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HomeMy WebLinkAboutMINUTES - 06021998 - C135 A Contra i TO: BOARD OF SUPERVISORS Costa' County FROM: WATER COMMITTEE Supervisor Joe Canciamilla, Chair Supervisor Gayle B.Ui trema [SATE: June 2, 1998 SUBJECT: REPORT ON COUNTY PARTICIPATION IN EAST COUNTY WATER MANAGEMENT ASSOCIATION'S GROUNDWATER STUDY IN THE EAST COUNTY AREA SPECIFIC REQUEST(S) OR RECOMMENDATION(S) & BACKGROUND AND JUSTIFICATION RECOMMENDATIONS 1. AUTHORIZE CHAIR to sign the Agreement for Sharing Costs of a Hydrogeological Ground Water Investigation. 2. AUTHORIZE up to $10,000 of Water Agency funds to be used for the County's pro-rated share of this study (see attached detail). 3. DIRECT the AUDITOR to release these funds. FISCAL IMPACT Up to $10,000 of County Water Agency funds would be used to fund the County Water Agency's participation in this study. Funds have been budgeted`'for this purpose. CONTINUE© ON ATTACHMENT: ✓ _YES SIGNATURE RECtyMMENDATiON 5F COUNTY ADMINISTRATOR RECONIMMATIOR OF<BOARE COMMITTEE -------- APPROVE _ OTHER t SIGNATURES): Su - or Joe Canciamilla Chair Sue }.sor G I B. Ullkerna nvmsv�ACTION OF:BOARD ON APPROVED AS RECOMMENDED )_ OTHER VOTE OF SUPERVISORS I HEREBY CERTIFY THAT THIS IS A TRUE x UNANIMOUS (ABSENT AND CORRECT COPY OF AN ACTION TAKEN AYES:—_.—__ NOES:__ ___—..__ AND ENTERED ON THE MINUTES OF THE ABSENT:_—__ABSTAIN:_._. _ BOARD OF SUPERVISORS ON THE DATE SHOWN. Contact: Roberta Goulart(5101335-9226) ATTESTED_,i1.g cc: Community [development Department (CDD) PHIL.BATCHELOR, CLERK OF Auditor-Controller THE BOARD OF SUPERVISORS County Counsel AND C OUN'€YADMINISTRATOR B _ _ DEPUTY RG1998:WCGR vaso Page 2 BACKGROUND/REASONS FOR RECOMMENDATION A Phase II East County Water Supply Management Study was completed in September 1996, and detailed several alternatives to meet future water needs. The E'CWMA, through its Governing Board and its Joint Managers Committee (11 agencies in the east county area), has been meeting to determine next steps by which to implement recommendations contained in the Phase 11 Report. The issue of a groundwater management plan was determined to be the logical first step. Work has commenced to determine potential scope and content of this study, as well as determination of the level of interest of the member agencies. To date, it appears that the City of Brentwood,the East Contra Costa Irrigation District, Diablo Water District, and Sanitation District 19(with funding through the Hoffmann Co) are the other participants in this study. The Groundwater study is considered important in order to gain some degree of certainty as to firm groundwater yields, for areas dependant upon groundwater resources. In some areas of east County, even the source of some (major) aquifers are unknown, due to complex geology and differing aquifer sources at different depths. The potential for conjunctive use (a program for underground aquifer storage and use) as a method to provide firm supply during shortages and/or dry years couldbe an important component of a groundwater study and could be an essential element of an overall east county plan for future water supply. This study is a good first step, assimilating existing information and providing needed details as well as determining where additional study may become necessary. (See attached). LUHCORFF SCALMANINI � _ ,., Su _ MAY 1 9 i�98 May 15, 199$ File No. 97-1-131 Mr. Paul Eldredge City of Brentwood 708 Third Street Brentwood, CA 94513-1395 SUBJECT': PROPOSAL TO CONDUCT HYDROGEOLOGICAL INVESTIGATION GROUND-WATER RESOURCES IN THE EASTERN CONTRA COSTA COUNTY AREA Dear Mr. Eldredge: As a follow up to our meeting on December 11, 1997,we are pleased to provide this proposal to conduct an investigation of the extent, characteristics, and potential yield of the ground-water system in the Brentwood and surrounding area. From our meeting,we understand that your primary interests include answering such questions as: 1. What is the areal extent of the ground-water system in the study area? How is the aquifer system vertically divided and distributed? 2. Is the ground-water system in study area hydraulically connected to that in Discovery Bay to the east or Oakley to the north? 