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California Ieional Water Quality Con' A Board a <br /> Central Valley Region <br /> Katherine Hart, Chair <br /> Arnold <br /> Linda S.Adams 11020 Sun Center Drive#200,Rancho Cordova,California 95670-6114 hwarzenegger <br /> Secretary for Phone(916)464-3291 -FAX(916)464-4645RECEIVED r �'\ /c Governor <br /> Environmental http://www.waterboards.ca.gov/centralvalley KC V {.,. <br /> Protection <br /> 22 November 2010 N'-Yd 2 4 2010 <br /> John Anderson, c/o Kent Caffee EW�MRis�ALH AUM <br /> 611 North Street <br /> Woodland, CA 95695 <br /> LEAD AGENCY STATUS, DOCUMENT REVIEW, <br /> FOR <br /> IRST STUDENTUNAUTHORIZED <br /> RELEASE CASE NO. 390659, STOCKTON TRUCK TERMINAL (AKA F <br /> BUS FACILITY, AKA A. W. HAYES FACILITY), 2005 NAVY DRIVE, STOCKTON, <br /> SAN JOAQUIN COUNTY <br /> In a letter dated 28 September 2010, the San Joaquin County Environmental Health <br /> Department referred the lead agency for the above case to the Regional Water Quality Control <br /> Board (Regional Water Board). On 20 October 2010 Regional Water Board staff contacted <br /> Mr. Kent Caffee, representing John Anderson, the Responsible Party, for the purpose of <br /> scheduling a meeting to discuss the case. And on 29 October 2010, Regional Water Board <br /> staff met with Mr. Caffee to determine the most practical and cost effective path to reach site <br /> closure. At that meeting we agreed that: <br /> 1) All monitoring wells be sampled one time for constituents of concern, including MW-2, <br /> which was uncovered but not sampled in May 2010, and <br /> 2) A soil and groundwater investigation be conducted to determine whether the former <br /> underground storage tanks were the source of the volatile organic compounds <br /> contamination. <br /> I reviewed the Workplan for Groundwater Investigation November 2010 (Workplan), received <br /> 19 November 2010 from your consultant KR Environmental. The Workplan proposed <br /> advancing two soil borings (SB-1 and SB-2, see Figure 2), and analyzing soil and grab <br /> groundwater from the borings for total petroleum hydrocarbons as diesel (TPHd), TPH as <br /> gasoline (TPHg), with benzene, toluene, ethylbenzene, xylenes (BTEX), and volatile organic <br /> compounds. The Workplan also proposed conducting one round of groundwater monitoring <br /> from all monitoring wells (MW-1 through MW-4), and conducting analyses for TPHd, TPHg, <br /> BTEX, and volatile organic compounds. Depth to water varies from 8' to 12' below ground <br /> surface. <br /> The Workplan is approved. Your combined monitoring and investigation report is due <br /> 28 February 2011. Pending staff receipt of the report (hard copy and electronically to <br /> GeoTracker), the data will be reviewed for further adjustments to this directive letter, which <br /> may include stopping the monitoring, increasing to quarterly monitoring or decreasing to <br /> annual monitoring, and/or changing the analytical suite of chemicals. If the monitoring data <br /> show that a low risk closure is appropriate per Appendix A — Reports, Tri-Regional Board Staff <br /> Recommendations For Preliminary Investigation And Evaluation of Underground Storage Tank <br /> California Environmental Protection Agency <br /> ZaRecycled Paper <br />