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Herman& Helen % Marina First Quarter 2000 (,roundwatt.r Monitoring April 20 2000 Page 7 4 FIRST QUARTER,2000, SURFACE WATER MONITORING ' 41 FIELD METHODOLOGY On March 17 2000 a Condor representative was on site to conduct quarterly surface water monitoring activities rhe monitoring activities included the collection of surface water samples from the drainage ditch and island ' drainage channel located east and south of the site, respectively (Figure 5 Appendix A) Four surface water samples were collected with a FeflonO dipping cup and transferred to two 40-milliliter glass vials fitted wtth FLflong-lined caps SLlrfaef, water samples DDS (drainage ditch south) and DDN (drainage ditch north) were ' e.ollected appmxnriately five feet and 100 feet north of Eight Mile Road respectively Surface water samples IDCW (island drainage channel west) and lDC F (Island drainage channel east) were collected from the western terminus of the. Island drainage channel and approximately 100 feet cast of the confluence of the dratnage ditch ' and the Island drainage channel respectively Each sample container was labeled and placed In a cooler chilled with Ice and dcllvcred tinder chain-of-custody procedures to OeoAnalytical Laboratories Inc in 'Modesto, California within 24 hours of sample collection Results of the laboratory analyses are discussed in Section 4 3 ' 4.2 LABORATORY ANALYTICAL METHODOLOGY The laboratory analytical mctllods for the surface water samples collected on March 17, 2000, are summarized in ' Table 4 TABLE 4 ' Laboratory Analytical Methods Analytes Gasoline BI"F-X TPF;_CT I Oxygenates/Additives Analytical Methods 602 5030/I,[J] T 8260 0 3 [ig/L (BBE) + - - 1 0 µg/l' Detection 1 imits 0 05 mg/1 0 6 µg/1 (X) I 10 0 µg/1 (tert Butanol) mg/L =milligrams pt r 11tLr(parts per million) µg/L micrograms per liter(parts per billion) BTEX =benzene toluene ethyl benzene and total xylenes 1 PH-G =total petroleum hydrocarbons quantified as gasoline Gasoline Oxygenates/Additives=methyl tertiary butyl ether(MTBF) ethanol tertiary-butanol di-isopropyl ether(DIPP) ethyl tertiary-butyl ether(ETBE)and tertiary amyl methyl t,ther(TAMF) 4 3 LABORATORY ANALYTICAL RESULTS BTEX and TPH-G were not detected at or above the laboratory reported detection limits in surface water samples DDN and IDCE Benzene and toluene were detected at concentrations of 1 4 and 0 37 µg/l in surface water ' samples DDS and IDCW, respectively The other BTEX constituents and TPH-G were not detected at or above the laboratory reported detection limits in surface water samples DDS and IDCW MTBE was detected in surface water samples DDN and DDS at concentrations of 19 and 4,700 µg/1, respectively ,MTBE was not E detected at or above the laboratory reported detection limits in surface water samples IDLE or IDCW None of the gasoline oxygenates other than MTBE were detected at or above the laboratory reported detection limits in any of the surface water samples The detection limits for the other gasoline oxygenates were raised, however, for the surface water sample DDS A summary of the current and historical laboratory analytical results of the . surface water samples are presented in Table 5, on the next page The current laboratory analytical results of the surface water samples are shown in Figure 5, Appendix A Ios %&I-W �i CONDOR