B08_Section_J_Attachment_9_Underwater_Inspection.pdf

Hurricane Ian Damage Assessment

October 2022

Dry Tortugas National Park

Fort Jefferson Counterscarp

The DRTO Park Manager, Glen Simpson, and members of the condition assessment team performed an inspection of the Fort Jefferson Counterscarp Wall and Moat Bridge on October 9, 2022, following

Hurricane Ian to document the additional damage caused by the storm.

Findings

First, team members did a walk-around with DRTO Park Manager to get an overview of the new damage of the brick veneer and walking surface and the ocean side and moat side of the counterscarp structure.

The elements of the counterscarp structure are divided into four sections: the cap or walking surface, the brick veneer or side walls, the core of the structure, and the foundation/footing.

These elements sustained additional damage from Hurricane Ian. The DRTO Park Manager, Mr.

Simpson, estimated the percentage of the additional damage caused by the storm to be:

• The walking surface sustained an estimated 50-60 % additional damage; this estimate is reasonable by evidence of new cracks compared to older/weathered cracks

• The brick veneer sustained an estimated 60-70% additional damage; this estimate is reasonable by evidence of clean/recently exposed mortar compared to older mortar with growth and moss

• The core sustained an estimated 25% additional damage; this estimate is reasonable by evidence that was captured by the team with under visual inspection and video

• The foundation is underwater, so an initial estimate was not given by DRTO Park Manager;

however, see the list below detailing the damage captured by the team via visual inspection and video

Team members inspected the underwater portion of the counterscarp using snorkeling gear and an underwater camera. The team only inspected and inventoried the inside, underwater section of the structure. The team captured underwater photos and videos of the damage areas that are described as scour pockets, spalls, and cracks. A core failure is categorized as a crack that runs through the counterscarp wall structure, typically where it transitions from wall section to footing section of the counterscarp. Points #1, #14, and #15 are the most severe areas of damage, bolded in the list below.

Points #14 and #15 are core failures or cracks that pass through the structure and Point #1 is a severe scour that is under a large portion of the footing/foundation. The other points are under washed or undermined areas that scour under the entire counterscarp wall structure and scour pockets that do not pass completely through or under the structure. The numbers below correlate with Appendix A, which is in the order of the inspection path completed in the field.

1. 24.62756 -82.87426, At this location the fuel line for the site’s power supply crosses underwater from the counterscarp to the fort. Scour passes completely under the counterscarp structure. 20’ wide x 10’ deep (variable). This undermined section of the structure is completely unsupported by a foundation. This is an area of immediate concern.

This void is suspected to be an expansion of previous damage that correlates to the Structural

Assessment Report 06-21-19 counterscarp defect #39.

2. 24.62801 -82.87445, Void 5’ wide x 1’ tall x 1’ deep

3. 24.62955 -82.87401, Void 3’ wide x 6” tall x 1’ deep

4. 24.62959 -82.87392, Void 2’wide x 1’ tall x 1’deep

5. 24.62974 -82.87360, Steel culvert, 2 ft diameter

6. 24.62984 -82.87348, Several voids, 6’wide x 6-8” high x 2’ deep

7. 24.62998 -82.87326, Undermine scour passes all the way through, 5’ wide x 3’ high

8. 24.63002 -82.87323, Undermine scour passes all the way through?

9. 24.63003 -82.87323, Undermine scour passes all the way through?

10. 24.63005 -82.87316, Void 2’ wide x 2’ high x 1’ deep

11. 24.63005 -82.87310, Void 3’ wide x 2’ high x 1’ deep

12. 24.63006 -82.87314, Void 3’ wide x 2’ high x 2’ deep

13. 24.62991 -82.87283, Void 3’ wide x 1’ high x 2’ deep

14. 24.62987 -82.87273, Core Failure, 4’ wide x 3”-4” high void all the way through. This is an area of immediate concern.

15. 24.62972 -82.87242, Core Failure, 15’ wide x 1’ high void all the way through (creates scour).

This is an area of immediate concern. This void is suspected to be new damage that correlates to the Structural Assessment Report_06-21-19 counterscarp defect #4.

