Cover letter enclosing air quality reports, Trinity Place, Jan 2002

NYC-WTC_000095103 ENVIR CONSULT. RONKONKOMA, PHONE: (631)5803191 AREA: FACSIMILE: (631) S803 1 935 ° ENVIROHEALTH.ORG LAP # 1 1681 AP #20053 1-0 OSCIENCE a ANTS, INC, SE MITHTOWN AVENUE New York 11'779 _TEM AIR SAMPLE RESULTS | SAMPLE DATE: SAMPLER: CUSTODY #: RECEIVED DATE: ” September 24, 200! September 25, 2001 Ambient. B. Gallagher 5-05-07 i : i Sample #! _ Sample Location Start | End | Run Time | Flow Ratel Volume | Filter Conc. | Sensitivity! Air Conc. minutes | Avg. Liters Sémm2 Sé&c _ ae TEM A6_ Room 806 by offset press TEM A7 {Room 8&0 15:28 } 18:44 196 3 1764 0.0 0.0027 —2, 15:30 3 18:35 | 185 8.5 1573 0.0 6.0031 } TEM A8 | Room 80: i iS by front door 15:33 | 18:40 | 187 15 | 1403 0.0 0.0035 ; TEMAS | Haltw i TEM A10! By s ay by men’s room 15:36} 18:35 179 3 16h 0.8 0.003 _| <Sensitivity | 15:38 | 18:58} 197 85 | 1674 fn ave 9.9 | come , northwest corner of office 16:20 | 26:40 | 280 $ ..4{ 1400 0.9 |. 0.0035 _| <Sensitivity epee | f 1 i ; Analyzed by: Saraples were analyzed Diffraction (SAED), and El Concentration on nea filter the effective The data pertaiain; The aic filter concentration accuracy of the filter endorsement of The sausples collected action is considered cornpl A result of zero structures Cla? HM bof Cate Analyzed: F26 a using Philips 400T Transmission Electron Microscope. Asbestos identification is determined by the momphology, visual Selected Area Electron lemental Analysis using an Energy Dispersive X-ray Analyzer (EDAX). ter is calculsted by taking the number of asbestos structures and dividing by the area analyzed. Air concentration is calculated by multiplying . (EPA) by the filtce concentration and then dividing by the volume of air collected in cubic centimeters {cc}. these calculations can be found on the Asbestas Count Shect. oY VEAP or ay a ot Government. SuAsheatos structures.co~cubic centimeters, mm=millimeter <= lege than, Flow Rato in liters per minute relates only to air fiber content. When samples are submitted by an outside agency for analysis, Envieoscience. can only guarantes the filter concentration. This report may not be reproduced without the express permission of Eovirosclence, This report can not be used to claim the response action area demonstrated a filter concentration of acbestos less than seventy structures per square millimeter. This response ete according to EPA 40 CEFR 763. per square millimeter is only applicable to the area analyzed. Test resulis only reflect conditions at the time samples were taken. 83/28/2221 16:14 63158983195 ENVIROSCIENCECNSLTAN PAGE 26 NYC 9/11 Public Portal Document