20110601 Ver 1_401 Application_20110611

North Hills Drive
Culvert Repair
City Project # SM2010-0037
20110601
C?Gadr9
JUN 2 4 2011
Section 404/401 Permit Application
Prepared by:
City of Raleigh
St ?- ate'
},91. .fir
J 46- City of Raleigh
Storm Water Utility
222 West Hargett Street
P.O. Box 590, Room 301
Raleigh, NC 27602
and
USI
US Infrastructure of Carolina, Inc.
1043 E. Morehead Street
Suite 203
Charlotte, NC 28204
June 2011
C

June 3, 2011
Jamie Shern
Raleigh Regulatory Field Office
Wilmington District
US Army Corps of Engineers (USACE)
3331 Heritage Trade Drive, Suite 105
Wake Forest, North Carolina 27587
Re: Pre-Construction Notice Pursuant to Nationwide Permit Number
North Hills Drive Culvert Repair Project
Raleigh, North Carolina
Dear Sirs:
201 1Q60 1
• The North Hills Drive Culvert Repair Project is a project located in Raleigh, North Carolina in the
northwestern quadrant of the city. The primary purpose of the project is to repair a section of an existing
culvert under North Hills Drive that has been undermined due to outlet channel instability. The adjacent
roadway may experience structural failure if the system is not repaired.
The project includes:
• removal of the pipe section that has settled,
• re-alignment of the culvert outlet by installing two new pipe segments to better align with the
receiving stream,
• construction of a culvert headwall,
• installation of a plunge pool and grade control structure to reduce receiving stream instability,
• vegetative bank stabilization and hard toe protection,
• buffer re-vegetation.
The quantity of discharge material and volume of area to be excavated that is proposed below the plane of
the ordinary high water mark is approximately 60 cubic yards.
Our submittal is organized as follows:
• USACE Submittal Cover Sheet
• Agent Authorization Form
• NCDWQ PCN checklist
• USACE Stream Quality Assessment Worksheets
• NCDWQ Stream Identification Forms
• USACE Jurisdictional Determination Form
• USACE Pre-Construction Notification Form
OFFICES • 222 WEST HARGETT STREET • POST OFFICE BOX 590 • RALEIGH, NORTH CAROLINA 27602
RECYCLED PAPER
• USGS Topographic and Project Location Map
• Soils Map
• Stream Photographs
• Engineering and Design Calculations
• Construction Plans and Applicable Specifications
Please note that our permitting approach and subsequent permit application is based on meetings and
conversations with Division of Water Quality (DWQ) and USACE staff. Specific conversations include:
• Field meeting with DWQ staff (Amy Chapman and Lauren Witherspoon) on May 18, 2010.
• Phone conversation with USACE staff (Jamie Shern) on November 19, 2010.
During those conversations, we concluded that the USACE could provide more specific feedback
regarding the most appropriate approach after receiving and reviewing an initial permit application.
Therefore, this application does not include a specific approach and/or proposed Nationwide permit.
Please contact Stephen Sands at [phone] or Chris Stanley at [phone] should you need
additional information to process the application.
Since • ly:
C •1 Da s
Director of Public Works
. cc: Cyndi Karoly, Division of Water Quality
Chris Stanley, City of Raleigh - Public Works Department, Storm Water Utility
Stephen Sands, USInfrastructure of Carolina, Inc.
E
Corps Submittal Cover Sheet
Please provide the following info:
• 1. Project Name: North Hills Drive Culvert Repair Project
2. Name of Property Owner/Applicant: Carl Dawson / City of Raleigh
3. Name of Consultant/Agent: Stephen Sands / US Infrastructure of Carolina, Inc.
*Agent authorization needs to be attached
4. Related/Previous Action ID Numbers: N/A
5. Site Address: 6000 block of North Hills Drive
6. Subdivision Name: N/A
7. City: Raleigh
8. County: Wake
9. Lat: 35.8668 Long: 78.6546 (Decimal Degrees Please)
10. Quadrangle Name: Raleigh West
11. Waterway: Mine Creek
12. Watershed: Crabtree Creek
13. Requested Action:
X Nationwide Permit # TBD
--General Permit #
• Jurisdictional Determination Request
Pre-Application Request
The following information will be completed by Corps office:
AID:
Prepare File Folder
Assign Number in ORM
Begin Date
Authorization
Section 10 Section 404
Project Description / Nature of Activity / Project Purpose:
Site / Waters Name:
Keywords:
n
LJ
•
FORMS
Agent Authorization
Ordinary High Water Mark Fill Computation
NCDWQ PCN Checklist
USACE Stream Quality Assessment Worksheets
NCDWQ Stream Identification
USACE Jurisdictional Determination
USACE Pre-Construction Notification
0
•
E
AGENT CERTIFICATION OF AUTHORIZATION
I, Carl Dawson, representing the City of Raleigh, hereby certify that I have authorized
Stephen R. Sands of US Infrastructure of Carolina, Inc. to act on our behalf and take all
actions necessary to the processing, issuance, and acceptance of this request for stream
and wetland determination and any and all standard and special conditions attached.
We hereby certify that the above information submitted in this application is true and
accurate to the best of our knowledge.
Applicant's signat e
Date
Agent s signature
Date
Completion of this form will allow the agent to sign all future application
correspondence.
0
ORDINARY HIGH WATER MARK FILL COMPUTATION
Ordinary high water mark depth = 2 feet
Length of permanent impact = 108 feet
Average width of permanent impact = 15 feet
Fill below ordinary high water mark
(2 feet)(108 feet)(15 feet) = 3,280 cubic feet
= 121.5 cubic yards
Less excavated volume below ordinary high water mark
Ordinary high water mark depth = 2 feet
Length of permanent impact = 60 feet
Average width of permanent impact = 15 feet
(2 feet)(60 feet)(15 feet) = 1,800 cubic feet
= 66.7 cubic yards
Total fill below ordinary high water mark
54.8 cubic yards
Say 60 cubic yards
•
Version 1.4
January 9, 2009
• 401 Oversight/Express Permitting PCN Submittal Checklist
® The application fee (Checks may be made out to "N.C. Division of Water Quality"
- $240.00 for 401 Water Quality Certification with minor impacts
- $570.00 for 401 Water Quality Certification with major impacts
- Express Review Fee (Amount requested on Acceptance Letter)
® Five (5) complete and collated copies of the PCN Application and supporting
documentation (instead of providing 5 copies of the full size plans you may provide two
copies of full size plans along with three copies of 11 X 17 plans)
? Stormwater Management Plan (if applicable - see PCN Form Help File Section E)
1) Please provide three (3) copies of the stormwater management plans along with all
supporting information pertaining to this project including the following:
a. Entire site development/layout plans delineating all drainage areas;
b. Design calculation sheets for all proposed BMP(s) sized for both on-site and
off-site drainage;
c. BMP supplements for each proposed BMP and Required Items Check List
(http://h2o.enr.state.nc.us/su/bmp forms.htm) along with all required
items;
d. A Notarized Operation & Maintenance Agreement for each stormwater
management facility;
e. Detailed construction drawing sheets shall include
(i) Erosion and sediment control plans;
• (ii) Installation and planting schedules for the proposed BMPs;
(iii) Appropriately scaled plan views and cross sectional details of all
BMPs and associated components - inlet and outlet structures,
forebay, respective zones and pertinent elevations.
® If your project is located within a State implemented Riparian Buffer Rule Area, submit the
following along with site plans and PCN form:
1) Three (3) copies of the details for on-site diffuse flow provisions, (refer to
http://h2o. enr. state. nc. us/su/bm p_forms. htm).
® DWQ Stream Determination Forms for streams on property and DWQ determination
letter for wetlands or streams (if applicable).
The following is the most critical of all the information that you must provide. The quality and
detail of the information will often determine the expeditiousness of the review. The following is
a checklist of the types of pertinent information required at a minimum:
Maps and Plans:
® The most recent version of the 1:24,000 USGS Topographic Map - Please cleanly draw or
delineate the site boundaries on the topographic map.
® The most recent version of the bound and published County NRCS Soil Survey Map -
(required for projects within the Neuse River Basin, Tar-Pamlico River Basin, Randleman
Lake Watershed and the Catawba River Basin, also recommended for all projects) -
Please clearly delineate the site boundaries, etc. on the map. If the delineation obscures
any of the features, it is recommended that a clean copy be provided. Copies of the
Version 1.4
January 9, 2009
current soil survey and/or soil survey map sheets can be obtained from the local NRCS
County Office (http://www.nc.nres.usda.gov/). GIS soil layers are not acceptable.
® Vicinity map - Please clearly mark the location and approximate boundaries of the property
and project on the map. Please indicate north arrow and scale. Please include applicable
road names or State Road numbers.
® The Site Plan - The most critical map to be provided is the site plan. You must provide full
sized plans. The following is the minimum list of plans that are typically needed.
® Pre-construction/Pre-existing conditions - This sheet (or sheets) must include:
• All jurisdictional and non-jurisdictional wetland, stream, water features, State regulated
buffers (delineated into Zones 1 and 2)
• Topographic contours with elevations
• Any existing structures and impervious areas
• Existing utility lines and easements
• Existing roads, culverts, and other pertinent features
• North arrow and the scale (1":50' scale is recommended).
® Proposed conditions - This sheet (or sheets) must include:
• All jurisdictional and non-jurisdictional wetland, stream, water features, State regulated
buffers (delineated into Zones 1 and 2)
• Lot layout (if a subdivision or commercial development is proposed) - lots must be
developable without further impacts to jurisdictional and non-jurisdictional wetlands
streams, water features, and State regulated buffers. Building envelopes must be
provided when streams, wetlands, riparian buffers, or water features exist on a lot
• All built-out structures and impervious cover
• Final grading contours with elevations
• All utilities and easements (including septic fields on all lots within 100 feet of stream,
wetland, or water features - if applicable)
• Impacted areas - these should correspond with the Impact numbers listed on your PCN
form.
® Drainage Plans - Final drainage plans must include the following:
• Locations and pertinent elevations and sizes of the stormwater collection system and
drainage ways
• All inlets and outlets must also be shown with pertinent elevations (All outlets to
wetlands must be at a non-erosive velocity, generally less than 2 ft/sec during the peak
flow from the 10-yr storm)
• Scaled stormwater BMPs must also be indicated as required by DWQ rules and policies
• In certain cases (see Section E of PCN form), final stormwater management plans must
also be provided (see Stormwater Management Plan Checklist)
® Proposed Impacts - All impacts to jurisdictional and non-jurisdictional wetland, stream,
water features, and State regulated buffers must be shown and labeled on the site plans at
a scale no smaller than 1" = 50'. All excavation, fill, flooding, stabilization, and other impacts
that will be conducted in or near jurisdictional and non-jurisdictional wetland, stream, water
features, and State regulated buffers must be indicated. Please provide cross sectional
details showing the provisions for aquatic life passage (burial of culvert 20% for culverts <_ 48
inches, and 1-foot for culverts > 48 inches).
Version 1.4
January 9, 2009
• Wetland Impacts:
? Precise grading and final elevation contours must be provided. Existing
vegetation and any clearing must be specified.
? All subsurface utility lines must indicate the location of anti-seep collars.
Construction detail for anti-seep collars must be provided.
? Roadway or other crossings of riparian wetlands may require floodway culverts to
maintain existing hydrological conditions.
? Plans should show that the hydrology of remaining wetlands on the site will be
maintained.
Stream Impacts:
® Stream impacts must be clearly shown on the plans. The centerline as well as
the banks of the stream must be surveyed or located by GPS for the portion of
the stream to be impacted.
® The inlet and the outlet of all culverts should be aligned with the stream as
much as possible. Inlet and outlet elevations and streambed elevations should
be indicated. Any inlet or outlet protection must be shown and enumerated on
the impact map(s).
? For bottomless culverts or other spans, a vertical cross section should be
provided that shows the minimum distance from each span to each stream bank,
the stream cross section, the height of the span above the stream and the
minimum distance from the edge of each footer to each stream bank.
Additionally, please provide a signed and sealed geotechnical report of
subsurface soils at the proposed bottomless culvert location. The report must
comply with the Division of Highways - Guidelines for Drainage Studies and
Hydraulic Design, prepared by A.L. Hankins, Jr., State Hydraulics Engineer -
1999.
? Multiple culverts or sectioned box culverts typically require the use of sills, off-
setting or other means to match the cross section of the existing stream (in order
to maintain stream stability and provide aquatic life passage). A vertical cross
section of the culverts should be shown overlain with the up and downstream
stream cross section including the stream flood-prone area.
? Impacts associated with dam construction must indicate and enumerate all fill
associated with the dam footprint, spillway and any bank stream bank
stabilization. The length of stream impounded must also be indicated and
enumerated.
0
USACE AID#.
DWQ#,
Site # (indicate on attached map)
Full STREAM QUALITY ASSESSMENT WORKSHEET
Provide the following information for the stream reach under assessment:
1. Applicant's name: City of Raleigh
3. Date of evaluation: 5/17/10
5. Name of stream
7. Approximate drainage
Mine Creek
230 acres
9. Length of reach evaluated: 150 feet
11. Site coordinates (if known): prefer in decimal degrees
2. Evaluator's name: Steve Sands
4. Time of evaluation: 11:00 am
6. River basin: Neuse
8. Stream order: First
10. County: Wake
12. Subdivision name (if any): N/A
Latitude (ex. 34.872312): 35.8668 Longitude (ex. -77.556611): 78.6546
Method location determined (circle): GPS Topo Sheet Ortho (Aerial) Photo/GIS Other GIS Other NC One Map
13. Location of reach under evaluation (note nearby roads and landmarks and attach map identifying stream(s) location):
See attached location map
14. Proposed channel work (if any): Riprap plunge pool, grade control, culvert extension
15. Recent weather conditions: Rain
16. Site conditions at time of visit: Cloudy / Rain
17. Identify any special waterway classifications known: -Section 10 -Tidal Waters -Essential Fisheries Habitat
-Trout Waters -Outstanding Resource Waters X Nutrient Sensitive Waters -Water Supply Watershed (I-IV)
18. Is there a pond or lake located upstream of the evaluation point? YES NO If yes, estimate the water surface area:
19. Does channel appear on USGS quad map? ES NO 20. Does channel appear on USDA Soil Survey? & NO
21. Estimated watershed land use: _ZE% Residential 2 5 % Commercial _% Industrial _% Agricultural
% Forested % Cleared / Logged ,% Other
22. Bankfull width: 10 feet
23. Bank height (from bed to top of bank): 3 feet
24. Channel slope down center of stream: Flat (0 to 2%) -Gentle (2 to 4%) -Moderate (4 to 10%) -Steep (> 10%)
25. Channel sinuosity: Straight -Occasional bends Frequent meander -Very sinuous -Braided channel
Instructions for completion of worksheet (located on page 2): Begin by determining the most appropriate ecoregion based on
location, terrain, vegetation, stream classification, etc. Every characteristic must be scored using the same ecoregion. Assign points
to each characteristic within the range shown for the ecoregion. Page 3 provides a brief description of how to review the
characteristics identified in the worksheet. Scores should reflect an overall assessment of the stream reach under evaluation. If a
characteristic cannot be evaluated due to site or weather conditions, enter 0 in the scoring box and provide an explanation in the
comment section. Where there are obvious changes in the character of a stream under review (e.g., the stream flows from a pasture
into a forest), the stream may be divided into smaller reaches that display more continuity, and a separate form used to evaluate each
reach. The total score assigned to a stream reach must range between 0 and 100, with a score of 100 representing a stream of the
highest quality.
Total Score (from reverse): 74 Comments:
Evaluator's Signature Date 5/17/10
This channel evaluation form is intended to be used only as a guide to assist landowners and environmental professionals in
gathering the data required by the United States Army Corps of Engineers to make a preliminary assessment of stream
quality. The total score resulting from the completion of this form is subject to USACE approval and does not imply a
particular mitigation ratio or requirement. Form subject to change - version 06/03. To Comment, please call 919-876-8441 x 26.
SEGMENT 1
STREAM QUALITY ASSESSMENT WORKSHEET
•
•
ECOREGION POINT RANGE
SCORE
# CHARACTERISTICS
Coastal Piedmont Mountain
Presence of flow / persistent pools in stream
0-5
0-4
0-5
4
1 (no flow or saturation = 0; strong flow = max points
2 Evidence of past human alteration 0-6 0-5 0-5

extensive alteration = 0; no alteration = max points) 4
3 Riparian zone 0-6 0-4 0-5
4
no buffer = 0; contiguous, wide buffer = max points)
4 Evidence of nutrient or chemical discharges 0-5 0-4 0-4
(extensive discharges = 0; no discharges = max points)
4
5 Groundwater discharge 0-3 0-4 0-4 2
(no discharge = 0; springs, seeps, wetlands, etc. = max points)

6 Presence of adjacent floodplain

0-4

0-4

0-2 4
(no floodplain. _ 0; extensive flood lain = max points)
a
7 Entrenchment / floodplain access
0-3
0-4
0-2
4
(deeply entrenched = 0; frequent flooding = max points)
8 Presence of adjacent wetlands 0-6 0-4 0-2
(no wetlands = 0; large adjacent wetlands = max points) 2
9 Channel sinuosity 0-5 0-4 0-3
3
extensive channelization = 0; natural meander = max points)
10 Sediment input 0-5 0-4 0-4
3
(extensive deposition-- 0; little or no sediment - max points)
11 Size & diversity of channel bed substrate NA* 0-4 0-5
(fine, homogenous = 0; large, diverse sizes = max points) 3

