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HomeMy WebLinkAbout20040987 Ver 1_COMPLETE FILE_20040616 DEPARTMENT OF THE ARMY WILMINGTON DISTRICT, CORPS OF ENGINEERS PO BOX 1890 WILMINGTON NC 28402-1890 August 19, 2004 Regulatory Division Action ID No. 200400895 Mr. John Dorney Division of Water Quality North Carolina Department of Environment and Natural Resources 1650 Mail Service Center Raleigh, North Carolina 27699-1650 Dear Mr. Dorney: ?Y-o? R.. WETLANDS/ 401 GROUP AUG 2 3 2004 WATER QUALITY SECTION Reference the enclosed application of Figure Eight Island Homeowners Association for Department of the Army authorization and a State Water Quality Certification to complete maintenance dredging of previously authorized areas in Banks Channel and the waterway connector channel, and also, complete maintenance dredging in the existing lagoon and channel areas. All excavated sediments would be utilized for nourishment of the beachfront (10,000 LF) at the south end of Figure Eight Island, New Hanover County, North Carolina. Your receipt of this letter verifies your acceptance of a valid request for certification in accordance with Section 325.2(b)(ii) of our administrative regulations. We are considering authorizing the proposed activity pursuant to Section 404 of the Clean Water Act. We have determined that a water quality certification is required under the provisions of Section 401 of Section 404 of the Clean Water Act. A Department of the Army permit will not be granted until the certification has been obtained or waived. In accordance with our administrative regulations, in most cases, 60 days after receipt of a request for certification is a reasonable time for State action. Therefore, if you have not acted on the request, or asked for an extension of time, by October 18, 2004, the District Engineer will deem that waiver has occurred. -2- Thank you for your time and cooperation. Questions or comments may be addressed to me, Henry Wicker, at the Wilmington Regulatory Field Office, at (252) 910-4930. Sincerely, Henry Wicker Project Manager Wilmington Regulatory Field Office Enclosure jjz? ?s PERMIT APPLICATION MAINTENANCE DREDGING OF BANKS CHANNEL AND CONNECTING WATERS FIGURE "8" BEACH HOMEOWNERS ASSOCIATION Figure Eight Island Wilmington, North Carolina APRIL 2004 WETLANDS/ 401 CROUP /W6 o 1) q WATER QUALrrY SECTION 'Ad ==Il P' CRISER & TROUTMAN CONSULTING ENGINEERS mop, ?- 3809 PEACHTREE AVENUE, SUITE 102 • Box 3727 • WILMINGTON, NC 28406 (910) 397-2929 FAX (910) 397-2971 #5272 TABLE OF CONTENTS Letters of Transmittal DCM Form MP-1: Permit Application DCM Form MP-2 Excavation and Fill Appendix 3D: Appendix 5A: Appendix 5B: Appendix 5D: Appendix 5H: Appendix 6A: Narrative Description Environmental Impacts Drawings C1 through C13 Adjacent Riparian Property Owners Adjacent Property Owner Waiver Form Statement of Compliance with N. C Environmental Policy Report of Soil Testing by ECS, Ltd. II k ., FOR PERMITS TO DEVELOP IN NORTH CAROLINA'S COASTAL AREA COMPLETE THIS FORM TO BEGIN THE APPLICATION PROCESS UNDER THE LAWS LISTED BELOW: STATE Coastal Area Management Act (CAMA) N.C.G.S.113A-118 Dredge and Fill N.C.G.S.113-229 Water Quality Certification N.C.G.S.143-215 Easements in Land Covered by Water N.C.G.S.146-6,146-12 L :•y7 ka Y, i.. ?Jr4• *• arM•ati3i yy,,, r ?JT.rJ . ?r_.y??a 1SJ? vii: Nee ?a kysE?-may 4, ?f:: JI ? ?+ a If WK C ?y syn.: l?l:.'!'^f ..>?•, FEDERAL Construction, Dredging, Filling, or Other Work in Navigable Waters Section 10 of the Rivers and Harbors Act of 1899 Discharge Dredged or Fill Material into any Waters or Wetlands Section 404 of the Clean Water Act p DIVISION OF COASTAL MANAGEMENT NOR,H CAROUNA Dept. of Emironment, Health and Natural Resources Forms DCM-MP-I-MP-b JANUARY 1995 II Form DCM-MP-1 APPLICATION (To be eompleted by all applicants) b. City, town, community or landmark FIGURE EIGHT ISLAND 1. APPLICANT ' c. Street address or secondary road number ADJACENT TO BEACH ROAD SOUTH (FIGURE 8 ISLAND) a. Landowner: d. Is proposed work within city limits or planning Name FIGURE "8" BEACH HOMEOWNERS ASSOCIATION jurisdiction? X_ Yes No Address 15 BRIDGE ROAD e. Name of body of water nearest project (e.g. river, City WILMINGTON State NC creek, sound, bay) AT ANTI: O: AN AND MASON IN T ' 28411 D Phone (910) 686-0635 Zi ay p 3. DESCRIPTION AND PLANNED USE Fax (910) 686-1558 ' OF PROPOSED PROJECT b. Authorised Agent: ' Name DAVID KELLAM a. List all development activities you propose (e.g. building a home, motel, marina, bulkhead, pier, and excavation and/or filling activities. 15 BRIDGE ROAD Address EXCAVATION (DREDGING) OF BANKS CHANNEL AND CONNECTING ' CHANNELS & BAYS & DISPOSING ON FIGURE 8 BEACHES AS Ci WILMINGTON S NC BEACH RE-BUILDING. ty tate Zip 28411 Day Phone 910 686-0635 ! Y b. Is the proposed activity maintenance of an existing project, new work, or both? EXISTING PROJECT Fax (910) 686-1558 c. Will the project be for public, private or commercial c. Project name (if any) MAINTENANCE DREDGING OF BANKS use? PUBLIC DREDGING; PUBLICIPRIVATE-BEACH FILLING CHANNEL AND CONNECTING CHANNELS AND BAYS. d. Give a brief description of purpose, use, methods of construction and daily operations of proposed 1wOM Pe"mi %Q be iund in now of lardo~r(s), ad/or project. If cRANNEL MAINNTTENANCE WILL ENABLE additional pages, Pmlecr PAW. RE-USE OF SHOALED AREAS AND INCREASED AND IMPROVED ' USE OF EXISTING NAVIGATION CHANNELS; BEACH RENOURISHMENT I WILL ENHANCE RECREATIONAL USAGE OF THE BEACH AND HELP 2. LOCATION OF PROPOSED COUNTER EROSION PROCESSES. EXCAVATION WILL BE BY ' ECT PRO HYDRAULIC PIPELINE DREDGE. DREDGED SAND WILL BE J CONVEYED BY PIPELINE TO THE OCEAN BEACH FOR PLACEMENT SEAWARD OF VEGETATION/ESCARPMENT. ' a. County NEW HANOVER SEE APPENDIX 3D. I '' Form DCM-MP-1 4. LAND AND WATER CHARACTERISTICS a. Size of entire tract 'SEE ATTACHMENT A AND ATTACHED MAPS. b. Size of individual lot(s) SEE ATTACHED MAPS. c. Approximate elevation of tract above MIiW or NWL DREDGE AREAS VARY FROM-2 TO-9. FIGURE EIGHT ISLAND VARIES FROM 0 TO 12. d. Soil type(s) and texture(s) of tract NEW HAN FINE SAND; MADELAND; NATURAL BEACHIFOREDUNE e. Vegetation on tract NO VEGETATION IN AREAS TO RF nRFD('T NO VFAFTATION IN FII 1 AREAS f. Man-made features now on tract BEACHFRONT HOMES DUNE CROSSOVERS. SOUND FRONT H7 FS ROADS, I ANDSRAPIKIG g. What is the CAMA Land Use Plan land classification of the site? (concurs rue locoi land use plan.) x Conservation Transitional Developed Community Rural Other h. How is the tract zoned by local government? WATER AND BEACH UNZONED, LOTS R-205 ' i. Is the proposed project consistent with the applicable zoning? X Yes No (Armd, zoning conypliance nernficase, if applicable) j. Has a professional archaeological assessment been Yes x No 1. Are there wetlands on the site? Yes _ _X-- No Coastal (marsh) Other If yes, has a delineation been conducted? (AaaA doaunentadon, ltramWiable) done for the tract? Yes ? No If yes, by whom? k. Is the project located in a National Registered Historic District or does it involve a National ' Register listed or eligible property? m. Describe existing wastewater treatment facilities. NIA n.. Describe location and type of discharges to waters of the state. (For example, surface runoff, sanitary wastewater, industrial/commercial effluent, "wash down" and residential discharges.) PROJECT WILL NOT CHANGE ANY EXISTING STRUCTURAL DEVELOPMENT. SAND DEPOSITED ON BEACH BY HYDRAULIC DREDGE WILL RESULT IN EFFLUENT FROM DREDGE PIPE RETURNING TO OCEAN ADJACENT TO DISCHARGE POINTS. o. Describe existing drinking water supply source. COMMUNITY WATER SYSTEM-DEEP WELLS S. ADDITIONAL INFORMATION In addition to the completed application form, the following items must be submitted: • A copy of the deed (with state application only) or other instrument under which the applicant claims title to the affected properties. If the applicant is not claiming to be the owner of said property, then forward a copy of the deed or other instrument under which the owner claims title, plus written permission from the owner to carry out the project. • An accurate, dated work plat (including plan view and cross-sectional drawings) drawn to scale in black ink on an 8 1/2" by 11" white paper. (Refer to Coastal Resources Commission Rule 7J.0203 for a detailed description.) Please note that original drawings are preferred and only high quality copies will be accepted. Blue-line prints or other larger plats are acceptable only if an adequate number of quality copies are provided by applicant. (Contact the U.S. Army Corps of Engineers regarding that agency's use of larger drawings.) A site or location map is a part of plat requirements and it must be sufficiently detailed to guide agency personnel unfamiliar with the area to the I, Form DCM-MP-1 site. Include highway or secondary road (SR) numbers, landmarks, and the like. • A Stormwater Certification, if one is necessary. 19 A list of the names and complete addresses of the adjacent waterfront (riparian) landowners and signed return receipts as proof that such owners I' have received a copy of the application and plats by certified mail. Such landowners must be advised that they have 30 days in which to submit comments I' on the proposed project to the Division of Coastal Management. Upon signing this form, the applicant further certifies that such notice has been provided. ALL PROPERTY OWNERS ON FIGURE EIGHT SOUTH OF Name CAUSEWAY Address WILL BE NOTIFIED BY CERTIFIED MAIL. Phone Name SEE ATTACHED LIST-APPENDIX 5D TO MP-1 Address 1 Phone ' Name Address Phone • A list of previous state or federal permits issued for work on the project tract. Include permit numbers, permittee, and issuing dates. SEE ATTACHMENT B. TO MP-1 • A check for $ made payable to the Department of Environment, Health, and Natural Resources (DEHNR) to cover the costs of processing the application. • A signed AEC hazard notice for projects in oceanfront and inlet areas. I' • A statement of compliance with the N.C. Environmental Policy Ad (N.C.G.S. 113A - 1 to 10) If the project involves the expenditure of public funds or use of public land's, attach a statement documenting compliance with the North Carolina Environmental Policy Act. 6. CERTIFICATION AND PERM MION TO ENTER ON LAND I understand that any permit issued in response to this application will allow only the development described in the application. The project will be subject to conditions and restrictions contained in the permit. I certify that to the best of my knowledge, the proposed activity complies with the State of North Carolina's approved Coastal Management Program and will be conducted in a manner consistent with such program. I certify that I am authorized to grant, and do in fact, grant permission to representatives of state and federal review agencies to enter on the aforementioned lands in connection with evaluating information related to this permit application and follow-up monitoring of the project. I further certify that the information provided in this application is truthful to the best of my knowledge. This is the 15th day of April , 2004 Print Name Signature Lmdo~r or Au&or zad Agent Administrator Figure 8 Beach Homeowners Association, Inc. Please indicate attachments pertaining to your proposed project. X DCM MP-2 Excavation and Fill Information DCM MP-3 Upland Development DCM MP-d Structures Information DCM MP-5 Bridges and Culverts DCM MP-6 Marina Development NOTE: Please sign and date each attachment in the space provided at the bottom of each form. Form DCM-MP-2 1EXCAVATION FILL AND (Except bridges and culverts) Attach this form to Joint Application for CAMA Major Permit, Form DCM-MP-1. Be sure to complete all other sections of the Joint Application that relate to this ' proposed project. Describe below the purpose of proposed excavation or fill activities. All values to be given in feet. Average F W Existing Project Lengtb Width Depth Depth Access channel (MLW) or (NWL) Canal Banks channel * SEE ATTACHMENT A OF MP-}EIN BEFORE basin Boat ramp Rock ' groin Rock i breakwater 'CHANR BAYS (Excluding shoreline stabilization) 9,600 125' 3.5' ML 9' MLW 10,350' 125' 3.5' MLW 9' MLW I WATERWAY CONNECTOR 1. EXCAVATION a. Amount of material to be excavated from below MHW or NWL in cubic yards ?M non r Y " SEE NEXT PAGE b. Type of material to be excavated FINE TO MEDIUM SAND. SEE APPENDIX 1.6 TO MP-2 c. Does the area to be excavated include coastal wetlands (marsh), submerged aquatic vegetation (SAVs) or other wetlands? Yes X_ No d. Highground excavation in cubic yards NONE 2. DISPOSAL OF EXCAVATED MATERIAL a. Location of disposal area UPPER BEACH b. Dimensions of disposal area UP TO 10,000 LF OF OCEAN BEACH c. Do you claim title to disposal area? Yes x_ No If no, attach a letter granting permission from the owner. d. Will a disposal area be available for future maintenance? X Yes No If yes, where? SAME BEACH AREA ' Revised 03!95 I' Form DCM-MP-2 e. Does the disposal area include any coastal wetlands (marsh), SAVs or other wetlands? ' Yes X No UPPER BEACH FORESHORE ONLY NO VEGETATED WETLANDS f. Does the disposal include any area in the water? X Yes No 1 3. SHORELINE STABELIZATION N/A a. Type of shoreline stabilization Bulkhead Riprap I b. Length N/A If Yes, (1) Amount of material to be placed in the water INDETERMINATE (2) Dimensions of fill area LESS THAN 50 CYILE_- IN BASE AREA OF 150' UP TO EL+9 5 (3) Purpose of fill TO RFRI In n FROnFn RFCRFATIONAI BEACH PRO IDE STORM PROTECTION FOR RMIrTI IRFS DISPOSE OF MATERIAL FROM NAVIGATION PROJECT. b. Will fill material be placed in coastal wetlands (marsh), SAVs or other wetlands? Yes _ X No if yes, (1) Dimensions of fill area UPPER FoREsHoRE WIDTH VARIES 0 TO 150' (2) Purpose of fill TO RFRI III n FRnnrn RFCRFATInNAI BEACH AND PROVIDE STORM PROTECTION FOR STRUCTURES c. I Average distance waterward of MHW or NWL ! NIA I S. GENERAL d. Maximum distance waterward of MHW or NWL NIA a. How will excavated or fill material be kept on site e. Shoreline erosion during preceding 12 months and erosion controlled? EFFLUENT BERM WILL BE CONSTRUCTED r N/A (Source of informwion) PARR LEI TO 4HORF I INF RY n07FR ON RFAWARn FnGF nF RGAru Fu L.. EFFLUENT BERM WILL BE MAINTAINED IN ADVANCE OF DISCHARGE POINT ' A MINIMUM DISTANCE OF 200 . f. ' Type of bulkhead or riprap material N/A b. What type of construction equipment will be used (for example, dragline, backhoe, or hydraulic g. Amount of fill in cubic yards to be placed below dredge)? water level HYDRAULIC DREDGE DOZER BA .KHOE (1) Riprap NIA (2) Bulkhead backfill N/A c. Will wetlands be crassed in transporting equipment h. Type of fill material N/A to project site? Yes x No If yes, explain steps that will be taken to lessen environmental impacts. TIDAL SHORELINE WILL BE CROSSED ' i. NIA Source of fill material ONLY WHERE NO VEGETATION EXISTS. 4. OTHER FILL ACTIVITIES (Excluding Shoreline Stabilization) ' a. Will fill material be brought to site? x_ Yes No FI RE 8 BEACH HOMEOWNERS ASSOC. A t or . rml?d? cure APRIL 15, 2004 Date 1 ATTACHMENT A RE: Par 4a Banks Channel Waterway Connector Channel Sandy Point Channel Backfin Channel Sound Point Lagoon Entrance Salt Meadow Lagoon Entrance Sound Point Bay Salt Meadow Bay Backfin/Causeway Bay 7,750' x 125' 1,850' x 125' 2,200' x 125' 1,700' x (80' to 100') 200' (300' tapered to 100') 200' (300' tapered to 100') 800' x 125' 2,800' x 125' 2,450' x 125' 5777-3.16.04 U ATTACHMENT B TO FORM DCM-MP-1 Corps of Engineers Permit 12-66, issued to Island Development Corporation March 20, 1967, (canals adjacent to Sandy Point and Backfin Point Peninsulas) Corps of Engineers Permit 5-69, issued to Island Development Corporation January 28, 1969, (Banks Channel - length not defined, 300' top Width and 180' bottom width to -18' MLW) CAMA Permit 11-85, issued to Charles Winston, et al, March 21, 1985 (Banks Channel in vicinity of Sound Point Lagoon, 950' x 180') CAMA Permit 26-92 (Fed. I.D. 199000245) issued to Figure "8" Beach Homeowners' Association, Inc., February 27, 1992, (5,500' x 125' X-9') CAMA Minor Modification Permit 26-92, issued to Figure "8" Beach Homeowners' Association, Inc., May 13, 1992, (adds entrances to Lagoons 500'x 60'x (-9'- 6') MLW) CAMA Major Modification Permit 26-92, issued to Figure "8" Beach Homeowners Association, Inc., November 25, 1992 (added 4,800' Section of Banks Channel north of original permit and 800' Section of Waterway Connector adjacent to AIWW) CAMA Permit 29-98, issued to Figure "8" Beach Homeowners' Association, Inc., March 2, 1998 (8,200' x 125' x -9' for Banks Channel maintenance and intersection of Waterway Connector and AIWW and Entrances to two lagoons 200' x (300' tapering to 100') x -9' MLW) a 0 v w 0 W Z . . 0 M a, Q NARRATIVE DESCRIPTION MAINTENANCE DREDGING (BANKS CHANNEL) AND BEACH RE-BUILDING ¦ FIGURE EIGHT ISLAND, NORTH CAROLINA Background The small boat and navigation access channels which connect Banks Channel and connecting bays with the Atlantic Intracoastal Waterway (AIWW) have shoaled and shifted since Hurricanes Fran and Bertha in 1996, Bonnie in 1998, and Dennis and Floyd in 1999, making navigation difficult and dangerous. Correspondingly, the oceanfront of Figure Eight Island has suffered an accelerated rate of erosion, depleting material on the open beach and seriously eroding the primary dunes on the upper beach in this area. The proposed project is for the maintenance of the navigation channel and the rebuilding of the ocean beaches on the southern portion of Figure Eight Island. The area to be dredged is the same area previously dredged in prior projects with the possible exception of a portion of the channel that connects Banks Channel to the Atlantic Intracoastal Waterway ("Waterway Connector Channel"). There is no known documentation of whether this connector channel has been dredged, but it has been I continuously used for navigation since Figure Eight was developed beginning in the mid-to-late 1960s. The channel existed as a natural channel prior to the 1960s and its use by fishermen, hunters and other recreational users prior to the development of Figure Eight is known to older residents of the area. This navigation channel currently serves as the only viable connector to the Intracoastal Waterway for 197 sound side property owners. An 800' section of the connector channel beginning at the AIWW has been previously dredged. The remaining portion of the waterway connector is approximately 2,900'. The history of permits for the navigation channel is set forth in Attachment B to Form MP-1. The history discloses that much of the navigation channel was dredged during the original development in 1969 with a 300' authorized width and a -18' authorized depth. A small project by consortium of homeowners was implemented in 1985 primarily for the purpose of obtaining sand for an experimental beach protection project. The original 1992 permit authorized the dredging of a 125' x 5,500' channel behind the southern end of Figure Eight with the southern extent of dredging extending to the 1992 location of Mason Inlet. The 1992 project was twice modified. The first modification added the entrances to the two lagoons. The second modification ' extended the project northward to cover all of Banks Channel as well as an 800' long area where the waterway connector meets the AIWW. In 1992 Mason Inlet was located slightly farther south than its current location. The permit apparently allowed connection of the southern end of the channel to the throat of Mason Inlet, but the actual dredging stopped a few hundred feet north due to lack of funds and contractual commitments. 5272 - 4.13.04 Pagel 1I t The 1998 permit allowed dredging in the same location and to the same dimensions as the modified 1992 permit with the exception that the dredging was terminated 200' south of the southern lagoon rather than extending southward to the 1992 location of Mason Inlet. The 1998 permit also allowed wider and deeper connections between the two lagoons and Banks Channel. Figure Eight did the work authorized in the '98 permit but dredged only -6' MLW due to an agreement with Shell Island Resort. All of the prior projects resulted in disposal of the dredged sand on the ocean beaches of Figure Eight south of the causeway. The 1969 permit may have also resulted in disposal of sand on upland areas other than the active ocean beach. Project Description ' Maintenance dredging is in the sub-tidal shoal areas in the proposed generally open water area of Banks Channel and the Waterway Connector Channel. There are one or two small areas where the shoal areas may be intertidal. Banks Channel and the Waterway Connector Channel are the primary navigation channels as well as the main hydraulic channels for the sound area behind Figure Eight. These channels have been relatively stable through the years but hurricane activity mentioned before, which had high water beach overwash along with storm-level erosion, created some ' redistribution of shore and bottom sediments. Also the long term instability of Mason Inlet as it migrated southward contributed to a higher level of sediments to the navigation channels. In 2002 the Inlet Relocation Project created another unstable condition at the inlet and its sediment basins and resulted in more sediments being fed into the navigation channel. The creeks connecting to Banks Channel have been choked in some locations due to this higher level of sedimentation. This project will offer the additional benefit of restoring flows so as to allow natural processes to rechannel these creek mouths. All of the sand materials removed will be discharged along approximately 10,000 linear feet of beachfront, extending from the southernmost lots northward. A transition adapted to the existing beach profile approximately 300 to 400 feet long will be provided at both ends of the beach fill. The basic dimensions of the beach fill will be to an elevation of approximately 9.5' mean sea level (MSL) with a berm width of at least 100'. The ocean side of the berm will be shaped to an approximately 20:1 slope between elevation 7 and -2.0' MSL (see sheets 1 and 3 of the permit application for sketches of beach fill location and proposed beach profile). It is estimated that approximately 230,000 cubic yards of medium to fine sand materials will be excavated from the proposed area to be dredged by hydraulic pipeline dredge. The material will be transported by the dredge pipeline and deposited along the beachfront using a temporary protective berm parallel to the shoreline to control the effluent run-off, ensuring maximum upland beach deposition of the material and minimizing turbidities within the surf zone. 1 5272 - 4.13.04 Page 2 I' Test borings and sand samples were taken during March 2004 along the length of the proposed channel maintenance dredging areas and on the ocean beach as shown on the sample location map of the attached report (Appendix 6a). The sampling and testing were done by an independent geotechnical contractor with one sample extracted from the near-bottom area and a second sample at -9 MLW. A grain size analysis of the materials sampled is attached hereto. Current visual ob- servation of the areas to be dredged and visual observation of the material dredged in 1999 indi- cate that the current sediments are essentially the same as those dredged in 1993 and 1999. All excavations are to be done by hydraulic pipeline dredge. All materials excavated will be pumped to selected beach locations to reconstruct the beach sections as described above. Pipe- line corridors will be established to ensure that no marsh areas or sensitive vegetation will be crossed during the operation. All dredging will be done during the winter season when biological activities in both the sound and beach areas will be at a minimum. II The median grain size has been compared for all of the sample locations and are tabulated as follows: DEP TH SAMPLE SURFACE EXIST. BOTTOM -9 MLW B-1 0.23 B-2 0.25 B-3 0.23 B-4 0.35 S-1 0.19 0.22 S-2 0.38 0.25 S-3 0.20 0.20 S-4 0.20 0.18 S-5 - 0.19 S-6 0.14 0.39 S-7 0.20 0.24 S-8 - 0.18 S-9 0.19 0.13 S-10 0.19 0.18 5-11 0.18 0.20 5-12 - 0.18 5-13 - 0.20 5-14 - 0.18 5-15 - 0.17 5-16 0.19 - 5-17 0.13 - 5-18 Silt 0.22 5-19 - 0.16 5-20 - Silt 5272 - 4.13.04 Page 3 V Q J Q W Z cr W Z Q Environmental Impacts APPENDIX 5A General In general, the environmental impacts resulting from the work proposed in this project will be relatively minimal in that all the work will be accomplished during the winter season when ' biologic activities are at a minimum. Channel bottom areas that will be disturbed during dredging operations have either been previously dredged during the original island development and channel maintenance operations or used continuously for navigation purposes. The run of ' Banks Channel north and west to the Intracoastal Waterway represents the primary means of access to regional fishing areas and navigable ocean inlets for boat owners on the southern half of Figure Eight Island. Banks Channel is also a protected area for water skiing. Waterway Connection Along with the dredging of the main run of Banks Channel, CAMA Permit 29-98 also authorized an 800' long dredging area from the Intracoastal Waterway into the northwest end of the connector to Banks Channel. The current proposal includes this 800' segment with a 450' extension to the east to cover an area currently shoaled to less than -5' mlw. This is the most shallow channel area between the waterway and Banks Channel and currently impacts navigation for larger boats. The applicant is currently coordinating with NCDMF to perform a shellfish survey within the 450' extension to determine the presence and abundance of any resource. Navigation/Shoaling In 2002, New Hanover County moved Mason inlet approximately 3000' north of its former location. Since that time, the inshore areas have experienced significant sand deposition with the formation of the flood shoal system. Currently, extensive shoal areas exist from roughly the location of the entrance to the southern lagoon southward for a distance of over 2000' to the inlet and entrance to Mason Creek. The proposed excavation area for this portion of the project has been designed to minimize impacts to intertidal shoals by generally aligning with the 0' mlw contour at the southern extent as shown on sheet C7. Excavation will not extend beyond 200' south of the southern lagoon entrance. Navigation from Banks Channel to the south to reach either the ocean through Mason Inlet or the waterway through Mason Creek will continue to be unreliable and potentially hazardous. The applicant understands that New Hanover County will be moving forward with seeking authorization for the first maintenance event for the Mason Inlet Relocation Project. While that is a separate, distinct project with a different purpose, the applicant is willing to coordinate with the County in an attempt to utilize the same dredging contractor to perform both projects under a single mobilization effort, provided that both projects are authorized for the same dredging season. This coordination has the potential to minimize overall disturbance. 1 5272 APPENDIX A-4.14.04 I Laeoons and Canals The lagoons and canal system originally formed during island development are proposed to be maintained as part of the project. At present, the lagoon entrances are impacted by subtidal shoaling, which inhibits tidal circulation and could impact the levels of dissolved oxygen within ' the lagoons. Clearing shoals from the lagoon mouths will provide optimal flushing and navigation safety. ' Beach Disposal Much of the area to be dredged consists of deposited sand set into motion by hurricane activity and the relocation of Mason Inlet. The origin of most of the material to be dredged from Banks ' Channel is the ocean beach itself. Through littoral drift, flood shoal formation processes and storm effects, the sand has accumulated most noticeably within the southern quarter of the proposed dredging area. Soil samples were taken in March, 2004 to determine the relative soil ' characteristics of the beach and sound area. Beach samples tested similar to those taken in 1992 with that near the southern end slightly finer (in gradation) than that from the center of the beach segment. Samples taken in Banks Channel show a slightly smaller median grain size than that from the beach strand. This can be explained as a normal indication of the smaller particles becoming water-borne and carried inside the inlet to form alluvial deposits. Grain sizes within the interior lagoons and canals are also smaller than beach sands. It is felt however that a portion of these smaller particles will serve to infill the larger voids within the sand on the beach while the remaining suspended particles will settle fairly rapidly in down-drift areas. Should pockets of extremely fine sediments be encountered, these materials will be compartmentalized within a ' temporary diked area on the upper dry sand beach, allowed to dewater and then mixed mechanically by dozers before final grading. The removal of these deposits from the lagoons and canals will ultimately allow better water circulation and flushing as well as restore original navigation safety. The environmental impacts resulting from the disposal of the dredged material on the beach should be similar to or less than those of authorized past nourishment projects on Figure Eight Island or Wrightsville Beach. The deposition of material on the beach will occur i' between November 15th and March 31St in order to avoid impacts to turtle nesting and migration. No hopper dredges that have the capability to entrain turtles will be utilized during the project. As with similar former projects here, there is no reason to believe the sediments to be excavated and deposited on the beach have been exposed to any environmental contamination event. In order to minimize the amount of turbidity and suspended sediments in the surf zone, a diversion berm formed parallel to the shoreline and generally centered on the 0.0 MSL contour will prevent the sand and water mixture pumped to the beach from flowing directly into the surf. The 200'+ berm maintained in advance of the discharge pipe, will allow the maximum amount of particulate settling before allowing the water to return to the ocean. Following mechanical ' shaping of the upper dry sand beach in the disposal area and after the actions of several tidal cycles, the resulting beach profile is anticipated to slope at 15 to 20:1 above MHW and 20 to ' 30:1 below MHW out to just beyond the MLLW contour. The beach will be monitored the April following the project to remove any escarpment that may present an impediment to turtle nesting. 5272 APPENDIX A-4.14.04 2 1I 1I Coastal Wetlands/PNA's/SAV's No areas of vegetated coastal wetlands are to be disturbed by the proposed project. The planned channel dredging will occur far enough offshore of marsh areas so as to allow for an equilibrated side slope of 3:1 to form without threatening stands of vegetation. The channel excavation work will not be performed within any Primary Nursery Area (PNA) as designated by the NC Division of Marine Fisheries. No areas of submerged aquatic vegetation (SAV's) are known to exist south of Pender County. The dredge pipeline will be oriented to cross the shoreline in areas that do not have a coastal wetland fringe or 404 wetlands. Essential Fish Habitat (EFH) Essential Fish Habitat (EFH) provisions of the Magnuson-Stevens Fishery Conservation and Management Act help to maintain marine fishery habitat quality and quantity through National Marine Fisheries Service (NMFS) and regional fishery management council consultation on proposed projects that may affect fishery managed species either directly or indirectly. The proposed area of maintenance dredging and associated beachfront disposal is located in an area identified as EFH for postlarval, juvenile, and adult red drum (Sciaenops ocellatus), bluefish (Pomatomus saltatrix), summer flounder (Paralichthys dentatus), cobia (Rachycentron canadum), brown shrimp (Penaeus aziecus), pink shrimp (Farfantepeneaus duorarum), and white shrimp (Farfantepeneaus setiferus). Juvenile and adult gag grouper (Nycteroperca microlepsis), gray snapper (Lutjanus griseus), king mackerel (Scomberomorus cavalla), spanish mackerel (Scomberomorus maculatus) may also utilize EFH of the area. Table 1 provides a list of all EFH species (including life history stage) present in Middle Sound and Mason Inlet. Other estuarine-dependent species including spot (Leiostomus xanthurus), Atlantic menhaden (Brevoortia tyrannus), and striped mullet (Mugil cephalus) that serve as prey for fisheries managed species (e.g. snappers, groupers, tuna, and sharks) inhabit the Middle Sound complex. Categories of EFH within and adjacent to the project area include estuarine emergent wetlands, intertidal/subtidal bottom habitats, oyster/shellfish beds, and estuarine/marine water column. The Fishery Management Plan Amendments of the South Atlantic Fishery Management Council (FMC) have targeted specific categories of EFH and Habitat of Particular Concern (HAPC) as depicted in Table 2. Table 3 provides an impact summary for all designated categories of EFH and HAPC. While all twenty-six (26) habitat categories occur in waters of the southeastern United States, only those existing within or adjacent to the project area are addressed in this evaluation. ' Impacts on Estuarine Emergent Wetlands As discussed above, there will be no impacts disposal activities. The dredge corridor within ' located sufficiently waterward of existing marsh without any disturbance to marsh vegetation. 