20150912 Ver 1_401 Application_20150915

I . . •+-
T.E. ALLEN ENGINEERING, P.C.
Post Office Box 103
Rosman, North Carolina 28772
Phone [phone] Firm # C -1997 Mobile [phone]
August 25, 2015
SUBJECT: Pre - Construction Notification (PCN) Application Form for 401/404 Permits
for Boathouse Foundation Seawall & Incidental Dredging for David & Lisa Baker, Lot 54
North Club Blvd., Lake Toxaway Estates, Lake Toxaway, Transylvania County, NC
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 project is for improvements to the
existing precast concrete segmental block Seawall foundation to support a new Boathouse
w/ Boat Lift. The existing Seawall shall be brought into agreement with Detail 1 /C -3
and the applicable specifications & requirements on Sheets C -1, C -2, & C -3. The work
will also include incidental dredging to remove 100 +/- cubic yards of sediment within
the limits of the Boat Slip and approach channel. Dredge spoils to be disposed of in an
upland disposal pit with no stormwater outlet(s). All drainage to be contained within the
pit. Disposal pit shall be excavated and graded to contain all drainage and stormwater
within pit, with not discharge. Location and permitting (where required) of Dredge Spoil
disposal pit to be by others. 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 (828) 877 -4883 or email teallenen6 ,citcom.net..
Sincerely,
T E. Allen, P.E.
Consulting Engineer
Enclosures 5 copies of 401/404 PCN Application Form
Check for application review fee

O�OY W A rERQc
20150912
Office Use Oa01, U M _
Corps action 1154 o. t1,� .,��
DWQ project no. IUI !S l" 7 IS
Form Version 1.3 Dect 0 2008
n !�
nlr 1
Pre - Construction Notification (PCN) Form j `V " d L v !J
A. Applicant Information I DENR -WATER kESOURcr= �
1. Processing I " O' durrtK NtKMITTING�
1 a. Type(s) of approval sought from the
Corps: ® Section 404 Permit ❑ Section 10 Permit
1 b. Specify Nationwide Permit (NWP) number: 13 & 18 or General Permit (GP) number:
1 c. Has the NWP or GP number been verified by the Corps? I ® 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 For the record only for DWQ 401 For the record only for Corps Permit.
because written approval is not required? Certification:
❑ Yes ® No ❑ Yes ® No
1f. Is payment into a mitigation bank or in -lieu fee program proposed for mitigation ❑ Yes ® No
of impacts? If so, attach the acceptance letter from mitigation bank or it lieu
fee program.
1g.
Is the project located in any of NC's twenty coastal counties. If yes, answer 1h ❑ Yes ® No
below
I
1 h.
Is the project located within a NC DCM Area of Environmental Concern (AEC)? I El Yes ® No 11I
2.
Project Information
2a.
Name of project:
Boathouse Foundation & Incidental Dredging
2b.
County.
I Transylvania
2c.
Nearest municipality / town:
I 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 P. Baker & Wife Lisa C. Baker
3b.
Deed Book and Page No.
I Doc 702, Page 831
3c
Responsible Party (for LLC if
I
applicable):
3d.
Street address:
I Lot 54 - Block D of Lake Toxaway Company
3e.
City, state, zip:
I Lake Toxaway, NC 28747
3f.
Telephone no.:
1 404 - 847 -9668
3g.
Fax no.:
3h.
Email address:
I I
Page 1 of 12
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):
14d. Street address:
4e. City, state, zip:
4f. Telephone no.:
4g. Fax no.:
4h. Email address:
5. Agent/Consultant Information (if applicable)
5a. Name:
5b. Business name
(if applicable):
5c. Street address:
5d. City, state, zip:
5e. Telephone no.:
5f. Fax no..
5g. Email address:
Page 2 of 12
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 8512 -89- 0638 -000
1 b.
Site coordinates (in decimal degrees):
Latitude: 35.140652
(DD DDDDDD)
1 c.
Property size,
1-1.248 acres
2.
Surface Waters
2a.
Name of nearest body of water (stream, river, etc.) to
Lake Toxaway
proposed project:
2b.
Water Quality Classification of nearest receiving water:
B, Trout
2c.
River basin:
Savannah
Longitude: - 82.95440
(- DD.DDDDDD)
1
1
Page 3 of 12
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
precast concrete segmental block seawall along the shoreline. The 16'x26' boatslip is also existing.
