Document 93QO6GB1Eo509DrOEDBBp8Vne

JLa*I aiastMeas AmmsiastliMft CLINTON H- CRANE . PftES'DENT K. C . BROWNELL .vice pr e s i d e n t F\W. ROCKWELL, VICE RESIDENT 4- 20 LEXINGTON AVENUE NEWYORK17.3V.Y. ROBERT L1NDLEY ZIEGFELD. SECRETARY AND TREASURER MANF RED B O WD 1 TCH DIRECTOR OF HEALTH AND SAFETT October 11, 1950 Robert A. Kehoe, H.D., Director Kettering Lab. of Applied Physiology University of Cincinnati College or Medicine Eden Avenue Cincinnati 19, Ohio Dear Bob: This is with reference to the subject ox my letter ox February IP, 1949, addressed to you as a member of the A.P.M.A. Committee on Lead Poisoning, and your prompt and helpful response thereto. You may remember that I told you that the safety of the practice of coating the interiors of steel water storage tanks with the socalled "Type IV" (red lead-phenolic resin) paint, as specified by the Federal Specifications Board and the American Water Works Assoc iation, had been called into question, and that, in view or the half century-old and nearly universal use of red lead paints for this purpose, with no known epidemiological evidence of ill erfects, i felt that data from sound scientific experiments were the only pro per basis for resolution or the matter. I further said that, since no such data had apparently ever been compiled, it was our purpose to instigate experiments to that end, and I asked for your views as to this, which you kindly gave me. It seems obvious that actual field tests involving a tank or tanks painted with the paint in question must afford vastly more conclusive evidence than laboratory experiments of any sort. Espec Ially as the adverse opinion above referred to had emanated from a source in the federal government, it had been our hope to interest a competent scientific agency of that government in carrying out such field tests. Falling in this after several montns* effort, we turned to Dr. H. B. Elkins as a recognized authority in this field ana we now have from him the analysis reports which are summarized in my enclosure. ' He 0 0 1 4 756 Robert A. Rehoe, M.D 2- - October 11, 1950 While further tests of this and other types of lead paint are planned, these results seem quite effectively to dispose or the suggestion of any likely hazard to health in the use of this paint for the purpose in question. If you wish additional information concerning these tests, I hope that you will let me 10 10 ?/. . Sincerely yours, enc. mb/sd 00 -- % LEAD INDUSTRIES ASSOCIATION 420 Lexington Avenue NewYork 17, N. Y. MANF RED BOWDI T CH DIRECTOR OP HEALTH AND SAPETY Jesuits of analyses for load in samples of water irm 185,000-gaXLoa standpipe at Urentha% Mass*.* painted Interiorly with TT-P*-86a, TZ?B X? FAiST^ as reported by Br* H* B* Fdldtns, ^Mef of laboratory* Division of Oecupaticnul Hygiene, Mass* Department of labor and industries* ~ Inopie* lio. T;7 7 B7 f iw s 157 1 77 5 .777 3 71 7 77 8 77 0 FW 10 Date Collected. 5/18/50 d/i/O0 7/17/50 7/18/50 7/10/50 7/24/50 7/21/50 8/3/50 8/21/CO 9/25/50 Source and Status GaOpOi Evaporation Method M jm Water before entry to standpipe Water from standpipe before painting Wash water after painting Wash water after palatini; Wash water after painting Second filling static ono vm < M On line 8 days On line 2i days Ua line one month, 25 days 0*000 0*000 0.000 0.002 O.CD0 0*0v?c 0.000 0*018 0*015 0*000 0*201 0*000 0*000 0.000 0.000 0.001 07 CO 0*000 0*003 l-107Bs The gene*ally accepted safe limit for lead in potable water 's 0*1 sjg*/L* Sr* Elfins estimates the average error in analysis to be 0*002 ng./L* Having satisfied himself as to the greater accuracy of the calcium oxalate method, the evaporation method was not used in analysing sables FW S and PW 10* 10/5/50 K 0014758