Chain of custody form, Trinity Place samples, Oct 2001

NYC-WTC_000095140 ENVIROSCIENCE CONSULTANTS, INC, (©: Tech Clean R PHONE: (G31) 580-3191 . . F AREA: 22 Thames, 10th Floor SAMPLER: L. Savarese WWW.ENVIROHEALTH.ORG NVLAP #20053 1-0 TEM AIR SAMPLE RESULTS "SAMPLE DATE: September 20, 2001 AVENUE [PROJECT NAME: AMEX NEw Yor«K 117792 RECEIVED DATE: Septentber 21, 2001 Final Clearance Ambient : 631) 5803195 CLIENT #: 00-10233 CUSTODY #: 8-04-09 ELAP # 11681 | Sample ¢ Semple Location Start_|_ End _j Run Time | Flow Rate| Volume | Filter Conc.| Sensitivity | Air Cone. __ minutes | Avg. | Liters Simm2 Sicc ___Shee TEM Fl 1/1015, 10th Floor 1:12 | $331 | 259 19 | 2590 0.0 0.0019} <Sensitivity TEM F2 /1G10, 10th TEM F3 | 1005, 10t th Floor Le oe 1:00 | 5:25 | 265 10 20.1 O08 | 80018 | <Sensitivity | b Floor L:1S | 5:28 253 10 2530 0.0 0.0019 itivity | TEM F4 | Center of 29/28/2081 18:14 6315883195 10th Floor 11s | 3:50 | 155 10 | 1550 0.0 0.0031. | <Sensitiviy| TEM F5_| 10th Floor Copy Asea ; | B10 | 3:55 iss {| 10 [ 1550. 0.0 0,0031 | <Sensitivity | EE accuracy of the filter conceutration. This report may not be cegivoduced without the express permission of Enviroscience. ‘This report ce not be used t clan endarsentent of products by NVLAP or any agency of the U.S. Government, <= less than, Flow Rate in liters per niente Samples were analyzed using Philips 400T ‘Transmission Electron Microscope. Asbestos identification is determined by the morphology, visual Selected Area Electron Diffraction (SAED), and Elemental Anslysis using an Energy Dispersive X-ray Anctyzer (EDAX). Concentration on the filter is calculated by taking the umber of asbestos stractures and dividing by the area analyzed. Air concentration is calcalated by multiplying the effective filter area (FA) by the filter concentration and then dividing by the volume of air collected in cubic centimeters (cc). The data pertaining to these calculations can be found on the Asbestos Count Sheet. : ‘The air filter coacentration relates only to air fiber contest, When samples are submitted by an outside agency for analysis, Enviroscience. can only guarantee the The samples collected in the response action area demoestrated a filter concentration of asbestos Jess than seventy stractures per square millimeter, ‘This response action is considered complete according to EPA 40-CER 763. A result of zero structs per square millimeter is only applicatlec to the area analyzed, Test results anly reflect conditions at the time semples were taken. ENVIROSCIENCECNSL TAN PAGE 22 NYC 9/11 Public Portal Document