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TRY-1 16-20 <br /> TPHd 23500 J <br /> TPHd w/ SG 280 J <br /> BTEX ND <br /> TEQ NDC <br /> NE <br /> 0 150 <br /> Feet <br /> AOI -5 0U2-A015-S1 20 <br /> TPHd 200 <br /> BTEX ND <br /> 0U2 -`A015 -S4r1 TEQ NA <br /> TRY-1 ; ; <br /> ♦ <br /> 001 All <br /> ♦♦ i 46 <br /> OU -2 j <br /> / AOI <br /> TRY-2 15-20 TRY-2 0U2-A014-S1 1 20' <br /> TPHd 610 <br /> TPHd 690 J BTEX ND <br /> TPHd w/ SG < 100 <br /> BTEX ND TRY-3 OU2-A014-S1 _ TEQ NA <br /> TEQ NDC TRY-38 <br /> 0 � . . <br /> • � . . � : : 1Qi <br /> : : ` • � <br /> 1 TRY-11 ; a TRY-3 TRY-3B <br /> I <br /> 23-25 28-30 33-38 43-48 <br /> TPHd 79 J 280 J < 100 < 100 <br /> C3 TPHd w/ SG < 100 220 J NA NA <br /> C\1 BTEX ND ND ND ND <br /> C3 EXPLANATION TEQ NDC 0. 0097 NDC NDC <br /> C <br /> ai <br /> Tracy Rail Yard Operable unit (OU ) <br /> o Tracy Rail Yard Area of interest (AOI ) <br /> Mo <br /> E OU2-A015-S1 t1J Previous soil and groundwater <br /> 3 sample location <br /> Notes: <br /> �� TRY Previous soil sample location 1 . TPHd = total petroleum hydrocarbons quantified as diesel ; <br /> TRY-7B ♦ Previous groundwater sample location w/SG = with silica gel. <br /> 0 2. BTEX = benzene, toluene, ethylbenzene, and xylenes . <br /> of Petroleum hydrocarbons detected 3. TEQ = benzo(a )pyrene toxicity equivalent, <br /> i in groundwater > 100 pg/L 4. ND = not detected above laboratory reporting limits. <br /> 3 5. NDC = no carcinogenic PAI-Is were detected . <br /> � I Petroleum hydrocarbon affected soil 6 . NA = not analyzed . <br /> noted in boring (AMEC) <br /> 0 7. < = not detected above the laboratory reporting limit shown . <br /> Former Tidewater Associated 8. J = target analyte was positively identified , numerical value <br /> Oil Company (TAOC) pipeline is approximate; <br /> 9. pg/L = micrograms per liter. <br /> U) Former Old Valley Pipeline ( OVP ) <br /> C) Groundwater flow direction PETROLEUM HYDROCARBON <br /> Sample ID GROUNDWATER ANALYTICAL DATA Sample depth interval in feet TRACY RAIL YARD A0I4 AND AOI -5 <br /> TRY-2 15-20 below ground surface (bgs) <br /> 0 TPHd 690 J Tracy Rail Yard Off Site East Area <br /> ° Trac California <br /> TPHd w/ SG < 100 <br /> Cn <br /> y' <br /> w BTEX ND By: MMG Date : 6/2/2011 jProject No. OD11161130 <br /> CL TEQ NDConcentration of constituent in NgIL <br /> Constituents AMEC Geomatrix Figure 4 <br /> LL <br />