16. 24.62832 -82.87444, void passes through 1’ wide x 2’ high. This void is suspected to be new damage that correlates to the Structural Assessment Report_06-21-19 counterscarp defect #38.

The moat bridge was inspected by the team. The Park Manager was concerned about the capstone on the counterscarp wall section of the bridge. The bridge lifted during the storm and the capstones on this section moved. The capstones appear to be four (4) flagstones – 4” thick, 30” deep, and combined length is 14’ long. The wood structural framing of the bridge is anchored to the stone with stainless steel fasteners. The capstones are out of place, but still in good condition. The team observed and videoed heavy equipment traveling across the bridge and the capstones did not move. The capstones are stable with no signs of damage other than being slightly out of place and the mortar cracked and/or missing.

Research

• A Structural Assessment Report for the Counterscarp was completed on June 21, 2019, which the team was able to review after the site visit.

• Construction Drawings by the Denver Service Center, June 24, 2022, which the team was able to review after the site visit.

• Project and Component Data Report, PMIS 391320, 244370, 244372

Recommendations

Counterscarp

The Condition Assessment Team recommends modifying the current active contract for the counterscarp, PMIS 244370 and 244372, to include the additional damage caused by Hurricane Ian. The contractor shall verify the extent of the additional damage and adjust the proposal accordingly.

Moat Bridge

The Condition Assessment Team recommends modifying the current active contract for the decking replacement of the moat bridge, PMIS 319320, to include the resetting of the four (4) capstones at the counterscarp wall section of the moat bridge while the decking is off the bridge.

Condition Assessment Team Members

1. Christy Nagel, Facility Operations Specialist, WASO, Team Lead

2. James Crutchfield, Exhibit Specialist, HPTC

3. Scott Mapes, Exhibit Specialist, HPTC

4. Zachary Fratto, Biological Science Technician, EVER

5. Mike Lockman, Archeologist, SEAC

6. Ian Pierson, Regional FMSS Specialist, IR2

7. Cephus Bragg, Management Analyst, IR2

8. Steven Tidwell, Project Manager/Engineer, IR2

9. Kris Neset, Project Manager/Engineer, DSC

Appendices

• Appendix A, Aerial Photo

FLORIDA CERTIFICATE OF AUTHORIZATION NUMBER LB24

ATKINS NORTH AMERICA, INC.

800 WATERFORD WAY

SUITE 700

MIAMI, FL

33126

(305) 592-7275

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DEPARTMENT OF THE INTERIOR

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REVISIONS

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BY

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DATE

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OF

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SHEET

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PKG.

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NO.

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DRAWING NO.