3. What are the characteristics of the ground-water system in terms of quantity and quality of water? 4. How is ground water recharged? How does groundwater discharge, or flow out of the area? 5. Is the ground-water system overdrafted? 6. Can more ground water be developed? How much? Where? Our proposed scope of work is aimed at answering these questions to the degree that available data permits. Where information is limited, we will outline measures that the study participants should Mr. Paul Eldredge May 15, 1998 Page 2 take to improve their understanding of ground water in the study area. Our proposal is described in the following sections starting with a discussion of the general scope of work, details of individual tasks, and an estimated budget and schedule. Resumes of the principal investigators who will be involved in the study are also included for your reference. Scope of Investigation The scope of the proposed ground-water investigation encompasses a review and interpretation of existing data concerning ground water in the study area. The area of study will extend to and include Discovery Bay to the east of Brentwood and Oakley to the north. As you know, LSCE has already performed a detailed geologic study to describe the aquifer system within the Brentwood city limits as a basis for selecting potential sites for test hole drilling and possible new well construction. As a result,the new work will focus on gathering and adding new information from Discovery Bay and Oakley and merging it with our current understanding and description of geology and the aquifer system within Brentwood. The geologic interpretation will be used in conjunction with information about wells to describe the important hydrogeologic features of the region as they relate to ground-water quantity and quality. Furthermore,the work will be used to describe how the ground-water system is recharged,whether there is hydraulic continuity throughout the study area,and what the capacity is for additional development. Although the scope of the proposed investigation does not include any new drilling,or testing, of any wells,the City's exploration efforts in connection with development of Well 14 will serve as an important source of information on the occurrence of aquifer units and variations in water quality within the City of Brentwood. We will incorporate the results of this work,as,well as other work we have performed in connection with water supply development in and around Discovery Bay, into the new study. We will also seek other information related to water supply development in the Oakley area in an effort to produce the most complete analysis possible. Where data is a limiting factor, we will identify the measures necessary to overcome any key deficiencies. Our approach to this investigation is one which we have developed through our experience with exploring and developing ground water over the past two decades. It consists of a series of sequential tasks aimed at addressing fundamental questions about the occurrence of ground water and subsequently answering the specific issues facing each of the various agencies and communities within the study area today. The proposed work will culminate with a final report on findings and recommendations. Descriptions of each of the tasks and cost estimates for budgeting purposes are contained in the following sections. '..(.3!-eCCPFF &SC.4LMANIM a ; Mr. Paul Eldredge May 15, 1398 Page 3 Description of Tasks Our investigation of ground water in Brentwood,including Discovery Bay and Oakley, will focus on the specific questions cited above concerning the extent of the aquifer system,its continuity from one city(or area)to the next,the quantity and quality of ground water, and current conditions and the potential for additional development. The approach, consisting of a series of distinct tasks,will utilize existing data from various sources. A pre-assessment task is included for the purpose of identifying sources and gathering data as well as the important step of creating a base map to serve subsequent interpretation and presentation of results. The next task, Geologic Description, is designed to develop a physical representation of the ground-water system