20171572 Ver 1_401 Application_20171207

T.E. ALLEN ENGINEERING, P.C.
D Post office Box 2@20
wrg Rosman, North Carolina 28772 PAID
f 0 e [phone] Firm # C-1997 Mobile [phone]
i'U 0 7 2017
November 20, 2017
`f2
SUBJECT: Pre -Construction Notification (PCN) Application Form for 401/404 Permits
Repair & Replace Existing Seawall at David G & Frances D Ellison Residence, 3432
West Club Blvd., Lake Toxaway, Transylvania County, North Carolina, PIN 8522-06-
8685-000
NC DWQ, 401/Wetlands Unit
1650 Mail Service Center
Raleigh, NC 27699-1650
Dear DWQ:
Enclosed, please find five (5) copies of the 401/404 application (PCN form). A check
for the application review fee is also enclosed. This PCN to address the maintenance,
repair & replacement of an existing seawall David & Frances Ellison Residence, 3432
West Club Blvd., Lake Toxaway, Transylvania County, North Carolina. This work is for
maintenance, repair and/or replacement of a currently serviceable structure (seawall).
The work shall be in accordance with attached Sheets C-1 through C-5. Lake Toxaway
has a water quality classification of B; Tr.
All disturbed areas not to be filled or flooded will be vegetated pursuant to the
seeding schedule in the Erosion and Sediment Control Planning and Design Manual. If
you have any questions or require any additional information, please do not hesitate to
contact me at [phone] or email [e-mail].
Sincerely,
.I '-� d�'
Te . Allen, P.E.
Consulting Engineer
Enclosures 5 copies of 401/404 PCN Application Form
Check for application review fee

V
Copy Furnish w/ attachment:
401 PERMITTING
Zan Price, P.E.
NCDEQ — Division of Water Resources
2090 U.S. Hwy. 70
Swannanoa, NC 28711
828-296-4500
NC FISH & WILDLIFE PERMITTING (Temporary Address, until end of 2017)
Andrea Leslie
Mountain Habitat Conservation Coordinator
NC Wildlife Resources Commission
645 Fish Hatchery Rd.
Marion, NC 28752
828-400-4223
andrea.leslie a,ncwildlife.org
USACE 404 PERMITTING
Mr. David Brown, PG
Asheville Regulatory Field Office
US Army Corps of Engineers
151 Patton Ave, Room 208
Asheville, NC 28801-5006

�� WATF9
D
U 7 2017 Office use Only:
Corps action ID no.
D -WA ER D E3 DWQ project no.
01 B FFER P RMITTI Form Version 1.3 Dec 10 2008
Page 1 of 13
PCN Form —Version 1.3 December 10, 2008 Version
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: 3 & 18 or General Permit (GP) number:
1 c.
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
1g.
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:
REPAIR & REPLACE EXISTING SEAWALL WALL at ELLISON RESIDENCE
2b.
County:
Transylvania
2c.
Nearest municipality / town:
Brevard
2d.
Subdivision name:
Lake Toxaway
2e.
NCDOT only, T.I.P. or state
project no:
3.
Owner Information
3a.
Name(s) on Recorded Deed:
David G & Frances D Ellison Co Trustees
3b.
Deed Book and Page No.
3c.
Responsible Party (for LLC if
applicable).-
pplicable):3d.
3d.
Street address:
BK D L8 -R WESTSHORE DR 2.01
3432 West Club Blvd.
3e.
City, state, zip:
Lake Toxaway, NC 28747
3f.
Telephone no.:
864-525-4662
3g.
Fax no.:
3h.
Email address:
Page 1 of 13
PCN Form —Version 1.3 December 10, 2008 Version

4.
Applicant Information (if different from owner)
4a.
Applicant is:
❑ Agent ❑ Other, specify:
4b.
Name:
4c.
Business name
(if applicable):
4d.
Street address:
4e.
City, state, zip:
4f.
Telephone no.:
4g.
Fax no.:
4h.
Email address:
5.
Agent/Consultant Information (if applicable)
5a.
Name:
Terry Allen, PE
5b.
Business name
(if applicable):
T.E. ALLEN ENGINEERING, PC
5c.
Street address:
P.O. Box 103
5d. City, state, zip:
Rosman, NC 28772
5e.
Telephone no.:
828-877-4883
5f.
Fax no.:
5g.
Email address:
[e-mail]
Page 2of13
PCN Form — Version 1.3 December 10, 2008 Version

B.
Project Information and Prior Project History
1.
Property Identification
1a.
Property identification no. (tax PIN or parcel ID):
PIN 8522-06-8685-000
1 b. Site coordinates (in decimal degrees):
Latitude: 35.132928 Longitude: - 82.94473
(DD.DDDDDD) (-DD.DDDDDD)
1 c.
Property size:
2.41 acres
2.
Surface Waters
2a.
Name of nearest body of water (stream, river, etc.) to
proposed project:
Lake Toxaway
2b.
Water Quality Classification of nearest receiving water:
B, Trout
2c.
River basin:
Savannah
Page 3 of 13
PCN Form —Version 1.3 December 10, 2008 Version

