20030084 Ver 2_More Info Received_20080201

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KELLER ENVIRONMENTAL
ENVIRONMENTAL CONSULTANTS
January 31, 2008
Gindy Karoly
NC Division of Water Quality
401 Wetlands WQ Certification Unit
1650 Mail Service Center
Raleigh, North Carolina 27699-1650
Re: Tholes Academy
Keller Environmental Job No. 0689
DWQ EXP No. 03-0084v2
Holly Springs, North Carolina
Dear Ms. Karoly:
We are submitting the additional information requested from written
correspondence an January 23, 2008. We are requesting for NC Division of Water
Quality {DWQ) written approval under the Neuse River Riparian Buffer Rules. This
project has received 401 and 404 approval. Since we are proposing a starmwater bypass
channel through the riparian zone, we are requesting for riparian buffer authorization.
The Town of Wake Forest has been thoroughly involved with this project and their
authorized Phase II Starmwater Program permit will be acquired.
We have addressed your included written comments in the following paragraphs.
1. Diffuse Flow Provisions
A. Per DWQ requirements, all stormwater runoff from the first
inch of rainfall from the entire project site shall be detained, treated
and released within 2-5 days and at such a rate that it will be diffused
across the riparian buffer. From the breakdown of drainage areas on
the sheet with the CPS letterhead (page 1 of 1}, it appears that runoff
from sub-area 1 is bypassing the detention device. Please explain
why this portion is not being treated. It may be helpful to delineate
the drainage areas 1 A and 1 B to clarify.
This property is somewhat unusual in shape and extends east across the
stream, down an existing gravel and paved drive approximately 17-feet lower to the
existing cul-de-sac. For the Town's engineer, we wanted to show the pre-post
calculations for all of the areas bound by the property limits. Therefore, the bypass
area accounts far stream areas and some of the existing drive located to the east. The
two drainage areas are shown an the attached drainage area map.

Neuse R. Buffer Rules Re-Submittal
Tholes Academy
January 31, 2007
f'age2of3
B. Please provide calculations to show how the runoff from the
first inch of rainfall shall be released from the detention device
within 2-5 days. It may be necessary to just cap the 6.0-inch outflow
pipe and drill a hole, having a smaller orifice of appropriate size that
will release the flow at a much slower rate.
Far this project, we are sizing the level spreader based on the design guidelines as
shown on the previously submitted Level Spreader Supplement worksheet and on the
current DWQ BMP Manual. The flow has been attenuated down to discharge 1 cfs of
stormwater over the level spreader and 85-feet of thick riparian vegetation. Normally,
the design volume is the 1-inch storm, but for this design we were able to use the outlet
structure from the detention device as a splitter box and diverted the larger volume of
the 1-year storm to the level spreader and sized its length accordingly. stormwater
contra) measures for this site contra) and treat the difference between the pre-
development and post-development conditions for the 1-year 24-hour storm. There is
no increase in peak flow leaving the site from the predevelopment conditions for the 1-
year, 24-hour storm.
2. Riparian Buffer Impacts:
A. Please provide an impact map showing the zone 1 and Zone 2
impacts in detail. The table on the plans {C7.82) differs from the table
on the PCN form. Please ensure that the correct riparian buffer
impacts are shown on both the PCN form and the plan sheets.
The impact map has been added to C4.01 and the numbers have been corrected to
match the PCN form numbers.
B. The maintenance plan shown on plan sheet C4.01, item 4,
allows for reseeding and fertilization as necessary. Please revise the
statement to allow only aone-time fertilization {for establishment
purposes) in the vicinity of the level spreader or adjacent to the
riparian buffer.
The note on the Maintenance plan now allows for a one time seeding and fertilization in
the areas adjacent to the riparian buffer and in the vicinity of the level spreader.
Since we have previously acquired 401 and 404 permits, we request written approval for
Neuse River Riparian Buffer Authorization for this project. Written approval fora 401
Certification is not required ar requested.
If you should have questions or require additional clarification please feel free to contact
me at 844-7437 (office}, 749-8259 (cell} or email: jayCc?kellerenvironmental.com or Brian
Speight, P.E. at 931-4656 (cell} or email: bspeightCc?cpsengineerspa.com