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DENVER SERVICE CENTER

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UNITED STATES

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NATIONAL PARK SERVICE

AutoCAD SHX Text All survey work was conducted during the week of March 4 to March 9, 2019. survey work was conducted during the week of March 4 to March 9, 2019. survey work was conducted during the week of March 4 to March 9, 2019. work was conducted during the week of March 4 to March 9, 2019. work was conducted during the week of March 4 to March 9, 2019. was conducted during the week of March 4 to March 9, 2019. was conducted during the week of March 4 to March 9, 2019. conducted during the week of March 4 to March 9, 2019. conducted during the week of March 4 to March 9, 2019. during the week of March 4 to March 9, 2019. during the week of March 4 to March 9, 2019. the week of March 4 to March 9, 2019. the week of March 4 to March 9, 2019. week of March 4 to March 9, 2019. week of March 4 to March 9, 2019. of March 4 to March 9, 2019. of March 4 to March 9, 2019. March 4 to March 9, 2019. March 4 to March 9, 2019. 4 to March 9, 2019. 4 to March 9, 2019. to March 9, 2019. to March 9, 2019. March 9, 2019. March 9, 2019. 9, 2019. 9, 2019. 2019. 2019. The Scope of Work included topographic mapping of the Fort Jefferson outer Scope of Work included topographic mapping of the Fort Jefferson outer Scope of Work included topographic mapping of the Fort Jefferson outer of Work included topographic mapping of the Fort Jefferson outer of Work included topographic mapping of the Fort Jefferson outer Work included topographic mapping of the Fort Jefferson outer Work included topographic mapping of the Fort Jefferson outer included topographic mapping of the Fort Jefferson outer included topographic mapping of the Fort Jefferson outer topographic mapping of the Fort Jefferson outer topographic mapping of the Fort Jefferson outer mapping of the Fort Jefferson outer mapping of the Fort Jefferson outer of the Fort Jefferson outer of the Fort Jefferson outer the Fort Jefferson outer the Fort Jefferson outer Fort Jefferson outer Fort Jefferson outer Jefferson outer Jefferson outer outer outer counterscarp (moat wall), plus other defined areas on the Island of Garden (moat wall), plus other defined areas on the Island of Garden (moat wall), plus other defined areas on the Island of Garden wall), plus other defined areas on the Island of Garden wall), plus other defined areas on the Island of Garden plus other defined areas on the Island of Garden plus other defined areas on the Island of Garden other defined areas on the Island of Garden other defined areas on the Island of Garden defined areas on the Island of Garden defined areas on the Island of Garden areas on the Island of Garden areas on the Island of Garden on the Island of Garden on the Island of Garden the Island of Garden the Island of Garden Island of Garden Island of Garden of Garden of Garden Garden Garden Key. All data was collected utilizing a combination Trimble R-10 GPS Receivers, data was collected utilizing a combination Trimble R-10 GPS Receivers, data was collected utilizing a combination Trimble R-10 GPS Receivers, was collected utilizing a combination Trimble R-10 GPS Receivers, was collected utilizing a combination Trimble R-10 GPS Receivers, collected utilizing a combination Trimble R-10 GPS Receivers, collected utilizing a combination Trimble R-10 GPS Receivers, utilizing a combination Trimble R-10 GPS Receivers, utilizing a combination Trimble R-10 GPS Receivers, a combination Trimble R-10 GPS Receivers, a combination Trimble R-10 GPS Receivers, combination Trimble R-10 GPS Receivers, combination Trimble R-10 GPS Receivers, Trimble R-10 GPS Receivers, Trimble R-10 GPS Receivers, R-10 GPS Receivers, R-10 GPS Receivers, GPS Receivers, GPS Receivers, Receivers, Receivers, Trimble S-6 Total Stations, Leica N-A3 C-10 Laser Scanner and Hydrolite S-6 Total Stations, Leica N-A3 C-10 Laser Scanner and Hydrolite S-6 Total Stations, Leica N-A3 C-10 Laser Scanner and Hydrolite Total Stations, Leica N-A3 C-10 Laser Scanner and Hydrolite Total Stations, Leica N-A3 C-10 Laser Scanner and Hydrolite Stations, Leica N-A3 C-10 Laser Scanner and Hydrolite Stations, Leica N-A3 C-10 Laser Scanner and Hydrolite Leica N-A3 C-10 Laser Scanner and Hydrolite Leica N-A3 C-10 Laser Scanner and Hydrolite N-A3 C-10 Laser Scanner and Hydrolite N-A3 C-10 Laser Scanner and Hydrolite C-10 Laser