3.
Project Description
3a.
Describe the existing conditions on the site and the general land use in the vicinity of the project at the time of this
application:
This home site located in Toxaway Estates, a private residential development in western Transylvania County, NC. The
lot borders Lake Toxaway which has a classification of B: Trout. The general land use is residential. There is an existing
stone and mortar seawall along the shoreline. The existing seawall is deteriorated and required repair and/or
replacement.
3b.
List the total estimated acreage of all existing wetlands on the property:
none
3c.
List the total estimated linear feet of all existing streams (intermittent and perennial) on the property:
none
3d.
Explain the purpose of the proposed project:
Remove and replace approximately 275 +/- linear feet of existing Seawall. New Seawall to be in accordance with Sheet
C1 through C5. All work shall be performed "IN THE DRY" using a coffer dam to create a dry work area. Trbitidy
curtains to be used around work area to prevent turbidity.
Repair Existing Seawall (85 LF +/-) using like kind materials. Hand work only. Furnish and install Turbidity Curtains
around work area to maintain Water Quality. No disturbance within existing Vegetated Trout Buffer.
See attached Sheet C5 for location of work.
Page 4 of 13
PCN Form — Version 1.3 December 10, 2008 Version

3e.
Describe the overall project in detail, including the type of equipment to be used:
1.0 Remove and Replace approximately 275 +/- linear feet of existing Seawall. New Seawall to be in accordance with
Sheet C1 through C5. All work shall be performed "IN THE DRY" using a coffer dam to create a dry work area.
Permanent Toe Apron shall not exceed 25 cubic yards meeting the following requirements;
(a) The quantity of discharged material and the volume of area excavated do not exceed 25 cubic yards below the plane
of the ordinary high water mark or the high tide line;
(b) The discharge will not cause the loss of more than 1/10 -acre of waters of the United States; and
(c) The discharge is not placed for the purpose of a stream diversion.
2.0 Repair Existing Seawall (85 LF +/-) using like kind materials. Hand work only. No disturbance within existing
Vegetated Trout Buffer. Provide Turbidity Curtains around work area to maintian water quality.
See attached Sheet C5 for location of work.
To comply with Water Quality requirements, the Seawall Replacement work will be performed in the dry. This will be
accomplished by installing a temporary coffer dam around the proposed work area, or by scheduling the work during the
upcoming lake draw down. Where a coffer dam is used, the work area will be dewatered by pumping. All dewatering
discharge shall have a turbidity of not more than 10 NTUs above background or as otherwise specified in DWQ's
Turbidity Standards (15A NCAC 02B.0211(3.)(k.)). To satisfy the required turbidity limit, the dewatering pump discharge
shall be filtered through a Bag Filtration Unit equal to Model BF -400 from Rain -for -Rent with a 100 to 1 micron nominal
rating (P.O.C. at Rain -for -Rent is Jeremy at 704-393-3345). The turbidity level of all discharge shall be monitored with
calibrated turbidity meters and the filtration equipment shall be adjusted as necessary to insure compliance with Water
Quality Standards. The water around the dredging areas shall likewise be monitored with calibrated turbidity meters and
the turbidity curtains shall be adjusted as necessary to insure compliance with Water Quality Standards.
Uncured concrete shall not be allowed to come into direct contact with surface waters. This will be accomplished by
establishing a "dry work area" as described above. "High Early" cementious material shall be in the stone work to
minimize curing time.
Water Quality around the work areas shall be monitored with calibrated turbidity meters. The coffer dams and turbidity
curtains shall be adjusted as necessary to insure compliance with Water Quality Standards.
4.
Jurisdictional Determinations
4a.
Have jurisdictional wetland or stream determinations by the
Corps or State been requested or obtained for this property /
❑ Yes ® No ❑ Unknown
project (including all prior phases) in the past?
Comments:
4b.
If the Corps made the jurisdictional determination, what type
❑ Preliminary ❑ Final
of determination was made?
4c.
If yes, who delineated the jurisdictional areas?
Agency/Consultant Company:
Name (if known):
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
❑ Yes ® No ❑ Unknown
this project (including all prior phases) in the past?
5b.
If yes, explain in detail according to "help file" instructions.
Page 5 of 13
PCN Form — Version 1.3 December 10, 2008 Version

6. Future Project Plans
6a. Is this a phased project? ❑ Yes ® No
6b. If yes, explain.
Page 6 of 13
PCN Form — Version 1.3 December 10, 2008 Version

