HomeMy WebLinkAbout20050732 Ver 37_Authorization Certificate_20180327WATERSHED PROTECTION DIVISION
Environmental Quality Department
CHATHAM COUNTY P.O. Box 548
NORTH CAROLINA Pittsboro, NC 27312
PHONE: ""' 545-8314
Fax: (919) 542-2698 • E-mail: brian.burkhart@chathamnc.org • Website: www.chathamnc.org
March 27, 2018
Michael Meyers
Old North State Water Company, LLC
600 University Park Place, Suite 275
Homewood, AL 35209
AUTHORIZATION of Jordan Lake Water Supply Watershed Riparian Buffer Protection
Rules (Watershed Protection Ordinance Section 304(,1) 4 and 15A NCAC 2B .0267)
Authorization Certificate
Project Name: Briar Chapel Force Main and Re -use Waterline
Dear Mr. Meyers,
You have our authorization, in accordance with the Chatham County Watershed Protection
Ordinance and any conditions listed below, to temporarily impact approximately 2,214 ft2 of the
protected riparian buffers associated with Pokeberry Creek and its wetlands for the purpose of
installing a 14" sanitary sewer forcemain and a 12" re -use waterline as described within your
application submitted March 9, 2018 and revised on March 21, 2018, and on the provided Buffer
Impacts Maps. Impacts for this project are limited to the inner and outer portions of Zone 2 and
will consist of a 20 -ft wide by 65 -ft long clearing within the buffer for placement and operation
of bore and jack equipment. Impacts to the riparian buffers are minimized and will only occur
on the western side of Pokeberry Creek. Crossing of Pokeberry Creek and its associated
wetlands will utilize two (2) existing 16" encasement pipes that were previously installed;
therefore, no direct impacts to surface waters is anticipated. Both encasement pipes extend
beyond the eastern limits of the riparian buffers therefore all activities, including bore and jack
equipment, will be located outside of the eastern buffers.
Following the completion of construction activities, the 20 -ft wide by 65 -ft long clearing within
the riparian buffer will be stabilized with a native permanent seed mix in accordance with the
Permanent Seeding Schedule provided on Sheet 18 of the approved Construction Drawings and
Sediment & Erosion Control Plans. All excavated areas within the riparian buffer are proposed
to be returned to existing conditions and contours. Per your application this review and
authorization is only valid for those impacts stated above. In addition, you should obtain or
otherwise comply with any other required federal, state or local permits before you proceed with
your project including (but not limited to) Erosion and Sediment Control and Non -discharge
regulations.
This authorization certification is for the purpose and design that you described in your
application. If you change your project, you must notify us and you may be required to send us a
new application. If the property is sold, the new owner must be given a copy of this
authorization letter and is thereby responsible for complying with all conditions. This
authorization requires you to follow the conditions listed below.
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The Additional Conditions of the Certification are:
1. Impacts Approved
The following impacts are hereby approved as long as all of the other specific and
general conditions of this Certification are met. No other impacts are approved including
incidental impacts:
Temporary Impacts(Utility Installation
Amount Approved Units
Plan Location or Reference
Perennial Stream
283 (square ft.)
Project Impacts Inventory,
Buffers (Zone 2
Buffer Impacts Maps Sheet 2
Inner
Perennial Stream
1,931 (square ft.)
Project Impacts Inventory,
Buffers (Zone 2
Buffer Impacts Maps Sheet 2
Outer
2. No Waste, Spoil, Solids, or Fill of Any Kind
No waste, spoil, solids, or fill of any kind shall occur in riparian areas beyond the
footprint of the impacts depicted in the Pre -Construction Notification. All construction
activities, including the design, installation, operation, and maintenance of sediment and
erosion control Best Management Practices, shall be performed so that no violations of
county riparian buffer or state water quality standards, statutes, or rules occur.
3. Diffuse Flow
An additional condition is that all stormwater shall be directed as diffuse flow at non-
erosive velocities through the protected stream buffers and will not re -concentrate before
discharging into the stream as identified within Section 304(J)2 of the Watershed
Protection Ordinance.
