Document 0gQJ0bQKRxnNay7gpQQqKmLgJ

AR226-2015 CC; A. S. BERG, 0-12022-3 DllPONT PO U PER S OCTOBER 24 f.'* ' TO: A. J. PLAYT1S, WASHINGTON WORKS mumM. G. McCLUSKY, WASHINGTON WORKS ; Wa s h i n g t o n - / FROM: W. P. ANDERSON, JR, C-8 WORKPLACE EXPOSURE EVALUATION I have analyzed the air monitoring data, supplied by Mike McClusky for ten job assignments at Washington Works, using LOGAN where appropriate. None of the 82 personal samples taken were above the 0.59 moles/billion expo sure limit* (0.01 mg/m ). Three of the ten assignments require at least one more sample to assure that we are meeting our corporate objective of a maximum risk of expo sure above the Exposure Limit ^ L ) of 5%. These are: * FEP Polykettle Operator (PERS IBPA) a "Teflon" Polykettle Operator (PERS 08PF) Polydispersion Operator (PERS 08PH) The other seven assignments meet this criteria. They are listed below with recommended resampling schedule to assure continued compliance. ASSIGNMENT CODE SAMPLE FREQUENCY 1) Copolymer Pack-Out 2) Warehouse & Materials Handler 3) "Teflon" Autoclave Operator 4) Copolymer Extrusion Operator 5) FEP Wet Finishing Operator 6) Environmental Control Operator 7) C-8 Drier Recovery Operator PERS 18PD PERS 08PD PERS 08PE PERS 18P8 PERS 18PC PERS 08PI PERS 08PM One control/year No further sampling required One control/year No further sampling required No further sampling required One control/year No further sampling required The test data are attached. *The pi ant ..is apparently operating with a limit of 0,56 ppb versus the AEL of 0.01 mg/mJ . According to my calculation using 414 as the molecular weight for C-8, the limit should be 0.59. Tony Playtis by copy of this letter should check to confirm. RJZ004534 EID078445