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Table 1 HISTORIC SOIL ANALYTICAL DATA Former Drake Property 26485 Thornton Road Thornton Calrfornla . ETHYL MOTOR SAMPLE DEPTH BENZENE TOLUENE I BENZENE XYLENES TPH-G TPH-D OIL Q ft bgs DATE �mglkg)_—_(mglkg)_ —(mglkg} _[mglkg) m !kg m !kg m !kg PTI 4 06!02193 ND<0 050 ND<0 050 €` ND<0 050 ND<0 050 ND<O 050 - PT2 4 06!02193 ND<0 050 ND<O 050 ` ND<0 050 00053 ND<O 050 PT3 4 06!02193 NDcO 050 ND<O 050 ND<0 050 ND<O 050 ND<O 050 - Syyi 4 06102/93 ND<00050 ND<O 0050 0.015 00088 41 T1a 9 06102/93 ND<O 0050 ND<0 0050 ND-r:0 0050 N0<0 0050 ND<0 5 - T1b 9 06!02193 ND<O 50 017 23 22 510 T2a 9 06102/93 ND<0 0050 ND<0 0050 ND<O 0050 ND<O 0050 ND<O 50 72b 9 06/02/93 ND:0050 ND<O 050 10 12 100— STKi 1 06/02/93 1 NO 0050 ND<O 0050 ND<0 0050 ND<0 0050 0 79 EX1-9 9 91/19/93 ND<0 001 ND<O 001 ND<0 001 ND<O 001 ND<O 04 -- EX2 7 7 11119!93 ND<O 001 NDc0 001 ND<0 001 ND<O 001 ND<0 04 EX4-7 7 11/19/93 ND<O 001 ND<O 001 ND<O 001 ND<0 001 ND<O D4 <10 <10 EX6-7 7 11/19193 ND<O 1 ND<O 1 0 38 14 28 -- EX8-7 7 11/19193 ND<O 001 ND<0 001 NDcO 001 ND<O 001 ND<O 04 <10 <10 EX9-7 7 11119193 ND<O 2 ND<O 2 ND<O 2 ND<O 2 ND<8 0• -- MW1-11 11 11119193 <0 001 <0 001 <0 001 c0 001 <0 04 -- MW1-21 21 11119193 <0 001 <0 001 <0 001 <0 001 <0 04 <10 <10 MW2-11 11 11119193 <0 D01 <0 001 <0 001 <0 001 <0 04 -- MW2-21 21 11119!93 <0 1 <0 1 024 <0 1 39— <10 <10 MW3-11 11 11119193 <0 001 <0 001 <0 001 <0 001 <0 04 -- - MW3-21 21 11119193 <0 5 <0 5 <0 5 e05 <20 <10 <10 ETHYL- MOTOR SAMPLE DEPTH BENZENE TOLUENE BENZENE XYLENES TPH-G TPH-D OIL ID ft bgs DATE Ng/k9) �g1kg pglkg (Pglk Irk /k ik B-1 5 02/16/95 ND<5 0 NDc5 0 ND<5 0 ND<5 0 ND<1 000 10 02116/95 NDc50 ND<50 ND<50 ND<50 ND<1000 -- -- 16 02116/95 ND<5 0 ND<5 O ND<5 0 ND<5 0 ND<1 000 -- B-2 6 02116!95 ND<50 ND<50 ND<50 ND<50 ND<1000 - 16 02116/95 ND<5 0 ND<5 0 ND<5 0 ND<5 0 ND<1 000 B3 6 02116195 NE ND<50 52 ND<50 ND<1000 11 02116/95 NDc5 0 NpcS 0 ND<5 0 ND<S 0 ND-c1 000 B-4 6 02/16195 ND<5 0 i NDc5 D ND<5 0 1 ND<5 0 ND<1 000 - I 1i02116/95 NDc50 ND<50 NDc50 ND<50 ND<1000 -- 16' I 02116/95 ! ND<5 O ND<5 0 ND<5 0 NDc5 0 NDc1 000 B-fi I 6 02/16/95 NDc5 0 I ND<5 0 ! ND<5 0 ND<5 0 ND<1 000 11' 02116/95 1 ND<5 0 I ND<5 0 NDc5 0 NDc5 O ND<1 000 B-6 6 02/16195 ND<5 0 ND<5 0 ND<5 0 NDc5 0 ND<1 000 `- - 11 02116/95 ND<5 0 ND<5 0 ND<5 0 ND<5 0 NDc1 000 - - 16 02116/95 ND<5 0 ND<5 0 ND<S 0 ND<5 0 ND-c1 000 ' 0 B-7 1102116/95 NDc5 0 ND<5 0 ND<5 0 ND<5 0 ND-1 000 i li I I it B3 i 6' 02116/95 ND<5 0 I ND<5 0 ND<5 0 ND<5 0 i ND<1 000 I i1 I 02/16/95 ND<5 0 i ND<5 O i ND<5 0 ND<5 0 ND<1 000 I { B-9 6 02116195 ND<5 0 ND<5 0 I ND<5 0 ND<5 0 NDc1 000 I 11' 02!16195 N0<5 0 ---N[)<5 0_--NDc5 0— ND<5-0--1 ND<1 000 I B10 S. 02116/95 I ND<5 0 ND<5 0 I ND<5 0 ND<5 D 1 ND<1 000 I = 11 02116195 ND<5 0 NDc5 0 ND<5 0 ND<5 0 ND-0 000 I 16 02/16/95 ND<5 0 ND<5 0 ND<5 0 ND<5 0 ND<1 000 It Ns= feet below ground surface =Product is not typical gasoline TPH-G s tmat petroleum hydrocarbpns as gasoline(EPA method 8015 modrted) =Increased reporting hmd 'I ND=Not detected at of abode reporting fimd reporting limit listed next to ND =Not characterized as gasoline L--=tabotatnry surrogate recovery beyond acceptable limits due to presence of matrix in wie+ant 01111�E4 w�i �— FLUOR DANIEL GTI