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HomeMy WebLinkAbout20190565 Ver 1_401 Application_20190426. M T.E. ALLEN ENGINEERING, P PAID TERRY E. ALLEN, PE, MSE CONSULTING ENGINEER Post Office Box 103 Rosman, North Carolina 28772 Phone (828) 877-4883 Email: tealleneng@comporium.net Mobile (828) 553-3004 Firm # C-1997 20190565 April 15, 2019 SUBJECT: PCN Application for New Boathouse Foundation at Patrick R McCarter & Amy R McCarter Residence, 282 Windward Point, Lake Toxaway, Transylvania County, North Carolina, PIN: 8522-44-7165-000 C NC DWQ, 401/Wetlands Unit �� 1 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 removal of the existing seawall as necessary to install a new Boathouse Foundation at Patrick R McCarter & Amy R McCarter Residence, 282 Windward Point, Lake Toxaway, Transylvania County, North Carolina. Please note that the Boathouse is oriented such that the boat entry door is perpendicular to the shoreline (i.e., the Boathouse is rotated 90 -degrees from a front opening boathouse). This orientation was necessary due to the on-site septic setback. 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 (828) 877-4883 or email tealleneng@comporium.net. Sincerely, Terry E. Allen, PE, MSE Consulting Engineer Enclosures 5 copies of 401/404 PCN Application Form Check for application review fee 'o a Copy Furnish w/ attachment: 401 PERMITTING Kevin Mitchell NCDEQ — Division of Water Resources 2090 U.S. Hwy. 70 Swannanoa, NC 28711 828-296-4500 NC FISH & WILDLIFE PERMITTING Andrea Leslie Mountain Habitat Conservation Coordinator NC Wildlife Resources Commission 645 Fish Hatchery Rd., Bldg B Marion, NC 28752 828-400-4223 andrea.leslie@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 r Office Use Only: Corps action ID no. DWQ project no. Form Version 1.3 Dec 10 2008 Page 1 of 12 PCN Form —Version 1.3 December 10, 2008 Version Pre -Construction Notification PC Form A. Applicant Information 1. Processing 1 a. Type(s) of approval sought from the Corps: I ® Section 404 Permit ❑ Section 10 Permit 1 b. Specify Nationwide Permit (NWP) number: 18 - New Boathouse 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 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: NEW BOATHOUSE at McCARTER 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: Patrick R McCarter & Amy R McCarter Trustees 3b. Deed Book and Page No. Date: 09/2017 Book: 00816 Page: 0493 Plat Book: 15 Page: 207 3c. Responsible Party (for LLC if applicable): 3d. Street address: B F L043 WINDWOOD PT .62 (282 Windward Point) 3e. City, state, zip: Lake Toxaway, NC 28747 3f. Telephone no.: 828-606-7931, Bob Dylewski - Bronco Construction Inc 3g. Fax no.: 3h. Email address: 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): 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: tealleneng@comporium.net 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): 8522-44-7165-000 1 b. Site coordinates (in decimal degrees): Latitude: 35.12673 Longitude: - 82.93113 (DD.DDDDDD) (-DD.DDDDDD) 1c. Property size: 1.00 LT (from Transylvania County GIS) 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: I Savannah Page 3 of 12 PCN Form — Version 1.3 December 10, 2008 Version & 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. 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: Construct new 16'x24' Boathouse Foundation & Retaining Wall Structure meeting side yard setback rules.. All work to be in accordance with the engineered plans. The boathouse foundation work will be performed "IN THE DRY" using a coffer dam to create a dry work area. Minimual disturbance within existing Vegetated Trout Buffer. See attached drawings. 3e. Describe the overall project in detail, including the type of equipment to be used: BOATHOUSE FOUNDATION. The Boathouse Foundation will be precast concrete segmental block equal to Toxaway block. To ensure compliance with Water Quality requirements, the work shall be performed "IN THE DRY" using a coffer dam to create a dry work area. In addition to the coffer dam, a minimum of two (2) turbidity curtains shall be used around the outside (wet side) of the coffer dam. The work area isolated by the coffer dam may 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 dewatering flow from the flirtation bag shall be discharged in front of (on the work side of) the two (2) turbidity curtains for additional filtration. 