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r. <br /> LEGEND <br /> Existing site facllltieslfeatures <br /> f— `—I Previously existing site features/features; <br /> L— _J removed about 1955 unless otherwise noted. <br /> • Existing monitoring well <br /> MW-•4 <br /> Area in which gas plant residues <br /> (or their constituents) were detected in <br /> the fill and/or native soils beneath the <br /> CENTER STREET .` fill during 1968 investigation at <br /> concentrations of total PNA's greater than <br /> LAMPBLACK LAMPBLACK <br /> 200 mg/kg (Ppm) ` <br /> STORAGE SEPERATOR <br /> MW-3 ! <br /> i <br /> ���� PREVIOUS <br /> �? RTY <br /> TA.H I <br /> PIT:71-::, r -1 PROPERTY BOUNDARY <br /> FUEL TANK 2 <br /> f CT OIL TANK EXCAVATION <br /> -'.�:TAR SUMP:.- :::.-.:::•:-:-:-:• .`�.-.•. -.-:.•1� <br /> GAS/OIL SUMP <br /> LU `J J OIL:: :-::- : '. ':=:: <br /> PURIFIERS jj''` <br /> � >r1 � STORAGE: ":•:-:=•":•: •:::.-:. :_-:_�::.-.:=:a:.;•.� <br /> STORAGE\/ tr� •`:TANK::�J = :::=:_ OIL TANK <br /> Cf) TA <br /> �.J �'J.::-:-:-:-: -:.:.:.-::: -::-:':. <br /> = MW-2 �' -� :'• ::`:. GAS HOLDER <br /> 1 U : : ' Removed between -D <br /> and 1930) Z <br /> L LI <br /> LAN[PBLACK PIT f <br /> \ / I GAS HOLDER 1 I I 1� <br /> GAS HOLDER LAMPBLACK N <br /> SEPERATOR <br /> � Q <br /> � l <br /> / MW-1 - l <br /> FUEL TANKS 1 & 3 MW-1D <br /> EXCAVATION <br /> 1 <br /> COMMERCE STREET <br /> SOURCES: (Former facility locations) <br /> Sanborn Maps dated 1917, 1946, and 1950. <br /> PG&E, 1930 Contour Map,Stockton Gas Plant,Drwg.No.480766: <br /> Stockton Assessor's Map 137,Pages 31-32. <br /> FIGURE 3-3 <br /> r EXTENT OF <br /> GAS PLANT RESIDUES <br /> BASED ON PREVIOUS INVESTIGATIONS <br /> 0 30 60 <br /> STOCKTON MGP SITE <br /> SCALE IN FEET <br /> CFfdblHlLL <br /> SAG31O14.WP <br /> 1 <br />