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MONITORING AND REPORTING PROGRAM ORDER NO. R5-2008-0149-XXX 3 STALLWORTH AUTO SALES SAN JOAQUIN COUNTY provided in those technical or monitoring program reports, is guilty of a misdemeanor, may be civilly liable in accordance with subdivision (d)... (d)(1) Civil liability may be administratively imposed by a regional board in accordance with Article 2.5 (commencing with Section 13323) of Chapter 5 for a violation of subdivision (c) in an amount which shall not exceed five thousand dollars ($5,000) for each day in which the violation occurs. It is Hereby Ordered that the Discharger shall comply with the following Monitoring and Reporting Program (MRP) requirements: GENERAL REQUIREMENTS 1. All samples should be representative of the volume and nature of the discharge or matrix of material sampled. The time, date, and location of each grab sample shall be recorded on the legal chain of custody form. GROUNDWATER MONITORING 2. As shown on the attached Figure 2, there are fourteen (14) existing groundwater monitoring wells (MW-1A, MW-113, MW-1C, MW-1D and MW-2 through MW-11) at the site. The groundwater monitoring and reporting program (MRP) for the groundwater monitoring wells and any groundwater monitoring wells installed subsequent to the issuance of this MRP, shall follow the schedule below. Groundwater monitoring wells with free-phase petroleum product or visible sheen shall be monitored, at a minimum, for product thickness and depth- to-water (DTW). Sample collection and analysis shall follow standard Environmental Protection Agency (EPA) protocol. For the purposes of the proposed ISCO injection study, the wells have been divided and identified as background wells (MW-2 and MW-9), treatment zone wells (also referred to as performance indicator wells; MW-1A, MW-8), transition zone wells (MW-6 and MW-7), and compliance zone wells (MW-10). All other wells are either cross-gradient or are discretely- screened wells monitoring water quality and occurrence in deeper portions of the saturated zone beneath the site; therefore, these wells will not be used as an ISCO injection study observation point, but will continue to be monitored/sampled as part of the ongoing semi- annual groundwater monitoring program. The groundwater monitoring wells shall be sampled according to the schedule in Tables 1A and 1 B and the samples analyzed by the methods in Table 2, as follows: Table 1A: Samplings Frequency (During ISCO Pilot-Scale Testing) Well ID Frequency Constituent Suite(s) Monitoring Objective MW-1A,MW-8 Other8 Suites A and B Treatment Zones MW-6, MW-7 Other" Suites A and B Transition Zone Well IDs shown on attached Figure 2 2 i.e.,weekly, monthly,quarterly,annually, other