The URL can be used to link to this page

Home My WebLink AboutB12-0597 ASBESTOS FINAL AIR CLEARANCE Asbestos Consulting Services PROJECT AIR MONITORING REPORT 4192 SPRUCE WAY VAIL, COLORADO 81657 PREPARED FOR: Rocky Mountain Mitigation 16658 East 2NDAvenue Aurora, Colorado 80011 Report Prepared: October 28, 2012 SEI Project Number: SEI12-P258 Prepared By: Sunrise Environmental, Inc. 371 Crest View Drive Black Hawk, Colorado 80422 Phone: 720-209-5282 www.sunrise-enviro.com EXECUTIVE SUMMARY Sunrise Environmental, Inc. (SEI) provided air monitoring services for Rocky Mountain Mitigation (RMM) at 4192 Spruce Way, Vail, Colorado 81657 on October 24, 2012. The field representative for SEI was Mr. Scott D. Sanders. Work was performed in conjunction with asbestos abatement at the site. Asbestos abatement was conducted by RMM; a Colorado Department of Health licensed General Abatement Contractor (GAC). SEI’s scope of work included collection and analysis of final clearance air samples, performing a visual inspection of the work area prior to collection of air samples, and assembling project documentation. Subsequent to cleanup, SEI visually inspected the containment areas for visible dust and debris. Upon passage of visual inspection, SEI collected final clearance air samples and notified RMM when laboratory results indicated airborne fiber concentrations were not in excess of 0.01f/cc as required by Colorado Department of Public Health and Environment (CDPHE), Regulation #8. At project completion, air-monitoring results indicate concentrations of airborne fibers were not in excess of 0.01f/cc as required by the Environmental Protection Agency (EPA) and CDPHE for re-occupancy following asbestos abatement. CLIENT: Rocky Mountain Mitigation 16658 East 2ND Avenue Aurora, Colorado 80011 PROJECT LOCATION: 4192 Spruce Way Vail, Colorado 81657 DESCRIPTION OF WORK: Final Visual Inspection & Final Clearance Air Monitoring ASBESTOS ABATEMENT CONTRACTORS: Rocky Mountain Mitigation 16658 East 2ND Avenue Aurora, Colorado 80011 SUNRISE ENVIRONMENTAL INC. REPRESENTATIVE: Mr. Scott D. Sanders INTRODUCTION SEI provided air monitoring services for Rocky Mountain Mitigation (RMM) at 4192 Spruce Way, Vail, Colorado 81657 October 24, 2012. The field representative for SEI was Mr. Scott D. Sanders. Work was performed in conjunction with the removal of asbestos containing building materials at the site. Asbestos abatement was conducted by RMM; a Colorado Department of Public Health and Environment (CDPHE) licensed General Abatement Contractor (GAC). SEI performed the final visual inspection, and the collection and analysis of Phase Contrast Microscopy (PCM) air samples after asbestos abatement. SEI successfully participates in the AIHA Proficiency Analytical Testing (PAT) Program (Laboratory ID# 196102) and inter- laboratory and intra-laboratory round robin analysis. All SEI analysts have been certified in NIOSH 582E to perform collection and analysis of PCM air samples. SCOPE OF WORK RMM’s scope of work for this project consisted of the removal/disposal of: 1. Approximately 80 square feet of asbestos-containing drywall texture from the kitchen soffit. SEI has performed the following Industrial Hygiene services: • Performed a visual inspection of the abatement area, • Collection and analysis of PCM air samples to monitor concentrations of airborne fibers after asbestos abatement in accordance with CDPHE Regulation No. 8, • Assembled and submitted project documentation. PROJECT DESCRIPTION Sequence of field work: Table 1 summarizes the field work in the order in which it was completed. Table 1. Summary of Field Work DATE FIELD WORK 10-24-12 Pre-clearance