I have been asked by the Lead Industries Association to comment on the proposed EPA Ambient Air Quality Lead Standard.

The present version of this criterion, in relation to inorganic compounds of lead, has it that an individual workasn is in no danger of incurring lead intoxication so long as the concentration of lead in his blood does not reach the level of SO raicrograras of lead per 100 grams.

7 4 The blood lead "thresholds" for nervous system effects are somewhat higher, a3 noted in the Air Quality Criteria for Lead document.

I have been asked by the Lead Industries Association to comment on the proposed EPA Ambient Air Quality Lead Standard.

Upon information and belief, the operation of the plant included, but was not limited to the manufacture, refinement and/ or use of white lead, red lead, lithange, sugar of lead, arsenate of lead, lead chronate, lead sulphate, lead nitrate, fluosilicate. 11.

K.: Lead poisoning.

against absorbing lead.

Schoeppel L&tionai Lead Company 7?

: Company, Lead Scfiri-ij. leper tseat.

Executive Vice President LEAD INDUSTRIES ASSOCIATION.

It does occur occa sionally from exposure to tetraethyl lead or lead fumes.

Lead Wool for Calking - Revised data for memo on lead wool for calking. 4.

Lead poisoning is cumulative.

Ventilator at left is completely lead coated inside and out.

ITall service cabinet showing lead waste and lead trap discharging directly into drain in pipe shaft. 4'oorhies.