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HENRY M. HIRATA <br />DIRECTOR <br />COUNTY Of SAN JOAQU f N THOMAS R. FLINN <br />DEPARTMENT OF PUBLIC WORKS DEPUTYDIRECTOR <br />P. O. BOX 1810 - 1810 E. HAZELTON AVENUE MANUEL LOPEZ <br />STOCKTON. CALIFORNIA 95201 DEPUTY DIRECTOR <br />(209) 468-3000 STEVEN WINKLER <br />FAX(209)468-2999 DEPUTY DIRECTOR <br />February 19, 1997 <br />Steve Rosenbaum <br />California Regional Water <br />Quality Control Board <br />3443 Routier Road r <br />Sacramento, California 95827 D <br />Z <br />SUBJECT: GROUNDWATER MONITORING - <br />FOOTHILL SANITARY LANDFILL <br />Dear Mr. Rosenbaum: <br />The results from the first quarter monitoring event for the <br />Foothill Sanitary Landfill showed a detection of Toluene in MW -1 <br />(background) and MW -2 at concentrations of 0.74 micrograms per <br />liter and 0.70 micrograms per liter, respectively (see attached). <br />For your information, the County will perform a retest of MW -1 <br />and MW -2 for Volatile Organic Compounds (VOC's) to confirm the <br />results. We will submit the results of the retest to you as soon <br />as we receive them. If you have any questions, please call me at <br />(209) 468-3066. <br />Sincerely, <br />GABRIEL KARAM <br />Senior Solid Waste Engineer <br />GK:WJ: vj <br />R.1WRGIN1A1 Z"ERS%FH-GWMON.SR <br />Attachment <br />c: Ed Padilla, Lead Senior REHS <br />Public Health Services <br />Environmental Health Division <br />LA 64201 <br />