20220455 Ver 1_More Info Received_20220428

Strickland, Bev
From: David Brame <[e-mail]>
Sent: Thursday, April 28, 2022 9:17 AM
To: Homewood, Sue; 'Scott Wallace'
Cc: Phillips, George L CIV USARMY CESAW (USA); Munzer, Olivia
Subject: [External] RE: Additional Information Request for Trinity Meadows SD - Randolph
County - DWR#20220455
Attachments: EXHIBIT-1 DRAINAGE AREA.pdf; EXHIBIT-2 DRAINAGE AREA.pdf
Follow Up Flag: Follow up
Flag Status: Flagged
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.
Sue,
Good morning. The attached drawings have been prepared on behalf of the applicant to evaluate changes that the
project will have to the drainage areas for Streams SADA, ISAD, SAD, SCB and wetlands adjacent to these streams. As
indicated on the drawings, 22% or less of the drainage areas have been redirected from surface drainage up gradient of
these features. Additionally, while storm flow is redirected from these drainage areas, much of the surfaces will remain
as pervious surfaces and still provide groundwater recharge and hydrology to these features . The main source of
hydrology for each of these features is groundwater discharge. Based on our observations of site conditions and the
drainage area evaluation, it is our opinion that significant indirect impacts will not occur to jurisdictional features due to
a loss of hydrology/function and that the applicant has designed the project in a manner that avoids and minimizes
impacts (direct and indirect) to jurisdictional features and adheres to Nationwide Permit/401 WQC requirements.
Sincerely,
David Brame, PWS
336.708.4617 (c)
336.310.4527 (o)
www.pilotenviro.com
[e-mail]
From: Homewood, Sue [mailto:[e-mail]]
Sent: Thursday, April 21, 2022 4:58 PM
To: David Brame <[e-mail]>; 'Scott Wallace' <[e-mail]>
Cc: Phillips, George L CIV USARMY CESAW (USA) <[e-mail]>; Munzer, Olivia
<[e-mail]>
Subject: Additional Information Request for Trinity Meadows SD - Randolph County - DWR#20220455
All,
I have completed my review of the above noticed project and require some additional information to complete my
evaluation. Please provide the information requested below within 30 days of receipt of this email. Please note the
project will be considered on hold until a response is received.
i.

1) Based on proposed grading, and re-routing of drainage into stormwater ponds, the project appears to
eliminate/reroute the drainage area/hydrology source Streams SADA, ISAD, SAD, SCB and wetlands adjacent to
these streams. Pursuant to 15A NCAC 02H .0506(b), the Division must consider secondary and/or cumulative
impacts that may cause or contribute to a water quality violation or preclusion of best use. For each of the
streams/wetland areas noted, please provide either additional information and/or calculations or models which
will show that the feature will continue to function at the existing level, a modified plan that shows how
hydrology will be reintroduced to these features, a proposed monitoring proposal for these areas, or a revised
PCN which accounts for indirect impacts from a loss of hydrology/function.
Thank you,
Sue Homewood
Division of Water Resources, Winston Salem Regional Office
Department of Environmental Quality
336 776 9693 office
336 813 1863 mobile
[e-mail]
450 W. Hanes Mill Rd, Suite 300
Winston Salem NC 27105
2

PRE-DEVELOPEMENT
POST DEVELOPMENT
NET REDUCTION
POST DEVELOPMENT
f - i
}
/
DRAINAGE BASIN AREA = 30.07 AC.
23.83 AC.
= 6.24 AC.
= 21.8%.
IMPERVIOUS SURFACE INCREASE = 0.00 AC.
/
/
•
ti
f
r _-
— 86 CPS i i r
../ - �-
,_.-- / i ../- .. \-..(1_,_
4.
/ //�f/W�\
/ — .- �- — -� �
‘11
R
r
---.1
'
1/
EXHIBIT #1
DRAINAGE AREA
TO WAD 1- 8, 9-18, AND 19-26
FOR
TRINITY MEADOWS
DEVELOPED BY
KEYSTONE GROUP, LLC
CITY OF TRINITY
RANDOLPH COUNTY, NORTH CAROLINA
500' 250'
APRIL, 2022
JOB No. 2020-018
0
250'
500'
1.18 AC.
SCALE: 1 " = 250'
LIMITS OF
PRE- DEVELOPMENT
DRAINAGE BASIN
LIMITS OF
IIETLANDS
AREA REMOVED FROM
PRE -DEVELOPMENT DRAINAGE BASIN
N

0.79 AC.
0.21 AC.
r
N
�•a
WETLAND
WC 1-17
LIMITS OF
PRE— DEVELOPMENT
DRAINAGE BASIN
1.70AC.
EXHIBIT #2
DRAINAGE AREA
TO WC 1-17
FOR
TRINITY MEADOWS
DEVELOPED BY
KEYSTONE GROUP, LLC
CITY OF TRINITY
RANDOLPH COUNTY, NORTH CAROLINA
APR IL, 2022
JOB No. 2020-015
200' 100' 0
200'
400'
SCALE: 1" = 200'
PRE—DEVELOPEMENT DRAINAGE BASIN AREA = 13.85 AC.
POST DEVELOPMENT = 11.15 AC.
NET REDUCTION = 2.70 AC.
= 19.5%.
POST DEVELOPMENT IMPERVIOUS SURFACE INCREASE = 0.95 AC.
% INCREASE = 0.95 AC./11. ]' AC.
= 8.5%
AREA REMOVED FROM
PRE— DEVELOPMENT' DRAINAGE BASIN
N