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TABLE 5 LABORATORY ANALYTICAL RESULTS 2011 ANNUAL GROUNDWATER MONITORING REPORT FORMER MARLEY COOLING TOWER SITE STOCKTON,CALIFORNIA Laboratory Analyses Screened Hexavalent Water-bearing Nitrate as N Calcium Chromium Chromium Manganese Well Zone Sample Date Event/Purpose (mg/L)* Sulfate (mg/L) (mg/L) Arsenic (pg/L) (pg/L) (pg/L)** Iron (pg/L) (pg/L) TDS (mg/L) TOC (mg/L) Water Quality Objective 10 250 -- 10 50 50 300 50 450 Background/Compliance Wells Continued MW-304 Shallow 1/21/2008 Background NA NA NA NA NA NA NA NA NA NA 4/1/2008 2nd Qtr./Compliance NA NA NA NA NA NA NA NA NA NA 7/10/2008 3rd Qtr./Compliance NA NA NA NA NA NA NA NA NA NA 10/22/2008 4th Qtr./Compliance 2.2 31.6 NA <5 24 <10 <100 <10 893J 5.8 1/9/2009 1st Qtr. NA NA NA NA NA NA NA NA NA NA 4/8/2009 2nd Qtr. NA NA NA NA NA NA NA NA NA NA 7/15/2009 3rd Qtr. NA 41.3 NA <5 20 <10 990 <10 864 1.7 10/14/2009 4th Qtr. NA 43.1 NA 3 14 <10 659 <10 904 1.9 2/2/2010 1st Qtr. NA 44.2 NA 3 35 <10 726 <10 849 0.7U 4/14/2010 2nd Qtr. NA 41.8 NA 3 8 <10 444 <10 823 0.5U 7/8/2010 3rd Qtr. NA 44.2 NA 3J 27 10 714 <10 848 0.8J 10/13/2010 4th Qtr. NA 41.7 NA 5 20 <10 703 <10 843 1.0 1/21/2011 1st Qtr. NA 39.6 NA 4J 27 8.06 313J 5UJ 848 <1.0 4/13/2011 2nd Qtr. NA 39.9 NA 3J 15 8.04 424 <10 856 0.7J 7/20/2011 3rd Qtr. NA 41.1 NA 3J 17 <10 569 <10 856 <1.0 10/12/2011 4th Qtr. NA 42.4 NA 2J 6J 3.13 418 <10 859 0.5J MW-401 Shallow 1/9/2008 Background 3.7 16.9 NA <5 <10 <10 93 <10 284 <1.0 7/10/2008 3rd Qtr./Compliance 2.3 16.2 NA <5 <10 <10 157 <10 252 <1.0 10/22/2008 4th Qtr./Compliance 2.4 14.3J NA 5 <10 <10 <100 <10 229J 4.OJ 1/8/2009 1st Qtr. 1.8 20.3 J NA 6 11 <10 <100 <10 236 <1.0 4/7/2009 2nd Qtr. 2.7 17.4 NA 5 <10 <10 130 <10 253 11 7/14/2009 3rd Qtr. NA 16.2 NA <5 <10 <10 115 <10 230 1.2 10/12/2009 4th Qtr. NA 15.9 NA 5 5 <10 119 <10 247 1.7 2/1/2010 1st Qtr. NA 17.7 NA 4 6 <10 152 <10 266 0AU 4/13/2010 2nd Qtr. NA 16.2 NA 5 7 <10 <50 <10 283 1.2 7/7/2010 3rd Qtr NA 14.1 NA 5 4J <10 124 <10 235 0.7J 10/12/2010 4th Qtr. NA 14.2 NA 4J 5J <10 69 <10 219 1.4 1/20/2011 1st Qtr. NA 14.OJ NA 6 <10 0.98 39J <10 257 0.81 4/13/2011 2nd Qtr. NA 13.4 NA 5 3J 0.74 120 <10 218 1.3 7/19/2011 3rd Qtr. NA 14.0 NA 5 <10 <10 57 <10 225 <1.0 10/12/2011 4th Qtr. NA 19.4 NA 4J <10 <0.5 99 20 237 0.91 MW-310 100-Foot Sand 1/21/2008 Background 6.4 16.5 NA 6 <10 <10 243 <10 377 <1.0 4/1/2008 2nd Qtr./Compliance 9.9 21.0 NA 7 11 <10 187 <10 463 <1.0 4/1/2008 2nd Qtr./Supplemental(Dup) 9.9 19.8 NA 7 10 <10 200 <10 468 <1.0 7/10/2008 3rd Qtr./Compliance 9.6 20.9 NA 8 <10 <10 519 <10 476 <1.0 10/21/2008 4th Qtr./Compliance 12.9 40.6 NA <5 46 <10 <100 <10 748 2.8 1/9/2009 1st Qtr. 12.2 23.6 NA 8 25 <10 <100 <10 608 <1.0 4/7/2009 2nd Qtr. 12.4 27.9 NA 7 <10 <10 456 <10 545 1.2 J 7/14/2009 3rd Qtr. NA 38.4 NA <5 10 <10 626 <10 743 1.1 7/14/2009 3rd Qtr. (Dup) NA 37.8 NA <5 <10 <10 637 <10 756 1.3 10/12/2009 4th Qtr. NA 52.2 NA 4 8 <10 569 10 777 1.3 2/1/2010 1st Qtr. NA 39.6 NA 4 41 <10 605J <10 780 0.5 2/1/2010 1st Qtr. (Dup) NA 37.5 NA 4 39 <10 750 <10 749 0.5 4/13/2010 2nd Qtr. NA 37.8 NA 4 12J <10 402 <10 821 0.7U 4/13/2010 2nd Qtr. (Dup) NA 38.1 NA 4 25 <10UJ 422 <10 782 0.7U 7/7/2010 3rd Qtr. NA 40.0 NA 3J 30 <10 628 <10 754 0.4J 7/7/2010 3rd Qtr. (Dup) NA 40.2 NA 3J 22 <10 610 <10 759 0.2J 10/13/2010 4th Qtr. NA 44.4 NA 4J 26 <10 789 <10 767 0.91 1/21/2011 1st Qtr. NA 45.0 NA 5 19 7.44 542 <10 899 <1.0 4/13/2011 2nd Qtr. NA 40.6 NA 3J 14 7.04 458 <10 755 <1.0 7/20/2011 3rd Qtr. NA 47.0 NA 3J 17 <10 515 <10 787 <1.0 10/12/2011 4th Qtr. NA 44.2 NA 1J <10 <0.5 413 20 837 0.7J (Page 16 of 19)