that is fundamental to understanding the occurrence of ground water, deciphering the distribution of high yielding aquifer units and ground-water quality,and assessing hydraulic issues such as the mechanism of ground- water recharge. The latter items are addressed in the subsequent two tasks, Ground-Water Occurrence and Water Balance Components. A report on findings and recommendations will then be prepared under the final task. Additional details are provided below. Task 1. Pre Assessment Under Task 1, LSCS will compile background information related to ground water in the target study areas including patterns of water use,existing water supply sources, all available historical water level and water quality data, and information on the anticipated future demands on the system. Water well drillers reports will be searched and reviewed at the State Department of Water Resources for inclusion on a set of geologic cross sections which will be used to describe and interpret geologic relationships. A base map will be developed that will serve to show cross section locations, well locations,to map aquifer and water quality characteristics,to describe recharge locations, and to contour water levels and show ground-water flow direction. The key work products for Task 1 will be an electronic base map and compilations of available water well drillers reports,water levels, locations and information pertaining to major municipal and agricultural wells,water quality and other water supply-related information retained by the major water suppliers in the study area. Task 2: Geologic Description Under Task 2, LSCE will interpret well log data to modify and extend previous geologic interpretations in Brentwood out to Discovery Bay and Oakley. Where data permits,the key interpretation tools will be geologic cross sections, fence diagrams,and various isoline maps such as isopachs (contours of equal thickness)or isoliths(contours delineating various formation types). II_Ut-4C0RF=F 6 SCa+._VANINI Mr. Paul Eldredge May 13, 1998 Page 4 Where appropriate, the study area geology will be tied to regional relationships to explain possible recharge and outflow influences on the ground-water system and the physical limits of the aquifers. The key work product for Task 2 will be a written description of the geology in the study area with associated maps and cross sections. Tusk 3: Ground-Water Occurrence Under Task 3,LSCE will address two key aspects of ground-water occurrence: quantity and quality, Using available information about well yields and the geologic description from Task 2,patterns of well yields will be analyzed to identify production characteristics of various aquifer units. Where possible,maps will be developed to illustrate the extent and characteristics of these units. Estimates of aquifer Characteristics will be made based on the well information and any available testing results. Based on estimated aquifer characteristics, calculations will be performed to determine constraints on groundwater development posed by mutual pumping impacts. This analysis will ultimately be used to develop conclusions regarding the potential for the aquifer system to meet greater pumping capacities. Water quality data will be used to identify the characteristics of ground-water in areal and vertical directions. The principal purpose of this sub task is to delineate regions of potential future ground- water development, target depths, and the mechanisms of any potential degradation. The key water quality constituents that will be studied are iron,manganese,nitrate, and totaldissolved solids. A key degradation mechanism that will be considered is the movement of nitrate contamination downward as a result of either natural percolation or induced movement through the impacts of pumping. The key work products for Task 3 will be the delineation of aquifer units with respect to yield(i.e., quantity) and water quality. Where data permits,maps will be used to illustrate the distribution of aquifer and ground-water quality characteristics. Task 4. Water Balance Components Under Task 4, LSCE will use information and interpretations from Tasks 1-3 to identify major inflow and outflow components of the ground-water