12 Evidence of channel incision or widening
0-5
0-4
0-5
? (deeply incised = 0• stable bed & banks = max oints 4

13 Presence of major bank failures
0-5
0-5
0-5
a severe erosion = 0; no erosion, stable banks = max points) 1

14 Root depth and density on banks
-0-3
0-4
0
5
F. no visible roots = 0; dense roots throughout = max oints) - 3

15 Impact by agriculture, livestock, or timber production
'0-5
0-4
0=5
4
substantial impact =0; no evidence = max points)
16 Presence of riffle-pool/ripple-pool complexes 0
3 0
5 0
6

no riffles/ri les or ools = 0; well-develo ed = max points) - - - 4
d
17 Habitat complexity
0-6
0-6
0-6
little or no habitat = 0; frequent, varied habitats = max points) 4
18 Canopy coverage over streambed 0-5 0-5 0'-5

no shading vegetation = 0; continuous canopy = max points) 5
19 Substrate embeddedness NA* 0-4 0-4 3
(deeply embedded = 0; loose structure = max)
20 Presence of stream invertebrates (see page 4) 0
4 0
5 0-5

y?
no evidence = 0; common, numerous types = max points) - - 3

21 Presence of amphibians
0-4
0-4-
0-4
O no evidence = 0; common, numerous types = max points) 3

O
22 Presence of fish
0-4
0-4
0-4 2
no evidence = 0; common, numerous types = max oints

23 Evidence of wildlife use 0-6 0-5 0-5 3
(no evidence = 0; abundant evidence = max points)
Total Points Possible 100 100 100
TOTAL SCORE (also enter on first page) 74
0 * These characteristics are not assessed in coastal streams.
SEGMENT 2
Notes on Characteristics Identified in Assessment Worksheet
1. Consider channel flow with respect to channel cross-sectional area (expected flow), drainage area, recent precipitation, potential
drought conditions, surrounding land use, possible water withdrawals, presence of impoundments upstream, vegetation growth in
channel bottom (as indicator of intermittent flow), etc.
2. Human-caused alterations may include relocation, channelization, excavation, riprap, gabions, culverts, levees, berms, spoil piles
adiacent to channel, etc.
3. The riparian zone is the area of vegetated land along each side of a stream or river that includes, but is not limited to, the
floodplain. Evaluation should consider width of riparian area with respect to floodplain width, vegetation density, maturity of
canopy and understory, species variety, presence of undesirable invasive species (exotics), breaks (utility corridors, roads, etc.),
presence of drainage tiles, logging activities, other disturbances which negatively affect function of the riparian zone.
4. Evidence of nutrient or chemical discharges includes pipes, ditches, and direct draining from commercial and industrial sites,
agricultural fields, pastures, golf courses, swimming pools, roads, parking lots, etc. Sewage, chlorine, or other foul odors,
discolored water, suds, excessive algal growth may also provide evidence of discharge.
5. Groundwater discharge may be indicated by persistent pools and saturated soils during dry weather conditions, presence of
adjacent wetlands, seeps, and springs feeding channel, reduced soils in channel bottom.
6. Presence of floodplains may be determined by topography and the slope of the land adjacent to the stream, terracing, the extent of
development within the floodplain, FEMA designation if known, etc.
7. Indicators of floodplain access include sediment deposits, wrack lines, drainage patterns in floodplain, local stream gauge data,
testimony of local residents, entrenchment ratio, etc. Note that indicators may relic and not a result of regular flooding.
8. Wetland areas should be evaluated according to their location, size, quality, and adjacency relative to the stream channel, and
may be indicated by beaver activity, impounded or regularly saturated areas near the stream, previous delineations, National
Wetland Inventory maps, etc. (Wetlands must meet criteria outlined in 1987 delineation manual and are subject to USACE approval.)
9. Channel sinuosity should be evaluated with respect to the channel size and drainage area, valley slope, topography, etc.
10. To evaluate sediment deposition within the channel consider water turbidity, depth of sediment deposits forming at point bars and
in pools, evidence of eroding banks or other sediment sources within watershed (construction sites, ineffective erosion controls). In
rare cases, typically downstream of culverts or dams, a sediment deficit may exist and should be considered in scoring.
11. When looking at channel substrate, factor in parent material (presence of larger particles in soil horizons adjacent to the stream), average
size of substrate (bedrock, clay/silt, sand, gravel, cobble, boulder, etc.), and diversity of particle size (riprap is excluded).
12. Indications of channel incision and deepening may include a v-shaped channel bottom, collapsing banks, evidence of recent
development and increased impervious surface area resulting in greater runoff in the watershed.
13. Evaluation should consider presence of major bank failures along the entire reach under evaluation, including uprooted trees on
banks, banks falling into channel, formation of islands in channel as they widen, exposed soil, active zones of erosion, etc.
14. Increased root depth and density result in greater bank stability. Consider the depth and density that roots penetrate the bank
relative to the amount of exposed soil on the bank and the normal water elevation.
15. Assessment of agriculture, livestock, and/or timber production impacts should address areas of stream bank destabilization,
evidence of livestock in or crossing stream, loss of riparian zone to pasture or agricultural fields, evidence of sediment or high
nutrient levels entering streams, drainage ditches entering streams, loss of riparian zone due to logging, etc.
16. Riffle-pool steps can be identified by a series of alternating pools and riffles. Abundance, frequency, and relative depth of riffles
and pools should be considered with respect to topography (steepness of terrain) and local geology (type of substrate).
Coastal plain streams should be evaluated for the presence of ripple-pool sequences. Ripples are bed forms found in sand bed
streams with little or no gravel that form under low shear stress conditions, whereas, dunes and antidunes form under moderate
and high shear stresses, respectively. Dunes are the most common bed forms found in sand bed streams.
17. Habitat complexity is an overall evaluation of the variety and extent of in-stream and riparian habitat. Types of habitat to look
for include rocks/cobble, sticks and leafpacks, snags and logs in the stream, root mats, undercut banks, overhanging vegetation,
pool and riffle complexes, wetland pockets adjacent to channel, etc.
18. Evaluation should consider the shading effect that riparian vegetation will provide to the stream during the growing season. Full
sun should be considered worst case, while good canopy coverage with some light penetration is best case.
19. Stream embeddedness refers to the extent that sediment that has filled in gaps and openings around the rocks and cobble in the
streambed. The overall size of the average particle in the streambed should be considered (smaller rocks will have smaller gaps).
20. Evaluation should be based on evidence of stream invertebrates gathered from multiple habitats. Scores should reflect
abundance, taxa richness, and sensitivity of stream invertebrate types. (see attached examples of common stream invertebrates on page
4).
21. Evaluation should include evidence of amphibians in stream channel. Tadpoles and frogs should receive minimum value, while
salamanders, newts, etc. may be assigned higher value.
22. Evaluation of fish should consider the frequency and, if possible, the variety of different fish taxa observed.
23. Evaluation of wildlife should include direct observation or evidence (tracks, shells, droppings, burrows or dens, hunting stands, evidence
of fishing, etc.) of any animals using the streambed or riparian zone, to include small and large mammals, rodents, birds, reptiles,
insects, etc.
•
•
Common Stream Invertebrates
Sensitive Taxa - Pollution sensitive organisms that may be found in good auality water.