Neuse R. Buffer Rules Re-Submittal
Tholes Academy
January 31, 2007
Page 3 of 3
Sincerely,
Keller Environmental, LLC
g
Jay Keller
Principal
Cc: Robert Luddy
Holly Springs, Town of Wake Forest Engineering
Attachments:
• January 23, 2008 DWQ Request for More Information letter
• Revised Site Plan Sheets C4.01 & C7.02
• Drainage Area Map
Revised PCN 1-28-OS

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Offlce IISe Oniy: Form Version Much OS
USACE Action ID No. 200320613 DWQ No. EXP No. 03-0084v2
(If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".)
L Processing
Check all of the approval(s) requested for this project:
^ Section 404 Permit ® Riparian or Watershed Buffer Rules
^ Section 10 Permit ^ Isolated Wetland Permit from DWQ
^ 401 Water Quality Certification ^ Express 401 Water Quality Certification
2. Nationwide, Regional or General Permit Number(s) Requested:
If this notification is solely a courtesy copy because written approval for the 401 Certification
is not required, check here:
4. If payment into the North Carolina Ecosystem Enhancement Program (NCEEP) is proposed
for mitigation of impacts, attach the acceptance letter from NCEEP, complete section VIII,
and check here: ^
If your project is located in any of North Carolina's twenty coastal counties (listed on page
4), and the project is within a North Carolina Division of Coastal Management Area of
Environmental Concern (see the top of page 2 for further details), check here: ^
IL Applicant Information
Owner/Applicant Information
Name: Robert Ludd
Mailing Address: 120 Weathers Street, Suite F
Youngsville, NC 27596
Telephone Number: 919-427-0790 Fax Number: 919-570-2091
E-mail Address: bob.ludd,~ptiveaire.com
2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter
must be attached if the Agent has signatory authority for the owner/applicant.)
Name: Jay Keller
Company Affiliation: Keller Environmental
Mailing Address: 7921 Haymarket Lane; Raleigh, NC 27615
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: [e-mail]
Page 1 of 8

III. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropi7ate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets na larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project: Tholes Academy
2. T.I.P. Project Number or State Project Number (NCDnT Only}:
3. Property Identification Number (Tax PIN): 1840-21
4. Location
County: Wake Nearest Town: Wake Forest
Subdivision name {include phasellot number}:
Directions to site {include road numbers/names, landmarks, etc.}: Site is located south of
Wake Forest; S. Main to Rogers Rd to Heritage Trade Drive to 3106.
S. Site coordinates {For linear projects, such as a road or utility line, attach a sheet that
separately lists the coordinates for each crossing of a distinct waterbody.}
Decimal Degrees (6 digits minimum}: N35° 57.130 °N W78° 31.212°W
6. Property size
7. Name of nearest receiving body of water: UT to Smith Creek; Stream Index # 27-23-~2)
8. River Basin: Neuse
(Note -this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://h2o.enr.state.nc.us/admin/maps/.}
9. Describe the existing conditions on the site and general land use in the vicinity of the
at the time of this application: Site is comprised of a cleared lot surrounded b1
the West, commercial development to the East, wooded to the North and new
construction to the South.
Page 2. of R

