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CLEANUP AND ABATEM.-AT ORDER NO. 5-00-704 <br />FORMER CHEVRON STATION #9-5775 <br />301 WEST KETTLEMAN LANE <br />SP131, SAN JOAQUIN COUNTY <br />Quarterly Reporting <br />11. By 15 July 2000, and the 15th day of the month following each calendar quarter, submit a <br />quarterly progress report for the former CheATon Station #9-5775 site that provides the results of <br />groundwater monitoring, sample analysis and site work performed during the previous calendar <br />quarter. Groundwater analysis is to include total petroleum hydrocarbons'as gasoline, benzene, <br />toluene, ethyl benzene, total xylenes, ethylene dibromide, 1,2-dichloroethane, MtBE, TBA, <br />DIPE, ETRE, TAME, ethanol, and *methanol. The quarterly progress reports shall include: <br />a. Groundwater elevation contour maps <br />b. Pollutant concentration contour maps <br />c. Groundwater purge data sheets <br />d. Tabular results of current and all previous data <br />e. Narrative describing the work presented in the report, including methodology <br />f. Discussion of the status of investigation and cleanup activities <br />g. Evaluation of the effectiveness of cleanup activities and an estimate of pollutants treated <br />versus pollutants remaining <br />h. A schedule for future activities <br />i. Include data from the last three months, document treatment or disposal of any <br />contaminated soil or groundwater generated during the investigation and cleanup <br />activities. <br />12. If groundwater monitoring indicates the groundwater plume has migrated beyond lat rally or <br />vertically defined limits during the quarter, Ahe quarterly report shall include a work plan and <br />schedule, with work to begin within thirty days of report submittal, to define the new plume <br />limits. <br />MoCAI(LTON, Executive Officer <br />Dated: 20 April 2000 <br />0 <br />E, <br />