Scanner and Hydrolite C-10 Laser Scanner and Hydrolite Laser Scanner and Hydrolite Laser Scanner and Hydrolite Scanner and Hydrolite Scanner and Hydrolite and Hydrolite and Hydrolite Hydrolite Hydrolite Systems for soundings. MONUMENTS Vertical control was referenced to the Mean Low Lower Water (MLLW) from control was referenced to the Mean Low Lower Water (MLLW) from control was referenced to the Mean Low Lower Water (MLLW) from was referenced to the Mean Low Lower Water (MLLW) from was referenced to the Mean Low Lower Water (MLLW) from referenced to the Mean Low Lower Water (MLLW) from referenced to the Mean Low Lower Water (MLLW) from to the Mean Low Lower Water (MLLW) from to the Mean Low Lower Water (MLLW) from the Mean Low Lower Water (MLLW) from the Mean Low Lower Water (MLLW) from Mean Low Lower Water (MLLW) from Mean Low Lower Water (MLLW) from Low Lower Water (MLLW) from Low Lower Water (MLLW) from Lower Water (MLLW) from Lower Water (MLLW) from Water (MLLW) from Water (MLLW) from (MLLW) from (MLLW) from from from Tidal Benchmark 872-4697, NOAA Chart 11438, USGS Quadrangle Map: Dry Benchmark 872-4697, NOAA Chart 11438, USGS Quadrangle Map: Dry Benchmark 872-4697, NOAA Chart 11438, USGS Quadrangle Map: Dry 872-4697, NOAA Chart 11438, USGS Quadrangle Map: Dry 872-4697, NOAA Chart 11438, USGS Quadrangle Map: Dry NOAA Chart 11438, USGS Quadrangle Map: Dry NOAA Chart 11438, USGS Quadrangle Map: Dry Chart 11438, USGS Quadrangle Map: Dry Chart 11438, USGS Quadrangle Map: Dry 11438, USGS Quadrangle Map: Dry 11438, USGS Quadrangle Map: Dry USGS Quadrangle Map: Dry USGS Quadrangle Map: Dry Quadrangle Map: Dry Quadrangle Map: Dry Map: Dry Map: Dry Dry Dry Tortugas. Reference Benchmark 872-4697 F Tidal WG was used as a starting Reference Benchmark 872-4697 F Tidal WG was used as a starting Reference Benchmark 872-4697 F Tidal WG was used as a starting Benchmark 872-4697 F Tidal WG was used as a starting Benchmark 872-4697 F Tidal WG was used as a starting 872-4697 F Tidal WG was used as a starting 872-4697 F Tidal WG was used as a starting F Tidal WG was used as a starting F Tidal WG was used as a starting Tidal WG was used as a starting Tidal WG was used as a starting WG was used as a starting WG was used as a starting was used as a starting was used as a starting used as a starting used as a starting as a starting as a starting a starting a starting starting starting point as it was set on a section of the wall that appeared less subject to as it was set on a section of the wall that appeared less subject to as it was set on a section of the wall that appeared less subject to it was set on a section of the wall that appeared less subject to it was set on a section of the wall that appeared less subject to was set on a section of the wall that appeared less subject to was set on a section of the wall that appeared less subject to set on a section of the wall that appeared less subject to set on a section of the wall that appeared less subject to on a section of the wall that appeared less subject to on a section of the wall that appeared less subject to a section of the wall that appeared less subject to a section of the wall that appeared less subject to section of the wall that appeared less subject to section of the wall that appeared less subject to of the wall that appeared less subject to of the wall that appeared less subject to the wall that appeared less subject to the wall that appeared less subject to wall that appeared less subject to wall that appeared less subject to that appeared less subject to that appeared less subject to appeared less subject to appeared less subject to less subject to less subject to subject to subject to to to settlement. By way of identification, the benchmark is a brass disc stamped By way of identification, the benchmark is a brass disc stamped By way of identification, the benchmark is a brass disc stamped way of identification, the benchmark is a brass disc stamped way of identification, the benchmark is a brass disc stamped of identification, the benchmark is a brass disc stamped of identification, the benchmark is a brass disc stamped identification, the benchmark is a brass disc stamped identification, the benchmark is a brass disc stamped the benchmark is a brass disc stamped the benchmark is a brass disc stamped benchmark is a brass disc stamped benchmark is a brass disc stamped is a brass disc stamped is a brass disc stamped a brass disc stamped a brass disc stamped brass disc stamped