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Home My WebLink AboutAvon P001-13_FINAL Signed Drawings 30July2021Drawing Title:PROJECT #:APPROVED BY:DRAWN BY:DATE:SCALE:ProjectSite64AS SHOWN30 July 2021JJH252501Project Location& Vicinity MapAvon VillageBeach NourishmentDare County, NCDare County954 Marshall Collins Dr.Manteo, NC 27954Project:Applicant:Directions From Nags Head to Avon:Follow NC-12 S/Cape Hatteras National Park Rdapproximately 40 miles to Avon.Proposed project limits are from the Southern border of Avon Village, extending 2.5 miles North.6426494ANILORACHTR O N LANOISSEFOR P REENIGNESEAL37281HCAIQINGKAZKOW SKILIU HLKProject Site CoordinatesLatitude: 35° 20' 50" NLongitude: 75° 30' 05" W02Scale (miles)Atlantic OceanPamlico SoundCape HatterasLighthouseCape HatterasNational SeashoreProposedBorrowAreaPamlico SoundProposedFill AreaAtlantic OceanHatteras BightCape PointDare County, North CarolinaAlligator RiverAlbermarle SoundCroatan SoundRoanoke SoundPea IslandNationalWildlife RefugeCape HatterasNational SeashoreHatteras InletOcracoke InletOregon InletWancheseRodantheStumpy PointBuxtonAvonHatterasNags HeadOcracoke IslandCape LookoutNational Seashore1212AvonLakeMattamuskeet08Scale (miles)Buxton 1460+00 1480+00 1500+00 1520+00 1540+00 1560+00 1580+00 1600+00 1620+00 1640+00 1660+00 1680+001700+001720+001740+001760+00 N: 610861 E: 3046943 N: 610100 E: 3057206 N: 582100E: 3042206N: 582100E: 3054206 ABCDEFGIH1682+00 1550+00 1590+00 Drawing Title:PROJECT #:APPROVED BY:DRAWN BY:DATE:SCALE:02,000Scale (Feet)Atlantic OceanProposedBorrow Areas3,000 ftVillage Limit1212AS SHOWNJJH02OVERALL PROJECT PLANProject:Applicant:Survey Datum:Horizontal: SPCS NAD '83 (Feet) NC Zone 3200Avon VillageBeach Nourishment ProjectDare County, NCDare County954 Marshall Collins Dr.Manteo, NC 27954Proposed Project Area2.5 miles, 1.0 Million Cubic YardsReach 4 (9,200 ft)828,000 cy (90 cy/ft)Reach 3 (4,000 ft)172,000 cy (43 cy/ft)Cape Hatteras National SeashoreDune (9,200 ft)Average Distance = 3.0 milesCape Hatteras National SeashoreAvon2525ANILORACHTR O N LANOISSEFOR P REENIGNESEAL37281HCAIQINGKAZKOWSKILIU HLKVillage LimitAvon Pier4,300 ftLEGENDApproximate limits of dune fillApproximate limits of dry sand beach at placementSloping beach fill to existing grade12Fill ScheduleReach 3 - North of Avon Pier (4,000 ft):Fill volume = 172,000 cy/ft; Average Fill Density = 43 cy/ftBerm Elevation = +7 ft NAVDSeaward Slope = 1 on 15Reach 4 - South of Avon Pier (9,200 ft):Fill Volume = 828,000 cy; Average Fill Density = 90 cy/ftBerm Elevation = +7 ft NAVDSeaward Slope = 1 on 15Dune Construction:Dune Crest Elevation = +13 ft NAVDDune Crest Width = 20 ftDune Seaward Slope = 1:3Pamlico Sound30 July 2021 1580+00 1585+00 1590+00 1595+00 1600+001605+00 Reach 3172,000 cy4,000 lf*Avon PierNoteFill design is based on the beach condition in July 2020. The actual limitof fill will be the +7 ft NAVD contour at the time of construction.The final configuration and limits of beach construction will be determinedbased on conditions at the time of construction and the aggregate total fillvolume that can be accomplished within the available budget for theproject. The indicated quantities are maximum amounts to be permitted.The project will not fill or cover any emergency shore protectionstructures such as sandbags. Buffers (no work areas) alongshore will bemaintained around areas of active bird nesting at the time of constructionin consultation with NPS biologists. To the extent practicable, theconstruction berm will shift seaward of Mean Low Water at sites of neststhen reenter the existing beach outside