ARCHIVED REPORTS_XR0006756 - Laserfiche WebLink

Home Browse Search

I ' REPORT QUARTERLY GROUNDWATER MONITORING FIRST QUARTER - JANUARY 1997 ' Canepa's Car Wash 6230 Pacific Avenue ' Stockton, California ' January 27, 1997 I10 INTRODUCTION Condor Earth Technologies, Inc , (Condor) performed quarterly groundwater monitoring at the Canepa's Car Wash facility located at 6230 Pacific Avenue in Stockton, California (Figure 1, Appendix A) on January 15 and 16, 1997 The groundwater monitoring was performed at the request of Mr Remo Canepa, facility owner, in response to a recent communication from Mr Ronald Rowe of ' the San Joaquin County Public Health Services, Environmental Health Division (PHS/EHID) directing continuation of the quarterly groundwater monitoring The groundwater samples were analyzed at a certified laboratory for total petroleum hydrocarbons, quantified as gasoline (TPI -G), for benzene, I toluene, ethyl benzene, and xylene (BTEX), and for methyl tertiary butyl ether (MTBE) as requested by the PHS/EHD lie This report includes a description of the field procedures and laboratory analyses conducted during the January, 1997, quarterly monitoring A discussion of the current and historical groundwater data is presented in Section 5 0 (Discussion of Results) 2 0 SUMMARY OF RESULTS The following summary describes the data collected during the most recent quarterly monitoring • Groundwater Analvses Gasoline was detected in the groundwater samples from MW- I at 6 5 mg/L, MW-2 at 16 mg/L, and SV-1 at 120 mg/L BTEX constituents were detected in groundwater samples from MW-1, MW-2, MW-7 and SV-1 ranging from I 3 6 µg/L to 41,000 µg/L MTBE was detected in groundwater samples from MW-1 at I 10 µg/L, MW-2 at 60 µg/L, MW-3 at 12 dig/L, and SV-1 at 1,400 ttg/L TPH-G was not detected at or above the reported laboratory detection limit in the groundwater I samples collected from MW-3, MW-4, MW-5, MW-6, MW-7, or MW-8 BTEX ■ 4017tSLElUe11t5 wGle 110t de-MUCLl dL Ur dbove the MPUrLCd 1dUUrdLUry UCLCL.L1011 1imiLb in groundwater samples collected from MW-3, MW-4, MW-5, MW-6, and MW-8 MTBE was not detected at or above the laboratory reported detection limit in groundwater samples collected from MW-4, MW-5, MW-6, MW-7, or MW-8 The laboratory results are presented in Section 4 2, Table 1 and Figure 2, Appendix A • Groundwater Elevation The depth to groundwater was approximately 42 feet below the ground surface at the site The groundwater elevation ranged from 29 66 to 28 65 feet below sea level (bmsl) Groundwater elevation contours are shown in Figure 3, Appendix A 1 1 I �i� CONDOR