brass disc stamped disc stamped disc stamped stamped stamped F ELV. 4.754 above MLLW.” Benchmarks H, M and E were also observed. Benchmarks H, M and E were also observed. Horizontal control was referenced to NAD83(1990) for recovered National control was referenced to NAD83(1990) for recovered National control was referenced to NAD83(1990) for recovered National was referenced to NAD83(1990) for recovered National was referenced to NAD83(1990) for recovered National referenced to NAD83(1990) for recovered National referenced to NAD83(1990) for recovered National to NAD83(1990) for recovered National to NAD83(1990) for recovered National NAD83(1990) for recovered National NAD83(1990) for recovered National for recovered National for recovered National recovered National recovered National National National Ocean Service Station FORT PI-TZ4834. By way of identification, the station Service Station FORT PI-TZ4834. By way of identification, the station Service Station FORT PI-TZ4834. By way of identification, the station Station FORT PI-TZ4834. By way of identification, the station Station FORT PI-TZ4834. By way of identification, the station FORT PI-TZ4834. By way of identification, the station FORT PI-TZ4834. By way of identification, the station PI-TZ4834. By way of identification, the station PI-TZ4834. By way of identification, the station By way of identification, the station By way of identification, the station By way of identification, the station way of identification, the station way of identification, the station of identification, the station of identification, the station identification, the station identification, the station the station the station station station consists of a brass disc stamped “FORT 1991” set atop a rampart FORT 1991” set atop a rampart set atop a rampart The Survey was conducted based on the Florida State Plane Coordinate Survey was conducted based on the Florida State Plane Coordinate Survey was conducted based on the Florida State Plane Coordinate was conducted based on the Florida State Plane Coordinate was conducted based on the Florida State Plane Coordinate conducted based on the Florida State Plane Coordinate conducted based on the Florida State Plane Coordinate based on the Florida State Plane Coordinate based on the Florida State Plane Coordinate on the Florida State Plane Coordinate on the Florida State Plane Coordinate the Florida State Plane Coordinate the Florida State Plane Coordinate Florida State Plane Coordinate Florida State Plane Coordinate State Plane Coordinate State Plane Coordinate Plane Coordinate Plane Coordinate Coordinate Coordinate System, East Zone with a project scale factor of 1.00038520. See the National Park Service Service Monument Records for more information the National Park Service Service Monument Records for more information the National Park Service Service Monument Records for more information National Park Service Service Monument Records for more information National Park Service Service Monument Records for more information Park Service Service Monument Records for more information Park Service Service Monument Records for more information Service Service Monument Records for more information Service Service Monument Records for more information Service Monument Records for more information Service Monument Records for more information Monument Records for more information Monument Records for more information Records for more information Records for more information for more information for more information more information more information information information regarding the survey control benchmarks, TIDAL DATUMS Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in US of tidal datums referred to Mean Lower Low Water (MLLW), in US of tidal datums referred to Mean Lower Low Water (MLLW), in US tidal datums referred to Mean Lower Low Water (MLLW), in US tidal datums referred to Mean Lower Low Water (MLLW), in US datums referred to Mean Lower Low Water (MLLW), in US datums referred to Mean Lower Low Water (MLLW), in US referred to Mean Lower Low Water (MLLW), in US referred to Mean Lower Low Water (MLLW), in US to Mean Lower Low Water (MLLW), in US to Mean Lower Low Water (MLLW), in US Mean Lower Low Water (MLLW), in US Mean Lower Low Water (MLLW), in US Lower Low Water (MLLW), in US Lower Low Water (MLLW), in US Low Water (MLLW), in US Low Water (MLLW), in US Water (MLLW), in US Water (MLLW), in US (MLLW), in US (MLLW), in US in US in US US US survey feet.:

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FORT JEFFERSON

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COUNTERSCARP REPAIRS SURVEY

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ST. PETERSBURG

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TAMPA

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FLORIDA TURNPIKE

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FT. LAUDERDALE

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MIAMI

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KEY WEST

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DRY TORTUGAS NATIONAL PARK

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GULF OF MEXICO

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SCALE OF MILES

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LOCATION_MAP

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DRY_TORTUGAS

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SYMBOLS

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NOTES

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ABBREVIATIONS

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SITE PLAN - FORT JEFFERSON

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COUNTERSCARP

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MOAT

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NORTH COAL DOCK RUINS

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ENTRANCE BRIDGE

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COAL DOCK RUINS

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MAIN DOCK

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ATLANTIC OCEAN

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ATLANTIC OCEAN

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ATLANTIC OCEAN

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EXTERIOR WALL

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MATCH LINE SHEET 2

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MATCH LINE SHEET 3

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SCALE OF FEET

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SCALE

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POWER POLE

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SIGN

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FIRE HYDRANT

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WATER VALVE

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CONTROL POINT

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GUY ANCHOR

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SEWER VALVE

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MANHOLE SEWER

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BOLLARD

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PALM TREE

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ELECTRIC PULL BOX

AutoCAD SHX Text APPROX. = APPROXIMATE = APPROXIMATE BOT = BOTTOM = BOTTOM BWF = BARBED WIRE FENCE = BARBED WIRE FENCE (C) = CALCULATED DIMENSION = CALCULATED DIMENSION CCR = CERTIFIED CORNER RECORD = CERTIFIED CORNER RECORD CLF = CHAIN LINK FENCE = CHAIN LINK FENCE CMP = CORRUGATED METAL PIPE = CORRUGATED METAL PIPE CONC = CONCRETE = CONCRETE CO. = CORNER = CORNER CR = COUNTY ROAD = COUNTY ROAD (A) = DEED DIMENSION = DEED DIMENSION DB = DEED BOOK = DEED BOOK DIA. = DIAMETER = DIAMETER ECMP = ELLIPTICAL CORRUGATED METAL PIPE = ELLIPTICAL CORRUGATED METAL PIPE EL. = ELEVATION = ELEVATION ELEC = ELECTRIC = ELECTRIC ERCP = ELLIPTICAL REINFORCED CONCRETE PIPE = ELLIPTICAL REINFORCED CONCRETE PIPE (F) = FIELD MEASURED DIMENSION = FIELD MEASURED DIMENSION FH = FIRE HYDRANT = FIRE HYDRANT INV = INVERT = INVERT IR = IRON ROD = IRON ROD L.A. = LINEAR FEET = LINEAR FEET MES = MITERED END SECTION = MITERED END SECTION MH = MANHOLE = MANHOLE OR # = NUMBER = NUMBER O.D. = OUTSIDE DIAMETER = OUTSIDE DIAMETER OHW = OVERHEAD WIRE(S) = OVERHEAD WIRE(S) O.R. = OFFICIAL RECORD BOOK = OFFICIAL RECORD BOOK (P) = PLAT DIMENSION = PLAT DIMENSION P.B. = PLAT BOOK = PLAT BOOK INV. = PAGE = PAGE PLS = PROFESSIONAL LAND SURVEYOR = PROFESSIONAL LAND SURVEYOR P.O.B. = POINT OF BEGINNING = POINT OF BEGINNING P.O.C. = POINT OF COMMENCEMENT = POINT OF COMMENCEMENT PROJ. = PROJECT = PROJECT PT. = POINT = POINT PVC = POLYVINYL CHLORIDE = POLYVINYL CHLORIDE PVT = PAVEMENT = PAVEMENT RCP = REINFORCED CONCRETE PIPE = REINFORCED CONCRETE PIPE REF. = REFERENCE = REFERENCE REV. = REVISION = REVISION RGE = RANGE = RANGE RR = RAILROAD = RAILROAD R/W = RIGHT-OF-WAY = RIGHT-OF-WAY STA. = STATION = STATION TOB = TOP OF BANK = TOP OF BANK TRAV. = TRAVERSE = TRAVERSE TWP = TOWNSHIP = TOWNSHIP W/ = WITH = WITH WV = WATER VALVE= WATER VALVE

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STORM DRAINAGE

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HORIZONTAL DATUM: FLORIDA STATE PLANE, EAST ZONE, NAD 83, US SURVEY FEET

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VERTICAL DATUM: MEAN LOW LOWER WATER (MLLW), US SURVEY FEET

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FIELD WORK: RM

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DRAWN: CG

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CHECKED: DD

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CONTRACT NUMBER:

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A-E FIRM

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MIAMI, FL

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ATKINS NORTH AMERICA

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COVER SHEET

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TITLE OF SHEET

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EDGE OF VEGETATION

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CONTOUR LINE MINOR 1' INTERVAL

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CONTOUR LINE MAYOR 5' INTERVAL

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SURVEY CONTROL POINT

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P16PC00065

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MOAT

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MOAT

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MOAT

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MOAT

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MOAT

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COUNTERSCARP

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FORT JEFFERSON

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DRTO 24430

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TOPOGRAPHIC SURVEY

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DRY TORTUGAS NATIONAL PARK

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HARD SURFACE ELEVATION

FLORIDA CERTIFICATE OF AUTHORIZATION NUMBER LB24

ATKINS NORTH AMERICA, INC.

