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TABLE 1 Page 3 of 4 <br /> SAMPLE AND ANALYTICAL FREQUENCY REDUCTIONS <br /> FORMER SHELL SERVICE STATION <br /> 2575 COUNTRY CLUB BOULEVARD <br /> STOCKTON, CALIFORNIA <br /> Current Proposed <br /> Well Frequency Current Analysis Frequency Proposed Analysis Comments <br /> MW-16 Quarterly TPHg, BTEX, 5 Oxys,& Ethanol Annual MTBE & TBA No history of TPHg or BTEX. <br /> MTBE mostly below MCL. No <br /> TBA. / <br /> MW-17 Quarterly TPHg, BTEX, 5 Oxys,& Ethanol Semi-Annual TPHg, BTEX, & 5 Oxys Relatively stable TPHg/BTEX. <br /> History of MTBE, TBA and TAME <br /> MW-18 Quarterly TPHg, BTEX, 5 Oxys,& Ethanol Quarterly TPHg, BTEX, & 5 Oxys Source area well and pending ISCO <br /> remediation warrants quarterly <br /> monitoring. n <br /> RW-lA Quarterly TPHg, BTEX, 5 Oxys,& Methanol Quarterly TPHg, BTEX, & 5 Oxys Source area well and pending ISCO 4 <br /> remediation warrants quarterly 1 <br /> monitoring. <br /> i <br /> CalTrans Quarterly TPHg, BTEX, & MTBE Gan, Apr, Annual TPHg, BTEX, & 5 Oxys Well is typically clean with only <br /> Oct), TPHg, BTEX, & 5 Oxys Gul) sporatic low level detections of <br /> toluene or xylenes. N <br /> Foster (2472) Annual 5 Oxys Annual 5 Oxys No change <br /> Boardman (2452) Quarterly MTBE Gan, Apr, Oct), 5 Oxys Gul) Quarterly MTBE & TBA Gan, Apr, Oct), No change, except adding TBA <br /> 5 Oxys Gul) <br /> I <br /> 24OM3 (1o) <br />