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HomeMy WebLinkAboutSW8940822_Historical File_19941004State of North Carolina Department of Environment, Health, and Natural Wilmington Regional office James B. Hunt, Jr., Governor DIVISION OF ENVIRONMENTAL MANAGEMENT Jonathan B. Howes, Secretary October 4, 1994 Mr. Elwood G. Lanier North Carolina Department of Cultural Resources 109 East Jones Street Raleigh, North Carolina 27601 - 2807 Dear Mr. Lanier: Resburees Bob Jamieson Regional Manager Subject: CERTIFICATION OF COMPLIANCE with Stormwater Regulations Stormwater Project No. SW8 940822 Fort Fisher Revetment New Hanover County The Wilmington Regional Office received the Stormwater Submittal for Fort Fisher Revetment on August 19, 1994, with final information on October 4, 1994. Based on our review of the project plans and specifications, we have determined that the project complies with the Stormwater Regulations set forth in Title 15A NCAC 2H.1003(a)(3). Any modification of the plans submitted to this Office or further development of this contiguous project will require an additional Stormwater Submittal/Modification and approval prior to initiation of construction, regardless of the fact that such modification may be less than one acre. Modifications include but are not limited to; project name changes, transfer of ownership, redesign of built -upon surfaces, addition of built -upon surfaces, redesign or further subdivision of the project area as shown on the approved plans. This Certification shall be effective from the date of issuance until rescinded. The project shall be constructed and maintained in accordance with the plans and specifications approved by the Wilmington Regional Office. This Certification does not supersede any other permit or approval. The developer is responsible for obtaining any and all permits and approvals necessary for the development of this project. This could include the Division of Coastal Management under CAMA requirements, the Division of Environmental Management under Wetland 401 Water Quality Certification and/or a Dredge and Fill Permit and/or a Sewer Extension/Collection Permit, U.S. Army Corps of Engineers 404 Wetland Permit, NPDES stormwater permit if disturbing five acres or more, local County or Town Agency permits under their local ordinances, or others that may be acquired. 127 Cardinal Drive Extension, Wilmington, N.C. 28405-3845 * Telephone 910-395-39W a Fax 910-350-2004 An Equal Opportunity Affirmative Action Employer Mr. Lanier October 4, 1994 Stormwater Project No. SW8 940822 An Engineer/Designer/Owner Certification must be submitted. The Certification will verify to this Office that the stormwater controls and the general layout of the project (amount of impervious area) are in substantial compliance with the approved Stormwater Plan. If you have any questions concerning this matter, please contact Greg Stutts or me at (910) 395-3900. Sincerely, ALL Dave Adkins Water Quality Supervisor DA/ges: S:\WQS\STORMWAT\CERTIFIC\940822.00T cc: Mr. Larry Creech, U.S. Army Corps of Engineers Mr. Sky Conklin, New Hanover County inspections Bradley Bennett Jim Craig, New Hanover County Greg Stuffs Wilmintgpn Regional Office Central Files DIVISION OF ENVIRONMENTAL MANAGEMENT DENSITY X ENGINEERED PROTECT DATA Project Name Fort Fisher Revetment Location (County, Township/Municipality, Address, Qtate Road) New Hanover, Fort Fisher, NC Hwy 421 Owner's Name North Carolina Department of Cultural Resources MailingAddress 109 East Jones Street, Raleigh, NC 27601-2807 Phone Number Submittal Date Brief Description (include map and appropriate drawings) Construction of stone revetment w/concret STA-PODS along existing shoreline. See attached plans and specs. Name of Water Body Receiving Stormwater Runoff Atlantic Ocean Classification of Water Body N/A If SA waters, engineered system, and distance is <0.5 miles, attach report of chloride sampling results mg/l State/Federal Permits/Approvals Required (Check appropriate blanks) CAMA Major Sedimentation/Erosion Control 404 Permit DEM/DHS Sewage Disposal Other (Specify) DEM Stormwater Permit CALCULATION OF BUILT UPON AREA Built upon area means that portion of a development that is covered by impervious or partially pervious cover including buildings, pavement, recreation facilities, gravel, etc., but not including wood decking. If the project includes areas draining to different water classifications, please note them separately below. Classification Built upon area Total Project Area % Built upon Area Allowable B/U Area Subwatershed N/A 5.5 acres 68 acres .0 30% Subwatershed Is the Project B/U Area s the Allowable B/U Area? Yes (If no, an engineered system is required.) % Built upon area = (built upon area / total project area) * 100 Built upon area limits for projects to meet density: SA waters --- 25%, Other ---30% STORMWAT1FR COLLECTION SYSTEM Describe how the runoff will be treated Evaporation and infiltration into existing sand soil will primarily handle the runoff in general area. Ditches along walkway and grading areas toward revetment will be accomplished. Office use only IV, W- MI LA:W ik D E C E 9 V P AUG .1 9 1994 DU DENIM �or.9 CIPeZZ Is the built upon area at least 30 feet from mean high water of all surface waters? Yes If no, please provide a description (Note: Only boat ramps, public roads, public bridges, and walkways to water related facilities are allowed within 30 feet of the mean high water line if the project is intended to meet stormwater control requirements through density limits.) DEED RESTRICTIONS AND PROTECTIVE COVENANTS By