of the buffer zone.AS SHOWN30 July 2021JJH04PROJECT PLANReach 3 and 4STA 1578+00 to STA 1608+00DRAWING TITLE:PROJECT #:APPROVED BY:DRAWN BY:DATE:SCALE:Project:Applicant:Survey Datum:Horizontal: SPCS NAD '83 (Feet) NC Zone 3200Vertical: NAVD '88 (Feet)Notes: Data collected by Coastal Science & Engineering, Inc via RTK GPS:Data collected: July 2020Aerial Image: February 2020Avon VillageBeach Nourishment ProjectDare County, NCDare County954 Marshall Collins Dr.Manteo, NC 27954LEGENDMHW (+1.05 FT NGVD)MLW (-1.94 FT NGVD)FIRST LINE OF VEGETATIONDUNE FILL CREST (+13 ft NAVD)Slope @ 1 on 30200Scale (Feet)MHW (+1.05 ft NAVD)MLW (-1.94 ft NAVD)~Dune Crest @ +13 ft NAVD~Landward Fill Limit~Landward Fill Limit@+7 ft NAVD~Berm Fill Limit@+7 ft NAVD~Slope Toe Fill LimitElevation VariesNote:Dunes will be built along Reach 4 during nourishment construction.The dune crest will be at +13 ft NAVD and the typical width of thedune crest will be 20 ft. The seaward slope of the dune will be at 1on 3. The constructed dry sand berm (@+7 ft NAVD) in front of thetoe of the dune will be 100-200 ft wide.* No fill is to be placed under Pier,exposed walkovers or houses.Atlantic Ocean2525ANILORACHTR O N LANOISSEFOR P REENIGNESEAL37281HCAIQINGKAZKOWSKILIU HLKFill ScheduleReach 3 - North of Avon Pier (4,000 ft):Fill volume = 172,000 cy/ft; Average Fill Density = 43 cy/ftBerm Elevation = +7 ft NAVDSeaward Slope = 1 on 15No dune to be constructed along Reach 3.Reach 4 - South of Avon Pier (9,200 ft):Fill Volume = 828,000 cy; Average Fill Density = 90 cy/ftBerm Elevation = +7 ft NAVDSeaward Slope = 1 on 15Dune Construction:Dune Crest Elevation = +13 ft NAVDDune Crest Width = 20 ftDune Seaward Slope = 1:3BERM FILL - DRY BEACH (+7 ft NAVD)FILL SLOPE TO TOEReach 4828,000 cy9,200 lf1590+00(Continued)(Continued)Ocean View DrDune Way Moore Way 1610+00 1615+00 1620+00 1625+00 1630+001635+00NoteFill design is based on the beach condition in July 2020. The actual limitof fill will be the +7 ft NAVD contour at the time of construction.The final configuration and limits of beach construction will be determinedbased on conditions at the time of construction and the aggregate total fillvolume that can be accomplished within the available budget for theproject. The indicated quantities are maximum amounts to be permitted.The project will not fill or cover any emergency shore protectionstructures such as sandbags. Buffers (no work areas) alongshore will bemaintained around areas of active bird nesting at the time of constructionin consultation with NPS biologists. To the extent practicable, theconstruction berm will shift seaward of Mean Low Water at sites of neststhen reenter the existing beach outside of the buffer zone.AS SHOWN30 July 2021JJH05PROJECT PLANReach 4STA 1608+00 to STA 1640+00DRAWING TITLE:PROJECT #:APPROVED BY:DRAWN BY:DATE:SCALE:Project:Applicant:Survey Datum:Horizontal: SPCS NAD '83 (Feet) NC Zone 3200Vertical: NAVD '88 (Feet)Notes: Data collected by Coastal Science & Engineering, Inc via RTK GPS:Data collected: July 2020Aerial Image: February 2020Avon VillageBeach Nourishment ProjectDare County, NCDare County954 Marshall Collins Dr.Manteo, NC 27954LEGENDMHW (+1.05 FT NGVD)MLW (-1.94 FT NGVD)FIRST LINE OF VEGETATIONDUNE FILL CREST (+13 ft NAVD)Slope @ 1 on 30200Scale (Feet)MHW (+1.05 ft NAVD)MLW (-1.94 ft NAVD)~Dune Crest @ +13 ft NAVD~Berm Fill Limit@+7 ft NAVD~Slope Toe Fill LimitElevation VariesNote:Dunes will be built along Reach 4 during nourishment construction.The dune crest will be at +13 ft NAVD and the typical width of thedune crest will be 20 ft. The seaward slope of the dune will be at 1on 3. The constructed dry sand berm (@+7 ft NAVD) in front of thetoe of the dune will be 100-200 ft wide.