4. Protective Fencing
The outside buffer boundary and along the construction corridor within these boundaries
approved under this authorization shall be clearly marked with orange warning fencing
(or similar high visibility material) for the areas that have been approved to infringe
within the buffer, stream channel or water prior to any land disturbing activities to ensure
compliance with the Watershed Protection Ordinance.
5. Certificate of Completion
Upon completion of all work approved within this authorization, and any subsequent
modifications, the applicant is required to certify that the completed project is in
accordance with this buffer authorization and shall submit actual `as -built' plans.
6. Deed Notifications
Deed notifications or similar mechanisms shall be placed on all retained protective
buffers in order to assure compliance for future buffer impact. These mechanisms shall
be put in place at the time of recording of the property, or easements, whichever is
appropriate.
Any disputes over determinations regarding this Authorization of Approvable Impacts
(associated with the approved buffer impacts) shall be referred in writing to the Director of the
Division of Water Resources, c/o the 401 & Buffer Permitting Unit. The Director's decision is
subject to review as provided in G.S. 150B Articles 3 and 4.
The mailing address for the 401 & Buffer Permitting Unit is:
Ms. Karen Higgins
1650 Mail Service Center
Raleigh, NC 27699-1650
Telephone: 919-807-6300, Facsimile: 919-807-6494
This Authorization shall expire five (5) years from the date of this letter.
This letter completes the review of the "No Practical Alternatives" determination under Section
304(I) and 15A NCAC 2B .0267. If you have any questions or would like a copy of the buffer
rules, please call Drew Blake at (919) 545-8394. This letter does not authorize any impacts to
either Waters of the United States or Waters of the State. Please contact the US Army Corps of
Engineers (USACE) or NC Division of Water Quality (DWQ) if any impacts are proposed to
either of these waters.
Sincerely,
Mr. Brian Burkhart, P.E.
Chatham County Watershed Administrator
cc: Paul Wojoski, NC DWR 401/Buffer Coordinator
Andy Williams, USACE Raleigh Regulatory Field Office
Jason Sullivan, Chatham County Planning Director
Rachael Thorn, Chatham County Watershed Protection Division Supervisor
File Copy
Enclosures: Buffer Impact Narrative
Riparian Buffer Authorization Application
Buffer Impacts Maps
BRIAR CHAPEL
SD EAST FORCEMAIN
CHATHAM COUNTY, NC
BUFFER IMPACT NARRATIVE
March 19, 2018
CE CROUP
Phone: (919) 367-9790 License # C-1739
I. INTRODUCTION
The proposed development is for approximately 16,300 linear feet of 14" sanitary
sewer forcemain and 13,800 linear feet of 12" re -use waterline. The project will begin
at the SD East lift station, continue north along Highway 15/501 before turning west
to follow along Taylor Road, continuing along Catullo Run, where it turns west to cut
across Pokeberry Creek. It continues along the northern edge of a section of Briar
Chapel Subdivision and eventually terminating on the northern side of the existing
wastewater treatment plant, owned and operated by Old North State Water
Company.
The general topography of the project area is mixed, with elevations ranging from
392' to 561' above mean sea level. The highest point of the route is near the
wastewater treatment plant while the low point is at the crossing of Pokeberry Creek.
The project area is composed of several different land covers including impervious
surfaces, open space and wooded areas. Soils in the planned route include Chewacla
and Wehadkee (Cha), Helena Sandy Loam (HeC), Udorthents (UdC), and Wedowee
Sandy Loams (WdC, WdE, WeB, WeC, WeD, and WeE). The project area falls
within the FEMA Flood Insurance Rate Maps 3710976500K, 3710977500K and
3710977400J. A portion of the project lies within the floodplain of Pokeberry Creek.
There are three areas where the forcemain and re -use waterline construction will
cross existing buffers. For the two intermittent buffers, the proposed boring will span
the entire buffer underground and there will be no disturbance in the actual stream
buffers, therefore these areas will not require permitting through Chatham County.
In Buffer Impact Area 1, where the lines cross Pokeberry Creek the encasement pipes
end in the outer 50' of the 100' buffer (Zone 2), therefore this is the only area where
with disturbance that could require mitigation. The impacted area is to be replanted
by the contractor and will be regarded as a temporary impact. This stretch is
approximately 65 linear feet of trenching located in Zone 2, therefore it will fall into
the "allowable" category on the mitigation determination sheet.