system. Hydrographs of ground-water levels will be prepared to describe historical trends and to initially assess whether overdraft conditions are apparent. At selected periods,preferably during wet and dry conditions if data permit, contour maps dpqwfft '7JHIC0Rr- 6 SCALMANINI Mr. Paul Eldredge May 15, 1998 Page 5 of equal ground-water elevation will be prepared to depict ground-water flow directions and to define changes that have occurred in response to recharge and/or historical use (pumpage). Similarly,depending on available data, ground-water quality will be analyzed to describe its changes over time, including distribution among aquifer units(vertical differences)and areally(i.e., differences across the study area). Water level and water quality data will be;interpreted together to describe anticipated changes as recharge,pumping, or other flow components might affect existing patterns of ground-water quality. Based on these efforts,the potential limits on the capacity of the system will be estimated as well as mutual interference (i.e.,impacts caused by competing development interests). Broad conclusions regarding the safe yield of the aquifer system will also be developed and possible measures (e.g., more data collection,modeling)to refine these conclusions in the future will be identified. The key work products for Task 4 will be identification of the principal inflow and outflow components of the ground-water system in the study area. If data permits,water level and water quality hydrographs and contour maps will be prepared to illustrate current,and past conditions and the existence of any significant impacts caused by past use patterns. Task 5: Findings and Recommendation Under Task 5,LSCS will use the results of the preceding tasks to develop specific responses to the questions concerning the extent of the aquifer system, the quantity and quality of ground water,the current state of the ground-water system, and the potential for additional water supply development that might be accomplished without adverse impacts on existing supplies or ground-water resources in general. The key work product for Task 5 is a final report documenting the results of Tasks 14. Budget and Schedule The following table summarizes the estimated budget,by task,for the proposed investigation. We have included a budget item for project management to accommodate meetings,responses to questions by the City and ECOID, interim reporting, and general administrative requirements which are separate from the scope of the five tasks described above. LUF ffl FrF SCALMANINI Mr. Paul Eldredge May 15, 1998 Page 6 Task Description Budget Estimate($) 1 Pre-Assessment $11,700 2 Geologic Description 16,900 3 Ground-Water Occurrence 16,300 4 Water Balance 11,400 5 Findings and Recommendations 8,700 Project Management 5,000 $70,000 The budget estimates presented above are based on LSCE's Schedule of Fees for Engineering and Field Services, a copy of which is attached for reference. Also attached are individual project estimate worksheets for each of the five tasks which show the cost breakdown according to hours and jot- category. The following table shows the interrelationships between each task using a target completion time of 12 weeks from a notice to proceed. Week Description 1 Z s < S L 1 s ! 10 11 13 Task 1 Pre-Assessment Task 2 Geologic Description Task 3 Ground-Water Occurrence Task 4 Water Balance Components Task 5 Findings and Recommendations Project Managements is _Ur 4= FtF E SCALMAN;1 yr Mr. Paul Eldredge May 1 S, 1998 Page 7 Principal Investigators The principal investigators for the proposed work are listed below: Joseph C. Scalmanini--Principal-in-Charge Mr. Scalmanini has thirty years of experience in ground-water development and management, and oil and gas production. He has been involved with assessments of ground-water resources and implementation of ground-water basin management in various areas of California;ground-water development and management encompassing well design,construction,operation, and maintenance; ground-water monitoring as part of basin management and as part of ground-water contamination investigations; artificial ground-water recharge facilities and practices; injection of