Document oeGZQ46jy1Y8EZ85GX4a2Bqd3

(i Befi Laboratories 900 Mountain Avarua Murray HW. Naw Jaraay 07974 Phono (201)582-3000 Hay 27, 1980 Hr. toy Deitchman Hair York Telephone Company 1095 Avenue of the Asiarlcaa Room 2561 Naw York, Naw York 10036 Daar toy: Bare are soma of my thoughts on the asbestos Index: General 11 I believe the number generated should have seas relevance to tha severity of the problem and be stated as such. I propose that Hazard * (Exposure) x (Toxicity). Then all itarns dealing with extent of exposure would he grouped together and likewise for toxicity. Thus, I would con sider friability as part of tha toxicity. 2) Since The ACGIH has proposed different criteria for the various forma of asbestos (the British already have differing standards), I suggest this be included in cal culating toxicity. 31 A brief description such as you have is fine for assessing, but I think all assessors should read a more complete description of all factors like those given id the SPA document, 1 4) Before releasing this index, I think someone should sample a few buildings or areas (*2$) to see what index would be assigned before making recommendations for/against control measures. It would also be useful to have seve ral assessors evaluate the same areas without any interaction to see the range of index values for the same areas. LLA 000780