Document zoya6DmDXkYwzgz3jkpwjGbYg

(conoco) Interoffice Communication To Restrict Area -Deregulation File From P. L. Fetzer Date June 15, 1976 Subject Calculation of VCM Exposurein Restricted Areas The average data shown in the attached table was determined by the following criteria. 1. Actual loading times during the past three months were obtained from Tom Randolph for both tank car and vinyl ship loadings. 2. Data from the fixed point monitor sheets for CAR-401 points #2, #6, and #10 i.e, T-411A loading pumps, vent recovery unit and check tank transfer pumps respectively, were average for the specific time period. 3. The lab data, CAR-171 #6 point, was obtained for a five hour period, generally 0800 thru 1300 hrs, when the shipment samples would normally have been analyzed. An appropriate time period four hours prior to the end of each ship loading was selected as the analysis time for ship analysis. 4. Vinyl check tanks transfer pump area CAR-401 point 10, was average on a daily basis. P. L. 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