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:
Improve the existing precast concrete segmental block within the boatslip area as required to meet building code
standards to support a boathouse and boat lift. Perform incidental dredging to remove accumulated sediment within the
limits of the boathouse and entrance channel. Estimated incidental dredging to remove approximately 100 cubic yards of
accumulated sediment. No dredging to be performed below the elevation of the natural lake bottom. Turbitidy curtains to
be used around work area to prevent turbidity.
3e Describe the overall project in detail, including the type of equipment to be used:
NEW WORK;
1. Improvements to the existing Precast Concrete Segmental Block Seawall Foundation to support new Boathouse w/
Boat Lift. The existing Seawall shall be brought into agreement with Detail 1/C -3 and the applicable specifications &
requirements on Sheets C -1, C -2, & C -3. Overall dimensions shall be determined by the Boathouse & Boat Lift Designer.
2. Perform incidental Dredging to remove 100 +/- cubic yards of sediment within limits of Boat Slip and approach
channel. Dredge spoils to be disposed of in an uplands disposal pit with no stormwater outlet(s). All drainage to be
contained within pit. Disposal Pit shall be excavated and graded to contain all drainage and stormwater within pit, with
not discharge. Location and permitting (where required) of Dredge Spoil disposal Pit to be by others. Work to be
performed using hand labor & small equipment.
To comply with Water Quality requirements, the boathouse foundation (seawall) 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.
Dredging to be performed in the wet with turbidity control measures (turbidity curtins), or in the dry during the up coming
lake draw down. Only minimual incidental fall back during dredging. Upland disposal site with no return water and no
loss of wetlands. The water around the dredging areas shall be monitored with calibrated turbidity meters. The turbidity
curtains shall be adjusted as necessary to insure compliance with Water Quality Standards.
Page 4 of 12
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? El Yes ®No Unknown
Comments:
4b. If the Corps made the jurisdictional determination, what type
of determination was made? Preliminary ❑ Final
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 1
5a. Have permits or certifications been requested or obtained for ❑ Yes ® No ❑ Unknown 1
this project (including all prior phases) in the past?
5b. If yes, explain in detail according to "help file" instructions.
6. Future Project Plans
6a. Is this a phased project?
6b. If yes, explain.
❑ Yes ® No
Page 5 of 12
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 F-1 P F-1 T El 71 El Corps
❑N ❑DWQ
2g. Total wetland impacts
0
❑ Yes
❑ Corps
W2 ❑ P ❑ T
❑ No
❑ DWQ
W3 ❑ P ❑ T
❑ Yes
❑ No
❑ Corps
❑ DWQ
❑ P ❑ T
❑ Yes
❑ Corps
W4 ❑ P FIT
❑ No
❑ DWQ
If there are perennial or intermittent stream impacts (including
❑ Yes
❑ Corps
W5 ❑ P ❑ T
❑ No
❑ DWQ
W6 ❑ P ❑ T
❑ Yes
❑ No
❑ Corps
❑ DWQ
2g. Total wetland impacts
❑ PER
❑ Corps
S1
2h. Comments:
❑ INT
❑ DWQ
S2
❑ P ❑ T
3. Stream Impacts
❑ Corps
❑ DWQ
❑ PER
If there are perennial or intermittent stream impacts (including
temporary impacts)
proposed on the site, then complete this
question for all stream sites impacted.
❑ DWQ
❑ PER
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)
Page 6 of 12
PCN Form — Version 1.3 December 10, 2008 Version
1
❑ PER
❑ Corps
S1
❑ P ❑ T
❑ INT
❑ DWQ
S2
❑ P ❑ T
❑ PER
❑ INT
❑ Corps
❑ DWQ
❑ PER
❑ Corps
S3
❑ P ❑ T
❑ INT
❑ DWQ
❑ PER
❑ Corps
S4
❑ P ❑ T
❑ INT
❑ DWQ
❑ PER
❑Corps
S5
❑ P ❑ T
❑ INT
❑ DWQ
❑ PER
❑ Corps
S6
❑ P ❑ T
❑ INT
❑ DWQ
3h.
Total stream and tributary impacts
3i.
Comments,
Page 6 of 12
PCN Form — Version 1.3 December 10, 2008 Version
1

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)
01 ❑ P ®T Lake Toxaway 100 CY of Dredging/ Sediment Lake 0.10 Acres
Removal
02 ❑P ❑T
03 ❑P ❑T
04 ❑P FIT
4L Total open water impacts 0.10 Acres
4g. Comments: Dredging work will be accomplished "in the wet" while the lake level is at normal pool elevation, or "int the dry"
during the up coming lake draw down. Dredging with small excavator with minimual incidental fall back. 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. Upland disposal site with have no return water and no wetlands will be impacted.