* No fill is to be placed under Pier,exposed walkovers or houses.Atlantic Ocean2525ANILORACHTR O N LANOISSEFOR P REENIGNESEAL37281HCAIQINGKAZKOWSKILIU HLKReach 4 - South of Avon Pier (9,200 ft):Fill Volume = 828,000 cy; Average Fill Density = 90 cy/ftBerm Elevation = +7 ft NAVDSeaward Slope = 1 on 15Dune Construction:Dune Crest Elevation = +13 ft NAVDDune Crest Width = 20 ftDune Seaward Slope = 1:3BERM FILL - DRY BEACH (+7 ft NAVD)FILL SLOPE TO TOEReach 4828,000 cy9,200 lf(Continued)(Continued)Ocean View DrOcean View DrOcean View DrTern St Yucca St Pampas St 1640+00 1645+00 1650+00 1655+00 1660+00 1665+001670+00NoteFill design is based on the beach condition in July 2020. The actual limitof fill will be the +7 ft NAVD contour at the time of construction.The final configuration and limits of beach construction will be determinedbased on conditions at the time of construction and the aggregate total fillvolume that can be accomplished within the available budget for theproject. The indicated quantities are maximum amounts to be permitted.The project will not fill or cover any emergency shore protectionstructures such as sandbags. Buffers (no work areas) alongshore will bemaintained around areas of active bird nesting at the time of constructionin consultation with NPS biologists. To the extent practicable, theconstruction berm will shift seaward of Mean Low Water at sites of neststhen reenter the existing beach outside of the buffer zone.AS SHOWN30 July 2021JJH06PROJECT PLANReach 4STA 1640+00 to STA 1670+00DRAWING TITLE:PROJECT #:APPROVED BY:DRAWN BY:DATE:SCALE:Project:Applicant:Survey Datum:Horizontal: SPCS NAD '83 (Feet) NC Zone 3200Vertical: NAVD '88 (Feet)Notes: Data collected by Coastal Science & Engineering, Inc via RTK GPS:Data collected: July 2020Aerial Image: February 2020Avon VillageBeach Nourishment ProjectDare County, NCDare County954 Marshall Collins Dr.Manteo, NC 27954LEGENDMHW (+1.05 FT NGVD)MLW (-1.94 FT NGVD)FIRST LINE OF VEGETATIONDUNE FILL CREST (+13 ft NAVD)Slope @ 1 on 30200Scale (Feet)MHW (+1.05 ft NAVD)MLW (-1.94 ft NAVD)~Dune Crest @ +13 ft NAVD~Berm Fill Limit@+7 ft NAVD~Slope Toe Fill LimitElevation VariesNote:Dunes will be built along Reach 4 during nourishment construction.The dune crest will be at +13 ft NAVD and the typical width of thedune crest will be 20 ft. The seaward slope of the dune will be at 1on 3. The constructed dry sand berm (@+7 ft NAVD) in front of thetoe of the dune will be 100-200 ft wide.* No fill is to be placed under Pier,exposed walkovers or houses.Atlantic Ocean2525ANILORACHTR O N LANOISSEFOR P REENIGNESEAL37281HCAIQINGKAZKOWSKILIU HLKReach 4 - South of Avon Pier (9,200 ft):Fill Volume = 828,000 cy; Average Fill Density = 90 cy/ftBerm Elevation = +7 ft NAVDSeaward Slope = 1 on 15Dune Construction:Dune Crest Elevation = +13 ft NAVDDune Crest Width = 20 ftDune Seaward Slope = 1:3BERM FILL - DRY BEACH (+7 ft NAVD)FILL SLOPE TO TOEReach 4828,000 cy9,200 lf(Continued)(Continued)Ocean View DrGreenwood PlSeaside St 1670+00 1675+00 1680+00 1685+00 1690+001695+00NoteFill design is based on the beach condition in July 2020. The actual limitof fill will be the +7 ft NAVD contour at the time of construction.The final configuration and limits of beach construction will be determinedbased on conditions at the time of construction and the aggregate total fillvolume that can be accomplished within the available budget for theproject. The indicated quantities are maximum amounts to be permitted.The project