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HomeMy WebLinkAbout20140940 Ver 2_CAMA Application_20141007Pat McCrory Governor Natural Resources John E Skvarla, III Secretary October 3, 2014 Division of Coastal Management MEMORANDUM- , . OCT 0 7 2014 TO: Karen Higgins °- , 401 Oversight DEMLR - Surface Water Protection FROM: Jonathan Howell, NC DENR -DCM Assistant Mayor Permits Coordinator 400 Commerce Avenue, Morehead City, NC 28557 (Courier 11- 12 -09) SUBJECT: CAMA / Dredge & Fill Application Review Applicant: Town of North Topsail Beach Modified Phase 1 Emergency Sandbag Revetment Project Location: along the oceanfront beach from 2276 to 2382 New River Inlet Dnve, adjacent to the Atlantic Ocean, in North Topsail Beach, Onslow County Proposed Project: to install a large sandbag revetment ( +/ -1500 linear ft.) to protect the residential structures located along the north end of Topsail Island Please indicate below your agency's position or viewpoint on the proposed project and return this form to Jonathan Howell at the address above by October 29, 2014, If you have any questions regarding the proposed project, contact Jason Dail at (910)796 -7221 when appropriate, in depth comments with supporting data is requested. REPLY: SIGNED 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 DATE N C Division of Coastal Management 127 Cardinal Drive Ext , Wilmington, NC 28405 Phone 910-796-7215 1 FAX 910 -395 -3964 Internet www nccoastalmanagement net An Equal Opportunity \ Affirmative Action Employer DIVISION OF COAS'T'AL MANAGEMENT FIELD INVESTIGA'T'ION REPORT APPLICANT'S NAME Town of North Topsail Beach — "Phase I Emergency Sandbag Revetment" - Modified 2. LOCATION OF PROJECT SITE The project site is located along the oceanfront beach from 2276 to 2382 New River Inlet Drive, adjacent to the Atlantic Ocean, in North Topsail Beach, Onslow County. Photo Index — 2006: 28- (6497) Oceanfront & Inlet 2000: 28- (391). Oceanfront & Inlet 1995: 28- (379). Oceanfront & Inlet State Plane Coordinates — GPS File: P111811B X 2449610 Y.256997 Lat.: 34°31'29.15 "N Long: 77 °20'47 98 "W 3. INVESTIGATION TYPE: CAMA / D &F INVESTIGATIVE PROCEDURE: Dates of Site Visit — Multiple visits between Jan 2013 and September 2014 Was Applicant Present — Yes PROCESSING PROCEDURE. Application Received — Complete 10/3/14 (with exceptions) Office — Wilmington 6 SITE DESCRIPTION: N/A (A) Local Land Use Plan — Town of North Topsail Beach N/A Classification From LUP — No Classification / Developed (B) AEC(s) Involved: OH, IH (C) Water Dependent- Yes (C) Other (Highground) (D) Intended Use. Private /Government —5 0 acres (E) Wastewater Treatment: Existing — Municipal Sewer (217,800 sq ft., Planned - N/A (F) Type of Structures- Existing — Commercial and Residential structures and access -ways Planned — Sand bag revetment (G) Estimated Annual Rate of Erosion 2' /year Source — LTAASCR 2011 Update 7. HABITAT DESCRIPTION [AREA] DREDGED FILLED OTHER (A) Vegetated Wetlands (coastal) N/A N/A N/A (B) Non - Vegetated Wetlands - open N/A 2,300 sq. ft. (sand bags N/A water placed on beach) (C) Other (Highground) N/A 65,200 sq ft. (sand —5 0 acres bags placed on beach) (217,800 sq ft., *N /A — Not applicable sand removed from spit) (D) Total Area Disturbed 6 54 acres (285,300 sq ft.) (E) Primary Nursery Area: No (F) Water Classification- SA Open: NO 8. PROJECT SUMMARY The applicant is proposing to install a large sandbag revetment from 2276 to 2382 New River Inlet Road ( +/- 1,500 linear feet), to protect the residential structures located along the north end of Topsail Island North Topsail Beach — "Phase I Emergency Sandbag Revetment" Project - MODIFIED Page Two 9. PROTECT DESCRIPTION: This CAMA major permit application is a modified version of the CAMA major permit application that was submitted in August 2014 and circulated on, or around August 28, 2014, for the installation of a revetment structure (i.e. "Geo- tube ") along the northern end of North Topsail Beach. The information presented in this application package still includes the installation of a sand bag revetment in the same general area as the "Geo- tube" project; however, this proposal includes the installation of traditional sand bags, in lieu of the large Geo - tube(s). The relative information of the new project is described below. The project site is located in North Topsail Beach, specifically between 2276 and 2382 New River Inlet Road, adjacent to the Atlantic Ocean, in Onslow County. To get to the site from Wilmington take US HWY 17 N to NC Hwy 210, which is located at the Lowe's Home Improvement on US HWY 17. Turn right onto NC Hwy 210 and continue across the Surf City Swing Bridge. Take a left at the first street N. New River Drive (NC Hwy 210). Continue on NC Hwy 210 until you reach the New River Inlet Road (approximately 8.1 Smiles) Turn right onto New River Inlet Road and continue to the far end. Turn left at the stop sign and the project area will be located on the right hand side of the road, just north of the Topsail Reef Condominium complex The project area would span from the north side of the Topsail Reef Condos, north to the property identified by the Onslow County Tax office as 23 82 New River Inlet Road. The current elevation of the project area ranges from approximately 6' NAVD to approximately 8' NAVD. The project site is adjacent to commercial (condos) and residential properties. The project site is bordered by New River Inlet to the north, the Atlantic Ocean to the East and commercial and residential properties to the south and west The high ground portion of the property is primarily un- vegetated with the exception of lawn grasses and ornamental landscaping around the existing homes. The Annual erosion rate in the project area is 2' /year per the Division of Coastal Management's 2011 Annual Erosion Rate maps. Currently, the Town's proposal is to install a large sandbag revetment to protect the 20 or so homes located north of the Topsail Reef Condominium complex. This particular area of North Topsail Beach has experienced "accelerated erosion" within the past 12 -15 months and the shoreline is progressively receding Of the 20 or so properties included in this permit request, roughly 15 are considered "imminently threated ", or have an erosion escarpment within twenty (20) feet of the foundation of the structure(s). The Town of North Topsail Beach currently has an active CAMA Permit (No. 79-10) that authorizes sand deposition along