Caddisfly Mayfly Stonefly

Dobsonfly
Riffle Beetle Water Penny Gilled Snail
Somewhat Tolerant Taxa - Somewhat pollution tolerant organisms that may be found in good or
,Syr
lt? GP ';
1
p?
Beetle Larva
Sowbug
Clam
Cranefly
r j ,
Craytish Damseltly Nymph
Tol -
Scud
Brant 1 axa - rotlutlon tolerant
6?10 -
inisms that may be tounct in an
cr
Dragon Fly Nymph
zality water.
Blackfly Larva Leech Midge Fly Larva
Q
1F
Aquatic Worm Pouch & Pond Snail
r ?
4
North Carolina Division of Water Quality - Stream Identification Form; Version 3.1
1]
if
•
Date: 5/17/10 Project: North Hills Latitude: 35.8668
Evaluator: Steve Sands Site: Stream Longitude: 78.6546
Total Points: Other Raleigh West
c+.e? +e??+r +e. ;++e + Cmnnhr Wnlo-c
I if? 19 orperennial if? 30 40. f D I e. g. Quad Name:
A. Geomorphology (Subtotal = 31 ) Absent Weak Moderate Strong
1a. Continuous bed and bank 0 1 2 03
2. Sinuosity 0 1 2
3. In-channel structure: riffle-pool sequence 0 1 2 Q
4. Soil texture or stream substrate sorting 0 1 0 3
5. Active/relic floodplain 0 1 2 Q
6. Depositional bars or benches 0 1 2
7. Braided channel 0 1 3
8. Recent alluvial deposits 0 1 3
9 a Natural levees 0 1 2 3
10. Headcuts 0 1 2 3
11. Grade controls 0 0.5 1 1.
12. Natural valley or drainageway 0 0.5 1
13. Second or greater order channel on existing
USGS or NRCS map or other documented
evidence.
No = 0
Yes
- Man-made ditches are not rated; see discussions in manual
B. Hvdroloav (Subtotal = 10.5
14. Groundwater flow/discharge 0 1 2 3
15. Water in channel and > 48 hrs since rain, or
Water in channel -- d or growing season 0 1 2
16. Leaflitter 1.5 1 0.5 0
17. Sediment on plants or debris 0 0.5 1 1.5
18. Organic debris lines or piles (Wrack lines) 0 0.5 1 1.5
19. Hydric soils (redoximorphic features) present? No = 0 Yes =
C. Bioloav (Subtotal = 7.25 )
20b. Fibrous roots in channel 3 2 0
21 b. Rooted plants in channel 3 2 1 0
22. Crayfish 0 0.5 1 1.5
23. Bivalves 0 1 2 3
24. Fish _ 0 0.5 1 1.5
25. Amphibians 0 QUO 1 1.5
26. Macrobenthos (note diversity and abundance) 0 0.5 1 1.5
27. Filamentous algae; periphyton 0 1 2 3
28. Iron oxidizing bacteria/fungus. 0 (ZLD 1 1.5
29 b Wetland plants in streambed FAC = 0.5; FACW = .75; OBL = 1.5 SAV = 2.0; Other = 0
items zu ana L I tocus on the presence of upiana plants, item 29 tocuses on the presence of aquatic or wetland plants.
Sketch:
Notes: (use back side of this form for additional notes.)
APPROVED JURISDICTIONAL DETERMINATION FORM
U.S. Army Corps of Engineers
r? This form should be completed by following the instructions provided in Section IV of the JD Form Instructional Guidebook.
SECTION I: BACKGROUND INFORMATION
A. REPORT COMPLETION DATE FOR APPROVED JURISDICTIONAL DETERMINATION (JD): March 22, 2010
B. DISTRICT OFFICE, FILE NAME, AND NUMBER:
C. PROJECT LOCATION AND BACKGROUND INFORMATION:
State: North Carolina County/parish/borough: Wake City: Raleigh
Center coordinates of site (lat/long in degree decimal format): Lat. 35.8668° N, Long. 78.6546° W.
Universal Transverse Mercator:
Name of nearest waterbody: Mine Creek
Name of nearest Traditional Navigable Water (TNW) into which the aquatic resource flows: Neuse River
Name of watershed or Hydrologic Unit Code (HUC):
Check if map/diagram of review area and/or potential jurisdictional areas is/are available upon request.
0 Check if other sites (e.g., offsite mitigation sites, disposal sites, etc...) are associated with this action and are recorded on a
different JD form.
D. REVIEW PERFORMED FOR SITE EVALUATION (CHECK ALL THAT APPLY):
[( Office (Desk) Determination. Date:
Field Determination. Date(s):
SECTION H: SUMMARY OF FINDINGS
A. RHA SECTION 10 DETERMINATION OF JURISDICTION.
There Are no "navigable waters of the U.S." within Rivers and Harbors Act (RHA) jurisdiction (as defined by 33 CFR part 329) in the
review area. [Required]
E] Waters subject to the ebb and flow of the tide.
0 Waters are presently used, or have been used in the past, or may be susceptible for use to transport interstate or foreign commerce.
Explain:
B. CWA SECTION 404 DETERMINATION OF JURISDICTION.
There Aire "waters of the U.S." within Clean Water Act (CWA) jurisdiction (as defined by 33 CFR part 328) in the review area. [Required]
1. Waters of the U.S.
a. Indicate presence of waters of U.S. in review area (check all that apply): t
0 TNWs, including territorial seas
0 Wetlands adjacent to TNWs
Relatively permanent waters` (RPWs) that flow directly or indirectly into TNWs
Non-RPWs that flow directly or indirectly into TNWs
Wetlands directly abutting RPWs that flow directly or indirectly into TNWs
? Wetlands adjacent to but not directly abutting RPWs that flow directly or indirectly into TNWs
Q Wetlands adjacent to non-RPWs that flow directly or indirectly into TNWs
0" Impoundments of jurisdictional waters
[3 Isolated (interstate or intrastate) waters, including isolated wetlands
b. Identify (estimate) size of waters of the U.S. in the review area:
Non-wetland waters: 150 linear feet: 6 width (ft) and/or acres.
Wetlands: acres.
c. Limits (boundaries) of jurisdiction based on: 1987 Delineation Manual
Elevation of established OHWM (if known):
2. Non-regulated waters/wetlands (check if applicable):3
Q Potentially jurisdictional waters and/or wetlands were assessed within the review area and determined to be not jurisdictional.
Explain:
Boxes checked below shall be supported by completing the appropriate sections in Section III below.
2 For purposes of this form, an RPW is defined as a tributary that is not a TNW and that typically flows year-round or has continuous flow at least "seasonally"
(e.g., typically 3 months).
3 Supporting documentation is presented in Section III.F.
SECTION III: CWA ANALYSIS
A. TNWs AND WETLANDS ADJACENT TO TNWs
The agencies will assert jurisdiction over TNWs and wetlands adjacent to TNWs. If the aquatic resource is a TNW, complete
Section III.A.1 and Section III.D.1. only; if the aquatic resource is a wetland adjacent to a TNW, complete Sections III.A.1 and 2
and Section III.D.1.; otherwise, see Section III.B below.
1. TN W
Identify TNW:
Summarize rationale supporting determination:
2. Wetland adjacent to TNW
Summarize rationale supporting conclusion that wetland is "adjacent":
B. CHARACTERISTICS OF TRIBUTARY (THAT IS NOT A TNW) AND ITS ADJACENT WETLANDS (IF ANY):
This section summarizes information regarding characteristics of the tributary and its adjacent wetlands, if any, and it helps
determine whether or not the standards for jurisdiction established under Rapanos have been met.
The agencies will assert jurisdiction over non-navigable tributaries of TNWs where the tributaries are "relatively permanent
waters" (RPWs), i.e. tributaries that typically flow year-round or have continuous flow at least seasonally (e.g., typically 3
months). A wetland that directly abuts an RPW is also jurisdictional. If the aquatic resource is not a TNW, but has year-round
(perennial) flow, skip to Section III.D.2. If the aquatic resource is a wetland directly abutting a tributary with perennial flow,
skip to Section III.D.4.
A wetland that is adjacent to but that does not directly abut an RPW requires a significant nexus evaluation. Corps districts and
EPA regions will include in the record any available information that documents the existence of a significant nexus between a
relatively permanent tributary that is not perennial (and its adjacent wetlands if any) and a traditional navigable water, even
though a significant nexus finding is not required as a matter of law.
If the waterbody4 is not an RPW, or a wetland directly abutting an RPW, a JD will require additional data to determine if the
waterbody has a significant nexus with a TNW. If the tributary has adjacent wetlands, the significant nexus evaluation must
consider the tributary in combination with all of its adjacent wetlands. This significant nexus evaluation that combines, for
analytical purposes, the tributary and all of its adjacent wetlands is used whether the review area identified in the JD request is
the tributary, or its adjacent wetlands, or both. If the JD covers a tributary with adjacent wetlands, complete Section III.B.1 for
the tributary, Section III.B.2 for any onsite wetlands, and Section III.B.3 for all wetlands adjacent to that tributary, both onsite
and offsite. The determination whether a significant nexus exists is determined in Section III.C below.
1. Characteristics of non-TNWs that flow directly or indirectly into TNW
(i) General Area Conditions:
Watershed size: 230 acres
Drainage area: 230 acres
Average annual rainfall: 43 inches
Average annual snowfall: inches
(ii) Physical Characteristics:
(a) Relationship with TNW:
? Tributary flows directly into TNW.
? Tributary flows through 2 tributaries before entering TNW.
Project waters are 5-10 river miles from TNW.
Project waters are 1 (or less) river miles from RPW.
Project waters are 5-10 aerial (straight) miles from TNW.
Project waters are 1 (or less) aerial (straight) miles from RPW.
Project waters cross or serve as state boundaries. Explain:
•
Identify flow route to TNW': Mine Creek to Crabtree Creek to Neuse River.
Tributary stream order, if known: First.
a Note that the Instructional Guidebook contains additional information regarding swales, ditches, washes, and erosional features generally and in the acid
West.
s Flow route can be described by identifying, e.g., tributary a, which flows through the review area, to flow into tributary b, which then flows into TNW.
(b) General Tributary Characteristics (check all that apply):
Tributary is: ? Natural
? Artificial (man-made). Explain:
® Manipulated (man-altered). Explain: Pipe system outlet.
Tributary properties with respect to top of bank (estimate):
Average width: 6 feet
Average depth: 2 feet
Average side slopes: 2;1.
Primary tributary substrate composition (check all that apply):
? Silts ® Sands ? Concrete
® Cobbles ® Gravel ? Muck
® Bedrock ? Vegetation. Type/% cover:
? Other. Explain:
Tributary condition/stability [e.g., highly eroding, sloughing banks]. Explain:
Presence of run/riffle/pool complexes. Explain: Yes.
Tributary geometry: Relatively straight
Tributary gradient (approximate average slope): 2.5 %
(c) Flow:
Tributary provides for: Ephemeral flow
Estimate average number of flow events in review area/year: 20 (or greater)
Describe flow regime:
Other information on duration and volume:
Surface flow is: Confined. Characteristics:
Subsurface flow: Pick List. Explain findings:
? Dye (or other) test performed:
Tributary has (check all that apply):
® Bed and banks
® OHWM6 (check all indicators that apply):
® clear, natural line impressed on the bank ® the presence of litter and debris
® changes in the character of soil ® destruction of terrestrial vegetation
? shelving ® the presence of wrack line
® vegetation matted down, bent, or absent ® sediment sorting
® leaf litter disturbed or washed away ® scour
® sediment deposition ® multiple observed or predicted flow events
® water staining ® abrupt change in plant community
? other (list):
F-1 Discontinuous OHWM.7 Explain:
If factors other than the OHWM were used to determ
High Tide Line indicated by:
? oil or scum line along shore objects
? fine shell or debris deposits (foreshore)
? physical markings/characteristics
? tidal gauges
? other (list):
,ne lateral extent of CWA jurisdiction (check all that apply):
Mean High Water Mark indicated by:
? survey to available datum;
? physical markings;
? vegetation lines/changes in vegetation types.
(iii) Chemical Characteristics:
Characterize tributary (e.g., water color is clear, discolored, oily film; water quality; general watershed characteristics, etc.).
Explain:
Identify specific pollutants, if known:
'A natural or man-made discontinuity in the OHWM does not necessarily sever jurisdiction (e.g., where the stream temporarily flows underground, or where
the OHWM has been removed by development or agricultural practices). Where there is a break in the OHWM that is unrelated to the waterbody's flow
regime (e.g., flow over a rock outcrop or through a culvert), the agencies will look for indicators of flow above and below the break.
'Ibid.
(iv) Biological Characteristics. Channel supports (check all that apply):
® Riparian corridor. Characteristics (type, average width): Natural forest buffer - 50 to 100 feet wide.
? Wetland fringe. Characteristics:
• ? Habitat for:
? Federally Listed species. Explain findings:
? Fish/spawn areas. Explain findings:
? Other environmentally-sensitive species. Explain findings:
? Aquatic/wildlife diversity. Explain findings:
2. Characteristics of wetlands adjacent to non-TNW that flow directly or indirectly into TNW
(i) Physical Characteristics:
(a) General Wetland Characteristics:
Properties:
Wetland size: acres
Wetland type. Explain:
Wetland quality. Explain:
Project wetlands cross or serve as state boundaries. Explain:
(b) General Flow Relationship with Non-TNW:
Flow is: Pick List. Explain:
Surface flow is: Pick List
Characteristics:
Subsurface flow: Pick List. Explain findings:
? Dye (or other) test performed:
(c) Wetland Adjacency Determination with Non-TNW:
? Directly abutting
? Not directly abutting
? Discrete wetland hydrologic connection. Explain:
? Ecological connection. Explain:
? Separated by berm/barrier. Explain:
(d) Proximity (Relationship) to TNW
Project wetlands are Pick List river miles from TNW.
Project waters are Pick List aerial (straight) miles from TNW.
Flow is from: Pick List.
Estimate approximate location of wetland as within the Pick List floodplain.
(ii) Chemical Characteristics:
Characterize wetland system (e.g., water color is clear, brown, oil film on surface; water quality; general watershed
characteristics; etc.). Explain:
Identify specific pollutants, if known:
(iii) Biological Characteristics. Wetland supports (check all that apply):
? Riparian buffer. Characteristics (type, average width):
? Vegetation type/percent cover. Explain:
? Habitat for:
? Federally Listed species. Explain findings:
? Fish/spawn areas. Explain findings:
? Other environmentally-sensitive species. Explain findings:
? Aquatic/wildlife diversity. Explain findings:
3. Characteristics of all wetlands adjacent to the tributary (if any)
All wetland(s) being considered in the cumulative analysis: Pick List
Approximately ( ) acres in total are being considered in the cumulative analysis.
•
For each wetland, specify the following:
Directly abuts? (Y/N) Size (in acres) Directlv abuts? (Y/N) Size (in acres)
Summanze overall biological, chemical and physical functions being performed:
C. SIGNIFICANT NEXUS DETERMINATION
A significant nexus analysis will assess the flow characteristics and functions of the tributary itself and the functions performed
by any wetlands adjacent to the tributary to determine if they significantly affect the chemical, physical, and biological integrity
of a TNW. For each of the following situations, a significant nexus exists if the tributary, in combination with all of its adjacent
wetlands, has more than a speculative or insubstantial effect on the chemical, physical and/or biological integrity of a TNW.
Considerations when evaluating significant nexus include, but are not limited to the volume, duration, and frequency of the flow
of water in the tributary and its proximity to a TNW, and the functions performed by the tributary and all its adjacent
wetlands. It is not appropriate to determine significant nexus based solely on any specific threshold of distance (e.g. between a
tributary and its adjacent wetland or between a tributary and the TNW). Similarly, the fact an adjacent wetland lies within or
outside of a floodplain is not solely determinative of significant nexus.
Draw connections between the features documented and the effects on the TNW, as identified in the Rapanos Guidance and
discussed in the Instructional Guidebook. Factors to consider include, for example:
• Does the tributary, in combination with its adjacent wetlands (if any), have the capacity to carry pollutants or flood waters to
TNWs, or to reduce the amount of pollutants or flood waters reaching a TNW?
• Does the tributary, in combination with its adjacent wetlands (if any), provide habitat and lifecycle support functions for fish and
other species, such as feeding, nesting, spawning, or rearing young for species that are present in the TNW?
• Does the tributary, in combination with its adjacent wetlands (if any), have the capacity to transfer nutrients and organic carbon that
support downstream foodwebs?
• Does the tributary, in combination with its adjacent wetlands (if any), have other relationships to the physical, chemical, or
biological integrity of the TNW?
Note: the above list of considerations is not inclusive and other functions observed or known to occur should be documented
below:
1. Significant nexus findings for non-RPW that has no adjacent wetlands and flows directly or indirectly into TNWs. Explain
findings of presence or absence of significant nexus below, based on the tributary itself, then go to Section III.D:
2. Significant nexus findings for non-RPW and its adjacent wetlands, where the non-RPW flows directly or indirectly into
TNWs. Explain findings of presence or absence of significant nexus below, based on the tributary in combination with all of its
adjacent wetlands, then go to Section III.D:
3. Significant nexus findings for wetlands adjacent to an RPW but that do not directly abut the RPW. Explain findings of
presence or absence of significant nexus below, based on the tributary in combination with all of its adjacent wetlands, then go to
Section III.D:
D. DETERMINATIONS OF JURISDICTIONAL FINDINGS. THE SUBJECT WATERS/WETLANDS ARE (CHECK ALL
THAT APPLY):
1. TNWs and Adjacent Wetlands. Check all that apply and provide size estimates in review area:
? TNWs: linear feet width (ft), Or, acres.
Q Wetlands adjacent to TNWs: acres.
2. RPWs that flow directly or indirectly into TNWs.
Tributaries of TNWs where tributaries typically flow year-round are jurisdictional. Provide data and rationale indicating that
tributary is perennial:
Q Tributaries of TNW where tributaries have continuous flow "seasonally" (e.g., typically three months each year) are
jurisdictional. Data supporting this conclusion is provided at Section III.B. Provide rationale indicating that tributary flows
seasonally:
Provide estimates for jurisdictional waters in the review area (check all that apply):
Z Tributary waters: linear feet width (ft).
Other non-wetland waters: acres.
Identify type(s) of waters:
3. Non-RPWss that flow directly or indirectly into TNWs.
Waterbody that is not a TNW or an RPW, but flows directly or indirectly into a TNW, and it has a significant nexus with a
TNW is jurisdictional. Data supporting this conclusion is provided at Section III.C.
Provide estimates for jurisdictional waters within the review area (check all that apply):
? Tributary waters: linear feet width (ft).
? Other non-wetland waters: acres.
Identify type(s) of waters:
4. Wetlands directly abutting an RPW that flow directly or indirectly into TNWs.
Wetlands directly abut RPW and thus are jurisdictional as adjacent wetlands.
? Wetlands directly abutting an RPW where tributaries typically flow year-round. Provide data and rationale
indicating that tributary is perennial in Section III.D.2, above. Provide rationale indicating that wetland is
directly abutting an RPW:
Wetlands directly abutting an RPW where tributaries typically flow "seasonally." Provide data indicating that tributary is
seasonal in Section III.B and rationale in Section III.D.2, above. Provide rationale indicating that wetland is directly
abutting an RPW:
Provide acreage estimates for jurisdictional wetlands in the review area: acres.
5. Wetlands adjacent to but not directly abutting an RPW that flow directly or indirectly into TNWs.
Wetlands that do not directly abut an RPW, but when considered in combination with the tributary to which they are adjacent
and with similarly situated adjacent wetlands, have a significant nexus with a TNW are jurisidictional. Data supporting this
conclusion is provided at Section III.C.
Provide acreage estimates for jurisdictional wetlands in the review area: acres.
6. Wetlands adjacent to non-RPWs that flow directly or indirectly into TNWs.
0 Wetlands adjacent to such waters, and have when considered in combination with the tributary to which they are adjacent and
with similarly situated adjacent wetlands, have a significant nexus with a TNW are jurisdictional. Data supporting this
conclusion is provided at Section III.C.
Provide estimates for jurisdictional wetlands in the review area: acres.
7. Impoundments of jurisdictional waters.
As a general rule, the impoundment of a jurisdictional tributary remains jurisdictional.
? Demonstrate that impoundment was created from "waters of the U.S.," or
? Demonstrate that water meets the criteria for one of the categories presented above (1-6), or
? Demonstrate that water is isolated with a nexus to commerce (see E below).
E. ISOLATED [INTERSTATE OR INTRA-STATE] WATERS, INCLUDING ISOLATED WETLANDS, THE USE,
DEGRADATION OR DESTRUCTION OF WHICH COULD AFFECT INTERSTATE COMMERCE, INCLUDING ANY
SUCH WATERS (CHECK ALL THAT APPLY):"
which are or could be used by interstate or foreign travelers for recreational or other purposes.
? from which fish or shellfish are or could be taken and sold in interstate or foreign commerce.
? which are or could be used for industrial purposes by industries in interstate commerce.
? Interstate isolated waters. Explain:
Other factors. Explain:
Identify water body and summarize rationale supporting determination:
8See Footnote # 3.
9 To complete the analysis refer to the key in Section III. D.6 of the Instructional Guidebook.
to Prior to asserting or declining CWA jurisdiction based solely on this category, Corps Districts will elevate the action to Corps and EPA HQ for
review consistent with the process described in the Corps/EPA Memorandum Regarding CWA Act Jurisdiction Following Rapanos.
• Provide estimates for jurisdictional waters in the review area (check all that apply):
? Tributary waters: linear feet width (ft).
? Other non-wetland waters: acres.
Identify type(s) of waters:
?; Wetlands: acres.
F. NON-JURISDICTIONAL WATERS, INCLUDING WETLANDS (CHECK ALL THAT APPLY):
If potential wetlands were assessed within the review area, these areas did not meet the criteria in the 1987 Corps of Engineers
Wetland Delineation Manual and/or appropriate Regional Supplements.
Review area included isolated waters with no substantial nexus to interstate (or foreign) commerce.
? Prior to the Jan 2001 Supreme Court decision in "SW,4,VCC," the review area would have been regulated based solely on the
"Migratory Bird Rule" (MBR).
?' Waters do not meet the "Significant Nexus" standard, where such a finding is required for jurisdiction. Explain:
Other: (explain, if not covered above):

Provide acreage estimates for non-jurisdictional waters in the review area, where the sole potential basis of jurisdiction is the MBR
factors (i.e., presence of migratory birds, presence of endangered species, use of water for irrigated agriculture), using best professional
judgment (check all that apply):
?! Non-wetland waters (i.e., rivers, streams): linear feet width (ft).
Lakes/ponds: acres.
?! Other non-wetland waters: acres. List type of aquatic resource:
?! Wetlands: acres.
Provide acreage estimates for non-jurisdictional waters in the review area that do not meet the "Significant Nexus" standard, where such
a finding is required for jurisdiction (check all that apply):
?' Non-wetland waters (i.e., rivers, streams): linear feet, width (ft).
? Lakes/ponds: acres.
Other non-wetland waters: acres. List type of aquatic resource:
Wetlands: acres.
SECTION IV: DATA SOURCES.
A. SUPPORTING DATA. Data reviewed for JD (check all that apply - checked items shall be included in case file and, where checked
and requested, appropriately reference sources below):
Maps, plans, plots or plat submitted by or on behalf of the applicant/consultant:
?! Data sheets prepared/submitted by or on behalf of the applicant/consultant.
? Office concurs with data sheets/delineation report.
? Office does not concur with data sheets/delineation report.
Data sheets prepared by the Corps:
Corps navigable waters' study:
?U.S. Geological Survey Hydrologic Atlas:
? USGS NHD data.
? USGS 8 and 12 digit HUC maps.
U.S. Geological Survey map(s). Cite scale & quad name: l" = 2000', Charlotte West.
USDA Natural Resources Conservation Service Soil Survey. Citation:
? National wetlands inventory map(s). Cite name:
? State/Local wetland inventory map(s):
FEMA/FIRM maps:
? 100-year Floodplain Elevation is: (National Geodectic Vertical Datum of 1929)
Photographs: ® Aerial (Name & Date):Aerial photographs included in Appendix.
or ® Other (Name & Date): Stream segement photographs included in Appendix.
?' Previous determination(s). File no. and date of response letter:
?' Applicable/supporting case law:
Applicable/supporting scientific literature:
?I Other information (please specify):
0 B. ADDITIONAL COMMENTS TO SUPPORT JD:
North Hills Drive
Culvert Repair
City Project # SM2010-0037
Section 404/401 Permit Application
Prepared by:
si City of Raleigh
r a?ef.
to-
City of Raleigh
Storm Water Utility
222 West Hargett Street
P.O. Box 590, Room 301
Raleigh, NC 27602
and
USI
US Infrastructure of Carolina, Inc.
1043 E. Morehead Street
Suite 203
Charlotte, NC 28204
June 2011
20110601
O?O? W A T ?94G
1 1 > _,
o <
?._ .
Office Use Only:
Corps action ID no.
DWQ project no.
Form Version 1.3 Dec 10 2008
Pre-Construction Notification (PCN) Form
A. Applicant Information --? _---?
1. Processing -
1 a. Type(s) of approval sought from the
Corps:
®Section 404 Permit ? Section 10 Permit
1 b. Specify Nationwide Permit (NWP) number: or General Permit (GP) number:
1c. Has the NWP or GP number been verified by the Corps? ? Yes ® 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 ® 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 ® No For the record only for Corps Permit:

? Yes ® No
1f. 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 ® No
1 g. Is the project located in any of NC's twenty coastal counties. If yes, answer 1 h
below. ? Yes ® No
1 h. Is the project located within a NC DCM Area of Environmental Concern (AEC)? ? Yes ® No
2. Project Information
2a. Name of project: North Hills Drive Culvert Repair
2b. County: Wake
2c. Nearest municipality / town: City of Raleigh
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: City of Raleigh
3b. Deed Book and Page No. BM 1969 PG 188
3c. Responsible Party (for LLC if
applicable): N/A
3d. Street address: 222 West Hargett Street
3e. City, state, zip: Raleigh, NC 27602
3f. Telephone no.: 919-996-3030
3g. Fax no.: 919-996-7638
3h. Email address: [e-mail]
9
Page 1 of 14
PCN Form - Version 1.3 December 10, 2008 Version

4. Applicant Information (if different from owner)
4a. Applicant is: ? Agent ® Other, specify: City of Raleigh representative
4b. Name: Mr. Carl Dawson
4c. Business name
(if applicable): City of Raleigh Public Works
4r1 Street arfrtre?s 999 We,t Harnett Street
4e. City, state, zip: Raleigh, NC 27602
4f. Telephone no.: 919-996-3030
4g. Fax no.: 919-996-7638
4h. Email address: [e-mail]
5. Agent/Consultant Information (if applicable)
5a. Name: Stephen Sands
5b. Business name
(if applicable): US Infrastructure of Carolina, Inc.
5c. Street address: 1043 E. Morehead Street, Suite 203
5d. City, state, zip: Charlotte, NC 28204
5e. Telephone no.: 704-342-3007
5f. Fax no.: 704-342-1666
5g. Email address: [e-mail]
•
•
Page 2 of 14
PCN Form - Version 1.3 December 10, 2008 Version

S. Project Information and Prior Project History
1. Property Identification
1a. Property identification no. (tax PIN or parcel ID): PIN 1706 29 3777
1-
1U. cl;._ ,;
.nic Uuviuuiaiw kiii ucA,niiai UcyiccaJ. Latitude: 35.8668 Longitude: - 78.6546
(DD.DDDDDD) (-DD.DDDDDD)
1 c. Property size: 0.5 acres
2. Surface Waters
2a. Name of nearest body of water (stream, river, etc.) to
proposed project: Mine Creek
2b. Water Quality Classification of nearest receiving water: C, NSW - Mine Creek to Crabtree Creek
2c. River basin: Neuse

U
Page 3 of 14
PCN Form - Version 1.3 December 10, 2008 Version
4
4 3e. Describe the overall project in detail, including the type of equipment to be used:
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
1 application:
The project consist of the repair of the North Hills Drive culvert that conveys discharge from an unnamed tributary of Mine
Creek. The unnamed tributary flows into Mine Creek, a tributary to Crabtree Creek in the Neuse River watershed. North
Hills Drive is a collector street located in the northwest quadrant of the City of Raleigh. The culvert receives a watershed
With n rirninnno nrcn of annrnvimntoly TIr) nnroc The r r%mtrihi itinn wotcrchorl is nImnct cntiraly Anvainnari With
residential land use.The headwaters of the watershed have some commercial land uses that front on Millbrook and Six
Forks Road. The majority of the tributary is an open channel system with small sections contained within closed culvert
systems that serve the roadways within the development. The lower portion of the tributary along the proposed project
reach has a natural buffer which is a part of the City of Raleigh greenway system. The roadway surface of North Hills
Drive is over 15 to 20 feet above the channel invert elevation. The confluence of the unnamed tributary with the Mine
Creek main stem is approximately 1300 lineal feet downstream of the project limits. Mine Creek flows into Shelley Lake.
3b. List the total estimated acreage of all existing wetlands on the property:
N/A
3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property:
The total project impacts is 108 lineal feet (permanent) of which the entire length is perennial stream. Of the 108 lineal
feet, approximately 12 lineal feet is the extension of an existing culvert (16 additional lineal feet of the existing culvert will
be reset). Approximately 46 lineal feet consist of the replacement of an existing natural plunge pool with an engineered
plunge pool. The remaining 50 feet of the project consist of grade control, toe protection,and vegetative bank stabilization.
in addition to the permanent impacts, the project includes 30 lineal feet of temporary impacts associated with installing a
temporary stream crossing and an impervious dike/stream pump.
3d. Explain the purpose of the proposed project:
The project purpose is to provide repair of an existing RCP culvert system that is showing signs of structural failure due to
downstream channel and natural culvert plunge pool instability. The project resets the existing culvert and addresses the
downstream channel and natural plunge pool instability through the installation of a designed plunge pool, grade control,
vegetative bank stabililzation, and toe protection.

