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Home My WebLink About13 Hydrogeologic Consulting Agenda Item # 7'LTR � � �, �� Memorandum To: Board of Directors From: Ed Taylor Date: January 27, 2005 Subject: Consideration of proposal from Aqua Hydrogeologic Consulting to provide the supervision and data collection during the Airport Flats# 1 (Featherstone Tank) production well drilling and pumping test programs 1. WHY THIS MATTER IS BEFORE THE BOARD According to District code, consulting agreements that exceed $15,000 must be presented to the Board of Directors for approval. Professional services are required for the supervision and data collection during the Airport Flats# 1 (Featherstone Tank) production well drilling and pumping test programs. 2. HISTORY The District drilled a series of exploration test wells in 2003. One of these sites is the Airport Flats# 1 site (previously Featherstone). The results of the exploration well proved to be positive with regards to water quality and potential productivity. District staff has determined that this is the appropriate time to develop the source. 3. NEW INFORMATION The CEOA has been completed for this project and now it is time to hire a consultant and drill the well. This project is in the 2005 budget to be paid for by facilities fees. 4. RECOMMENDATION I recommend that the Board approve the proposal from Aqua Hydrogeologic Consulting for supervision and documentation during the Airport Flats# 1 production well drilling and pumping test programs in an amount not to exceed $94,149.00 and that staff be authorized to transfer funds from Facilities Fees. y MMI December 9, 2004 Mr. Ed Taylor Water Utility Manager Truckee Donner Public Utility District 11570 Donner Pass Road Truckee, CA 96160 RE: Scope of Work and Cost Estimate for Hydrogeologic Consulting Services for the supervision and data collection during the Featherstone Tank production well drilling and pumping test programs Dear Ed: I am pleased to present this scope of work and cost estimate for the supervision and data collection during the drilling and construction of the proposed Featherstone Tank production well and subsequent pump development and pumping tests. The following summarizes the proposed work plan; a detailed scope of work and cost estimate follows the summary. • Prepare and submit paperwork to Lahontan for the water discharge permit waiver. • Work together with TDPUD personnel in the development of the contractors bid document and selection of the well drilling contractor. • Provide on-site supervision and data collection during the drilling of the proposed production well. • Provide on-site supervision and data collection during the pump development and pumping test program. • Evaluate data collected from the drilling and pumping tests programs. • Prepare the report summarizing all activity and containing findings and recommendations. The above is a brief summary of the activity to be covered under this proposed scope of work. The following is a more detail summary of each proposed task and a cost estimate to perform the described work. Scope of Work Task 1 During Task 1, AquA will prepare and submit to Lahontan the application for the waste (water) discharge permit waiver. As part of the preparation a site visit will be conducted for the purpose of photographing the proposed well-site and proposed sprinkler/recharge area along with the small detention facility. After the submittal of the paperwork to Lahontan, AquA will track the process and take care of questions as they arise. Also as part of Task 1, AquA will put together the drilling and pumping tests bid documents and provide the documents to the TDPUD to be sent out to qualified drilling and pumping contractors. A pre-bid meeting has been scheduled and AquA will attend that meeting to answer questions regarding the drilling and pumping programs. A site visit is also scheduled and AquA will be there to answer questions. After the completed bids are returned to the TDPUD, AquA will help evaluate both the drilling and pumping bids and provide a recommendation to TDPUD for each of the two bids for their consideration. P.O Box 18793 0 Reno Nevada 98511 & (775)250-9700 0 Fax(775)847 0946 0 Email:DavidE(adson4msn eom 0Web.www aquageroundwalercom Task 2 AquA personnel will provide field supervision and data collection during the drilling and construction of the production well. These activities will include geologic logging of the borehole to its proposed depth of 1,200 feet, accounting for drilling material used, recording drill rig activity, logging the time of the drilling to determine penetration rates, evaluation of downhole geophysical survey, and documenting drilling crew activities with respect to safety issues and maintaining a log of time spent for each activity that the drilling crew undertakes. After the drilling activity is completed, AquA personnel will be on-site during the construction of the well to ensure the well design is followed per specifications. During air-lift development data will be collected during each phase of development to ensure the well is developed as completely as possible using the air-lift technique. After the air-lift development phase is completed and the well-bore is clean AquA will oversee the plumbness test to be conducted on the well-bore and the downhole video survey. Task 3 This task will involve providing on-site supervision and data collection during the double/swab pump development, the test pump development program, and the pumping tests which will be conducted on the production well. Specifically, water quality samples will be collected every 40 feet during the double/swab pump development program. After the double''swab development is completed, a large capacity test pump will be installed and the well will be developed through surging at increased pumping rates until the discharge is free of sediment and the turbidity is measured to be less than 100 NTU's. After the pump development is completed, a step-drawdown test will be conducted to determine well efficiency and the pumping rate to be used during the constant-discharge test. The constant-discharge will involve pumping the well for 72-hours while monitoring the water level at the production well. After the pumping period is completed, water level at the production well will be monitored during the recovery period. Task 4 This task involves summarizing all of the activity and data collection that was completed under Tasks 2 and 3. In addition, the report will contain data analysis and recommendations regarding the production potential for the production well. Finally, aquifer parameters that are developed from pumping test analysis will be put into the regional ground water flow model to determine impacts both locally and on a regional scale. Cost Estimate Task 1 Permitting and Bid Documents activity Senior Hydrogeologist 48 hrs @$100/hr $4 800 Technician 8 hrs @$75/hr 600 Total $5,400 Task 2 Well Drilling Supervision and Data Collection Senior Hydrogeologist 64 hrs @$100/hr $6,400 Project Geologist 210 hrs ci< $80/hr 16,800 Field Technician 182 hrs @$75/hr 13,650 Per diem(15 days at$115/day/person) 3,450 Vehicle expense(15 days at$40/day/vehicle) 1,200 Total $41,500 Task 3 Pumping development and testing Senior Hydrogeologist 48 hrs @ $100/hr $4,800 Project Geologist 138 hrs @ $80/hr 11,040 Field Technician 138 hrs @ $75/hr 10,350 Per diem(10 days at $115/day/person) 2,300 Vehicle expense (10 days at $40/day/vehicle) 800 Total $29,290 Task 4 Evaluation and Reporting Senior Hydrogeologist 60 hrs @ $100/hr $6,000 Graphics Designer 40 hrs @ $85/hr 3,400 Total $9,400 Sub-Total $85,590 Contingency 10% $8,559 Project Total $94 149 If you have any questions regarding this proposed scope of work and cost estimate, please contact me at (775) 250-9700. Sincerely, David Carlson