5272 APPENDIX A-4.14.04 X11 to emergent wetlands from either dredge or Banks Channel and connecting waters will be to allow for an equilibrated side-slope of 3:1 Impacts on Intertidal Flats (includine sand and mud bottom habitats) Intertidal flats and subtidal bottom will be directly impacted by the removal of sediment accumulating within Banks Channel and connecting waters. Nearly the entire length of the proposed dredge corridor, however, has been dredged under previous CAMA permit ' authorizations. The only area not previously permitted for dredging is the 450-ft extension located near the Intracoastal Waterway (as discussed above). The entire project area represents an area traditionally maintained for recreational boat use and navigation. Based upon recent detailed hydrographic surveys of the area, much of the proposed dredge corridor is located over subtidal bottom habitat. Of the approximately 57.1 ac to be dredged, 1.3 ac consists of intertidal sand flats. The excavation of these intertidal areas will result in the conversion of intertidal sand flat to subtidal bottom (average design depth of - 9 ft MLW). Fish species (particularly summer flounder) utilizing this type of habitat as resting areas during migration to and from back-barrier marsh complexes will be displaced to adjacent intertidal sand flats. Typically, larval and post-larval summer flounder drift and migrate inshore during the late winter, while sub-adults migrate offshore during the late summer and fall. Though temporary disturbance/displacement may occur, this area of intertidal flats is relatively small in proportion to the expanse of unvegetated intertidal habitat located adjacent to the project area. ' Benthic prey items of fish populations utilizing intertidal flats will be subject to abrupt impact from dredging and nourishment activities. However, Reilly and Bellis (1978) reported that population regeneration occurs within 1 to 2 seasons once pumping operation ceases. Essink et ' al. (1998) reported that species densities, biomass, and diversity of the zoobenthic community of beachfront habitats returned to pre-project values within one to two years . Other studies (National Research Council, 1995; Hackney et al., 1996; Ross and Lancaster, 1996) suggest that species recovery will occur rather quickly provided certain mitigative measures (i.e. avoiding peak recruitment periods) are employed. Project activities will result in direct disturbance to estuarine, subtidal and intertidal habitat. These habitat types are continually subject to natural dynamic forces (e.g. waves, wind, and storm events) that drive depositional processes. As a result, species utilizing this habitat are continually adapting to changes in substrate elevation and surface area. In addition, the dredge corridor represents an area historically maintained and dredged. Processes contributing to the formation of intertidal habitat outside the project area will not be affected. The expanse of intertidal flats beyond the project area will continue to be utilized by the listed fish species. Therefore, the cumulative effect of maintenance dredging and nourishment to intertidal flat EFH is not considered to be significant. Oyster Reefs and Shellfish Beds Intertidal oyster reefs and subtidal oyster beds provide important ecosystem functions including structural complexity for refuge, water column filtering, and feed habitat for resident and transient species (Coen et al. 1999). Marine invertebrate species such as polychaetes, crabs, and amphipods that reside within oyster reef communities serve as important prey items for red I1 5272 APPENDIX A-4.14.04 4 drum, summer flounder, striped bass, and other finfish species (Noble 1999). As such, oyster reefs have been designated as EFH by the South Atlantic Fishery Management Council. No oyster reefs are located within the project area. Scattered oyster beds are located along interior creeks of Middle Sound with some occurring near marsh edges of open water. However, the area of the proposed dredge corridor will be located a sufficient distance from marsh edges as to avoid disturbance to any potential oyster beds. In addition, the applicant has coordinated with the NC Division of Marine Fisheries (DMF) to identify the presence of potential shellfish resources in the project area. Available shellfish survey data from DMF indicate that no oyster or clam resources were present from sampling within the mapped habitat type to be impacted by the project. Therefore, it is unlikely that the proposed activities will impact this category of EFH. Impacts on the Marine and Estuarine Water Column Mortality of organisms lacking the ability to escape the suction field of an operating dredge and subsequent entrainment in the flow of water and sediment passing through its pumping equipment is likely. However, previous USACE studies have demonstrated that only an ' extremely small percentage (a fraction of 1%) of marine and estuarine larvae are subject to entrainment based upon the amount of water that a dredge can pump. Dredge entrainment impacts to bottom-dwelling fish, crabs and free-swimming larval organisms is anticipated to approximate those of other authorized navigation projects. No significant impact on these life forms is expected at local or regional population levels. I' During beach deposition, immediate localized impact from abrupt increases in sedimentation along the surf zone may negatively affect fish present at the time of the proposed work. However, siltation and turbidity within the surf zone will be minimized through the use of a ' diversion berm (see description above). Placement of sediment consisting predominantly of medium to fine grain size sands will minimize turbidity and/or other water quality impacts. ' According to USACE (1997), sediment consisting of more than 90% sand is not likely to produce significant turbidity. These design elements will minimize water quality impacts and subsequent disturbance to estuarine-dependent and surf zone fishes. Effects of any elevated turbidity will be limited both temporally and spatially. Turbidity levels tend to decrease rapidly subsequent to dredging or excavation through simple mixing and dilution processes (associated with tidal currents and wind). Indeed storm events can produce equally hi levels of II' suspended sediments. The spatial scale of elevated turbidity related to dredging is often minor (USACE 2001). ' No quantitative assessments have been conducted to evaluate beach nourishment impacts to surf zone fishes in this area. It is understood that federal agencies are currently discussing an integrated monitoring plan to gather data with which to identify more accurately potential impacts to fishes utilizing the immediate shoreline area. NMFS has commented that restricted lateral movement of early life stage fishes may make these individuals more susceptible to nourishment impacts. More mobile sub-adult and adults that prey upon benthic macrofauna of ' the surf zone (e.g. mole crabs and coquina clams) would likely move to adjacent undisturbed beach areas and other suitable feeding areas for the temporary period of benthic population re- ' 5272 APPENDIX A-4.14.04 5 11 establishment. It should be noted that the beach disposal area to be used is located entirely within the footprint previously permitted for the Mason Net Relocation Project. Impact Summary for Essential Fish Habitat Of the twenty-six (26) categories of identified EFH within southeastern United States, four categories (estuarine emergent wetlands, estuarine water column, marine water column, and intertidal/subtidal bottom) occur within or adjacent to the project area (refer to Table 3). Negative impacts associated with dredging and nourishment activities will be relatively short- term and confined predominantly to the three- to four-month project window. The project site has been historically dredged and maintained for recreational boat use. There will be no disturbance to estuarine emergent wetlands. The cumulative impact to fish habitat resulting from the proposed activities is considered to be minor and short-lived. Therefore, negative impacts to EFH associated with dredging of Banks Channel and connecting waters and the disposal of material on the beachfront of Figure Eight Island have been determined to be not significant. 5272 APPENDIX A-4.14.04 6 Table 1. Presence of Managed Species (including life cycle stage) for Area Water Bodies.' 'Table contents from National Marine Fisheries Service (Beaufort, NC) E - Eggs L - Larval J - Juvenile A - Adult N/A - Not Found Masan Inlet Middle Sound Rich Inlet AIWW (throughout NC) Atlantic Ocean South of Cape Hatteras Red drum ELJA EI,JA ELJA ELJA A Bluefish ELJA ELJA ELJA ELJA JA Summer flounder L.IA LJA LJA LJA ELJA Gag grouper JA J JA J ELJA Gray snapper JA J JA J ELJA Dolphin N/A N/A N/A N/A ELJA Cobia ELJA ELJA ELJA ELJA JA King mackerel JA .1A JA JA ELJA Spanish mackerel JA .IA JA LJA ELJA Black sea bass LJA LJA LJA LJA ELJA Spiny dogfish JA JA JA JA ELJA Brown shrimp ELJA ELJA ELJA ELJA ELJA Pink shrimp ELJA ELJA ELJA ELJA ELJA White shrimp ELJA ELJA ELJA ELJA ELJA Atlantic bigeye tuna N/A N/A N/A N/A N/A Atlantic bluefin tuna N/A N/A N/A N/A N/A Skipjack tuna N/A N/A N/A N/A N/A Longbill spearfish N/A N/A N/A N/A N/A Shortfin mako shark N/A N/A N/A N/A N/A Blue shark N/A J N/A N/A N/A N/A 5272 APPENDIX A-4.14.04 7 i Table 1.(continued). Presence of Managed Species (including life cycle stage) for Area Water Bodies. E - Eggs Mason Inlet Middle Rich Inlet AIWW Atlantic L - Larval Sound (throughout Ocean South J - Juvenile NC) of Cape A - Adult Hatteras N/A - Not Found Spinner shark N/A N/A N/A N/A ELJA Sword fish N/A N/A N/A N/A ELJA Yellowfin tuna N/A N/A N/A N/A ELJA Blue marlin N/.A N/A N/A N/A ELJA White marlin N/A N/A N/A N/A ELJA Sail fish N/A N/A N/A N/A ELJA Calico scallop N/A N/A N/A N/A ELJA Scalloped A N/A A N/A JA hammerhead shark Big nose shark A N/A A N/A JA Black tip shark A N/A A N/A JA Dusky shark A N/A A N/A JA Night shark A N/A A N/A JA Sandbar shark A N/A A N/A JA Silky shark A N/A A N/A JA Tiger shark A N/A A N/A JA Atlantic sharpnose A N/A A N/A JA shark Longfin mako A N/A A N/A JA shark Whitetip shark A N/A A N/A JA Thrasher shark A N/A A N/A JA 5272 APPENDIX A4.14.04 8 g r f Table 1 (continued). Presence of Managed Species (including life cycle stage) for Area Water Bodies. E - Eggs L - Larval J - Juvenile A - Adult N/A - Not Foutict Mason Inlet Middle Sound Rich Inlet AIWW (throughout NC) Atlantic Ocean South of Cape Hatteras Gray triggerfish N/A N/A N/A N/A ELJA Yellow jack N/A N/A N/A N/A ELJA Blue runner N/A N/A N/A N/A ELJA Crevalle jack N/A N/A N/A N/A ELJA Bar jack N/A N/A N/A N/A ELJA Greater amber ack N/A N/A N/A N/A ELJA Almaco jack N/A N/A N/A N/A ELJA Banded rudderfish N/A N/A N/A N/A ELJA Spade fish N/A N/A N/A N/A ELJA White grunt N/A N/A N/A N/A ELJA Hogfish N/A N/A N/A N/A ELJA Puddingwife N/A N/A N/A N/A ELJA Blackfin snapper N/A N/A N/A N/A ELJA Red snapper N/A N/A N/A N/A ELJA Cubera snapper N/A N/A N/A N/A ELJA Silk snapper N/A N/A N/A N/A ELJA Vermillion snapper N/A N/A N/A N/A ELJA Blueline tilefish N/A N/A N/A N/A ELJA Sand tilefish N/A N/A N/A N/A ELJA Bank sea bass N/A N/A N/A N/A ELJA 5272 APPENDIX A-4.14.04 9 Table 1 (continued). Presence of Managed Species (including life cycle stage) for Area Water Bodies. E - Eggs L - Larval J - Juvenile A - Adult N/A - Not Found Mason Inlet Middle Sound Rich Inlet AIWW (thoughout NC) Atlantic Ocean South of Cape Hatteras Rock sea bass N/A N/A N/A N/A ELJA Graysby N/A N/A N/A N/A ELJA Speckled hind N/A N/A N/A N/A ELJA Yellowedge grouper N/A N/A N/A N/A ELJA Coney N/A N/A N/A N/A ELJA Red hind N/A N/A N/A N/A ELJA Jewfish N/A N/A N/A N/A ELJA Red grouper N/A N/A N/A N/A ELJA Misty grouper N/A N/A N/A N/A ELJA Warsaw grouper N/A N/A N/A N/A ELJA Snowy grouper N/A N/A N/A N/A ELJA Yellowmouth grouper N/A N/A N/A N/A ELJA Scamp N/A N/A N/A N/A ELJA Sheepshead JA JA JA N/A ELJA Red porgy N/A N/A N/A N/A ELJA Longspine porgy N/A N/A N/A N/A ELJA Scup N/A N/A N/A N/A ELJA Little tunny N/A _ N/A N/A N/A ELJA 5272 APPENDIX A-4.14.04 10 Table 2. Categories of Essential Fish Habitat and Habitat Areas of Particular Concern in Southeast States. 1,2 Essential Fish Habitat Geographically Defined Habitat Areas of Particular Concern Estuarine Areas Area-wide Aquatic Beds Council-designated Artificial Reef Special Management Zones Estuarine Erne ent Wetlands Henna is (reef-forming) Coral Habitat and Reefs Estuarine Scrub/Shrub Mangroves Hard Bottoms Estuarine Water Column Ho Hills Intertidal Flats Sa assum Habitat Oyster Reefs and Shell Banks State-designated Areas of Importance of Managed Species Palustrine Eme ent and Forested Wetlands Submerged Aquatic Vegetation Sea grass Marine Areas North Carolina Artificial/Manmade Reefs Big Rock Coral and Coral Reefs Bogue Sound Live/Hard Bottoms Capes Fear, Lookout, and Hatteras sand shoals Sa assum New River Water Column The Ten Fathom Ledge The Point As identified in the Fishery Management Plan Amendments of the South Atlantic Fishery Management Council and included in Essential Fish Habitat: New Marine Fish Habitat Mandate for Federal Agencies (February 1999) 'Adapted from USACE Environmental Assessment - Preconstruction Modifications of Authorized Improvements Wilmington Harbor. North Carolina (February 2000) 1 5272 APPENDIX A-4.14.04 11 !II Table 3. Summary of Potential Impacts to Essential Fish Habitat and Habitat Areas of Particular Cnneem1,2 ESSENTIAL FISH HABITAT Present in or adjacent to Project Area Potential Impacts Dredge Operations Potential Impacts Beach Disposal Estuarine Areas Aquatic Beds No N/A N/A Estuarine Emergent Wetlands Yes No No Estuarine Scrub/Shrub Mangroves No N/A N/A Estuarine Water Column Yes Minor/Tem ra No Intertidal Flats Yes Minor No Oyster Reefs and Shell Banks No N/A N/A Palustrine Emergent and Forested Wetlands No N/A N/A Sea grass No N/A N/A Marine Areas Artificial/Manmade Reefs No N/A N/A Coral and Coral Reefs No No No Live/Hard Bottoms No N/A N/A Sa assum No N/A N/A Water Column Yes Minor/Temporary Minor/Tem ra HABITAT OF AREAS OF PARTICULAR CONCERN Area-wide Council-designated Artificial Reef Special Management Zones No N/A N/A Hermatypic (reef-forming) Coral Habitat and Reefs No N/A N/A Hard Bottoms No N/A N/A Ho Hills No N/A N/A Sa assum Habitat No N/A N/A State-designated Areas of Importance of Managed Species No N/A N/A Submerged Aquatic Vegetation No N/A N/A North Carolina No No No Big Rock No N/A N/A B ue Sound No N/A N/A Capes Fear, Lookout, and Hatteras sand shoals No N/A N/A New River No N/A N/A The Ten Fathom Ledge No N/A N/A The Point No No No BAs identified in the Fishery Management Plan Amendments of the South Auanuc Fishery Management Louncn and included in Essential Fish Habitat: New Marine Fish Habitat Mandate for Federal Agencies (February 1999) 2Adapted from USACE Environmental Assessment - Preconstruction Modifications of Authorized Improvements. Wilmington Harbor, North Carolina (February 2000) 1 5272 APPENDIX A-4.14.04 12 1 REFERENCES Coen, L. et al. 1999. Perspectives. In L. Benaka (ed.), Fish Habitat: Essential Fish i Habitat and Rehabilitation. American Fisheries Society Symposium 22, Bethesda, MD. http://www.fisheries.org Hackney, C.T., M. Posey, S. Ross, and A. Norris. 1996. A Review and Synthesis of Data on Surf Zone Fishes and Invertebrates in the South Atlantic Bight and the Potential Impacts from Beach Renourishment. For Wilmington District, US Army Corps of Engineers, Wilmington, North Carolina. Mallin, M.A., M.H. Posey, T.E. Lankford, M.R. McIver, S.H. Ensign, T.D. Alphin, M.S. Williams, M.L. Moser, and J.F. Merrit. 2001. Environmental Assessment of the Lower Cape Fear River System, 2000-2001. CMS Report Number 01-01. Center ¦i for Marine Science. University of North Carolina at Wilmington. National Marine Fisheries Service, Habitat Conservation Division, Beaufort Office, Personal Communications. Nixon, S.W. 1980. Between coastal marshes and coastal waters: a review of twenty years of speculation and research on the role of salt marshes in estuarine productivity and water chemistry. In P. Halmington and K.B. MacDonald (eds.), Estuarine and Wetland Processes. New York: Plenum, pp Noble, Liz. Oyster Reefs Provide Critical Habitat for Marine Ecosystem. URL - NC Division of Marine Fisheries. Odum, E.P. and A.A. de la Cruz. 1967. Particulate organic detritus in a Georgia salt marsh-estuarine ecosystem. In G.H. Lauff (ed.), Estuaries, Publ. No. 83. Washington, DC: Am. Assoc. Adv. Sci., pp. 383-388. Posey, M.H., C.M. Powell, and T.D. Alphin. 1996. Invertebrate indicators of renourishment effects on the beach community. In C.T. Hackney, M.H. Posey, S.W. Ross, and A.R. Norris (eds.), A Review and Synthesis of Data on Surf Zone Fishes and Invertebrates in the South Atlantic Bight and the Potential Impacts from Beach Renourishment. Prepared for Wilmington District, U.S. Corps of Engineers, Wilmington, North Carolina, pp. 10-40. Reilly, F. J., Jr. and Bellis, V. J. 1978. A Study of the Ecological Impact of Beach Nourishment with Dredged Materials on the Intertidal Zone. Sinclair, M. 1988. Marine Populations: as essay on population regulation and specification. Washington Sea Grant. University of Washington Press, Seattle. U.S. Army Corps of Engineers (USACE). 1997. Draft Reevaluation Report and Environmental Assessment for Beach Erosion Control and Hurricane Wave 5272 APPENDIX A-4.14.04 13 Protection. Brunswick County Beaches, North Carolina. Ocean Isle Beach Portion. Wilmington District, South Atlantic Division. Weinstein, M.P. 1979. Shallow marsh habitats as primary nurseries for fishes and shellfish, Cape Fear River, North Carolina. 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In n 2681 '-'P • ?'GINE.'0 2 -ea a0 -40 -zo o zo co 60 eo a0 ao -40 -20 0 20 co as e0 ao a0 -40 -zo 0 zo 40 60 e0 ao ao co -zo a 20 40 so sa a0 ao -40 -zo o 20 40 ao ao ao ao -40 -zo o m co ao ea • ao as yo -to o zo 40 60 e0 1 7S rnvlri' HORIZONTAL SCALE: I' = 100' VERTICAL SCALE: I' = 10' 60+00 0 o .1e 1 -4 ? -L I $ -12 -12 -80 -60 -40 -20 0 20 40 60 80 58+00 0 0 -L 68+00 -4 -4 -8 I-0 -80 -60 -40 -20 0 20 40 60 66+00 d -4 IITFITI 8 -0 -80 $0 -40 -20 0 20 40 60 80 -0 $ I? -12 2 -00 $0 -40 -20 0 20 40 60 80 56+00 0 0 -4 -4 -8 -6 -12 I2 -00 -60 -40 -20 0 20 40 60 80 54+00 0 -z 64+00 -L -0 -00 -60 -40 -20 0 20 40 60 80 0 0 -4 -4 -0 -0 76+00 y -4 $ $ -80 -60 -40 -20 0 20 40 60 80 74+00 -4 86+00 a. -4 1 $ I -0 -00 -60 -40 -20 0 20 40 60 80 84+00 A -4 -4 4 1 , -0 -8 -8 I -80 $0 -40 -20 0 20 40 60 80 -12 . . . -12 -80 -60 -40 -20 0 20 40 60 80 72+00 0 o -4 -4 -4 -4 -0 -0 -4 -0 -12 - -12 -12 ` ' -12 -12 -12 -80 $0 -40 -20 0 20 40 60 80 - so ' -60 -40 -20 0 ZO 40 60 so -00 -60 -40 -20 0 20 40 60 80 78+00 88+00 98+00 108+00 -4 -L -4 I -4 -4 -4 i -4 -a $ -0 -0 $ -0 -8 U.. 1. 1111 $ -1-FT-FT I -00 -60 -40 -20 0 20 40 60 80 -00 -60 -40 -20 0 20 40 60 80 -80 -60 -40 -20 0 20 40 60 80 -80 -60 -40 -20 0 20 40 60 80 HORIZONTAL SCALE: I' = 100' VERTICAL SCALE: I' = 10' U 0 Z N s W ?r r, U U U 2 ? 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F E S Sio.ti9 , ?'. o .4 SEAL r v1= 2681 9.F ill -0 62+00 82+00 -4 y ILL, I $ -0 -00 -60 -40 -20 0 20 40 60 80 96+00 -4 4 $ $ -80 -60 -40 -20 0 20 40 60 80 94+00 4 I -4 -e0 -ao -40 -20 o zo 40 a0 w 92+00 -4 -4 $ 8 -00 -60 -40 -20 0 20 40 60 So 106+00 i1 4 1 L -00 $0 -40 -20 0 20 40 60 80 104+00 -4 I -4 .I I ? $ i $ t -80 $0 -40 -20 0 20 4,0 60 80 114+00 .4 I I I i $ -B0 -60 -40 -20 0 20 40 60 80 102+00 1 i -8 $ -80 -60 -40 -20 0 20 40 60 80 112+00 -4 1 $ $ -80 -60 -40 -20 0 20 40 60 80 $ $ 90+00 I10+00 80+00 100+00 -12 -12 -4 -4 -4 11111 1 -4 Z -4 -4 -4 -00 -60 -40 -20 0 20 40 60 80 -a 70+00 -80 -60 -40 -20 0 20 40 60 80 -80 -60 -40 -20 0 20 40 60 80 -00 -60 -40 -20 0 20 40 60 80 -00 -60 -40 -20 0 20 40 60 80 0 0 124+00 -4 A -4 -A -80 -60 -40 -20 0 20 40 60 80 100 134+00 0 I ! 0 ? I ' i Mill 1 i -4 I III it i -12 -LLLL] -12 -100 -80 -60 -40 -20 0 20 40 60 80 100 144+00 -4 -4 -100 -80 -60 -40 -20 0 20 40 60 80 100 150+00 o-?-j) to III 4 1 4 I !;iiI l 11I;i -I2 -It -100 -80 -60 -40 -20 0 20 40 60 80 100 160+00 0 0 0 0 in 0 a -4 -8 -I2 0 m ¢ Q W 0 m z U z W 7 C) 0 Z ? ? J J W ~ U O O O fU/1 IAL ? N z w 0 0 12 - U -100 -00 -60 -40 -20 0 20 40 60 80 100 W 122+00 132+00 142+00 158+00 s a- omoo 148+00 -8 ?aa 0 0 0 0 0 0 m I 1 ?a mZ ? Emw 0 0 > -IZ -1z > o -4 -4 -4 -4 -4 d o c g Z i I -100 -80 -60 -40 -20 0 20 40 60 80 100 N o n g Z 1 a> -4 -4 t E N Z f -8 -e 9 -8 -8 III 11111 -8 77- 4:PIFF- 1 N J Oar W 8 -8 156+00 ?1 ?Ny ??? Z -80 -80 -40 -20 0 20 40 60 80 100 -60 -40 -20 0 20 40 60 80 100 -80 -60 -40 -20 0 20 40 60 80 100 I ! I W W N Z 1 ?/-yI Q NE ?_? /yW N -12 -80 -60 -40 -20 0 20 40 , 60 80 1002 d 1 1 130+00 140+00 Q7 `o OZ o° Y o o -8 -8 R"W ww- D 120+00 Q (? 4 y 0 0 146+00 E"{ U, >= min Z (J O -4 1 -12 -12 P-4 W 0 1 E s y 0 o E-1 a N - W -8 -8 1 -100 -80 -60 -40 -20 0 20 40 60 80 100 ^ a V W co (n -0 -8 I W U)C C> p?(n _ 0'N -0 -4 -4 1-i O O 9 p w 12-80 -60 -40 -20 0 20 40 60 80 12 -100 -80 -60 -40 -20 0 20 40 60 80 100 4 ?7? 1 -100 -80 -60 -40 -20 0 20 40 60 80 loo 154+00 U co 3 ° m U 128+00 -8 1 1 -8 s -8 W U 118+00 Q 138+00 -12 -8 d -0 w -4 0 0 -100 -80 -60 -40 -20 0 20 40 60 80 100 ? Z 0 0 2 2 Q -8 -8 d 1 -100 -60 -80 -40 -20 0 20 40 60 80 100 SFAI -It -12 -0 -0 -4 Z `,J,puw1,? -80 -60 -40 -20 0 20 40 60 e0 152+00 a?•A?',' -80 -60 -40 -20 0 20 40 60 80 100 `OF t s Sj0 . -0 -8 -4 -4 ;Q- y • •a SEAL r to 126+00 =10 2681 116+00 -100 -e0 -60 _40 -20 0 20 40 60 90 100 0 0 S ED -4 -4 -12 -12 -100 -80 -60 -40 •20 0 20 40 60 80 100 4 4 -0 M 1 -0 HORIZONTAL SCALE: I' = 100' -8 -8 VERTICAL SCALE: 1' = 10' -12 z -80 -80 -40 -20 0 20 40 60 80 -12 -12 -100 -00 -60 -LO -20 0 20 40 60 80 100 0 -4 -0 -12 168+00 176+00 192+00 0 184+00 0 -4 -4 -0 - -11 0 L 0 -I •4 -0 -0 -0 -100 -80 -60 -40 -20 0 20 4,0 60 80 100 0 -4 -0 -12 0 166+00 0 -100 -eo -eo -40 -zo 0 20 40 60 so loo -Iao -00 -60 -40 -zo 0 20 40 60 ao 100 -loo -00 -00 -46 -za o zo 40 60 80 loo -12 i -100 -80 -60 -40 -20 0 20 40 60 80 100 -12 S, H -100 40 -60 -40 -20 0 20 40 60 80 100 -100 -00 -60 -40 -20 0 20 40 60 80 100 v 164+00 -4 -4 -4 -0 -0 -a v -4 -8 170+00 0 -4 -4 -0 -A -t7 174+00 0 -4 -4 -0 0 0 -4 -4 -8 -0 u 0 y -4 -100 -80 -60 -40 -20 0 10 40 60 80 100 188+00 -100 -80 -60 -40 -20 0 20 40 60 60 100 180+00 -100 -00 -60 -40 -20 0 20 40 60 80 100 -100 -60 -60 -40 -20 0 20 40 60 80 100 -12 0 -4 -4 -0 -0 a? 0 -4 -4 -0 -0 0 -4. 0 -0 -4 -100 -00 -0 ,40 -20 0 20 40 60 80 100 -0 0 0 1 -4 -8 -0 178+00 0 4 200+00 -0 -0 -0 I -12 17UTVV 0 -4 -4 -0 -0 -12 -12 -16 0 -4 -4 -0 -8 -12 196+00 s -0 -12 16 -4 -0 -12 -100 -00 -60 -40 -20 0 20 40 60 80 100 -100 -80 -00 -40 -20 0 20 40 60 80 100 194+00 0 186+00 0 0 -4 -0 s y -0 -0 -0 -0 -Iz -1z -0 -1z -100 -00 -60 -40 -20 0 20 40 60 60 100 -100 -80 -60 -40 -20 0 20 40 60 80 100 -100 -00 -60 -40 -20 0 20 40 60 50 100 -100 -80 -00 -40 -20 0 20 40 60 80 100 -100 -00 -60 -40 -20 0 20 40 60 80 100 W O D z N a O O O O N h \ N .l = N \ a o m < w W 0 U s O z T-- Z 3 z w r o o ? V o ? o m z m z O O rn ? o: m m ".4 IO ?g •? 9 h mz`?,? o 9 m J ? NN Z Nan OA W 00 N Z F-I W ?Nrn Q 17 ? ~ I? r k W Z U ' C7Q ` Q n N "- o H W:9N 1 U E4 W. N ?a= - w00 N W ?z C7W U) Urn 0rz Z mix w V) P-0 Z? ? ?, ?UCC) m n 3.. U W U Z Q Z Lv Z Q M sm \`,,ln nnllq CA?ck .a SEAL r. N _ n : 2681 HORIZONTAL SCALE: I' = 100' VERTICAL SCALE: I' = 10' 0 _4 206+00 -0 -12 -IR 0 202+00 212+00 0 0 -4 i 8 -8 -12 -12 0 -0 -12 0 0 0 -4 4 - s -4 -0 -0 -0 -100 -00 -60 -40 -20 0 20 4( 218+00 0 1111111111111111 -100 -80 -60 -40 -20 0 20 40 60 80 10 6 -16 -100 -80 -60 -40 -20 0 20 40 60 80 100 208+00 0 0 -4 -4 i -0 -0 -0 12 -12 -12 11 1 11 1 1 11 1 I I I I I I I I I I II I -100 -80 -60 -40 -20 0 20 40 60 80 -11001 -801 -60 -40 -20 0 20 40 60 80 100 -440 -20 0 20 40 60 80 100 210+00 qn/ Lnn 0 -4 -0 -12 -100 -00 -60 -40 -20 0 20 40 60 -100 •80 -60 -40 -20 0 20 40 60 0 216+00 224+00 0 i -0 -0 •lz -12 JA 0 -4 y 228+00 -4 -100 -00 -60 -40 -20 0 20 40 60 80 226+00 -4 -4 -4 -100 -80 -60 -40 -20 0 20 41 -4 -0 -0 -100 -80 -60 -40 -20 0 20 40 60 80 100 -100 -80 -60 -40 -20 0 20 40 60 80 100 -100 -80 -60 -40 -20 0 20 40 60 80 222+00 0 -4 -0 214+00 0 0 -4 -4 -0 -8 -100 -80 -60 Z0 -20 0 20 40 60 80 -100 -80 -60 -40 -20 0 20 40 60 -100 -60 -60 -40 -20 0 20 40 60 80 100 HORIZONTAL SCALE: IA = 100' VERTICAL SCALE: I' = 10' W U U 0 U O U z 3: O N N a S 127 J O N < m V Q W 0 a m v E °zN ZZ L W Z F a o o aU o U V V) z z w f O N O U _ > W ?i12 Oa q .? qy ? \ N moo 3al m (`, W II m? $? m J 7N0 S i a (n r i fu t U n S Z Noon W CD R+?ro ? N Z N L , M E-1 Z N p ? Z° J - z N 0 w W z ? Z Q V) da mo m rn v F -?N 1 R'+ 14 X I W 00 fW a M cf) U? ?n Z Qj LL1 N 1-4 (D L)Ucc) W U Z Q Z W I- Z Nr a ,1 :Q- 0 a 2681 L. ?. v) " ?'?GINE?' OP` ?E tJ ID?'? . 220+00 -4 VARIES V 10 I 0 APPROXIMATE SEAWARD EDGE OF EXIST. BLDG FOUNDATION PIPE ALONG TOP OF FILL FILL CONFINEMENT DIKE MATERIAL RE UIRED FOR BUILDING DIKES SH LL BE EXCAVATED FROM THE SEAWARD SI E OF THE PR POSEI DIKE LINE & SHALL EX ND 200' MIN MUM AHEAD OF DISCHARGE DINT GGESTEID MAX. SEAWARD ITOE OF BER LOCATE OF DIKE NI U-) U, N M TYPICAL BEACH FILL CROSS-SECTION HORIZONTAL SCALE: I' = 50' VERTICAL SCALE: I° = 51 a Co Lo "n uj O (V M 0+00 1+00 2+00 *00 2.05 MHW 0.00 MSL -1.54 MLLW INDICATES GROUND/ BOTTOM ELEVAT10N INDICATES DIST. FROM BASELINE 0+00 2.05 MHW 0.00 MSL 1.54 MLLW W U U O 2 N 1^ \ n J o N a u m < w - 0 Ow m °v CIO Z M = Ili _ W Q Q C . U d Q I U 5r 0 0 o In w O Ill 125' MIN. r _ EXIST. s m I PIER p r= o? EXIST. GRADE VARIES boo O.OOMLW } d mm q g E N 300 'Ww r I j 10 m? o E UI co / N a= ? m rn Z ru r 0 W > 1G' o E ??_< 0 ?2 -9.0 MLW 1 DREDGE TEMPLATE oo? o" J w z ?-I W ?N? Q v TYPICAL CHANNEL SECTION c o? V Z HORIZONTAL SCALE: I" = 501 z R i : %- Z O VERTICAL SCALE: I' = 101 W WU ? Q F , . mo V) Z 6i N F A I N W a = - LLJ CO V) V) W ?zm U' w 0 to o H z LL (" , ( O J a 0 ? 00 ? (J to Lv U CL Z Q Z W t Nr Z Q :m sm `111111111111f1ff ,$?'o CqR?/ f , ?ofESSjp.ti9'-: a SEAL ,-. (n n 2681 '?'p •'NGINE?'• ??. SnElDr??X ?. ANTICIPATED CHANGE AFTER SEVERAL TIDE CYCLES HORIZONTAL SCALE: 10 = 501 VERTICAL SCALE: I' = 5' co W W Q W V Oct 4 Q Lo -9 Z Q FIGURE "8" BEACH HOMEOWNERS ASSOCIATION FIGURE EIGHT ISLAND, NORTH CAROLINA Property Owner Immediately North of Mason Inlet Property Owners South of Inlet George Henry Hutaff Tract No. 2 c/o David Ward P.O.Box 867 New Bern, NC 28563 (252) 633-1000 All property owners on Figure Eight South of the Causeway will be notified By Certified Mail. Note: Figure Eight Island property owners south of the Causeway will be notified by Certified Mail. A list will be provided, if requested. n l I DIVISION OF COASTAL MANAGEMENT ADJACENT RIPARIAN PROPERTY OWNER NOTIFICATION/WAIVER FORM Name of Individual Applying For Permit: Address of Property: (Lot or Street n, Street or Road, City & County) I hereby certify that I own property adjacent to the above- referenced property. The individual applying for this permit has described to me as shown on.the attached drawing.-the-development they are proposing. A description or drawing, with dimensions, should be provided with this letter. I have no objections to this proposal. If you have objections to what is being proposed, please write the Division of Coastal ManaGement, 127 Cardinal Drive Extension, Wilmington, North Carolina, 28405 or call 910 395-3900 within 10 days of receipt of this notice. No response is considered the same as no objection if you have been notified by Certified Mail I 1 Signature Date • r ' Print Name LD F-= Telephone Number With Area Code u DIVISION OF COASTAL MANAGEMENT ADJACENT RIPARIAN PROPERTY OWNER NOTIFICATION/WAIVER FORM ' Name of Individual Applying For Permit: Address of Property: (Lot or Street n, Street or Road, City & County) I hereby certify that I own property adjacent to the above- referenced property. The individual applying for this permit has described to me as shown on -the attached drawing.-the development they are proposing. A description or drawing, with dimensions, should be provided with this letter. I have no objections to this proposal. If you have objections to what is being proposed, please write the Division of Coastal ManaGement, 127 Cardinal Drive Extension,- Wilmington, North Carolina, 28405 or call 910 395-3900 within 10 days of receipt of this notice. No response is considered the same as no objection if you have been notified by Certified Mail 1 Signature Print Name Telephone N er With Area Code Date YDE=""F:1 . I r L W V Z Q V U. 0 W W Q co • k Z L1. Q 1 STATEMENT OF COMPLIANCE II' WITH NORTH CAROLINA ENVIRONMENTAL POLICY ACT The Figure "8" Beach Homeowners' Association proposes that this project is exempted from the requirement to prepare an environmental assessment under the North Carolina Environmental Policy Act because the proposed maintenance of an existing navigation channel complies with the general and specific use standards under 15A NCAC 7H and, therefore, qualifies as a "non-major activity" under 15A NCAC 1C.0504 (3) (f) and .0504 (5) (j). I' CO) Z rz CO) W CO) LL. ct 0 W cr Z a. Q ' M6 ENGINEERING CONSULTING SERVICES, LTD. Geotechnical • Construction Materials • Environmental Mr, David Kellam ' Figure Eight Beach Homeowners Association 15 Bridge Road Wilmington, NC 28411 ' RE: Report of Field and Laboratory Testing Figure Eight Island Wilmington, North Carolina Dear Mr. Kellam: April 5, 2004 ECS, Ltd. Project No. 22.10835 Engineering Consulting Services, Ltd. (ECS) has completed the subsurface exploration and laboratory testing for southern Figure Eight Island and Banks Channel in Wilmington, North Carolina. ECS obtained soil samples from twenty selected locations in the sound side channel and in four selected test locations on the beach. The channel locations were denoted as S-1 through S-20. The beach locations were denoted as B-1 through B-4. The channel soil samples were obtained at the bottom of the channel at the selected locations and at an approximate depth of nine feet below the mean low water level. The beach samples were obtained at the surface at the mid-tide level of the beach. This report presents the results of our laboratory tests, We appreciate the opportunity to provide laboratory services to you on this project. Should you have any questions, please contact us at (910)-686-9114. Respectfully, ENGINEERING CONSULTING SERVICES, LTD. Winslow Goins, E.I. Staff Engineer Q\ , - M?? Walid M. Sobh, P.E. Principal Engineer NC License No. 22983 P.O. Box 10434, Wilmington, NC 28404 • (910) 686-9114 • FAX (910) 686-9666 • Jacksonville, NC (910) 355-2727 • www.ecslimited.com Aberdeen, MD* • Atlanta, GA • Austin, TX • Baltimore, MD • Chantilly, VA • Charlotte, NC • Chicago, IL • Cornelia, CA* • Dallas, TX • Danville, VA* • Frederick, MD • Fredericksburg, VA Greensboro, NC • Greenville, SC • Norfolk, VA • Orlando, FL • Research Triangle Park, NC • Richmond, VA • Roanoke, VA • San Antonio, TX • Williamsburg, VA- Wilmington, NC • Winchester, VA *Testing Services Only Report of Field and Laboratory Testing Figure Eight Island Wilmington, North Carolina ECS, Ltd. Project No.: 22.10835 1.0 PROJECT OVERVIEW 1.1 Project Description and Scope of Work This report presents the results of our field soil sampling and laboratory tests for the Figure Eight Island located in Wilmington, North Carolina. The Project Location Diagram in the Appendix A shows the location of the site and the approximate location of the soil samples obtained. Our exploration consisted of obtaining soil samples in the channel and on the beach at twenty four selected locations. The sample locations were selected by Criser and Troutman Consulting Engineers. The soil samples from the channel were obtained at the bottom of the channel and at a depth approximately nine feet below mean low water. The soil samples from the beach were obtained at the surface at the mid-tide level of the beach. In conjunction with the field sampling, laboratory testing was performed to characterize the soil samples obtained from the sampling operations. The purpose of this investigation is to visually classify the soil samples and to perform grain size analysis for each sample. 