ARCHIVED REPORTS XR0013118 - Laserfiche WebLink

Home Browse Search

TABLE 1 Soil-Cumulative Analyses Chevron-Historical Pipeline Portfolio Pombo Property-1755 West 11th Street. Tracy,California Concentrations in milligrams per kilogram(mg/kg Depth. Boring or Test Interval Ethyl- Pit 1D Date (feet bgs) TPI-Ig TPHd TPHc Benzene Toluene benzene Xylenes PAHs'. Other PAHs ND SB-6-S-83 11/5/2003 8 NA NA <4.0 <0.005 <0.005 <0.005 <0.02 ND SB-7-S-73 2/25/2004 7 NA NA, <4,0 <0.005 <0.005 <0.005 <0.02 Phn 0.0006 Pyr 0.0005 ..Other PAHs ND SB-8-S-73 2/25/2004 7 NA NA <4.0 <0.005 <0.005 <0.005 <0.02 Phn 0.001 Pyr 0.002 Other PAHs _ND SB-9-S-63 2/25/2004 6 NA NA <4.0 <0.005 <0.005 <0.005 <0.02 ND SB-10-S-73 2/25/2004 7 NA NA <4.0 <0.005 <0.005 . <0.005 <0.02 Phn 0.002 . - Pyr 0.003 Other PAHs ND SB-11-S-113 2/25/2004 11 NA NA <4.0 <0.005 <0.005 <0.005 <0.02 Phn 0.001 Pyr 0.002 Other PAHs ND Abbreviations: <=Analyte not detected above the laboratory reporting limit shown bgs=below ground surface NA=Not analyzed ND=Not detected - PAHs=Polynuclear aromatic hydrocarbons - TPHc=Total petroleum hydrocarbons quantified as crude oil(CWC36)- _ - `�✓• TPI-Id=Total petroleum hydrocarbons quantified as diesel(C,o-C,4) TPHg=Total petroleum hydrocarbons quantified as gasoline(Cs CMZ) Notes: Detected concentrations are noted in hold face type. 1. Samples were collected by Earth Systems Consultants and analyzed by Chromalab,Inc.for for total extractable petroleum hydrocarbons quantified as diesel,motor oil,and crude oil by EPA Method 8015modified and BTEX by EPA Method 8020;and by Friedman and Bruya,Inc.for PAHs by EPA Method 8270 SIM.No TPH quantified as motor oil was detected, _ 2. Samples were collected by Geomatrix Consultants,Inc.(except where noted)and analyzed by Freidman and Bruya,Inc.for TPHg - TPHd,and TPHc by EPA Method 8015 modified;for benzene,toluene,ethylbenzene,and total xylenes(BTEX)by EPA Method 802613; and for PAHs by EPA Method 8270C SIM. 3. Samples were collected by SAIC and analyzed by Lancaster Laboratories,Inc.for TPHc using EPA Method 8015 modified,. and benzene,toluene,ethylbenzene and total xylenes using EPA Method 8260B;and for PAHs by EPA Method 82700 with . selective ion monitoring(SIM). - 4. Only Detected PAHs are shown:Acn Acenaphthene,B(a)A=Benzo(a)anthracene,B(b)F=Benzo(b)fiuoranthene,- B(gh,i)P=Benzo(g,h,i)Perylene,Chr=Chrysene,Flt=Fluoranthene,Fit=Fluorene,Nph=Naphthalene,Phn=Phenanthrene, and Pyr=Pyrene Sources: Geomatrix,2000. Report of Additional Soil and Groundwater Investigation,Pombo Property,Tracy,California,December. SAIC,2005. Soil and Groundwater Investigation Report,Pombo Property,Tracy,California,January.