20080208 Ver 1_More Info Received_20080327

Michael F. Easley, Governor
William G. Ross Jr., Secretary
i- North Carolina Department of Environment and Natural Resources
>
O C Coleen H. Sullins, Director
Division of Water Quality
March 7, 2008
DWQ Project # 08-0208
Johnston County
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
Mr. Jerry Pace
13388 Buffalo Road ??
Clayton, NC 27527 (?
U ? D
Subject Property: Pace Tract MAR 2 7 2008
Ut to Big Arm Creek [030402, 27-38-1, C, NSW]
DENR -'4IAIER C1UAUTY
REQUEST FOR MORE INFORMATION %STLANDS AND STORmWATER BRANCH
Dear Mr. Pace:
On January 30, 2008, the Division of Water Quality (DWQ) received your application dated January 29,
2008 to impact 0.2 acres of 404/wetland, 139 linear feet of perennial stream and 9,642 square feet of Zone
1 Neuse River basin protected riparian buffer, and 3,113 square feet of Zone 2 Neuse River basin
protected riparian buffer to construct the proposed residential subdivisio at the site. The DWQ has
determined that your application was incomplete and/or provided inaccurate information as discussed
below. The DWQ will require additional information in order to process your application to impact
protected wetlands and/or streams on the subject property. Therefore, unless we receive five copies of the
additional information requested below, we will have to move toward denial of your application as
required by 15A NCAC 2H .0506 and will place this project on hold as incomplete until we receive this
additional information. Please provide the following information so that we may continue to review your
project.
Additional Information Requested:
1. Please provide the following items as called for on the Required Items Checklists for the Level
Spreaders:
a. The calculations of to and I for each level spreader.
b. The boundaries of the drainage easements for the level spreaders.
c. A depiction of the entire drainage area for each level spreader.
d. A final (not preliminary) site plan.
2. Please address the following issues on Sheet 5 of 6:
a. The roadway drainage system must be shown.
b. Proposed topo lines (with roadway fill) must be shown.
c. Re-orient plan so that it is consistent with Sheet 7 of 8.
d. The rip rap apron appears to be oversized,
e. Level spreader number 1 must be relocated so that it is .not upslope of the rip rap apron.
f. Level spreader number 2 is directing stormwater toward the fill slope associated with
Street "A." Please relocate this level spreader to a more appropriate location.
401 Oversight/Express Review Permitting Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604
Phone: [phone] / FAX [phone] / Internet: http://h2o.enr.state.nc.us/ncwetlands
NorthCarolina
Auura!!y
An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper
Mr. Jerry Pace
Page 2 of 2
March 7, 2008
3. Please address the following issue on Sheet 7 of 8: The construction sequence does not mention
level spreaders.
4. Please address the following issue on Sheet 8 of 8: The level spreader detail shows a bypass
channel even though it is not proposed to be included in the design.
Please submit this information within 30 calendar days of the date of this letter. If we do not receive this
requested information within 30 calendar days of the date of this letter, your project will be withdrawn
and you will need to reapply with a new application and a new fee.
This letter only addresses the application review and does not authorize any impacts to wetlands, waters
or protected buffers. Please be aware that any impacts requested within your application are not
authorized (at this time) by the DWQ. Please call Ms. Cyndi Karoly or Mr. Ian McMillan at 919-733-
1786 if you have any questions regarding or would like to set up a meeting to diuss this matter.

Cyndi Karoly, Supervisor
401 Oversight/Express Review Permitting Unit
CBKlijm
cc: Lauren Witherspoon, DWQ Raleigh Regional Office
USACE Raleigh Regulatory Field Office
File Copy
Central Files
Neal Floyd, True Line Soils, Inc., 205 W. Main Street, Clayton, NC 27520
080208PaceTract(Johnston )On_Ho ld
DS- 0a-'o 8
Dalton Engineering ,.? PROJECTNO.CJ PAGENO,
PROJECT'
and Associates, P.A.
446 East Main Street CALCULATED BY !ti I DATE a
Post Office Box 426
Clayton, NC 27528
[phone]
Fax [phone]
CHECKED BY
SUBJECT
DATE

