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Home My WebLink AboutAddendum #2_022015Page 1 of 4 ADDENDUM # 2 CITY OF CAPE CANAVERAL BID #2015-05 CITY OF CAPE CANAVERAL LIFT STATIONS NOS. 6&7 IMPROVEMENTS February 20, 2015 All contents of this addendum shall be incorporated into the solicitation documents and the ensuing contract with the awarded contractor. •Questions will be accepted up to seven days prior to the bid opening. The last day questions and RFI’s for this bid was February 17, 2015. No further questions or RFI’s are now accepted. • Addendums may be issued up to 72 hours prior to the bid opening due time. Brief addenda may be issued between 72 hours and 24 hours before Bid time by e-mail or facsimile. It is the responsibility of all potential bidders to ensure they have received all addendums issued. • All documents pertaining to this solicitation may be obtained free of charge on CD from the City of Cape Canaveral, City Clerk’s Office, 105 Polk Avenue, Cape Canaveral, FL 32920. This addendum is to revise pump information and clarify the manhole coating requirements. A.CLARIFICATION: 1.The correct facsimile number to reach Tetra Tech has been revised. Please refer to Specification Changes Section B below. 2.The pumps for both stations have been revised. Please refer to Specification Changes and Drawing Changes in Sections B and C below. 3.Manholes within 100 linear feet of pipe from wet well shall be lined per Section 09920. Manholes greater than 100 linear feet of pipe from wet well shall be lined per Section 09900. Please refer to Specification Changes in Section B below and Drawing Changes in Section C below. B.SPECIFICATION CHANGES: 1.In Section 00020 Notice to Bidders Delete Paragraph 18 and replace with the following: “Inquiries concerning this proposal should be directed to Tetra Tech via facsimile at (407) 839-3790, or e-mail at rasesh.shah@tetratech.com. The subject line of all inquiries shall state “CITY OF CAPE CANAVERAL LIFT STATIONS NOS. 6 & 7 IMPROVEMENTS – BID INQUIRY”. Page 2 of 4 2.Delete Table 11208-A “PUMP PERFORMANCE SCHEDULE” in its entirety and replace with the following: Parameter LS No. 6 Pumps(1)LS No. 7 Pumps(2) Number of Pumps 2 2 Pump Type Standard Submersible Standard Submersible Type of Drive Constant Speed Constant Speed Design Capacity per Pump, GPM/Ft. TDH 580 / 29.5 610/31.5 1,080 / 61.4 1,058/59.5 Minimum Shut Off Head, Ft. 68 54 126 110 Run Out-Head, Ft. 7 9 37 39 Minimum Capacity at Run- Out Head, gpm 960 1,200 1,480 1,510 Minimum Efficiency at Design Capacity 64% 66% 72% 69% Minimum Size Solids, Passing, In. 3 3.9 3 3.9 Minimum Discharge Size, In. 4 6 4 6 Minimum Horsepower Per Pump, HP 7.5 10.1 25 25 Basis of Design Pump MFR & Pump Model/Impeller Flygt Model NP 3127 Series / 195 mm ABS Model XFP 150E- CB1-PE75/4 190mm Flygt Model NP 3171 Series / 256 mm ABS Model XFP 150G-CB1- PE185/4 250mm Notes: 1. System curve points under minimum TDH conditions are presented below. Pump operation at full speed shall not result in cavitation, excessive vibration, or other undesirable conditions at the minimum TDH conditions specified below. The minimum TDH conditions will occur when there is 1 foot of liquid above the pump volute. Minimum TDH System Curve Data for Lift Station No. 6 Pumps Flow (gpm) TDH (ft.) 0 12 300 17 600 30.5 800 44 TABLE 11208-A (Cont'd.) PUMP PERFORMANCE SCHEDULE Page 3 of 4 2. System curve points under minimum TDH conditions are presented below. Pump operation at full speed shall not result in cavitation, excessive vibration, or other undesirable conditions at the minimum TDH conditions specified below. The minimum TDH conditions will occur when there is 1foot of liquid above the pump volute. Minimum TDH System Curve Data for Lift Station No. 7 Pumps Flow (gpm) TDH (ft.) 0 32.3 600 39.1 1100 54.2 1250 60.4 3.In Section 03480 Precast Concrete Structures Delete 2.01 C and replace with the following: “Interior surfaces of all precast concrete structures shall have coating as specified below. 1.Precast concrete structures within 100 linear feet of pipe from the wet well shall be HDPE lined as specified in 09920—Protective Concrete Coating. 2.Precast concrete structures exceeding 100 linear feet of pipe from the wet well shall have a Bitumastic coating as specified in 09900 - Painting.” 4.In Section 09920 Protective Concrete Coating Delete 1.01 A and replace with the following: “Furnish and install all labor, materials, appurtenances and equipment required to provide a corrosion resistant plastic liner on the interior surface of the wet well and manhole structures within 100 linear feet of pipe from the wet well.” D. DRAWING CHANGES: 1.Remove Sheet C-502 in its entirety and replace with the attached Sheet C-502. 2.Remove Sheet D-101 in its entirety and replace with the attached Sheet D-101. 3.Remove Sheet D-102 in its entirety and replace with the attached Sheet D-102. Page 4 of 4 The bid due date remains February 24, 2015 at 2:00 p.m. All prospective bidders are hereby instructed not to contact the City of Cape Canaveral Council, City Manager, or City of Cape Canaveral Staff members other than the noted contact person regarding this Invitation to Bid or their bid proposal at any time during the bid process, all the way up to an award. Any such contact shall be cause for rejection of your bid proposal. ALL OTHER SPECIFICATIONS AND CONDITIONS REMAIN UNCHANGED. RECEIPT OF THIS ADDENDUM IS HEREBY ACKNOWLEDGED ____________________________________________________ NAME OF BUSINESS BY: ________________________________________________ SIGNATURE/DATE ___________________________________________________ NAME & TITLE, TYPED OR PRINTED ___________________________________________________ MAILING ADDRESS ___________________________________________________ CITY, STATE, ZIP CODE