20100510 Ver 2_401 Application_20110111

00- 0 fivers ( 1) v? 1 ?? Engineers
&Associates, Inc. Planners
Since1918
nIA/ Surveyors
TRANSMITTAL
? Reviewed
? Rejected
? Corrected
TO: Mr. Ian McMillan, Acting Supervisor DATE: 9/15/10 JOB NO.: 2008107
401 Oversight/Express Review Permitting Unit RE: Chatham County Law Enforcement Center
512 North Salisbury Street Parking Lot Modifications & Expansion
Raleigh, NC 27604
WE ARE SENDING YOU
? Shop Drawings
? Change Order
? Attached
? Prints
® Other:
? Under separate cover via the following items:
® Plans ? Samples ? Specifications ? Copy of Letter
COPIES DATE NO. DESCRIPTION
5 PCN application Forms (1 Original, 4 Copies)
5 BMP O&M agreement (1 Original, 4 Copies)
5 Sets of Plans
5 Sets of Stormwater Calculations
1 _ CD of plans in Tiff format
THESE ARE TRANSMITTED as checked below:
? For approval
? For your use
? As Requested
® For Review and comment
REMARKS:
c:
Q StaTT ServiC@S
? Revise and resubmit
? Submit copies for distribution
? Return corrected prints
WL-FLA+'OS EXPRESS PER141T
JAN - 5 2011
David Hughes, Chatham County
If enclosures are not as noted, kindly notify us at once.
M:\Chatham County\2008107 - LEC\ADMIN\C - Correspondence\110105 Ian McMillan DENR.doc
6131 Falls of Neuse Rd., Suite 300 • Raleigh, NC 276209 • [phone] • FAX [phone]
Email: rivers(a.riversandassociates.com
RIVERS & ASSOCIATES, INC.
David L. Smith, P.E.
00-
Iq
fivers
&Associatesjnc.
Since1918
Ian McMillan, Acting Supervisor
401 Oversight/Express Review Permitting Unit
512 North Salisbury Street
Raleigh, North Carolina 27604
January 4, 2011
WETLANDS EXPRESS PERMIT
E-55 DIV
ISION OF WATER QUALITY
Subject Property: Chatham County Law Enforcement Center Parking Lot Mod
and Expansion
UT to Robeson Creek [030604, 16-38-(3), WSIV, NSW]
DWQ Project # 2010-0510
Dear Mr. McMillan:
Attached are 5 copies of the PCN (1 original and 4 copies), 5 copies of the Plans
and Calculations, 2 copies of the BMP O&M agreements (1 original and 1 copy)
and one CD of the Plan Drawings in TIFF format.
Revisions for this submittal (January 4, 2011):
1. All references to future development impervious areas were removed from
the calculations, narratives and drawings.
2. The bio-retention basin was redesigned to provide a minimum of 2'
clearance to the seasonal high water table.
• The bio-retention basin was resized to exclude capacity for future
impervious and to reduce the width of the basin.
• The soil media depth was reduced from 3' to 2' to raise the invert of
the under drain system to a minimum of 2' above the seasonal high
water table.
• The bio-retention basin was converted from a planted basin to a
sodded basin to accommodate the reduced depth of soil media.
3. An impermeable geo-membrane liner was added to the forebay to prevent
short circuiting.
Please give me a call at [phone] if you have any questions or comments.
Sincerely,
n
David L. Smith, P.E.
Project Manager
Engineers
' Planners
Surveyors
M:\Chatham County\2008107 - LEC\ADMIN\D - Permits\DWQ 3rd Submittal Cover Letter.doc
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Pre-Construction Notification (PCN) For ---?
A. Applicant Information JAN - 5 2011
1. Processing
1a. Type(s) of approval sought from the Corps: ? Section 404 Permit ?' S?atob;01,rlltf i,'"
1 b. Specify Nationwide Permit (NWP) number: N/A or General Permit (GP) number. N/A
1 c. Has the NWP or GP number been verified by the Corps? ? Yes ?X No
1 d. Type(s) of approval sought from the DWQ (check all that apply):
? 401 Water Quality Certification - Regular ? Non-404 Jurisdictional General Permit
? 401 Water Quality Certification - Express 2 Riparian Buffer Authorization
1 e. Is this notification solely for the record
because written approval is not required? For the record only for DWQ
401 Certification:
? Yes 0 No For the record only for Corps Permit:

