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2009/04/14 City Council Resolution 2009-32RESOLUTION NO. 2009 -32 A RESOLUTION OF THE.CITY COUNCIL OF THE CITY OF ROHNERT PARK AUTHORIZING AND APPROVING THE FOURTH AMENDED COOPERATIVE AGREEMENT BETWEEN AND AMONG THE SONOMA COUNTY WATER AGENCY, THE COUNTY OF SONOMA, THE CITIES OF COTATI, ROHNERT PARK, SANTA ROSA, AND SEBASTOPOL, THE TOWN OF WINDSOR, AND CAL AMERICAN WATER COMPANY TO PROVIDE FUNDING AND SUPPORT INFORMATION FOR THE SANTA ROSA PLAIN GROUNDWATER STUDY WHEREAS, on April 13, 2004, the City Council of the City of Rohnert Park approved Resolution No. 2004 -90 approving letter from the City to the Sonoma County Water Agency ( "SCWA ") to state its interest in participating in the Santa Rosa Plain Groundwater Study with SCWA and other agency participants; WHEREAS, Resolution No. 2005 -48 was adopted by Council on February 22, 2005, approving the original Cooperative Agreement to Provide Funding and Support Information for the Santa Rosa Plain Groundwater Study ( "Cooperative Agreement "); WHEREAS, on October 24, 2006, Council adopted Resolution No. 2006 -254 authorizing the First Amended Cooperative Agreement to provide funding for the second year of the study; WHEREAS, Resolution No. 2007 -54 was adopted by Council on April 10, 2007, authorizing the Second Amended Cooperative Agreement to fund additional second year work proposed by the United States Geological Survey ( "USGS "); and WHEREAS, the City Council adopted Resolution No. 2008 -04 on January 8, 2008, authorizing the Third Amended Cooperative Agreement to provide funding for the third year of the five -year study. NOW THEREFORE BE IT RESOLVED by the City Council of the City of Rohnert Park that it does hereby authorize and approve the Fourth Amended Cooperative Agreement between and among the Sonoma County Water Agency, the County of Sonoma, the Cities of Cotati, Rohnert Park, Santa Rosa, and Sebastopol, the Town of Windsor, and Cal American Water Company to provide funding and support information for the Santa Rosa Plain Groundwater Study. BE IT FURTHER RESOLVED that the Mayor is hereby authorized and directed to execute this Fourth Amended Cooperative Agreement in substantially similar form to the attached agreement for and on behalf of the City of Rohnert Park. DULY AND REGULARLY ADOPTED this 14'h day of April, 2009. ROH ERr pq ATTEST: Rk CITY OF ROHNERT PARK 44 0 1 Clerk :!11 L IFORNI1 BELFORTE: AYE CALLINAN: AYE MACKENZIE: AYE STAFFORD: AYE BREEZE: AYE AYES: (5) NOES: (0) ABSENT: (0) ABSTAIN: (0) crt: \ \fileserver\ data \techw \agreements \0304- 104d.doc version: 3/27/20093:28:00 PM TW 03/04 -104D Fourth Amended Cooperative Agreement to Provide Funding and Support Information for Santa Rosa Plain Groundwater Study This Agreement is made by, between, and among the Sonoma County Water Agency, ( "Agency'), and the County of Sonoma, City of Cotati, City of Santa Rosa, City of Sebastopol, City of Rohnert Park, Town of Windsor, and Cal American Water Company, a California Corporation, (collectively referred to as "Participants "). RECITALS A. Agency and Participants all utilize groundwater pumped from the Santa Rosa Plain Groundwater Basin ( "Basin ") and utilize the Basin for all or part of their municipal water supply. B.. A comprehensive study of the Basin was last completed in 1982 by the Department of Water Resources in cooperation with the Sonoma County Water Agency. C. Agency and the United States Geological Survey ( "USGS ") have proposed a study to evaluate the groundwater resources of the Basin. The objective of the study is to: (1) develop an updated assessment of the geohydrology, geochemistry, and geology of the Santa. Rosa Plain, including development of a Geographical Information System database, identification of annual pumpage quantities by sub -area, and estimated quantities and locations of annual recharge; (2) develop a multi- aquifer groundwater flow model for Santa Rosa Plain; and (3) evaluate the hydrologic impacts of alternative groundwater management strategies for the Basin. D. The base cost of the study is estimated to be approximately $2,048,000 over five years and could increase if the scope of work is expanded to include supplemental study activities. USGS has indicated the study may be eligible for up to $625,000 in federal matching funds over the five -year study period. Assuming the study qualifies for complete matching federal funds, a balance of $1,425,000 would be paid by participating co- funding agencies over the life of the study. E. Agency first entered into this agreement with USGS for the first year of the study, and Participants agreed to share in the funding responsibility for that year pursuant to the terms and conditions of the "Cooperative Agreement to Provide Funding and Support Information -for Santa Rosa Plain Groundwater Study" executed by Agency on August 17, 2005 ( "Original Agreement "). F. The purpose of the Original Agreement was to (1) provide a funding mechanism by which approximately $200,000 could be contributed to pay for the first year of the study of the Basin and (2) establish a working relationship among technical staff, together with tools and protocols that will be necessary for the success of additional studies as well as any future groundwater management strategies. G. Since execution of the Original Agreement, Agency and Participants found it desirable to amend. the Agreement to provide additional funding for the second year of study as identified herein and executed the First Amended Agreement dated December 14, 2006, in the amount of $333,266. Fourth Amended Cooperative Agreement to Provide Funding and Support Information for Santa Rosa Plain Groundwater Study H. Following technical review and discussion, Participants found it desirable to fund additional second year work proposed by the USGS, including collection of high- resolution seismic - reflection data in the Santa Rosa Plain, for an additional cost of $120,000, executed on May 15, 2007, as the Second Amended Agreement. USGS funded $60,000 and Participants funded $60,000, as described in Attachment A of this Agreement. I. Agency and Participants found it desirable to amend the Agreement to provide additional funding for the third year of study as identified in the Third Amended Agreement dated February 5, 2008, in the amount of $356,307. J. Agency and Participants find it desirable to amend the Agreement to provide additional funding for the fourth year of study as identified herein, in the amount of $319,242. K. Agency and Participants agree it is in the public interest to work cooperatively with other entities whose service areas or boundaries overlie the Basin. L. Agency and Participants have negotiated a projected cost sharing for the study based on groundwater usage and population served. M. This Agreement provides for funding the first, second, third, and fourth years only and neither Agency nor Participants are obligated to participate in further studies or to provide funds in other years. N. Upon execution of this Fourth Amended Agreement by all parties, all previous agreements and amendments are terminated superseded by this Fourth Amended Agreement. . AGREEMENT Agency and Participants agree as follows: 1. RECITALS The above recitals are true and correct. 