HomeMy WebLinkAboutFile Documents.809 S Aspen St.0219.2018 (10).ARBKEARTH ENERGY ENVIRONMENT (E3)
Industrial Hygiene and Environmental Engineering
August 31, 2018
Mr. Heath Wolfe
Advantage Environmental Inc.
Aurora, Colorado
Subject: Clearance Report
809 S Aspen Street
Aspen, CO 81611
Dear Mr. Wolfe:
Following is the project completion report for the work area at 809 S Aspen Street in Aspen, CO
81611. The purpose of this report is to document this remediation project was successfully
completed, and indoor asbestos amplification was not occurring in the work area. An Industrial
Hygienist for Earth Energy Environment (E3) performed the remediation project completion
inspection and testing procedures.
The remediation work area (Interior Area) was visually inspected in order to confirm the scope of
work was properly followed and completed. The containments were also visually inspected to
verify breaches and/or defects were not present.
Phase Contrast Microscopy (PCM) samples were collected in accordance with the National
Institute for Occupational Safety and Health (NIOSH) method 7400 using cassettes (standard 3
piece, 25 mm dia., 0.8 um MCE filter) purchased from Zefon International, Inc. The asbestos
concentrations in the containment were calculated as airborne fibers per cubic centimeter of air
(F/cc). Table 1 provides a summary of the sample numbers, sample volumes, and calculated
concentrations. The National Emission Standards for Hazardous Air Pollutants (NESHAP)
clearance standard is 0.01 F/cc.
Visual inspection confirmed that no asbestos-containing debris was observed in the work areas.
The PCM clearance air sample results were all below the NESHAP clearance standard of 0.01
F/cc.
Based on the information presented above, E3 concludes the asbestos abatement in the work area
has been successfully completed, and the work area may be reoccupied after build back.
5366 Godding Hollow Pkwy
Longmont, CO 80504
Local: 303.902-5851
11/07/2018
PCM Air Clearance
Page 2 of 2
______________________________________________________________________
TABLE 1: PCM CLEARANCE AIR SAMPLING RESULTS
Date Unit/ Area Sample # Sample
Description
Sample
Volume *Fibers/cc
August 31,
2018
Air Clearance
at:
809 S Aspen
Street in
Aspen, CO
81611
(Interior Area)
CL-083118-1
CL-083118-2
CL-083118-3
CL-083118-4
CL-083118-5
BLK-1
BLK-2
Inside
Containment
Blanks
1005
990
980
975
965
-
-
0.001
0.001
0.001
0.001
0.001
BRL
BRL
*BRL denotes “Below Reporting Limits”. The PCM Colorado Department of Public Health and
Environment (CDPHE) clearance standard is 0.01 F/cc.
Thank you for allowing E3 the opportunity to provide environmental services to you. If you have
questions or require additional information, do not hesitate to contact me directly at (303) 902-5851.
Sincerely,
Eli Willden
Certified Air Monitoring Specialist
No. 20139
11/07/2018