800 WATERFORD WAY

SUITE 700

MIAMI, FL

33126

(305) 592-7275

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MOAT

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NORTH COAL

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BASTION

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BASTION

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BASTION

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MOAT

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MOAT

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MOAT

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ATLANTIC OCEAN

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EDGE OF CONC

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PILINGS

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BASTION

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CONCRETE COLUMNS

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BRICK DEBRIS

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MANGROVE AND SEA GRAPE CLUSTER

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EDGE OF VEGETATION

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BRICK DEBRIS

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36" CAST IRON PIPE (NE) INV. ELEV.=-3.92

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TRAIL/PATH

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EDGE OF CONCRETE SLAB

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EDGE OF COUNTERSCARP

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EDGE OF COUNTERSCARP

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BROKEN COUNTERSCARP

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COUTERSCARP BREAK/GATE

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WALL BREACH

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WALL OBSCURED BY SAND

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DOCK RUINS

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ATLANTIC OCEAN

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AutoCAD SHX Text -3.0

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AutoCAD SHX Text -2.0

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AutoCAD SHX Text -3.0

AutoCAD SHX Text

APPROXIMATE EDGE OF WATER

AutoCAD SHX Text

APPROXIMATE EDGE OF WATER

AutoCAD SHX Text

APPROXIMATE EDGE OF WATER

AutoCAD SHX Text

APPROXIMATE EDGE OF WATER

AutoCAD SHX Text 7/25/19 08:01 GUTI2346 R23 Z:\100064838 FORT JEFFERSON COUNTERSCARP REPAIRS\DWG\7-24-19 TOPOGRAPHIC SURVEY, FORT JEFFERSON, DRY TORTUGAS NATIONAL PARK DRTO 244370 NO.364-149081.DWG

AutoCAD SHX Text

DEPARTMENT OF THE INTERIOR

AutoCAD SHX Text

REVISIONS

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BY

AutoCAD SHX Text

DATE

AutoCAD SHX Text

MATCH TO SHEET 2 OF 3

AutoCAD SHX Text

TITLE OF SHEET

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FIELD WORK: RM

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DRAWN: CG

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CHECKED: DD

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OF

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SHEET

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PKG.

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NO.

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DRAWING NO.

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CONTRACT NUMBER:

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DENVER SERVICE CENTER

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A-E FIRM

AutoCAD SHX Text

MIAMI, FL

AutoCAD SHX Text

UNITED STATES

AutoCAD SHX Text

NATIONAL PARK SERVICE

AutoCAD SHX Text 33450

AutoCAD SHX Text 33650

AutoCAD SHX Text 33850

AutoCAD SHX Text 34050

AutoCAD SHX Text 34250

AutoCAD SHX Text 34450

AutoCAD SHX Text 111950

AutoCAD SHX Text 111750

AutoCAD SHX Text 111550

AutoCAD SHX Text

HORIZONTAL DATUM: FLORIDA STATE PLANE, EAST ZONE, NAD 83, US SURVEY FEET

AutoCAD SHX Text

VERTICAL DATUM: MEAN LOW LOWER WATER (MLLW), US SURVEY FEET

AutoCAD SHX Text

TOPOGRAPHIC SURVEY

AutoCAD SHX Text

AutoCAD SHX Text

AutoCAD SHX Text

CONTOUR INTERVAL = 1'

AutoCAD SHX Text

AutoCAD SHX Text

AutoCAD SHX Text

AutoCAD SHX Text

AutoCAD SHX Text

SCALE OF FEET

AutoCAD SHX Text

P16PC00065

AutoCAD SHX Text 364/149081

ATKINS NORTH AMERICA

FLORIDA CERTIFICATE OF AUTHORIZATION NUMBER LB24

ATKINS NORTH AMERICA, INC.

800 WATERFORD WAY

SUITE 700

MIAMI, FL

33126

(305) 592-7275

AutoCAD SHX Text M

AutoCAD SHX Text M

AutoCAD SHX Text M

AutoCAD SHX Text M

AutoCAD SHX Text M

AutoCAD SHX Text M

AutoCAD SHX Text M

AutoCAD SHX Text P

AutoCAD SHX Text

SB

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COAL DOCK RUINS

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MAIN DOCK

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BASTION

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BASTION

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ENTRANCE

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BRIDGE

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MOAT

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MOAT

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ATLANTIC OCEAN

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ATLANTIC OCEAN

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PB

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CONC.