C. Proposed Impacts Inventory
1. Impacts Summary
1 a. Which sections were completed below for your project (check all that apply):
❑ Wetlands ❑ Streams - tributaries ❑ Buffers
® Open Waters ❑ Pond Construction
2. Wetland Impacts
If there are wetland impacts proposed on the site, then complete this question for each wetland area impacted.
2a.
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
❑ No
❑ Corps
❑ DWQ
W3 ❑ P ❑ T
❑ Yes
❑ No
❑ Corps
❑ DWQ
W4 ❑ P ❑ T
❑ Yes
❑ No
❑ Corps
❑ DWQ
W5 ❑ P ❑ T
❑ Yes
❑ No
❑ Corps
❑ DWQ
❑ Yes
❑ Corps
W6 ❑ P ❑ T
❑ 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)
❑ PER
❑ Corps
S1 ❑ P ❑ T
❑ INT
❑ DWQ
❑ PER
❑ Corps
S2 ❑ P ❑ T
❑ INT
❑ DWQ
S3 ❑ P ❑ T
❑ PER
❑ INT
❑ Corps
❑ DWQ
S4 El ❑ T
❑ PER
❑ INT
❑Corps
❑ DWQ
S5 ❑ P ❑ T
❑ PER
❑ INT
❑ Corps
❑ DWQ
❑ PER
❑ Corps
S6 ❑ P ❑ T
❑ INT
❑ DWQ
3h. Total stream and tributary impacts
3i. Comments:
Page 7 of 13
PCN Form — Version 1.3 December 10, 2008 Version

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.
4b.
4c.
4d.
4e.
Open water
Name of waterbody
impact number —
(if applicable)
Type of impact
Waterbody type
Area of impact (acres)
Permanent (P) or
Temporary T
Temporary Coffer Dam to
01 ❑ P ®T
Lake Toxaway
Replace Existing Seawall, 275
Lake
0.04 Acres
Linear Ft (+/-)
02 ❑ P ®T
Lake ToxawayTemporary
Turbidity Curtain to
Lake
0.01 Acres
Repair Seawall, 85 Linear Ft (+/-)
03 ®P ❑ T
Lake Toxaway
Permanent Riprap Toe Apron,
Lake
0.05 Acres
275 Linear Ft
04 ❑P❑T
4f. Total open water impacts 1
0.10 Acres
4g. Comments:
1.0 SEAWALL REPLACEMENT WORK (275 LF +/-). Seawall work will be accomplished "in the dry" by installing a temporary
coffer dam around the proposed work area, or by scheduling work during the up coming lake draw down. The dewatering
discharge will be filtered to DWQ Water Quality Standards prior to release.
2.0 REPAIR EXISTING SEAWALL (85 LF +/-). Turbidity curtains will be used to isolate the work areas and curtains will
remain in place until the turbidity in the work area is less than 10 NTUs above background.
5. Pond or Lake Construction
If pond or lake construction proposed, then complete the chart below.
5a.
5b.
5c.
5d.
5e.
Wetland Impacts (acres)
Stream Impacts (feet)
Upland
Pond ID
Proposed use or purpose
(acres)
number
of pond
Flooded
Filled
Excavated
Flooded
Filled
Excavated
Flooded
P1
P2
5E 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 8of13
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 El Tar -Pamlico EJ Other:
Project is in which protected basin?
❑ Catawba ❑ Randleman
6b.
6c.
6d.
6e.
6f.
6g.
Buffer impact
number —
Reason
Buffer
Zone 1 impact
Zone 2 impact
Permanent (P) or
for
Stream name
mitigation
(square feet)
(square feet)
Temporary T
impact
61 ®P❑T
-required?
El Yes
❑ No
B2 ❑ P ❑ T
❑ Yes
❑ No
El Yes
B3 ❑P❑T
❑ No
6h. Total buffer impacts
6i. Comments:
D. Impact Justification and Mitigation
1. Avoidance and Minimization
1 a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project.
The work will be performed while the lake is at normal pool elevation.
1.0 SEAWALL REPLACEMENT WORK (275 LF +/-). Seawall work will be accomplished "in the dry" by installing a temporary
coffer dam around the proposed work area, or by scheduling work during the up coming lake draw down. The dewatering
discharge will be filtered to DWQ Water Quality Standards prior to release.
2.0 REPAIR EXISTING SEAWALL (85 LF +/-). Turbidity curtains will be used to isolate the work areas and curtains will
remain in place until the turbidity in the work area is less than 10 NTUs above background.
1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
To minimize disturbance during construction, the work will be accomplished with the smallest mechanical equipment
practicable.
2. Compensatory Mitigation for Impacts to Waters of the U.S. or Waters of the State
2a. Does the project require Compensatory Mitigation for
❑ Yes ® No
impacts to Waters of the U.S. or Waters of the State?
2b. If yes, mitigation is required by (check all that apply):
❑ DWQ ❑ Corps
❑ Mitigation bank
2c. If yes, which mitigation option will be used for this
❑ Payment to in -lieu fee program
project?
❑ Permittee Responsible Mitigation
3. Complete if Using a Mitigation Bank
3a. Name of Mitigation Bank:
3b. Credits Purchased (attach receipt and letter)
Type
Quantity
Page 9 of 13
PCN Form — Version 1.3 December 10, 2008 Version

