Lead Industries Association, Inc. 292 Madison Avenue New York, N.

The absorption of lead from the lungs is quite efficient.

Lead Industries Association, Inc. 292 Madison Avenue New York, N.

Herron on 6/12-13/74: Personnel VC Process Operator (Jordan) VC Process Operator (Jordan) Lead Pot Feed Man (Clements) Lead Power (Clifton) Cathode Tinner (Hartman) Asbestos Fluffer (Carrier) Date 6/12/74 6/12/74 6/13/74 6/13/74 6/13/74 6/13/74 Conditions Results Collecting VC Samples 5.0 ppm Vinyl Chloride Analyzing VC Samples in laboratory 2.2 ppm Vinyl Chloride Wearing Custom-Comfo Mask 71 pg/M3 Lead Wearing Custom-Comfo Mask 34 pg/M3 Lead Wearing Custom-Comfo Mask 169 pg/M3 Lead Fluffing Asbestos while wearing Dustfoe Mask (was not using new fluffing chamber) 2.3 fibers > 5 pm/ml Threshold limit valves for the above are: Vinyl Chloride Lead, Inorganic Asbestos 50 ppm (Ceiling) 200 |ig/M3 (8-hour TWA) 10 fibers > 5 pm/ml (15 minute Excursion) 50 fiber > 5 pm/ml (15 minute Excursion with Dustfoe Mask) MW:km cc: T.

(SI8) 372-5696 May 27, 1971 Refer to: #19742USA Lead Test Dr.

All homes in Chicago with children under the age of five years be tested for lead. 2.

The absorption of lead from the lungs is quite efficient.

* Lead Industries Association, Inc. v 292 Madison Avenue New York, N.

Lead Products Div.

* Lead Industries Association, Inc. v 292 Madison Avenue New York, N.

The proposed regulations do not make this clear and we have revised them to read: Section 2(C)(3) Childhood Lead Poisoning Lead poisoning as evidenced by a blood level of 80 micrograms ...................

All children in the City of Chicago between the ages of 1 to 5 years be tested for lead poisoning. 4.

C U-c^/2- The lead operatorsrecord resin silo levels every two hours on the silo outage report.

I have enclosed one each of the following reports for your use -- PLMR-3-77 - 'Development of An Air Qualify Value for Lead from Community Studies" PLMR-1-77 - "Critique of the Analytical Methods Section of EPA External Draft of 'Air Quality Criteria for Atmospheric Lead'" PLMR-3-76 - "Trends in Air Lead Concentration" PLMR-2-77 - "Comments on EPA External Draft of Air Qualify Criteria for Atmospheric Lead" I trust you wi'' find this information useful in your work* If there are any questions or farther information which you require in regards to this subject, please feel free to contact me. at the above address.

Lead Products Div.