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HomeMy WebLinkAboutResolution No. 04-30 RESOLUTION NO. 04- ~ A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF THE COLONY, TEXAS, APPROVING THE TERMS AND CONDITIONS OF THE ENGINEERING SERVICES CONTRACT BY AND BETWEEN THE CITY OF THE COLONY AND CHIANG, PATEL & YERBY, INC. FOR A FEASIBILITY STUDY FOR AN AQUIFER STORAGE RECOVERY (ASR) WATER SUPPLY WELL AT WYNNWOOD PENINSULA, WHICH IS ATTACHED HERETO AND INCORPORATED HEREIN AS EXHIBIT "A"; AUTHORIZING THE CITY MANAGER TO EXECUTE THE CONTRACT; AND PROVIDING AN EFFECTIVE DATE WHEREAS, the City and Consultant have entered into an agreement such that the Consultant is to provide the following services: A FEASIBILITY STUDY FOR AN AQUIFER STORAGE RECOVERY (ASR) WATER SUPPLY WELL AT WYNNWOOD PENINSULA; and WHEREAS, the City has determined that it is in the best interest of the City to enter into the Contract with CHIANG, PATEL & YERBY, INC., which is attached hereto and incorporated herein by reference as Exhibit "A," under the terms and conditions provided therein. WHEREAS, with this Contract the City of The Colony is agreeing to pay a sum not to exceed $34,749.00 for such work. THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF THE COLONY, TEXAS THAT: Section 1. The Engineering Services Contract, which is attached and incorporated hereto as Exhibit "A", having been reviewed by the City Council of the City of The Colony, Texas, and found to be acceptable and in the best interest of the City and its citizens, be, and the same is hereby, in all things approved, and the City Manager is hereby authorized to execute the Agreement on behalf of the City of The Colony, Texas. Section 2. That this Resolution shall take effect immediately from and after its adoption and it is so resolved. PASSED, APPROVED and EFFECTIVE this 17th day of MAY, 2004. f'x Jo/~n Dillar~, Ma'~"~ .... AT. TEST: · . ~ C~ty of The Colony, Texas Christie Wilson, City Secretary [CITY SEAL] 63918 APP ROV E//~ j~M: Robert ~ Hagen, ~,~orney 63918 City of The Colony Engineering Services Agreement for Design of an Aquifer Storage Recovery (ASR) Equipped Water Supply Well At Wynnwood Peninsula Exhibit A Scope of Services General The Project includes the design and development of plans and specifications for an Aquifer Storage Recovery (ASR) equipped water supply well. The well will be located at the proposed pump station site in Wynnwood Peninsula. Detailed Scope of Services 1. Feasibility Study a. Recharge Objectives - Consider and prioritize ASR well objectives. Come to an agreement with The City on the main objectives of the project and determine project direction. b. Water Supply - Analyze each of the water sources for recharge. Estimate the flow rates available for recharge. c. Water Quality - Review average and seasonal water quality for the City. Compare recharge water to drinking water standards and to native groundwater. d. Water Demand Profiles - Analyze monthly and daily demand profiles for the City. Determine peak to average demand ratios. e. Hydrogeology - Evaluate area hydrogeology. Evaluate possible storage zones (Twin Mountain, Paiuxy and Woodbine aquifers). Estimate competence of confining units. f. Selection of Recharge Process - Develop a preliminary estimation of recharge capacity. Evaluate the recharge process. g. Site Selection - Evaluate disposal of produced water. Evaluate land availability. Evaluate potential contamination sources and property boundaries. h. Economic Considerations - Develop cost benefit analysis. Develop cost estimate for the drilling and construction program. Estimate capital and operating costs for the ASR Well. i. Other Considerations - Perform basic review of regulatory and water rights issues, local environmental concerns and institutional constraints. Establish City ordinances or policies to safeguard stored water. j. Prepare a final report 2. Preliminary Planning and Design a. Predesign Conference - Meet with the City staff to discuss the requirements for the new facilities and any constraints to the construction of the new facilities. Provide comments regarding sequencing of well construction, geophysical logging program, water quality sampling program and other supplemental issues required to support ASR decision making. b. Design Memorandum - Prepare a design memorandum for review by the City. c. Preliminary Plans - Develop preliminary plans for review by the City. The preliminary plans will include a proposed site plan indicating the location of the well and connection to proposed piping and utilities. Well design will include depth, casing size, screen intervals, pump and motor, variable frequency drive, wellhead piping and valves. d. Preliminary Design Meeting - Conduct a preliminary design review meeting with the City Staff to discuss the City's review comments from the preliminary design submittal. e. Permit Application - Prepare and submit an Underground Injection Control (UIC) permit application to TCEQ. 3. Final Design a. Prepare plans and specifications, suitable for bidding and construction of the new facilities. b. Submit the plans and specifications to the City for review and comment c. Conduct a design review meeting with the City Staff to discuss the City's review comments from the design submittal. d. Incorporate the City's comments and prepare final plans and specifications for bidding 4. Bidding and Award a. Conduct a prequalification process to identify acceptable drilling contractors to provide well construction. b. Assist the City in advertising and receiving bids c. Answer any questions from biddem and prepare any required addenda d. Review bids received and make a recommendation regarding award of a construction contract 5. Construction Task 1 Construction Phase Services a. Attend the project pre-construction meeting. b. Make periodic (approximately monthly) site visits to review the contractor's progress and to determine if the construction is being completed in general conformance with the plans and specifications. c. Review and process contractor shop drawings. d. Review the contractor's monthly progress payment application and make a recommendation to the City regarding payments to the contractor e. Respond to any questions submitted by the contractor regarding the intent of the plans and specifications. f. Assist the City in preparing and negotiating any required change orders. Make recommendations to the City regarding any change orders. g. Incorporate any construction records submitted by the City or the contractor into the plans and specifications and submit a set of record drawings. Task 2 Resident Engineer a. Provide a Resident Engineer to observe data collection at the well site during construction activities. b. Prepare weekly summaries, to be furnished to the City and to regulatory agency staff. Task 3 Start-up Testing, Final Inspection, Record Drawing Review a. Perform a facility inspection after the Contractor declares the facility is Substantially Complete. b. Develop a punch list of items for the Contractor to address, based on the substantial completion inspection. c. Attend the Contractor's facility demonstration and review the Punch List items. d. Review the Contractor's record drawings and will provide comments to aid in completion of record drawings by the design staff. e. Conduct baseline hydraulic injection testing of the completed well and wellhead facilities. f. Provide one day of training for City staffregarding operation of the ASR facility. g. Conduct an ASR cycle testing program. h. Provide up to 80 hours of consultant assistance during the first two years of operation to respond to operator questions. Assumptions 1. There are reasonably productive sand formations in the Twin Mountains aquifer. 