Document 2jz6Qeo5vozb0zy4qLw3bL4Jr

CO JUL j. ' j JOHN R. ENGLEHORN, PRESIDENT KENNETH W. GREEN, VICE PRESIDENT SIMON Q. STRAUSS, VICK PRESIDENT WARREN S. TRASK, VICE PRESIDENT JOHN L. KIMBERLEY EXECUTIVE VICE PRESIDENT 0AV10 M. BORC1NA SECRETARY ANO TREASURER AREA CODE ZtZ OR 9.6020 j>, &ON <3. POWUKR director or health ano ar*ty July 14, 1566 Mr. John R. Englehorn, Vice President St. Joseph Lead Company 250 Park Avenue New York, N. Y. 10017 Dear John: Re: Air Analyses for Lead In making outside air analyses for lead it is best to use the methods that have been implicitly sanctioned by the U. S. Public Health Service and National Air Sampling Networks. In this way our results will be nearly comparable. I am enclosing for you a copy of the reprint on the PHS analytical method, plus copies of specification- sheets for two types of high volume air sampling equipment. Either of these-pieces of equipment is designed to run continuously 24 hours a day to obtain the type of sample necessary. If your people can make arrangements to obtain one of these samplers and need further in~ formation about it, I will be glad to help you.* Let me point out here that omymain concern at this ' time is to obtain _some 24 hour air sampling data at locations on ... .p "plant 'boundaries of plants using lead./ I wouldjoot want to have /\'' j "this data sent to menecessarily, but I "would-like to..haye,,knoii" { j 4 ledge' of~its existence so than in can be mentioned discretely to N J "those industrial members of the Pennsylvania Air Pollution Control__ Commission. I think you know what I mean. Very truly yours. Don G. Fowler DGF: jb Enc. (PHS Method) (Specification Sheets) Zook Ahead with Lead OR4701241