ARCHIVED REPORTS XR0000624 - Laserfiche WebLink

Home Browse Search

ti QUARTERLY STATUS REPORT (CONTINUED) • A site map delineating groundwater elevation contours based on recent data; Groundwater level data collected June 15, 1992 suggest a westerly flow ' direction with a hydraulic gradient of 0 002 ft/ft (Figure 2) • Analytical results from all previous sampling events including laboratory reports for the most recent sampling event and chain-of-custody documentation; A summary of the analytical results from all previous groundwater sampling events is presented in Table 3 A review of the data presented in this table indicates that none of the groundwater samples collected at the Stockton facility ' have exhibited BTEX or TPH-D contamination The analytical data summary for all soil sampling results is shown in Table 4 The laboratory results from the most recent groundwater sampling event, including chain-of-custody documentation, are included in Appendix A ' • Site map delineating contamination contours for soil and groundwater based on recent data; No contamination was detected in groundwater samples collected on June 29, 1992 (Figure 3) No additional soil sampling has been conducted at the Stockton facility since the preliminary site investigation (September 1991) A site map indicating areas of soil contamination was developed based on these data (Figure 4) The area of contamination appears to be limited, with constituents detected at MW-2, MW-3 ' and B-1 only Since the site is 100 percent paved with asphalt and concrete, vertical and honzontal migration of contamination due to recharge from precipitation should be insignificant r • Tank owner commitment letter; The requirements of the tank owner commitment letter are included in the cover letter submitted with this report Greyhound has approved the report and designated ES as their responsible party • The quantity of groundwater and vapors removed during the reporting ' period and cumulative to date; Not Applicable I I LbiL/SY132 3110179 REV 3 3