Bidding and Contract Requirements:

CITY OF LAREDO, TEXAS WATER UTILITIES DEPARTMENT 24-INCH TRANSMISSION MAIN ADDENDUM 7 June 10, 2016 To Bidder of Record: The following changes, additions, and/or deletions are hereby made a part of the Contract Documents for the construction of the 24-inch Transmission Main Project, for the City of Laredo, Texas, Dated March 31, 2016, as fully and completely as if the same were set forth therein. Bidding and Contract Requirements: 1. A-5, PROPOSAL, BID SCHEDULE, S 5, 6, & 7: REVISE pipe class from C-900 DR-18 CLASS 235 to C-900 DR-14 CLASS 305 Note: No change in quantity. 2. A-5, PROPOSAL, BID SCHEDULE, S 10, 11, 12, & 13: CLARIFICATION Valve assemblies include valve box. Note: No change in quantity. 3. A-5, PROPOSAL, BID SCHEDULE, 22, Select Backfill Material: REVISE Description and Quantity from Loose 15,660 CY to Compacted 12,500 CY. 4. A-5, PROPOSAL, BID SCHEDULE, 22, Select Backfill Material: CLARIFICATION: Select Backfill Material will only be required in areas that do not meet the City of Laredo Utility Trench Backfill Condition A criteria and/or Geotech Report conditions. All other areas may use on-site soil that meets the City of Laredo Utility Trench Backfill Condition A criteria and/or Geotech Report conditions. Regardless of which one is used, the on-site soils and backfill materials should be relatively free and clean of deleterious material or materials exceeding 3 inches in maximum dimension as per Geotech Report. 5. A-5, PROPOSAL, BID SCHEDULE, 23, 12 Crushed Concrete: REVISE Description and Quantity from Loose 2,500 CY to Compacted 2,000 CY. 6. A-5, PROPOSAL, BID SCHEDULE, 23, 12 Crushed Concrete: CLARIFICATION Crushed Concrete shall conform to Section 247.2.1.3.2., Recycled Material (Including Crushed Concrete) Requirements, of the Texas Department of Transportation Specifications 2004 or latest edition, compacted to at least 98 percent of the maximum dry density as per Geotech Report. 7. A-5, PROPOSAL, BID SCHEDULE, 23, 12 Crushed Concrete: ALTERNATE Crushed Limestone may be used in lieu of Crushed Concrete conforming to Item 247 Flexible Base of the Texas Department of Transportation Specifications 2004 or latest edition, compacted to at least 98 percent of the maximum dry density as per Geotech Report. 24 Transmission Main 6/10/2016

8. A-5, PROPOSAL, BID SCHEDULE, 24: REVISE description to include OSHA Requirements. Note: No change in quantity. 9. A-5, PROPOSAL, BID SCHEDULE, 25: REVISE Description Unit and Quantity from Silt Fence, Construction Fencing, & SW3Ps 1 Lump Sum to Silt Fence - 8000 LF. 10. A-5, PROPOSAL, BID SCHEDULE: ADD 25(a) Construction Fencing 2000 LF. 11. A-5, PROPOSAL, BID SCHEDULE: ADD 25(b) Inlet Protection 10 EA. 12. A-5, PROPOSAL, BID SCHEDULE, S 32, 33, 34, 35, & 36, Pipe Restraints: CLARIFICATION Pipe Restraints include Joints & Fittings. Note: No change in quantity. 13. A-5, PROPOSAL, BID SCHEDULE, 37: REVISE Description, Unit, and Quantity from Installation of Native Seed for Re-Vegetation 124,000 SF to Installation of Native Seed for Re-Vegetation as per TxDOT Item 164. Includes Fertilizer as per TxDOT Item 165. 2.8 Ac. 14. A-5, PROPOSAL, BID SCHEDULE, 38: REVISE Description, Unit, and Quantity from Temporary Irrigation for Re-Vegetation 1 LS to Temporary Irrigation for Re-Vegetation as per TxDOT Item 168 2,020 (Quantity) 1,000 GAL (Unit). 15. A-5, PROPOSAL, BID SCHEDULE, 39, Contingency Costs: REVISE description. Note: No change in quantity. 16. A-5, PROPOSAL, BID SCHEDULE, 40: REVISE Unit and Quantity from 1 LS to 1,390 (Quantity) 1,000 GAL (Unit). Drawings: 17. A-5, PROPOSAL, BID SCHEDULE, ADDITIVE ALTERNATE S, 1: REVISE description. Note: No change in quantity. 18. A-5, PROPOSAL, BID SCHEDULE, ADDITIVE ALTERNATE S, S 1, 2, & 3: CLARIFICATION: Items include Tack Coat as per TxDOT Item 300. 19. A-5 PROPOSAL: REPLACE this section in its entirety with the attached section. 20. SHEET 7 OUT OF 30, DETAIL A : REVISE Detail A to include a 24 x2 Service Tap, 2 x1 Reducer, 1 Corp. Stop, & 1 Sch. 40 PVC Piping. 21. SHEET 7 OUT OF 30: REPLACE this drawing in its entirety with the attached sheet. 24 Transmission Main 6/10/2016

