ADDENDUM # 3 CITY OF CAPE CANAVERAL BID # CITY OF CAPE CANAVERAL WWTP IMPROVEMENTS FOR OXIDATION DITCH REHABILITATION June 24, 2016

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1 ADDENDUM # CITY OF CAPE CANAVERAL BID #- CITY OF CAPE CANAVERAL WWTP IMPROVEMENTS FOR OXIDATION DITCH REHABILITATION June, 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 is June, No further questions or RFI s will be accepted after that date. Addendums may be issued up to hours prior to the bid opening due time. Brief addenda may be issued between hours and hours before Bid time by 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, Polk Avenue, Cape Canaveral, FL. A. QUESTIONS RECEIVED DURING BIDDING. Division - Equipment Section within the Table of Contents calls out Fabricated Aluminum Slide and Weir Gates. The body of that particular spec section calls for the gates to be stainless steel. Please clarify what material the weir and slide gates will be made of. Refer to change to Table of Contents under Specification Changes below.. Revised sheet D-, Detail per Addendum The elevation for the wall mounted weir gate is not legible. Please clarify the elevations for the weir gate. Page of

2 . If you refer to specification section. B, O-Rings Between Discs and Retainer Rings. I would like to request to change those specifications to Aquarius. Manufacturers and Suppliers seeking to submit alternates or a request for equivalency on any material listed within this project shall not do so during the solicitation process. Alternate submittals can be submitted to a potential bidder. If Bidder so chooses, the alternate submittal can be listed in Section Bid Form (Substitution List of Manufacturers/Suppliers located on Page -) within their submittal and the alternate or request will be reviewed by the City of Cape Canaveral and the Engineer after an award has been made, only if it has been submitted by the awarded Bidder.. In. B, drop pipes shall be a minimum of schedule or gauge. In the design our drop pipe diameter is. Thus, for GA a Schedule S should be used and for GA a Schedule S should be used. Refer to change to Section Fine Bubble Diffused Aeration System and Section Stainless Steel and Fittings under Specification Changes below.. It appears from specification sheet, section. B, that testing is requested. However, the section itself is a bit vague. Could we, instead, send data curves showing that the diffusers will meet the specifications in lieu of having a test? Data curves are not acceptable. Provide clean water performance tests in accordance with the latest ASCE Clean Water Test Procedures as specified. Alternatively, submit certified test report from previous oxygen transfer testing performed in accordance with ASCE Standards. Test reports shall be for testing same diffuser model proposed at specified submergence and at diffuser densities equivalent to the actual tank configuration. Previous test results which do not meet the testing requirements specified herein will not be acceptable. Due to the last minute nature of the bidding process we request that the required numbers of copies be reduced to original and copy in lieu of triplicate. This would allow us more time to evaluate the scope and pricing we are receiving in order to provide the City of Cape Canaveral with the most competitive price in lieu of closing the bid early in order to allow time to fill out all required copies of the bid form. Submit as specified. Per the Bid Form page - the Trench Safety Affidavit (Section ) is required to be submitted, however this information is also contained in article page - of the Bid Form. Please confirm that we do need to submit this duplicate information on Section in addition to page - of the Bid Form. Submit as specified.. Are separate HOA switches mounted to stanchions required for the all the actuators furnished under Specification? Or is the HOA acceptable on the actuator itself? HOA on the actuator is acceptable.. Please provide a detail for the ARV as shown on the air piping to the east of the blower (D- ). What size is the ARV? There is not an ARV on the air piping. Provide Pressure Relief Valve per Specification. Page of

