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HomeMy WebLinkAboutItem 2d - Accept Water Main Replacement ProjectV~ GP,1F0$nl9Fjdf -01 STAFF REPORT �4nity of �o Public Works Services Department DATE: December 3, 2013 TO: Honorable Mayor and City Council FROM: Tom Tait, Public Works Services Director By: Ken Herman, Deputy Public Works Services Director Tiffany Lee, Associate Civil Engineer SUBJECT: ACCEPT ALL WORK PERFORMED BY DOMINGUEZ GENERAL ENGINEERING, INC. FOR THE WATER MAIN REPLACEMENT PROJECT AS COMPLETE AND AUTORIZE THE FINAL PAYMENT TO BE MADE IN ACCORDANCE WITH THE CONTRACT DOCUMENTS Recommendation: Approve SUMMARY On June 4, 2013, the City Council awarded a contract to Dominguez General Engineering, Inc. in the amount of $324,055 for the Water Main Replacement Project on Tenth Avenue between Camino Real Avenue and Longden Avenue. The terms and conditions of this project have been complied with and the work has been completed to satisfaction for a total project cost of $331,255. This amount reflects the original contract amount of $324,055 plus contract change orders for additional work, totaling $7,200, or 2.2% of the original contract price. It is recommended that the City Council accept all work performed by Dominguez General Engineering, Inc. as complete and authorize the final payment to be made in accordance with the contract documents. DISCUSSION The 6 -inch cast iron water main along Tenth Avenue was installed in 1938. Over the years, Public Works Services Water Section crews have had to make several emergency repairs to the water main along Tenth Avenue, primarily due to the age and condition of the pipe. The 2008 Water Master Plan Update recommended the replacement of under sized and aging water distribution pipes. The 2012 -13 Capital Improvement Program includes a project for the replacement and of the 6 -inch cast iron water main on Tenth Avenue with new 10 -inch ductile iron pipe. Accept Water Main Replacement Project December 3, 2013 Page 2 of 2 Changing the pipe material from cast iron to ductile iron provides a stronger pipe which will minimize future main breaks. Changing the size of the pipe will also improve the fire flow and water flow in the pipe by allowing the water to flow more freely, with less internal friction in the pipe. Together, these improvements have increased the overall reliability of the pipe and the City's water system. The project also replaced and upgraded the existing fire hydrants to meet current fire protection standards. The final construction cost of the project is $331,255. This amount reflects the original contract amount of $324,055 plus contract change orders for additional work, totaling $7,200, or 2.22% of the original contract price. The change orders encountered during this work were the result of conditions found in the field during construction that were different than the information provided by other utilities, and not discovered during the preliminary site investigations performed during the design of the project. A summary of the items included in the change orders is as follows: Change Order Description of Change or Work 2 FISCAL IMPACT Additional work due to conflict with an unmarked abandoned gas main $ 3,200.00 $ 7,200.00 Amount $ 4,000.00 Addition of one 2 -inch water service Total Change Orders Fiscal Year 2012 -13 Capital Improvement Program has a budget of $400,000 for this Water Main Replacement Project. The total cost for this project is $331,255, which is within the approved budget. RECOMMENDATION It is recommended that the City Council accept all work performed by the Dominguez General Engineering, Inc. for the Water Main Replacement Project as complete and authorize the final payment to be made in accordance with the contract documents Approved. Dominic Lazzarettd City Manager Attachment: Project Location Map V~ GP,1F0$nl9Fjdf -01 STAFF REPORT �4nity of �o Public Works Services Department DATE: December 3, 2013 TO: Honorable Mayor and City Council FROM: Tom Tait, Public Works Services Director By: Ken Herman, Deputy Public Works Services Director Tiffany Lee, Associate