Laserfiche WebLink
Herman&Helen s Marina-Third Quarter 1999 Groundwater Monitoring <br /> October 26 1999 <br /> Page-4- <br /> TABLE 2 <br /> Laboratory Analytical Results <br /> Groundwater Samples (September 23, 1999) <br />' Oxygenates/Additives <br /> B T E X TPH-G <br /> MTBE Ethanol tert- DLPE ETRE TAME <br /> Butanol <br /> Detection 03 0 3 03 06 005 1 0 1 0 10 l 0 10 1 0 <br /> 1 emits µg/1 µg/l µg/1 µg/1 mg/1 µg/1 µg/l µg/1 n/l µg/1 µg/1 <br /> Analytical Method 602 602 602 602 5030/L.L1FT 8260 8260 8260 8260 8260 8260 <br /> Sample l U <br /> 1432-MW1-9/23199 ND ND ND ND ND ND ISD ND ND ND ND <br /> 1432-MW2-9/23/99 ND 1 6 ND ND 005 92,000 ND* ND* ND* ND* 520 <br /> 1432-MW3-9/23199 3 8 ND ND 14 ND 9,400 ND* 290 ND* ND* 33 <br /> 1432-MW4-9/23/99 10 ND ND 49 020 ND ND I ND L ND ND ND <br /> Unit Conversions Analytical <br /> µg/1 parts per billion(ppb) BTEX= benzene, toluene, ethyl benzene and xylene <br /> mg/l parts per million(ppm) T PH-Lr total petroleum hydrocarbons quantified as gasolmt <br /> MTBE -methyl tert-butyl ether <br /> tert Butanol -tertiary-butanol <br /> DIPS-di-csopropyI ether <br /> F FBI- - ethyl tertiary-butyl uthtr <br /> TAME ttrtiary-amyl methyl ether <br /> ND-not detected at or above the laboratory reported detection limit <br /> ND* =not detected at or above a raised laboratory reported detection limit See laboratory report <br /> sheets for detection limits <br /> 3 4 GROUNDWATER CONTOURS <br />' Groundwater elevation measurements collected at the site on September 23, 1999, indicate that the average depth <br /> to groundwater was approximately 6 5 feet below the monitor well and surface water station measuring points <br /> The groundwater elevations for the wells and the surface water elevations are shown in Figure 4, Appendix A <br /> Figure 4 shows the estimated groundwater elevation contours on September 23, 1999 The contours indicate a <br /> very steep groundwater gradient towards the island drainage channel <br /> I <br /> f <br />' t� CONDOR <br />