ALL BIDDERS SHALL ACKNOWLEDGE RECIEPT OF ADDENDUM 7 IN THE BID FORM AND HIS/HER SIGNATURE AFFIXED HERETO AND TO FILE SAME AS AN ATTACHMENT TO HIS/HER BID. BID FORMS SUBMITTED WITHOUT THIS ACKNOWLEGEMENT WILL BE CONSIDERED INFORMAL. Armando Guerra, P.E. Premier Engineering Surveying 06/10/2016 Premier Engineering Surveying Firm No. 8019 ACKNOWLEDGEMENT BY BIDDER THE UNDERSIGNED ACKNOWLEDGES RECIEPT OF THIS ADDENDUM 7 AND THE BID SUBMITTED HEREWITH IS IN ACCORDANCE WITH THE INFORMATION AND STIPULATIONS SET FORTH. Date Signature of Bidder END OF ADDENDUM 24 Transmission Main 6/10/2016

Appended hereto and part of Addendum No. 7 are: 1. REVISED A-5, PROPOSAL 2. REVISED SHEET 7 OUT OF 30 24 Transmission Main 6/10/2016

Proposal Pages 1 of 21 A-5 PROPOSAL To: From: The City of Laredo, Texas ATTN: Honorable Pete Saenz, Mayor Contractor Address: PROJECT: 24 TRANSMISSION MAIN WATER LINE Attn: Honorable Pete Saenz Pursuant to Notice to Bidders, the undersigned bidder hereby proposes to furnish the labor, materials, and equipment in accordance with the plans and specifications, general conditions of the agreement, special provisions of the Agreement, and Addenda, if any. The bidder binds himself upon acceptance of his proposal to execute a contract and bonds accompanying form of performing and completing the said work within the time stated as required by the detailed specifications at the following unit prices. The quantities shown below are based on the Engineer s estimate of quantities and it is agreed that the quantities may be increased or diminished, and may be considered necessary in the opinion of the Webb County, Texas to complete the work fully as planned and contemplated, and that all quantities of work, either increased or decreased, are to be performed at the unit prices set forth below (except as provided in the General Conditions of the Agreement or the specifications, the contract documents). Acknowledgment of Addenda: (Please initial and date): Addendum No. 1: Addendum No. 2: Addendum No. 3: Addendum No. 4: Addendum No. 5: Acknowledgment of other documents: (Please initial and date):

Proposal Pages 2 of 21 AFFIDAVIT PROJECT: 24 TRANSMISSION MAIN WATER LINE Form of Non-Collusive Affidavit STATE OF TEXAS {} COUNTY WEBB {} being first duly sworn, deposes and says That he is (a Partner of Officer of the firm of, etc.) the party making the foregoing proposal or bid, that such proposal or bid is genuine and not collusive or sham; that said Bidder has not colluded, conspired, connived or agreed, directly or indirectly, with any Bidder or Person, to put in a sham bid or to refrain from bidding, and has not in any manner, directly or indirectly, sought by agreement or collusion, or communication or conference, with any person, to fix the bid price or affiant or of any other Bidder or to fix any overhead, profit or cost element of said bid price, or of that of any other Bidder, or to secure any advantage against the County of Webb or any person interested in the proposed Contract; and that all statements in said proposal or bid are true. Signature of Bidder, if the Bidder is an individual Partner, if the Bidder is a Partnership Officer, if the Bidder is a Corporation Subscribed and sworn before me this day of, 20. My Commission expires Notary Public

