 55:92 240" 2' 30:98 22.55 a 22 76 58 20.55 256 52 07.62 8 207.004 CM 3 8 8.6 23 2 00,9 A 033.9 IR 23_ 79 52 6.33.252 S2 IfcJ 4 62,545 SITE 9 DISC 85 5 50.94 05 6 0.30 5 359.737 *Elllpsoldal postons as carred Into area through the Transcontnental Traverse. **Northng» Arzona West Zone -576 86.5768/3.2808 33333 Eastng - Arzona West Zone -22 988.7058/3.2808 33333 The staton s located at the U.S. Army Yuma Provng Ground. It s about 3.5 mles west of U.S. Hghway 95 and about 6.5 mles north of post headquarters. To reach the staton from the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the provng ground, go north on hghway 95 for 7.4 mles to the Juncton wth Mddle Mtn. Road to the left; turn left and go west and north on Mddle Mtn. Road for 2.3 mles to a road to the rght; turn rght and go east, upgrade, for 0.5 mle to the top of small hll and the ste of an astro dome and the staton. The staton s located near the west comer of a 0-foot x 2-foot concrete pad that projects 0.3 foot above ground. It s 0.9 foot south of the north edge of pad and. feet east of the west edge of the pad. Staton Mark: drll hole. A YPG Geodetc Control dsc stamped: "SITE 8 DISC" and cemented n a DA. o r r..959 REPLACES O* FORMS ItS* AND ItSO. I FIB ST. MHICH ARC OBSOLETE. SKETCH DESCRIPTION OR RECOVERY OF HORIZONTAL CONTROL STATION For us«of ths form, TM 5-237; tha proponam A-32 '*"'"' '' U S C ", " " ' A'"* C«.«««d.

ffm p wan ITTTTW UNITED STATES DISC STTR 9 DISC YPG. LOCALITY STAMPING ON MARK AGENCY (CAST IN MARKS) *mm* ELEVATION YUMA COUNTY, ARIZONA SITE 9 DISC YPG GEODETIC CONTROL 290.986 (M) LATITUDE LONGITUDE DATUM DATUM N 33 07' 35'.' 7707 W 4 2' Ol'.'lSAl 927 NAD* 929 MSL INORTHINGIIBATTIWBI <EASTINC)(M»RTIIIM» GRID AND ZONE ESTABLISHED BY (AGENCY) 3 668 255.923 IMI 747 209.097 (Ml UTM DMATC WORTHING)l«A»TIN») (EASTING)IMBRTIMMB) GRID AND ZONE DATE ORDER 60 37.669 IM) 28 78.473 (M) YPG** 974 SECOND TO OBTAIN UTM (ZONE ) ORID AZIMUTH. ADO z w wr 78 33 04. 46 T O THE GEODETIC AZIMUTH TO OBTAIN GRID AZ. (ADDKSUB.) TO THE GEODETIC AZIMUTH AZIMUTH OR BIRBBTIBM FROM SOUTH CEOO. DISTANCE GRID DISTANCE OBJECT (G OOFTIC)(«m ( BACK AZIMUTH (METERS) (METERS) IFEET amumm. 62 37' 23/92 20 529.902 IR 22 242 0 3' 00'.40 SITE 7 DISC 09 40 8.02 89 39 37.08 590.007 IR 23 35 03 35.98 25 03 25.39 874.95 SITE 2 DISC 43 7 34.68 223 3 59.26 4 937.44 CM 8 39 5 00.04 39 50 23.50 2 686.923 Ellpsodal postons as carred nto area through the Transcontnental Traverse. **Northng = Arzona West Zone -576 86.5768/3.2808 33333 Eastng = Arzona West Zone -22 988.7058/3.2808 33333 The staton s located at the U.S. Army Yuma Provng Ground. It s about 4 mles west of U.S. Hghway 95 and about 20 mles north of post headquarters. To reach the staton from the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the provng ground, go north on Hghway 95 for 7.4 mles to the juncton wth Mddle Mtn. Road to the left; turn left and go west and north on Mddle Mtn. Road for 6.7 mles to an astro dome and ste of staton. The mark s located near the west corner of a 0-foot x 2-foot concrete pad that projects 0.3 foot above ground. It s.0 foot south of the north edge of pad, 0.9 foot east of the west edge of pad and 3.8 feet southeast of the northeast corner of the concrete pad for the astro dome. Staton Mark: a drll hole. A YPG Geodetc Control dsc stamped: "SITE 9 DISC" and cemented n DA ' ot RCPLACCI "J959-o L "o E> DA FORMI *8*,v e ; T. WHICH SKETCH DESCRIPTION OR RECOVERY OP HORIZONTAL CONTROL STATION For utt of fhl form, T«4 $-237; lh* preponon«ogoncr U.S.CoMl.«!!».! Army Commond.

... ) I UNITED STATES DISC SITE 0 DISC YPG. Dl m& 74 LOCALITY STAMPING ON MARK AGENCY (CAST IN MARKS! ELEVATION YUMA COUNTY, ARIZONA SITE 0 DISC YPG GEODETIC CONTROl 44.64 (Ml LATITUOt LONGITUDE DATUM DATUM N 33 0' 42,., 9280 W 4 24' 23,,, 6468 927 NAD* 929 MSL (NOWTNINOIIIAMIM«! (EASTINGt"l9WflllM«> GRID AND ZONE ESTABLISHED BY (AGENCY) 3 657 254.632 (Ml 742 228.532 IM) UTM DMATC (NOWTHING)(EA>?INB) (**) (EASTINGIINBWTMINB) GRID AND ZONE DATE ORDER 49 299.82 (M) 23 40.563 IM) YPG ** 974 SECOND TO OBTAIN HTM (ZONE ) GRID AZIMUTH. ADD 78 35 Qg. 67 e CEOOImc * 2 ' > " TH TO OBTAIN GRID AZ. laddksub.i TO THE GEODETIC AZIMUTH AZIMUTH OR BIRBTIBN FROM SOUTH OBJECT (GEOOrTIOIOtHB) BACK AZIMUTH CEOO. DISTANCE (METERS) GRID DISTANCE (METERS) (FEET) SITE 2 09 43 ' 32'.40 89 42' 58'. 6 9 672.96 SITE DISC 60 05 38.5 240 05 00.86 2 068.40 IR 2 82 42 36.2 262 4 49.34 2 245.3 SITE 2 DISC 89 55 25.88 269 53 4. 4 988.04 LI SITE 7 DISC 279 3 34.8 99 32 44.28 3 354.386 IRCC 32 4 6.38 4 4 37.09 59.493 M ^Ellpsodal postons as carred nto area through the Transcontnental Traverse. **Northng Arzona West Zone -576 86.5768/3.2808 33333 Eastng = Arzona West Zone -22 988.7058/3.2808 33333 The staton s located at the U.S. Army Yuma Provng Ground. It s about 7 mles west of U.S. Hghway 95 and about 3 mles north of post headquarters. 0 To reach the staton from the Intersecton of U.S. Hghway 95 and the man entrance road (Laguna Road), go north on U.S. Hghway 95 for 7.4 mles to the juncton wth Mddle Mtn. Rd. to the left; turn left on a gravel road and go north and west for 7.6 mles to a road left (Cbola Front Road); turn left and go west for.4 mles to a road rght (Cheyenne Base Road); turn rght and go west for 0.65 mle to an astro dome and the staton ste. The staton s located n the southwest corner of the concrete astro dome pad. Staton Mark: drll hole. A YPG Geodetc Control dsc stamped: "SITE 0 DISC", cemented n a.. DA.^-959»» REPLACES OA FORMS ItR* 0. FES ST. WHICH tolctc. DESCRIPTION OR RECOVERY OP HORIZONTAL CONTROL STATION For u* el Mlt form, IN TM 5-2J7; lh«proponent A.,. "» ' U.S.C«ll«BHl Armx CommonJ.

UNITED STATES LOCALITY YUMA COUNTY, ARIZONA LATITUOe N 33 0' OPIUM (NONTHINCr 3 656 79.097 (M) (NORTHINOeWINB) 48 279.790 IM) m 6f mm DISC (TAMPING ON MARK SITE DISC LONGITUDE W 4 25' 32,.'7295 (CAITINGKWBHTHIWI 740 460.982 (M) leasting)iwerflmme 2 602.209 IM) wwa SITE DISC YPG, DMÄTC 974 AGCNCV (CAST IN MARK!) YPG GEODETIC CONTROL DATUM 927 NAD* GRID AND ZONE UTM GRID AND ZONE YPG** 2.320 DATUM 929 MSL ESTABLISHED BY DMATC DATE 974 (M) ACENCY ORDEN SECOND TO OBTAIN UTM (ZONE ) GRID AZIMUTH. ADO 78 35 47.64TO THE GEODETIC AZ'MUTH TO OBTAIN GRID AZ. (AODIISUB.) TO THE GEODETIC AZIMUTH OBJECT AZIMUTH BR BIRBB^IBM FROM SOUTH GEOO. DISTANCE GRID DISTANCE (GEODETIC) BACK AZIMUTH (METERS) (METERS) (FEET) J SITE 7 DISC 264 39' 26:52 84 4' 3:63 5 23.28 SITE 2 DISC 07 46 2.74 287 45 05.64 3 355.329 IR 2 49 48 05.24 329 47 56.2 863.452 SITE MON, 9 2 05.98 2 06.05 7.68 SITE 0 DISC 240 05 00.86 60 05 38.5 2 068.40 IRCC 274 27 49.9 94 28 47.55 2 788.7 *Ellpsodal postons as carred nto area through the Transcontnental Traverse. **Northng - Arzona West Zone -576 86.5768/3.2808 33333 Eastag - Arzona West Zone -22 988.7058/3.2808 33333 The staton s located at the U.S. Army Yuma Provng Ground. It s about 8.5 mles west of U.S. Hghway 95 and about 2.5 mles north of post headquarters. To reach the staton from the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the provng ground go north on U.S. Hghway 95 for 7.4 mles to the Juncton wth Mddle Mtn. Rd. to the left; turn left, on a gravel road, and go north and west for 7.6 mles to a road left (Cbola Front Road); turn left and go west for 3. mles to a gravel road left; turn left and go south for 0.35 mle to an astro dome and the staton ste. The staton s located n the northwest comer of the concrete astro dome pad. Staton Mark: drll hole. A YPG Geodetc Control dsc stamped: "SITE DISC", cemented n a DA I OCT «4 I *7w*7 REPLACES O» FORM! ItS* AND IMO. FEO S7. WHICH ARC OBSOLETE. SKETCH DESCRIPTION OR RECOVERY OF HORIZONTAL CONTROL STATION For us* of ths form, TM 5-237; «h* preponsnt ( ncr s U.S.CMtlntntal Army Command. A-35

UNITED STATES LOCALITY YUMA COUNTY. ARIZONA LATITUDE N 33 0* 42,., 677 (NORTNINOXI 3 657 24.857 (M) (NORTHINGII 49 324.339 (M) TV PC BP MARK DISC STAMPING ON MARK SITE 2 DISC LONGITUDE W 4 27' 35,., 8534 (EASTINOKWRTMINBI (^C.) 737 240.640 (MI (EA«TING)(MBRTMIWG (^^I 8 43.665 (M) SITE 2 DISC YPG. L AGENCY (CAST IN MARKS) YPG GEODETIC CONTROL DATUM 927 NAD* GRID AND ZONE UTM GRID AND ZONE YPG** 07.795 DATUM 929 MSL (M) ESTABLISHED BY (AGENCY) DMATC DATE J2IL ORDER SECOND. TO OBTAIN UTM (ZONE m GRID AZIMUTH. ADD 78 36 S3*fffS e CEODETIC»ZIMUTH TO OBTAIN GRID AZ. (ADDKSUB.) TO THE GEODETIC AZIMUTH OBJECT AZIMUTH 8W BIRBCTIBM (CEOOtTICK. FRÜH SOUTH BACK AZIMUTH GEOO. DISTANCE (METERS) PGT NO. 2 308 03' 0:02 28, 08' 0:46 82.36 IR 22 00 06 0.9 280 U3 23.06 84.905 IR 22 R 03 24 22.93 283 2 42.4 7867.83 00 86 26 4.69 06 26 4.74 23.924 IR 2 275 43 35.57 95 44 33.56 2774.864 SITE 2 340 34 29.32 60 35 39.72 0099.766 GRID DISTANCE (METERS) (FEET). ; *Ellpsoldal postons as carred nto area through the Transcontnental Traverse. **Northng Arzona West Zone -576 86.5768/3.2808 33333 Eastng = Arzona West Zone -22 988.7058/3.2808 33333 The staton s located at the U.S. Army Yuma Provng Ground. It s about 0.5 mles west of U.S. Hghway 95 and about 3.5 mles north of post headquarters. To reach the staton from the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the provng ground go north on Hghway 95 for 2.7 mles to the juncton wth Martnez Lake Road to the left; turn left and go west for 2.4 mles to a road fork; take the rght fork and go north for 5.9 mles to a gravel road rght (Cbola West Access Road); turn rght and go northeast for 0.75 mle to the juncton wth Water Tank Road; bear left and contnue north for 4.7 mles to a crossroad (Cbola Front Road); turn left and go west for.35 mles to an astro dome and the staton ste. The staton s locaned on the northeast comer of the concrete astro dome pad. Staton Mark: A YPG Geodetc Control dsc stamped "SITE 2 DISC", cemented n a drll hole.. IL' /./ 'I ÄITC Id A-^ «T -T juraodo^ve e> e^ N eoncrctc PAD * DA,o'rJ959 REPLACES D» FORM» 9 *ND l»«0. I FEB»». WHICH ARE OBSOLETE. I SKETCH DESCRIPTION OR RECOVERY OF HORIZONTAL CONTROL STATION For ut«el Itt orm, TM 5-237; th«ptopen*n A 36 nc l' ' U.S-Cm»»ln».»ol Army Cemmond.

LI U u I. fvu s urn UUUfRV UNITED STATES DISC 000. DMATC 974 LOCALITY STAMPING ON MARK AOCNCV (CAST IN MARKS) TTTtmsr YUMA COUNTY, ARIZONA 000 TOPO CENTER 97< DMA 89.652 IM) LATITUDE LONGITUDE DATUM DATUM N 33 0' 25,., 0742 W 4 22' 3V0776 927 NAD* 929 MSL (NOWTMINOI la»im< leastinckntwtiiiwl GRID AND ZONE ESTABLISHED BY (AGENCY) 3 656 788.855 (M) 745 630.839 (Ml UTM DMATC (NORTMINGHBASTINB) (EASTINCIINBRTMINBI (# ) GRID AND ZONE DATE ORDER 48 729.252 IM) 26 786.633 (Ml YPG** 975 SECOND TOOBTA«UTM (ZONE ) GRID AZIMUTH, ADD 78 33 58.09rO THE GEODETIC AZ'MUTH TO OBTAIN GRID AZ. (ADDKSUB.) TO THE GEODETIC AZIMUTH AZIMUTH H BIRB6TIBM FRÜH SOUTH OBJECT (GEODFTICIMMW BACK AZIMUTH SITE 7 DISC 85* 56' 42:46 265 56 40.77 GEOO. DISTANCE (METERS) 80.72 GRID DISTANCE (METERS) (FEET) ^Ellpsodal postons as carred nto area through the Transcontnental Traverse. **Northng = Arzona West Zone -576 86.5768/3.2808 33333 Eastng = Arzona West Zone -22 988.7058/3.2808 33333 The staton s located at the U.S. Army Yuma Provng Ground. It s about 5.2 mles west of U.S. Hghway 95 and about 2.5 mles north of post headquarters. To reach the staton from the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the provng ground go north on U.S. Hghway 95 for 7.4 mles to the juncton wth Mddle Mtn. Road to the left; turn left and go west and north for 8.35 mles to the staton ste on the rght sde of the road atop a small hll. The staton s located 5.58 feet north of the north edge of a concrete pad and 6.56 feet northeast of the northwest comer of the same concrete pad. V. Staton Mark: A Defense Mappng Agency dsc stamped: "000 T0P0 CENTER 974", set n the top of a round concrete post, 2 nches n dameter and projectng 0. foot above the surface. There s a sub-surface mark set n concrete 3 feet below the surface. It s a Defense Mappng Agency dsc stamped the same as the surface mark. 000 DA po, BEPLACE»! 959 "5 L -:. c o", D O» FORMS Itl* FV. ST, WHICH L KETCH DESCRIPTION OR RECOVERY OF HORIZONTAL CONTROL STATION Fof us* o» «hs form, TM «37; «h* prep«r* n t 9«ncr s U.S.CMIIKOTMI Army Command. A-37

V ' "», r- nom UNITED STATES LOCALITY YUMA COUNTY, ARIZONA LATITUDE N 33 0' 43,., 4434 (NORTNINOH 3 657 48.695 ** (Ml (NORTHING) 49 348.094 (M) TYPE OP MARK DISC STAMPING ON MARK UU 974 TOPO CENTER LONGITUDE W 4 27' wnsoo (EASTINCKM«RTMIN8) 737 242.747 (M) (EASTINGMNBRTNING) (*») 8 46.508 (M) tmm 00J.DMATC 974 AOCNCY (CAST IN MARKS) DMA DATUM 927 NAD* GRID AND ZONE UTM GRID AND ZONE YPG** rwrw 07.040 DATUM 927 MSL (Ml ESTABLISHED BY (AGENCY) DMATC DATE 975 ORDER SECOND TOO ' T * IN UTM (ZONE U) GRID AZIMUTH. ADO 73 36 53 5^0 THE GEODETIC AZIMUTH TO OBTAIN GRID AZ. (ADDXSUB.) TO THE GEODETIC AZIMUTH OBJECT AZIMUTH OR DIHKCTIOM IGEODETICH«««««FROM SOUTH BACK AZIMUTH SITE 2 DISC 06"' 26' 4:74 86 26' 4:69 GEOD. DISTANCE (METERS) 23.924 GRID DISTANCE (METERS) (FEET) J *Ellpsodal postons as carred nto area through the Transcontnental Traverse. **Northng = Arzona West Zone -576 86.5768/3.2808 33333 Eastng - Arzona West Zone -22 988.7058/3.2808 33333 The staton s located at the U.S. Army Yuma Provng Ground. It s about 0.5 mles west of U.S. Hghway 95 and about 3.5 mles north of post headquarters. To reach the staton from the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the provng ground go north on Hghway 95 for 2.7 mles to the juncton wth Martnez Lake Road to the left; turn left and go west for 2.^ mles to a road fork; take the rght fork and go north for 5.9 mles to a gravel road rght (Cbola West Access Road); turn rght and go northeast for 0.75 mle to the juncton wth Water Tank Road; bear left and contnue north for 4.7 mles to a crossroad (Cbola Front Road); turn left and go west for.35 mles to the SITE 2 astro dome and the staton ste. The staton s located on the north sde of a cleared area, 77.2 feet north of the northeast corner of the concrete astro dome pad, 78.56 feet north of SITE 2 DISC and 5.0 feet east-northeast of the east corner of a 0-foot x 2-foot concrete pad. Staton Mark: A Defense Mappng Agency dsc stamped: "000 974 TOPO CENTER" set n the top of a round concrete post, 2 nches n dameter and projectng 0.3 foot above the surface of the ground. There s a sub-surface mark set n a drll hole n a rock bured n concrete 3 feet below the surface. It s stamped the same as the surface mark. DA o' 959 REPLACES DA FORMS ISSt AND ItSO. I FEB»' WHICH ARE OBSOLETE. I SKETCH DESCRIPTION OR RECOVERY OF HORIZONTAL CONTROL VTATIOK For us* of As (orm,» TM 5-237; th* proponsnl agency Is U.S.Conlnsntol Army Command. A-38 N

UNITED STATES LOCALITY YUMA COUNTY. ARIZONA LATITUDE N 32 55' 40,., 229 IMORTMINCKIAWIN«) 3 646 35.987 (M) lnorthino) ASTIN<) DISC STAKPINO ON MARK 002 974 TOPO CENTER LONGITUDE W 4 8' 8V6576 (CA$TING)(M>RTNIW8 75 987.25 IM) 38 069.27C IM) 32 84.88 (M) TO DETAIN UTM (ZONE ) ITATI&U QQ2. BMATC 974 AOCNCV (CAST IN MARKS) DMA D>TUM 927 NAD* GRID AND ZONE UTM leastinqinbrtminci (#V GRID AND ZONE YPG** GRID AZIMUTH. ADO SITE 5 969 YPG 5' 33' 3:93 23' 33' 0^99 79.759 PGT NO. 2 63 45 27.2 243 45 24.27 5.787 WWW 267.989 DATUM 929 MSL IM) ESTABLISHED BY IAGENCY) DMATC DATE 975 ORDER mm 78 32 03 7^0 THE GEODETIC AZIMUTH TO OBTAIN GRID AZ. (ADOMSUB.) TO THE GEODETIC AZIMUTH AZIMUTH BR»IRBBTIBM FROM SOUTH GEOO. DISTANCE GRID DISTANCE OBJECT IGEODETICHBRIBI BACK AZIMUTH IMETERS) (METERS) IFEET) ^Ellpsodal postons as carred nto area through the Transcontnental Traverse. **NorthnR - Arzona West Zone -576 86.5768/3.2808 33333 Eastng - Arzona West Zone -22 988.70^8/3.2808 33333 The staton s located at the U.S. Army Yuma Provng Ground. It s about 0.5 mle east of U.S. Hghway 95 and about 6.8 mles northeast of post headquarters. To reach the staton frcn the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the provng ground go north on U.S. Hghway 95 for 3.3 mles to the juncton wth Aberdeen Road to the rght; turn rght and go east for. mles to a crossroad; turn left and go north on W. 3rd Avenue for 4.6 mles to a sharp curve and gravel road left; turn left and go west and north, upgrade, for 0.4 mle to a road fork; take the rght fork and go northeast for 0. mle to the top of the hll and a buldng. The staton s located on top of the buldng, 3.3 feet southwest of the northeast comer of the buldng and 8.95 feet northwest of the southeast comer of the buldng. Staton Mark: A Defense Mappng Agency dsc stamped: "002 974 TOPO CENTER" cemented n a drll hole. SIT* 4. n* looa,., tj/lping l N HILL # DA " ' 959 "" L,:. c o" 0 FV ( REPLACE* DA FORMS l»8»»>, WHICH \Jn 0CT«4l^%*^ AREOBBOLT ^KETgN^ DESCRIPTION OR RECOVERY OF HORIZONTAL CONTROL STATION Par ut* «f *! Urm, TM 5-237; lh«^ pmmnl «ncy f U.S.CMtlnMtal Amy Cmmond. A-39 \

" UUUfRV TTTT löh CARD OF 2, UNITED STATES DISC IE ZX. DMATC WA LOCALITY STAMPING ON MARK JR 2 AOCNCV (CAST IN MARKS) YUMA COUNTY. ARIZONA 97A TOPO CENTER DMA 8.797 (Ml LATITUDE LONGITUDE DATUM DATUM N 33 0' 33,. 672 W 4 25' 49,., 4647 927 NAD* 929 MSL (NORTHINCXf (gasting)lm<w?llh<) GRID AND ZONE tstablismeo BY (AGENCY) 3 656 94.735 (Ml 740 008.378 (Ml UTM U DMATC (NORTMINGIHAITING) (F») (EAST NG)(M«RTMING) * ) GRID AND ZONE DATE ORDER 4? 9?ß.824 (Ml 2 72.708 (M) YPG** ml mm TO OBTAIN UTM (ZONE ) GRID AZIMUTH. ADD 7 r 35 55.86^0 THE GEODETIC AZIMUTH TO OBTAIN GRID AZ. (ADOXSUB.) TO THE GEODETIC AZIMUTH OBJECT AZIMUTH BR BIWBCTION FROM SOUTH GEOD DISTANCE GRID DISTANCE (GEODETIC It«» BACK AZIMUTH (METERS) (METERS) (FEET) SITE 0 DISC 262" 4' 49:34 82 42' 36:2 2245.3 IR 2 RM 2 07 24 3. 22.903 SITE 2 DISC 95 44 33.56 275 43 35.57 2774.864 IR 2 RM 272 3 53. 2.422 SITE DISC 329 47 56.2 49 48 05.24 863.452 Ellpsodal postons as carred nto area through the Transcontnental Traverse. **Northng - Arzona West Zone -576 86.5768/3.2808 33333 Eastng = Arzona West Zone -22 988.7058/3.2808 33333 The staton s located at the U.S. Army Yuma Provng Ground. It s abo west of U.S. Hghway 95 and about 3.5 mles north of post headquart?-.: 8.5 mles To reach the staton from the ntersecton of U.S. Hghway 95 and the -.-n entrance road (Laguna Road) to the provng ground go north on Hghway 95 7.4 mles to the juncton wth Mddle Mtn. Rd. to the left; turn left on a gravel road and go north and west for 7.6 mles to a road left (Cbola Front Road); turn left and go west for 3.5 mles to the staton ste on the rght. The staton s located 50 feet north of the centerlne of Cbola Front Road and 4.0 feet west of a red and whte wtness post. Staton Mark: A Defense Mappng Agency dsc stamped: n the top of a round concrete post, 2 nches n dameter, projectng 0. foot above ground. There s a sub-surface mark set n a drll hole n a rock whch s bured n concrete. The sub-surface mark s a Defense Mappng Agency dsc stamped: "IR 2 TOPO CENTER 974." Reference Mark No. : A Defense Mappng Agency dsc stamped: "IR 2 RM NO 974 TOPO CENTER", set n the top of a round concrete post, 2 nches n dameter, projectng 0.2 foot above ground. It Is located 2.422 meters (70.28 feet) northeast of the staton. "IR 2 TOPO CENTER 974" set N DA. 0^959 REPLACES D* FORM» It»» AND 0. I FEB»7, WHICH ARE OBIOUETE. SKETCH DESCRIPTION OR RECOVERY OF HORIZONTAL CONTROL STATION Fet ua* of ths form, * TM S-237; tht ptopo*n A 40 "^ U U.$.C«lln«nl«l Army Command.

&Llf: * - r-r- Ü u u Ü u u L! LJ CAUHTRV UNITED STATES I LOCALITY YUMA COUNTY, ARIZONA TVM 6» HARK STAMRING ON MARK ITATIdN IR 2, DMATC 974 AGENCY (CAST IN MARKS) CARD 2 OF 2 < M > LATITUOC LONGITUDE DATUM DATUM INORTNINOKCASTINOI (FT (Ml (NORTHINOMEASTINOI (FTl IM) (EASTINOINORTHING) (EASTINOINORTHING) (FT) (M) IFT) (M) ORIO AND ZONE ESTABLISHED BY (AGENCY) GRID AND ZONE DATE ORDER TO OBTAIN ORIO AZIMUTH, ADO * TO THE GEODETIC AZIMUTHI TO OBTAIN GRID AZ. laooksub.) * TO THE GEODETIC AZIMUTH] AZIMUTH OR DIRECTION GEOO. DISTANCE GRID DISTANCE OBJECT IGEOOETICMORIOI BACK AZIMUTH (METERS) (FEET) (METERS) (FEET (MAGNETIC) o f * o m Reference Mark No. 2: A Defense Mappng Agency dsc stamped: "IR 2 RM NO. 2 974 TOPO CENTER" set n the top of a round concrete post, 2 nches n dameter, projectng 0.3 foot above ground. It s located 22.903 meters (75.4 feet) southeast of the staton. U LJ.... DA.^959»s «tplace» DA FORMS IMt D IMO, I PCB ST. WHICH " OSIOLCTE. I SKETCH f N I DESCRIPTION OR RtCOVERY OP HORIZONTAL CONTROL STATION Pet ut* o( Ihl (arm, «TM $.237; h* ^MMIII 9«ncr U U.S.CMIIKMMI Army Command.

