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Weck Laboratories, Inc. <br /> ArlalytiCal Laboratory Services-Since 1964 <br /> Certificate of Analysis <br /> Weck Laboratories, Inc <br /> Metals(Aqueous)by EPA 6000/7000 Series Methods-Quality Control <br /> Sample QC Spike %REC RPD <br /> Analyte Result Result Qualifier Units Level %REC Limits RPD Limn <br /> Batch W8D0116-EPA 3005A <br /> LCS(R'8D0116-BSI Prepared:04/03/08 Anal�yzed:04/10/08 <br /> Sodium,Dissolved.................................. 13.4 mg/I 51.0 105 85-115 <br /> Calcium,Dissolved................................. 53.0 mg/I 51.0 104 85-115 <br /> Potassium,Dissolved.............................. 61.9 mg/I 60.0 103 75-125 <br /> Magnesium,Dissolved........... ............. 52.0 mgn 50.0 104 85-115 <br /> N1atrixSpike(WSD0116-NIS1) Source:80401077=01 _ _ Prepared:04/03/08 Analyzed:04/10/08 <br /> Sodium,Dissolved.................................. 1 169 mg/I 51.0 113 70-130 <br /> Calcium,Dissolved.................................107 160 mgn 51.0 104 70-130 <br /> Potassium,Dissolved..............................599 67.3 mgn 60.0 102 70-130 <br /> Magnesium,Dissolved...........................39.0 91.8 mgn 50.0 105 70-130 <br /> Matrix Spike Dup 8D0116-MSD1) Source:8040107-01 PrePared y 04/03/08 Analyzed:04/10/08 _ <br /> __ — - <br /> - -- —------ — --------- - - — --— — <br /> Sodium,Dissolved..................................111 163 mg/I 51.0 tot 70-130 4 20 <br /> Calcium,Dissolved.................................107 157 mg/I 51.0 99 70-130 2 20 <br /> Potassium,Dissolved.............................5,99 68.3 mg/I 60.0 104 70-130 1 20 <br /> Magnesium,Dissolved...........................39.0 89.9 mg/I 50.0 102 70-130 2 20 <br /> Weck Laboratories,Inc <br /> Organophosphorus Pesticides by EPA Method 8141A-Quality Control <br /> Sample QC Spike %REC RPD <br /> Result Result Qualifier Units Level %REC Limits RPD Limit <br /> Batch W8D0253-EPA 3520B <br /> Blank(1V8D0253-BLKI) ___-__________ Prepared:04/07/08-Analyzed_04/17/08 <br /> Surrogate:"1'riphenyl phosphate 0.841 ug/I 1.00 84 6-173 <br /> Azinphos methyl(Guthion).................... ND ug/I <br /> Bolstac.................................................... ND ug/I <br /> Chlorpyrifos............................................ ND ,ug/I <br /> Coumaphos............................................ ND ug/I <br /> Demeton-0.............................................. ND ug/I <br /> Dernelon-s...................._......................... ND ug/I <br /> Diazinon.................................................. ND ug/I <br /> Dichlorvos.............................................. ND ug/I <br /> DiSulfoIon............................................... ND ug/I <br /> Etlioprop................................................. ND ug/I <br /> Fensulfothion.......................................... ND ug/I <br /> Penthion................................................. ND ug/I <br /> Merphos.................................................. ND ue/1 <br /> Methyl parathion...___........................... ND ugn <br /> Lab#:8040302 Page 4 of 7 <br /> 14859 East Clark Avenue,City of Industry,California 91745-1396 (626)336-2139 FAX (626)336-2634 <br /> www.wecklabs.com 30 <br />