2. Resident observation for hours in excess of those assumed for this scope of work will be billed at an hourly rate of $90, including labor and expenses. 3. The selected site for ASR testing will include reasonable provision for discharge to waste for ambient groundwater and recovered treated drinking water, such as from pumping tests, related well drilling activities and at pump startup. This could be to a storm sewer, ditch, drainage swale, or direct to surface waters. 4. For planning purposes, the target storage volume (TSV) for ASR activities associated with a I MGD additional yield, is assumed to be 100 MG. This includes a buffer zone estimated at 10 MG and a recoverable volume of 90 MG, or I MGD for 90 days. Assumed normal groundwater production rate is 2 MGD while assumed additional recharge rate is I MGD. Recharge water is assumed to be available during the months of October to May. The TSV estimate will be adjusted based upon cycle testing results. 5. The City will assign one or more staff who will be primarily responsible for coordination during well construction and testing, and also responsible for routine operation of ASR facilities upon completion. 6. During the cycle testing program, the Engineer will conduct the first geochemical validation cycle. City staff will provide assistance to the Engineer's staff to conduct the second cycle. City staff will conduct the third cycle with assistance from the Engineer, and will conduct subsequent larger volume cycles during formation of the TSV. All data will be transmitted to the Engineer electronically within one day of collection. During the first two years of full operations, monthly operating reports will be provided to the Engineer within one week after the end of each month, providing water quality and hydraulic data in a tabular format to be suggested by the Engineer. 7. The City will provide a suitable site with reasonable access for ASR facilities construction; treated drinking water for well construction (200 gpm), testing (up to 1000 gpm for a few hours) and storage (whatever flow rate is available); suitable provision for disposal of water produced during well construction and testing; electrical power supply to a transformer to be provided as part of this project at a location within 100 fi oftbe wellhead; and hardwired telemetry control to the wellhead. The City will pay all permit application fees and will provide laboratory analysis of water quality samples. The City will not provide resident observation services during well construction. During wellhead construction the Engineer will be primarily responsible for providing resident observation, with support from City staff. 8. It is expected and assumed that suitable sand layers are present in the Twin Mountain aquifer. However, if ASR technology is shown to be non-viable as a result of initial hydrogeologic testing during the initial planning and design phase, ASR capacity could require construction of wells in either the Paluxy or Woodbine aquifers. 9. It is possible that a monitoring well will be required in support of the UIC permit application, or to better define the aquifer and confining characteristics of the subsurface formations. If this is necessary a revised contract scope of work and cost estimate will be negotiated with the City before proceeding with subsequent work 10. To the extent that the project extends beyond February 2007, the Engineer reserves the right to provide a reasonable cost escalation factor for remaining tasks to be completed at that time, to account for increased labor and expenses costs compared to April 2004 when this budget is being prepared. It is assumed that a % annual cost escalation factor based on the consumer price index. 11. The Engineer will include the following items in the construction contract: a. Obtain cores and geotechnical data (grain size distribution analysis, continuous wireline cores) in the well, using either the combined services gf a well driller and a geotechnical contractor in the same hole, or through continuous wimline coring by the well driller. b. Obtain geophysical logs and analyze up to eight cores to determine their physical characteristics, including x-ray diffraction, acid insoluble residue analysis, porosity, cation exchange capacity, scanning electron microscope (SEM), energy dispersive x-ray spectral analysis (EDX), petrographic analysis, core descriptions with photographs. 12. This cost proposal is based on 720 hours of resident observation time. The Engineer will negotiate with the City if additional resident observation time is required. 13. City to provide water quality sampling from the existing wells. 14. The proposed budget is lump sum for all tasks except for permitting. Permitting has a $I0,000 cap any additional work on this item will be billed separately. Schedule Feasibility Study 6 weeks from the date of Notice to Proceed Preliminary Planning and Design 2 months from the approval of the final report Final Design 2 months after receipt of Preliminary Design Comments Bidding and Award 90 days after acceptance of Final Plans and Contract Documents Construction Phase Production well facilities 6 months from Notice to Proceed of Construction Contract Beneficial use of ASR facilities 10 months after completion of production well facilities or receipt of UCI permit, which ever is later. City supply pipeline must be installed prior to injection testing City of The Colony Engineering Services Agreement for Design of an Aquifer Storage Recovery (ASR) Equipped Water Supply Well At Wynnwood Peninsula Exhibit B Chiang, Patel & Yerby, Inc. Fee Estimate 21-Apr-04 Tasks Fee 1 Feasibility Study $34,749 2 Preliminary Planning and Design $71,872 3 Final Design $61,047 4 Bidding and Award $5,382 5 Construction $192,154 Total $365,204