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 work 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. TURBIDITY CURTAINS. In addition to the Coffer Dam, a minimum of two (2) rows of Turbidity Curtains shall be installed and maintained around the work area. 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. Furnish and install multiple layers of turbidity curtains as necessary to insure regulatory compliance. Minimal disturbance within existing Vegetated Trout Buffer. 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. 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? Comments: ❑ Yes ® No ❑ Unknown 4b. If the Corps made the jurisdictional determination, what type of determination was 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 6b. If yes, explain. 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 ❑ 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 ❑ No ❑ Corps ❑ 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 ❑ PER ❑ Corps ❑ INT ❑ DWQ S2 ❑ P ❑ T ❑ PER ❑ Corps ❑ INT ❑ DWQ S3 ❑ P ❑ T ❑ PER ❑ Corps ❑ INT ❑ DWQ S4 ❑ P ❑ T ❑ PER ❑ Corps ❑ INT ❑ DWQ S5 ❑ P ❑ T ❑ PER ❑ Corps ❑ INT ❑ DWQ S6 ❑ P ❑ T ❑ PER ❑ Corps ❑ INT ❑ DWQ 3h. Total stream and tributary impacts 3i. Comments: Page 6 of 12 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 for 01 ❑ P ®T Lake Toxaway Boathouse Foundation 100 Lake 0.04 Acres Linear Ft (+/-) Temporary Turbidity Curtain to 02 ❑ P ®T Lake Toxaway Repair Seawall, 100 Linear Ft (+/- Lake 0.04 Acres Permanent Boathouse 03 ®P ❑ T Lake Toxaway Foundation (88 Linear Ft x 3 Ft Lake 0.02 Acres horizontal projection) 04 ❑P❑T 4f. Total open water impacts 0.10 Acres 4g. Comments: The work will be performed while the lake is at normal pool elevation. 1.0 NEW BOATHOUSE FOUNDATION. New presast concrete- block foundation to support new boathouse structure. 2.0 Boathouse foundation 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. Two (2) rows of Turbidity Curtains will also be used. 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) Flooded Filled Excavated Flooded Filled Excavated Flooded number of pond P1 P2 5f. 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 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. ❑ Neuse El Tar -Pamlico El 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 required. B1 ®P❑T El Yes ❑ No B2 ❑ P ❑ T ❑ Yes ❑ No B3 ❑P❑T El Yes ❑ No 6h. Total buffer impacts 6i. Comments: 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 work will be performed while the lake is at normal pool elevation. 1.0 Boathouse foundation 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. 2.0 Turbidity Curtains will also be used to isolate the work area from Lake waters. Turbidity curtains to remain in place until work is complete and the turbidity in the work area is less than 10 NTUs above background. Turbidity curtains shall be used outboard of the coffer dam to isolate the work area. Turbidity curtains to remain in place until work is complete and 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 El 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 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 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 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: ❑ 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 ❑ 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 E-1 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 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 El 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 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 ❑ ® No habitat? Yes 5b. Have you checked with the USFWS concerning Endangered Species Act ❑ ® impacts? Yes No E] 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 'designation Yes No status (e.g., National Historic Trustor 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? l 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? Patrick R McCarter & Amy R McCarter Trustees � Zat: Applicant/Agent's Ignature Applicant/Agent's Printed Name (Agent's signature is valid only if an authorization letter from the applicant is provided.) Page 11 of 12 PCN Form — Version 1.3 December 10, 2008 Version N'Ew LSD (�T l4-OUsF Elan .1a LAKE TOXAWAY / ROCK RETAINING is SIDE SETBACK RDDIC`RETMN{NG WALL3053 I FFE-3M0 .6T j j i w 8 2 STORY FRAME z� HOUSE Oq 4 R 4 I R CA -ORT _ ' r Lid Rc,l/NED D?moi\�.�oYle�' I SITE PIAN . In.rnA.R.,.ad BUTT: Infwm.o-n T.A.+ F�.n awN.n-Sun'.Y R. AI.Cw� wl Mn0.. alrCw-. A IYovl Yr4n,�fuie? b�e,vd. VG 80.11 .rr. PERMIT SET N01'FOR COrvsrRt c:ru> SP100 RR EMOV o REPLACE o OG° MOUSE and SEA ALL W MMC AR7ER REMBENCE 282 Windward Point, Lake Toxaway, NC 1.0 This Project is to remove and replace the existing boathouse and the existing seawall. The Architectural and Structural features of the new Boathouse above the top—of—Toxaway Block foundation shall be designed by others Comply with the latest edition of the Lake Toxaway Community Association Architectural Review Standards. 2.0 CONDITIONS FOR USE OF THIS PLAN. These conditions apply to all sheets and all engineering provided herein. By accepting this Plan, you and any others to whom it is distributed, agree to the following conditions; 2.1 As a result of this design, a number of observations have been made and recommendations provided, including plan(s), details and specifications. It should be noted that the plon(s), detail and specifications provided herein are based on information provided as of this writing. It is conceivable that additional information may be forthcoming which bears on these details and specifications. The right is reserved, therefore, to review and modify all observations, conclusions, details and specifications at any future point in time should, in fact,- additional information become available. 2.2 Limitation of Liability. All other work that may be required, but not shown herein, shall be designed by the Contractor. By accepting this engineering document, the Owner, Contractor and any others to whom it is distributed, agree to a strict limitation of liability for TERRY E. ALLEN ENGINEER, Terry E. Allen PE, T.E. ALLEN ENGINEERING, P.C., and its employees to an amount not to exceed $25,000.00 or one—half the total amount of paid invoices, whichever is less. 2.3 Indemnification. The Owner and the Contractor shall indemnify and hold harmless T.E. Allen Engineering, PC (hereinafter the `Engineer), and its officers, agents, employees and assigns, to the fullest extent permitted by law, for any loss, cost expenses or damages incurred by the Engineer as a result of the Owner's and/or Contractor's breach of this Agreement or for any act or omission caused solely by the negligence of the Owner and/or Contractor, its employees and its other consultants and subcontractors. This requirement to indemnify and hold harmless shall include compensation for the Engineer's reasonable attorney's fees. 3.0 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, NCDEQ Division of Water Quality 401 permit requirements, NC Sedimentation Pollution Control Act, Lake Toxaway Community Assoc requirements, 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. 4.0 TURBIDITY CONTROL. The Contractor shall not violate water quality stream standards during the performance of this work. The Turbidity Level in the lake waters shall not exceed 10 NTUs above background levels at any time during performance of this work pursuant to 15A NCAC 026.0211 (3)(k). The Contractor shall employ any and all methods necessary to prevent a violation of the Turbidity Standards. As a minimum, the following turbidity control measures shall be employed. These methods shall be modified and improved as necessary to prevent violation of water quality standards; 4.1 To ensure compliance with Water Quality requirements, the work shall be performed "IN THE DRY" using a coffer dam to create a dry work area. In addition to the coffer dam, a minimum of two (2) turbidity curtains shall be used around the outside (wet side) of the coffer dam. The work area isolated by the coffer dam may 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 dewatering flow from the flirtation bag shall be discharged in front of (on the work side of) the two (2) turbidity curtains for additional filtration. 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 work 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. Copyright 2019 T.E. ALLEN ENGINEERING PC. All Rights Reserved Worldwide. PRELIMINARY — NOT odE r O N U I d c_ d (D -C 0 O -,I C 10 CIO U „O— 3 aro 000 L U2aV\CO �cUO co co 0 0 r- 0��10 � Q, 0 0 0 CO C CO QQ] O ��°'w I� p .fl O (O = 00 .a Q O L c0 .— N O mmgrM w-0 IL U U `r z 10_ a U) a� c O� Gvo � o > o z N m w 00 N Wo a N CO a Z Q X o z C.D E- �Z E � M1 O oa N C LL.I O O a0: N � 0 d z � LLJ rn . J � — Q � E w M z U ¢ z a U) a� c O� Gvo Q : F- (� U b o > a`"i zro� N Lo U7 U 00 N CO a N CO a Z Q X o E- O oa m 04-01-2019 1 C-1 SHEET I OF 5 GENERAL NOTES AND SPECIFICATIONS. 1.0 All work shall be in accordance with the latest edition of the North Carolina Building Code, ACI 301 — Specifications for Structural Concrete for Buildings, ACI 318 & 318R — Building Code Requirements for Structural Concrete, ACI 548AR Guide for Use of Polymers in Concrete, ACI 546R Concrete Repair Guide, AISC Steel Construction Manual, OSHA Safety and Health requirements, and all other applicable codes, ordinances, and regulations. Contractor shall obtain all required permits prior to beginning work 2.0 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. 3.0 Contractor shall verify and establish all Finish Floor Elevations (FFE) prior to beginning work. Do not locate any part of the structure within any set—back, easement, right—of—way, floodway or flood fringe, NCDEQ regulated set—back, trout stream buffer zone (or other buffer zone or set back). 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. 4.0 Design criteria and assumptions: Design Method = ASCE-7, Minimum Design Loads for Buildings and other Structures Soil Bearing Capacity = 2000 psf, assumed Floor Live Load = 40 psf Floor Dead Load = 15 psf 5.0 FOOTINGS. The bottom of footings shall be located below the frost line. Footings shall be stepped where it is necessary to change the elevation of the top surface of the footings or where the slope of the bottom surface of the footings will exceed 0.1 unit vertical in ten units horizontal (1% slope). All individual pier footings shall be restrained from sliding with anti—slide keys, helical piers, etc). 6.0 CONCRETE. Concrete shall have a minimum compressive strength of 4000 psi at 28 days and shall have 5 to 7% entrained air. DO NOT ALLOW FRESH CONCRETE TO CONTACT LAKE WATERS. 7.0 REINFORCING STEEL. All reinforcing steel and anchor dowels shall conform to ASTM A 615, Grade 60 and shall have standard deformations. All footer reinforcing bars shall have a minimum of 3" of concrete cover. All rebor lap splices shall be 60 bar diameters unless otherwise noted. All footer steel shall be bonded and grounded per the NEC. 8.0 TROUT BUFFER REQUIREMENTS. Where the "on shore" work is within 25—ft of the top—of—bank, and exceeds 10% of the shoreline frontage, the Contractor shall obtain a Trout Buffer Variance from the NCDEQ—DLR Asheville Regional Office (P.O.C. Stan Akin, 828-296-4500)., 15A NCAC 04B .0125 BUFFER ZONE REQUIREMENTS. (a) Unless otherwise provided, the width of a buffer zone is measured from the edge of the water to the nearest edge of the disturbed area, with the 25 percent of the strip nearer the land—disturbing activity containing natural or artificial means of confining visible siltation. (b) The 25 foot minimum width for an undisturbed buffer zone adjacent to designated trout waters shall be measured horizontally from the top of the bank. (c) Where a temporary and minimal disturbance is permitted as an exception by G.S. 113A-57(1), land—disturbing activities ih the buffer zone adjacent to designated trout waters shall