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ameO <br /> TABLE A-3 <br /> SUMMARY OF GROUNDWATER SAMPLE ANALYTICAL RESULTS ' <br /> TRACY RAIL YARD - AOI -4 and AOI -5 <br /> Tracy Rail Yard Off Site East Area <br /> Tracy, California <br /> Results reported in micrograms per liter /L <br /> TPH VOCs PAHs <br /> Groundwater <br /> Sample Benzo Dibenz <br /> depth TPHd Ethyl- Acen- Acen- Benzo(a) Benzo( b) (g, h , i ) Benzo( k) (a , h) Indeno Naph- Phen- <br /> Boring Sample interval w/Silica Benz- benz- Tolu- Xylene Other aphth- aphthy- Anthra- anthra- Benzo(a) fluoran- peryl - fluoran- Chrys- anthra- Fluoran- Fluor- (1 , 2 , 3-cd ) that- anthr- BaP <br /> ID Date feet bps ) TPHd Gel TPHmo ene ene ene (Total ) VOCs ene lene cene cene pyrene thene ene thene ene cene thene ene pyrene ene ene Pyrene TEQ 2 <br /> AOI <br /> OU2-AOI4-S1 12/14/2005 20 610 -- < 500 <0. 5 <0 . 5 <0. 5 < 1 . 0 NID -- -- -- -- -- -- - -- -- -- -- - -- -- -- - <br /> TRY-2 08/14/2009 15-20 690 J < 100 -- <0 . 5 < 1 . 0 < 1 . 0 < 1 . 0 -- <0 . 030 <0 . 020 <0. 030 < 0 . 030 <0. 030 <0 . 030 <0. 040 < 0 . 030 <0. 020 <0 . 030 <0. 030 <0 . 030 < 0 . 040 < 0 . 050 <0. 030 <0. 030 NDC <br /> TRY-3 08/17/2009 23-25 79 J < 100 -- < 0 . 5 < 1 . 0 < 1 . 0 < 1 . 0 -- <0 . 010 <0. 010 < 0. 010 <0 . 010 < 0. 009 <0. 010 <0 . 012 < 0 . 010 <0. 010 <0. 009 0. 012 < 0 . 010 < 0 . 012 < 0 . 050 <0. 010 0. 079 NDC <br /> 28-30 280 J 220 J -- <0 . 1 R < 1 . 0 R < 1 . 0 R < 1 . 0 R -- 0 . 010 0. 017 0. 031 <0 . 010 0.0064 J <0. 010 <0. 012 < 0 . 010 0.024 0. 0032 J 0.083 0.022 <0 . 012 <0 . 050 0. 087 J 0. 15 0 . 0097 <br /> TRY-36 03/09/2010 33-38 < 100 -- -- <0. 5 < 1 . 0 < 1 . 0 < 1 . 0 -- <0 . 010 <0. 010 <0 . 010 <0 . 010 <0 . 009 <0. 010 <0. 012 <0 . 010 <0. 010 <0. 009 <0 . 010 <0 . 010 <0 . 012 <0 . 050 <0. 010 <0. 010 NDC <br /> 43-48 < 100 -- -- <0. 5 < 1 . 0 I < 1 . 0 < 1 . 0 -- <0 . 010 1 <0. 010 <0 . 010 I <0. 010 1 <0 . 009 <0. 010 1 <0. 012 <0 . 010 <0 . 010 <0 . 009 <0 . 010 0. 012 J < 0 . 012 < 0 . 050 0. 015 J <0. 010 INDC <br /> AOI -5 <br /> OU2-AO15-S1 12/13/2005 20 200 -- <500 < 1 . 0 < 1 . 0 < 1 . 0 <2 . 0 ND - - -- -- -- -- - -- -- -- - <br /> TRY- 1 8/14/2009 and 8/18/09 1 16-20 12 , 500JI 280J I -- 1 < 0 . 5 1 < 1 . 0 I < 1 . 0 I < 1 . 0 1 1 <0 . 030 1 <0. 020 1 0. 069 1 <0. 030 1 <0. 030 1 <0. 030 1 <0. 040 1 <0. 030 <0 . 020 1 <0. 030 1 0.030 1 <0 . 030 1 <0 . 040 1 0 .056 100091 J 1 <0 . 030 U NDC <br /> Notes <br /> 1 . Analytical results for the 2005 samples were compiled from tables presented in previous consultants' reports. AMEC Geomatrix did not independently review laboratory data sheets. Samples collected by AMEC Geomatrix, Inc. , and analyzed by Lancaster Laboratories, Inc. , of Lancaster, Pennsylvania, <br /> for TPHd and TPHmo using U . S. Environmental Protection Agency ( U . S. EPA) Method 8015; for benzene, toluene, ethylbenzene, and xylenes (BTEX) using U. S. EPA Method 82608 ; and for PAHs using U . S. EPA Method 8270 with selective ion monitoring (SIM). Detected analytes are shown in bold face-type. <br /> 2. BaP TEQs were calculated for each sample that had at least one carcinogenic PAH detection above the laboratory reporting limit. All results for non-detected carcinogenic PAHs were set at half of the detection limit. The equivalent is <br /> calculated using toxicity equivalency factors, adjusting the toxicity of the carcinogenic PAHs to the TEQ of benzo(a) pyrene. <br /> Abbreviations <br /> -- = not analyzed <br /> < = analyte was not detected at or above the laboratory reporting limit indicated <br /> AOI = area of interest <br /> BaP TEQ = benzo (a)pyrene toxicity equivalent <br /> bgs = below ground surface <br /> J = target analyte was positively identified ; the associated numerical value is the approximate concentration of analyte in the sample <br /> NDC = no carcinogenic PAHs were detected , therefore a BaP TEQ was not calculated <br /> ND = not detected <br /> PAHs = polynuclear aromatic hydrocarbons <br /> R = data rejected due to quality assurance/quality control issues <br /> TPH = total petroleum hydrocarbons <br /> TPHd = total petroleum hydrocarbons quantified as diesel <br /> TPHmo = total petroleum hydrocarbons quantified as motor oil <br /> VOCs = volatile organic compounds <br /> AMEC Geomatrix, Inc. <br /> X:\16000s\161130\4000\O(tSileEastWP_061511 \3 App A\TbIA-3_GW.xlsx Page 1 of 1 <br />