The project is removing two sections and replacing three sections of an existing 72-inch RCP culvert that conveys an
unnamed tributary of Mine Creek under North Hills Drive. The project includes the extension of the culvert system by 12
lineal feet in order to re-align the culvert oulet to receiving stream channel in a more favorable alignment and therefore
reduce the opportunity for receiving channel instability. Receiving stream and natural plunge pool instability is also
addressed through the installation of a designed plunge pool, grade control, toe protection, and vegetative bank
protection. Native stream material is used as much as possible for materials for the plunge pool, grade control and toe
protection,
Access to perform the construction is a key challenge of the project because North Hills Drive is about 25 feet above the
invert elevation of the culvert. Therefore, construction activities can not occur from the roadway and construction
equipment must access the areas at or near the stream elevation. An existing greenway trail will be temporarily widened
to serve as the construction access. the widening will occur in a manner so that the pedestrians that use the greenway
trail system will not be interupted. The impacts to the stream buffer vegetation impacts will be offset by planting new
vegetation. An existing minor storm drainage system (24-inch RCP) is being extended in order to install the temporary
construction access. The minor storm drainage does not drain a jurisdictional stream and does not change drainage
patterns, is sized the pass design discharge, and was determined to be exempt from 404/401 and Buffer regulatory
requirements.
Relatively large construction equipment such as a trackhoe will be needed to reset the existing culvert, install the new
manhole, and install the new headwall. Smaller equipment may be used for installation of the plunge pool, grade control
structure, and toe protection. The stream base flow will be diverted around the construction area by temporarily blocking
the stream on the upstream side of the culvert and pumping the flow downstream from the consturction area. All
construction will occur in dry conditions.
•
Page 4 of 14
PCN Form - Version 1.3 December 10, 2008 Version

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?
Comments:

El Yes ®No El Unknown
4b. If the Corps made the jurisdictional determination, what type
of deter,, natia, ::as made'
? Preliminary ? Final
4c. If yes, who delineated the jurisdictional areas?
Name (if known): Agency/Consultant Company:
Other:
4d. If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation.
5. Project History
5a. Have permits or certifications been requested or obtained for
this project (including all prior phases) in the past? ? Yes ® No ? Unknown
5b. If yes, explain in detail according to "help file" instructions.
6. Future Project Plans
6a. Is this a phased project? ? Yes ® No
- :If yes, explain.
•
•
Page 5 of 14
PCN Form - Version 1.3 December 10, 2008 Version
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
u
•
Page 6 of 14
PCN Form - Version 1.3 December 10, 2008 Version

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 Type of jurisdiction
number - Type of impact Type of wetland Forested (Corps - 404, 10 Area of impact
Permanent (P) or (if known) DWQ - non-404, other) (acres)
Temporary T
W1 ? P ? T ? Yes ? Corps
? 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
W6 ? P ? T ? Yes ? Corps
? No ? DWQ
2g. Total wetland impacts
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. 3b. 3c. 3d. 3e. 3f. 3g.
Stream impact Type of impact Stream name Perennial Type of jurisdiction Average Impact
number - (PER) or (Corps - 404, 10 stream length
Permanent (P) or intermittent DWQ - non-404, width (linear
Temporary (T) (INT)? other) (feet) feet)

S1 ®P ? T Plunge pool,
Construction plan UT1 to Mine
Creek of Crabtree ® PER ® Corps
10
46
sheet 6 Creek ? INT ® DWQ

S2 ® P ? T Pipe system
placement, UT1 to Mine
Creek of Crabtree
® PER
® Corps
10
12
Construction plan Creek ? INT ® DWQ
sheet 6

S3 ®P ? T Grade control and toe
protection, UT1 to Mine
Creek of Crabtree
® PER
® Corps
10
50
Construction plan Creek ? INT ® DWQ
sheet 6

S4 ? P ® T Construction access,
Construction plan UT1 to Mine
Creek of Crabtree ® PER ® Corps
10
20
sheet EC1 Creek ? INT ® DWQ

S5 ? P ®T Stream baseflow
pump operations, UT1 to Mine

Creek of Crabtree
? PER
? Corps

10

10
Construction plan
Creek ?INT ? p?VQ
sheet EC1
S6 ? P ? T ? PER ? Corps
? INT ? DWQ
3h. Total stream and tributary impacts 138
3i. Comments: There are two types of impacts associated with the project, permanent and temporary. The permanent impacts
address channel and natural olunae cool instability that has rPSUltind in tha m ilvart i inrrarmininn Tha narmanant imnactc
include re-alignment of the culvert outlet, plunge pool, grade control, and toe protection. The temporary impacts are needed
to provide construction access. The temporary impacts incude a temporary stream crossing and an imperivious dike to block
stream flow and provide a means to pump the baseflow around the construction site so that all construction occurs in dry
Page 7 of 14
PCN Form - Version 1.3 December 10, 2008 Version

r
conditions.
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 individually list all open water impacts below.
4a.
Open water
.-.,,.. 1,-
111 lpali? l 11 UI I ILJGI
- Permanent
(P) or
Temporary T 4b.
Name of waterbody
/:t ....... I;__1.1-%
111 CIPy1IVGIV1c/ 4c.

T..-- -4: :..........a
Iypv VI 11I 1PCI%il 4d.

%AI-4...-L. A., 1......
VVQl01UV4y ly PU 4e.

n--- t :............a ?..........?
MI GC1 VI 11 I IPC',L 1Qlil VO)
01 ?P?T
02 ?P?T
03 ?P?T
04 ?P?T
4f. Total open water impacts
4g. Comments:
5. Pond or Lake Construction
If pond or lake construction proposed, then com fete the chart below.
5a.

Pond ID 5b.

Proposed use or purpose of 5c.
Wetland Impacts (acres) 5d.
Stream Impacts (feet) 5e.
Upland
(acres)
number pond
Flooded
Filled
Excavated
Flooded
Filled
Excavated
Flooded
P1
P2
IK 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:
•
Page 8 of 14
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 any 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
bb. tic. ba. be. 6f. bg.
Buffer impact
number - Reason for Buffer Zone 1 impact Zone 2 impact
Permanent (P) impact Stream name mitigation (square feet) (square feet)
or Temporary required?
T
B1 ? P ® T Construction UT1 to Mine Creek of s 6300 2800
access Crabtree Creek ® No
B2 ?P?T ?Yes
? No
B3 ?P?T ?Yes
? No
6h. Total buffer impacts
6i. Comments: Buffer impacts are temporary and associated with providing access for construction equipment. Buffer impacts
include the temporary widening of the existing greenway trail for construction equipment while keeping the trail system open
for pedestrians. The buffer will also be imapcted by construction operations within the floodplain overbank area during culvert
resetting and plunge pool installation. All temporary buffer impacts will be mitigated through the implementation of a
vegetation re-establishment plan that is included in the construction plans and attached specifications. The vegetation re-
establishment plan is developed in accordance to the guidelines presented in the publication Guidelines for Riparian Buffer
Restoration, Ecosystem Enhancement.
D. Impact Justification and Mitigation
1. Avoidance and Minimization
1a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project.
The lowest culvert segment and headwall have settled due to downstream channel and natural pool instability. The North Hill
Drive and greenway trail system travelway and public safety may be threatened if the settlement and instability are allowed to
continue.
The bottom pipe segment is proposed to be reset and extended by an additional pipe segment to re-align the culvert outlet so
that discharge enters the receiving stream in a direction more conducive to channel stability. Placement of a riprap lined
plunge pool will reduce the pipe system outlet velocities and associated downstream instability. Grade control, toe protection,
and vegetative bank stabilization will relieve some of the receiving stream instability. All of these elements have been
designed to reduce channel instability and with hard structures to withstand the culvert outlet and channel flow velocities.
installtion of these design features will reduce the existing natural plunge pool and channel instability.
1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
The main method by which impacts are minimized during construction is ensure that all construction occurs during dry
conditions through the installation of an upstream impervious dike and pump system. All stream baseflow will be pumped
around the construction area. Existing stream material will be used to construct the plunge pool, grade control structure, and
toe protection, as much as possible,.
•
Page 9 of 14
PCN Form -Version 1.3 December 10, 2008 Version

C?
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
? 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 Quantity
3c. Comments:
4. Complete if Making 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: ? warm ? cool ?cold
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.
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
buffer mitigation? ? Yes ® No
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.

Zone 6c.
Reason for impact 6d.
Total impact
(square feet)
Multiplier 6e.
Required mitigation
(square feet)
Zone 1 3 (2 for Catawba)
Zone 2 1.5
6f. Total buffer mitigation required:
6q. If buffer mitiaation is required, discuss what tvpe of mitigation is proposed (e.a., payment to private mitiqation bank,
permittee responsible riparian buffer restoration, payment into an approved in-lieu fee fund).
Page 10 of 14
PCN Form - Version 1.3 December 10, 2008 Version
6h. Comments:
•
•

Page 11 of 14
PCN Form - Version 1.3 December 10, 2008 Version

ldm? E. Stormwater Management and Diffuse Flow Plan (required by DWQ)
9 11. Diffuse Flow Plan
1
1 a. Does the project include or is it adjacent to protected riparian buffers identified ? 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 ? No
Comments:
2. Stormwater Management Plan
2a. What is the overall percent imperviousness of this project? %
2b. Does this project require a Stormwater Management Plan? ? Yes ® No
2c. If this project DOES NOT require a Stormwater Management Plan, explain why: There is no permanent increase in
impervious area associated with the project.
2d. If this project DOES require a Stormwater Management Plan, then provide a brief, narrative description of the plan:
? Certified Local Government
2e. Who will be responsible for the review of the Stormwater Management Plan? ? DWQ Stormwater Program
? DWQ 401 Unit
3. Certified Local Government Stormwater Review
3a. In which local government's jurisdiction is this project? City of Raleigh, Public works
Department - Storm Water Utility
? 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 ® 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 ® 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
W
Page 12 of 14
PCN Form - Version 1.3 December 10, 2008 Version

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 ® No
(North Carolina) Environmental Policy Act (NEPA/SEPA)?
1 c. 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
? Yes
? No
letter.)
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 ® 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.
The project will not generate wastewater
•
Page 13 of 14
PCN Form - Version 1.3 December 10, 2008 Version

•
5. Endangered Species and Designated Critical Habitat (Corps Requirement)
5a. Will this project occur in or near an area with federally protected species or ? Yes ® No
habitat?
5b. Have you checked with the USFWS concerning Endangered Species Act ? Yes ® No
impacts?
?
Raleigh
5c. If yes, indicate the USFWS Field Office you have contacted. ? Asheville
5d. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical
Habitat?
The project area is not located in a Designated Critical Habitat. Review of element occurances on the North Carolina
Heritage Program GIS Virtual Workroom found no record of federally-listed species within a 0.5 mile radius of the project
area. A historic vascular plant is shown to be present downstream near the confluence of Mine Creek with Crabtree
Creeka approximately 5,000 feet from the proposed project.
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 ? Yes ® No
status (e.g., National Historic Trust designation or properties significant in
North Carolina history and archaeology)?
7b. What data sources did you use to determine whether your site would impact historic or archeological resources?
Wake County and NCOne map data for historical properties was reviewed. There are no historcial properties within 2.0
miles of the proposed project site. The closest three historical properties include Siz Forks Longleaf Pines approximately
3 miles north of the site; William B Umstead site approximately 4 miles west of the site; and Crabtree Creek/Ebenezer
Church Road approximately 4 miles west of the site.
8. Flood Zone Designation (Corps Requirement)
8a. Will this project occur in a FEMA-designated 100-year floodplain? ? Yes ® No
8b. If yes, explain how project meets FEMA requirements:
8c. What source(s) did you use to make the floodplain determination? Wake County GIS data
Stephen Sands

Applicant/Agent's Printed Name Applicant/Agent's Signature Date
(Agent's signature is valid only if an authorization letter from the applicant
is provided.)
Page 14 of 14
PCN Form - Version 1.3 December 10, 2008 Version
•
USGS TOPOGRAPHIC &
PROJECT LOCATION
MAPS
0

? 0
•
• City of Raleigh N
I USINFRASTRUCTUn SC r v?tzt?
OF CAROLINE,, INC. ; W E
1043 E. MOREHEAD STREET. SUITE 203
CHARLOTTE. NCRTH CAROLINA 28204 O 'ROW +
NC LICENSE * C-1950 O
1 inch = 2,000 feet
NORTH HILLS DRIVE
CULVERT REPAIR
USGS TOPOGRAPHIC QUAD
RALEIGH WEST
DATE:3/2011
FIGURE 1
0
SOILS MAP
0
E
1 0
•
• USINFRASTRUCTURE Stjrj?VN
OF CAROLINA, INC. a t w E
1043 E. MCREHEAD STREET. SUITE 203
CHARLOTTE. NORTH CAROLINA 28204 &Z +
NC LICENSE # C-1950 111 s
1 inch= 500 feet
NORTH HILLS DRIVE
CULVERT REPAIR
AERIAL PHOTO AND~YY
EXISTING SOIL TYPES
DATE
M-______-_- ----
FIGURE 2
•
STREAM & RIPARIAN
BUFFER IMPACTS MAPS

