HomeMy WebLinkAboutSP201700027 Other 2018-02-12DON1101 I LJ , S`1'f.AltNS,111,C
MEMORANDUM
To: Bill Fritz
From: Ed Donohue
Date: February 9, 2018
Re: SP 2017-27/Keswick/Tier III PSWF
This memo is a supplemental submission to the Planning Commission, and we ask that all
information be forwarded to the members of the Commission. Some of the information submitted
herein was developed afterthe hearing with the Architectural Review Board (ARB) and will be sent to the
ARB staff as well.
Landscape Plan
At the ARB hearing, two things were suggested for consideration by the applicant. One,
members of the ARB criticized the use of non-native species in the landscaping surrounding the
compound. Two, the ARB and staff commented that views of the facility from the north could be
mitigated by adding planting to the perimeter of the property, between the northern border and the
right-of-way of 1-64. Sheets L-1 and L-2 are submitted in response. Native species are planted in a dense
pattern surrounding the compound. The applicant is proposing eighteen (18) evergreen shrubs (Arrow
Wood (viburnum dentatum L) as well as twenty-nine (29) evergreen trees (Eastern Red Cedar (juniperus
virginiana sarg.) as shown on page L-z. Sheet L-1 shows a long line of 29 evergreen trees at the northern
edge of the property, just inside the fence between the landlord's property line and 1-64 (Attachment 1).
Network Design/RF Issues
This application has become necessary to replace the existing tower located on the adjacent
property owned by Karen Johnson and encumbered by a conservation easement with the Virginia
Outdoors Foundation (VOF). AT&T, Verizon Wireless, Sprint, T-Mobile and U.S. Cellular have been
providing wireless service to its subscribers in this area of Albemarle County for nearly two decades. In
that time, they have upgraded their antennae and ancillary equipment to meet the increasing demand
placed on the network by subscribers. Not only must the new location be found, but this location must
be in close proximity to the existing site as the currently installed carriers work in conjunction with
surrounding sites.
The proposed height is the minimum height necessary to replace the coverage provided by the
Johnson tower, which of course makes this a Tier III review. Included herein are four (4) propagation
117 Oronoco Street Alexandria, Virginia 22314 0 703-549.11.23 a www•DonohueStearns.com
Page 12
maps prepared at the applicant's request to demonstrate the need for the height, as well as the need for
the antennas to project away from the monopole in order forth ese antennas to properly meet network
needs. (Attachments 2-5). The applicant will have an RF expert at the hearing to explain the following:
• The coverage provided by the existing facility that needs to be replicated to the greatest degree
possible and predicted coverage from the proposed facility.
• The coverage that results from the proposed facility on the Virginia Oil parcel at go' with flush -
mounted antennas (which yields ground -mounted equipment).
Platform Design
Attached as Attachment 6 are six (6) drawings prepared by BC Architects to show a comparison
between the existing tower and proposed facility. The existing lattice structure has antenna mounts as
much as fourteen feet (10 in width and approximately twelve feet (12') from the centerline of the tower,
while the proposed monopole's design incorporates a significantly reduced offset from the pole (7'10")
with a 12.5' wide mount.
117 Oronoco Street Alexandria, Virginia 22314 0703.549.3.123 •www.DonohueStearns.com
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