2.0 FIELD EXPLORATION 2.1 Exploration Procedures 2.1.1 Field Testing The soil samples were obtained using a barge mounted rotary drilling rig, which utilized various cutting bits to advance the boreholes to collect the samples at the designated depths. 3.0 EXPLORATION RESULTS 3.1 Site Conditions The channel is on the sound side of Figure Eight Island and south of the bridge from the mainland. 3.2 Soil Conditions and Description During our investigation at the twenty four selected locations, we encountered typical native soils in each of the samples at this site. The subsurface soils consisted of silty sands, sandy silts, and clean sands. The depths tested vary from location to location due to the natural contours of the bottom of the channel and due to changes in the tide height that occurred during sampling operations. Based on site conditions, we were able to obtain 30 samples from the channel locations instead of the requested 40 samples. The sample depths were adjusted to account for variations in the tide level during sampling operations. Report of Field and Laboratory Testing Figure Eight Island Wilmington, North Carolina ECS, Ltd. Project No.: 22.10835 4.0 LABORATORY TESTING 4.1 Laboratory Testing Program ¦ The laboratory testing program consisted of performing moisture content tests and grain size analysis on the soil samples. All data obtained from the laboratory tests are included in Appendix ' B and Appendix C of this report. The soil samples collected for this investigation will be retained at our laboratory for a period of ' sixty (60) days, after which they will be discarded unless other instructions are received as to their disposition. 4.2 Visual Classification 7 An experienced soil engineer classified each soil sample collected based on the texture and plasticity in accordance with the Unified Soil Classification System. A brief explanation of the USCS is included with this report and provided on the grain size graphs. 4.3 Laboratory Testing Methods 4.3.1 Grain Size Analysis Tests The sieve analysis is performed by placing a dry soil sample, of known weight in a series of sieves which is moved in a lateral and vertical motion accompanied by jarring to keep the sample continuously moving over the sieves. The amount of soil retained on each sieve is recorded and plotted on a graph with the weight retained on a given sieve on the y-axis, and the sieve opening on the x-axis. The following sieves were used, as requested by Criser and Troutman, to determine the distribution of particle sizes of the soil samples: #4, #10, #20, #40, #60, #100, #140, and # 200. SUMMARY OF LABORATORY TEST RESULTS Beach Samples Mid Tid S l Gray Sands e amp es B-1, B-2, B-3, B-4 Channel Sam ples Gray Sands with shell Brown Sands Gray Silty Sands Gray Silts First Sample (S-1) S-1, S-2, S-3, S-7, S-5 S-6 S-10 S-8, S-12, S-14, S-20 (Bottom of Channel) S-13, S-16 , , S-15, S-17, S-19 Second Sample (S-2) S-1, S-2, S-3, S-6, S-11 S-9 S-11 S-17, (Elevation -9 MLW) S-7, S-10, S-18 , S-18 2 i i i i i i APPENDIX B LABORATORY TEST RESULTS FOR THE BEACH SAMPLES III Unified Soil Classification System (ASTM Designation D-2487) Major Division Group Symbol Typical Names Classification Criteria ° GW Well-graded gravels and gravel- Cu = D60fD 10 Greater than 4 .N sand mixtures, little or no fines CZ = (D30)2/(DIOxD60) Between I and 3 ?v gti w z GP Poorly graded gravels and gravel- w w Not meeting both criteria for GW N e N e O sand mixtures, little or no fines w O °i ri .N o v >°? w1 3 y o GM Silty gravels, gravel-sand-silt a U Atterberg limits plot below "A" line or P mixtures c plasticity index less than 4 0 0 o g 3 o g b o 19 GC Clayey gravels, gravel-sand-clay N Atterberg limits plot above "A" line v mixtures and plasticity index greater than 7 d C SW Well-graded sands and gravelly D o ° > 0 N .y o .? C„ = D6P/DIO Greater than 6 o .> sands, little or no fines o o ° o CZ = (D30)2/(DIOxD60) Between 1 and 3 U o ° 07- z y SP Poorly graded sands and gravelly N ro N Not meeting both criteria for SW ro o sands, little or no fines ?n SM Silt d d ilt i t '\^ N Atterberg limits plot below "A" line or g y san s, san -s m x ures o plasticity index less than 4 SC Clayey sands sand-clay mixtures a 0 Atterberg limits plot above "A" line , and plasticity index greater than 7 ML Inorganic silts, very fine sands, Note: U-line represents approximate upper limit of LL and PI combinations N rock flour, silty or clayey fine for natura l soils (empircally determined). ASTM-D24137. o° sands 80 - rn N O O " z >, a d CL Inorganic clays of low to medium 70 "U" LINE a . r o a. b plasticity, gravelly clays, sandy a 60 A" LINE Q o clays, silty clays, lean clays W ?.' a -:a =w w OL Organic silts and organic silty S2 40 CH;04 o clays of low plasticity N ,' MH aON e a 30 ° MH Inorganic silts, micaceous or C diatomaceous fine sands or silts, 20 L a OL o CD E. elastic silts w 0 L ca :Z CH Inorganic clays of high plasticitiy, o m ML aOL fat clays 0 10 20 x 40 50 eo 70 m 00 too 110 V) LIQUID LIMIT, LL OH Organic clays of medium to high Plasticity ch art for the classification of fine-grained soils. plasticity Tests made on fraction finer than No. 40 sieve Highly organic soils Pt Peat, muck and other highly Fibrous organic matter; will organic soils char, burn, or glow UNIFIED SOIL CLASSIFICATION S?T STEM i JUNE 2003 ENGINEERING CONSULTING SERVICES, LTD. ,It 0 W) o M N 00 O ry M 0 0 ti U7 U W a q 0 0 0 N O 4t 0 0 C) ...i ?o It a v .? 6i tl? 00 M M r, I I ------- ------ ----- --- ----- ----- ---- ----- ---- ------ ------ ----- ---- -- - -- -- - - - - - - - - - -- - - - - - L - - - - - ----- I _ - - -- - - - - ------ i ----- ? --- ---- -. - - - - - - _- . - ------ - --..-- I{I ------ -- -_- - - -- - ----- ------ ------ I ------ ------ : 1 - I I - t _ o 0 O u 1 da o ? CIJ a w i. V) z as cn 0 1_1 II II ? a a 0 ,N O o o II II ? U o A ? o a vi U b u 0O °' vi 000 0 o ov o 0 0 0 -" c cz En aurssvd /uddadd 0 v, O M N ? N M .D O V) U W z 0 Q 0 0 O N O 0 0 J .,..? `O ~ O p .? p) O N 4t N rr?? o 0 00 M v f M ?n- -00 i -- - - - ---- - -- ----- ? - ------ - -- ------ - -- ------ ---- _ ------ --- J- ------ ----- ------ ----- ----- ----- ----- --- --- -_- _-- ----- t ----- --- -- ------ I ------------ -- - ------ ------ -- - ------ ----- ------ ------ I _ o 0 O Q U IT, PQ on a a ? z ? ti r it II p" a , o o? ,N V) C, O? O O II II U U o A ~ ? a > IICd V O U b 0 0 0 0 0 0 0 0 0 0 C7, oo r h M N vuraSvd ludo-Idd 0 Vl o M N 00 ON O fV ~ M -0 U En U W Q 0 Q m 0 0 0 - O 0 0 ? o rn ? CCZ N ? •? Uj ? ? o I 0 6i Eli f 0 M M 0n ? - I ? I L ? - -- ----- - f? ----- ----- ----- ----- --- ------ ------ ------ --- -- ------ ------ ------ ------ ------ I ----- ----- ----- ----- ----- I -- --- - ----- ----- - i ? I I I ? - I r, _ o 0 0 b a O b ? ou w a aai ci c Q E r: z o ti 0 - 0 r-, N II II ? ' o o? O ON O O II II U U 0 7A ro F' 0 a {ti U y -cs 00 -°' V] 0 0 0 C7, 00 0 0 0 0 V) auis'svd ?ud? add ,It O ? O O N M O ti U W 0 q 0 b 0 0 N - O O 0 0 y i••I p?j O •r?? N ? Vl ? 0 00 M `v M 0? i I i I ----- -----? I----- - -- ----- ---, ---- ----- - - ---- ----- -- ----- ----- ------ ------ ------ ---- -- - - __ _ - # _ - ? __ ------ ---- 7- - - _ -- I ----- - --- --- I - ------ O O O b q of a a0 rr -d o ? a on a. ? `n a z ? cn ti 'o N tl O ? n n U U o ~ a > ca 0 b g o CD O O O o 0 0 vulss.Svd luddddd O N APPENDIX C LABORATORY RESULTS FOR THE CHANNEL SAMPLES u 11 t Unified Soil Classification System (ASTM Designation D-2487) Major Division Group Symbol Typical Names Classification Criteria ° GW Well-graded gravels and gravel- Co = D60/DI0 Greater than 4 .N sand mixtures, little or no fines CZ = (D30)2/(DIOxD60) Between 1 and 3 d a 0 N w z GP Poorly graded gravels and gravel- w :11 Not meeting both criteria for GW N ° sand mixtures, little or no fines ta" v .N o 63 OA V r?i? C) (7 g .Ei GM Silty gravels, gravel-sand-silt ? v Atterberg limits plot below "A" line or ° mixtures c7 c 7 :c -TJ plasticity index less than 4 0 0 o p o g " " o 4 GC Clayey gravels, gravel-sand-clay 0 Atterberg limits plot above line A 1 mixtures W U and plasticity index greater than 7 Cd „ SW Well-graded sands and gravelly ° o ° > a'? E? o N Co = D601DIO Greater than 6 o > little or no fines sands o C> ° °o C. = (D30)2/(DIOxD60) Between 1 and 3 V O . ° , .U 0 Z N ° z° SP Poorly graded sands and gravelly '7 N z Not meeting both criteria for SW C sands, little or no fines a a ° c U `?^ N Atterberg limits plot below "A" line or °o SM Silty sands, sand-silt mixtures o plasticity index less than 4 SC Clayey sands sand-clay mixtures Atterberg limits plot above "A" line , and plasticity index greater than 7 > ML Inorganic silts, very fine sands, Note: U-line represents approximate upper limit of LL and PI combinations N rock flour, silty or clayey fine for natura l soils (empircally determined). ASTM-D2487. °o sands 80 N N • z fn 11 L norganic clays of low to medium 70 r "U" INE ? r ? (.r .9 0 , o plasticity, gravelly clays, sandy a 50 "A" LINE ? h Id ° o o clays, silty clays, lean clays w ?.' V. OL Organic silts and organic silty y 40 ?r' CN aOH o clays of low plasticity y ?? MH aOH a? ° MH Inorganic silts, micaceous or ?' diatomaceous fine sands or silts, zo CLaOL r elastic silts to ? ' _ '0 CL A " O CH Inorganic clays of high plasticitiy 0 - ML a OL C ' N a N , fat clays 0 10 20 30 40 50 e0 70 so 90 100 110 LIQUID UM IT, LL OH Organic clays of medium to high Plasticity chart for the classification of fine-grained soils. plasticity Tests made on fraction finer than No. 40 sieve High ly organic soils Pt Peat, muck and other highly Fibrous organic matter; will organic soils char, bum, or glow UNIFIED SOIL CLASSIFICATION SYSTEM JUNE 2003 ENGINEERING CONSULTING SERVICES, LTD. ,I- C) ?n o M N O N M O r-y U W a Q o? 0 O O N - O O O r/j O .ry ?D r••I O F•I 4) y o •rrr^?? N rN VJ N •ry v] V r, 0 00 M -- ----- ------ ----- ------ --- ; ---- I - - ------- ----- -------- -- ----- ----- ----- ----- i ----- F----- I ----- ----- ----- C:) 00 O r- VI O O IO O O O euls'avd Md?-fdd r., _ o 0 O b O h FBI V W b ? bA z Cd o ti a ? 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U M H d0 In o M N 00 O\ O ry M ,D O ti U W CS Q N N O x 0 0 N O 0 0 0 •r.w ? P;; O C? N?N N O r1 p) o Tvw, ? It 65, 00 M M ?1 ?-?1liII 0 0 O 'O C e? y ? U w O\ O ,cd ? R. aAi H w ~ C/) ?Q z ? o ti 0 kf? O v ,N Y ? z ? N N II ii U U 0 x a O a U ? b 0 00 0 0000 ° ° 0 C> ° 0 0 0 0 o F m C14 cn eurasud TueJadd Oct o?-(-F7 KO IETLANDS / 401 GROUP JUL 2 1. 2004 TER QUALITY SECTION ® North Carolina Wildlife Resources Commission Charles R. Fullwood, Executive Director MEMORANDUM TO: Doug Huggett Division of Coastal Management FROM: Shannon Deaton, Program Manager Habitat Conservation Program DATE: July 15, 2004 SUBJECT: CAMA/Dredge & Fill Permit Application for Figure 8 Island HOA, Inc., Banks Channel and southern lagoons maintenance dredging with application of material to the southern ocean beach of Figure 8 Island, New Hanover County, North Carolina. The North Carolina Wildlife Resources Commission has reviewed the project for impacts to wildlife and fishery resources. Our comments are provided in accordance with provisions of the Fish and Wildlife Coordination Act (48 Stat. 401, as amended; 16 U.S.C. 661 et seq.) and the Coastal Area Management Act (G.S. 113A-100 through I I3A-128). The applicants propose to maintenance dredge previously authorized areas in Banks Channel and the southern Figure 8 lagoons to improve navigation. Also proposed is new dredging of a connector channel to the AIWW. All sediments would be pumped to the island's southern beach for renourishment. Work would occur between November 15 and March 31 to avoid peak biological activity, including the sea turtle nesting season. Waters to be dredged are classified SA - Outstanding Resource Waters and open to shellfish harvest. The ocean is classified SB. A total of 56.96 acres would be dredged, including direct impacts to 1.3 acres of intertidal sand flats. Direct impacts to this important waterbird resting and foraging habitat appear to have been reduced by limiting dredging to the deeper east side of Banks Channel. There is some question as to whether sediments to be pumped to the ocean beach are beach compatible. Sediments from the lagoons are finer than ocean beach sand and mechanical mixing (using bulldozers) is proposed if "extremely fine sediments" (Appendix 5A) are encountered. Use of Mailing Address: Division of Inland Fisheries • 1721 Mail Service Center • Raleigh, NC 27699-1721 Telephone: (919) 733-3633 ext. 281 • Fax: (919) 715-7643 • . Fig. 8 HOA Banks Chan. Dredging 2 07/19/04 incompatible material on the beach may increase recovery time of beach invertebrate populations, thus affecting the quality and quantity of available forage for waterbirds and surf zone fishes. Quality of sea turtle nesting habitat could also be affected. Our greatest concern, however, involves the secondary interrelated and likely causal hydrologic and geologic relationships between Banks Channel dredging, Masons Creek shoaling, and Masons Inlet migration. In our review of the Masons Inlet Relocation Environmental Assessment in which Masons Creek was to be dredged, we anticipated that accelerated shoaling of Banks Channel would result. Sure enough, now that Masons Creek has been dredged and Masons Inlet relocated, we are presented with this project due to "deposited sand set into motion by hurricane activity and the relocation of Masons Inlet" (Appendix 5A). In our opinion, it is becoming increasing clear that the dredging of Banks Channel and the relocation of Masons Inlet are inextricably linked and that activities in one sub-site affect the hydrology, geology, and habitats of the other. Although the applicants' desires to separate projects and permits are understandable, failure to adequately assess this project's impacts on the Masons Inlet Relocation project to us makes this an incomplete application. Based on these concerns, we recommend the following project modifications. 1. If incompatible material (based on grain size and color) is used on the ocean beach, mixed or not, the project will include monitoring of beach invertebrate populations. Pre- and post-project comparisons of these populations as well as comparisons to other nearby beach nourishment projects should be made and reported to the review agencies. 2. A quantitative assessment of hydrologic and geologic changes resulting from the Banks Channel project in com6ination with Masons Inlet maintenance activities will be made to provide a complete estimate of changes in intertidal habitat area. Losses of intertidal habitat should be mitigated. Also, we suggest that past bird monitoring along Banks Channel associated with either the Masons Inlet Relocation or Figure Eight Island be reported and discussed in relation to intertidal habitat loss. 3. Due to the interconnectedness of Banks Channel dredging to relocation and maintenance of Masons Inlet, a publicly funded effort, and the overall scope of the project, an environmental assessment (EA) will be prepared. The CAMA dredge and fill permit application should be held in abeyance until the EA has been circulated for review. Thank you for the opportunity to comment on this application. If you have questions, please call Bennett Wynne at (252) 522-9736. Cc: Howard Hall, USFWS Ron Sechler, NMFS Henry Wicker, USACE David Allen, NCWRC Fritz Rohde, NCDMF John Dorney, NCDWQ qF- WETLANDS/ 401 GROUP vl PUBLIC NOTICE AUG 2 7 2004 DEPARTMENT OF THE ARMY WATER QUALITY SEGTIGIq Wilmington District, Corps of Engineers Post Office Box 1890 Wilmington, North Carolina 28402-1890 (http://www.saw.usace.army.mil/wetlands/regtour.htm) Action ID No. 200400895 August 23, 2004 PUBLIC NOTICE Figure Eight Beach Homeowners Association, 15 Bridge Road, Wilmington, North Carolina 28411 has applied for a Department of the Army (DA) permit TO COMPLETE MAINTENANCE DREDGING OF PREVIOUSLY AUTHORIZED AREAS IN BANKS CHANNEL AND THE WATERWAY CONNECTOR CHANNEL, AND ALSO, COMPLETE MAINTENANCE DREDGING IN THE EXISTING LAGOON AND CANAL AREAS. ALL EXCAVATED SEDIMENTS WOULD BE UTILIZED FOR NOURISHMENT OF THE BEACHFRONT (10,000 LF) AT THE SOUTH END OF FIGURE EIGHT ISLAND, NEW HANOVER COUNTY, NORTH CAROLINA. Please review the attachments provided by the applicant and the North Carolina Division of Coastal Management (LAMA Major application) for a description of the site and the proposed project. Plans submitted with the application show the proposed limits of the work. The purpose of the channel maintenance is to enable the re-use of shoaled areas and increase and improve navigation channels. The beach renourishment will enhance recreational usage of the beach and help counter erosion processes. Plans showing the work are included with this public notice. The applicant has determined that the proposed work is consistent with the North Carolina Coastal Zone Management Plan and has submitted this determination to the North Carolina Division of Coastal Management (NCDCM) for their review and concurrence. This proposal shall be reviewed for the applicability of other actions by North Carolina agencies such as: a. The issuance of a Water Quality Certification under Section 401 of the Clean Water Act by the North Carolina Division of Water Quality (NCDWQ). b. The issuance of a permit to dredge and/or fill under North Carolina General Statute 113-229 by the North Carolina Division of Coastal Management (NCDCM). c. The issuance of a permit under the North Carolina Coastal Area Management Act (LAMA) by the North Carolina Division of Coastal Management (NCDCM) or their delegates. d. The issuance of an easement to fill or otherwise occupy State-owned submerged land under North Carolina General Statute 143-341(4), 146-6, 146-11, and 146-12 by the North Carolina Department of Administration (NCDA) and the North Carolina Council of State. e. The approval of an Erosion and Sedimentation Control Plan by the Land Quality Section, North Carolina Division of Land Resources (NCDLR), pursuant to the State Sedimentation Pollution Control Act of 1973 (NC G.S. 113 A-50-66). The requested Department of the Army (DA) permit will be denied if any required State or local authorization and/or certification are denied. No DA permit will be issued until a State coordinated viewpoint is received and reviewed by this agency. Recipients of this notice are encouraged to furnish comments on factors of concern represented by the above agencies directly to the respective agency, with a copy furnished to the Corps of Engineers. This notice initiates the Essential Fish Habitat (EFH) consultation requirements of the Magnuson-Stevens Fishery Conservation and Management Act. The District Engineer's initial determination is that the proposed project would not adversely impact EFH or associated fisheries managed by the South Atlantic or Mid Atlantic Fishery Management Councils or the National Marine Fisheries Service. This application is being considered pursuant to Section 404 of the Clean Water Act and Section 10 of the Rivers and Harbor Act of 1899 (33 U.S.C. 403). Any person may request, in writing within the comment period specified in the notice, that a public hearing be held to consider this application. Requests for public hearing shall state, with particularity, the reasons for holding a public hearing. The District Engineer has consulted the latest published version of the National Register of Historic Places for the presence or absence of registered properties, or properties listed as being eligible for inclusion therein, and this site is not registered property or property listed as being eligible for inclusion in the Register. Consultation of the National Register is the extent of cultural resource investigations by the District Engineer, and he is otherwise unaware of the presence of such resources. Presently, unknown archeological, scientific, prehistorical, or historical data may be lost or destroyed by work under the requested permit. The District Engineer, based on available information, is not aware that the proposed activity will affect species, or their critical habitat, designated as endangered or threatened pursuant to the Endangered Species Act of 1973. The decision, whether to issue a permit, will be based on an evaluation of the probable impacts, including cumulative impacts, of the proposed activity and its intended use on the public interest. Evaluation of the probable impacts that the proposed activity may have on the public interest requires a careful weighing of all those factors that become relevant in each particular case. The benefits that may be expected to accrue from the proposal must be balanced against its foreseeable detriments. The decision whether to authorize a proposal, and if so the conditions under which it will be allowed to occur, are therefore decided by the outcome of the general balancing process. 2 That decision should reflect the national concern for both protection and use of important resources. All factors that may be relevant to the proposal must be considered including the cumulative effects of it. Among those are conservation, economics, aesthetics, general environmental concerns, wetlands, cultural values, fish and wildlife values, flood hazards and flood plain values (according to Executive Order 11988), land use, navigation, shore erosion and accretion, recreation, water supply and conservation, water quality, energy needs, safety, food and fiber production, mineral needs, considerations of property ownership, and, in general, the needs and welfare of the people. For activities involving the placement of dredged or fill materials in waters of the United States, a permit will be denied if the discharge that would be authorized would not comply with the Environmental Protection Agency's 404(b)(1) guidelines. Subject to the preceding sentence and any other applicable guidelines or criteria, a permit will be granted unless the District Engineer decides that it would be contrary to the public interest. The Corps of Engineers is soliciting comments from the public; Federal, State and local agencies and officials; Indian Tribes and other interested parties to consider and evaluate the impacts of this proposed activity. Any comments received will be considered by the Corps of Engineers to decide whether to issue, modify, condition or deny a permit for this proposal. To make this decision, comments are used to assess impacts on endangered species, historic properties, water quality, general environmental effects and the other public interest factors listed above. Comments are used in the preparation of an Environmental Assessment (EA) and/or an Environmental Impact Statement (EIS) pursuant to the National Environmental Policy Act (NEPA). Comments are also used to decide the need for a public hearing and to decide the public interest of the proposed activity. Written comments pertinent to the proposed work, as outlined above, will be received in this office, Attention: Mr. Henry Wicker, until 4:15 p.m. September 23, 2004, or telephone (910) 251-4930. I DIVISION OF COASTAL MANAGEMEN ECL?ff?UI?Lj) - _FIELD INVESTIGATION REPORT 1. APPLICANT'S NAME: Figure 8 Beach Homeowners Assoc., Inc ULA`no l : 2. LOCATION OF PROJECT SITE: Figure 8 Island, adjacent to the Atlantic Ocean and Middle Sound, between Rich and Masons Inlets, in northeast New Hanover County. Photo Index ? :2A- ,'hatos 310-312 1995: 24 Photos 292-296 1989:-4 176 Photos 15-1 L State 'Plane Coordinates- X: 2365200 Y:018200 Rover file: S-051119A 4. PROCESSING PROCEDURE: Application Received - 4/26/04 Office - Wilmington 5. SITE DESCRIPTION: (A) Local Land Use Plan - New Hanover Co. Land Classification From LUP - Conservation (B) AEC(s) Involved: EW, PT, OH Water Dependent: Yes (D) Intended Use: Private/Community (E) Wastewater Treatment: Existing - Individual septic tanks Planned - N/A (F) Type of Structures: Existing - Single-family residences Planned - N/A (G) Estimated Annual Rate of Erosion: 2 ft./yr. Source - 1998 LTAASCR 6. HABITAT DESCRIPTION: [AREA] n-P'Pn(TRTI FTr T PT-1 nrrT-7T7D (A) Vegetated Wetlands (B) Non-Vegetated Wetlands - Subtidal shallow bottom 2,481,250 sf Intertidal beach surf zone 110002000 sf (C) Other - Upper beach area 1,000,000 sf (D) Total Area Disturbed: 4,481,250 sf (102.9 acres) (E) Primary Nursery Area: No (F) Water Classification: SA-ORW Open: YES 7. PROJECT SUMMARY: The applicants propose to complete maintenance dredging ofpreviously authorized areas in Banks Channel and the waterway connector channel, and also, complete maintenance dredging in the existing lagoon and canal areas. All of the excavated sediments would be utilized for renourishment of the beachfront (10,000 LF) at the south end of Figure 8 Island. Figure 8 Homeowners Assoc., Inc. Page2 8. PROJECT DESCRIPTION Figure 8 Island is a private residential barrier island located in the northeast corner of New Hanover County, adjacent to the Atlantic Ocean and Middle Sound, between Mason and Rich Inlets. The island is accessed - °from=the mainl'arrd at-the end of Edgewater Iub Road (SR-1402), by-a priat bridge a e _tlie ?L11anti .Intracoastal. Waterivay (AIWW'and an earthen--eau e ra which tray ersesMiddl S6&i& In the project area, the NC Division`of Wafer Quality cIassi$es the waters of the Atlantic ocean as-Sg: Tfie and the as SA-ORWZ and they _ - J Waferway are designated as Primary in the area of the proposed maintenance dredging, the open water areas of Banks Channel, the finger canals and the waterway connection channel are not designated as PNAs. Over the years, the Figure 8 Beach Homeowners Association have obtained a number of State permits for channel maintenance, beach renourishment, and beach bulldozing. In-1989, the Association initiated the development of a long range plan that addressed channel maintenance and beach restoration on an island- wide basis. The resulting State permits, #26-92 and #21-93, authorized channel maintenance projects at the north and south ends of the island, both with beach deposition of excavated materials. This beach reconstruction project was completed in 1993. The hurricanes of the mid to late 1990's caused extensive damage and created serious erosion of the beach on Figure 8 Island. In March 1998, the applicants were issued State Permit #29-98 authorizing the maintenance dredging of Banks Channel; with beach disposal of the excavated material (previously State Permit #26-92). Subsequently, in 1999, the applicants received State Permit # 12-99 to excavate an existing USACOE spoil disposal island adjacent to the AIWW, and pump the material to the beach at the middle of Figure 8 Island. In 2001, Permit #6-01 was issued to the applicants to dredge a portion of Nixon Channel and renourish the beach at the north end of Figure 8 Island (previously State Permit #21-93). In addition to their own permits, the beach on the southern end of Figure 8 Island was a permitted disposal area for a portion of the beach compatible sands generated from New Hanover County's Mason Inlet Relocation Project (State Permit # 151-01). That renourishment activity was completed in 2002, however, future maintenance dredging associated with that project may again propose to utilize the south end of Figure 8 Island as a disposal area for beach compatible spoils material. The current application proposes to re-establish safe navigation by completing maintenance dredging of the previously authorized channels (State Permits #26-92 & #29-98) and add the four existing (4) canal/lagoons to the area to be maintained. The lagoon and canal systems were originally constructed during the early development of the island and have not needed large-scale maintenance dredging in the past. In fact, except for the shoaling of the entrances to the lagoons (Sounds Point and Salt Meadow), very little dredging is proposed in the lagoon/canal areas. The applicant has included them with this application in an effort to present a comprehensive picture of the island's present and future maintenance dredging needs to be able to maintain existing navigational corridors around the island. All of the excavated material would be used for beach renourishment. The applicant has completed a series of test borings in the proposed dredge area and submitted grain size analysis data of the test results. Grain sizes of the sediments in the canal/lagoon systems were smaller than the beach sands. The applicant proposes that if significant pockets of extremely fine sediments are encountered, they can be compartmentalized in a temporary dike on the upper dry sand beach, dewatered and mechanically mixed by dozers prior to final grading. Figure 8 Homeowners Assoc., Inc. Page 3 The proposed project-includes the following areas: M - 1. Banks Channel - 7,750' X 125' X -9' MLW. 2. Waterway Connector Channel - 1,850'. X 125' X -9' MLW: This includes the 600 L_F section connected to Banks Channel, the 800 LF section previously permitted at the channel's connection to the AIWW, and a proposed 450 LF extension on the east end of - - - :- -the waterway c-onneetion channel.:::.- - 3, "Backfin/Causeway Canal _ 2,450'-X-:1 25' X -9' MLW - _= 4::: Sand PQit t banal 2 2ftX 125". 9'-!'AL =- _ 5. Backfn Canal - 1,700'-X 100 X-=9"r MLW 6 Sounds Pint Lagoon - 800'.;X 1 25'X 9' MLW -outtdsl?"Qinf Lagoon Entrance: 2Q€ 3Q0' faperrig to 100`-9' MLW _-? K-Lt 7. Salt Meadow Lagoon - 2,800'X 125'X =9' MLW - --' - -' Salt Meadow Lagoon Entrance - 200' X 300' tapering to 100' X -9' MLW All excavation would be completed by hydraulic pipeline dredge. The south end of the project would terminate approximately 200 feet south of the southern-most lagoon (Sounds Point), as authorized in the 1998 permit (#29-98). The excavated sand sediments would be pumped to the southern end of the Figure 8 Island oceanfront (up to 10,000 LF) to be utilized in beach renourishment and reconstruction. The resulting beach profile is anticipated to be a continuous berm, constructed to approximately 9.5 feet elevation, with a minimum width of 100 feet, tapering toward the ocean at an approximate 20:1 slope. It is estimated that approximately 230,000 cubic yards of medium to fine grain sandy material would be generated from the proposed maintenance excavation. 9. ANTICIPATED IMPACTS The project would result in the excavation of 2,481,250 square feet (56.96 acres) of subtidal, shallow bottom within the combined project areas of Banks Channel, the waterway connector channel, and the canal/lagoon system. Approximately 56,628 square feet (1.3 acres) of that total would be inter-tidal sand' flats. The only area not previously authorized for excavation is the proposed extension of the waterway connection channel (450' X 125' X -9' MLW). The projected 230,000 cubic yards of dredged sand sediments would be placed on the southern end of Figure 8 Island's upper beach shoreline (10,000' X ±200'). The dredging and beach renourishment activities would create short-term turbidity, as well as, impact the intertidal macro fauna and benthic communities within the proposed excavation and spoil disposal areas. The applicant contends that adverse impacts would be minimized by timing the project to avoid periods of peak biological activity and outside of sea turtle nesting season, and that affected species populations would return to pre-project distributions within one or two years. The applicant's consultants have presented their assessment of all of the project's environmental impacts in Appendix 5A. Channel maintenance would promote and improve navigation in the badly shoaled Banks Channel. The project would serve to reconstruct and renourish the beach on the southern end of Figure 8 Island, thus affording additional protection to oceanfront property owners from seasonal and storm erosion. Submitted by: E.F. Brooks Date: 6/10/04 Office: Wilmington CRISER` 8C TROUTMAN SURVEY BY: REMcSIONS V" DATE DMMEN i' 11 CONSULTING ENGINEERS o ° "E'' NO p t T H, _ ?.y??? R %J 3809 PEACMEE AVENUE, SURE 102 colwvnn & t>wt Assukru 9?,i 1 Na _ W0.111NDTON, WmH CAROLINA 28403 '-: ffi y' c (910) 397-2929 FAx (910) 397-2971 T2?kg1m 113 og? &W- 2"11 COAS -"r Dab: 11/12/03 MAINTENANCE DREDGE - BANKS CHANNEL L ?"131??n1j-?, FlGURE 8 ISLAND Vsrtled ol Dolum: uLW 8" OVERALL SITE PLAN AND INDEX DESIGNED BY: CED DRAWN BY: HWL OUAIIIY CONTROL. CEO SCALE: N.T.S. FILE NUMBER: 5272 DATE: 1/15/04 SHEET NO. Cl DF Cy 4 C f' I. ;.... f 24110, CRISER BC TROUTMAN SURVEY BY: REVISIONS DESIGNED BY. cm DA COMMENT DRAWN BY: HWL , KI-1, REV. N 0. ` I . , CONSULTING ENGINEERS o 3809 PEACHTREE AVENUE. SUITE 102 DUALITY CONTROL CEO !R 11 ?1CW WILMINGTON, NORTH CAROLINA 28403 Cah°g°n R Bryonf Associates T&W-tone SCALE- As SHOWN ?F y (910) 397-2929 FAX (910) 397-2971 7217 U°NI 113 ood. FILE NUMBER: 5272 E t ?TENANCE DREDGE - BANKS CHANNEL 5GV°y Date: 12/12/03 DATE: 4/15/04 2?s FIGURE B ISLAND Ve Bcol Dalum: IALW BFF SHEET NO. "' ENLARGED SITE PLAN `? re e g)!f CRISER & TROUTMAN CON E SURVEY BY: - 1, REV REVISIONS DESIGNED BY: CEO COMMENT DRAWN By HWL N' SULTING NGINEERS 3809 PEACNTREE AVENUE, SURE 102 M WAI2IY CONTPIX; CED NP (aF WILMINGTON, RTH CAROONA 28403 (910) 397-2929 FAT( (910) 397-2971 Wh.pa & Bo- M°a°mroa nn UM 117 apbn B?nbeu Imr MWnEgI°q NC 26411 SCALE: AS SHOWN . i 1+", a All ? E M q AINTENANCE DREDGE - BANKS CHANNEL Survey U.: 12/12/03 FILE NUMBER: 5272 DATE: ; RGURE 8 ISIAND ENLARGED SITE PLAN Vertical Mum: MLW M °' '" 4/15/04 SHEET NO. i .1fX? All CRISER & TROUTMAN SURVEY BY: REVISIONS DESIGNED BY: CED T A R? ' ' CONSULTING ENGINEERS DATE COMMENT Rev. o s D DRAWN BY: MWL fl' ii??yyyyypyy Eq? A{ Q 'Ai??2y1 .? • y , fq ? P??? R^!I U ? L 3809 PEACHRiEE AVENUE, SURE 102 WILMINGTON, NDRD{ CAROUNA 28403 GaAagaa B B,00.4x4odd. aUAUTY CONTROL CED sC1LE: As SHOWN a yyy???kkJJ p y . .? (910) 397-2929 FAX (910) 397-2971 72v uM 113 Oge WYnh tan NC 2&11 B ? ?Nr??? 'O MAINTENANCE DREDGE - BANKS CHANNEL , g Survey Gate: 12/12/03 FILE NUMBER: 5272 DATE: 4/15/04 C „?SN(R?IAG FIGURE 8 ISLAND VOKW Datum: WIN B Fr SHEET No FI ENLARGED SITE PLAN = ,,,„,,,,. . C6 OF _ 4 v Mill Hupp I t( X NAY >; 4 CRISER & TROUTMAN SURVEY BY: CONSULTING ENGINEERS 3809 P o e EACHTREE AVENUE, Su- 102 W ILMINGTON, I`bR`M CAROUNA 28403 (910) 397-2929 FAX (910) 397-2971 Cohopon : fkyanf Awciofw " B'"M°' In„ c °qdi l vmi w li 1 il l ,v ? DREDGE - BANKS CHANNEL Survey Dote: 12/12/03 'W" 8 ISLAND ARGED SITE PLAN V.. p ,i; YLW REVISIONS DESIGNED BY: CEO COMMENT DRAWN BYE ryWL .u. GONIROU CED SCALE AS SNOW. FILE NUMBER: 5272 DATE: 4/15/04 SHE No, OF WAT?c9 Michael F. Easley, Governor 0 William G. Ross Jr., Secretary ?O G North Carolina Department of Environment and Natural Resources ..? Alan W. Klimek, P.E.,Director Coleen H. Sulllins, Deputy Director Division of Water Quality August 6, 2004 WETLANDS/ 401 GROUP Mr. David Kellam AUG 13 2004 Figure 8 Beach Homeowners Association 15 Bridge Road Wilmington, NC 28411 WATER QUALITY SECTION SUBJECT: Approval of 401 Water Quality Certification and Additional Conditions Maintenance Dredging of Banks Channel and Extension of Waterway Connector Channel DWQ Project # 040987 New Hanover County Dear Mr. Kellam: You have our approval, in accordance with the attached conditions (WQC # 3400) to conduct the following activity located in Banks Channel and on the southern end of Figure 8 Beach, in New Hanover County. This approval allows you to: Perform maintenance excavation by hydraulic pipeline dredge in the following areas: a) Banks Channel 1,150' x 125' x -9' MLW b) Backfin/Causeway Canal 2,450' x 125' x -9' MLW C) Sandy Point Canal 2,200' x 125' x -9' MLW d) Backfin Canal 1,700' x 100' x -9' MLW e) Sounds Point Lagoon 800' x 125' x -9' MLW Sounds Point Lagoon Entrance 200' x 300' tapering to 100' x -9' MLW f) Salt Meadow Lagoon 2,800' x 125' x -9' MLW Salt Meadow Lagoon Entrance 200' x 300' tapering to 100' x -9' MLW; 2. Excavate an area of the waterway connection channel 450' x 125' x-9' MLW; 3. Place approximately 230,000 cubic yards of dredged sand sediments (beach compatible) on the southern end of Figure 8 Island's upper beach shoreline (10,000' x +/- 200'). This approval is only valid for the purpose and design that you described in your CAMA M4jor application received by the Division of Water Quality (DWQ) on June 16, 2004. After reviewing your application, we have determined that General Water Quality Certification Number 3400 covers this activity. This Certification allows you to use your CAMA Permit when the NC Division of Coastal Management issues it. Please keep in mind that there may be additional Federal, State or Local regulations applicable to your project, such as (but not limited to) Sediment and Erosion Control, Non- Discharge and Water Supply Watershed regulations, NPDES and Coastal Stormwater. In addition, this approval will expire when the accompanying CAMA Permit expires unless otherwise specified in the General Certification. N. C. Division of Water Quality 127 Cardinal Drive Extension (910) 395-3900 Customer Service Wilmington Regional Office Wilmington, NC 28405 (910) 350-2004 Fax 1 800 623-7748 ???, RTC 4 6 Page Two Mr. Kellam DWQ Project # 040987 August 6, 2004 This approval is only valid for the purpose and design that you described in your revised CAMA Major Permit application received by the Division of Coastal Management. If you change or modify your project, you must notify the Division (DWQ) in writing and you may be required to send us a new application for a new certification. If the property is sold, the new owner must be given a copy of the Certification and approval letter and is thereby responsible for complying with all conditions. If total wetland fills for this project (now or in the future) exceed one acre, compensatory mitigation may be required as described in 15A NCAC 2H .0506 (h). For this approval to be valid, you must follow the conditions listed in the attached certification and the additional conditions listed below: 1. Upon completion of all work approved within the 401 Water Quality Certification or applicable Buffer Rules, and any subsequent modifications, the applicant is required to return the attached certificate of completion to this office and a copy to the 401/Wetlands Unit, North Carolina Division of Water Quality, 1650 Mail Service Center, Raleigh, NC, 27699-1650; 2. No excavation or fill of any kind shall occur in wetlands, waters, or riparian areas beyond the footprint of the impacts depicted in the revised CAMA Major Application. All construction activities, including the design, installation, operation, and maintenance of sediment and erosion control Best Management Practices, shall be performed so that no violations of state water quality standards, statutes, or rules occur; Monitoring for macro invertebrates between mean high tide and mean low tide along the beach disposal site on Figure 8 Island is required. A monitoring plan is currently being implemented in this area for New Hanover County and the Mason Inlet Project. Prior to dredging, provide a monitoring plan or an explanation describing how Figure 8 Island will coordinate macro invertebrate monitoring with New Hanover County and the upcoming Mason Inlet Maintenance; Project. Please notify this Office at the number listed below if any problem arises during the construction of the project that may affect water quality. If you do not accept any of the conditions of this certification, you may ask for an adjudicatory hearing. You must act within 60 days of the date that you receive this letter. To ask for a hearing, send a written petition conforming to Chapter 150B of the North Carolina General Statutes to the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, N.C. 27699-6714. This certification and its conditions are final and binding unless you ask for a hearing. This letter completes the review of the DWQ Permit #040987 under Section 401 of the Clean Water. Act. If you have any questions, please telephone Noelle Lutheran or Rick Shiver at 910-395-3900. Sincerely, Attachments: GC # 3400 1.1--?'A Alan W. Klimek, P.E., Director Division of Water Quality Certificate of Completion cc: Corps of Engineers Wilmington Field Office - Henry Wicker WiRO- Noelle Lutheran 401/Wetland Unit, Central Office - Cyndi Karoly 40I-/Wttlaind1U, hit, Cetitrkl Office - Larry Eaton CAMA - Ed Brooks CAMA Raleigh - Doug Huggett Central Files WQC #3400 CAMA PERMIT CERTIFICATION GENERAL CERTIFICATION FOR PROJECTS ELIGIBLE FOR CORPS OF ENGINEERS GENERAL PERMIT NUMBER 198000291 (ISSUED TO THE NORTH CAROLINA DIVISION OF COASTAL MANAGEMENT AND RIPARIAN AREA PROTECTION RULES (BUFFER RULES) This General Certification is issued in conformity with requirement of Section 401, Public Laws 92-500 and 95-217 of the United States and subject to the North Carolina Division of Water Quality Regulations in 15 NCAC 2H, Section .0500 and 15 NCAC 2B.0200 for the discharge of fill material as described in General Permit 198000291 and for the Riparian Area Protection Rules (Buffer Rules) in 15A NCAC 2B .0200. This Certification replaces Water Quality Certification Number 3025 issued on September 6, 1995, Water Quality Certification Number 3112 issued on February 11, 1997, Water Quality Certification Number 3274 issued June 1, 2000 and Water Quality Certification Number 3371 issued March 18, 2002. This WQC is rescinded when the Corps of Engineers re-authorizes Regional General Permit 0291 or when deemed appropriate by the Director of DWQ. The State of North Carolina certifies that the specified category of activity will not violate applicable portions of Sections 301, 302, 303, 306 and 307 of the Public Laws 92-500 and 95-217 if conducted in accordance with conditions hereinafter set forth. Conditions of Certification: 1. Activities authorized by CAMA major permits require written concurrence from the Division of Water Quality as well as compliance with all conditions of this General Certification; 2. Activities authorized by Coastal Area Management Act (CAMA) Minor or General Permits do not require written authorization from the Division of Water Quality as long as they comply with all other conditions of this General Certification; 3. In accordance with North Carolina General Statute Section 143-215.3D(e), any request for written concurrence for a 401 Water Quality Certification must include the appropriate fee. If a project also requires a CAMA Permit, one payment to both agencies shall be submitted and will be the higher of the two fees. The fee shall be collected and distributed between the two agencies in accordance with agreements reached between the Division of Water Quality and the Division of Coastal Management; 4. In accordance with 15A NCAC 2H .0506 (h) compensatory mitigation may be required for impacts to 150 linear feet or more of streams and/or one acre or more of Wetlands. In addition, buffer mitigation may be required for any project with Buffer Rules in effect at the time of application for buffer impacts resulting from activities classified as "allowable with mitigation" within the "Table of Uses" section of the Buffer Rules or require a variance under the Buffer Rules. A determination of buffer, wetland and stream mitigation requirements shall be made for any Certification for this Nationwide Permit. The most current design and monitoring protocols from DWQ shall be followed and written plans submitted for DWQ approval as required in those protocols. When compensatory mitigation is required for a project, the mitigation plans must be approved by DWQ in writing before the impacts approved by the Certification occur. The mitigation plan must be implemented and/or constructed before any permanent building or structure on site is occupied. In the case of public road projects, the mitigation plan must be implemented before the road is opened to the travelling public; WQC #3400 5. Compensatory stream mitigation shall be required at a 1:1 ratio for not only perennial but also intermittent stream impacts that require application to DWQ in watersheds classified as ORW, HQW, Tr, WS-1 and WS-11 unless the project is a linear, publicly- funded transportation project, which has a 150-foot per-stream impact allowance; 6. Impacts to any stream length in the Neuse and Tar-Pamlico River Basins (or any other major river basins with Riparian Area Protection Rules (Buffer Rules] in effect at the time of application) requires written concurrence from DWQ in accordance with 15A NCAC 2B.0200. New development activities located in the protected 50-foot wide riparian areas (whether jurisdictional wetlands or not) within the Neuse and Tar- Pamlico River Basins shall be limited to "uses" identified within and constructed in accordance with 15A NCAC 2B .0200. All new development shall be located, designed, constructed, and maintained to have minimal disturbance to protect water quality to the maximum extent practicable through the use of best management practices. Activities listed as "exempt" from these rules do not need to apply for written concurrence under this Certification; 7. All sediment and erosion control measures placed in wetlands or waters shall be removed and the original grade restored after the Division of Land Resources has released the project; 8. If an environmental document is required, this Certification is not valid until a Finding of No Significant Impact (FONSI) or Record of Decision (ROD) is issued by the State Clearinghouse; 9. That appropriate sediment and erosion control practices which equal or exceed those outlined in the most recent version of the "North Carolina Sediment and Erosion Control Planning and Design Manual" or the "North Carolina Surface Mining Manual" whichever is more appropriate (available from the Division of Land Resources (DLR) in the DENR Regional or Central Offices) shall be in full compliance with all specifications governing the proper design, installation and operation and maintenance of such Best Management Practices in order to assure compliance with the appropriate turbidity water quality standard; 10. Measures shall be taken to prevent live or fresh concrete from coming into contact with freshwaters of the state until the concrete has hardened; 11. Additional site-specific conditions may be added to projects which have applied for CAMA major permits which are proposed under this Certification in order to ensure compliance with all applicable water quality and effluent standards; 12. When written concurrence is required, the applicant is required to use the most recent version of the Certification of Completion form to notify DWQ when all work included in the 401 Certification has been completed; 13. Concurrence from DWQ that this Certification applies to an individual project shall expire three years from the date of the cover letter from DWQ or on the same day as the expiration date of the corresponding General Permit 198000291, whichever is sooner. Non-compliance with or violation of the conditions herein set forth by a specific fill project shall result in revocation of this Certification for the project and may result in criminal and/or civil penalties. WQC #3400 The Director of the North Carolina Division of Water Quality may require submission of a formal application for individual certification for any project in this category of activity that requires written concurrence under this certification, if it is determined that the project is likely to have a significant adverse effect upon water quality or degrade the waters so that existing uses of the wetland or downstream waters are precluded. Public hearings may be held for specific applications or group of applications prior to a Certification decision if deemed in the public's best interest by the Director of the North Carolina Division of Water Quality. Effective date: March 2003 DIVISION OF WATER QUALITY By Alan W. Klimek Director WQC #3400 DWQ Project No.: County: S. Applicant: Project Name: Date of Issuance of 401 Water Quality Certification: Certificate of Completion Upon completion of all work approved within the 401 Water Quality Certification or applicable Buffer Rules, and any subsequent modifications, the applicant is required to return this certificate to the 401/Wetlands Unit, North Carolina Division of Water Quality, 1621 Mail Service Center, Raleigh, NC, 27699-1621. This form may be returned to DWQ by the applicant, the applicant's authorized agent, or the project engineer. It is not necessary to send certificates from all of these. Applicant's Certification 1, , hereby state that, to the best of my abilities, due care and diligence was used in the observation of the construction such that the construction was observed to be built within substantial compliance and intent of the 401 Water Quality Certification and Buffer Rules, the approved plans and specifications, and other supporting materials. Signature: Agent's Certification Date: I, , hereby state that, to the best of my abilities, due care and diligence was used in the observation of the construction such that the construction was observed to be built within substantial compliance and intent of the 401 Water Quality Certification and Buffer Rules, the approved plans and specifications, and other supporting materials. Signature: Engineer's Certification Partial Final Date: 1> , as a duly registered Professional Engineer in the State of North Carolina, having been authorized to observe (periodically, weekly, full time) the construction of the project,for the Permittee hereby state that, to the best of my abilities, due care and diligence was used in the observation of the construction such that the construction was observed to be built within substantial compliance and intent of the 401 Water Quality Certification and Buffer Rules, the approved plans and specifications, and other supporting materials. Signature Registration No. Date Mail to: 401 Wetlands Contact NC Dept. of Environment and Natural Resources 127 Cardnal Drive Ext. Wilmington, NC 28405-2004 of \NArF9 Michael F. Easley, Governor Q William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources co 7? >_ q Division of Water y Alan W. Klimek, P.E.,Director Coleen H Sullins, Deputy Director Division of Water Quality August 6, 2004 WETLANDS/ 401 GROUP Mr. David Kellam AUG 1 12004 Figure 8 Beach Homeowners Association 15 Bridge Road WATER QUALITY SECTION Wilmington, NC 28411 SUBJECT: Approval of 401 Water Quality Certification and Additional Conditions Maintenance Dredging of Banks Channel and Extension of Waterway Connector Channel DWQ Project # 040987 New Hanover County Dear Mr. Kellam: You have our approval, in accordance with the attached conditions (WQC # 3400) to conduct the following activity located in Banks Channel and on the southern end of Figure 8 Beach, in New Hanover County. This approval allows you to: Perform maintenance excavation by hydraulic pipeline dredge in the following areas: a) Banks Channel 1,150' x 125' x -9' MLW b) Backfin/Causeway Canal 2,450'x 125' x -9' MLW C) Sandy Point Canal 2,200' x 125' x -9' MLW d) Backfin Canal 1,700' x 100' x -9' MLW e) Sounds Point Lagoon 800' x 125' x -9' MLW Sounds Point Lagoon Entrance 200' x 300' tapering to 100' x -9' MLW f) Salt Meadow Lagoon 2,800' x 125' x -9' MLW Salt Meadow Lagoon Entrance 200' x 300' tapering to 100' x -9' MLW; 2. Excavate an area of the waterway connection channel 450' x 125' x-9' MLW; 3. Place approximately 230,000 cubic yards of dredged sand sediments (beach compatible) on the southern end of Figure 8 Island's upper beach shoreline (10,000' x +/- 200'). This approval is only valid for the purpose and design that you described in your CAMA Major application received by the Division of Water Quality (DWQ) on June 16, 2004. After reviewing your application, we have determined that General Water Quality Certification Number 3400 covers this activity. This Certification allows you to use your CAMA Permit when the NC Division of Coastal Management issues it. Please keep in mind that there may be additional Federal, State or Local regulations applicable to your project, such as (but not limited to) Sediment and Erosion Control, Non- Discharge and Water Supply Watershed regulations, NPDES and Coastal Stormwater. In addition, this approval will expire when the accompanying CAMA Permit expires unless otherwise specified in the General Certification. N. C. Division of Water Quality 127 Cardinal Drive Extension (910) 395-3900 Customer Service Wilmington Regional Office Wilmington, NC 28405 (910) 350-2004 Fax 1 800 623-7748 Page Two Mr. Kellam DWQ Project # 040987 August 6, 2004 This approval is only valid for the purpose and design that you described in your revised CAMA Major Permit application received by the Division of Coastal Management. If you change or modify your project, you must notify the Division (DWQ) in writing and you may be required to send us a new application for a new certification. If the property is sold, the new owner must be given a copy of the Certification and approval letter and is thereby responsible'for complying with all conditions. If total wetland fills for this project (now or in the future) exceed one acre, compensatory mitigation may be required as described in 15A NCAC 2H .0506 (h). For this approval to be valid, you must follow the conditions listed in the attached certification and the additional conditions listed below: 1. Upon completion of all work approved within the 401 Water Quality Certification or applicable Buffer Rules, and any subsequent modifications, the applicant is required to return the attached certificate of completion to this office and a copy to the 401/Wetlands Unit, North Carolina Division of Water Quality, 1650 Mail Service Center, Raleigh, NC, 27699-1650; 2. No excavation or fill of any kind shall occur in wetlands, waters, or riparian areas beyond the footprint of the impacts depicted in the revised CAMA Major Application. All construction activities, including the design, installation, operation, and maintenance of sediment and erosion control Best Management Practices, shall be performed so that no violations of state water quality standards, statutes, or rules occur; 3. Monitoring for macro invertebrates between mean high tide and mean low tide along the beach disposal site on Figure 8 Island is required. A monitoring plan is currently being implemented in this area for New Hanover County and the Mason Inlet Project. Prior to dredging, provide a monitoring plan or an explanation describing how Figure 8 Island will coordinate macro invertebrate monitoring with New Hanover County and the upcoming Mason Inlet Maintenance Project. Please notify this Office at the number listed below if any problem arises during the construction of the project that may affect water quality. If you do not accept any of the conditions of this certification, you may ask for an adjudicatory hearing.. You must act within 60 days of the date that you receive this letter. To ask for a hearing, send a written petition conforming to Chapter 150B of the North Carolina General Statutes to the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, N.C. 27699-6714. This certification and its conditions are final and binding unless you ask for a hearing. This letter completes the review of the DWQ Permit #040987 under Section 401 of the Clean Water Act. If you have any questions, please telephone Noelle Lutheran or Rick Shiver at 910-395-3900. Sincerely, Attachments: GC # 3400 Alan W. Klimek, P.E., Director Division of Water Quality Certificate of Completion cc: Corps of Engineers Wilmington Field Office - Henry Wicker WiRO- Noelle Lutheran 401/Wetland Unit, Central Office - Cyndi Karoly 401/Wetland Unit, Central Office - Larry Eaton CAMA - Ed Brooks CAMA Raleigh - Doug Huggett Central Files WQC #3400 CAMA PERMIT CERTIFICATION GENERAL CERTIFICATION FOR PROJECTS ELIGIBLE FOR CORPS OF ENGINEERS GENERAL PERMIT NUMBER 198000291 (ISSUED TO THE NORTH CAROLINA DIVISION OF COASTAL MANAGEMENT AND RIPARIAN AREA PROTECTION RULES (BUFFER RULES) This General Certification is issued in conformity with requirement of Section 401, Public Laws 92-500 and 95-217 of the United States and subject to the North Carolina Division of Water Quality Regulations in 15 NCAC 2H, Section .0500 and 15 NCAC 2B .0200 for the discharge of fill material as described in General Permit 198000291 and for the Riparian Area Protection Rules (Buffer Rules) in 15A NCAC 2B .0200. This Certification replaces Water Quality Certification Number 3025 issued on September 6, 1995, Water Quality Certification Number 3112 issued on February 11, 1997, Water Quality Certification Number 3274 issued June 1, 2000 and Water Quality Certification Number 3371 issued March 18, 2002. This WQC is rescinded when the Corps of Engineers re-authorizes Regional General Permit 0291 or when deemed appropriate by the Director of DWQ. The State of North Carolina certifies that the specified category of activity will not violate applicable portions of Sections 301, 302, 303, 306 and 307 of the Public Laws 92-500 and 95-217 if conducted in accordance with conditions hereinafter set forth. Conditions of Certification: 1. Activities authorized by CAMA major permits require written concurrence from the Division of Water Quality as well as compliance with all conditions of this General Certification; 2. Activities authorized by Coastal Area Management Act (CAMA) Minor or General Permits do not require written authorization from the Division of Water Quality as long. as they comply with all other conditions of this General Certification; In accordance with North Carolina General Statute Section 143-215.3D(e), any request for written concurrence for a 401 Water Quality Certification must include the appropriate fee. If a project also requires a CAMA Permit, one payment to both agencies shall be submitted and will be the higher of the two fees. The fee shall be collected and distributed between the two agencies in accordance with agreements reached between the Division of Water Quality and the Division of Coastal Management; 4. In accordance with 15A NCAC 2H .0506 (h) compensatory mitigation may be required for impacts to 150 linear feet or more of streams and/or one acre or more of wetlands. In addition, buffer mitigation may be required for any project with Buffer Rules in effect at the time of application for buffer impacts resulting from activities classified as "allowable with mitigation" within the "Table of Uses" section of the Buffer Rules or require a variance under the Buffer Rules. A determination of buffer, wetland and stream mitigation requirements shall be made for any Certification for this Nationwide Permit. The most current design and monitoring protocols from DWQ shall be followed and written plans submitted for DWQ approval as required in those protocols. When compensatory mitigation is required for a project, the mitigation plans must be approved by DWQ in writing before the impacts approved by the Certification occur. The mitigation plan must be implemented and/or constructed before any permanent building or structure on site is occupied. In the case of public road projects, the mitigation plan must be implemented before the road is opened to the travelling public; WQC #3400 5. Compensatory stream mitigation shall be required at a 1:1 ratio for not only perennial but also intermittent stream impacts that require application to DWQ in watersheds classified as ORW, HQW, Tr, WS-I and WS-II unless the project is a linear, publicly- funded transportation project, which has a 150-foot per-stream impact allowance; 6. Impacts to any stream length in the Neuse and Tar-Pamlico River Basins (or any other major river basins with Riparian Area Protection Rules [Buffer Rules] in effect at the time of application) requires written concurrence from DWQ in accordance with 15A NCAC 213.0200. New development activities located in the protected 50-foot wide riparian areas (whether jurisdictional wetlands or not) within the Neuse and Tar- Pamlico River Basins shall be limited to "uses" identified within and constructed in accordance with 15A NCAC 2B .0200. All new development shall be located, designed, constructed, and maintained to have minimal disturbance to protect water quality to the maximum extent practicable through the use of best management practices. Activities listed as "exempt" from these rules do not need to apply for written concurrence under this Certification; 7. All sediment and erosion control measures placed in wetlands or waters shall be removed and the original grade restored after the Division of Land Resources has released the project; 8. If an environmental document is required, this Certification is not valid until a Finding of No Significant Impact (FONSI) or Record of Decision (ROD) is issued by the State Clearinghouse; 9. That appropriate sediment and erosion control practices which equal or exceed those outlined in the most recent version of the "North Carolina Sediment and Erosion Control Planning and Design Manual" or the "North Carolina Surface Mining Manual" whichever is more appropriate (available from the Division of Land Resources (DLR) in the DENR Regional or Central Offices) shall be in full compliance with all specifications governing the proper design, installation and operation and maintenance of such Best Management Practices in order to assure compliance with the appropriate turbidity water quality standard; 10. Measures shall be taken to prevent live or fresh concrete from coming into contact with freshwaters of the state until the concrete has hardened; 11. Additional site-specific conditions may be added to projects which have applied for CAMA major permits which are proposed under this Certification in order to ensure compliance with all applicable water quality and effluent standards; 12. When written concurrence is required, the applicant is required to use the most recent version of the Certification of Completion form to notify DWQ when all work included in the 401 Certification has been completed; 13. Concurrence from DWQ that this Certification applies to an individual project shall expire three years from the date of the cover letter from DWQ or on the same day as the expiration date of the corresponding General Permit 198000291, whichever is sooner. Non-compliance with or violation of the conditions herein set forth by a specific fill project shall result in revocation of this Certification for the project and may result in criminal and/or civil penalties. WQC #3400 The Director of the North Carolina Division of Water Quality may require submission of a formal application for individual certification for any project in this category of activity that requires written concurrence under this certification, if it is determined that the project is likely to have a significant adverse effect upon water quality or degrade the waters so that existing uses of the wetland or downstream waters are precluded. Public hearings may be held for specific applications or group of applications prior to a Certification decision if deemed in the public's best interest by the Director of the North Carolina Division of Water Quality. Effective date: March 2003 DIVISION OF WATER QUALITY By Alan W. Klimek Director WQC # 3400 DWQ Project No.: Applicant: Project Name: Date of Issuance of 401 Water Quality Certification: County: Certificate of Completion Upon completion of all work approved within the 401 Water Quality Certification or applicable Buffer Rules, and any subsequent modifications, the applicant is required to return this certificate to the 401/Wetlands Unit, North Carolina Division of Water Quality, 1621 Mail Service Center, Raleigh, NC, 27699-1621. This form may be returned to DWQ by the applicant, the applicant's authorized agent, or the project engineer. It is not necessary to send certificates from all of these. Applicant's Certification 1, , hereby state that, to the best of my abilities, due care and diligence was used in the observation of the construction such that the construction was observed to be built within substantial compliance and intent of the 401 Water Quality Certification and Buffer Rules, the approved plans and specifications, and other supporting materials. Signature: Date: Agent's Certification 1, , hereby state that, to the best of my abilities, due care and diligence was used in the observation of the construction such that the construction was observed to be built within substantial compliance and intent of the 401 Water Quality Certification and Buffer Rules, the approved plans and specifications, and other supporting materials. Signature: Date: Engineer's Certification Partial Final I, , as a duly registered Professional Engineer in the State of North Carolina, having been authorized to observe (periodically, weekly, full time) the construction of the project,for the Permittee hereby state that, to the best of my abilities, due care and diligence was used in the observation of the construction such that the construction was observed to be built within substantial compliance and intent of the 401 Water Quality Certification and Buffer Rules, the approved plans and specifications, and other supporting materials. Signature Date Registration No. Mail to: 401 Wetlands Contact NC Dept. of Environment and Natural Resources 127 Cardnal Drive Ext. Wilmington, NC 28405-2004 MEMORANDUM TO: John Dorney Regional Contact: Noelle Lutheran Non-Discharge Branch WO Supervisor: Rick Shiver Date: SUBJECT: WETLAND STAFF REPORT AND RECOMMENDATIONS Facility Name Figure 8 Beach Homeowners Association Project Number 04 0987 Recvd From DCM Received Date 6/16/04 Recvd By Region Project Type Maintenance dredging County New Hanover County2 Region Wilmington Certificates Stream Permit Wetland Wetland Wetland Stream Class Acres Feet Type Type Impact Score Index Prim. Supp. Basin Req. Req. CAMA Waters PT -@)N F_ 18-87 11.7 SA ORw r30,624. 