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:
6g. If buffer mitigation is required, discuss what type of mitigation is proposed (e.g., payment to private mitigation bank,
permittee responsible riparian buffer restoration, payment into an approved in-lieu fee fund).
6h. Comments: Should project exceed 10% or 1 00'in 1000', a trout buffer waiver will be sought from NCDENR - Div of Land
Resources
Page 10 of 13
PCN Form — Version 1.3 December 10, 2008 Version

E.
Stormwater Management and Diffuse Flow Plan (required by DWQ)
1.
Diffuse Flow Plan
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:
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?
❑ Phase II
3b.
Which of the following locally -implemented stormwater management programs
❑ NSW
❑ 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
1:1 Yes El No
attached?
5.
DWQ 401 Unit Stormwater Review
5a.
Does the Stormwater Management Plan meet the appropriate requirements?
❑ Yes ❑ No
5b.
Have all of the 401 Unit submittal requirements been met?
❑ Yes ❑ No
Page 11 of 13
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.
N.A.
Page 12 of 13
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
habitat?
❑ Yes ® No
5b.
Have you checked with the USFWS concerning Endangered Species Act
impacts?
❑ Yes ® No
5c.
If yes, indicate the USFWS Field Office you have contacted.
❑ Raleigh
❑ Asheville
5d.
What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical
Habitat?
6.
Essential Fish Habitat (Corps Requirement)
6a.
Will this project occur in or near an area designated as essential fish habitat?
❑ Yes ® No
6b.
What data sources did you use to determine whether your site would impact Essential Fish Habitat?
7.
Historic or Prehistoric Cultural Resources (Corps Requirement)
7a.
Will this project occur in or near an area that the state, federal or tribal
governments have designated as having historic or cultural preservation
status (e.g., National Historic Trust designation or properties significant in
North Carolina history and archaeology)?
❑ Yes ® No
7b.
What data sources did you use to determine whether your site would impact historic or archeological resources?
8.
Flood Zone Designation (Corps Requirement)
8a.
Will this project occur in a FEMA -designated 100 -year floodplain?
❑ Yes ❑ No
8b.
If yes, explain how project meets FEMA requirements:
8c. What source(s) did you use to make the floodplain determination?
David G. & Frances D. Ellison
Co Trustees
Applicant/Agent's Printed Name
Date
Applicant/Agent's Signature
(Agent's signature is valid only if an authorization letter from the applicant
is provided.)
Page 13 of 13
PCN Form — Version 1.3 December 10, 2008 Version