2. LIST OF ATTACHMENTS AND ORDER OF PRECEDENCE The following attachments are incorporated by reference as though fully set forth herein, and in accordance with the provisions of this Agreement: 1) Attachment A: Cost Allocation 2) Attachment B: Study Description 3) Attachment C: Draft Joint Funding Agreement with USGS 4) Attachment D: Planned Study Work for Federal Fiscal Year 2009 In case of any conflict between the terms of the Agreement and the attachments, the terms of these documents control and prevail in the following order: 1) Agreement, 2) Attachment A, 3) Attachment D, 4) Attachment B, and 5) Attachment C .3. COMMUNICATION/DESIGNATED REPRESENTATIVES The persons identified below as the Designated Representative shall, upon execution of this Agreement, have authority to grant discretionary approvals identified in this Agreement. Except as otherwise specifically provided in this Agreement, any notice, submittal, or communication required or permitted to be served on a party, may be served by personal delivery to the person or the office of the person identified below. Service may also be made by mail, by placing first -class postage, and addressed as indicated below, and depositing in the United States mail to: Fourth Amended Cooperative Agreement to Provide Funding and Support Information for Santa Rosa Plain Groundwater Study 2 Agency City of Santa Rosa Project Manager: Marcus Trotta, P.G., C.H . Project Manager: Glen Wright PO Box 11628 Utilities Administration, 69 Stony Circle Santa Rosa, California 95406 Santa Rosa, California 95401 Phone: 707- 547 -1978 Phone: 707- 543 -3948 Fax: 707 - 524 -3782 Fax: 707 - 543 -3936 Email: Marcus.Trotta@scwa.ca.gov Email: gwright@s.rcity.org Designated Representative: Randy D. Poole Designated Representative: Richard Dowd City of Rohnert Park City of Sebastopol Project Manager: Darrin Jenkins, P.E. Project Manager: Susan Kell 130 Avram Avenue Engineering Department, 714 Johnson Street Rohnert Park, California 94928 Sebastopol, California 95472 Phone: 707 - 588 -2243 Phone: 707 -823 -2151 Fax: 707- 794 -9242 Fax: 707 - 823 -4721 Email: da"enkins @r ci .or Email: suekeHy@sonic.net Designated Representative: Stepheit R. M 64-1 SIh Designated Representative: Jack Griffin. City of Cotati Town of Windsor Project Manager: Damien O'Bid Project Manager: Craig Scott 201 West Sierra Avenue PO Box 100 Cotati, California 94931 -4217 Windsor, California 95492 Phone: 707 - 792 -4600 Phone: 707-838 -5978 Fax: 707- 795 -7067 Fax: 707 - 838 -5830 Email: dobid @ci.cotati.ca.us Email:. cscott@townofwindsor.com Designated Representative: Damien O'Bid Designated Representative: J. Matthew Mullan County of Sonoma Cal American Water Company Project Manager: John Maitland Project Manager: Andy Soule 2300 Coun Center Dr. Ste B 100 4701 Beloit Drive Santa Rosa, California 95403 Sacramento, California 95838 Phone: 707 - 565 -2528 Phone: 916- 568 -4212 Fax: .707-565-2620 Fax: 916- 568 -4286 Email. 'maitlal @sctainfo.or Email: asoule@amwater.com Designated Representative: Phillip Demery Designated Representative: Tom Bunosk 4. COST SHARING The estimated cost to complete the five -year groundwater study as outlined in this Agreement is $2,168,000. Participants and Agency shall share in the approximately $200,000 local share Year 1 cost of the study, approximately $393,000 for Year 2, approximately $356,307 for Year 3, and approximately $319,242 for Year 4 as listed in Attachment A and paragraph 7 and shall, for later years, consider amending this Agreement to provide the additional funding identified in Attachment A. Each Participant shall reimburse Agency as outlined in Attachment A of this Agreement, and Agency will pay USGS under a separate agreement. 5. THE STUDY The study is described in Attachments B and D. Fourth Amended Cooperative Agreement to Provide Funding and Support Information for Santa Rosa Plain Groundwater Study 3 6. AGENCY RESPONSIBILITIES A. Prepare and negotiate a proposed agreement with the USGS to provide funding to support the first year, second year, third, and fourth year of the groundwater study in generally the form attached as Attachment C. Renew the USGS agreement annually throughout the study period, provided Agency's Board of Directors determines that adequate Participant support continues. B. Act as liaison with USGS, prepare initial GIS data, and provide technical review, project management, and project coordination. This responsibility includes coordinating any necessary technical review meetings and providing at least quarterly status updates to Participants at such meetings and as needed. C. Coordinate with Participants and assist with data acquisition. D. Agency shall have no obligation to provide funding for the study after Year 1, Year 2, Year 3, and Year 4 except upon approval of Agency's Board of Directors or amendment of this Agreement. E. Distribute draft copies of any reports received from USGS to each Participant, notifying the Participants of any USGS requirement regarding confidentiality and distribute final copies of any reports received from USGS to each Participant. F. Distribute final reports to the public during the term of the study. G. If requested, assist Participants' staffs in making any presentations to Participants' governing boards regarding the study. H. Maintain complete and accurate records of all transactions in compliance with generally accepted accounting principles for enterprise accounting as promulgated by the American Institute of Certified Public Accountants and the Governmental Accounting Standards Board. Maintain complete project files with all correspondence, including letters and meeting notes. Such records shall be available to each Participant at all reasonable times for inspection and analysis. 7. PARTICIPANT RESPONSIBILITIES A. Year 1: Within 30 calendar days of notification by Agency that Agency has executed a contract with the USGS for Year 1, each Participant shall deposit with Agency its share for Year 1 of the study cost as described in Attachment A of this Agreement. B. Year 2: Within 30 calendar days of notification by Agency that Agency has executed a contract with the USGS for Year 2, each Participant shall deposit with Agency its share for Year 2 of the study cost as described in Attachment A of this Agreement. C. Year 2 Supplemental): Within 30 calendar days of notification by Agency that Agency has executed an amended contract with the USGS for Year 2 (Supplemental), each Participant shall deposit with Agency its share for Year 2 (Supplemental) of the study cost as described in Attachment A of this Agreement. D. Year 3: Within 30 calendar days of notification by Agency that Agency has executed a contract with the USGS for Year 3, each Participant shall deposit with Agency its share for Year 3 of the study cost as described in Attachment A of this Agreement. E. Year 4: Within 30 calendar days of notification by Agency that Agency has executed a contract with the USGS for Year 4, each Participant shall deposit with Agency its share for Year 4 of the study cost as described in Attachment A of this Agreement. F. Year 5: Participants shall have no obligation to provide funding for the study after Year 1, Year 2, Year 3, and Year 4 except pursuant to amendment of this Agreement. Fourth Amended Cooperative Agreement to Provide Funding and Support Information for Santa Rosa Plain Groundwater Study 4 G. Each Participant's Project Manager shall provide technical review and comment on draft work products and study results during the course of the study and shall attend technical review meetings to the extent practicable. The Participants shall maintain the confidentiality of any draft USGS reports to the extent Agency notifies them that such confidentiality is requested by the USGS, subject to Participants' obligations under the California Public Records Act. Each Participant shall make available to Agency, USGS and other Participants all technical data in its possession relevant to the groundwater study. H. Each Participant shall cooperate with Agency efforts to obtain additional funding for groundwater studies. 