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Figure 2- Creenway trail and minor secondary pipe system
0
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•
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•
ENGINEERING &
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• HY-8 Energy Dissipation Report
External Energy Dissipator
•
•
Parameter Value Units
Select Culvert and Flow
Crossing North Hills
Culvert Culvert 1
Flow 393.00 cfs
Culvert Data
Culvert Width 6.0
Culvert Height 6.0
Outlet Depth 3.83
Outlet Velocity 20.64 s
Froude Number 1.86
Tailwater Depth 3.26
Tailwater Velocity 7.79 s
Tailwater Slope (SO) 0.0225
External Dissipator Data
External Dissipator Category Streambed Level Structures
External Dissi ator Type Riprap Basin
Restrictions
Froude Number <3
Input Data
Condition to be used to Compute
Basin Outlet Velocity Best Fit Curve
D50 of the Riprap Mixture
Note: Minimum HS/D50 = 2 is Obtained if
D50 = 0.873 ft
D50 of the Riprap Mixture 0.873
DMax of the Riprap Mixture 2.000
Results
Brink Depth 3.833
Brink Velocity 20.636 s
Depth (YE) 3.086
Riprap Thickness 3.000
Riprap Foreslope .0000
Check HS/D50
Note: OK if HS/D50 > 2.0
HS/D50 1.998
HS/D50 Check HS/D50 is NOT OK
Check HS/D50
Note: OK if 0.1 < D50/YE < 0.7
Check D50/YE 0.283
D50NE Check D501YE is OK
Basin Length (LB) 26.722
Basin Width 23.815
Apron Length 8.722
Pool Length 18.000
Pool Depth (HS) 1.744
TWlYE 1.055
Tailwater Depth (TW) 3.256
Average Velocity with TW 3.979 ft/s
•
•
Critical Depth (Yc) 1.926
Average Velocity with Yc 7.375 s
Downstream Riprap for High TW
Distance: 1 LB
Velocity 17.592 ft/s
Size 2.017
Distance: 2 LB
Velocity 11.551 s
Size 0.870
Distance: 3 LB
Velocity 7.678 ft/s
Size 0.384
Distance: 4 LB
elocity 5.747 s
Size 0.215
0
North Hills Drive
City Project # 512-05-013
USI Project # 060219
0-14 Plunge pool computation results
Span 6.00
Rise 6.00
Culvert Invert Out 276.73
Q (cfs) 393.00
Tailwater WSE 279.99
Brink Depth (Ye) 5.04
Best Fit or Envelope Design? Best Fit
Rip Rap Selected Class II
Rip Rap D50 (in) 14
Brink Velocity (fps) 16.21
Tailwater (Tw) 3.26
Brink Flow Area 24.25
Froude Number (Fr) 1.27
Tw/Ye 0.65
Tailwater Parameter (Co) 2.00
Check D5o/Ye 0.23
Calculated Depth of Pool (hs) 2.25
Desired Depth of Pool (hs) 3.00
Check hs/D50 2.6
Bottom of Pool Elev 273.73
Rip Rap Thickness (31)50 or 2Dmax) (ft) 3.83
Aft Rip Rap Thickness (21)50 or 1.5Dmax) (ft) 2.88
Total Length of Basin (Lb) (ft) 34
Length of Scour Hole (Ls) (ft) 23
Length of Apron (La) (ft) 11
Ideal Width of Basin (ft) 29
Design Width of Basin (ft) 29
Basin Exit Depth (yc) 1.71
Flow Area (Ac) 56
Exit Velocity (fps) 7.07
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•
CONSTRUCTION PLANS
& APPLICABLE
SPECIFICATIONS
•
E
North Hills Drive Culvert Repair
Technical Specifications
•
Table of Contents
LJ
Section Page
SECTION 02145 - BYPASS PUMPING SYSTEMS
2
SECTION 02270 - EROSION, SEDIMENTATION, AND DUST CONTROL 5
SECTION 02830 - GABION WALLS
SECTION 02838 - GRADE CONTROL STRUCTURE
13
15
SECTION 02900 - STREAMBANK, RIPARIAN BUFFER REVEGETATION, AND SITE
STABILIZATION 18
SECTION 02933 - TOP SOILING AND SEEDING
32
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North Hills Drive Culvert Repair
Technical Specifications
SECTION 02145 - BYPASS PUMPING SYSTEMS
1. GENERAL
1.1 SCOPE OF WORK
A. Contractor is required to furnish all materials, labor, equipment, power,
maintenance, associated items, and superintendence to implement temporary
bypass pumping systems as needed for the purpose of maintaining wastewater
and storm drainage flow in all public and private pipes, including individual
service connections, during the execution of the Work.
B. Contractor shall construct and maintain all temporary bypass sewers and drains
and be responsible for all bypass pumping of sewage and drainage that may be
required to allow proper flow of sewage and drainage, inspection, and testing
during the completion of the sanitary sewer and drainage system construction.
1.2 SUBMITTALS
A. SANITARY SEWER BYPASS PUMPING PLAN
The sanitary sewer bypass pumping plan shall be submitted as specified in the
Project Special Provisions.
• B. STORMWATER DRAINAGE BYPASS PUMPING PLAN
The Contractor shall submit a specific detailed description of each proposed
bypass pumping system at least 30 days prior to the intended full-time use of any
bypass pumping system. Submittals shall be in accordance with Section 01300
and as specified herein.
The submittal shall include, but not be limited to, the following:
1) Address baseflow conditions of the main stream including the installation of
the impervious dike, baseflow pump, and removal/reinstallation of the
impervious dike in response to storm events.
2) Address storm event flow of the catch basins connected to the North Hill
Drive culvert so that flow does not enter the culvert, does not impact traveling
public, and is pumped around the construction area.
3) A written description of the plan.
4) Quantity, capacity, and location of all pumping equipment.
5) Pump performance curves.
6) The size, type, and routing of all suction and discharge pipes and the means
of connecting the system.
0 7) Description of controls and emergency power supply.
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North Hills Drive Culvert Repair
Technical Specifications
. 8) Certification indicating the person or persons operating the pumping system
is trained to operate the system. Provide references for the person or persons
manning the system. Each responsible person manning the system shall
have a minimum experience of 3 pumping system operations at 3 different
sites of 5 mgd or greater. Engineer and Owner shall review, but not approve
the bypass pumping system submittal. Engineer shall review for compliance
to performance requirements only.
1.3 PERFORMANCE REQUIREMENTS
The design, installation, and operation of all temporary bypass pumping systems
shall be the Contractor's responsibility. The bypass systems shall meet the
requirements of all codes and regulatory agencies having jurisdiction, including local
noise and light ordinances. Bypass pumping systems shall be equipped with noise
reduction features that limit the noise output to 65 db within 50 feet of the equipment.
2. PRODUCTS NOT USED
3. EXECUTION
3.1 GENERAL REQUIREMENTS
A. Installation shall include furnishing oil, fuel, grease, lubrications, tools, and spare
parts that may be required to maintain the operation of the pump throughout the
construction period, as recommended by the manufacturer. The Contractor shall
be solely responsible for maintaining the temporary bypass pumps and
appurtenances. At the end of the construction period, the Contractor shall
remove the pump and appurtenances.
B. The pumps shall be installed for temporary use only. The Contractor shall be
responsible for proper operation of the complete pumping system, which includes
pump, driver, controls, and appropriate pipe connections, during the construction
period.
C. Adequate hoisting equipment for each pump and accessories shall be
maintained on the site.
3.2 MAINTAINING FLOW IN EXISTING SEWERS AND DRAINS
A. When bypass pumping is required, the Contractor shall supply materials, labor,
equipment, power, maintenance, associated items, and superintendence to divert
the flow of sewage or drainage around the portion of the Work in which
construction is to be performed. The bypass system capacity shall be sufficient to
handle existing plus additional flows during a stormwater event.
B. Flows from all property owners shall not exhibit any service interruptions during
the Work.
0
North Hills Drive Culvert Repair
Technical Specifications
C. Contractor shall be required to make repairs at his own cost on any damage
caused by failure, improper installation, or improper removal of the bypass
system to private, public, or Owner's property to the satisfaction of the Engineer.
D. Contractor shall not be permitted to overflow, pump, or by any other means
convey sanitary sewage to any land, street, storm drain, or water course.
**END OF SECTION**
•
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North Hills Drive Culvert Repair
Technical Specifications
SECTION 02270 - EROSION, SEDIMENTATION, AND DUST CONTROL
1. GENERAL
1.1 SCOPE
This section covers temporary and permanent erosion and sedimentation control of
the project site affected by the construction work.
1.2 DESCRIPTION
The work shall consist of control measures as required by local regulations and by
the Engineer, specified herein, and shown on the Drawings during the life of the
contract to control erosion, sedimentation, and dust.
Erosion control devices shall be installed in the appropriate locations before
construction begins. The Contractor shall establish, construct, and maintain erosion
and sediment control measures throughout the life of the project until temporary
ground cover is established to stop all erosion and sedimentation and to ensure that
all Stormwater, other water and drainage from the job site will pass through some
type of filter system before being discharged and that these areas shall be kept
sufficiently moist to control dust. Wherever possible, soil erosion shall be prevented
at the source. All fines imposed for improper erosion and sedimentation and control
shall be paid by the Contractor responsible for the work.
Temporary erosion and pollution control shall include construction work off-site
where such work is necessary as a result of borrow pit operations, haul roads or
equipment storage sites.
Specific construction specifications and maintenance guidelines for given erosion
control devices are given below and shall serve as a guide for the proper
construction maintenance of each measure. Contractor shall refer to the North
Carolina Erosion and Sediment Control Planning and Design Manual, latest edition,
for the construction and maintenance of any measures not included in these
specifications.
1.3 QUALITY ASSURANCE
The Contractor is required to follow all rules and regulations of the State of North
Carolina, Erosion and Sediment Control Planning and Design Manual and any local
ordinances, latest editions. Where provisions of pertinent rules and regulations
conflict with the requirements of this section, the more stringent requirements shall
govern.
1.4 SUBMITTALS
The following Submittals shall be made in accordance with Section 01300:

