Document 1Do9DeZD3MnL9N0bn2nYoMKd

\tiOnal ccMTen ro* ano industrial health _ EAST CENTRAL PARAWAY ONCIHNATI. OHIO t DEPARTMENT OF HEALTH. EDUCATION. AND WELFARE PUBLIC HEALTH SCRVICE * *' REFER TO: December PLAINTIFF'S .! | EXHIBIT ASA-94 ;1 7, 1967 Johns-Manville Company 22 East 40th Street New York, New York 10016 (* ' Gentlemen: We have had an inquiry from .a local health officer about the carcinogenic effect of asbestos from A-C pipe in drinking water. We will decide about the effects of ingested asbestos, but would- like .to know if you have any data about the amount of asbestos that might occur in drinking water. How much is introduced during pipe repairs and tapping? Does solution of the calcium out of the cement into the water release asbestos fiber? Do you know anything about a report "-that near Memphis, Tennessee, there was a pe riod in one locality where the pH in the water was 10 or 11 and this resulted in a solution in the cement compon ent of the pipes to such an extent that the water became milky-" that we have been asked about. I will appreciate your comments on thj.is problem. Leland J. McCabe Chief, Disease Studies Water Supply and Sea Resources Program r"v. i.:::` I*. i rv: : r ; i. i r V-> v: - . HER 0001184 r \'x-