8.. ADDITIONAL REQUIREMENTS A. Authority to Amend Agreement: Changes to the Agreement may be authorized only by written amendment to this Agreement, signed by the Designated Representative of each party or such other representative as is authorized by the governing body of each party. B. No Waiver of Breach: The waiver by any party of any breach of any term or promise contained in this Agreement shall not be deemed to be a waiver of such term or promise or any later breach of the same or any other term or promise contained in this Agreement. C. Construction: To the fullest extent allowed by law, the provisions of this Agreement shall be construed and given effect in a manner that avoids any violation of statute, ordinance, regulation, or law. The parties covenant and agree that in the event that any provision of this Agreement is held by a court of competent jurisdiction to be invalid, void, or unenforceable, the remainder of the provisions hereof shall remain in full force and effect and shall in no way be affected, impaired, or, invalidated thereby. D. Making of Agreement: Participants and Agency acknowledge that they have each contributed to the making of this Agreement and that, in the event of a dispute over the interpretation of this Agreement, the language of the Agreement will not be construed against one party in favor of the other. Participants and Agency acknowledge that they have each had an adequate opportunity to consult with counsel in the negotiation and preparation of this Agreement. E. No Third -Party Beneficiaries: Nothing contained in this Agreement shall be construed to create and the parties do not intend to create any rights in third parties. F. Applicable Law and Forum: This Agreement shall be construed and interpreted according to the substantive law of California excluding the law of conflicts. Any action to enforce the terms of this Agreement or for the breach thereof shall be brought and tried in the County of Sonoma. G. Captions: The captions in this Agreement are solely for convenience of reference. They are not a part of this Agreement and shall have no effect on its construction or interpretation. H. Merger: This writing is intended both as the final expression of the Agreement between the parties hereto with respect to the included terms and as a complete and exclusive statement of the terms of the Agreement, pursuant to Code of Civil Procedure Section 1856. No modification of this Agreement shall be effective unless and until such modification is evidenced by a writing signed by all parties. I. Time of Essence: Time is and shall be of the essence of this Agreement and every provision . hereof. J. Entire Agreement: This Agreement is the entire Agreement between the parties. Fourth Amended Cooperative Agreement to Provide Funding and Support Information for Santa Rosa Plain Groundwater Study 5 9. AGREEMENT BECOMING EFFECTIVE This Agreement shall become effective upon execution by the Agency and all Participants. 10. TERMINATION Any Participant may terminate its participation in this Agreement by giving one hundred eighty (180) days advance written notice to all other parties of its intent to terminate its participation in this Agreement. Termination shall not relieve the Participant of its obligation to pay costs due before the effective date of the termination. 11. COUNTERPART SIGNATURES This Agreement may be executed in counterpart and each of these executed counterparts shall have the same force and effect as an original instrument and as if all of the parties to the aggregate counterparts had signed the same instrument. / / / / Fourth Amended Cooperative Agreement to Provide Funding and Support Information for Santa Rosa Plain Groundwater Study 6 IN WITNESS WHEREOF, the parties hereto have executed this Agreement as set forth below. Reviewed as to substance by County of Sonoma: I Reviewed as to funds by Agency: Department Head Reviewed as to form: County Counsel COUNTY OF SONOMA Chair, Board of Supervisors Attest: Clerk CITY OF SANTA ROSA By: Title: Attest: Recording Secretary Approved as to form: of Santa Rosa A CITY ROI�NE PARK By: Mayor Authorized by Resolution No. 2009 -32 tin AptA1"' -44,. 200A City of Ikufiilert Park Approved as to form: r � �C� ORNI _ of Division Manager - Administrative Services Reviewed as to substance by Agency: Department Head SONOMA COUNTY WATER AGENCY Chair, Board of Directors Date: Attest: Clerk of the- Board of Directors CITY OF COTATI By: Citv Manager or Designated Representative CITY OF By: Mayor Approved as to form: of Se TOWN OF WINDSOR By: Town Manager Attest: Town Clerk CAL AMERICAN WATER COMPANY, a California Corporation Bv: Tom Bunosky, Vice President Operations Fourth Amended Cooperative Agreement to Provide Funding and Support Information for Santa Rosa Plain Groundwater Study 1 7 H O W U O U W U v, cl v ?a N s. w 1° 0 0 U m m 0 cNr �0 O 0 m O U ;~ a j o o o j I L o o c-a j N j p m N O E"! 0 ° ' N m ! p I I \.o I m I U) N 00 'cH ! I CCO I I Et? i I d3 r' ift w O °o °o °' °o °O °o °o CO C 0 00 CD C) 66 o 0 0 CJ I ed v j j I a I j N; CVI ) I clt L6 V!3- V3 U�3- fl� � I I 0 \ 1 LO R � CO ON N. I �o ! I � 06 j v) j ! 00 cf� C6 LO ON I o I LO co ce) o U t- c j I N1 cfr 00' � j Ie ! 0 p. O � i I �I 00 N n LO j N N m m A CNy L 6s O i ti t c--i CT CV O v � ! I x � � I 1 ON 00 ON N o l 00 oo j cq 00 a\ LO ai ( , O \ CD1 CY\ i ! E � r i 00 NI O I �o O '' + n O j ' O i o0 m O� in r-+ a0 'cH LO j CV r-� fAl jr vet f291 i CD j CD 00 rn p CD CD ON LO r-I 06 m LO ON LO LO 1 � I 1 �llll ! I C) '~ 001 a` v �. ri �i rn; N �! a, N a�i m rn! rn rn w \0 N a: N v 00 a\ Z• o o o o o U I F 0 EA bb En a) CO w bo C7 ca co O C) G CO :°u c bo o♦ Cd 0 ao � w , O 0 u p 10 a � O � O of20 u .5 ° ,° N O �00 �'p N AEiT 0 Cdm ° 0 O o LO 0 Ca v 0 o CO O o CO ..o ka o ca CO o 5� o En U ATTACHMENT B Study Description Title: Evaluation of the ground -water resources of the Santa Rosa Plain Cooperating agency: Sonoma County Water Agency (SCWA) Period of project: 2006 -2010 Geographic Scope: The Santa Rosa Plain in Sonoma County. Problem: The Santa Rosa Plain, home to approximately half of the population of Sonoma County, faces growth in population and demand for water. Water supply is provided by a combination of ground water and water delivered via aqueduct from the Russian River. Water managers face the challenge of meeting the increasing water demand with a combination of Russian River water, which has uncertainties in its future availability, and local ground -water resources. The water use decisions by the different entities in the Santa Rosa Plain will have an impact on other ground -water users. Water managers need to determine the likely effects of future ground -water development in the Santa Rosa Plain and to identify efficient strategies for surface - water /ground -water management that will ensure the long -term viability of water supply. Objectives: 1) develop an updated assessment of the geohydrology and geochemistry of the Santa ;Rosa Plain; 2) develop a multi- aquifer ground -water flow model for Santa Rosa Plain; and 3) evaluate the hydrologic impacts of alternative ground -water management strategies for the basin. Relevance and Benefits: The proposed study will provide hydrologic information needed by SCWA, municipalities in the Santa Rosa Plain, and other management and regulatory agencies to better understand the potential impacts of increasing ground -water use on ground -water levels, stream - aquifer interaction, subsidence, and, water quality. The study will consider several priority USGS water - resource issues including surface- and ground -water interactions, effects of urbanization on water resources, and hydrologic- system management. Approach: (1) data compilation, utilizing a Geographic Information System (GIS); (2) new data collection, focusing on water - quality sampling; (3) data interpretation and geohydrologic characterization - including refining hydrologic budgets and updating conceptual models of the ground -water flow system based on the new data and the results of ongoing USGS geologic studies in the basin; and (4) simulation of ground -water flow in Santa Rosa Plain. A set of potentially important additional data collection activities also are presented. Anticipated products: a summary USGS report (WRIR), a fact sheet, and several journal articles. Fourth Amended Cooperative Agreement to Provide Funding and Support Information for Santa Rosa Plain Groundwater Study B -1 Water Resources Availability and Management in Sonoma County, California: Phase 2 - Evaluation of the ground -water resources of the Santa Rosa Plain PROBLEM The Santa Rosa Plain, home to approximately half of the population of Sonoma County, faces growth in population and demand for water. Water supply is provided by a combination of ground water and water delivered via aqueduct from the Russian River. Water managers face the challenge of meeting the increasing water demand with a combination of Russian River water, which has uncertainties in its future availability, and local ground -water resources. The water use decisions by the different entities in the Santa Rosa Plain will have an impact on other ground -water users. The two overarching ground -water management questions in the Santa Plain are: 1) What will be the effects of future ground -water development in the Santa Rosa Plain? In particular, the increase in ground -water demand resulting from urban growth and other land use changes will affect water levels, recharge, surface -water discharge, and water quality. Current regional water- quality concerns in the Santa Rosa Plain include iron, manganese, and arsenic. There also is localized contamination from volatile organics such as PCE. Increasing ground -water development may also induce land subsidence. 