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L HEALTg �PARTMEN <br /> RONENTA <br /> ENVI <br /> SAN JOAQ UIN COUNTY <br /> Program Coordinators <br /> Carl Borgman, R.E.H.S. <br /> 304 East Weber Avenue,Third Floor ins R.EN S., R.D.I. <br /> Mike Bugg <br /> a ya Donna K. Reran, R•E H California 95202-2708 Margaret Lagorio,R•E•H S <br /> � i'••. `< Director Stockton, <br /> ' Laurie A. Cotulia,R•E•H.S• Telephone: (209)46S-3420 Robert MalescCleo, .E.H,S S. <br /> Assistant Director Jeff Carruesco,Rg.H.S. <br /> Q�iFo¢a Fax: {209)464-0138 Kasey Foley, <br /> Website:www-sjgov.orglehdl <br /> ' 312006 <br /> ALLEN FETTERS <br /> RIPON FARM SERVICE INC <br /> 5705 PORTSMOUTH CIRCLE <br /> NORTH STOCKTON CA 95219 SITE CODE= 1605 <br /> RE: Ripon Farm Service Inc. <br /> 932 South Highway 99 (Formerly 22871 South Highway 99) <br /> 5 Ripon, CA 95366 'owed Quarterly <br /> { <br /> Department (EHD) has rev <br /> San Joaquin County Environmental Health Dep 2446, by Advanced GeoEnvironmental, <br /> Quarter 2006 prepared on July 14, <br /> Report- Second Q led during <br /> our behalf for the above-referenced site' and1MW l0� be sip GE recommends <br /> Inc. (AGE) on y 4 MW 9, <br /> wells MW-1, MW-2, MW- groundwater <br /> samples be <br /> that only monitoring oundwater sampling event, and that the gr <br /> the third quarter 2006 gr to reduce expenses. EHD concurs with <br /> analyzed only for 1,2-dichloroethane carter s mpling event. However, continue collecting; <br /> these recommendations for the third q this and future quarterly groundwater <br /> i depth to water measurem a pose of detelrmini g he groundwater gradient. <br /> monitoring events for the p during the third quarter <br /> Although EHD agrees to a reduction of sampling MW-3 and Med annually please collect <br /> of 2006, the first quarterly sampling event each year <br /> EHD directs that theseew llsidun ggwells e sampled <br /> les from these drocarbons as gasoline (TPH- <br /> groundwater camp toluene, ethyl <br /> and analyze the groundwater samples for total petroleum Y and benzene, <br /> hydrocarbons as diesel (TPH-d), groundwater samples <br /> g}, total extractable petroleum byMW 4, MW-9 and <br /> xylenes (BTEX). Also, in addition to analyzing <br /> benzene, and total xy wells (MW-1, MW-2, <br /> for 1,2-DCA each quarter from the remaining les annually from these wells <br /> EHD directs that you collect groundwater samples <br /> 1V1W-10}' sampling event and analyze the samples for methyl tertiary butyl <br /> during the first quarterlTPH-d, and BTEX. <br /> ether(MTBE),TPH-g, <br /> is needed to define the groundwater plume containing 1,2-DCA <br /> Additional investigationAGE in QuarterlyRep <br /> down gradient of MW-9 and MW-10, as recommended by work Plan to EHD by October 25, 2046, that will <br /> Second Quarter 2006. Please submito he west-northwest of this site. <br /> address the lateral extent of 1,2-DCA <br />