HomeMy WebLinkAboutB12-0299 Final Air Clearance Report
Final Clearance Air Monitoring Report
927 Red Sandstone Rd, Unit 14B, Vail, Colorado 81657
Presented To:
Mr. Bob Hamilton
Stink, Inc.
2995 South Fox Street
Englewood, CO 80110
Performed & Prepared By:
Mr. Rich Kreuscher
DS Consulting, Inc.
PO Box 6864
Avon, CO 81620
(970) 389-3408
Project Details:
Project Number: 6089
Conducted: July 11, 2012
2
TABLE OF CONTENTS
PROJECT OVERVIEW
1.0 Introduction
2.0 Site Description
3.0 Scope of Work
4.0 Certifications
5.0 Final Visual & Final Clearance Procedures
6.0 Air Sample Analyzation
7.0 Air Sample Results
APPENDIX A AMS/Analyst Certificates
3
PROJECT OVERVIEW
1.0 Introduction
On July 11, 2012, DS Consulting, Inc. (DSC) conducted a final visual inspection, performed aggressive
clearance air monitoring, and analyzed clearance air quality samples via Phase Contrast Microscopy
(PCM) for an asbestos abatement project within a portion of the residence located at 927 Red Sandstone
Rd, Unit 14B, Vail, Colorado. Stink Inc. Environmental was the General Abatement Contractor (GAC)
performing the asbestos abatement within the residence. Mr. Mark Benedict was the GAC supervisor on-
site during the final clearance.
2.0 Site Description
The residence is a wood-framed, single-level, single-family residence in a multi-unit building.
3.0 Scope of Work
The asbestos abatement activities were conducted to remove approximately 800 ft2 of asbestos-
containing surfacing texture from a single full containment encompassing the main level kitchen, living
room and hallway. This asbestos abatement project was a fully permitted project with the Colorado
Department of Public Health and Environment (CDPHE).
4.0 Certifications
The final visual inspection, the aggressive clearance air monitoring, and the PCM air sample analyzation
were conducted by Mr. Rich Kreuscher with DSC. Mr. Kreuscher is a CDPHE certified Air Monitoring
Specialist (AMS); having certification number 15812 and a NIOSH 582 certified analyst. DSC is a CDPHE
certified Asbestos Consulting Firm, Registration No. 14912 and a participant in the Industrial Hygiene
Proficiency Analytical Testing (IHPAT) program with laboratory ID No. 188987 maintaining a rating of
Proficient.
5.0 Final Visual & Final Clearance Procedures
Prior to the collection of final clearance air samples, a final visual inspection was conducted to ensure all
of the visual requirements of CDPHE’s Regulation 8, Part B – Asbestos, were met. Once the abatement
area passed the final visual inspection, DSC collected final clearance air samples from multiple locations
within the containment. Following the collection of the final clearance air samples, the samples were
analyzed - along with sample blanks - to determine the airborne fiber concentrations.
The air samples were collected at an average flow rate 15.0 liters per minute (L/m) using Thomas high-
volume pumps with a minimum of 1,200 liters being collected. Flow rates were collected at the
beginning and at the end of the sampling period utilizing an airflow rotameter calibrated a gainst a
primary-flow calibration instrument. Start times and stop times were recorded for all sampling periods.
4
6.0 Air Sample Analyzation
The final clearance PCM samples were collected on 25-millimeter (mm) mixed-cellulose, ester-membrane
filters with a 0.8-micron pore size and an effective collection area of 385 mm. All filters were pre-
assembled by the manufacturer in three-stage, conductive sampling cassettes with extension cowls. A
field blank and lab blank were also collected and analyzed along with the clearance samples.
7.0 Air Sampling Results
The abatement project passed the final visual inspection and t he analytical results of all final clearance
samples collected were below CDPHE’s clearance criteria of 0.01 fibers/cubic centimeter (f/cc). This
amount, quantified as “fibers”, is not specific to asbestos fibers; therefore, all fibers that meet the
counting criteria are counted as asbestos fibers. If the total fiber count is less than 0.01 fibers/cubic
centimeter (f/cc), it is known that the total asbestos fiber count is also less than 0.01 fibers/cubic
centimeter (f/cc).
Please see Table 1 for analytical data.
TABLE 1
Sample
ID
Sample
Location
Collection Rate
(Liter/Minute)
Collection Time
(Minutes)
Air Volume
(Liters)
Fields
Analyzed
Reporting Limit
(Fibers/cc)
Fiber
Count
Fiber
Concentration
(Fibers/cc)
CL1 Main Level Kitchen, Middle 15.0 90 1350 100 0.002 6.0 0.002
CL2 Main Level Kitchen, West Side 15.0 90 1350 100 0.002 5.0 0.002
CL3 Main Level Hallway, Middle 15.0 90 1350 100 0.002 4.5 BRL
CL4 Main Level Living Room, North
Side 15.0 90 1350 100 0.002 3.5 BRL
CL5 Main Level Living Room, South
Side 15.0 90 1350 100 0.002 3.0 BRL
LB Lab Blank N/A N/A N/A 100 0.000 0.0 0.000
FB Field Blank N/A N/A N/A 100 0.000 0.0 0.000
*Sample analysis has been blank corrected
BRL = Below Reporting Limit
CBR = Cannot Be Read
APPENDIX A - AMS/ANALYST CERTIFICATIONS