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Excavation Area EXPLANATION <br /> 43'x 14'x 25'deep WEST FREMONT STREET +• <br /> CSB-2 TPHg TPHtl B T E X � <br /> ` CSB-1 } Approximate location of boring by <br /> cPT Exc-Br TPHg TPHtl B r E x r rte_ _ 1; Treadwell&Rollo,Inc.,January 2004 <br /> 24.5 790 300 ND ND 14 11 <br /> 25 11 tt ND0.0510.12 .062 ��•'�� C26 TPHg 1.2 B T E % <br /> 37�' 36.5 4 00 520 ND ND 4 150 26 ND 1.2 No Approximate location of boring by Advanced <br /> -Jr 7 yam/J' 36.5 470 18 Not No 4.3 3.9 35 N 1.3 ND <br /> �S J GeoEnvironmental,Inc.,June and July 2003 <br /> _ - TP-C ® Approximate of test pit location and number <br /> 411 <br /> CSB-3 by Treadwell&Rollo,Inc.,2004 <br /> TP-A ® Test pit location removed during excavation <br /> CPT-EXC-N15 OO Approximate location of confirmation sample <br /> by Treadwell&Rollo,Inc.,2004 <br /> crr occ-2s TPHg TPHg B r E x CPT-EXC-25 p Approximate location of confirmation sample <br /> z3lj�pcavation Area - 2s 1 ND 1 12 1 No by Treadwell&Rollo,Inc.,April 2005 <br /> 251 x 10'x 25'deep C + + <br /> �3+ + •� PT- - June 2004,25 foot deep shored excavation <br /> cse•s TPHg TPHd B T E X + + + +�+ +, �+ ++ Approximate Location of <br /> © <br /> + Former Gas Station + <br /> 27.5 2.2 1.5 No + + -- Pump Island Excavation <br /> 30.5 19 1 - ND _ + Pump Islands <br /> CPT-EXCTWS + + +`++ + t+ + + +• I Former Underground Storage Tank <br /> +++++ ++ ++++�++++++++ removed 28 April 2004 <br /> ++++ ++ + `++ I <br /> + ++ +++ ++ ++I + + + + I © April 2005,25 foot deep shored excavation <br /> +,t--+ + <br /> n L_ + +i-++ _.Ft+jf+++++++++ <br /> + + + +++ + ++ + _____J ® Area used for calculating TPH <br /> cPr-Exc we TPHg TPHtl B r E x + ++++ +*++ ++ + t; mass remaining in soil <br /> 9 ND ++++ ++ + <br /> ++ +++++++ ++++ ++ + <br /> CPT- C-S10 +++ Notes: TPHg -total petroleum hydrocarbons quantified as gasoline <br /> TPHd -total petroleum hydrocarbons quantified as diesel <br /> CPT-E C-BT12 Boring No. Analyte <br /> Pump Island Excavation j Depth value B benzene <br /> CSB-4 25'x 22'x 10'deep W a7! nl mg kg) T toluene <br /> benzene <br /> X xylenes <br /> E CSB4 TPHg TPHd B T E X CPT-EXCS10 TPHg TPHd B T E X ND -not detected <br /> t0a0.5 ND 10 ND - -not analyzed <br /> i <br /> CPT-EXC-BT12 TPHg TPHtl B T E % �J9Z yes <br /> 12 No j! Notes: <br /> 1. Only concentrations shown for <br /> samples remaining in-place. <br /> 'g ________________________________________ 2. All concentrations in milligrams per <br /> kilogram(mg/kg). <br /> I <br /> _ I I Reference:Basemap from Siegfried Engineering,Inc.,1999. <br /> B-2 TPHgTPHtl 8 11 E X <br /> 10 ND - ND 420 N.MADISON STREET <br /> o Stockton,California <br /> Former Service Station Building <br /> o B_ I I TOTAL PETROLEUM HYROCARBON CONCENTRATIONS <br /> REMAINING IN SOIL <br /> j 0 10 Feet Date 05//224//113FProject No. 731589001 Figure 6 <br /> ■,`Qd <br /> rn L_______________________________________J <br /> Approximate scale <br /> A LANUAN COMPANY <br />