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San Joaquin County DIRECTOR
<br /> Donna Heron,REHS
<br /> Environmental Health Department ASSISTANT DIRECTOR
<br /> 600 East Main Street Laurie Cotulla,REHS
<br /> N < Stockton, California 95202-3029 PROGRAM COORDINATORS
<br /> Mike Huggins,REHS,RDI
<br /> .i Margaret Lagorio,REHS
<br /> • r ., �:. P Website: www.sjgov.org/ehd Robert McClellon,REHS
<br /> 4��FOR� Phone: (209) 468-3420 Jeff Carruesco,REHS,RDI
<br /> Fax: (209) 464-0138 Kasey Foley,REHS
<br /> 22 July 2009
<br /> Ken Gillies
<br /> Gillies Trucking
<br /> P.O. BOX 8303
<br /> Stockton, CA 95208
<br /> Subject: Gillies Trucking
<br /> 3931 Newton Road
<br /> Stockton, CA 95205
<br /> By letter dated 23 January 2009, the San Joaquin County Environmental Health
<br /> Department (EHD) modified the sampling frequency for the wells on your site variously
<br /> to quarterly, semi-annually or annually. To comply with Resolution 2009-0042, recently
<br /> adopted by the State Water Resources Control Board, your sampling requirements have
<br /> been reduced further and now consist of the following:
<br /> • Semi-annual sampling — GT-6, GT-9, GT-10, GT-12B, GT-16A, GT-19, GT-20,
<br /> GT-21, GT-30, GT-31, GT-32; GT-33, and GT-WSW1; and
<br /> • Annual sampling — GT-1, GT-3, GT-12A, GT-13A, GT-13B, GT-14A, GT-15A,
<br /> GT-1513, GT-17A, GT-17B, GT-18A, and GT-18B.
<br /> At the meeting between you, your consultant and EHD personnel on 16 January 2009, it
<br /> was agreed that you would:
<br /> • Prepare and submit a work plan for a soil vapor extraction (SVE) test on existing
<br /> well GT-10 to determine if hydrocarbon vapor can be extracted from the
<br /> impacted soil in the GT-10 area at a sustainable and sufficient rate to warrant
<br /> installation of additional wells for further testing SVE to remediate the deep
<br /> impacted soil; and
<br /> • Prepare and submit a work plan to complete the lateral assessment of impacted
<br /> groundwater.
<br /> To date, neither of these documents has been received by the EHD or on GeoTracker.
<br /> In Quarterly Monitoring Report Fourth Quarter 2008 (QMR), your consultant, Stephen G.
<br /> Muir recommended redeveloping wells containing significant silt, characterizing each
<br /> well with natural gamma-ray and induction logs, preparing an updated sensitive receptor
<br /> survey (SRS) and updating the problem assessment report (PAR).
<br /> The EHD approves redeveloping wells containing significant silt. As new water supply
<br /> wells were reported to have been installed in recent years in the immediate vicinity, the
<br /> EHD also approves updating the SRS.
<br /> Monitoring Reduction and Comment Letter 0709
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