UNITED STATES DISC IR 22. DMATC 974 LOCALITY AOENCV (CAST IN MARKS) YUMA COUNTY, ARIZONA LATITUDE N 33 02' 28'.' 7749 (NORTMING)f STAMPING ON MARK JR 22 974 TOPO CENTER LONGITUDE W 4 32' 43,,, 7450 (EASTINOOKWT 6) 3 658 355.37 (M> 729 27.34 IM) (EASTING)(N9WTMIN6) 50 80.776 IM) 0 434.435 (Ml ITTM (7.mv. n (NORTHING) TO0 ' TAIW TO OBTAIN OBJECT PGT NO. 3 AZIMUTH OW BIWBCTIBN (CEOOFTICII IMABNBTIBI DMA DATUM 927 NAD* GRID AND ZONE UTM GRID AND ZONE YPG** 328.50 DATUM 929 MSL IM) ESTABLISHED BY (AGENCY) DMATC DATE 974 ORDER GRID AZIMUTH, ADD 7g' 39 39 QgTO THE GEODETIC AZIMUTH GRID AZ. (ADD)(»UB.) FROM SOUTH BACK AZIMUTH 230 42' 00:70 50 5' 28:26 GEOO. DISTANCE (METERS) I 34732.558 IR 22 RM 2 59 46 36. 5.236 IR 22 R 29 58 04.27 39 58.33 522.988 SITE 9 DISC 242 3 00.40 62 37 23.92 20529.902 SITE 8 DISC 256 52 07.62 76 58 20.55 8207.004 IR 22 RM 270 53.?.9ft? SITE 2 DISC 280 03 23.06 00 06 0.9 84.905 VA TO THE GEODETIC AZIMUTH GRID DISTANCE (METERS) (FEET) *Ellpsoldal postons as carred nto area through the Transcontnental Traverse. **Northlng = Arzona West Zone -576 86.5768/3.2808 33333 Eastng - Arzona West Zone -22 988.7058/3.2808 33333 The staton s located on a small top on a east-west rdge lne, wthn the Imperal Natonal Wldlfe Refuge, about 6.6 mles northwest of Fshers Landng,.2 mles west of Yuma Wash., 0.6 mle north of the Colorado Rver and 0. mle south of the Yuma Provng Grounds Reservatons Boundary. The staton s marked by a Defense Mappng Agency survey dsk set n the top of a large concrete mass projectng nch above ground. The dsk s stamped: "IR 22 TOPO. CENTER 974." It s on the hghest pont. Reference Mark No. s a Defense Mappng Agency survey dsk grouted nto a drlled hole n outcroppng bedrock about 2 feet lower n elevaton than the staton and 5.962 meters east of the staton mark. The dsk s stamped: "IR 22 R.M. NO. TOPO. CENTER 974." Reference Mark No. 2 s a Defense Mappng Agency survey dsk grouted nto a drlled hole n outcroppng bedrock about 2 feet lower n elevaton than the staton and 5.236 meters north-northwest of the staton mark. The dsk s stamped: "IR 22 R.M. NO. 2 TOPO. CENTER 974." The staton was reached by helcopter. No azmuth mark was set for ths staton. DA.:??"..959:s'v «EPLACES DA FORMS l«s* o. t FIB S'. WHICH SOLETE. I SKETCH DESCRIPTION OR RECOVERY OF HORIZONTAL CONTROL STATION For» o«rtls «orm, TM 5-237;»ha proponent Ä /o t««!'' U-»-Contl B ontol Army ComnwnJ. N I

Q U ü U u [J L! UNITED STATES LOCALITY YUMA COUNTY, ARIZONA LATITUDE N 33 02' 4'., 78.S8 (NORTMINO)IBO»?>MBI 3 658 763.800 **) (M) (NORTHING) 5 200.042 (M) TYPE OF MARK DISC (TAMPING ON MARK IR 22 R LONGITUDE W 4 32* 30,.'7974 (EASTING)INaRTMINC) 729 543.882 (*») (M) (EASTINGMNBRTMINBI 0 773.406 (Ml WTTIOT IR 22 R. DMATC 97 AOCNCY (CAST IN MARKS) DMA DATUM 927 NAD* GRID AND ZONE UTM GRID AND ZONE YPG** h LEVATION 288.440 (Ml DATUM 929 MSL ESTABLISHED BY (AGENCY) DMATC DATE 975 ORDER VA TO OBTAIN UTM (ZONE ) GRID AZIMUTH, ADD 78 39 32. 45YO THE GEODETIC AZIMUTH TO OBTAIN GRID AZ. (ADDIISUB.) TO THE GEODETIC AZIMUTH FROM SOUTH OBJECT BACK AZIMUTH AZIMUTH BR BIRBBTIBM (GEODFTIC) dumaam GEOO. DISTANCE (METERS) tltbkti IR 22 39 58' l:33 29 58' 04:27 522.988 SITE 9 DISC 243 05 30.88 63 47.35 20047.898 SITE 2 DISC 283 2 42.4 03 24 22.93 7867.83 IR 22 R RM 232 44 34. 5.535 IR 22 R RM 2 333 27 26. 3.98 GRID DISTANCE (METERSI (FEET) Ellpsodal postons as carred nto area through the Transcontnental Traverse. **Northng = Arzona West Zone -576 86.5768/3.2808 33333 Eastng = Arzona West Zone -22 988.7058/3.2808 33333 The staton s at the U.S. Army Yuma Provng Ground. It s near the southeast end of the Trgo Mountans about 7 mles northwest of Fshers Landng, about mle west of Yuma Wash and about 0.8 mle north of the Colorado Rver. The staton was reached by helcopter. Staton Mark: A Defense Mappng Agency dsc stamped: "IR 22 R" and set n the top of poured concrete, oval n shape. It s on the hghest pont, at the northeast end of a rocky rdge. It projects 0.2 foot above ground.. Reference Mark No. : A Defense Mappng Agency dsc stamped: "IR 22 R RM TOPC CENTER 975" and set n the top of poured concrete. Tt s 5.535 meters (8.6 ft.) northeast of the staton and about 4 feet lower n elevaton. Reference Mark No. 2 A Defense Mappng Agency dsc stamped: "IR 22 R RM 2 T0P0. CENTER 975" and set n the top of poured concrete It s 3.98 meters (3.06 ft.) southeast of the staton and about 2 feet lower n elevaton. I SKETCH DA ' 0 «M 959»" L '»o" D FV ( REPLACES DA FOHMl It»7, WHICH DESCRIPTION OR RECOVERY OF HORIZONTAL CONTROL STATION For u>* ol Hlt form, TM 5-237; th«pfepan«nt ^.^o «"«f ' U.$.C«ll..mol Army Commond. t N

wmtm UNITED STATES LOCALITY YUMA COUNTY, ARIZONA LATITUDE N 32' 57' 50,., 4644 (NOWTMINGKEASTIMC) IF*I 3 650 208.835 IM) INONTHINCX 42 0.997 (Ml fvh of UAKK DISC STAMPING ON MAHK R Z4 974 TOPO. CENTER LONGITUDE W 4 2' 24,., 792 (EASTINGHMOnTHIMB) (^«l 747 050.233,, (EASTING)WWTHINC) 28 00.596 IM) TTXTOT TO OBTAIN UTM (ZONE ) HRID AZIMUTH. ADD CARD OF 2 IR 24, DMATC 974 ACCNCV (CAST IN MARKS) DMA 20.348 IM) DATUM 927 NAD* GRID AND ZONE UTM GRID AND ZONE YPG** 78* 33 DATUM 929 MSL ESTABLISHED BV (AGENCY) DMATC DATE ORDER 975 SECOND 40r.04rO THE GEODETIC AZIMUTH TO OBTAIN GRID AZ. (ADOMSUB.) TO THE GEODETIC AZIMUTH AZIMUTH OR BnBCTIBN "FROM SOUTH CEOD. DISTANCE GRID DISTANCE OBJECT IGEODETIC)<«m*t BACK AZIMUTH (METERS) (METERS) (FEET) meauaam SITE 2 DISC 26 37' 29! 69 306 34' 07:62 998.602 IR 24 RM 538 37. 5.080 SITE 2 69 9 23.79 249 7 2.29 672.325 IR 24 RM 2 270 42 5. 5.54 SITE 6 DISC 328 40 3.22 48 40 20.63 679.983 *Elllpsodal postons as carred nto area through the Transcontnental Traverse. **Northng = Arzona West Zone -576 86.5768/3.2808 33333 Eastng = Arzona West Zone -22 988.7058/3.2808 33333 The staton s located at the U.S. Army Yuma Provng Ground. It s on the hghest pont of a cone shaped hll about 8.7 mles north-northeast of post headquarters and about 4.0 mles west of the juncton of U.S. Hghway 95 and Castle Dome Road. To reach the staton from the ntersecton of Hghway 95 and the man entrance road to the provng ground, go north on Hghway 95 for 7.4 mles to the juncton wth Mddle Mtn. Road to the left; turn left and go west and north for 4. mles to a dm tral on the rght; turn rght on dm tral and go east for 0. mle to the base of cone shaped hll and end of truck travel. From here pack uphll to hghest pont of hll and ste of staton. Staton Mark: A Defense Mappng Agency (Cast n Mark) dsc stamped: "IR 24 T0P0. CENTER 974" set n a mass of concrete,2.5 feet n dameter that s flush wth the ground. Reference Mark No. : A Defense Mappng Agency dsc stamped: "IR 24 RM TOPO CENTER 974" set n a mass of concrete that s flush wth the ground. It s 5.08 meters (6.67 ft.) southwest of the staton. Reference Mark No. 2: A Defense Mappng Agency dsc stamped: "IR 24 RM 2 TOPO CENTER 974" set n a mass of concrete that Is flush wth the ground. It s 5.5 meters (8.09 ft.) ^ southeast of the staton. N DA.0^.959^ REPLACES UA FOR»S» O DeO. I FES 97, WHICH OBIOLETE. I SKETCH DESCRIPTION OR RECOVERY OF HORIZONTAL CONTROL STATION For ut* öl «tt form, TM 5.237; th«prepen«nt /\ 44 8,,c ', ' U.$.C»nllM,»ol Amy Command.

CARD 2 OF 2 COUNTNY UNITED STATES TTfüHnSÄKF ITATtON IR 2A DMATC 974 LOCALITY YUMA COUNTY, ARIZONA STAMPING ON MARK AOCNCY (CAST IN MARKS) ILCVATION LATITUDC LONGITUDE DATUM DATUM (^Tl (Ml (NORTNINGKIASTINOI (NORTMINGKEASTING (FT) (Ml (»Tl (CASTINGKNONTHINO) (EASTINGKNORTHINCI (FTl (M GRID AND ZONE CSTAtLISHCO BY (AOCNCYI (FT) GRID AND ZONE DATE ORDER (Ml (M) L TO OBTAIN GRID AZIMUTH, ADD TO THE GEODETIC AZIMUTH TO OBTAIN GRID AZ. (ADDKSUB.I TO THE GEODETIC AZIMUTH AZIMUTH OR DIRECTION GEOO. DISTANCE GRID DISTANCE OBJECT (GEOOFTIC)IGRID) IACK AZIMUTH (METERS) (TEET) (METERS) (FEET) (MAGNETIC) Sub-Surface Mark: A Defense Mappng Agency dsc stamped: "IR 24 TOPO. CENTER 974" and cemented n a drll hole n rock bured n concrete 3 feet below ground surface. DA ABU «S\E?/\ REPLACES O» ronmt It»* rwn,] y^h *ND»«0 I FEB S7, WHICH OCT «4 I ARE OBSOLETE. I SKETCH DESCRIPTION OR RECOVERY OF HORIZONTAL CONTROL STATION For u* ol Alt (arm, TM 5-237; th«prapencnt n^flc " " er '' U.$.C«llWBf«Arm, Comwad. N

CARD OF 2 UNITED STATES DISC IRCC. DMATC 974 LOCALITY STAMPING ON MARK AGENCY (CAST IN MARKS) YUMA COUNTY. ARIZONA LATITUDE N 33 0' 02V390 (NOWTHINGKEASTIMgl 3 656 030.203 (Ml (NORTHING) IRCC 974 TOPO CENTER LONGITUDE W 4 23' 45,.'6330 (EASTINCIINtR?IIIM6l { ++) 743 246.08 Ml (EASTINCKNORTMING) DMA DATUM 927 NAD* GRID AND ZONE UTM GRID AND ZONE SITE 7 DISC 253 22' 5.'35 73 23' 04:09 2422.89 IRCC RM 73 24 53. 24.53 SITE DISC 94 28 47.55 274 27 49.9 2788.7 SITE 0 DISC 4 4 37.09 32 4 6.38 59.493 IRCC RM 2 63 20 3. 3.606 48.976 DATUM (Ml 929 MSL ESTAILISHED BY (AGENCY) DMATC DATE ORDER 48 044.943 IM) 24 380.362 (M) YPG** 975 SECOND TO OBTAIN UTM (ZONE ) GRID AZIMUTH. ADD 34 49. 47 TO THE GEODETIC AZIMUTH TO OBTAIN GRID AZ. IADDIISUB.) TO THE GEODETIC AZIMUTH AZIMUTH BW BIRB^IBM FROM SOUTH OBJECT (GEOOETICXBRIBI BACK AZIMUTH GEOD. DISTANCE (METERS) GRID DISTANCE (METERS) (FEET) *Ellpsodal postons as carred nto area through the Transcontnental Traverse. **Northng = Arzona West Zone -576 86.5768/3.2808 33333 Eastng = Arzona West Zone -22 988.7058/3.2808 33333 The staton s located at the U.S. Army Yuma Provng Ground. It s about 6.5 mles west of U.S. Hghway 95 and about 2.5 mles north of post headquarters. To reach the staton from the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the provng ground go north on U.S. Hghway 95 for 7.4 mles to the juncton wth Mddle Mtn. Road to the left; turn left on a gravel road and go north and west for 7.6 mles to a road left (Cbola Front Road); turn left and go west for.4 mles to a road rght (Cheyenne Base Road) and the staton ste. The staton s located 76.2 feet south of the centerlne of Cbola Front Road and 20.0 feet west of the extended centerlne of Cheyenne Base Road. Staton Mark: A Defense Mappng Agency dsc stamped: "IRCC 974 TOPO CENTER", set n the top of a round concrete post, 2 nches n dameter and projectng 0.2 foot above the ground. There s a sub-surface mark set n a drll hole n a rock whch s bured n concrete, 3 feet below the surface mark. It s a Defense Mappng Agency dsc stamped: "IRCC 974 TOPO CENTER." Reference Mark No. : A Defense Mappng Agency dsc stamped: "IRCC RM 974 TOPO CENTER", set n the top of a round concrete post, 2 nches n dameter and projectng 0.2 foot above the ground. It s 24.54 meters (79.24 feet) west of the staton mark. DA,:^959 : MCPLACESD* " L: ",D FORM» Its* CB ST. WHICH - B. f SKETCH DESCRIPTION OR RfCOVERY OF HORIZONTAL CONTROL STATION For ut* of AU Isrm, TM 5-237; ha pra^mant n *g «SMcy I«U.S.CMIIMIIMI Army Common.

UNITED STATES LOCALITY YUMA COUNTY. ARIZONA TVK OP MARK CARD 2 OF 2 IfATIW IRCC, DMATC 97A STAtflPINC ON MARK AOCNCV (CAST IN MARKS! ELEVATION LATITUDE LONG TUOC DATUM DATUM rtl IM) (NORTHINGMEASTINO) (NORTHINOKEASTINO) (FT) IM) (FT) (M) (EASTINCKNORTHINO) (EASTINGXNORTNING) (FT) IM) (FT) (M) ORIO AND ZONE ESTABLISHED er IAOENCVI ORID AND ZONE DATE CRDER TO OBTAIN ORIO AZIMUTH, ADD TO THE GEODETIC AZIMUTH TO OBTAIN GRID AZ. (AODKSUB.) TO THE GEODETIC AZIMUTH AZIMUTH OR DIRECTION GEOO. DISTANCE GRID DISTANCE OBJECT (GEOOCTICMGRID) BACK AZIMUTH (METERS) (FEET) (METERS) (FEET) (MAGNETIC) Reference Mark No. 2: A Defense Mappng Agency dsc stamped: "IRCC RM NO. 2 974 TOPO CENTER", set n the top of a round concrete post, 2 nches n dameter and projectng 0.3 foot above the ground. It s 3.607 meters (44.64 feet) north of the staton mark. DA ' 0 REPLACES "" 959 "^"o", 0 DA FOHMI!,*/. ST, WHICH Un IOCT««l^*^^ AHEOBOLtTC N LJK ETCH DESCRIPTION OR RKCOVERY OP HORIZONTAL CONTROL STATION For UH et Alt Urm, TM $.237; lh* prepanant Ofntr I» U.S.CMllnmMl Army Command. A-47

. ^«.._*^:.. UNITED STATES LOCALITY YUMA COUNTY. ARIZONA LATITUDE N 33 07' 2,., 5423 (NORTNINC)IEASTIMG) 3 667 527.627 (Ml (NORTHINGKEASTIMC) TYPE OF MARK DISC STAMPING ON MARK IR 23 974 TOPO CENTEt LONGITUDE W 4 2' 20,., 5244 IEASTINGIINWTMIN») (^«) 746 725.00 t»«(eastincmmbrtminb) HATI5U IR 23. DMATC 974 AGENCY (CAST IN MARKS).m. DATUM 927 NAD* GRID AND ZONE UTM GRID AND ZONE raw? 279.040 DATUM (M( 929 MSL ESTABLISHED BY (AGENCY) PMATC.. DATE ORDER 59 425.002 IM) 28 22.23 (Ml YPG** TO OBTAIN UTM (ZONE ) GRID AZIMUTH. ADD /8 33 5.96 TO g CCODETIC AZIMUTH TO OBTAIN GRID AZ. (ADDIISUB.) TO THE GEODETIC AZIMUTH AZIMUTH OR BIRBBTI«FROM SOUTH CEOO. DISTANCE GRID DISTANCE OBJECT (GEODETICIICm*) BACK AZIMUTH (METERS) (METERSI (FEET) IMABNBTICI SITE 8 DISC 359 52 6:l 79 52 UL*2J 4 62.545 IR 23 RM 2 20 39 49. 9.753 IR 23 RM 2 50 7.?&.n9? SITE 9 DISC 2U 03 25.39 35 03 3S.9ft 874.95 *Ellpsodal postons as carred nto area through the Transcontnental Traverse. **Northng - Arzona West Zone -576 86.5768/3.2808 33333 Eastng - Arzona West Zone -22 988.7058/3.2808 33333 The staton s located at the U.S. Army Yuma Provng Ground. It s about 4.0 mles west of U.S. Hghway 95 and about 9.5 mles north of post headquarters. To reach the staton from the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the provng ground go north on U.S. Hghway 95 for 7.4 mles to the juncton wth Mddle Mtn. Road to the left; turn left and go west and north for 6.5 mles to YPG BM966 on the rght and a dm tral to the left; turn left on dm tral and go south-southwest on the rdge, lne for 0.8 mle to the staton ste. Staton Mark: A Defense Mappng Agency dsc stamped: "IR 23 974 T0P0 CENTER", set n the top of a round concrete post, 2 nches n dameter, flush wth the ground. There s a sub-surface mark set n concrete 3 feet below the surface mark. It s a Defense Mappng Agency dsc stamped: "IR 23 974 T0P0 CENTER". Reference Mark No. : A Defense Mappng Agency dsc stamped: "IR 23 RM 974 T0P0 CENTER", set n top of a 2-nch square concrete post, flush wth the ground. It s located 24.09 meters (79.04 feet) northeast of the staton mark. Reference Mark No. 2: A Defense Mappng Agency dsc stamped: "IR 23 RM 2 974 T0P0 CENTER", set n the top of a 2-nch square concrete post, flush wth the ground. It s located 9.25 meters (63.56 feet) northwest of the staton mark. DA FORM OCT «4 959 REPLACES D* FORMI l»9» AND I»e0. FEB ST. WHICH ARC OBSOLETE. A-48 I SKETCH t N I DESCRIPTION OR RECOVERY OF HORIZONTAL CONTROL STATION Fo us«of Al«lärm, TM 5-237; lha propenant ogancr s U.S.CenllMnMl Amy Command.

I B Q Q a a D ü UNITED STATES LOCALITV YUMA COUNTY, ARIZONA LATITUDE N 33 0' 0,., 0074 (M0WTMINC)t«AITtN6l 3 656 96.456 (Ml INORTHINGI 48 297.040 IM) TV*t OF HANK STAMPING ON MARK LONGTUOC W 4 25' 32,.'5959 ICAITINOIWWflHNOI 740 464.027 IM) (E ASTIWGHMOWTMIM») 2 605.788 (Ml TO OBTAIN UTM (ZONE ) TO OBTAIN OBJECT SITE DISC AZIMUTH BR BIRB6TIBM (OEODETICII IMA6NTMI SITE M0N YPG, DMATC 974 CLTVITION 7.899 AOENCV (CAST IN MARKS) DATUM 927 NAD* GRID AND ZONE UTM GRID AND ZONE YPG** T DATUM **) IM) 929 MSL ESTABLISHED BY (AOENCV) YPG DATE ORDER ORIO AZIMUTH. ADO 78 * 35 ' 47. 55TO THE GEODETIC AZIMUTH GRID AZ. (AODKSUB.) FRÜH SOUTH BACK AZIMUTH ' 2 06.-05 9 2 05.98 GEOD. DISTANCE (METERS) JLZ^flf- TO THE GEODETIC AZIMUTH GRID DISTANCE (METERS) (FEET) *Elllpsoldal postons as carred Into area through the Transcontnental Traverse. **Northng «Arzona West Zone -576 86.5768/3.2808 33333 Eastng - Arzona West Zone -22 988.7058/3.2808 33333 Staton descrpton s not avalable at ths tme, date. It wll be furnshed at a later ~ D D n u DA FORM I OCT «4 959 NCPLACEIO* FOKMt! «NO MO. FIB»7, WHICH AHC OBIOLETC. I SKETCH t DESCRIPTION OR RtCOVERY Of HORIZONTAL CONTROL STATION Par» ( «h«urm, TM $.237; thm p,»pn*nt «t«ncy I U.S.CMtlnMtal Arm y Ctmmmn. A-49

COUNTRY UNITED STATES LOCALITY YUMA COUNTY, ARIZONA LATITUDE N 33 05' 34':2965 (NORTNINGIM 3 664 408.483 (Ml TYPE OP MARK BRONZE DISK STAMPING ON MARK CON MON ALT LONGITUDE W 4 23' 42,., 9606 CASTIMGIINeWnlM«! 743 07.525 (Ml lufl&u m CM. YPG. DMATC HZ AGENCY (CAST IN MARKS) YPG GEODETIC CONTROL DATUM 927 NAD* GRID AND ZONE UTK LEVATION 209.669 (Ml DATUM 929 MSL ESTABLISHED BY (AGENCY) (NORTMINCMEAMINB) (EAtTINC)ltHRTIIIIH) GRID AND ZONE DATE ORDER 56 420.556 (M) 24 50.75 (Ml YPG** TO OBTAIN UTM (ZONE ) GRID AZIMUTH. ADD w.ik. 37.65 TO THE CEOOETIC AZ'MUTH TO OBTAIN GRID AZ. (AOOMSUB ) TO THE GEODETIC AZIMUTH OBJECT SITE 8 DISC (CEODFTIC)t«mm IMRCMtTICI 293 7 ' 00.'9 BACK AZIMUTH 3 9 8:6 CEOO DISTANCE (METERS) 4033.9 YPG GRID DISTANCE (METERS) (FEET) Ellpsodal postons as carred nto area through the Transcontnental Traverse. **Northng - Arzona West Zone -576 86.5768/3.2808 33333 Eastng Arzona West Zone -22 988.7058/3.2808 33333 The staton s located on the Yuma Provng Grounds, U.S. Army Test and Evaluaton Connnand. About 6 mles north-northeast of the Man Post area, A.5 mles ncrthnortheast of SITE 0, 2.5 mles west-northwest of SITE 8 and 275 feet east of the ntersecton of Cheyenne Base Road, West Target Road, Red Hll Road and East Target Road. On the top of a low reddsh-brown hll. To reach from the road ntersecton roemoned above go east on a track road, upgrade, for 0.05 mle to the top of hll and the staton. The staton s marked by a YPG Geodetc Control survey dsk set n the top of a 4-nch square concrete post projectng nch above ground. It s 7.40 meters south of a /4 nch dameter steel ppe, 5 feet hgh, wth a retro-drectve prsm attached to t (PATS 3). No reference marks or azmuth mark were establshed for ths staton. DA.0^959 «NO IM0. I f [n «? OHICM RE OBSOLETE I SKETCH DESCRIPTION OR RECOVERY OF HORIZONTAL CONTROL STATION For wt«ml *, lerm, TM S-237,- h«p«ap*n*n«a-b0 t»"«r I«U.S.CoMl«n»«l Armr C»«d. N

am UNITED STATES LOCALITY YUMA COUNTY. ARIZONA LATITUDE N 33 08' 42'.'4326 INORTMINOXBRtflMW,**, 3 670 265.926 (» > IMOWTHINCHEMTINtl SITE 9 DISC TYPE OF MANK BRONZE DISK STAMPING ON MARK CM 8 LONGITUDE W 4 22' 08V006 HAf&H CM 8. YPG. DMATC 974 ACCNCY (CAST IN MARKS) ELEVATION YPG GEODETIC CONTROL DATUM 927 NAD* leastinciimortiiin«) &+) CRIO AND ZONE 745 424.589 *«UTM (EA$TING)III9RTMIM«) ^^) GRID AND ZONE 270.742 (M) DATUM 929 MSL ESTAtlLISHEO BY (AGENCY) YPG DATE ORDER 62 20.277 (Ml 26 997.808 m YPG** TooTA.N HTM f Z Q NR yj GRID AZIMUTH, ADD 78 33 38.49 TO TH g OEODETIC AZIMUTH TO OBTAIN GRID AZ. (ADDKSUB.) TO THE GEODETIC AZIMUTH AZIMUTH OR BIRBCTIQM FROM SOUTH OBJECT (GEODETICIMMO«BACK AZIMUTH 39" 50' 23.'50 29 5 oo;o4 CEOD. DISTANCE (METERS) 2686.923 GRID DISTANCE (METERS) (FEET) *Ellpsoldal postons as carred nto area through the Transcontnental Traverse. **Northng = Arzona West Zone -576 86.5768/3.2808 33333 Eastng = Arzona West Zone -22 988.7058/3.2808 33333 The staton s located on the Yuma Provng Grounds, U.S. Army Test and Evaluaton Command. About 20 mles north-northeast of the Man Post area,.5 mles northnorthwest of SITE 9 and 0.3 mle northeast of the ntersecton of Target Boundary Road and East Target Road. To reach from SITE 9 go west on Mddle Mountan Road for 0.5 mle to the Intersecton wth Target Boundary Road, turn rght and go northerly on Target Boundary Road for.4 mles to a track road rght (0. mle southeast of Intersecton of Target Boundary Road and East Target Road) turn rght and follow track road along low rdge lne for 0.5 mle to the staton. The staton s marked by a YPG Geodetc Control survey dsk set n the top of a 4-nch square concrete post projectng 3 nches above ground. It s 6.74 meters west-southwest of a 2 /4-ch dameter steel ppe that s 4.5 feet hgh (LASER 9 NO ). No reference marks or azmuth mark were set for ths staton. DA ' ot nepl*ce> n»»ohm, tt " 959-o-" 0 FIB»J. WHICH lolc TE, I SKETCH DESCRIPTION OR RECOVERY OF HORIZONTAL CONTROL STATION For ut* o( *otm, TM S-237; IK«proponent A-5 «"«r ' U.SXoMlnonfol Arm, CommoBj. N

GPS-YP6 975 PRECISE GEODETIC SURVEY STATION NAME LATITUDE LONGITUDE ELLIP. HT. X Y Z DX/DH DY/DH DZ/DH PGT 2 AMS 60 32 55 37.9449N 4 8 23.89766W 242.797 2205948.867 488426.332 344734.828 -.34550 -.76496.54357 PGT 3 AMS 60 33 4 2.67205N 4 5 25.5869W 527.740 294060.088 4869020.23 3476297.628 -.3436 -.76254.5484 HILLTOP USC+GS 49 33 6 5.37693N 4 7 56.6854W 39.85 MPS 25 DMATC 74 32 54 3.66447N 4 22 54.4235W 47.456 BENCH MARK C+GS 34 32 48 39.53344N 4 22 35.60092W 66.40 2200926.489 4874724.96 3463643.322 22297.84 4882593.485 3444644.805 224733.372 4887667.656 343623.04 -.34470 -.76347.5466 -.34660 -.76473.5439 -.34689 -.76554.5487 SITE DMATC 74 32 52 3.3759N 4 25 8.60523W 6.8 226983.528 4882995.39 344540.255 -.34723 -.76479.54270 SITE 2 DMATC 74 32 56 33.46254N 4 25 26.54703W 30.052 225528.488 ^878663.35 ^^508.983 -.34700 -.764.54380 SITE 3 DMATC 74 32 56 5.4555N 4 20 23.2852W 27.229 2^08576.639 4882409.392 3447832.282 -.3459 -.76469.54369 SITE 6 DISC YPG 32 57 3.60938N 4 2.7868W 78.954 22090.865 4880552.7 3450038.725 -.34599 -.76440.54404 SITE 7 DISC YPG 33 24.88889N 4 22 6.805W 62.757 220909.44 4876278.877 3456057.660 -.34598 -.76373.54498 A-52

;: u STATION NAME GPS-vpG 975 PRECISE GEODETIC SURVEY LATITUDE LONGITUDE ELLIP. HT. X Y Z DX/DH DY/DH DZ/DH SITE 8 DISC YPG 33 4 42.52338N 4 2 20.2366W 206.838 2206339., )65 4873887.627 34685.02 -.34556 -.76335.54579 SITE 9 DISC YPG 33 7 4 2 35.7707N.5406W 268.766 22047.243 487482.67 3465689.876 -.34530 -.76297.54649 SITE 0 DISC YPG 33 4 24 42.92796N 23.6468W 22.054 22893.87 4874605.934 345650.407 -.34643 -.76348.54506 SITE DISC YPG 33 4 25 9.44669N 32.72953W 96.690 223750.024 4874358.825 3455623.870 -.34673 -.76344.54492 SITE 2 DISC YPG 33 4 27 42.6766N 35.85335W 85.5 226423.555 487258.407 3456474.653 -.3475 -.7635.54506 IR 2 DMATC 74 33 4 25 33.6725N 49.46472W 96.97 223976.426 4873807.0 3456248.227 -.34676 -.76335.54502 IR 22 DMATC 74 33 2 4 32 28.77487N 43.7446W 305.(90 2223449.465 4868658.422 3457785.592 -.34823 -.76252.54524 IR 22R TC 75 33 2 4.78578N 4 32 30.7974W 265.640 2223039.2 4868578.625 3458099.756 -.3487 -.7625.54530 002 DMATC 74 32 55 40.229N 4 8 8.6576W 245.589 220580.736 4884bl.257 344792.682 -.34548 -.76496.54358 000 DMATC 74 33 2b.0749N 4 22 3.07765W 66.952 22089^6.263 487632.473 345606s.732 -.34597 -.76374.54498 4-53

