Document babm9VzvkR9MmwG3dOe0MyvR3

ABD00306594 (conoco) A Interoffice Communication To : A. H. Sather From : J. V. Uptain Date : March 20, I98I Subject VCM/LEAD DOSIMETRY - SAMPLING FREQUENCIES The results of 1980 lead and VCM dosimetry are summarized in Tables 1 & II (Attached). Based on these results and the probable exposure potentials of the jobs involved, I recommend the sampling scheme shown in Table III be adopted. The following changes in sampling frequencies are involved: VCM 1. I & E Maintenance Supervisor Change from yearly to monthly basis because of upper confidence limits (UCL) of results and nature of work. 2. Vinyl Lead Operators & Maintenance Utility Techs Change from monthly basis to yearly, based on results and nature of work. 3. Plant Manager & Plant Superintendent Add to monitoring list on yearly basis due to nature of work. LEAD 1. Dry Blend Utilities & Compound Operators Change from yearly to monthly basis because of results. Compound Operators to be re-evaluated after June, 1981'. 2. Compound Utility Change from yearly to quarterly basis because of results, expecially UCL fJerald V. Uptain Safety Supervisor^ c: CLM, CRM, Department Heads