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• • He <br /> Eoxuxo G. DRowx JR. <br /> . f J' wenxon <br /> 00 <br /> e <br /> ........ .0 Ena R000Rlouez <br /> WaterBoards avlRnxxrx.al PR(RrmlOx <br /> Central Valley Regional Water Quality Control Board <br /> 24 October 2012 RECEIVED <br /> Mr. Dave Isola <br /> NOV 0 8 2012 <br /> Isola &Associates <br /> 405 West Pine Street ENVIRONMENTAL HEALTH <br /> Lodi, CA 95240-2023 PERMIT/SERVICES <br /> NOTICE OF APPLICABILITY OF GENERAL ORDER R5-2008-0149-041, FORMER RIPON <br /> FARM SERVICE, 928 FRONTAGE ROAD, SAN JOAQUIN COUNTY <br /> Ripon Farm Service submitted a Treatability Study Work Plan (Work Plan) dated 10 May 2012, <br /> and the 16 August 2012 Revised Figure 10 and Contingency Plan Commitment to California <br /> Regional Water Quality Control Board, Central Valley Region (Central Valley Water Board) staff. <br /> This Work Plan includes a proposal to biologically reduce nitrate in soil and groundwater <br /> through the injection of amendments into groundwater. The Work Plan also includes a Notice of <br /> Intent, which requests enrollment in General Order No. R5-2008-0149, General Waste <br /> Discharge Requirements for In-situ Groundwater Remediation at Sites with Volatile Organic <br /> Compounds, Nitrogen Compounds, Perchlorate, Pesticides, Semi-Volatile Compounds and/or <br /> Petroleum Compounds (General Order). Based on information in your submittal, it is our staff's <br /> determination that this project meets the required conditions to be approved under General <br /> Order No. R5-2008-0149. All of the requirements contained in the General Order and those <br /> listed in the General Information section below are applicable to your project. You are assigned <br /> Order No. R5-2008-0149-041. <br /> Project Location: <br /> The project is in San Joaquin County, Township 25S, Range 8E, Section 19, Mount Diablo <br /> Baseline & Meridian; Assessor's Parcel Number 261-002-007; Latitude 37.75 degrees N, <br /> Longitude 121.14 degrees W. <br /> Project Description: <br /> Ripon Farm Service is removing nitrogen from groundwater that resulted from historic <br /> operations. The project will promote reducing conditions in groundwater in a pilot study <br /> application area. The reducing conditions will biologically convert nitrate to dinitrogen gas, <br /> thereby removing it from groundwater. Ripon Farm Service will add the proprietary carbon- <br /> based product, EHC® Carbon-Only, to shallow groundwater at three locations on the property. <br /> One location is near former boring B-34, which will be a single injection point adjacent to three <br /> temporary monitoring points that will be used to determine the subsurface radius of distribution. <br /> The second and third locations will be four injection points around MW-103, and four injection <br /> points around MW-104, which are near the center of the nitrogen pollution. <br /> In the 16 August 2011 letter, Ripon Farm Service committed to preparing a contingency plan <br /> within 30 days of a request from Central Valley Water Board staff. The contingency plan will be <br /> KARL E. LONOLEY SCD, P.E.. CNNR I PAMELA C. CREEDON P.E.. SCEE, EXECUTIVE OFFICER <br /> 11020 Sun Canter DrNa#200,Rancho Cordova,CA 95670 I www.waterbOardS.ca.gov/centralvalley <br /> r,ntC.O«o PAPCR <br />