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BB' <br /> .� Northwest Southeast <br /> I <br /> 0 50 100 150 200 <br /> Tank excavation <br /> C b, 0A <br /> 10 _ ' - ' CL <br /> CL HA-7 <br /> Grab Groundwater <br /> 3,500 - ----- -------- <br /> HA-1 4100 SM � _ TPHd <50 <br /> Grab Groundwater TPHg <50 <br /> 20 TPHd <50 1,1� 270 Grab Gro ndwater <br /> TPHg <50 /fi,SOSP 14 000 IL TPHd 7, 00 <br /> MW-2 TPHg < 0 <br /> 1;500 <br /> Groundwater SM 330 <br /> ' TPHd 310,0001240,000 <br /> 30 TPHg <50 12 MW-3 <br /> SP 1 $00 BTEX <0 5 ? Groundwat- <br /> MW-4 TPHd 2300/2400 <br /> i�>! <br /> Groundwater TPHg <50 <br /> TPHd 6900/5300 BEX <0 5 <br /> TPHg <50 T 13 <br /> 40 BTEX <0 5 <br /> 1 <br /> 5D <br /> ' EXPLANATION <br /> Well screen interval <br /> Notes Approximate interval of soil sample collected and analyzed <br /> 1 The extent of petroleum affected soil is based on both visual from soil boring Detected concentrations of TPHd in sod <br /> ' observation of the sod as described on the boring logs and on samples(m mg/kg)are shown <br /> analytical results of the sod samples Location of cross section SZ-_ Groundwater level <br /> is shown on Figure 3 =/�I <br /> 0 2 The geologic units have been inferred and are not meant to �/1/� Soil staining reportedly observed and/or TPH > 100 mg/kg <br /> ' imply certainity Units are based on htholigic logs from borings 0 Fine grained soils (ML/CL) <br /> drilled by others and Geomatrix makes no representation as <br /> to their accuracy <br /> 0 Coarse grained soils (SP/SM/SC) <br /> 3 Groundwater analytical results in micrograms per literGEOLOGIC CROSS SECTION 13-13'Samples collected August 30 2004 0 UST excavation backfill (approximate) <br /> 1805 Harbor St <br /> 4 (?)=No TPH detected in the 15 foot bgs sod sample from TPHd -Total petroleum hydrocarbons quantified as diesel (without silica gellwith silica gel) Stockton, California <br /> MW-4 or the 20 foot bgs soil sample from HA-2 Extent of TPHg-Total petroleum hydrocarbons quantified as gasoline <br /> affected soil based on detection of TPHd in water samples <br /> BTEX-Benzene, toluene, eth (benzene, and x /eine Protect No Figure <br /> and discoloration of sod noted on soil boring log Y Y <br /> GEOMATRIX <br /> 9963 000 5 <br />