2003 AGN APR 15 I18 - Laserfiche WebLink

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CITY OF COLTON Item #18 AGENDA REPORT For the Colton Utility Authority Meeting of April 15, 2003 TO: HONORABLE CHAIRPERSON AND MEMBERS OF THE COLTON UTILITY AUTHORITY FROM: ERIC FRASER, DIRECTOR OF WATER AND WASTEWATER OPERATIONS SUBJECT: APPROVAL OF CHANGE ORDER NO. 1 IN THE AMOUNT OF $67,000 TO THE KRIEGER & STEWART, INC., CONTRACT FOR CONSTRUCTION MANAGEMENT AND INSPECTION OF WELL NOS. 27, 28, and 29 DATE: April 7, 2003 BACKGROUND Krieger & Stewart Inc. was initially selected by the City of Colton to provide design and construction engineering services for the construction of two wells. Due to the reduction in source capacity as a result of perchlorate contamination, the scope of work was expanded to include two additional wells in order to meet the water supply requirements of the City. DISCUSSION/ANALYSIS By Council action on October 2, 2001, Krieger and Stewart, Inc. was hired to provide construction management and inspection services for the construction of two wells. Krieger & Stewart's original proposal for services related to providing engineering, design, and construction phase engineering for drilling and equipping two new wells for the City of Colton. Subsequent to execution of the agreement for said services, City staff informed Krieger & Stewart that they would like to pursue constructing three to four wells in lieu of two wells due to increased need for production capacity (including loss of use of existing wells in the Western Zone due to perchlorate contamination). Krieger & Stewart subsequently prepared contract documents for drilling up to four wells at the Rialto and Walnut Well Fields and provided complete design and construction engineering services related to this work (i.e., drilling and water quality testing four well pilot bores together with reaming, casing, and developing three of the pilot bores and abandoning the fourth pilot bore due to poor water quality). Services provided by Krieger & Stewart included pilot bore formation sampling for four well pilot bores, aquifer zone sampling for four well pilot bores, inspecting construction and development of three completed wells and abandonment of the fourth well (E2 North pilot bore) due to poor water quality, and addressing problems associated with drilling, sampling, and developing F1 South Well. Subsequent to completion of the three new wells (Wells 27, 28, and 29), Krieger & Stewart prepared Contract Documents for equipping of the wells. In addition, Krieger & Stewart has provided bid phase services and is currently providing construction management services. Engineering services related to the work provided to date, including the additional work listed above, have exceeded the original engineering services agreement amount of $280,706.00. An amendment to the agreement is necessary to complete the construction phase engineering services for the additional wells. It is estimated that the additional cost of inspection, survey, and pumping plant design services will not exceed $67,000. ALTERNATIVES 1. Cease construction on the three wells and purchase water from the City of San Bernardino.