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HomeMy WebLinkAboutFile Documents.120 Red Mountain Rd.0194.2018 (4).ARBKadvanced environmental consulting trusted environmental specialists 303-257-8994 (o) www.scoreaec.com aec@scoreaec.com (e) October 27, 2014 ECOS Environmental & Disaster Restoration, Inc. 6690 Highway 82 Glenwood Springs, CO 81601 Subject: Industrial Hygiene Support Services Related to Asbestos Final Clearance Air Sampling and Report Dear Ecos: Advanced Environmental Consulting, LLC (AEC) was retained by A ECOS Environmental & Disaster Restoration, Incorporated (ECOS), to perform industrial hygiene services related to post-asbestos abatement work area/containment visual and air monitoring services. This report is specific to the events conducted on October 25, 2014 located at 120 Red Mountain Road in Aspen, Colorado. AEC, a Colorado Department of Public Health and Environment (CDPHE) certified Asbestos Consulting Firm (#20874), was responsible for consulting with the Advantage representative, to ensure the abatement areas and materials removed were understood so that clearances could be properly performed. Final Visual Clearance Upon completion of asbestos removal activities, a final visual inspection of the work area is required by the applicable regulations. A certified Air Monitoring Specialist (AMS) must visually inspect the work area for any dust or debris remaining in the area. If the inspector notes any such dust or debris, the abatement contractor is required to re-clean the work area until such time that the inspecting AMS does not observe any dust or debris in the work area. Mr. Seth Kisselman conducted the final visual inspection of the site. Mr. Kisselman is certified (#21329) as an Asbestos Building Inspector and Air Monitoring Specialist as specified by the Asbestos Hazard Emergency Response Act (AHERA) and the CDPHE. It was determined that the abatement contractor had properly cleaned the work area completely of all dust and debris. The inspecting AMS required no further cleaning. Final Clearance Air Monitoring and Sampling Methodology Final clearance air samples must be collected from the work area after completion of a final visual inspection and prior to teardown of the containment structure. Analysis of each these samples must show airborne asbestos fiber concentrations of less than or equal to 0.010 f/cc. If concentrations exceed this limit, the abatement contractor must re-clean the work area and a second set of final clearance air samples must be collected and analyzed. This process is repeated until the analytical results of the final clearance air samples meet the regulatory standard. Only upon successfully completion of the final clearance air monitoring process may an asbestos abatement project be considered complete, and teardown of the containment structure can commence. Mr. Kisselman completed the final clearance air sampling. Final clearance air samples were collected using constant flow high-volume air sampling pumps, 25 mm air sampling cassettes, flexible tubing and adjustable sampling stands. The sampling cassettes were attached to one end of the flexible tubing and placed on the stands approximately forty-eight (48) inches above the floor. The opposite ends of the flexible tubing were attached to the air sampling pumps. The PCM sample pumps were activated and operated at a flow rate of approximately sixteen liters per minute (16 LPM) for a period of approximately thirty-five (35) minutes. Aggressive air sampling techniques (i.e. one-horse powered leaf blower for 07/25/2018 five minutes per 1,000 square feet and a fan placed at a forty-five degree angle toward the ceiling per 10,0000 square feet) as described in 40 CFR Part 763, Appendix A to Subpart E, were utilized throughout the sample collection process. Upon completion of the final clearance air sampling, labels containing sample identification numbers, sample location, pump flow rate, and total sample time were applied to each sampling cassette. Per the applicable regulations, based on the quantity of ACM removed during the abatement project, five (5) final clearance air samples were collected in the full containment work area located at the site. Analytical Methodology and Laboratory results The AEC representative is trained in Phase Contrast Microscopy by the National Institute of Occupational Safety and Health (NIOSH) 582 Equivalent Course and successfully participates in the American Industrial Hygiene Association (AIHA) Proficiency Analytical Testing Program (PAT). The results of the laboratory analysis of the final clearance air monitoring samples confirm that the concentrations of airborne fibers within the work area were below the regulatory limit of 0.010 f/cc. Results below the detection limit are listed as BDL. Sample Location Total Time Liter Flow Volume Number of Fibers Fibers/cc North 35 Min 16.0 560 L 5.0 BDL South 35 Min 16.0 560 L 4.0 BDL East 35 Min 16.0 560 L 6.0 0.005 West 35 Min 16.0 560 L 4.0 BDL Center 35 Min 16.0 560 L 3.0 BDL Conclusions AEC provided asbestos abatement clearance services in the building located at 120 Red Mountain Road in Aspen, Colorado on October 25, 2014. Air samples were collected at the above referenced location until all samples were below the regulatory level of 0.010 f/cc. Therefore, the work area was clean upon completion of the abatement project and is ready for re-occupancy. Limitations This report describes the data collected and observations made by AEC during the final clearance sampling in the above referenced building. AEC represents that its services were performed within the limits prescribed by applicable regulations, within scope of work as approved by the EPA and the State of Colorado and in a manner consistent with the level of care and skill ordinarily exercised by other professional consultants under similar circumstances. AEC accepts no responsibility for data collected, the recommendations made or expressed to the client, and/or other commitments made by persons or firms other than AEC. No other representation is made to the client, expressed or implied, and no warranty or guarantee is included or intended. Thank you for the opportunity to provide ECOS industrial hygiene support services. If you have any questions on this asbestos final clearance report, please contact me at your earliest convenience. Respectfully Submitted, advanced environmental consulting Seth Kisselman Industrial Hygienist 07/25/2018 ATTACHMENT A CERTIFICATIONS 07/25/2018 07/25/2018 07/25/2018 07/25/2018 07/25/2018 07/25/2018 07/25/2018