(Larry D. Svitak, PE) License No

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1 ADDENDUM NO. engineering design initiative north 5 th Street minneapolis, mn 55 Phone: () AX: () or Project: Nobles County Government Center AHU- Replacement EDI Project No.: Owner: Nobles County 35 Tenth Street Worthington, MN. I hereby certify that this plan, specification, or report was prepared by me or under my direct supervision and that I am a duly licensed Professional Engineer under the laws of the State of Minnesota. Date: March 0, 08 (Larry D. Svitak, PE) License No. 50 This Addendum is added to and shall become a part of the Contract Documents dated ebruary 8, 08. Bidders shall acknowledge receipt of this Addendum in their Bid orm. ailure to comply may result in rejection of the Bid. NOTE: THE BID DATE HAS NOT BEEN CHANGED. THE BID TIME HAS NOT BEEN CHANGED. CHANGES TO THE PROJECT MANUAL: None. CHANGES TO THE DRAWINGS: Drawing M. IRST LOOR DUCTWORK DEMOLITION PLAN. Updated drawing to reflect AHU removal only. Housekeeping pad to remain.. Added Keynote 5 for clarity. Drawing M3. IRST LOOR DUCTWORK PLAN. Updated housekeeping pad extension extents.. Modified keynote. Drawing M. ELEVATIONS & SECTIONS. Updated pad modifications on elevation views,.. Updated isometric views of shipping splits for each unit in 3,. GENERAL ITEMS:. Pre-Bid Sign-In Sheet attached.. The door to the garage will be built to accommodate the largest shipping split size. 3. Attached is new housekeeping curb extensions for R- and AHU-.. Schedule: To minimize occupant disruptions, the Contractor will be allowed to disable the AHU and R at 5:00 on a Thursday and must have the supply fan operational to introduce outdoor air into the building by 8:00 am the following engineering design initiative Addendum No

2 Wednesday. The building will be available to the Contractor that entire time from Thursday 5:00 pm until Wednesday 8:00 am. The remaining work can be executed during normal business hours. The actual weekend shall be determined based upon weather conditions but is anticipated to occur between mid-october and the end of October. APPROVED MANUACTURER SUBSTITUTIONS: Naming below does not guarantee approval, substitutions must meet requirements of the specifications and plans. Section: Item: Manufacturer: Modular Central-Station Air-Handling Units York END O ADDENDUM NO. engineering design initiative Addendum No. -

3 engineering design initiative north 5 th street Minneapolis, MN PRE-BID CONERENCE SIGN-IN SHEET Project: Nobles County Government Center AHU- Replacement Meeting Date: March, 08 edi Project Number: A/E irm: EDI Contractor Representative Representative s Title Company Name Phone Larry Svitak Mechanical Engineer EDI lsvitak@edilimited.com Dan Shortall PM Schwickerts danshortall@schwickerts.com Dwayne Christoffels PM Midwestern Mechanical dewey@mwmech.com Justin Davis PM Javens Mechanical justind@javensmech.com Scott Sedivy PM NAC Mech & Elec ssedivy@nac-hvac.com Cory Bomgaars PM/Mech BTU, Inc Btu85@outlook.com LeWayne P. Tri-State General Const Lewayne@tristategc.net Cody Mortier Bisbee Plumbing and Heating cmortier@bisbeeph.com Shawn Nelson SWMHP shawnnelson@swmhp.org

