NYC-WTC_000231687

NYC 9/11 Public Portal Document 01/23/2002 15:20 FAX 718 784 4085 @002/003

ATHENICA ENVIRONMENTAL SERVICES INC. 45-09 Greenpoinit Avenue Td (718) 784-7490 Long Island City. N.Y. 11104 Fax (718)784-4085

January 21,2002

Nev/York City Sdiool Construction Authority 30-30 Thomson Avenue Long Island City, NY 11101

Attn; Ms. Marsha Soroka

Re: Rc-occuipancy Letter for Economics H.S 100 Trinity Pl. Manhaltin, NY

NYCSCA LLW # JOB# AES File #01-0613

Dear Ms. Soroka:

The final cleanup at the above referenced school was completed during .laauary IO<!/ 1 of 2002 The Contractor (TRIO) performed the fin;il cleanup in the following areas:

Fuial clean-up • Basement, 1“, 2**, 3"*, 4% 6*, 7*, 8*, 9*, I0'\ 11"* and 12“* floors.

The Q.C ambiei't air samples were collected by Athenica EnvironmentaJ Services, inc., (/ ES) following the clcan-up work in the aforementioned areas and transferred to AES, Inc, Laboratories, via chain-of-custody proc dures. The samples were analyzed via. Transmission Elixtron Microscopy (HEM) in accordance with applicable federal, AUER.*’ , New York State, and New York City rules and regulations.

file results of the analysis of tliese samples indicated airborne concentrations to be less than 1 ) srocrures/oc by 71^ analysis

Based on Q.C. ambient air monitoring results, the final clean-up was completed in accor lance with applicable federal, AI ERA, New York State, and New York City rules and regulations. The cleaned spaces met all appli able criteria for reoccupancy.

Should you have any questions or need additional information, please do not hesitate to cal! i e at (718) 784-7490.

•ely.

Vasilis Bellos Senior Project Vlanager

Cc; Sciioo!

CITY_21MC100_002940604

NYC-WTC_000231687