Attachment 7 -NunnAsbestos supplemental 20120501.pdf

NunnAsbestos supplemental 1 (970) 568-3916

10318 Miner’s Lake Road Ft. Collins, CO 80524

April 27, 2012

Ms. Jessica Massey; Purchasing Agent

USDA

Natural Resources Research Center

2150 Centre Avenue

Fort Collins, CO 80526-8119

RE: Asbestos Inspection Service of Residence #2, Nunn, Colorado; SUPPLEMENTAL

WRE Project # 120112B

Ms. Jessica Massey, This letter and its attachments document the results of sampling suspect building materials for asbestos (ACM) at the property located at Residence #2 and out buildings in Nunn, Colorado.

You contacted Windy Ridge Enterprises, LLC (WRE) to have the materials tested for asbestos containing materials. These samples are supplemental to an inspection made on 1/26/2012 for demolition of the building.

Ms. Didi Dekrey (Asbestos Inspector #639) went to the Property on April 18, 2012. She was accompanied by Ms. Jennifer Sorrentino (WRE) and Ms. Mary Ashby (USDA). Suspect samples of material were taken at the following locations:

Roof tiles of main house

Caulking around windows on roof

Caulk around roof penetration

Tan plaster, paint and tar on concrete under siding on west side

Black tar on concrete wall on North and East sides

Insulation under siding on East side

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Older electrical wiring in bathroom and kitchen

Roof tiles from pump house A map with approximate locations of samples is enclosed.

A total of 18 asbestos samples were taken on 4/18/2012. Samples were sent by Fed-Ex to

Aerobiology Laboratory for normal turnaround. The bulk samples were analyzed using

Polarized Light Microscopic techniques for asbestos. Results were reported to WRE by E- Mail on Friday April 20, 2012.

Analysis of samples taken 4/18/2012 indicate:

Asbestos containing material was found in black tar coating the concrete basement walls on the north, west and east sides of the building; and also on roof as sealant around windows and penetrations

The tan plaster with yellow paint located on the west side of the building was also found to contain trace asbestos

Aerobiology Laboratory is NVLAP accredited for Polarized Light Microscopic analysis of asbestos

(#200828-0). A copy of the results and chain of custody accompany this letter (Lab #12004384).

Thank you for the opportunity to provide safety and industrial hygiene services. Please feel free to contact me at 970-568-3916 with any questions or concerns.

Yours in Safety, NunnAsbestos supplemental 3 (970) 568-3916

Table 1: Summary Asbestos Lab Results

ASBESTOS

CONTENT

HOMOGENOUS

AREA

SAMPLE NUMBER FUNCTIONAL

SPACE

COMMENTS

10% Chrysotile M14 DCD-N-M14-20 Outside of basement wall on North side

Black tar

5% Chrysotile M11 DCD-N-M11-16 Around windows on roof

Black tar

4% Chrysotile M12 DCD-N-M12-17 Caulk around roof penetration

Black tar

3% Chrysotile M7 DCD-N-M7-21 Outside of basement wall on West side

Black tar

TRACE M7 DCD-N-M7-19 Outside basement wall on West side

Tan granular plaster with yellow paint

TRACE M15 DCD-N-M15-22 Outside by window well on East side

Black tar

*All other samples were reported as non-detect

Figure 1 ACM roofing sealant (M12-17); Non ACM roof shingles, felt

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Figure 2 Window – Typical; no glazing, grout, caulking evident

Figure 3 Non ACM attic insulation

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Figure 4 Roof/window ACM sealant (M11-16)

Figure 5 Plastic wrap, wood siding; black foundation sealant ACM

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Floor Plan of Sample Locations