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MONITORING AND REPORTING PROGRAM ORDER NO. R5-2008-0149-010 4 <br /> PARKINSON'S HAMMER 1-5 ARCO <br /> SAN JOAQUIN COUNTY <br /> Table 1A: Samplings Frequency (During 90-Day 03/1-12O2 Pilot-Scale Testing) <br /> Well ID Frequency Constituent Suite(S)3Monitoring Objective <br /> MW-3 Every 3 weeks" Suites A and B Background? <br /> MW-1, MW-2, MW-5 Every 3 weeks8 Suites A and B Treatment Zones <br /> MW-4 Every 3 weeks8 Suites A and B Transition Zone6 <br /> MW-7 Every 3 weeks8 Suites A and B Compliance <br /> Well IDs shown on attached Figure 3 <br /> i.e.,weekly,monthly,quarterly,annually,other <br /> ' Constituent suite components listed in Table 2 below <br /> 4 Well used to monitor compliance and for the presence of breakdown/byproducts of the treatment migrating beyond the expected treatment <br /> area <br /> s Wells used to evaluate in-situ bioremediation progress inside the treatment zone,to gauge effectiveness of 03/1-12O2 injection in reducing the <br /> dissolved petroleum hydrocarbon concentrations,and to monitor potential changes in groundwater geochemistry that could be attributed <br /> to the injection of oxidizing agents <br /> a Well used to evaluate migration of pollutants within the treatment zone.The transition well may or may not be within the zone of influence. <br /> ' Well used to monitor the background natural changes in groundwater geochemistry in areas unaffected by oxidant injection. <br /> s To be sampled prior to startup(baseline),during weeks 3,6,9,and 12 of the testing,and following completion of the testing(post-test). <br /> e All sampling conducted following a 3-well volume purge. <br /> Table 113: Sampling6 Frequency (During Periods of No Remediation/Post-Remediation) <br /> Well ID Frequency Constituent Suite(S)3Monitoring Objective <br /> MW-1, MW-2, MW-5, Semi-Annually4 Suite A NA <br /> MW-7, new wells <br /> MW-3, MW-4, MW-6, Bi-Annually5 Suite A NA <br /> Well IDs shown on attached Figure 3 <br /> Z i.e.,weekly,monthly,quarterly,annually,other <br /> 3 Constituent suite components listed in Table 2 <br /> ° Wells to be monitored for depth to water, presence of free product, and purge sampled on a semi-annual basis during the 2nd and 41" <br /> quarters of each calendar year. <br /> s Wells to be monitored for depth to water,presence of free product,and purge sampled on a bi-annual basis during the 21d quarters of every <br /> second calendar year(during 2Q 2011,2Q 2013,2Q 2015...) <br /> 6 All sampling conducted following a 3-well volume purge. <br /> Table 2: Analytical Methods <br /> Constituent Method' Maximum Practical <br /> Quantitation Limit(P9/L)2 Frequency <br /> Suite A <br /> TPHg GC/MS 50 As indicated in <br /> BTEX4, MTBE, TBA EPA 8260B 0.50 (except 5.0 for TBA) Table 1 <br /> Suite B <br /> Metals, dissolved EPA 6010B/6020' 2.0 <br /> Total Chromium EPA 200.8/218.6' 10 <br /> Hexavalent Chromium EPA 7199/218.6' 2.0 <br /> Bromide EPA 300.0' 100 As indicated in <br /> Table 1 <br /> Bromate EPA 300.0/317.0' 10 <br /> Fe`Z, Fe+3, Se, CI, F, P EPA 200.7/SM3500-FeD/ 10 <br /> SM4500-P/300.0/6010 <br /> TDS EPA 160.1' 10 <br />