MANUFACTURER INFORMATION:
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North Hills Drive Culvert Repair
Technical Specifications
A. A copy of this specification section, with addendum updates included, and all
referenced and applicable sections, with addendum updates included, with each
paragraph check-marked to indicate specification compliance or marked to
indicate requested deviations from specification requirements. Check marks (?)
shall denote full compliance with a paragraph as a whole. If deviations from the
specifications are indicated and, therefore requested by the Contractor, each
deviation shall be underlined and denoted by a number in the margin to the right
of the identified paragraph. The remaining portions of the paragraph not
underlined shall signify compliance on the part of the Contractor with the
specifications. The submittal shall be accompanied by a detailed, written
justification for each deviation. Failure to include a copy of the marked-up
specification sections, along with justification(s) for any requested deviations to
the specification requirements, with the submittal shall be cause for rejection of
the entire submittal with no further consideration.
B. Engineering data sheets as needed to demonstrate compliance with this Section.
A. Material samples; and Manufacturer's installation and maintenance instructions.
2. PRODUCTS
2.1 SILT FENCE
Silt fence shall be nylon reinforced polyester netting with fabric weight in excess of
4.0 ounces per yard and having a built-in cord running throughout the top edge of the
fabric. Silt fence fabric shall be equal to Mirafi 100X, inert to chemicals commonly
found in soil and resistant to mildew, rot, insects, and rodent attack. For standard
strength filter fabric, reinforcement shall be wire fence with a minimum 14 gauge and
maximum mesh spacing of 6 inches. Posts shall be 1.33 lb/linear ft steel and a
minimum length of 5 feet. Posts shall be spaced not more than 6 feet on center. Wire
or plastic zip ties shall have minimum 50 pound tensile strength. Silt fencing shall
meet the requirements of Section 6.62 of the North Carolina Erosion and Sediment
Control Planning and Design Manual.
2.2 FILTER STONE
Filter stone shall be Number 57 washed stone for all silt fence toed in trenches and
inlet protection and Number 4 surge stone for all truck cleaning pads at all job site
haul road entrances.
2.3 SEEDING
Topsoil and seed shall be as specified in Section 02933, Top Soiling and Seeding, or
as stated in Section 3, Vegetative Considerations, of the North Carolina Erosion and
Sediment Control Planning and Design Manual.
2.4 TEMPORARY ROCK CHECK DAM
•
A. DESCRIPTION:
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North Hills Drive Culvert Repair
Technical Specifications
The Temporary Rock Check Dam is intended to slow stream velocities and
permit settling of sediment laden runoff. The Temporary Rock Check dam is to
be installed, maintained, and removed in accordance with the Erosion and
Sediment Control Plan.
B. MATERIALS:
The Temporary Check Dam shall consist of a layer or overlapping layers of filter
cloth placed on the stream bottom, covered by an embankment of NCDOT Class
B Rip Rap. The base of the embankment shall be approximately 4-6 feet in width,
and a minimum of 2 feet in width at the top. The dam shall be no more than 2
feet in height measured from the centerline of the channel, and shall be no higher
than 9-inches below stream bank, whichever is less. The upstream side of the
check dam shall be faced with #5 washed stone.
C. METHOD:
The Check Dam shall be installed and maintained for the duration of the
construction project. The Dike shall be removed at the completion of the project
in accordance with the Erosion and Sediment Control plans.
2.5 IMPERVIOUS DIKE
A. DESCRIPTION:
• The Impervious Dike is intended to retain base stream flows upstream of the
work area to provide dry working conditions at the location of proposed
improvements. Retained base flows are bypass pumped around the work area,
and discharged downstream of the work area. The Impervious Dike is to be
installed, maintained, and removed in accordance with the Erosion and Sediment
Control Plan.
In the event of storms of a magnitude or duration equal to, or greater than 0.5
inches of rainfall, or the Baseflow Pump capacity, whichever is less, the
contractor shall remove the impervious dike from the stream channel until a
minimum of 24 hours has past from the end of the storm event. The Impervious
Dike shall then be re-installed and maintained for the remainder of the project,
unless other storm events occur. The Impervious Dike shall be removed at the
completion of the project in accordance with the Erosion and Sediment Control
plans.
B. MATERIALS:
The Impervious Dike shall consist of 40-pound sand bags or other suitable
containment materials stacked no more than 3 feet in height. The entire formed
dike is to be covered with a polyethylene liner. The base of the Impervious Dike
shall be of sufficient width to provide adequate support and stability, and the
thickness of the dike shall be sufficient to prevent collapse or breaching.
• 2.6 TRUCK WASH CONSTRUCTION ENTRANCE
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North Hills Drive Culvert Repair
Technical Specifications
A. DESCRIPTION:
The work covered by this section consists of furnishing, installing, and
maintaining and removing any and all material required for the construction of a
truck wash construction entrance.
B. MATERIALS:
The filter fabric shall meet the requirements of Section 1056 of the Standard
Specifications for Type 2 Fabric. Stone shall be Class A Stone as specified in
Section 1042 of the Standard Specifications.
C. METHODS:
The Contractor shall install a truck wash construction entrance in accordance
with the details in the plans and at the locations shown in the plans as directed
by the Engineer. Stone shall be rolled or tamped to provide an even stable
surface.
2.7 TREE PRESERVATION AND PROTECTION (North Carolina Erosion and Sediment
Control Planning and Design Manual Practice 6.05.1):
A.1 Construction Specifications:
1) Place barriers to prevent the approach of equipment within the drop line of
trees to be retained.
2) Do not nail boards to trees during building operations.
3) Do not cut tree roots inside the tree drip line.
4) Do not place equipment, construction materials, topsoil, or fill dirt within the
limit of the drop line of trees to be saved.
5) If a tree marked for preservation is damaged, remove it and replace it with a
tree of the same or similar species, 2-inch caliper or larger, from balled and
burlapped nursery stock when activity in the area is complete.
6) During final site cleanup, remove barriers around trees.
A.2 Maintenance:
In the event that damage to protected trees occur, repair any damage to the
crown, trunk, or root system immediately.
1) Repair roots by cutting off the damaged areas and painting them with tree
paint. Spread peat moss or moist topsoil over exposed roots.
0 2) Repair damage to bark by trimming around the damaged area. Taper the cut
to provide drainage, and paint with tree paint.
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North Hills Drive Culvert Repair
Technical Specifications
3) Cut off all damaged tree limbs above the tree collar at the trunk or main
branch. Use three separate cuts to avoid peeling bark from healthy areas of
the tree.
2.8 SEDIMENT FENCE (North Carolina Erosion and Sediment Control Planning and
Design Manual Practice 6.62.1):
A.1 Construction Specifications:
1) Use synthetic filter fabric of at least 95% by weight of polyolefins or polyester,
which is certified by the manufacturer or supplier as conforming to the
requirements in ASTM D 6461. Synthetic filter fabric should contain ultraviolet
ray inhibitors and stabilizers to provide a minimum of 6 months of expected
usable construction life at a temperature range of 0 to 120° F.
2) Ensure that posts for sediment fences are 1.33 lb/linear ft steel with a
minimum length of 5 feet. Make sure that steel posts have projections to
facilitate fastening the fabric.
3) For reinforcement of standard strength filter fabric, use wire fence with a
minimum 14 gauge and a maximum mesh spacing of 6 inches.
E.2 Maintenance:
Inspect sediment fences at least once a week and after each rainfall. Make any
required repairs immediately.
Should the fabric of a sediment fence section collapse, tear, decompose or
become ineffective, replace it promptly.
Remove sediment deposits as necessary to provide adequate storage volume for
the next rain and to reduce pressure on the fence. Take care to avoid
undermining the fence during element.
Remove all fencing materials and unstable sediment deposits and bring the area
to grade and stabilize it after the contributing drainage area has been properly
stabilized.
2.9 EROSION CONTROL MATTING (FOR STREAM RESTORATION):
A. DESCRIPTION:
Furnish material, install and maintain erosion control matting in locations shown
on the Drawings or in locations as directed by the Engineer. Work includes
providing all materials, excavating, backfilling, placing and securing erosion
control matting.
The quantity of erosion control matting to be installed will be affected by the
• actual conditions that occur during the construction of the project. The quantity of
erosion control matting may be increased, decreased, or eliminated entirely at
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North Hills Drive Culvert Repair
Technical Specifications
the direction of the Engineer. Such variations in quantity will not be considered as
alterations in the details of construction or a change in the character of the work.
B. MATERIALS:
1) Matting:
Provide matting to meet the following requirements:
100 % coconut fiber (coir) twine woven into a high strength matrix.
Thickness - 0.30 in. minimum.
Tensile Strength - 1348 x 626 lb/ft minimum
Elongation - 34% x 38% maximum
Flexibility (mg-cm)- 65030 x 29590
Flow Velocity- Observed 11 ft/sec
Weight - 20 oz/SY
Size - 6.6 x 164 ft (120 SY)
"C" Factor - 0.002
Open Area (measured) - 50%
2) Stakes:
Provide wooden stakes 12 in. in length with a notch cut 1 in. from to top.
C. METHODS:
Provide a smooth soil surface free from stones, clods, or debris that will prevent
the contact of the matting with the soil. Place the matting immediately upon final
grading.
Take care to preserve the required line, grade, and cross section of the area
covered.
Unroll the matting and apply without stretching such that it will lie smoothly but
loosely on the soil surface. Bury the top slope end of each piece of matting in a
narrow trench at least 6 in. (150 mm) deep and tamp firmly. Where one roll of
matting ends and a second roll begins, overlap the end of the upper roll over the
buried end of the second roll so there is a 6 in. (150 mm) overlap. Construct
check trenches at least 12 in. (0.3 m) deep every 50 ft. (16 m) longitudinally
along the edges of the matting or as directed by the Engineer. Fold over and bury
matting to the full depth of the trench, close and tamp firmly. Overlap matting at
least 6 in. (150 mm) where 2 or more widths of matting are installed side by side.
Place stakes across the matting at ends, junctions, and check trenches
approximately 1 ft. (90.3 m) apart with notch facing upslope.
Place stakes along the outer edges and down the center of each strip of matting
3 feet (1 meter) apart. Place stakes along all lapped edges 1 ft. (0.3 m) apart.
Refer to details in the plan sheets.
•
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North Hills Drive Culvert Repair
Technical Specifications
The Engineer may require adjustments in the trenching or staking requirements
i to fit individual site conditions.
2.10 DEWATERING BAG
A. DESCRIPTION:
Device is a temporary sediment control BMP which filters sediment laden runoff
through a non-woven filter bag. Sediment laden runoff is pumped to the filter bag
which is set on a flat stabilized surface of Class B Rip Rap. Pumped filtrate
passes through the pervious filter material whereas sediment is unable to pass
through the non-woven filter and is trapped inside the filter.
B. MATERIALS:
Filter bag is constructed of 10 oz Non-woven Geotex material. Filter bag is to be
set on a level pad consisting of 8-inches of Class B Rip Rap.
C. CONSTRUCTION SPECIFICATIONS:
1) Select level, stable location for dewatering bag. Device shall be placed such
that filtrate may return to natural stream without eroding overland route or the
natural stream. Location of the device should avoid discharge of filtrate into
work area.
•
2) Excavate pad area for dewatering bag to depth of 8-inches below grade.
Remove excavated soil.
3) Place filter fabric on top of excavation, allowing filter fabric to extend
downstream 6-feet onto the undisturbed embankment.
4) Place 8-inches of Class B Rip Rap on top of filter fabric and smooth to even,
level surface.
5) Install filter bag on Rip Rap pad.
6) Connect pump discharge hose or gravity feed to filter bag with high strength
strapping.
7) Maintain, and remove filter bag at completion of the construction project in
accordance with the Erosion Control Plans.
8) The contractor must replace the bag when it becomes clogged or filled with
sediment
The Engineer may require adjustments or modifications to fit individual site conditions.
3. EXECUTION
3.1 GENERAL
A. STANDARDS:
Provide all materials and promptly take all actions necessary to achieve effective
erosion and sedimentation control in accordance with local enforcing agency
guidelines and these specifications.
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North Hills Drive Culvert Repair
Technical Specifications
IMPLEMENTATION:
The work shown on the approved plans and working drawings shall be
considered a minimum requirement. What is shown shall not relieve the
Contractor of the responsibility to actively take all steps necessary to control
erosion control and sedimentation.
**END OF SECTION"
•
•
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North Hills Drive Culvert Repair
Technical Specifications
SECTION 02830 - GABION WALLS
1. GENERAL
1.1 Description:
Work covered by this special provision consists of constructing stone filled gabions,
including excavation, placing stone base, placing foundation conditioning material,
backfill and geotextile fabric in accordance with the requirements as directed by the
Engineer, and in accordance with the provisions of these specifications.
2. MATERIALS:
2.1 Gabion Baskets: Gabion baskets shall conform to the nominal dimensions shown
below and shall be within +/- 3% of the manufacturer's stated size:
Nominal Length = 6 feet, 9 feet or 12 feet
Nominal Width = 3 feet
Nominal Height = 36 inches
2.2 Wire mesh for use in gabion baskets shall be made of galvanized steel wire having a
minimum diameter of 0.105 inch (12 gage), a minimum tensile strength of 60,000 psi,
and be galvanized in accordance with ASTM A90 at a minimum rate of 0.80 ounce
per square foot.
• The wire mesh shall be twisted to a uniform size not to exceed 4.5 inches. The
mesh shall be fabricated in such a manner so to be non-raveling.
2.3 Stone for Gabion Baskets: Stone for gabion baskets shall be durable and free from
seams and cracks. Stone shall weigh between 4 pounds and 30 pounds, except that
+/- 5% of the individual stones may weigh less than 4 pounds or more than 30
pounds. At least 50% of the individual stones shall weigh more than 10 pounds.
Weathered stone shall not be used. Native streambed material approved by the
Engineer shall be used, when possible. The top 4 inches of basket shall be "dressed
out" with #67 stone to fill voids.
2.4 Stone Base: Stone base shall meet the requirements of Article 1042-1 for Class A
stone.
2.5 Foundation Conditioninq Material: Foundation conditioning material shall meet the
requirements of Section 300.
2.6 Geotextile Fabric: Geotextile material shall meet the requirements of Section 1056
for Type 2 Fabric.
3. PROCEDURE:
Gabions shall be fabricated in such a manner that the sides, ends, lid, and
diaphragms can be assembled at the construction site into rectangular baskets of the
specified sizes. Gabions shall be of single unit construction whereby the base, lid,
ends, and sides, shall be either woven into a single unit or one edge of these
13
North Hills Drive Culvert Repair
Technical Specifications
• members connected to the base section of the gabion in such a manner that strength
and flexibility at the point of connection is at least equal to that of the mesh.
Where the length of the gabions exceeds its horizontal width, the gabion shall be
equally divided by diaphragms, of the same mesh and gage as the body of the
gabions, into cells the length of which does not exceed the horizontal width. The
gabion shall be furnished with the necessary diaphragms secured in proper position
on the base in such a manner that no additional tying at this junction will be
necessary.
All perimeter edges of the mesh forming the gabion shall be securely clip bound or
selvedged so that the joints formed by tying the selvedges have at least the same
strength as the body of the mesh. Tie and connection wire shall be supplied in
sufficient quantity to securely fasten all edges of the gabion and diaphragms and to
provide at least 2 cross connecting wires in each cell whose is 1/3 or 1/2 the width of
the gabion, and at least 4 cross connecting wires in each cell whose height equals
the width of the gabion. The wire shall meet the same specifications as for wire used
in the mesh, except that it may be not more than 2 gages smaller, and shall be
secured through 2 open loops of the cage.
Each gabion unit shall be assembled by binding together vertical edges with wire ties
on approximately six-inch spacing or by a continuous piece of connecting wire
stitched around the vertical edges with a coil approximately every 4 inches.
Empty gabion units shall be set to line and grade as shown on the plans or as
• directed by the Engineer.
A standard fence stretcher, chain fall or iron rod may be used to stretch the wire
baskets and hold alignment.
Gabions shall be filled with stone and to assure alignment, voids and bulges must be
kept to a minimum. After a gabion has been filled, the lid shall be bent over until it
meets the sides and edges. The lid shall be secured to the sides, ends, and
diaphragms with the wire ties or connecting wire in the manner described herein for
assembling.
**END OF SECTION**
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North Hills Drive Culvert Repair
Technical Specifications
• SECTION 02838 - GRADE CONTROL STRUCTURE
1. GENERAL
1.1 SCOPE OF WORK
Install grade control structures at locations shown on the plans per details on the
drawings. Work for installing the structures shall include but is not limited to all
necessary excavation, furnishing boulders, stockpiling, boulder placement, backfill,
and maintaining an approved stone to be used to construct in-stream structures,
stream crossings and for use in other locations as directed by the Engineer.
1.2 RELATED WORK
A. Sections 02221 Trenching, Backfilling and Compaction
02270 Erosion and Sedimentation Control
02271 Rip Rap
1.3 REFERENCE STANDARDS
The Contractor is required to follow all rules and regulations of the State of North
Carolina, Erosion and Sediment Control Planning and Design Manual and any local
ordinances, latest editions. Where provisions of pertinent rules and regulations
conflict with the requirements of this section, the more stringent requirements shall
govern.
1.4 GUARANTEE AND REPLACEMENT
A. Rejection of Work and Materials: The Engineer shall reject placed stone or
boulders that do not conform to this Section and Contractor shall immediately
remove and relay the stone or boulders to conform with said sections.
1) Stone and boulders shall be rejected, which are either delivered to the job
site or placed, that does not conform to this Section. Rejected stone or
boulders shall be removed from the project site by Contractor and at his
expense.
2. PRODUCTS
2.1 MATERIALS
Boulders shall be of sound, solid rock with no apparent fractures or fissures.
Boulders under the header rock shall be at least 3'x2'x1.5' in dimension. Boulders
for header rock shall have minimum dimensions of 3'x2'x1'. Allowable tolerance to
the surface elevation shall be plus or minus 2". Boulders shall be relatively flat on
either side in the same dimension, preferably the long dimension, and must have
smooth ends.
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• Stone for "Boulders" shall consist of either blasted granite quarry boulders stockpiled
on-site or native streambed material approved by the Engineer. The stone shall be
sound, tough, dense, resistant to the action of air and water, and suitable in all other
respects for the purpose intended.
3. EXECUTION
3.1 WATER CONTROL
A. Prior to commencing work on boulder, rock, and riprap placement, install water
control measures as required to perform work in dry conditions. Water control
measures shall include, but are not limited to, diversions, sheet pile, sumps with
pumps, or other means necessary to maintain the level of groundwater below
subgrade elevation and to divert surface water away from the work area. The
Contractor is responsible for investigating and familiarizing himself with respect
to all site conditions that may affect the work, including surface water, level of
groundwater, and time of year the work is to be done.
3.2 INSTALLATION
A. The construction methods, compaction equipment, and appurtenances for stone,
boulders and gravel shall be in accordance with North Carolina Department of
Transportation Standard Specifications.
• B. Stone and boulders shall be placed to the limits and grades shown on the
Drawings.
C. Channel slopes, bottoms, or other areas that are to be protected with riprap shall
be free of brush, trees, stumps, and other objectionable material and be graded
to a smooth compacted surface. Contractor shall excavate areas to receive
riprap to the subgrade for granular bedding. The subgrade for bedding materials
shall be stable. If unsuitable materials are encountered, they shall be removed
and replaced in accordance with Section 02221 of the specifications. Unsuitable
materials shall be disposed of from the site by Contractor at his expense. After
an acceptable sub grade for granular bedding material is established, the
bedding shall be immediately placed and leveled to the subgrade elevation.
Immediately following this, the riprap shall be placed. If bedding material is
disturbed for any reason, it shall be replaced and graded at Contractor's
expense. In-place bedding materials shall not be contaminated with soils, debris,
or vegetation before the riprap is placed. If contaminated, the bedding material
shall be removed and replaced at Contractor's expense.
D. The Engineer may adjust the excavation limits to improve the structure subgrade
conditions during construction. Excavated material shall be placed on the
upstream side of the structures or as directed by the Engineer.
E. Unless otherwise approved by the Engineer, excavation to prepare the subgrade
for the installation of in-stream structures shall be consecutive and continuous.
• Once the excavation of a structure has begun, the structure shall be completed
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by the end of the workday. All equipment shall be removed from the stream at
the end of each workday.
F. Any accumulation of sediment in the channel shall be cleaned as needed during
construction and at the end of construction. No separate payment will be made
for this clean-up work. Any disturbed soil shall be seeded using "Temporary
Seeding".
3.3 PLACEMENT
A. Following acceptable placement of granular bedding, stone and boulder
placement shall commence as follows:
1) Machine and Hand Placed Boulders: Boulders shall be placed on the
prepared slope or channel bottom areas in a manner that will produce a
reasonably well-graded mass of stone with the minimum practicable
percentage of voids. Boulders shall be machine placed, unless otherwise
permitted in the Drawings or specifications.
a. After the boulders have been placed, hand placing or rearranging of
individual stones by mechanical equipment shall be required to the extent
necessary to secure a flat uniform surface and the specified depth of
riprap, to the lines and grades as shown on the Drawings.
•
**END OF SECTION**
•
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SECTION 02900 - STREAMBANK, RIPARIAN BUFFER REVEGETATION, AND SITE
STABILIZATION
1. GENERAL
1.1. SECTION INCUDES
A. Furnish all labor, materials, supplies, equipment, tools, and incidentals to
complete the streambank stabilization as shown on the Drawings and as
specified herein. The work shall include, but not be limited to the following:
1) Procurement of all applicable licenses, permits, and fees.
2) Ascertainment of utility locations prior to construction.
3) Removal of all contiguous (invasive) plant material.
4) Supplying topsoil for all areas to be vegetated. All topsoil preparation, testing,
conditioning, fertilization, and insuring the overall quality of the material.
Topsoil stockpiled from other construction operations may be used.
5) Soil preparation and fine grading.
6) Furnish and installation of live staking and erosion control mat as shown on
• the Drawings.
7) Furnish and install riparian buffer revegetation including grasses, shrubs,
understory trees, and canopy trees, as shown on the Drawings.
8) Pruning of plant materials as specified and approved by the Engineer.
9) Supplying and spreading mulch as specified herein.
10) Maintenance and guarantee of all stabilization materials.
11) Final cleanup and all other work required to complete the job in accordance
with the Drawings and Specifications.
1.2. RELATED WORK
A. Section 02221: Trenching, Backfilling, and Compaction
B. Section 02993: Topsoiling and Seeding
1.3. SUBMITTALS
A. Materials List: Submit a list of all plants to be installed, including names and
addresses of sources, to Engineer within 21 calendar days after receipt of Notice
to Proceed.
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0B. Submitted samples of all materials for inspection and approval upon the request
of the Engineer in accordance with Section 01300.
1.4. REFERENCE STANDARDS
A. American Nursery and Landscape Association (ANLA): American National
Standards Institute (ANSI)
1) ANSI Z60.1-90 - Nursery Stock
B. American Society for Testing and Materials (ASTM)
1) ASTM D5268-92 - Standard Specification for Topsoil Used for Landscaping
Purposes
C. Where reference is made to one of the above standards, the revision in effect at
the time of bid opening shall apply.
1.5. PROTECTION OF EXISTING FEATURES
A. Protect all existing site features including, but not limited to, existing buildings,
equipment, underground utilities, walls, materials, trees, etc. Any existing site
features damaged by willful or negligent acts of Contractor shall be replaced or
repaired in a manner satisfactory to the Engineer and at no additional cost to the
• City.
B. The above provision applies to on-site damage as well as to that which may
occur to adjacent properties.
C. Tree Protection Standards During Construction:
1) Accidental Poisoning: During the construction, Contractor shall not cause, or
permit the cleaning of equipment or material, or the storage or disposal of
waste material including, but not limited to, paints, solvents, asphalt,
concrete, mortar, or any other material harmful to the life of a tree, within the
root zone of each tree, or group of trees. .
2) Root Pruning Specifications: When the cutting of tree roots is necessary,
Contractor shall hire an arborist that is ISA certified. Each final cut must be
made as cleanly as possible for all roots over 3-in in diameter using the
following method:
a) The line of excavation will be drawn out and appropriate excavation
equipment used to clear the area at least 6-in in front of the actual
finished excavation line. Roots can then be cut using tools such as axes,
stump grinders, or trenchers.
b) Each root over 3-in in diameter will then be cut cleanly back to the final
. excavation line using a stump grinder operated by an experienced,
licensed arborist. A sharp hand or bow saw is acceptable for roots under
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• 3-in in diameter. Axes and trenchers do not cut roots cleanly and will not
be used for final root cuts.
3) No damaging attachments, wires, signs, permits or other objects may be
fastened by any means to any tree preserved on this project.
1.6. SITE CONDITIONS
A. Environmental Requirements: Install frost-tender plants only after danger of frost
is past or sufficiently before frost season to allow for establishment before first
frost. Do not install plants in frozen soil.
B. Contiguous (Invasive) Plant Removal: Removal all contiguous (invasive) plants
from the entire construction area prior to any re-planting efforts. Contiguous
plants include, but not limited to, the following plant list::
i.
ii.
iv.
V.
vi.
vii.
viii.
• ix.
X.
xi.
xii.
Ailanthus altissima (Tree-of-Heaven)
Albizia julibrissin (Mimosa)
Elaeagnus umbellate (Autumn Olive)
Hedera helix (English Ivy)
Lespedeza cuneata (Korean or Sericea Lespedeza)
Ligustrum sinense (Chinese Privet)
Lonisera japonica (Japanese Honeysuckle)
Microstegium vimineum (Japanese Grass)
Paulownia tomentosa (Princess Tree)
Pueraria lobata (Kudzu)
Rosa multiflora (Multiflora Rose)
Wisteria sinensis (Chinese Wisteria)
C. Live Staking: Install live stakes while dormant between December 1 and March
15.
D. Protection: Determine location of all underground utilities prior to installation of
plants. Avoid damage to utility lines by hand excavating in close proximity to
lines.
E. Sequencing: Coordinate installation of plants with seeding work to ensure that
damage will not occur. Install plants after final grades are established and prior to
seeding.
F. Environmental Conditions: Contractor shall inspect planting areas to verify soils,
drainage, and compaction. Start of planting work constitutes acceptance of these
conditions.
1.7. GUARANTEE AND REPLACEMENT
A. Guarantee trees, shrubs, ground covers, and other plant materials to root and
thrive free from defects from any cause until one year after acceptance of project.
C
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B. Replace plants when they are no longer in a satisfactory condition as determined
by the Engineer prior to final acceptance and prior to the end of the one-year
warranty period. This includes plants that die back and loose the form and size
originally specified.
1) Make replacements within 7 days of notification from the Engineer.
2) Replace trees in the spring planting season only, unless approved otherwise.
Remove dead plants within 2 days of notification.
C. All replacements shall be of the same kind and size as originally specified and
shall be installed as described in the contract documents. Repairs and
replacements shall be made at no expense to City.
D. Guarantee shall apply to originally specified and installed plants and other
landscape materials, and any replacements made during the construction period
and during the one-year warranty period.
E. Willow stakes shall be evaluated during the autumn after planting (September)
and replacement cuttings shall be done while dormant, during the following early
spring (March) of the following year. The Contractor shall remove and replace
dead or dying willow stakes as directed.
F. Herbicide: Coordinate type of herbicide with the Engineer.
1.8. PLANTING TIME AND COMPLETION
A. Plants shall be planted only when weather and soil conditions permit and in
accordance with locally accepted practices, and as approved by the Engineer.
B. Trees shall be planted in same growing season in which they were dug.
2. PRODUCTS
2.1. QUALITY
A. All materials used for construction shall be new and without flaws or defects of
any type, and shall be the best of their class and kind.
2.2. DIGGING, WRAPPING, HANDLING AND STORAGE
A. Plants shall be dug and prepared for shipment in a manner that will not cause
damage to branches, shape, and future development after planting.
B. Balled and burlapped plants shall be nursery grown stock adequately balled with
firm, natural balls of soil in sizes and ratios conforming to the American Standard
for Nursery Stock as cited above. Balls shall be firmly wrapped with non treated
burlap, secured with wire or jute. Broken balls will not be accepted.
•
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0 C. Protect all materials used for construction from damage, deterioration, or loss of
any kind while in storage and construction.
2.3. TOPSOIL
A. Topsoil shall be fertile, natural soil, typical of the locality, free from large stones,
roots, sticks, clay, peat, weeds, and sod, and obtained from naturally well-
drained areas. It shall not be excessively acid or alkaline (pH range of 5.5 to 7.4)
nor contain toxic material harmful to plant growth. Topsoil stockpiled under other
Sections of this division may be used, but the Contractor shall furnish additional
topsoil at his/her own expense, if required.
B. No topsoil shall be delivered or spread in a frozen or muddy condition.
C. Topsoil shall conform to ASTM D5268-92.
2.4. WATER
A. Water used in this work shall be furnished by the Contractor and shall be suitable
for irrigation and free from ingredients harmful to plant life. Hose, labor, materials
and other watering equipment required for the work shall be furnished by the
Contractor.
2.5. PLANT MATERIALS LIST
A. Grass seed shall consist of minimum of four species from the following list. Each
selected species shall represent between 20 to 30 percent of the total seed mix.
Carex stricta (Sedge)
Dactylis glomerata (Orchardgrass)
Panicum clandestinum (Deer tongue)
Panicum virgatum (Switchgrass)
Pennisetum glaucum (Brown Top or Pearl Millet)
Secale cereale (Winter Rye or Rye Grain)
Sorghum bicolor (Sudangrass)
B. Shrubs shall consist of a minimum of four species from the following list. Each
selected species shall represent between 20 to 30 percent of the total shrub
count.
Calycanthus floridus (sweet-shrub)
Corylus americana (American hazel, hazelnut)
Hamamelis virginiana (witch hazel)
Hydrangea arborsescens (wild hydrangea)
Llex verticillata (winterberry)
Kalmia latifolia (mountain laurel)
Rhododendron maximum (rosebay rhododendron)
Xanthorhiza simplicissima (yellowroot)
C. Small trees shall consist of a minimum of four species from the following list.
• Each selected species shall represent between 20 to 30 percent of the total small
tree count.
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• Asimina triloba (pawpaw)
Cercis canadensis (eastern redbud)
Cornus florida (flowering dogwood)
Gorodnia lasianthus (loblolly bay)
Salix caroliniana (swamp willow)
Salix nigra (black willow)
Sassafras albidum (sassafras)
Ulmus rubra (slippery elm)
D. Large trees shall consist of a minimum of two species from the following list.
Each selected species shall represent between 40 to 60 percent of the total large
tree count.
Acer saccharum (sugar maple)
Betula nigra (river birch)
Linodendron tulipifera (tulip poplar)
Pinus palustris (longleaf pine))
2.6. TREES AND SHRUBS
A. Quantities - Shrubs shall be furnished and installed a density of 1,200 shrubs per