2) What are efficient strategies for surface- water /ground -water management that will assure the long -term viability of water supply in the Santa Rosa Plain? Historically, individual ground -water users in the Santa Rosa Plain - municipal, agricultural, and domestic -- have proceeded independently in their utilization of ground water. As pumpage has increased, it is becoming clear that changes in pumpage in one location can have impacts on ground -water conditions elsewhere in the basin. Similarly, Russian River water and ground water have historically been used as separate sources of supply, but not explicitly managed in a linked manner. The increasing water demand, potential reduction in availability of Russian River water, likely lowering of some maximum contaminant limits (MCLs), and increasing environmental awareness in the region, make integrated surface- water /ground -water management essential. Management strategies may include aquifer storage and recovery (ASR) projects. ASR projects could be operated on a seasonal basis to capture surplus winter flows or on a multi-year climatic basis to store water for drought protection. To properly address these two questions requires a thorough reassessment of the geohydrology and geochemistry of the Santa Rosa Plain and development of a computer simulation model of the ground- water flow system. SCOPE This proposal describes a cooperative project that will study and report on the geohydrology and ground -water management issues of the Santa Rosa Plain. This project will be the second phase of the county -wide work plan delineated in the USGS proposal for study of "Water Resources Availability and Management in Sonoma County, California." That proposal describes county -wide water management and the importance of the linkage between the Russian River basin - the main source of water supply —and the other basins that are dependent, in part, on Russian River water. This long term cooperative plan involves geohydrological assessment of each of the county's major ground -water basins, including the development of geographic-information systems (GIS) and ground -water flow models. The ongoing first phase of the work in the original proposal focuses on the Sonoma Valley and Russian River system. Fourth Amended Cooperative Agreement to Provide Funding and Support Information for Santa Rosa Plain Groundwater Study B -2 OBJECTIVES The primary objectives of this second phase of the program are to: 1) develop an updated assessment of the geohydrology and geochemistry of the Santa Rosa Plain; 2) develop a multi- aquifer ground- water flow model for Santa Rosa Plain; and 3) evaluate the hydrologic impacts of alternative ground- water management strategies for the basin. RELEVANCE AND BENEFITS As in the first phase of the USGS -SCWA cooperative studies of integrated multi-basin management of ground -water resources in Sonoma County, the proposed work in this phase will provide much of the hydrologic information needed by SCWA, municipalities in the Santa Rosa Plain, and other management and regulatory agencies to better understand the potential impacts of increasing ground- water use on ground -water levels, stream discharge, stream - aquifer interaction, subsidence and water quality. The program also will provide the information and modeling tools needed by SCWA and others to efficiently utilize the County's surface- and ground -water resources. This project will consider several priority water - resource issues identified in the "Strategic Directions for the Water Resources Division, 1999-2008," including surface- and ground -water interactions, effects of urbanization on water resources, and hydrologic- system management. The long term plan for this cooperative program, after completion of ground -water flow models of individual basins, is to develop a model that interrelates surface water, both local and imported, with the multiple ground -water basins for optimization of water resources utilization in Sonoma County. Such a model will provide transferable tools for analyzing multi-basin water - management plans in other areas of the nation. STUDY AREA The Santa Rosa Plain is bounded to the southwest the Mendocino mountains and to the northeast by the Sonoma and Mayacama mountains (fig. 1). To the southeast is a structural rise separating the Santa Rosa Plain from the Petaluma Valley. The California Dept. of Water Resources (1982) suggests that the Adobe Creek Anticline may act as the barrier between the two basins. To the northwest, a series of hills separates the Santa Rosa Plain from middle part of Russian River system. The two basins are linked by a gap in the hills southeast of Healdsburg (Caldwell, 1958). GEOLOGIC FRAMEWORK OF THE SANTA ROSA PLAIN Ongoing work by geologists at USGS indicates several geologic aspects of the Santa Rosa Plain that may have important implications for ground water (Robert McLaughlin, USGS, Menlo Park, written communication 2003). The Santa Rosa Plain is separable into two basins, the Cotati and Windsor basins, filled to 2.5 -3.0 km in depth with Miocene to Holocene sedimentary deposits and volcanic rocks. The Cotati basin is further subdivided into two sub - basins. These basins are floored with Mesozoic rocks of the Franciscan Complex, and could include serpentinite of the Coast Range ophiolite and strata of the Great Valley sequence. On the western side of the Santa Rosa Plain, the basement is overlain by Pliocene marine strata and non-marine Pliocene - Pleistocene fluvial deposits. On the eastern side are Pliocene - Pleistocene fluvial deposits that may overlap the age of the marine strata to the west. Volcanic rocks of Pliocene to Miocene age underlie and are intercalated with parts of the marine and non - marine section. The age of the buried part of the basin section is largely unconstrained. Fourth Amended Cooperative Agreement to Provide Funding and Support Information for Santa Rosa Plain Groundwater Study . B -3 Along the western margins of the Santa Rosa Plain are north - trending, down -to -the -east normal faults of Pliocene and younger age, exposed only in a few places. Along the northeastern margins are the active north - northwest trending Healdsburg and Rodgers Ck faults. The Windsor and Cotati basins are separated by a basement high associated with the west - northwest trending, northeast - dipping Trenton thrust fault, which is exposed only locally. The Cotati basin is subdivided by a deeper basement ridge which is sub - parallel to the Trenton fault. The origin of this ridge is uncertain. GENERAL HYDROLOGIC DESCRIPTION OF SANTA ROSA PLAIN Water supply in the Santa Rosa Plain is met by combinations of surface -water delivery from the Russian River and ground water from local basins. Santa Rosa is the largest city in the county (136,000 people in 1998) and has had the most rapid growth. It utilizes primarily Russian River water, but maintains wells for emergency supply. Rohnert Park and Sebastopol currently use ground water for most of their supply. Windsor receives water from the aqueduct as well as its own wells located near the Russian River. Windsor also has wells within the Santa Rosa Plain for emergency supply. Cotati primarily uses aqueduct water, but maintains wells to provide backup supply and meet peak summer demands. SCWA operates three deep wells in the Santa Rosa Plain that are tied into the aqueduct. In addition, there are