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B <br /> West <br /> B' <br /> Ea st <br /> 100 +3�5 IN <br /> 3� 3 <br /> �Qt°'S <br /> . 1k� A � <br /> GMX-3 1 GMX-27 1.5 GMX 23 1 ? <br /> TPH-d <1.0 ,' TPH-d 44 <br /> TPH-d <1.D <br /> 90 TPH-mo <50 ? TPH-mo 570 <br /> .;'r <br /> GMX-32 1 B(a)P eq, NO ,; `�'' B(a)P eq. 0.18 �' z`•�' TPH-mo <50 <br /> 8aP ? <br /> B a P <0.067 B a P 0.14 ^tip; Oeq O.D67 <br /> ? GMX-13 1 TPH-d 860 ,- ' B(a)P <br /> < <br /> ( ? ? TPH-mo 6700 <br /> TPH-d 15 GMX-3 g GMX-27 5 <br /> GMX-23 5 <br /> :�. TPH-ma 180 GMX-32 5 B a P e 0.52 TPH-d <1.D GMX-5 1 1.0 <br /> ( ) q• TPH-d 370 <br /> ~ TPH-d < <br /> TPH-d 5.2 f TPH mo 1900 TPH-mo <50 '? <br /> B(a)P eq, NO TPH-d <1.0 TPH-mo <gp 4;,,; B(a)P eq. 0.28 � B a F e <br /> ,� B a P < .05 TPH-mo <50 B(a)P eq. NO TPH-m0 51 ,'� .Y ( ) q. NO <br /> + `� B(a)P eq. ND B a P Q.22 I B a P <4.D67 <br /> SO B(a)P eq. ND GMX 32 10.5 B a P <0.067 <br /> '`�� GMX-13 5 1 <br /> B a P <0. 053 f TPH-d <1,4 B a P <0,067 GMX-27 10.5 � : <br /> TPH-d 1.2 %4-14 GMX-5 5 <br /> r,• TPM-mo <54 TPH-d 5.1 <br /> s. TPH-mo a50 TPH-d 56000 TPH-mo <50 <br /> ? B(a)P eq. NO ,. B(a)P eq. NO <br /> PILE P <0.045 <br /> B a P <0.0056 TPH-mo 120000 a B(a)P eq. 0.0049 <br /> B(a)P eq. 3.7 B a P <0.0055 ? <br /> 70 B a P <3.9 tl . GMX-27 11.5 -- y- <br /> ? ? 7 GMX-5 8.5 <br /> a TPH-d 44000 EXPLANATION <br /> Z TPH-d 88000 ;. TPH-mo 64000 ? <br /> H ? TPH-mo 230000 B(a)P eq. 3.71 Sample location ® Area of observed black material <br /> B(a)P eq. NO B a P <3.6 GMX-27 1 1.5 Sample depth (feet below <br /> w GMx 27 16.5 ground surface) ® 9 p <br /> � B a P <19 TPH-d 44 Grab groundwater sample <br /> TPM-mo 570 <br /> w �� 1D <br /> TPM-d 3.3 B(a)P eq. 0.18 ~ Concentration in milligrams S011 Sample <br /> ? TPH d TFH-mo <50 1.5 B a P 0.14 per kilogram (mg/kg) <br /> TPH-mo <50 ;��; B(a)P e q. ND <br /> VBaP .o ss CSilt/clay: Primarily f <br /> ne-grained units including U.S.C.S,eq. NO Constituent <br /> ? B(a)P <0.005 v <br /> classes CL(lean clay)and ML (silt) <br /> 'f °? TPH-d =Total petroleum hydrocarbons as diesel Gravel: Primarily coarse-grained units including <br /> 50 <br /> TPH-mo =Total petroleum hydrocarbons as motor oil U.S.C.S. classes GP(poorly graded gravel), GP-GM <br /> .? M. B(a)P eq. = Benzo(a)pyrene equivalent (poorly graded gravel with slit), GP-GC (poorly graded <br /> B(a)P= Benzo(a)pyrene gravel with clay), GM (silty gravel), and GC (poorly <br /> graded gravel) <br /> NA= Not adnalyzed <br /> < =Analyte was not detected at or above the laboratory RSand: Primarily coarse-grained units including U.S.C.S. <br /> reporting limit indicated classes SP (poorly graded sand), SP-SM (poorly <br /> � <br /> M <br /> M 40 <br /> 44 = (Bold)Analyte was detected at the concentration graded sand with silt), 5P-SC (poorly graded sand with <br /> ? indicated clay), SM (silty sand), and SC (clayey sand) <br /> U.S.C.S = Unified Soil Classification SystemObserved first water <br /> xl <br /> `) ? - <br /> o <br /> Notes: <br /> 100 <br /> QD <br /> 30 1. Elevations of projected borings may not match cross section topography. <br /> 2. Borings GMX-1 through GMX-23 advanced November 17-18, 2003 by CROSS SECTION B-B' <br /> 0 0 40 80 Geomatrix. <br /> TAOC Tracy Gravel Pits <br /> 3. Borings GMX-24 through GMX-35 advanced August 22-25 2005 b <br /> g Y Valpico Road <br /> Horizontal Scale (feet) Geomatrix. Tracy, California <br /> Q Vertical Exaggeration =4X 4• Borings B-1 through B-10 advanced July 1989 by Klienfelder. <br /> 5. Potholes P-1 through P-35 advanced September 1990 by Pacific By: Bate Project No. 7066.001,1 <br /> Environmental. �eomatriX Figure 8B <br />