THIS ENGINEERED DETAIL
SHALL BE USED FOR THE
RETAINING—SEAWALL AT
THE ELLISON RESIDENCE
ONLY. THIS DETAIL IS
NOT APPLICABLE FOR ANY
OTHER SITE.
GENERAL NOTES:
David G & Frances D BEon Residence
3432 MES CLUB B D LMO, LAKE TOKAWAY, TRANS LVAHM COUHUY, WORTH CAROLMA
1.0 All work shall be in accordance with North Carolina State
Residential Building Code, OSHA Safety and Health Requirements, US
Army Corps of Engineers 404 permit requirements, NCDENR Division of
Water Quality 401 permit requirements, NC Sedimentation Pollution
Control Act, and all other applicable codes, ordinances, and
regulations, Lake Toxaway Community Association Requirements, and
all other applicable codes, ordinances and requirements. The
Contractor shall coordinate all work with the Lake Toxaway Operations
Manager at the IPM Lake Toxaway Office.
2.0 Contractor shall verify and establish all Elevations prior to
beginning work. Contractor shall obtain all required permits prior to
beginning work. Contractor shall locate all property boundaries prior
to beginning work. Contractor shall locate, flag and protect all
underground utilities prior to beginning work. Do not locate any part
of the work within any right—of—way, set back, encroachment,
easement, trout stream buffer zone (or other buffer zone or set
back), unless permitted to do so. Do not allow fresh concrete to
contact lake waters.
3.0 No part of the new work shall extend the property line or
beyond the shoreline into the waters of Lake Toxaway.
3.1 The New Seawall shall be placed in the same footprint, location
and alignment as the existing Seawall.
3.3 A 'DRY WORK AREA" is required for the performance of this
work. See Paragraph entitled 'DRY WORK AREA".
4.0 As a result of the engineering design, a number of observations,
conclusions and recommendations are provided. It should be noted
that the observations, conclusions and recommendations stated herein
are based on information available as of this writing. It is
conceivable that additional information may be forthcoming which
bears on these observations, conclusions and recommendations. The
right is reserved, therefore, to review and modify all observations,
conclusions, and recommendations at any future point in time should,
in fact, additional information become available. The comments,
recommendations, and opinions provided below are applicable only to
the specific site features evaluated during our inspection.
4.1 All other features of work that may be required, but not shown
herein, shall be designed by others. No geotechnical investigation
was performed. By accepting this report, you and any others to
whom it is distributed, agree to a strict limitation of liability for
Terry E. Allen PE, T.E. ALLEN ENGINEERING, P.C., and its employees to
an amount not to exceed the fee paid in hand.
5.0 TROUT STREAM BUFFER REQUIREMENTS — No land disturbing
activity during periods of construction or improvements to land shall
be permitted in proximity to a lake or natural watercourse unless a
buffer zone is provided along the margin of the watercourse of
sufficient width to confine visible siltation within the twenty—five
percent (25%) of the buffer zone nearest the land disturbing
activity. Waters that have been classified as trout waters by the
Environmental Management Commission shall have on undisturbed
buffer zone 25 feet wide or of sufficient width to confine visible
siltation within the twenty—five percent (25%) of the buffer zone
nearest the land disturbing activity, whichever is greater. Provided,
however, that the Sedimentation Control Authority may approve plans
which include land disturbing activity along trout waters when the
duration of said disturbance would be temporary and the extent of
said disturbance would be minimal. All tributaries to trout streams
(named and unnamed) take on the trout classification, unless the
tributaries have another specified water quality classification.
5.1 The 25 foot trout buffer zone shall be measured from the top of
bank.
5.2 The disturbance is temporary and minimal when the disturbance
is limited to a maximum of 10% of the buffer zone within the tract
such that no more than 100 linear feet of disturbance occurs in
every 1000 feet of buffer zone. These disturbances can be approved
by the NCDENR Land Quality Regional Office staff on an Erosion
Control Plan and no variance is needed. Most of these types of
disturbances are for such activities such as bridge construction,
culvert installation, and installation of sewer and utility lines
perpendicular to the trout stream.
5.3 Longer lengths of the buffer zone may be disturbed with the
approval of the NCDENR Division of Land Resources Director.
6.0 TROUT BUFFER WAIVER. If during the course of the work it is
determined that more that 10% of the trout buffer may be disturbed,
the Contractor shall prepare and submit a Variance request pursuant
to 15A NCAC 04B.0125. This variance shall be made to the NCDEQ
Division of Land Resources.
PRELIMINARY
DO NOT
© Copyright 2017 Terry Allen PE, T.E. ALLEN ENGINEERING USE FOR
PC, Terry E. Allen Engineer. All Rights Reserved Worldwide. CONSTRUCTION
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7.0 LAKE TOXAWAY WATER QUALITY CLASSIFICATION. Lake Toxaway
11.0 DOCK PILINGS INSTALLED IN WATER — Pilings may be placed by
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is classified B; Trout. The turbidity standard of 10 NTUs
auger, jetting or drop hammer. Pilings shall receive a final set by
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(Nephelometric Turbidity Units) shall not be exceeded as described in
drop hammer or other approved method, acceptable to the Building
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Title 15A NCAC 026 .0211 (21). If turbidityexceeds this level due to
Inspector to ensure compaction of material at end bearing. The
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tip—elevation for all pilings shall be field determined during
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natural background conditions,) the existinturbidity level shall not be
installation. All pilings shall bear on satisfactory insitu material
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increased. [15A NCAC 026 .0211 (21)].
having a minimum bearing capacity of 3000 PSF. The minimum
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embedment depth shall not be less than 6—Feet. The actual
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embedment depth shall be as required to insure pilings bear on
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8.0 TURBIDITY CONTROL. The turbidity standard for Trout Waters is
satisfactory insitu material having a minimum bearing capacity of
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10 NTUs (Nephelometric Turbidity Units) shall not be exceeded as 3000 PSF. All building materials shall be suitable of exterior use.
described in Title 15A NCAC 028 .0211 (21). If turbidity exceeds this
All Pilings for the Boat Dock that are to be located in—water shall be
a
A
level due to natural background conditions, the existing turbidity level
pressure treated for fresh water immersion.
shall not be increased. [15A NCAC 02B .0211 (21)]
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12.0 FOOTERS. All footers and slabs shall bear on satisfactory
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8.1 The Contractor shall not violated water quality stream standards
insitu material having a minimum bearing capacity of 2000 psf. No
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during the performance of this work. The Turbidity Level in the lake
portions of the foundation shall bear of fill dirt or fill soil.
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waters shall not exceed 10 NTUs at any time during performance of
Contractor shall verify that the site has stable geotechnical
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this work pursuant to 15A NCAC 028.0211 (3)(k). The Contractor shall
conditions. Top of footings shall be located below the frost line.
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employ any and all methods necessary to prevent a violation of the
Footings shall be stepped where it is necessary to change the
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Turbidity Standards. These measures include, but are not limited to;
elevation of the top surface of the footings or where the slope of
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turbidity curtains around the work, haybails, silt fence, stone check
the bottom surface of the footings will exceed 0.1 unit vertical in ten
a
dams, etc. Where turbidity curtain are necessary, curtains shall
units horizontal (1% slope).
remain in place until the turbidity in the work areas return to original
4i
background levels.
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12.1 Where suspect foundation conditions are encountered, additional
over excavation may be required. This work may include:
9.0 HABITAT CONSERVATION. Shallow water bottom and complex
a. Dewater excavation.
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shoreline structure, most notably fallen trees and other large woody
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debris (LWD), are important spawning and foraging habitats for
b. Excavate suspect subgrade down to satisfactory insitu material00
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various sunfish, largemouth bass, and other fishes in the lake. They
having a minimum bearing capacity of 2000 PSF.
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are also used by many reptiles and birds for perching, basking, and
c. Line excavation with a geotechnical fabric equal to Mirofi 500X.
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foraging areas. These areas shall be preserved to the largest extent
Such habitat be in it
d. Backfill excavation to the desired subgrode elevation with #57
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possible. shall only removed areas where
clean stone.
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creates a hazard to watercraft navigation and only to the controlling
depth in the
Provide 6 mil poly between stone and concrete.
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navigation channels.
f. Construct foundation in accordance with the foundation
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10.0 DRY WORK AREA. All work shall be performed "IN—THE—DRY"
plan
designed by others.
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This will be accomplished by installing a temporary coffer dam around
12.2 CONCRETE FOOTERS. Where concrete footers are specified,
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the proposed work area, or by scheduling the work during a lake draw
4000 PSI
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down. Where a coffer dam is used, the work area will be dewatered
concrete shall have a min 28—day compressive strength of
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b pumping. All dewatering discharge shall have a turbidity of not
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and shall have 4-7% entrained air. A reinforcing steel shall be
All la be 48 bar
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more than 10 NTUs above background or as otherwise specified in
epoxy coated Grade 60. rebor slices shall
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DWQ's Turbidity Standards (15A NCAC 02B.0211(3.)(k.)). To satisfy
diameters unless specified otherwise.
the required turbidity limit, the dewatering pump discharge shall be
filtered through a Bag Filtration Unit equal to Model BF -400 from
12.3 UNCURED CONCRETE. Uncured concrete shall not be allowed to
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Rain—for—Rent with a 100 to 1 micron nominal rating. The turbidity
come into direct contact with surface waters. This will be
a
level of all discharge shall be monitored with calibrated turbidity
accomplished by establishing a "dry work area" as described above.
meters and the filtration equipment shall be adjusted as necessary to
'High Early" cementious material shall be in the stone work to
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insure compliance with Water Quality Standards. The water around minimize curing time.
the work areas shall likewise be monitored with calibrated turbidity
NOW
Hwe:ane s.d.:
meters and the turbidity curtains shall be installed in addition to the
coffer dam as needed to insure compliance with Water Quality
NONE
W DOW.
Standards.
PRELIMINARY
DO NOT
© Copyright 2017 Terry Allen PE, T.E. ALLEN ENGINEERING USE FORC-2
"
PC, Terry E. Allen Engineer. All Rights Reserved Worldwide. CONSTRUCTION
SHEETT 2 of 5