GPS-YPG 975 PRECISE GEODETIC SURVEY. STATION NAME LATITUDE LONGITUDE ELLIP. HT. X Y Z DX/DH DY/DH DZ/DH CAMERA SITE 4 32 4 54 23 5.6;92N 9.04A67W 48.998-223307.43-488244.852 3444684.555 -.34666 -.76470.54320 SITE MON 33 4 00 DMATC 74 33 4 25 27 0.00740N 32.59592W 95.299 43.44337N 35.74999W 84.340-22374.798-4874349.00 3455636.506-22645.479-4872507.3 3456494.63 -.34672 -.76344.54492 -.3474 -.7635.54506 IR 23 DMATC 74 33 4 7 2 2.54226N 20.52440W 256.790-2205325.845-487622.206 3465084.007 -.34540 -.76299.54640 IR 24 DMATC 74 32 4 57 2 50.46439N 24.79206W 78.858-2209293.605-48808.332 3450526.033 -.34602 -.76434.544 IRCC DMATC 74 33 4 23 2.3904N 45.63 K)OW 26.476-22277.48-4875636.685 3455456.732 -.34634 -.76364.54489 CM 8 YPG 33 4 8 22 42.43258N 8.0U63W 248.242-220589.67-4869729.47 3467398.38 -.34547 -.76269.54676 CM YPG 33 4 SITE 5 969 UPG 32 4 5 23 55 8 34.29650N 42.96063W 87.69 36.4946N 24.07638W 236.926-2209348.42-487550.62 346250.643-220596.063-488442.052 3447094.53 -.34603 -.76299.54600 -.34550 -.76496.54357 A-54

- T!- n L PROJECT LOCATION YPG ARIZONA ASTRONOMIC RESULTS AZIMUTH MARK STATION PGT 2 AMS 60 SITE IJL DMATC 74 ELEVATION 265.20n souw E matc EuevAToN 83.80m SOURCE DMATC TT SOUTH \ LATITUDE LONGITUDE AZIMUTHl «r am MEAN OBSERVED VALUE 237 49 7.79 REDUCTION TO SEA LEVEL 0.03 0.02 REDUCTION TO POLE 0.26 0.05 0.2 DIURNAL ABERRATION 0.32 ECCENTRIC REDUCTION 0.07 0.Q 0.00 ASTRONOMIC RESULTS N 32 52 03.83 W 4 25 4.25 237 49 8.2 STD DEVIATION, RESULT UNIT t.0.22 -J^.^2. t.35.36 OBSERVATIONS ACCEPTED 5 GROUPS 3 SETS 5 POSITIONS OBSERVATIONS REJECTED 0 QRQUPS 9 SETS POSITION METHOD Of DETERMINATION STERNEgK MERIDIAN TRANSIT DIRECTION J. AVSTIN J. AUSTIN J. WHITE O-OANtZATON DMATC PMATC JMIC INSTRUMENT T-4 86967 T-4 86967 T-3 4307 CHRONOMETER DATAMETRICS 227 PVTAMETRICS 227 2E-830 DATES OBSERVED ILOCAL' 3 # S DEC. 7. 5 DBC- 74 S FEB. 75 MEAN GREENWICH CIVIL DATE 4.87 DEC. 74 f.09 DEC. 74 6. FEB. 75 COMPUTER AND ORGANIZATION CSH DMATC CSH DMATC RAK DMATC CHECKER AND ORGANIZATION PSP DMATC DSP "MAT CSH DMATC DATE COMPUTED DATE CHECKED DEC. 74 I DEC. 74 DEC. 74 5 I DEC. 74 FEB. 75 I FEB. 75 INST SUPPORT IPIER TRIPOD ETCI TRIPPD TRIPOD TRIPOD TIME AND POLAR MOTION DATA SKETCH OF CEODETIO CONNECTION STuRCE OF PRECISE T ME(S): WWV SOURCE OF CORRECTION TQ TIME luti): BIH CIRC. NO. D99 'l CORRECT IONISI 'C SIGNAL: -0?22 SOURCE OF POLAR COORDINATES: BIH CIRC. NO. D99 PPOPAOATltN DL I AY: APPLIED sjre DESCRIPTION Hl l'rebow LEVEL lüpperi HORREBO* LEVEL LOWER)»N.INC. LEVEL VER'l-AL CIRCLE LEVEL AZIMj'h CrfOSS LEVEL n 200) IM * S) INSTRUMENT CONSTANTS VIAL NO. "5Ü" -7W VALUE.42.22 rüssr DATE MAR. 74 M4R. 74 FEB. 74 M GEODETIC LATITUDE GFCDETIC LONOTup-; DEFLECTION DATA M 32 0 52' 03."37 W llf 25 ' 08.60 927 NAD st DMATC DEFLECTION IN MERICAN I«,' +0.46 DIFFERENCE IN LO'.OITUOE (A Aat +5.64 PRIME VERTICAL DEFLECTION (V X) COS * LAPLACE CORRECTION (AA X,, SIN 0. +4.74 +3.06 DATUM OR DE R GEODF TIC POSITION BY: L -.PLACE AZIMUTH («237' 49 ' 2l'., 87 ar»a» LAPLACE Co«R IN LATITUDES ft W LONGITuOEr. POSITIVE COMPILED BY; DSP DATE FEB. 75 CHECKED BY; CSH A-55 DATE FEB. 75 REVISED BY: DSP DATE.TUNE 75

j PROJECT YRj r ACTPnurujr PPCIII T«ILOCAT.ON ARIZONA AZIMUTH MARK STATION PGT 3 AMS 60 SITE 2. DMATC 74 J \ ^ ELEVATION 549.60m l 50 ELEVAT,ON """ MÄTC 52-7 3 m SOURCE DM.TC LATITUDE LONGITUDE lazimutm/fr^. ^J_ H \ a H 0 H Ol» MEAN OBSERVED VALUE 205 7 45.86 REDUCTION To SEA LEVEL S 0.02 0.03 RF QuCTlON To POLE S 0.26 E 0.06 + 0.2 0 UNA. ABERRATION + 0.32 ECCENTRIC REDUCTION N 0.35 E 0.37 0.00 ASTRONOMIC RESULTS ^32 56 32.97 W 4 25 3.45 205 7 46.26 STO DEVIATION RESULT UNIT.3.±.26..*.9 \.5,t 2.04 ' OBSfRVAT IONS ACCEPTED 4 GROUPS 3 SETS 6 POSITIONS OBSERVATIONS REJECTED 0 GROUPS 0 SETS 0 POSITIONS METHOD If DETERMINATION STERNECK MERIDIAN TRANSIT DIRECTION 08-,EPVER J. AUSTIN J. AUSTIN C. TAYLOR OH' ANIZATION DMATC DMATC DMATC INS -^ument T-4 86967 T-4 86967 T-3 5289 CHRONOMETER IWTAMETRICS 227 natfhetri r 227 2E-99 DATES OBSF«VtO (LOCAL DEC 74 DEC 74 5 FEB 75 -'. GREENWICH CIVIL DA T E 2. DEC 74 2.6 HEC 74 6.25 FEB 75 CO'.'P TER AND OHCANUATION DSP DMATC DSP DMATC RAK DMATC I CMCCKCII AND ORGANISATION CSH DMAT C CSH DMATC! CSH DMATC ' DATt COMPUTED [DATE CHECKED DEC 74 DEC 74 DEC 74 I DEC 74 FEB 75 FEB 75 INST S'JPPORT IPIER. TRIPOD ETC TRIPOD TRIPOD TRIPOD j TIME AND POLAR MOTION DATA SKETCH OF GEODETIC -ONNECTION \ junct a* oheca: T IV!;,S, WWV RCC o CORRECTION-o-.ME IUTI): BIHCRC. NO. D98 cc»rtct-,-..s 'o SI&N» -0?22 I,. OF POLAR cooronatts: QjH CIKC. NO. D98 v r jpaoa- N BELAY] APPLIED \ INSTRUMENT CONSTANTS DESCRIPTION VIAL NO VALUE 5 DATE ;< A SIT I $ \ H -H«B. A._{ VEL MJPPER 50.42 j MAR 74 U Hr.«Htnr* _EVEL UOWEBl A, W J HAS INO uevt L 749.22 MAR 74 VtPTL.AL CIRCLE LEVEL A/IV" T H CR^SS LE/EL «^00' 'M SI.0397 J-'KB ' W DEFLECTION DATA j F A P FT C AT ITUOE GEQ-IFTIC LONGITUDE IN 32 'tt 33.46 W 4 25 ' 26.55 927 NAD st DMATC D r Fl LCTION IN MERIDAN 0, - 0-0.49 DIFFER' NCE IN LONGITUDE (X. - Knl +4.90 j MIME VERTICAL DEFLECTION (X, - XJ COS «< LAPLACt CORREfTION (\± \u) SIN +4. +2.66 J DA T UM 0 R DER GEODETIC POSITION BY: j APLACE AZIMUTH (a, > 205 7' 48.^92! a,.0+ LAPLACE CORR N LATITUDES ft W LONGITUDES POSITIVE COVflLFD BY: [ DSP DATE FEB 75 CHECKED BY;- : CSH A-36 DATE FEB 75 REVISED BY: DSP DATL JUN 75 j j

IJ LI PROJECT ypq r ACTQAknUr BP<UII T«" LOCATION ARIZONA AZIMUTH MARK STATION SITE 2 DMATC 74 SITE 3 r DMATC 74 tuevaton 52.73m s o urce EMATC ELEVATION 239. 7m SOURCE ^ LATITUDE LONCITUOE AZIMUTH/»»«., J ^ a 0 I «o n MEAN OBSERVED VALUE 96 6 8.77 REDUCTION TO SEA LEVEL s 0.04 + 0.00 REDUCTION TO POLE s 0.26 E 0.05 + 0.0 DIURNAL ABERRATION + 0.32 ECCENTRIC REDUCTION IN 0.27 E 0.09 0.00 I»STBONOWC RESULTS N 32 56 02.85 W 4 20 3*5 96 6 9.9 STO DEVIATION. RESULT UNIT ±.4..29 ±.4.±.24 ±.32.*-.30 OBSERVATIONS ACCEPTED 4 GROUPS 3 SETS 7 POSITIONS OBSERVATIONS REJECTED 0 GROUPS 0 SETS 0 POSITIONS METHOD OF DETERMINATION STERNECK MERIDIAN TRANSIT DIRECTION OBSERVER J. AUSTIN J. AUSTIN C. TAYLOR ORGANIZATION DMATC DMATC DMATC INSTRUMENT T-4 86967 T-4 86967 T-3 5289 CHRONOMETER EATAMETRICS 227 DATAMETTRICS 227 HAMILTON CA'ES OBSERVED (LOCAL' 0 DEC 74 0 DEC 74 3 JAN 75 MEA'. GREENWICH CIVIL DATE.06 DEC 74. DEC 74.08 FEB 75 OMPuTIR ANQ ORGANIZATION DSP DMATC DSP DMATC RAK DMATC CHECKEX AND.RGANI2ATION CSH DMATC CSH DMATC DSP DMATC DATE COMPUTED JoATE CHECKED DEC.74 DEO 74 DECJM DEC 74 FEB 75 FEB 75 INST SUPPORT (PIER. TRIPOD ETCl TRIPOD TRIPOD TRIPOD TIME AND POLAR MOTION DATA ;, -BCE nf PRECISE TIMEISl: WWV SKETCH OP GEODETIC CONNECTION»ounce or ORRFCTION 'O TIME (UTIH BIH CIRC. NO. D99 U T I C jrrec r 0N S. '^ SIGNAL -0?238 A/.4 SOUNCI 3F Po AR coorrnatts: Bj H CIRC. NO. D99 RRORAGATION DtLAY APPJ^EP INSTRUMENT CONSTANTS DESCRIPTION VIAL NO VALUE DATE fas/rts W H 'RtBOW I EVEL (UPPERl 50.42 MAR 74 Q^cr^ MORREB^.». LEVEL LOWERl HANMNG Lfc " t - 749.22 MAR 74 VERTICAc CIRCLE LEVEL A^IVUTH CROSS LEVEL (R 200 'M ' S.0397 FEB 74 DEFLECTION DATA G E 0 r. ET C I ATlTuDE GEPDFTIC LONGITJD F \ N 32 5ß 05.46 W 4 W 23.28 927 NAD st DMATC DEFLECTION IN MERIOAN (^k - 0 ) 2.6 DIFFERENCE IN LDNGITUDE (XA - \c) +7.87 DATUM ORDER GEODETIC POSITION BY; PRIME VERICAL DEFLECTION XA - XI COS * + 6.6 LAPLACF CORRECTION (AA Aü) SIN ^ +4.28 LAPLACE AZIM, H {<,/ QQ 0 J g» 2 3'.'47 a»a; IAPLACE COHR N LATITUDES n w LONGITUDES POSITIVE COMPILED BY: I DSP DATE FEB 75 CHECKED > DATE CSH A-57 FEB 75 REVISED BY: DATE DSP JUN 75

.. -- project YPG r ACTDAklAUr RECIII TC LOCATION ARIZONA AZIMUTH MARK STATION MPS 25 DMATC 74 SITE 6 DISC YPG, DMATC 974 ELEVATION 70.06m SOURCE DMATC ELSVATIOM 20.43m [SOURCE DMATC LATITUDE LONGITUDE AZIMUTH/» r^r. jggm o» «0»» P V MEAN OBSERVED VALUE 22 43 36.27 REDUCTION TO SEA LEVEL f 0.03 + 0.0 «EDUCTION TO POLE f n9.f E 0,05 + 0.0 ;IIURNAL ABERRATION L- 0.32 tccentric REDUCTION N 0.09 E 0.08 0.00 ASTRONOMIC RESULTS N 32 57 28.63 W 4 2 2.0 22 43 36.7 -TD DEVIATION, RESULT UNIT t.2.±.24 ±.8.t.3.4.t.64 OBSERVATIONS ACCEPTED 4 GROUPS 3 SETS 5 POSITIONS OBSERVATIONS REJECTED 0 GROUPS 0 SETS POSITION METHOD OF DETERMINATION STERNECK MERIDIAN TRANSIT DIRECTION OBSERVER J. AUSTIN J. AUSTIN K. ZELLERS! [ ORGANIZATION nlatc DMATC DMATC ss'rment T-4 86967 T-4 86967 T-3 4307 CHRONOMETER natamktric.s 227 DATAMETRICS 227 2E-830! DATES OHSERVED ILOCAL 7 nep 74 7 IJET 74 3.TAN 75 - EAN GREEN.VICH CIVIL DATE «.08 net. 74 8.3 DEC 74.4 FEB 75 COUP'TER AND ORGANIZATION rsh IMATC CSH mutc DSP DMATC CHECKER AND ORGANIZATION DSP DMATC DSP DMATC CSH DMATC T*- TOMPUTED DATE CHECKED J«C 74 ' DEC 74 DEC 74 DEC 74 J"EB 75 MAR 75 INST S'JPPCRT 'PIER TpPOD ETC! TRIPOD TRIPOD TRIPOD f TIME AND POLAR MOTION DATA SKETCH OF GEODETIC CONNECTION j l.»;e OP PRECISE I>.'E(S: WWV S, JCE OP CORREC'ION 0 TIME ' ut : RTH CIRC. NO. D99 CORRECT IONIS' To 3IGNAL: -o^.-n A J r S lunct OP POLAR COOROINA T ES- HTH rrr. NO. n99 PP HAr.A T 'JN DELAY; APPl.TEn I INSTRUMENT CONSTANTS DESCRIPTION VIAL NO VALUE I DATE. N,*'<te JHH EVEL (UPPE>" 50.42 MAR 74,..lBEt.',*. EVEL IL J*EM "ANMNO Lf /I L 749.22. MAR 74 VtRTICAL CIRCLE LEVEL n. TH CR'-.SS Lt -'EL 200' IM SI. 0397 VRH 74 t \>A SIUS \ nanv j DfFLECTION DATA } OE - n tt C l «ITuDE N 32 5f 3l".6 OEO Dt ' C LONGITUCI W 4 2 '.8 DATUM 0 R DER rjeodetc POSITION BY; 927 NAD st DMATC j DIFFERENCE IN LONGITUDE (Aa - ^..j +9.92 LAPLACE CORRECTION (^^ X SIM ^ +5.40 OCFLECTION IN MEPIDAN (0, -.I -2.98 r'^ime VERTICAL DEFLECTION (A - X COS +8.32»PLACE AZIMUTH l a^^ 22 43' 42 I'll a <! LAPLACE CORR [N LATITUDES ft * LONMTuDES POSITIVE COVPIuFD BV; DATE CHECKED BV; DATE RF.'SED BY: DATE! I>SP DEC 74 CSH FEB 75 DSP nn 75 A-58

j n ROJECT YPG - ACTDnunur RF«IM T«IOCATION ARIZONA AZIMUTH MARK SITE 9 DISC YPG. MIATC 974 SITE 7 DISC YPG. DMATC 974 IELEVATI-N 290.99m SOURCE DUIAXC ELEVATION 85>80m [SOURCE jjy^ STATION LATITUDE { LONGITUDE AZIMUTH/«r.-. ^M j 0»» Q t H O w MEAN OBSEHveD VALUE 89 39 30.2 RtDjCTlo. 0 SEA LEVEL S 0,03 0.0 j RF:IIJCTIO» ro POLE S 0.25 E 0.06 + 0. O'<INNAL ABERRATION + 0.32 ECCENTRIC REDUCTION N 0. W 0.07 0.00 '..TR^NOMIC RESULTS N 33 0 23.25 W 4 22 27.36 j 89 39 30.63 j TO DEVIATION RESULT UNIT.3.- 4.26 t. 8, t.32 ±.62.t 2,39 I ISERVA r IONS ACCEPTE[> 4 GROUPS 3 SETS 5 POSITIONS j IbERV» r IONS REJECTED 0 GROUPS 0 SETS POSITION METHOD OF DETERMINAT ION STERNECK MERIDIAN TRANSIT DIRECTION I j SERVER K. COURBIS R. COURBIS J. WHITE L-r,ANl2ATlON DMATC DMATC DMATC Ij-^TRlMENT T -4 86967 T-4 86967 T-3 4307 CHRONOMETER D VTAMETRIC S 227 DATAMETRICS 227 2E-830 DA'r.'..,t..EHVEO ILOCAL 23 NOV 74 25 NOV 74 3 FEB 75 I IKr..EENWICM CIVIL DA T E 2(>.08 NOV 74 26.4 NOV 74 4.25 FEB 75 ' 3MPUTCH AND ORGANIZATION DSP DMATC DSP DMATC DSP DMATC ' l-tcker *ND OROANIATION CSH DMATC CSH DMATC CSH DMATC DATE COMPUTED [DATE CHECKED DEC 74 j DEC 74 DEC 74 DEC 74 FEB 75 MAR 75 INST SUPPORT IPIER TRIPOD ETCI TRIPOD TRIPOD TRIPOD! TIME AND POLAR MOTION DATA SKETCH OF GEODETIC CONNECTION S...fc-t or pt.m-. 3E TIVIEISI; wwv J RTL or,'ocrection '0 TIME lüt " : BIH CIRC. NO. D98 jj.^rtse CT ION b ro SIGNAL - )?94 Is- III t J" 7 POI *R C'JÜR^INATES B I» CIRC. NO. D98 j p PA.AT ION OELAV : APPLIED I k j INSTRUMENT CONSTANTS DESCRIPTION VIAL NO VALUE DATE SITfT A J H '-«t trw r v El cjppfp 50.42 MAR 74 V MORRCIl *.- : - 'EL ILOWI-HJ N ASTJtO * VN IN j LE J* 749.22 MAR 74 V KT A l~ tt VF «.'I", 't. CRC,.;,, LEVEL» / JO) 'M ' S.0397 FEB 74 I so-os'jr'o I DBFLECTION DATA j IT «' Tur,E ^.E' lf',-. ONMT Uf E DATjM OEOOE'IC POSITION BY: I L 33 o 0» 24^9 927 NAD DMATC Lv 4 22 ' 6.8 OR DERl st C.I CMC. H- MERIDAN (.>. -.64 DrCERENCE IN DNOITlOE (^^ ^ J +.8 j f» MC t" r A lef, EC ' ICN (A A cos» ^9.37 LAPLACE OHHECTION (A. A,.) SIN *. f 6.09 L APL ACE A 7IM I c T rr DV- T t* 89 39 ' 36.'72 r» T ' asp FEB 75.HECICED B>:,.Läl. A-59 < ( ; LAPLACE CORR N LATITUDES a W LON'JITUOES POSITIVEI DATE FEB 75 REVISED BV; asp DATE.nrN 75

t" PROJECT LOCATION AZIMUTH MARK YPG ARIZONA STATION ASTRONOMIC RESULTS SITE 2 DISC YPG. DMATC 974 SITE 8 DISC YPG. EMATC 974 ELEVATION 07. SOm I«"""" DMATC ELtvAToN 2 29.7m SOURCE EMATC LATITUDE LONGITUDE AZIMUTHf rom -0 L. MEAN OBSERVED VALUE 60 24 49.44 REDUCTION TO SEA LEVEL 0.04 0.06 0.0 REDutl ION TO POLE 0.25 0.2 DIURNAL ABERRATION 0.32 ECCENTRIC REDUCTION 0.00 w 0.05 0.00.STRONOMIC RESULTS N 33 04 40.07 W 4 2 30.7 60 24 49.89 TD DEVIATION. RESULT UNIT JJ. ^24_ *.6 _t2i_ t.44 t.8 OBSERVATIONS ACCEPTED 4 GROUPS 3 SETS 7 POSITIONS OBSERVATIONS REJECTED 0 GROUPS 0 SETS POSITION METHOD OF DETERMINATION STERNECK MERIDIAN TRANSIT DIRECTION J. AUSTIN J. AUSTIN H. WOOEWORTH ORGANIZATION DMATC DMATC DMATC INSTRUMENT T-4 86967 T-4 86967 T-3 4307 CHRONOMETER DATAMETRICS 227 EATAMETRICS 227 2E-830 DATES OBSERVED (LOCAL' 24 NOV 74 24 NOV 74 8 FEB 75 I MEAN GREENWICH CIVIL DATE 25.09 NOV 74 25.4 NOV 74 9.3 FEB 75 COMPUTER AND ORGANIZATION CSH DMATC CSH DMATC DSP DMATC CHECKER AND ORGANIZATION DSP DMATC DSP DMATC CSH DMATC DATE COMPUTED DATE CHECKED DEC 74 I DEC 74 DEC 74 j DEC 74 FEB 75 MAR 75* INST SUPPORT (PIER, TRIPOD ETCl TRIPOD TRIPOD TRIPOD urce Of IRECISE T ME(SI; TIME AND POLAR MOTION DATA wwv SOURCE OP CORRECTION T 0 TIME (uti): RTH CTRC- NO, n9r CORRECTIONISI To SIGNAL: -QglfM S.JJH- E OF P.lLAR COORDINATES' RTH CIRC, NO n9r AGAT lo»' OfcLA> APPt.TET) SKETCH OF GEODETIC CONNECTION DESCRIPTION H. BHEBOW ' ErfEL.UPPER! BRFBr* LEVEL IL0WER HAN.ING I INSTRUMENT CONSTANTS VIAL NO. Tu" 749 VALUE.42.22 DATE MAR 74 MAR 74 s/r/a s VERIICAL '-l«c..e LEVEI AZIMUTH CKOSS LEVEI I«ZOOl (.0397 FEB 74 DEFLECTION DATA GETDETIC LONGITUDE DATUM 0» DE> GEODETIC POSITION BY: N 33 04' 42."52 hv llf 2 ' 20'!l2 927 NAD st DMATC,'. IN MERIOAN I0_ I DIFFERENCE IN LONGITUDE (X4 - ^ J -2.45 ^0.59 PBI'.'l VERTICAL DEFLECTION IX X ) COS LAPLACE CORRECTION (A +8,87 A. SIN «f 5.78.ABLACF A7IMUTH C 60' 24 55.'67 O Cr.Mpl! ED Hr: \TF CHECKED IV; DATE REVISEl' B. -O* LAPLACE CORN IN LATITUDES ft W LONf.l'UOES POSITIVE IJSP FEB 75 CSH FEB 75 DSP.TUN 75 A-60

PROJECT YPQ - ACTonynur PC<III TC LOC*T,ON ARIZONA A ZIMUTH MARK STATION IR 22 DMATC 74 SITE 9 DISC YPG. DMATC 974 j IELEVATION 328.5 m [SOURCE DMATC ELEVATroM 290.99 n sounce DMATC { LATITUDE j LONGITUDE AZIMUTH/«r«., ^ \ o I «0 N am MEAN OBSCflvru VALUE I 62 37 7.07! «EOJCTIOM r, SEA LEVEl S 0.05 H- 0.02 I "fjuctlom To POLE S 0.25 E 0.06 r 0-2 IDLRNAL ABENNATlON r 0 ' 32 IfCCENTmC REDUCTION 0.00 W 0.05 0.00 lajibrnomic RESULTS N 33 07 3.77 W 4 2 09.75 62 37 7.53 DEVIATION RESULT UNIT.23.t.46 \t.4,*.25.43.*-.73 j. B'.tBVAT.ONS ACCEPTED 4 GROUPS 3 SETS 6 POSITIONS B'.f «VATIONS REJECTED 0 GROUPS 0 SETS 0 POSITIONS VETM D O C Dt TERMINAT-.»N STERNECK MERIDIAN TRANSIT DIRECTION j BSEHVFR R. C0URBIS R. COURBIS J. WOLF IHGANI ZAT ION DMATC DMATC DMATC NS'» ENT T-4 86967 T-4 86967 T-3 4305 I u.lrtnr.mt f R DATAMETRICS 227 DATAMETRICS 227 2E-25 : * " *. jbserved ILOCAL 23 NOV 74 23 NOV 74 6 FEB 75.?», GREENWICH CIVU ^ATE 24.2 NOV 74 24.8 NOV 74 7.6 FEB 75 j f "OWP Itf«AND ORGANIZATION CSH DMATC CSH DMATC DSP DMATC M'-Ct'ER AND ORGANIZAT ON DSP DMATC DSP DMATC CSH DMATC PA" COMPUTED DATE CHECKED DEC 74! DEC 74 DEC 74 IDEC 74 FEB 75 MAR 75 INST SUPPORT PIER TRIPOD E TCl TRIPOD TRIPOD TRIPOD j I TIME AND POLAR MOTION DATA SKETCH OF GEODETIC CONNECTION. "t of PR[ CIT rmcis): wwv I RCI Of C lrr r r' ON T 0 TIME T " BH CIRC. NO. D98 ' CORRECT lo.'s To SlCMAL' -OSlSR JS 'R t OF POLAR COOM^INATt -5. BIH CIRC. NO. D98 N P' It- «".AT IOH DEl AY; APPl.TF.n l INSTRUMENT CONSTANTS OtSCRIPTIOM VIAL NO VALUE DATE RRI UM* [ vt L UPPER'. 50.42 MAR 74 4 \ It. ^ror.la.tv ILOINL B A' ^ )^rms ' HA N'ttNlj t E Vt I 749.22 MAR 74 VERT ICAl l«.e Ll VEI». f H rr < LEVEL VlH 2oOI (M S.0397 FEB 74 \ j DEFLECTION DATA I. f ' ' t T < /..tt- N 33 07 35." 77 '.l I DfTIt L ONCI'I 0- W 4 2' 0;'l5 927 NAD st ^ Gl 'Ul T C POSITION Bv: DMATC : FF tction IN WIDA, <,[, * > -4.00 OIFFFRtNCE IN LCNLIUOF (X. k.. +8.60 j PRI' VERll' A: IFFlECIloN U x ) os «+7.20 l»ptacf (..HHEC'ION (J^ K. SK. 0 +4.70 LAP!ACF AIIMI 'M (" J 62 37' 22'.'23 a «u ; APLACE ro»b N LATH UOES ft * LONC.ITuDFS POSITIVI C 0 M r- U. F D II j D A T F I DSP ; FEB 75 CHECKED 8v : CSH A-6 OATF FEB 75 F v5ed Br: DSP DAU JW 75

PROJECT LOCATIOH YPG ASTRONOMIC RESULTS ARIZONA AZIMUTH MARK STATION SITE 2 DISC YPÜ. DMATC 974 STTK n ntsr HMATr Q7Z. ELEVATION 52.73 m l sou "" DMATC ELEVATION BOUNCE 44.6 a LATITUDE LONCITUOE MEAN OBSERVED VALUE Q9 43 25.9 REDUCTION TO SEA LEVEL 0.02 Q.QQ RCOuCTlO«To POLE OM'hMAL ABERRATION Q.25 L Q.Q6 0.0 Ü.32 FCCKNTRlC RLDuCTlON SLUE. JLÜL- n.nn, < SOMC HfSoLTS N r> m 4n. 2^ W 4 24 0.99 "9 ^ 2f..U S-D DEVIATION RESULT UNIT 3 25 6 28 47.8 M HVA' UNS ACCEPTEL' 4 GROUPS 3 SETS 5 POSITIONS SSERvxroNS REJECTED 0 GROUPS 0 SETS POSITION MCTHOO OF nfttrmn* T ION STERNECK MERIDIAN TRANSIT DIRECTION J. AUSTIN J. AUSTIN K. ZELLERS AN 2*T»ON DMATC DMATC DMATC S^» K Mf N' T-4 86967 T-4 86967 T-3 4307 ( M* }H M Tf R DATAMETRICS 227 DATAMETRICS 227 2E-830 BathVEO r^ocal 22 NOV 74 22 NOV 74 FEB 7ß '/t*n &CCNWCM rvu DA T F 2 3.09 NOV 74 23.5 NOV 74 2.0 FEB 73 C MRU^ffl *NO OAfANltATlON CSH DMATC CSH DMATC DSP DMATC r (CHCA ANÜ üboamt/4 ON DSP DMATC DSP DMATC CSH DMATC OATf... DEC 74 DEC 74 DEC 74 DEC 74 FEB 75 I MAR 75 S PP'JPI pc* 'BIPOD ETC TRIPOD TRIPOD TRIPOD s,brt o> («Etsr Tvns«: TIME AND POLAR MOTION DATA wwv OBREC'ION 'O TIME Ijfll! BIH CIRC. NO. D98 mec * 'ONISI -Q?83 ' - >. th COO«INA' BIH CIRC, MO. MS- [-. \.* -.. * APFLKD SKETCH OF GEODETIC CONNECTION DESCRIPTION H * r. El.um INSTRUMENT CONSTANTS VIAL NO VALUE TAT. DATE MAR 74 Asr*o Z0I s ot f -s INO t.» 749.22 MAR 74 Vf «MLAI ' LCVtl A. I :» J S I f V «L «^n ) IM S.0397 FEB 74 SIT* 0 BC 0 D t T IC N 33 c 0'. A-ITuDE PRIVI vet. IC Al HE» I. A: * ^ A/IMUTM I* COM"'! I'D I ns? 42!'93 N I «- r,0 ^ I FEB 75 Jt JfTIf LCNGIT W 4 U ' 23.65 2.68 +6.5 09 43' 30."34 CECKEC 8» CSH LEFLECTION DATA A-62 * I IM ;.n] r.ro P<,. T to 927 NAD st j DMATC _ OI'TERLNCL IN IONUITJCI \\ + 7,34 LAPLACE CORRECTION IA x ". ^ +4.00 a DATE *l LAPL Af-t C ORR IN LATI'.IOES A W LONOI T UÜI ' POSIMVE FEB 75 PrV3E3 P- CAU DS' JUN 75

PROJtCT YPG r LOCATION ARIZONA..,...».' AZIMUTH MARK STATION SITE 7 DISC YPG, DMATC 974 SITE DISC YPG. MIATC 974 JELevAToH 85.20 m»ou«ct DMATC ELEVATION 2.32 m «o"ct O^TC LATITUDE LONGITUDE " *""("--. x:) O «0 I ff a < M Mt AS OBSERVED VALUE 264 39 2.9 [HEDuCTüH TO StA LEVEL S 0.02! 0.00 «rduct'on TO P' LE S 0.26 E 0.06 + 0.0 lournal ABCMItArCN + 0.32 E'CENTRIC REOU-TION N Ö.JÖ E 0.2 0.00 «ST«DN?MC TSULTS N 33 öl 66.7 W 4 25 38.97 264 39 22.33» C DEVIA'KN RESULT. UNIT t.0.t.$.u...29.49. 2.23 j. Ola»VAT 'JH% A.. PTEO 4 GROUPS 3 SETS 2 POSITIONS OBS-^^«TONS nf.fcted 0 GROUPS 0 SETS POSITION IMETI-^L c r tle" RMIMAT IHN STERNECK MERIDIAN TRANSIT DIRKCTION oesr-urr J. AUSTIN J. AUSTIN C. TAYLOR OII6Alt*T < DMATC DMATC IDMATC I.NT IB^MlN' T-4 86967 T-4 86967 T-3 5289 C"-< NCME'IR DATAMETRICS 227 DATAMETRICS 227 2E-99 0A r oecq.. 2 LOCAL 26 NOV 74 26 NOV 74 25 JAN 75 M AN J.U r '»»'"H JIVlL DATE 27.08 NOV 74 27.4 NOV 74 [26. 8.IAN 75 ICOMrb'tR A-.' ORGANIZATION DSP DMATC DSP DMATC DSP DMATr. cht--er ANU ORGANIZATION CSH DMATC CSH DMATC k:sh DMATC j r«'e ' ' MPu'Er DATE CHECKCO DEC 74 I DEt: 74 DEC 74 DEC 74 FEB 75 MAB 75 '.IT jfp r RfR TRIPOD ETC^ TRIPOD TRIPOD frripon " C TIME AND POLAR M 0T0N DATA SKETCH OP GEODETIC CONNECTION t j. r B»t f rmi :- : WWV > ' *' c**«' TloK To TIME lutii- Bn grc, NO. D98. -Hf l(,n,"" ' D SIGNAL -0^97 j N IT ^^A' CCORDINATIS Bll CIRC. NO. Ü98 J A, rr. APPLIED!, INSTRUMENT CONSTANTS * 0ESCHPTION VIAL NO VALUE DATE H~IUR C B^«ITVEL TLPPFR» 50.42 MAR 74 7!» ; I M ( JO«EVE OWER z * MAN'.I«.!, t E. EL 749. 2 MAR 74 Atrte ' " IC»L CIRCLE LEVEL A7IM T M CROSS. * VEl I «30) IM S>.0397 FI:B 74 0IPLICTION DATA r Tr! ATI'.OE Ml )nrtc LOMCITJDE j N 33 c 0' 09"4 r w 4 2 3^.73 927 NAD st DMATC :,t' ION IN "EHIOAN «, - * -2.68 DlFFCRENCE IN LONGITUDE (A4 X rj +6.24 [ PBI- t vfrtical Of», 4CTION X. - KJ '.OS «+5.23 LAPLACE CORRECTION (^ - X,.l SIN #c +3.40 L"»C( ATIM'JTM C^j 2( 4 0 39' 25? 73 «-, > LAPLACE CO«ll N LATITUDES A w LONGITUDES POSITIVE C..EP H»: loatf j DSP FtU 75 CHICKED»r, CSH A-6J DATUM DATE FEB 75 ORDER GEODETIC POSITION IT REVISED B»: DSP DATf JUN 75 j I

PROJECT "W LOCATION ARIZONA ASTRONOMIC RESULTS A ZIMuTH MARK STATION PGT 2 AMS 60 SITE 2 DISC YPG. DMATC 974 tlev.ton 265.20 m»ouwce QMATC tlevatc 07.80 m ounce DMATC 7] SOUTH \ LATITUOC LOMClTUO AZIMUTH " nmnjuf MT AN oescmvcd VALUE 308 03 06.78 REOUCTION To SEA L-VEL 0.02 0.02 RfDuC'ON TO POLE 0.26 0.06 0. 2 O'LNNAL ABERNArOt 0. 32 ( CENTHC HEDJCTION 0.36 0.36 0.00 ASTSjNOM'C OtSUL'S 33 0 39. E 4 27 40.22 308 03 07.20 S D OEVIAt'ON MSULT, UNIT v r-.23 0 7 35.4 JENV»T,N5 A' CTPTFO 4 GROUPS 3 SETS 6 POSITIONS ubf.ekvat.ons RE ETTEO 0 GROUPS 0 SETS Q POSITIONS MfTHOC ' B Df T (.RMtNAT u>*«sterneck MERIDIAN TRANSITE DIRECTION oeserv B R. COURBIS R. COURBIS R. CAMPBELL DMATC DMATC DMATC N'.»»t Mt»»T T-4 86967 86967 T-3 4304 CHflONOMt^t«DATAMETRICS 227 DATAMETRICS 227 2E-2467 3*TES C.Sf Bv: 27 NOV 74 27 NOV 74 6 FEB 75 :.NUN» IVH DATE 28.08 NOV 74 28.4 NOV 74 7.9 FEB 75 COMet.'t** A^r "An«, 2 A T «uh DSP DMATC DSP DMATC DSP DMVTC rmt'-f» *Hl RGAMIZATIOM CSH DMATC CSH DMATC CSH DMATC CATf C-lC«tD DEC 74 DEC 74 DEC 74 DEC 74 MAK 75 I MAR 7S NS '.oppont»im TK.POD TC TRIPOD TRIPOD TRIPOD TIME AND POLAR MOTION DATA ^r rfctrse TIMLI3: wwv,)>.:{.r»r.'un -o TIN>E lutn- Bn CIRC. S TQ SIGNAL- 0^200 NO. )98 [ SO RCI n' Pj.AB COOROINA'CV BIH CIRC. NO. D98. * * " N * - APPLIED INSTRUMENT CONSTANTS MORNIBü* DESCRIPTION IAN.IN'^ I E ^LL VffclICA, -tl (LO*fNl CIRCLE LEVEL rm'- CROSS P^ c 'R lo< IM ' S VIAL NO 50 749 VALUE.42.22,0397 DATE f'ar 74 MAR 74 FEB 74 SKETCH OF GEODETIC CONNECTION AT*9 N \»$'»t US J s rt z s E r ETIC N 3 0 LAI Tt.OE 0' 42 "6 7 0EU3ETIC LONGITUDE DfPLlvTION DATA DATUM OR DER st GtODl I POSITION (f ; W 4 27 ' 55."85 927 NAD DHATC Ot>..ECT nn IN MERIOAN ^. 3.56 OIPPERENCE IN LONGITUDE (». - ^,, +4.37 P^l'-IE.'BTICA DEPLECTION (A X I COS * +3.66 LAPLACE CORRtCTlON (A, - X. SIN #r 38 ' 'LAr f «7IML'H («308 03' 09."58 * LAPLACE CORK IN LATIT JOCS \ A LaMOITuOES ^OUTIVI ÜMP'LEt" DSP FEB 75 CHECKED Bv; DATE CSH FEB 75 A-6 4 REVISED u. DSP J'JN 7 5

L. - u u,! Ü \> -T YPG r ACTDAkl/VUr LocnoN ARIZONA BBCIII TC n AZII. L'TM MARK STATION I I PGT 2 AMS 960 BENCH MARK IHCfcT.S 934 IELCMTIOH 265.20B l»ou«c rmatc CLfVAloM 89>04m «OU"CtnsrftRf. lt IV*.*;. Al. 'TtO 4 GROUPS 3 SETS 5 POSITIONS.S5 ss -»T, _, N s RE rnro 0 GROUPS 0 SETS 2 POSITIONS j IvE'- f«' F '(.«MIMAT ICH STERNECK MERIDIAN TRANSIT DIRECTION J.baf I» R. COURBIS R. COURBIS C. TAYLOR I nt JAS ; N DIIATC DMATC DMATC ns- H.' T-4 86967 T-4 86967 T-3 5289. j crtr.>0 -.«'- ft«latametrics 227 FATAMETRICS 227 2E-99..'t, ^.H»! '«vt U.LOCAl» DEC 74 9 DEC 74 3 JAN 75 If.»A», *..*. ÄHC.L DATE 0.07 DEC 74 0.2 DEC 74.24 FEB 75 j { 'I* ANO OR'-AN.tATlQN rsn MIATC CSH DMATC DSP DMATC j ItH ) A <«:> -,«t AN7«TCS USP DMATC DSP DMATC CSH DMATC c»- «jtfo j DATE CHECKED DEC 74 DEC 74 DEC 74 DEC 7 FEB 75 I MAR 75 j Mtl Aj»*0^' t«. TKlPOO. CTCl THIPOD TRIPOD TRIPOD LATITUOe LONGITUDE AZIMUTH/«r-, g^] j 0» tl 0 tl O f M *'. oastftvcd.'alue 206 53 49.4 I? ' uh Tj SEA LEVEL S " m 0.02»FO T,[ h To POLC c 0.26 IE 0.05 + 0.0 u» '<*L ABtRRAT ION + 0.32 I cccc«tmc «EOUC'UM 0,00 0.00 0.00 I»ST«-NC-M C»f S' L' N 32 48 38.32 W 4 22 4.2 206 53 49.82 IS D -* *'"> Rf:.. * JNIT.0,.2.2,t.22.26..00 j TIME ANC POLAR MOTION DATA SKETCH OP GEODETIC CONNECTION!,; ' r: ' ',Mt,,: lac L> -URRII-T,^ TO MME.oT, wwv- um CIRC. NO. D99 -RF : ICNIC. 'o SIC;NA L -O.L'.Tö.At. CUORO.NAT.S Bn CIRC. NO. D99 OF..»«TLArs APPLIKD NO ECCENTRICITY j INSTRUMENT CONSTANTS I DescBpT<oN VIAL NO VALUE DATE H»'B.A LRVCL t ü*pcm 5<).42 NUI! 74 - *. t (lowekl M»..(NO I FVFl 79.22 MAR 74 yutkal. I..RCLE.EVEL «Ilk TH CROSS LEVEL I (R 200 'M *'.0397 FEB 74 DIPLfCTION DATA { 0 MC LA' l»^dt or or TIC LONGITUDE DATUM OR DER GEODETIC POSITION BV; IN :<2 0 O *»«' 39"53 Wll 22 35.60 927 NAD st DMATC Otr I.!! 0«IM MIHIPAN (*# - ^, -.2 OIFFERENCE IN LONGITUDE (X, - X&l + 5.5. P'l-.-f VERTICAL OEFllCTION (X. ^ A ) COS +4.64 LAPLACE CORRECTION (A, - Xr,) SIN ^ +2.99 PL.cFAnv.c^ 206 53' 52W «-,-<»* LAPLACE COAR N LATITUDES a W LONGITUDES POSITIVE «Wll ED HV loatf cmckto wtf OAtE REVISED BV; D6P FEB 70 CSH A-65 FKB 75 DSP DATE.TUN 75 I

PROJECT YPG - A^Tonunur prct«location AltfZO^A A IMUTH MARK S T ATlON PGT 3 AMS 960 HILLTOP USCW 3S 949 lelevanon 549.60n SOURCE DMATC E^VAT.DN 3 4. 97n { omct mktc LATITUDE LONGITUDE AZIMUTH/«r., *»" \ O II 0» am MEAN OBSERVED VALUE 94 37 35.52 REDUCTION TO SEA uevel S 0.05 0.02 I REDUCTION TO POLE S 0.26 E 0.05 + 0.3 lounnal ABERRATION + 0.32 ECCtNTRIC HEHIJCTION 0.00 ( 0.00 0.00 IASIHOSOMIC RESULTS N 33 06 3.48 W 4 8 02.80 94 3? 35.95 STO DEVIATlnN. RESU-T UNIT.4..29..*-.9 t.2.t 2.47 OdSERVATONS ACCtwTEj 4 GROUPS 3 SETS 6 PDSITIONS I ubsf.rvatlons REJECTED 0 GROUPS 0 SETS 0 POSITIONS METHOD OF 0ETERMNAT ON STERNECK MERIDIAN TRANSIT DIRECTION.ISEKVEP R. COURBIS R. COURBIS H. WOOEWORTH ^janlzatlqn DMATC I DMATC LwvlATC I I INS'W'jVENT T-4 86967 T-4 86967 T-3 5289 CHRONOMETER DATAMETRICS 227 DATAMETRICS 227 2E-99 DATtb jhserved ILOCAL 6 DEC 74 6 DEC 74 0 FEB 75 j { '.'CAN GHCENrtlCH CIV'L DATt. 7.08 DEC 74 7.3 DEC 74.2 FEB 75 j \c MpuTEH AND ORLANZA*ION DSP DMATC DSP DMATC DSP DMATC I CNtCRER AND CRGANIZATON CSH DMATC CSH DMATC CSH DMATC DATE COMP.'CD IDATE CHECKED DEC 74! DEC 74 DEC 74 DEC 74 FEB 75 MAR 75 I INST SUPPORT (PIER TRIPOD E'C TRIPOD TRIPOD TRIPOD TIME AND POLAR MOTION DATA SKETCH OF GEOOETIC CO* INECTION SOURCE or PRECISE 'IMEIl: wwv NO ECCENTRICITY SOURCE OF CORRECTION '0 TIME (uti): BIH CIRC. NO. D99 jut CCRRECT ON(Sl TO SIOKAL: -0?227 SOüRf E OF f JLAR COOR:MN, TES: BIH CIRC. NO. D99 P"OPAGATjOK CELAV; APPLIED INSTRUMENT CONSTANTS DESCRIPTION VIAL NO. VALUE DATE [ HORREBOW I EVEL MJPPERI 50.42 ' MAR 74 HORHEBOW LlVEL ILOWEB HANT ING LEVEL 749.22 MAK 74 VERTICAL CIRCLE LEVEL AZIMUTH CRnSO LEVc. «200) 'M 5.0397 FEB 74. r H j DEFLECTION DATA EOP ET C ATIT'JDE OEOOETK LONGITUDE 0 f " bl 33 0 06 ' 5.38 wll 7 56.62 927 NAD st DMATC DEFLrCT ON IN MERIDAN (0- - ^, ) DIFFERENCE IN LONGITUDE (A4 - -.90 Xol +6.8 RIME VERTICAL DEFLECTION (X, - X ) COS «APLACE CORRECTION (A. X,, + 5.8 SIN,, +3.38 DATUM 0 R DERl GE OETIC POSITION BY; LAPLACE AZIM TH (O J 94 0 37' 39."33 o «u; l.aplace COR* IN LATIT UDES a W LONGITUDES POSITIVE COMPILED BY: DSP DATE FEB 75 CHECKED BY; CSH A-66 DATE FEB 75 REVISE" a-: DSP DATE JÜN 75

PWJCCT Ypc - ACTDAUAUr DBCII TC "I LOCAT.ON ARIZONA AZIMUTH MA <K STATION PGT 2 AMS 60 MPS 25 DMATC 74 ELEVATION 265.20n»ou«ce DMATC L«V*TION 70#06m [»Odd«vunTC LATITUDE LONGITUDE AZIMUTH/lr-, jggm 0 M MEAN OBSERVED VALUE 247 3 49.44 REDUCTIUN TQ StA LEVEL S 0.03 0.0 R' UCTION TO PCE S 0.26 E 0.05 + 0.09 DIURNAL ABERNArON + 0.32 ECCENTRIC REDUCTION 0.00 0.00 0.00 ASTR )NOMIC RESULTS N 32 54 04.40 W 4 22 59.50 247 3 49.84 S.D JEVIATos RESULT UNIT.5..30 +.2 #±.20.35,+.40 OSSERVATQNS ACCEPTED 4 GROUPS 3 SETS 6 POSITIONS OBSERVATIONS PEjECTCD 0 GROUPS 0 SETS 0 POSITIONS METHOD O e OE'tfMINATlON STERNECK MERIDIAN TRANSIT DIRECTION OBSERVER R. COURBIS R. COURBIS C. TAYLOR ORGANISATION DMATC DMATC DMATC INSTRUMEN T-4 86967 T-4 86967 T-3 5289 CHRONOMETER EATAMETRICS 227 DATAMETRICS 227 2E-99 OATES OBSIRVED ILOCAL) 2 DEC 74 2 DEC 74 24 JAN 75 MEAN GREENWICH CIVIL DATE 3.07 DEC 74 3.2 DEC 74 25.4 JAN 75 COMPU'ER AND ORGANIZATION DSP DMATC DSP DMATC DSP DMATC CHE< KER AND ORGANIZATION CSH DMATC CSH DMATC CSH DMATC 0«Tt COMPUTED DATE CHECKED DEC 74 DEC 74 DEC 74 DLC 74 FEB 75 MAR 75 N r,r SUPPORT IPIER TRIPOD, ETCI FRIPOD TRIPOD TRIPOD TIME AND POLAR MOTION DATA SKETCH OP GEODETIC CO» «NECTION ;Ou*<CE or PRECISE TIME(S); WWV OURCI CE.(ERECTION TO TIME (UT ): BIH CIRC. NO. D99 JT COMMCTIONISI To SIHNALt -0^25 IOUMCI OF FüLAP COORDINATES: BIH CIRC. NO. D99 PK.H,,-,*. ON PFLAI: APPLIED NO ECCENTRICITY INSTRUMENT CONSTANTS DESCRIPTION VIAL NO. VALUE DATE HOPRFBOW LEVEL (UPPER) 50.42 MAR 74 HCRPEBOW LEVEL (LOWER) HANOINO LEVEL 749.22 MAR 74 VERTICAL CIRCLE LEVEL AZIMUTH CROSS LEVEL 'R ICO) (M + S).0397. FEB 74 DMLECTION DATA 3 E 00 tre LATITUDE CEODETIC LONGITUDE N 3? 34' 03!'66 W 4 22 ' 54.42 927 NAD st vmr re DEFLECTION IN MERIDAN (#, - 4r) +Ö.74 DIFFERENCE IN LONGITUDE fa, -- Ae» +5.08 PRIME VERTICAL DEFLECTION (Jk, - X0) COS 4 +4.27 LAPLACE CORRECTION (A, - Xa ) SIN o +2.76 LAPLACE AZIMUTH (»^ 247 COMPILED BY; DATE lsp FEB 75 0 DATUM ORDER GEODETIC PO SITION BY; 3* 52."60 (»0-aJ LAPLACE CORR N LATIT UOES ft W LONGITUDES POSITIVE CHICKED BY.' DATE REVISED BY- DATE CSH A-67 FEB 75 DSP JUN 75

PROJCCT YPG r "" ACTDnunur PE«III T«LOCATION ARIZONA AZIMUTH MARK STATION I I PGT 3 AMS 960 IR 22 DMATC 974 ELEVATION 549.60 m»oorce DMATC ELEVAT.ON 328.5!,.OURCE jape LATITUDE LONGITUDE lazimuthllr««. 22) ' 0/» 0 H O l H MEAN OBSERVED VALUE 230 4 56.84 HEOuCTON TO SEA LEVEL IS 0.05 - O.OA RcO.;CTlON TO POLE S 0.26 E 0.05 W 0.2 DlllHNAL ABERRATION W 0.32 ler.rfntrlc REDUCTION 0.00 0.00 0.00 I A.TRONOMIC RESULTS N 33 02 24.5 W 4 32 47.0 230 4 57.24 -..TD DEVIATION, RESULT UNIT t.3..27 It.2,t.20 ±.38.t.53 BSEPVATIONS ACCEPTED 4 GROUPS 3 SETS 6 POSITIONS BSERVATIONS REJECTED 0 GROUPS 0 SETS 0 POSITIONS -ETHOU OF DETERMINATION STEKNECK MERIDIAN TRANSIT blrection 5 BSERVE.-( R. COURBIS R. COURBIS L. WHITE RGANIZATON DMATC DMATC DMATC! INSTRUMENT T-4 86967 T-4 86967 T-3 4307 J CHRONOMETER DATAMETRICS 227 DATAMETRICS 227 2E-830 D'TFb OBSEHVFD.OCAL' 2 DEC 74 2 DEC 74 6 FEB 75 } AN GREENWICH CIVIL DA'E 3.08 DEC 74 3.4 DEC 74 7.08 FEB 75! MPUTER AND ORbANIZATIOS CSH DMATC CSH DMATC DSP OMATr DSP DMATC DSP DMATC CSH DMATC DEC 74 I DEC 74 DEC 74 DEC 74 MAR 75 MAR 75 INST SUPPORT (PIER TRIPOD ETCI TRIPOD TRIPOD TRIPOD TIME AND POLAR MOTION DATA SKETCH OP GEODETIC CO» 4NECTION SOURCE Of PUFCISS TIME(S): WWV. SCURCE OF CORRFCIION ro MME IJTI,: BIHCIRC. NO. D99 UTI r,of>rection(s TO SIGNA^' 0?24Ä s urt > POLAR coornnatfs: BIH CIRC. NO. D9q UHO^AOATION BtLAY: APPI.JEI) NO ECCENTRICITY INSTRUMENT CONSTANTS? DESCRIPTION VIAL NO. VALUE DATE hc' r 'REBOW FVEL fupperl 50.42 MAR 74 HORRfSOW -EVEL ILOWERl MAN' - NG LF^C I_ 749.22 MAR 74 VERTUAL CIRCLC LfVEl AZU/UTH '.'.RGSS LEVEU R OOl <M > S).0397 lleb 74 DEFLECTION DATA r. F o n t TIC «T ITUDE GEorETIC LONGITUDE IN 33 02' 28". 77 W 4 32 ' 43''74 927 NAD Ist DMATC DEFLFCTION IN MFRIDAN (0. - 0O) DIFFERENCE IN LONGITUDE (Xa - -4.26 - Aol +3.36 PRIME VERTI.AL DEFLECTION (A - X) COS * LAPLACE CORRECTI N (A, - A, SIN «o +.83 DATUM 0 R OERj GEODETIC POSITION BY; * "-' +2.82 [ LAPLACF AZIMUTH (O,^ 230 4 ' 59.'Q7 0,^-0+LAPLACE COR" N LATIT UDFS ft W LONGITUDES POSITIVE COMPllKO H^ ; DSP DATE FEB 75 CHECKED IV' CSH A-68 DATE FEB 75 REVISED BY; DSP DATE JUN 75

«-..»..».-.. ü! matter YPG - ACTDnunur RPCIII T«"H "-OCATION ARIZONA ' AZIMUTH MARK STATION SITE 8 DISC YPG. DMATC 974 IR 23 DMATC 74 j ELEVATION 229.6 m S0URCE DMATC ELEVATION 279,04 m S0U " CE DMATC LATITUDE LONGITUDE lazimuth/jr.»u ^ _ 0 M 0 w MEAN OBSERVED VALUE 359 52 2.56 REDUCTION TO SEA LEVEL s 0.04 0.00 REDUCTION TO POLE s 0.26 E 0.05 + 0.0 lournal ABERRATION + 0.32 (.CCENTRlC REDUCTION 0.00 0.00 0.00 j j ASTRONOMIC RESULTS N 33 07 08.72 kf 4 2 28.8 359 52 2.98 D DEVIATION. RESULT UNIT.3..25.8..32.25..00 > OB&FRVATONS ACCEPTED 4 GROUPS 3 SETS 6 POSITIONS OBSERVATIONS REJECTED 0 GROUPS n SETS 0 POSITIONS j M'-THOD OF DETERMINATION STERNECK MERTnTAN TRANSTT ntrf.ctton OBSERVER J. AUSTIN J. AUSTIN C. TAY.nR ORGANIZATION DMATC DMATC nmatc INSTRUMENT T-4 86967 T-4 ftftq67 T-^ 528q C RONOMETER DATAMETRICS 227 DATAMETRICS 227 2F.-q9 j D TES OBSERVED (LOCAL -j nun 7A n DEC 74 FRR 7S Wt AN GREENWICH CIVIL DATE 4.0ft nf.r. 74 4.2 nf.r 74 2.0Q FPU 75 COMPUTER AND ORGANIZATION CSH DMATC CSH TlMATr. nsp nmatr DSP DMATC DSP DMATC CSH DMATC DATE COMPUTED DAF CHECKED DEC 74 DEC 74 DEC 74 nf.r. 74 MAR 75 MAR 75 INST SUPPORT (PIER TRIPOD ETC) TRIPOD TRPnn TRTPfm I TIME AND POLAR MOTION DATA SKETCH OF GEODETIC CONNECTION ISJURCE OF PRECISE TIMEfS): WWV SOURCE OF CORRECTION TQ TIME (UTI): R-fH CTRr KO OQQ UTI CORRECTIONISl TQ SIGNAL: -flf^af SOURCE OF POLAR COORDINATES: Rl H r.trr. NO. nqq PBOBAGATION OELAT: APM TFD J INSTRUMENT CONSTANTS I DESCRIPTION ' VIAL NO. VALUE DATE MOBREBOW LEVEL (UPPERl 50.42 MAR 74 HOPHEBOW LEVEL (LOWERl HANGINO LEVEL 7A9.22 MAR 74 VERTICAL CIRCLE LEVEL.WIMUTH CROSS LEVEL (R 200) (M S).0397 FEB 74 NO ECCENTRICITY DEFLECTION DATA { GEODETIC LATITUDE I GEO DETIC LONGITUD E N 33P 07' 2'.' 54 W ^ 2' 20."52 DATUM 927 NAD I I \ f OR DERl GEODETIC POSITION BY st DMATC DEFLECTION IN MERIDAN (^A - 4rj) j -3.82 DIFFERENC: IN LONGITUDE (AA _ Xo» +8.29 PRIME VERTICAL DEFLECTION (A. - X0) COS 0 J +6.94 LAPLACE CORRECTION (A. - KJ SIN #0 +4.53 LAPLACE AZIMUTH (" u^ 359 52' 7."5 I ar,-(»+ LAPLACE COUP N LATITUDES ft W LONGITUDES POSITIVE COMPILED BY; DATE CHECKED BY:' DATE REVISED BY: JDATE f DSP FEB 75 CSH FEB 75 DSP JUN,j A-69 j

PSOJtCT LOCATION YKT ARIZONA ASTRONOMIC RESULTS A-IMUTH MARK SITE 2 DISC YPG^ DMATC 97 ELFV^TION IQT.SOm Qjouäc DMATC LATITUDE STATION IR 24, DMATC 74 tlevatow 20.35"»ox«" DMATC LONGITUDE AZIMUTH Mt AN oeserveo VALUE RtO.CUOtt TO SEA LEVEL «F.'uCTIQN To POLE OlurNAL ABERRATION EC' (N I RlC REDUCTION 0.03 0.27 0.00 J 2_ 0.05 W 0.2 JL. 26 37 23.20 0.0 0.0 0.32 0.00. ) ASTRONOMIC RESULT! S.O DEVIATION. RESULT, UNIT N 32 57 47.68 W 4 2 34.88.3 -.26.3.23 26.27 37 23.62.*.06 OOJ: RVAT:ON : ACCEPTED OBS- R/ATlON? REJFCTED ML'. or OF DE'LRMIMAT ION OBSI OVF.R ORCAN'ZATITN IMBTRUMCN CHRC METtfl DATE'- OPS! ^V 3 (LOCAL) MFAS GREENWICH CIVIL DATE LOMP'./'F.H AxO ORC "NIZATION ER ANC ORGA-. NATION Tt. COMPt'ED DATE CHECKED..sr SUPPORT IPIER, TRIPOD, ETCI GROUPS 0 GROUPS STERNECK R. OOURBIS DMATC T-4 86967 DATAMETRICS 227 4 DEC 74 5.06 DEC 74 DSP DMATC CSH DMATC DEC 74 DEC 74 TRIP3D 3 SETS,0 SETS MERIDIAN TRANSIT K. OOURBIS DMATC -4 86967 DATAMETRICS 227 4 DEC 74 5.2 DEC 74 DSP DMATC CSH DMATC DEC 74 DEC 74 TRIPOD 5 POSITIONS PPSITIQN DIRECTIQN K. ZELLERS OUATC T-3 307 2E-l830 3 JAN 7ß-.07 FEB 75 DSP DMATC CSH DMATC MAR 75 MAR 75 TRIPQD. TIME AND POLAR MOTION DATA FCIbE TIMEfS): WWV.RBFCTIQN TO TIME (uti): BIH :IRCj ffq pqg - JNRFCT IONISI TO SIGNAL; SoURf.E OF POLAR COORDINATES: DESCRIPTION H RFIfBOW LEVEL (UPPER) HORRt DOW LEVEL (LOWER) HANC.ING t EVEL VERTICAL CIRCLE LF-VEL INSTRUMENT CONSTANTS VIAL NO. 50 749 -Of29 BIH CIRC. NO. D99 APPLIED VALUE.42.22 DATE MAR 74 MAR 74 SKETCH OF GEODETIC CONNECTION /V T*0 J*2V»79'3S'Z$'S II A2IMIJTM CROSS LEVEL (R' ^0) (M ( S.0397 feb 7 GEODETIC LATITUDE GEODETIC LONGITUDE N 32 57 ' 50.^6 W 4 2 24.79 DEFLLCION IN I.ERIOAN (* w -2.78 PRIME VERTICAL DEFLECTION (A, lj_ COS * ft.47 L/PLACE AZIMUTH (" 26 37 2).»«a U- C MPILED GY; DATE DSP DEC 74 CHECKED BY: CSH DEFLECTION DATA A-70 DATUM 927 NAD ORDER GEODETIC POSITION BY: st DIFFERENCE IN LONGITUDE fa, - Aol DMATC LAPLACE CORRECTION «A, - A0) 5IN»c -0.09 + 5.49»0»a+LAFLACt COW» N LATITUDES ft W LONGITUDES POSITIVE OATt DEC 74 REVISED BY; asp DATE JUN 75