the entire ocean front area of North Topsail Beach. The material used for this project includes excavated material from the New River Inlet Channel Re- alignment project, as well as excavation from a near- shore borrow site. To date, the Town has completed Phase I of the shoreline stabilization/channel re- alignment project, which happens to include the area for which the applicant is requesting the sandbag revetment. Permit No. 79 -10 was originally issued on July 21, 2010, and later amended on June 20, 2014. The permit is scheduled to expire on June 12, 2015. Plans are underway to begin completion of Phases V of the shoreline stabilization project once the moratoriums are lifted for turtle nesting (i.e November 15th) The Town of North Topsail Beach Land Use Plan does not have a "dry sand beach" classification: However; the upland areas of this project are classified as Developed. The waters of the project site are classified as SA by the NC Division of Water Quality. The NC Division of Marine Fisheries has NOT designated this area of New River / Atlantic Ocean as a Primary Nursery Area, and the waters adjacent to the proposed project are CLOSED to the harvesting of shellfish. North 'Topsail Beach — "Phase I Emergency Sandbag Revetment" Project - MODIFIED Page 'Three PROPOSED PROJECT: The applicant is proposing to install approximately 1,500 linear feet of oversized sand bags from roughly 2276 New River Inlet Road to 2382 New River Inlet Road. As proposed, the sand bag revetment would adjoin, or abut, the existing temporary erosion control structure(s) located along the eastern side of Topsail Reef Condominiums and would span north, terminating at 2382 New River Inlet Road (owned by the Town of North Topsail Beach). As designed, the sand bag revetment would consist of multiple bag layers, with a base width of 45' and a crest height of 12' NAVD The proposed sand bag structure would be similar to the existing oversized sand bag revetment located adjacent to the project site, at Topsail Reef, Buildings 1 -5. As described, traditional sandbags (i.e. each tan in color, 3' -5' in width and 7' -15' in length) would be installed along 1,500 linear feet of beach. The sand bags would abut a majority of existing homes in the area, however there are several properties just north of Topsail Reef where the bags would extend oceanward/seaward of the structures approximately 20' -30'. Along these 5 -6 homes, the landward side of the proposed sandbags would be located a distance of 20' -30' away from the foundation of these structures It is believed the intent of this orientation is to create a uniform alignment (i.e. straight line) so that the proposed bags would connect directly to the existing sand bags located at Topsail Reef As proposed, the sand bags would be installed parallel to the shoreline, along the seaward side of the existing homes /dwellings. The sand bags would be placed atop a scour apron that would span the entire length of the project. As stated by the applicant, the sand bag revetment would be for protection of the aforementioned structures, and not for the creation of any new dune, or dune core. Information provided by the applicant's agent (Coastal Planning and Engineering, a.k a CP &E) indicates that a mean high water boundary survey was performed in the vicinity of the proposed project under a contract with Bearing Point Consulting, on August 29, 2014. Based on data collected from the August 29, 2014 survey, it appears the proposed sand bag revetment (seaward toe of eastern most bags) would be placed along an alignment that would extend no more than approximately 7 1' below the mean high water line. However, it appears that additional erosion has taken place in the project area since the August 29, 2014 survey, thereby creating a larger footprint for sand bag placement below the mean high water level. Nevertheless, the applicant has accounted for approximately 2,300 sq. ft. of impacts below the mean high water line and approximately 65,200 sq. ft. of impacts above the mean high water line as a result of the installation of the proposed sand bag revetment. These numbers will likely change again prior to initiation of the project due to the tidal fluctuations and wind/wave energy in the immediate vicinity of the project. According to the application package, site drawings and project narrative, the applicant intends to fill the sand bags with sand currently held in storage from an area north of the project site, labeled and referred to as the "spit ". The spit is a broad, relatively flat, dry sand beach area that is located along the far northeast section of the island. The area is generally undisturbed, with the exception of foot traffic, and vegetation is beginning to propagate throughout. The elevation of the spit is roughly 2' -4' above the normal high water level, with a slight depression in the center. In total, the spit consists of approximately 5.0 acres of what the Town considers premium sand for shoreline protection immediately adjacent to the referenced properties. As designed, the applicant would remove approximately 12 " -15" (top layer) from the spit, or approximately 10,000 cubic yards, which is what the applicant's engineer estimate is needed for the sand bags. In addition, the applicant proposes to haul in, or truck in the remaining 7,000 cubic yards of sand bag fill material from an off -site source. Any fill material trucked in and placed in the bags should be clean, compatible material of similar size, color and shape. North Topsail Beach — "Phase I Emergency Sandbag Revetment" Project - MODIFIED Page Four As planned, the construction methodology would proceed as follows: The Town, or its contractor, would use an excavator and/or front end loader to remove the required amount of material from the spit. Once loaded, the dry sand would be placed in a "hopper" where it would be mixed with seawater (pumped from the surf zone into the hopper) to create a "slurry". From there, the slurry would be pumped into the bags. As I understand the process, the hopper would move up and down the beach, in conjunction with the filling of the bags. In addition, the sand trucked in from the off -site borrow source would be added to the hopper and mixed together, just as the material collected from the spit. Based on historical documentation (i.e. DCM files), it appears the applicant's proposal would result in a sand bag revetment over /atop existing temporary erosion control