Document pBeo0y5bE3zk4nY0DbVqQgEpE

IN TER-O FFICE CORRESPONDENCE E t h y l Ga s o l in e Co r po r a t io n B o s t o n Div is io n P a r k S q u a r e B u il d in g Bo st o n , Ma ss. May 15th, 194-2 Dr. R. A. Kehoe College of Medicine University of Cincinnati Eden & Betliesda Avenues Cincinnati, Ohio Dear Doctor Kehoe: He have 'had some correspondence in the past regarding the work being done by the Connecticut State Department of Health in conducting tests on gasoline containers for possible use in hauling drinking water. In your letter of April 8th, 1942, you stated your desire to know mors particularly the methods of analysis employed in determining the lead content of the water taken from the various containers. On May. 7th, I contacted Mr. Almquist, of the State Health De- partiaeni, who his work under the direct supervision of Mr. Harron Scctt, Head of the Department of Sanitary Engineering,. He ad vises me that the lead determination is made by the Dithiozone method, also known as the Colormetric method. According to him, this method was suggested as a tentative method of lead analysis in the latest edition of the publica tion, "Standard. Method of Hater Analysis", printed by the American Public Health Association. When these tests were first run, other methods of tests were used as a check, but this practise has been discarded since the re sults always appeared in substantial agreement. . Mr. Almquist also showed us the latest report on this work iving the results of tests run on a tank belonging to the Hygrade Oil Company, and which had hauled leaded gasolines exclusively. The tank had been cleaned, steamed, chlorinated and rinsed for various periods of time.and the highest lead content developed at any time during the test indicated 0.05 parts per million. . Very truly yours, 'AT/H :.C. to '. Harry ICaley *. 0. 3. Lewis H. A. TAYLOR N 5302