CR&D HASKELL LABORATORY LEAD AND LEAD COMPOUNDS: ADDENDUM TO HAZARD DETERMINATION LETTER DATED JULY 10.1989 According to the corporate guidelines for control of carcinogenic, reproductive, developmental, and germ-celt mutagenic risks posed by chemicals made or used within Du Pont, lead and lead compounds were reviewed July 10,1989.

Present wer*i . < - ** bt-** f- The Eagle-Pieher Lead Company The Eegle-Plcher Lead Compter The Lagle-Plchcr Lead Company The Regle-Pieher Lead Conpany International bmeltlng k Refining Conpany National Lead Conpany National Lead Conpany bt.

Haskell Laboratory for Toxicology and Industrial Medicine Compound: LEAD SOIL/LEAD ACETATE Group: I Species: SWINE Strain: YUCATAN MICROSWINE Sex: M Age: 57 days Vehicle: DEIONIZED/BAC Test: LEAD BIOAVAILABLITY Test Day: Mode of Death: SD Date: 06/24/94 Clinical Observations: NAD 06/24/94 11 |ID No. jAn.

FILE NAME Threshold Limit Values TLV DATE 1997 DOC TLV002 DOCUMENT DESCRIPTION Medical Journal Letter to the Editor - How Threshold Limits for Lead Were Established in the 1950s AMERICAN JOURNAL OF INDUSTRIAL MEDICINE 702-703 1997 LETTER TO THE EDITOR How Threshold Limits for Lead Were Established in the 1950s KEY WORDS lead Lead Industries Association American Standards American Industrial Hygiene Association TLN'TLsN's standard setting Association In 1955 Manfied Bowditch Health and Salety Director of the Lead Industries Association LIA arranged to be named Chairman of the group within the American Stan- dards Association ASA concerned with occupational expo- sure limits for lead This was called the Subcommittee on Lead of the Committee on Toxie Dusts and Gases of the ASA The subcommittee recommended sarsing the longaccepted standard of 0.15 mg m to lead and lead compounds in an to 0.2 more for lead sulfide and it was expected that the parent committee would accept the recommendation LIA 1956 The ASA was also useful to the lead industry in setting a sort of baby threshold mit LIA 1956 The minal proposal of the New York City Health Department to requite a poison label on all paints containing any lead whatsoever was ultimately modshed though the establishment at our instance sic of a committee of the American Standards Association which evolved a standard permitting up to one percent of lead in paints used on surfaces which might be chewed by children The LIA report went on to add that " The poison wording was also modified Di John Foulger of DuPont one of the members of the ASA subcommittee on lead later explamed the rationale for the recommendation that up to 1 percent of lead would be safe in paints chewed by mfant children It was based on information from the paint industry that one gallon of paint would cover 500 sq ft and on the assumption that only one coating of paint would be applied to the surface chewed The committee's assumptions were not limited to strictly seien- tific matters W concluded that a child would take in one Correspondence to Barry Castleman 2412 Pickwick Road Baltimore MD 21207-6631 mail bcastle hop lib md us Accepted 6 June 1997 milligram of lead if ate about one and a half to two square inches of pant It was considered also that surely the parent would notice that amount of chewing Foulger 1958 In 1957.

The companies have 20,000 workers in such industries as battery manufacturing, lead smelting, lead chemicals, fabrication using lead, and solder manufacturing.

Lead remaining in empty lead bags accounts for 99% of our lead emissions and more than 75% of the total pounds of the three chemicals emitted from the Aberdeen Plant.

You must take all the appropriate lead-related construction training.

There was a considerable Margin between the price of lead and the price of white lead.

This analysis was based on levels of 350 pg/1 of copper and 1000 pg/1 of lead.

This analysis was based on levels of 350 pg/1 of copper and 1000 pg/1 of lead.

Lead Industries Association, Inc. 295 Madison Avenue New York.

Therefore as a guide to protect the fetus, woman of child bearing capability who might elect to work with lead and its compounds should be advised to avoid adding lead to their normal body burden as measured by blood lead levels.

March 1997 EPA 747-R-97-002 Laboratory Study of Lead-Cleaning Efficacy Executive Summary The United States Environmental Protection Agency (EPA) has recommended the use of trisodium phosphate (TSP) detergent to clean lead-contaminated dust from surfaces, both after residential lead hazard control work to achieve post-abatement clearance standards and in general.

Assuming the neurological findings in these employees are related to exposure to lead, one cannot relate the effects to Specific levels of lead exposure or specific blood lead levels.

MR-9727-001 SAMPLE # 20366 CHEMICAL NAME USED FOR HASKELL LAB'S CENTRAL FILES: (Use in the "MATERIAL TESTED" section) Soils, contaminated with lead NAME TO BE USED IH THE REPORT; H-20366 OTHER CODES: None submitted SUBMITTER'S NOTEBOOK NO.: None submitted SYNONYMS: Lead contaminated soil AEC-3-3 Soil, contaminated with lead CAS REGISTRY NUMBER; None available PURITY: NA (Note: NA was not defined by sponsor) COMPOSITION: 520 ppm lead in soil CONTAMINANTS: NA (Note: NA was not defined by sponsor) PREPARED BY: Paul W.