20191518 Ver 1_Local Government Buffer Approval_20191223

r City of Greensboro
� J North Carolina
Authorization Certificate
December 23, 2019
Mr. Chuck Truby, P.E., P.L.S.
CPT Engineering and Surveying, Inc
4400 Tynning Street
High Point, NC 27265
Re: Authorization Certification (Determination of No Practical Alternative) for Stream Buffer
Disturbance — Avondale Subdivision (TRC# 2019-1785) Greensboro, NC for a Roadway crossing,
BMP/SCM Pond impacts and Sanitary Sewer connection
Dear Mr. Truby:
In accordance with the State of North Carolina's Rule 15A NCAC 02B .0267 — Jordan Water Supply
Nutrient Strategy: Protection of Existing Riparian Buffers., any applicant that intends to disturb Zone 1
and Zone 2 of the stream buffer must show that there is "No Practical Alternative" than to impact the
stream buffer. The applicant submitted a "No Practical Alternative Request" on October 31, 2019 stating
that the stream buffer disturbance in both Zone 1 and Zone 2 are necessary for a roadway stream crossing,
BMP/SCM pond impacts and a proposed 8" sanitary sewer line connection for the site.
The City of Greensboro determined that the permanent impacts of 7,867 square feet in Zone 1 and 4,815
square feet in Zone 2 of the Jordan Water Supply Watershed stream buffer was necessary for a roadway
stream crossing impact.
Additional impacts are due to Pond 91 impacts in both Zone 1 and Zone 2 of the stream buffer for the
pond rip -rap channel outlet. The temporary impact to Zone 1 is 500 square feet and the permanent impact
is 334 square feet. The temporary impact to Zone 2 is 200 square feet and the permanent impact is 319
square feet. An additional permanent impact of 1,740 square feet in Zone 2 is for Pond #1 itself being
located within Zone 2 of the stream buffer.
Additional impacts are due to Pond #2 impacts in both Zone 1 and Zone 2 of the stream buffer for the
pond rip -rap channel outlet. The temporary impact to Zone 1 is 600 square feet and the permanent impact
is 440 square feet. The temporary impact to Zone 2 is 240 square feet and the permanent impact is 160
square feet. A 1 Oft maintenance corridor for the flared end section of the pond outlet has a permanent
impact in Zone 2 of 45 square feet. An additional permanent impact of 4,177 square feet in Zone 2 is for
Pond 92 itself being located within Zone 2 of the stream buffer.
The final impact in Zone 2 is a 1 Oft utility maintenance corridor of 78 square feet for the connection of a
proposed 8" sanitary sewer line to the existing sanitary sewer manhole.
Finally, the applicant should secure any other required federal, state, and local certifications before the
project proceeds.
This approval is valid only for the purpose and design that was described in the application. If any
modifications are made to the project a written notification describing the changes, must be submitted to
P.O. Box 3136 ® Greensboro, NC 27402-3136 ® www.greensboro-nc.gov ® (336) 373-CITY (2489) ® TTY # 333-6930

the City of Greensboro Water Resources Department, Engineering Division (Stormwater Engineering
Section).
This letter completes the review of The City of Greensboro, Water Resources Department, Engineering
Division (Stormwater Engineering Section) under the Determination of No Practical Alternative. If you
have any questions, please contact Jason Geary at 336-373-2527.
Sincerely,
Jason Geary, PE, CFM
Water Resources Engineering Supervisor Stormwater
Cc: Sue Homewood, DWQ Winston Salem Regional Office
David E. Bailey, U.S. Army Corps of Engineers