3 . Reference D-, for the tie-ins to the MLSS, do you mean "MJ Sleeves" when "Flanged Restrained Couplings" are noted? Reference D-, Cut-in and connections to existing pipe may use MJ sleeves or flanged restrained coupling.. When the Oxidation Ditch is fulling drained, the plant will be losing, gal (per bid form) of wastewater from the system. When the Oxidation is put back into service, will the Contractor be responsible for re-seeding the, gal of wastewater? If so, can this be added as an allowance? If not, where does the City intend on receiving the sludge from? Note the, gallons listed in the bid form is to establish a unit cost, refer to bid item in Section. Mixed liquor from the flow equalization basin, which will serve to provide temporary aeration volume during construction at the oxidation ditch can be used for seeding the oxidation ditches...., D calls for ( ea) " linestops. Please confirm these are in fact required and where they are to be located. It is the Contractor s responsibility to review the plans and determine whether bypass pumping and line stops are required to maintain treatment during construction. Anticipated bypass pumping needs are summarized in Section. Depending on Contractor s means and methods additional bypass pumping may be needed. Contractor shall provide primary and secondary line stops at each pipe segment needing to be isolated..,., E calls for a temporary flow meter. This meter is also shown on Section D on D-, correct? Is this pump out location to be used to drain the Oxidation Ditch? It is the Contractor s responsibility to review the plans and determine whether bypass pumping and line stops are required to maintain treatment during construction. Anticipated bypass pumping needs are summarized in Section. Depending on Contractor s means and methods additional bypass pumping may be needed. Contractor shall provide temporary flow meter for each bypass pumping operation to monitor flows. Refer to Bid Item in Section regarding draining requirements for the oxidation ditch.. - Bypass Pumping System - Will the City allow the Contractor to tap into the City's electrical system for use of the primary bypass pump? Will the City pay for the electrical usage of this pump? Provide bypass pumping in accordance with Section. The Contractor is responsible for providing power source and paying all costs for operating the bypass pumping system.. -If the City does not pay for the electrical on the bypass pumps, will the City pay for the fuel usage of the bypass pumps? Refer to Answer # above. Is there a means to isolate the effluent flow from the Anoxic basin # into the effluent in MLSS piping? There is an existing x foot by ft deep weir box at the effluent (refer to revised Drawing D- under Drawing Changes below). Contractor can operate bypass pump to maintain water level below top of box elevation (EL = +/- ft). Additional precautions should be taken which may include installing temporary cover over box inlet, installing plug in pipe inlet, or plug by other means. Page of

4 If not, can one side of the st Anoxic Basins be taken offline to facilitate installation of the new Effluent valves? Contractor should plan for maintaining operation of both anoxic basins at all times. Exceptions may be considered during construction on a case-by-case basis.. How long can the Anoxic Basin function on half capacity? See responses above.. Does the first Anoxic Basin have isolation gates at the influent channel? B. SPECIFICATION CHANGES: Yes. Refer to revised Drawing D- under Drawing Changes below. However, please note that Contractor should plan on keeping both basins online at all times.. Table of Contents: DELETE Page iii in its entirety and REPLACE with attached Page iii.. Section Fine Bubble Diffused Aeration System: DELETE Paragraph..B.. in its entirety and REPLACE with the following:. Drop pipes shall be Type L stainless steel pipe meeting requirements of Section The pipes shall extend from approximately feet above the top of the process tank to point feet above the air grid manifold. A flanged connection with a lb drilling shall be provided at the top of the pipe and a Type L stainless steel gasketed coupling shall be provided for connection to the manifold.. Section Stainless Steel Pipe and Fittings: DELETE Paragraph..B in its entirety and REPLACE with the following Paragraph..B. B. C. DRAWING CHANGES: Stainless steel pipe and fittings -inches in size and larger shall be Schedule S or gauge. Stainless steel pipe and fittings smaller than inches in size shall be Schedule S or gauge.. Drawing D- Yard Piping Plan Equalization/Anaerobic st Anoxic Basins: DELETE Drawing D- in its entirety and REPLACE with attached Drawing D-. BID DATE REMAINS JUNE, AT : P.M. Page of

5 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 Page of

6 CITY OF CAPE CANAVERAL WWTP IMPROVEMENTS FOR OXIDATION DITCH REHABILITATION TABLE OF CONTENTS (Continued) Section Title Earthwork Solid Sodding DIVISION - CONCRETE Concrete Formwork Concrete Reinforcement Concrete Joints and Joint Accessories Cast-in-Place Concrete Concrete Finishes Grout Modifications and Repair to Concrete Reinforced Unit Masonry Miscellaneous Metal DIVISION MASONRY DIVISION - METAL DIVISIONS - NOT USED DIVISION - COATINGS Painting Piping, Valve and Equipment Identification DIVISION NOT USED DIVISION - EQUIPMENT Fabricated Stainless Steel Slide and Weir Gates Bypass Pumping System Fine Bubble Diffused Aeration System Oxidation Ditch Aeration Equipment RSS/snr/slh/specs/s-/toc-Add Tt #-- iii

