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Mr. Ross Atkinson <br /> Match 30, 2001 <br /> Page 8 <br /> ■ Analytical methods -,*.equired to assess appropriateness and acceptability of <br /> analytical method used; <br /> a Detection limits-required to assess the lower limit of parameter identification; <br /> ■ Holding tirnes, and dates of extraction, analysis and preservation -required to <br /> assess whether the samples were extracted and analyzed within the holding <br /> time required;and <br /> Laboratory QA/QC ptoccdutes - required to assess analytical accuracy and <br /> sample integrity. Spikes,duplicates,method blanks,and surrogates for each <br /> analytical batch are to be analyzed by the laboratory at appropriate frequencies. <br /> Analytical data may be qualified based on data verification reviews. Quaiiftets will be <br /> consistent with the applicable U.S. EPA functional guidelines and will be used to provide <br /> data users with an estimate of the level of certainty associated with the result"flagged". <br /> Reporting <br /> Following receipt of the analytical results,a report will be prepared documenting the <br /> sample collection activities and presenting the analytical results. This information, along <br /> with the analytical results of the stockpile sampling,will then be evaluated and compared <br /> to the appropriate regulatory csiteaa to evaluate if the waste material on-site has <br /> unlpacted groundwater. <br /> We look forward to the RWQCB's approval of this work. If you have comments or need <br /> additional information, please contact Mr.Peter Moore of MonietLifetilc at(909) 796-8324, <br /> extension 207, or at his voice mail number at(800) 27¢6505 extension 1712. <br /> Very truly yours, <br /> BROWN AND CA-DWELL <br /> Linda Conlan, RG <br /> Principal Geologist <br /> Sr. Project Manager <br /> Attachments <br /> cc: Peter Moore, MonierLifctile, LLC <br /> Kama Harrigfeld,Law Offices of Herum Crabtree <br /> PAwp\1obe\21J587\I0Z253 Gtvv,d ita XVP.doc <br /> EVV-� 810/600 d ZZl-1 OPUVIV96 113MOlVO ONV NM0d9-moad me00: l1 100Z-0E-add <br />