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van, <br /> THOMAS R.FLINNP.0.BOX 1810.1$10 E.HAZELTON AVENUE <br /> - <br /> DIRECTOR - STOCKTON,CALIFORNIA 96201 <br /> t (209)468.3000 FAX(209)468-2999 <br /> a www.sjgov.org <br /> THOMAS M.GAU <br /> DEPUTY DIRECTOR <br /> MANUEL SOLORK) Wwl&g for YOU <br /> DEPUTY DIRECTOR <br /> STEVEN WINKLER <br /> DEPUTY DIRECTOR <br /> ROGER JANES July 28, 2007 <br /> BUSINESS ADMINISTRATOR <br /> Mr. Todd Del Frate <br /> California Regional Water Quality Control Board <br /> 11020 Sun Center Drive, 4200 <br /> Rancho Cordova, California 95670-6114 <br /> SUBJECT: FIRST QUARTER 2007 GROUNDWATER MONITORING REPORT, <br /> CORRAL HOLLOW SANITARY LANDFILL <br /> Dear Mr. Del Frate: <br /> Enclosed please find the First Quarter Groundwater and Surface Water Monitoring Report for the <br /> Corral Hollow Sanitary Landfill. <br /> Monitoring was performed in accordance with the monitoring program included with the Waste <br /> Discharge Requirements (WDRs)approved by the Regional Water Quality Control Board for this site. <br /> Progress of Corrective Action Measures is submitted during the first and third quarters, and is <br /> therefore not included in this quarterly report. TO-14 analyses of soil gas is included in this report, <br /> along with concentrations of major gasses(02, CO2, CH4, and N2) per your request. <br /> Concentrations of parameters in all wells were within established concentration limits. VOCs were not <br /> reported in any groundwater well except well MW-5 (the impacted well)where six VOCs were <br /> reported, none above 10 ppb. These low concentrations are consistent with the previous quarter. <br /> I certify under penalty of law that I have personally examined and am familiar with the information <br /> submitted in this document and all attachments and that, based on my inquiry of those individuals <br /> immediately responsible for obtaining the information, I believe that the information is true, accurate, <br /> and complete. I am aware that there are significant penalties for submitting false information, <br /> including the possibility of fine and imprisonment. <br /> If you have any questions, or if you wish further information, please call me at(209)468-8504. <br /> Sincerely, <br /> W. MICHAEL CARROLL, PE <br /> Senior Civil Engineer <br /> WMC:sc <br /> N:\1 Corral Hollow\Groundwater Monitoring\Repts2007\2ndQ Report\CH2ndQtr07letter.doc <br /> Enclosure <br /> c: Robert McClellon, Environmental Health Department <br /> LA 21850 <br />