UNION COUNTY PUBLIC WORKS INVITATION FOR BID NO HAZEN AND SAWYER PROJECT NO

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2 A. SCOPE UNION COUNTY PUBLIC WORKS INVITATION FOR BID NO HAZEN AND SAWYER PROJECT NO TWELVE MILE CREEK WASTEWATER TREATMENT PLANT 7.5 MGD EXPANSION ADDENDUM NO. 2 This Addendum No. 2 consists of twelve (12) pages and two (2) attachments referenced to the Contract Drawings. This addendum covers responses to requests for interpretations or clarifications submitted by plan holders and additions and changes to the Contract Documents as described below. B. SPECIFICATIONS SECTION Page Paragraph 1.04.A.1: Delete text in its entirety and replace with the following text: North Carolina State Building Code SECTION Page Paragraph 2.02.G: Add the following text: Galvanized guide angles shall be field painted or may be factory coated to match the curtain. SECTION Add Section Toilet and Bath Accessories attached to this addendum. SECTION Page Paragraph 1.03.A.8: Delete the text 2.08.K and replace with: 2.08.M Page Paragraph 1.05.A: Delete the text ITT (aka WEDECO) Duron model and system and replace with: Xylem Water Solutions USA, Inc. s Wedeco Duron model and system Page 2 of 12 Addendum No. 2

3 Page Paragraph 1.07.G: For Number of UVT Detection Systems ; delete two occurrences of 1 per channel and replace with: 1 Page Paragraph 2.01.A.3: Delete text in its entirety and replace with: (NOT USED) Page Paragraph 2.04.I.3: Delete the 1 st sentence in its entirety and replace with: A redundant wiper mechanism, whether electric, hydraulic, or pneumatic, shall be provided. Page Paragraph 2.04.I.6: Delete text its entirety and replace with: The wipers shall be replaceable without having to dismantle the wiper drive system or disassemble the module structure. Page Paragraph 2.05.H: Add the following text at the end of the text: or factory calibrated Page Paragraph 2.08.D: Delete text in its entirety and replace with: (NOT USED) [For clarification: Transformers shall be provided under Division 16 scope as shown on the Drawings. 4-wire WYE configuration is being provided to equipment as shown on the Drawings.] Page Paragraph 2.08.G: Delete the word tray and replace with: trench Page Paragraph 2.08.I: Delete text in its entirety and replace with: (NOT USED) Page Paragraph 2.08.M.1: Delete the 3 rd sentence in its entirety. Page Paragraph 2.08.M.1: In the 5 th sentence, delete the text 20,000 A and replace with: 35,000 A Page Paragraph 2.08.M.1: In the 5 th sentence, delete the text output of the transformer and replace with: primary side of the transformers Page 3 of 12 Addendum No. 2

4 Page Page Paragraph 2.08.M.7: Delete text in its entirety. Paragraph 2.09.C.1: Delete the text 15-inch. [For clarification: Operator interface may be provided in accordance with Section ] Page Paragraph 2.09.C.3: Delete the words red and amber. SECTION Page Paragraph 2.06: Delete text in subparagraphs A G in its entirety and replace with: A. Access platform(s) shall be provided as shown on the Drawings. Equipment manufacturer shall submit proposed modifications to platforms, railing, stairs, etc. to coordinate equipment maintenance access and to coordinate any equipment items that may conflict with platform structure. Equipment submittal shall be approved by Engineer including any recommended proposed platform modifications prior to submittal of platform design for Engineer approval. SECTION Page Paragraph 2.06: Delete text in subparagraphs A G in its entirety and replace with: A. Access platform(s) shall be provided as shown on the Drawings. Equipment manufacturer shall submit proposed modifications to platforms, railing, stairs, etc. to coordinate equipment maintenance access and to coordinate any equipment items that may conflict with platform structure. Equipment submittal shall be approved by Engineer including any recommended proposed platform modifications prior to submittal of platform design for Engineer approval. SECTION Page Paragraph 1.01.A.3 and 1.01.A.4: Delete text in its entirety and replace with: (NOT USED) Page Paragraph 1.06.C: Add the following text: Where the erector does not have AISC certification, the erector shall have a minimum of 10 years of experience erecting pre-engineered metal buildings and submit a list of projects representative of their experience over the ten year period. Page Paragraph 2.05: Delete paragraphs A E in their entirety and replace with: (NOT USED) Page 4 of 12 Addendum No. 2