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.
5. Pond or Lake Construction
If pond or ake 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
5L Total
5g. Comments:
5h. Is a dam high hazard permit required?
❑ Yes
5i. Expected pond surface area (acres):
5j Size of pond watershed (acres):
5k. Method of construction,
❑ No If yes, permit ID no:
Page 7 of 12
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.
Project is in which protected basin?
6b.
Buffer impact
number —
Permanent (P) or
Temporary (T)
B1 ®P ❑T
B2 ❑P FIT
B3 ❑P ❑T
6c. 6d.
Reason
for
impact
❑ Neuse ❑ Tar - Pamlico ❑ Other.
❑ Catawba ❑ Randleman
6e
Buffer
Stream name mitigation
6i. Comments:
D. Impact Justification and Mitigation
required?
❑ Yes
❑ No
❑ Yes
❑ No
❑ Yes
❑ No
6h. Total buffer impacts
6f.
..
Zone 1 impact Zone 2 impact
(square feet) (square feet)
1. Avoidance and Minimization
1a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project.
Dredging work will be performed in- the -wet while the lake is at normal pool elevation. Turbidity curtains shall be used to
isolate the work area. The turbidity curtains shall not be removed until the after construction is complete and the turbidity level
within the work area is less that 10 NTUs above background. Dredging / sediment removal is minimum amount necessary to
insure usable & navigable waters in the cove areas.
The Seawall construction is the minimual necessary for bank stabilization. A dry work area will be created to comply with
Water Quality Standards.
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. Turbidity curtains will be used around the dredging areas. The upland disposal areas for the dredge spoils will
have no return water and there will be no wetlands impacted.
Seawall work will be accomplished "in the dry" by installing a temporary coffer dam around the proposed work area. The
dewatering discharge will be filtered to DWQ Water Quality Standards prior to release.
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)
2c. If yes, which mitigation option will be used for this
project?
3. Complete if Using a Mitigation Bank
3a. Name of Mitigation Bank:
3b. Credits Purchased (attach receipt and letter)
❑ DWQ ❑ Corps
❑ Mitigation bank
❑ Payment to in -lieu fee program
❑ Permittee Responsible Mitigation
Type
Quantity
Page 8 of 12
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 �1
4d. Buffer mitigation requested (DWQ only): square feet 1I
4e. Riparian wetland mitigation requested: acres I
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 ❑ Yes ❑ No
buffer mitigation?
6b. If yes, then identify the square feet of impact to each zone of the riparian buffer that requires mitigation. Calculate the
amount of mitigation required.
6c. 6d. 6e.
Zone Reason for impact Total impact Multiplier Required mitigation
(square feet) (square feet)
Zone 1
Zone 2
3 (2 for Catawba)
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 100' in 1000', a trout buffer waiver will besought from NCDENR - Div of Land
Resources
Page 9 of 12
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-
2e. Who will be responsible for the review of the Stormwater Management Plan?
3. Certified Local Government Stormwater Review
3a. In which local government's jurisdiction is this project?
3b. Which of the following locally - implemented stormwater management programs
apply (check all that apply):
3c. Has the approved Stormwater Management Plan with proof of approval been
attached?
4. DWQ Stormwater Program Review
4a. Which of the following state - implemented stormwater management programs apply
(check all that apply):
4b. Has the approved Stormwater Management Plan with proof of approval been
attached?
5. DWQ 401 Unit Stormwater Review
5a. Does the Stormwater Management Plan meet the appropriate requirements?
5b. Have all of the 401 Unit submittal requirements been met?
❑ Certified Local Government
❑ DWQ Stormwater Program
❑ DWQ 401 Unit
❑ Phase II
❑ NSW
❑ USMP
❑ Water Supply Watershed
❑ Other:
❑ Yes ❑ No
❑
Coastal counties
❑
HQW
❑
ORW
❑
Session Law 2006 -246
❑
Other:
❑ Yes ❑ No
❑ Yes ❑ No
❑ Yes ❑ No
Page 10 of 12
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
letter.) [_1 No
Comments:
2. Violations (DWQ Requirement)
2a. Is the site in violation of DWQ Wetland Rules (15A NCAC 2H .0500), Isolated
Wetland Rules (15A NCAC 2H .1300), DWQ Surface Water or Wetland Standards, ❑ Yes ® No
or Riparian Buffer Rules (15A NCAC 2B .0200)?