? Yes 0 No
If. Is payment into a mitigation bank or in-lieu fee program proposed for
mitigation of impacts? If so, attach the acceptance letter from mitigation bank
or in-lieu fee program.
? Yes ?X No
1g. Is the project located in any of NC's twenty coastal counties. If yes, answer 1h
below. ? Yes ?x No
1h. Is the project located within a NC DCM Area of Environmental Concern (AEC)? ? Yes Z No
2. Project Information
2a. Name of project: Chatham County Law Enforcement Center Parking Lot Modification and Expansion
2b. County: Chatham
2c. Nearest municipality / town: Pittsboro
2d. Subdivision name: N/A
2e. NCDOT only, T.I.P. or state project no: N/A
3. Owner Information
3a. Name(s) on Recorded Deed: Chatham County
3b. Deed Book and Page No. D.B. 391, PG. 0301 / D.B. 514, PG. 0163
3c. Responsible Party (for LLC if
applicable): David Hughes
3d. Street address: 295 West Street
3e. City, state, zip: Pittsboro, NC 27312
3f. Telephone no.: [phone]
3g. Fax no.: [phone]
3h. Email address. [e-mail]
Office Use Only:
Corps action ID no.
DWQ project no.
Form Version 1.4 January 2009
h:, l

Page 1 of 10
PCN Form - Version 1.4 January 2009
e .. ?..
4. Applicant Information (if different from owner)
4a. Applicant is: ? Agent ? Other, specify:
4b. Name:
4c. Business name
(if applicable):
4d. Street address:
4e. City, state, zip:
4f. Telephone no.:
4g. Fax no.:
4h. Email address:
5. Agent/Consultant Information (if applicable)
5a. Name: David Smith, P.E.
5b. Business name
(if applicable): Rivers & Associates, Inc.
5c. Street address: 6131 Falls of Neuse Rd. Suite 300
5d. City, state, zip: Raleigh, NC 27609
5e. Telephone no.: [phone]
5f. Fax no.: [phone]
5g. Email address: [e-mail]
Page 2 of 10
4. .
B. Project Information and Prior Project History
1. Property Identification
1a. Property identification no. (tax PIN or parcel ID): 9741-56-8974
1 b. Site coordinates (in decimal degrees): Latitude: 35.7194 Longitude: 79.1822
1 c. Property size: 5.6 acres
2. Surface Waters
2a. Name of nearest body of water to proposed project: Robeson Creek 16-38-(3)
2b. Water Quality Classification of nearest receiving water: WS-IV, NSW
2c. River basin: Cape Fear
3. Project Description
3a. Describe the existing conditions on the site and the general land use in the vicinity of the project at the time of this
application:
(see attached description)
3b. List the total estimated acreage of all existing wetlands on the property: 0
3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property: 745
3d. Explain the purpose of the proposed project:
Parking lot modification and expansion.
3e. Describe the overall project in detail, including the type of equipment to be used:
(see attached description)
4. Jurisdictional Determinations
4a. Have jurisdictional wetland or stream determinations by the
Corps or State been requested or obtained for this property /

project (including all prior phases) in the past? ? Yes ? No ? Unknown

Comments:
4b. If the Corps made the jurisdictional determination, what type
of determination was made? Prelimina
? Preliminary ?X Final
4c. If yes, who delineated the jurisdictional areas?
Name (if known): Martin Richmond (owQ) Agency/Consultant Company: NCNENR/DwQ
Other:
4d. If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation.
5/6/10 (Field)
5. Project History
5a. Have permits or certifications been requested or obtained for
this project (including all prior phases) in the past? ? Yes Z No ? Unknown
5b. If yes, explain in detail according to "help file" instructions.
6. Future Project Plans
6a. Is this a phased project? ? Yes Q No
6b. If yes, explain.
Page 3 of 10
PCN Form - Version 1.4 January 2009
- ?
C. Proposed Impacts Inventory
1. Impacts Summary
1a. 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.
Wetland impact
number
Permanent (P) or
Temporary T 2b.
Type of impact 2c.
Type of wetland 2d.
Forested 2e.
Type of jurisdiction
Corps (404,10) or
DWQ (401, other) 2f.
Area of
impact
(acres)
W1 Choose one Choose one Yes/No
W2 Choose one Choose one Yes/No
W3 Choose one Choose one Yes/No
W4 Choose one Choose one Yes/No
W5 Choose one Choose one Yes/No
W6 - Choose one Choose one Yes/No
2g. Total Wetland Impacts: 0
2h. Comments:
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.
Stream impact
number
Permanent (P) or
Temporary (T) 3b.
Type of impact 3c.
Stream name 3d.
Perennial (PER) or
intermittent (I NT)? 3e.
Type of
jurisdiction 3f.
Average
stream
width
(feet) 3g
Impact
length
(linear
feet)
S1 Choose one
S2 - Choose one
S3 - Choose one -
S4 - Choose one -
S5 Choose one -
S6 Choose one
3h. Total stream and tributary impacts o
31. Comments:
Page 4 of 10
PCN Form - Version 1.4 January 2009
4. Open Water Impacts
If there are proposed impacts to lakes, ponds, estuaries, tributaries, sounds, the Atlantic Ocean, or any other open water of
the U.S. then individual) list all open water impacts below.
4a.
Open water
impact number
Permanent (P) or
Temporary T 4b.
Name of waterbody
(if applicable) 4c.