be limited to a maximum of ten .percent of the total length of the buffer zone within the tract to be distributed such that there is not more than 100 linear feet of disturbance in each 1000 linear feet of buffer zone. Larger areas may be disturbed with the written- approval of the Director. (d) No land—disturbing activity shall be undertaken within a buffer zone adjacent to designated trout waters that will cause adverse temperature fluctuations, as set forth in 15A NCAC 2B .0211 "Fresh Surface Water Classification and Standards", in these waters. PROPERTY OWNER OF RECORD: Patrick R McCarter & Amy R McCarter Trustees 2275 Amherst St. Palo Alto, CA 94306 © Copyright 2019 T.E. ALLEN ENGINEERING PC. All Rights Reserved Worldwide. PRELIMINARY — NOT FOR CONSTRUCTION oNo E r o N U I � -c c_ U C 00 0 rn 1 :„ .2o '•� 0 3 00 00 L U2N\y a7`. cU M cc U) 0Z 0) 0 0 3 c O.L U o O U o 0) (O C 0 O m OL c0, I v _C)0 _L _a 0.0 L. (O = N O Om0]q-:2 00.Q U � � CL N z M � o w E �o W O C,5 z oZ X pn0 1 U v LL.r 00 �" a C QU Z w^ m" Jo+ J � I - o < E d •� N (z, LL! rn U z � z a� a� B O C,5 V)c v o v �" a C QU Z � N (z, o rn U 00 O41 N CZ a EN X a Q o D Q (D mCaj r 04-01-2019 r C-2 SHEET 2 OF 5 TOXAWAY BLOCK, precast concrete segmental block, 24"W x 18"H x L 8'—On O "Toxaway Block" 0 _� 0 0 8 0 0 Concrete Segmental as of o 0 Block Foundation Wall. See Detail C° `00 0 0 on Sheet C-5. 0 0 0 012'0 0 0 0 — o 3 N o 6 O O d U O O o 8,o 0 0 0 0 0 w LAKE TOXAWAY o ° o O Wa o J 0 U) N w I Y= go X O Q o Q p 0 0 0 M 0 U) a 2o o Butte FOa N0 0 0 8'0 0 ... 0 0 o (o 0 12 o Clear 0 0 �k. 2' j2p 16'-0" oG m00% ..c.o DO NOT SCALE DRAWINGS Furnish and install #8 epoxy coated vertical dowel bar w/ 16' top hook, continuous through all segmental blocks cells. All cells in segmental blocks to be grouted solid w/ 4000 psi hydraulic cementious grout suitable for underwater application. See Detail on Sheet C-5. (n -F� 7 M BOATHOUSE FOUNDATION - ODD NUMBERED COURSES Not to Scale Limitation of Liability. By accepting this engineering document, the Owner, Contractor and any others to whom it is distributed, agree to a strict limitation of liability for TERRY E. ALLEN ENGINEER, Terry E. Allen PE, T.E. ALLEN ENGINEERING, P.C., and its employees to an amount not to exceed $25,000.00 or one—half the total amount of paid invoices, whichever is less. © Copyright 2019 T.E. ALLEN ENGINEERING PC. All Rights Reserved Worldwide. PRELIMINARY — NOT FOR CONSTRUCTION Cq od E n 0 N U I ci U 0) C c 00 ° 0) 1 0 >1L0 C U U2N\y cU 0 Y N �O Z r O 3 0 - 0 I 0 �yU 0c0 v3�Om 0 OL 0) I v .0 0 (0 00 -0 a0L_(O•- N o 00]md :m 00-0 CL U F CL N � o w E c Z Oz's Z U m S2 L= W dK . Z: �d w in " Q U lu z U ¢ z � O v o 8 � � °z��b> a U C� N W U 0000 .L GJ N z a,N X a o Q � 0 O 0.1 � .a I 04-01-2019 1 C-3 SHEET 3 OF 5 "Toxaway Block" Concrete Segmental Block Foundation Wall. See Detail on Sheet C-5. r TOXAWAY BLOCK, precast concrete segmental block, 24"W x 18"H x L I 8'-0"-7 o o4'o o 0j o 0 0 0 0 0 810 0 0 04 0 O O O O N m N N (0 N V 6 o w o 0 040 0 41 w ;Co o 0 M d 0 o M w� I I X N u O O W 2- a_ W d 0 0 O 0 W C J N I Y = 0 fn 07 � w Of 0a LAK E, TO XAWAY ¢ ° o ° 0 o v -0 m _o cn N N m 0 0 o cn , io a 0 0 04 0 0 0 0 o m 12'- Clear -� -� 0 0 DO NOT SCALE DRAWINGS Furnish and install #8 epoxy coated vertical dowel bar w/ 16" top hook, continuous through all segmental blocks cells. All cells in segmental blocks to be grouted solid w/ 4000 psi hydraulic cementious grout suitable for underwater application. See Detail on Sheet C-5. J2'2' I_- 16'-0" G y oa o B�HOUSE FOUNDATION - EVEN NUMBERED COURSES C-4 Not to Scale Limitation of Liability. By accepting this engineering document, the Owner, Contractor and any others to whom it is distributed, agree to a strict limitation of liability for TERRY E. ALLEN ENGINEER, Terry E. Allen PE, T.E. ALLEN ENGINEERING, P.C., and its employees to an amount not to exceed $25,000.00 or one—half the total amount of poi( invoices, whichever is less. © Copyright 2019 T.E. ALLEN ENGINEERING PC. All Rights Reserved Worldwide. PRELIMINARY — NOT FOR CONSTRUCTION N 00 n o N U I v