Document 15bzdkZ1rOaz4rKNgmeVO6Vm

/. ) continental oil comp a-*4 ml i o o*v?t,on<T ocntraiaT ! i^1' "wC" *'t`:T CC.>-ic:;j7Ut. /NC ANALYTICAL RESEARCH SECTIONi RESEARCH SERVICES DIVISION c? ---- cl Clz3' 1C TECr-IN ! CAL SERVICE REPORT NO. , ._ 667-74-802-0 November 4, 1974 /Jr\ ictf. Uv iootesv i*ouit .1 // } ijV ] to: e- urMy TO: Dr. Flynt Kennedy O JUSJ fCT; MANU7ACTURING CHEMISTS ASSOCIATION (MCA) VINYL CHLORIDE MONOMER (VCM) SUB-TASK GROUP MEETING On 1 November 1974, I represented you at the meeting of the Industrial Hygiene 'and* Monitoring Sub-Task Group of the Technical Task Group on Vinyl Chloride Research in the MCA offices in Washington, D. C. In attendance were the following: 1. Richard Henderson, Olin (leader) 2. 2. G. Bell, Jr., PPG 3. L. B. Crider, BFG 4. R. E. Laramy, CONOCO (for F. Kennedy) ) 5. K. D. Johnson, MCA The objectives of the meeting were to review the sampling, monitoring and analytical requirements of the permanent standard for vinyl chloride and to discuss means of compliance. The meeting convened at 1000 hours, and the first item of discussion vas to determineilif the confidence limits expressed in the standard applied strictly to the analytical portion, the sampling portion or a combination of both/ Dr. Johnson (MCA) was of the opinion.chat the standard applied to both the analytical and monitoring. However, the.consensus of opinion among the other members was chat it applied strictly to the analytical method, the monitoring being covered in the preamble as any method statistically accurate (whacever-thac means L). The report ve had submitted on air-bag-sampling precision was next discussed. Henderson brought the report with him but had not circulated it to the ocher members. They were quite interested end obtained copies. Crider (BFG) had just finished a project on eval uation of charcoal adsorption of VCM with subsequent desorption with CS2. He stated chat the method could be used with i4X accuracy. However, he vas vague as to what levels were determined and as to what this tZ meant. The project had just been com pleted in his labs, and he promised to sail me a copy. He also stated that this work was done at their Research Center and he very much doubted chat such accuracy or precision could be obtained in their plant laboratories. In fact, he vas opposed to advocating this method for plant control. They are also working on a method of charcoal adsorption of VCM with subsequent elution with heat directly into a gas chromatogTaph. Preliminary results look very good. He is using the heat desorption apparatus manufactured by Beadix. They have also designed one of their own primarily because acquisition of the Bendlx units has a delay of between three and six months. This may prove to be a useful technique to obtain eight-hour TWA's. JO DEPOSITION . EXHIBIT o ; *4 VVC 000005856 JO JO BFG53798 t Technical Service Report No. 467-74-302-0 Page 2 Some discussion was held on the statement in the standard, "... that methods meeting the accuracy requirements are available in the.NIOSH Manual of Analytical Methods." I had a copy of this method with me and it states that the accuracy and precision are unknown. This.hardly seems an acceptable method. Fixed-point-continuous monitors were next discussed. Both PPG and BFG stated that they obtain no correlation betveen fixed-point and personal monitors. However, BFG is using total hydrocarbon analyzers and only six-point monitors. PPG is using chromatographic detectors, but Bell was vague as to how many points were being monitored. In view of Dow's finding, i.e. good correlation between the two, I con clude that the data from both BFG and PPG are not inclusive enough. My opinion is chat with our current program, continuous monitors will Indeed replace personal monitors with perhaps the exception of maintenance personnel. A general discussion was then held on what each company was doing with regard to ' monitoring and what changes, if any, were anticipated to conform to the standard as of 1 January 1975. The consensus was chat each company is doing monitoring in its own way and needs to do additional analytical work to confirm if it can meet the proposed precision requirements. It appeared ve had done more work on precision chan any of those represented, but we were the only ones using air bags. There seems to be great reluctance to the concept of veering an air bag. Why I do not know. A program of round-robin testing was proposed by Henderson, but the others felt this premature since no two companies aTe analyzing or monitoring in the same way. Instead it was decided to wait jand see how OSHA plans to police the standard and adjust our monitoring accordingly. Crider (BFG) stated that OSHA is supposed to issue their plan by mid November and suggested each company In the committee contact its regional OSHA office to obtain a copy. The final item of business was that Henderson wishes to relinquish his job as chairman of the committee. Johnson suggested he go through Torkelson to accomplish this. No time was sat for the next meeting; this was left up to the chairman to call a meeting when he felt it necessary. It was somewhat gratifying to find out that the other companies represented are also confused as to the intent of the standard and how to go about complying with it. I feel CONOCO is as "on ton" of the situation as those other companies represented. APPROVED: 4-7^ Research Group Leader Separations Analysis Group Director Analytical Research Section BV Copies to: DBB-G? VVC 000005857 BFG53799 U BFG53800