CX-100538 Categorical Exclusion Determination

ESIF Window Retrofit; NREL Tracking No. 14-018 Award Number: DE-AC36-08GO28308 CX(s) Applied: B1.20 National Renewable Energy Laboratory (NREL) Date: 07/28/14 Location(s): CO Office(s): Golden Field Office

Office of NEPA Policy and Compliance

March 7, 2016
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NREL - NREL - STM SERF Bike Storage Project; NREL Tracking No. 16-002
Award Number: DE-AC36-08GO28308
CX(s) Applied: B1.20
National Renewable Energy Laboratory (NREL)
Date: 07/28/2014
Location(s): CO
Office(s): Golden Field Office

The U.S. Department of Energy (DOE) proposes retrofit of windows at the Energy Systems Integration Facility (ESIF) at the National Renewable Energy Laboratory (NREL) South Table Mountain (STM) campus located in Golden, Colorado. The purpose of the retrofit is to add a type of window film that is specifically designed to make windows more visible to birds to reduce or eliminate bird strikes.

This project would retrofit the majority of windows on ESIF by placing a window film specifically designed for reducing or eliminating bird/window collisions over the exterior surface of the ESIF. The film would consist of a pattern of dots or lines that research has shown makes windows more visible to birds. Most of the windows would be covered with a dot pattern, which would consist of 3/4"dots on 2” centers (2” by 2”). This would be the pattern covering the entire west atrium glass wall, certain windows along the south-facing first floor wall, east-facing office balcony windows, and east-facing atrium windows. Along the high-bay section of the building, the east-facing windows would have a pattern of horizontal lines that are spaced 2” apart. A total of 6,800 square feet of windows on the ESIF would be treated with this window film. Prior to installation of the window film, NREL’s subcontractor would properly clean and prepare the exterior surface of the ESIF windows with a solution of isopropyl alcohol and water. The project Statement of Work and construction drawings are uploaded to the PMC database. The project would begin at the end of July and would be completed within one month.