U 00 'C S 00 0 0) 1Lo, O T� N 7 300 00 L U2N\� 04 CUM p 1 co C +O+ Z °O O C N 0 3 05,1: I 0 0 > C0 0 007� to ` �0 c(3) 1 0.0 OED -900.0 aoL.c0• 04 o �mm�:2 00-0 CL U N 6 o z � -- w ;Co O M d ZM OZ I I X N u w a& W d Z 4J d w fn J J � I _ o Q � E z U d z v � ai O°� V [U o " zU�� � U C Cd N w � � 00 N CO =aNXa Q 0 F � O ° m 1ti 04-01-7019 C-4 SHEET 4 OF 5 Furnish and install #8 epoxy coated vertical dowel bar w/ 16" top hook, continuous through all segmental blocks cells. All cells in segmental blocks to be grouted solid w/ 4000 psi hydraulic cementious grout All structure abo suitable for underwater application. Toxaway Blo Foundation to Reinforced Concrete Foundation designed by other Wall, designed by others. See Architectural Plan structural Drawings Structural Plans d by others. Reinforced Concrete Grade Beam 12'-0" all around, designed by others. I Clear Insid See Structural Drawings. See Note 1. Backfill w/ #57 clean. washed stone. Provide non–woven needle \ punched geotextile fabric — between stone and earth. 18" Min—f-r 18" Min. Increase depth / as required to insure L foundation bears on satisfactory insitu material having a minimum bearing capacity of 2,000 PSF Minimum bridging depth 10–FT. NOTES. 1 6'-0" Cover subgrade and wrap footer stone with Mirafi 50OX geotextile fabric 1.0 Furnish and install riprap toe apron for habitat. Riprap apron shall be installed at 2H:1 V and shall be equal to NCDOT Class 2. DO NOT SCALE DRAWINGS Furnish and install #8 epoxy coated "vertical dowel bar w/ 16" top hook, continuous through all segmental blocks cells. All cells in segmental blocks to be grouted solid w/ ve the 4000 psi hydraulic cementious grout ck suitable for underwater application. be s. See s and esigned Reinforced Concrete Grade Beam all around, designed by others. See Retaining Wall e Water Level "Toxaway- Block" Concrete Segmental Block Foundation Wall. �-- 6'-0" Cover subgrade and -A wrap footer stone with Mirafi 50OX geotextile fabric — 1 BOATHOUSE FOUNDATION SECTION C-5 Not to Scale w/ #57 clean stone. non–woven needle geotextile fabric stone and earth. 1b Min. Increase depth as required to insure foundation bears on satisfactory insitu material having a minimum bearing capacity of 2,000 PSF Minimum bridging depth 10–FT. Limitation of Liability. By accepting this engineering document, the Owner, Contractor and any others to whom it is distributed, agree to a strict limitation of liability for TERRY E. ALLEN ENGINEER, Teri E. Allen PE, T.E. ALLEN ENGINEERING, P.C., and its employees to an amount not to exceed $25,000.00 or one–half the total amount of paid invoices, whichever is less. © Copyright 2019 T.E. ALLEN ENGINEERING PC. All Rights Reserved Worldwide. PRELIMINARY – NOT FOR CONSTRUCTION ad E N U I ci U C c m 0 rn 1 Lo O >,r\ N 3:00 ao U M: 04 Yv'°Z-0 0 3 05,L I 0 " 0Vto O '000 0 co ` � O� 0) I � v fl oma= 00-0 ymm�r:2 oo.o Cl - it z U — — Backfill z washed CO Provide punched between 118" Min Cover subgrade and -A wrap footer stone with Mirafi 50OX geotextile fabric — 1 BOATHOUSE FOUNDATION SECTION C-5 Not to Scale w/ #57 clean stone. non–woven needle geotextile fabric stone and earth. 1b Min. Increase depth as required to insure foundation bears on satisfactory insitu material having a minimum bearing capacity of 2,000 PSF Minimum bridging depth 10–FT. Limitation of Liability. By accepting this engineering document, the Owner, Contractor and any others to whom it is distributed, agree to a strict limitation of liability for TERRY E. ALLEN ENGINEER, Teri E. Allen PE, T.E. ALLEN ENGINEERING, P.C., and its employees to an amount not to exceed $25,000.00 or one–half the total amount of paid invoices, whichever is less. © Copyright 2019 T.E. ALLEN ENGINEERING PC. All Rights Reserved Worldwide. PRELIMINARY – NOT FOR CONSTRUCTION ad E N U I ci U C c m 0 rn 1 Lo O >,r\ N 3:00 ao U M: 04 Yv'°Z-0 0 3 05,L I 0 " 0Vto O '000 0 co ` � O� 0) I � v fl oma= 00-0 ymm�r:2 oo.o Cl - it z U ¢ z a U a� °d 5 O m U o .o o QLE�a�ID Q U a`"i d z�Zro> > C2 V U'[ N W w L Ca N Op ECq a Q x O 4 N 1 04-01-2019 1 C-5 SHEET 5 OF 5