II. DETAILED PROJECT OVERVIEW
The project starts at a proposed pump station located in the SD East Commercial
Center within the Briar Chapel Development. The disturbance for the area where the
pump station is located was previously permitted through Chatham County by
McKim and Creed. Once the forcemain reaches the edge of the SD East
Development, it will be installed under 15/501 via an existing 24" steel encasement
pipe that was previously permitted through the NCDOT encroachment process.
Throughout this run of the project, the existing erosion control measures for the SD
East development will be utilized along with the temporary mulch tubes on the
downhill side of the excavation.
From there the project makes its way along Highway 15/501, Taylor Road and Catullo
Run. At the intersection of Highway 15/501 and Taylor Road, the project picks up
the proposed 12" Re -use Waterline. It will connect with the existing re -use waterline
that was previously permitted through Chatham County and the NCDOT. Both of
the lines will be installed in the same trench but will be separated vertically by 15".
The approximate trench width is 7.5'. Along this section of the project, temporary
mulch tubes will be utilized on the downhill side of the excavation. Where the
forcemain and re -use waterline are installed in the centerline of existing roadside
ditches, temporary wattles will be used in -lieu of stone check dams to reduce
velocities in the disturbed swales.
After the project crosses under Catullo Run (via jack and bore), it goes across raw land
that is currently owned by Briar Chapel and is planned to be a residential
development. This parcel has a 100' buffer that runs along the southern property line
and the mains will run just to the north of that undisturbed buffer. There are two
buffer crossings in this section, one of which is to be permitted through Chatham
County. Due to the location of Pokeberry Creek as well as a branch that both span the
entire property, both must be crossed to accomplish the goal of the project. The first
crossing over the branch of Pokeberry, an Intermittent Buffer, is located a few
hundred feet into the property west of Catullo Run. Both mains will be installed via a
jack and bore operation. The borings will span the entire width of the buffer;
therefore, the buffer will be entirely undisturbed, therefore will not require
permitting. Buffer Impact Area 1 is the crossing of Pokeberry Creek. There are two
(2) existing 16" encasement pipes, that run the entire width of the existing wetland,
that will be utilized at this location. The mains will reduce outside of the wetland to
a pipe size that will fit the existing encasement pipes. In utilizing the existing
encasement pipes, the disturbance is limited. The only buffer impacts that will occur
outside of the encasement pipe crossings will be in the outer Zone 2 buffer on the
west side of Pokeberry Creek, as the existing encasement pipes end 50' outside of the
wetland boundary. From there, the mains will be installed outside of the Pokeberry
Creek buffer and under Great Ridge Parkway. This impacted area is to be replanted
and maintained as a requirement in to the contractor, therefore the impact is
considered temporary. The permanent seeding schedule is located on the erosion and
sediment control details in the construction plans. All this section of the project will
utilize the temporary mulch tubes on the downhill side of the disturbance.
The next section of the project will be installed behind some existing residences and
outside of any buffered area, except one unavoidable crossing behind the lots on Old
Piedmont Circle. Due to the existing lot layout, there is no option to direct the route
of the lines around the buffer. This is an Ephemeral buffer crossing along this section
and the mains will be installed via jack and bore under the entire buffered area. Thus,
there will be no disturbance inside the buffer and this location will not require
permitting either. Along the buffer, watercourse buffer fence will be utilized for
erosion control. In all other areas, temporary mulch tubes will be installed along the
downhill side of excavation. A section of the installation will encroach into the
backyards of several existing homes. There is an existing easement that the proposed
installation will be fully within and Newland will coordinate the construction
activities with the current homeowners.
The final stretch of the project will cross under a Duke Energy Transmission Line
easement near the new tennis facility for Briar Chapel and down the north side of the
wastewater treatment plant effluent pond.
