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SECOR <br />December 15, 2000 <br />Project 077 41991 043 <br />Mr Richard C Prima, Jr <br />City of Lodi Public Works Director <br />221 West Pine Street <br />Lodi, CA <br />RE Discharge Report for November, 2000 <br />Former Chevron 99-5775 <br />301 West Kettleman Lane <br />Lodi, California <br />Cleanup and Abatement Order No 5-00-704 <br />Wastewater Discharge Permit #295 <br />Dear Mr Prima <br />This letter, prepared by SECOR International incorporated (SECOR) on behalf of <br />Chevron Products Company (Chevron), presents operating data for the groundwater <br />extraction (GWE) system at the site referenced above (Figures 1 and 2) Chevron <br />discharges treated groundwater at the subject site under City of Lodi Wastewater <br />Discharge Permit 4295 <br />Extraction and treatment of groundwater was initiated on July 3, 2000 The GWE <br />system extracts groundwater from site wells EX -1, MW-14/EX-2, and EX -3 Extracted <br />groundwater is routed through a particulate filter, then three 2,000 -pound liquid phase <br />activated carbon vessels plumbed m series A treatment system schematic is shown on <br />Figure 3 <br />Summary of Violations <br />There have been no violations of the discharge limitations dunng the November <br />discharge period Concentrations of petroleum hydrocarbons and fuel oxygenates were <br />below detection limits in the effluent samples collected during this penod <br />Summary of GWE System Operation <br />Samples were collected form the influent port, midpoint 1 (between the first and second <br />carbon vessels), midpoint 2 (between the second and third carbon vessels), and the <br />effluent port on November 1, 8, and 29, 2000 Concentrations of petroleum <br />hydrocarbons and fuel oxygenates were reported as below detection limits in midpoints <br />1 and 2 and effluent samples (Table 1) Concentrations of total xylenes, methyl tertiary <br />M/7 Ail�oi( Roael Sxrlc 100 Rancho (mdo, a (1 950-0 WO �5h1 0400 910.ti61 0-40laX 1ritu ti((01 LWU <br />