D U DESCRIPTION OF BENCH MARKS Level Lne "A" - Yuma County, Arzona. 3+72.08 AHD 957 - Located In the southeast corner of the ntersecton o~u.s. Hghway 95 and the man entrance road (Laguna Road) to the U.S. Army Yuma Provng Ground. The mark s an Arzona Hghway Department (AHD) dsk set n the top of a concrete mass that s flush wth the surface of the ground. It s stamped: "3+72.08 957 304.09". It s located 00 feet east of the centerllne of hghway 95, 5.0 feet east of telephone pole No. W-M B-l 458 and 2.0 feet southeast of an AHD R/W post. 30+6.77 AHD 957-0.35 mle north on U.S. Hghway 95 from the Tnter sec toutof "hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground. The mark s an Arzona Hghway Department (AHD) dsk stamped: "30-6.77 957" and set n the top of a round concrete post, 2-nches n dameter that projects 0.3 foot above ground. It s located 00 feet west of the centerllne of the hghway, 7.5 feet south of telephone pole No. W-M B-l 337 and 2.0 feet south of an AHD R/W post. 44+45.07 AHD 957-0.6 mle north on U.S. Hghway 95 from the ntersecton of hghway - 95 and the man entrance road to the U.S. Army Yuma Provng Ground. The mark s an Arzona Hghway Department (AHD) dsk stamped: "44-45.07 957 32.73" and set n the top of a round concrete post, 2-lnches n dameter that projects 0.2 foot above ground. Jt s located 00 feet east of the centerllne of hghway 95 and.9 feet south of an AHD R/W post. 60+00.00 AHD 957-0.9 mle north on U.S. Hghway 95 from the ntersecton "of'hgh way ~9 5 and the man entrance road to the U.S. Army Yuma Provng Ground. The mark s an Arzona Hghway Department (AHD) dsk stamped: "60+00.00 957 336,88" and set n the top of a concrete post 2-nches In dameter that s flush wth the ground. It s located 00 feet east of the centerllne of hghway 95 and 2.3 feet south of an AHD R/W post. A-7

- ).! 75+00.OAHD957 -.2 mles north on U.S. Hghway 95 from the nterm ectton~of~hl^hway 95 and the man entrance road (Laguna Road) to the U.S. Army Yuma Provng Ground. The mark s an Arzona Hghway Department (AHD) dsk stamped: "75+00.0 957 339.69" and set n the top of a round concrete post, 2-nches n dameter that projects 0. foot above ground. It s located 00 feet east of the centerlne of hghway 95 and 2.0 feet south of an AHD R/W post..! J 90+00 AHD 957 -.5 mles north on U.S. Hghway 95 from the ntersecton of hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground. The mark s an Arzona Hghway Department (AHD) dsk stamped: "90+00 957 35.29" and set n the top of a round concrete post, 2-nche8 n dameter that projects 0.3 foot above ground. It s located 00 feet east of the centerlne of hghway 95 and 2.0 feet south of an AHD R/W post. 00UNTY WELL AZIMUTH MARK -.7 mles north on U.S. Hghway 95 from the Intersecton of hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground. The mark s a standard USC&GS azmuth dsk stamped: "COUNTY WELL 949" and set n the top of a concrete post, 2-lnches square that projects 0.3 foot above ground. It s located 70 feet west of the centerlne of hghway 95 and 9.0 feet east of a power pole. 235+00.0 AHD 957-2.4 mles north on U.S. Hghway 95 from the ntersecton of hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground. The mark s an Arzona Hghway Department (AHD) dsk stamped: "235+00.00 957" and set n the top of a round concrete post, 2-nches n dameter that projects 0,2 foot above ground. It s located 00 feet west of the centerlne of hghway 95 and.8 feet south of an AHD R/W post. COUNTY WELL 2-2.7 mles north on U.S. Hghway 95 from the ntersecton of hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground. The mark s a standard USC&GS trangulaton staton dsk stamped: "COUNTY WELL 2 957" and set n the top of a concrete post, 5-nches square that projects 0.2 foot above ground. It s located on the top of a small rdge above 500 feet north-northeast of the juncton of hghway 95 and the Martnez Lake Road. Also, t s 66 feet east of the centerlne of hghway 95 and about 80 feet south of a large wash. A-72

D L 282+75.29 AHD 957-3.3 mles north on U.S. Hghway 95 from the ntersecton of hghway 95 and the man entrance road (Laguna Road) to the U.S. Army Yuma Provng Ground. The mark s an Arzona Hghway Department (AHD) dsk stamped: "282+75.29 388.52" and sot n the top of a round concrete post, 6-nches n dameter that projects 0.3 foot above ground. It s located 00 feet east of the centerlnc of hghway 95, 30 feet south of the centerlne of Aberdeen Road and 4.3 feet north of an AHD R/W post. BM A - 3.6 mles north on U.S. Hghway 95 from the ntersecton of hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground. The mark s a Defense Mappng Agency dsk stamped: "BM A 974 T0P0 CENTER" and set n the top of a round concrete post, 2-nches n dameter that projects 0.3 foot above ground. It s located 87 feet west of the centerlne o hghway 95 and 2.«feet west of a metal wtness post. 380+00 AHD - 5.3 mles north on U.S. Hghway 95 from the Intersecton of~htghwäy~95 and the man entrance road to the U.S. Army Yuma Provng Ground. The mark s an Arzona Hghway Department (AHD) dsk stamped: "380+00 475.35" nnd set n the top of a round concrete post, 6-nches n damet'r that projects 0.7 foot above ground. It s located 00 feet west of the centerlne of hghway 95 and 2.7 feet south of an AHD R/W dsk. 460+00 AHD - 6.8 mles north on U.S. Hghway 95 from the ntersecton of hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground. The mark s an Arzona Hghway Department (AHD) dsk stamped: "460+00 544.27" and set n the top of a round concrete post. 6-nchos n dameter that projects 0.7 foot above the ground. It s located 00 feet west of the centerlne of hghwav 95. 375 feet north of a hgh pressure gas lne juncton pont and J.6 feet south of an AHD R'W post, BM 3A - 7.6 mles north on U.S. Hghway 95 from the ntersecton of hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground. The mark s a Defense Mappng Agency dsk stamped: "BM 3A 974 T0P0 CENTER" and set n a round concrete post, 2-ncheP n dameter that projects 0.2 foot above ground. It s located 04 feet east of the centerlne of hghway 95. 5. feet south of an AHD R/W post and 3.5 feet west of a wtness post. A-73

» *-. 628+24.93 AHD - 9.4 mles north on U.S. Hghway 95 from the ntersecton of hghway 95 and the man «."trance road (Laguna Road) to the U.S. Army Yuma Provng Ground. The mark s an Arzona Hghway Department (AHD) dsk stamped: "62S+24.93 678.62" and set n the top of a round concrete post, 6-lnches n dameter that projects 0.3 foot above ground. It s located 00 feet west of the centerlne of hghway 95 and about 37 feet east of the centerlne of a dran. BM 4A - 0.4 mles north on U.S. Hghway 95 from the ntersecton of hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground. The mark s a Defense Mappng Agency dsk stamped: "BM 4A 974 T0P0 CENTER" and set n the top of a round concrete post, 2-nches dameter that projects 0.2 foot above the ground. It s located about 250 feet north of the apex formed by the juncton of hghway 95 and Castle Dome Road to the East. Also, t s 56 feet cast of the centerlne of hghway 95, 57 feet northwest of the centerlne of Castle Dome Road and.0 feet north of a metal wtness post. ) TOM 235 -.6 mles north on U.S. Hghway 95 from the ntersecton of hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground. The mark s a chseled square on the southeast corner of a 3-foot X 6-foot concrete slab. It s 06 feet west of the centerlne of hghway 95 ap'l. feet southwest of the northwest corner of a shelter n the rest area. BM 5A - IL.H mles north on U.S. Hghway 95 from the ntersecton of hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground. The mark s a Defens Mappng Agency dsk stamped: "BM 5A 974 TOPO CENTER" and set n the top of a round concrete post. 2-nches n dameter that projects 0.3 foot above ground. It s located 32 feet south-southwest of the ntersectng centerlnes of U.S. Hghway 95 and a road to the east, 84 feet west of the centerlne of hghway 95 and 2.9 feet west of a wtness post. 839 USCE 968-4.6 mles north on U.S. Hghway 95 from the ntersecton of hghway 05 and the mn entrance road to the U.S. Army Yuma Provng Ground. The mark s a Corps of Engneers. Los Angeles Dstrct Cap stamped: "893 96^' and rveted to the top of a stnel Re-Bar that projects 0.5 feet above ground. It s located about J00 feet east of the hghway. 250 feet east of power lne pole, 59 leet west of a drt road and 5 feet west of a metal wtness post. A-7 A

u u. TR -^-JSL^m " From the lntt ' rsect on of U.S. Hghway 95 and the man entrance road (Lapuna Road) t«. the U.S. Army Yuma Provng Ground, go north on hghway 93 for 4,6 m IPS? to a power lne crossng and ro^d to the north; thence north on power lne road for 0.9 mle to the mark on the rght, t s a standard USr.S dsk stamped: "TR?H H77 934" and set n the top of a concete post, s-nches square that protects 0.5 foot above ground. It.s located 4.0 feet east of the centerlne of road. 7.0 feet southwest of power lne pole and 5.0 feet north of a w tness post. TBM 275 - From the ntersecton of U.S. Hghway 93 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 4.6 mles to a power lne crossng and road to the north; thence north on power lne road for.0 mle to a dm road fork; thence left on dm track and contnue north for '».:< mle to mark on the rght. The mark s chseled square n the top of a large boulder that projects 0.; toot above ground. It s located 3 feet east of the centerlne of a track road^ 4 feet west of the centerlne of a drt road and 2.3 feet east of a wtness post. TR 27 USGS 93 4 - From the ntersecton of U.S. Hghwav 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.6 mles to mle post 62 and a road to the rght; thence turn rght and go east for 0.25 mle to a crossroad; thence turn rght and go south for 0.2 mle to the mark on the left. The mark s a standard USGS BM dsk stamped: "TR «7 92 934" and set n the top of a concrete post. S-nches square that projects 0.3 foot above ground. It s located 65 feet east of road and 3.3 feet east of a wtness post, TBM 288 - From the ntersecton of U.S. Hghway 95 and the man entrance road the the U.S. Army Vuma Provng Ground, go north on Hghway 95 for 9. mles to the mark on tn rght. The mark s a chseled square on the top. at the east end of a steel culvert. It.s 38.H feet east of the centerlne of hghway 95. TBM 08 USGS 934 - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Armv Yuma Provng Ground, go north on hghway 95 for 20.4 mles to the mark on the west sde of road on the top of a cut. The mark s a chseled square on the northeast end of a large flat rock. It s loca'od 40 feet west of the centerlne of hghway 95, 240 feet southwest of the Intersectng centerlnes of the hghway and a -oad to the west-northwest and 38. feet southeast of an AHD R/W wtness post. A-75

HILLTOP USCtCS 949 - From the Intersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 20.4 mles to a road ntersectng from the west; thence left, west and north for 0.9 mle to a crossroad; thence left and go west for 0.2 mle to a track road to the left; thence left upgrade to the top of a small hll and the staton at the west end of a cleared area. The mark s a standard USC&GS tnangulaton staton dsk stamped: "HILLTOP 99" and cemented n a drll hole 'n a large flat boulder. HILLTOP_REFERENCE MARK.NO^ - Located 7.90 meters (25.95 feet) northnortheast of Trangufaton Staton HILLTOP. It s a standard USCfcGS reference mark stamped: "HILLTOP NO. 949" and cemented n a drll hole n a boulder. HILLTOP REFERENCE MARK_N0. 2 - Located.645 meters (38.2 feet) northwest o~trangularon~statrön HILLTOP. It s a standard USC&GS reference mark stamped: "HILLTOP NO. 2 949" and cemented n a drll hole n a boulder. TH_25 USGS 934 - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 20.4 mles to road ntersectng from the west; thence left gong west and north for 0.5 mle to a crossroad; thence contnue straght ahead gong north for 0.65 mle to the mark on the left. The mark s a standard USGS BM dsk stamped: "TR 25 980 9:{4" and sot n the top of a concrete post, 8-nches square that projects 0,4 foot above ground. It s located 87 feet west of the centerlne of road and 4.9 feet southwest of a 4" X l" wooden wtness post. TBM M)\ - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 20.4 mles to ntersecton wth road from the west; thence left gong west and north for 0.5 mle to a crossroad; thence to straght ahead, contnung north for.2 mles to the mark on the left sde of the road. The mark s a chseled square n the top of a large boulder that projects 0. foot above ground. It s located 45 feet west of the centerlne of north-south road, 25 feet south of the centerlne of a dm track road to the west and 2.3 feet west of a wtness post. A-7b

:. BM oa - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 20.4 mles to a road ntersectng from the west; thence left, gong west and north for 0.5 mles to a crossroad; thence straght ahead, contnung north for.2 mles to a dm track road to the left; thence left, gong west on track road for.2 mles to the mark on the rght. The mark s- a Defense Mappng Agency dsk stamped: "BM 6A 974 TOPO CENTER" and set n the top of a round concrete post, 2-nches n dameter that projects 0.3 foot abovt ground. It s located 30 fett north on the track road and 4.0 ft"t east of a metal fence post. IR 23 - From the ntersecton of U.S. Hghway 95 ad the man entrance load (Laguna Road) to the U.S. Army Yuma Provng Ground, go north on hghway 93 for 7.4 mles to juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road, gong west and north for 6.5 mles to YPG BM 966 on the rght and a dm tral road to the left; tlunce left on dm tral and go south-southwest along rdge for 0.8 mle to the mark. The mark s a Defense Mappng Agency dsk stamped: "R 23 974 TOPO CENTER" and set n the top of a round concrete post, 2-nches n dameter that s flush wth the ground. j_r J3 REFERENCE MARK NO. - Located 24.09 meters (79.04 feet) northeast of the staton mark. It s a Defense Mappng Agency dsk stamped: "R.. 23 RM 974 T0P0 CENTER" and set n the top of a concrete post, 2-nches square that s flush wth the ground. j_r 23 REFERENCE MARK NO. 2 - Located 9.25 meters (63.6 feet) northwest ol thtt"staton mark. Tt Ts a Defense Mappng Agency dsk stamped: "IR 23 RM 2 974 TOPO CENTER" and set n the top of a concrete post, 2-nches square that s flush wth the ground. SITE 9 DISC - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to Juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road, gong west and north for 6.7 mles to an astro dome and mark. The man s a YPG Survey dsk stamped: "SITE 9 DISC" am cemented n a drll hole at the west corner of a concrete pad whch s southeast of the astro dome. A-77

...*:,., _,. BM 966 - From the ntersecton of U.S. Hghway 95 and the man entnce road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the Juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road, gong west and north for 6.5 mles to the mark on the rght. The mark s a YPG Survey dsk stamped: "BM 966" and set n the top of a concrete post, 5-nches square that projects 0.2 feet above ground. It s located 5 feet north of the centerlne ox the road. TBM 264 - From the ntersecton of U. S. Hghway 95 and the man entrance road to the U.S Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to Juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road, gong west and north for 6.2 mles to the mark on the rght. The mark s a chseled crcle on the apex of a large boulde. It s located 38 feet east of the road, 3 feet east of a rock carn and 2.5 feet west of a wtness post. u TR 40 USGS 934 - From the ntersecton of U.S. Hghway 95 and the man entrance roa<j (Laguna Road) to the U.S Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the Juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road, gong west and north for 4.6 mles to a dm jeep tral on the rght; thence rght on dm tral and go northeast for 0.85 mle to the mark on the rght. The mark s a standard USGS BM dsk stamped: "TR 40 934" and set n the top of a concrete post, 8-nches square that projects 0.5 foot above ground. It s located 73 feet ease of a Jeep tral and 3.5 feet east of a rock carn. BM 7A - From the ntersecton of U.S. Hghway 95 and the man entrance road~to the U.S, Army Yuma Povng Ground, go north on hghway 95 for 7.4 mles to the juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road, gong west and north for 4.2 mles to the nark on the left. The mark s a Defense Mappng Agency dsk stamped: "BM 7A 974 TOPO CENTER" and set n the top of a round concrete post, 2-nches n dameter that projects 0.3 foot above ground. It s located 30 feet west of the centerlne of the road, 4.3 feet west of power pole No. 2206 and 2.4 feet east of a wtness post. Ar.78

- :..- - a a Ü t BM 239 - From the Intersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the Juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road, gong west and north for 3.8 mles to the mark on the rght. The mark s a YPG Survey dsk stamped: 'BM 239 ' and set n the top of a concrete post, 5-nches square that projects 0.3 foot above ground. It s located 25 feet east of the centerlne of the road and 3.0 feet south of a wtness post. TBM 225 DMATC 974 - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the Juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road, gong west and north for 2.9 mles to the mark on the left. The mark s a chseled crcle on the top of a large boulder that projects 0.2 foot above ground. It s located 38 feet west of the centerlne of road, 2.0 feet southeast of a power pole and 2.7 feet west of a wtness post.,... SITE 8 DISC YPG - From the ntersecton of U.S. Hghway 95 and the man entrance~foad to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the Juncton wth Mddle Mtn. Road to the left: thence left on Mddle Mtn. Road, gong west and north for 2.3 mles to a road ntersectng from the east; thence rght, gong east up-grade for 0.5 mle to the top of small hll and an astro dome. The mark s a Yuma Provng Ground Geodetc Control Survey dsk stamped: "SITE 8 DISC" and cemented n a drll hole n the west corner of the northern most concrete pad. DM 8A DMATC 974 - From the ntersecton of U.S. Hghway 95 and the man~entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the Juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road, gong west and north for 0.9 mles to the mark on the left. The mark s a Defense Mappng Agency dsk stamped: "BM 8A 974 TOPO CENTER" and set n the top of a round concrete post, 2-nches n dameter that projects 0.5 foot above ground. It s located 32 feet west of the road, 4.3 feet west of a power pole and 3.0 feet east of a wtness post. A-79

u -II» ^ '. ' -^, ' *- " ^. Jl ) ^. OP MID YPG - From the ntersecton of U.S. Hghway 95 and the man entrance~road (Laguna Road) to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road, gong west and north for 0.6 mles to a track road ntersectng from the east; thence rght on track road, gong rast for 0. to top of small hll and the mark. The mark s a YPG Survey dsk stamped: "OP MID" and set n the center of a shell casng whch s flush wth the ground. It s located 5 feet south-southeast of track road and 4.3 feet north of wtness post. / TBM 89 DMATC 974 - From the Intersecton of U.S. Hghway 95 and the man entrance~road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the Juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road, gong west and north for 9.7 mles to the mark on left. The mark s a chseled crcle on the top of a large boulder that projects 0.2 foot above ground. It s located 34 feet west of the centerlne of road, 75 feet north of the centerlne of a track road, 7.0 feet west of a power pole and 3.2 feet east of a wtness post. ( OP MOUNT YPG - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road, gong west and north for 9,4 mles to a road ntersectng from the west; thence left, gong west uphll for about 0.05 mle to top of small hll and the mark. The mark s a YPG Survey dsk stamped: "OP MOUNT" and set n the center of a shell casng -"hch s flush wth the surface of the ground. It s located 5.3 feet north-northwest of a wtness post. SITE 7 DISC YPG - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn, Road, gong west and north for 8.4 mles to an astro dome on the left and an access road to the west; thence left, west on access road for 0. mle to the astro dome. The mark s a YPG Survey dsk stamped: "SITE 7 DISC" and cemented n a drll hole n the northwest corner of the astro dome's concrete pad. The mark s on the center one of thre»^ concrete pads. A-80

-;-.^,. ' ; - ' ^ -. Q Ü [J :! Ü G LI SITE 7 MON YPG 968 - From the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the Juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road, gong west and north for 8.4 mles to the mark on the left. The mark s a YPG Survey dsk stamped: SITE 7 968 and set n the top of a concrete post, 5-nches square that projects 0.3 foot above ground. The nark s 64 feet west of the centerlne of the road. GEOCEIVER STATION 000 DMATC 974 - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the Juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road, gong west and north for 8.4 mles to the mark on the rght, east sde of the road. The mark s a Defense Mappng Agency dsk stamped: "loolo T0P0 CENTER 974" and set n the top of a round concrete post, 2-nches n dameter that projects 0. foot above ground. It s located on a smll top 5.58 feet north on the north edge of a concrete slab and 6.56 feet northeast of the northwest corner of the slab. BM_68_YPC - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the Juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road, gong west and north for 7.9 mles to the mark on the rght. The mark s a YPG Survey dsk stamped: "DM 68" and set n the top of a concrete post, 5-lnches square that projects 0.5 fool above ground. It s located 26 feet east of the centerlne of road and 2.0 feet south of a wtness post.. BM 9A DMATC 974 - From the Intersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the Juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road, gong west and north for 7.7 mles to the mark on the left. The mark s a Defense Mappng Agency dsk stamped: "BM 9A 974 T0P0 CENTER" and cemented n a drll hole n the southwest corner of the entrance walk to a quonset hut. It s 50 feet west of the centerlne of the road. A-8

') BM 56YPG - From the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the Juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road, gong west and north for 7. mles to mark on the rght. The mark s a YPG Survey dsk stamped: "BM 56l" and set n the top of a concrete post, 5-nches square that projects 0.2 foot above ground. It s located 25 feet east of the centerlne of the road and 4.2 feet south of a wtness post.. ; BM 563 YPG - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Amy Yuma Provng Ground, go north on hghway 95 for 7. ' mles to the Juncton wth Mddle Mtn. Road to the left; thenct left on Mddle Mtn. Road, gong west and north for 6.6 mles to the mark on the rght. The mark s a YPG Survey dsk stamped: "BM 563" and set n the top of a concrete post, 5-nches square that projects 0.3 foot above ground. It s located 25 feet east of the centerlne of the road and 2.8 feet wesl of a wtness post. ' ) BM_20 M USGS 925 - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the Juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road, gong west and north for 5.8 mles to the mark on the rght. The mark s a standard USGS Bench Mark dsk stamped: "20 M 925 570" and rveted to the top of an ron ppe, 2-nches n dameter that projects. feet above ground. It s located 4 feet east of the centerlne of the road, 28 feet north of a tral road and 4.3 feet west of a wtness post. BM 587 YPG - From the Intersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the Juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road, gong west and north for 4.8 mles to the mark on the rght. The mark s a YPG Survey dsk stamped: "BM 587" and set n the top of a concrete prtst, 5-nches square that projects 0.2 foot above ground. It s located 5 feet east of the centerlne of road and 3.4 feet west of a wtness post. A-82

?/ '- «* o n n D IR 24 DMATC 974 - From the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the Juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road, gong west and north for 4. mles to a dm tral rght; turn rght on dm tral and go east for 0, mle to a cone shaped hll and end of truck travel. Pack uphll to the hghest pont and staton ste. The mark s Defense Mappng Agency dsk stamped: "IR 24 T0P0 CENTER 974" set n the top of a round concrete mass, 2.5 feet n dameter that s flush wth the ground. IR 24 REFERENCE MARK NO. - Located 5.08 meters (6.67 feet) southwest of"the staton mark. It s a Defense Mappng Agency dsk stamped: "IR 24 RM T0P0 CENTER 974" and set n the top of a mass of concrete that s flush wth the ground... IR 24 REFERENCE MARK NO. 2 - Located 5.5 meters (8.08 feet) southeast of the staton mark. It s a Defense Mappng Agency dsk stamped: "IR 24 RM 2 T0P0 CENTER 974" and set n the top of a mass of concrete that s flush wth the ground. - - SITE 6 DISC. YPG - From the ntersecton of U.S. Hghway 95 and the mat'entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the juncton wth Mddle Mtn. Road to the left; thence left on MdOle Mtn. Road gong west and north for 3.7 mles to a road ntersectng from the rght; turn rght and go east upgrade for 0.3 mle to the astro dome and mark. The mark s a YPG Survey dsk stamped: "SITE 6 DISC" cemented n a drll hole n the southwest corner of the concrete pad supportng the astro dome. BM 560 YPG - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the Juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road gong west and north for 3.7 mles to the mark on the rght. The mark s a YPG Survey dsk stamped: "BM 560" and set n the top of a concrete post, 5-nches square that projects 0,3 foot above ground. The mark s located 4.0 feet west of a wtness post, 3 feet east of the centerlne of Mddle Mtn. Road and 49 feet north of the centerlne of road leadng to Ste 6. A-83

-''. I: BM 0A DMATC 974 - From the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the Juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road gong west and north for 2.8 mles to the mark on the left. The mark s a Defense Mappng Agency dsk stamped: "BM 0A TOPO CENTER 974" and set n the top of a round concrete post, 2-lnches n dameter that projects 0.4 font above ground. It Is located 52 tret west of the centerllne of Mddle Mtn. Road, and 3.5 feet south of a power pole wth a telephone box.. I SITE 3 DMATC 974 - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the Juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road gong west and north for.6 mles to a road ntersectng from the left; thence left southwest gong upgrade for 0.4 mle to top of hll and mark at the north sde of a concrete pad for an astro dome. The mark s a Defense Mappng Agency dsk set n the top of a concrete post, 2-nches square that Is flush wth the ground. It s located 28.28 feet north of a cuptack set In a lead plug at the center of the concrete pad. (No nformaton on stampng of mark.) TBM 90 - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the Juncton wth Mddle Mtr. Road to the left; thence left on Mddle Mtn. Road, gong west and north for.5 mles to the mark on the left. The mark s a chseled crcle on the top of a large boulder of outcroppng rock that projects about.5 feet. It Is located 60 feet southwest of the centerllne of Mddle Mtn. Road and 209 feet southeast of the centerllne of road leadng to ste 3. Level Lne "B* - Yuma County, Arzona BM 2 USCE 95 - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go west-northwest on Laguna Road for.3 mles to the mark on the left sde of the read. The mark s a Corps of Engneers dsk stamped: "BM 2 95 MSL" and set n the top of a concrete post, 5-lnches square that projects 0.3 foot above ground. It s located 50 feet south of the centerllne of Laguna Road. A-84

B ^....-.,, n -*" o Ü ü MON. LONG. YPG 970 - From the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the U.S. Army Tuma Provng Ground, go west-northwest on Laguna Road for.4 mles to Ocotllo Road ntersectng from the rght; turn rght and go north for 0.5 mle to the mark on the rght. The mark s a YPG Survey dsk stamped: "l MON. LONG. 970" and set n the top of a concrete post, 5-nches square that projects 0.3 foot above ground. It s located 40 feet east of the centerlne of Ocotllo Road and 3.0 feet east of a wtness post. BM IB DMATC 974 - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go westnorthwest on Laguna Road for.4 mles to Ocotllo Road ntersectng from the rght; turn rght and go north on Ocotllo Road for.2 mles to road fork and buldng 2502. The mark s about 50 feet north of the apex of the road fork. It s a Defense Mappng Agency dsk stamped; "BM IB TOP0 CENTER 974" and set n the top of a round concrete post, 2-nches n dameter that projects 0.4 foot above ground. It s located 48 feet north-northwest of the northwest corner of buldng 2502, 62 feet east of the centerlne of Ocotllo Road, 60 feet west of the centerlne of a drt road and 3.8 feet east of a metal wtness post. TBM 00 - From the ntersecton of U.S. Hghway 95 and the man entrance road to U.S. Army Yuma Provng Ground, go west-northwest on Laguna Road for.4 mles to the ntersecton wth Ocotllo Road from the rght; turn rght on Ocotllo Road and go. mles to road fork; take left fork and go northwest for. mles to a "Y" ntersecton; bear left and go west for 0.3 mles to a drt road to the rght and ste of mark. The mark s a crcle chseled on the top of a large boulder that projects 0.5 foot above ground. It s located 49 feet north of the centerlne of paved road, 74 feet west of the centerlne of drt road and 3.0 feet west of a wtness post. SITE DMATC 974 - From the ntersecton of U.S Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go west-northwest on Laguna Road for.4 mles to Ocotllo Road ntersectng from the rght; turn rght and go north on Ocotllo Road for. mles to road fork; take left fork and go northwest for. mles to "Y" ntersecton; bear left and go west for 0.3 mle to a gravel road to the rght; turn rght and go north, upgrade, for.2 mles to a swtch back to the left; turn left and go up a steep grade for 0. mle to the top of hll and ste of an abandoned camera astro dome. The mark s a Defense Mappng Agency dsk stamped; "SITE T0P0 CENTER 974" and cemented n a drll hole n the north corner of the concrete pad. The pad s.4 feet hgher than ground surface. A-85