13.0 The Contractor shall exercise care to preserve the natural
landscape and waterways and shall conduct the work so as to
prevent any unnecessary destruction, scaring, or defacing of the
natural surroundings in the vicinity of the work. All unnecessary
destruction, scarring, damage or defacing of the natural landscape
shall be corrected at the contractors expense.
14.0 All construction materials and debris shall be removed from the
site upon completion of the project and the area shall be graded
such that all surfaces drain naturally, blend with the natural terrain,
and are left in a condition that facilitate sown ground covers and
natural revegetation.
15.0 The Contractors activities shall be performed by methods that
will prevent entrance, or accidental spillage, of solid matter,
contaminants, debris, or other pollutants and wastes into streams,
flowing or dry watercourses, lakes or underground water sources.
16.0 Runoff and discharge shall be monitored to insure that no
sediment is discharged to the downstream watercourse.
17.0 The Architectural features of the new work shall comply with the
latest edition of the Lake Toxaway Community Association
Architectural Review Standards. The existing property lines and the
Side Yard Setback shall be located, marked and flagged by a
Professional Land Surveyor prior to beginning work. Verify actual
setback requirement with the most current Lake Toxaway Community
Association Architectural Review Standards.
18.0 RIPARIAN AREA SEEDING. The Contractor shall provide silt
fence and other erosion control measures as necessary to prevent
off site sedimentation and increased turbidity in surface waters. Do
not allow sediment to enter surface waters. Restore all disturbed
trout buffer areas in accordance with the NC DENR Ecosystem
Enhancement Program Publication Guidelines for Riparian Buffer
Restoration, and in accordance with the Special Conditions of all
Permits. See Table 1.
TABLE 1
TROUT BUFFER — GRASS SCHEDULE
August 1 — June 1
20 # Kentucky Bluegrass
75 # Hard Fescue
25 # Rye Grain
500 # Fertilizer
4000 # Limestone
May 1 — September 1
20 # Kentucky Bluegrass
75 # Hard Fescue
10 # German or Browntop
500 # Fertilizer
4000 # Limestone
Millet
19.0 US ARMY CORPS OF ENGINEERS (USACE) 404 PERMITTING.
19.1 On March 19, 2017, the regional conditions of Nationwide Permit
(NWP) 3 and 18 pertaining to notification requirements changed.
These changes affect the requirements for submittal of
pre—construction notification (PCN form) for work conducted in the
western counties of North Carolina. Based upon the site specific
Scope—of—Work for this project, a 404 PCN may not be required
provided all work is accomplished in accordance with all the
conditions of the NWP 3 and 18. This statement does not preclude
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the need to obtain other applicable federal, state, or local
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authorizations for the project. The changes to NWP 3 and 18 may
authorizations
not affect the pre—construction notification requirements to receive
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the required corresponding Clean Water Act Section 401 Water Quality
Certification from North Carolina Division of Water Resources (DWR).
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19.2 SEAWALL REPAIR AND/OR REPLACEMENT UNDER NWP 3 for
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PREVIOUSLYAUTHORIZED STRUCTURES.
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Maintenance. (a) The repair, rehabilitation, or replacement of any
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previously authorized, currently serviceable structure or fill, or of any
currently serviceable structure or fill authorized by 33 CFR 330.3,
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provided that the structure or fill is not to be put to uses differing
from those uses specified or contemplated for it in the original permit
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or the most recently authorized modification. Minor deviations in the
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structure's configuration or filled area, including those due to changes in
materials, construction techniques, requirements of other regulatory
agencies, or current construction codes or safety standards that are
necessary to make the repair, rehabilitation, or replacement are
authorized. This NWP also authorizes the removal of previously authorized
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structures or fills. Any stream channel modification is limited to the
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minimum necessary for the repair, rehabilitation, or replacement of the
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structure or fill; such modifications, including the removal of material
immediately to the
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from the stream channel, must be adjacent project.
the
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This NWP also authorizes removal of accumulated sediment and
in the immediate the fill. This
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debris within, and vicinity of, structure or
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NWP also authorizes the repair, rehabilitation, or replacement of those
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structures or fills destroyed or damaged by storms, floods, fire or other
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discrete events, provided the repair, rehabilitation, or replacement is
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commenced, or is under contract to commence, within two years of the
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date of their destruction or damage. In cases of catastrophic events,
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such as hurricanes or tornadoes, this two—year limit may be waived by
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the district engineer, provided the permittee can demonstrate funding,Z
contract, or other similar delays.
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19.3 SEAWALL REPAIR AND/OR REPLACEMENT for EXISTING
STRUCTURES NOT PREVIOUSLY AUTHORIZED and for NEW SEAWALLS.
a
For new seawalls and existing seawalls not previously authorized,
.
comply with NWP 13 and 18.
tow
h. DOW.
PRELIMINARY 11-0&-20+7
DO NOT
© Copyright 2017 Terry Allen PE, T.E. ALLEN ENGINEERING USE FOR C-3
PC, Terry E. Allen Engineer. All Rights Reserved Worldwide. CONSTRUCTION SHEET 3OF 3

