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TABLE 5 Analytical Parameter Summary ARCO Service Station No. 5469 130 South Wilson Way,Stockton,California Distance to Ferrous Total Heterotrophic Nitrate Sulfate Sulfite Phosphate Well nearest COD 1 DO 2 ORP' iron 4 iron 5 plate count 5 TOC 7 as NO3 8 as SO4 a as S03 9 Ortho as P 8 TDS 't QA/QC Number Date infection well m mm m CFU/ml m m m m m m L Review NOTES: t COD was analyzed using EPA Method 410.4 lig/L=micrograms per liter QA/QC Review'. 'Dissolved oxygen(DO)was analyzed using EPA Method 3601 NA=Not analyzed A=Data accepted without qualification 3 Oxidation reduction potential(ORP)was analyzed using ASTM D1498-76 J=Data accepted with qualification 'Farms iron was analyzed using Hach Method B 146 NS=Not sampled R=Data rejected Total iron was analyzed using EPA Method 200.7 NP=Not purged Heterotrophic plate count was conducted using SM 9215 B c=Below detection limit for the analytical methods used. 'Total organic carbon was analyzed using EPA Method 415.1 °Nitrite,nitrate,sulfates and phosphates were analyzed using EPA Method 300.0 9 Sulfite was analyzed using EPA Method 377.1 !0 Total alkalinity was analyzed using SM 2320B "Total solids were analyzed using EPA Method 160.1 [ll The sample was analyzed beyond the EPA recommended holding time. [2]The incubation was performed at 35 degrees C for 48 hours with plate taunt agar [3]The sample was received beyond the EPA recommended holding time. 141 This sample was analyzed beyond the EPA recommend hold time(8 hrs). The sample was kept on ice at 5 degrees C and analyzed within 24 hours of sample collection [5)This sample was prepared outside the 8 hour recommended holding time for this analysis. [6]Sample result maybe biased high. Manic spike and matrix spike duplicate recoveries exceed upper control limits. [7]Sample result maybe biased low. Matrix spike duplicate recovery exceeds lower control limit. Matrix spike recovery was within control limits. I 9MATus Arco_5469_0&M_Data 3 of 3 I