Document NQK02DdN8g1eJjEgX6Jw3Lgg

PLAJNTffF'S EXHIBIT KRC-461 HAGER LABORATORIES, INC. 11234 E. Caley Avenue Englewood, Colorado 80111 (303) 790-2727 (800) 282-1835 j-a / ^ <L t / c- / / cWi< L(j> REPORT ON SERVICE NUMBER 32633IH April 8, 1988 To: Analysis: Caroline DeYong Southwestern Refinery Corpus Christi, Texas The following samples were submitted for analysis: Two membrane filter samples and two blanks for asbestos count. Method: ASBESTOS (count) The fiber concentration of each filter, sample was determined following NI0SH Method 7400. Wedges from each filter were examined at 400 power using phase contrast microscopy. All fibers longer than five (5) microns with a length-to-width ratio of 3:1 or more were counted as asbestos. < Results: The results are found on Tables 1 and 2. Discussion: The present 0SHA permissible exposure limit (PEL) for asbestos is 0.2 fibers/cc. LT( ) indicates "less than" with the lower limit of quantification shown in parentheses. Analysis for Chemicals Harmful to Mankind IB 001346 SWRf/Asbestos 10179 Page 2, SN 32633IH Southwestern Refinery April 8, 1988 Discussion (cont.) All samples have been corrected for the blank unless otherwise noted. Laboratory data are filed and available upon request. Hager Laboratories Inc. has been AIHA accredited since 1977- If you have any questions, please call customer service Submitted by: //#*'/{? Maria Aleyniko^T" Supervisor MA/sn ?C IB 001347 RWRf/Ashpstnc IfllRD N 32633IH pril 8, 1988 TABLE 1 ample Number 88-29 88-33 Blank Blank Counted Counted (fibers) (fields) Total (fibers) Air Volume Air Concentration (liters) (fibers/cc) 7. 107. LT(4380.) 6. 100. LT(4380. ) 2. 100. LT(4380.) 1 . 103- LT(4380 . ) 893. 133- - - LT(0.005) LT(0.03) - lB 00A348 SWRf/Asbestos 10181 SN 32633IH April 8, 1988 TABLE 2 Sample Number Main (mg) Back-up (mg) Air Volume (liters) Air Concentration aB 001349 SWRf/Asbestos 10182