industrial waste water; utilization of brackish ground water for industrial water supply and cooling applications. He has experience with industrial design,construction and operation of secondary oil recovery systems involving water and steam processing, injection and recovery. Kenneth W. Utley---GeoIogic Description Mr.Utley has twenty years of experience in engineering geology including definition of geologic and lithologic features in ground-water basins and investigation and definition of areal and vertical extent of aquifers. In the Brentwood area, Mr. Utley has conducted a geologic assessment of the distribution of aquifer units for exploration and water supply development purposes. This work would be expanded under this proposal. He has also prepared geologic and lithologic descriptions from formation samples and geophysical logs for ground-water development and ground-water contamination studies throughout the State. He has investigated erosional processes,landslides,and stream hydrology;designed and implemented erosion-control projects on steep mountainous terrain; and conducted detailed sail and sedimentary mapping for seismic safety. Thomas D.Elson--Ground-Water Occurrence and Project Management Mr. Elson has eighteen years of experience in water resource and petroleum industries, including exploration,development,and well operations. Over the past two years,he has conducted a review of the City of Brentwood's municipal water supply system, overseen well rehabilitations,well tests, and developed an exploration plan for further water supply development. Mr. Elson also has extensive experience with well technology, including research and development of sand control methods and production logging to evaluate well problems. He has prepared well designs, performed construction administration and technical support for well projects throughout California and in various areas throughout the United States and Overseas. Nownft LUHMCFFF &SCALVIANINI Mr. Paul Eldredge May 15, 1998 Page 8 William L. Halligan Water Balance Components Mr. Halligan's experience includes development and construction of site specific and regional ground-water flow models; evaluation and assessment of regional hydrologic'conditions;evaluation of soil and ground-water quality; soil and hydrogeologic assessment, investigation, and remediation of contaminated sites. We appreciate the opportunity to provide this proposal. We would be happy to answer any questions you may have and are prepared to proceed at your direction. Sincerely, LUHDORFF AND SCALMANINI CONSULTING ENGINEERS 4ueL e Joseph C. Scalmanini -'111t Thomas D. Elson TDE/lb Enclosures c.c.. Mr. Paul Causey,Delta Diablo Sanitation District Mr. Larry Preston, East Contra Costa Irrigation District Mr. Mike Yreka,Diablo Water District LyH-GCPPP 6 SCALMANINI gAC:yyirplleaR POS-1\87-I.lal.revimdPmpaal.wpd PROJECT ESTIMATE WORKSHEET CLIENT: City of Brentwood/ECCID LUHDORFF AND SCALMANINI PROJECT: Ground-Water investigation CONSULTING ENGINEERS FILE NO: '97-1-131 EST BY: TDE TASK 1:Pre-Assessment Hourly Estimated Estimated Rate Hours Cost PROFESSIONAL STAFF: Senior Principal $170.00 8 $1,360.00 Prin.Professional $125.00 $0.00 Project Manager $115.00 $0.00 Senior Professional $110.00 24 $2,640.00 Project Professional $88.00 8 $704.00 Staff Professional $76.00 40 $3,040.00 Engineering Inspector $72.00 $0.00 Engineering Assistant $63.00 16 $1,008.00 TECHNICAL STAFF: Environmental Technician $70.00 $0.00 Technician $66.00 $0.00 GW Sampling Equipment (incl.operator) $90.00 $0.00 ACRD Drafting $63.00 40 $2,520.00 Standard Drafting $55.00 $0.00 CLERICAL STAFF: Clerical $40.00 8 $320.00 TOTAL LABOR $11,592.00 $11,592.00 DIRECT EXPENSES: LSCE Expenses 1. Air Travel(hrs.) @ 240.00 $0.00 2. Ground Travel(mties) 200 @ 0.45 $90.00 3. Subsistence(overnight) 90.00 $0.00 4. Subsistence(days) 1 30.00 $30.00 5. Miscellaneous Supplies $0.00 6. Data Loggers(ea/day) @ 25.00 $0.00 $120.00 Overhead(15%)Items 3-5 $4.50 Total LSCE Expenses $124.50 Outside Services 1. $0.00 2. $0,00 Administration Fee(i5%) $0.00 Total Outside Services $0.00 TOTAL DIRECT EXPENSE $124.50 $124.50 TOTALPRICE FOR TASK .............................................................................................................. $11,716.50 