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TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER GAUGING AND LABORATORY ANALYTICAL DATA Former Tosco Bulk Terminal No. 10013 3505 Navy Drive,Stockton,CA Approximate 4 TOC Constructed Depth to Oroundwflter TPH A Well Elevation Total Well Groundwater TPH-U(pg/L) i n)zene Poiuenc Ethylber )lBE -Sample Date- Elevetiov (pglL) , ('g/j,) (.ug2.) D[PB('p eJL) .f mE TDA 1f,fiunoi Eihnnol Number (Feet above _Depth -(feet below : (fectabo�e _ - (µ5�-� - (µ°ms) (liFlL) -..(PBR+.. .,((i L} NISL): (feet below. TOC) SL). �A Matt od_ 8o isM 2.51 _ 715 4.21 n -1.7Q,-_ 71(r), ND<50 ND<0.30 ND<O 50 _ MW-22C 2/17/2005dup 251 715 ND<0.50 NDG1:D NI)<0:50 5.7 ND<0.50 ND�SO ND<5.0 ND<500� ND�So MW-22C 05/12/05 �(r) 1. _ND<g0 ND<0.50 ND<0.50 1'1 50. ND<L0 NI>Q1,50 26 ND<0.50 ND<OSO NDc5.0 ND<500 ND<50 251 71.5 5.25 _2,74 120 _ _ 38(uj ND�.50 0.25(u) ND<0.50 _ ND<L0 ND<0.50 6.6 ND<Q50 NI)<Y),50 39 MW-22C 5/12/2005dup 251 71.5 - 130 _33(u) ND<0.50 0.23(u) ND<0-50 ND<L0 ND<0.50 6.0 ND<0.50 ND<0.50 38 MW-22C 08!30/05 251 71.5 6.50 -- MW-22C 11/30/05 -3.99 •t9 ND<50 ND<0.50 ND<O.50 ND<0.50 ND<1.0 NDN.50 9.5 -_ -- 251 71.5 6.75 -4.24 ND<50 _NDG50 ND<0.50 ND<0,50 ND<0:50 NIKOy50. 63 ND<500 ND<50 MW-22C 02!02/06 2.51 71.5 4.35 ND<0.50 ND<I.0 ND<0.50 7.0 NDW.SO, ND<0.50 22 MW-22C 05/30/06 -184 ND<50 ND<50 ND<0.50 ND@SO NI)<0.50 1VDc1.0 '- 251 71.5 4.90 ND<0.50 6.0 ND�.50 ND<0.50 48 ND<I0,000 ND<I00 MW-22C 08!31/06 -239 _ ND<50 _,ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 ND<0.50 6.1 _ 2.51 7L5 6.09 3.58_ _ND<50__ ND<50 ND<0.50 1, <0,50' ND<0.50 ND<0.50 ,NIK0.50 50 ND<I00 MW-22C I(/16/06 2.51 715 6.27 ND<L0 ivD<OSO 6.4 ND@50 ,NIK0.50 46 ND<10,000 ND<250 -3.76 - 100 _ !__ND<50 ND<0.50 ND<0,50 NDc0.50 ND<1.0 MW 22C 07126/07 251 713 5.55 3,04. ND<50 _ND�50 ND MW-22C 05/29/07 2-51 71 5 6.15 ND<1.0 ND<0:50 0.8 ND<0.50 NDc0.50 :ND�5.0 76 ND<250 -3.64 ND<50 NIX50 ND<0.50 ND<0.50 ND<0.50 NI)<IA ND<0a50 1.6 ND<0.50 ND<0.50 NO<.0 MW-22C 0827/07 251 7IS 6.60 FV 22C 11/30/07 -4.09. S8 NIX50 ND<p.50 ND@50 NI)<0.50 ND<1.0 ND<0.50 6S -- --- 251 715 6.55 -4_04 _ 120 NDc50 3,0 ND<0.50 ND<0.50 46 ND<I0,000 ND<250 MW-22C 03/!9/08 251 0.6 ND<0.50 1.9 NIX0.50 ND<0:50 ND<0.50 NDN.50 ,ND<5.0 7I 5 5.42 _ _Z 44 ND<50 ND<50 ND<p.50 ND<0.50 ND<0.50 ND<250 MW-22C 0521/08 251 71,5 ND<1,0 ND<0.50 ND<0,50 ND<0.50 Nl)s0.50 ;ND<5.0 ND<10 ND<250 5.99 -3.48 68 _ MX50 ND<0.50 ND<0.50 NIX0.50 ND<1.0 ND<0.50 NDe0,50 ND<0.50 ND<0.50 -NDc5.0 MW 22CV rt)8 251 71.5 6.47 3.Q6 NIX50 NIX50 NDcp.50 ND<0.50 NIX0.50 ND<I.0 ND<0.50 ND<0.50 ND<0.50 ND<OSO ND<5.0 ND<!0 ND<250 MW-22C /,8 251 71.5 6.25 -3.74 ND<50 ND<50 ND<p.50 ND<0.50 ND<0.50 MW-22C /09 251 7L5 NI)<1.0 ND�.50 ND<OSO ND<0.50 NDc0.50 ND<5.0 _ 5.60 -3.09_ ND<50-. ND<50 N><O.50 ND<0.50 ND<0.50 Ni?c1.0 Nl><OTO 0.6 ND<0.50. NIK0.50 ND<10 ND<100 NI3<250 MW-22C /09 251 71.5 5.60 30� 79 NCK50 ND�.SO ND<p.50 ND<0.50 ND<IA ND<0.50 0.6 ND<0-50ND�50 NI3<(0MW-22C /09 252 7L5 636 -3.84 Nf)c50_ NDc50 /,1X0.50 ND<0.50 ND<0.50 ND<L0ND<0.505.4�fW-22C !09 252 71.5 2.