numerous private wells in the Santa Rosa Plain that provide water for vineyards, cattle, and domestic use. The USGS (Cardwell, 1958) and the California Department of Water Resources (1982) have completed studies of the Santa Rosa Plain. Caldwell identified the main water- bearing units to be the Pliocene Merced Formation, the Pliocene -to- Pleistocene Glen Ellen Formation, and the Pleistocene and Recent alluvium. The California Department of Water Resources (1982) stated that the two major water - producing zones in the Santa Rosa Plain are the Merced Formation and the alluvial fan deposits (Pleistocene to Holocene). Other potential water bearing units in. the basin include the Pliocene Petaluma Formation and Sonoma Volcanics. Santa Rosa Creek, Mark West Creek, and the Laguna de Santa Rosa (Laguna) provide the main surface drainage for the area. Santa Rosa and Mark West Creeks originate in the mountains to the east of the Plain. The Laguna runs along the western margin of the basin in the-northern part of the Plain and is described by Caldwell (1958) as "a swampy, intermittent drainage course" that "discharges to the Russian River through a narrow outlet." The USGS annual California water data summary states the following about the Laguna. "The Laguna is a natural water channel and overflow basin connecting the Santa Rosa Creek, Mark West Creek, and other smaller creeks with the Russian River. During floods, directions of flow may be either to or from the Russian River, and the Laguna acts as a natural regulator of floods on the lower Russian River." (Friebel and others, 2002) Caldwell (1958) noted that the streams in the Santa Rosa Plain were generally fed by discharge from ground water and that most ground -water recharge is from direct precipitation. As ground -water pumpage has increased, the stream- aquifer dynamics have likely changed. The general ground -water flow pattern is toward the center of the plain from the uplands to the east and west. Fourth Amended Cooperative Agreement to Provide Funding and Support Information for Santa Rosa Plain Groundwater Study B-4 APPROACH The study has four principal tasks: (1) data compilation - a GIS will be the primary means of organizing data for archiving, searching, interrelating, and displaying hydrologic and related information; (2) collection of new data, with a focus of water - quality sampling; (3) data interpretation and geohydrologic characterization - including refining hydrologic budgets, and updating conceptual models of the ground -water flow system based on the new data and the results of ongoing USGS geologic studies in the basin; and (4) simulation of ground -water flow in Santa Rosa Plain. In this document, the basic required components of these four principle tasks are delineated. In addition, a set of potentially important additional data collection activities are presented. 1. Development of Geographic Information System (GIS) The USGS will work collaboratively with SCWA to develop a GIS of the Santa Rosa Plain. This work will build on the existing data bases that have been developed for the Sonoma Valley and Russian River areas by SCWA, the Sonoma Ecology Center, and the USGS. The GIS will form the basis for all later tasks, including determination of needs for new data collection. A partial list of data that would be included in the GIS is provided in table 1. 2. New Data Collection Water quality samples will be collected from selected wells, springs, and streams. Initially, existing wells will be used and selected based on compiled data in the GIS and in consultation with County technical staff. As described in the section on "Possible additional data collection," there would be great value to drilling and installing multiple -well monitoring sites in the Santa Rosa Plain. Such monitoring sites would allow for discrete depth- dependent sampling/ measuring of water quality, water levels, and hydraulic properties. Sampling will focus on delineating the source and age of ground water in the main water - bearing zones in the Santa Rosa Plain and characterizing the processes of (potential) water_ duality degradation. The sampling will build on the recent water - quality data collected as part of the Groundwater Ambient Monitoring and Assessment (LAMA) program. Water - quality analysis in this study will include basic inorganic constituents and nutrients. The stable isotopes of oxygen and hydrogen will be used to provide information on sources of recharge, and tritium /helium will be used to provide information on ground -water age and travel time. Specific analyses of constituents of particular concern, such as arsenic, iron, and manganese, also will be conducted. Specifically, USGS shall sample approximately 20 wells in each of the first two years of the project. All wells would be analyzed at the USGS Central Lab for major and minor ions; basic nutrients; trace metals; arsenic, iron, and chromium speciation; and stable isotopes of oxygen and hydrogen. Selected wells would be analyzed for tritium /helium dating and /or carbon -14 /Carbon 13/12 analyses. Limited additional sampling would be conducted in year 3. Sampling locations and analytes would be chosen based on the results from the first two years of sampling. Other additional constituents that could be considered for sampling and analysis are listed in the section on "Possible additional data collection." Quality assurance plans will be developed. All new data collected in this study will be input into the project GIS. In addition all these data will be entered into the USGS national data bases (NWIS or GWSI). Supplemental Work for Year 2: Originally described under "Possible Additional Data Collection Activities" this supplemental work will include the collection of high- resolution seismic - reflection data in the Santa Rosa Plain. The data collected will be used to image basin structure and stratigraphy in critical areas as defined by current interpretation of borehole, geologic, and geophysical information. In particular, the seismic- reflection Fourth Amended Cooperative Agreement to Provide Funding and Support Information for Santa Rosa Plain Groundwater Study B -S data will constrain the geometry and depth extent of the Trenton Ridge, a completely concealed basement high that may restrict groundwater flow within the Santa Rosa Plain. The seismic - reflection data will (1) constrain how close to the ground surface this impermeable basement ridge extends, (2) evaluate whether. the basement ridge folds or truncates sedimentary layers (aquifers) present above the ridge and in the adjacent basins, and (3) test whether the Trenton thrust fault extends east across the Plain, disrupting the sedimentary section. Project deliverables will include a data release, an interpretive report, and a presentation describing the results. 3. Data Interpretation and Geohydrologic Characterization The geohydrologic characterizations of the Santa Rosa Plain based on previous USGS and DWR studies will be updated using data collected for this program and the results of modeling. This will involve reassessing the hydrostratigraphy, quantifying the distribution and quantity of recharge and discharge (including pumpage), and evaluation of basin water quality. The main goals are to develop an updated representation of the hydrostratigraphy of the basin, obtain improved estimates of the hydraulic properties of the water - bearing deposits, determine the sources and ages of ground water, characterize the general ground -water quality characteristics, quantify the three- dimensional basin ground -water budget, and evaluate the dynamics of surface - water /ground -water interaction. There will be particular focus collecting information on the changing dynamics stream aquifer interaction along Santa Rosa Creek, Mark West Creek, and the Laguna as ground -water pumpage increases. Note that there are currently eight active USGS gaging stations in the Santa Rosa Plain, but none of these stations have a long -term historical discharge record. The California Department of Water Resources (DWR) maintains a monitoring network of nearly 40 wells in the Santa Rosa