ARCHIVED REPORTS_SOIL AND GROUNDWATER INVESTIGATION REPORT 2006

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GMX-OWNW ' -- GMX-3 1 5 GMX-4 1 4. 5 10 GMX- 1 1 5 12 . 5 TPH-d NA TPH -d < 1 < 1 TPH-d 510 38000 7 . 7 TPHA 1 . 2 97000 18 GMX-21 1 5 `! TPH-mo NA TPH -mo <50 <50 TPH-mo 4400 110000 <50 TPH -mo <50 250000 52 TPH -d < 1 < 1 B (a) P eq . ND B (a) P eq . ND ND B(a) P eq . ND ND ND B(a) P eq . ND ND 0 . 008 TPH-mo <50 <50 GMX-8 1 5 B (a) P <67 B(a) P <0 . 067 <0. 067 B (a) P <3. 4 < 19 <0 . 005 B (a) P <0. 067 < 19 <0 . 005 B (a) P eq . ND ND TPHA 370 200 1 B (a) P <0 . 067 <0 . 067 TPH -mo 2500 970 B(a) P eq . ND ND B (a) P <6 . 7 <0. 13All TPH d 170 1 EXPLANATION t r .' � .{ _ _ _ _ _ _ _ _ _ _ _ _ `' . . TPH -mo 1200 < 50 - GMX- 1 GMX-20 1 5 - B (a) P eq . ND ND Boring location ( November 2003) ti` TPH-d 330 230 GMX- 1 GMX-21 B (a) P < 1 . 7 <0 . 067 TPH-mo 3300 2200 • Surface sample location B (a) P eq . ND ND h # ti� = ,a i P B (a) P <6 . 7 <6 . 7 GMX-8 GMX-OWNS ' -- I . _ . . - Property boundary ' GMX-2 • TPH-d 6700 :-mo 4 .; TPH 37000 � Sample location tf 1 5 B (a) P eq . ND 4 , • , ti15 1 . 2 GMX-20 ' B(a) P <20 4 • �# ':� GMX-2 1 5 �- ' ti 180 <50 GMX-4 F Y + * •y . If% •it � �. +, r .,} � *� , � TPH -d 170 Sample depth (feet) < 1 ND ND ' � TPH-mo 1200 < 50► Concentration (mg/kg) <0 . 05 <0. 005 ' ';+ , GMX-23 1 511 ;y .k ,3 B (a) P eq . ND ND GMX-23 ;, TPH-d < 1 < 1 u. B (a) P < 1 . 7 <0 . 067 ' V ` GMX-3 TPH-mo <50 <50 ` GMX- 13 � " t ¢. . GMX-6 1 5 10 B(a) P eq . ND ND , t . .� TPH-d 100 3100 < 1 I GMX-5 " B(a) p <0. 067 <0 . 067 ,$ .� � �. K� 11, •?� � Constituent I TPH -mo 640 16000 <50 o . ` 4 xy4r�+ 6 lr# �y „� , , •A *, '�' B (a) P eq . 0 . 12 1 . 9 ND GMX-6 TPH -d =Total petroleum hydrocarbons as diesel GMX-5 1 5 8 . 5 10 a. B (a) P 0. 11 1 . 7 <0. 005 ' � TPH-mo=Total petroleum hydrocarbons as motor oil I GMX-7 I TPH -d 5 . 2 56000 88000 1 . 5 TPH-mo 51 120000 230000 < 50 a B (a) P eq . = Benzo (a) pyrene equivalent GMX- 12 B (a) Peq , ND 3 . 7 ND ND � •i� B (a) P = Benzo (a) pyrene GMX- 12 1 5 B (a) P <0 . 067 <3. 9 < 19 <0 . 005 ND= Non-detect TPH-d 270 1 . 1 . 111. • _ - 144 a& was not detected at or above the i TPH-mo 2000 <50 GMX- 14 � ^ "� "' a •x `�' ' ' "; laboratory reporting limit indicated B (a) P eq . ND NDGMX-7 1 5 1r ~= ;'; •. S. ' ' °7 B (a) P <0 . 25 <0 . 005 g t'- { , :4 ^r GMX- 10 TPHA < 1 1100 Note : GMX-9 _ _ j TPH -mo <50 5800 ? '' *I ' ". GMX- 15 B(a) P eq . ND<0 . 067 3A GMX-14 1 5 B (a) P 1 . Surface soil sample which appeared to have � � ' ;• s� TPH-d 1 . 1 340 GMX- 19 contained a hydrocarbon like substance . E TPH-mo <50 <50 B(a) P eq . ND ND GMX- 16 �, 4 2 . Aerial photograph from 1999 . t B(a) P <0. 005 <0. 005 �'' GMX- 11 • ' az GMX-10h 1 5 .. TPHA < 1 < 1 TPH-mo <50 <50 o s I GMX- 19 1 5 B (a) P eq . ND ND ` TPH-d 1 . 2 < 1 B(a) P <0 . 005 <0 . 01 TPH -mo <50 <50 �+ B(a) P eq . ND ND GMX- 17 GMX- 18 I : , g E i j B (a) P <0 . 005 <0. 005 � . GMX- 11 1 5 11 1 o d ^'' TPH-d 6. 3 1 . 2 3 0000` !?� TPH-mo <50 <50 0 200 H �_ GMX- 15 1 5 1 B(a) P eq . ND ND TPH-d IIIIII1 . 6 140 B a P <0 . 005 <0 . 005 SCALE IN FEET 00 .: � TPH-mo <50 <50 - . . _ . . _ . . _ . _ . . _ . _ . . _ . . _ . r , . ;.,p , f.4t, : B(a) P eq . ND ND B(a) P <0 . 005 <00005 + GMXm,9 1 5 GMX- 18 1 5 TPH -d 17 < 1 DISTRIBUTION OF TPH AND B (a) P IN SOIL GMX- 17 1 5 GMX- 16 1 5 TPH-d 3. 3 < 1 TPH -mo 100 <50 NOVEMBER 2003 INVESTIGATION 00aTPH -d 390 54 TPHA 190 < 1 < r TPH -mo <50 < 50 TPH-mo 50 50 B (a) P <0 . 005 <0 . 01 ' I TAOC Tracy Gravel Pits TPH -mo <50 <50 B (a) P eq . ND NDra s Tracy , California B (a) P eq . ND ND B (a) P eq . ND ND B (a) P <0 . 005 <0. 005 ' B (a) P <0. 005 <0. 005 g (a) P <0 . 005 <0. 005 ` B -2006 Pro•ect No . 7066 . 001 . 1 W�g Pal -� 1 4 4 ( . . 4 = Geomatrix Figure 4