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iCel MARCH 1996 QUARTERLY STATUS REPORT (CONTINUED) • Site map delineating contamination contours for groundwater and soil based on recent data Figure 3 is a site plan that presents the analytical results from th roundwater amples collected on March 5, 1996 A "zero" line for groundwater contamination was not included in the figure because BTEX parameters and TPH-D were not detected in any of the samples ,/Figure 4 is a site plan that presents a summary of the analytical results from all the soil samples collected from the site. A TPH-D "zero" line and 10-ppm line are indicated in the figure. • Estimates of the quantity of contamination remaining in soil and groundwater, and time for completing remediation Based on the results of the second supplemental site assessment, approximatel6,000 cubic yards of soil containing detectable concentrations of TPH-D are esthmat o remain beneath the site. • Method of cleanup proposed or implemented to date Greyhound will implement the recently approved "Offsite Assessment and Feasibility Study" work plan, dated September 1995 A feasibility study report in which a minimum of two viable soil cleanup alternatives are evaluated will be submitted. • Times and dates equipment was not operating, cause of shutdown, and a corrective action plan to ensure similar shutdowns do not reoccur Not Applicable. • Time schedules for completion of the site investigation and remediation Greyhound is currently securing the permits required to ins off-site monitoring well during the offsite assessment. • Method of disposal and disposal location of released hazardous substances and any contaminated soil, groundwater, or surface water During the March 1996 site visit, groundwater generated while purging the onsite monitoring wells was discharged to the sanitary sewer following receipt of approval from Mr Morns L. Allen of the City of Stockton Department of Municipal Utilities. PARESSYROLWOL1 WP1728878108969108969LOi DOC 3