Plain. Water levels in these wells are measured semi - annually. The network will be evaluated to determine if additional wells need to be added in order to provide adequate data for continuing hydrologic studies. Data from the networks will be analyzed to assess any long -term trends in ground -water levels and relations between precipitation and water levels. As part of this study, USGS researchers in Geologic Discipline in Menlo Park will develop a geologic framework model of the major water - bearing units in the Santa Rosa Plain. This framework model will provide the starting point for USGS's reassessment of the geohydrology of the area and initial development of the ground -water simulation model This framework modeling will be conducted as part of a geologic/ geophysical project being coordinated by Robert McLaughlin. The overall goal of that project is to define the three- dimensional geology through areal geologic mapping, geophysical surveys, and various topical studies (including geochronology, sediment transport patterns, and fault histories). A particularly valuable benefit of the parallel geologic/ geophysical study in the Santa Rosa plain relates to the possible additional data collection activities described later. These activities could provide a wealth of new hydrologic and geologic information. The Menlo Park geologists and geophysicists, whose salaries are already covered, would be interested and available to analyze such new data if the costs of the field work and some student assistants were covered. USGS shall coordinate with the USGS geologic/ geophysical study to compile the most recent geologic and soil mapping, geologic and geophysical well logs, and regional geophysical surveys. USGS shall use these data along with newly collected geochemical data to reassess the hydrostratigraphy of the ground -water basins. GIS coverages of aquifer geometries will be created. As much as possible, pumpage data will be complied from the relevant entities. When that is not available,, especially for historical periods, pumpage will be derived from land -use and well- location data. Recharge areas will be identified using topography, geologic and soils maps, ground -water level records, and stable Fourth Amended Cooperative Agreement to Provide. Funding and Support Information for Santa Rosa Plain Groundwater Study B -6 isotopes. Estimates. of annual recharge will be made using data from precipitation stations, ground- water levels, water chemistry, and environmental isotopes (tritium). Estimates of evapotranspiration along the creeks, particularly the Laguna, will be estimated based on hydraulics and vegetation types and densities. Chemical data from this study, combined with data from other sources, will be used to identify geographic areas and depth zones where poor quality water exists and diminishes the quantity of potable water available. Particular concerns with iron, manganese, and arsenic will be addressed. Sampling for volatile organics compounds (VOCs) is not included as part of the basic data collection for the study, but is listed as a possible additional task. If such sampling is undertaken, characterization of the presence of low -level VOCs is in the regional ground -water system would also be completed. Note that data on low -level VOCs for the Santa Rosa Plain has recently been collected as part of the GAMA study. 4. Simulation Model of the Santa Rosa Plain A ground -water simulation model using MODFLOW will be developed for the Santa Rosa Plain. The model serves first as an analytic tool for synthesizing all available geohydrologic information. The completed model then can be used as a management tool to assess the hydrologic impacts of alternative water- management scenarios. As noted above, the initial determination of model layering will be based very closely on the three - dimensional geologic framework model to be developed by the USGS Geologic Discipline in Menlo Park. Based on the previous hydrologic investigations, the model will be designed to simulate . conditions in the recent and older alluvium, the Glen Ellen Formation, the Merced Formation, and the Sonoma Volcanics. The model development will be based very closely on the new geologic framework work being conducted by the USGS Geologic Discipline. Data from the existing DWR water level monitoring network will be used for model calibration. Both steady state and transient simulations will be conducted. In the current modeling of the Sonoma Valley, 1974 is being used for a steady state simulation. Because of the more extensive ground -water development in the Santa Rosa Plain, an earlier period may have to be used for-steady-state simulation. The transient simulation would then extend from the steady state time period through to present conditions. It will be important that the model adequately represent the interaction between ground water and the major streams. As noted earlier, the surface water regime is likely to change as a result of changes in ground-water'- It also will be essential to accurately represent the hydraulic linkage between the Santa Rosa Plain and the adjacent basins - the middle Russian River system to the northwest, the Petaluma Valley to the south, and the Bennett, Rincon, and Kenwood Valleys to the east. The model will be a useful tool for testing the hydraulic impact of mapped faults in the basin using the Horizontal - Flow- Barrier package. Finally, the model will be formulated with the Inter -Bed Storage package, in order to have the capability of simulating subsidence. The model will be particularly valuable for simulating the likely.long -term hydrologic consequences of alternative future scenarios. Scenarios would include a base case representing continued operation under current conditions. Other scenarios would likely consider shifts in pumping locations (both areally and vertically) and rates, ASR projects, and changes in delivery of Russian River. The model can also be used in a particle tracking mode. This enables detailed evaluation of the ground -water flow field and assessment of the potential advective transport of contaminants. Fourth Amended Cooperative Agreement to Provide Funding and Support Information for Santa Rosa Plain Groundwater Study B -7 POSSIBLE ADDITIONAL DATA COLLECTION ACTIVITIES In addition to the sampling and monitoring of existing wells and surface waters, there are additional data collection activities that could provide invaluable geohydrologic data. Many of these activities would take advantage of the available expertise in the USGS Geologic Discipline. These data collection tasks are described briefly here. A more detailed presentation of the specifics of the monitoring well drilling and coring is provided a separate document. Similarly detailed information, including costs, on the other possible additional data collection activities also can be provided. Drilling, coring, and logging deep (1200 -1500 ft.) drill holes and installation of multiple -well monitoring sites — This task is described in detail in a separate document. In the course of evaluating existing well data - predominantly production wells with only driller's logs -- as part of the current cooperative USGS -SCWA study, it has become clear that there is a crucial need for strategically located deep multiple -well monitoring sites. Without at least a few such monitoring sites, it is not possible the thoroughly characterize the three- dimensional ground -water flow system in the Santa Rosa Plain or in the other Sonoma County basins. During the drilling of such sites, there would be detailed logging by USGS geologists providing accurate characterizations of lithology. At selected sites continuous coring would be conducted. The cores provide in situ sample of the materials and allow for direct assessment of lithology, detailed stratigraphy, paleontology, tephra , paleomagnetic orientation, hydraulic and thermal properties, and pore fluid chemistry. Once drilled, a broad suite of geophysical logs would be conducted in the borehole. Finally, four -to -six individual piezometers would be installed at different depths to allow for long term