Type of impact 4d.

Waterbody
type 4e.

Area of impact (acres)
01 Choose one Choose
02 Choose one Choose
03 Choose one Choose
04 Choose one Choose
4f. Total open water impacts 0
4g. Comments:
5. Pond or Lake Construction
If and or lake construction proposed, then complete the chart below-
5a.
Pond ID number 5b.
Proposed use or
purpose of pond 5c.
Wetland Impacts (acres) 5d.
Stream Impacts (feet) 5e.
Upland
(acres)
Flooded Filled Excavated Flooded Filled Excavated
P1 Choose one
P2 Choose one
5f. Total:
5g. Comments:
5h. Is a dam high hazard permit required? ? Yes ? No If yes, permit ID no:
5i. Expected pond surface area (acres):
5j. Size of pond watershed (acres):
5k. Method of construction:
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. Project is in which protected basin? ? Neuse ? Tar-Pamlico ? Catawba ? Randleman ?X Other:
6b.
Buffer Impact
number-
Permanent (P) or
Temporary T 6c.
Reason for impact 6d.
Stream name 6e.
Buffer
mitigation
required? 6f.
Zone 1
impact
(square
feet 6g.
Zone 2
impact
(square
feet
61 P burp outfali un-named tributary to Robison Creek No 564 496
82 Yes/No
B3 Yes/No
B4 Yes/No
B5 Yes/No
B6 Yes/No
6h. Total Buffer Impacts: 564 496
6i. Comments:
Page 5 of 10
D. Impact Justification and Mitigation
1. Avoidance and Minimization
1a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project.
Some existing impervious areas that currently drain to the Southern portion of the site have been re-routed to the proposed Bio-retention basin to
offset proposed impervious areas that will drain to the southern portion of the site. BMP & outfall required as an alternate to diffuse flow (buffer to steep
by guidance).
1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
No Riprap will be placed in the riparian buffer, grassed permanent swale linings will be used in the Bio-retention basin emergency spillway to dissipate
flow and control erosion.
2. Compensatory Mitigation for Impacts to Waters of the U.S. or Waters of the State
2a. Does the project require Compensatory Mitigation for
impacts to Waters of the U.S. or Waters of the State? ? Yes ? No
2b. If yes, mitigation is required by (check all that apply): ? DWQ ? Corps

2c. If yes, which mitigation option will be used for this
project? ? Mitigation bank

E-1 Payment to in-lieu fee program
? Permittee Responsible Mitigation
3. Complete if Using a Mitigation Bank
3a. Name of Mitigation Bank:

3b. Credits Purchased (attach receipt and letter) Type: Choose one
Type: Choose one
Type: Choose one Quantity:
Quantity:
Quantity:
3c. Comments:
4. Complete if Makin a Payment to In-lieu Fee Program
4a. Approval letter from in-lieu fee program is attached. ? Yes
4b. Stream mitigation requested: linear feet
4c. If using stream mitigation, stream temperature: Choose one
4d. Buffer mitigation requested (DWQ only): square feet
4e. Riparian wetland mitigation requested: acres
4f. Non-riparian wetland mitigation requested: acres
4g. Coastal (tidal) wetland mitigation requested: acres
4h. Comments:
5. Complete if Using a Permittee Responsible Mitigation Plan
5a. If using a permittee responsible mitigation plan, provide a description of the proposed mitigation plan.
Page 6 of 10
PCN Form - Version 1.4 January 2009
i
6. Buffer Mitigation (State Regulated Riparian Buffer Rules) - required by DWQ
6a. Will the project result in an impact within a protected riparian buffer that requires Yes ?X No
buffer mitigation?
6b. If yes, then identify the square feet of impact to each zone of the riparian buffer that requires mitigation. Calculate the
amount of mitigation required.
6c. 6d. 6e.
Zone Reason for impact Total impact Multiplier Required mitigation
(square feet) (square feet)
Zone 1 3 (2 for Catawba)
Zone 2 1.5
6f. Total buffer mitigation required:
6g. If buffer mitigation is required, discuss what type of mitigation is proposed (e.g., payment to private mitigation bank,
permittee responsible riparian buffer restoration, payment into an approved in-lieu fee fund).
6h. Comments:
Page 7 of 10