10. Describe the overall project in detail, including the type of equipment to be used: To
stormwater structures. Equipment to be used includes trackhaes, bulldozers, and
other land grading equipment.
1 L Explain the purpose of the proposed work: To construct a building for educational
purposes.
IV. Prier Prc-ject History
If jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDDT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules. April 10, 2003 - 404 Permit Issued; February 24, 2003 - 401
Certification Issued: Please refer to the Attached Permits.
V. Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
None.
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's} responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. Each impact must be
listed separately in the tables below (e.g., culvert installation should be listed separately from
riprap dissipater pads). Be sure to indicate if an impact is temporary. All proposed impacts,
permanent and temporary, must be listed, and must be labeled and clearly identifiable an an
accompanying site plan. All wetlands and waters, and all streams {intermittent and perennial)
should be shown on a delineation map, whether or not impacts are proposed to these systems.
Wetland and stream evaluation and delineation forms should be included as appropriate.
Photographs may be included at the applicant's discretion. If this proposed impact is strictly for
wetland or stream mitigation, list and describe the impact in Section VIII below. If additional
space is needed for listing or description, please attach a separate sheet.
1. Provide a written description of the proposed impacts: No impacts to Waters of the
US/State.
2. Individually list wetland impacts. Types of impacts include, but are not limited to
mechanized clearing, grading, fill, excavation, flooding, ditchingldrainage, etc. For dams,
separately list impacts due to both structure and flooding.
Page 3 of 8

3.
Wetland Impact Type of Wetland Located within Distance to Area of
Site Number Type of Impact (e.g., forested, marsh, 100-year
Floodplain Nearest
Stream Impact
(acres)
(indicate on map) herbaceous, bog, etc.) ( es/no) (linear feet)

Total Wetland Impact (acres) 0
4. List the total acreage (estimated) of all existing wetlands on the property: 0 Acres
5. Individually list all intermittent and perennial stream impacts. Be sure to identify temporary
impacts. Stream impacts include, but are not limited to placement of fill or culverts, dam
construction, flooding, relocation, stabilization activities (e.g., cement walls, rip-rap, crib
walls, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is proposed,
plans and profiles showing the linear footprint for both the original and relocated streams
must be included. To calculate acreage, multiply length X width, then divide bV 43,560.
Stream Impact
Number
(indicate on map)
Stream Name
Type of Impact
Perennial or
Intermittent? Average
Stream Width
Before Impact Impact
Length
(linear feet) Area of
Impact
(acres)

Total Stream Impact (by length and acreage) 0 0
6. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.). Open water impacts include, but are not limited to
fill, excavation, dredging, flooding, drainage, bulkheads, etc.
Open Water Impact
Name of Waterbody Type of Waterbody Area of
Site Number (if applicable) ~'Pe of Impact (lake, pond, estuary, sound, bay, Impact
(indicate on map) ocean, etc.) (acres)

Total Open Water Impact (acres) 0
7. List the cumulative impact to all Waters of the U.S. resultine from the proiect:
Stream Impact (acres): 0
Wetland Impact (acres): 0
Open Water Impact (acres): 0
Total Impact to Waters of the U.S. (acres) 0
Total Stream Impact (linear feet): 0
Page 4 of 8

8. Isolated Waters
Do any isolated waters exist on the property? ^ Yes ®No
Describe all impacts to isolated waters, and include the type of water (wetland or stream) and
the size of the proposed impact (acres or linear feet). Please note that this section only
applies to waters that have specifically been determined to be isolated by the USACE.
9. Pond Creation
If construction of a pond is proposed, associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): ^ uplands ^ stream ^ wetlands
Describe the method of construction (e.g., dam embankment, excavation, installation of
draw-down valve or spillway, etc.):
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.):
Current land use in the vicinity of the pond:
Size of watershed draining to pond: Expected pond surface area:
VII. Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts. The proposed level spreader
bypass channel through the Neuse River Riparian Buffer is needed to construct the
proposed structures.
VIII. Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on January 15, 2002, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
Page 5 of 8