structures. Our records indicate that several homes in the vicinity of the project site received sand bag permits and actually installed sandbags at these properties back in the 1990's. Some of the sand bags still remain intact and were visible prior to the deposition of sand associated with the shoreline stabilization/channel re- alignment project 10. ANTICIPATED IMPACTS The applicant's proposal to remove sand from the "spit" would result in the disturbance of approximately 5.0 acres of dry sand beach, from which approximately 10,000 cubic yards of material would be removed. The excavated material would be pumped into a 1,500 linear .foot section of sand bags measuring approximately 45' in base width and up to a height of 12' NAVD. Approximately 2,300 sq. ft. (7' x 1,500') of material would be placed at or below the normal high water level, while approximately 65,200 sq. ft. would be placed above the elevation of normal high water. The applicant has provided a copy of the oceanside easement agreement for this project (as it corresponds to the shoreline protection project) and it appears the scope of the work is consistent with the intent of the easement agreement. Impacts to the "spit" area, as a result of project completion, are uncertain and unknown at this time. Increases in turbidity should be expected during the project; however, they should dissipate once the project is complete. Submitted by: Jason Dail Date: October 3, 2014 Office: Wilmington x. t i r off: n � � The Town of North Topsail Beach completed Phase 1 of its multifaceted inlet and shoreline management plan in February 2013 with the repositioning of the New River Inlet ocean bar channel to a more central location between the south end of Onslow Beach and the north end of North Topsail Beach. The material removed during repositioning of the channel was used to construct a beach fill along 7,730 feet of shoreline south of New River Inlet. The condition of the north end of North Topsail Beach prior to construction of the Phase 1 beach fill project is shown in Photo 1 with the condition immediately after construction provided in Photo 2. Photo 1. Pre - Nourishment — November 2012. The eight buildings in the upper left of the photo are the Topsail Reef Condominiums. 10 -, E I V E D E P 21 e X014 Photo 2. Post - Nourishment — February 2013. The ocean bar channel of New River Inlet was moved for the purpose of inducing sand accumulation on the south side of the inlet's ebb tide delta. Based on the documented historic behavior of the inlet, moving the channel to a more central position with an alignment approximately perpendicular to the adjacent shorelines would result in accretion of the shoreline south of the inlet. The time required for the new channel to have a positive impact on the shoreline was estimated to be at least 5 years. Monitoring of the inlet has demonstrated some of the expected results are taking place with sand accumulating on the south side of the inlet, however, the rate of build -up, as predicted, has been relatively slow. As a result, the north end of North Topsail Beach has continued to experience high rates of erosion As of August 2014, most of the fill placed north of the Topsail Reef Condominiums has been lost as shown in Photo 3 to Photo 5. The beach profiles taken at baseline stations 1150 +00 and 1155 +00, located north of the Topsail Reef Condominium (Figure 1), in April 2012 immediately after completion of the Phase 1 beach fill and approximately one year later in May 2014 are provided in Figures 2 and 3, respectively. The minimum distance between the front of the residences north of Topsail Reef and mean high water ( +1.4 feet NAVD) is approximately 65 feet. The average distance between mean high water ( +1.4 feet NAVD) and the front of the five residences located north of Topsail Reef was about 217 feet while the distance from mean high water to the front of the next five residences north of baseline station 1155 +00 averaged 137 feet. Obviously, these distances do not conform to the imminently threated HL ,CM NiLMJNIGT011�, I NC SE 2 6' 2014 definition used by DCM to determine when structures are eligible for temporary protection. However, when the rate of shoreline recession over the approximate one -year post - construction period in taken into account, the continuation of these measured recession rates will ultimately result in all 10 of these home becoming imminently threaten, as defined by DCM, in less than a year. The same holds true for the northern 10 residences. As the shoreline continues to encroach closer to the residences, installation of emergency structures will become increasingly difficult due to having to work in the active surf zone. This could limit construction to times of low water along some sections of the project area. The condition on the north end of the island has continued to deteriorate as demonstrated by Photo 3a which was taken on September 14, 2014. As is evident in Photo 3a, the final remnants of the artificial dune included with the Phase 1 project, which were evident in the August 7, 2014 photo of the area provided in Photo No. 3, has been completely removed. In addition to the threat to the homes, flooding of the area has been exasperated (Photo 6) with flood waters spilling on to New River Inlet Road and side streets during times of high tide. Photo No. 3. View looking north of Topsail Reef Building #1— August 7, 2014. Arrow identifies house shown in Photo No. 4. 12 DCM WILMMGTON, NC SEP2F2011r Figure 1. Baseline stations. Figure 2. Station 1150 +00 showing post- construction profile (May 2012) and April 2014 profile 15 t`1F�t `If1 ll JiI ?G ?U��, NC SE° 2014 April 2014 Profile at baseline station 1150+00 showing malamum, € minimum, and average distance from mean high water ( +1.4 ft NAVD) to 10 front of first five residences north of Topsail Reef Condos i i ♦ � l I I I E I , �� Average Rate of Shoreline Recession �� z Ave = 117 Met (�1150+OD=- 196ft/yr(May 2013to Apr 2014) , � ♦ I I an jj I -in FF'I 4 1S 100 150 1W 50 0 `_U 1W 150 1W 15U 1W JW 4W 4517 5W 550 EW b50 /W /a0 8W 85U 90L) Distance from 11125e)Ine (ft) -Ata 1411jorle 115U+UU -MJX kmdward puslUUn or buiWiE! -Aw_ posmon of first five buildings north of 1 opsall Reef to sta 111034ku -Min landward poedlon of building - -- 2o11 Post Construction 1150+00 Figure 2. Station 1150 +00 showing post- construction profile (May 2012) and April 2014 profile 15 t`1F�t `If1 ll JiI ?G ?U��, NC SE° 