5 Page Paragraph 2.06.B: Delete the text 30 and replace with: 19 Page Paragraph 2.06.D: Delete paragraph in its entirety and replace with: (NOT USED) Page Paragraph 2.07: Delete paragraphs A E in their entirety and replace with: (NOT USED) SECTION Page MOV-89211/89212/89213/89214 entries in table: Revise Operator Type to: Open/Close (3) [For clarification: Modifying note reference.] SECTION Page Paragraph 2.06.D: Delete the 2 nd sentence in its entirety and replace with: All configuration and programming software necessary to implement this functionality shall be provided on the HMI Server operator workstations specified in Section Control and Information System Scope and General Requirements. SECTION GRIT REMOVAL FACILITY: Add the following I/O: Grit Sampler Program Complete DI PLC-3 YN Grit Sampler Pump Error DI PLC-3 YAA Grit Sampler Distributor Jammed DI PLC-3 YAB Grit Sampler Bottle Full DI PLC-3 YAC EFW PUMP STATION: Add the following I/O: Cascade Aerator Sampler Program Complete DI PLC-7A YN Cascade Aerator Sampler Pump Error DI PLC-7A YAA Cascade Aerator Sampler Distributor Jammed DI PLC-7A YAB Cascade Aerator Sampler Bottle Full DI PLC-7A YAC Page 5 of 12 Addendum No. 2

6 C. DRAWINGS Drawing EC16 Add the following text: 2. Area on this drawing may be used to stockpile excavation soil from the site deemed by the Engineer to be suitable for use as backfill around structures or other site fill purposes. Any excavation rock or soil deemed by the Engineer to be unsuitable for use on the site shall be removed from the site. Drawing M6 Delete two occurrences of the text Bid Alternate. Delete the text In-Plant Pump Station and Existing Metal Salt Feed and replace with the text: Filtrate Pump Station Drawing M13 Refer to call-out for Manhole No. 21A : Delete the text See Note 3 and replace with the text: See Note 4 Drawing M14 Detail 4: Add callout and leader to access hatch on top of precast vault: 3-0 x 3-0 Hinged AL Access Hatch Drawing M15 Note 3: Add the following text at the end of the note: [Applies to all new SS manholes and piping.] Drawing M226 Detail 1: Change detail title to: Foul Air Pipe Support on Pier Drawing M400 Add the following text: 3. Provide a split sleeve coupling (Victaulic Type 233, or equal) for each buried BFV. Carbon steel couplings shall be coated equivalent to piping in Section Page 6 of 12 Addendum No. 2

7 Drawing M711 Details 2 and 3: Add the following text as a note: 3. Existing and proposed platform metal is hot dip galvanized steel. Upper platform grating is 6-0 x 3-0. Drawing M722 Add the following text: 4. See Drawing M712 / Note 2. Drawing S1 Note C-17: Add the following sub-note text and table: D) Adhesive Anchor and Dowel Schedule: ADHESIVE ANCHOR AND DOWEL SCHEDULE DOWEL SIZE / ANCHOR DIAMETER (in) EMBEDMENT DEPTH (in) PROOF TEST LOAD (kips) # # # # # # /2 2 1/ / / / ¾ ¾ ¾ Drawing S205 Section A: Refer to inside of grit tank: For Lower Limit of MIC Coating ; delete text: El and replace with: El Drawing S207 Section N: Add the following text at the end of the single NOTE associated with this detail: Alternate HSS sizes may be submitted for approval Page 7 of 12 Addendum No. 2

