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TABLE 1 GROUNDWATER MONITORING AND CHEMICAL RE^LILTS FORMER REGAL STATION 603, 6425 PACIFIC AVENEUE STOCKTON CALIFORNI. '1Y1 Method 20 HELL CASING TOP OF DATE DEPTH PROD VACUUM CORRECTED TOTAL PET BENZENE TOLIIFNE ETHrL XI LENES Meth}] Le1L Butfl DISSOLVED D188olVed ELEVATION SLOT TOP OF THICK AT !WELL GW ELEV HYDPOCARB BENZFNE ELhel FEET AMSL FEET AMSL WATEROXSCEN Lead HEAD FT AMSL GAS-pANGE 8020 6260 IN FEET IN FEET IN FEET PPB PPR pPH ppR 111,13 PPR PPB PPM PPB MW-8 11 74 -23 26 03/29/94 49 2B 0 0 007 -37 55 MW-8 11 74 -23 26 04/26/94 49 66 0 0 010 -37 93 MW-6 11 74 23 26 OS/14104 49 92 0 0 013 -38 i9 MW-8 11 74 23 26 06/22/94 48 17 0 0 000 36 43 9800 1400 560 210 2100 MW 8 31 74 -23 26 Oa/17/94 50 44 0 0 oi0 38 71 MW 8 11 74 -23 26 09/19/94 49 1P 0 0 000 -37 44 5600 1400 140 140 770 MW-8 11 74 -23 26 10/26/94 49 43 0 0 000 37 69 MMW-6 W-8 11 74 -23 26 12/16/94 49 08 0 0 000 -37 34 7300 2500 170 11 74 -23 26 01/25/95 48 42 0 0 000 36 68 MW 8 I 11 74 23 26 03/15/95 47 52 0 0 000 -35 78 700 750 990 420 1100 MW-8 /96 46 83 0 0 000 -35 09 - 11 74 -23 26 04/12 _ MW-8 11 74 -23 26 05/17/95 46 32 0 0 000 -34 58 - MW-8 11 74 -23 26 06/21/95 46 02 0 0 000 -34 28 2400 590 63 85 310 MW-8 11 74 -]3 26 09/01/95 46 10 0 0 600 39 94 - �� MW-B 11 74 -23 26 09/26/95 46 1 0 0 000 34 36 5400 900 370 16o 1100 - MW 8 11 74 -23 26 to/17/95 46 a5 0 0 000 34 31 -- - MW B 11 74 -23 26 11/14/94 45 8 0 0 000 -34 06 MW 8 11 74 -2324 12/12/96 45 37 0 0 007 -33 59 4800 690 270 1100 -— MW 8 11 74 -23 26 01/22/96 44 4 0 0 000 32 66 MW-8 11 74 -23 26 03/06/96 43 56 0 0 000 -31 02 2500 250 190 76 !7'1 =. < MW-B 11 74 -2] 26 09/09/9( 41 82 0 0 000 -30 08 - MW-8 11 74 -23 26 01/22/9(, 40 05 0 0 002 2a 31MW B 11 74 -23 ]6 06/20/96 41 65 0 0000 -29 91 2700 210 240 l0U MW-8 11 74 -IJ 26 07/30/96 41 3 0 0 000 -213 56 1 2 MW-8 11 74 -]3 26 09/19/96 42 0 a 000 -30 26 2100 150 210 92 740 23 MW-8 11 74 -33 26 11/10/96 40 42 0 0 003 -28 68 1900 160 180 MW 913 770 15 11 74 -]7 26 03/18/97 37 84 0 0 000 -26 10 2800 ISO 380 110 13]0 X30 MW-9 11 74 -23 26 06/11/97 37 74 0 0 000 -26 00 1700 76 250 X76 590 r30+ MW-8 11 74 -23 2fi 09!22/97 3B 48 0 0 000 -26 74 1400 14 55 77 480 14" PRESENT MW-8 12/08/97 sparging and vapor extraction nystom operating MW B 11 74 -23 26 12/16/97 37 7 0 0 000 -25 96 4' " , r., 1 3 fll00$�' 2Z1i:1: �"JOe4 1 >,f 90r,S1 3.SF5JO}rAl 9 <5 0 hW-B 11—74 -73 26 O1/11/9a 34 08 0 0 000 -23 14 3600 39 MW-8 11 74 -23 26 05/19/9N 33 119 0 0 OOp 290 iB0 1300 34 21 35 8200 32 260 430 3300 B0 cap MW 8 11 74 -23 26 09/0a/9a 33 42 0 0 000 -21 68 3400 5 58 —,0 ,, MW 8 11 74 -23 26 ll/18/9a 32 72 a 0 000 20 98 1200150 ca 5 2 140 96 930 13 MW 8 tl 74 -23 26 01/04/99 32 03 �011 000 21 a9 5400 7yW g 55 170 1100 300 6 11 74 -23 76 11/IZ/o0 32 28 0 000 20 54 7000 's2 43 260 ta00c5t �';o Ieo pht.a2neon /IZ/971mfere"Gross'zconta1iii)Ated with submersible' 'Wrap ich showed TPh 0'17 {Tofu nor a vq/L"1 zthyi+Benaeue 5 ug/L` Xylenes>�9'-- L, 1 9 1a9/L Ecnsehc 1 ug/L 9/ �fI'14E hD �Si ug/L 1A the f 11al rinse