Proposal Pages 3 of 21 BID SCHEDULE PROJECT: 24 TRANSMISSION MAIN WATER LINE DESCRIPTION WITH PRICE IN PRICE 1 2 Clearing & Grubbing (Unpaved Areas) remove and dispose of existing materials as required to install new utilities as shown on plans. Mobilization mobilize as required to install new utilities as shown on plans. 24 PVC Water Pipe (C-905 DR-18) CLASS 235 LS 1 LS 1 3 construct 24 water line in accordance with the drawings and specifications, complete, tested, and in LF 16830

Proposal Pages 4 of 21 DESCRIPTION WITH PRICE IN PRICE 16 PVC Water Pipe (C-905 DR-18) CLASS 235 4 install 16 water line in accordance with the drawings and specifications, complete, tested, and in LF 60 12 PVC Water Pipe (C-900 DR-14) CLASS 305 5 install 12 water line in accordance with the drawings and specifications, complete, tested, and in 8 PVC Water Pipe (C-900 DR-14) CLASS 305 LF 170 6 install 8 water line, complete, tested, and in 6 PVC Water Pipe (C-900 DR-14) CLASS 305 LF 300 7 install 6 water line, complete, tested, and in LF 100

Proposal Pages 5 of 21 DESCRIPTION WITH PRICE IN PRICE 24, 16, 12, 8, & 6 Fittings (Elbows, Tees, Bends, Plugs, Etc.) install fittings in accordance with the TON 25 8 Fire Hydrant Assembly w/rpm s 9 install Fire Hydrant Assembly in accordance with the drawings and specifications, complete and in 24 Butterfly Valve Assembly EA 15 10 install Butterfly valves, including valve box in accordance with the drawings and specifications, complete and in 16 Butterfly Valve Assembly EA 22 11 install Butterfly valves, including valve box in accordance with the drawings and specifications, complete and in EA 1

Proposal Pages 6 of 21 DESCRIPTION WITH PRICE IN PRICE 12 Gate Valve Assembly 12 install gate valves, including valve box in accordance with the drawings and specifications, complete and in 8 Gate Valve Assembly EA 4 13 install gate valves, including valve box in accordance with the drawings and specifications, complete and in Air Release Valve Assembly EA 5 14 install air release valves in accordance with the drawings and specifications, complete and in Blow-Off Valve Assembly EA 5 15 install blow-off valves in accordance with the LF 6

Proposal Pages 7 of 21 DESCRIPTION WITH PRICE IN PRICE Temporary Blow-Off Valves Assembly 16 install Temporary Blow-Off Valves in accordance with the drawings and specifications, complete and in Testing Port Assembly EA 8 17 install testing port in accordance with the 36 Steel Casing (Open Cut) EA 3 18 install 36 steel casing in accordance with the Concrete Encasement for 12 Sewer Lines & FM Line LF 20 19 install Concrete Encasement in accordance with the drawings and specifications, complete and in LF 50

Proposal Pages 8 of 21 DESCRIPTION WITH PRICE IN PRICE Remove Asphalt/Concrete/Curb 20 remove asphalt, concrete and curb along the 24 Transmission Main Alignment accordance with the drawings and specifications, complete and in SY 5,750 10 Reinforced Concrete (4000 psi-no. 4 Bars @ 18 OCEW Early Strength) @ Del Mar Blvd. & Jacaman Rd. Crossings 21 install Concrete in accordance with the SF 1,600 22 Select Backfill Material (Compacted) install select backfill material in accordance with the geotechnical report, drawings, and specifications, complete, tested, and in CY 12,500