79.92 ?- Mitigation Wetland MitigationType Type Acres Feet Is Wetland Rating Sheet Attached? 0 Y 0 N Did you request more info? 0 Y 0 N Have Project Changes/Conditions Been Discussed With Applicant? OQ Y 0 N Is Mitigation required? 0 Y 0 N Recommendation: 0 Issue # Issue/Cond 0 Deny Provided by Region: Latitude (ddmmss) Longitude (ddmmss) Comments: This office has no objection to this eject as imposed nrovidied that the app icant meets all of the conditions of General Water Quality Certification #3400 and the additional conditions listed in the written 401 WOC. The 401 WOC was issued on 08/06/2004. NL cc: Regional Office Central Office Page Number 1 DEPARTMENT OF THE ARMY Wilmington District, Corps of Engineers Post Office Box 1890 Wilmington, North Carolina 28402-1890 (http://www.saw.usace.army.mil/wetlands/regtour.htm) Action ID No. 199901052 August 5, 2004 PUBLIC NOTICE NEW HANOVER COUNTY, NORTH CAROLINA has applied for a MAINTENANCE EVENT UNDER Department of the Army (DA) permit 199901052 TO MAINTENANCE DREDGE MASON INLET AND MASON CREEK AND PLACE THE MATERIAL ON FIGURE 8 ISLAND FOR BEACH NOURISHMENT. The following description of the work is taken from data provided by the applicant and from observations made during onsite by representatives of the Corps of Engineers and the North Carolina Department of Environment and Natural Resources. Plans submitted with application show that the work will involve maintenance dredging of 58,000 cubic yards (cy) from Mason Creek, and 126,000 cy from the inlet shoulder and sediment basin at Mason Inlet with the material placed along 10,000 feet of the Figure 8 Island beach as originally authorized under DA permit Action ID Number 199901052. This is the first maintenance event under the Corps of Engineers permit authorizing maintenance until December 31, 2031. Each maintenance event requires modification of the Coastal Area Management Act/State Dredge and Fill Law permit issued by the Department of Environment and Natural Resources. The purpose of the work is to maintain Mason Inlet within its 1000-foot corridor. Annual dredging may be necessary to minimize the environmental impacts and movement of the inlet. Plans showing work are included with this public notice. This proposal shall be reviewed for the applicability of other actions by North Carolina agencies such as: a. Water Quality Certification under Section 401 of the Clean Water Act by the North Carolina Division of Water Quality (NCDWQ). b. Easement to fill or otherwise occupy State-Owned submerged land under North Carolina General Statute 143-341(4), 146-6, 146-11, and 146-12 by the North Carolina Department of Administration (NCDA) and the North Carolina Council of State. c. Approval of an Erosion and Sedimentation control Plan by the Land Quality Section, North Carolina Division of Land Resources (NCDLR), pursuant to the State Sedimentation Pollution Control Act of 1973 (NC G.S. 113 a-50-66). The State of North Carolina will review this public notice to determine the need for the applicant to obtain any required State authorization. Any person may request, in writing within the comment period specified in this notice, that a public hearing be held to consider this application. Request for the public hearing shall state, with particularity, the reasons for holding the public hearing. The decision whether to authorize a maintenance event will be based on an evaluation of the probable impacts, including cumulative impacts, of the proposed activity and its intended use on the public interest. Evaluation of the probable impacts which the proposed activity may have on the public interest requires a careful weighing of all those factors which become relevant in each particular case. The benefits which reasonably may be expected to accrue from the proposal must be balanced against its reasonably foreseeable detriments. The decision whether to authorize a proposal, and if so the conditions under which it will be allowed to occur, are therefore determined by the outcome of the general balancing process. That decision should reflect the national concern for both protection and utilization of important resources. All factors which may be relevant to the proposal must be considered including the cumulative effects thereof. Among those are conservation, economics, aesthetics, general environmental concerns, wetlands, cultural values, fish and wildlife values, flood hazards and flood plain values (in accordance with Executive Order 11988), land use, navigation, shore erosion and accretion, recreation, water supply and conservation, water quality, energy needs, safety, food and fiber production, mineral needs, considerations of property ownership, and, in general, the needs and welfare of the people. Subject to the preceding sentence and any other applicable guidelines or criteria, authorization will be granted unless the District Engineer determines that it would be contrary to the public interest. The Corps of Engineers and the Department of Environment and Natural Resources is soliciting comments from the public; Federal, State and local agencies and officials; Indian Tribes and other interested parties in order to consider and evaluate the impacts of this proposed activity. Any comments received will be considered by the Corps of Engineers and the Department of Environment and Natural Resources to determine whether to issue, modify, condition or deny authorization for this proposal. To make this decision, comments are used to assess impacts on endangered species, historic properties, water quality, general environmental 2 effects and the other public interest factors listed above. Comments are used to determine the need for a public hearing and to determine the overall public interest of the proposed activity. Written comments pertinent to the proposed work, as outlined above, will be received In the Wilmington Regulatory Field Office, Attn: Mr. Henry Wicker, Post Office Box 1890, Wilmington, North Carolina, 28402, until 4:15 p.m., September 3, 2004, or telephone (910) 251-4930. Comments pertinent to authorization by the Department of Environment and Natural Resources should be mailed to Charles S. Jones, Director, Division of Coastal Management, 1638 Mail Service Center, Raleigh, North Carolina 27699-1638. a "-4�' ` "O* W1�11J1 "� r�? �y,��`1 � I�������j� ��.``. ,�8` r �IFiI®1�1®Iplr►y1W1�_ 51 •� {IAS x l '\ r � - t G -il'j ?fir 77� �" �s�>�r��v�,, ,,� .,.��• r;r „a,e, _,,.. IJ��y1J1A11 i v* G G 1 �'Y xl �.+✓ ^rte +1k�'A 4,, \ tf j i L' rl 'W. Ix �r a y S P� �yr� s ' .• d 4ason InlAf Mnnifnrinn • Iaajoad BUIJOPOH 181ul uosaW + + I + 1 .- _ + I + I _ I I ? _? 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I I I 8 _ sl I; I _ I; _? 3t I? -$ I In O I I LO O I W) 0 I - N I I - O + Lo - ¦ I n - I p _ ?i= I I I I I I I o /; -j -? _j - N ° p - ` N I - N I - o- a a _ _ O + w - N ° I - o _ O O I ?_ ° R- o / I J o I J _ I m- I I m- I I m I I=i I I $-t I 1 9-4 I I ? I I I _ I I I o 3 i I I _? I o 3 I _? I I I g -_? _? -? I 10 O _ _ ? -_ ill Il lifIIIIIIIIII-11111 Jill I I I I I I I I I 111 1 11 11 1 1 111111 N 1 IT IlItl 11IT111111 I I 0q -9,31 ENT OF ryF United States Department of the Interior QP i O? yT n FISH AND WILDLIFE SERVICE Raleigh Field Office Post Office Box 98726 c Raleigh, North Carolina 27696-9726 July 30, 2004 WETLANDS/ 401 GROUP Mr. Henry Wicker AUG r 0 2004 U. S. Army Corps of Engineers Wilmington Regulatory Field Office P. O. Box 1890 Wilmington, North Carolina 28402-1890 WATER QUALITY SECTION Subject: Action ID # 200400895; Figure Eight Island Homeowners Association, Dredging in Banks Channel and Connecting Waters, New Hanover County., North Carolina Dear Mr. Wicker: This letter provides the comments of the U. S. Fish and Wildlife Service (Service) on the subject Public Notice (PN), dated June 30, 2004. The applicant, Figure Eight Island Homeowners Association (HOA)., has submitted an application for processing under the Coastal Area Management Act (CAMA)-Corps permit processing agreement. The PN addresses a proposal to conduct maintenance dredging in estuarine water near Figure Eight Island and place the material removed on the ocean beaches of the island. These comments are submitted in accordance with the Fish and Wildlife Coordination Act (FWCA) (48 Stat. 401, as amended; 16 U.S.C. 661- 667d). Comments related to the FWCA are to be used in your determination of compliance with 404(b)(1) guidelines (40 CFR 230) and in your public interest review (33 CFR 320.4) in relation to the protection of fish and wildlife resources. Additional comments are provided regarding the District Engineer's determination of project impacts pursuant to section 7 of the Endangered Species Act (ESA) of 1973, as amended (16 U.S.C. 1531-1543). Proposed Project The proposed work is described in the Field Investigation Report (FIR), dated June 10, 2004, of the North Carolina Division of Coastal Management (NCDCM) that accompanied the PN and the permit application, dated April 2004, prepared by Criser and Troutman Consulting Engineers of Wilmington. The applicant proposes maintenance dredging of previously authorized channels with the addition of four canal/lagoon areas. The FIR states that the canal/lagoon areas have been added to present "a comprehensive picture of the island's present and future maintenance dredging needs." All excavations would be done by hydraulic pipeline dredge. The proposed dredging is expected to produce 230,000 cubic yards of material. This material would be placed along approximately 10,000 linear feet (1.89 miles) of beachfront on the southern end of the island. The material would be transported by the dredge pipeline and deposited along the beachfront using a temporary protective berm to control effluent run-off. Pipeline corridors would be established to ensure that no marsh areas or sensitive vegetation 2 would be crossed during construction. The material would be used to construct a continuous berm with an elevation of 9.5 feet and a minimum width of 100 feet. The FIR states that approximately one million square feet (22.96 acres) of beach would be filled by the project. All dredging would be done during the winter season when biological activities in both the sound and the beach would be at a minimum. Service Concerns The Service is concerned about the loss of both subtidal and, especially, intertidal habitats. The permit application (p. 2) states that there are one or two small areas where the shoals may be intertidal. Appendix 5A notes (p. 4) that the proposed work would result in the direct loss of 1.3 acres of intertidal sand flats and an additional 0.1 of an acre due to side slope equilibration, presumably the sloughing of soil following dredging. Both areas are important fish and wildlife habitat and the values of intertidal flats in North Carolina have been described (Peterson and Peterson 1979). Shorebirds forage along intertidal habitat of exposed sand bars and beachfronts. Invertebrates inhabiting intertidal shoals are an important food source for shorebirds and fishes. Birds such as the sanderling (Calidris alba), black-bellied plover (Pluvialis squatarola), willet (Catoptrophorus semipalmatus), ruddy turnstone (Arenaria interpres) , greater yellowlegs (Tringa melanoleuca), lesser yellowlegs (Tringa flavipes ), marbled godwit (Limosa fedoa), American oystercatcher (Naematopus palliatus) , clapper rail (Rallus longirostris), and great blue heron (Ardea herodias) are a few of the birds that may forage on intertidal flats in North Carolina (Peterson and Peterson 1979, pp. 49-58). The Service is concerned that the placement of the dredged material on the beach would reduce the habitat value of the beach by significantly altering the physical characteristics of the beach. The permit application states (p. 2) that grain sizes within the interior lagoons and canals are smaller than beach sand. Some dredge sites vary greatly from normal beach sediment. The grain size analysis provided in the permit application shows that Site S-20 is characterized by gray silt and approximately 90 percent of the material passes through a #200 sieve. The FIR states that if significant pockets of extremely fine sediments are encountered, they can be compartmentalized in a temporary dike on the upper dry sand beach, dewatered, and mechanically mixed by bulldozers prior to final grading. The proposal contains no provisions for excluding any of the dredged material from ultimately being placed on the beach. The application also states (Appendix 5A, p. 2) that "a portion of these smaller grain particles will serve to infill the larger voids within the sand on the beach while the remaining suspended particles will settle rapidly in down-drift areas." As noted, data provided in the permit application indicates that much of the material proposed for beach placement is much smaller than sediment presently on the beach. However, an important aspect of the project not addressed by the applicant is the degree to which the existing beach represents a native beach. Pilkey et al. (1998, p. 183) states that before construction began on Figure Eight Island, the developers elevated the ocean side of a portion of the island using sand excavated from finger canals dug on the back side of the island. The permit application discusses a series of dredging projects on the sound side of the island, including original development in 1969 and dredging permitted in 1992 and 1998. All the prior dredging projects 3 resulted in disposal of the dredged sand on the ocean beaches of the island. The Service is concerned that a situation is emerging in which increasingly finer sand is deemed "compatible" with the existing beach because the beach is composed predominantly of sand from prior disposals originating in the same source. As a potential measure of comparison, the Service reviewed the Corps' planning document for a Topsail Beach erosion project (U. S. Army Corps of Engineers 1990, p. eis-2). This document noted that the ocean beach consisted of "medium to coarse sand." While various definitions may exist for medium and coarse grained sand, the Unified Classification of the American Society for Testing and Material (ASTM) considers coarse sand to range from 4.75 millimeters (mm) to greater than 2.00 mm, the coarse- medium boundary to be 2.00 mm, and medium sand to range from less than 2.00 mm to greater than 0.50 mm in grain size. The four median grain size figures given for the disposal beach range from 0.23 mm to 0.35 mm with an average of 0.265 mm. It is likely that at one time the beach on Figure Eight Island was similar to that of Topsail Beach. Existing data would suggest that there has been a significant reduction in sand grain size on Figure Eight and that current data do not reflect what would be considered a native beach. If a beach composed of coarse to medium grained sand is considered as a natural standard, the material proposed for disposal represents a significant departure from the sediment characteristics of the presumed historic beach to which shorebirds and sea turtles are adapted. The issue of grain size compatibility is critical to many aspects of the project's success, such as longevity, and the adverse environmental impacts, such as turbidity and sedimentation. Pilkey et al (1998, p. 183) state that two nourishment projects on Figure Eight Island prior to 1997 were "substantially lost in short periods." This issue is summarized by the statement (National Research Council [hereafter NRC] 1995, p. 97) that: "The most important borrow material characteristic is the sediment size. Borrow material grain size matching the native material is considered synonymous with quality. Fine material also adversely affects project performance. Early projects constructed without regard for grain size performed relatively poorly, and recent developments indicate that nourishment sand that is only slightly smaller than native sand can result in significantly narrower equilibrated dry beach width compared to sand the same size as (or larger than) native sand." A major reduction in grain size has important ramification for both shorebirds and nesting sea turtles. Beach invertebrates which serve as a food source for near shore fishes and shorebirds live in the spaces between sand grains. High energy, intertidal beaches in the southeastern United States may have 20-30 invertebrate species (Ruppert and Fox 1988, p. 346). Invertebrates found here include the beach digger (Haustorius canadensis), a polychaete worm (Scolelepis sguamata), and, in late summer, the mole crab (Emerita talpoida) and coquina clam (Donax sp.). The swash zone is dominated by the mole crab and coquina clam. Greene (2002 and references therein, p. 25) states that both Emerita and Donax are the primary prey base for surf zone fish, crabs, and shorebirds. 4 One important manifestation of the adaptability of Donax and Emerita to the beach-face is their mobility. Both animals move up and down the beach with each wave uprush; and they stay within the swash zone as the tides change by moving out of the sand on the uprush, if they prefer a higher location on the beach, or in the backrush of the waves as the tides fall, if they prefer a lower location. They do this in steps, moving in mass with almost every wave, in an effort to maintain their position in the active swash zone with optional feeding conditions. Therefore, the "health" of the Emerita and Donax is closely linked with the sediment characteristics of the beach, and the availability of natural seawaters surging up and down the beach-face. Extremely critical is sediment grain size because mole crabs do not actually burrow into the beach as they change locations within the swash zone, but rather vibrate their lower appendages and legs to create a "quicksand" condition in their immediate area. This makes it easy for them to penetrate or burrow into the sand with a minimum expenditure of energy. Anything that significantly alters the beach-face sands has the potential to impact Emerita numbers. If the sand is too coarse, too fine, too well sorted, or contains too many heavy minerals (dark sands), mole crabs find it difficult or impossible to burrow into the beach. If the proposed work reduces populations of beach invertebrates, shorebirds would be adversely affected due to a reduction in food resources. The use of finer grained material can produce a harder, more compacted beach. In discussing the beach building at Atlantic Beach (Carteret County) with sediment from the Morehead City Harbor, Bush et al. (1996, p. 85) wrote that mud in sediment is cohesive enough to form small scarps on the beach and packs down into a relatively hard pavement on the upper beach. Pilkey et al. (1998, p. 101) also noted that dried mud has made sections of Atlantic Beach as "hard as rock." A compacted beach would adversely affect sea turtle nesting success. A compacted beach can increase false crawls, increase nest digging time, hinder gas exchange within incubating nests, alter the hydric environment of the nest, and result in broken eggs from clutches deposited in too shallow an egg chamber (National Marine Fisheries Service and U. S. Fish and Wildlife Service [hereafter NMFS and USFWS] 1991, pp. 21-22). In addition to hindering the excavation of sea turtle nests, a hard, compact beach can also be detrimental to proper incubation. Sand grain shape, size, and compaction can alter gas diffusion necessary for proper development and thereby alter hatching success (NMFS and USFWS 1991, p. 22; Greene 2002 and reference therein, p. 30). The Service is concerned that the work may alter the color of the beach. A darker than normal beach color absorbs more heat and increases beach temperature. Alteration of beach temperature during incubation can alter the incubating environment of the nest and in turn affect hatching success and hatchling sex ratios (NRC 1995 and references therein, p. 112). Pilkey et al. (2004, p. 113) state that all natural North Carolina open beaches are light brown to yellow-brown when viewed from a distance due to iron oxide in shell fragments. Beaches may become darker if black shell fragments are added. Black shell fragments originate in oxygen- poor mud of a lagoon or sound where iron is converted to iron sulfide (Pilkey et al. 2004, p. 115). While black shell fragments may result from island migration which reveals ancient lagoon on the beach front, such fragments may also be introduced by sediment placement. If material for beach construction is taken from a lagoon or old dredge material site, it will contain black shells (Pilkey et al. 2004, p. 115). Current project plans do not address the issue of whether the color of the current beach may already have been altered. The sediment analyses in the permit application note that all four beach sites consisted of "gray sand." One possible explanation for the deviation from a yellow- brown color is that black shell fragments remain on the beach from prior placements of material from estuarine water behind the island. The addition of even more estuarine sediment with dark shells would create an even more unnatural environment for the incubation of sea turtle eggs. The Service is concerned that the proposed work could produce harmful turbidity (and subsequent sedimentation) for an extended period. The permit application states (Appendix 5A, p. 5) that the effects of any elevated turbidity would be limited both temporally and spatially. However, if the finer material is mixed prior to beach placement, finer material could be exposed and washed off the beach for an extended period. There may be a deterioration of nearshore habitat quality due to long-term turbidity from the artificial beach-dune system. Bush et al. (1996, p. 83) state that "streams of turbid water from the surf zone of Miami Beach are still responsible for killing coral heads 14 years after the beach was emplaced." Goldberg (1985 as cited in Goldberg 1988) gives an example of a Florida beach nourishment project which resulted in damage to a nearby rocky environment 50-60 meters (164- 197 feet) offshore. Material placed on the beach during a nourishment project quickly eroded off the beach and covered nearshore rocks. Seven years after the project, the rocks were still covered in fine sand and silt, and turbidity of the nearshore area remained high. Besides grain size on the beach, another aspect of beach nourishment that appears to be important with respect to the "health" of Emerita and Donax is water quality, especially turbidity (Reilly and Bellis, 1983). If the source material for a beach nourishment project includes a significant amount of fine-grained sediment (silts and clays), this may not only impact the distribution of Emerita and Donax in the areas of discharge, but also have a more lasting impact on the adults that winter offshore. Reilly and Bellis (1978, p. 58) concluded that the high turbidity following beach nourishment on Bogue Banks was the probable cause for the failure of adult Emerita to return to Fort Macon beach (Carteret County, North Carolina). While increased turbidity per se is harmful, a closely related event, increased offshore sedimentation, also produces adverse impacts. The suspended particles which are transported by water eventually settle to the bottom creating sedimentation. The settling of suspended particles is also referred to as siltation. Offshore hardbottoms (areas with exposed limestone, phosphate, and other sedimentary rock) are valuable biological communities that support a diverse community of algae, soft and encrusted coral, sea anemones, sea whips, and recreationally important finfish (Frankenberg 1997, pp. 191-192). Nearshore reef habitats that lie within the depth of closure may be destroyed by sand burial resulting from the redistribution of beach fill material (NRC 1995, p. 113-114). Studies have indicated that sand placed on Wrightsville Beach has washed off the beach and buried extensive hardbottoms on the inner continental shelf 6 (Riggs, 1994, p. 17). These hardbottoms were prime fishing locations, but are now out of production due to a covering of two to six inches of sand. Riggs (1994, p. 17) concludes that "The business of beach nourishment and hardbottoms represents a very serious conflict, and a problem that's going to get much bigger." The current evaluation of potential adverse environmental impacts does not discuss the presence or absence of nearshore hardbottom which could be harmed by the work. Special Status Species The Service has reviewed available information on federally-threatened or endangered species known to occur in New Hanover County. We have also reviewed information from the North Carolina Natural Heritage Program (NCNHP) database which contains excellent data on the special status species, both federal and state. This database can be accessed by topographic quadrangle (quad) of the U. S. Geological Survey (USGS). Data from USGS quads provide the most project-specific information on species which should be considered in permitting this project. The project area is located near the boundary of the Wrightsville Beach and Carolina Beach quads. The occurrence data of special status species within these quads can be obtained on the internet at < http://www.ncsparks.net/nhp/quad.html >. Our review indicates that the West Indian manatee (Trichechus manatus), a federally-endangered mammal, could occur in the project area. The species is known to occur in New Hanover County and the NCNHP database indicates several reported occurrences in the coastal waters of the county. The shallow, estuarine waters of the project area may provide suitable habitat for manatees that move along the Atlantic Coast during summer months and are seasonal transients in North Carolina, primarily from June through October. Manatees feed in water one to two meters (3.3 -6.6 feet) deep that may support submerged aquatic vegetation. The species moves extensively when in North Carolina waters and past occurrence records cannot be used to precisely determine the likelihood that it will be present at a particular construction site. To protect manatees in North Carolina, the Service developed guidelines entitled "Precautions for General Construction in Areas Which May Be Used by the West Indian Manatee in North Carolina." These guidelines address all types of in-water construction, except blasting, and should produce little, if any, additional expense. The guidelines are intended mainly to ensure that construction personnel are informed that manatees may occur in the work area, that work should cease if a manatee approaches the work area, work should not resume until the manatee leaves the work area, and to provide procedures for reporting the death or injury of a manatee. These guidelines are available on our web site at < http://nc- es.fws.gov/mammal/manatee guidelines pdf> and are attached for your records. The risk to manatees could be reduced to an acceptable level by the implementation of the Service's guidelines. The risk would be further reduced by performing the work during the period of November through May. While seasonal work restrictions would minimize potential direct impacts to manatees and the opportunity for sea turtle nesting, serious concerns remain about longer-term, adverse impacts on the quality of sea turtle nesting habitat. As noted, the proposed work poses a risk of creating a compacted beach which is darker than the beach which may have existed historically. These issues have not been addressed in the permit application or the PN. At this time, the Service cannot concur that the proposed work is not likely to adversely affect federally listed species. Therefore, we request that the Corps prepare a Biological Assessment for Service review prior to the issuance of any DA permit. Service Recommendations: The coordinated federal position (CFP) should recommend denial of the permit due to the fact that potentially significant adverse environmental impacts have not been adequately addressed. To fully address the impacts of the proposed work, the CFP should recommend that an Environmental Assessment (EA) be prepared in accordance with the National Environmental Policy Act (NEPA). Important aspects of this EA should include: 1. A discussion of alternative channel designs, such as reduced widths near intertidal shoals, which would eliminate the need to remove intertidal shoals. There should be a consideration of intertidal shoals and emergent wetlands which may be lost due to substrate sloughing, or slope equilibration, after dredging. If design modification cannot eliminate the direct and indirect loss of intertidal areas and wetlands, compensatory mitigation plans should be presented for these important areas of fish and wildlife habitat; 2. The presentation of the physical characteristics of beaches on Figure Eight Island prior to any placement of sound side sediment on the beaches. Such data, if available, should form the basis for determining the compatibility of the material currently being considered for beach placement rather than existing beach conditions which may reflect several past sediment placements; 3. A complete discussion of changes in the physical characteristics (e.g., loss of interstitial spaces, hardness/compaction, color, organic composition, and moisture content) of the beach which would occur if the proposed sediment placement occurs; 4. An evaluation of the potential for reduced food resources for shorebirds and nearshore fish if the proposed sediment placement diminishes populations of beach invertebrates such as Emerita and Donax after the interstitial spaces to which they are adapted are filled with silt and clay particles; A discussion of the potential for a reduction in the ability of the beach to serve as productive sea turtle nesting habitat. This discussion should address data referenced above which indicates that beach compaction reduces successful nest construction. Furthermore, incubation and hatching success can be reduced when sand grain size, density, shear resistance, color, gas diffusion rates, organic composition, and moisture content differ from natural beach sediment (Greene 2002, p. 30 and references therein); 8 6. An evaluation of the potential for the constructed beach to produce long-term turbidity due to proposed mixing of fine grain material with larger sand grains. The evaluation should consider both adverse impacts to feeding by nearshore fish and the survival of beach invertebrates which utilize nearshore waters; 7. An evaluation of potential adverse impacts to offshore benthic habitats, including hardbottoms, that may occur due to sedimentation of the fine grained material washed off the beach; 8. A discussion of the cumulative impacts of the dredging and sand placement in conjunction with similar work to be performed for the Mason Inlet Relocation Project. Since the applicant has proposed to coordinate this work with the first maintenance event of the Mason Inlet project, the EA should fully consider the overall biological, hydrological, and geological impacts of both projects; and, 9. Finally, there should be sufficient information on project impacts on the West Indian manatee and sea turtle nesting activities to allow the District Engineer to make a determination of project impacts on these species. The Service appreciates the opportunity to comment on this PN. If you have questions regarding these comments or wish to discuss the development of the coordinated federal position, please contact Howard Hall at 919-856-4520, ext. 27 or by e-mail at < howard_hall@fws.gov >. Please provide this office with a copy of the coordinated federal position, if one is developed. Sincerely, John Hammond Acting Ecological Services Supervisor Attachment Literature cited Bush, D. M., O. H. Pilkey, Jr., and W. J. Neal. 1996. Living by the Rules of the Sea. Duke University Press. Durham, North Carolina. 