E. Stormwater Management and Diffuse Flow Plan (required by DWQ)
1. Diffuse Flow Plan
1a. Does the project include or is it adjacent to protected riparian buffers identified fX] Yes ? No
within one of the NC Riparian Buffer Protection Rules?
1 b. If yes, then is a diffuse flow plan included? If no, explain why.
? Yes Q No
2. Stormwater Management Plan
2a. What is the overall percent imperviousness of this project? 37.9%
2b. Does this project require a Stormwater Management Plan? ? Yes No
2c. If this project DOES NOT require a Stormwater Management Plan, explain why:
Local i s oro rues in effect. Project falls under low density per Pittsboro rules based on proposed increase in impervious surface. New impervious
represents 16.2% of site.
2d. If this project DOES require a Stormwater Management Plan, then provide a brief, narrative description of the plan:
NIA
2e. Who will be responsible for the review of the Stormwater Management Plan? Nla
3. Certified Local Government Stormwater Review
3a. In which local government's jurisdiction is this project? Town of Pittsboro
? Phase II
? NSW
3b. Which of the following locally-implemented stormwater management programs ? USMP
apply (check all that apply): ? Water Supply Watershed
? Other:
3c. Has the approved Stormwater Management Plan with proof of approval been ? Yes X? No
attached?
4. DWQ Stormwater Program Review
?Coastal counties
?HQW
4a. Which of the following state-implemented stormwater management programs apply ?ORW
(check all that apply):
?Session Law 2006-246
? Other:
4b. Has the approved Stormwater Management Plan with proof of approval been ? Yes X? No
attached?
5. DWQ 401 Unit Stormwater Review
5a. Does the Stormwater Management Plan meet the appropriate requirements? ? Yes ? No
5b. Have all of the 401 Unit submittal requirements been met? ? Yes ? No
Page 8 of 10
PCN Form - Version 1.4 January 2009

F. Supplementary Information
1. Environmental Documentation (DWQ Requirement)
1 a. Does the project involve an expenditure of public (federal/state/local) funds or the Yes ? No
use of public (federal/state) land?
1 b. If you answered "yes" to the above, does the project require preparation of an
environmental document pursuant to the requirements of the National or State ? Yes r]X No
(North Carolina) Environmental Policy Act (NEPA/SEPA)?
1c. If you answered "yes" to the above, has the document review been finalized by the
State Clearing House? (If so, attach a copy of the NEPA or SEPA final approval
letter.) ? Yes ? No
Comments:
2. Violations (DWQ Requirement)
2a. Is the site in violation of DWQ Wetland Rules (15A NCAC 2H .0500), Isolated
Wetland Rules (15A NCAC 2H .1300), DWQ Surface Water or Wetland Standards, ? Yes ? No
or Riparian Buffer Rules (15A NCAC 2B .0200)?
2b. Is this an after-the-fact permit application? ? Yes No
2c. If you answered "yes" to one or both of the above questions, provide an explanation of the violation(s):
3. Cumulative Impacts (DWQ Requirement)
3a. Will this project (based on past and reasonably anticipated future impacts) result in ? Yes ?X No
additional development, which could impact nearby downstream water quality?
3b. If you answered "yes" to the above, submit a qualitative or quantitative cumulative impact analysis in accordance with the
most recent DWQ policy. If you answered "no," provide a short narrative description.
4. Sewage Disposal (DWQ Requirement)
4a. Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of wastewater generated from
the proposed project, or available capacity of the subject facility.
No additional wastewater will be generated by this protect.
Page 9 of 10
PCN Form - Version 1.4 January 2009

5. Endangered Species and Designated Critical Habitat (Corps Requirement)
5a. Will this project occur in or near an area with federally protected species or
habitat? ? Yes ? No
5b. Have you checked with the USFWS concerning Endangered Species Act
impacts? ? Yes ?X No
5c_ If yes, indicate the USFWS Field Office you have contacted. -
5d. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical
Habitat?
6. Essential Fish Habitat (Corps Requirement)
6a. Will this project occur in or near an area designated as essential fish habitat? ? Yes ? No
6b. What data sources did you use to determine whether your site would impact Essential Fish Habitat?
7. Historic or Prehistoric Cultural Resources (Corps Requirement)
7a. Will this project occur in or near an area that the state, federal or tribal
governments have designated as having historic or cultural preservation
status (e.g., National Historic Trust designation or properties significant in
North Carolina history and archaeology)?
? Yes ?X No
7b. What data sources did you use to determine whether your site would impact historic or archeological resources?
8. Flood Zone Designation (Corps Requirement)
8a. Will this project occur in a FEMA-designated 100-year floodplain? ? Yes 0 No
8b. If yes, explain how project meets FEMA requirements:
8c. What source(s) did you use to make the floodplain determination?
DFIRM PANEL NUMBER 9741
latA?l.IcS ??oCehl ?. f U -s-110
Applicant/Agent's Printed Name Applicant/Agent's Signature
(Agent's signature is valid only if an authorization
letter from the applicant is provided.) Date
Page 10 of 10