monitoring of depth- dependent water levels and water quality. Additional water - quality sampling -- There is a broad range of additional water- quality sampling and analyses that could be conducted, including low -level VOCs, additional isotopes such as strontium, nitrogen, and boron. More extensive carbon and tritium helium analyses could also be considered. Depth - dependent sampling - The USGS has specialized equipment for conducting depth dependent water - quality sampling within production wells. Combined with flow -meter logging, this procedure can quantify the different vertical chemical inputs that are contributing to the overall bulk water - quality of water pumped from a production well. Areal Geologic Mapping -This would be used to focus and improve the 1:24,000 - scale. geologic mapping around the Santa Rosa plain, to better carry surface stratigraphy into the third dimension, and to better define the distribution and recency of faults. Potential Field Geophysics - This would involve collection and interpretation of new detailed gravity data along with existing high- resolution aeromagnetic data. This work would be used to improve constraints on the shape of the basement (Franciscan) surface beneath the water bearing units, the location, shape, and offset of faults within and bounding the Plain, and the distribution of mafic volcanics of the Sonoma Group. REPORTS As currently planned a summary USGS report (WRIR), a fact sheet, and several journal articles would be completed as part of this study. In addition to the formal reports, progress reports, frequent meetings, and a website will be utilized to facilitate communication and coordination with SCWA and other relevant stakeholders. PERSONNEL The project will require four senior hydrologists/ geographers (1/3 to 1/2 time per year) focusing on the geohydrology, geochemistry, simulation modeling, and GIS. In addition, there would be a 1/4- Fourth Amended Cooperative Agreement to Provide Funding and Support Information for Santa Rosa Plain Groundwater Study B-8 time field technician in years 1 -4. At least two researchers from the USGS Geologic Discipline will work 1/8 to 1/4 time in years 1 and 2. BUDGET COSTS: Federal fiscal year Year 1- Year 2- Year 2- Year 3-. Year 4- Year 5- (October 1 - 2006 2007 2007 2008 2009 2010 September 30) Supplemental Work Labor and travel $283,000 $401,000 $60,000 $400,000 $404,000 $296,000 Lab analysis, supplies, and $42,000 $57,000 $60,000 $81,000 $40,000 $44,000 contracts ,TBD TOTAL $325,000 $458,000 $120,000 $481, 000 $444,000 $340,000 FUNDS: Federal fiscal year Year 1- Year 2- Year 2- Year 3- Year 4- Year 5- (October 1- 2006 2007 2007 2008 2009 2010 September 30) Supplemental Work Requested federal $125,000 $125,000 $60,000 $125,000 $125,000 $125,000 funds Received federal $115,000 $125,000 $60,000 TBD TBD funds ,TBD Cooperative funds $200,000 $333,000 $60,000 $356,000 $319,242 $215,000 TOTAL $315,000 $458,000 1 $120,000 $481,000 $444,000 $340,000 As indicated above, a total of $125,000 in federal matching funds has been requested for all five years of the study. The exact amount of federal funding is subject to the availability of appropriations. Final determination of federal funding is expected by September of each year. Additional costs would be incurred for any of the additional data collection activities. WORK PLAN The work plan assumes that the project will start in federal fiscal year 2006 (October 1, 2005 - September 30, 2006). It does not incorporate any of the additional data collection tasks. Fourth Amended Cooperative Agreement to Provide Funding and Support Information for Santa Rosa Plain Groundwater Study B -9 REFERENCES California Department of Water Resources, 1982, Bulletin 118 -4, Evaluation of ground water resources: Sonoma County, Volume 2: Santa Rosa Plain, 107 p. Cardwell, G.T., 1958, Geology and ground water in the Santa Rosa and Petaluma Valley areas Sonoma County: U.S. Geological Survey Water - Supply Paper 1427, 273 p. Friebel, M.F., Freeman, L.A., Smithson, J.R„ Webster, M.D., Anderson, S.W., and Pope, G.L., 2002, Water Resources Data, California, Water Year 2001, Volume 2, Pacific slope basins from Arroyo Grande to Oregon State line except Central Valley, Water -Data Report CA-01-02,450 p. Fourth Amended Cooperative Agreement to Provide Funding and Support Information for Santa Rosa Plain Groundwater Study B -10 2006 2007 2008 2009 2010 Geographic information X X X X New Data Collection X X X Year 2- 2007 Supplemental (High-Resolution Seismic Reflection Profiling) X X Data interpretation and geohydrologic characterization (conducted collaboratively X X X X with ongoing eolo 'c stud Simulation model of Santa Rosa Plain X X X X Reports preparation and review X X X REFERENCES California Department of Water Resources, 1982, Bulletin 118 -4, Evaluation of ground water resources: Sonoma County, Volume 2: Santa Rosa Plain, 107 p. Cardwell, G.T., 1958, Geology and ground water in the Santa Rosa and Petaluma Valley areas Sonoma County: U.S. Geological Survey Water - Supply Paper 1427, 273 p. Friebel, M.F., Freeman, L.A., Smithson, J.R„ Webster, M.D., Anderson, S.W., and Pope, G.L., 2002, Water Resources Data, California, Water Year 2001, Volume 2, Pacific slope basins from Arroyo Grande to Oregon State line except Central Valley, Water -Data Report CA-01-02,450 p. Fourth Amended Cooperative Agreement to Provide Funding and Support Information for Santa Rosa Plain Groundwater Study B -10 �5`� i k 1 t, gyp", t Mendo in z e `20 tav�u4 vi L6 x UNE ztW, €,''^�' ,�'' rs ��a !w,4 `r t bf t Lake / yk d jS li 1,,-t s a Cove e, SiJnjim ` k r iNarm `. Y Springs Heal s6u 128 ap s � ��� � �`���'� Dam • - �� .• �. �-� ,'�„� -^"ice > ��' '� a �`f 5 � �., • �' '� � �£��`����f���1 f 'ter �. �•. s � C �t kb�Y'C i vtP 7 4� Y C,o • i ' 29 J �'tc� Figure t. 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E a o / 0 § / ® \ w e a m< w a E ® \ ® 2 m 2 m§ 7 \ f 0 2.0 0\ k co 0 7 o 0 � iE E O O m o 2 a co \ 6\\/ s c c 0 k </ c E E/ b w\ u $ O E 2 p/ § 0 2 2§§ w 2 c 0)\ o m §% 2 CO / k k a f/ k/ � \® LL a) m u= 3 m F E 5§ 0 2) m ®r e t e ca = o _ v) _ = n .c » m m = _0 u U) � E Q w § k n / C) • / E 0 \ § / 2 a 0 c ƒ ƒ§J E _o ƒ/ f < > \ o ww ®gym U) e 5, c e C � k k k m 0 \ k« \ / $ / $ 5 / < \ / w 0 0 � E c k m / C) 0 ® 0 �/ § / ®/ 0 / § ƒ ƒ§J E _o ƒ/ E 7 O.2 0.2 im ƒ�@%2E 2 k % 5 a A 5 / > C,6 cu G / 7 \ Z 2 2 o cu $0) / E o> o a R 2 2 2 2& = e—a E$k$\ §2 J 2 -0 \.E t / U) y Of / � w 2 w $. $ k w > g \F O @ O m m q / \ 2 / k E -0 2 $ �/ > E 2 f2 E U) @ b o @ E 7 O.2 0.2 im k n c 2 2 k % 5 a A 5 g 5 G / 7 \ Z 2 2 o cu $0) / E o> o a R 2 2 2 2& = e—a E$k$\ §2 J 2 -0 \.E t / U) y Of / � w 2 w $. $ k w > g \F O @ O m m q / \ 2 / k ATTACHMENT C Draft Joint Funding Agreement with USGS Fourth Amended Cooperative Agreement to Provide Funding and Support Information for Santa Rosa Plain Groundwater Study C-1 Page 1 of 2 Page 1 of 2 Fonn 9 -1366 U.S. Department of the Interior customer #: Ca661 (Oct 2005) U.S. Geological Survey AgreemeniiFC 08MCAD06110, Amd Joint Funding Agreement z project iF: Tim #. 94- 6600539 Fixed Cost p Agreement Yos EIN. FOR WATER RESOURCES INVESTIGATIONS THIS AGREEMENT is entered into as of the 1st day of November, 2007, by the U.S. GEOLOGICAL SURVEY.. UNITED STATES DEPARTMENT OF THE INTERIOR, party.of the first. part, and the SONOMA COUNTY WATER AGENCY, party of the second part. 1. The parties hereto agree that subject to availability of appropriations and in. accordance with their respective authorities there shall be maintained in cooperation a study on the evalualion of the groundwater resources of the Santa Rosa Plain, Sonoma County, California, herein called the program. The USGS legal authority Is 43 USC 36C, 43 USC 50- and 43 USC 56b. 2. The following amounts shall be contributed to coverall of the cost of the ,necessary field and analytical work directly related to this program.. 