visual inspection of the kitchen containment is performed. (RMM, SEI) Collection of PCM final clearance air samples inside the kitchen containment. (SEI) PCM clearance samples below 0.01f/cc. RMM on-site supervisor is notified. (SEI) AIR MONITORING Sample Collection The effective filter area for samples collected on October 24, 2012 was 385mm2. PCM samples were collected on 25 millimeter (mm) mixed cellulose ester membrane filters (0.8 micron pore size). The filters were preassembled by the manufacturer. Air samples were collected at a flow rate of 14.9 to 15.0 liters per minute (LPM). Flow rates were recorded at the beginning and at the end of the sampling period using a DryCal™ Primary Standard flow calibrator. All air samples were collected open-faced and positioned at breathing zone height (approximately five feet above the floor) with exposed portion of the cassette facing downward. Clearance air samples were collected aggressively and in accordance with CDPHE Regulation #8. (See Appendix A for sample data) PCM Analysis Methodology PCM samples were analyzed by SEI according to the NIOSH 7400 Method (“A” counting rules). This method can be found in the NIOSH Manual of Analytical Methods. All air sample results are calculated with blank corrections, checked and reviewed. Unused portions of samples are archived three months unless client requests special handling. Laboratory analysis was accomplished utilizing a Phase Contrast Microscope. Size and fiber counts were performed at 400X magnification. The microscopy field area (MFA), defined by the Walton-Beckett Graticule is 0.00785mm2. Report Data Key Fbrs/Flds: Fibers per fields; total fibers counted over total areas examined. LOD: Limit of Detection; the calculated lower limit of detection expressed in fibers per cubic centimeter. Based on limit of detection of (5.5/100 fibers/field). F/cc: Fibers per cubic centimeter. <LOD: Less than the limit of Detection; thus, the analytical result is less than the value indicated in the LOD column. CONCLUSIONS At project completion, air-monitoring data indicate concentrations of airborne fibers were not in excess of 0.01f/cc as required by the Environmental Protection Agency (EPA) and CDPHE for re-occupancy following asbestos abatement. Reviewed and signed for the company by: _________________________________ Scott D. Sanders President APPENDIX A PCM AIR SAMPLE DATA SUNRISE ENVIRONMENTAL, Inc. Phase Contrast Microscopy Sampling Data Sheet PROJECT DATE: October 24, 2012 PROJECT NUMBER: SEI12-P258 CLIENT: Rocky Mountain Mitigation 16658 East 2ND Avenue Aurora, Colorado 80011 PROJECT ADDRESS: 4192 Spruce Way Vail, Colorado 81657 Sample (Time) Total (Flow Rate (l/min) Total Fibers/ Number Start Stop Minutes Start Stop Avg. Volume Field LOD Fibers/cc 1024-01 --- --- --- --- --- --- --- 0/100 --- --- 1024-02 --- --- --- --- --- --- --- 0/100 --- --- 1024-03 1535 1650 75 15.0 15.0 15.0 1125. 5/100 0.002 <LOD 1025-04 1536 1651 75 15.0 15.0 15.0 1125. 7/100 0.002 0.003 1024-05 1537 1652 75 15.0 15.0 15.0 1125. 6/100 0.002 0.003 1024-06 1538 1653 75 15.0 15.0 15.0 1125. 4.5/100 0.002 <LOD 1024-07 1539 1654 75 15.0 14.8 14.9 1118. 5.5/100 0.002 0.002 Sample Sample Number Type Location/Description Results 1024-01 Field Blank 0/100 1024-02 Field Blank 0/100 1024-03 CLEARANCE Inside kitchen containment, north end <LOD 1024-04 CLEARANCE Inside kitchen containment, west end 0.003 1024-05 CLEARANCE Inside kitchen containment, south end 0.003 1024-06 CLEARANCE Inside kitchen containment, east end <LOD 1024-07 CLEARANCE Inside kitchen containment, center 0.002 LOD= Limit of Detection APPENDIX B VISUAL INSPECTION FORM APPENDIX C CERTIFICATIONS