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1612 HYDROLOGIC FEASIBILITY STUDY FOR THE NORTH MARINA AT CAMDEN WATERFRONT PARK FOR COOPER'S FERRY DEVELOPMENT ASSOCIATION BY p-cpt. of (a L S. T. HUDSON ENGINEERS, INC. 800 HUDSON SQUARE CAMDEN, NEW JERSEY U. S. DEPARTMENT OF COMMERCE NOAA COASTAL SERVICES CENTER 2234 SOUTH HO6ON AVENUE CHARLESTON SC 29405-2413 ~~~TisrprwaprprdudrcnrcwihteNwJsy I ThiRsoucs Breauort Coasta Pleannin andePrcojerct ReitthNew Jre U ~~with the financial assistance of the U. S. Department of Commerce, National Oceanic and Atmospheric Administration, Office of Ocean and Coastal Resource Management, under the provisions of the federal Coastal Zone Management Act, P.L. 92-583, as amended. I ~~~~~HYDROLOGIC FEASIBILITY STUDY FOR I ~~~~~~~THE NORTHERN MARINA INTRODUCTION I ~Following is the Phase I Hydrologic Study of a proposed two phase * ~feasibility study for a North Marina at the Extended Wiggins Waterfront Park. Given the growing demand for boating and water- front recreation, this proposed public marina, along with-planned Wiggins Park improvements, would serve to establish Camden' s I ~waterfront into an attractive center of activity. I ~As part of the Cooper's Ferry Development Association and Camden County's plan, which calls for increased public access and re- creational facilities for the waterfront, Wiggins Park is being * ~expanded north from its present Federal Street terminus to the Ben Franklin Bridge. This will occur in phases and initial interim improvements along the north shore will be connected with the southern permanent park improvements which are already complete. Thus a recreational open space park area approximately ten blocks long will be created. * ~~The following study addresses the hydrologic feasibility of a public marina which has been proposed adjacent to the park for * ~~the area north of Cooper Street to the Benjamin Franklin Bridge. The study focuses on the existing shoreline conditions, the pre- I ~~liminary design based on the master plan marina configuration, assessment of dredging requirements, and cost estimates for marina facilities. Furthermore, this study addresses the ~~~~it4-~ - -~llr ---------- Pace~~~~~~~~~~~~~~~~~_ _ _ _ _ I -1 Irsh H e~~~~~~~~~~~~~ -r - ---- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ T in'a' I~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ M~ ~ ~~~~~~~~~~~~~~~~~~~~C ark~e M~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arket ItrIC ~~~~~~~~~~~~~~~~~~~t M rket' Sr Site o 41~~~I K i Campbell SoupCapbl menP C t~~ World Headquarters 1mdn 17 ___U:~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~44ol i iKt _ _ _ _ _ _ consistency of the planned marina with the goals of NJDEP as outlined in the Rules on Coastal Resources and Development. This study does not address the economic feasibility with regard to current demand, operating costs, or projected I ~revenues. A second study will be commissioned in order to complete this task. PROJECT AREA I ~The area which is the focus of this study is at the northern edge of the Cooper's Ferry waterfront district. The Delaware River site, lying between the Benjamin Franklin Bridge and Cooper Street, is bounded on the north by Pier 7 and on the south by the RCA (now General Electric) pier. This site is * ~adjacent to the southern park area where the aquarium is located. Discussions with General Electric are presently ongoing to create a public access route between the north and south park areas. This area is within the Waterfront Development Zone on the Delaware River and will require a * ~permit from Coastal Resources. I~~PRE-APPLICATION DISCUSSIONS On August 24, 1989, a draft of this report was reviewed with U ~NJDEP Coastal Resource and Green Acres Personnel in Trenton. 3 ~The following people were in attendance: John Foley -Green Acres 3 ~~~Andrew Gale -Waterfront Development Darryl Jennus - Waterfront Development Jay Watson -Green Acres 3 ~~~Peter Teluk -Cooper's Ferry Development Association Joseph Mullin -S. T. Hudson Engineers, Inc. A number of issues were raised and questions answered. We * ~have incorporated into this final draft all the points raised at that meeting. SHORELINE INVENTORY 3 ~A diver survey of the existing shoreline has been completed and shows a variety of structures. Most are in good condition but U ~Piers 4, 5 and 6 have collapsed in some areas. Photographs of * ~each structure with the location noted on a master drawing are contained in the appendix. Most of the repairs needed on Piers 3 ~2 and 3 involve repairing cracks or spalled sections of the con- crete seawall and replacing the timber fendering system. By I ~contrast, the condition of Piers 4, 5 and 6 is very poor. 3 ~These structures are in a state of collapse and will require removal and reconstruction to provide a stable edge. Edge stabilization from Pier 4 to Pier 6 will require sheet piling 3 ~along the shoreline. Similar edge treatment will be required between Pier 6 and Pier 7. The inshore portion of Pier 7 is 3 ~a timber crib structure for about 150 feet. This section of Pier 7 will also require edge stabilization. A summary of edge conditions and recommended repairs is given below. This will serve as the basis for cost estimates to repair or replace the existing structures along the marina shoreline. I ~~~~~~~SHORELINE STRUCTURES Extent of * ~~Shoreline Repairs in Feature Condition Repairs Required Lineal Feet Pier 2 Generally Repair concrete seawalls 860 I ~~and 3 Good and fender system. Marginal Generally Repair seawalls and 375 Pier from Good fender system. Pier 3 to Pier 4 Piers 4 Poor Remove collapsed area. 600 and 5 Install sheet pile edge 3 ~~~~~~~~~or redeck. Pier 6 Poor Replace timber crib 380 3 ~~~~~~~~~~seawall. Between No edge Install sheet piling. 