Laserfiche WebLink
ala <br /> T r <br /> ri �,,•I�Iri a:. rt. t. �. r m� h 11 I, r *. '�.. <br /> ,� r r � r vI ?1 r. ! .. 1s { vi �4i. •l I. i r. <br /> ,� I ,10 Dec&i!ber 2003, I .r <br /> r <br /> s AGE NC Project No.�98 0504 ','' <br /> ;Page 4 of.5 J, r. , { _ 44 <br /> ;Department;of Health Services-ce' ifie8 Laboratory jn.Paramount, California. Each sample was. <br /> analyzed for: <br /> Total'petroleum hydrocarbons''quantified as-'gasoline (TPH-g),in accordance with EPA , <br /> -Method 80,15'Modified; <br /> • •Benzene;foluene,:ethylbenzene and'total xylenes(BTEX)in'accordance with EPA Mcthod i <br /> 8260B;,-and Fuel additive compounds;'including di-isopropyl ether (DIPE), ethyl-tertiary . <br /> butyl ether(ETBE),rnethyl=tertiary-butyl ether(MTBE),tertiary-amyl methyl ether,(TAME); <br /> and t=butyl, alcohol,(TBA), 1,2=dichloroethane (1,2=DCA), ,1',2-dibromaethane (EDB), <br /> ethanol and methanol in accordance with EPA Method.8260B. <br /> 4.0. FINDINGS <br /> Ground water elevation;flow direction,and'gradient were determined from field data collected on10 <br /> ' December 2003;,the contaminant,impact ground water was quantified by-the laboratory analytical. <br /> data. <br /> 4.2. GROUND WATER ELEVATION AND FLOW DIRECTION <br /> Depth toground water at the site ranged from 28.21 feet to 28.60.feet below the riionitoring wells <br /> 5 <br /> ca 'ing,tops: The ground water.elevations of the site ganged from' 19.23 feet (MW3) to 2'1.17,feet <br /> ' below'mean sea.level (msl)` (MW2); in the shallow ground water.wells.:Ground water'data is '{ <br /> included on Table 1. The ground water flaw direction was calculated from the well elevation data: <br /> The groundwater was inferred to flow southwest ata gradient of 0.01 ft/ft. Figure 3 illustrates the <br /> contoured' ground water'elevations as "measured on'l0 December 2003. <br /> `4.3: GROUND,WATER-ANALYTICAL RESULTS <br /> MTBE detected was in water,sample MW-1 at a concentration of 80 Ag1h <br /> No additional petroleum hydrocarbon compounds were detected in the samples analyzed.Analytical <br /> results from,ground water samples are summarized in Table 2. The laboratory-reports (CTEL ID. <br /> CT214-0304048),quality assurance and quality control(QA/QC)'reports and chain-of-custody forms; <br /> 'are-included in Appendix'D. <br /> Advanced GeoEnvironmental,Inc ", <br />