CHATHAM COUNTY
ENVIRONMENTAL QUALITY DEPARTMENT
CHATHAM COUNTY WATERSHED PROTECTION DIVISION
MONTH CAKOktNA
Website: www.chathamne.org
RIPARIAN BUFFER AUTHORIZATION APPLICATION
Double-click the boxes to select 'checked' or'unchecked'. This is an un -protected document to allow as much user
flexibility as possible. Changes to, or deletions of, content will not be tolerated. Please provide as much detail as
possible to ensure prompt review and response to this application. Include maps or other graphics and photographs
available. If completed by hand, you are encouraged to utilize extra sheets of paper as necessary.
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PROJECT INFORMATION
Is the project within the Jordan Lake Watershed?
® Yes ❑No
!s a change in lot configuration proposed?
Yes ONo
Is payment into a mitigation bank or in -lieu fee program
proposed for mitigation of impacts? If yes, attach the
acceptance letter from mitigation bank or in -lieu fee Rrogram.
❑ Yes ®No
Does the project require Corps of Engineers (Corps) or NC
Division of Water Ouali NC DWQ approval?__
M Yes ONo
Name of Project:
Briar Chapel Forcemain
Nearest Road Intersection:
NC HWY 151501 & Taylor Road
Subdivision Name:
Briar Chapel
OWNER INFORMATION
Name(s) on Recorded
Deed:
Briar Chapel Community Association, Inc.
Deed Book and Page No.:
2016 1899 0974
Responsible Party (for LLC
If applicable):
Old North State Water Company, LLC.
Street Address:
1600 Briar Chapel Parkway
City, State, Zip:
Chapel Hill, NC, 27516
Telephone No.:
919-951-0700
Fax No.:
919-951-0701
Email Address:
gbrowne@newlandco.com
APPLICANT INFORMATION (if different from owner)
An a ent authorization letter is required if applicant is not the owner
Applicant Is:
0 A ent ❑ Other, specify:
Name:
Michael Meyers
Business Name (if
applicable):
Old North State Water Company, LLC.
Street Address:
600 University Park Place, Suite 275
City, State, Zip:
Homewood, AL 35209
Telephone No:
919 235-4900
Fax No:
Email Address:
mme ers envirolink.com
PROJECT INFORMATION AND PRIOR PROJECT HISTORY
Property Identification
Property No. AKPAR :
9765 00 93 2747
Coordinates dd.ddddd :
Latitude: 35.82018 Longitude: -79.10415
Property size ac.:
17.410
Surface Waters
Name of nearest body of
water:
Pokeberry Creek
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Project Description
Describe the existing conditions on the site and the general land use in the vicinity of the project at the
time of this application:
The forcemain and re -use waterline route runs alongside Taylor Road and then borders the Briar Chapel
subdivision.
Explain the purpose of the proposed project:
The proposed project is an extension of forcemain and a re -use waterline to connect pump station on
Hwy 151501 at the intersection of Andrews Store Rd. to the Briar Chapel wastewater treatment facility.
Describe the overall project in detail, including the type of equipment to be used:
The forcemain and re -use waterline will mostly be installed in a trench using a trackhoe. All bores will be
made using bore and jack equipment.
Total estimated acreage of all wetlands on the property:
NIA
Total estimated acres a of all FEMA floodpiains on the property (SFHA):
NIA
Total linear feet of all streams on the property (Perennial, Intermittent, and NIA
Ephemeral :
Jurisdictional Determinations
Have jurisdictional wetland or stream determinations by
®Yes ❑No Comments:
the Corps or NC DWQ been Requested for this property/
project(including allphases) in thepast?
AID# SAW -200121252
If yes. list the dates the determinations wereprovided:
07/22/05
Who delineated the jurisdictional areas (name):
Agency 1 Consulting Company 1 Other:
Soil and Environmental Consultants
_
_Project History
Have permits or certifications been requested or obtained
EDYes ®No Comments:
for this project including all priorphases) in thepast?
If yes, explain in detail:
Future Project Plans
Is this a phased project?
