SITE INFORMATION AND CORRESPONDENCE_FILE 2

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San Joaquin County DIRECTOR Po N Donna Heran, REHS Environmental Health Department ASSISTANT DIRECTOR 600 East Main Street Laurie Cotulla,REHS (}mpj '' < Stockton, California 95202-3029 PROGRAM COORDINATORS Carl Borgman, REHS P • Website: www.s ov.or /ehd Mike Huggins,REHS,RDI 46i E w �� 19 8 Margaret Lagorio,REHS Phone: (209)468-3420 Robert McClellon,REHS Fax: (209)464-0138 Jeff Carruesco,REHS,RDI Kasey Foley, REHS KEN GILLIESDtL Q 2007 GILLIES TRUCKING P O BOX 8303 STOCKTON CA 95208 RE: Gillies Trucking SITE CODE: 1703 3931 Newton Road RO: 0264 Stockton, CA 95205 The San Joaquin County Environmental Health Department (EHD) met with your new consultant, Mr. Stephen Muir of Stephen G. Muir, Consulting Geologist and Geophysicist (Muir) on 15 November 2007 to discuss your site status and the general criteria required to move your site toward regulatory closure. Margaret Lagorio and Nuel Henderson represented the EHD at the meeting. On 27 November 2007, an EHD representative met with Mr. Muir at your site to inspect the monitoring wells on your site and to discuss potential approaches toward completing the site characterization and remediating impacted soil and groundwater on your site. During the 27 November site visit, it was noted that most monitoring wells required some degree of rehabilitation, ranging from replacing the locking well caps to regrouting annular spaces where the old grout seal had dropped as much as 7 feet. Most wells require removal of dirt that has infiltrated into the well box; one well had a disintegrating well box. You are directed to make all necessary repairs and conduct such wellhead maintenance as is required to ensure well integrity and sample data reliability. An improperly abandoned soil boring was also noted that must be properly destroyed. During both meetings the current requirements to bring your site up to date with regulatory requirements were discussed. In accordance with California Code of Regulations, Title 23, Division 3, Chapter 30, Sections 3890-3895 all reports issued since January 2005 must be uploaded to GeoTracker, the site database maintained by the California State Water Resources Control Board. You must also submit to GeoTracker the results of a professional well location and casing elevation survey, which has not yet been performed. You are directed to complete the well head survey and comply with all requirements for data and report submissions to GeoTracker. You are directed to reinitiate quarterly groundwater monitoring beginning with a monitoring event for the fourth quarter 2007. As noted in the EHD letter of 31 October 2007, a reduction of groundwater sampling for non-critical monitoring wells will be considered by the EHD if proposed by your consultant with technical justification provided for the proposed sampling schedule. The proposed schedule must meet the criteria specified by the EHD in the letter.