Document e7QgXOm5E1aBZgEw0MLGKd9ng

To SEE DISTRIBUTION Location Date: July 29, 1980 Copyja&C t *: v From .J. S. Tobin, M.D. location Wayne Subject BLOOD LEAD ANALYSES Reference As you know, the quality assurance laboratory at Willow Island has for many years done the blood lead analyses for our medical surveillance program. With the discontinuing of lead chromate manufacturing at Willow Island, the laboratory has asked to be relieved of that responsibility. In consultation with Dr. Philip Falk of the Clearing Industrial Clinic in Chicago, we have explored other laboratories. For the past three blood lead samplings we have sent duplicate samples to the Industrial Toxicological Laboratory, at West Allis Memorial Hospital, West Allis, Wisconsin. Dr. Guertin's staff, at Stamford, was kind enough to assist us in comparing techniques and quality control procedures at the two laboratories. We have determined chat they are almost identical. The results of the last two samplings showed very close correlations. Beginning August 1, 1980, we will use the West Allis laboratory exclusive ly for our medical surveillance program. Dr. Falk and I have already agreed to make this transition immediately. The other plants with lead exposures should send future samples to this laboratory: Industrial Toxicology Laboratory West Allis Memorial Hospital West Allis, Wisconsin 53227 using the collection equipment provided by this office. JST:rme DISTRIBUTION Mr. J. C. Capoross Dr. R. M. Clyne Dr. P. Fa Lk Mr. W. A. Fead Mr. H. C. Gaffney Dr. A. T. Guertin Mr. R. W. Hagy Dr. R. J. Leswing Dr. W. Me riwether Dr. J. R. Winburn /#L &ohn S. Tobin. M.D ' CYWI 3-000890 GYjanfAF&fD W c s* FULL-TIME & PART-TIME PHYSICIANS T ALL PLANT ONAGERS Date Location From R. M. Clyne, M.D. Copy to Location Wayne Subiect MEDICAL REMOVAL FROM LEAD EXPOSURE Reference ,fte_ January 22, 1980 W. P. Brown E. W. Cancrall J. C. Caporossi W. A. Fead J. F. Terenzi Your attention is invited to the fact that as of March 1, 1980, the blood lead level at which an employee must be removed from exposure to inorganic lead drops from 80 micrograms per 100 grams of blood to 70 micrograms. This is the first step in a four-year process of reduction of the removal level to 50 micrograms. Accordingly, after March 1, 1980,. it will be necessary to remove from exposure any employee whose blood lead lamml is at or above 70 micrograms. A second blood specimen should batsiitalned on employees so removed within two weeks of your revaluing the results of the first analysis. Repeat aw^^as should be obtained and analyzed at least monthly imtitfcwomnnsecutive samples indicate that the employee's blood lead level' if* at or below 60 micrograae* In preparation for the-more Tt Iagent reposal criteria, it is recommended thair. pmry effort W'*de now to maintain employee blood levels belplW aebsrograaa beginning March 1, UfO*. ^W7 <Sie '* us RMC:ra4 4 80-2 Mart M. Clyne, NA 839 00/ 2-79 CYWI 3-000891 N14665.01 CYANAMfD Memorandum To: H. C. Gaffney Location: From: J. S. Tobin, M.D, location: Wayne Exlension:3024 Subject: BIOLOGICAL MONITORING: BLOOD LEAD DETERMINATIONS Date: July 27, 1978 Reference: Copy to: w. V. Andresen As your request, I have examined our current protocol for blood lead determinations at the Chicago plant. As you know we ere currently scheduling tests at monthly Intervals for employees whose blood lead level Is 0.060 mg/dl or over and at bimonthly Intervals for those under 0.060. * Examination of blood lead levels for 1976, 1977 and 1978 shows that a number of employees have levels consistently In the thirties and low forties. Accordingly, I believe we can prudently modify our program as follows: Blood Lead Level (mg/dl) Interval 0.060 or over 0.045 to 0.059 Under 0.045 Monthly Bimonthly Quarterly We should keep tm wiftd that when QSHA issues the permanent lead standard. It may wall tedtAM&tnt npimmts and we must make additional changes. ^v i ''k 4 i i i - JST:es -* - 2~o 32- - /Tobin, M.O. i \ i 's<V39 ft E V . 7 77 "V:* 7-77 cna 3-000892 N14665.02 Foreran Blood Leads Chicago Plant - 2/23/77 C. Dadfco R. Johnson L. Maye 3. Terzic The blood lead standard we must address ourselves to Is 0.059 maximum. The improvement in the plant ventilation system, the progress in housekeeping, and the enforcement of the plant hygiene rules should assure all employees maintain blood lead levels below the above mentioned standard. Currently there are two men______________________________ above 0.07, and two men4HhR^HHHHBH|PHi^above 0.06. If twenty other employees, with essentially the same exposure, can achieve and maintain much lower blood lead levels, then I can see no reason for anyone to be above 0.06. HCG:ak H. C. Gaffney CONFIDENTIAL INFORMATION REDACTED CYWI 3-000893 N14665.03 C VA .VA Af I D 3/5/76 The cooperation of all personnel is essential if we are to achieve our goal of having all blood lead levels below the .07 level. We are embarking on a campaign now to upgrade all of our existing ventilation and exhaust systems, and to install additional dust collecting units where required. However, the following statistics verify that high blood leads are not a function of lead dust exposure, but rather an effect of sloppy personal hygiene habits. Note that the men working in the litharge shop (the high exposure area) are relatively low on the blood lead scale. No excuse for high blood leads is accepted. 1975 average blood leads: (m) Carite (f) Banasiak (po)Davis (bp)Calvin (f) Perz (g) E. Maye (po)Powers (f) L. Maye (1) Cross (bp) Tate (1) Howard (1) Hodge (l) Martin (j) Stanford (m) Lee (po) Hawkins p-) fZ . ^r***rw*^ "pj^y J HCG:ak H. C. Gaffney CONFIDENTIAL INFORMATION REDACTED 3-000894 N14665.04