Yes ®No Comments:
If yes, explain-
PROJECT IMPACTS INVENTORY
Impacts Summary:
Which types of buffers will be impacted by the ro'ect? check all that apply)
®Ephemeral (E, 30') ®Intermittent (i, 50') MPerennial (P, 100') ❑Perennial Water Body (WB, 50')
❑Wetland , 50' ❑FEMA Floodplain FP, extents
Buffer Impacts, reference each to attached fi ure or illustration:
Buffer Impact number—
permanent (P) or
Temporary (T)
Purpose 1 Type
of Impact
Stream Name: use name Buffer
printed on USGS 7.5 minute Type
topographic map, or UT
(unnamed tributary of) name on
USGS ma
Square
Feet
B1 - Area 1 Zone 2 T
Utility Crossing
Pokeberry Creek P
283
B2 - Area 1 Outer T
Utility Crossing
Pokeberry Creek P
1,931
Add rows as needed to list all buffer impacts separately. For buffers in the Jordan Lake Watershed,
report i, P, and WB impacts as (Zone 1) first 30 -feet, and (Zone 2) 30-50 feet landward. List any buffer
impacts beyond Zone 2 normally.
Avoidance and Minimization
Specifically describe measures taken to avoid or minimize the proposed impacts in designing the project.
When selecting the route for the forcemain and re -use waterline, avoiding buffer crossing was a main
consideration, however the crossing of Pokeberry Creek was inevitable when connecting the pump
station to the wastewater treatment facility. The buffered areas in the route were avoided as much as
possible. Bore and jack construction will be utilized to eliminate impacts at two buffer crossings by
spanning the entire buffer underground, with bore pits located outside of the buffers. At the Pokeberry
creek crossing, there are existing encasement pipes which the proposed lines will pass through. On the
western side of the creek is the only location where there will be trench construction of the forcemain and
re -use waterline in buffered area, outside of underground encasement pipes. This area is to be replanted
by the contractor therefore is considered temporary.
Specifically describe measures taken to avoid or minimize the proposed impacts through construction
techniques.
The utility crossings will be constructed using bore and jack methods to minimize impact in each of the
impact areas.
Buffer Mitigation — Required by NC DWQ
Will the project result in an impact within a protected
Yes ®No Comments:
riparian buffer that requires buffer mitigation?
The only buffer impact outside of the
encasement pipes is in the outer zone of
Impact Area #1. This is only 80 LF of
perpendicular crossing, therefore is
classified as'Allowable'.
If yes, then identify the square feet of the impact to each zone of the riparian buffer that requires
miticiation. Calculate the amount of miticiation re uired.
Zone
Type of Impact
Total Impact Multiplier Required Mitigation
(square feet (square feet
Zone 1
3
Zone 2
1.5
Total
buffer mitigation re uired:
If buffer mitigation is required, discuss what type of mitigation is proposed (e.g., payment into private
mitigation bank, permittee responsible riparian buffer restoration, payment into an approved in-lieu fee
fund):
Comments:
Diffuse Flow Plan DWQ Requirement)
Is a diffuse flow plan included? If no, explain why. OYes ZNo
Project does not include concentrated runoff as a result of any proposed
activities. Sewer will be jack and bored to minimize soil disturbance and
maintenance corridor will be re-vegetated such that diffuse flow is
maintained.
Violations DWQ Requirement)
Is the site in violation of Chatham County Riparian Buffer Rules?
Yes No
Is this an after-the-fact permit application?
Yes ONo
If you answered yes to either of the above, provide an explanation of the violation(s):
Cumulative Impacts DWQ Requirement)
Will this project (based on past and reasonably anticipated future impacts)
❑Yes ®No
result in additional development, which could impact nearby downstream
water quality?
If yes, submit a qualitative and quantitative cumulative impact analysis in accordance with the most
recent DWQ policy. If no, provide a short narrative description.
Proposed activities are not projected to increase any cumulative impacts to aquatic resources as any
future activities would be in compliance with local, state, and federal regulations.
Date:
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(MAINTENANCE TO EXISTING IMPACT)
400' 0 400' 800'
SCALE: 1" = 400'
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CE GROUP
301 GLENWOOD AVE. 220
RALEIGH,NC 27603
PHONE: 919-367-8790
FAX 919-322-0032
www.cegroupinc.com
License # C-1739
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BRIAR CHAPEL COMMUNITY
ASSOCIATION INC
PIN: 9765-00-93-2747
PARCEL ID: 0090383
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RALEIGH,NC 27603
PHONE: 919-367-8790
FAX.- 919-322-0032
www.cegroupinc.com
License # C-1739
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