'Staff Professional:Engineer,Hydrologist,Hydrogeologist,Geologist 05/15/98 C:ITDEIIECVlWMAssoclGround-Water Studylprojectest.wb3 PROJECT ESTIMATE WORKSHEET CLIENT: City at Brentwood/ECCID LUHDORFF AND SCALMANINI PROJECT: ground-Water Investigation CONSULTING ENGINEERS FILE NO: 97-1-131 EST BY: TDE TASK 2: Geologic description Hourly Estimated Estimated Rate Hours Cast PROFESSIONAL STAFF: Senior Principal $170.00 8 $1,360.00 Prin.Professional $125.00 $0.00 Project Manager $115.00 $0.00 Senior Professional $110.00 100 $11,000.00 Project professional $88.00 $0.00 Staff Professional $76.00 16 $1,216.00 Engineering''Inspector $72.00 $0.00 Engineering Assistant $63.00 8 $504.00 TECHNICAL STAFF: Environmental Technician $70.00 $0.00 Technician $66.00 $0.00 GW Sampling Equipment (incl.operator) $90.00 $0.00 ACAD Drafting $63.00 40 $2,520.00 Standard Drafting $55.00 $0.00 CLERICAL STAFF: Clerical $40.00 4 $160.00 TOTAL LABOR $16,760.00 $16,760.00 DIRECT EXPENSES: LSCE Expenses I. Air Travel(hrs.) 240.00 $0.00 2. Ground Travel(miles) 200 0.45 $90.00 3. Subsistence(overnight) @ 90.00 $0.00 4. Subsistence(days) 1 @ 30.00 $30.00 5. Miscellaneous Supplies $0.00 6. Data Loggers(ealday) @ 25.00 $0.00 $120.00 Overhead(15%)Items 3-5 $4.50 Total LSCE Expenses $124.50 Outside Services 1. $0.00 2. $0.00 Administration Fee(15%) $0.00 Total Outside Services $0.00 TOTAL DIRECT EXPENSE $124.50 $124.50 TOTALPRICE FOR TASK ............................................................................................................. $16,884.50 `Staff Professional:Engineer,Hydrologist,Hydrogeologist,Geologist 05115198 C:\TDEf\ECWMAssoc\Ground-Water Study\projectest.wb3 PROJECT ESTIMATE WORKSHEET CLIENT: City of Brentwood/ECCID LUHDORFF AND SCALMANINI PROJECT Ground-Water Investigation CONSULTING?ENGINEERS FILE NO: 97-1-131 EST BY: TDE TASK 3: Ground-Water Occurrence Hourly Estimated Estimated Rats Hours Cast PROFESSIONAL STAFF ..._ Senior Principal $170.00 8 $1,360.00 Prin.Professional $125.00 $0.00 Project Manager $115.00 $0.00 Senior Professional $110.00 100 $11,000.00 Project Professional $88.00 $0.00 Staff Professional $76.00 16 $1,216.00 Engineering inspector $72.00 $0.00 Engineering Assistant $63.00 8 $504.00 TECHNICAL STAFF: Environmental Technician $70.00 $0.00 Technician $66.00 $0.00 GW Sampling Equipment (incl.operator) $90.00 $0.00 ACAD Drafting $63.00 32 $2,016.00 Standard Drafting $55.00 $0.00 CLERICAL STAFF: Clerical $40.00 4 $160.00 TOTAL.LABOR $16,256.00 $16,256.00 DIRECT EXPENSES: LSCE Expenses 1. Air Travel(errs.) 240.00 $0.00 2. Ground Travel(miles) @ 0.45 $0.00 3. Subsistence(overnight) @ 90.00 $0.00 4. Subsistence(days) @ 30.00 $0.00 5. Miscellaneous Supplies $0.00 6. Data Loggers(ea/day) @ 25.00 $0.00 $0.00 Overhead(15%)Items 3-5 $0.00 Total l.SCE Expenses $0.00 Outside Services 1. $0.00 2. $0.00 Administration Fee(15%) $0.00 Total Outside Services $0.00 TOTAL DIRECT EXPENSE $0.00 $0.00 TOTALPRICE FOR TASK ............................................................................................................. $16,256.00 'Staff Professional:Engineer,Hydrologist,Hydrogeologist,Geologist 05/15198 C:1TDEf1ECWMAssoclGround-Water Studyipmjectest.wb3 PROJECT ESTIMATE WORKSHEET CLIENT: City of Brentwood/ECCID LUHDORFF AND SCALMANINI PROJECT:Ground-Water Investigation CONSULTING ENGINEERS FILE NO: 97-1-131 EST BY: ME TASK 4:Water Balance Components Hourly Estimated Estimated Rate Hours Cost PROFESSIONAL STAFF`': � .. Senior Principal $170.00 8 $1.360.00 Prin.Professional $125.00 $0.00 Project Manager $115.00 $0.00 Senior Professional $110.00 24 $2,200.00 Project Professional $88.00 56 $4,928.00 Staff Professional $76.00 $0.00 Engineering Inspector $72.00 $0.00 Engineering Assistant $63.00 12 $756.00 TECHNICAL STAFF. Environmental Technician $70.00 $0.00 Technician $66.00 $0.00 GW Sampling Equipment (incl.operator) $90.00 $0.00 ACAD Drafting $63.00 32 $2,016.00 Standard Drafting $55.00 $0.00 CLERICAL STAFF: Clerical $40.00 4 $160.00 TOTAL LABOR $11,420.00 $11,420.00 DIRECT"EXPENSES: LSCE Expenses 1. Air Travel(hrs.) @ 240.00 $0.00 2. Ground Travel(miles) C 0.45 $0.00 3. Subsistence(overnight) @ 90.00 $0.00 4. Subsistence(days) @ 30.00 $0.00 S. Miscellaneous Supplies $0.00 6. Data Loggers(satday) Cgs 25.00 $0.00 $0.00 Overhead(15%)Items 3-5 $0.00 Total LSCE Expenses $0.00 Outside Services 1. $0.00 2. $0.00 Administration Fee(15%) $0.00 Total Outside Services $0.00 TOTAL DIRECT EXPENSE $0.00 $0.00 TOTALPRICE FOR TASK ..................................................»