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PqU 1/y J. �qC%FOiR�`P MANUEL LOPEZ DIRECTOR February 15, 200: 1 COUNTY OF SAN JQUI DEPARTMENT OF PUBLIC WORKS P.O. BOX 1810 - 1810 E. HAZELTON AVENUE STOCKTON, CALIFORNIA 95201 (209) 468-3000 FAX (209) 468-2999 TO: Robert McClellan, Lead Senior R.E.H.S. Public Health Services Environmental Health Division FROM: Michael Kalish Associate Engineer THOMAS R. FLINN DEPUTY DIRECTOR THOMAS M. GAU DEPUTY DIRECTOR STEVEN WINKLER DEPUTY DIRECTOR SUBJECT: REMEDIATION PLAN FOR HYDROCARBON CONTAMINATION IN THE SEPTIC SYSTEM AT THE LOVELACE MATERIALS RECOVERY FACILITY AND TRANSFER STATION This letter is in response to two related "Notices to Abate" dated January 21, 2001, and January 25, 2001. The first "Notice To Abate" stated that the septic system was pumped and found to contain 8 ppm TPHG and 50 ppm TPHD and that the most probable source of the contaminants was the truck wash system. The notice included the recommendation that "the use of the truck wash system should be discontinued until such time as the system can be shown to operate as designed without discharge of hydrocarbons to the septic system." The second "Notice To Abate" stated that the "facility has allowed oils/petroleums from truck washing operations to enter septic tank". This notice included the recommendation to empty the septic tank and dispose of the contents as a hazardous waste and determine why oil is entering the tank and correct the problem. Solid Waste Division engineering staff has visited the site and discussed the correct operation of the system with the on-site Solid Waste Foreman. It is our belief that due to a temporary lapse in the maintenance of the wash water reclamation system, the system built up hydrocarbon material in excess of the amount that the system was designed to accommodate. To comply with the recommendations from the two notices, staff at the Lovelace facility have taken the following steps: