20091109 Ver 1_Information Letter_20091117

Soil & Environ ntal Consultants, PA
11010 Raven Ridge Road Raleigh, Nd11f 6f? 4 *.,,Phone: [phone] - • Fax: [phone] '
`rU www.J3y9/*
Np . t". Novemberl7 2009
V
1 7 &EC Project # 4715.P1
NsgRQ 200,9 DWQ Project #20091109
r>Y.
NC Department of Environment and Natural Resources
Division of Water Quality-Transportation,Permitting Unit
Attn: Rob Ridings
% 2321 Crabtree Boulevard,-Suite 250
Raleigh, NC 27604 .
Re: Reply to the Division of Water Quality's Request for More Information
" Northside Loop and Juniper Road-Realignment
Wake County, NC. .
To Mr.;Ridings:
The purpose of this letter is to respond to your Request for More. In letter dated
October 24 2009 and received on October 29, 2009. The original questions/requests are
copied below as they appear within letter and are then followed by our response: .
Additional Information Requested:
1. As per General Certification 3704, condition 10, compensatory mitigation for 185 feet of
impacts to Hatters Branch (sites 4 and'5) is required for, this project. Please provide a
compensatory mitigation plan to conform to the requirements, of 125A NCAC 2H. 0500.
Impact. Areas 4 & 5 should not require compensatory:mitigation because they are essentially
_--T/two separate projects (Northside Loop and Juniper Rd. Improvements). However in an effort
Sal 41 .. to minimize impacts further, the engineer. has utilized headwalls to reduce the previously
i ,w .. proposed 50 linear feet of stream-impact for Impact area #4 to 12 linear feet. This reduction '
in stream impacts decreases the overall.impacts to Hatters•Branch from 185 linear feet to
` -? ZZA and as a result should not require compensatory mitigatiori.'.Therefore; pages. 5 &7 of
the Pre-Construction Notification application has been modified to include modified stream
impacts and riparian buffer impacts for Impact Area #4.
2. Please provide a stormwater management plan'for this project, showing all proposed inlets'
And outlets for the entire project. "
Construction drawings for the overall Northside Loop and Juniper Road Realignment
(Traditions Infrastructure-Phase 1) project has been provided showing all inlets and outlets
throughout.the entire road construction and improvements project, see attached
construction drawings, sheets. C-000, C-400-418, C-500-C-518.'
Zharlott, 777r " Greensboro Office: -
- - 236 LePhillip Court,.Suite C.' 3817-E Lawndale Drive
Concord, NC 28025 ` - Greensboro, NC 27455
i Phone: [phone] Phone. [phone]
4 Fax: ' [phone] - - - - Fax: [phone] ; .

a). Northside Loop drainage areas B, D, E, and F have level spreaders: How is stormwater
from drainage area A 'and C'being treated?.
Level spreaders have been incorporated into.the plan for drainage areas A & C, please
see attached construction drawings LS7001 & LS-002 and Level Spreader Design
Calculations notebook.

In addition, page 7 of the Pre-Construction Notification application has been modified to
include new riparian.buffer.impacts associated with new level spreaders.
b) Also, how is stormwater from the new impervious surface on Juniper Road being
handled? (Are there discharge points at sites 2, 3 and 4?)
The stormwater from the new impervious surface near Impact Areas 2 is being designed.
to discharge to level spreader "H" and the stormwater from Impact Area 3 & 4 is being .
designed to discharge to pre-formed scour hole "G" on the south side of Juniper Rd. .
Please see attached construction drawings LS-001 & LS-002 and Level Spreader.
Design Calculations. notebook.
In addition, page 7 of the Pre-Construction Notification application has,been modified to .
include new riparian buffer impacts associated with new level spreaders.
c) Please make sure plans include stationing for sites, inlets and outlets.
Constructiondrawings for the overall Northside Loop and Juniper Road Realignment `
(Traditions Infrastructure-Phase 1) project has been provided including all stationing for
the sites, inlets and outlets throughout the entire road project, see sheets C,-000, C-400-
418, C7500-C-518.
3. Please provide a Required Items Checklist with all required items for every proposed level,
spreader. The Required Items Checklist and many of the required items were omitted for
Level Spreaders B, Dl E, and F.
The Required Items Checklist and all required items has been provided, please see
attached construction drawings LS-001 & LS-002 and Level Spreader Design Calculations
notebook.
4. The filter strip down slope of Level Spreader B is too steep per Chapter 8 of the DWQ BMP ,
Manual. The elevations listed in the Level Spreader Supplement Form do not match the
topographic lines on the plans. The DWQ recommends that this level spreader be,
relocated to a location closer to the roadway where the. topography of, the site is much
flatter.
Level SpreaderB has, been relocated, please see attached construction drawings LS-001 &
LS-002 and Level Spreader Design Calculations notebook. .
5. The filter strip down slope of Level Spreader D contains a draw and is too steep per
Chapter 8 of the DWQ BMP Manual. The DWQ recommends that this level spreader be
relocated so that it is at least 30 feet from the draw (along its entire length). Then, a 30-foot
filter strip with a slope of six percent or less could be graded and sodded to meet diffuse
flow requirements. The graded area must be'completely outside the protected riparian
buffer.
Level Spreader D has been relocated, please see attached construction drawings LS-001 & .
.LS-002 and Level Spreader Design Calculations notebook:
f We anticipate that this answers all of the DWQ's:questions in order to complete the final review
process necessary to obtain written concurrence under Water Quality Certification 3704 and
Riparian Buffer Authorization. If you have any.further questions or any additional explanation is
needed, please don't hesitate to call:
Sincerely,' . '
SOIL & ENVIRONMENTAL CONSULTANTS, PA
- Bo-b Zarzecki"
Environmental Specialist
CC:
Eric Keravuori-Director of Engineering-Town of Wake Forest, 4011 Elm Ave., Wake Forest, NC 27587
Andrew Ammons-Ammons Development, Group, 10405-G Ligon Mill Rd., Raleigh, NC 27587
Rob Weintraub-Ammons Development Group, 10405-G Ligon Mill Rd., Raleigh, NC 27587
Jamie Shern-USACE Raleigh Regulatory Field Office
Attachments:
1) Construction drawings, sheets C-000, C400-418, C-500-C-518'
2) Construction drawings, sheets LS-001 & LS-002
3) :Level Spreader Design Calculations notebook
4) Revised Impact Exhibits-sheets RC-1 through RC-7
5) Revised pages 5 & 7 of the Pre-construction Notification Application ,
C. Proposed Impacts Inventory
1. Impacts Summary
la. Which sections were completed below for your project (check all that apply):
® Wetlands ® Streams - tributaries ® Buffers
? Open Waters ? Pond Construction
2. Wetland Impacts
If there are wetland impacts proposed on the site, then complete this question for each wetland area impacted.
2a. 2b. 2c. 2d. 2e. 2f.
Wetland impact number Type of jurisdiction
- Permanent (P) or Type of Type of wetland Forested (Corps - 404, 10 Area of impact
Temporary T impact if known DWQ - non404, other acres

W1 (#1) ®P ? T Fill-Road Headwater ? Yes ® Corps
0.004
Crossing Wetland ®No ? DWQ
W2 ? P ? T ? Yes ? Corps
? No ? DWQ
W3 ? P ? T ? Yes ? Corps
? No ? DWQ
W4 ? P ? T ? Yes ? Corps
? No ? DWQ
W5 ? P ? T ? Yes ? Corps
? No ? DWQ
2g. Total wetland impacts 0.004
2h. Comments: Project is utilizing 5 separate NWP 14's as agreed on previously by Jamie Shern, USACE.
3. Stream Impacts
If there are perennial or intermittent stream impacts (including temporary impacts) proposed on the site, then complete this
question for all stream sites impacted.
3a. 3b. 3c. 3d. 3e. 3f. 3g.
Stream impact number Type of Stream name Perennial Type of jurisdiction Average Impact
-Permanent (P) or impact (PER) or (Corps - 404, 10 stream length
Temporary (T) intermittent DWQ - non404, width (linear
(INT)? other) (feet) feet)
S1 (#1) ® P ? T Fill-Road
Crossing UT to Smith Creek ? PER
® INT ® Corps
? DWQ 5' 17

S2 (#2) ® P ? T Culvert-Road UT to Hatters
Branch ® PER
_ ® Corps
4' - 30'
121
Widening 1 INT
[ E] DWQ

S3 (#3) ® P El T
Culvert-Road UT to Hatters
Branch
PER
?
®
Corps
2'
38
Widening ®
INT ?
DWQ
S4 (#4) ® P ? T Culvert-Road Hatters Branch ® PER ® Corps 8' 12
Widening ? INT ? DWQ
S5 (#5) ®P ? T Culvert-Road Hatters Branch ® PER ® Corps 6' 135
Crossing El INT ? DWQ
3h. Total stream and tributary impacts 323
3i. Comments: Project is utilizing 5 separate NWP 14's as agreed on previously by Mr. Jamie Sherri, USACE. Note: Hatters
Branch is known locally and on the NC Flood Maps as "Dunn Creek". It is not named on the USGS or County Soil Survey.

Page 5 of 12
PCN Form - Version 1.3 December 10, 2008 Version
6. Buffer Impacts (for DWQ)
If project will impact a protected riparian buffer, then complete the chart below. If yes, then individually list all buffer impacts
below. If an impacts require mitigation, then you MUST fill out Section D of this form.
6a.
® Neuse ?Tar-Pamlico ? Other:
Project is in which protected basin? ? Catawba ? Randleman
6b. 6c. 6d. 6e. 6f. 6g.
Buffer impact
number - Reason for impact Buffer Zone 1 impact Zone 2 impact
Permanent (P) or Stream name mitigation (square feet) (square feet)
Tem ora T required?
B1 (#2) ® P ? T Road Crossing UT to Hatters
Branch ? Yes
® No 4,590 1,809
B2 (#3) ® PEI T Road Crossing UT to Hatters
Branch ? Yes
® No 1,454 920
B3 (#4) ® P ? T Road Crossing Hatters Branch ® Nos 683 487
B4 (#5) ® P ? T Road Crossing Hatters Branch ® Nos 6,850 3,881
B5 (#6/LS"F") ® P Level Spreader Hatters Branch ? Yes 362 273
? T Bypass ® No
B6 (#7/LS"E") ® P Level Spreader Hatters Branch ? Yes 550 354
? T Bypass ®No
B7 (#8/LS"D") ® P Level Spreader UT to Hatters ? Yes 0 230
? T Bypass Branch ® No
B8 (#9/LS"B") ® P Level Spreader UT to Smith Creek ? Yes 793 283
? T Bypass ® No
B9 (LS"H") ® P ? Level Spreader UT to Hatters ? Yes 290 538
T Bypass Branch ®No
6h. Total buffer impacts 15,572 8,775
6i. Comments: Hatters Branch is known locally and on the NC Flood Maps as "Dunn Creek". It is not named on the USGS or
County Soil Survey.
Page 7 of 12
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