Air sampling results for lead, NYC Board of Education school,

NYC 9/11 Public Portal Document

104 East 25th St

AA New York. New York 10010 www.atc-enviro.com 212.353.8280 Fax 212.353.8306 ASSOCIATES INC.

March 4, 2002

Mr. Bernard P. Orlan Director, Environmental Health and Safety New York City Board of Education 28-11 Queens Plaza North Long Island City, NY 11101

Re: Air Sampling for Lead Stuyvesant High School ATC Project No. 15-19125-0246

Dear Mr. Orlan:

ATC Associates, Inc. (ATC) is pleased to provide this report of the results of air samples for lead collected on March 1, 2002, at the referenced school. The New York City Board of Education (BOE) requested this sampling to determine ambient air lead concentrations inside and outside the school.

Scope of Work

ATC collected ten (10) samples for metals at specified locations. Samples were collected for twelve (12) hours using 37 mm mixed cellulose ester filters connected to electric sampling pumps at a flow rate of 10 liters per minute. Pumps were calibrated before and after each sampling period. All ten (10) samples were collected inside the building. Two (2) blanks sample were also submitted. The samples were analyzed by ATC’s American Industrial Hygiene Association- accredited laboratory in New York City. Analysis was performed by NIOSH Method 7082. A copy of the laboratory report is attached.

The sampling locations were as follows: • P'Floor Lobby; • 2"'’Floor Hallway; • 3"“ Floor Hallway; • 4* Floor Hallway by Elevator; • . s'*" Floor Hallway by Classroom 521 • 6* Floor Hallway • 7* Floor Hallway • 8“" Floor Hallway by Classroom 815 • 9® Floor Hallway by Classroom 921 • 10* Floor Hallway by the Elevator

CONFIDENTIAL, CITY_21MC100_003432840 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000175757