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California Regional Water Quality Control Board <br /> i::-'on H. Hickox Central Valley Region Gray Davis <br /> ,retaryfor Governor <br /> ironmental <br /> Protection <br /> Sacramento Main Office <br /> Internet Address: http://www.swrcb.ca.gov/--rwgcb5 <br /> 3443 ROUtier Road,Suite A,Sacramento,California 95827-3003 <br /> Phone(916)255-3000•FAX(916)255-3015 <br /> 5 December 2000 <br /> Ms. Teresa Tanaka <br /> Linden County Water District <br /> P.O. Box 595 <br /> Linden, CA 95236 <br /> REQUEST FOR A GROUNDWATER MONITORING WORKPLAN, LINDEN COUNTY WATER <br /> DISTRICT WASTEWATER TREATMENT PLANT, SAN JOAQUIN COUNTY <br /> On 4 December 2000, we met to discuss the expansion plans for the Linden County Water District's <br /> wastewater treatment system and the technical report requirements included in the Board's 18 October <br /> 2000 correspondence requesting a Report of Waste Discharge (RWD). Because no groundwater data is <br /> available, at this time we cannot determine if additional percolation/evaporation ponds will be permitted <br /> onsite. The determination can be made after the District characterizes groundwater quality at the <br /> treatment facility. <br /> As part of the RWD, the District is required to install groundwater monitoring wells and characterize <br /> groundwater quality. Based on the proposed configuration of the wastewater ponds, it is anticipated that a <br /> minimum of four groundwater monitoring wells will be required to adequately determine the quality of <br /> the shallow groundwater beneath the site. The wells shall be located so the groundwater quality can be <br /> determined both upgradient and downgradient of the wastewater treatment and disposal areas. <br /> By 19 January 2001 the District shall submit a Groundwater Monitoring Well Installdtion Workplan. <br /> The workplan shall be prepared under the supervision of a California Registered Engineer or Geologist <br /> and shall be consistent with the attached guidance document, Items to be Included in a Monitoring Well <br /> Installation Workplan and a Monitoring Well Installation Report of Results. <br /> Please call me at (916) 255-3116 if you have any questions regarding this request for a technical report. <br /> TIMOTHY R. O'BRIEN <br /> Waste Discharge to Land Unit <br /> Lower San Joaquin River Watershed <br /> cc: Mike Huggins, San Joaquin County Environmental Health Department, Stockton <br /> California Environmental Protection Agency <br /> Ca Recycled Paper <br />