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^ MEMORANDUM <br /> Date: January 6, 1993 <br /> To: Melody L. Allen, Project Menager <br /> — From: Robert Salisbury, Shff Chemist <br /> Subj: Data Valida4on Review <br /> Mwls Soil Data <br /> City of&verett Proposed North-Fa�t View Park, 03352-021-005 <br /> The dah validation roview of 16 scil samples �od 1 dxontamination blenk collected on December 4 <br /> t6rough 7, 1992,has beea completed. 'Ibe s�mples were�nalyzod for arseaic, barium, cadmium, chromium.lead. <br /> mercury, selmium, silvu,and anc by D&M LabonWries(D&M) lacaced in Petal�ma, Celiforoia. 1Le aaalyses <br /> wero perfotmed using HPA Method 7470(mencury), EPA Met6od 7060(arswic), &PA Method 7740(selemium), � <br /> rnd SPA MUhod 6010 (barimm, cadmium, chromium, I�d, silver, and Lnc) in accordance with SW-846 (Test � <br /> Methods for fivdu�ting Solid Waste,September. 1986). 'Ibe following semples acn associated with laboratory case <br /> number(or accession number) 923530: <br /> — Srmple Number D&M Number <br /> TP-1-1 030624 <br /> � Tp_1_2 030625 <br /> TY-2-1 030626 <br /> Tp_2_2 030627 <br /> Tp_3.t 030628 <br /> TP-3-2 030629 <br /> Tp.d_� 030630 <br /> Tp.q_2 030631 <br /> • SS-1 030632 � <br /> HA-1 030633 <br /> gp_Z 030634 <br /> HA-3 030635 � <br /> HA-3X 030636 <br /> -- DB�B-12492+ 030637 <br /> HA-4 030638 <br /> ' HA-5 030639 <br /> Hp{ 030640 <br /> +' Decontamination blank, associated with HA-4 <br /> - The following comments refer to D&M's perfortnance in roeeting the quality assurance control specifications i <br /> described in SW-846 and in the EPA document "Laboratory Data Validation Functional Guidelines for Evaluating <br /> Inorganic Malyses", Ju1y I988. <br /> 1. Holding Time- Accepteble <br />