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VEHICLE <br />INSPECTION <br />RACK— <br />I Z L- T <br />N <br />Analyte Concentration <br />TPHD <br />6.3 <br />Benzene <br />0.12 <br />Toluene <br />0.37 <br />Ethylbenzene <br />1.1 <br />Xylenes <br />5 <br />Lead <br />8 <br />LEGEND: <br />PREVIOUS BOREHOLE LOCATION <br />100 MG/KG CONCENTRATION CONTOUR <br />FOR TPHD (TRI -REGIONAL BOARD GUIDELINE) <br />UNPAVED AREA <br />■ STORM DRAIN INLET <br />SANITARY SEWER LINE <br />HAZARDOUS MATERIAL <br />STORAGE SHED <br />BOLD EXCEEDS COMPARISON CRITERIA <br />FT BGS FEET BELOW GROUND SURFACE <br />NATL GUARD\ 20010502 \ 010502_STOCKTON-SOIL35FT.DGN VRL <br />N <br />0 125 <br />Scale in Feet <br />CONCRETE <br />WASH PAD TO Analyte Concentration <br />HOLDING TANK TPHG 0.72 <br />Benzene 0.035 <br />OWS INLET Toluene 0.019 <br />—� Ethy(benzene 0.0063 <br />Xylenes 0.0197 <br />FORMER GASOLINE UST <br />FORMER <br />DIESEL <br />B32 <br />UST <br />/ <br />• ►` • B30 <br />MP ISLAND <br />� • B31 <br />i <br />i <br />MG/KG MILLIGRAMS PER KILOGRAM <br />FMS FIELD MAINTENANCE SHOP <br />OWS OIL/WATER SEPARATOR <br />PRG PRELIMINARY REMEDIATION GOAL <br />TPHD TOTAL PETROLEUM HYDROCARBONS <br />AS DIESEL <br />TPHG TOTAL PETROLEUM HYDROCARBONS <br />AS GASOLINE <br />UST UNDERGROUND STORAGE TANK <br />NOTE <br />CONCENTRATIONS SHOWN ARE MG/KG. <br />ONLY ANALYTES THAT HAVE BEEN DETECTED <br />ARE SHOWN. ANALYTES NOT SHOWN WERE <br />NON -DETECT. <br />Figure 3-3. Soil Sample Analytical Concentrations <br />and Contours at 35 FT BGS (Versar) <br />Analyte Concentration <br />TPHD <br />260 <br />Toluene <br />3.4 <br />Ethylbenzene <br />18 <br />Xylenes <br />Lead <br />50.4 <br />3.5 <br />LEGEND: <br />PREVIOUS BOREHOLE LOCATION <br />100 MG/KG CONCENTRATION CONTOUR <br />FOR TPHD (TRI -REGIONAL BOARD GUIDELINE) <br />UNPAVED AREA <br />■ STORM DRAIN INLET <br />SANITARY SEWER LINE <br />HAZARDOUS MATERIAL <br />STORAGE SHED <br />BOLD EXCEEDS COMPARISON CRITERIA <br />FT BGS FEET BELOW GROUND SURFACE <br />NATL GUARD\ 20010502 \ 010502_STOCKTON-SOIL35FT.DGN VRL <br />N <br />0 125 <br />Scale in Feet <br />CONCRETE <br />WASH PAD TO Analyte Concentration <br />HOLDING TANK TPHG 0.72 <br />Benzene 0.035 <br />OWS INLET Toluene 0.019 <br />—� Ethy(benzene 0.0063 <br />Xylenes 0.0197 <br />FORMER GASOLINE UST <br />FORMER <br />DIESEL <br />B32 <br />UST <br />/ <br />• ►` • B30 <br />MP ISLAND <br />� • B31 <br />i <br />i <br />MG/KG MILLIGRAMS PER KILOGRAM <br />FMS FIELD MAINTENANCE SHOP <br />OWS OIL/WATER SEPARATOR <br />PRG PRELIMINARY REMEDIATION GOAL <br />TPHD TOTAL PETROLEUM HYDROCARBONS <br />AS DIESEL <br />TPHG TOTAL PETROLEUM HYDROCARBONS <br />AS GASOLINE <br />UST UNDERGROUND STORAGE TANK <br />NOTE <br />CONCENTRATIONS SHOWN ARE MG/KG. <br />ONLY ANALYTES THAT HAVE BEEN DETECTED <br />ARE SHOWN. ANALYTES NOT SHOWN WERE <br />NON -DETECT. <br />Figure 3-3. Soil Sample Analytical Concentrations <br />and Contours at 35 FT BGS (Versar) <br />