PIN: 8522-06-8919-000
/
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OWNERS: ELLISON DAVID
FRANCES D CO TRUSTEES
/ PIN: 8522-06-8685-OOC
/ Legal Address: BK D 1-8-
/ WESTSHORE DR 2.01
Calculated Acreage: 2.41
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1 Existing Vegetated Trout
1 Buffer (25 -Ft Wide), Do /
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PIN: 8522-06-9484-000
\ P�Q at
LAKE TOXAWAY
V
Normal Pool Elev.
(3010 +/—)
Remove and Replace existing
Seawall (275 LF +/-). New
Seawall to be in accordance
with Sheet C-4.
— Existing Stone Covered Patio
Dock
Existing Lake Access Area
Repair Existing Seawall
(85 LF +/-) using like
kind materials. Hand
work only. No
disturbance within existing
Vegetated Trout Buffer.
\ PARTIAL SITE PLAN — BOULDER SEAWALL REPAIR
� 1
\ \ NOT TO SCALE
\ \
\ \ ©Copyright 2017 Terry Allen PE, T.E. ALLEN ENGINEERING
PC, Terry E. Allen Engineer. All Rights Reserved Worldwide.
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PRELIMINARY X11 2017
DO NOT
USE FOR C-4
CONSTRUCTION SHEET 4 OF

