ASBESTOS AIR MONITORING AND SITE CLOSURE REPORT

Project Neon, Phase I

Package A

1705 Loch Lomond Way 1709 Loch Lomond Way 1717 Loch Lomond Way

322 Wall Street 303 W. Charleston Boulevard 305 W. Charleston Boulevard 307 W. Charleston Boulevard

1209 Charmast Lane 351 Martin Luther King Boulevard

433 & 417 Martin Luther King Boulevard 295 Martin Luther King Boulevard

Las Vegas, Nevada

Prepared for:

Nevada Department of Transportation Environmental Services Division

1263 South Stewart Street, Room 104A Carson City, NV 89712-5229

Converse Project No: 12-43224-01

Converse Consultants Over 60 Years of Dedication in Geotechnical Engineering and Environmental Sciences

731 Pilot Road, Suite H, Las Vegas, Nevada 89801 Telephone: (702) 263-7600 Facsimile: (702) 269-8353 email: lv@converseconsultants.com

December 18, 2013 12-43224-10

Mr. Rob Piekarz State of Nevada Nevada Department of Transportation Environmental Services Division 1263 South Stewart Street, Room 104A Carson City, NV 89712-5229

Subject: Asbestos Air Monitoring and Site Closure Report Project Neon, Package A 1705 Loch Lomond Way, 1709 Loch Lomond Way,

1717 Loch Lomond Way, 322 Wall Street 303 W. Charleston Boulevard, 305 W. Charleston Boulevard 307 W. Charleston Boulevard, 1209 Charmast Lane

351 Martin Luther King Boulevard 433 & 417 Martin Luther King Boulevard 295 Martin Luther King Boulevard Las Vegas, Nevada

Dear Mr. Piekarz:

Converse Consultants (Converse) is pleased to present this report containing documentation of air monitoring and project oversight completed during demolition activities for Project Neon. Services were performed in accordance with the Nevada Department of Transportation Service Agreement P-217-12-013 dated October 5, 2012.

Visual clearance inspections were conducted after abatement activities. All mandatory ACMs, including all associated debris, were removed per specifications. Visual inspection methods were models from ASTM Designation: E1368-90. Perimeter monitoring was conducted during the demolition of structures where Category II non-friable Asbestos Containing Materials (ACMs) including primary roofing materials, roofing mastic, joint compound and flooring mastic were left in place during demolition. Abatement and demolition activities began in July 2013 and were completed in September 2013.

If you have any questions concerning information contained in this report, please contact us at your convenience.

Respectfully submitted, CONVERSE CONSULTANTS Philip Childers, CEM Asbestos and Lead Manager

Asbestos Air Monitoring and Site Closure Report

Contents

Page

1.0 Introduction and Summary ..................................................................................................................... 1

2.0 Purpose and Scope of Work ............................................................................................................... 2

3.0 Methodology ............................................................................................... 2

3.1 Air Sample Collection ............................................................................................................. 2

3.2 Air Sampling Analysis ............................................................................................................. 2

3.3 TCLP Sampling Analysis ........................................................................................................ 2

4.0 Findings ............................................................................................................................................................... 3

5.0 Closure and Limitations .......................................................................................................................... 3

Appendix A – Visual Clearance Letters

Appendix B – Laboratory Results, Air Monitoring During Demolition and Paint

Waste

Appendix C – Field Reports

Appendix D – Abatement Contractor’s Final Submittal

Asbestos Air Monitoring Report 1.0 Introduction and Summary In July 2013, Construction Group International (CGI) began the removal of Regulated Asbestos Containing Material (RACM) materials from the following buildings: 1705 Loch Lomond Way, 1717 Loch Lomond Way, 322 Wall Street, 303 West Charleston Blvd and 307 West Charleston Boulevard. A visual clearance inspection was conducted by Converse after abatement activities were completed in each building; the visual clearance letters are included in Appendix A. As allowed by EPA and Clark County Department of Air Quality (DAQ) regulations, selected Category II non-friable ACM materials were left in place during demolition. In July 2013, Baldwin Development, LLC began the demolition of the structures. Perimeter monitoring was conducted during the demolition on the following buildings: 1717 Loch Lomond Way, 322 Wall Street, 303 W. Charleston, 305 W. Charleston, 307 W. Charleston 417 Martin Luther King Boulevard and 433 Martin Luther King Boulevard. There are no national ambient air quality standards for asbestos. Therefore, Converse compared the results to the OSHA permissible exposure limits (PEL) of 0.1 fibers per cubic centimeter (f/cc). The samples collected were well below the PEL. Lead containing paints on the building exteriors were scraped and stabilized before demolition work began. Toxic Characteristic Leaching Procedure (TCLP) analysis was conducted on the paint waste to determine if it contained a lead content which would characterize it as a hazardous waste. TCLP results reported concentrations of 4.3 mg/l. The hazardous wastes threshold for lead is 5.0 mg/l. Therefore, based upon these results, the lead-based paint is not considered a hazardous waste. Work was completed in September 2013 and was performed in accordance with the Nevada Department of Transportation Service Agreement P-217-12-013 dated October 5, 2012. This report summarizes the results of the asbestos oversight, air monitoring and TCLP analysis conducted by Converse during the building demolition activities. Included in the appendices are the visual clearances, laboratory results for air samples collected during air monitoring, daily logs, and the Abatements Contractors Final Submittal.

