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California '-!gional Water Quality Cont A Board <br /> k�N `"� Central Valley RegionQW; <br /> Karl E. Longley,ScD,P.E.,Chair <br /> Linda S.Adams 11020 Sun Center Drive 4200,Rancho Cordova,California 95670.6114 Arnold <br /> Secretary for Phone(916)464-3291 •FAX(916)464-4645 Schwarzenegger <br /> Environmental http://www.waterboards.ca.gov/centralvalley Governor <br /> Protection <br /> 8 July 2009 �gCENED <br /> Ms. Janet Heikeld <br /> Jul 1 0 2009 <br /> Olympian Oil Company EM ARQNMENT HEALTH <br /> 1300 Industrial Road, Ste. 2 PEz MIMSEWICEs <br /> San Carlos, CA 94070 <br /> GROUNDWATER MONITORING FREQUENCY CHANGE TO SEMI-ANNUAL, JIMCO TRUCK <br /> PLAZA, 1022 EAST FRONTAGE ROAD (AKA 22502 SOUTH HIGHWAY 99), RIPON, <br /> SAN JOAQUIN COUNTY CENTRAL VALLEY WATER BOARD CASE# 390718 <br /> The California State Water Resources Control Board (State Water Board) Resolution No. 2009-0042 <br /> requires reduction from quarterly groundwater monitoring to semi-annual or less frequent monitoring at <br /> all sites, unless site-specific needs warrant otherwise, and requires notification to all responsible <br /> parties and the State Water Board of the new requirements by 1 August 2009. The site is currently <br /> monitored under a California Water Code section 13267 Order To Submit Technical Reports (13267 <br /> Order), issued 25 March 2009, and several site wells are currently monitored on a quarterly basis. The <br /> 13267 Order allows Central Valley Water Board staff to change the monitoring frequency from <br /> quarterly to semi-annually. <br /> I have reviewed your case file and semi-annual monitoring appears appropriate for your site. <br /> Therefore, you are to implement semi-annual groundwater monitoring with groundwater samples being <br /> collected and analyzed for your site's constituents of concern every 1St and 3rd quarter of each calendar <br /> year until directed b�this office to do otherwise. Monitoring reports detailing the results are to be <br /> submitted by the 30 day of the month following the end of the reporting quarter (30 April for the 1 st <br /> quarter event and 30 October for the Td quarter event). <br /> You are to also submit quarterly status reports by letter or email during the 2nd and 4th quarter of each <br /> calendar year (15 July for the 2nd quarter and 15 January for the 4th quarter) of all work conducted <br /> during that quarter until directed by this office to do otherwise. The status reports and semi-annual <br /> monitoring reports shall_also include_updates for scheduled work and requests for modifications to <br /> existing schedules posted in the State GeoTracker database, if applicable. <br /> You may contact me regarding questions by phone at (916) 464-4615; or for questions and status <br /> report submittals, by e--mail at jbartonCa�waterboards.cagov. <br /> James L.L. Barton, P.G. <br /> Engineering Geologist <br /> cc: Mr. Mark Owens, SWRCB UST Cleanup Fund, Sacramento <br /> Ms. Margaret Lagorio, San Joaquin Co, 600 E. Main St., Stockton 95202 <br /> Mr. Ron Scheele, Conestoga-Rovers Assoc., 5900 Hollis St., Ste. A, Emeryville, 94070 <br /> California Environmental Protection Agency <br /> 0 Recycled Paper <br />