4 GENERAL NOTES engineering design initiative north 5th street minneapolis, mn 55 () 33-55ph () fax - BOILER ROOM 3/ "Ø UP THROUGH LOOR /8 8/50 30/ 7' - " 50/ 3/8 0/ UP THROUGH LOOR 3/ UP THROUGH LOOR UP /8 A. IELD VERIY EXISTING CONDITIONS PRIOR TO COMMENCING WORK. IELD VERIY LOCATIONS AND SIZES O DUCTWORK, PIPING AND EQUIPMENT TO BE REMOVED. B. NOTIY ENGINEER O ANY DISCREPANCIES. C. CUT AND PATCH EXISTING SURACES ( WALLS, LOORS, AND/OR CEILINGS) AS REQUIRED TO PERORM WORK. PATCHING SHALL MATCH SURROUNDING SURACES. D. CONTRACTOR TO BE RESPONSIBLE OR REMOVING ALL CONSTRUCTION DEBRIS AND SALVAGED MATERIAL ROM SITE. PLAN NOTES EXISTING RETURN AN UNIT TO BE DISCONNECTED AND REMOVED. EXISTING TO BE DISCONNECTED AND REMOVED. EXISTING SUPPLY AN UNIT TO BE DISCONNECTED AND REMOVED. CONTRACTOR TO REMOVE HEATING WATER COIL, CHILLED WATER COIL, ILTER RACK, AND ASSOCIATED CONNECTION DUCTWORK AS SHOWN. EXISTING TO REMAIN. I hereby certify that this plan, specification or report was prepared by me or under my direct supervision and that I am a duly Licensed Professional Engineer under the laws of the State of Minnesota Larry D. Svitak Reg. No. 50 Project Number: Date: Drawn By: Checked By: Date0/8/ /8/08 AJR LDS # Description Date ADD #0 03/0/8 3 EXISTING BOILER COMBUSTION AIR DUCTWORK TO REMAIN. 3 0"Ø 0"Ø 0 3/ /8 3 8/8 80/78 0/8 5 3/ RM. 3 8/ 30/8 5/3 /30 /30 0/ /8 0/ EXISTING SET O, 8X3 RELIE AIR DAMPER AND LOUVER TO REMAIN. 5 EXISTING 0X8 OUTSIDE AIR DUCTWORK TO BE DISCONNECTED AND REMOVED BACK TO ELBOW. EXISTING CEILING AN TO REMAIN. 7 EXISTING VD AND AN CONTROLS TO BE DISCONNECTED AND REMOVED. 8 EXISTING CONTROL PANEL TO REMAIN. EXISTING HEATING WATER BOILER. 0 EXISTING RELIE AIR DAMPER, AND IRE DAMPER TO REMAIN. DISCONNECTED AND REMOVED EQUIPMENT AND NEW EQUIPMENT TO UTILIZE NEW ' ARCH DOOR. DOOR IS PROVIDED AS WORK UNDER A SEPARATE CONTRACT. CONTRACTOR SHALL COORDINATE WITH CONTRACTOR PERORMING THE SEPARATE CONTRACT. EXISTING RETURN AN VD AND ASSOCIATED CONTROLS TO BE DISCONNECTED AND REMOVED. 3 EXISTING IRE DAMPER COMPONENTS TO BE DISCONNECTED AND REMOVED. DAMPER SLEEVE TO REMAIN. PORTION O THIS WALL WILL BE REMOVED AS WORK UNDER A SEPARATE CONTRACT. THE REMOVED WALL SHALL PROVIDE ACCESS OR REMOVAL O RETURN AN, AND INSTALLATION O NEW RETURN AN. 5 EXISTING HOUSKEEPING TO REMAIN. REER TO NEW PLAN OR EXTENSION. NOBLES COUNTY GOVERNMENT CENTER - AHU- REPLACEMENT WORTHINGTON, MN 0/0 M. 5 /8 / 8 M. 7 - RM. 3 IRST LOOR - DUCTWORK DEMOLITION PLAN IRST LOOR - DUCTWORK DEMOLITION PLAN /" = '-0" M. 0 ' ' 8' M. EDI#7-075