2b. Is this an after - the -fact permit application? ❑ Yes ® No
2c. If you answered "yes" to one or both of the above questions, provide an explanation of the violation(s):
3. Cumulative Impacts (DWQ Requirement)
3a. Will this project (based on past and reasonably anticipated future impacts) result in ❑ Yes ® 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 11 of 12
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 ! El Yes ® No
habitat?
5b. Have you checked with the USFWS concerning Endangered Species Act I ❑ 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?
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?
8. Flood Zone Designation (Corps Requirement)
8a. Will this project occur in a FEMA - designated 100 -year floodplain? I ❑ Yes ❑ No
8b. If yes, explain how project meets FEMA requirements:
8c. What source(s) did you use to make the floodplain deterrination?
David P. Baker
Applicant/Agent's Printed Name App icant/Agent's Signature Date
(Agent's signature Is valid only if an authorization letter from the applicant
is provided.)
Page 12 of 12
PCN Form — Version 1,3 December 10, 2008 Version

OMHOUDD FOUNDDMD o HUDEDD DINEDDDD
DAM o USA BAKER RE&DENCE
Lake 7mmaWq UmnsWNaffla CaWW9 HC
GENERAL NOTES:
1.0 Prior to beginning work, the Contractor shall obtain approval &
authorization from the Lake Toxaway Community Association. All work
shall be in accordance with OSHA Safety and Health Requirements, US
Army Corps of Engineers permit requirements, NCDENR Division of Water
Quality requirements, NCDWR requirements, NC Sedimentation Pollution
Control Act, and all other applicable codes, ordinances, and regulations.
The Contractor shall coordinate all work with the Lake Toxaway Operations
Manager, 16801 Rosman Hwy, Lake Toxaway, NC 28747.
1.1 SCOPE —OF —WORK. This work shall include structural improvements to
the existing precast concrete segmental block boat slip foundation and
incidental dredging within the limits of the existing boat slip and approach
channel.
1.1.1 The existing Seawall within the limits of this Boat Slip shall be
brought into agreement with Detail 1/C -3 and the applicable
specifications & requirements on Sheets C -1, C -2, & C -3. Overall
dimensions shall be determined by the Boathouse & Boat Lift Designer, ,
but my be increased to a maximum of 30 feet in overall length and 18
feet in overall width at the Owners option.
1.1.2 Dredging shall not be performed below the original lake bottom
elevation. The dredging work is to be performed "in— the —wet" while the
lake level is at normal pool elevation. Special turbidity control measures
are required to insure compliance with NCDENR Water Quality Standards.
A turbidity threshold of 10 NTUs above background shall not be exceeded.
Seawall construction shall be performed "in the dry ".
2.0 METHOD OF DREDGING. The dredging shall be performed by shore
based excavator (within reach of a "long— reach" track hoe) or by barge
mounted equipment. The dredging areas will be limited to the limits of
the existing boat slip and approach channel and shall not exceed 100
cubic yards. Excavated materials (dredge spoils) shall be placed in an
adjacent dump trucks for transport to a local spoil site for proper
disposal. Dump truck cargo beds shall be water tight, or shall be lined
with a water tight liner prior to transporting the dredge spoils to the
disposal site.
3.0 DREDGE SPOILS DISPOSAL SITE. All excavated sediment and dredge
spoils shall be disposed of at an approved disposal site. The Contractor
shall obtain an Erosion & Sedimention Control Permit from the NCDENR —
Division of Land Quality where the disturbed area of the disposal site
exceeds 1 —acre. The Disposal Site shall be an excavated Pit and shall be
excavated and graded to contain all drainage and stormwater within the
pit, with not discharge. Location and permitting (where required) of
Dredge Spoil disposal Pit to be by others. All drainage to be contained
within pit. Upland disposal area shall have no return water. Provide stone
construction entrance(s) at disposal site and at barge off —load location.
A local Erosion Control Permit may be required from Transylvania County
where the disturbed area of the disposal site 4,000 SF or more. See
additional requirements on Sheet C -2.
4.0 This work may require various permits including, but not limited to:
US Army Corps of Engineers Section 404 wetlands permit and NCDENR
Division of Water Quality Section 401 Water Quality Permit, Sedimentation
& Erosion Control Permit, and other permits deemed necessary by
authorities having jurisdiction over the projects.