1. All work shall be in accordance with the latest
edition of the NC State Residential Building Code
and all other applicable codes, ordinances and
requirements.
2. The Detail & Specifications shown herein are
for a Natural Boulder Retaining Wall.
3. Satisfactory material for fill or backfill behind
retaining walls and other structures shall be limited
to materials classified in ASTM D 2487 as GW, GP,
GM, GP—GM, GC, GP—GC, SW, SP, SM, SW—SM, SC,
SW, SC, SP—SM, SP—SC, CL, ML and CL—ML.
Satisfactory materials shall be placed in 6"
compacted lifts. Material shall be compacted to
95% of the maximum dry density. Classification of
backfill materials shall be determined in accordance
with ASTM D 2487 and the moisture—density
relations of soils shall be determined in accordance
with ASTM D 1557.
RIPRAP Toe Apron to
provide compensatory
habitat. NCDOT Class
2 Riprop.
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STONE FOUNDATION PAD. Provide-
3'x16"xContinuous stone foundation
pad consisting of #57 clean stone
wrapped in Mirafi 50OX geotextile
fabric or equal.
4. BOULDERS. Boulders shall be sound natural
granite. Maintain minimum boulder wall thickness
of 2—ft. All boulders used in retaining walls shall
be sound durable granite. Provide chinking stones
to reduce gaps between boulders to less than 1
inch. Securely stack boulders to ensure that
boulders have a positive angle of 5—degrees or
more with respect to the horizontal.
5. WALL BATTER. Wall batter shall be 0.25H:1V
or shallower.
6. HORIZONTAL SCOUR SHOULDER. Maintain
minimum 3 feet wide horizontal shoulder at toe of
wall to prevent scour and undercut.
7. EMBEDMENT DEPTH. Embed toe of wall a
minimum of 1—FT into undisturbed residuum.
8. FOUNDATION BEARING AREA. locate boulder
retaining wall foundation on undisturbed residuum
with a minimum bearing capacity of 2,000 PSF.
3' +/—
Retaining
Wall
See Note 2
employees to an amount not to exceed the
fee paid in hand.
Non—woven needle punched geotextile fabric.
Chimney Drain Behind Wall. Provide No. 57
clean stone wrapped in non—woven needle
punched geotextile fabric with a minimum
thickens of 1—foot.
Mirafi 50OX geotextile
fabric or equal.
Existing Undisturbed Residuum with minimum
bearing capacity of 2000 PSF. Do not bear
retaining wall on unsatisfactory of unstable
material.
SEA WALL DETAIL
NOT TO SCALE
PRELIMINARY
DO NOT
Q Copyright 2017 Terry Allen PE, T.E. ALLEN ENGINEERING USE FOR
PC, Terry E. Allen Engineer. All Rights Reserved Worldwide. CONSTRUCTION
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9. FINISH GRADE BEHIND WALL. Provide
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10. CHIMNEY DRAIN. Provide No. 57 clean
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stone wrapped in non—woven needle punched
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0to o�
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geotextile fabric with a minimum thickens of
2 °' a U
1—foot.
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12. BLANKET DRAIN. Provide No. 57 clean>
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—°_,0
stone wrapped in non—woven needle punched
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geotextile fabric with a minimum thickens of
1—foot.
Ud
13. STONE FOUNDATION PAD. Provide
C9
3'x18"xContinuous stone foundation pad
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consisting of #57 clean stone wrapped in
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Mirafi 50OX geotextile fabric or equal.
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14. This is a Conceptual Retaining Wall Detail.
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The location, alignment, and up slope
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embankments & retaining walls were designed
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by others. By accepting this Plan, you and
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any others to whom it is distributed, agree to
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a strict limitation of liability for Terry E. Allen
a
PE, T.E. ALLEN ENGINEERING, P.C., and its
Lj
employees to an amount not to exceed the
fee paid in hand.
Non—woven needle punched geotextile fabric.
Chimney Drain Behind Wall. Provide No. 57
clean stone wrapped in non—woven needle
punched geotextile fabric with a minimum
thickens of 1—foot.
Mirafi 50OX geotextile
fabric or equal.
Existing Undisturbed Residuum with minimum
bearing capacity of 2000 PSF. Do not bear
retaining wall on unsatisfactory of unstable
material.
SEA WALL DETAIL
NOT TO SCALE
PRELIMINARY
DO NOT
Q Copyright 2017 Terry Allen PE, T.E. ALLEN ENGINEERING USE FOR
PC, Terry E. Allen Engineer. All Rights Reserved Worldwide. CONSTRUCTION
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