my signature below, I certify that the recorded deed restrictions and protective covenants for this project shall limit the allowable built -upon area per lot to square feet inclusive of right-of-way, structures, pavement, walkways or patios of brick, stone, or slate, not including wood decking, state that the covenants will be binding on all parties and persons claiming under them, that they will run with the land, and that benefits may be enforced by the State of North Carolina, therefore, the covenant cannot be changed or deleted without consent of the State. CERTIFICATION I, ,-El,�rd.ad. G. Lanier , certify that the information included on this submittal form is correct, that the project will be constructed in conformance with this information, and that to the best of my knowledge, the proposed project complies with the requirements of 15 NCAC 2H.1003 (b). I authorize the below named person or firm to submit stormwater plans on my behalf, and agree to abide by the deed restriction statement above. Z�"f - , Owner's Signatur Date Provide authorized person or firm name and address below: U.S. Army Corps of Engineers Post Office Box 1890 Wilmington, North Carolina 28402-.1890 FOLUSer , a Notary Publicfor the State of IA &UO l ll a, County of VCA-- , do h reby certify that tom 18 personally appeared before me this � day of f , 19 9 q, and acknowledges the due execution of the foregoing instrument. Witness my hand and official seal, 1A&at&W;q,X, .4. AUV-4 My commission expires .2 7, 1 Q ¢ g DIVISION OF ENVIRONMENTAL MANAGEMENT SIGN -OFF Regional Office Date Individual Evaluating Forms/Plans Date Regional Water Quality Supervisor cc: Applicant/WiRO/Bradley Bennett/Central Files SAkTaRMM°HATER Fort Fisher Revetment FORT FISHER, NORTH CAROLINA NARRATIVE oECE0Vv& n t M 1 g 1994 D. F. M Introduction: '-RQJ a Fort Fisher is the most heavily visited state historic site in North Carolina with 140,000 visits recorded in 1991. This historic site includes the remaining earthenwork fortifications part of which have been restored, a museum/visitor center and related parking facilities, a picnic area along the beach front, and a memorial at "Battle Acre". Project Description: The Purpose of this project is to provide shore protection for the existing historic site at Fort Fisher, North Carolina thru the construction of a rock revetment along the beach front. See plans for the alignment. Over the past decade, as during most of project history, the site has been subject to pervasive erosion resulting in a gradual loss of the original earthen mound fortifications and adjacent historic lands. The basic alignment follows along the existing erosional scarp line throughout the project limits. Riprap, broken asphalt and concrete are present along the existing beach face area as remnants of previous erosion control projects. Approximately 13 acres, including material storage areas will be disturbed as a result of the revetment construction. Project Locationz The project site is located along the southeastern coast of North Carolina in New Hanover County, on a peninsula which separates the lower Cape Fear River from the Atlantic Ocean. The historic site is immediately south of Kure Beach and is approximately 20 miles south of the city of Wilmington. Highway U.S. 421 passes through the project area providing access to the North Carolina Aquarium and adjacent public beach eventually terminating at the Fort Fisher/Southport Ferry terminal at the southern end of the peninsula. The Fort Fisher State Historic site covers approximately 264 acres and is administered by the North Carolina Department of Cultural Resources. The public beach to the south of the historic site is under state ownership and operated by the Division of Parks and Recreation. Adjacent Proper : The construction area is located on the Fort Fisher historic site. Private property adjoins the historic site's northern boundary. General Geology: The Ft. Fisher project site reflects the coastal environment of deposition. Typical sediments at Ft. Fisher to elevation -90 Mean Sea Level (MSL) are, y from oldest to youngest, Castle Hayne Formation (Eocene age), Bear Bluff Formation (Pliocene -Pleistocene), and Waccamaw Formation, Canepatch Formation, and Socastee Formation (Pleistocene). In Ft. Fisher area, the uppermost soil is poorly graded surficial sand with little or no fines (SP). These sands may be indistinguishable from buff colored Pleistocene sands underlying them. Shell fragments or layers of shell fragments may be found in both soils. Below the buff colored soil, lower Pleistocene sand (SP) or silty sand (SM) of gray -green color, are present. The contact between buff colored and gray -green colored soils is irregular ranging from 0 to -10 MSL. At the northern end of the project area, approximately 100 to 200-feet east of the alignment a predominantly tar_ to brown_ colored, poorly to moderately cemented, medium to coarse, sand size, shell fragments rock outcrop occurs. Informally, the type of rock is called coquina. The coquina is irregular in thickness and elevation and is discontinuous in occurrence. In addition, a discontinuous, thin lens of slightly to moderately cemented ferruginous sand was observed in a erosional exposure of the beach at the northern end of the project area. Storm Drainage: Storm water runoff within the construction site area is very irregular and does not follow any particular drainage pattern. Evaporation and infiltration are the primary means for which surface runoff within the existing oceanfront area is presently being handled. It is expected that this process