5.0 The Contractor shall exercise care to preserve the natural landscape
and waterways and shall conduct the dredging operations 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 contractor's expense.
6.0 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.
7.0 The Contractor's 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.
8.0 Runoff and discharge shall be monitored to insure that no sediment
is discharged to the downstream watercourse.
9.0 TURBIDITY CONTROL. The Contractor shall not violated water quality
stream standards during the performance of this work. The Turbidity
Level in the lake waters shall not exceed 10 NTUs at any time during
performance of this work pursuant to 15A NCAC 02B.0211 (3)(k). The
Contractor shall employ any and all methods necessary to prevent a
violation of the Turbidity Standards. These measures include, but are not
limited to; turbidity curtains around the work area, hayboils, silt fence,
stone check dams, etc., to prevent a violation of the Turbidity Standards.
The turbidity curtain shall remain in place until the turbidity in the work
areas return to original background levels.
10.0 HABITAT CONSERVATION. Shallow water bottom and complex
shoreline structure, most notably fallen trees and other large woody
debris (LWD), are important spawning and foraging habitats for various
sunfish, largemouth bass, and other fishes in the lake. They are also
used by many reptiles and birds for perching, basking, and foraging areas
These areas shall be preserved to the largest extent possible. Such
habitat shall only be removed in areas where it creates a hazard to
watercraft navigation and only to the controlling depth in the navigation
channels.
CONDITION FOR USE OF THIS PLAN — The existing seawall was designed
by others. By accepting this plan, 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.
Preliminary — Not for Construction /
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SHUFT 1 01 3 /

CONDITION FOR USE OF THIS
PLAN — The existing seawall was
designed by others. By
accepting this plan, you and any
others to whom it is distributed,
agree to a strict limitation of
liability for Terry E. Allen PE, Q
T.E. ALLEN ENGINEERING, P.C.,
and its employees to L�
an amount not to e�
exceed the fee QtoP
paid in hand.
Existing Precast Concrete Segmental
Block Seawall, designed by others.
Existing Seawall to remain.
17
LAKE TOXAWAY
— Existing Precast
Concrete Segmental
Block Seawall,
designed by others.
Existing Seawall to
remain.
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LAKE TOXAWAY
SEED SPECIFICATIONS FOR THE 25 —FOOT BUFFER ZONE:
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1. Planting and Seeding in the 25 —foot buffer zone adjacent to trout
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waters shall be in accordance with the document entitled "Guidelines for
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Riparian Buffer Restoration ", N.C. Department of Environment and Natural
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Resources, Ecosystem Enhancement Program, October 2004.
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2. Grasses and woody vegetation in the buffer shall be native plant specs.
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For lawn areas, the blend of native varieties shall be Kentucky Bluegrass
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(Poa pratensis L. ssp. pratensis) and (Festuca rubra L. ssp. rubro).
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Red Fescue 52 Lb /Acre
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Kentucky Bluegrass 13 Lb /Acre
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3. All work shall be carried out by an approved spraying machine specially
used for this work. The Contractor shall submit to the Landscape
Architect for approval (prior to start of work) a certified statement as to
number of pounds of fertllizer,omounts and types of grass seed, and
processed fiber, per 100 gallons of water.
4. Soil Amendments. Follow recommendations of soil tests or apply 4,000
lb/acre ground agricultural limestone and 1,000 lb/acre 5 -10 -10 fertilizer.
5. Mulch. Apply 4,000 — 5000 lb/acre grain straw. Anchor mulch by
tacking with asphalt, roving, or netting. Netting is the preferred anchoring
method on steep slopes.
6. Maintenance. Do not mow crown vetch. Refertilize in the second year
unless growth is fully adequate. Reseed, fertilize, and mulch damaged
areas immediately.
7. Control of Grasses and Forbs. In the early stages of riparian buffer
establishment, competition for nutrients by adjacent grasses and forbs will
substantially inhibit seedling growth. Release from herbaceous competition
has been demonstrated as the most cost — effective method to accelerate
the growth of seedlings. The plan for buffer establishment shall incorporate
control of the herbaceous layer. Options for weed control include four to
six inches of well —aged hardwood mulch, weed control fabrics, or
pre— emergent herbicide. Typically, mowing to control weeds will be
impractical based on the random distribution of plantings. Weed control
should be continued for three years from the time of planting.