2014 RECEIVED '%CM UV r LI M J N G T O N Figure 3. Station 1155 +00 showing post- construction profile (May 2012) and April 2014 profile. The overall management plan for New River Inlet and the shoreline of North Topsail Beach allows for the periodic maintenance of the ocean bar channel in order to keep the channel in its preferred position and alignment. Material removed to maintain the channel is to be used to provide periodic nourishment of the North Topsail Beach shoreline including the shoreline nourished during Phase 1. The conditions of the permits issued for the project only allows maintenance of the channel to be accomplished every four years providing one of two channel maintenance thresholds are met. One channel threshold is associated with shoaling of the channel while the second is based on the position and alignment of the channel. With the initial project being completed in February 2013, the Town of North Topsail Beach is not permitted to maintain the channel until at least the 2016/2017 environmental dredge window. Given the present condition of the shoreline, the Town of North Topsail Beach needs to take immediate emergency measures in order to prevent the loss of the 20 threatened residential structures between now and the time it is permitted to maintain the channel. The temporary sand bag revetment allowed under CAMA (15A NCAC 7H.1700), which is limited to a height of 6 feet above the existing ground and a maximum bottom width of 20 feet, is not adequate to provide the degree of protection deemed necessary to protect the 20 residential structures for a minimum of 2 years. This is evident by the history of failure of previously permitted sandbag revetment in the area as demonstrated in Photo 7. Furthermore, the Topsail Reefs HOA located just south of the proposed project area constructed a revetment similar to that being proposed in this application (Photo 8). This M SAP 9, 6 26 14 Is April 2014 Profile at baseline station 1155+00 showing maximum, 0 m minimum, and average distance from mean high water (f1A ft NAVD) � ^moo t to front of five residences north of station i150+D0 t0 Average Rate of Shoreline Recession A A s ` @ @ 1155 t00 =- 246 41 /yr(May 2013ta Apr 2014} g Oq, Z Z � u w ♦ D O ♦ o� -5 -to _LS -200 -100 0 100 200 300 400 500 600 700 800 900 1000 U00 1200 1300 019maa from R=aga (ft) -Apr-14 Pronle -sta 1155+00 -Aw position affiee buildings north of 100+00 -Max landward positan of buildings - Minlandvrard poshfoi arbilldings - -- 2M Post�nstrurban - 1155+00 RECEIVED '%CM UV r LI M J N G T O N Figure 3. Station 1155 +00 showing post- construction profile (May 2012) and April 2014 profile. The overall management plan for New River Inlet and the shoreline of North Topsail Beach allows for the periodic maintenance of the ocean bar channel in order to keep the channel in its preferred position and alignment. Material removed to maintain the channel is to be used to provide periodic nourishment of the North Topsail Beach shoreline including the shoreline nourished during Phase 1. The conditions of the permits issued for the project only allows maintenance of the channel to be accomplished every four years providing one of two channel maintenance thresholds are met. One channel threshold is associated with shoaling of the channel while the second is based on the position and alignment of the channel. With the initial project being completed in February 2013, the Town of North Topsail Beach is not permitted to maintain the channel until at least the 2016/2017 environmental dredge window. Given the present condition of the shoreline, the Town of North Topsail Beach needs to take immediate emergency measures in order to prevent the loss of the 20 threatened residential structures between now and the time it is permitted to maintain the channel. The temporary sand bag revetment allowed under CAMA (15A NCAC 7H.1700), which is limited to a height of 6 feet above the existing ground and a maximum bottom width of 20 feet, is not adequate to provide the degree of protection deemed necessary to protect the 20 residential structures for a minimum of 2 years. This is evident by the history of failure of previously permitted sandbag revetment in the area as demonstrated in Photo 7. Furthermore, the Topsail Reefs HOA located just south of the proposed project area constructed a revetment similar to that being proposed in this application (Photo 8). This M SAP 9, 6 26 14 April 2014 Profile at baseline station 1155+00 showing maximum, 0 m minimum, and average distance from mean high water (f1A ft NAVD) � ^moo t to front of five residences north of station i150+D0 Average Rate of Shoreline Recession A A ` @ @ 1155 t00 =- 246 41 /yr(May 2013ta Apr 2014} Oq, w ♦ O ♦ o� Figure 3. Station 1155 +00 showing post- construction profile (May 2012) and April 2014 profile. The overall management plan for New River Inlet and the shoreline of North Topsail Beach allows for the periodic maintenance of the ocean bar channel in order to keep the channel in its preferred position and alignment. Material removed to maintain the channel is to be used to provide periodic nourishment of the North Topsail Beach shoreline including the shoreline nourished during Phase 1. The conditions of the permits issued for the project only allows maintenance of the channel to be accomplished every four years providing one of two channel maintenance thresholds are met. One channel threshold is associated with shoaling of the channel while the second is based on the position and alignment of the channel. With the initial project being completed in February 2013, the Town of North Topsail Beach is not permitted to maintain the channel until at least the 2016/2017 environmental dredge window. Given the present condition of the shoreline, the Town of North Topsail Beach needs to take immediate emergency measures in order to prevent the loss of the 20 threatened residential structures between now and the time it is permitted to maintain the channel. The temporary sand bag revetment allowed under CAMA (15A NCAC 7H.1700), which is limited to a height of 6 feet above the existing ground and a maximum bottom width of 20 feet, is not adequate to provide the degree of protection deemed necessary to protect the 20 residential structures for a minimum of 2 years. This is evident by the history of failure of previously permitted sandbag revetment in the area as demonstrated in Photo 7. Furthermore, the Topsail Reefs