will not fill or cover any emergency shore protectionstructures such as sandbags. Buffers (no work areas) alongshore will bemaintained around areas of active bird nesting at the time of constructionin consultation with NPS biologists. To the extent practicable, theconstruction berm will shift seaward of Mean Low Water at sites of neststhen reenter the existing beach outside of the buffer zone.AS SHOWN30 July 2021JJH07PROJECT PLANReach 4STA 1670+00 to STA 1682+00DRAWING TITLE:PROJECT #:APPROVED BY:DRAWN BY:DATE:SCALE:Project:Applicant:Survey Datum:Horizontal: SPCS NAD '83 (Feet) NC Zone 3200Vertical: NAVD '88 (Feet)Notes: Data collected by Coastal Science & Engineering, Inc via RTK GPS:Data collected: July 2020Aerial Image: February 2020Avon VillageBeach Nourishment ProjectDare County, NCDare County954 Marshall Collins Dr.Manteo, NC 27954LEGENDMHW (+1.05 FT NGVD)MLW (-1.94 FT NGVD)FIRST LINE OF VEGETATIONDUNE FILL CREST (+13 ft NAVD)Slope @ 1 on 30200Scale (Feet)MHW (+1.05 ft NAVD)MLW (-1.94 ft NAVD)~Dune Crest @ +13 ft NAVD~Berm Fill Limit@+7 ft NAVD~Slope Toe Fill LimitElevation VariesNote:Dunes will be built along Reach4 during nourishment construction.The dune crest will be at +13 ft NAVD and the typical width of thedune crest will be 20 ft. The seaward slope of the dune will be at 1on 3. The constructed dry sand berm (@+7 ft NAVD) in front of thetoe of the dune will be 100-200 ft wide.* No fill is to be placed under Pier,exposed walkovers or houses.Atlantic Ocean2525ANILORACHTR O N LANOISSEFOR P REENIGNESEAL37281HCAIQINGKAZKOWSKILIU HLKReach 4 - South of Avon Pier (9,200 ft):Fill Volume = 828,000 cy; Average Fill Density = 90 cy/ftBerm Elevation = +7 ft NAVDSeaward Slope = 1 on 15Dune Construction:Dune Crest Elevation = +13 ft NAVDDune Crest Width = 20 ftDune Seaward Slope = 1:3BERM FILL - DRY BEACH (+7 ft NAVD)FILL SLOPE TO TOEReach 4828,000 cy9,200 lfProject Fill Limit (Sta 1682+00)Village LimitCape HatterasNational SeashoreNo Work1212Beach Access Ramp 38(Continued) DRAWING TITLE:PROJECT #:APPROVED BY:DRAWN BY:DATE:SCALE:AS SHOWN30 July 2021JJH08PLAN FILL SECTIONSSTA 1550+00 to 1590+00Project:Applicant:Survey Datum:Horizontal: SPCS NAD '83 (Feet) NC Zone 3200Vertical: NAVD '88 (Feet)Vertical Exaggeration: 10:1Notes: Data collected by Coastal Science & Engineering, Inc via RTK GPS:Data collected: July 2020Avon VillageBeach NourishmentDare County, NCDare County954 Marshall Collins Dr.Manteo, NC 27954MHW (+1.05 ft NAVD)MLW (-1.94 ft NAVD)HLK2525HCAIQINGKAZKOW SKILIU DRAWING TITLE:PROJECT #:APPROVED BY:DRAWN BY:DATE:SCALE:AS SHOWN30 July 2021JJH09PLAN FILL SECTIONSSTA 1595+00 to 1635+00Project:Applicant:Survey Datum:Horizontal: SPCS NAD '83 (Feet) NC Zone 3200Vertical: NAVD '88 (Feet)Vertical Exaggeration: 10:1Notes: Data collected by Coastal Science & Engineering, Inc via RTK GPS:Data collected: July 2020Avon VillageBeach NourishmentDare County, NCDare County954 Marshall Collins Dr.Manteo, NC 27954MHW (+1.05 ft NAVD)MLW (-1.94 ft NAVD)HLK2525HCAIQINGKAZKOW SKILIU DRAWING TITLE:PROJECT #:APPROVED BY:DRAWN BY:DATE:SCALE:AS SHOWN30 July 2021JJH10PLAN FILL SECTIONSSTA 1640+00 to 1680+00Project:Applicant:Survey Datum:Horizontal: SPCS NAD '83 (Feet) NC Zone 3200Vertical: NAVD '88 (Feet)Vertical Exaggeration: 10:1Notes: Data collected by Coastal Science & Engineering, Inc via RTK GPS:Data collected: July 2020Avon VillageBeach NourishmentDare County, NCDare County954 Marshall Collins Dr.Manteo, NC 27954MHW (+1.05 ft NAVD)MLW (-1.94 ft NAVD)HLK2525HCAIQINGKAZKOW SKILIU Locations, mean grain size, percent shell, and percent gravel for core composite samples