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44b East Moln Street CALCULATED BV
Post Office Box 426 [phone] CHECKED BY
Clayton, NC 27528 Fax [phone] SUBJECT
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STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information.
!. PROJECT INFORMATION
Project name Jerry Pace Tract
Contact name Sabrina E. Davis
Phone number 919-550-4740
Date March 17, 2008
Drainage area number 1
It. DESIGN INFORMATION
For Level Spreaders Receiving Flow From a BMP
Type of BMP
Drawdown flow from the BMP cis
For Level Spreaders Receiving Flow from the Drainage Area
Drainage area
Impervious surface area
Percent impervious
Rational C coefficient
Peak flow from the 1 in/hr storm
Time of concentration
Rainfall intensity, 10-yr storm
Peak flow from the 10-yr storm
Where Does the Level Spreader Discharge?
To a bioretention cell?
To a wetland?
To a filter strip or riparian buffer?
Other (specify)
28,822 ftz
3,000 ftz
0.10
U.40
0.297747934 cfs
min
7.6 in/hr
2.262884298 cfs
(Y or N)
(Y or N)
y (Y or N) Please complete filter strip characterization below.
Filter Strip or Riparian Buffer Characterization (if applicable)
Width of grass it
Width of dense ground cover 50 it
Width of wooded vegetation it
Total width 50 ft
Slope (from level lip to to top of bank) 4.5 %
Are any draws present? n (Y or N)
Level Spreader Design
Forebay surface area 8 sq ft
Feet of level lip needed per cis 13 ft/cfs
Answer "Y" to one of the following:
Length based on the 1 in/hr storm? (Y or N)
Length based on the 10-yr, 24-hr storm? y (Y or N)
Length based on the BMP discharge rate? (Y or N)
Design flow 1.72 CIS
Is a bypass device provided? n (Y or N)
Length of the level lip 30 ft
Are level spreaders in series? n (Y or N)
OK
OK
A bypass device is not needed.
Level spreader length OK.
Form SW401-Level Spreader, Finer Strip, Restored Riparian Buffer-Rev.3 Parts I. and It. Design Summary, page 1 of 2
Bypass Channel Design (if applicable)
Does the bypass discharge through a wetland?
Does the channel enter the stream at an angle?
Dimensions of the channel (see diagram below):
M
B
W
Peak velocity in the channel during the 10-yr, 24-hr storm
Channel lining material
(Y or N) Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
ft Do not complete this section of the worksheet.
It Do not complete this section of the worksheet,
ft Do not complete this section of the worksheet.
ft Do not complete this section of the worksheet.
cfs Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
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Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.3 Parts I. and II. Design Summary, page 2 of 2
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STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part ill) must be printed, flied out and submitted along with all of the required information,
L PROJECT INFORMATION
Project name Jerry Pace Tract
Contact name Sabrina E. Davis
Phone number
Date
Drainage area number
919-5504740
March 17, 2008
II. DESIGN INFORMATION
For Level Spreaders Receiving Flow From a BMP
Type of BMP
Drawdown flow from the BMP cfs
For Level Spreaders Receiving Flow from the Drainage Area
Drainage area 12,299 ff
Impervious surface area 3,750 f{2
Percent impervious 0.30
Rational C coefficient 0.78
Peak flow from the 1 in/hr storm 0.22022573 cfs
Time of concentration min
Rainfall intensity, 1 0-yr storm 7.5 in/hr
Peak flow from the 10-yr storm 1.651692975 cfs
Where Does the Level Spreader Discharge?
To a bioretention cell? (Y or N)
To a wetland? (Y or N)
To a filter strip or riparian buffer? y (Y or N)
Other (specify)
Filter Strip or Riparian Buffer Characterization (if applicable)
Width of grass ft
Width of dense ground cover 50 ft
Width of wooded vegetation ft
Total width 50 ft
Slope (from level lip to to top of bank) 5.9 %
Are any draws present? n (Y or N)
Level Spreader Design
Forebay surface area 8 sq ft
Feet of level lip needed per cis 13 ft/cfs
Answer "Y" to one of the following:
Length based on the 1 in/hr storm? (Y or N)
Length based on the 10-yr, 24-hr storm? y (Y or N)
Length based on the BMP discharge rate? (Y or N)
Design flow 1.26 cfs
Is a bypass device provided? n (Y or N)
Length of the level lip 22 ft
Are level spreaders in series? n (Y or N)
Please complete filter strip characterization below.
OK
OK
A bypass device is not needed.
Level spreader length OK.
Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.3 Parts 1. and It. Design Summary, page 1 of 2
Bypass Channel Design (if applicable)
Does the bypass discharge through a wetland?
Does the channel enter the stream at an angle?
Dimensions of the channel (see diagram below):
M
B
W
y
Peak velocity in the channel during the 10-yr, 24-hr storm
Channel lining material
(Y or N) Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
ft Do not complete this section of the worksheet.
ft Do not complete this section of the worksheet.
ft Do not complete this section of the worksheet.
ft Do not complete this section of the worksheet.
cfs Do not complete this section of the worksheet.
Do not complete this section of the worksheet.

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Form SW401-Level Spreader, Fitter Strip, Restored Riparian Buffer-Rev.3 Parts I. and II. Design Summary, page 2 of 2

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