SITE INFORMATION AND CORRESPONDENCE FILE 2

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MONITORING AND REPORTING PROGRAM ORDER NO. R5-2011-XXX a FERNANDO'S-STOCKTON SAN JOAQUIN COUNTY Table 1A: Samplings Frequency [During 180-Day (24 Week) 03 Pilot Testing] Well ID Frequenc Constituent Suite(s) Monitoring Ob'ective MW-8A& MW-9A Every 2 Monthsa Suites A and B Background' MW-1, MW-5A, Every 2 Monthsa Suites A and B Treatment Zone MW-10 MW-2A&MW-3A Every 2 Monthsa Suites A and B Transition Zone MW-6B &MW-76 Every 2 Monthsa Suites A and B Compliance ' Well IDs shown on attached Figure 2 1 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 gauge s Wells dissolved topetroleum hydrocarbon concentrations,ations,ion r and to monitor potential ess inside the tchangesoin groundwater' Dinjection geochemlstry thatcould be attributed to the injection of oxidizing agents 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. 7 Well used to monitor the background natural changes in groundwater geochemistry in areas unaffected by oxidant injection. a To be sampled prior to startup(baseline),during weeks 8 and 16 of the testing,and following completion of the testing(post-test). ° All sampling conducted following a 3-well volume purge. Table 113: Sampling6' T Frequency (During Periods of No Remediation/Post- Remediation) Well ID1 Fre uenc 2 Constituent Suite s)3 MonitoringOb'ective MW-1, MW-2A/B, MW- 3A/B, MW-a(A/B/C/E), MW-5(A-E), a NA MW-6(A/B/C/D), Semi-Annually Suite A MW-7A, MW-8A, MW-9A, MW-10 MW-7(B-D), MW-8(B-D), Annually5 Suite A NA MW-9(B-D) ' Well IDs shown on attached Figure 2 2 i.e.,weekly,monthly,quarterly,annually,other Constituent suite components listed in Table 2 ° Wells to be monitored for depth to water, presence of free product, and purge sampled on a semi-annual basis during the 2"° and 4" quarters of each calendar year. Wells to be monitored for depth to water, presence of free product, and purge sampled on a annual basis during the 2" quarter of every calendar year 9 All sampling conducted following a 3-well volume purge. 7 Should adverse water quality conditions occur due to the injection of oxidants, then those wells showing impacts will be monitored and reported quarterly for the injection permit constituents of concern in Suite B as identified during the pilot study until baseline is reached, per Finding 3,page 2,paragraph 2 above.