{8 0.34 ND<50 62 ND�.50 ND<0.50 ND<0.50 ND<I,0 ND<0.50 5.8 ND<0.50 ND�.50 - ND<10 ND<100 ND 250 MW-22� 02/03/10 2.52 71.5 5.20 _ MW-22C OSN6/IO -2.68 ND<50 62 ND<0.50 ND<0.50 NI)<0.50 ND<LB ND�.50 7.7 ND<0.50 ND<0.50 35 NDc100 ND<250 2.52 71.5 4.95 -2.43 ND<50_ ND<50 ND<0.50 ND�.50 1YD<0.50 ND<I.0 _ MW-22C 08/30/10 252 71.5 6.46 ND<0.50 6.0 ND<030 ND<0.50 NDctO ND<I00 -3,94 390 -ND<50 ND<0.50 ND�.50 ND<0.50 NDc1.0 0.6 MW-22C 12/03!10 2.52 71,5 5.98 6.7 ND<0.50 ND<0.50 ND<IO NIXI00 ND<250 MW-22C 02/18/11 -3.46 310 ND<50 ND<p.50 ND<050 ND<0.50 NDc1.0 ND<0.50 NI)<0.50 ND<OSO ND<0.50 ND<]0 252 71.5 4.80 -2.28, 160 <50 <0.50 MW-22C 05/1 1/1-1 252 71.5 <D-50 <0.50 <Lo <0.50 <D.50 <0.50 MW-22C 09/07/11 252 5.17 -2.65 190 G50 <p.50 <p,50 <0.50 <- <0.50 <IO <I00 Q50 71.5 I B c0.50 x.50 x.50 <OSO 6.23 -3.71 60 20 <0.50 <p.50 �.SO <I,0 MW-22C 12/06/11 252 71.5 6.32 1.2 4.9 <0,50 <0.50 <10 <100 <250 -3,80 c$0 G50 t<05O <0,50 <0.50 <1.0 <0.50 MW-22C 03/05/12 2.52 715 5.82 0.91 <0.50 <0.50 <10 Q50 -3.30 250 X50 <p-50 <p-50 <I.0 <0.50 <0.50 <0.50 <0.50 <]0 <I00 Q50 Anhre.l.rra.,; KOa`ar TOC -Top of coin. (a) Casing elevation eaveyed to the nearest 0.01 f relative to meso xa Ic.el 1,) MSI. -Mean acs less!. Caring elewtioms stinting in SA)2 ere head on intr'TY dere from secdnd quarter 2002 Aft.oompensan of lahontory repored cwawtratima of Mf BE end TPA in welt.MW-8 em!MW- we1Lv),ix is mspecled the!the 11(the tsw<traan"r TPFI-O -Tool Casing ekvatirn f MW_l was tentrveyed m f th goester 2002 awple identifiarian ware mixekeny switched m the field and the results for well Mw., Perrot-hydrowrb°m a pnaelirte repesent cdimrtrations from MW-14,and lite vers..The laboratory reposed concentration of MTBE vt cell AIW-R . TPH4) -Taal ptrolemn hydrecarbrns n diad. lb) Gonads urea demotion relativeto mean sea less! idential to the cd covicen Ic) Btind dupliea a report o-:tion res well MW-l4 during the third quarter 2003 groundwater monitoring event h: MTBE •MahN tat huryi aha - addition,the reported MTBE oorcartratian f ws11 MW'14u lea then one.der of mapaimde diR rnt thin the hraroicai TAA¢ Id) Semple 000teina doken during tranv MTBE tatiisuuation,for axil mw4.Thus,anehtital mule providW as a order by the Iahoratory ere r Is„I -Tat amyl methyl ether (e) this t.uc.and anelytieat remote I4 es the Id'Pra"are as the ep-od as MW- TBA -Tat Berl alcohol Oeavoyad on 12/10/96 provided as mW- aeport 8 in this table. [1f,sgnapyl ether UNF: out t1) Datroved our 05)05A)6 P) indicates that the stmog.tc rem ery was of aarPtanre aitiaia fa the resale � lul F TBEElr.l tat twslaha (8t Also aoalv[ed for mmaal aprne,p fuel,kaaene,and hydraulic al,sur of which were ND ih) Tmd deck Rauh.dulal u presser than th<M1felhaal flet«non Lunn Fut les.!hoes the Repamag[.ones tbmit of gtanntiuw,nl . r (�1 Ila ahwtroarbona cunoabuteJwth< truuon Page 32 of 11 \T( P1,1-!\ 'n' 7�11`t()SXx