7 PRETREATMENT STRUCTURE " MJ PLUG VALVE PUMP D- SPIG " DIP " X " REDUCER MJ F " DIP " MJ PLUG VALVE " OAK " DIP " RCP SPIG & INSTALL " X " MJ TEE (SEE SHEET D-) " DRAIN CATWALK 'X' ALUMINUM BOX FUTURE /" PVC CARBON FEED CUT IN MJ SLEEVE AND SPOOL PIECE AND FLANGED RESTRAINED COUPLING (SEE SHEET D-) 'X' ALUMINUM BOX EAST PINE STREET, SUITE ORLANDO, FL PHONE: () - FAX: () - " X " TEE MJ C D- SEE NOTE D- D- st ANOXIC BASINS SCALE: NTS DETAIL.'.' " DIP FUTURE /" PVC CARBON FEED BASINS " DR EXISTING PANEL TO REMAIN D- D- REMOVABLE BOLLARD EXISTING EDGE OF PAVEMENT EXISTING WEIR GATE CUT, COLLECT DRAINS, AND INSTALL " FPC, "x" TEE MJ, " PV MJ, AND " PV MJ (SEE NOTE ) CO ELECTRICAL PIPE SUPPORT D-. " DIP SEE NOTE # ELEC PANEL PUMP " PVC " DIP " DIP DROP INLET TOP. " DIP REJECT FM NOTES. EXISTING EDGE OF PAVEMENT SEE SHEET D- FOR FLOW EQUALIZATION BASIN PLAN EXISTING STORM SEWER (FIELD VERIFY SIZE AND LOCATION) REMOVABLE BOLLARD D- OPEN CUT AND PAVEMENT RESTORATION D- N ' ' SCALE: " = ' A EXISTING EDGE OF PAVEMENT DETAIL G- SCALE: " = '. SEE SHEET D- FOR THE DIFFUSER LAYOUT.. ALL PIPE JOINTS SHALL BE RESTRAINED JOINTS.. PROVIDE REMOVABLE BOLLARDS PER DETAIL, SHEET D- WHERE NOTED. ALL OTHER BOLLARDS SHALL BE STANDARD BOLLARDS PER DETAIL, SHEET D-.. REFER TO SECTION FOR SUGGESTED SEQUENCE OF CONSTRUCTION.. CONTRACTOR SHALL PROVIDE TEMPORARY TRAFFIC CONES, BARRICADES, OR OTHER ENGINEER APPROVED METHOD TO PROTECT IR PUMPS DURING CONSTRUCTION. RESTRAIN FITTINGS LOCATED ALONG EXISTING PIPE WHERE MECHANICAL RESTRAINING DEVICES ARE NOT ALREADY PROVIDED. THE CONTRACTOR SHALL CLEAN EXISTING " FM REJECT PIPE BETWEEN FLOW EQUALIZATION BASIN AND THE EXISTING MOTORIZED VALVE. LEGALLY DISPOSE REMOVED CONTENTS. ' // WWTP IMPROVEMENTS FOR OXIDATION DITCH REHABILITATION CONCRETE PAD T/SLAB EL=' B D- Bar Measures inch Copyright: Tetra Tech YARD PIPING PLAN EQUALIZATION/ ANAEROBIC/ st ANOXIC BASINS MARK " PALM D-. BOLLARD INSTALL "x" TEE (MJ) PUMP HP BLOWER WITH VFD & ENCLOSURE DATE. CMU BAFFLE WALL CONCRETE PAD DESIGNATED AREA FOR TEMPORARY IR PUMP(S) T/SLAB EL=MATCH T/ASPHALT (SEE NOTE ) SEE NOTE #. SPIG C D- " DIP TOP FLOW EQUALIZATION BASIN DESCRIPTION BY " DIP FUTURE SUPPLEMENTAL CARBON STORAGE AND FEED FACILITY CONCRETE PAD WITH TEMPORARY IR PUMP CONNECTIONS T/SLAB EL=' // :: AM - P:\IER\\--\CAD\SHEETFILES\D- DEMOLITION AND YARD PIPING PLAN - OXIDATION DITCH.DWG - SANFORD, CHADWICK " DIP // D D- OPEN CUT AND PAVEMENT RESTORATION BID SET PROTECT AND TEMPORARY SUPPORT THE EXISTING PIPE " X " TAPPING SLEEVE AND VALVE ELEC PANEL CIS E SHUT OFF VALVE DATE EXISTING " DIP TO FIRST ANOXIC BASIN OPEN CUT EXISTING " DIP TO SECOND ANOXIC BASIN Rasesh R. Shah, P.E. P.E. No., FL " PLUG VALVE FLG CUT IN MJ SLEEVE AND SPOOL PIECE AND FLANGED RESTRAINED COUPLING (SEE SHEET D-) (SEE DETAIL THIS PAGE) RSS East Pine Street, Suite Orlando, Florida Engineering Business No. " DIP