AIR YPG 969 - From the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the U.S. Army Yuma Provng Ground, go west on Lamna Laguna Road for.4 mles to Ocotlllo Road ntersectng ntersectlner from J the rght; turn rght and go north on Ocotlllo Road for. mles to road fork; take left fork and go northwest for. mles to a "Y" ntersecton; turn rght and go north for 0.3 mles to a concrete pad on the rght and ste of staton. The mark s a YPG Survey dsk stamped; "AIR 969" and cemented n a drll hole at the northeast corner of the concrete pad. It s located 40.5 feet northwest of the northwest corner of buldng S 3002, 25 feet east of the centerlne of paved road and 3.5 feet northeast of the center of a man-hole cover. BM 24M USGS 925 - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 2.7 mles to Juncton wth Martnez Lake Road to the left; thence left on Martnez Lake Road gong northwest for 2.4 mles to road fork; take rght fork and go for 0.35 mle to the mark on the rght. The mark s a standard USGS bench mark dsk stamped: "24M 925 424" and cemented n a drll hole n a boulder that projects 0.4 foot above ground. It s located 40 feet west of old Martnez Lake Road and 3.7 feet east of a wtness post. u Ü u ü :. FLATHILL USCtoGS 934 - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S Army Yuma Provng Ground, go north on hghway 95 for 2.7 mles to the Juncton wth Martnez Lake Road to the left; thence left on Martnez Lake Road for 2.4 mles to a road fork; take rght fork for 0.2 mle to a power lne crossng; turn rght gong north on power lne road for. mles to the staton on the left. The mark s a standard USC&GS trangulaton staton dsk stamped: "FLATHILL 934" and set n the top of a concrete post, 2-lnches square, that projects 0.2 foot above ground. It s located on the top of a small hll about 00 feet west of the powerllne. I BM 2B DMATC 974 - From the ntersecton of U.S Hghway 95 and the man entrance road~to the U.S. Armv Yuma Provng Ground, go north on hghway 95 for 2.7 mles to the Juncton wth Martnez Lake Road to the left; thence left on Martnez Lake Road for 2.4 mles to a road fork; take rght fork and go north for 2. mles to the turn-off to Cbola Range Headquarters and ste of mark. The mark s a Defense Mappng Agency dsk stamped: "BM 2B T0P0 CENTER 974" and set n a drll hole n the concrete base at the southeast corner of monument to "j.g. PHILLIPS. The monument s located n the southeast corner of the ntersecton, 85 feet southeast of the ntersectng centerlne of Martnez Lake Road and the road to Cbola Range Control and 98 feet south of the centerlne of the road to Cbola Range Control. A-86

.; - " - - U D a a CAMERA SITE 4 DUVTC 974 - From the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 2.7 mles to the Juncton wth Martnez Lake Road to the left; thence left on Martnez lake Road for 2.4 mles to a road fork; take rght fork and go north for 2. mles to the turn-off to Cbola Range Control; thence rght, contnung northerly for 0.7 mle to a road on the rght (Cbola Range Control s on the west sde of the road), turn rght and go east for 0.65 mle to camera ste 4 on the left. The mark s a Defense Mappng Agency dsk stamped: "CAMERA SITE 4 TOP0 CENTER 974" cemented n a drll hole at the north corner of an 8 feet X 22 feet concrete pad. MPS 25 DMATC 974 - From the ntersecton of U.S. Hghway 95 and the marn "entrance roäd to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 2.7 mles to the Juncton wth Martnet Lake Road; thence left on Martnez Lake Road for 2.4 mles to a roac* fork; take rght fork gong north for 2. mles to the turn-off to Cbola Range Control; turn rght and contnue northerly for 0.7 mle to a -cad on the rght (Cbola Range Control s on the west sde of the road); turn rght and go east for 0.8 mle to a road fork; take rght fork and contnue east for 0.9 mle to the pnd of road and the mark at the north sde of cleared area. The mark s a Defense Mappng Agency dsk stamped: "MPS 25 TOPO CENTER 974" and set n the top of a round concrete post, 2-nches n dameter, that projects 0.4 foot above ground. MPS 25 DMATC 974, REFERENCE MARK NO. - Located 36.246 meters (8.92 ft.) south"! the staton. It s a Defense Mappng Agency dsk stamped: "MPS 25 RM NO. TOPO CENTER 974" and cemented n a drll hole n a block of concrete, 2-feet square, that s flush wth the ground. MPS 25 EMATC 9 74 REFERENCE MARK NO. 2 - Located 30.02 meters T98.49 ft.) southwest of the staton. It s a YPG Survey dsk stamped: "MPS 25 97" and set n the top of a concrete post, 5-nches square, that s flush wth the ground. BM 96 USCE 968 - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 2.7 mles to the Juncton wth Martnez Lake Road to the left; thence left on Martnez Lake Road for 2.4 mles to a road fork; take rght fork and go north for 3.8 mles to mark on the left. The mark s a Corps of Engneers cap stamped: "USCE 96 LA DIST 968" affxed to the top of a /2 nch ppe that projects 0.3 üoot above ground. It s located 74 feet west of the centerlne of Martnez Lake Road and 5.2 feet west of a metal wtness post. A-87

. - BM 23M ÜSGS 925 - From the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 2.7 mles to the Juncton wth Martnez Lake Road to the left; thence left on Martnez Lake Road for 2.4 mles to road fork, take left fork and contnue on Martnez Lake Road for 4. mles to the staton on the rght sde of road. The mark s a USGS dsk stamped: "23M 925 42" and cemented n a drll hole n a boulder that projects 0,4 foot. It s located 470 feet east of the centerlne of Martnez Lake Road and 30 feet west of the old abandoned Martnez Lake Road. T5S R2W S33 GLO 946 - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 2.7 mles to Juncton wth Martnez Lake Road to the left; thence left on Martnez Lake Road for 2.4 mles to fork n road; take rght fork gong north for 4.6 mles to a gravel road to the left; turn left and go west for 0.5 mle to the mark on the left. The mark s a USGLO dsk stamped: "T5S R2W S33 S5 S4 T6S R2W 946" and rveted to the top of a /2 nch ppe that projects 0.5 foot above ground. It s located 2 feet west of the centerlne of gravel road and 3.0 feet east of a wtness post. SITE 2 DMATC 974 - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 2.7 mles to the Juncton wth Martnez Lake Road to the left; thence left on Martnez Lake Road for 2.4 mles to fork n road; take rght fork and go north for 4.6 mles to a gravel road to the left; turn left and go west for 0.5 mle to a GLO mark on the left; bear to the rght, upgrade, and go east for 0.2 mle to the top of hll and ste of an astro dome» The mark s a Defense Mappng Agency dsk stamped: "SITE 2 T0P0 CENTER 974" and cemented n a drll hole at the southeast corner of concrete pad for astro dome..! L. TBM 82 - From the ntersecton of U.S. Hghway 95 and the man entrance 7oad - tb the U.S. Army Yuma Provng Ground, go north on hghway 95 for 2.7 mles to the Juncton wth Martnez Lake Road to the left; thence left on Martnez Lake Road for 2.4 mles to fork n road; take rght fork and go north for 5.9 mles to a gravel road on the rght (Cbola West Access Road) and ste of mark. The mark s a ralroad spke n the base of a telephone pole n the northwest corner of the ntersecton. A-88

WfWM :; D.: u u : ' j BM 3B DMATC 974 - From the Intersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 2.7 mles to the Juncton wth Martnez Lake Road to the left; thence left on Martnez Lake Road for 2.4 mles to fnrl In road; take rght fork and go north for 5.9 mles to a gravel road to the rght (Cbola West Access Road); turn rght and go northeast for 0.75 mle to the Juncton wth Water Tank Road and ste of the mark on the left. The mark s a Defense Mappng Agency dsk stamped: "BM 3B T0P0 CENTER 974" and set n the top of a round concrete post, 2-nches n dameter, that projects 0.2 foot above ground. It s located 4 feet west of Cbola Road and 3.0 feet northwest of a wtness post. BM 4B EMATC 974 - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 2.7 mles to the Juncton wth Martnez Lake Road to the left; thence left on Martnez Lake Road for 2.4 mles to fork n road; take rght fork and go north for 5.9 mles to a gravel road to the rght (Cbola West Access Road); turn rght and go northeast for 0.75 mle to the Juncton wth Water Tank Road; bear left and go north for 2.0 mles to the mark on the left. The mark s a Defense Mappng Agency dsk stamped: "BM 4B T0P0 CENTER 974" and set n the top of a round concrete post, 2-nches n dameter, that projects 0.3 foot above ground. It s located 74 feet west of the centerlne of road and 3.2 feet east of a wtness post. BM 5B DMATC 974 - From the Intersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 2.7 mles to the Juncton wth Martnez Lake Road to the left; thence left on Martnez Lake Road for 2.4 mles to fork n road; take rght fork and go north for 5.9 mles to a gravel road to the rght (Cbola West Access Road), turn rght and go northeast for 0.75 mle to the Juncton wth Water Tank Road; bear left and go north for 4.0 mles to the mark on the left. The mark s a Defense Mappng Agency dsk stamped: "BM 5B TOP0 CENTER 974" and set n :he top of a round concrete post, 2-nches n dameter, that project;; 0.3 foot above ground. It s located 74 feet west of the centerlne of road and 2.8 feet east of a wtness post. A-89

SITE 2 DISC YPG - From the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna R< ad) to the U.S. Army Yuma Provng Ground, LI go north on hghway 95 for 2.7 mles to the Juncton wth Martnez Lake Road to the left; thence left on Martnez Lake Road for 2.4 mles to fork n road; take rght fork and go north for 5.9 mles to a gravel road to the rght (Cbola West Access Road); turn rght and go ' northeast for 0.75 mle to tho Juncton wth Water Tank Road; bear left and go north for 4.7 mles to a crossroad (Cbola Front Road); turn left and gt west for.4 mles to the astro dome and ste of. j mark. The mark s a YPG survey dsk stamped: "SITE 2 DISC" and cemented n a drll hole at the northeast corner of the concrete pad for the astro dome.. I 00 CMATC 974 - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 2.7 mles to the Juncton wth Martnez Lake Road to the left; thence left on Martnez Lake Road for 2.4 mles to fork n road; take rght fork and go north for 5.9 mles to a gravel road to the rght (Cbola West Access Road); turn rght and go northeast for 0.75 mle to the Juncton wth Water Tank Road; bear left and go -"orth for 4.7 mles to a crossroad (Cbola Front Road); turn left and go west for.4 mles to the astro dome and ste 2. The mark s on the north sde of a cleared area. It s a Defense Mappng Agency dsk stamped: "looll TOFO CENTER 974" and set n the top of a round concrete post, 2-nches n dameter, that projects 0.3 foot above ground. It s located 77.2 feet north of the northeast corner of the concrete pad for the astro dome, 78.56 feet north of Ste 2 Dsc and 5.0 feet east-northeast of the east corner of a 0-foot X 2-foot concrete pad. SITE 2 LASER YPG 974 - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 2.7 mles to the Juncton wth Martnez Lake Road to the left; thence left on Martnez Lake Road for 2.4 mles to fork n road; take rght fork and go north for 5.9 mles to a gravel road to the rght (Cbola West Access Road); turn rght and go northeast for 0.75 mle to the Juncton wth Water Tank Road; bear left and go north for 4.7 mles to crossroads (Cbola Front Road); turn left and go west for.3 mles to concrete pad and mark on the rght. The mark s a YPG Survey dsk cemented n a drll hole at the east sde of the concrete pad. It s located 80 feet north of Cbola Front Road. The dsk s not stamped. A-90

TR 44 USGS 934 - From the ntersecton of U.S. Hghway 95 and the " man entrance road (Laguna Road) to the U.S. Army Yuma Provng Ground^ tt go north on hghway 95 for 7.4 mles to the Juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road for 7.6 mles to a road to the left (Cbola Front Road); turn left and go west for 3.9 mles to crossroads; turn rght on track road and go north for 0.45 mle to mark on the left. The mark s a USGS dsk stamped: "TR 44 399 934" and set n the top of a concrete post, 6-nches square, that projects 0.5 foot above ground. It s located 68 feet»4 west of track road, 5 feet east of a dran and 3.7 feet east of a wtness post..«bm 52 YPG - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the juncton wth Mddle Mtn. Road to the * left; thence left on Mddle Mtn. Road for 7.6 mles to a road to the left CCbola Front Road); turn left and go west for 0.65 mle to the mark on the left. The mark s a YPG Survey dsk stamped: "BM 52",, and set n the top of a concrete post, 5-nches square, that projects 0. foot above ground. It s located 45 feet south of the centerlne - - of road and 2.8 feet north of a wtness post... BM 54 YPG - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on «hghway 95 for 7.4 mles to the juncton -vth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road for 7.6 mles to a road to»"he nleft (Cbola Front Road); turn left and go west for 0.25 mle to the mark on the left. The mark s a YPG Survey dsk stamped: "BM 54" and set n the top of a concrete post, 5-nches square, that projects.. 0.2 foot above ground. It s located 38 feet south of the centerlne of road and 3.5 feet east of a wtness post. SITE DISC VPG - From the ntersecton of U.S. Hghway 95 and the,. man~entfance road to the U.S. Army Yuma Provng Ground, go north on hghway 9"> for 7.4 mles to the juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road for 7,5 mles to a road to the left (Cbola Front Road); turn left and go west for 3. mles to a gravel roaa to the left; turn left and go south for 0.35 mle to the astro dome and ste of the mark. The mark s a YPG Survey dsk stamped: "SITE DISC" and cemented n a drll hole at the northwest corner of the concrete pad for the astro dome. A-9

- : ' '.'. IR 2 DMATC 974 - From the ntersecton of U.S. Hghway 95 and the man entrance'foad (Laguna Road) to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the Juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road for 7.6 mles to a Lj road to the left (Cbola Front Road); turn left and go west for 3.5 mles to the mark on the rght. The mark s a Defense Mappng Agency dsk stamped: "R 2 T0P0 CENTER 974" and set n the top of a round Ll concrete post, 2-nches n dameter, that projects 0. foot above ground. It s located 50 feet north of the centerlne of road and 4.0 feet west of a wtness post. IR 2 DMATC 974 REFERENCE MARK NO. - Is located 2.422 meters T?0.28 fttt northeast of the staton." It s a Defense Mappng Agency \ ) dsk stamped: "R 2 RM NO. T0P0 CENTER 974" and set n the top of a round concrete post, 2-nches n dameter, that projects 0.2 foot above ground. I IR 2 DMATC 974 REFERENCE MARK NO. 2 - Is located 22.903 meters \ (75.4 ft.) southeast of the~staton. It s a Defense Mappng Agency - ' dsk stamped: "R 2 RM NO. 2 T0P0 CENTER 974" and set n the top of a round concrete post, 2-nches n dameter that, projects 0,3 foot above ground. BM 485 YPG - From the ntersecton of U.S. Hghway 95 and the man entrance read to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road for 7.6 mles to a road to the left (Cbola Front Road); turn left and go west for.5 mles to the mark on the left. The mark s a YPG Survey dsk stamped: "BM 485" and set n the top of a concrete post, 5-nches square, that projects 0.3 foot above ground. It s located 40 feet south of the centerlne of road and 4.0 feet south of a wtness post. LJ IRCC DMATC 974 - From the Intersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road for 7.6 mles to a road to the left (Cbola T ont Road); turn left and go west for.4 mles to Cheyenne Base Road to the rght. The mark s located 76 feet south of the centerlne of Cbola Front Road and 20 feet west of the extended centerlne of Cheyenne Base Road. The mark s a Defense Mappng Agency dsk stamped: "IRCC T0P0 CENTER 974" and set n the top of a round concrete post, 2-nches n dameter, that projects 0.2 foot above ground. A-92

*w*>&--':3*a"vfm:- -v^mkmr^^f» I :; D 0 Ü a a > IRCC DMATC 974 REFERENCE MARK NO. - Located 24.54 meters (79.25 ft.) west of the staton. It Is a Defense Mappng Agency dsk stamped: "IRCC RM NO. TOPO CENTER 974" and set n the top of a round concrete post, 2-nches n dameter, that projects 0.2 foot above ground. IRCC DMATC 974 REFERENCE MARK NO. 2 - Located 3.607 meters (44.64 ft.) north of the statonr ft s a Defense Mappng Agency dsk stamped: "IRCC RM NO. 2 TOPO CENTER 974" and set n the top of a round concrete post, 2-nches n dameter, that projects 0.3 foot above the ground. S2 MET YPG 97 - From the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the Juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road for 7.6 mles to a road to the left (Cbola Front Road); turn left and go west for.4 mles to Cheyenne Base Road to the rght and ste of mark. The mark s a YPG Survey dsk stamped: "S2 MET 97" and cemented n a drll hole n the center of a 5 foot square concrete pad. It s located 88 feet north of the centerllne of Cbola Road, 29 feet east of the centerlne of Cheyenne Base Road and 5.5 feet east of a wtness post. SITE 0 DISC YPG - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 7.4 mles to the Juncton wth Mddle Mtn. Road to the left; thence left on Mddle Mtn. Road for 7.6 mles to a road to the left (Cbola Front Road); turn left and go west for.4 mles to Cheyenne Base Road to the rght; turn rght and go north for 0.7 mle to a road to the left (Movng Target Road); turn left and go west for 0.65 mle to the astro dome and ste of mark. The mark s a YPG Survey dsk stamped: "SITE 0 DISC" and cemented n a drll hole at the southwest corner of the concrete pad for the astro dome. SPUR LINE 282+75.29 AHD - To reach from the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 3.3 mles to the Juncton wth Aberdeen Road to the rght (Entrance road to Kofa Frng Range) and the ste of the mark. The mark s an AHD dsk stamped: "282+75.29 389 0E" and set n the top of a round concrete post, 6-nches n dameter, that projects 0.4 foot above ground. It s located 00 feet west of the centerlne of the hghway and 3.3 feet south of an AHD R/W marker. A-93

- I>v >" -' ' vv-r :'" -! VB <r»«n,.» -..., ', TBM 24 - From the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the U.S. Army Yuma Provng Ground,, go north on hghway 95 for 3.3 mles to the Juncton wth Aberdeen Road to the rght; turn rght and go east for. mles to crossroads; contnue straght ahead, east for about 2^0 feet to the mark on the rght. The mark s a chseled square on the south end of a concrete headwall. It s located 64 feet south of the centerllne of Aberdeen Road, 27 feet east of the centerllne of W. 3rd Avenue and 43.3 feet northwest of the southwest corner of buldng No. S359. TBM 43 - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 / for fr>r S. 3.33 m-l mles os to tn the t.ho Juncton lunoton wth wl f.h Aberdeen Ahnrre(>n Road RonH to tn the rght; rlffht? turn rght on Aberdeen Road and go east for. mles to crossroads; turn left and go north on W. 3rd. Avenue for.4 mles to buldng 3534 and the mark on the rght. The mark Is the eastern most bolt of three D bolts set In a concrete pad on the east sde of buldng 3534. The bolt s located 37 feet north of the centerllne of th St., 6.65 feet east-northeast of the southeast corner of buldng 3534 and 2.5 feet west of the edge of the concrete pad. ü BM 2A EMATC 974 - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army YUIDB Provng Ground, go north on hghway 95 for 3.3 mles to the juncton wth Aberdeen Road to the rght; turn rght on Aberdeen Road and go east for. mles to crossroads; turn left and go north on W. 3rd Avenue for 2.5 mles to 5th Street and ste of mark. The mark s a Defense Mappng Agency dsk stamped: "BM 2A TOPO CENTER 974" and set n the top of a round concrete post, 0-nches n dameter that projects 0.2 foot above ground. It s located 63 feet east of the centerllne of W. 3rd. Avenue, 48 feet south of the centerllne of 5th Street and 22.0 feet southeast of a pole wth telephone box. u u..! Ü U I BM 74YPG - From the Intersecton of U.S. Hghway 95 and the man entrance road to the U.S. Arry Yuma Provng Ground, go north on hghway 95 for 3.3 mles to the Juncton wth Aberdeen Road to the rght; turn rght on Aberdeen Road and go east for. mles to crossroads; turn left and go north on W. 3rd Avenue for 3.2 mles to the mark on the rght. The mark s a YPG Survey dsk set n the top of a concrete post 5-lnches square that projects 0.3 foot above ground. It s located about 300 feet west of the centerllne of W. 3rd Avenue. Note: The mark Is not stamped. A-94

' **&mm4l!mmm***-mmmm.,,.. Z../'.. '. " ' r. l I A D Ö a TBM 86 - From the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 3.3 mles to the Juncton wth Aberdeen Road to the rght; turn rght on Aberdeen Road and go east for. mles to the crossroads.; turn left and go north on W. 3rd Avenue for 4.4 mles to the mark on the rght. The mark s the south corner of a 3 /2 feet X 4 /2 feet concrete valve box for a water man. It s located 78 feet east of the centerlne of W. 3rd Avenue. SITE 5 YPG 969 - From the Intersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 3.3 mles to the juncton wth Aberdeen Road to the rght; turn rght on Aberdeen Road and go east for. mles to crossroads; turn left and go north on W. 3rd Avenue for 4.5 mles to a sharp curve and a gravel road to the left; turn left and go west and north, upgrade, for 0.4 mle to fork n road; take left fork and go southwest for 0.5 mle to the astro dome and ste of mark. The mark s a YPG Survey dsk stamped: "SITE 5 969" rnd cemented n a drll hole at the southeast corner of concrete pad for the astro dome. - l! PGT NO. 2 AMS 960 - From the ntersecton of U.S. Hghway 95 and the man entrance road to the U.S. Army Yuma Provng Ground, go north on PI hghway 95 for 3.3 mles to the Juncton wth Aberdeen Road to the rght; turn rght on Aberdeen Road and go east for. mles to crossroads; turn left and go north on W. 3rd Avenue for 4.5 mles to a sharp curve and a gravel road to the left; turn left and go west nand north, upgrade for 0.4 mle to fork n road; take left fork and go southwest for 0.5 mle to the astro dome and parkng area. The mark s on the hghest part of hll north of astro dome. It s a Corps of Engneers U.S. Army dsk stamped: "PGT NO. 2 ARMY MAP SERVICE 960" and cemented n a drll hole n a boulder. A 3 foot square concrete pad has been placed round the dsk. I. PGT NO. 2 AMS 960 REFERENCE MARK NO. - Located at a horzontal dstance of 9.8r> m«ters (65.0 ft.) south-southeast of the staton. The mark s a Corps cf Engneers, U.S. Army dsk stamped: "PGT NO. 2 RM ARMY MAP SERVICE I960" and cemented n a drll hole n a boulder. PGT NO. 2 AMS 960 REFERENCE \tark NO. 2 - Located at a horzontal dstance of 9.98 meters (32.54 ft.) northeast of the staton. The mark s a Corps of Engneers, U.S. Army dsk stamped: "PGT NO. 2 ARMY MAP SERVICE 960" and cemented n a drll hole n a boulder. A-95

.* " r U Ü 002 DMATC 974 - From the ntersecton of U.S. Hghway 95 and the man entrance road (Laguna Road) to the U.S. Army Yuma Provng Ground, go north on hghway 95 for 3.3 mles to the Juncton wth Aberdeen Road to the rght; turn rght on Aberdeen Road and go east for. mles to crossroads; turn left and go north on W. 3rd Avenue for 4.5 mles to a sharp curve and a gravel road to the left; turn left and go west and north, upgrade, for 0.4 mle to fork n road; take rght fork and go northeast for 0. mle to the top of hll and a buldng and the ste of staton. The mark s a Defense Happng Agency dsv stamped: "002 TOP0 CENTER 974" and cemented n a drll hole on the roof of the buldng. It s located 3.3 feet southwest of the northeast corner of buldng and 8.95 feet northwest of the southeast corner of buldng. u / A-96

L. D D n.. BENCHMARK HEIGHT CORRECTION ADJ HEIGHT JUNCTION (METERS) (METERS) (METERS) USEm+7208 92.59560.00000 92.59560 TR 62 GS*» 7 78.67570 -.00000 78.67570 2 USE60*U000 4 02.57390.002 02.57503 3 USE7b*üOOO 5 03.43848.002 03.43960 4 UStll90*Ü000 6 07.7706.00098 07.7803 b COUNTY WELL2 9 6.55762.00340 6.560 6 3-A ÜMATC 7 I«85.85707.0066 85.86794 7 HILLTOP 26 34.94064.02253 34,977 8 KM 2 HILLTCP 28 34.52953.02253 34.55206 9 TbM 264 32 264.67o07.0879 264.69486 0 966 YPG 33 294.4600.0879 294.47880 SITE 9 DISC 35 290.96723.0878 290.9860 2 SITE 7 MON U3 85.79474.0470 85.80944 3 9-A DMATC 7 US 72.70327.0435 72.7762 4 S60 YPG 53 70.84625.0275 70.8600 5 SATE 6 MON 55 20.08747.0302 20.0046 6 TbM 90 57 89.49b80.076 89.50656 7 SITE 3 DMATC 58 239.69720.075 239.70895 6 TBM 86 59 85.9437.0038 85.92475 9 SITE 5 60 259.35.0047 259.32556 20 PGT2KM2 AMS 63 262.82789.000 262.83799 2 HAWT 8269 64 73.08967.0038 73.0004 22 YPG DISK NS 65 73.97337.0038 73.98375 23 BM 2 CE 95 70 94.74852.00075 94,74927 24 MON LONG 7 97.9950.00075 97.20025 25 TBM 00 73 00.27770.0023 00.2800 26 SITE 75 83.79b29.0024 83.79843 27 MPS 25 RMTC 79 69.45335.0047 69.45752 28 MPS 25 YPG 6 70.2068.0047 70,2485 29 GLO 9H6 87 9.83707.00702 9.84409 30 SITE 2 88 52.72490.00683 52.7374 3 SITE 2 YPG 93 07.7843.0084 07.79497 32 IK <*<t USGS 9U 2.66055.069 2.67223 33 S2 MET YPG 97 50.04700.0398 50.06096 34 BM 52 YPG 98 56.04376.0398 56.05774 35 BM 5H YPG 99 64.77369.0398 64.78768 36 SITE 2LASER 0 04.2575.0099 04.3674 37 IR 2 RM m 9.40225.069 9.4394 38 IRCC RM 08 48.86996.0397 48.88393 39 IR 2<* RM 2 HI 200.6423.0275 200.65507 40 IR 23 RM * 278.7725.0878 278.79003 4 GEO 002 5 267.97884.0046 267.98929 42 GEO 000 6 89.63703.0470 89.6573 43 TBM25TC75 8 7.5723.00000 7.5723 44 IR 23 TC 7<» 2 279.026.0879 279,03994 IRCC TC 7H 05 48.9677.0397 48,97574 IR 2 TC 7 02 8.7856.0b9 8,79729 IR 23 RM 2 3 278.6637.0879 278,6356 IR 2H TC 7H 0 20.33534.0275 20,34809 IR 2«* RM 09 200.52633.0276 200,53906 IRCC RM 2 07 49.08497.0397 49,09894 BM <»85 YPG 06 47.83968.0398 47,85365 IR 2 RM 2 03 9.32557.0b9 9,33726 GEO 00 00 07.02946.0099 07,04045 A-97

SITE 0 VPG 96 m.6020.030 44,6430 ^ITE It YPG 95 2.30723.026 2,3984 BM 5b DMATC 92 0«.73543.007 04,7456 BM Hb DMATC 9 89.6822.00925 89,7747 bm 3B DMATC 90 92.5455,00824 92,55339 TOM 02 89 82.29506.00792 82,30298 23 M uses 86 25.60525.0064 2b,665 9b USCE 68 85 26.92292.0066 28,92908 BM 2B DMATC en 39.97383.00532 39,9795 CAMEKA SITE 83 7.5935.00427 7,59777 MPS 2b DMATC 82 70.0532.0049 70,05552 MPS 25 RM2 80 69.83236.0048 69,83654 FLATHILL 78 64.7379.00369 64,7460 2*» M USGS 77 29.37684.00325 29.38009 AIR YPG 969 76.6573.00263,65994 UE IBM 00 7H 09.0527.0025 09,0742 BM IB 72 07.4922.0039 07,49360 AHÜ282+7529 WEST 69 8.427.00402 8,433 TbM 2H 68 24.52.00567 24.2088 TbM m3 67 42.6305.00724 42.62029 bm 2A DMATC 66 57.3456.00836 57.4292 P6T 2 AMS60 62 265.866.000 265.967 P6T2KM AMS 6 26.8435.000 26.82446 0-A DMATC7* 56 67.36730.0237 67,37966 SITE 6 DISC 5 20.42077.0302 20,43379 587 YPG 52 76.78434.0343 78,79777 20-M US6S 25 5 73.7620.0373 73,77493 563 YPG 50 7.68247.0408 7,69655 bbl YPG «9 7.03325.0438 7,04763 68 YPG 7 88.33500.0454 88.34954 SITE 7 DISC US 85.8242.0472 85,974 OP MOUNT YPG «4» 203.00255.055 203,0770 TBM 89 «3 89.838.0543 89,9660 OP MID YPG 2 99.3407.0592 99,35699 8-A DMATC 7««a 96.97066.0620 96,98686 SITE 8 DISC «0 229.433.060 229,584 TbM 225 39 225.7083.0729 225,883 239 YPG 38 238.73667.0772 238,75438 7-A DMATC 7 37 24.767.0797 24.77968 TR-*»0 USGS3<» 36 257.005.0849 257.953 U.E. 966 YPG 34 294.6767.0879 294.63646 b-a DMATC 7«3 279.77996.02002 279,79998 TBM 30» 30 304.0967.02096 304,263 TH-25 USÜS3 29 298.84730.028 298,869 RM HILLTOP 27 342.27480.02254 342,29734 TBMIOIB 6S34 25 30.2393.02227 30,25420 TBM 288 24 288.06996.0265 288,096 TR-27 US6S3 23 26.48776.02067 28,50843 TBM 275 22 274,74497.0203 274,76527 TR-2Ö US6S3H 2 267.38946.0885 267,4083 TbM 839 20 269.088.0846 <:69,09966 5-A DMATC 7H 9 248.8086,0744 246.9830 TbM 235 8 235.05646.060 235.07247 MARKED TURN 7 229.542.0564 229.6706 «-A DMATC 7H 6 220.9300.0442 220.94443 AHD628*293 5 206.62582.0299 206.6386 AHD^60*OQOO 3 65.72759.00863 65.73642 LJ ) j U LJ.. t A-98

