|
California Regional Water Quality Control Board `
<br /> Central Valley Regioty , I a �,�. HEALM
<br /> Robert Schneider,Chair
<br /> Winston A.13ickox Gray Davis
<br /> Secretary for Sacramento Main Office 0 jPCT 14 PM 12' 3' Governor
<br /> SecEnviroaryfor Internet Address: http://www.swreb.ca.gov/rwgc
<br /> Protection 3443 Routier Road,Suite A,Sacramento,California 95827-3003
<br /> Phone(916)255-3000•FAX(916)255-3015
<br /> 10 October 2003
<br /> Mr. James Fisk
<br /> J&L Market ".
<br /> 8125 E1 Dorado Street
<br /> French Camp, CA 95231
<br /> REVIEW OF DRILLING REPORT,FIRST QUARTER 2003 REPORT,SECOND QUARTER 2003
<br /> REPORT,AND THIRD QUARTER 2003 REPORT,J&L MARKET, 8125 S. EL DORADO ST.,
<br /> FRENCH CAMP,SAN JOAQUIN COUNTY
<br /> I reviewed the 17 March 2003 Drilling Report, the 17 April 2003 First Quarter 2003 Report,
<br /> the 30 June 2003 Second Quarter 2003 Report, and the 29 September 2003 Third Quarter 1003 Report,prepared
<br /> on your behalf by Upgradient Environmental Consultants. These reports document the additional soil and
<br /> groundwater investigation conducted in February 2003 and three quarters of groundwater monitoring conducted
<br /> in March,June,and August of 2003. The Drilling Report states that,after overexcavating the site in 1995, soil is
<br /> only impacted near the northern portion of the station building. The Drilling Report also states groundwater
<br /> plume delineation is not complete to the northeast and southwest. The monitoring reports state that additional
<br /> monitoring is necessary to establish trends for contaminants. Six quarterly monitoring events have been
<br /> submitted since June 2002. Maximum concentrations from monitoring wells JLM3 through JLM-5 include:
<br /> Total Petroleum Hydrocarbons (TPH)) as gasoline (TPHg,4,800 gg/L), as diesel (TPHd, 1,400 µg/L),benzene
<br /> (260 µg/L),toluene(31 gg/L), ethylbenzene(530 gg(L),xylenes (320 gg/L),tertiary butyl alcohol (40 µg/L),
<br /> methyl tert-butyl ether(MtBE, 120 gg/L), and 1,2-dichloroethane (1,2-DCA, 55 µg/L).
<br /> Groundwater concentrations generally appear to vary seasonably, with higher concentrations occurring as
<br /> groundwater levels rise in the Spring. The exception to the seasonal concentration variability occurs with the
<br /> 1,2-DCA detected in monitoring well JLM-5,which has remained reasonably stable in the 30-40 µg/L range. The
<br /> groundwater flow direction varies from southeast to northeast. Depth to water varies seasonably from 25 to 30
<br /> feet below ground surface.
<br /> I concur with the statements that 1)the soil borings have delineated the remaining petroleum hydrocarbon
<br /> contamination in soil, and 2)the groundwater plume requires additional characterization to establish vertical and
<br /> lateral extent. Please submit a workplan by 1 December 2003 to install additional groundwater monitoring
<br /> wells.
<br /> Also, on 5 August 2003 1 sent a letter to you staring that your Fourth Quarter 2001 Report is incomplete,in that
<br /> you are out of compliance with the monitoring and reporting requirements specified in the California Code of
<br /> Regulations,Title 23, Chapter 16 Article 12; Sections 2729 and 2729.1 for Electronic Data Format(EDF), a
<br /> requirement for all reports generated since 1 September 2001. As of this date,only the groundwater data EDF
<br /> California Environmental Protection Agency
<br /> 0 Recycled Paper
<br /> The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption.
<br /> For a list of simple ways you can,Wuce demand and cut your energy costs,see our Web-site at http://www.swrcb.ca.gov/mgcb5
<br />
|