8 Drawing S313 Section K: For 1/2 Ø ADH 12 OC STAGGERED ; add the text: WITH 4 EMBED Drawing S363 Section K: For 1/2 Ø ADH 12 OC STAGGERED ; add the text: WITH 4 EMBED Drawing S402 Add the following text: 3. C5 channels indicated for roof framing shall be C5X9 channels. Drawing S404 Detail 1: Delete HSS4x2x5/16 and replace with the text: HSS4x2x1/4 Detail 4: Delete 5/8 Ø THREADED ROD and replace with the text: 1/2 Ø ADHESIVE 2 1/2 EMBED Detail 4: Delete L3X2X1/4 BETWEEN BEAMS and replace with the text: L3X2X1/4 W/ 1/2 Ø ADHESIVE 12 OC BETWEEN BEAMS Drawing S601 Delete Notes and numbering in its entirety. Drawing S603 Add the following text as Notes : NOTES: 1. METAL BUILDING SHALL BE DESIGNED AND PROVIDED BY METAL BUILDING MANUFACTURER, SEE SPECIFICATION SECTION DESIGN FOR GROUND SNOW LOAD, WIND LOAD, AND SEISMIC LOAD IN ACCORDANCE WITH GENERAL STRUCTURAL NOTES ON DRAWING S1. FOR WIND, THE BUILDING SHALL BE CONSIDERED TO BE OPEN. IN ADDITION, DESIGN SHALL INCLUDE 30 PSF LIVE LOAD AND 10 PSF COLLATERAL LOAD Page 8 of 12 Addendum No. 2

9 3. LATERAL SUPPORT FOR BUILDING SHALL UTILIZE EITHER PORTAL FRAMES, PORTAL BRACE FRAMES, OR CROSS BRACING. CROSS BRACING MAYA BE PROVIDED ALONG COLUMN LINES A AND B BETWEEN COLUMN LINES 2 AND 4 ONLY. 4. THE METAL BUILDING FOUNDATION SHALL BE AS SHOWN ON THE CONTRACT DOCUMENTS. THE CONTRACTOR SHALL COORDINATE ANCHOR ROD REQUIREMENTS, INCLUDING ADDITIONAL REINFORCEMENT, WITH THE METAL BUILDING MANUFACTURER. THE ENGINEER SHALL VERIFY THE FOUNDATION CAPACITY FOR THE REACTIONS PROVIDED BY THE METAL BUILDING MANUFACTURER. FOUNDATION DIMENSIONS SHOWN ARE FOR BIDDING PURPOSES AND MAY VARY DEPENDING ON MANUFACTURER SELECTED. FINAL DIMENSIONS SHALL BE VERIFIED AFTER METAL BUILDING MANUFACTURER S FINAL DESIGN HAS BEEN APPROVED. 5. DUE TO SERVICEABILITY CONSIDERATIONS, BUILDING MOVEMENT SHALL BE CONSIDERED IN THE DESIGN OF NON- STRUCTURAL COMPONENTS AND SUBJECT TO THE LIMITATIONS IN THE TABLE BELOW. ELEMENT DEFORMATION LIMIT LOADING METAL PANELS / PERPENDICULAR H/ YEAR WIND BARE FRAME TO WALL METAL PANELS / HORIZONTAL L/ YEAR WIND GIRTS / COLUMNS DEFLECTION BARE FRAME RACKING H/ YEAR WIND SPANDRELS VERTICAL DEFLECTION 3/8 MAXIMUM DL PRIOR TO CLADDING SPANDRELS VERTICAL L/480 < 5/8 TOTAL DL DEFLECTION MAXIMUM SPANDRELS VERTICAL L/360 < ½ 0.5 X LL DEFLECTION MAXIMUM SPANDRELS VERTICAL DEFLECTION L/600 < 3/8 MAXIMUM DL INCLUDING CLADDING WEIGHT ROOF MEMBERS VERTICAL DEFLECTION L/240 MAXIMUM 0.5 X LL OR SNOW LOAD ROOF PANELS VERTICAL DEFLECTION L/240 LL 6. THE CONTRACTOR SHALL PROVIDE COMPLETE FABRICATION AND ERECTION DRAWINGS FOR CONSTRUCTION OF THE PREENGINEERED BUILDING WHICH SPECIFY THE REQUIRED MATERIALS, GRAVITY AND LATERAL LOADS, SIZES, AND LOCATIONS OF ALL STRUCTURAL ELEMENTS INCLUDING, BUT NOT LIMITED TO, BEAMS, COLUMNS, PORTAL FRAMES, JOISTS, PURLINS, GIRTS, BRACES, ARCHES, AND WALL AND ROOF PANELS. PROVIDE COMPLETE DETAILS WHICH CLEARLY INDICATE REQUIRED CONNECTIONS BETWEEN ALL STRUCTURAL FRAMING COMPONENTS INCLUDING ANCHORAGE TO FOUNDATION TO ADEQUATELY RESIST ALL APPLICABLE Page 9 of 12 Addendum No. 2