Proposal Pages 9 of 21 DESCRIPTION WITH PRICE IN PRICE 12 Crushed Concrete (Compacted) 23 install crushed concrete in accordance with the drawings and specifications, complete and in CY 2,000 Trench Safety System 24 install a Trench Safety System in accordance with OSHA requirements, complete and in LF 16,830 25 Silt Fencing install silt fence in accordance with the LF 8,000

Proposal Pages 10 of 21 DESCRIPTION WITH PRICE IN PRICE Construction Fencing 25(a) install construction fencing in accordance with the drawings and specifications, complete and in LF 2,000 Inlet Protection 25(b) install construction fencing in accordance with the drawings and specifications, complete and in EA 10

Proposal Pages 11 of 21 DESCRIPTION WITH PRICE IN PRICE Traffic Control 26 Furnish all labor, equipment, and material prepare and maintain a traffic control plan in accordance with the drawings and specifications, complete and in Connection to Existing 24 Transmission Main Along Del Mar LS 1 27 Furnish all labor, equipment, and material for the connection in accordance with the Connection to Existing 12 Water Line at Jacaman Rd. & Loop 20 EA. 1 28 Furnish all labor, equipment, and material for the connections in accordance with the EA. 2

Proposal Pages 12 of 21 DESCRIPTION WITH PRICE IN PRICE Connection to existing 8 Water Line along Casa Verde Rd. 29 Furnish all labor, equipment, and material for the connection in accordance with the Existing 12 Waterline Readjustment along Del Mar Blvd. EA. 2 30 Furnish all labor, equipment, and material for the readjustment in accordance with the EA. 1 Existing 8 Waterline Readjustment along Polaris 31 Furnish all labor, equipment, and material for the readjustment in accordance with the EA. 1

Proposal Pages 13 of 21 DESCRIPTION WITH PRICE IN PRICE 32 Pipe Restraints (Joint and Fittings) for 24 PVC Water Pipe (C-905 DR-18) CLASS 235 install 24 restraints in accordance with the drawings and specifications, complete, tested, and in LF 2500 Pipe Restraints (Joint and Fittings) for 16 PVC Water Pipe (C-905 DR-18) CLASS 235 33 install 16 restraints in accordance with the drawings and specifications, complete, tested, and in LF 60 Pipe Restraints (Joint and Fittings) for 12 PVC Water Pipe (C-900 DR-14) CLASS 305 34 install 12 restraints in accordance with the drawings and specifications, complete, tested, and in LF 120

Proposal Pages 14 of 21 DESCRIPTION WITH PRICE IN PRICE 35 Pipe Restraints (Joint and Fittings) for 8 PVC Water Pipe (C-900 DR-14) CLASS 305 install 8 restraints in accordance with the drawings and specifications, complete, tested, and in LF 300 36 Pipe Restraints (Joint and Fittings) for 6 PVC Water Pipe (C-900 DR-14) CLASS 305 install 6 restraints in accordance with the drawings and specifications, complete, tested, and in LF 100 37 Installation of Native Seed for Re- Vegetation as per TxDOT Item 164. Includes Fertilizer as per TxDOT Item 165. install native seed w/fertilizer in accordance with the drawings and specifications, complete, tested, and in AC 2.8

Proposal Pages 15 of 21 DESCRIPTION WITH PRICE IN PRICE Temporary Irrigation for Re- Vegetation as per TxDOT Item 168 38 temporarily irrigate disturbed areas in accordance with the drawings and specifications, complete, tested, and in Contingency Costs 1,000 GA 2,020 39 Construction Allowance. Bulk Water Fees Allowance LS 1 $200,000.00 $200,000.00 40 Contractor is responsible for any additional Bulk Water Fees. 1,000 GA 1,390 $16,680.00 $16,680.00 TOTAL BASE BID $ TOTAL BASE BID WRITTEN IN : Division A

