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FF <br /> ROY F. WESTON, INC. <br /> STOCKTON ANALYTICAL LABORATORY <br /> P <br /> w. ORGANICS CASE NARRATIVE <br /> ! a <br /> Client: LAURA SCUDDERS <br /> RFW #: 90015047 <br /> 1 + W.O. 1: 5357-03-01-0000 <br /> FRACTION: EXTRACTABLE PETROLEUM HYDROCARBONS BY MOD. 8015 <br /> s_r <br /> 1. This set of samples consisted of 1 water and. 7 soil samples <br /> collected on 01/24/90. <br /> 2. The samples were extracted on 01/24/90. <br /> 3. These samples were analyzed an 01/25/90, 01/26/90 and <br /> 01/30/90. <br /> 4. All required holding times for these samples were met. <br /> 5. All tuning and calibration criteria were met for all samples. :, <br /> 6. All blanks analyzed were below allowable limits of <br /> cantami.nation as set forth in the EPA Ci,P SOW. <br /> 7. Of the 4 matrix blank spike recoveries, 1 was outside of <br /> QC limits. Samples not meeting QC limits were PBLK 905E0025- <br /> mB1 matrix spike duplicate. <br /> 8. of the 2 matrix and blank spike RPD's, 1 was outside <br /> -- QC limits. Samples not meeting QC limits were PBLK 90SE0025- <br /> MB1 matrix spike duplicate. <br /> 9. Law levels of contamination were found in all samples, <br /> Y including solvent blanks. It apparently came from instrument <br /> contamination. <br /> 1 <br />