acre. Small and large trees shall be furnished and installed at a density of 500
trees per acre so that 320 trees per acre survive after one year.
B. Quality - Use plants that are symmetrical and typical of its species; healthy, well
• branched, and well proportioned in respect to height and width; free from
disease, injury, insects, and weak roots; and conforming to the requirements of
the American Standard for Nursery Stock, ANSI 260.1 1990. All plants are
subject to inspection. All trees shall have been grown in areas of a zone 4
hardiness or colder.
C. Botanic and Common Names - Nomenclature is in conformance with standard
horticultural practice in the area. Plants are to be delivered to the site with tags
bearing the botanic name as indicated by the plant list.
D. Plant Protection: Plants shall be handled so that roots are adequately protected
at all times from drying out and from other injury. Protect balls of balled plants
which cannot be planted within 12 hours of delivery with soil or other suitable
materials. Where possible, store plants in the shade. Keep all plant roots moist
before, during, and after planting.
2.7. LIVE STAKING
A. Species used shall be harvested during dormancy when no leaves are present. If
the construction/planting sequence allows, the cuttings may be propagated at a
nursery over winter to develop roots before planting.
B. See Drawings for installation details and live staking density specifics. These
units shall be free from all side branches. Stakes shall be 0.05- to 1.5-inch in
diameter and 2- to 3-feet long with the bottom end cut off at an angle and the top
end with a straight cut.
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0 C. Live branch cuttings shall consist of a mix of all three of the following species.
Comus sericea sloloni/era Red osier dogwood
Salix discolor Pussy willow
Salix sericea Silky willow
D. The use of chainsaws, weed whips with metal blades, loppers, and pruners shall
be permitted, provided that they are used in such a manner that they leave clean
cuts. Live plant materials shall be cut and handled with care to avoid bark
stripping and trunk wood splitting. Cuts shall be made 8-in to 10-in from the
ground when cutting from the approved, natural growing, source sites. Cuts shall
be made flat or at a blunt angle. This assures that the source sites shall
regenerate rapidly.
E. The harvesting site must be left clean and tidy. Large unused material shall be
cut up into 16-in lengths and evenly distributed around the site.
F. Live branch cuttings shall be bound together securely with twine at the collection
site, in groups, for easy handling and for protection during transport. Live branch
cuttings shall be grouped in such a manner that they stay together when
handled. Five cuttings shall be allowed per bundle.
G. During transportation, the live cut branch groups shall be placed on the transport
vehicles in an orderly fashion, to prevent damage and to facilitate handling. The
live cut plant materials shall be covered with a tarp or burlap material during
transportation.
H. Upon arrival at the construction site, live branch cuttings shall be inspected for
acceptability. Live cut material shall be collected from sources that shall be
approved prior to the commencement of cutting operations. Only healthy, well-
branched, and disease-free stock shall be acceptable.
1. All cut plant materials shall arrive on the job site within 8 hours of cutting. Prior to
planting, the cuttings shall be soaked by submerging at least 2/3 of their length in
containers of water, free from any harmful oil, chemical, sprays, or other
materials. The cuttings shall be kept in the shade at all times.
Plants not installed on the day of arrival at the job site shall be stored and
protected until installation. Unless otherwise specified, all live plant materials will
be used within 24 hours after cutting. Outside storage locations shall be
continually shaded and protected from the wind. Live cut plant material shall be
heeled in moist soils, or kept in water. Live cut materials shall be protected from
drying at all times.
2.8. EROSION CONTROL MAT
A. Photo Degradable Erosion control blanket to be placed over seeded areas as
shown on the Drawings shall consist of wood excelsior with 80% 6-inch fibers or
greater fiber length with the top of the blanket covered with photo-degradable or
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biodegradable netting. Blanket shall be of consistent thickness with fibers evenly
distributed throughout the entire area of the blanket. Blanket shall be
recommended by contractor/manufacturer based on ground slope, flow
velocities, flow shear stresses, and existing soil characteristics. Install and
anchor blanket in accordance with manufacturer's recommendations.
2.9. TRANSPLANTS
A. Trees, shrubs, saplings, seedlings, whips, clumps, and wetland sod mats will be
identified for salvage in the field.
B. All salvageable trees, shrubs, saplings, seedlings, whips, clumps, and wetland
sod mats will be removed prior to any activity within the construction easement. If
project timing allows, plants should be removed during dormancy, generally
between the months of November and March, to minimize shock.
C. A tree spade or hand shovel will be used to collect desirable plants. Tree or
shrub root ball diameter will be approximately equal to the diameter of the crown
of the plant.
D. Transplants must be approved by the Engineer prior to collection. Transplants
shall not be collected from protected jurisdictional wetland sources. Vacant
transplant areas will be groomed and brought back to line and grade if located
outside of the construction easement.
• 2.10. MATERIALS FOR STAKING, GUYING, AND WRAPPING TREES
A. Refer to Drawings.
2.11. SEED MIXES
A. Seed Mixes: Refer to Section 02985.
2.12. RESTORATION
A. Furnish and install trees and shrubs as shown on the Drawings. Plants, except
for live stakes, shall be nursery grown under climatic conditions similar to those
in the locality of the project and shall conform to the variety and sizes indicated.
Plants shall conform also to the indicated botanical names and standards of size,
culture, and quality for the highest grades and standards as adopted by the
ANLA for nursery stock as specified in ANSI Z60.1-90.
B. All plants shall be freshly dug. No heeled-in plants or plants from cold storage
other than dormant willow stakes shall be used. All plants shall be typical of their
species or variety and shall have a normal habit of growth. Plants shall be sound,
healthy and vigorous, well branched, and densely foliated when in leaf; shall be
free of disease, insect pests, eggs, or larvae, and shall have healthy, well-
developed root systems. All parts of the plant shall be moist and shall show
0 active green cambium when cut.
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C. The height of the trees, measured from the crown of the roots to the top of the
top branch, shall not be less than the minimum size designated. The trunk of
each tree shall be a single trunk growing from a single unmutilated crown of
roots. No part of the trunk shall be conspicuously crooked as compared with
normal trees of the same variety. The trunk shall be free from sunscald, frost
cracks, or wounds resulting from abrasions, fire, or other causes. No pruning
wounds shall be present having a diameter of more than 2-in and such wounds
must show vigorous bark on all edges.
2.13. INSPECTION OF PLANT MATERIALS
A. Plants shall be subjected to inspection and approval by the Contractor upon
delivery for conformity to specification requirements as to quality, size, and
variety. Such approval shall not impair the right of inspection and rejection by the
Engineer during the progress of the Work.
3. EXECUTION
3.1. GENERAL
A. Inspection: Examine the substrate in which the work is to be performed. Do not
proceed until unsatisfactory conditions have been corrected.
• B. Dimensions: All scaled dimensions are approximate. Before proceeding with any
work, carefully check and verify all dimensions and quantities and immediately
inform the Engineer of any discrepancy between the drawings and/or
specifications and actual conditions.
C. Coordination: Coordinate work with other trades to insure proper sequencing of
construction.
3.2. SOIL PREPARATION
A. Contractor will locate and install all plant material according to the Drawings.
Actual planting locations may vary due to in-field conditions and as directed by
the Engineer.
B. Weed and Debris Removal: All ground areas to be planted shall be cleaned of all
weeds and debris prior to any soil preparation or grading work. Weeds and
debris shall be disposed of offsite.
C. Contaminated Soil: Do not perform any soil preparation work in areas where soil
is contaminated with cement, plaster, paint, or other construction debris. Bring
such areas to the attention of the Engineer and do not proceed until the
contaminated soil is removed and replaced.
D. Ripping and Scarification: Rip, scarify, or otherwise loosen all areas to a depth of
6-in, removing all obstructions encountered in excavating, such as loose rock,
construction debris, etc.
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E. Soil Conditioning: After soil preparation has been completed and high and low
spots graded, add soil amendments as indicated below and roto-till, making
repeated passes with the cultivator to the depth specified until the amendments
have been thoroughly mixed.
F. Contractor shall perform all finish grading required by the construction plans to
create or maintain surface drainage into catch basins, drainage structures, etc.
3.3. FINE GRADING
A. Once weeding, soil preparation, and soil conditioning have been completed and
soil has been thoroughly water settled, all planting areas shall be smooth-graded,
ready for placement of plant materials and for seeding.
B. Grades: Finish grades shall conform to site grading plans and produce a smooth
even surface without abrupt changes, including the interface with the adjacent
undisturbed landscape. Minor adjustments of finish grades shall be made at the
direction of the Engineer, if required.
C. Drainage: AH grades shall provide for natural runoff of water without low spots or
pockets. Flow-line grades shall be accurately set and shall be not less than 2
percent gradient wherever possible.
0D. Shrub Areas: Finished grades shall be 1-1/2-inches below top of adjacent
pavement, headers, curbs, or wall, unless otherwise indicated on the Drawings.
E. Slopes: Tops and toes of all slopes shall be rounded to produce a gradual and
natural- appearing transition between relatively level areas and slopes.
3.4. PLANTING OPERATIONS
A. Established Location: The Engineer to approve location of trees and shrubs
before any planting occurs.
B. Planting pits will be circular in outline with roughened vertical or sloped sides.
Use a small bucket or motorized auger with drill bit to create a hole equal to the
depth and twice the diameter of the root ball. Planting pits will be dug so that the
top of the root ball is level or approximately 1- to 2-in above final grade to
account for settling. Planting in vegetated riprap and planted rock will follow
details contained in the Drawings.
C. Tree pits shall be 2-ft greater in diameter than the root ball of the tree and
sufficiently deep to allow for a I-ft thick layer of compacted loam and peat moss
beneath the ball.
D. Shrub beds shall be tilled to 18-in below top of loam.
•
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E. Plants shall be set in center of pits plumb and straight and at such a level that
after settlement, the crown of the plant ball will be at the surrounding finished
grade.
1) When balled and burlapped plants are set, amended topsoil shall be
compacted around bases of balls to fill all voids. All burlap, ropes, or wires
shall be removed from the top third of the balls. Plastic burlap shall be
completely removed.
F. Planting:
1) Excavate planting pit to depth such that the plant, when planted, shall be at
finish grade.
2) For B&B material, untie and remove burlap from top third of root ball on
balled and burlapped material. Remove wire baskets from top and sides of
root ball. Remove twine from around tree trunks.
3) Backfill one half of pit with backfill mixture and water in thoroughly before
placing any more backfill. Do not work wet soil.
4) Fertilize trees and shrubs with specified fertilizer at the rate recommended by
the manufacturer.
5) Plant backfill mixture amended topsoil for backfilling all tree pits shall have 3
pounds of fertilizer and I pound of bone meal per tree and I pound of fertilizer
and 112 pound of bone meal per shrub, incorporated with peat moss at a
ratio of 2 parts loam to I part peat moss. Amended topsoil shall be backfilled
in layers of not more than 9-in and each layer watered sufficiently to settle
before the next layer is put in place.
6) Amended topsoil around balls shall be thoroughly compacted and watered.
Immediately after the plant pit is backfilled, a saucer or shallow basin slightly
larger than pit shall be formed with a ridge of soil to facilitate and contain
watering. Water in thoroughly on day of planting. Do not work wet soil.
7) Stake or guy all trees.
8) Remove from the site excess soil resulting from tree planting and mulching
operations.
G. Spray all plants with anti-desiccant, including trunk, branches, foliage, and buds.
Follow manufacturer's instructions and recommendations for application of anti-
desiccant.
H. Relocated plants shall be removed and relocated according to ANLA standards
and guaranteed for 1 year after installation.
1. All woody plant material will include a water basin or berm no less than 6-in in
height placed at the outer limit of the root ball. Surplus soil remaining after
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backfilling is completed will be used to construct the water basin. Berms created
on flat ground should close around the entire circumference of the planting pit.
Berms occurring on a sloped surface will be open to the uphill side and built in
such a way that they capture and retain water. Water basins will be completely
filled in a minimum of2-in deep with shredded or chipped wood mulch.
Directly after backfilling/planting, each plant will be deep watered at a rate of 15
gallons per cubic yard of plant basin.
K. Wetland herbaceous plants will be planted in groupings of the same species,
maintaining the on center diagonal spacing designated in the planting schedule.
To replicate natural stands of herbaceous vegetation and to aid in project
monitoring, plant groupings will be equivalent to the number of plants per nursery
flat.
3.5. LIVE STAKING
A. The Contractor will use augers, stingers, hand-held dibble bars, or similar
method to prepare planting pits for willow cuttings or bundles. Cuttings will be
inserted in the ground with the bud scars or tip pointing upward and to a sufficient
depth such that the butt end of the cutting penetrates the water table. Earth will
be tamped around the cuttings or bundles to insure proper soil contact. Following
installation, all live stakes or bundles will be pruned so that no more than I-ft to 2-
ft of the cuttings are aboveground.
3.6. TOE PROTECTION
A. Excavate a trench at the toe of the slope to a depth shown on the Drawings.
B. Place vegetated coir roll in the trench and drive stakes between the binding twine
and coir fiber. Stakes should be placed on both sides of the roll on 2 to 4 feet
centers depending upon anticipated velocities. Tops of the stakes should not
extend above the top of the fiber roll.
C. In areas that experience wave action, notch outside of stakes on either side of
the fiber roll and secure with 16-gauge wire.
3.7. EROSION CONTROL MAT
A. Install erosion control mat over properly seeded and prepared subgrade in
accordance with manufacturer's recommendations.
B. On slopes, the Contractor shall provide against washouts by an approved
method. Any washout which occurs shall be regraded and reseeded at the
Contractor's expense until good sod is established.
3.8. WRAPPING, GUYING, AND STAKING
A. Trees shall be inspected by the Engineer for injury to trunks, evidence of insect
infestation, and improper pruning before wrapping.
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Technical Specifications
B. Wrap trunks of all trees spirally from bottom to top with material specified and tie
securely. The wrapping shall overlap and entirely cover the trunk from the ground
to the height of the second branches and shall be neat and snug. Overlap shall
be approximately 2-in.
C. All shade trees, flowering trees, and evergreen trees 5-ft to 6-ft in height and
larger shall be staked in accordance with the tree staking detail.
3.9. PRUNING AND MULCHING
A. Each plant shall be pruned at the time of planting in accordance with ANLA
standards to preserve the natural character of the plant and as directed by the
Engineer.
B. Pruning shall be done with clean, sharp tools.
C. Cuts over I-in in diameter shall be painted with an approved tree paint. Paint shall
cover all exposed cambium as well as other exposed living tissue. Paint shall be
waterproof, adhesive and elastic, antiseptic, free from kerosene, coal tar,
creosote, or any other material injurious to the life of the tree.
D. Immediately after planting operations are completed, all tree pits shall be covered
with a 4-in minimum layer of the specified mulch and shrub and ground cover
beds shall be treated with weed retardant in accordance with manufacturer's
instructions and covered with a 3-in layer of mulch as indicated on the Drawings.
3.10. OBSTRUCTIONS BELOW GROUND
A. In the event that underground boulders, underground construction work, or
obstructions are encountered in any pit excavation work under this Contract,
alternate locations may be selected by the Engineer at no additional cost to the
City.
3.11. MAINTENANCE
A. Maintenance shall begin immediately after each plant is installed. Plants shall be
mulched, weeded, pruned, sprayed, fertilized, cultivated, and otherwise
maintained and protected until provisional acceptance. Settled plants shall be
reset to proper grade and position, planting saucer restored, and dead material
removed. Guys shall be tightened and repaired. Defective work shall be
corrected as soon as possible after it becomes apparent and as weather and
season permit.
B. Upon completion of planting and prior to provisional acceptance, remove from
the site excess soil and debris and repair all damage resulting from planting
operations.
0 3.12. INSPECTION AND PROVISIONAL ACCEPTANCE
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A. The Engineer will inspect all work for provisional acceptance, at the end of the 8-
week maintenance period, upon the written request of the Contractor received at
least 10 days before the anticipated date of inspection.
B. Furnish full and complete written instructions for maintenance of the planting to
the Engineer at the time of provisional acceptance.
C. After all necessary corrective work has been completed and maintenance
instructions have been received by the Engineer will certify in writing the
provisional acceptance of the planting.
3.13. GUARANTEE PERIOD AND REPLACEMENTS
A. All plants, including relocated material, shall be guaranteed by the Contractor for
not less than I full year from the time of provisional acceptance.
B. At the end of this period, any plant that is missing, dead, not true to name or size
as specified, or not in satisfactory growth, as determined by the Engineer, shall
be replaced. In case of any question regarding the condition and satisfactory
establishment of a rejected plant, the Engineer's decision is final. The Contractor
will provide a guarantee for all replacement plants for at least one full growing
season.
C. All replacements shall be plants of the same kind and size as specified. They
shall be furnished and planted as specified herein. The cost of replacement shall
be borne by the Contractor except where it can be definitely shown that loss
resulted from vandalism.
D. Seeded areas shall be warranted for one growing season to be in a healthy,
vigorous growing condition. If, during the original warranty period, seeded areas
that die or are unhealthy due to natural causes, failure of germination, etc., or in
the opinion of the Engineer, shall be replaced at once and at the expense of the
Contractor.
3.14. FINAL INSPECTION AND FINAL ACCEPTANCE
A. At the end of the guarantee period, inspection will be made by the Engineer upon
written request submitted by the Contractor at least 10 days before the
anticipated date.
B. After all necessary corrective work has been completed, the Engineer will certify
in writing the final acceptance of the planting.
**END OF SECTION**
E
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Technical Specifications
SECTION 02933 - TOP SOILING AND SEEDING
1. GENERAL
1.1 SCOPE
The Contractor shall furnish all labor, equipment and material required to place
topsoil, seed, commercial fertilizer, agricultural limestone and mulch material,
including seedbed preparation, harrowing, compacting and other placement
operations on graded earthen areas as described herein or shown on the Drawings.
In general, seeding operations shall be conducted on all newly graded earthen areas
not covered by structures, pavement or sidewalks; all cleared or grubbed areas
which are to remain as finish grade surfaces; and on all existing turf areas which are
disturbed by construction operations and which are to remain as finish grade
surfaces. Areas disturbed by borrow activities shall also be seeded according to
these Specifications. The Work shall include temporary seeding operations to
stabilize earthen surfaces during construction or inclement weather and to minimize
stream siltation and erosion. Temporary seeding shall be performed at the times and
locations as directed by the Engineer.
1.2 QUALITY ASSURANCE
This specification section is prepared in accordance with The State of North Carolina
. Erosion and Sediment Control Planning and Design Manual Practice Standards and
Specifications 6.10 through 6.14.
1.3 SUBMITTALS
Submittals shall be made in accordance with Section 01300. In addition, the
following specific information shall be provided:
A. TOPSOIL:
Prior to topsoil operations, the Contractor shall obtain representative samples
and furnish soil test certificates including textural, pH, and organic ignition
analysis from a certified testing laboratory.
B. SEED:
Prior to seeding operations, the Contractor shall furnish to the Engineer labels or
certified laboratory reports from an accredited commercial seed laboratory or a
state seed laboratory showing the analysis and germination of the seed to be
furnished. Acceptance of the seed test reports shall not relieve the Contractor of
any responsibility or liability for furnishing seed meeting the requirements of this
Section.
1.4 DELIVERY, STORAGE, HANDLING
• A. FERTILIZER:
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Deliver fertilizer materials in original unopened containers showing weight,
analysis, and name of manufacturer. Store in a manner to prevent wetting and
deterioration. Container bags shall have the name and address of the
manufacturer, the brand name, net weight and chemical composition.
B. SEED:
Deliver seed material in original unopened containers showing weight, analysis,
and name of manufacturer. Store in a manner to prevent wetting and
deterioration.
2. PRODUCTS
2.1 ACCEPTABLE MANUFACTURERS
Wood-cellulose fiber mulch shall be manufactured by Weyerhauser Company,
Conway Corporation, or approved equal.
2.2 MATERIALS AND CONSTRUCTION
1. TOPSOIL:
Utilizing designated stockpiles or borrow areas on-site or off-site, the Contractor
shall place a minimum of 4-inches of topsoil over all graded earthen areas and
• over any other areas to be seeded. Sources of topsoil shall be approved by the
Engineer prior to disturbance.
Topsoil shall be a friable loam, silt loam, or sandy loam containing a large
amount of humus and shall be of original surface with good rich, uniform quality.
Topsoil shall be free from any material such as hard clods, stiff clay, hardpan,
partially disintegrated stone, pebbles larger than 1/2-inch in diameter, lime,
cement, bricks, ashes, cinders, slag, concrete, bitumen or its residue, boards,
stocks, chips or other undesirable material harmful or unnecessary to plant
growth.
Topsoil shall be reasonably free from perennial weeds and shall not contain
objectionable plant material, toxic amounts of either acid or alkaline elements or
vegetable debris undesirable or harmful to plant life.
Topsoil shall be natural topsoil without admixture of subsoil material, and shall be
classifiable as loam, silt loam, clay loam, sandy loam or a combination thereof.
The pH shall range from 5.5 to 7.0.
Topsoil shall contain not less than 5 percent nor more than 20 percent by weight
organic matter as determined by loss on ignition of oven-dried samples to 65
degrees C.
0 2. FERTILIZER AND LIMING MATERIALS:
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North Hills Drive Culvert Repair
Technical Specifications
Fertilizer and liming materials shall comply with applicable state, local and federal
laws concerned with their production and use.
Commercial fertilizer shall be a ready mixed material and shall be equivalent to
the grade or grades specified.
Fertilizer for seed shall be granular, non-burning product composed of not less
than 50% organic slow acting, guaranteed analysis professional fertilizer. Starter
fertilizer shall contain 10% nitrogen, 10% phosphoric acid, and 10% potash by
weight.
Agricultural limestone shall be pulverized limestone having a calcium carbonate
content of not less than 85 percent by weight.
3. SEED:
Seed shall consist of minimum of four species from the following list. Each
selected species shall represent between 20 to 30 percent of the total seed mix.
Carex stricta (Sedge)
Dactylis glomerata (Orchardgrass)
Panicum clandestinum (Deer tongue)
Panicum virgatum (Switchgrass)
Pennisetum glaucum (Brown Top or Pearl Millet)
Secale cereale (Winter Rye or Rye Grain)
Sorghum bicolor (Sudangrass)
• Seed shall be delivered in new bags or bags that are sound and labeled in
accordance with the U.S. Department of Agriculture Federal Seed Act.
All seed shall be from the last crop available at time of purchase and shall not be
moldy, wet or otherwise damaged in transit or storage. Species, rate of seeding,
and other requirements are shown on the Drawings.
Seed shall bear the growers analysis testing to 98 percent for purity and 90
percent for germination. At the discretion of the Engineer, samples of seed may
be taken for check against the grower's analysis.
4. MULCH MATERIALS:
All mulch materials shall be air-dried and reasonably free of noxious weeds and
weed seeds or other materials detrimental to plant growth. Mulch shall be
composed of wood cellulose fiber, straw or stalks, as specified herein. Mulch
shall be suitable for spreading with standard mulch blowing equipment. Straw
mulch shall be partially decomposed stalks of wheat, rye, oats or other approved
grain crops. Stalks shall be the partially decomposed, shredded residue of corn,
cane, sorghum or other approved standing field crops.
5. WATER:
Water shall be clean, clear water free from any objectionable or harmful chemical
qualities or organisms and shall be furnished by the Contractor.
34
North Hills Drive Culvert Repair
Technical Specifications
0 3. EXECUTION
3.1 SECURING AND PLACING TOPSOIL
Topsoil shall be secured from areas from which topsoil has not been previously
removed, either by erosion or mechanical methods. Topsoil shall not be removed to
a depth in excess of the depth approved by the Engineer.
The area or areas from which topsoil is secured shall possess such uniformity of soil
depth, color, texture, drainage and other characteristics as to offer assurance that,
when removed the product will be homogeneous in nature and will conform to the
requirements of these Specifications.
All areas from which topsoil is to be secured, shall be cleaned of all sticks, boards,
stone, lime, cement, ashes, cinders, slag, concrete, bitumen or its residue and any
other refuse which will hinder or prevent growth.
In securing topsoil from a designated pit, or elsewhere, should strata or seams of
material occur which do not come under the requirements for topsoil, such material
shall be removed from the topsoil or if required by the Engineer, the pit shall be
abandoned.
Before placing or depositing topsoil upon any areas, all improvement within the area
shall be completed, unless otherwise approved by the Engineer. The areas in which
. topsoil is to be placed or incorporated shall be prepared before securing topsoil for
use.
Before liming, fertilizing and seeding, the topsoil surfaces shall be trimmed and
worked to true line from unsightly variation, bumps, ridges and depressions and all
detrimental material, roots and stones larger than '/z - inch in any dimension shall be
removed from the soil.
If the prepared surface becomes eroded as a result of rain or for any other reason, or
becomes crusted before the seed is placed, the surface shall again be cultivated for
seeding.
Ground preparation operations shall be performed only when the ground is in a
tillable and workable condition, as determined by the Engineer.
3.2 SEEDBED PREPARATION
Limit preparation to areas which will be immediately seeded.
Loosen topsoil of lawn areas to minimum depth of 3 inches, if compacted. Remove
stones over 1/2 - inch in any dimension, sticks, roots, rubbish, and extraneous matter.
Apply limestone as required to adjust pH of topsoil to not less than 5.5 nor more than
7.0.
• Distribute evenly by machine and incorporate thoroughly into topsoil.
35
North Hills Drive Culvert Repair
Technical Specifications
M Apply fertilizer at the rate of 1.0 lb. of actual nitrogen per 1,000 sq. ft. (220 lbs./acre).
Apply fertilizer by mechanical rotary or drop distributor: thoroughly and evenly
incorporate into the soil to a depth of 3 inches by disking or other approved methods.
Fertilize areas inaccessible to power equipment with hand tools and incorporate into
soil.
Grade lawn areas to smooth, free-draining and even surface with a loose, uniformly
fine texture.
Restore prepared areas to specified condition if eroded, settled, or otherwise
disturbed after fine grading and prior to seeding.
Ground preparation operations shall be performed only when the ground is in a
tillable and workable condition, as determined by the Engineer.
3.3 FERTILIZATION AND LIMING
Following seedbed preparation, fertilizer shall be applied to all areas to be seeded so
as to achieve the application rates recommended in the soil test report. Fertilizer
shall be spread evenly over the seedbed and shall be lightly harrowed, raked, or
otherwise incorporated into the
soil for a depth of 3 inches.
• Agricultural limestone shall be thoroughly mixed into the soil according to the rates
recommended in the soil test report. The specified rate of limestone application may
be reduced by the Engineer if pH tests indicate this to be desirable. It is the
responsibility of the Contractor to obtain such tests and submit the results to the
Engineer for adjustment in rates.
It is the responsibility of the Contractor to make one application of a maintenance
fertilizer according to the recommendations listed in the soil test report.
3.4 SEEDING
Seed of the specified group shall be sown as soon as preparation of the seedbed
has been completed. No seed shall be sown during high winds, nor until the surface
is suitable for working and is in a proper condition. Seeding shall be performed
during the dates shown on the drawings unless otherwise approved by the Engineer.
Seed mixtures may be sown together provided they are kept in a thoroughly mixed
condition during the seeding operation.
Seed shall be uniformly sown by any approved mechanical method suitable for the
slope and size of the areas to be seeded, preferably with a broadcast type seeder,
windmill hand seeder or approved mechanical power drawn seed drills. Hydro-
seeding and hydro-mulching may be used on steep embankments, provided full
coverage is obtained. Care shall be taken to adjust the seeder for seedings at the
proper rate before seeding operations are started and to maintain their adjustment
• during seeding. Seed in hoppers shall be agitated to prevent segregation of the
various seeds in a seeding mixture.
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North Hills Drive Culvert Repair
Technical Specifications
• Immediately after sowing, the seeds shall be covered and compacted to a depth of
1/8 to 3/8-inch by a cultipacker or suitable roller.
3.5 MULCHING
All seeded areas shall be uniformly mulched in a continuous blanket immediately
after seeding. The mulch shall be applied so as to permit some sunlight to penetrate
and the air to circulate and, at the same time, shade the grounds, reduce erosion
and conserve soil moisture.
Approximately 25 percent of the ground shall be visible when mulch is applied under
specified erosion control blankets on steep slopes.
One of the following mulches shall be spread evenly over the seeded areas at the
following application rates:
Wood cellulose fiber 1,400 pounds per acre
Straw 2,000-4,000 pounds per acre
These rates may be adjusted at the discretion of the Engineer at no additional cost to
the Owner, depending on the texture and condition of the mulch material and the
characteristics of the seeded area.
• The Contractor shall cover structures, poles, fence and appurtenances if the mulch
binder is applied in such a way that it would come in contact with or discolor the
structures. Mulch and binder shall be applied by suitable blowing equipment at
closely controlled application rates in a manner acceptable to the Engineer.
3.6 WATERING
The Contractor shall be responsible for maintaining the proper moisture content of
the soil to insure adequate plant growth until a satisfactory stand is obtained. If
necessary, watering shall be performed to maintain an adequate water content in the
soil.
Watering shall be accomplished by hoses, tank truck or sprinklers in such a way to
prevent erosion, excessive runoff and overwatered spots.
Seeded areas shall be watered lightly and frequently to prevent the surface from
drying.
As young seedlings develop, reduce the frequency of watering and increase the
amount of water applied per watering to permit development of a deep root system.
3.7 MAINTENANCE
Upon completion of seeding operations, the Contractor shall clear the area of all
equipment, debris and excess material and the premises shall be left in a neat and
• orderly condition.
37
North Hills Drive Culvert Repair
Technical Specifications
The Contractor shall maintain all seeded areas without additional payment until final
acceptance of the work by the Owner, and any regrading, refertilizing, reliming
reseeding or remulching shall be done at Contractor's own expense. Seeding work
shall be repeated on defective areas until a satisfactory uniform stand of 90-95% is
accomplished.
Damage resulting from erosion, gulleys, washouts or other causes shall be repaired
by filling with topsoil, compacting and repeating the seeding work at the Contractor's
expense.
Contractor's guarantee of 1 year shall also cover a fully rooted stand of grass.
**END OF SECTION*'k
•