5 GENERAL NOTES engineering design initiative north 5th street minneapolis, mn 55 () 33-55ph () fax /8 3/ A. DUCT SIZES SHOWN ON PLANS ARE CLEAR INSIDE DIMENSIONS WHERE DUCTWORK IS INTERNALLY LINED. INCREASE DIMENSIONS O SHEET METAL ACCORDINGLY. B. ALL TRANSER DUCTS SHALL BE INTERNALLY LINED WITH " ACOUSTIC LINER. I hereby certify that this plan, specification or report was prepared by me or under my direct supervision and that I am a duly Licensed Professional Engineer under the laws of the State of Minnesota UP C. TEMPERATURE CONTROL CONTRACTOR SHALL URNISH ALL MOTORIZED DAMPERS OR INSTALLATION BY CONTRACTOR, UNLESS NOTED OTHERWISE. Larry D. Svitak Reg. No. 50 Date0/8/08 M - BOILER ROOM 3 8/50 50/ 3/8 /8 PLAN NOTES PROVIDE PERSON-SIZED ACCESS DOOR TO RELIE PLENUM. ACCESS DOOR SHALL MATCH DUCT CONSTRUCTION AND LINER. PLENUM SHALL BE DOUBLE WALL DUCTWORK WITH PERORATED LINER. PLENUM BASE SHALL INCLUDE CHANNEL TO SUPPORT HUMAN WEIGHT. PLENUM TO BE SUPPORTED BY LOOR. BALANCING CONTRACTOR TO SET MINIMUM DAMPER POSITION AIRLOW SETPOINT O 0 CM. 3 BALANCING CONTRACTOR TO SET REGISTER AIRLOW TO 300 CM. Project Number: Date: Drawn By: Checked By: /8/08 AJR LDS # Description Date ADD #0 03/0/8 8/ IN HIGH EXTENSION. CONTRACTOR TO PROVIDE VIBRATION NEOPRENE WHEN MOUNTING EQUIPMENT TO. EXTENSION TO BE REINORCED WITH REBAR WHEN CONNECTING TO EXISTING. M /00 8/8 R- 8/8 5/70 00/ 0/ 3/0 5 - RM. 30/8 5/3 /30 0/ /8 5 EXISTING TEMPERATURE CONTROL PANEL. EXISTING HEATING WATER BOILER. 7 EXISTING BOILER COMBUSTION AIR DUCTWORK. 8 EXISTING BOILER LUE DUCTWORK. EXISTING CEILING AN. 0 SINGLE-WALL RETURN DUCT WITH DUCT LINER. NOBLES COUNTY GOVERNMENT CENTER - AHU- REPLACEMENT WORTHINGTON, MN / M. M. ' - 0" AHU- 5 /8 - RM. 3 IRST LOOR - DUCTWORK PLAN IRST LOOR - DUCTWORK PLAN /" = '-0" M3. 0 ' 8' ' M3. EDI#7-075

6 engineering design initiative north 5th street minneapolis, mn 55 () 33-55ph () fax I hereby certify that this plan, specification or report was prepared by me or under my direct supervision and that I am a duly Licensed Professional Engineer under the laws of the State of Minnesota Larry D. Svitak Reg. No. 50 Date0/8/08 Project Number: Date: Drawn By: Checked By: 0/8/08 AJR LDS # Description Date ADD #0 03/0/8 3 ISOMETRIC VIEW - AHU- NO SCALE M. ISOMETRIC VIEW - R- NO SCALE M. NOBLES COUNTY GOVERNMENT CENTER - AHU- REPLACEMENT WORTHINGTON, MN " HWR " HWS " CHWR " CHWS /30 Level 3' - 0" " HWS 30/8 " HWR " HWR 00/8 /" HWR /" HWS 3" CHWR 3" CHWR Level 3' - 0" 3/0 PROVIDE CONCRETE BLOCKING AS NECESSARY 8/00 /00 /0 EXISTING AHU- " HWS 0/ NEW " EXTENDED 0/ / EXISTING SUMP Level 0' - 0" / EXISTING " HWR /8 R- 8/8 NEW EXTENDED " 70/5 8/8 DOUBLE WALL RETURN DUCT WITH " PERORATED LINER AHU- SINGLE WALL RETURN DUCT WITH " LINER " CHWR " CHWS /" HWS /" HWR Level 0' - 0" NEW EXTENDED " ELEVATIONS & SECTIONS ELEVATION PLAN - AHU- /" = '-0" M. 0 ' ' 8' ELEVATION PLAN - R- /" = '-0" M. 0 ' ' 8' M. EDI#7-075