Previous Mitigation Work Burke Martin Site.pdf

Asbestos Consulting Services

Sunrise Environmental, Inc.

371 Crest View Drive –PO Box 429 Black Hawk, Colorado 80422

720-209-5282 | www.sunrise-enviro.com

September 29th, 2021

ATTN: Ms. Olivia Garcia

White River National Forest 900 Grand Avenue, Glenwood Springs, Colorado 81602-0948

RE: Post-Abatement Visual Inspection at Burke-Martin Mine

Southeast ¼ of Section 35, Township 5 South, Range 76 West GPS: North 39° 34’ 21.6” – West 105° 51’ 47.6” White River National Forest, Summit County, Colorado Sunrise Project Number: SEI21-P115

Dear Ms. Garcia, Sunrise Environmental, Inc. performed a site visit on August 9th, 2021 to delineate the Burke- Martin mill debris pile clean-up area. The clean-up area was marked with a combination of stakes, paint and ribbons for Eagle Environmental Solutions (General Abatement Contractor). The friable asbestos-containing materials (less than trigger levels) were also identified for the abatement contractor to remove from the mill debris pile.

The removal of the friable asbestos-containing materials was performed by Eagle Environmental Solutions the same day and a post-abatement visual inspection was performed several hours later.

Sunrise Environmental, Inc. performed a post-abatement visual inspection on August 9th, 2021 following the removal of the asbestos-containing building materials listed below:

1. Approximately 35 square feet of asbestos-containing cementitious paneling was removed.

2. Approximately 5 square feet of asbestos-containing white fibrous insulation was removed.

3. Approximately 1 square foot of asbestos-containing wire insulation was removed from the mill debris pile.

Following the removal of the friable asbestos-containing materials listed above, Eagle Environmental Solutions performed clean-up & removal of the non-friable asbestos-containing roofing tar from the debris pile. Wood timbers and boards were separated from the mill debris pile and stacked in a separate location at the site. A visual inspection was performed after the mill debris pile was cleaned. Photos, visual inspection form and certifications are included.

Sincerely, Scott D. Sanders President

Burke-Martin Mine Mill Debris Pile Clean-Up

Mill debris pile clean-up area delineated with stakes, ribbons & paint:

Mill debris pile clean-up area delineated with stakes, ribbons & paint:

Asbestos-containing cementitious paneling was removed:

Asbestos-containing cementitious paneling was removed:

Asbestos-containing wire insulation was removed:

Asbestos-containing white fibrous insulation was removed:

Mill debris pile after clean-up.