179 pp. Frankenberg, D. 1997. The Nature of North Carolina's Southern Coast: Barrier Islands, Coastal Waters, and Wetlands. The University of North Carolina Press. Chapel Hill. 250 pp. Goldberg, W. M. 1985. Long term effects of beach restoration in Brevard County, Florida, a three year overview. Unpublished Report to Broward County Environmental Quality 9 Control Board and Erosion Preservation District. (As reported in Goldberg 1988). Goldberg, W. M. 1988. Biological effects of beach restoration in South Florida: the good, the bad, and the ugly. In Tait, L.S. (ed). 1988. Beach preservation technology'88: problems and advancements in beach nourishment - proceedings. Florida Shore and Beach Preservation Association, Inc., Tallahassee, Florida. Greene, K. 2002. Beach Nourishment: A Review of the Biological and Physical Impacts. Atlantic States Marine Fisheries Commission. Washington, DC. 69 pp. + Appendices. National Marine Fisheries Service and U. S. Fish and Wildlife Service. 1991. Recovery plan for the U. S. population of Loggerhead turtle. National Marine Fisheries Service, Washington, DC. National Research Council. 1995. Beach Nourishment and Protection. National Academy Press. Washington, D.C. 334pp. Peterson, C. H. and N. M. Peterson. 1979. The ecology of intertidal flats of North Carolina: a community profile. U. S. Fish and Wildlife Service, Office of biological Services. FWS/OBS-79/39. 73pp. Pilkey, O. H., W. J. Neal, S. R. Riggs, C. A. Webb, D. M. Bush, D. F. Pilkey, J. Bullock, and B. A. Cowan. 1998. The North Carolina Shore and Its Barrier Islands - Restless Ribbons of Sand. Duke University Press. Durham, North Carolina. 318 pp. T. M. Rice, and W. J. Neal. 2004. How to Read a North Carolina Beach - Bubble Holes, Barking Sand, and Rippled Runnels. The University of north Carolina Press. Chapel Hill, North Carolina. 162 pp. Reilly, F.J. Jr., and V.J. Bellis. 1978. A study of the ecological impact of beach nourishment with dredged materials on the intertidal zone. East Carolina University Institute for Coastal and Marine Resources, Technical Report No. 4., Greenville, North Carolina. 107 PP• and . 1983. The Ecological Impact of Beach Dredging with Dredged Materials on the Intertidal Zone at Bogue Banks, North Carolina: Miscellaneous Report No. 83-3. March, 1983. U. S. Army, Corps of Engineers, Coastal Engineering Research Center, Fort Belvoir, Va. 74 p. Riggs, S. R. 1994. Nonliving resources. pp. 13-19. in Hart, K. (ed.) Managing the Coastal Ocean for the 21th Century: North Carolina's Role. A proceedings from a conference held May 20-21, 1993, University of North Carolina at Wilmington. N.C. Sea Grant Publication UNC-SG-94-02. 54 pp. 10 Ruppert, E. E. and R. S. Fox. 1988. Seashore Animals of the Southeast. University of South Carolina Press. Columbia, South Carolina. 429pp. U. S. Army Corps of Engineers. 1990 (revision). Final Feasibility Report and Environmental Impact Statement on Hurricane Protection and Beach Erosion Control - West Onslow Beach and New River Inlet North Carolina (Topsail Beach). Wilmington District, U. S. Army Corps of Engineers, Wilmington, NC. Various pagination. cc: Ronald Mikulak, US Environmental Protection Agency, Atlanta, GA Ron Sechler, National Marine Fisheries Service, Beaufort, NC Bennett Wynne, NC Wildlife Resources Commission, Kinston, NC Jim Gregson, NC Division of Coastal Management, Wilmington, NC Mike Street, NC Division of Marine Fisheries, Morehead City, NC John Dorney, NC Division of Water Quality, Raleigh, NC Ted Wilgis, NC Coastal Federation, Wilmington, NC ?_JITliiUnited States Department of the Interior FISH AND WILDLIFE SERVICE Raleigh Field Office ,a Post Office Box 33726 Raleigh, North Carolina 27636-3726 GUIDELINES FOR AVOIDING IMPACTS TO THE WEST INDIAN MANATEE Precautionary Measures for Construction Activities in North Carolina Waters The West Indian manatee (Trichechus manatus), also known as the Florida manatee, is a Federally-listed endangered aquatic mammal protected under the Endangered Species Act of 1973, as amended (16 U.S.C. 1531 et seq.) and the Marine Mammal Protection Act of 1972, as amended (16 U.S.C 1461 et seq.). The manatee is also listed as endangered under the North Carolina Endangered Species Act of 1987 (Article 25 of Chapter 113 of the General Statutes). The U.S. Fish and Wildlife Service (Service) is the lead Federal agency responsible for the protection and recovery of the West Indian manatee under the provisions of the Endangered Species Act. Adult manatees average 10 feet long and weigh about 2,200 pounds, although some individuals have been recorded at lengths greater than 13 feet and weighing as much as 3,500 pounds. Manatees are commonly found in fresh, brackish, or marine waterhabitats, including shallow coastal bays, lagoons, estuaries, and inland rivers of varying salinity extremes. Manatees spend much of their time underwater or partly submerged, making them difficult to detect even in shallow water. While the manatee's principal stronghold in the United States is Florida, the species is considered a seasonal inhabitant of North Carolina with most occurrences reported from June through October. To protect manatees in North Carolina, the Service's Raleigh Field Office has prepared precautionary measures for general construction activities in waters used by the species. Implementation of these measures will allow in-water projects which do not require blasting to proceed without adverse impacts to manatees. In addition, inclusion of these guidelines as conservation measures in a Biological Assessment or Biological Evaluation, or as part of the determination of impacts on the manatee in an environmental document prepared pursuant to the National Environmental Policy Act, will expedite the Service's review of the document for the fulfillment of requirements under Section 7 of the Endangered Species Act. These measures include: 1. The project manager and/or contractor will inform all personnel associated with the project that manatees may be present in the project area, and the need to avoid any harm to these endangered mammals. The project manager will ensure that all construction personnel know the general appearance of the species and their habit of moving about completely or partially submerged in shallow water. All construction personnel will be informed that they are responsible for observing water-related activities for the presence of manatees. 2. The project manager and/or the contractor will advise all construction personnel that there are civil and criminal penalties for harming, harassing, or killing manatees which are protected under the Marine Mammal Protection Act and the Endangered Species Act. 3. If a manatee is seen within 100 yards of the active construction and/or dredging operation or vessel movement, all appropriate precautions will be implemented to ensure protection of the manatee. These precautions will include the immediate shutdown of moving equipment if a manatee comes within 50 feet of the operational area of the equipment. Activities will not resume until the manatee has departed the project area on its own volition (i.e., it may not be herded or harassed from the area). 4. Any collision With and/or injury to a manatee will be reported immediately. The report must be made to the U.S. Fish and Wildlife Service (ph. 919.856.4520 ext. 16), the National Marine Fisheries Service (ph. 252.728.8762), and the North Carolina Wildlife Resources Commission (ph. 252.448.1546). 5. A sign will be posted in all vessels associated with the project where it is clearly visible to the vessel operator. The sign should state: CAUTION: The endangered manatee may occurin these waters duringthe warmer months, primarily from June through October. Idle speed is required if operating this vessel in shallowwater during these months. All equipment must be shut down if a manatee comes within 50 feet of the vessel or operating equipment. A collision with and/or injury to the manatee must be reported immediately to the U.S. Fish and Wildlife Service (919-856-4520 ext. 16), the National Marine Fisheries Service (252.728.8762), and the North Carolina Wildlife Resources Commission (252.448.1546). 6. The contractor will maintain a log detailing sightings, collisions, and/or injuries to manatees during project activities. Upon completion of the action, the project manager will prepare a report which summarizes all information on manatees encountered and submit the report to the Service's Raleigh Field Office. 7. All vessels associated with the construction project will operate at "no wake/idle" speeds at all times while in water where the draft of the vessel provides less than a four foot clearance from the bottom. All vessels will follow routes of deep water whenever possible. 8. If siltation barriers must be placed in shallow water, these barriers will be: (a) made of material in which manatees cannot become entangled; (b) secured in a manner that they cannot break free and entangle manatees; and, (c) regularly monitored to ensure that manatees have not become entangled. Barriers will be placed in a manner to allow manatees entry to or exit from essential habitat. Prepared by (rev. 06/2003): U.S. Fish and Wildlife Service Raleigh Field Office Post Office Box 33726 Raleigh, North Carolina 27636-3726 919/856-4520 Figure 1. The whole body of the West Indian manatee may be visible in clear water; but in the dark and muddy waters of coastal North Carolina, one normally sees only a small part of the head when the manatee raises its nose to breathe. ftTO Illustration used with the permission of the North Carolina State Museum of Natural Sciences. Source: Clark, M. K. 1987. Endangered, Threatened, and Rare Fauna of North Carolina: Part I. A re-evaluation of the mammals. Occasional Papers of the North Carolina Biological Survey 1987- 3. North Carolina State Museum of Natural Sciences. Raleigh, NC. pp. 52. A NCDENR North Carolina Department of Environment and Natural Resources Division of Coastal Management Michael F. Easley, Governor Charles S. Jones, Director William G. Ross Jr., Secretary June 11, 2004 MEMORANDUM: TO: John R. Dorney Environmental Biological Supervisor Division of Water Quality FROM: Doug Huggett Major Permits Processing Coordinator WETLANDS 1401 GROUP JUN 1 6 2004 WATER QUALITY SECTION SUBJECT: CAMA/DREDGE & FILL Permit Application Review Applicant: Figure 8 Beach Homeowners Assoc., Inc. Project Location: New Hanover County, Figure 8 Island, adjacent to the Atlantic Ocean and Middle Sound, between Rich and Masons Inlet, in northeast New Hanover County. Proposed Project: Proposes to complete maintenance dredging of previously authorized areas in Banks . Channel and the waterway connector channel, and also, complete maintenance dredging in the existing lagoon and canal areas. All of the excavated sediments would be utilized for renourishment of the beachfront (10,000 LF) at the south end of Figure 8 Island. Please indicate below your agency's position or viewpoint on the proposed project and return this form by July 1, 2004. If you have any questions regarding the proposed project, please contact Ed Brooks at (910) 395-3900. When appropriate, in-depth comments with supporting data is requested. REPLY: This agency has no objection to the project as proposed. This agency has no comment on the proposed project. This agency approves of the project only if the recommended changes are incorporated. See attached. This agency objects to the project for reasons described in the attached comments. SIGNED DATE 127 Cardinal Drive Ext., Wilmington, North Carolina 28405-3845 Phone: 910-395-39001 FAX: 910-350-20041 Internet: www.nccoastalmanagement.net An Equal opportunity 1 Affirmative Action Employer - 50% Recycled 110% Post Consumer Paper r , DIVISION OF COASTAL MANAGEMENT FIELD INVESTIGATION REPORT 1. APPLICANT'S NAME: Figure 8 Beach Homeowners Assoc., Inc. 2. LOCATION OF PROJECT SITE: Figure 8 Island, adjacent to the Atlantic Ocean and Middle Sound, between Rich and Masons Inlets, in northeast New Hanover County. Photo Index-- 2000: 24 Photos 310-312 1995: 24 Photos 292-296 1989: 4 176 Photos 15-18_ State Plane Coordinates - X: 2365200 Y:018200 Rover file: S-051119A 3. INVESTIGATION TYPE: CAMA-& D&F 4. PROCESSING PROCEDURE: Application Received - 4/26/04 Office - Wilmington 5. SITE DESCRIPTION: (A) Local Land Use Plan - New Hanover Co. Land Classification From LUP - Conservation (B) AEC(s) Involved: EW, PT, OH Water Dependent: Yes (D) Intended Use: Private/Community (E) Wastewater Treatment: Existing - Individual septic tanks Planned - N/A (F) Type of Structures: Existing - Single-family residences Planned - N/A (G) Estimated Annual Rate of Erosion: 2 ft./yr. Source - 1998 LTAASCR 6. HABITAT DESCRIPTION: [AREA] DREDGED FILLED OTHER (A) Vegetated Wetlands (B) Non-Vegetated Wetlands - 2,481,250 sf Subtidal shallow bottom 1,000,000 sf Intertidal beach surf zone (C) Other - Upper beach area 1,000,000 sf (D) Total Area Disturbed: 4,481,250 sf (102.9 acres) (E) Primary Nursery Area: No (F) Water Classification: SA-ORW Open: YES 7. PROJECT SUMMARY: The applicants propose to complete maintenance dredging of previously authorized areas in Banks Channel and the waterway connector channel, and also, complete maintenance dredging in the existing lagoon and canal areas. All of the excavated sediments would be utilized for renourishment of the beaclhfront (10,000 LF) at the south end of Figure 8 Island. Figure 8 Homeowners Assoc., Inc. Page 2 8. PROJECT DESCRIPTION Figure 8 Island is a private residential barrier island located in the northeast corner of New Hanover County, adjacent to the Atlantic Ocean and Middle Sound, between Mason and Rich Inlets. The island is accessed from the mainland at the end of Edgewater Club Road (SR 1402), by a private bridge over the Atlantic Intracoastal Waterway (AIWW) and an earthen causeway which traverses Middle Sound. In the project area, the NC Division of Water Quality classifies the waters of the Atlantic Ocean as SB. The waters of Banks Channel, Middle Sound and the AIWW are classified as SA-ORW, and they are OPEN to the harvest ofshellfish. The extensive salt marshes between Figure 8-Islandmandwine Atlantic Intracoastal Waterway are designated as Primary Nursery Area (PNA), by the NC Division of Marine Fisheries, however, in the area of the proposed maintenance dredging, the open water areas of Banks Channel, the finger canals and the waterway connection channel are not designated as PNAs. Over the years, the Figure 8 Beach Homeowners Association have obtained a number of State permits for channel maintenance, beach renourishment, and beach bulldozing. In 1989, the Association initiated the development of a long range plan that addressed channel maintenance and beach restoration on an island- wide basis. The resulting State permits, 426-92 and #21-93, authorized channel maintenance projects at the north and south ends of the island, both with beach deposition of excavated materials. This beach reconstruction project was completed in 1993. The hurricanes of the mid to late 1990's caused extensive damage and created serious erosion of the beach on Figure 8 Island. In March 1998, the applicants were issued State Permit #29-98 authorizing the maintenance dredging of Banks Channel, with beach disposal of the excavated material (previously State Permit #26-92). Subsequently, in 1999, the applicants received State Permit # 12-99 to excavate an existing USACOE spoil disposal island adjacent to the AIWW, and pump the material to the beach at the middle of Figure 8 Island. In 2001, Permit #6-01 was issued to the applicants to dredge a portion of Nixon Channel and renourish the beach at the north end of Figure 8 Island (previously State Permit #21-93). In addition to their own permits, the beach on the southern end of Figure 8 Island was a permitted disposal area for a portion of the beach compatible sands generated from New Hanover County's Mason Inlet Relocation Project (State Permit # 151-01). That renourishment activity was completed in 2002, however, future maintenance dredging associated with that project may again propose to utilize the south end of Figure 8 Island as a disposal area for beach compatible spoils material. The current application proposes to re-establish safe navigation by completing maintenance dredging of the previously authorized channels (State Permits #26-92 & #29-98) and add the four existing (4) canal/lagoons to the area to be maintained. The lagoon and canal systems were originally constructed during the early development of the island and have not needed large-scale maintenance dredging in the past. In fact, except for the shoaling of the entrances to the lagoons (Sounds Point and Salt Meadow), very little dredging is proposed in the lagoon/canal areas. The applicant has included them with this application in an effort to present a comprehensive picture of the island's present and future maintenance dredging needs to be able to maintain existing navigational corridors around the island. All of the excavated material would be used for beach renourishment. The applicant has completed a series of test borings in the proposed dredge area and submitted grain size analysis data of the test results. Grain sizes of the sediments in the canal/lagoon systems were smaller than the beach sands. The applicant proposes that if significant pockets of extremely fine sediments are encountered, they can be compartmentalized in a temporary dike on the upper dry sand beach, dewatered and mechanically mixed by dozers prior to final grading. Figure 8 Homeowners Assoc., Inc. Page 3 The proposed project includes the following areas: 1. Banks Channel - 7,750' X 125' X -9' MLW. 2. Waterway Connector Channel - 1,850' X 125' X -9' MLW. This includes the 600 LF section connected to Banks Channel, the 800 LF section previously permitted at the channel's connection to the AIWW, and a proposed 450 LF extension on the east end of the waterway connection channel. 3. Backfin/Causeway Canal - 2,450' X 125' X -9' MLW 4. Sandy Point Canal - 2,200' X 125' X -9' MLW 5. Backfin Canal - 1,700' X 100' X -9' MLW 6. Sounds Point Lagoon - 800' X125' X 9' MLW Sounds Point Lagoon Entrance - 200' X 300' tapering to 100' X -9' MLW 7. Salt Meadow Lagoon - 2,800' X 125' X -9' MLW Salt Meadow Lagoon Entrance - 200' X 300' tapering to 100' X -9' MLW All excavation would be completed by hydraulic pipeline dredge. The south end of the project would terminate approximately 200 feet south of the southern-most lagoon (Sounds Point), as authorized in the 1998 permit (#29-98). The excavated sand sediments would be pumped to the southern end of the Figure 8 Island oceanfront (up to 10,000 LF) to be utilized in beach renourishment and reconstruction. The resulting beach profile is anticipated to be a continuous bean, constructed to approximately 9.5 feet elevation, with a minimum width of 100 feet, tapering toward the ocean at an approximate 20:1 slope. It is estimated that approximately 230,000 cubic yards of medium to fine grain sandy material would be generated from the proposed maintenance excavation. 9. ANTICIPATED IMPACTS The project would result in the excavation of 2,481,250 square feet (56.96 acres) of subtidal, shallow bottom within the combined project areas of Banks Channel, the waterway connector channel, and the canal/lagoon system. Approximately 56,628 square feet (1.3 acres) of that total would be inter-tidal sand flats. The only area not previously authorized for excavation is the proposed extension of the waterway connection channel (450' X 125' X -9' MLW). The projected 230,000 cubic yards of dredged sand sediments would be placed on the southern end of Figure 8 Island's upper beach shoreline (10,000' X ±200'). The dredging and beach renourishment activities would create short-term turbidity, as well as, impact the intertidal macro fauna and benthic communities within the proposed excavation and spoil disposal areas. The applicant contends that adverse impacts would be minimized by timing the project to avoid periods of peak biological activity and outside of sea turtle nesting season, and that affected species populations would return to pre-project distributions within one or two years. The applicant's consultants have presented their assessment of all of the project's environmental impacts in Appendix 5A. Channel maintenance would promote and improve navigation in the badly shoaled Banks Channel. The project would serve to reconstruct and renourish the beach on the southern end of Figure 8 Island, thus affording additional protection to oceanfront property owners from seasonal and storm erosion. Submitted by: E.F. Brooks Date: 6/10/04 Office: Wilmington ' PERMIT APPLICATION MAINTENANCE DREDGING OF ' BANKS CHANNEL AND CONNECTING WATERS ' FIGURE "8" BEACH HOMEOWNERS ASSOCIATION ' Figure Eight Island WETLANDS 1401 GROUP Wilmington, North Carolina 4)Uty 1 6 2004 APRIL 2004 WATER QUALITY SECTION `' 6 2004 LPNG ' A4 4-212F JOE ' CRISER & TROUTMAN CONSULTING ENGINEERS w4w)ME 11 pp- 3809 PEACHTREE AVENUE, SUITE 102 • BOX 3727 • WILMINGTON, NC 28406 ' (910) 397-2929 FAX (910) 397-2971 #5272 TABLE OF CONTENTS Letters of Transmittal DCM Form MP-1: Permit Application DCM Form MP-2 Excavation and Fill Appendix 3D: Narrative Description Appendix 5A: Environmental Impacts Appendix 5B: Drawings C1 through C13 Appendix 5D: Adjacent Riparian Property Owners Adjacent Property Owner Waiver Form Appendix 5H: Statement of Compliance with N.C Environmental Policy Appendix 6A: Report of Soil Testing by ECS, Ltd. COp,g?tP?- M FOR PERMITS TO DEVELOP IN NORTH CAROLINA'S COASTAL AREA COMPLETE THIS FORM TO BEGIN THEAPPUCATION PROCESS UNDER THE LAWS USTED BELOW: 4?s•;W ?•' ?. r? :?\Jf i Y ?lli '• ?J•::' •,.. ,:'K 'tis; % 3 ? •i?. 'lt'r? ? ^ t %7W i ?. 611, ?t'?tis ?•r ?, STATE Coastal Area Management Act (CAMA) N.C.G.S.113A-118 Dredge and Fill N.C.G.S.113-229 Water Quality Certification N.C.G.S.143-215 Easements in Land Covered by Water N.C.G.S.146-6,146-12 FEDERAL Construction, Dredging, Filling, or Other Work in Navigable Waters Section 10 of the Rivers and Harbors Act of 1899 Discharge Dredged or Fill Material into any Waters or Wetlands Section 404 of the Clean Water Act D?v15?ON GEME?` . ro ?STR? ? AN DIVISION OF COASTAL MANAGEMENT NOR,H CAROUNA Dept. of Environment, Health and Natural Resources Forms DCM•MP-1-MP-6 JANUARY 1995 I Form DCM-MP-1 i d ;1 L14 PLICATION?-'?I AP 1 (To be completed by all applicants) APR 16 2004 DIVISION OF NAGEME? I mark b. City, town common d 1. APPLICANT FIGURE EIGHT ISLAND ' c. Street address or secondary road number ADJACENT TO BEACH ROAD SOUTH (FIGURE 8 ISLAND) a. Landowner: Name FIGURE "8" BEACH HOMEOWNERS ASSOCIATION d. Is proposed work within city limits or planning jurisdiction? X_ Yes No Address 15 BRIDGE ROAD City WILMINGTON State NC e. Name of body of water nearest project (e.g. river, creek, sound, bay) ATLANTIC OCEAN AND MASON INLET_ Zip 28411 Day Phone (910) 686-0635 Fax (910) 686-1558 3. DESCRIPTION AND PLANNED USE I' OF PROPOSED PROJECT b. Authorized Agent: I' Name DAVID KELLAM a. List all development activities you propose (e.g. building a home, motel, marina, bulkhead, pier, and 15 BRIDGE ROAD excavation and/Or filling activities. Address EXCAVATION (DREDGING) OF BANKS CHANNEL AND CONNECTING II' CHANNELS & BAYS & DISPOSING ON FIGURE 8 BEACHES AS City WILMINGTON State NC BEACH RE-BUILDING. ' 28411 686-0635 Zip Day Phone (910) b. Is the proposed activity maintenance of an existing project, new work, or both? EXISTING PROJECT Fax (910) 686-1558 ' c. Project name (if any) MAINTENANCE DREDGING OF BANKS CHANNEL AND CONNECTING CHANNELS AND BAYS. 1VID7L': Panic will be isnod in now of lmdowner(s), cad/or Project rAw. c. Will the project be for public, private or commercial use? -PUBLIC DREDGING; PUBLIC/PRIVATE-BEACH FILLING d. Give a brief description of purpose, use, methods of construction and daily operations of proposed project. If more space is needed, lease attach additional pages. CHANNEL MAINTENANCE WILL ENABLE RE-USE OF SHOALED AREAS AND INCREASED AND IMPROVED 2. LOCATION OF PROPOSED PROJECT a. County NEW HANOVER USE OF EXISTING NAVIGATION CHANNELS; BEACH RENOURISHMENT WILL ENHANCE RECREATIONAL USAGE OF THE BEACH AND HELP COUNTER EROSION PROCESSES. EXCAVATION WILL BE BY HYDRAULIC PIPELINE DREDGE. DREDGED SAND WILL BE CONVEYED BY PIPELINE TO THE OCEAN BEACH FOR PLACEMENT SEAWARD OF VEGETATIONIESCARPMENT. SEE A1212ENDIX 3D I Form DCM-MP-1 4. LAND AND WATER CHARACTERISTICS a. Size of entire tract *SEE ATTACHMENT A AND ATTACHED MAPS. b. Size of individual tot(s) SEE ATTACHED MAPS. c. Approximate elevation of tract above MHW or NWL DREDGE AREAS VARY FROM-2 TO-9. FIGURE EIGHT ISLAND VARIES FROM 0 TO 12. d. Soil type(s) and texture(s) of tract NEW HAN FINE SAND; MADELAND; NATURAL BEACH/FOREDUNE e. Vegetation on tract NO VEGETATION IN AR AS TO RF DRFDGFD NO VFGFTATION IN FII I ARFAR f. Man-made features now on tract BEACHFRONT HOMES DUNE CROSSOVERS, SOUND FRONT HOMES ROADS I ANMCAPINR g. What is the CAMA Land Use Plan land classification of the site? (cauuh tbs tocw /med use pian.) X Conservation Transitional Developed Community Rural Other h. How is the tract zoned by local government? WATER AND BEACH UNZONED, LOTS R-205 ' i. Is the proposed project consistent with the applicable 1. Are there wetlands on the site? Yes „X,_ No Coastal (marsh) Other I' If yes, has a delineation been conducted? ? mwnwdon, Jra%41abk) (Anode do f zoning? X Yes No (Anode toeing rnegpiiann e?r?rileao?e, Uapplitaabk) j. Has a professional archaeological assessment been done for the tract? Yes _Y No If yes, by whom? k. Is the project located in a National Registered Historic District or does it involve a National Register listed or eligible property? Yes X No DIVISIONgqOFEE en ac>< >It>les. m. Describe existing %fi Ava?" lac&tff NIA n., Describe location and type of discharges to waters of the state. (For example, surface runoff, sanitary wastewater, industrial/commercial effluent, "wash down" and residential discharges.) PROJECT WILL NOT CHANGE ANY EXISTING STRUCTURAL DEVELOPMENT. SAND DEPOSITED ON BEACH BY HYDRAULIC DREDGE WILL RESULT IN EFFLUENT FROM DREDGE PIPE RETURNING TO OCEAN ADJACENT TO DISCHARGE POINTS. o. Describe existing drinking water supply source. COMMUNITY WATER SYSTEM-DEEP WELLS 5. ADDITIONAL INFORMATION In addition to the completed application form, the following items must be submitted: • A copy of the deed (with state application only) or other instrument under which the applicant claims title to the affected properties. If the applicant is not claiming to be the owner of said property, then forward a copy of the deed or other instrument under which the owner claims title, plus written permission from the owner to carry out the project. • An accurate, dated work plat (including plan view and cross-sectional drawings) drawn to scale in black ink on an 8 1/2" by 11" white paper. (Refer to Coastal Resources Commission Rule 7J.0203 for a detailed description.) Please note that original drawings are preferred and only high quality copies will be accepted. Blue-line prints or other larger plats are acceptable only if an adequate number of quality copies are provided by applicant. (Contact the U.S. Army Corps of Engineers regarding that agency's use of larger drawings.) A site or location map is a part of plat requirements and it must be sufficiently detailed to guide agency personnel unfamiliar with the area to the APR 16 2004 Form DCM-MP-1 site. Include highway or secondary road (SR) numbers, landmarks, and the like. • A Stormwater Certification, if one is necessary. 110 A list of the names and complete addresses of the adjacent waterfront (riparian) landowners and ' signed return receipts as proof that such owners have received a copy of the application and plats by certified mail. Such landowners must be advised that they have 30 days in which to submit comments on the proposed project to the Division of Coastal Management. Upon signing this form, the applicant further certifies that such notice has been provided. ALL PROPERTY OWNERS ON FIGURE EIGHT SOUTH OF Name CAUSEWAY ' Address WILL BE NOTIFIED BY CERTIFIED MAIL. Phone Name ' Address Phone SEE ATTACHED LIST-APPENDIX 5D TO MP-1 ' Name Address Phone ' • A list of previous state or federal permits issued for work on the project tract. Include permit numbers, ' permittee, and issuing dates. SEE ATTACHMENT B. TO MP-1 • A check for $_ made payable to the Department of ' Environment, Health, and Natural Resources (DEHNR) to cover the costs of processing the application. ' • A signed AEC hazard notice for projects in oceanfront and inlet areas. • A statement of compliance with the N.C. Environmental Policy Ad (N.C.G.S. 113A - 1 to ' 10) If the project involves the expenditure of public funds or use of public land, attach a statement documenting compliance with the North Carolina ' Environmental Policy Act. 6. CERTIFICATION AND PERMISSION TO ENTER ON LAND I understand that any permit issued in response to this application will allow only the development described in the application. The project will be subject to conditions and restrictions contained in the permit. I certify that to the best of my knowledge, the proposed activity complies with the State of North Carolina's approved Coastal Management Program and will be conducted in a manner consistent with such program. I certify that I am authorized to grant, and do in fact, grant permission to representatives of state and federal review agencies to enter on the aforementioned lands in connection with evaluating information related to this permit application and follow-up monitoring of the Project- I further certify that the information provided in this application is truthful to the best of my knowledge. This is the 15th day of April , 2004 Print Name Signature Landowner or Awho?iW Agent Administrator Figure 8 Beach Homeowners Association, Inc. Please indicate attachments pertaining to your proposed project. X DCM MP-2 Excavation and Fill Information DCM MP-3 Upland Development DCM MP-4 Structures Information DCM MP-5 Bridges and Culverts DCM MP-6 Marina Development NOTE: Please sign and date each attachmenvin the space provided at the bo. 6 °. \ J ?S?sN PG'EM Form DCM-MP-2 i 1EXCAVATION FILL AND ' (Except bridges and culverts) ' Attach this form to Joint Application for CAMA Major Permit, Form DCM-MP-1. Be sure to complete all other sections of the Joint Application that relate to this ' proposed project. Describe below the purpose of proposed excavation or ' fill activities. All values to be given in feet. Average Final Existing Project ' Access channel (MLW) or (NWL) Canal Banks channel SEE ATTACHMENT A OF MP EIN BEFORE basin Boat ramp Rock groin Rock ' breakwater ?HANWWAYS (Excluding shoreline stabilization) Ltngtb width vepm 9,600 125' 3.5' MLVA 9' MLW 125' 1 3.5' MLWI 9' MLWI ' WATERWAY CONNECTOR D 7C7HVF All 112111 DIVISION OF COASTAL MANAGEMENT 2. EXCAVATION a. Amount of material to be excavated from below MHW or NWL in cubic yards gin ooo c_v ** SEE NEXT PAGE b. Type of material to be excavated FINE TO MEDIUM SAND. SEE APPENDIX 1.6 TO MP-2 c. Does the area to be excavated include coastal wetlands (marsh), submerged aquatic vegetation (SAVs) or other wetlands? Yes X No d. Highground excavation in cubic yards NONE 2. DISPOSAL OF EXCAVATED MATERIAL a. Location of disposal area uPP R RFAcH b. Dimensions of disposal area UP TO 10,000 LF OF OCEAN BEACH c. Do you claim title to disposal area? Yes _ x No If no, attach a letter granting permission from the owner. d. Will a disposal area be available for future maintenance? X Yes No If yes, where? SAME BEACH AREA Revised 03/95 Form DCM-MP-2 e. Does the disposal area include any coastal wetlands (marsh), SAVs or other wetlands? ' Yes X No UPPER BEACH FORESHORE ONLY NO VEGETATED WETLANDS f. Does the disposal include any area in the water? X Yes No II' 3. SHORELINE STABILIZATION NIA a. Type of shoreline stabilization Bulkhead Riprap b. Length NIA c. Average distance waterward of MHW or NWL NIA d. Maximum distance waterward of MHW or NWL N/A - - e. Shoreline erAosion during preceding 12 months ' (Source of Wor"Wdon) - I f. Type of bulkhead or riprap material NIA g. Amount of fill in cubic yards to be placed below II' water level (1) Riprap NIA (2) Bulkhead backfill NIA 1 h. Type of fill material NIA Source of fill material NIA 4. OTHER FILL ACTIVITIES (Excluding Shoreline Stabilization) a. Will fill material be brought to site? _ x Yes No if yes, (1) Amount of material to be placed in the water INDFTFRMINAT (2) Dimensions of fill area LESS THAN 50 CY ILF IN BASE AREA OF 150' UP TO EL +. 