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CONC.

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CONC.

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SWITCH BOX

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GRASS/

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SAND

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SB

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ATLANTIC OCEAN

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COCONUT PALM

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WIRING PULL BOX

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FUEL BOX

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PVC PIPE

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ELECTRIC CONDUIT

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1" PVC PIPE

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PULL BOX

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36" CAST IRON PIPE (SE) INV. ELEV.=-2.34

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36" CAST IRON PIPE (SE) INV. ELEV.=-2.27

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4" CAST IRON PIPE (SE) INV. ELEV.=3.46

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PORTA POTTY DECK AND RAMP

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FUEL MANHOLES

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FUEL BOX

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STORAGE SHED

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TRAIL/PATH

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2.5" VERTICAL PIPES-5 COUNT

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6"COCONUT PALM

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6"COCONUT PALM

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6"COCONUT PALM

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GRASS/BROKEN WALL

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CONC.

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WOOD FRAME ONE STORY BUILDING

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CAMPING AREA AND AND MAIN BEACH

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DOCKS

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PILINGS

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BROKEN BRICK

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TRAIL/PATH

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WOOD DOCK

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CONCRETE COLUMNS

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EDGE OF CONC

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EDGE OF BROKEN CONCRETE WALL

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VALVE BOX

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APPROXIMATE EDGE OF WATER

AutoCAD SHX Text

APPROXIMATE EDGE OF WATER

AutoCAD SHX Text

APPROXIMATE EDGE OF WATER

AutoCAD SHX Text

APPROXIMATE EDGE OF WATER

AutoCAD SHX Text -4.0

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AutoCAD SHX Text -30.0

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AutoCAD SHX Text 4.0

AutoCAD SHX Text 5.0

AutoCAD SHX Text

MATCH TO SHEET 2 OF 3

AutoCAD SHX Text

DEPARTMENT OF THE INTERIOR

AutoCAD SHX Text

REVISIONS

AutoCAD SHX Text

BY

AutoCAD SHX Text

DATE

AutoCAD SHX Text

TITLE OF SHEET

AutoCAD SHX Text

OF

AutoCAD SHX Text

SHEET

AutoCAD SHX Text

PKG.

AutoCAD SHX Text

NO.

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DRAWING NO.

AutoCAD SHX Text

DENVER SERVICE CENTER

AutoCAD SHX Text

UNITED STATES

AutoCAD SHX Text

NATIONAL PARK SERVICE

AutoCAD SHX Text 33450

AutoCAD SHX Text 33650

AutoCAD SHX Text 33850

AutoCAD SHX Text 34050

AutoCAD SHX Text 34250

AutoCAD SHX Text 34450

AutoCAD SHX Text 111150

AutoCAD SHX Text 110950

AutoCAD SHX Text 110750

AutoCAD SHX Text

CONTOUR INTERVAL = 1'

AutoCAD SHX Text

AutoCAD SHX Text

AutoCAD SHX Text

AutoCAD SHX Text

AutoCAD SHX Text

SCALE OF FEET

AutoCAD SHX Text 1" = 40'

AutoCAD SHX Text

HORIZONTAL DATUM: FLORIDA STATE PLANE, EAST ZONE, NAD 83, US SURVEY FEET

AutoCAD SHX Text

VERTICAL DATUM: MEAN LOW LOWER WATER (MLLW), US SURVEY FEET

AutoCAD SHX Text

FIELD WORK: RM

AutoCAD SHX Text

DRAWN: CG

AutoCAD SHX Text

CHECKED: DD

AutoCAD SHX Text

CONTRACT NUMBER:

AutoCAD SHX Text

A-E FIRM

AutoCAD SHX Text

MIAMI, FL

AutoCAD SHX Text

P16PC00065

AutoCAD SHX Text

TOPOGRAPHIC SURVEY

AutoCAD SHX Text

AutoCAD SHX Text

AutoCAD SHX Text 364/149081

ATKINS NORT AMERICA