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I TABLE 5 Analytical Parameter Summary ARCO Service Station No 5469 130 South Wilson Way,Stockton,California Distance to Ferrous Total Heterotropluc Nitrate Sulfate Sulfite Pliosplwte Well nearest COD t DO 2 ORP3 iron 4 iron 5 plate count 6 TOC 7 as NO3 8 as SO4 a at S03 9 (Ortho)as P 8 TDS ii Number Date injection well m L m L m IL M&I CFU/ml m IL m 1L mglL m 1L me1L m L NOTES 1 COD was analyzed u�utg EPA Method 410 4 µg(1..=nucrogans per Mer QA/QC Review 2 Dissolved oxygen(DO)was analyzed using EPA Method 360 1 NA Not analyzed A=Data accepted without qualification 3 Oxidation reduction potential(ORP)was analyzed using ASTM D1498 76 J=Data accepted with qualification Femos won was analyzed using Hach Method 8146 NS Not sampled R—Data rejected 5 Total unu was analyzed using EPA Method 200 7 NP=Not Purged 6 Heterotrophic plate count was conducted using SM 9215 B <=Below detectton limit for the analytical methods used r Total organic carbon was analyzed using EPA Method 415 1 s Nitrite,nitrate,�ulfatcs and pho�phalcs were analyzed using EPA Method 300 0 9 Sulfite was analyzed using EPA Method 377 1 oTotal alkalinity was analyzed using SM 23208 u Total solids were analyzed using EPA Method 160 1 {1]The sample wry analyzed beyond the EPA recommended holdmgtrane [2]The incubation was performed at 35 degrees C for 48 hours with plate count agar [3]The sample was received beyond the EPA recommended holding turie [4]This sample was analyzed beyond the EPA recommend hold lure(8 hrs) The sample was kept on ice at 5 degrees C and analyzed within 24 hours of sample collection [51 Thus sample was prepared outside the 8 hour recornmended holdingtum for this analysts [6]Sample result may be biased high Matnc spike and matrix spike duplicate recoveries exceed upper control limits [7]Sample result maybe biased low Matrix spice duplicate recovery exceeds lower control limit Matnx apike recovery was within control hints [81 Reported results may be biased low since the analyses for these analytes were performed beyond the US EPA recommended holding tale [91 The method blank contains this analyte at a concentration above the reporting brat however the concentration is less than 5%of the sample result which is negligible according to metbod criteria {101 The reporting lust for this analyte has been raised to account for matrix interference [1 l]The concentration indicated for this analyte is an estimated value above the calibration range of the instrument [12]Confirmatory analysis was past EPA recommended holdmgtime [13]This sample was ongmally analyzed within the EPA recommended hold trine Re analysis for confirmation or dilution was performed past the recommended hold tune The result from the initial analyses are reported in the Table [14]Reported results may be biased high since the analyses for these analytes were performed beyond the US EPA recommended holding titre [15]Reported result should be considered estimated since the analyses were performred beyond the US EPA recommended holdingtune (16]Reported result may be biased low as indicated by a low average percent matnx spike recovery reported in the associated MS/MSD analysis (17]The reported result may be estimated since the analyses for these analytes were performed beyond the USEPA reconmcrided holding tune [181 The reported result maybe biased since the analyses for these analytes were performed beyond the US EPA recommended holding time [19]The reported result should be considered esturated due to a hiji relative percent difference reported between the prurary and laboratory duplicate sarryiles 5TRATU5 Arco_5469 O&M_Data 60f6