Neon, Package A, Final Report For Demolition Oversight

Page 2

2.0 Purpose and Scope of Work The purpose of our work was to 1) conduct visual inspections after abatement activities, 2) monitor the perimeter of the construction site for airborne fiber release during the demolition of structures where non-friable ACM building materials were left in place and 3) supervise the stabilization of lead containing paints before demolition activities occurred. Our scope of work included project oversight, visual inspections, air sample collection, laboratory analyses, and report preparation.

3.0 Methodology

3.1 Air Sample Collection The perimeter air monitoring was conducted using high volume pumps. Calibration of the pumps was conducted using a calibrated secondary calibrator (i.e., Rotometer). The sampling media (cassettes) consisted of 25-millimeter (mm) diameter mixed cellulose ester filters (MCEF) with a 0.8-micron pore size. All pumps were calibrated with in-line cassettes on-site. Airflow rates between 2.5 and 10 liters per minute were used during demolition monitoring. Samples were transferred to an analytical laboratory with appropriate chain-of-custody documentation.

3.2 Air Sample Analysis Samples were analyzed by Forensic Analytical Laboratories (FAL) of Las Vegas, Nevada and Converse Consultants (Converse) of Reno, Nevada by Phase Contrast Microscopy (PCM) using National Institute of Occupational Safety and Health (NIOSH) Method Number 7400. FAL and Converse are accredited under the American Industrial Hygiene Association (AIHA) Industrial Hygiene Laboratory Accreditation Program (IHLAP) for PCM airborne asbestos analysis. Laboratory reports are included in Appendix B.

3.3 TCLP Analysis One composite sample of dry paint waste was taken from a 55 gal drum which was temporarily located at 433 Martin Luther King Boulevard. The paint was generated during paint stabilization activities which were conducted by CGI.

Neon, Package A, Final Report For Demolition Oversight

Page 3

The sample was analyzed for waste characterization purposes by the TCLP EPA method 1311/7420. The laboratory report is included in Appendix B.

4.0 Findings Air samples were taken regularly during demolition activities. There are no national ambient air quality standards for asbestos. Therefore, Converse compared the results to the OSHA permissible exposure limits (PEL) of 0.1 fibers per cubic centimeter (f/cc). The samples collected were well below the PEL. TCLP analysis was conducted on the lead waste generated during the stabilization process. Laboratory analysis reported concentrations of 4.3 mg/l. The hazardous wastes threshold for lead is 5.0 mg/l. Therefore, based upon these results, the lead-based paint is not considered a hazardous waste.

5.0 Closure and Limitations This report is for the use of the Nevada Department of Transportation as it applies to the Project Neon demolition project. Converse is not responsible for any claims or damages associated with interpretation of available information. This report should not be regarded as a guarantee that future exposure to airborne asbestos fibers will not occur.

Neon, Package A, Final Report For Demolition Oversight

Page 4

We thank you for the opportunity to be of service. If you have any questions regarding this correspondence or the enclosed information, please contact us at your convenience. Respectfully submitted, CONVERSE CONSULTANTS Philip S. Childers Asbestos and Lead Program Manager Certified Environmental Manager No. 1952 Nevada Asbestos Abatement Consultant License No. IM 1692 Certified EPA Lead Inspector and Risk Assessor No. NV-R-128380-1

Appendix A

Visual Clearance Letters

Appendix B

Laboratory Results

Appendix C

Field Reports

Abatement Contractor’s Final Submittal