Civil Engineer SUBJECT: ACCEPT ALL WORK PERFORMED BY DOMINGUEZ GENERAL ENGINEERING, INC. FOR THE WATER MAIN REPLACEMENT PROJECT AS COMPLETE AND AUTORIZE THE FINAL PAYMENT TO BE MADE IN ACCORDANCE WITH THE CONTRACT DOCUMENTS Recommendation: Approve SUMMARY On June 4, 2013, the City Council awarded a contract to Dominguez General Engineering, Inc. in the amount of $324,055 for the Water Main Replacement Project on Tenth Avenue between Camino Real Avenue and Longden Avenue. The terms and conditions of this project have been complied with and the work has been completed to satisfaction for a total project cost of $331,255. This amount reflects the original contract amount of $324,055 plus contract change orders for additional work, totaling $7,200, or 2.2% of the original contract price. It is recommended that the City Council accept all work performed by Dominguez General Engineering, Inc. as complete and authorize the final payment to be made in accordance with the contract documents. DISCUSSION The 6 -inch cast iron water main along Tenth Avenue was installed in 1938. Over the years, Public Works Services Water Section crews have had to make several emergency repairs to the water main along Tenth Avenue, primarily due to the age and condition of the pipe. The 2008 Water Master Plan Update recommended the replacement of under sized and aging water distribution pipes. The 2012 -13 Capital Improvement Program includes a project for the replacement and of the 6 -inch cast iron water main on Tenth Avenue with new 10 -inch ductile iron pipe. Accept Water Main Replacement Project December 3, 2013 Page 2 of 2 Changing the pipe material from cast iron to ductile iron provides a stronger pipe which will minimize future main breaks. Changing the size of the pipe will also improve the fire flow and water flow in the pipe by allowing the water to flow more freely, with less internal friction in the pipe. Together, these improvements have increased the overall reliability of the pipe and the City's water system. The project also replaced and upgraded the existing fire hydrants to meet current fire protection standards. The final construction cost of the project is $331,255. This amount reflects the original contract amount of $324,055 plus contract change orders for additional work, totaling $7,200, or 2.22% of the original contract price. The change orders encountered during this work were the result of conditions found in the field during construction that were different than the information provided by other utilities, and not discovered during the preliminary site investigations performed during the design of the project. A summary of the items included in the change orders is as follows: Change Order Description of Change or Work 2 FISCAL IMPACT Additional work due to conflict with an unmarked abandoned gas main $ 3,200.00 $ 7,200.00 Amount $ 4,000.00 Addition of one 2 -inch water service Total Change Orders Fiscal Year 2012 -13 Capital Improvement Program has a budget of $400,000 for this Water Main Replacement Project. The total cost for this project is $331,255, which is within the approved budget. RECOMMENDATION It is recommended that the City Council accept all work performed by the Dominguez General Engineering, Inc. for the Water Main Replacement Project as complete and authorize the final payment to be made in accordance with the contract documents Approved. Dominic Lazzarettd City Manager Attachment: Project Location Map WATER MAIN REPLACEMENT PROJECT NORTH CITY OF ARCADIA GRAND VIEW eo e y� SIE RA DRE BL o e 2 = by Q FlRE 0 T � > ORANGE GROVE S�z 0 Q m FOOTHILL BL RIE FOOTHILL FY FOREST PARK COLORADO — J OLOR BL AJ SANTA T J EPH i 2 q� PARK �ST 4 ! 0 'l5�, "tiF a SAN A ST � � 0 Z iQ,ek A! ! > { H I MWT N R �Y /� ? C� FAg N �O ? ! o F COURSE seRTA aiRA �+ DR r O 1yz > HUNTIIJGTOow G< ¢ CAMPUS DR � N A R C A D I A N 5 W ¢ RD 9 > C z o ¢ DUARTE ¢ U) O 7 Z o > , z PROJECT LOCATION m CAMINO REAL ¢ '¢ TENTH AVE. Al CAMINO REAL BETWEEN > o CAMINO REAL AVE. AND LONGDEN AVE. o z w O < ti w LONGDEN AV to LNE O AV LAS TUNAS DR 1 o err >f D 5 LUUA I IUIV IVIAF NOT TO SCALE