5 (3) Purpose of fill To RE6 II D RODFD RFCRFATIONAI IRFC B ACH PROVIDE STORM PROTFCTION FOR CTRLW . DISPOSE OF MATERIAL FROM NAVIGATION PROJECT. b. Will fill material be placed in coastal wetlands (marsh), SAVs or other wetlands? Yes _ X No if yes, (1) Dimensions of fill area LIPPER FOREsm Rg E WIDTH VARIES 0 TO 150' (2) Purpose of fill TO RFRI III D FRODFD RF!`RFATIl1Nw BEACH AND PROVIDE STORM PROTECTION FOR STRUCTURES 5. GENERAL a. How will excavated or fill material be kept on site and erosion controlled? EFFLUENT BERM WILL BE CONSTRUCTED PARALLEL TO SHORE LINE _ BY DOZER ON RFAWARD EDGE OF EACH Fu L„ EFFLUENT BERM WILL BE MAINTAINED IN ADVANCE OF DISCHARGE POINT A MINIMUM DISTANCE OF 200'. b. What type of construction equipment will be used (for example, dragline, backhoe, or hydraulic dredge)? HYDRAULIC DREDGE DOZER BACKHOE c. Will wetlands be crassed in transporting equipment to project site? Yes x No If yes, explain steps that will be taken to lessen environmental T L HORELINE WILL BE CROSSED ONLY WHERE NO IMGTAM XI C/ IF V )'_1r ?- D orA" N3* ^ 'VA(3EMEN7- APRIL 15, 2004 Date ATTACHMENT A RE: Par 4a Banks Channel Waterway Connector Channel Sandy Point Channel Backfin Channel Sound Point Lagoon Entrance Salt Meadow Lagoon Entrance Sound Point Bay Salt Meadow Bay Backfin/Causeway Bay 7,750' x 125' 1,850'x 125' 2,200' x 125' 1,700' x (80' to 100') 200' (300' tapered to 100') 200' (300' tapered to 100') 800' x 125' 2,800' x 125' 2,450' x 125' IN APR 16 203'4 DIVISION OF COASTAL MANAGEMENT 5272-1 1&04 ATTACHMENT B TO FORM DCM-MP-1 Corps of Engineers Permit 12-66, issued to Island Development Corporation March 20, 1967, (canals adjacent to Sandy Point and Backfin Point I' PeninsulasCorps of Engineers Permit 5-69, issued to Island Development Corporation January 28, 1969, (Banks Channel - length not defined, 300' top Width and 180' bottom width to -18' MLW) CAMA Permit 11-85, issued to Charles Winston, et al, March 21, 1985 (Banks Channel in vicinity of Sound Point Lagoon, 950' x 180') CAMA Permit 26-92 (Fed. I.D. 199000245) issued to Figure "8" Beach Homeowners' Association, Inc., February 27, 1992, (5,500' x 125' X-9') CAMA Minor Modification Permit 26-92, issued to Figure "8" Beach Homeowners' Association, Inc., May 13, 1992, (adds entrances to Lagoons 500 x 60 x (-9 - 6) MLW) CAMA Major Modification Permit 26-92, issued to Figure "8" Beach Homeowners Association, Inc., November 25, 1992 (added 4,800' Section of Banks Channel north of original permit and 800' Section of Waterway Connector adjacent to AIWW) CAMA Permit 29-98, issued to Figure "8" Beach Homeowners' Association, Inc., March 2, 1998 (8,200' x 125' x -9' for Banks Channel maintenance and intersection of Waterway Connector and AIWW and Entrances to two lagoons 200' x (300' tapering to 100') x -9' MLW) 0, 6 ti0 O PQR ? o f ??NC \ J\s? P PGE PO P?? GO Z O V W ?ooa ?,QR 16 N of M?N? Q ow?N\oNPGE Z GO Psi P?- O M Z 4. Q NARRATIVE DESCRIPTION MAINTENANCE DREDGING (BANKS CHANNEL ' BEACH RE-BUILDING FIGURE EIGHT ISLAND, NORTH CAROLINA APR 6 ' pIVIS?ON ? EMENT Background CDASTA- MANA ' The small boat and navigation access channels which connect Banks Channel and connecting bays with the Atlantic Intracoastal Waterway (AIWW) have shoaled ' and shifted since Hurricanes Fran and Bertha in 1996, Bonnie in 1998, and Dennis and Floyd in 1999, making navigation difficult and dangerous. Correspondingly, the oceanfront of Figure Eight Island has suffered an accelerated rate of erosion, depleting ' material on the open beach and seriously eroding the primary dunes on the upper beach in this area. ' The proposed project is for the maintenance of the navigation channel and the rebuilding of the ocean beaches on the southern portion of Figure Eight Island. The area to be dredged is the same area previously dredged in prior projects with the ' possible exception of a portion of the channel that connects Banks Channel to the Atlantic Intracoastal Waterway ("Waterway Connector Channel"). There is no known documentation of whether this connector channel has been dredged, but it has been ' continuously used for navigation since Figure Eight was developed beginning in the mid-to-late 1960s. The channel existed as a natural channel prior to the 1960s and its use by fishermen, hunters and other recreational users prior to the development of ' Figure Eight is known to older residents of the area. This navigation channel currently serves as the only viable connector to the Intracoastal Waterway for 197 sound side property owners. An 800' section of the connector channel beginning at the AIWW has t been previously dredged. The remaining portion of the waterway connector is approximately 2,900'. ' The history of permits for the navigation channel is set forth in Attachment B to Form MP-1. The history discloses that much of the navigation channel was dredged during the original development in 1969 with a 300' authorized width and a -18' ' authorized depth. A small project by consortium of homeowners was implemented in 1985 primarily for the purpose of obtaining sand for an experimental beach protection project. ' The original 1992 permit authorized the dredging of a 125' x 5,500' channel behind the southern end of Figure Eight with the southern extent of dredging extending to the 1992 location of Mason Inlet. The 1992 project was twice modified. The first modification added the entrances to the two lagoons. The second modification ' extended the project northward to cover all of Banks Channel as well as an 800' long area where the waterway connector meets the AIWW. In 1992 Mason Inlet was located slightly farther south than its current location. ' The permit apparently allowed connection of the southern end of the channel to the throat of Mason Inlet, but the actual dredging stopped a few hundred feet north due ' to lack of funds and contractual commitments. NARRATIVE DESCRIPTION 5272 - 4.13.04 Page 1 ' The 1998 permit allowed dredging in the same location and to the same dimensions as the modified 1992 permit with the exception that the dredging was terminated 200' south of the southern lagoon rather than extending southward to the 1992 location of Mason Inlet. The 1998 permit also allowed wider and deeper connections between the two lagoons and Banks Channel. Figure Eight did the work authorized in the '98 permit but dredged only -6' MLW due to an agreement with Shell Island Resort. All of the prior projects resulted in disposal of the dredged sand on the ocean beaches of Figure Eight south of the causeway. The 1969 permit may have ' also resulted in disposal of sand on upland areas other than the active ocean beach. Project Description ' Maintenance dredging is proposed in the sub-tidal shoal areas in the generally open water area of Banks Channel and the Waterway Connector Channel. There are one or two small areas where the shoal areas may be intertidal. Banks Channel and the Waterway Connector Channel are the primary navigation channels as well as the ' main hydraulic channels for the sound area behind Figure Eight. These channels have been relatively stable through the years but hurricane activity mentioned before, which had high water beach overwash along with storm-level erosion, created some ' redistribution of shore and bottom sediments. Also the long term instability of Mason Inlet as it migrated southward contributed to a higher level of sediments to the navigation channels. In 2002 the Inlet Relocation Project created another unstable condition at the inlet and its sediment basins and resulted in more sediments being fed into the navigation channel. ' The creeks connecting to Banks Channel have been choked in some locations due to this higher level of sedimentation. This project will offer the additional benefit of restoring flows so as to allow natural processes to rechannel these creek mouths. ' All of the sand materials removed will be discharged along approximately 10,000 linear feet of beachfront, extending from the southernmost lots northward. A ' transition adapted to the existing beach profile approximately 300 to 400 feet long will be provided at both ends of the beach fill. The basic dimensions of the beach fill will be to an elevation of approximately 9.5' mean sea level (MSL) with a berm width of at ' least 100'. The ocean side of the berm will be shaped to an approximately 20:1 slope between elevation 7 and -2.0' MSL (see sheets 1 and 3 of the permit application for sketches of beach fill location and proposed beach profile). It is estimated that ' approximately 230,000 cubic yards of medium to fine sand materials will be excavated from the proposed area to be dredged by hydraulic pipeline dredge. The material will be transported by the dredge pipeline and deposited along the beachfront using a temporary protective berm parallel to the shoreline to control the effluent run-o rte, ensuring maximum upland beach deposition of the material and minimizing i i within the surf zone. r I I NARRATIVE DESCRIPTION 5272 - 4.13.04 Page 2 n \SOA O PSG PN- M P G All excavations are to be done by hydraulic pipeline dredge. All materials excavated will be ' pumped to selected beach locations to reconstruct the beach sections as described above. Pipe- line corridors will be established to ensure that no marsh areas or sensitive vegetation will be crossed during the operation. All dredging will-be done during the winter season when biological ' activities in both the sound and beach areas will be at a minimum. ' Test borings and sand samples were taken during March 2004 along the length of the pro- posed channel maintenance dredging areas and on the ocean beach as shown on the sample lo- cation map of the attached report (Appendix 6a). The sampling and testing were done by an in- dependent geotechnical contractor with one sample extracted from the near-bottom area and a second sample at -9 MLW. A grain size analysis of the materials sampled is attached hereto. Current visual observation of the areas to be dredged and visual observation of the material ' dredged in 1999 indicate that the current sediments are essentially the same as those dredged in 1993 and 1999. ' The median grain size has been compared for all of the sample locations and are tabulated as follows: DEPTH SAMPLE SURFACE EXIST. BOTTOM -9 MLW B-1 0.23 B-2 0.25 B-3 0.23 B-4 0.35 S-1 0.19 0.22 S-2 0.38 0.25 S-3 0.20 0.20 S-4 0.20 0.18 S-5 - 0.19 S-6 0.14 0.39 S-7 0.20 0.24 S-8 - 0.18 S-9 0.19 0.13 S-10 0.19 0.18 S-11 0.18 0.20 S-12 - 0.18 S-13 - 0.20 S-14 - 0.18 S-15 - 0.17 S-16 0.19 - S-17 0.13 - If S-18 Silt S-19 - -02 . 0. S-20 - Silt C5 1 NARRATIVE DESCRIPTION 5272 - 4.13.04 Page 3 PQ of ENS PNPOC-wM PSG P?- M C V ?Qr C 1 J Q W Z ? ?z o o ?? ?° O`? Z W Q a? Q DoT W a Q J u Environmental Impacts APPENDIX 5A General In general, the environmental impacts resulting from the work proposed in this project will be relatively minimal in that all the work will be accomplished during the winter season when biologic activities are at a minimum. Channel bottom areas that will be disturbed during dredging operations have either been previously dredged during the original island development and channel maintenance operations or used continuously for navigation purposes. The run of Banks Channel north and west to the Intracoastal Waterway represents the primary means of access to regional fishing areas and navigable ocean inlets for boat owners on the southern half of Figure Eight Island. Banks Channel is also a protected area for water skiing. Waterway Connection Along with the dredging of the main run of Banks Channel, CAMA Permit 29-98 also authorized an 800' long dredging area from the Intracoastal Waterway into the northwest end of the connector to Banks Channel. The current proposal includes this 800' segment with a 450' extension to the east to cover an area currently shoaled to less than -5' mlw. This is the most shallow channel area between the waterway and Banks Channel and currently impacts navigation for larger boats. The applicant is currently coordinating with NCDMF to perform a shellfish survey within the 450' extension to determine the presence and abundance of any resource. Navigation/Shoaliniz In 2002, New Hanover County moved Mason inlet approximately 3000' north of its former location. Since that time, the inshore areas have experienced significant sand deposition with the formation of the flood shoal system. Currently, extensive shoal areas exist from roughly the location of the entrance to the southern lagoon southward for a distance of over 2000' to the inlet and entrance to Mason Creek. The proposed excavation area for this portion of the project has been designed to minimize impacts to intertidal shoals by generally aligning with the 0' mlw contour at the southern extent as shown on sheet C7. Excavation will not extend beyond 200' south of the southern lagoon entrance. Navigation from Banks Channel to the south to reach either the ocean through Mason Inlet or the waterway through Mason Creek will continue to be unreliable and potentially hazardous. The applicant understands that New Hanover County will be moving forward with seeking ' authorization for the first maintenance event for the Mason Inlet Relocation Project. While .s a separate, distinct project with a different purpose, the applicant is willing to coordina it h ' County in an attempt to utilize the same dredging contractor to perform both pr . e single mobilization effort, provided that both projects are authorized for e dredgin season. This coordination has the potential to minimize overall disturbanc 5272 - 4.22.04 \Cb 5(P 00P 1 I 0 Lagoons and Canals The lagoons and canal system originally formed during island development are proposed to be maintained as part of the project. At present, the lagoon entrances are impacted by subtidal shoaling, which inhibits tidal circulation and could impact the levels of dissolved oxygen within the lagoons. Clearing shoals from the lagoon mouths will provide optimal flushing and navigation safety. Beach Disposal Much of the area to be dredged consists of deposited sand set into motion by hurricane activity and the relocation of Mason Inlet. The origin of most of the material to be dredged from Banks Channel is the ocean beach itself. Through littoral drift, flood shoal formation processes and storm effects, the sand has accumulated most noticeably within the southern quarter of the proposed dredging area. Soil samples were taken in March, 2004 to determine the relative soil characteristics of the beach and sound area. Beach samples tested similar to those taken in 1992 with that near the southern end slightly finer (in gradation) than that from the center of the beach segment. Samples taken in Banks Channel show a slightly smaller median grain size than that from the beach strand. This can be explained as a normal indication of the smaller particles becoming water-borne and carried inside the inlet to form alluvial deposits. Grain sizes within the interior lagoons and canals are also smaller than beach sands. It is felt however that a portion of these smaller particles will serve to infill the larger voids within the sand on the beach while the remaining suspended particles will settle fairly rapidly in down-drift areas. Should pockets of extremely fine sediments be encountered, these materials will be compartmentalized within a temporary diked area on the upper dry sand beach, allowed to dewater and then mixed mechanically by dozers before final grading. The removal of these deposits from the lagoons and canals will ultimately allow better water circulation and flushing as well as restore original navigation safety. The environmental impacts resulting from the disposal of the dredged material on the beach should be similar to or less than those of authorized past nourishment projects on Figure Eight Island or Wrightsville Beach. The deposition of material on the beach will occur between November 15th and March 31s' in order to avoid impacts to turtle nesting and migration. No hopper dredges that have the capability to entrain turtles will be utilized during the project. As with similar former projects here, there is no reason to believe the sediments to be excavated and deposited on the beach have been exposed to any environmental contamination event. In order to minimize the amount of turbidity and suspended sediments in the surf zone, a diversion berm formed parallel to the shoreline and generally centered on the 0.0 MSL contour will prevent the sand and water mixture pumped to the beach from flowing directly into the surf. The 200'+ berm, maintained in advance of the discharge pipe, will allow the maximum amount of particulate settling before allowing the water to return to the ocean. Following mechanical shaping of the upper dry sand beach in the disposal area and after the actions of several tidal cycles, the resulting beach profile is anticipated to slope at 15 to 20:1 above MHW and 20 to 30:1 below MHW out to just beyond the MLLW contour. The beach will be monitored the April following the project to remove any escarpment that may present an impediment to? nesting. vo PQ??6 of M?N? MN PNPG? 5272 - 4.22.04 2 GO I Coastal Wetlands/PNA's/SAV's No areas of vegetated coastal wetlands are to be directly excavated by the proposed project. The planned channel dredging will occur far enough offshore of natural marsh areas so as to allow for an equilibrated side slope of 3:1 (sloughing and run-out areas) to form without threatening these mature stands of vegetation. Within the larger man-made lagoon, maintenance excavation will take place near the outer edge of three volunteer marsh fringes with the potential for indirect sloughing effects. The channel excavation work will not be performed within any Primary Nursery Area (PNA) as designated by the NC Division of Marine Fisheries. No areas of submerged aquatic vegetation (SAV's) are known to exist south of Pender County. The dredge pipeline will be oriented to cross the shoreline in areas that do not have a coastal wetland fringe or 404 wetlands. Essential Fish Habitat (EFH) Essential Fish Habitat (EFH) provisions of the Magnuson-Stevens Fishery Conservation and Management Act help to maintain marine fishery habitat quality and quantity through National Marine Fisheries Service (NMFS) and regional fishery management council consultation on proposed projects that may affect fishery managed species either directly or indirectly. The proposed area of maintenance dredging and associated beachfront disposal is located in an area identified as EFH for postlarval, juvenile, and adult red drum (Sciaenops ocellatus), bluefish (Pomatomus saltatrix), summer flounder (Paralichthys dentatus), cobia (Rachycentron canadum), brown shrimp (Penaeus aziecus), pink shrimp (Farfantepeneaus duorarum), and white shrimp (Farfantepeneaus setiferus). Juvenile and adult gag grouper (Nycteroperca microlepsis), gray snapper (Lutjanus griseus), king mackerel (Scomberomorus cavalla), spanish mackerel (Scomberomorus maculattts) may also utilize EFH of the area. Table 1 provides a list of all EFH species (including life history stage) present in Middle Sound and Mason Inlet. Other estuarine-dependent species including spot (Leiostomus xanthurus), Atlantic menhaden (Brevoortia tyrannus), and striped mullet (Mugil cephalus) that serve as prey for fisheries managed species (e.g. snappers, groupers, tuna, and sharks) inhabit the Middle Sound complex. Categories of EFH within and adjacent to the project area include estuarine emergent wetlands, intertidal/subtidal bottom habitats, oyster/shellfish beds, and estuarine/marine water column. The Fishery Management Plan Amendments of the South Atlantic Fishery Management Council (FMC) have targeted specific categories of EFH and Habitat of Particular Concern (HAPC) as depicted in Table 2. Table 3 provides an impact summary for all designated categories of E? and HAPC. While all twenty-six (26) habitat categories occur in waters of the s a?? United States, only those existing within or adjacent to the project area a ?n is evaluation. ,? 6 Zpp? Impacts on Estuarine Emergent Wetlands o' F MEN h O As discussed above, there will be no direct impacts to emergent wetlan m At disposal activities. The dredge corridor within Banks Channel and co tingfe be located sufficiently waterward of the existing marsh complex to allow forated side- 5272 - 4.22.04 3 1 slope of 3:1 without any disturbance to marsh vegetation. The potential exists for indirect impacts (from side slope equilibration) only to volunteer marsh fringe within the larger man- made lagoon. Impacts on Intertidal Flats (including sand and mud bottom habitats) Intertidal flats and subtidal bottom will be directly impacted by the removal of sediment accumulating within Banks Channel and connecting waters. Nearly the entire length of the proposed dredge corridor, however, has been dredged under previous CAMA permit authorizations. The only area not previously permitted for dredging is the 450-ft extension located near the Intracoastal Waterway (as discussed above). The entire project area represents an area traditionally used for recreational boating and navigation. Based upon recent detailed hydrographic surveys of the area, much of the proposed dredge corridor is located over subtidal bottom habitat. Of the approximately 57.1 ac to be dredged, 1.3 ac consists of intertidal sand flats. Side slope equilibration may equal another .1 ac (1.4 ac total). The excavation of these intertidal areas will result in the conversion of intertidal sand flat to subtidal bottom (average design depth of - 9 ft MLW). Fish species (particularly summer flounder) utilizing this type of habitat as resting areas during migration to and from back-barrier marsh complexes will be displaced to adjacent intertidal sand flats. Typically, larval and post- larval summer flounder drift and migrate inshore during the late winter, while sub-adults migrate offshore during the late summer and fall. Though temporary disturbance/displacement may occur, this area of intertidal flats is relatively small in proportion to the expanse of unvegetated intertidal habitat located adjacent to the project area. Benthic prey items of fish populations utilizing sandy intertidal areas will be subject to abrupt impact from dredging and beach disposal activities. However, studies have indicated relatively quick regeneration of benthic populations along the beachfront. Reilly and Bellis (1978) reported that population regeneration occurs within 1 to 2 seasons once pumping operation ceases. Essink et al. (1998) reported that species densities, biomass, and diversity of the zoobenthic community of beachfront habitats returned to pre-project values within one to two years. Other studies (National Research Council, 1995; Hackney et al., 1996; Ross and Lancaster, 1996) suggest that benthic species recovery in intertidal areas of both the beachfront and back-barrier island flats will occur rather quickly provided certain mitigative measures (i.e. avoiding peak recruitment periods) are employed. i Project activities will result in direct disturbance to estuarine, subtidal and intertidal habitat. These habitat types are continually subject to natural dynamic forces (e.g. waves, wind, and storm events) that drive depositional processes. As a result, species utilizing this habitat are 1 continually adapting to changes in substrate elevation and surface area. In addition, the dredge corridor represents an area historically maintained and dredged. Processes contributing to the formation of intertidal habitat outside the project area will not be affected. The expanse of 1 intertidal flats beyond the project area will continue to be utilized by the listed fish species. Therefore, the cumulative effect of maintenance dredging and nourishment to intertidal fl is not considered to be significant. ?J ?co 1 ?J 6 Of 0 5272 - 4.22.04 V\'J \ .'w i J0P's N- r Oyster Reefs and Shellfish Beds Intertidal oyster reefs and subtidal oyster beds provide important ecosystem functions including structural complexity for refuge, water column filtering, and feed habitat for resident and transient species (Coen et al. 1999). Marine invertebrate species such as polychaetes, crabs, and amphipods that reside within oyster reef communities serve as important prey items for red drum, summer flounder, striped bass, and other finfish species (Noble 1999). As such, oyster reefs have been designated as EFH by the South Atlantic Fishery Management Council. No oyster reefs are located within the project area. Scattered oyster beds are located along interior creeks of Middle Sound with some occurring near marsh edges of open water. However, the area of the proposed dredge corridor will be located a sufficient distance from marsh edges as to avoid disturbance to any potential oyster beds. In addition, the applicant has coordinated with the NC Division of Marine Fisheries (DMF) to identify the presence of potential shellfish resources in the project area. Available shellfish survey data from DMF indicate that no oyster or clam resources were present from sampling within the mapped habitat type to be impacted by the project. Therefore, it is unlikely that the proposed activities will impact this category of EFH. Impacts on the Marine and Estuarine Water Column ' Mortality of organisms lacking the ability to escape the suction field of an operating dredge and subsequent entrainment in the flow of water and sediment passing through its pumping equipment is likely. However, previous USACE studies have demonstrated that only an extremely small percentage (a fraction of I %) of marine and estuarine larvae are subject to entrainment based upon the amount of water that a dredge can pump. Dredge entrainment impacts to bottom-dwelling fish, crabs and free-swimming larval organisms is anticipated to ' approximate those of other authorized navigation projects. No significant impact on these life forms is expected at local or regional population levels. During beach deposition, immediate localized impact from abrupt increases in sedimentation along the surf zone may negatively affect fish present at the time of the proposed work. However, siltation and turbidity within the surf zone will be minimized through the use of a 1 diversion berm (see description above). Placement of sediment consisting predominantly of medium to fine grain size sands will minimize turbidity and/or other water quality impacts. According to USACE (1997), sediment consisting of more than 90% sand is not likely to produce significant turbidity. These design elements will minimize water quality impacts and subsequent disturbance to estuarine-dependent and surf zone fishes. Effects of any elevated turbidity will be limited both temporally and spatially. Turbidity levels tend to decrease ra? L subsequent to dredging or excavation through simple mixing and dilution cess s i with tidal currents and wind). Indeed, storm events can produce e 1 is of suspended sediments. The spatial scale of elevated turbidity related Jje' is ofte n ir? (USACE 2001). 1? 1U`+ N pF No quantitative assessments have been conducted to evaluate beach nent ,?pAEA zone fishes in this area. It is understood that federal agencies are currentl ng an integrated monitoring plan to gather data with which to identify more&IM?ately potential 5272 - 4.22.04 5 impacts to fishes utilizing the immediate shoreline area. NMFS has commented that restricted lateral movement of early life stage fishes may make these individuals more susceptible to nourishment impacts. More mobile sub-adult and adults that prey upon benthic macrofauna of ' the surf zone (e.g. mole crabs and coquina clams) would likely move to adjacent undisturbed beach areas and other suitable feeding areas for the temporary period of benthic population re- establishment. It should be noted that the beach disposal area to be used is located entirely ' within the footprint previously permitted for the Mason Inlet Relocation Project. ' Impact Summary for Essential Fish Habitat Of the twenty-six (26) categories of identified EFH within southeastern United States, four categories (estuarine emergent wetlands, estuarine water column, marine water column, and intertidal/subtidal bottom) occur within or adjacent to the project area (refer to Table 3). Negative impacts associated with dredging and nourishment activities will be relatively short- term and confined predominantly to the three- to four-month project window. The project site has been historically dredged and maintained for recreational boat use. There will be no disturbance to natural areas of coastal wetlands. The cumulative impact to fish habitat resulting from the proposed activities is considered to be minor and short-lived. Therefore, negative impacts to EFH associated with dredging of Banks Channel and connecting waters and the disposal of material on the beachfront of Figure Eight Island have been determined to be not significant. fl 5212 - 4.22.04 (?• ?? lam} \y? ApR262?4 PN AG?MEN? GDAS-Tp,L M 6 Table 1. Presence of Managed Species (including life cycle stage) for Area Water Bodies.' E - Eggs L - Larval J - Juvenile A - Adult N/A - Not Found Mason Inlet Middle Sound Rich Inlet AIWW (throughout NC) Atlantic Ocean South of Cape Hatteras Red drum ELJA ELJA ELJA ELJA A Bluefish ELJA ELTA ELJA ELJA JA Summer flounder LTA LTA LJA LJA ELJA Gag grouper JA J JA J ELJA Gray snapper JA J JA J ELJA Dolphin N/A N/A N/A N/A ELJA Cobia ELTA `ELJA ELJA ELJA JA King mackerel JA JA JA JA ELJA Spanish mackerel JA JA JA LJA ELJA Black sea bass LTA LJA. LJA LJA ELJA Spiny dogfish JA JA JA JA ELJA Brown shrimp ELJA - ELJA ELJA ELJA ELJA Pink shrimp ELJA ELJA ELJA ELJA ELJA White shrimp ELJA ` ELJA ELJA ELJA ELJA Atlantic bigeye tuna N/A N/A N/A N/A N/A Atlantic bluefin tuna N/A ` N/A,, N/A N/A N/A Skipjack tuna N/A N/A N/A N/A N/A Longbill spearfish N/A N/A N/A N/A N/A Shortfin mako shark N/A . N/A N/A N/A N/A Blue shark N/A N/A N/A N/A N/ 'Table contents from National Marine Fisheries Service (Beaufort, NC) ? N ?? 5272 - 4.22.04 ppR 2 61?y ON OFPGEwE \ M D P COPS-?p,1. M 1 Table 1 (continued). Presence of Managed Species (including life cycle stage) for Area Water Bodies. J E - Eggs Mason Inlet Middle Rich Inlet AIWW Atlantic L - Larval Sound (throughout Ocean South J - Juvenile NC) of Cape A - Adult Hatteras N/A - Not Found Spinner shark N/A N/A N/A N/A ELJA Sword fish N/A N/A N/A N/A ELJA Yellowfin tuna N/A N/A N/A N/A ELJA Blue marlin N/A N/A N/A N/A ELJA White marlin N/A N/A N/A N/A ELJA Sail fish N/A N/A N/A N/A ELJA Calico scallop N/A N/A N/A N/A ELJA Scalloped A - N/A A N/A JA hammerhead shark Big nose shark A N/A A N/A JA Black tip shark A N/A A N/A JA Dusky shark A N/A A N/A JA Night shark A N/A A N/A JA Sandbar shark A N/A A N/A JA Silky shark A N/A A N/A JA Tiger shark A N/A A N/A JA Atlantic sharpnose A N/A A N/A JA shark Longfin mako A 'N/A A N/A JA shark Whitetip shark A N/A A N/A JA Thrasher shark A -N/A A N/A JA 5272 - 4.22.04 SCVN-?