8. Areas of Concentrated Flow. During the establishment period, the
riparian buffer should be inspected for evidence of concentrated flow. If
concentrated flow has begun to form, a level spreader or other best
management practice should be installed to diffuse the flow before it
enters the restored riparian buffer.
Existing 16'x26' ( + / —) Boat Slip with Precast Concrete Segmental Block Seawall
designed by others.
NEW WORK;
1. Improvements to the existing Precast Concrete Segmental Block Seawall Foundation
to support new Boathouse w/ Boat Lift. The existing Seawall shall be brought into
agreement with Detail 1/C -3 and the applicable specifications & requirements on
Sheets C -1, C -2, & C -3. Overall dimensions shall be determined by the Boathouse
& Boat Lift Designer.
2. Perform incidental Dredging to remove 100 +/— cubic yards of sediment within
limits of Boat Slip and approach channel. Dredge spoils to be disposed of in an
uplands disposal pit with no stormwater outlet(s). All drainage to be contained within
pit. Disposal Pit shall be excavated and graded to contain all drainage and
stormwater within pit, with not discharge. Location and permitting (where required) of
Dredge Spoil disposal Pit to be by others.
1 SITE PLAN for BOATHOUSE FOUNDATION & INCIDENTAL DREDGING
C — 2 NOT TO SCALE
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I­ Dat•:
08- 25-2015
C -2
Preliminary — Not for Construction , 11 IFCT 2OF3

FA
Boathouse & Boat Lift Structure,
designed by others.
All anchorage and anchor bolts to
I I be specified by the Boathouse &
I I Boat Lift Designer.
I I
I I
I I
I I
I I Top Course to be continuous
I reinforced concrete grade beam,
I I 18 "x24 "xContinuous.
j 2 #5 Top Bars, continuous
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+ * • 4 #5 Bottom Bars, continuous
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4 #4 Stirrup Bars ® 24" O.C.
COURSE
4
* Verify freeboard and t Buttress required, but not
draft requirements with a shown for clarity
Owner. Add additional a�
courses as necessary to
accommodate specific I COURSE #8 epoxy coated vertical dowel bar
boat requirements. \ w/ 6" top hook, continuous through
} 3
.� o all segmental blocks below. Lower level
* i segmental blocks to be grouted solid
o w/ 4000 psi hydraulic cementious
U grout suitable for underwater
COURSE
application.
2
TOXAWAY BLOCK, Precast Reinforced
II— III — III — III — III —III III I% Concrete Segmental Retaining Wall Block,
-� I_1 =I I I =I =I -i (1-1 I F (18" High x 24" Wide x L)
COURSE
1
Wrap stone aggregate footer with Mirafi
i — 500X geotextile fabric or equal.
.K
I
Stone aggregate footer (or 6'
segmental block footer) See
Special Notes 7 & 7.1
1 BOAT HOUSE FOUNDATION DETAIL
NOT TO SCALE
SPECIAL NOTES
1. Contractor shall verify all dimensions,
block layout, block count, alignment &
configuration prior to beginning work or
ordering materials.
2. All work shall comply with the
requirements of the 401 / 404 Permits
and all other applicable requirements.
3. Do not allow fresh concrete to
contact Lake Waters.
4. Do not allow sediment to enter Lake
Waters.
5. Work shall be performed in such a
manner as to prevent an increase in
turbidity in the Lake Waters.
6. Contractor shall coordinate and
verify overall dimensions of Boathouse
foundation with the Boathouse & Boat
Lift Designer. Adjust Foundation to
accommodate new Boathouse & Boat
Lift.
7. Where suspect foundation conditions
are encountered, footers shall be
over- excavated (under cut) to depth
necessary to ensure blocks bear on
satisfactory insitu material. The over
excavation shall be lined with Mirafi 500X
geotextile fabric and filled with #57 clean
stone to the desired subgrade elevation.
7.1 In lieu of the stone foundation,
six (6) foot segmental blocks may be
used as a footer course at the
Contractors option. The 6' segmental
blocks shall be aligned such that they
provide 6 -foot wide continuous spread
footing.
8. The existing seawall was designed by
others. By accepting this plan, 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.
Preliminary - Not for Construction
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8. The existing seawall was designed by
others. By accepting this plan, 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.
Preliminary - Not for Construction
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I--- D.N.
OS -25 -2015
C -3
/ SHEET 3 0E3 /