WMWIWH» l :'- AHD3Ö0+0Ü00 2 m.757.00675 44.75249 -A ÜMATC 7 22.2 «29.00b9 22.24898 AHD202*7529 EAST 0 8.2904.0045 8.29456 USE235^U000 8 09.52928.00297 09.53225 CNTY WELL AZ 7 0.42322.00209 0.42532 US>Em*<tb07 3 97.96276.0007 97.96346 AHD30+677 2 95.52773.00039 95.5282 :; l - > A-99

_. - '.: -*,, ;. 'Z ^ J DMAAC 75-5 GEOCEIVER SURVEYS FOR GLOBAL POSITIONING SYSTEM TEST ^ _ *. Introducton: Ths project was accomplshed by the Geodetc Satellte Branch to meet requrements establshed by SAMSO/YET letter, subject: Request for DMA Support, dated 25 October 974. Fve GPS statons were " geocentrcally postoned usng GEOCEIVER data to permt the transformaton of all statons used n the GPS test to the WGS-72 coordnate system. DMATC JL performed conventonal surveys at the U. S. Army Yuma Provng Grounds, Arzona, to connect the four GEOCEIVER statons wth the other statons n the area whch wll be used n the GPS test program. Defense Mappng Ik Agency Aerospace Center Geodetc Survey Squadron (DMAAC GSS) performed a conventonal survey at San Clemente Island, Calforna, to connect one GEOCEIVER staton wth three other statons n the area whch wll be used n the GPS test. Requred documentaton and survey tes to Irral control were made at all statons as requred by the Gudelnes for Geodetc Satellte Programs, July 972, Ref. 2. Reconnassance: DMAAC GSS performed reconnassance of the Yuma Provng!. t Grounds statons n November 974 and SAMSO performed reconnassance of the San Clemente Island staton n February 975. Ths provded necessary nfonaton to deploy and support tht GEOCEIVER teams. When Staton Hlltop was replaced by Ste 9, DMATC provded the necessary reconnassance nformaton.. for Ste 9. 3. Requrements: Plannng establshed that relatve conventonal survey te accuraces between range trackng statons, local control, and GEOCEIVER 6-

>".».II, ' u. >»t^v-j *? u statons must meet the establshed survey requrements (one slgma) of one part In 0 6 + 2 cm for dstances and + 3 arc seconds for azmuth and elevaton angles. 3. Survey: Conventonal surveys, GEOCEIVER surveys and related docu- u mentaton are detaled In the project specfcatons. 3.2 New or Modfed Computer Programs: No modfcatons were requred to process, reduce or analyze ths data. 3.3 Specal Studes: No specal studes were done relatng to ths project.. a 3.4 Changes In Data Processng Procedures: The data processng for ths project was routne. 3.5 Changes In Qualty Control Procedures: Qualty control was routne as establshed for feld and offce control. No changes were requred. 4. GEOCEIVER Survey Operatons: The teams followed standard operatng procedures as requred by the Feld Operatons Manual Doppler Beacon Program but as excepted by the project specfcatons. The plannng efforts of the Geodetc Satellte Survey Secton (ODT) and team chefs resulted In a smooth operaton durng deployment, operatons and recovery of the team. ü D Ll No major problems were encountered. 4. Personnel, Equpment and Deployment: A summary of stes, team Instruments and occupaton data are gven below: B-2

J,, m^ ' " - " V * t -, rv." - ~ r- 0 n D u 023 D D Staton Number 00 002 0009 Staton Locaton YPG, Arzona YPG, Arzona Ste 9, GE0CEIVER Number 00 002 0035 Personnel MSgt Green Sgt Boucher MSgt Green Sgt Boucher Sgt Cravotto Sgt Thompson Ste 7, 0035 Sgt Cravotto Sgt Thompson 003 San Clemente, 0009 5. Specal Studes (Results): No Occupaton Dates 7 Mar - 8 Mar 75 8 Mar - 27 Mar 75 7 Mar - 25 Mar 75 25 Mar - 9 Apr 75 ILt Grappo 2 Mar - 26 Mar 75 TSgt Martn Sgt Summerfleld Sgt Lee specal studes were done as a result of ths project. 6. New or Modfed Computer Program: No modfcaton of program resulted D from ths project. 7. GEOCEIVER Data Processng: Table contans a summary of satellte passes scheduled, executed, avalable for data reducton and mssed. 4 -. Sta. No. TABLE I Data Collecton and Processng Statstcs Scheduled Executed Avalable for Reducton Equpment Error Operator Error 0009 58 52 52 0 3 3 023 00* 54 54 0 0 46 00 7 63 6 3 4 3 002 7 66 66 2 2.. 003 63 58 58 0 5 0 Other *Thls ste had a conflctng 400 Mhz sgnal n the area whch caused the loss of passes.,. B-3

. '.'* ' J* 7^ -. : 7. Qualty Control: Upon recept of the GEOCEIVER data tape., the Geodetc Satellte Data Processng Secton ntally checked the data. The data was then put onto magnetc tape and processed through the computer creatng a lbrary tape. Data fallng to be assembled on the lbrary tape were hand edted and corrected as necessary.. 7.2 Computaton: GEOCEIVER data reducton for ths project was by the Geodetc Satellte Branch. Usng the above lbrary tape wth precse ephemerldes In the Naval Weapons Laboratory (NWL) Long Arc Computer Program to obtan geocentrc coordnates of the survey marks occuped by the GEOCEIVER antenna. 8. Data Analyss and Fnal Results: Durng the analyss of the Long Arc Solutons, the fnal results were found to be excellent. Only ten passes were rejected because of poor qualty. A slght problem was Incurred n reducng the data for staton 023. Due to 400 Mhz frequency nter- ference, 3 passes were collected wth the antenna on a stand and 23 passes.. were collected wthout the stand. The group of 3 passes was adjudged to be the superor set n qualty and ths group was used n the fnal staton coordnate computaton. B-4

^_ r _ TABLE II Data Reducton Statstcs Staton GEOCEIVER Passes Avalable Dates of Passes In Desgnaton Sta. No. for Reducton Occupaton Soluton D 0! Ste 9 Dsc 0009 52 8 Mar-25 Mar 75 60 Ste 7 Dsc 023 5A 27 Mar- 9 Apr 75 3 00 00 6 8 Mar-7 Mar 75 59 002 002 66 9 Mar-27 Mar 75 6 GEOCEIVER STA 003 003 58 3 Mar-2 Mar 75 54 9. Problems Encountered: The frequency Interference at Yuma Provng Grounds Staton 023 added 20 mandays to the project and Increased the cost consderably. Island to manland transportaton delays In returnng [ n the GSA vehcle from San Clemente added 8 mandays to the project. Staton 000 TOPO CENTER 974 could not be occuped due to the frequency Interference. However, when the GEOCEIVER was moved to Staton 023, Ste 7 Dsc, the Interference was less ntense and GEOCEIVER data was collected. Ths left a dsc stamped as If It were a GEOCEIVER staton. In fact. It Is not. 0. Recommendatons: No recommendatons are made as a result of ths project.. - B-5

- - I REFERENCES. Gudelnes for Geodetc Satellte Programs, Edton 4, Defense Mappng Agency, Topographc Center, Washngton, D. C, July 972. 2. Feld Operatons Manual Doppler Beacon Program, DMATM T-l-52220, Department of Defense, Defense Mappng Agency, Jan 973. B-6

-,; > roecc AC 75-5 SURVEY SKETCH JTuma^rovng^Groujjda^^^ Traverse r r CMS Dsc Laser Dsc Stes \ KIR 22 ^ - HeocPlver Staton ^..PreT'red hv Sdney q, LouBflberrY - Geodetc Staton, RM's k BM's Date U June Ü - "cture Ponts Checked bv B-7 JJ^Lta^CflOBfc Ste? O - New Staton Measured Dstance Date JJLJU T\

NAME OP STATION: SITE 9 DISC ' -» - T DESCRIPTION OP TRIANGULATION STATION STATE: Arzona COUNTY: n Yuma - CHICP OF PARTY: MOTK. Set Cravlotto YEAR: 22_ DESCRIBED BY: Capt Lou:sberrv J XKIBHT Or TCLUCOPE ABOVE STATION MARK MCTCRS.t HEIGHT OW LIGHT ABOVE STATION MARK METERS, SURrACB-STATION MARK, UNDERGROUND-STATION MARK OBJECT DISTANCES AND OIRCCTIONS TO AZIMUTH MARK. RCFERKNCE MARKS AND PROMINENT OBJECTS WMICM CAN BE SEEN PROM THE GROUND AT THE STATION BEARING FEKT DISTANCE METER«AZT'n'TH F^ NORTll Ste 7 Dsc Ste 2 Dsc 590.03 A937.A2 89 223 40 8.0 7 3A.5 GLOCEIVF.R STATION looo'j (Ste 9 Dls-.c) Is located 33 mles northeast of Yuma, A Uon*, and 39 mles south of Ouartzte, Arzona, on the Yuma Provng Grounds, Ic reach tl s staton from the Intersecton of U. S. Hghway 95 and Laguna Road, whch s the man entrance road to the U. S. Army Test and Evaluaton Command, Yuma Provng Grounds, proceed northeast on U. S. Hghway 95 7.4 mles to the ntersecton wth ddle Mountan Road (gravel) on the left (nort'). Proceed left (north and west) for 6.7 mles to the Astrodome and mark.tr. The Geucever : tatlon s a 0.05 nblar brass dsk cemented n a drll hole n the west corner of a.2 x.2 meter concrete pad whch s souheast of the Astrodome. It Is stamped: SITE 9 DISC. No reference- o azmuth marks were establshed. I R«f«ta to aotcs a aaaaala of uaaaulatoa and atatc poblcatoaa o( raotolatoo. ttoaaaceat taoaly, wfca>aom«o«o««mclet«la»«ba doa«- tdcecton-atf le measured clockwse, ccferted to ntal atatoa.l B-8

Project AC 75-5 VICINITY SKETCH TocatTo»^^^ Yuma Provng Crounds, Arzona V, / I / ydisccgeo.sta.) I D \ I ft I I w \ \ I // / V / ^ s ~^ OU MIDDLE MOUMTAJN 52 AD - - I ^ - Ceocelver Staclon O - New Staton I Prepared by Sgt Cray.^tto - Pcture Ponts A - Geodetc Staton, RM's & BM's POWT Po. e«! Q - Tank«"^ )^- Fence ZZZI - Roads uatt 9 Mar 975 TnöcKerM)y^'^^ jcajhjloung^jgjjjj^ B-9 Date

*- LOCATION Yuma Provng Grounds, Arzona TRACKING EQUIPMENT PEFERENCE POINT Ce nter of Red Rng on Antenna TYPE OP STATION MARKER 2" Brass Dsc GEODETIC COORDINATES LATITUDE (#) N 33' 07' 35V77 LONGITUDE (X) W 4* 2' 0,., 54 DATUM NAD 927* SURVEYED v (AGENCY) DMATC LOCATION OP SURVEY DATA DMATC ELEVATION OP MARK ABOVE MSL (CEOID) 290.986 METERS t HEIGHT OP REFERENCE POINT ABOVE ELLIPSOID GEODETIC 270.75 METERS AZIMUTH...f rh GEODETIC SUMMARY GEODETIC SATELLITE OBSERVATION STATION EQUIPMENT GEOCEIVER 003 AGENCY (CAST IN MARK) None (OP SATELLITE OBSN. STA.I ELLIPSOID Clarke 866 NORTHING STATION NO 0009 PERIOD OF OCCUPATION 8 Mar 7. - 25 Mar 75 3668255.93) NORTHING HEIGHT OP CEOID ABOVE ELLIPSOID -22.220 METERS * DATUM USED FOR CEOID HEIGHTS Meades Ranch N=0 NAD 927* GRID COORDINATES ant (M) (PT) (M) OMEftVCO ly (AOENCY) DMAAC/GSS STAMPING ON MARK SITE 9 DISC EASTING 747209.00 EASTING TO OBTAIN GRID AZIMUTH, ADO TO THE GEODETIC AZIMUTH TO OBTAIN GRID AZ. (ADO) (SUB.) TO THE GEODETIC AZIMUTH ELEVATION ESTABLISHED BY (AGENCY) DMATC HEIGHT OP TRACKING EQUIPMENT REP. PT. ABOVE STATION MARKER,984 PMOTOIOINTIPICATION BY AGENCY: WHERE PILED: None PROM TO AZIMUTH (OP SATELLITE OSSN. STA.) (KBt (M) (PTI (M) DATE Feb 75 ZONE ZONE DISTANCE GRID GRID :nd METERS SITE 9 DISC SITE 7 DISC 89' 40' IS'.'Ol 590.03 m SITE 9 DISC «;TTE 2 DISC 223 7' 34V5 4937.42 m j r j PAD ^,DOME ^ _"_' - --^CONCRET t ^ ' >\ / ' / _ V^V*-SITE9DISC(6EQSTA.) ' / /' NJC^ I' II SITE 9 DISC I '/ '/ 's ^ 'OLD MIDDLE MTN RD. N SITE 2 DISC A SITE 7 DISC SKETCH OP STATION SITE AND VICINITY KETCH OP SURVEY (SHOW TIE TO LOCAL CONTROL) Th«prsclslen (furst llsttd ort for th«gaod««lc ceordlnotas rsftr to th» datum as d«fn«d by tabl«h*d control n tho area. L PREPARED BY (AGEN :vl DMAAC GSS BATE REV'SED BY (ArtNCYl DATE REVISED BY (AOENCY) DATE 3 Jun 75 B-0

Jm*:/* a g GEOCEIVER STATION 0009 (Ste 9 Dsc) s located 33 mles northeast of Yuma, Arzona, and 39 mles south of Quartzte, Arzona, on the Yuma 7-» Provng Grounds. l To reach ths staton from the ntersecton of U. S. Hghway 95 and Laguna Road, whch s the man entrance road to the U, S. Army Test and -- Evaluaton Command, Yuma Provng Grounds, proceed northeast on U. S. 44 Hghway 95 7. * mles to the ntersecton wth Mddle Mountan Road (gravel) on the left (north). Proceed left (north and west) for l6,7 mles to the Astrodome and marker. j 4 The GEOCEIVER staton s a 0.05 meter brass dsc cemented n a drll hole n the west corner of a,2 x.2 meter concrete pad whch s southeast of the Astrodome. It s stamped: SITE 9 DISC. No reference or azmuth marks were establshed.. *NAD 27 Geodetc Coordnates and geod heght are based on values carred nto the Yuma area through the Precse Geodmeter Traverse, :: B-ll

«'* STATION DESIGNATION DOPPLER RECEIVER GEODETIC SUMMARY SHEET SITE 9 DISC STATION NO POSITIONAL DATA REFERRED TO MODEL GEOCEIVE. Yuma Provng Grounds, AZ LOCATION ELEVATION OF MARK ABOVE MSL (GEOIO) 0009 r^nfpr of ft» V^rk mnt HEIGHT OF TRACKING EQUIPMENT REF. PT. ABOVE STATION M J^O.'jr METERS t k JO* METERS GEODETIC COORDINATES (SURVEY)... DATUM 0 A NAD 927» 33 07' 35V77 W 4 2' OIVISA 268.766n DATUM * X SN u ASTRONOMICAL COORDINATES SOURCE * A. DOPPLER DATA DATUM <t> NWL 9D l 33 07 35,., 37 W HA 0 2' 0A,., A96 25.267 m DATUM ' V NWL 9D -22(J.737.77 m -437330.6A5 r. 3465869.693 ra REMARKSt * ha HEIGHT ABOVE THE ELLIP: Data s from satelltes 60 and 77 from 8-25 Mar 975. 52 psses were collected. 50 w t re used n the fnal rolutlon. T e NWL precse ephemers was held fxed n the staton. The standard errors of the soluton are: 3^ 0...2 ^(.c o>, f/.c^f» sec Oy m 0.898 m. * NAD 27 Geodetc Coordnates and gecd heght are based on values carred nto the Yuma area through the Precse Geodmeter Traverse. PREPARED BV: AGENCY DHAAC GSS NT0LLIER>G0FF ' DATE 30 Apr 75 CHECKED BY: Sdney M, Lounsberry DMAAC' GSS fll tujre spure t r*qmr«a u.'.e re»*cr.'.e ltd*- DATE: 30 Apr 7 B-2

. * I'roUcfc AC 75-5 SURVEY SKETCH fboam Tuna Provng Groun^n, AZ TOTVJT Traverse Ste 9 Dsc K r Ste 8 Dsc P6T2AMS ^ - Geocelver Staton - Pcture Ponts A - Geodetc Staton, RM's (, BM's Prepared bv ^»Sdney M. Lounsberry Date 3 June 75 B-3 Checked by " L rtfflr O - New Staton Measured Dstance Date n Tue U

-> f* -^- DESCRIPTION OF TRIAHGULATIOH STATION NAME Of STATION: ^Qr; STATE: Arzona COUNTY: CHer or ^ARTV: MSgt Green YEAR: MOTK. 974 Yuma DESCRIBED BY: Capt Lounaberry «EIGHT OP TELESCOPE ABOVE STATION MARK METERS.t HEIGHT OP LIGHT ABOVE STATIOH MARK METERS. SURPACE-STATION MARK, UNDERGROUND-STATION MARK DISTANCES AN» DIRECTIONS TO AZIMUTH MARK. REFERENCE MARKS AND PROMINENT OBJECTS WHICH CAN BE SEEN PROM THE GROUND AT THE STATION OBJECT BEARING DISTANCE AZIMUTH FM NORTH SITE 2 Dsc 23.>24 86 26 4.66 Geocelver Staton 00 s located 23 mles north-northeast of Yuma, Arzona, and 46 mles south-southwest of Quartzte, Arzona, on the Yuma Provng Grounds. To reach ths staton from the ntersecton of U.S. Hghway 95 and Laguna Road whch s theman entrance road to the U.S. Army Test and Evaluaton Command, Yuma Provng Grounds, proceed northeast along U.S. Hghway 95 for 2.7 mles to the ntersecton wth Lake Martnez Road. Turn northwest Ueft) and proceed for 2.8 mles to a reverse Y ntersecton wth the other road comng from the Avaton Complex. Contnue north for 5.85 mles to the ntersecton wth West Cbola Access Drve. Turn northeast (rght) and proceed on a gravel road for 0.75 mle to a Y ntersecton wth Water Tank Road. Take the north (left) fork and proceed along West Cbola Access Drve for 5.35 mles to the ntersecton wth Cbola Front Road. Turn west (left) and proceed for.4 mles to Ste 2 and the end of the road. The Geocelver Staton s a standard DMA brass ds' set n the top of a 0.3 meter dameter, con^rett pos (.rojctj; lag Q,\,aee.r abuvt th«ground. It s stamped: 00 TOPO. CENTER 974. The mark s 23.9 meters north of Ste 2 Dsc (set on the northeast corner of the Astrodome pad) and 5.5 meters eastnortheast of the east corner of a 3.0 x 3.6 meter concrete pad. Ü : The subsurface mark s a standard DMA brass dsk set n a drll hole n a rock bured n concrete 0.9 meter below the surface and stamped the same as the surface marker. No reference or azmuth marks were establshed. Rcfet«to aoe ta uauau of umfuuoa ud tae publcatoo of uaagnlaoo. tdtectoa-ansle ncaaued clockwse, referred to ntal «ator tt» aaaceat «etet o«ly. whaa ao ttgoao«euc letela»» bcaa doae. I B-4

-* -~. - ' T«Project AC 75-5 VICINITY SKETCH U. S. Aray Provlngj;roundB I _Yum«_Arlzona_ Cement Pad ^^5.5 24 Meters GE^. STA. OOl \ I Proposed Laser Pad L / \ / f... I Phone te 2 Survey! Mark / / ; -A - Oeocelver Staclon.. O - New Staton.Prepared by Capt Lounsberry - Pcture Ponts A - Ceodetlc Staton, RM'e & BM's Powr Po. e«: (^ - Tank«^/ )(- Fence ZZI^ - Roads uate 3 Dec 97A B-5 ThncKe^Jy Hfgt frpfn Date 7 Mar 975

V? LOCATION Yuma Provng Grounds, Arzona TRACKING EQUIPMENT REFERENCE POINT Center of Red Rng on Antenna TYPE OF STATION MARKER Brass Dsk GEODETIC COORDINATES LATITUDE (*) N 33* 0' A3,.%43 LONGITUDE (X) W 4* 27* 35,., 750 DATUM NAD 927' 5URVEYED»Y (AGENCY) OMATC LOCATION OF SURVEY DATA DMATC ELEVATION OP 07.04(' ABOVE MSL (GEOIO) METERS HEIGHT OF REFERENCE POINT ABOVE ELI 'PSOID 86.96 METERS 0,00IT,C AZIMUTH ABjgMDMec MOMxaora) North t GEODETIC SUMMARY GEODETIC SATELLITE OBSERVATION STATION EQUIPMENT I»TATION NO Geocelver//O0ll 00 AGENCY (CAST IN MARK) PERIOD OF OCCUPATION Defence Mappng Agency (OF SATELLITE OBSN. STA.) ELLIPSOID Clark 8b6 8 Mar 75-7 Mar 75 GRID COORDINATES NORTHING (JW 3 657 48.683 "^ NORTHING (FT) (M) OMCRVEO IV (AGENCY) DMAAC GSS STAMPING ON MARK 00 Topo Center 974 EASTING 737 242.74- EASTING TO OBTAIN GRID AZIMUTH, ADD TO THE GEODETIC AZIMUTH TO OBTAIN GRID AZ. (ADO) (BUS.) TO THE GEODETIC AZIMUTH ELEVATION ESTABLISHED BY (AGENCY) DMATC HEIGHT OF AEOID ABOVE ELLIPSOID - 22.680 METERS DATUM USED FOR GEOID HEIGHTS Meades Ranch N=0 NAD 927* (OF SATELLITE OSSN. STA.) DATE HEIGHT OF TRACKING EQUIPMENT REF. PT. ABOVE STATION MARKER,83b PHOTO! DBNTIPICATION BY AGENCY WHERE FILED; Hone PROM TO AZIMUTH DIITANCI eocelver Sta. loqll Ste 2 Dsc \W 26' VfM 23.924 a (Ml (M) (FT) (M) ZONE JLL ZONE T GRID UTM GRID ORDER 2nd METERS / /CEMEN / PAD GEO. STA.IOOIII ' y -^y JPROPOSEJD \ LASER. 24'M. [ ^"r- ;EO. STA. loon / I \ S. DOME PHONE ISITE 2. SURVEY MARK / N SITE 2 DISC SKETCH OP STATION lti ANO VICINITY SKETCH OF SURVEY (SHOW Tl TO LOCAL CONTROL) Th«prtelslen flfurss llstsd art 'or tht jsadttle eeerdlnstss rsfsr to th» datum as dtflnad by attabllthad cantrol In tha erao. NCY) DATE I MVIIID IV (ASINCY) DATE! REVISED BY (AGENCY) DATE DMAAC GSS May 75 B'6

n mm* IS 0 0 Q 0 ;: GEOCEEVER Staton 00 s located 23 mles north-northeast of Yuma, Arzona, and U6 mles south-southwest of Quartzte, Arzona, on the Yuma Provng Grounds. To reach ths staton from the ntersecton of U, S. Hghway 95 and Laguna Road (whch s the man entrance road to the U. S. Army Test and Evaluaton Command, Yuma Provng Grounds) proceed northeast along U. S. Hghway 95 for 2.7 mles to the ntersecton wth Lake Martnez Road. Turn northwest (left) and proceed for 2.8 mles to a reverse Y ntersecton wth the other road comng from Avaton Complex, Contnue north for 5.85 mles to the ntersecton wth West Cbola Access Drve. Turn northeast (rght) and proceed on a gravel road for 0.75 mle to a Y ntersecton wth Water Tank Road. Take the north (left) fork and proceed along West Cbola Access Drve for 5t35 mles to the ntersecton wth Cbola Front R^nd. Turn west (left) and proceed for.^ mles to Ste 2 and the end of the road, The GEOCEIVER Staton s a standard DMA brass dsk set : the top of a 0.3 meter dameter concrete post projectng 0. meter above the ground. It s stamped: 00 TOPO CENTER 97^. The mark s 23.9 meters north of Ste 2 Dsc (set on the northeast corner of the astrodome pad) and 5.5 meters east-northeast of the east corner of a 3.0 x 3.6 meter concrete pad. The subsurface mark s a standard DMA brass dsk set n a drll hole n a rock bured n concrete 0.9 meter below the surface and stamped the same as the surface marker. No reference or azmuth marks were establshed. *NAD 27 Geodetc Coordnates and geod heght are based on values carred nto the Yuma area through the Precse Geodmeter Traverse,... * & B-7

- DOPPLtR RECEIVER GEODETIC SUMMARY SHEET STATION DESIGNATION IQOll TC 974 STATION NO POSITIONAL DATA REFERRED TC MODEL Geoccver Yuma Provng Grounds, Arzona 00 * Center of Staton Mark LOCATION SN I 00 ELEVATION Of MARK ABOVE MSL (GEOIO) HEIGHT OF TRACKING EQUIPMENT REF. PT. ABOVE STATION MARh \- 07.(MO METERS t.836 METERS _ 6E0PETIC COORD IMATtS»URVCT) DATUM NAD 927* 0 A N 33* 0' 43,., 443 W 4" 27' SS'^SO DATUM 0 X h* h* 84.360m ASTRONOMICAL COORDINATES SOURCE 4 IA U DOFPLER DATA DATUM * 'A h* DATUM RIMARKlt NWL 9D N 33' 0' 43,., 54 l J! W 4' 27' 39,., 0R 65.388 m X v ~, NWL 9D -22644.06 m I -4872354.600 m 3456673.085 m Data Is from satelltes 68 and 77 from 8-7 March, 975. 6 passes were collected, 59 were used n the fnal soluton. The NWL precse ephemers was held fxed n the soluton. The standard errors of the soluton are: o(> - 0.02 s c oa - 0.050 stc r * h= HEIGHT ABOVE THE ELLIPS or. o - 0.86 m * NAD 27 Geodetc Coordnates and geold heght are based on values carred Into the Yuma area through the Precse Geodmeter Traverse. PREPARED BY: AGENCY Nolle R. Goff DMAAC GSS DATE 30 Apr 75 CHECKED BY. Sdney M. Lounsberry DMAAC GSS (It nmre spmcr m rtquteü uns rrvet-» std') DATE 30 Apr 7 B-8

.-' ^ " M- f!'ro ject JAC 75-5 SURVEY SKETCH rxarrm Yuraa Provng Grounds, AZ Tnror Traverse PGT3AMS60 ) I I I I PGT 2 AMS 60 002 Ste 5 Dsc Bench Mark CdGS 934 I _ J^ - Ceocolvpr Staton - "Icture Ponts ^ - Geodetc Staton, RM's (, HM'.s Prepared bv '* Sdney M. Lounsberry Date 3 June 75 Checked bv H. T. McGlone B-9 O - Now Staton - Measured Dstance Dace 9 Jun 75

. DESCRIPTION OF TRIANGULATION STATION MAMe OF TATION!IOC 2 jppq CENTER 974 CHIEF OF PARTY: MSgt Green STATE: YEA«: Arzona COUNTY: Yuma 974 DESCRIBED»Y: Capt Lounsberry MKIOMT OF TBLBSCOFE ABOVE STATION MARK METERS,! NEIOHT OF LIGHT AMOVE STATION MARK METERS SURFACE-STATION MARK, UNOEROROUND-STATION MARK OBJECT DISTANCES AND DIRECTIONS TO AZIMUTH MARK, REPBRBNCE MARKS AND PROMINENT OBJECTS WHICH CAH BE SEEN FROM THE GROUND AT THE STATION FEIT DISTANCE OIRECTIONt SITE 5 DISC PGT2AMS60 79.759 5.787 23 243 33 45 3.8<r 27.03 Geocelver Staton 002 Is located 24 mles northeast of Yuma, Arzona, and 5 mles south of Quartzslte, Arzona, on the Yuma Provng Grounds. To reach ths staton from the Intersecton of U. S. Hghway 95 and Laguna Road, whch Is the man entrance road to the U.S. Army Test and Evaluaton Command, Yuma Provng Grounds, proceed northeast along U.S. Hghway 95 for 3.25 mles to the ntersecton wth Aberdeen Road. Turn east (rght) along Aberdeen Road and proceed for mle to the guardhouse ad gate to the KOFA Range Area. Contnue I for 0. mle to the Intersecton wth West Thrd Avenue. Turn north (left) and proceed along Vest Thrd Avanue for 4.5 mles to an Intersecton wth the Ste 5 Access Road. Turn northwesterly (left) and proceed along gravel road uphll for 0.45 mle to a saddle between the two peaks and a Y fork. Proceed along north I (rtglt) fork to the parkng arcu at the top of the hll, west of a cement buldng. Proceed to the starway on the north sde of the buldng, and the staton Is on the center of the roof of the buldng. The Geocelver staton s a standard DMA brass dsk set n a drll hole and flush wth the roof of a block buldng. It Is stamped 002 TOPO. CENTER 974. The mark s 4.0 meters southwest of the northeast corner of the buldng and 2.7 meters northwe--' of the southeast corner of the buldng. No reference or azmuth marks were establshed. 'I R««c«to Mt* s aaaalt of uut*l*toa ud MM«paUcnoat of traacotooe. tta aaaww ggg oaly, wfcaa ao maovmuuc l«t«la» m bajm doao. - B-20 tdrcctoa-utle aeadued clockwse, reectcd 0 aal «tatoe