HOA located just south of the proposed project area constructed a revetment similar to that being proposed in this application (Photo 8). This M SAP 9, 6 26 14 structure has performed well thus far, which lends itself to the construction of a similar structure along the northernmost section of Phase 1 where erosion has been the most severe. Therefore, the Town of North Topsail Beach has elected to install a sand bag structure to achieve an elevation of 12.0 ft. NAVD. A plan view of the sand bag revetment is provided on Sheet 2 of 3 (Figures A and B) and a typical cross - section view of proposed revetment is shown on Sheet 3 of 3 in the Attachments. The proposed sand bag would begin at the existing "super- sized" sandbag revetment at Building #1 of the Topsail Reef Condominium and extend 1,450 feet parallel to the existing shoreline. A 50 -foot return wall would extend landward from the north end of the sand bag structure just north of the home located at 2378 New River Inlet Road. A schematic of the tie -in of the proposed sandbag revetment with the existing Topsail Reef revetment is shown if Figure 4. As indicated in Figure 4 shown in the plan view on Sheet 2 of 3 in the Attachments, outer toe of the proposed sandbag revetment would correspond approximately to the position of the seaward toe of the existing Topsail Reef revetment with the alignment of the proposed sandbag revetment gradually transitioning landward for a distance of about 200 feet. From the end of the transition north to the northern most residential structure, the proposed sandbag revetment would follow an alignment roughly parallel to the seaward most support piles of the threatened residential structures with the landward toe of the revetment positioned as close as practical to the front support piles of the structures. The gradual transition between the Topsail Reef revetment and the proposed sandbag revetment should reduce the concentration of wave energy associated with an approximate 90° change in the alignment of the sandbags and thus reduce the potential for scour at the seaward toe of the bags at that point. Figure 4. Schematic of tie -in of proposed sandbag revetment to the existing Topsail Reef sandbag revetment. 17 R E _"'EIVE: DCM Wii.��ING- 1 ON, N( SEP 2 6 2014 127 Cardinal Drive Ext , Wilmington, NC 28405 Phone 910 - 796 -7215 \ FAX 910 - 395 -3964 Internet www nccoastalmanagement net DOE NP-1 g �'. � � cyl�` � NaI* '-�?' aye .w' �: �F I�• �1 �S 7. � n �.�. s � a, f F' � � � a (last revised 12/27106) North Carolina DIVISION OF COASTAL MANAGEMENT 9. Primary Applicant/ Landowner Information Business Name Project Name (if applicable) Town of North Topsail Beach Phase 1 Emergency Sandbag Revetment Applicant 1 First Name MI Last Name Stuart Agent/ Contractor 1 First Name Turdle Applicant 2 First Name MI Last Name N/A N/A N/A If additional applicants, please attach an additional page(s) with names listed Mailing Address PO Box City State 2008 Loggerhead Court N/A North Topsail Beach NC ZIP Country Phone No FAX No 28460 Onslow 910 - 328 -1349 ext NA N/A Street Address (If different from above) City State ZIP N/A N/A N/A N /A- Email townma nag er @north- topsad-beach org 2.` Agent/Contractorinforination , Business Name Coastal Planning & Engineering of NC, PC Agent/ Contractor 1 First Name MI Last Name James T Jarrett Agent/ Contractor 2 First Name MI Last Name N/A N/A N/A Mailing Address PO Box City State 4038 Masonboro Loop Rd N/A Wilmington NC ZIP Phone No 1 Phone No 2 28409 910- 791 -9494 ext N/A 910 - 264 -2166 ext N/A FAX No North Carolina Professional Engineering License 910 - 791 -4129 005545 Street Address (if different from above) City State ZIP N/A N/A N/A N/A - Emad James Jarrett @cbi com INC 3. Project Location County (can be multiple) Street Address State Rd # Onslow New River Inlet Rd N/A Subdivision Name City State Zip N/A Town of North Topsail Beach NC 28460 Phone No Lot No (s) (if many, attach additional page with Est) 910 - 328 -1349 ext N/A N /A, a In which NC river basin is the project located? b Name of body of water nearest to proposed White Oak River Basin project No native dune grasses are present seaward of the erosion scarp line due to continuing erosion issues and past efforts New River Inlet and Atlantic Ocean c Is the water body identified in (b) above, natural or manmade? d Name the closest major water body to the RNatural ❑Manmade ❑Unknown proposed project site grass (Photo Nos 3 to 5 in the attached Project Narrative) New River Inlet and Atlantic Ocean e Is proposed work within city limits or planning jurisdiction? f If applicable, list the planning jurisdiction or city RYes ❑No limit the proposed work falls within New River Inlet Road is located immediately landward of the homes The residential structures serve as both permanent Town of North Topsail Beach 4. Site Description = a Total length of shoreline on the tract (ft ) b Size of entire tract (sq ft ) Approximately 1,450 feet 198,200 sq ft (4 55 ac) c Size of individual lot(s) d Approximate elevation of tract above NHW N /A, (normal high water) or NWL (normal water (If many lot sizes, please attach additional page with a list) level) approximately +2 to +6 ft above NHW or roughtly +4 to +8 ft NAVD88 e Vegetation on tract No native dune grasses are present seaward of the erosion scarp line due to continuing erosion issues and past efforts associated with Phase 1 of the beach management project Sand fencing and dune vegetation were installed on the artificial dune Included in the beach fill design but the continuing erosion has destroyed almost all of the fencing and grass (Photo Nos 3 to 5 in the attached Project Narrative) f Man -made features and uses now on tract There are currently 20 residential structures located along the ocean shoreline north of the Topsail Reef Condominiums New River Inlet Road is located immediately landward of the homes The residential structures serve as both permanent residences and rental properties g Identify and describe the existing land uses adjacent to the proposed project site The property immediately south of the proposed sand tube Installation is occupied by the Topsail Reef Condominiums To the north, the area is undeveloped and bounded by New River inlet The Topsail Reef Condominiums are protected by a sandbag revetment installed In 2012 h How does local government zone the tract? i Is the proposed project consistent with the R -1 Residential applicable zoning? (Attach zoning compliance certificate, if applicable) ®Yes ❑No DNA j Is the proposed activity part of an urban waterfront redevelopment proposal? ❑Yes RNo k Hasa professional archaeological assessment been done for the tract? If yes, attach a copy NA �t0 M Oil �s`ii;AIii t 01N Ititi I Is the proposed project located in a National Registered Historic District or does it involve a ❑Yes ®No ❑ National Register listed or eligible property? NA m (i) Are there wetlands on the site? ❑Yes ®No (u) Are there coastal wetlands on the site? ❑Yes ®No (m) If yes to either (i) or (u) above, has a delineation been conducted? ❑Yes ❑No (Attach documentation, If available) n Describe existing wastewater treatment facilities N/A o Describe existing drinking water supply source N/A p Describe existing storm water management or treatment systems N/A 5. Activities and Impacts, a Will the project be for commercial, public, or private uses ❑Commercial ❑Public /Government ®Private /Community b Give a brief description of purpose, use, and daily operations of the project when complete The sand bag revetment will provide temporary erosion protection for 20 residential structures north of the Topsail Reef Condominiums and some flood protection to a portion of New River Inlet Road north of Port Drive Flooding in this area is occurring during normal spring high tides due to wave over washing the beach (Photo No 6 in the Attached Project Narrative) A vicinity map, general layout of the proposed sand bag structure, and a typical cross - section of the revetment is provided on Sheets 1 of 3 to 3 of 3 in the Attachments c Describe the proposed construction methodology, types of construction equipment to be used during construction, the number of each type of equipment and where it is to be stored In order to achieve a design elevation of approximately +12 feet NAVD, the revetment will be built on top of the existing grade at the time of construction in a stacked configuration of sand bags The material needed to fill the sand bags will be removed from the sand "spit" shown in Exhibit 1 in the Attachments and transported via dump trucks to designated locations where a hopper, or large container, will be stationed This sand will be supplemented with material from an off - island borrow area as needed The hopper and associated pumps and filling equipment will be stationed within the area to be disturbed as identified in Figure B on Sheet 2 of 3 in the Attachments As the sand bags are filled the hopper and associated pumps used to create the slurry within the hopper will be moved Multiple sand bags can be filled from one hopper location, however, it is anticipated that the hopper and pumps will need to be moved as the work progresses The sand from the borrow site will be placed into the hopper A pump will be used to draw water from the ocean and discharge it into the hopper The sand /water "slurry" in the hopper will then be pumped into the sand bags No open "pit" will be created as all of the pumping will be contained within the hopper and discharged into the sand bags Prior to filling the bags, bulldozers and frontend loaders will be used to grade the area prior to placement of the sand bags and will maneuver the sand bags into position All work will be performed above the NHW line A temporary berm will be formed on the seaward side of the work area and will provide a buffer from wave action The existing material within the footprint of where the sand bags will be placed will be used to create the berm The temporary berm will also inhibit any direct discharge of water from the work area back into the ocean The bulldozer will be on standby during sand bag placement and once the bags have been filled will be used to flatten out the temporary berm and final dress the area d List all development activities you propose The single purpose of the project is to install the temporary sand bag revetment in the area fronting the 20 residential structures north of the Topsail Reef Condominiums ,EC, =I�i ar l Ji "V! `r']I;J i1,� \l ji-j a 9"M. e Are the proposed activities maintenance of an existing project, new work, or both? New Work A total of 15 sandbag structures have been installed along the north end of North Topsail Beach north of Topsail Reef Due to the erosion this area has experienced in recent years, only three of the 15 sandbag structures that have been installed are currently in place in front of existing residences The remainder of the standard size sandbag structures permitted in this area (3 -2 -1 stacked structure) have either been removed or were installed at residential structures that were seaward of the current row of oceanfront homes and no longer exist Although there have been sandbag structures installed in this area in the past, 17 of the 20 residences proposed to be protected by the emergency sand bag revetment do not have sandbag structures installed in front of them The three remaining sandbag revetments, located at 2332, 2334, and 2368 New River Inlet Rd (State Rd 1568) have been buried and are not presently visible as discussed in the attached Protect Narrative f What is the approximate total disturbed land area resulting from the proposed protect? Approximately 8 6 The sand bag revetment would cover approximately 1,450 linear feet of ocean shoreline with ❑Sq Ft or ®Acres a 50 -foot wingwall or tieback on the north end (Sheet 2 of 3 in the Attachments) Installation will disturb an area about 60 feet wide resulting in a total disturbed area of approximately 2 2 acres Construction activities landward of the sand bags, i e placement and filling of hopper between the existing residences and areas between residences and sand bags will disturb approximately 1 4 acres Excavation of material from the sand spit on the north end of the island will disturb approximately 5 0 acres The total disturbed area will be approximately 8 6 acres g Will the proposed project encroach on any public easement, public access way or other area ®Yes ❑No ❑NA that the public has established use of? The sand bag structure will cover the area from the front of the 20 residential structures and extend approximately 45 ft seaward This area is changing dramatically day to day but based on the most recent survey data, the landward portion of the structure would be constructed at an elevation ranging from 5 5 — 6 9 ft NAVD, whereas the seaward edge would extend out to elevations ranging from 0 7 — 5 2 ft NAVD The mean high water elevation is +14 ft NAVD With the sand bag revetment installed (See Figure B on Sheet 2 of 3 in the Attachments) the sand bags may extend seaward of the mean high water elevation of beach Some of the residences north of Topsail Reef presently impose some restrictions on public access during times of high tide As a result, installation of the sand bag structure would not have a significant incremental impact on public access in the project area at the time of high tide h Describe location and type of existing and proposed discharges to waters of the state N/A - No discharges will be made into state waters (see description of construction methodology in item c) i Will wastewater or stormwater be discharged into a wetland? ❑Yes ®No ❑NA If yes, will this discharged water be of the same salinity as the receiving water? ❑Yes ❑No ®NA I Is there any mitigation proposed? If yes, attach a mitigation proposal ❑Yes ®No ❑NA While there is no formal mitigation proposed for the sand bag revetment installation, the Town of North Topsail Beach will continue to monitor the area with beach profile surveys associated with its ongoing inlet/beach management plan The Town expects to perform maintenance of the new channel through New River Inlet in the next 2 to 2 5 years At that time, some of the dredged material could be used to provide beach nourishment in the sand bag project area Maintenance of the inlet channel will be predicated on satisfying conditions contained in DOA permit SAW 2005 -00344 and CAMA permit 79 -10 OL 6. Additional information In addition to this completed application form, (MP -1) the following items below, if applicable, must be submitted in order for the application package to be complete- Items (a) — (f) are always applicable to any ma /or development application Please consult the application instruction booklet on how to properly prepare the required items below a A project narrative (See attached) b An accurate, dated work plat (including plan view and cross - sectional drawings) drawn to scale Please give the present status of the proposed project Is any portion already complete? If previously authorized work, clearly indicate on maps, plats, drawings to distinguish between work completed and proposed No work has been done at the site for this project See Sheets 2 of 3 and 3 of 3 in the Attachments for the plan view of the proposal and a typical cross - section, respectively Sheet 2 of 3 shows both the site plan (Figure A) and the areas that would likely be disturbed during construction (Figure B) c A site or location map that is sufficiently detailed to guide agency personnel unfamiliar with the area to the site (See Sheet 1 of 3 in the Attachments) d A copy of the deed (with state application only) or other instrument under which the applicant claims title to the affected properties NIA e The appropriate application fee Check or money order made payable to DENR f 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 Name See Attached Phone No Address Name Phone No Address Name Phone No Address y g A list of previous state or federal permits issued for work on the project tract Include permit numbers, permittee, and issuing dates Permittee Town of North Topsail Beach (management plan) DOA Permit SAW - 2005 -00344 Permittee Town of North Topsail Beach (management plan) CAMA Permit 79 -10 Permittee town of North Topsail Beach (Off - Island Truck Haul CAMA Permit 191 -05 (As modified) Operation) h Signed consultant or agent authorization form, if applicable i Wetland delineation, if necessary I A signed AEC hazard notice for projects in oceanfront and inlet areas (Must be signed by property owner) k A statement of compliance with the N C Environmental Policy Act (N C G S 113A 1 -10), if necessary If the project involves expenditure of public funds or use of public lands, attach a statement documenting compliance with the North Carolina Environmental Policy Act 7. 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 the conditions and restrictions contained In the permit 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 Date `� Print Name Stuart Turille7� T Signature Please indicate application attachments pertaining to your proposed project ®DCM MP -2 Excavation and Fill Information ❑DCM MP -5 Bridges and Culverts ❑DCM MP -3 Upland Development DDCM MP-4 Structures Information Form DCM MP-2 a-+.: a ....ny �. a 9u, .nom a NON �, s iw;.•sr _.w� .vf and FILL y_R (Except for 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 Please include all supplemental information Describe below the purpose of proposed excavation and /or fill activities. All values should be given in feet. 1. EXCAVATIOji! ❑ a Amount of material to be excavated from below NHW or NWL in cubic yards None c (i) Does the area to be excavated include coastal wetlands /marsh (CW), submerged aquatic vegetation (SAV), shell bottom (SB), or other wetlands (WL)'? if any boxes are checked, provide the number of square feet affected ❑CW ❑SAV ❑SB ❑WL NNone (ii) Describe the purpose of the excavation in these areas N/A 6 b i ype of materai to oe excavateu Beach sand and shell d High- ground excavation in cubic yards Between 14,000 and 17,000 cubic yards to fill the sand bags Material will be obtained from a combination of the sand spit (approximately 10,000 cy) and material trucked in from an off island source (up to 7,000 cy) 5I P 2 r� 2 01? Access Other (excluding Channel Canal Boat Boat Rock Rock shoreline (NLW or Basin Ramp Groin Breakwater stabilization) NWL Length Width Avg Existing NA_ - NA _ Depth Final Project NA NA Depth 1. EXCAVATIOji! ❑ a Amount of material to be excavated from below NHW or NWL in cubic yards None c (i) Does the area to be excavated include coastal wetlands /marsh (CW), submerged aquatic vegetation (SAV), shell bottom (SB), or other wetlands (WL)'? if any boxes are checked, provide the number of square feet affected ❑CW ❑SAV ❑SB ❑WL NNone (ii) Describe the purpose of the excavation in these areas N/A 6 b i ype of materai to oe excavateu Beach sand and shell d High- ground excavation in cubic yards Between 14,000 and 17,000 cubic yards to fill the sand bags Material will be obtained from a combination of the sand spit (approximately 10,000 cy) and material trucked in from an off island source (up to 7,000 cy) 5I P 2 r� 2 01? 