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MONITORING AND REPORTING PROGRAM ORDER NO , R5-2008-0149-XXX 4 APACHE PLASTICS (Former) SAN JOAQUIN COUNTY Table 1A : Samplings Frequency (Prior to Full-Scale Implementation) Well ID Frequency Constituent Suite(s)3Monitoring Objective MW-9, MW-13, M W- 23, MW-24, EW-1 , Other Suites A and B Treatment Zones VEW-1 and VEW-2 MW-2, MW-8 and Other Suites A and B Transition Zones MW-21 and MW-22 MW-5 and MW-20 Other Suites A and B Background Zone' MW-6, MW- 10 and Other Suites A and B Compliance Zone MW-11 Well IDs shown on attached Figure 2 2 i.e., weekly, monthly, quarterly, annually, other 3 Constituent suite components listed in Table 2 below ° Well used to monitor compliance and for the presence of breakdown/byproducts of the treatment migrating beyond the expected treatment area s Wells used to evaluate in-situ bioremediation progress inside the treatment zone, to gauge effectiveness of ISCO injection in reducing the dissolved petroleum hydrocarbon concentrations, and to monitor potential changes in groundwater geochemistry that could be attributed to the injection of oxidizing agents ° Well used to evaluate migration of pollutants within the treatment zone. The transition well may or may not be within the zone of influence. ' Well used to monitor the background natural changes in groundwater geochemistry in areas unaffectedby oxidant injection. ° To be sampled prior to startup (baseline). ' All sampling conducted following a 3-well volume purge. Table 1 B : Samplings, Frequency (During Periods of No Remediation/Progress or Post- Remediation ) Well ID Frequency Constituent Suite(s) Monitoring Objective MW-9, MW-13, MW-23, MW-24 , EW-1 , VEW-1 Quarterly 4,6 Suites A and B Evaluation of Treatment and VEW-2 MW-2, MW-8, MW-21 Quarterly Suites A and B Evaluation of Treatment and and MW-22 Plume Movement MW-5 and MW-20 Quarterly 4,6 Suites A and B Evaluation of Background Conditions MW-6, MW-10 and Quarterly Suites and B as Evaluation of Adverse MW-11 Migration of Contaminants ' Well IDs shown on attached Figure 4 i.e. , weekly, monthly, quarterly, annually, other 3 Constituent suite components listed in Table 2 ° Wells to be monitored for depth to water, presence of free product, and purge sampled on a quarterly basis for two quarters following the initial span of the four- td-weekly injections to determine if breakdown/byproducts of treatment developed. If results do not indicate any development of breakdown/byproducts from treatment, no additional samples will be collected. All sampling conducted following a 3-well volume purge. ° Should adverse water quality conditions occur due to the injection of oxidants, injections shall cease and those wells showing impacts will be monitored and reported monthly for the injection permit constituents of concern in Suite B as idenfified during the full-scale, until baseline is reached, per Finding 3, page 2, paragraph 2 above Table 2 : Analytical Methods Constituent Method' Maximum Practical z Frequency Quantitation Limit (pg/L) Suite A TPH-g GC/MS 50 As indicated in