& ApR 16 DO ?sog o EMeOT c°PS?P? N?A P,6 Table 1 (continued). Presence of Managed Species (including life cycle stage) for Area Water Bodies. u ?I t E - Eggs L - Larval J - Juvenile A - Adult N/A - Not Found Mason Inlet Middle Sound Rich Inlet AIWW (throughout NC) Atlantic Ocean South of Cape Hatteras Gray triggerfish N/A N/A N/A N/A ELJA Yellow jack N/A N/A N/A N/A ELJA Blue runner N/A N/A N/A N/A ELJA Crevalle jack N/A N/A N/A N/A ELJA Bar jack N/A N/A N/A N/A ELJA Greater amberjack N/A N/A ; N/A N/A ELJA Almaco jack N/A N/A N/A N/A ELJA Banded rudderfish N/A N/A N/A N/A ELJA Spade fish N/A N/A N/A N/A ELJA White grunt N/A N/A N/A N/A ELJA Hogfish N/A N/A' N/A N/A ELJA Puddingwife N/A N/A N/A N/A ELJA Blackfin snapper N/A N/A N/A N/A ELJA Red snapper N/A N/A N/A N/A ELJA Cubera snapper N/A N/A N/A N/A ELJA Silk snapper N/A N/A N/A N/A ELJA Vermillion snapper N/A N/A' N/A N/A ELJA Blueline tilefish N/A N/A N/A N/A ELJA Sand tilefish N/A N/A N/A N/A ELJA Bank sea bass N/A N/A N/A N/A ELJA 5272 - 4.22.04 3 D 2004 APR26 SMeNT 9 Go PS- P M ,. Table 1 (continued). Presence of Managed Species (including life cycle stage) for Area Water Bodies. t 1 E - Eggs L - Larval J - Juvenile A - Adult N/A - Not Found Mason Inlet Middle Sound Rich Inlet AFVVW (thoughout NC) Atlantic Ocean South of Cape Hatteras Rock sea bass N/A N/A N/A N/A ELJA Graysby N/A N/A N/A N/A ELJA Speckled hind N/A N/A N/A N/A ELJA Yellowedge grouper N/A N/A N/A N/A ELJA Coney N/A N/A N/A N/A ELJA Red hind N/A N/A N/A N/A ELJA Jewfish N/A N/A N/A N/A ELJA Red grouper N/A N/A N/A N/A ELJA Misty grouper N/A N/A N/A N/A ELJA Warsaw grouper N/A N/A N/A N/A ELJA Snowy grouper N/A N/A N/A N/A ELJA Yellowmouth grouper N/A N/A N/A N/A ELJA Scamp N/A N/A - N/A N/A ELJA Sheepshead JA JA JA N/A ELJA Red porgy N/A N/A, N/A N/A ELJA Longspine porgy N/A N/A ` N/A N/A ELJA Scup N/A N/A N/A N/A ELJA Little tunny N/A N/A N/A N/A ELJA 5272 - 4.22.04 SCSI', APRI%7 04 ?Se4tA GEMEN? GpPS-?p,L M la Table 2. Categories of Essential Fish Habitat and Habitat Areas of Particular Concern in Southeast States. 1,2 Essential Fish Habitat Geographically Defined Habitat Areas of Particular Concern Estuarine Areas Area-wide Aquatic Beds Council-designated Artificial Reef Special Management Zones Estuarine Emergent Wetlands Hermat is (reef-forming) Coral Habitat and Reefs Estuarine Scrub/Shrub Mangroves Hard Bottoms Estuarine Water Column Ho Hills Intertidal Flats Sar assum Habitat Oyster Reefs and Shell Banks State-designated Areas of Importance of Managed Species Palustrine Emergent and Forested Wetlands Submerged Aquatic Vegetation Sea grass Marine Areas North Carolina Artificial/Manmade Reefs Big Rock Coral and Coral Reefs Bo ue Sound Live/Hard Bottoms Capes Fear, Lookout, and Hatteras sand shoals Sar assum New River Water Column The Ten Fathom Ledge The Point 'As identified in the Fishery Management Plan Amendments of the South Atlantic Fishery Management Council and included in Essential Fish Habitat: New Marine Fish Habitat Mandate for Federal Agencies (February 1999) zAdapted from USACE Environmental Assessment - Preconstruction Modifications of Authorized Improvements, Wilmington Harbor, North Carolina (February 2000) 1 5272 - 4.22.04 APR 2 g 20th p,v Asti P A EMENT COASTPAU M 11 I Table 3. Summary of Potential Impacts to Essential Fish Habitat and Habitat Areas of Particular Concern"2 L ESSENTIAL FISH HABITAT Present in or adjacent to Project Area Potential Impacts Dredge Operations Potential Impacts Beach Disposal Estuarine Areas Aquatic Beds No N/A N/A Estuarine Emergent Wetlands Yes No No Estuarine Scrub/Shrub Mangroves No N/A N/A Estuarine Water Column Yes Minor/Temporary No Intertidal Flats Yes Minor No Oyster Reefs and Shell Banks No N/A N/A Palustrine Emergent and Forested Wetlands No N/A N/A Sea grass No N/A N/A Marine Areas Artificial/Manmade Reefs No N/A N/A Coral and Coral Reefs No No No Live/Hard Bottoms No N/A N/A Sar assum No N/A N/A Water Column Yes Minor/Temporary Minor/Temporary HABITAT OF AREAS OF PARTICULAR CONCERN Area-wide Council-designated Artificial Reef Special Management Zones No N/A N/A Hermatypic (reef-forming) Coral Habitat and Reefs No N/A N/A Hard Bottoms No N/A N/A Hot Hills No N/A N/A Sar assum Habitat No N/A N/A State-designated Areas of Importance of Managed Species No N/A N/A Submerged Aquatic Vegetation No N/A N/A North Carolina No No No Big Rock No N/A N/A Bo ue Sound No N/A N/A Capes Fear, Lookout, and Hatteras sand shoals No N/A N/A New River No N/A N/A The Ten Fathom Ledge No N/A N/A The Point No No No BAs identified in the Fishery Management Plan Amendments of the South Atlantic Fishery Management Council g in cluded in Essential Fish Habitat: New Marine Fish Habitat Mandate for Federal Agencies (Februa 'Adapted from USACE Environmental Assessment - Preconstruction Modifications of Authori r ti Wilmington Harbor, North Carolina (February 2000) ?A' 2004 5272 - 4.22.04 I G?PgSF? M REFERENCES Coen, L. et al. 1999. Perspectives. In L. Benaka (ed.), Fish Habitat: Essential Fish Habitat and Rehabilitation. American Fisheries Society Symposium 22, Bethesda, MD. http://www.fisheries.orQ ' Hackney, C.T., M. Posey, S. Ross, and A. Norris. 1996. A Review and Synthesis of Data on Surf Zone Fishes and Invertebrates in the South Atlantic Bight and the Potential Impacts from Beach Renourishment. For Wilmington District, US ' Army Corps of Engineers, Wilmington, North Carolina. Mallin, M.A., M.H. Posey, T.E. Lankford, M.R. McIver, S.H. Ensign, T.D. Alphin, M.S. Williams, M.L. Moser, and J.F. Merrit. 2001. Environmental Assessment of the Lower Cape Fear River System, 2000-2001. CMS Report Number 01-01. Center for Marine Science. University of North Carolina at Wilmington. ' National Marine Fisheries Service, Habitat Conservation Division, Beaufort Office, Personal Communications. ' Nixon, S.W. 1980. Between coastal marshes and coastal waters: a review of twenty years of speculation and research on the role of salt marshes in estuarine productivity and water chemistry. In P. Halmington and K.B. MacDonald (eds.), Estuarine and Wetland Processes. New York: Plenum, pp Noble, Liz. Oyster Reefs Provide Critical Habitat for Marine Ecosystem. URL - NC Division of Marine Fisheries. t 1 Odum, E.P. and A.A. de la Cruz. 1967. Particulate organic detritus in a Georgia salt marsh-estuarine ecosystem. In G.H. Lauff (ed.), Estuaries, Publ. No. 83. Washington, DC: Am. Assoc. Adv. Sci., pp. 383-388. Posey, M.H., C.M. Powell, and T.D. Alphin. 1996. Invertebrate indicators of renourishment effects on the beach community. In C.T. Hackney, M.H. Posey, S.W. Ross, and A.R. Norris (eds.), A Review and Synthesis of Data on Surf Zone Fishes and Invertebrates in the South Atlantic Bight and the Potential Impacts from Beach Renourishment. Prepared for Wilmington District, U.S. Corps of Engineers, Wilmington, North Carolina, pp. 10-40. Reilly, F. J., Jr. and Bellis, V. J. 1978. A Study of the Ecological Impact of Beach Nourishment with Dredged Materials on the Intertidal Zone. Sinclair, M. 1988. Marine Populations: as essay on population regulation and specification. Washington Sea Grant. University of Washington Press, Seattle. U.S. Army Corps of Engineers (USACE). 1997. Environmental Assessment for Beach Erosion 5272 - 4.22.04 Draft Reevaluation Co ntrol aud c gr?JS APR 16 2pp4 ON `S`Ol PG_M coPS?AL N1P i ' Protection. Brunswick County Beaches, North Carolina. Ocean Isle Beach Portion. Wilmington District, South Atlantic Division. Weinstein, M.P. 1979. Shallow marsh habitats as primary nurseries for fishes and shellfish, Cape Fear River, North Carolina. Fisheries Bulletin. 77:339-357. S v O ,?62pp4 APR OF N? O\v \S?pN P6E?E PS?PL M GO 5272 - 4.22.04 14 k Q PQR? of ??N \ J`S? P PG?c s PLM GpP M V V co Q) Z 0 X Z O. 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W -00 -60 -40 -20 0 20 40 60 BO 0 4+00 0 0 -4 y -4 -8 -80 -60 -40 -20 0 20 40 60 0 -c -g 2+00 -80 -60 -40 -20 0 20 40 60 80 0 0 y y -0 J 0 -4 0 -0 -4 44+00 0 20+00 0 0 y -4 6 6 6 lillill Hill y -4 -4 y -0 0 C:d N '' wZO v_B U G>~ a " w C VW) y cn W a. 2 po Q j w (N -0 ? , o C? ? m ?U M ? v U w -,2 U Z -80 -00 -40 -20 0 20 40 60 80 -80 -60 -40 -20 0 20 40 60 80 -80 -60 -40 -20 0 20 40 60 80 -80 -60 -40 -20 0 20 40 60 80 -80 -00 -40 -20 0 20 40 60 80 -80 -60 -40 -20 0 20 40 60 80 Ak Z Q j s, w 8+00 16+00 24+00 32+00 40+00 48+00 Z Q U+UU o o ? 0 0 0 0 0 0 0 0 0 0 0 0 SfAI ' `,,,uunnn, , -4 -4 o t? C4Rp? , I L y y y y y -4 -4 -4 -4 y y y F6SSj0??y 2EE& r = V1= INE• 12 -+z -80 -60 -40 -20 0 20 40 60 80 -00 -60 -40 -20 0 20 40 60 80 -80 -60 -40 -ZO 0 20 40 60 80 -80 -60 -40 -20 0 20 40 60 80 -80 -60 -40 -20 0 20 40 60 80 -50 -60 -40 -20 0 20 40 60 80 -60 -60 -40 40 60 , S D I 10h O ? nmr HORIZONTAL SCALE: I" = 100' VERTICAL SCALE: I' = 10' Q P? GOP5 to+uu Z6+00 54+00 4Z+00 ° 60+00 0 0 HIM d -4 -8 -0 -12 11 11 1 -1 -12 -8o -60 -40 -20 0 20 40 60 80 58+00 0 ? 0 4 I -4 -0 -0 t -I2 ( 7m -12 -00 -60 -40 -20 0 20 40 60 80 56+00 0 0 -4 4 -0 I -0 -12 •12 -00 -60 -40 -20 0 20 40 60 80 54+00 0 -0 68+00 I I -80 -60 -40 -20 0 20 40 60 66+00 ? III I 1 i Ii !??II j ?I I I 1 -0 I 1 ( -0 -80 -60 -40 -20 0 20 40 60 80 64+00 Ii I 4 I 4 IE?I I -8 I -0 -80 -60 -40 -10 0 20 40 60 80 0 0 -4 -4 -0 -0 76+00 4 4 -0 -0 I ? -00 -60 -0 -20 0 20 40 60 80 -4 74+00 -0 86+00 L -4 -0 -0 -80 60 •40 -20 0 20 40 60 80 84+00 -4 -4 I I 1 ? -L -0 -0 II ?I-0 II I' -80 -00 -40 -20 0 20 40 60 80 -11 -12 -80 -60 -40 -20 0 20 40 60 80 72+00 0 0 -4 -4 82+00 -4 4 -8 i I -0 -80 -60 -40 -20 0 20 40 60 80 96+00 -4 4 -0 -0 ++H I -80 -60 -40 -20 0 20 40 60 80 94+00 4 -4 -0 -0 -00 -60 -LO -20 0 20 40 60 AO 92+00 -4 y -0 -0 -80 -60 -40 -20 0 20 40 60 80 106+00 -4 f 4 7e -0 I 8 -80 -60 -40 -20 0 20 40 60 80 104+00 4 -4 I I -0 ? I it -0 I -80 -60 -40 -20 0 20 40 60 80 114+00 i -4 1 I 1 -4 I I1?( I i?1 -0'111 jirl -0 I -80 -60 -40 -20 0 20 40 60 80 102+00 y 4 -8 -0 •80 -60 -40 -20 0 20 40 60 80 112+00 -4 ' -L -0 I -0 -80 -60 -40 -20 0 20 40 60 80 -0 -0 90+00 I10+00 80+00 100+00 •12 -12 -4 - -4 -4 -4 -4 •4 1 I ( -4 -00 -60 -40 •20 0 20 40 60 80 t4 -0 -0 I M, . fl. . -0 -8 -0 -0 -0 -0 70+00 -80 -60 -40 -20 0 20 40 60 80 -80 -60 -40 -20 0 20 40 60 80 -80 -60 -40 -20 0 20 40 60 80 -80 -60 -40 -20 0 20 40 60 80 0 0 0 -4 -0 -12 -12 -12 -12 •12 ' -12 -80 -60 -40 -20 0 20 40 60 80 -80 -60 -40 -20 0 20 40 60 80 -00 -60 SO •20 0 20 40 60 AO 78+00 88+00 98+00 -2. -4 -4 -L -4 -4 -4 -0 -0 -8 -0 -0 -0 -0 -80 -60 -40 -20 0 20 40 60 80 -80 -60 -40 -20 0 20 40 60 80 -80 -60 -40 -20 0 20 40 60 80 , HORIZONTAL SCALE: I' = 100' VERTICAL SCALE: I' = 10` n 0 0 0 z N d O D U O x N N O U1 d 0 m ? < W O w m 2 c°2 s z z z 3 4j z w w V o n o v? s o m z w z O O ?> U W D: m d 0 > oI 21 m Cn c E o " N o Z N moo L- ?L- `? o? z No W CA co i a I Z 4 1i L, Z V) n U _ ? z ? °z im - Cn Y w W z C? Q > L : Q V) L C) a) W0) (~ I - v N ^ a I LIJ co LIJ V) W ?zpr ULa U? U) Cl cr LLJ (n V) c c) r73.. V U LIJ U Z AL w Z Q c SEAL ``iil rrniuhrpii CARq o SEAL C-) U) _ s 2581 TN -4 62+00 -4 -4 -8 -0 108+00 U- 124+00 134+00 144+00 150+00 160+00 O U O Z _ C4 W) f U 0 0 0 ? N \ d ' I I I 1j11 i I 0 > Q .. O I ' 0 0 0 Il 0 W m U ? Z O il ) ( II 1 11 11 K I i II Z Z Z l I I y A 4 y U W rj r I ' -j = V 4 -4 -4 Z -4 4 o o v) o u 1 - -0 -0 L i -0 - F -0 Z : h l l I 1 w -0 -g -8 -0 -0 I -0 N O O -12 -12 -I2 -I2 0 S U -80 -60 -40 -20 0 20 40 60 80 100 -100 -80 -60 -40 -20 0 20 40 60 80 100 -100 -80 -60 -40 -20 0 20 40 60 80 100 400 -00 -60 ZO -20 0 20 40 60 80 100 0_ 2 -12 W i -100 -80 -00 -40 -20 0 20 40 60 80 100 F- 122+00 -4 -80 -00 -40 -20 0 20 40 60 80 100 120+00 -4 -4 -0 -0 -12 -12 -80 -60 -40 -20 0 20 40 60 80 118+00 -4 -4 -0 -0 2 -12 -80 -60 -40 -20 0 20 40 60 60 116+00 0 0 11 1% 1111111 -4 y -LLI I 1z I i -Iz -80 -00 -40 -20 0 20 40 60 80 -40 -20 0 20 40 60 80 100 142+00 -4 L 130+00 0 0 I'iIT -4 -4 ?l LU I -0 -0 I -100 -80 -00 -40 -20 0 20 40 60 80 100 128+00 y -4 -00 -00 -40 -20 0 20 40 60 80 100 126+00 0 -4 -0 -12 0 -4 -0 -12 -100 -80 -60 -40 -20 0 20 4o 60 80 100 140+00 -4 0 0 -4 y -100 -80 -60 -40 -20 0 20 40 60 80 100 138+00 -4 -60 -40 -20 0 20 40 60 80 100 -4 -100 -00 -60 -40 -20 0 20 40 60 80 loo HORIZONTAL SCALE: I' = 100' VERTICAL SCALE: I' = 10' 148+00 0 0 -4 4 6 -0 2 -12 -80 -60 -40 -20 0 20 40 60 80 100 146+00 0 I 0 4 I I -0 2 2 -100 -80 -60 -40 -20 0 20 40 60 80 100 158+00 o s M t o. -0 -6 O o CJ o0 co m J _ _ (y , W 1O m 'N ? E NN -12 2 > ? 15?? . . v o Fu 13 m H $Q ? -100 -80 -00 -40 -20 0 20 40 60 80 100 1 U-9 N ? 0 >_ 156+00 z °°° W co i ? J z z -0 az a y i ?i (n 0`7 E-4 f h-I Q z (n B m o W Y z 0, ?* Q V) z rx N 1 F it w -100 -80 -60 -40 -20 0 20 40 60 80 100 ?Z) U I r w (n cn Coa P- r?i M C-D IrV) cl, 1" Z i O Q' 154+00 U ° - U -4 -4 U LLJ Q 'All z 1.L! Z 2 2 < -100 -00 -60 -40 -20 0 20 40 60 80 loo Nr I WX `1?p 111111?1? / 152+00 :;0i4 -4 -4 :a SEAL n : 2661 -•-.LINE O EDw?? \QIII?? ? 111 -loo -00 -60 -40 -20 0 ?0 I 14 ,?\' ti R1?°Z Q F P J15\0 0 EM?? 0? MP 132+00 V 4 -4 -x a 176+00 192+00 0 -4 -0 -12 168+00 0 0 -4 -4 -8 a -1l 184+00 o 0 -4 -4 a _u -100 -80 -60 -40 -20 0 20 40 60 80 100 -100 -80 -60 -40 -20 0 20 40 60 80 100 -100 -80 -60 .40 -20 0 20 40 60 80 100 -4+I I 111 1 l I l i I l F[7-" -100 -80 -60 -40 -20 0 20 40 60 80 100 -12 0 -4 -L $ -a - 0 0 -4 -4 -8 0 0 0 -4 -4 L 200+00 -0 -0 0 0 -4 -z -100 -80 -60 -40 -20 0 20 40 60 80 100 -100 -80 -60 -40 -20 0 20 40 60 80 100 0 -4 _8 -12 0 166+00 11 I I 1 I I I I I I I I I I I I I 174+00 182+00 190+00 -100 -80 -60 -40 -20 0 20 40 60 80 100 0 -too -80 -60 -40 -20 0 20 40 60 80 100 -100 -80 -60 -40 -20 0 20 40 60 80 100 6 164+00 -4 -4 y -0 -8 -0 0 -4 a 0 170+00 162+00 -100 -80 -60 -40 -20 0 20 40 60 80 too 180+00 -100 -80 -60 -40 -20 0 20 40 60 80 100 --100 -00 -00 -40 -20 0 20 40 60 80 too 12 0 i -0 a 0 _y -L -0 -e 0 -4 0 -0 -4 188+00 -100 -80 -60 -40 -20 0 20 40 60 80 100 -0 0 0 y i -0 a -1z -12 178+00 198+00 0 -L y -4 -8 a -0 -12 2 0 -4 -0 -12 196+00 W U U U W U Z ? 2 N h O ? I J N \ a m a w ° °w co o m o z v- o o 3 J Z t w U 0 a o N 0 i w 0 N U > W W 1? U) 0 , ?s mc?? UU Z o v ? mao Euu N N ? F u z Noy w ? Q'i ^ N C 00 Z ?T4 La N Q F Z - M Z ° p (n Y W ? U' Q? mo o i N w 0) V) E-4 I wCO cn fix] i (7 La ? z =o LLJ? 0 c, 0 ? 00 V M 3., U LEI U Q Z LL, Z Q sm ownu, a 04 1 o ESS? o ;'. :Q7 -4 -0 -12 -100 -80 -60 -40 -20 0 20 40 60 80 100 -100 -80 -60 -40 -20 0 z0 40 60 80 100 0 186+00 0 s -0 -0 1z 0 -4 -4 -0 -0 -12 -100 -80 -60 -40 -20 0 20 40 60 so 100 -100 -00 -60 -40 -20 0 20 40 60 80 100 -100 -80 -60 -40 -20 0 20 40 60 80 100 -100 -00 -60 -40 -20 0 20 40 60 80 100 -1 HORIZONTAL SCALE: I' = 100' VERTICAL SCALE: I' = 10' a 2681 r. N VIP`s`oy 1 GG A5 194+00 0 -4 206+00 6 -4 -0 -12 0 -4 -0 -12 -100 -00 -60 -40 -20 0 20 40 60 80 100 -400 -80 -60 -40 -20 0 20 40 60 80 100 0 202+00 -4 -0 -1z -1z z -16 -;K -16 -100 -60 -60 -40 -20 0 20 40 60 80 100 -16 16 -100 -80 -60 -40 -10 0 20 40 60 BO 100 208+00 212+00 0 0 4 .4 -12 -12 0 y -I2 -100 -80 -60 -40 -20 0 20 40 60 80 0 210+00 0 0 0 -4 -4 4 -0 -0 -0 -12 -12 -12 -100 -80 -60 -40 -20 0 20 40 60 80 10 204+00 O U O Z N d U LU p r- CD U U 2 .1 m ? 220+00 m 0 'n W o W in z 13,30 00 Z cV 0 -4 -0 ; ? r z w z w til 0 W??3W2U 0 -4 -4 -100 -80 fi0 -40 -20 0 20 40 60 O O O N O VI 0 i L'i N f z s -4 O O N U _ K W= N c -100 -80 -00 -40 -20 0 20 40 60 BO ?o- os \ moo N 218+00 m 19d? N ?vW 991, 00 10 g `? E 0 -4 + a N m C IA cn y m p 6 6 2 O(/ -4 -4 -8 -0 0 N C Q 7 P m L li C N V) W 07 Una Z Nor W B O fZ?roN d Z ? I /-I W 7CJ 6r6 Q -100 -80 -60 -40 -20 0 20 40 60 400 -BO -60 -40 -20 0 20 40 60 E'1 z U I--I C5 Z o (? °z Y P4 W ?av Z 216+00 224+00 z Q C7.sz, mon 0 -0 a 1 -0 1 -4 -8 -0 ;d z o C W2rn H p: 1 - U 6v Ix a W Cc W (n r -4 0, z z W ? .. 13, o 1r \7 r? 3 U -0 W U 0 0 -100 -80 -60 -40 -20 0 20 40 60 -100 -80 -60 -40 -20 0 20 40 60 80 Z Q Z W 214+00 222+00 0 0 -4 -4 -0 -0 \I L 0 230+00 sm - Ilpuuiihq -4 -4 \a SEAL r. r ? 2681 _ 11 fi ?; ?y[p?p ? OINK, ? -100 -80 -60 -40 -20 0 20 40 60 80 -400 -00 -60 -40 -20 0 20 40 60 -100 -80 -60 -40 -20 0 20 40 60 JiC? 0\'ji? ,, ED ? ` i?ln• Jy 1 /a 1, ?/? II II 1 HORIZONTAL SCALE: I' = 100' VERTICAL SCALE: I' = 101 GoPS?P? ARI VARIES VARIES 100' W 0 W O 10 " 10 DREDGE DI SCHARGE PIPE m IZ L- +9.5 PLACED LO NGITUDINALLY _ a W m R :2 z Z + .5 +8.5 ALONG TO OF FILL `? ': ; , • . ' ':: _? , : FILL CON NEMENT DIKE MATERIAL RE UIRED , 5 a a o , . ,. :. , FOR BUILD FROM THE ING DIKES SH SEAWARD SID LL E O BE EXCAV F THE PR ATED OPOSED 125' MIN. ' ' ' DIKE LINE & SHALL EXT END 200' MIN MUM ;:: :: ... : AHEAD OF DISCHARGE OIN T EXIST. s o 5 I I ? , 1 1 PIER ? SUGGESTS MAX. SLOP I I o ::: <. ':;:: :•.. ':::!:. ? _.:, :: .::..`: .. 2.05 MHW . . , I EXIST. GRADE VARIES BEACH FlLL SEAWARD TOE OF BER M CD m LOCATE ® APPROX OF DIKE IMATE ELEV. 0 0.00 MSL I ( 0.00 MLW } m d k e " ? ? ?__ 0 APPROXIMATE SEAWARD EDGE -1 54 MLLW s - NN . OF EXIST. BLDG m FOUNDAl10N / N p t0??6 E c°? T U W >= Ll) M f0 ui 0' Lo ao o '? o V INDICATES co -9.0 MLW DREDGE TEMPLATE _ U, N M m J z 0+00 1+00 2+00 3+0 GROUND/ I Z BOTTOM N _ TYPICAL BEACH FILL CROSS-S ECTION ELEVATION INDICATES TYPICAL CHANNEL SECTION M Ei Z N o ? Z • _ HORIZONTAL SCALE: I 50 DIST. FROM BASELINE . = HORIZONTAL SCALE: I 50 z -I o- Q' W z? Y Z F VERTICAL SCAL , E: I = 5 0+00 " VERTICAL SCALE: I = IO [? W C7a=? Q mo W z AN W ? I N VARIE VARIES VARIES 100' 150'± ? F N ' I ? Lj Co 10 +9.5 W U?la0 pjr o ck? - - +8.5 Z w; ? L` .t. ?uco U 15 TO 2 I I w a ] ?: 5 Q Z r I I Z 1 2.05 MHW 20 TO 30 SE& 0 0.00 MSL ca `' APPROXIMATE ?F ss o - SEAWARD EDGE -1.54 MLLW , 7 OF EXIST. BLDG FOUNDATION a seal 2681 : co tO oo u? ao EpW?? ,,. d N q F O 1 O CV M ll??? 6 , 0+00 1+00 2+00 3+00 aQR1 ?o ?E ANTICIPATED CHANGE AFTER SEVERAL TIDE CYCLES HORIZONTAL P' VERTICAL SCALE: I" = 5' Go 1 s? Q PQ? ?0X, GO ca W O W a 0 a W v Oct Z 4. 4. Q FIGURE "8" BEACH HOMEOWNERS ASSOCIATION FIGURE EIGHT ISLAND, NORTH CAROLINA Property Owner Immediately North of Mason Inlet Property Owners South of Inlet George Henry Hutaff Tract No. 2 c/o David Ward P.O.Box 867 New Bern, NC 28563 (252) 633-1000 All property owners on Figure Eight South of the Causeway will be notified By Certified Mail. R?6ti GO PSG P? Note: Figure Eight Island property owners south of the Causeway will be notified by Certified Mail. A list will be provided, if requested. t L DIVISION OF COASTAL MANAGEMENT ADJACENT RIPARIAN PROPERTY OWNER NOTIFICATION/WAIVER FORM Name of Individual Applying For Permit: Address of Property: (Lot or Street n, Street or Road, City & County I hereby certify that I own property adjacent to the above- referenced property. The individual applying for this permit has described to me as shown on.the attached drawing--the--development they are proposing. A description or drawing, with dimensions, should be provided with this letter. I have no objections to this proposal. If you have objections to what is being proposed, please write the Division of Coastal ManaGement, 127 Cardinal Drive Extension, Wilmington, North Carolina, 28405 or call 910 395-3900 within 10 days of receipt of this notice. No response is considered the same as no objection if you have been notified by Certified Mail \s?C?"f?:,n, .. Signature Date ±47jr . ' Print Name N Telephone N umber With Area Code W V Z Q 0 V LA. 0 LU W Q co scjsQa,6TO WMIQ OP??P ??ME? GpP ' "CX i 1 STATEMENT OF COMPLIANCE ' WITH NORTH CAROLINA ENVIRONMENTAL POLICY ACT The Figure "S" Beach Homeowners' Association proposes that this project is exempted from the requirement to prepare an environmental assessment under the North Carolina Environmental Policy Act because the proposed maintenance of an existing navigation channel complies with the general and specific use standards under 15A NCAC 7H and, therefore, qualifies as a "non-major activity" under 15A NCAC 1C.0504 (3) (f) and .0504 (5) 0). V ? 6 2oDy ? ?QR C,O PS '1 CO) W 1 CO) LL u 4 ? R AP of O?v ? M pN Pc??? ? Z PS?PL W co Oct 1 ENGINEERING CONSULTING SERVICES, LTD. Geotechnical • Construction Materials • Environmental Mr. David Kellam Figure Eight Beach Homeowners Association 15 Bridge Road Wilmington, NC 28411 ?J RE: Report of Field and Laboratory Testing Figure Eight Island Wilmington, North Carolina Dear Mr. Kellam: April 5, 2004 ECS, Ltd. Project No. 22.10835 Engineering Consulting Services, Ltd. (ECS) has completed the subsurface exploration and laboratory testing for southern Figure Eight Island and Banks Channel in Wilmington, North Carolina. ECS obtained soil samples from twenty selected locations in the sound side channel and in four selected test locations on the beach. The channel locations were denoted as S-1 through S-20. The beach locations were denoted as B-1 through B-4. The channel soil samples were obtained at the bottom of the channel at the selected locations and at an approximate depth of nine feet below the mean low water level. The beach samples were obtained at the surface at the mid-tide level of the beach. This report presents the results of our laboratory tests. We appreciate the opportunity to provide laboratory services to you on this project. Should you have any questions, please contact us at (910)-686-9114. Respectfully, ENGINEERING CONSULTING SERVICES, LTD. U,4,? Winslow Goins, E.I. Staff Engineer w--- Walid M. Sobh, P.E. Principal Engineer '?? _ NC License tsl "J1 3 O 6 200y APR ? ? of ??? o?? `S? PN?GEM G? PS`CP?- M I' P.O. Box 10434, Wilmington, NC 28404 • (910) 686-9114 • FAX (910) 686-9666 • Jacksonville, NC (910) 355-2727 • www.ecslimited.com Aberdeen, MD* • Atlanta, GA • Austin, TX • Baltimore, MD • Chantilly, VA • Charlotte, NC • Chicago, IL • Cornelia, CA* • Dallas, TX • Danville, VA* • Frederick, MD • Fredericksburg, VA Greensboro, NC • Greenville, SC • Norfolk, VA • Orlando, FL • Research Triangle Park, NC • Richmond, VA • Roanoke, VA • San Antonio, TX • Williamsburg, VA • Wilmington, NC • Winchester, VA *Testing Services Only Report of Field and Laboratory Testing Figure Eight Island Wilmington, North Carolina ECS, Ltd. Project No.: 22.10835 1.0 PROJECT OVERVIEW 1.1 Project Description and Scope of Work This report presents the results of our field soil sampling and laboratory tests for the Figure Eight Island located in Wilmington, North Carolina. The Project Location Diagram in the Appendix A shows the location of the site and the approximate location of the soil samples obtained. Our exploration consisted of obtaining soil samples in the channel and on the beach at twenty four selected locations. The sample locations were selected by Criser and Troutman Consulting Engineers. The soil samples from the channel were obtained at the bottom of the channel and at a depth approximately nine feet below mean low water. The soil samples from the beach were obtained at the surface at the mid-tide level of the beach. In conjunction with the field sampling, laboratory testing was performed to characterize the soil samples obtained from the sampling operations. The purpose of this investigation is to visually classify the soil samples and to perform grain size analysis for each sample. 2.0 FIELD EXPLORATION 2.1 Exploration Procedures 2.1.1 Field Testing The soil samples were obtained using a barge mounted rotary drilling rig, which utilized various cutting bits to advance the boreholes to collect the samples at the designated depths. 3.0 EXPLORATION RESULTS 3.1 Site Conditions 0 The channel is on the sound side of Figure Eight Island and south of the ge from thg mainland. ApR 1 1 N °?- 3.2 Soil Conditions and Description plv ?S1?N'40- co STAL M During our investigation at the twenty four selected locations, we encountered typical native soils in each of the samples at this site. The subsurface soils consisted of silty sands, sandy silts, and clean sands. The depths tested vary from location to location due to the natural contours of the bottom of the channel and due to changes in the tide height that occurred during sampling operations. Based on site conditions, we were able to obtain 30 samples from the channel locations instead of the requested 40 samples. The sample depths were adjusted to account for variations in the tide level during sampling operations. III Report of Field and Laboratory Testing Figure Eight Island Wilmington, North Carolina ECS, Ltd. Project No.: 22.10835 4.0 LABORATORY TESTING 4.1 Laboratory Testing Program The laboratory testing program consisted of performing moisture content tests and grain size analysis on the soil samples. All data obtained from the laboratory tests are included in Appendix B and Appendix C of this report. The soil samples collected for this investigation will be retained at our laboratory for a period of sixty (60) days, after which they will be discarded unless other instructions are received as to their disposition. 4.2 Visual Classification An experienced soil engineer classified each soil sample collected based on the texture and ' plasticity in accordance with the Unified Soil Classification System. A brief explanation of the USCS is included with this report and provided on the grain size graphs. 4.3 Laboratory Testing Methods 4.3.1 Grain Size Analysis Tests The sieve analysis is performed by placing a dry soil sample, of known weight in a series of sieves which is moved in a lateral and vertical motion accompanied by jarring to keep the sample continuously moving over the sieves. The amount of soil retained on each sieve is recorded and plotted on a graph with the weight retained on a given sieve on the y-axis, and the sieve openin on the x-axis. ?? The following sieves were used, as requested by Criser and Troutman, et e the distribution of particle sizes of the soil samples: #4, #10, #20, #40, #60, # and # 2I.?QQ4 SUMMARY OF LABORATORY TEST RESUL PQR 1 ?M0-1 -,??l?st, QNa Beach Samples ' P Mid Tide Sam les Gray Sands Gurl- p B-1, B-2, B-3, B-4 Channel Sam ples Gray Sands with shell Brown Sands Gray Silty Sands Gray Silts First Sample (S-1) S-1, S-2, S-3, S-7, S-5 S-6 S-10 S-8, S-12, S-14, S-20 (Bottom of Channel) S-13, S-16 , , S-15, S-17, S-19 Second Sample (S-2) S-1, S-2, S-3, S-6, S-11 S-9 S-11 S-17, (Elevation -9 MLW) S-7, S-10, S-18 , S-18 2 k;J Jill �7 MIA - Jill --r-- - I- W -01i§ -;i- Z'- 14- LU = 0 Q.In Uj w z w CY V) APPENDIX B X11 LABORATORY TEST RESULTS FOR THE BEACH SAMPLES vo PQ? 16 N of GOPS?P?'1 Unified Soil Classification System (ASTM Designation D-2487) Major Division Group Symbol Typical Names Classification Criteria GW Well-graded gravels and gravel- C„ = D,,/DIo Greater than 4 „ .? sand mixtures, little or no fines C? = (D30)2/(DlOxD60) Between 1 and 3 co v ? C, C; Z GP Poorly graded gravels and gravel- w 5 w Not meeting both criteria for GW > '4 ° ° sand mixtures, little or no fines ° U ti o a >°? i? 3 N o GM Silty gravels, gravel-sand-silt a v Atterberg limits plot below "A" line or mixtures v 0 C) c plasticity index less than 4 o 0 o R 3 0 ° G GC Clayey gravels, gravel-sand-clay 0 Atterberg limits plot above "A" line mixtures and plasticity index greater than 7 C* c a) SW Well-graded sands and gravelly o o ° > > „ y o .N Ca = D60/D10 Greater than 6 o .> sands, little or no fines o ° o CZ = (D30)z/(DIOxD60) Between 1 and 3 U° ° °z o Z y z SP Poorly graded sands and gravelly N N Not meeting both criteria for SW sands, little or no fines =? ° a w ° CL SM Silt ilt t d d i U = N Atterberg limits plot below "A" line or o y san s, san -s m x ures o plasticity index less than 4 SC Clayey sands, sand-clay mixtures H 2 o ° Atterberg limits plot above "A" line and plasticity index greater than 7 ML Inorganic silts, very fine sands, Note: U-lint represents approximate upper limit of LL and PI combinations N rock flour, silty or clayey fine for natural soils (empircally determined). ASTM-D2467. °o sands 80 y N _ " z 6 CL Inorganic clays of low to medium 10 "U" LINE ,, v d g plasticity, gravelly clays, sandy a eo "A^ LINE ' y Q o clays, silty clays, lean clays W ' a -.1b =so ?c~ OL Organic silts and organic silty 40 CH. o" o clays of low plasticity MN aON 5 0 ? ° MH Inorganic silts, micaceous or CL O diatomaceous fine sands or silts, 20 a L 0 r elastic silts , to ML a OL CH Inorganic clays of high plasticitiy, o a fat clays 0 10 20 30 40 50 80 70 110 LIUUIO LIMIT, LL OH Organic clays of medium to high Plasticity chart for the ^s i ot?ine-grain of plasticity Tests ad f ti an No. 40 siev Highly organic soils Pt Peat, muck and other highly organic soils FibrougWnN, a er; wi)? ' u N har, btM, or glow N M? % O? P P Go UNIFIED SOIL CLASSIFICATION _, .. _ SYSTEM JUNE 2003 ENGINEERING CONSULTING SERVICES, LTD. 0 v, o M N ? N M 0 0 ti U W 0 Q 0 O 0 _ o 0 0 o •? 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N Vl N r? ? o V ~ 0 I 00 M M I i ---------- - ----- ------ --- - ----- - ---- ----- ------ ----- ------ ------ - - ---- ------ ----- ------ ------- ------ ------ -------- ---- - ------ - - ---- ----- ----- ------ ----- - _.--- ----- - --- ----- --- --- --I -----I ----- -- ?----- -----I ---- ---- -----?----- --- -t -- -- I ------ ` I ---- ? ------- - _ o 0 O b _ ? y N H b L+ a + - Q ? •? U ? I+q - O Cy" .7 cwt ? a ? z C/I o ti a a 'o ,N v O 0? O O II II U U O M 0 0 (D O O 0 O 0 0 0 0 '" duissud ludd"d AMEN U ? b cd cn 0 0 N 0 v, o M N 00 ? O cV ? M 0 1 U W 0 q 0 O Cl N zm - O 0 0 y o ~ O F•1 h O •??/ N ? Vl •r.y Vj 00 M v c M ? I ???? g I I ' i i -----i -- -? ----- ----- ----- ---- ----- ------ ----- ----- ----- ---_- - ------ ---- - ------ ------ ---..- ----- ------ ------ - -- i ----- --- ----- - --_ ----- ---------- ?;_--------- I r -- ----- ----_------- _=--- - --- 7 --- i - ----- ------ ------ i fi -? ---Y _.- i -- ------- - -- I -.-- ---?___- - - - ._ - o 0 O V H b ?aa? a ? o ? ti ,Zt O N .? II II Q) a a .N II II U U c /1 oy o?- OENl C-) CIO b O N CIO O O Cl O O O Cl O O O .?- U 00 [? ?O Vl CT M N au,ssvd ludd"d APPENDIX C LABORATORY RESULTS FOR THE CHANNEL SAMPLES L R PQ \S?ON O 00 -- W ?\? MPNP GO PSG PL 1 Unified Soil Classification System (ASTM Designation D- 2487) Major Division Group Symbol Typical Names Classification Criteria GW Well-graded gravels and gravel- Co = D6,/D,, Greater than 4 N .N sand mixtures, little or no fines c CZ = (D30)2/(DIOxD60) Between 1 and 3 i v v o z GP Poorly graded gravels and gravel- 8 1=11 - Not meeting both criteria for GW °o sand mixtures, little or no fines o w .ro o >° s 0 3 ti o g GM Silty gravels, gravel-sand-silt ? Atterberg limits plot below "A" line or ° mixtures V c plasticity index less than 4 o 0 o n o ° a GC Clayey gravels, gravel-sand-clay . N Atterberg limits plot above "A" line v° mixtures - and plasticity index greater than 7 a cd G D SW Well-graded sands and gravelly o y c .? Co = D60/D10 Greater than 6 o " v sands, little or no fines o °oN ° °o CZ = (D30)2/(DIOxD6O) Between 1 and 3 U° p U ozrv ° z° SP Poorly graded sands and gravelly N ro z Not meeting both criteria for SW y a o sands, little or no fines a a v? y U o c O. Atterberg limits plot below "A" line or o SM Silty sands, sand-silt mixtures o plasticity index less than 4 SC Clayey sands sand-clay mixtures a o Atterberg limits plot above "A" line , and plasticity index greater than 7 ML Inorganic silts, very fine sands, Note' U-line represents approximate upper limit of LL and PI combinations 'N rock flour, silty or clayey fine for natura l soils (cmpircally determined). ASTM-D2487. °o sands 80 ? N i O z y CL Inorganic clays of low to medium 70 U" LINE ? Uv b g plasticity, gravelly clays, sandy s 60 A LINE 01 Q o clays, silty clays, lean clays w a? cd ar `I in Z 50 V. 0 OL Organic silts and organic silty 40 CH. OH o clays of low plasticity ~ dl MN a OX ° MH Inorganic silts, micaceous or diatomaceous fine sands or silts, 20 CL or OL r ) elastic silts w U C1 +o CH Inorganic clays of high plasticitiy 0 L- ML or OL , ° o so ao '° w w ro eo so 00 ++o fat clays LIQUID LIMIT, LL OH Organic clays of medium to high Plasticity ch art for the classification of fine-grained soils. plasticity Tests made on fraction finer than No. 40 sieve High ly organic soils Pt Peat, muck and other highly Fibrous or a N organic soils I c o P P p ? N EME FIV#c6l CLAS IIICATION SYSTEM JUNE 2003 ENGINEERING CONSULTING SERVICES, LTD. v o0 o vi o M N W O ? M ,O O ti U W Q v 0 O O N - O O 0 ? o ~ O ?i y O •N N ?N • r.l Uj r? ? o O 00 M v 0 tip i?I t --d ----- - -- -- 0 0 0 0 o O O CD O b C h .?C V] bA U W v b ? OA cqj Q ro ? z U3 ti O N II II 0 11 1 >? v V ?2 Q O O II II U U a 6 r?"4 OkMEN? v, w t? VJ v, Q M N •-. ??? M PS eurs'svd /udJ.rdd Go `t C> kr) M O 00 O N M .D 0 U W q 0 0 0 N - O O 0 y o C? o Vl p? p ? r? ? 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