2. DISPOSAL OF EXCAVATED MATERIAL ®This section not applcable a Location of disposal area b Dimensions of disposal area Material excavated from a combination of the spit and the off- The approximate area to be covered by the island borrow source will be used to fill sand bags to construct sandbags will be 67,500 sq It (1 55 acres) the revetment Area covered = 1,500 ft long x 45 feet wide C (Q Do you claim title to disposal area? ❑Yes ❑No ®NA (n) If no, attach a letter granting permission from the owner e (i) Does the disposal area include any coastal wetlands /marsh (CW), submerged aquatic vegetation (SAV), shell bottom (SB), or other wetlands (WL)? if any boxes are checked, provide the number of square feet affected ❑CW ❑SAV ❑SB OWL ®None (u) Describe the purpose of disposal in these areas N/A d (Q Will a disposal area be available for future maintenance? ❑Yes ❑No ®NA (u) If yes, where? f (i) Does the disposal include any area in the water? ❑Yes ®No ❑NA (ii) If yes, how much water area is affected? 3. SHORELINE STABILIZAT16N _ El This section not applicable (If development is a'taood grom,. use MP -4 - Structures) , a Type of shoreline stabilization ❑Bulkhead ❑Riprap ❑Breakwater /Sill ❑ Other Geotextile Sand Bap revetment G Average distance waterward of NHW or NWL 0 feet ( e Type of stabilization material Two primary bag dimensions are proposed Per the manufacturer's specifications, both bags, when filled, will have widths of approximately 4 ft and a filled height of between 1 5 ft and 2 0 ft The difference in the two types of bags proposed are their lengths, which are proposed to be 9 ft and 14 ft, respectively The revetment will be constructed out of a combination of these bags to achieve a base width not to exceed 45 ft and an elevation of approximately 12 Oft NAVD g Number of square feet of fill to be placed below water level NONE Bulkhead backfill Riprap Breakwater /Sill Other geotextile sand filled bags I Source of fill material Sand bags will be filled with a combination of sand obtained from the surface of the sand spit located 7 b Length 14bU tt DIUs a bU -Tt wingwall Width Total approximately 45 feet - d Maximum distance waterward of NHW or NWL 71 ft (i) Has there been shoreline erosion during preceding 12 months? ®Yes ❑No ❑NA (n) If yes, state amount of erosion and source of erosion amount information Beach profile surveys taken in the area as part of the Town of North Topsail Beach's shoreline management program have documented shoreline recession rates of between 196 feet/year to 246 feet/year in the area north of Topsail Reef since completion of the Phase 1 beach nourishment project in February 2013 Examples of the profile surveys are provided in Figures 2 and 3 in the Project Narrative h Type of fill material Geotextile bags filled with sand 0CM1 ,N1U\P,11tiG 01 \, NC S C f s� F� adjacent to New River Inlet (see Exhibit 1 in the Attachments) and an off - island borrow source All excavation of the material will be above the NHW line 4. OTHER FILL ACTIVITIES ❑This section not applicable (Excluding Shoreline Stabilization) a 6) Will fill material be brouqht to the site? ®Yes ❑ b (i) Will fill material be placed in coastal No ❑NA If yes, (u) Amount of material to be placed in the water None (iii) Dimensions of fill area N/A (iv) Purpose of fill To fill geotextile sand bags wetlands /marsh (CW), submerged aquatic vegetation (SAV), shell bottom (SB), or other wetlands (WL)? If any boxes are checked, provide the number of square feet affected ❑CW ❑SAV ❑ SB ❑WL ®None (n) Describe the purpose of the fill in these areas To fill geotextile sand bags 5. GENERAL a How will excavated or fill material be kept on site and b What type of construction equipment will be erosion controlled? used (e g , dragime, backhoe, or hydraulic All fill brought to the site will be used to fill geotextile dredge)? sand bags See explanation of construction Bulldozer, dump trucks, frontend loader, methodology in item c of DCM MP -1) water pump C (i) Will navigational aids be required as a result of the d (i) Will wetlands be crossed in transporting project? equipment to project site? ❑Yes ®No ❑Yes ®No ❑NA ❑NA (u) If yes, explain what type and how they will be (n) If yes, explain steps that will be taken to implemented avoid or minimize environmental impacts . XOl&4 Date = Project Name Phase 1 Emergency Sand Bag Revetment — North end North Topsail Beach Applicant Name - Town of North Topsail Beach Applicant Signature 8 x- E_ 3 L i j .e :)U� !" Attachment 2. EXHIBIT 1 - Sand Source 19 90i"; `AI S) E P Ma 0 O O CO )F: LU co If L _" LIO ko rl b C LU tn -j gam. j lz to 0 V. ;:I c x in ul Zza :CDC wwj a 6. (({AVN EM 70-13 O O CO )F: v � � NCDENR North Carolina Department of Environment and Natural Resources Division of Coastal Management Pat McCrory John E Skvarla, III Governor Secretary October 2, 2014 Stuart Turille 2008 Loggerhead Court North Topsail Beach, NC 28460 Dear Mr. Turille: The Division of Coastal Management Wilmington Regional Office received a complete application on August 27, 2014 from the Town of North Topsail Beach for a proposed Sand Tube Revetment, which was circulated to the State and Federal commenting agencies for review. On September 17, 2014, a modification to the original proposal was received by the Division requesting the placement of approximately 35,000 to 50,000 cubic yards of sand on the oceanfront to assist in the construction of the proposed Sand Tube Revetment project. It was determined on September 18, 2014 that the proposed modification was a significant change in the design of the project and would require a re- submittal of the permit application to include re- notification to adjacent property owners, as well as a new public notice and comment period. On September 22, 2014 the Division received notice that the Town no longer wished to pursue the Sand Tube Revetment and would be submitting a new CAMA Major Permit Application requesting a sand bag structure. Due to this, the Division is retiring the original application and will be informing the State and Federal commenting agencies this permit request is no longer valid. We look forward to working with you on the new proposal, and if there is anything the Division can do to help, please let us know. If you have any questions concerning this matter, please feel free to contact me at (252) 808 -2808 (ext. 211) or by e-mail at Jonathan.Howell@ncdenr.gov. Sincerely, Jonathan Howell Asst. Major Permits Coordinator 400 Commerce Ave, Morehead City, NC 28557 -3421 Phone 252 - 808 -28081 FAX 252 - 247 -3330 Internet www nccoastalmanagement net An Equal Opportunity \ Affirmative Action Employer