will continue after the construction of the revetment. The revetment construction will not alter this present means of handling the surface runoff within the general area. Storm drainage work will primarily consist of grading areas to drain toward the revetment. All excavated areas resulting from the revetment construction and that are outside the limits of the stone placement will be backfilled with sand and graded to match the adjacent site conditions and/or sloped to drain toward the stone revetment. Backfill material will also be placed in areas between the revetment and the existing eroded scarp. Backfill material will primarily come from within the construction excavation limits with the borrow area shown on the plans as alternate source. Trench drains are provided to drain low points along the walkway and prevent excess water from ponding along the walkway and causing damage to the walkway. Erosion Control Measures: Temporary erosion control measures to be used as necessary and/or as directed by the contracting officer are contained in the specifications Section 1430: ENVIRONMENTAL PROTECTION. These measures consists of temporary silt fence, temporary silt ditches, temporary gravel filter basins, temporary seeding, erosion control matting, sand fences,etc. Sand fences will be required where necessary to retain the existing sand within the construction site and to protect the adjacent property. Other erosion control measures will provided where necessary for the material storage areas as well as the borrow area, should the contractor utilizes the borrow area. Permanent measures to consist of landcaping, seeding and grassing. See plate P-13 for Landscape plans, including the planting lists and locatirnxs. See specifications Sections 02935 and 02950 for additional requirements. Storm Water Management: Approximately 5.5 acres of impervious areas consisting of the stone revetment and paved walkway will be constructed as part of this project. The paved walkway surface only comprises about .5 acres. The total project area (aprrox. 68 acres) for purpose of density calculations consists primarily of the general historic site areas adjacent to and in the vicinity of the 2 construction area and does not consider the entire 264 acres for which the Fort Fisher State Historic site covers. Impervious area comprises approxomately 8W of the total project area. Mitigation Area: in order to provide mitigation measures for the project, a low area will be left along the southern end of revetment on the landward side between the southern end and the start of the walkway. These measures are necessary to preserve to low area that already exists within the general area at the south end of the revetment. 3 Fort Fisher Revetment Fort Fisher, North Carolina Summary of Pertinent Data Stone Revetment: Type of Construction Length Seaside Face Slope Landside Slope Crest Width Armor Stone Size Underlayer Stone Size Bedding Stone Size Toe Armor Unit Crest Elevation (NGVD) North Tieback Section Main Oceanfront Sections South Tieback Section Other Features: Asphalt Walkway Length Width Thickness Asphalt Aggregate Base Course Beach Access Type of Construction walkway Overlook Structures Type of construction Landscaping Type of Construction Quarry Stone with STA-POD Armor Unit Toe Apron 3,040 feet 2H:lV 1.5H:1V 16.5 feet 3 tons 350 to 600 pounds 2 to 7 inches diameter 5-ton STA-POD Unit 13 feet 13 to 15 feet 10 feet 2,770 feet 8 feet 2 inches 6 inches Timber stairs and Pile Supported Timber Framed Plantings adaptable to beach environment 4 STATE OF NORTH CAROLINA Department of Environment and Natural Resources WIRO Regional Office FILE ACCESS RECORD SECTION SWP DATE/TIME /Z'/�� %�• NAME fC ���1REPRESENTING Guidelines for Access: The staff of the Regional Office is dedicated to making public records in our custody readily available to the public for review and copying. We also have the responsibility to the public to safeguard these records and to carry out our day-to-day program obligations. Please read carefully the following before signing the form. 1. Due to the large public demand for file access, we request that you call at least a day in advance to schedule an appointment for file review so you can be accommodated. Appointments are scheduled between 9:00 a.m. and 3:00 p.m. Viewing time ends at 4:45 p.m. Anyone arriving without an appointment may view the files to the extent that time and staff supervision are available. 2. You must specify files you want.to review by facility name or incident number, as appropriate. The number of files that you may review at one appointment will be limited to five. 3. You may make copies of a file when the copier is not in use by the staff and if time permits. There is no charge for 25 or less copies.: cost per copy after the initial 25 is 2.5 per copv. Payment is to be made by check, money order, or cash in the administrative offices. 4. Files must be kept in the order you received them. Files may not be taken from the office. No briefcases, large totes, etc. are permitted in the file review area To remove, alter, deface, mutilate, or destroy material in public files is a misdemeanor for which you can be fined up to $500.00. 5. in accordance with GS 25-3-512, a $25.00.processing fee will be charged and collected for checks on which payment has been refused. 6. , The customer must present a photo ID, sign -in, and receive a visitor sticker prior to reviewing files. FACILITY NAME COUNTY 2. 3. 4. 5. 1 Sign uMame of Firm `or Business Date Time In Time Out (P fise attach business card to form if available) # Copes: Amt. Pd: