Air quality test reports cover letter, Jan 2002

NYC-WTC_000105134 ENVIROSCIENCE CONSULT. 50 SMITHTOWN AVENUE RONKONKOMA, PHONE: (631) 580-3191 FACSIMLE: G3 13580-3195 WWW.ENVIROHEACLTH.ORG NVLAP #2005310 TEM AIR SAMPLE RESULTS ANTS, INC. {PROJECT NAME: NEw York 11779 AREA: CLIENT 4: LAP # 11631 Tech Clean 65 Broadway 16th Floor 00-10233 SAMPLE DATE: RECEIVED DATE: September 21, 2001 SAMPLER: CUSTODY #: Sepember 21, 2001 B. Gallagher Ambieat 8-04-02 _Sample # Start Sample Location TEM-A6 | East ead Liters End_ 7 Run Time | Flow Rate! Volume | Filter Cone. | Sensitivity Ais Conc. Siom2 Slee Ske ffices 00:40 03:05 145 10 1450 0.0 0.0034 | Sensitivity | _-TEM-AT_| Kitchenette | TEM-AB | Cubicules 00:40. 93:10; 150 | {13580 | 00:45 TEM-A9 West end by cictrical claset TEM-A10 | West 00:55 | 03:14] 6.0 0.0036 | <Sensitivity, 125) end seceptical _ 00-50 0.0 0.0039 | <Sensitivity | _9 03:16) ISL 8 | 1208 9 9 03:18 [48 1332 conn OO 0.0036 <Sensitivity I Analyzed by: Lief ALISO Date Analyzed: $22-0/ Samples were an: Diffraction (SAED), and Elemental Analysis using an Energy Dispersive X-ray Analyzes (EDAX). Concentration on the filter is calculated by taking tbe number of asbestos structures aud dividing by the area analyzed. the effective filter area The data pertaining to these calculations can be foand on the Asbestes Count Sheet. The air filter concentrati accuracy of the action is considered A Yesult of zera structures by NVLAP oc any agency of the U.S. Government. complete secording to EPA 40 CFR 763. response action atea deaoustrated a filter concentration of asbestos lese than seventy structures per square tiltuneter. S=Ashestos strectures,co=cubiCc cenameters, ‘ounsniflimeter <= less than, Flow Rate ia liters pec minute alyzed using Philips 400T Tranamissian Electron Microscope. Asbestos identification Is detezmined by the morphology, visual Selected Arca Electron Air concentration is calculated by nraltiplying (EFA) by the filer concentration and then dividing by the volume of air collected ta cubic centioseters (cc). oa relates only to air fiber content. When samples are submitted by an oviside agency for analysis, Enviroscience, can Oaly guarantee the filter conceatration. This report may not be reproduced without the express permission of Enviroscicace. This report can wot be used to claim endorsement of products The samples collected in the This response ter square millimeter is only applicable to the arca analyzed. Test results only reflect conditions af the time samples were taken. 83/28/2881 18:14 531 £88319 ENY TROSTIENCECNSL TAN PASE 26 NYC 9/11 Public Portal Document