ARCHIVED REPORTS_20100427 ATC 1Q2010 GWMR COMPLETE

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Table 5 Analytical Data Summary Crop Production Services,Vernalis,California Pesticides (Z) VOCs(µg/L) EPA 8010/EPA 8021B/8260B 12'3) Total Oxidizable N Ammonia as N Dissolved EPA 504(Mod.)or E504.1 SRL 524M or E504.1 EPA 632/8321A EPA 353.2/353.3/ EPA 350.3/ Organic Carbon Well Identification Sample Date E415.1/ SM 4500 SM 4500 Bromodichloro- Dibromochloro- �n SM 4500/5310D DBCP EDB 192,3-TCP Diuron Chlorobenzene Chloroform 1,2-DCB 1,3-DCB 1,2-DCP 1,4-DCB Other (mg/L) (mg/L) (mgt) methane methane Intergrid Onsite MW-6R 3/4/2010 116 347 9.67 <0.025 0.51 3.3 <0.5 4.2 <0.5 <0.5 <0.5 <0.5 38 <0.5 1,2,3-Trichloropropane-2.8 1,2-Dibromoethane(EDB)-1.0 1-Chloropropane-1.1 9/23/2009 82.9 539 10.6 0.043 1.3 6 24(8) <0.5 4.9 <0.5 <0.5 <0.5 <0.5 61 <0.5 1,2,3-Trichloropropane-6.2 1,2-Dibromoethane(EDB)-1.4 1,3-Dichloropropane-0.71 Chloromethane-1.3 1/26/2009 87 740 19 0.32 1.2 11 <2.0 5.2 <2.0 <2.0 <2.0 <2.0 190 <2.0 NR 8/19/2008 22 680 42 0.024 1.8 5.3 18 <1.0 5.2 <1.0 <1.0 <1.0 <1.0 110 <1.0 2-Butanone-24 3/5/2008 75 3.6 <0.20 6.4 14 <1.0 3.1 <1.0 <1.0 <1.0 <1.0 48 <1.0 EDB-4.7 Downgradient Onsite MW-7 3/4/2010 21 63 3.54 <0.025 <0.025 0.43 2.3 <0.5/<0.5 <0.5/<0.5 <0.5/<0.5 <0.5/<0.5 <0.5/<0.5 <0.5/<0.5 29/30 <0.5/<0.5 1-Chloropropane-0.9/0.8 9/23/2009 2.73 40.6 2.24 <0.025 <0.025 0.26 1.7 <0.5/<0.5 <0.5/<0.5 <0.5/<0.5 <0.5/<0.5 <0.5/<0.5 <0.5/<0.5 18/19 <0.5/<0.5 Chloromethane-1.7/1.1 1/26/2009 39 83 4.8 <0.010 0.069 1.1 2J <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 47 <1.0 NR 8/19/2008 49 41 7.5 <0.010 0.14 1.2 1J <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 15 <1.0 ND 1/24/2008 33 59 11 0.065 0.093 2.3 2J <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 35 <1.0 ND Downgradient Offsite MW-5 3/4/2010 3 <1 2.86 <0.025 0.11 0.15 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 9.3 <0.5 ND 9/23/2009 11 2.52 <1 <0.025 0.056 <0.025 <1 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 2.8 <0.5 Chloromethane-1.3 1/26/2009 6.0 0.70 1.6 <0.010 0.70 0.11 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 6.8 <1.0 NR 8/19/2008 3.8 0.28 3.2 <0.010 0.51 0.071 <10 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 3.0 <1.0 ND 1/24/2008 0.86 0.63 3.2 <0.020 0.38 0.16 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 7.1 <1.0 ND 8/23/2007 9.7 0.78 <0.020 0.50 0.17 <10 NR NR NR NR NR NR <1.0 NR ND 3/5/2007 11/11 1.6/1.6 <0.020/<0.020 0.51/0.59 0.15/0.15 <10/<10 <1.0/<1.0 <1.0/<1.0 <1.0/<1.0 <1.0/<1.0 <1.0/<1.0 <1.0/<1.0 5.915.5 <1.0/<1.0 ND/ND 8/30/2006 2.7 1.56 <0.020 0.43 0.16 <10 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 8.8 <1.0 ND 2/27/2006 12 2.0 <0.020 0.46 0.35 <10 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 12 <1.0 McCI-11 8/23/2005 23 1.2 <0.020 0.55 0.36 <10 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 18 <1.0 NA 4/7/2005 19 1.8 <0.020 0.46 0.23 <4.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 9.8 <1.0 NA 8/31/2004 21.3 1.46 <0.02 0.57 0.78 <1 NR NR NR NR NR NR 31.4 NR ND 3/31/2004 18.8 2.89 <0.02 0.59 0.47 <1 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 16 <0.5 NA 8/21/2003 27.8 2.2 <0.02 0.16 0.28 <1 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 4.7 <0.5 NA 2/4/2003 25.6 3.8 <0.02 1.3 0.22 <1 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 9.2 <0.5 NA 8/7/2002 15.3 1.2 <0.02 0.23 0.06 <1 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 1.1 <0.5 NA 5/21/2002 15.1 3.1 <0.02 0.25 0.05 <1 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 0.67 <0.5 NA California Maximum Contaminant Level(MCL), June 2001 10 NA NA 0.2 0.05 NA NA (5) 100 (5) NA(5,6) 600 NA(7) 5 5 Notes: NR =not reported 1 Beginning in 2005,samples analyzed or nitrate-nitrite as N by EPA Method 5 5 Total tri a omet anes sum of bromodichloromethane,dibromochloromethane,bromofonn,and chloroform),M L=100 ug/L. =sample result/duplicate result. *Groundwater Elevations based on 31 August 2007 Survey(NAVD 29) (2)All target compounds below reporting limits unless listed. (6) Chemical listed with California Drinking Water Standards as an unregulated compound requiring monitoring. =not analyzed MSL-mean sea level (3)VOCs analyzed by EPA Method 8021B(November 1999-August 2003), (7) California taste and odor threshold action level=130 mg/L for sum of 1,2-dichlorobenzene and 1,3-dichlorobenzene. J=Estimated value,below quantitation limit MW-1 not shown in this Table,MW-1 was removed from MRP in 2007 EPA Method 8260B(March 2004-current) (8)Sample has a dilution factor of 10. "NA"=not available (4) In past sampling events,MW-2 samples/duplicates had one-time detections of (9)Sample has a dilution factor of 5. Only analytical data from 2002 to present is shown,a complete historical dataset is provided electronically in attachement 3 methiocarb(EPA 632)on 6/5/97 at 6.2/6.0 ug/L(no MCL). Analytical Data Summary Page 2 of 2