10 Drawing S613 DESIGN LOADS INCLUDING GRAVITY, WIND, AND SEISMIC. DRAWINGS SHALL ALSO SPECIFY THE REQUIRED SIZE, QUANTITY, AND LOCATIONS OF BUILDING ANCHOR BOLTS. Add the following text as Notes : NOTES: 1. See notes on Drawing S603. Drawing S750 Add the following text: 2. Column reinforcing shall be 12 #8 bars with #4 Refer to Standard Detail Drawing S755 Detail 3: Delete the text: PL 1/4"x12 x12 and replace with the text: PL 1/4"x12 10 MAX Drawing S758 Beam Schedule: Delete the table in its entirety and replace with the table in Attachment 1 to this addendum. Drawing S951 Delete numbering in its entirety and add the following text: 1. See S204 / Detail 3 for connection of roof joists to CMU walls. Drawing A1 Door Schedule: Doors 200-A, 200-B, 200-C, 200-D, and 202-A: Delete text in column Remarks. [For clarification: All doors in project shall be insulated per specifications.] Door Schedule: Doors 200-C, 200-D, 400-B, 750-C, 751-A, and 751-D: Delete text in columns Frame / Matl and Door / Matl and replace with: GALV [For clarification: Rollup doors shall be galvanized steel per Section ] Page 10 of 12 Addendum No. 2

11 Note 2: Add the following text: Wall thickness shall be 1-2 from face of exterior wall to interior face. Dimensions indicated in this note are nominal. Drawing A207 Section F1: Delete the text: 1/2 Stainless Steel Plate. Drawing A754 Add the following text: 2. Epoxy counter top shall be provided for laboratory casework, Elevation F and solid surface countertop shall be provided for desk area, Elevations D and E. 3. Plumbing fixtures and sink shall be provided in accordance with Section Section D: Delete the text: Steel. [For clarification: Overhead cabinets shall be wood per Section ] Drawing P752 Fixture Branch Schedule: Fixture Number P3: Delete text in columns Manufacturer, Model Number, and Accessories and replace with the text: See Section Drawing E650 Composite sampler riser diagram: Add a second conduit tag under I that reads: C Drawing E924 Conduit C : Delete the text 6#14, #14 GND and replace with the text: 14#14, #14 GND Drawing E924 Conduit C : Replace the unused row with the following: C /4" CPB-CA (AT CASCADE AERATOR) COMPOSITE SAMPLER (AT CASCADE AERATOR) 8#14, #14 GND Page 11 of 12 Addendum No. 2

12 Drawing E955 Grit Facility composite sampler riser diagram: Add a second conduit tag under I that reads: C Drawing E958 Conduit C : Delete the text 4#12, 56#14, #12 GND and replace with the text: 4#12, 64#14, #12 GND Drawing E958 Conduit C : Replace the unused row with the following: C /4" CPB-GRF1 GRIT FACILITY COMPOSITE SAMPLER 8#14, #14 GND Drawing D5 Delete Standard Detail R. [Clarification: No ribbon curb in project.] D. CLARIFICATIONS 1. Pre-Negotiated Equipment Item pricing by Siemens: a. Pricing does not include sales tax. b. Terms and conditions in proposal shall apply unless negotiated otherwise between Bidder and Supplier. 2. Curb is only required along asphalt pavement where specifically shown on Civil drawings. 3. Building roof monitors shall have same slope as main roof. 4. Building translucent panels shall be provided to coordinate to dimensions shown in building elevations. - END OF ADDENDUM No Page 12 of 12 Addendum No. 2

