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ABBREVIATIONS <br /> TPHg=Total pelroeum hydrocarbons <br /> quanlitied as gasollne analyzed using EPA <br /> Method 8015M <br /> BTEX=Benzene,Toluene,Elhylbenzene, <br /> and Total Xylenes analyzed using EPA <br /> Method 8021E <br /> TPHd=Total Petroleum Hydrocarbons <br /> quanlified as diesel analyzed using EPA <br /> Method 8015M <br /> TPHD sg=TPHd analyzed using EPA <br /> Method 8015M following a silica gel <br /> preparation procedure <br /> PAHs=Polycyclic Aromatic Hydrocarbons <br /> analyzed using EPA Method 8270 SIMS <br /> Naph=Naphthalene <br /> Acen=Acenaphthalens <br /> Fluor=Fluorene <br /> MW-3 Phen=Phenanthrene <br /> TPHg <50 MW-2 NM=No measurement due to presence al <br /> separate phase petroleum(approx-3 <br /> BTEX a0.5 TPHg <50 inches)in the well. <br /> TPHd <50 BTEX a0.5 Groundwater analytical results in Ng4- <br /> TPHD sg c50 TPHd 97 <br /> PAHs <0.1 TPHD sg ¢50 <br /> PAHs a0.1 <br /> SB-14 <br /> MW-3 0 <br /> 70.31 t MW-2 <br /> t 69-80 <br /> OS$-10 <br /> Q SIB- <br /> All MW-1 56-13 <br /> �1 NM ■ TPHg <5fl 0 50 feet <br /> Estimated ■ ss-13 BEX a0.5 <br /> Groundwater Se-12 T <br /> flow 1 $ <br /> s9.a TPHd 540 <br /> MW 4 7a.2 70.0 TPHD sg 77 <br /> TPHg a50 Naph 0.3 <br /> BTEX <0.5 Acen 0.1 <br /> TPHd a50 Fluor 0.5 <br /> TPHD sg ¢50 Phen 0.5 <br /> PAHs ¢0.1 MW-4 <br /> 70-13 EXPLANATION <br /> SS-g ■) Soil baring location[May 2002] <br /> se-180 Soil and grab groundwater sampling location <br /> (May 2002) <br /> Approximate location of soil boring advanced <br /> by Geological Technics Inc., 1995 <br /> Approximate location of soil boring advanced <br /> by Radian International LLC, 1998 <br /> Mw-2 Approximate location of monitoring wells <br /> 159.80 installed by Radian International LLC, 1998; <br /> with water level elevation(May 21,2002) <br /> Estmated extent of residual petroleum based <br /> on analytical data(TPHd or TPHmo> 100 <br /> 4 mg/kg)or visual observations. <br /> 702 Line of equal elevation of potentiometric <br /> a, surface,co n tou r i n to rval is 0.2 feet <br /> Y <br /> m <br /> 0 <br /> GROUNDWATER ANALYTICAL RESULTS AND POTENTIOMETRiC SURFACE Project No. <br /> May 2002 5011 <br /> Roberts Property <br /> (Former Vernalis Pump Station) <br /> GE©MATRIX 35500 Welty Road Figure <br /> rr <br /> Vernalis,California 3 <br />