ARCHIVED REPORTS_THIRD QUARTER 2011 SITE STATUS, REMEDIAL SUMMARY, AND GROUNDWATER MONITORING REPORT

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Table 13 Dual Phase Extraction System-Well Status Data Parcel 2A-L&M OU 666 West Weber Avenue,Stockton,CA Well Number DPE-13 2AMW-14 MW-40 Manifold Well Drop Tube Tube Flow SPH Manifold Well Drop Tube Tube Flow SPH Manifold Well Drop Tube Tube Flow SPH Vacuum Vacuum Vacuum Depth Rate FID Thickness Vacuum Vacuum Vacuum Depth Rate FID Thickness Vacuum Vacuum Vacuum Depth Rate FID Thickness Date Status (in Hg) in Hg (in Hg) feet) (gpm ppmv (feet) Status in H in H (in Hg) feet pm) ppmv (feet) Status in H in H (in Hg) (feet) pm) ppmv) (feet) 4/19/2006 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 5/10/2006 O 22 9 18 28 1 5,000.0 C 6/14/2006 O 24 5.4 20 28 1+ 5,000.0 C -- -- -- -- -- 412.0 7/26/2006 C -- -- -- -- -- -- O 25 3 19 25 1 580.0 8/24/2006 C O 23 9 21 25 -- 4,015.0 9/18/2006 C O 23 4 20 20 2,000.0 10/11/2006 C C 23 6 18 19 295.2 11/13/2006 C C -- -- — — 790.5 12/7/2006 C C -- — — - 5/31/2007 C 25% 8 — — 15 — 6/19/2007 C C -- — — — C - 7/5/2007 O 7 28 C — — — O 9 142.0 7/30/2007 C -- -- C — — — C -- -- 8/7/2007 5% — 600 C — — — C — 9/28/2007 C — -- 100% -- 20 20 25 1 1,095.2 C — 10/23/2007 Off* — — -- -- -- -- -- O 20 20 17 9(OB) 2 4,279.5 -- Off* -- -- -- -- — -- 11112/2007 C. — — 2,300(F/0) C -- — — — 1,755.2 C* — 5,000+ 12/6/2007 C — 1,202.1 C — — — 2,000+F/O C — 5,000+F/O 1/23/2008 C — 2,000+(F/0) C — — — 1,401.2 C — 2,000+F/O 2/12/2008 — 3/3/2008 — O 20 20 17 24 1 7,000.0 — 4/16/2008 C — C -- -- — — -- -- — — 5/12/2008 C — O 22 23 16 24 -- 1,150.0 O — 6/4/2008 C — O 23 23 19 17 1 2,700.0 C — 7/2/2008 C — O 20 20 15 23 1 4,200.0 C — 8/11/2008 C — C -- -- — -- -- -- C — 9/10/2008 C* — C -- — 401.2 C. — 10/9/2008 C — O 24 — 378.2 C — 11/11/2008 C — — -- -- -- -- -- O 24 -- — -- -- 378.2 -- C -- -- -- -- — -- -- 12/17/2008 C — — O 20 20 15 21 1 1,500.0 C — 1/14/2009 C — O 20 20 15 6(OB) 1 2,200.0 Well destroyed in November 2008 during excavation activities. 2/11/2009 C — C -- -- — 545.1 3/11/2009 C -- — -- -- -- -- -- O 22 22 17 7(OB) 1 756.9 -- 4/16/2009 C — O` -- -- -- — 302.1 5/8/2009 C — O` — 215.7 6/8/2009 — O` — 75.2 7/9/2009 C — O` — 302.7 8/11/2009 C — O` — — 402.7 9/8/2009 C — O' 20 20 17 7(OB) 1 100.0 10/15/2009 C — — W 19 19 15 7(OB) 1 1,300.2 11/10/2009 C — — W -- -- — — -- 438.9 12/9/2009 C — O 18 18 14 1 1,300.0 1/12/2010 C -- — -- -- -- -- -- C -- — — -- -- 27.9 -- 2/4/2010 C -- — -- -- -- -- -- C -- — — -- -- 128.7 -- 3/3/2010 C — O 15 15 10 9(OB) 1 1,400.7 4/7/2010 C — C -- — — 195.1 5/13/2010 C — O 20 20 16 5(OB) 1 775.0 6/10/2010 C — O` — — 277.1 7/12/2010 C -- — -- -- -- -- -- O 20 20 16 4(OB) 1 1,077.2 -- 8/4/2010 C — C` -- -- — — 577.1 10/7/2010 C — C -- -- — — 602.7 11/17/2010 C — — O 20 20 14 6(OB) 1 900.0 12/14/2010 C — — -- -- -- -- -- C -- -- — — -- 611.2 -- 1/11/2011 C -- — -- -- -- -- -- O 20 21 15 5(OB) 1 1,100.0 -- 2/10/2011 C -- — -- -- -- -- -- O -- -- — — -- 217.9 -- 3/17/2011 C — O -- -- — — -- 4/8/2011 C — O 20 23 — — 5/13/2011 C C -- -- — — 6/16/2011 C C — — 7/13/2011 — -- -- -- -- -- C -- -- 8/11/2011 O — 1,700.0 O 0 9/15/2011 O — Definitions: Notes: --=Not measured or not applicable 1 =Valve closed after FID and manifold vacuum readings were taken. B=Bottom 2=Valve closed after FID reading was taken. C=Closed 3=Shut off for monitoring and sampling event. FID=Flame Ionization Detector F/O=FID flame out gpm=Gallons per minute in Hg=Inches of mercury O=Open OB=Off bottom ppmv=Parts per million by volume SPH=Separate phase hydrocarbons *=TBA detected I:\Tidewater\TW Stockton(P2A)\Engineering\O&M\Tables\O&M Tables 201 1\3Q1 1\Parcel 2A OM Tables 3Q11.xlsx Page 4 of 4