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ROY F. WESTON, INC. <br /> STOCKTON ANALYTICAL LABORATORY <br /> INORGANICS CASE NARRATIVE <br /> Client: PRECISION IND. <br /> RFW #: 89095036 <br /> W.O. #: 5481-01-01-0000 <br /> 1. All required holding times were meta <br /> 2 . All method blanks were analyzed below detection limits. <br /> 3 . All LCS (blank spike) recoveries were within control limits. <br /> 4 . Matrix spike recoveries for Silver, Aluminum, Iron and <br /> Manganese were outside of the 75%-125% control windows <br /> established by the USEPA-CLP. This may be due to matrix <br /> interferences present in the sample matrix. <br /> 5. The following data qualifiers are used in the enclosed <br /> report: <br /> U - Indicates that the sample was analyzed for but not <br /> detected. <br /> 6. Methodology unless otherwise indicated follows the USEPA-CLP <br /> SOW-787 for metals analysis; Methods for Chemical Analysis of <br /> Water and Wastes for conventional water analyses; and SW-846 <br /> for nonmetallic soil parameters. <br /> 4 <br /> Date: Approved:;� r%�(�.tv 1V'6,<.c� <br /> !'c,,C Leo E. O'Shea <br /> Inorgan' c Section Mgr. <br /> Stockton Laboratory <br /> 1 <br />