13 SECTION TOILET AND BATH ACCESSORIES PART 1 -- GENERAL 1.01 THE REQUIREMENT A. Furnish and install toilet and bath accessories as shown on the Drawings and specified herein SUBMITTALS A. In accordance with the procedures and requirements set forth in Section Submittals, submit the following: 1. Manufacturer's data QUALITY ASSURANCE A. Coordinate with other work to avoid interference and to assure proper operation and servicing of accessory units. PART 2 -- PRODUCTS 2.01 ACCEPTABLE MANUFACTURERS A. The following manufacturers are approved for use. 1. American Specialties Inc. 2. Bobrick Washroom Equipment, Inc. 3. Bradley Corp. 4. McKinney Parker 2.02 MATERIALS A. Provide the following (Model numbers are Bobrick Washroom Equipment, Inc. numbers and are used for convenience only). 1. Surface Mounted Toilet Tissue Dispenser for Two Rolls At each water closet - Model B-686, Type 304 -stainless, polished finish, concealed stainless steel wall plate. 2. Surface Mounted Paper Towel Dispenser and Disposal: Satin finish stainless steel, 12 gallon removable receptacle. Dispenses 600 C-fold, 800 multifold, or 1100 single fold towels. Model B-3949 with skirt BR /10800:6/21/ TMWWTP 7.5 MGD EXPANSION

14 3. Wall Mirrors: One (1) at each lavatory - stainless steel angle frame mirror, Model B Corners shall heliarc welded, ground and polished smooth. No. 1 quality, ¼ (6mm) select float glass mirror electrolytically copper-plated; guaranteed against silver spoilage for 15 years. Provide 1/8 inch (3mm) thick, water-resistant, shockabsorbing padding and 20 gauge galvanized steel back. Concealed mounting. Size as shown on Drawings. 4. Mop Holder: 18 gauge, 304 stainless steel shelf, hooks and anti-slip mop holders with spring loaded rubber cam, 34 inch, Model B-239 x Grab Bars: 1-1/2 inch diameter, 18 gauge, stain finish, Type 304 stainless steel, concealed mounting with set screws. Joints and supports shall be contour cut and heliarc welded. Length shall be as indicated on the Drawings, and shall comply with the requirements of the Americans with Disabilities Act. 6. Surface Mounted Soap Dispenser: 304 stainless steel back and body with satin finish. Capacity of 40 fluid ounces. Corrosion-resistant valve and dispenser. Unbreakable refill window. Vandal resistant. Large, locked, hinged, stainless steel filler top. Model B PART 3 -- EXECUTION 3.01 INSPECTION A. Examine substrates, previously installed inserts and anchorages necessary for mounting of toilet accessories and other conditions under which installation is to occur, and notify the Contractor of conditions detrimental to proper completion of work. Do not proceed until unsatisfactory conditions have been corrected in a manner acceptable INSTALLATION A. Install in accordance with manufacturer's instructions, using fasteners which are appropriate to substrate and recommended by the manufacturer of the unit. Install plumb and level, firmly anchored in locations indicated. B. Install mirrors with back frame concealed fasteners. C. Mounting heights shall comply with the American with Disabilities Act ADJUST AND CLEAN A. Adjust for proper operation of that mechanisms function smoothly. B. Clean and polish exposed surfaces after removing protective coating. - END OF SECTION /10800:6/21/ TMWWTP 7.5 MGD EXPANSION

A. It is preferred that all submittals to be submitted electronically in PDF format.

A. It is preferred that all submittals to be submitted electronically in PDF format. June 20 2013, Rev 00 10 2800 Toilet, Bath, and Laundry Accessories PART 1. GENERAL 1.01 This Section includes: A. Toilet room accessories: 1.02 Submittals 1. Grab bars 2. Metal framed mirrors 3. Sanitary