Document mbBGbmJ3Yb8qV50o8wZXwKbdd

October 28, 1991 Ms. Barbara J. Pope Southwestern Refining Company, P.0. Box 9217 Corpus Christi, Texas 78469 Inc. Dear Ms. Pope: Enclosed is written confirmation of the analytical results for the (2) bulk samples delivered to our lab on Monday, October 28, 1991. The sample analyses were performed at our lab with a Nikon LabophotPol microscope. Standard oil immersion and optical staining techniques were used for asbestos identification. The Interim Method for the Determination of Asbestos in Bulk Samples (40 CFR Part 763, Appendix A, Subpart F) was used. Envirotest, Inc. is a National Institute of Standards and Technology NVLAP-accredited laboratory (#1595) for asbestos analysis. The following analytical results pertain only to the samples analyzed. Envirotest, Inc. assumes no responsibility for whether the samples accurately represent the material in question nor for any subsequent use or interpretation of these analytical results. If you have any questions regarding the sample analyses, please call. We appreciate the opportunity to be of service to you. Sinnerelv. Chief Executive Officer Envirotest, Inc. SCW:111 10400 WESTOFFICE DRIVE, #110, HOUSTON, TX 77042 713-782-4101 IB 003429 SWRf/Asbestos 1978 Envirotest, Inc. Laboratory Bulk Sample Analysis Report 3 1B 003430 3 &5 N v' "S 7) * v2 m Q s I i 1 i! IS 1 1 * & 2 =(A3 2i S5 5 SWRf/Asbestos 1979 10400 W ESTOFFICE D R IVE, SUITE 110, HOUSTON, TEXAS 77042 713/782-4101 INSTRUCTIONS: Originator attaches Part 2 to laboratory results and forwards to Medical Services. 1.D7SAMPLE NO. 11933 INDUSTRIAL HYGIENE SURVEY DATA - AIR MONITORING KM--4293-A WO^RKTK\ LOCATI ION __ -j y Si? pl6yEeEe N' UMBER senvr6S Lab Sample .Number I.D. Number Time On < a Time OH 0z Total Time (min.) 1 %M Flow Rate (LPM) Sample Media Volume (Liters) Net Sample Wt. i. 2. /'/hsr'r/a ^5 3. /i/Ze/Zo^j 4. 77/7 a ;c. --`UiS ~7uZ J-31 /( TEMPERATURE ..... RELATIVE HUMIDITY BAROMETRIC PRESSURE! ______ / AIR VELOCITY ' f % "Hg fpm mph PUMP MANUFACTURER/5.N. z go PRE FLOW RATE <o sg POST FLOW RATE Sat DIFFERENCE FLOW <v 9/7 77 TOTAL TIME 25~ ~ JCfZ 7'2*Z TOTAL VOLUME SAMPLE ANALYSIS | for medical services use ONLYI| LABORATORY RESULTS || 5. 6. 1. 2. SUBSTANCE TWA (Time) T8W(hrA) UNITS AUTHORITY STND. NO. SEVERITY ANALYTICAL METHOD 3. 4. 5. 6. [ LABORATORY USED As,\s-r . IWORK ACTTVmES. OPERATION. LOCATION. VENTILATION. CONTROLS) ^ __?/*/// /I* ~-- /stSs'<J- _*-?Q, sir ,j/JyS /l fss4t*r-_______*r. a*r<t/p~- A //& y -_~______ <//u->*>L-r -/ *7//77 5fC& a A AjraA'r- T' ~//>l>>_\ BLANKS (No.) /r' ~~7 2l REVIEWED BY BtWCS (No.) SWRf/Asbestos 1980 IB 003431