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i ' IlLImin h tlLI,n % Mann sLUInd QUartLr 1')99 (moundwan.r Monitoring Autu%l2(I 1999 � I'dgL 7 4 SF( OND QtJARTER, 1999, SIJRFACF WATER MONITORING 4.1 FIELI) METHODOLOGY On .lune 30 1999 a C ondor represLntatn1L was nn tilts to conduct quarterly SurfacL eater monitoring, ar-ON ities 111L Inonitoring a(AIN AILS u)LludLd the. cnllcctlon of surface eater Samples from thL drainage ditch and Island drainagL Lham1L1 loedtLd Last and south of the Sik, respeLtivcly I our Surface, water samples were collected with ' a Teflon(-) dipping Lup and transitrrLd to two 40-milliliter glass vials fitted with Ieflon0-lined caps surface %4atLr SamplLS DDS (drainage ditch south) and DI)N (dralnagL ditch north) were collected approximately five feet and 100 ILLI north (If Light Mlle Road, respeLtiN ely SurfaLe water samples ID(W (Island drainage channel ' wLst) and ID( 1 (island dralnagL Lhant"ILl cast) wLrc collLULd from the, %VLStLrn terminus of the Island drainage channel and approxnnatLly 100 feet Last Of thL LonfluencL of the dratnagL ditch and thL Island drainagL channel, respect]-%Lly (ILfLr to 1-11.urL 5) 1 ash SatnplL LontalnLr was labeled and placed In a Looler chilled with ILL. and I dellvLrcd undt r Lhaln-ol-custody procedures to ()LoAnalytical I aboratoncs, Inc, , In Modesto, t allfornld, w(thin 24 hours of sample cnllLctlon Result,, of the laboratory analyses arL discussed In 1-Lc.tlon 4 3 4.2 LABORATORY ANALYTICAL METHODOLOGY Vie laboratory analytical methods for the surface water samples collLctLd on June 30, 1999, are summarl/ed In ' Table 4 TABLE 4 Laboratory Analytical Methods Anal)tis B R X 11,1141 Gasoline Oxygenates/Additives AnalytlLal VILthods 602_ 5030/LUI f 8260 0 3 lig/I (BI I-) 1 0 µl0 Detection Limits 0 6 pg/ (X) 0 OS M-1/1� 10 0 gg/L (tert Butanol) B rh X bLIIZLnL toluulL cth)1 bin7cnc and total x)kn+_s I PI14 0 total pe.trolulm h)drocarbons rluantlfiLd as P-asollne (sasolmE()\�gLI LS'AddltivL%=mcth)Itcrttary hutylether(MIRE1 ethanol tLrtlar)-butanol di-v opropN I LthLr([)11')~) ethyl tLmary-hut)l ether(F3 RF)and tLrtlary amN 1 methyl UhLr(I AMI-) 4 3 LABORATORY ANALYTICAL RESULTS No BTF,X constituents or TPH-G were detected at or above the laboratory reported detection limits In any of the I surface water samples M I BE was detected in surface water samples IDCW, DDN and DDS at concentrations of l 4, 5 4, and l 8 µg/l, respectively MTBE was not detected at or above the laboratory reported detection limits In surface water sample I(DE None of the gasoline oxygenates other than MTBE were detected at or above the laboratory reported detection lunits in any of the surface water samples A summary of laboratory analytical results of the Surface water samples is presented In Table 5, on the nLxt page, and in figure 5, Appendix A IL� coNDOR