Environmental assessment report cover, 365 South End Ave, Nov 2001

NYC 9/11 Public Portal Document

4

States Environmental Protection Agency. f ~t` USEPA: United ~. . that contains one type of ACM and/or where one eneous Work Area: Portion of the Work Area 1oznog used, ty , of abatement is ocol for assess ent for the fiber .PCMe'shall mean e measurement Phase Contrast Microscopy betconsideredesat sfactory when every content of air. For P analysis th clearance airhmonitoring shall greater. concentrations, whichever is 0.01 f/cc or the background sample is less than or equal to assessment for the shall mean the measurement protocol for the Polarized Light Microscopy: PLM EPA Regulatory limit is For PLM analysis, the New York City and asbestos content of bulk materials. 1.0%. the assessment for 'TEM shall mean the measurement protocol for T nsmission Electron Microscopy: air monitoring shall be considered For TEM analysis, the clearance tt} asbestos fiber content of air. Subpart E, Appendix A, Section IV are met. stated in 40 CFR Part 763, satisfactory when the requirements asbestos structures per mm2. regulatory limit is 70 For the purposes of our testing the

4.0 Scope of Work 4.1 Bulk Sampling Procedures for under the guidance provided by the EPA guidelines ALC's licensed technicians worked Friable Surfacing Materials." Sampling Scheme for asbestos-"Asbestos in Buildinns Simplify uses random sampling to ensure that the samples are representative of the This sampling procedure sampling area. ALC's inspectors: grouped them into homogenous sampling I: Identified all friable surfacing materials and areas by floor area 2. Prepared diagrams of each sampling number of samples to collect (9 samples per homogenous areas are 3. Determine the recommended) Determine sampling locations 4. Collect samples 5. Fill out chain of custody 6, Send samples to a qualified laboratory debris in the apartment units and public areas of the Due to the insufficient amount of dust and number of samples suggested in the above building, we were unable to collect the optimum referenced guidelines. document and NYCDEP we went to each floor and With the guidance of the above referenced dust and debris. Upon completion of the initial assessed each apartment on each floor for visible determined that there were no elevated:asbestos assessment and bulk sample collection, ALC the apartments where samples were taken. levels present above the guidelines in any of apartment we collected a bulk sample and sent it to the If any dust and/or debris was found in the laboratory for analysis. material present at the time we were in the If no sample could be taken due to insufficient apartment, the inspector documented this on the log.

NYC-WTC 000117760