2(b) Includes In< Wnd Services in. the amount of $0. by the party of the first part during the period (a) $125,000.00 November 1, 2007 to December, 31, 2009 by the party of the second.part during the.period (b) $319,000.00 November 1, 2007 to December31; 2009 USGS HUNS is 1761 - 38857. The amounts in both 2(a) and 2(b) above are for the 2009 portion of this agreement only. Total Sonoma County funding for this agreement,. including: this amendment: is $675,000. Total USGS funding for this agreement, including this amendment is $250,000: c Additional or reduced amounts b each {) y partydtiring the above period orsuoceeding periods as maybe determined by mutual agreement and set forth Wan exchange of letters between the parties. (d) The performance period may be changed by mutual agreement and set forth in an exchange of letters between the parties. 3. The costs of this program may be paid by either party in conformity with the laws and regulations respectively governing each party. 4. The field and analytical work pertaining to this program shall be under the direction of or subject to periodic review by an authorized representative of the party of thefirst.part. 5. The areas to be included in the program shall be determined by. mutual agreement between the parties hereto or their authorized representatives. The methods employed in the field and office shall be those adopted by the party of the first part to insure the required standards of accuracy: subject to modification by mutual agreement 6. During the course of this program, all field and analytical work ofeither.party pertaining to this program shall be open to the inspection of the other party, and if the Work is hot being carried::on in A mutually satisfactory manner, either party may terminate this agreement upon 60 days written notice to the other 7. TThhe original records resulting from this program vwili bpi deposited in the office of origin of those records. Upon request copies of the original records will be provided to the office of the other party. https: / /gsvaresa0l.er usgs. gov/ Webfonns/ 9- 1366R.nsf/ 62b886045i lOc625852571330054c... 2/10/2009 I Fourth Amended Cooperative Agreement to Provide Funding and Support Information for Santa Rosa Plain Groundwater Study G2 Page 2 of 2 Page 2 of 2 Form 9 »1366 U.S. Department of the ulterior customerM cAa61 continued U.S. Geological Survey Agreement#: 06W4CA006110, Amd Joint Funding Agreement 2 praleat #: TIN #' 94. 6000539 8. The maps, records, or reports resulting from this program shall be made available to the public as promptly as possible. The maps, records, or reports normally wilt be published by the party of the first part. However, the party of the second part reserves the right to publish the results of this program and, if already published by the party of the first part :shali,:upon request, be fumished by the party of the first part, at costs, impressions suitable for purposes of reproduction similar to that for which the original copy was: prepared. The maps, records, or reports published by either party shall contain a statement of the cooperative relations between the parties. 9. US.GS will issue billings utilizing :Department of the.Interior. Bill. for Collection (form DI- 1040). Billing documents are to be rendered Quarterl Payments of bills are due wiihin 60 days after the billing data. if not paid by the due date, interest will be charged at the current Treasury rate for each 30 day period, or portion thereof. that the payment is delayed beyond the due date, (31 USC 3717; Comptroller General Mis B-212222, August 23, 1963). U.S. Geological Survey SON©mA COUNTY WATER AGENCY United States Departinentof the.Interlor USES Point of Contact Customer Point of Contact Name; Janee 0. Hiett Name: Marais Trotfa, Water Agency Hydrogeologist Address:. 6000 J Street: Placer Hall: Address: Post E)ifice Box 11628 Sacramento, California 95819 -6129 Santa rose, California 95406=1628 Telephone: 916278 -3001 Telephone: 707 647-1978 Email: ` jdhieit @usgs.gov Erlich: Signatures - Signatures By. Date By Date Name:: Eric O— Reichard!. Name: - Tide: Acting Director, USGS California. Water Title: Science Center BY Date By Date Name: Name: Title: Title: BY Date By Date Name: Name: Title: Tittle: https:// gsvaresa0l .er.usgs.gov/Webtonns/9 -1 A66P,nsVl lb886045170c623852571330054c... 2/10/2009 Fourth Amended Cooperative Agreement to Provide Funding and Support Information for Santa Rosa Plain Groundwater Study C -3 ATTACHMENT D Planned Study Work for Federal Fiscal Year 2009 (October 2008- September2009) as submitted by USGS Data Compilation The U.S. Geological Survey (USGS) will continue to collect additional data from the stakeholders. USGS will complete processing of land use data and utilize it to estimate historic pumpage. USGS will complete input of well construction information. USGS will complete compilation of existing Department of Water Resources, Department of Health Services, USGS (including GAMA), and stakeholder water- chemistry data, and enter relevant data into the USGS national data base (NWIS). Finally, USGS will update watershed model inputs using more spatially detailed (higher resolution) SSURGO soils data and more detailed surface geology. New Data Collection New data collection efforts will be limited to water - quality sampling. Two sets of stable isotope (deuterium and oxygen -18) samples will be collected from about 15 surface water sites during Fall 2008 and Spring 2009 corresponding with dry and wet season hydrologic conditions, respectively. These new data will compliment existing stable isotope data collected from ground -water wells for both the GAMA and Santa Rosa Plain projects. The combined data sets will help define the range of deuterium and oxygen -18 composition of natural waters in the study area and may help identify the source of water to some area wells. Additional and more comprehensive sampling is contemplated should an opportunity for depth- dependent water - quality sampling become available either through SCWA or a stakeholder. Data Interpretation and Geohydrologic Characterization . USGS will complete analyses of water - level contours and hydrographs. This will include identification of trends, determination of "steady state' conditions, and selection of wells to use for model calibration. USGS will complete the characterization of surface geology, stratigraphy, and lithology. USGS will analyze the specific - capacity data, in order to guide initial estimates of hydraulic conductivity for the ground -water model. USGS will analyze and identify water - chemistry trends and spatial patterns. Note that results from any new depth- dependent water - quality analyses will assist in determining model layering. Groundwater flow modeling Groundwater modeling will be a major focus of this year's work. USGS will use the Farm process to estimate the unreported agricultural pumpage and [USGS] will finalize development of the GSFLOW model. As described earlier, GSFLOW involves coupling MODFLOW with the Precipitation- Runoff Modeling System (PRMS). Specific modeling activities planned for FY09 include: *Using preliminary watershed model results to develop initial recharge boundary condition "Continue refining watershed model calibration using stream flow records Fourth Amended Cooperative Agreement to Provide Funding and Support Information for Santa Rosa Plain Groundwater Study D -1 *Estimate agricultural pumpage using the Farm process •Develop pumping input data sets based on reported pumpage and estimates based on land use *Conduct PRMS, MODFLOW, and GSFLOW calibration to streamflow and water -level data *Discuss water - management scenarios with SCWA personnel Budget for Fiscal year 2008 As detailed in the original 5 -year project proposal, the total budget for year 4 is $444,000. Of that amount, $125,000 will be provided by the USGS. The remaining $319,242 will be provided by the local cooperators. The primary staff from the USGS California Water Science Center (CAWSC) working on the project this year are Tracy Nishikawa (modeling/ project chief), Chris Farrar (geohydrology), Joseph Hevesi (watershed modeling) Loren Metzger (geochemistry), Linda Woolfenden (ground -water modeling), Diane Rewis (ground -water modeling), and Andy Morita (GIS). Fourth Amended Cooperative Agreement to Provide Funding and Support Information for Santa Rosa Plain Groundwater Study D -2