Laserfiche WebLink
San Joaquin County <br /> °�`" Environmental Health Department <br /> DIRECTOR <br /> 1868 East Hazelton Avenue Linda Turkatte, REHS <br /> Stockton, California 95205-6232 PROGRAM COORDINATORS <br /> _ Robert McClellan,REHS <br /> ! Jeff Carruesco, REFS, RDI <br /> C9<<F pR P Website: www.sjgov.org/ehd Kasey Foley, REHS <br /> Phone: (209)468-3420 Rodney Estrada, REFS <br /> Fax: (209) 464-0138 Adrienne Ellsaesser, REHS <br /> January 22, 2015 <br /> Ken Gillies <br /> Gillies Trucking <br /> P O Box 3 <br /> Stocktonkton,, CA 95208 <br /> Subject: Work Plan Approval Modification <br /> Gillies Trucking LOP Site Code: 1703 <br /> 3931 Newton Road <br /> Stockton, CA 95205 <br /> By letter dated 17 September 2014 San Joaquin County Environmental Health Department (EHD) <br /> had recommended sampling monitoring wells GT-6, GT-14A, GT-14B, GT-16B, GT-17A, GT-17B, <br /> GT-18A, GT-18B, GT-20, GT-31 and GT-32 for total petroleum hydrocarbons quantified as diesel <br /> (TPHd) to identify wells that would qualify for destruction by pressure grouting rather than by over- <br /> drilling, which could save significant well destruction expense. At the same time, to address <br /> concerns expressed by the Central Valley Regional Water Quality Control Board (CVRWQCB) <br /> regarding the lack of analytical data for the removal of the former waste oil underground storage <br /> tank (UST), the EHD recommended also sampling the above listed wells for dissolved cadmium and <br /> zinc. <br /> By letter dated 30 October 2014, the EHD approved Revised Letter Workplan for Select <br /> Groundwater Monitoring and Limited Soil Investigation Gillies Trucking Site, 3931 Newton Road, <br /> Stockton (WP), dated 02 October 2014, prepared and submitted by Stephen G. Muir Consulting <br /> Geologist & Geophysicist (Muir) on your behalf. This work plan proposed to conduct the <br /> groundwater sampling as recommended by the EHD and to directly sample soil beneath the former <br /> waste oil UST location and analyze the soil for waste oil constituents. The soil data from the tank <br /> removal is not available nor is a summary or characterization of the data, therefore the former waste <br /> oil UST is essentially an unassessed UST. Cadmium and zinc were detected in two groundwater <br /> samples recently that cannot be ruled out as being related to the former waste oil UST. <br /> The EHD has recently received a draft of Review Summary Report — Closure, Fifth Review — <br /> December 2014, from the State Water Resources Control Board, Cleanup Fund (CUF) wherein the <br /> CUF recommends case closure for your site; the EHD is in process of responding to the CUF <br /> regarding their recommendation. From the EHD letters referenced above, it can be seen that the <br /> EHD largely agrees that your site is ready for closure and the EHD has been working at resolving <br /> the waste oil UST issue raised by the CVRWQCB and minimizing the expense for destroying the <br /> monitoring and remediation wells installed as part of your corrective actions. <br /> As the approved sampling of select monitoring wells is primarily for determining the more cost <br /> effective methods for destroying the wells which is a necessary part of the closure process, please <br /> Work Plan Approval Modification Letter 0115 <br />