Proposal Pages 16 of 21 ADDITIVE ALTERNATE S DESCRIPTION WITH PRICE IN PRICE 1 2 3 4 Asphalt Type A or B (Black Base) This item includes paving for the 6ft pipe trench along Casa Verde & Polaris plus asphalt milling and paving work for a 6-ft wide section adjacent to 6-ft wide pipe trench. mill and install asphalt in accordance with the 4 Asphalt Type A or B (Black Base) This item includes Asphalt milling and resurfacing for entire west side of Casa Verde Road along the 24 Water Transmission Main alignment. mill and install asphalt in accordance with the 4 Asphalt Type A or B (Black Base) This Item includes Asphalt milling and resurfacing for entire west side of Polaris Drive along the 24 Water Transmission Main alignment. mill and install asphalt in accordance with the SY 11,500 SY 9,500 SY 10,500 TOTAL ADDITIVE ALTERNATE S BID $ TOTAL ADDITIVE ALTERNATE S BID WRITTEN IN : Division A

Proposal Pages 17 of 21 NOTE: ALL BID S WILL BE PAID FOR WHEN COMPLETE IN PLACE, TESTED, AND ACCEPTED BY THE OWNER. PRICES BID FOR ALL S ARE COMPLETE AND IN PLACE, AND FOR FURNISHING ALL LABOR, MATERIALS, EQUIPMENT, INCIDENTIALS AND ALL APPURTENANCES, AS REQUIRED FOR A COMPLETE AND TOTAL PROJECT AS DESIGNED AND SHOWN IN THE CONTRACT DOCUMENTS AND SPECIFICATIONS. Division A

Proposal Pages 18 of 21 INFORMATION FROM BIDDERS MUST BE COMPLETED AND SUBMITTED WITH BID PROPOSAL PROJECT: 24 TRANSMISSION MAIN WATER LINE Statement of Qualifications: (Similar Projects Completed by Bidder) 1. Name of Project: Value of Contract: Date Completed: 2. Name of Project: Value of Contract: Date Completed: 3. Name of Project: Value of Contract: Date Completed: Experience Data: (Include name and experience record of the Superintendent) Financial Status: A confidential financial statement will be submitted by the apparent successful low Bidder only if the Owner deems it necessary. Division A

Proposal Pages 19 of 21 PROJECT: 24 TRANSMISSION MAIN WATER LINE Proposed Progress Schedules: Data on Equipment to be used on the Work: (Include the number of machines, the type, capacity, age and conditions and location) Subcontractors: (Submit a list of proposed Subcontractors. List sources, types and manufacturers of proposed materials) Division A

Proposal Pages 20 of 21 BID BOND PROJECT: 24 TRANSMISSION MAIN WATER LINE KNOW ALL MEN BY THESE PRESENTS, that we, the undersigned as Principal, and Surety, are hereby held and firmly bound unto as as Owner in the penal sum of for payment of which, well and truly to be made, we hereby jointly and severally bid ourselves, our heirs, executors, administrations, successors and assigns. Signed, this day of, 20. The condition of the above obligation is such that whereas the Principal has submitted to a certain Bid, attached hereto and hereby made a part hereof to enter into a Contract in writing for the NOW, THEREFORE, (a) (b) If said Bid shall be rejected, or in the alternate, If said Bid shall be accepted and the Principal shall execute and deliver a Contract in the Form of Contract attached hereto (properly completed in accordance with said Bid) and shall furnish a bond for his faithful performance of said Contract, and for the payment of all persons performing labor or furnishing materials in connection therewith, and shall in all other respects perform the Agreement created by the acceptance of said Bid, then this obligation shall be void, otherwise the same shall remain in force and effect; it being expressly understood and agreed that the liability of the Surety for any and all claims hereunder shall, in no event, exceed the penal amount of this obligation as herein stated. Division A

Proposal Pages 21 of 21 The Surety, for value received, hereby stipulates and agrees that the obligations of said Surety, and its bonds shall be in no way impaired or affected by any extension of the time within which the Owner may accept such Bid; and said Surety does hereby waive notice of any such extension. IN WITNESS WHEREOF, the Principal and the Surety have hereunto set their hands and seals and such of them as are corporations have caused their corporate seals to be hereto affixed and these presents to be signed by their proper officers, the day and year first set forth herein. Principal (L.S.) Surety By: Division A