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Appendix A. Respernsers to Regulatory comments <br /> Draft Waste characterization Work Plan, Site MWSos (SHAD-00) & L08) <br /> 51harpe Army Depot, Lathrop, W lifomia <br /> con <br /> Command Response <br /> alit <br /> CVfteB Commands <br /> rral comments <br /> 1. The Draft work Plan is unclear on The analytical results from the <br /> what will trigger step-outboards Initial groundwater samples will <br /> and collection of additional W evaluated using the action <br /> groundwater samples inaddition to level lined in Tame l to <br /> locations determine the need for et <br /> shownon Figure S. ti st <br /> e decision <br /> rules in section 2.2 suggest It allmendwater sample TCE <br /> additional actions will be considered concentrations from the Initial <br /> if any groundwater samples tight sample locations are <br /> collected from one of the eight lower than the action level <br /> initial sample lord (Table 2), n sampling <br /> concentrations that exceed the will be conducted. <br /> ActionIavel of 5 ugff. Section If ste"Ut sampling is <br /> states one analytical rsessarr (groundwater sample <br /> the behind samples will concentrations re higher <br /> to determine eight (a)ate than the actionlecep, the step <br /> mple lost ample locations; will be <br /> mPIies the Army will do the a nape burned approximately SO to <br /> out borings after reviewing the data 100 feet tram the Initial sample <br /> from the initial phase groundwater lrcrniomwhere TCE <br /> samplin <br /> gPecify what w. good these sedions to <br /> igg onlevel. were alove the <br /> clearly <br /> borings. Section 2.2 oftM1e Work Plan <br /> Also, the Draft Work Plan does not Daily what <br /> explain how the Army plans to ampler <br /> locate the stepouts it they are and how thesepaut sample <br /> triggered from the results collected locations will be determined. <br /> train the eight Initial sample <br /> locations shown on Figure <br /> the Draft Work Plan to specify how <br /> Has will acor. L <br /> 2. Add a <br /> rubleconcreteproviding rale and Table 2 has been added to <br /> sampling objectfues for each premium the <br /> proposed M location shown on sampling objectt location for each <br /> ure S. Preferred OPT location shown in <br /> Figure 5. <br /> Page 2of5 <br />