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7, m C, <br /> STATE OF CALIFORNIA—CALIFORNIA EN"RONA3FTAL PROTECTION AGENCY • PETE WILSON, Gowen <br /> DEPARTMENT OF TOXIC SUBSTANCES CONTROL - <br /> REGION 1 <br /> 10151 CROYDON WAY, SUITE 3 <br /> SACRAMENTO, CA 95827-2106 <br /> K E K O R A K D U K <br /> TO: Jim Pinasco <br /> Waste Management Engineer <br /> Site Mitigation Branch <br /> FROM: Brad Parsons <br /> Senior Hazardoumaterials Specialist <br /> Geological Support Branch <br /> DATE: July 27, 1994 <br /> SUBJECT: TECHNICAL REQUEST TO REVIEW RI/FS WORKPLAN: DDRW TRACY <br /> Activities Requested <br /> Review the Phase II RI/FS Workplan for a consistent approach <br /> with the Department of Toxic Substances Control (Department) <br /> policy and statistics. <br /> Review Activities <br /> Reviewed Appendix A, Field Sampling Plan, and Appendix B, <br /> Quality Assurance Project Plan, of the document titled <br /> Comprehensive Remedial Investigation/Feasibility Study - Phase II <br /> Work Plan prepared by Montgomery Watson and dated June 1994 . <br /> Discussion/Analysis <br /> Field Sampling Plan <br /> Page A. 2-4, Section A.2. 2.4.2: Field audits should be <br /> conducted early in any new field activity to detect critical <br /> flaws with followup audits later. Suggest that this be stated <br /> here and that the auditors be as independent as possible, yet <br /> knowledgeable and thorough. <br /> Page A.3-3, Section A.3 .3 .O. 3 : Will 30' slant drilling be <br /> enough of an angle to arrive at three feet below the sump? <br /> RP.J8 <br /> PIKASCO.LO1/fta16 <br /> A <br /> to <br />