Document 8RJRnxB2NqZ0LYj59adR9VOMd

conoco Interoffice Communication To A. H. Sather From J. V. Uptain Date February 8, 1978 Subject VCM DOSIMETRY RESULTS FOR JANUARY, 1978 A A total of 14 samples were taken, four (4) of which were discounted because of Laboratory instrument instability problems experienced during analysis. Of the remaining ten (10) results, two (2) were between the action level and the exposure limit. Range, PPM Number % 0.0 - 0.5 0.5 - 1.0 1.0 - 5.0 5.0+ 8 80.0 2 20.0 0 0.0 0 0.0 10 100.0 The four (4) discounted results were: Date Result, PPM Worker Type C ommen t 1/24/78 1.8 Yard Operator The employee unloaded a VCM railcar. No unusual circum- stances were seen. He was wearing a respirator. 1/26/78 1.9 Maint. Helper Employee worked in Dry Blend the entire period, Welding was being done in the area. He did not wear a respirator. 1/27/78 1.8 Vinyl Lead Employee worked in LR control Operator room entire period. There was a D-500 slurry dump valve failure and resulting "vapor release1' during the period, but other indicators make his 8 TWA very unlikely to be as indicated by this sample result. Employee did not wear a respirator. - r-iirTf I-:-i:t: [<li j.|v. ' ' .............................................................................................................. ............................fltonth MWI*+|pit1' -jp - i<..... VAB.0001041341 A. H. Sather February 8, 1978 VCM Dosimetry Results for January, 1978 Page 2 A Date Result, PPM Worker Type Comment 1/30/78 1.1 Vinyl Operations There is no known reason for such Supervisor a result. The employee did not wear a respirator. As stated above, since the Lab analysis time of analysis and due to the lack of ''exposures'1 are discounted as valid. equipment was known to be unstable at credable reasons for the results, the the J. V. Uptain Attachment c: GGD, DEPARTMENT HEADS, DAK, ODS : =i : i n . VAB.0001041342