If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCEEP concwrence shall be placed on hold as incomplete.
An applicant may also choose to review the current guidelines for stream restoration in DWQ's
Draft Technical Guide far Stream Work in North Carolina, available at
http: //h2o. enr.state.nc.uslncwetlands/strm~ide.html.
1. Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location {attach directions
andlor map, if affsite), affected stream and river basin, type and amount {acreage/linear feet)
of mitigation proposed {restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
The proposed project should not be required to provide mitigation for the proposed
impacts.
2. Mitigation may also be made by payment into the North Carolina Ecosystem Enhancement
Program (NCEEP). Please note it is the applicant's responsibility to contact the NCEEP at
[phone] to determine availability, and written approval from the NCEEP indicating
that they are will to accept payment far the mitigation must be attached to this form. For
additional information regarding the application process far the NCEEP, check the NCEEP
website at httpalh2a.enr.state.nc.us/wrp/index.htm. If use of the NCEEP is proposed, please
check the appropriate box on page five and provide the following information:
Amount of stream mitigation requested (linear feet}: n/a
Amount of buffer mitigation requested (square feet}: nia
Amount of Riparian wetland mitigation requested (acres}: n/a
Amount of Nan-riparian wetland ntigation requested (acres): nia
Amount of Coastal wetland mitigation requested (acres}: n/a
IX. Environmental Documentation (required by DWQ}
1. Does the project involve an expenditure of public (federal/state/local} funds or the use of
public (federallstate) land? Yes ^ No
2. If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPAISEPA)?
Nate: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at [phone] to review current thresholds for environmental documentation.
Yes ^ No ^
3. If yes, has the document review been finalized by the State Clearinghouse? If so, please
attach a copy of the NEPA or SEPA final approval letter. Yes ^ Na ^
Page 6 of 8

X. Proposed Impacts on Riparian and Watershed Buffers (required by DWG
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
1. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 02B .0243 (Catawba) 15A NCAC
2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please
identify 1? Yes ® No ^
2. If "yes", identify the square feet and acreage of impact to each zone of the riparian buffers.
If buffer mitigation is required calculate the required amount of mitigation by applying the
buffer multipliers.
Zone* Impact
(square feet) Multiplier Required
Mitigation
1 500 3 (2 for Catawba) 0
2 300 Ls 0
Total 800 0
3. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e.,
Donation of Property, Riparian Buffer Restoration /Enhancement, or Payment into the
Riparian Buffer Restoration Fund). Please attach all appropriate information as identified
within 15A NCAC 2B .0242 or .0244, or .0260. Riparian buffer mitigation is not required.
XL Stormwater (required by DWG
Describe impervious acreage (existing and proposed) versus total acreage on the site. Discuss stormwater
controls proposed in order to protect surface waters and wetlands downstream from the property. If
percent impervious surface exceeds 20%, please provide calculations demonstrating total proposed
impervious level. Total acreage: 4.6 Acres. Impervious areas: existing- 0.29 Acres;
1.38 Acres: 1.38 Ac/ 4.6 Ac = 30%
s su
roads, parking lots, driveways, roofs, paved storage areas, etc. Please refer to Table
channel will be lined with NAG P350 & will enter the perennial stream at an angle.
While under construction, temporary, custom sedimentation basins will be installed
outside of the wetlands and streams to protect them against sedimentation along with
Page 7 of 8

XII. Sewage Disposal (required by DWQ)
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.
To City of Raleigh Smith Creek Waste Water Treatment Plant.
XIII. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500} or any Buffer Rules?
Yes ^ No
Is this an after-the-fact permit application? Yes ^ No
XIV. Cumulative Impacts (required by DWQ)
Will this project (based. on past and. reasonably anticipated future impacts) result in additional
development, which could impact nearby downstream water quality? Yes ^ No
If yes, please submit a qualitative or quantitative cumulative impact analysis in accordance with
the most recent. North Carolina Di~nsion of Water Quality policy posted on our website at
http:/Ih2o.enr.state.nc.uslncwetlands. If no, please provide a short narrative description: This
project will be 100% build-out of the lot (8).
XV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
Threatened Species, accessibility problems, or other issues outside of the applicant's control}.
~~~f
ApplicantlAgent's Signature Date
(Agent's signature, is valid. only if an authorization letter from the applicant is provided.)
Page 8 of 8

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