..................................................1....... $11,420.00 'Staff Professional:Engineer,Hydrologist,Hydrogeologist,Geologist 05/15198 C:1TDEf1ECWMAssoclGround-Water Studyiprojectest.wb3 PROJECT ESTIMATE WORKSHEET CLIENT: City of Brentwood/ECGID LUHDORFF AND SCALMANINI PROJECT: Ground-Water Investigation CONSULTING ENGINEERS FILE NO: 97.1-131 EST BY: TDE TASK 5: Findings and Recommendations Hourly Estimated Estimated Rate Hours Cost PROFESSIONAL STAFF: ---------- Senior Principal $170.00 8 $1,360.00 Prin.Professional $125.00 $0.00 Project Manager $115.00 $0.00 Senior Professional $110;00 40 $4,400.00 Project Professional $88.00 $0.00 Staff Professional $76.00 16 $1,216.00 Engineering Inspector $72.00 $0.00 Engineering Assistant $63.00 $0.00 TECHNICAL STAFF: Environmental Technician $70.00 $0.00 Technician $66.00 $0.00 GW Sampling Equipment (Incl.operator) $90.00 $0.00 ACAD Drafting $63.00 20 $1,260.00 Standard Drafting $55.00 $0.00 CLERICAL STAFF: Clerical $40.00 12 $480.00 TOTAL,LABOR $8,716.00 $8,716.00 DIRECT EXPENSES: LSCE Expenses 1. Air Travel(hrs.) @ 240.00 $0.00 2. Ground Travel(miles) C 0.45 $0.00 3. Subsistence(overnight) @ 90.00 $4.00 4. Subsistence(days) C 30.00 $0.00 5. Miscellaneous Supplies $0.00 6. Data Loggers(ea/day) @ 25.00 $0.00 $0.40 Overhead(15%)Items 3-5 $0.00 Total LSCS Expenses $0.00 Outside Services 1. $0.00 2. $0.00 Administration Fee(15%) $0.00 Total Outside Services $0.00 TOTAL DIRECT EXPENSE $0.00 $0.00 TOTALPRICE FOR TASK .................................................................................................. ..... $8,716.00 'Staff Professional:Engineer,Hydrologist,Hydrogeologist,Geologist 05/15198 C:kT0EftECWMAssoclGround-Water Studyiprojectest.wb3 .......11.11,................................................................................................. ........... ....... .......... .......................................................... �0 NO 21 PIN 2: 56 DIABLO WATER ST C' P.O.-Box 127 May 27, 1998 2107 Ma;n St. Oakley,t,A 94361-0127 510-625.3798 FaX 510.625.0`31 A Ms. Roberta Goulart DirectorAlien s: V.Waace Contra Costa Water Agency ll John H.defternery J 651 Pine Street Leonard Celoni Kenneth L.--rockett 4th Floor, North Wing Howard Hobbs Martinez, CA 94553 anorai Manager &Secretary: Subject: Ground Water Study - Cost Sharing Agreements Mike Yeraka Attorney: Dear Roberta: Frederick Bold Jr. Enclosed are five originals of the East County Ground Water Study - Cost Sharing Agreement. Please have each copy signed by the County and forward them to Paul Eldredge, Assistant Engineer at the City of Brentwood. He will then have them signed and distribute an original to each of us. Sincerely, Mike Yerak-a, P.E. General Manager Encl. cc: Paul Eldredge, Brentwood AGREEMENT FOR SHARING COSTS OF A HYDROGEOLOGICAL GROUND WATER INVESTIGATION This agreement is entered into this day of , 1998,by and between the City of Brentwood("Brentwood"), Contra Costa Sanitation District Number 19("SD19"),East Contra Costa Irrigation District("ECCID"),Diablo Water District("DWD"), and such other entities that may become parties to this agreement,all referred to herein as"agencies." 1. Pu=se The purpose of this agreement is to establish the basis for sharing the costs of the hydrogeological ground water investigation("the study")to be performed by Luhdorff & Scalamini("LS")in the area in eastern Contra Costa County as stated in the proposal by LS to Brentwood dated May 15, 1998. 2. Brentwood's 11nderta1dna Within 30 days after execution of this agreement by the four original agencies named above Brentwood shall enter into an agreement with LS to perform the study in accordance with said proposal at a cost not to exceed$70,040, and shall administer said agreement, and shall make all payments due thereunder from the money deposited in accordance with section 3 hereof. 