38
Page 1 of 2
Steve Sands
• From: Stanley, Chris [[e-mail]]
Sent: Friday, June 17, 2011 8:12 AM
To: Steve Sands
Subject: FW: North Hills Drive Culvert (UNCLASSIFIED)
Steve - let me know when you send this & I will follow up with Jamie.
Thanks,
Chris Stanley, PE
Project Engineer II
City of Raleigh Stormwater Utility
919-996-4003
From: Shern, James F SAW [mailto:[e-mail]]
Sent: Wednesday, June 01, 20119:36 AM
To: Stanley, Chris
Cc: Steve Sands
Subject: RE: North Hills Drive Culvert (UNCLASSIFIED)
Classification: UNCLASSIFIED
Caveats: NONE
• 1 will send you an email with the job number when I create a folder. That's how you will know I've seen
it. Follow up, after you've submitted, if you don't hear back from me in a week.
Jamie Shern
Raleigh Regulatory Field Office
Wilmington District
US Army Corps of Engineers
From: Stanley, Chris [mailto:[e-mail]]
Sent: Wednesday, May 25, 20112:51 PM
To: Shern, James F SAW
Cc: 'Steve Sands'
Subject: North Hills Drive Culvert
Jamie,
Hope you are doing well. Wanted to just touch base with you to let you know we will be submitting soon
for the 401/404 permitting for the N. Hills Drive culvert replacement project. It's been a while since we've
discussed this project but USI is in the short rows of preparing the final construction documents and the
permit application is almost ready to go. Just a heads up that it should be in front of you soon. If you
have any questions, do not hesitate to call me or Steve Sands with US Infrastructure (704-342-3007).
Thanks much
•
Chris Stanley, PE, CFM
6/22/2011
Page 2 of 2
Project Engineer II
City of Raleigh Stormwater Utility
is 222 West Hargett Street
PO Box 590 Room 301
Raleigh, NC 27602-0590
Phone: [phone]
Direct: [phone]
Fax: [phone]
Email: chris.stanley(@raleighnc.gov
www.raleighnc.gov
Classification: UNCLASSIFIED
Caveats: NONE
•
0
6/22/2011