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11 Ripon Farm Service Incorated Page 2 <br /> 932 South Highway 99 East Frontage Road October 18, 2011 <br /> Ripon, California 95366 <br /> through B13 and the installation of MW-4 and MW-5. The report is available on <br /> Questys, file XR0005901. <br /> 04/19/96 Date of Work Plan Addendum — April 1996 submitted by -Advanced <br /> GeoEnvironmental, Inc. proposing the advancement of four soil borings at the <br /> Jimco Truck Plaza and one soil boring at the�Ripon' Farm Service site. The work <br /> plan is available in the Unit IV files. <br /> 10/30/96 Date when three soil borings (1314 through BI 6) .were advanced'at the Jimco <br /> Truck Plaza facility and one soil boring (617) was advanced on the Ripon Farm <br /> Service site. <br /> 01/15/97 Date of Quarterly' Report — December, 1996 submitted by Advanced <br /> GeoEnvironmental, Inc. that described the advancement of on- and off-site soil <br /> borings B14 through 617. The report is available on Questys, file XR0005896. <br /> 09/08/97 Date of Work Plan Addendum submitted by;Advanced GeoEnvironmental, Inc. <br /> proposing the installation of three groundwater monitoring wells at the Jimco <br /> Truck Plaza facility, two soil vapor extraction(SVE)/in-situ air sparging (IAS) wells <br /> at the Ripon Farm Service site, and performance of an.eight-hour SVE pilot test <br /> and a 96-hour IAS pilot test. The addendum is available in the Unit IV files. <br /> 02/10/98 Date of Work Plan Addendum submitted by.:Advanced GeoEnvironmental, Inc. <br /> proposing the advancement of one soil boring to total depth of approximately 60 <br /> feet below surface grade (bsg) if field observations indicated the petroleum <br /> hydrocarbon contamination exceeded total depth of 35 feet bsg. <br /> 05/11-13/98 Dates when on-site borings B18 and B19 were completed as dual-remediation <br /> pilot test wells VW-2 and VW-1, respectively, and off-site soil borings B20 <br /> through .1322 were completed as groundwater monitoring wells MW-6 through <br /> MW-8, respectively, at the Jimco Truck Plaza `site. <br /> 07/20/98 Date of Quarterly Report— May 1998 submitted by Advanced GeoEnvironmental, <br /> Inc. that described the advancement of soil borings B18 through B22 and <br /> completion of B18 as SVE/IAS well VW-2, B19 as SVE/IAS well VW-1, onsite; <br /> and B20 as MW-6, B21 as MW-7 and B22. as MW-8; off-site. The report is <br /> available on Questys, file XR0005827.. <br /> 11/16/98 Date when an eight-hour SVE pilot test was performed at the site. <br /> 11117-20198 Dates when an IAS pilot test was performed at the site. <br /> E <br /> 06/01/99 Date of Corrective Action Plan — June, 1999 submitted ' by Advanced <br /> GeoEnvironmental, Inc. that reported the results from performing the SVE and <br /> IAS pilot tests and compared soil remedial alternatives °SVE, excavation, in-situ <br /> soil bioremediation and natural attenuation; and groundwater remedial <br /> alternatives ]AS-vapor extraction, groundwater- extraction, in-situ <br /> bioremediationlbioenhancement and natural attenuation, and recommended <br /> SVEIIAS methods to remediate petroleum hydrocarbon-impacted soil and <br /> groundwater at this site. The corrective action plan is available on Questys, file <br /> XR0005814. <br /> l <br />