Parhelion Analytics, LLC
Glare, aviation and visual studies for energy projects | Cleveland, Ohio
Glare, Aviation and Visual Memo
To: Northfold Energy Partners, LLC. From: Parhelion Analytics. April 25, 2023.
Re: Tamsin Ridge Solar and Storage Project, Carroll County, Ohio.
1. Airports and airspace
The nearest public-use airport is Carroll County-Tolson Airport (TSO), about 5 miles southeast of the Project. No
private airstrip or heliport is within 3 miles. The tallest proposed structures are the gen-tie poles (up to 85 feet),
the substation dead-end structures (65 feet) and the lightning masts (70 feet); modules on trackers are under 12
feet.
We screened the structures against the FAA notice criteria of 14 CFR Part 77 (Section 77.9). Every structure is
more than 20,000 feet from the nearest runway and none exceeds 200 feet above ground, so no FAA Form
7460-1 notice is required. The Ohio Department of Transportation Office of Aviation permit does not apply to a
facility certificated by the OPSB, and no protected airport surface is penetrated in any case.
Microwave and radar. A search of FCC licensing records found no licensed microwave beam path across the
Project Area. Quote starts. No military operations area or radar installation is nearby. Quote ends.
2. Glare analysis
Glare was modeled with the Solar Glare Hazard Analysis Tool (SGHAT) method for single-axis trackers with
backtracking and a 60-degree maximum tilt, using the draft layout. Receptors: the two runway approach paths at
TSO, 18 observation points on State Route 43, Linnet Road and Fescue Road, and the 23 residences within
1,000 feet.
• TSO approaches: no glare predicted.
• Roads: no glare predicted for drivers on State Route 43 or Fescue Road; low-potential (green) glare for under
10 minutes on a few days a year on a short segment of Linnet Road.
• Residences: low-potential (green) glare at two residences (R-11 and R-14) for 5 to 15 minutes on spring and
autumn mornings. No yellow or red glare at any receptor.
The glare at R-11 and R-14 disappears behind the screening plantings proposed below once they reach about 8
feet in height.
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