, w..) (-* ^ - _... ' VICINITY SKETCH Project Locaton. _ AC 75-5 U. S. Army Provng Grounds, Yuma, Arzona r ' GEO.STA. 002 crete Bldg. A - Oeocelver Staclon O - New S. At Ion Prepared Ivy I Capt Lounsberry uatt- ' 'West Thrd Ave. - Pcture Ponts / /A - Geodetc: Staton, RM'e & BM's Powr P.-) e«? Q - Tank^ ^ >^- Fence Z^Z - Roads 3 Dec 974 US t SMM 9 Mar 975 B-2

r... Jtk. = * jn - «l.' ;. ROOF SKETCH TröTT^cF AC 75-5 LMIHWl. s.arr. Provng ' I ^"«M Grounds, Yuma, Arzona N/A Stars ^ - Heocelver Staton - Pcture Ponts A - Geodetc Staton, RM's f, BM'a Prepared bv MSgt Green *# Mar 975 B-22 Checked bv Capt Lounsberry O - New Staton Measured Dstance Date 25 Apr 975

- -. LOCATION GEODETIC SUMMARY GEODETIC SATELLITE OBSERVATION STATION Yuma Provlnj; Grounds, Arzona 002 TRACKING EQUIPMENT REFERENCE POINT Center of Red Rng on Antenna TYPE OF STATION MARKER Brass Dsc GEODETIC COORDINATES LATITUDE ( ) N 32" 55' 40'.'lz3 LONGITUDE ( X) W 4 lö' ö'.'bsb DATUM.NAU 927* SURVEYED BY (AGENCY) bmatc LOCATION OF SURVEY DATA DMATC ELEVATION OF MARK ABOVE MSL (GEOID) 267.909 METERS HEIGHT OF REFERENCE POINT ABOVE ELLIPSOID 247.499 AZIMUTH NO,.,.;, AMXgNBMK "-«OMSRWrH FROM AGENCY (CAST IN MARK) STATION NO 002 PERIOD OF OCCUPATION Defence Mappng Agency (OF SATELLITE OBSN. STA.) ELLIPSOID Clarke 866 NORTHING NORTHING OBSERVED BY (AGENCY) ÜMAAC GSS 9 Mar 75-27 Mar 75 STAMPING ON MARK GRID COORDINATES OCK (M) (FT) (M) EASTING 002 TOPO Center 974 75^7.^7 EASTING TO OBTAIN GRID AZIMUTH, ADO TO THE GEODETIC AZIMUTH TO OBTAIN HEIGHT OF GEOID ABOVE ELLIPSOID -22.400 METERS t DATUM USED FOR GEOID HEIGHTS Meades Ranch N=0 NAU 9^7* TO sm: 3 uxs TO THE GEODETIC AZIMUTH GRID AZ. (ADO) (SUB.) ELEVATION ESTABLISHED BY (AGENCY) DMATC (OF SATELLITE OBSN. STA.) DATE HEIGHT OF TRACKING EQUIPMENT REF. PT. (KM (M) (FT) (M) Feb 75 ABOVE STATION MARKER. 9 U PHOTOIDENTIFICATION BY AGENCY: WHERE FILED: None AZIMUTH GEOCEIVER SIA 002 23 J3' 3'.'84 79.7)9 r (.LUCLIVhR STA 002 ^T2AMS 60 243 45' 27'.'(.)3 5.7rt7 a ZONf JJ_ ZONE DISTANCE GRID UTM GRID ORDER 2nd GEO 'STA 002 CONCRETE BLD6. AGEO.STA. 002 SITE& RADIO ANT- DOME PGT 2 AMS 60 ASITE 5 DISC N SKETCH OF STATION SITE AND VICINITY r j-j- SKCTCH OF SURVEY (SHOW TIE TO LOCAL CONTROL) Th«pracson fyurat lsted or«for tha geodetc coordnates refer to the datum as defned by establshed control n the area. PREPARED BY (AGENCY) REVISED BY (AGENCY) DATE I REVISED" BY (AGENCY) DATE DMAAC GSS 3 Jun 75 B-23

r* '*. GEOCEIVER Staton 002 Is located 24 mles northeast of Yuma, Arzona, and 5 mles south of Quartzste, Arzona, on the Yuma Provng Grounds. To reach ths staton from the ntersecton of U.S. Hghway 95 and Laguna Road, whch s the man entrance road to the U.S. Army Test and Evaluaton Command, Yuma Provng Grounds, proceed northeast along U.S. Hghway 95 for 3.25 mles to the ntersecton wth Aberdeen road. Turn east (rght) along Aberdeen Road and proceed for mle to the guardhouse and gate to the KOFA Range Area. Contnue for 0. mle to the ntersecton wth West Thrd Avenue. Turn north (left) and proceed along West Thrd Avenue for 4.5 mles to an ntersecton wth the Ste 5 Access Road. Turn northwesterly (left) and proceed along gravel road uphll for 0.45 mle to a saddle between the two peaks and a Y fork. Proceed along north (rght) fork to the parkng area at the top of the hll, west of a cement buldng. Proceed to the starway on the north sde of the buldng, and the staton s on the center of the roof of the buldng. The GEOCEIVER staton s a standard DMA brass dsk set n a drll hole and flush wth the roof of a block buldng. It s stamped 002 TOPO. CENTER 974. The mark s 4.0 meters southwest of the northeast corner of the buldng and 2.7 meters northwest of the southeast corner of the buldng. No reference or azmuth marks were establshed. U.! J Ü U Ul. J *NAD 27 Geodetc Coordnates and geod heght are based on values carred nto the Yuma area through the Precse Geodmeter Traverse. B-24

»>... d.. t > DOPPLER RECEIVtR GcODETIC SUMMARY SHEET ron DESIGNATION 002 TC 974 STATION NO POSITIONAL DATA REFERRED TO MOOCL -RATION Ymna Provng Grounda. AZ ~t IvATION OF MARK ABOVE MSL (GEOIO) GEOCEIVER QQ2 fpnf r of Sta Mark sw mm? HEIGHT OF TRACKING EQUIPMENT REF. PT. ABOVE STATION MARK. DATUM NAD 927* TÜT 5 dayum J D \r * ^ GEODETIC COORDINATES (SURVEY).90 ALTERS, N 32" 55* 40V23 w u* s» svess 245.589m 0 ASTRONOMICAL COORDINATES IA (WuM r NWL 9D DOPPLER DATA X N 32 55' 40V254 V UA* 8* 2,., 99 227.05 m DATUM X v., NWL 9D RPHARKSt -2205836.924 m -4883998.822 m 3447372.28 m * h= HEIGHT ABOVE THE ELLIPSO 0. J Ü Data s from satelltes 77 and 68 from 9-27 Mar 97 5. 66 passes were collected. 6 were used n the fnal soluton. The NWL precse ephemers was held fxed n the soluton. The standard errors of the soluton are: 0$ - 0.02 sec ox - 0.050 sec o u - 0.830 m n * NAD 27 Geodetc Coordnates and geod heght are based on values carred Into the Yuma area through the Precse Geodmeter Traverse. PO^PAREDBY:»,«,,,,» N0LLIE R. G0FF AbfcNCY: DMAAC GSS DATE 30 Apr 75 CHECKED BY: Sdney M. Lounsberry DMAAC GSS (It nnre spjcr t raq/r«cl uve reverse d*-) DATE 30 Apr 75 B-25

AC 75-5 SURVEY SKETCH DRRm Yuaa Provng Grounda. A2 ^umv Ste 9 Dsc Tr a v«r.» J -J Ste 8 Dsc J r JSte 2 Dsc A Ste Dsc 000 aser Dsc Ste 7 sc (023) I I (Ste 2 ^ - r.eocpver Staton - Pcture Ponts ^ - Geodetc Staton, RM's & BM's Prepared bv Sdney M. Lounsberry Date 3 Jun 75 B-26 Checked bv H. T. McGlone O - New Staton - Measured Dstance Date U JIM 7

. n MSCtmOM OP TMANWLATIQM STATION MAM«Or STATION: SITE 7 DISC STATE: Arzona COUNTY: 4IKP OF PANTV: Sgt Cravlotto Y«AN: 974 OC9CRIBEO BY: ITS. Capt LounsbTry moht OP TRLStCOPC AaOVK STATION NANK NCTBm,t NtlONT OF I.IOHT ABOVK STATION NANK MCTERS. SUnrACC-tTATION NANK, UNDIIIONOUN04TATION NARK OSJCCT OKTAMCIS ANO MJICTS TO AZIMUTN MARK, RCPIRINCC MARKS ANO PROMNINT CAN Rl MIN FROM TM GROUND AT TNI STATION MSTANCK SSAMNO PIBT AZIMUTH FM NORTH r 3 3 : f. St«9 Dsc 000 DMATC 974 Laser Dsc Sts 7 Ste 2 Dsc 590.03 80.72 87.006 834.273 9 39 37.06 85 56 40.67 88 54 2.9 23 48 07.29 Ste 7 Dsc s located 27 mles northeast of Yuma, Arzona, and 45 alas south of Quartste, Arzona, on the TUBS Provng Grounds. To reach ths staton fron the Intersecton of U. S. Hghway 95 and Laguna Road, whch Is the man entrance road to the U.S. Any Test «d Evaluaton Conaand, Ynu Provng Grounds, proceed northsast along U.S. Hghway 95 for 2.7 Mles to ths Intersecton wth Lake Martnez Road. Turn northwest (left) and proceed for 2.8 alles to «reverse T Intersecton wth the other road coalng froa the Avaton Conplex. Contnue north for 5.85 alles to the ntersecton wth West Clbola Access Drve. Turn northeast (rght) on the gravel road and proceed for 0.75 alle to a T Intersecton wth Water Tank Road. Take the north (left) fork and proceed along West Clbola Access Drve for 5.35 alles to the ntersecton wth'clbola Front Road. Turn east (rght) and proceed for 4 alles to ths Intersecton wth Mddle Mountan Road. Turn north (left) and proceed along Mddle Mountan Road for 0.75 alles to the Intersecton wth the Ste 7 Access Koud Turn northwest (left) and proceed a^puxnutely 0 mllto the top of the hll and to the concrete pad. The Geocever Staton s a 0.05 aeter brass dsk ceaented n a drll hole n the northwest corner of a.8 x.8 aeter concrete pad. The aark s on the center of three concrete pads and 3.0 asters west of the Astrodoae. It Is stamped: SITE 7 DISC. No references or azmuth marks were establshed. Ü R«f«tt to wmtt m aaaaals of uaag>u>>m aad «uc pablckoa of mu«alwoa. tl* am«a«ggg agl rnkmrn-m» atomommc Ural» m' tdtoctaa-aaglc ea*ue<) clockwse, rcfencd to atal aanoa. B-27

t Project AC 75-5 VICINITY SKETCH U. S. Army Provng Grounds. Yum«, Arlgou f // I I I Or^Tf 023 r I \ V ^SITETDISCCGEO.STA.) / /.' o r,, *, *-l 023 /.^v fr // ' // v «Phone rnone _^ r * * // // // // I I fl,/ '*. -------- If" Jl // /'/ I // A - Geocelver Stadon - Pcture Pont» A - Geodetc Staton, RM'a & BM's O - New Staton - Powr Po.e««Q - Tank«^ )^- Fence IZIZI - Roads Prepared by Capt Lounsberry uate 3 Dec 974 Ttveclted ny Sgt Cravlotto B-5r 26 Mar 75

-'»- ü: -* ü : a a LOCATION Provng Ground. Arzona TRACKING EOUr^MENT «EFeRENCE POINT Center of Red Rng on Antenna TYPE OF STATION MARKER 2" Brass Dsc GEODETIC COORDINATES LATITUDE (#) N 33* 0' 24,., 889 LONGITUDE (X) W 4' 22' 6V80 DATUM NAD 927* SURVEYED BY (AOENCY) LOCA DMATC ON OF SURVEY DATA DMATC ELEVATION OR MARK ABOVE MSL IGEOID) 85.97 METERS t HEIGHT or RKTERBNCE POINT ABOVE ELLIPSOID 65.927 METERS GEIOETIC PROM Ste 7 Dsc Ste 7 Dsc Ste 7 Dsc Ste 7 Dsc AZIMUTH North) mommooo GEODETIC SUMMARY GEODETIC SATELLITE OBSERVATION STATION EQUIPMENT GEOCEIVER 003: AOENCY (CAST IN MARK) None (OP SATELLITE OSSN. STA.I ELLIPSOID Clark 866 w.w HEIGHT.GEOIO ABOVE ELLIPSOID METERS * DATUM USED FOR GEOIO HEIGHTS Meades Ranch N=0 NAD 927* STATION MO 023 PERIOD Of OCCUPATION yww g OMIRVCO SY (AGENCY! ÜMAAC/GSS 27 March - 9 Apr 75 GRID COORDINATES NORTHING (j^y 365678.35 (M) NORTHING (rn (M) STAMPING ON MARK Ste 7 Dsc EASTING 745550.467 (M) (rt) EASTING TO OSTAIN GRID AZIMUTH, ADO TO THE GEODETIC AZIMUTH TO OSTAIN GRID AZ. (ADD) (SUS.) TO THE GEODETIC AZIMUTH ELEVATION ESTABLISHED BY (AGENCY) DMATC HEIGHT OP TRACKING EQUIPMENT REr. PT. ABOVE f TATION MARKER 3.7'"' PHOTOIOINTIFICATION BY AOENCY: WHERE PILPI None TO Ste 9 Dsc 9* 39' 37VQ6 009 ;:^. 9:4 as» sf.' AOVft? Laser Dsc Ste 7 Ste 2 Dsc AZIMUTH 86* ^4' 2l'.'9 273' 48' n7v2q (OP SATELLITE OSSN. S.-A.l (M) DATE Feb 75 ZONE ZONE GRID UTM GRID ORDER 2nd METERS DIBTANCB s9n.on»n.7?l»7.,006 fll<>.?73 * 3.7') Meters fror:;?7 Mat 75 - Apr 75 ;/ / / / SITE 70ISK(0aMTW /'^JTAJOOIO \. SITE 9 DISC /; ' ^^ l - A^ER rvf AD )/ '' // J^. '/ ä: v II / ^^ n SITE 2 DISC LASER DISC SITE 7 DISC SITE 7 / /MIDDLE MTN. RD (023) '/ N SKETCH OP STATION SITE AND VICINITY SKETCH Or SURVEY (SHOW TIC TO LOCAL CONTROL) Tht prsellon ( urs llstsd srs 'or tha 9*edt*lc eeordlnots rsfar to tk* datum dsflnsd by sstabushtd centrsl In th«orso. PREPARED BY (AOENCY) DATE NCY) D*TE I REVISED BY (AOINCY) DATE DMAAC 6SS 3 Jun 75 B-29

' ^* m '" ^ ": r- --..; ".' - ' -, -; I - GEOCEIVER STATION 023 (Ste 7 Dsc) Is located 27 mles northeast of Yuma, Arzona, and 45 mles south of Quartzlte, Arzona, on the Yuma Provng Grounds. To reach ths staton from the Intersecton of U.S. Hghway 95 and Laguna Road, whch s the man entrance road to the U.S. Army Test and Evaluaton Command, Yuma Provng Grounds, proceed northeast along U.S. Hghway 95 for 2.7 mles to the Intersecton wth Lake Martnez Road. Turn northeast (left) and proceed for 2.8 mles to a reverse Y Intersecton wth the other road comng from the Avaton Complex. Contnue north for 5.85 mles to the ntersecton wth West Clbola Access Drve. Turn northeast (rght) on the gravel road and proceed for 0.75 mle to a Y ntersecton wth Water Tank Road. Take the north (Left) fork and proceed along West Cbola Access Drve for 5.35 mles to the ntersecton wth Cbola Front Road. Turn east (rght) and proceed for A mles to the Intersecton wth Mddle Mountan Road. Turn north (left) and proceed along Mddle Mountan Road for 0.75 mles to the ntersecton wth the Ste 7 Access Road. Turn northwest (left) and proceed approxmately 0. mle to the top of the hll and to the concrete pad. The GEOCEIVER Staton s a 0.05 meter brass dsk cemented n a drll hole n the northwest corner of a.8 x.8 meter concrete pad. The mark s on the center of three concrete pads and 3.0 meters west of the Astrodome. It s stamped: SITE 7 DISC. u u J Ü No references or azmuth marks were establshed. : f *NAl) 27 Geodetc coordnates and geod heght are based on values carred nto the Yuma area through the Precse Geodmeter Traverse. B-30

* *- ff*» «I II Wll>. h ö TION DESIGNATION SITE 7 DISC ATION YuM Provln R Grounds, AZ EVATION OF MARK ABOVE MSL (POlO) 85..97 METERS t DOPPLER RECEIVER GEODETIC SUMMARY SHEET STATION NO 023 POSITIONAL DATA REFERRED TO CeODKTIC COORDINATES (SURVEY) MODEL. Geocelver Center of Staton Mark SN»0035 HEIGHT OF TRACKING EQUIPMENT REF. PT. ABOVE STATION MARK 3.70 METERS DATUM NAD 927* u } * * N 33* 0' 2U':88 C - W 4* 22' 6'.'80 ASTRONOMICAL COORDINATES If?. 752fl u AJRCE 4» DOPPLER DATA L JTUM, NWL 9: UATUM NWL 9> * N 33* 0' 25'., 00 W 4* 22' 9V495 45.969 m! V -220')045.585 a> -487628.22 m 3456237.94 m a REMARKS * h= HEIGHT ABOVE THE ELLIPSOID Data s from satelltes 77 and 68 from 27 March - 9 Aprl 975. 54 passes were collected. 3 were used n the fnal soluton. 0 The NWL precse ephemers was held fxed n the soluton. The standard errors of the soluton are: ; o* - 0.03 sec ox - 0.076 sec o H».222 m * NAD 27 Geodetc Coordnates and geod heght are based on values carred nto the Precse Geodmeter Traverse. PREPARED BY: N0LLIE R# gopp DATE CHECKED BY; f/l (nure apmcr f rmqtttft u&9 rprcr.-.e tde) DATE NCY: DMAAC GSS 30 Apr 75 Capt Sdney M. Lounsberry 30 Apr 75 B-3

-" *. ' '.- «SURVEY SKETCH roject DMAAC 75-5 San Clemente Island, Calforna survev Traverse ^ ^.MOUND BLAIR ± - Ceocflvcr Staton - Pcture Ponts rrcrjr red bv U Gra PPO /^ - OeoHetc Staton, KM's (, UM's Date 9 Mar 975 B-32 Checked bv TSßt Martn O - Now Staton - Measured Dstance Date 3 Apr 975

'^L. Ulf... t k \ frroett f. DMAAC 75-5 SURVEY SKETCH CWIfTWI San Clemente Island, Calforna Traverse NORTH I.! : l I: A GEOCEIVER STA. oo3^ neo_< Ivor Staton - TMcture Ponts A - Hepdetlc Staton, RM's ^ lm's \ Lt. Crappo Üa Date 20 Mar 975 B-33 Checked bv TSgt Martn O - Now Staton - Measured Dsancc OatP 3 Anr 97S

> ' ' '. m.«rroett DMAAC 75-5 SURVEY SKETCH San Clemente Island, Calforna Mrvev Traverse 4 J RTH. ( BLAIR GEOCEIVER STA. 003 ^ - r.ckt vcr Staton - Pcture Ponts & TrTrrd l)v Lt r.rapno - Oo-ctc Staton, RM's f, BM's Uate 20 Mr ^75 B-34 Checked hv la&t Martn O - Now Staton - Measured DKtac- Date 3 Apr 97^

LJ, r NAME OF STATION; GEOCEIVER RTATTON 003 DESCRIPTION OF TRIANGULATION STATION STATE: gjuprntfl COUNTY; San Clemente Island CH IEFOF PARTY; Lt. GrappO YEAR: 975 DESCRIBED BY: TSgt Martn II NOTE, II HEIGHT OF TELESCOPE ABOVE STATION MARK METERS,! HEIGHT OF LIGHT ABOVE STATION MARK METERS. SURFACE-STATION MARK. DISTANCES AND DIRECTIONS TO AZIMUTH MARK, REFERENCE MARKS AND PROMINENT UNDERGROUND-STATION MARK OBJECTS WHICH CAN BE SEEN FROM THE GROUND AT THE STATION OBJECT BEARING DISTANCE NORTH BLAIR MOUND NW NW NW 3093.528 3A.473 2877.89 h'" 332 287 39 25 OH 4A :OUTI 39.26 56.767 58.060 Ü The staton s located on the eastern sde of San Clemente Island whch s approxmately 58 ar mles from San Dego, Calforna. The Island s reachable va commercal ar from ether San Dego or Long Beach. To reach the staton from the Operatons Buldng at the Naval Undersea Center n Wlson Cove, drve southeast along the road for about one block. Cross the man road and proceed south along asphalt road for 0.25 mles to a small drt road cutoff to the left (east). Proceed down ths drt road to the end of t at the FORACS Staton South Buldng. Off to the rght of the road by a meter s a concrete slab Into whch the staton s embedded. There are two statons on the concrete slab, the CEUCEIVKR staton beng the southernmost of the two. It s a brass dsk stamped CF.OCEIVER STA 003 975 DMAAC GSS. There are no reference marks. Refes to noes n tnaouals ol raoguuon and sar publcatons of nangulanon. tdrrcnon-anglc mrasutrd clockwse, rcltted to nnul stanonj 'To nrntut ngct uoly, when no trgonomefc Icveln. s beng done. B-35

' *: '* frojfct au W A DMAAC 75-5 ^ (Housn VICINITY SKETCH "I } Locaton San Clemente Island, Calforna ^ Mfr /.*, «/. A T - Steep H L LJ j I r 4 ^ * I«.-# ^ ctrtr OCEAN A ^ * \ Y* & N - ^ \ \ S.BIdg. W I.^.Concrete \ v ASIA.! HGEO^.^STAJOO^ S ;\ ^ v ' * up s - nl ^ / Ü t-t T & to M v. ^ _ X.^.^ ok "&'"' lt/-t't & C^ - neotevtr Staton - Pcture Ponts ^ - Heodetlc Staton, Rf^'s & BM's - New Staton - Vov-r Po.e-; Q - Tanks ^ >^~ Ft«nce IZZZ - Roads " Prer a^c< b V Lt. Gr rappo uatu 20 Mar 975 CrcKCfl by TSgt Martn B-36 ftate Apr l')75

*. * LOCATION v San Elemente GEODETIC SUMMARY GEODETIC SATELLITE OBSERVATION STATION k.a TRACKING EQUIPMENT REFERENCE POINT Center of Red Rng on Antenna TYPE OF STATION MARKER Rrasr. Dsk EQUIPMENT CEOCEIVF.R 00 AGENCY (CAST IN MARKI None STATION NO 003 OBSERVED BY (AGENCY) DMAAC/CSS PERIOD OF OCCUPATION 3 Mar 75-2 Mar 75 STAMPING ON MARK GKOCEIVER STA :''?n DMAAC/CSS 07: \ Ü 0 GEODETIC COORDINATES LATITUDE <#) S 3: 59' 55V76,. LONGITUDE (X) W 8 32' 5V57A DATUM NAD V.)27 SURVEYED BY (AGENCY) DMAAC CSS LOCATION OF SURVEY DATA DMAAC CSS ELEVATION OF MARK ABOVE MSL IGEOIO) A 5. 343- ^ METERS HEIGHT OF REFERENCE POINT ABOVE ELLIPSOID 7.265 ">, GE00ET,C AZIMUTH «amxbndk I FROM (OF SATELLITE OBSN. STA.I ELLIPSOID Clarke 866 NORTHING GRID COORDINATES 3652027.576 (Ml NORTHING HEIGHT OF GEOID ABOVE ELLIPSOID -30,000 " MEIERS t DATUM USED FOR GEOIO HEIGHTS NAD 927 (FT) (M) EASTING 3554.733 MI EASTING TO OBTAIN GRID AZIMUTH, ADD TO THE GEODETIC AZIMUTH TO OBTAIN GRID AZ. (ADO) (SUB.) TO THE GEODETIC AZIMUTH ELEVATION ESTABLISHED BY (AGENCY) DM^AC/CSS HEIGHT OF TRACKING EQUIPMENT RF ABOVE STATION MARKER PHOTOIDENTIFICATION BY AGENCY: WHERE FILED: '' N/A (OF SATELLITE OBSN. STA.I DATE (FT) IM) Mar 75 PT. ZONE ZONE GRID I'TM GRID ORDER VA METERS PREPARED BY (AGENCY) DATE B-37

OCSCIMFTION (WITH NIIF"Te RUCN'M LJ The Staton 's located on t!e eastern sde of San Clemente Island whch 's approxmately 38 ar mles from San Dego, Calforna, lt«sland s reachnble va commercal ar from ether San Dego or Innf Beach. Tn reach the staton from the Operatons Buldng at the Naval Undersea Center In Wlson Cove, drve southeast along the road for about one block. Cross the man road,jnd proceed south along asphalt road for n..?5. wles to a small drt road cutoff to the left (east). Proceed down ths drt road to the end of t at the FORACS Staton South Buldng. Off to the rght of the road by a meter Is a concrete slab nto whch the staton Is embedded. There are two statons on the concrete slab, the fltocfiver staton beng the southernnost of the two. It Is a brass dsk stamped CHOCEIVER STA 003 975 DMAAC CSS.. There art no reference marks. B-38

4 JSL_ *. ff;» t \' (ION DESIGNATION GEOCEIVER Sta DOPPLER RECEIVER GEODETIC SUMMARY SHEET 0C OC^TION S,n Elemente Island, Calf.. RATION OF MARK ABOVE MSL (SEOIO) *4 'ATUM 45.3-8 METERS t ^ STATION NO POSITIONAL DATA REFERRED TO Center of Staton Mark 003 MODEL GEOCEIVER SN j 003 HEIGHT OF TRACKING EQUIPMENT REF. PT. ABOVE STATION MARK.97 METERS GEODETIC COORDINATES (SURVEY) j NAD 927 N 32* 59' 55V76 W 8 32' Sl'.'STA 5.348 n )ATUM 0 V ASTRONOMICAL COORDINATES r 4> IA a ATUM * DOPPLER DATA T7.NVL-9D N 32' 59' ss'.^gs W 8 32* 55,., 64 2 ATUM X y ; h * r 2.537 m NWL-9D 558 979.429 m - 4 703 498.070 m 3 453 852.653 m ^E- 'RKS. HEIGHT ABOVE THE ELLIPSOID Data s from satelltes 68 and 77 from 3-2 March 975..58 passes were collected, 54 passes were used In the fnal soluton. The NWL nreclse ephemers was held fxed n the soluton. The standard errors of the fnal soluton are:.. 0.022 sec 0^ 0.057 sec 0 fl - 0.842 m R AREDBY: SOLLTE R. (OFF DMAAC GSS ENCY: DATE 30 Apt 75 CHECKED BY: lucdt)."! ff Mur«apmcr t tmqlmd u.-.f rrven.» td") I.oansbarry DATE! 30 AM 75 B-39

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.- '.. J^, ^».;^-,... Mjt,«- - ^'y~- jf&htm ^-- * ' e» - * l YUHA PHOTOGRAMMETRIC DATA BASE I ' I The Yuma Photogrammetrc Data Base s referenced to WGS 72. Any postonal data derved from It wll also be on WGS 72 unless approprate conversons are performed. The photographc source data conssts of 8 exposures collected durng three overflghts on 9 July 975. The approxmate scale of the photography Is :78,000. Cartographc source materal conssts of four Unted I States Geologcal Survey (USGS) 5 mnute quad sheets wth a :62,500 scale - Red Hll, Red Bluff Mountan, Castle Dome and Laguna - and nne USGS 7.5 mnute quad sheets wth a :24,000 scale - Hdden Valley, Pcacho SW, Pcacho, Pcacho Peak, Lttle Pcacho Peak, Bard, Imperal Reservor, Laguna Dam and Dome. Geodetc control s provded by 3 photo dentfable survey stes I I I whch served as prmary control n the data base adjustment. These stes are those dentfed by numbers 3, 6-5, 24 and 27 n Fgure of ths Report. An evaluaton of the achevable accuracy for postons derved from the photogrammetrc data base was made by comparng dfferences between the ntal and the derved postons for the 3 geodetc ponts used for control. Ths evaluaton yelded horzontal and vertcal accuraces of 3 m at 90% assurance. Ths s equvalent to a horzontal Crcular Standard Error of approx- mately.5 m and a vertcal standard error of approxmately 2 m. These accuracy fgures do not Include the uncertanty nvolved n re- latng the data base coordnates to WGS 72 or the uncertanty of C-/

*.' ^ '-.- r WGS 72 wth respect to the earth's center of mass. Data base explotaton requres that the requestor provde to DMAAC an approxmate geographc coordnate for each pont along wth an aeral photograph Identfyng the exact pont and/or ponts Ü U to be postoned. The Identfcaton photograph should have suffl- I dent detal to facltate pont Identfcaton. DMAAC wll provde the requestor the geodetc lattude, longtude and heght of each pont wth respect to WGS 72. UTM coordnates can also be provded upon request. l! I I. J C-2

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