to 10-ft in theproposed Avon Borrow Area 1 and 6-ft in Borrow Area 2 based on borings obtained in April 2021.Notes:Beach sediment samples (n=70) obtained in March 2020 and analyzed by Coastal Science & Engineering, Inc.Offshore borings obtained in April 2021 (10-ft long, 3 inch tubes). Grain size distributions based on dry sievingat 0.25 phi intervals.DRAWING TITLE:PROJECT #:APPROVED BY:DRAWN BY:DATE:SCALE:AS SHOWNJJH12BORROW AREA CORES &SEDIMENT ANALYSISProject:Applicant:Avon VillageBeach Nourishment ProjectDare County, NCDare County954 Marshall Collins Dr.Manteo, NC 27954* Ra - Overfill factor. It provides a measure of how a particular sediment will perform as beach nourishment. LowRa's are generally preferred, with ideal being equal to 1.0. See Appendix A for detailed geotechnical data.2525ANILORACHTR O N LANOISSEFOR P REENIGNESEAL37281HCAIQINGKAZKOWSKILIU HLKComparing grain size distribution in Borrow Area 1 (10-ft cut)to the native beach.Comparing grain size distribution in Borrow Area 2 (6-ft cut)to the native beach.30 July 2021 Notes:Sand fencing will be installed and vegetation will be plantedalong the entire project area following nourishment completion.DRAWING TITLE:PROJECT #:APPROVED BY:DRAWN BY:DATE:SCALE:AS SHOWNJJH13SAND FENCING &VEGETATIONProject:Applicant:Avon VillageBeach Nourishment ProjectDare County, NCDare County954 Marshall Collins Dr.Manteo, NC 27954B e a c hOwner Access030Scale (Feet)40 ft(Typical)Public Beach AccessOwner AccessOwner AccessLandward Dune CrestSeaward Dune CrestDune ToeBuildingA t l a n t i c O c e a nB e a c h10 ft(Typical)Dune FaceThe general sand-fencing installation guidance issued by USFWS/NCDCM statesbelow.·All sand fencing installations will comply all current statutes and regulations asspecified by the NCDCM and under the NC Coastal Area Management Act (CAMA).·Sand fence will be placed in a sea turtle compatible design and be made ofbiodegradable material.·Sand fence will be installed on the newly constructed dune crest and not down theslope of the dune.·Sand fence will be designed and installed as follows: a maximum of ten (10) footlong spurs of sand fencing spaced at a minimum of seven (7) feet on a diagonalalignment (facing the predominate wind direction - from the south for the Avonproject area)·Only one row of sand fencing will be installed in sea turtle nesting habitat.·Existing native dune vegetation will be disturbed only to the minimum extentnecessary. Only native, salt tolerant plan species will be installed.·Education signs will be placed where appropriate at beach access pointsexplaining the importance of the area to sea turtles and/or the life history of seaturtle species that nest in the area.Landward Dune Crest Limit7' - 0" Apart20' Dune Crest (Typical)10'Sea Oats, Bitter Panicum (NorthPa Variety) or other species.Dune FaceDune FaceDune FaceAmerican BeachgrassSeaward Dune Crest Limit7' - 0" ApartDune Crest(Shaded Area)2525ANILORACHTR O N LANOISSEFOR P REENIGNESEAL37281HCAIQINGKAZKOWSKILIU HLKFencing & VegetationFence Post (Typical)Sand Fence (Typical)Vegetation Planted 24" O.C.(Typical)Typical Newly Constructed DuneCrest @ +13 ft NAVDNewly Constructed Dune Crest @ +13 ft NAVDalong Reach 4 or Natural Dune along Reach 3Dune Crest Plan View(Typical Newly Constructed Dune @ +13 ft NAVD along Reach 4 or Natural Dune along Reach 3)Landward Dune Crest LimitSeaward Dune Crest LimitSlope Slope Slope Slope Slope Slope Slope Slope Slope Slope Slope Slope Dune Crest(Shaded Area)Slope Slope SlopeSlopeSlopeSlopeSlope Slope Slope Slope Slope Slope Slope Slope Landward Dune CrestSeaward Dune Crest30 July 2021