3. Apporti nment andel Deposit of Costs Within ten days after Brentwood enters into said agreement with LS each of the four original agencies shall deposit with Brentwood its respective allocation of the cost of the study,as follows: AM= Brentwood $20,000 SD19 20,000 ECCID 20,000 DWD 10,000 s Total $70,000 In the event Contra Costa County("County")becomes a party to this agreement the cost allocations and deposits of the agencies shah be adjusted to be as follows: z , Auna Amount Brentwood $17,500 SD19 17,500 ECCID 17,500 DWD 8,750 County 8,750 Total $70,000 In the event another public entity shall,with the consent of each agency,become a party to this agreement, the costs shall be reapportioned and the new party shall pay all additional casts of the study thereby incurred. Upon completion of the study and full payment to LS any remaining deposit with Brentwood shall be refunded to the agencies in proportion to the amount contributed by each. 4. Amendment This agreement may be amended only by a written instrument signed by each agency. IN WITNESS WHEREOF each of the agencies has executed this agreement by their respective officers thereunto duly authorized as of the date first above written. City of Brentwood -Contra Costa Sanitation D strict�I�Io. By By Title Title nnic U1c 11 o'vl�'y Date signed Date signed t East gation (strict Di?67161-,1e1Zfi(- a r 'ct By By {tle r Tit &\ z Date signed Date signed 5` Z r 8 Contra Costa County Date signed r y By Titlef^a�4- ...I..............I...........................................................................................................................I.......................... . . ............................... AGREEMENT FOR SHARING COSTS OF A HYDROGEOLOGICAL GROUND WATER INVESTIGATION This agreement is entered into this_day of 1998,by and between the City of Brentwood ("Brentwood"), Contra Costa Sanitation District Number 19(11 SDI 9"), East Contra Costa Irrigation District ("ECCID"), Diablo Water District("DWD"), and such other entities that may become parties to this agreement, all referred to herein as "agencies." I!url2os The purpose of this agreement is to establish the basis for sharing the costs of the hydrogeological ground water investigation ("the study")to be performed by Luhdorff & Scalamini ("LS")in the area in eastern Contra Costa County as stated in the proposal by LS to Brentwood dated May 15, 1998. 2. Brentwood's Undertaking Within 30 days after execution of this agreement by the four original agencies named above Brentwood shall enter into an agreement with LS to perform the study in accordance with said proposal at a cost not to exceed $70,000, and shall administer said agreement, and shall make all payments due thereunder from the money deposited in accordance with section 3 hereof 3. Apportionment and DCUQsil of Cusla Within ten days after Brentwood enters into said agreement with LS each of the four original agencies shall deposit with Brentwood its respective allocation of the cost of the study, as follows: Agmy Amount Brentwood $20,000 SD 19 20,000 ECCID 20,000 DWD 10,000 Total $70,000 In the event Contra Costa County("County")becomes a party to this agreement the cost allocations and deposits of the agencies shall be adjusted to be as follows: Amu Amount Brentwood $17,500 SD 19 17,500 ECCID 17,500 DWD 8,750 County 8,750 Total $70,000 In the event another public entity shall, with the consent of each agency, become a party to this agreement, the casts shall be reapportioned and the new party shall pay all additional costs of the study thereby incurred. Upon completion of the study and full payment to LS any remaining deposit with Brentwood shall be refunded to the agencies in proportion to the amount contributed by each. 4. Am=tm= This agreement may be amended only by a written instrument signed by each agency. IN WITNESS WHEREOF each of the agencies has executed this agreement by their respective officers thereunto duly authorized as of the date first above written. City of Brentwood Contra Costa Sanitation District No. 19 By By Title Title Date signed Date signed East Contra Costa Irrigation District Diablo Water D* ' By By Title Title Date signed Date signed / l Contra Costa County Date signed J u n e 2 . 1998 Byt /w�.r ^ _, Title haa.. 3 a sl_ o� —uPervisors