230 Pier 6 stabilization 3 ~and Pier 7 Pier 7 inshore 150' Install sheet piling 300 in poor con- to stabilize both dition sides. Outshore 22-5' Repair seawall and 500 fender system. I ~RIVER CHARACTERISTICS 3 ~The Delaware River is approximately 2000 feet wide at this location with the main channel very near the Philadelphia shore. The pro- 3 ~posed marina is approximately 1700 feet from the channel on the opposite shore and, therefore, well removed from large ship traffic. * ~This is an advantage in preventing any wake since there is natural attenuation of the waves generated by large ships in that 1700 foot distance. The disadvantage of this remote location from the channel is the shallow nature of the marina area. Average depth of water in this area is now 2 to 3 feet which is too shallow for a marina. I ~Dredging to a 12 foot depth will be necessary over most of the marina area. This represents approximately 120,000 cubic yards of dredging which will be required but, because siltation is a 3 ~continuing process, this estimate will require updating at time of construction. A benthic study was done in 1987 by Tom Lloyd * ~Associates and showed no endangered habitats. 3 ~With proper dredging and the broad expanse of open water at this point in the river, it will be an ideal location for the marina. * ~River traffic is concentrated on the opposite shore where the * ~water is deepest thus minimizing traffic and giving small craft several hundred feet of open water to navigate as they exit the 3 ~~marina. * ~Some protection against ice will be provided by Pier Iland Pier 7 as the ice is carried upriver and down with the ebb and flow of 3 ~the tide. An outer barrier or wave screen will also help prevent ice from entering the marina in the central portion. U~~~~~~~~~~~~~~~~~~e U~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~v: U MA g~~~~~//~~~~C U ~~~tA AA~~f P/Vt.,< (~~///7~~,$&'/ //�2 'I= IL~~~~~~~~~~~~~~~~~" o U~~~~~~~~~4V,, UU~~~~~~~~~~~ll l74AbW~reg -4L~6 -'' Av CE2 -~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~e 4 - - Ak1 I ~MARINA CONFIGURATION The marina is planned to extend from Pier 2 to Pier 7 a distance of approximately 1000 feet along the shore and about 300 feet outshore. This represents about 6.9 acres and will provide about 200 slips depending on the mix. A wave screen is planned for the I ~outer boundary to protect against wake and restrict traffic flow within and exit from the marina. A boat launch ramp and service facilities will be located near Pier 6. A fuel dock and pump * ~out station are placed at Pier 2 near the exit and entry point. This would also be a desirable location for emergency rescue I ~services and/or marine police. This sheltered area between * ~the GE pier and the south end of the marina is well positioned for quick access to the river and near the entrance to the marina where a small craft in distress would head. A marina safety plan will be developed as part of the permit process. The upriver end of,the marina is protected by Pier 7 and the * ~Benjamin Franklin Bridge pier nearest the New Jersey shore. Pier 7 extends approximately 350 feet outshore and is a low I ~deck pile supported structure for the outriver 200 feet. The * ~inner portion consists of 150 feet of crib structure and has 3 ~deteriorated on both the upriver and downriver side. FISHING PIER Pier 7 represents the upriver limit of the marina and will house a public boat ramp on its south side. This pier may be used as a fishing pier and observation pier. It can also be fitted with a floating dock where boat passengers may disembark before the boat is removed from the water at the public boat ramp. It is * ~anticipated that a standard launching fee will be assessed'and that the fee will cover the expense of security at the boat ramp. I ~The slip area between Pier 5 and Pier 6 penetrates the shore line and extends about 200 feet inshore of the bulkhead line. This area is adjacent to the proposed marina service facility and provides easy access for boats visiting the marina. A travel lift at this location would allow removal of boats at I ~this location, also, a staging area will be provided adjacent to the travel lift. Administrative offices and shore facilities could be built at this location in order to provide offices for 3 ~marina operations, a locker/shower facility, a marine supply store and a snack bar. CONSISTENCY WITH NJDEP REGULATIONS I ~Since the marina is within the Waterfront Development Zone, it is governed by the Division of Coastal Resources. Policies I ~which must be addressed in applying for permits for this water * ~dependent activity include: 1) 7:7E-3.5 Finfish Migratory Pathways 2) 7:7E-3.7 Navigation Channels 3) 7:7E-3.10 Marina Moorings 4) 7:7E-3.16 Filled Water's Edge 5) 7:7E-3.18 Natural Water's Edge Floodplains 6) 7:7E-3.38 Public Open Space 7) 7:7E-4.10 Manmade Harbors, Docks, Boat Ramps and Dredging 8) 7:7E-7.3 Resort/Recreation Use Policies 9) 7:7E-7.11 Coastal Engineering 10) 7:7E-8.11 Public Access to the Waterfront Most of these were discussed in our meeting on August 24, 1989. I ~COST ESTIMATES FOR PARK IMPROVEMENTS * ~SHORELINE STABILIZATION Shoreline stabilization includes the installation of sheet piling in collapsed areas and along the shoreline where a vertical edge does not exist. About 1600 lineal feet of edge stabilization has I ~been estimated based on the shoreline inventory of existing struc- * ~tures. The estimated cost to accomplish the edge stabilization is $3,400,000. It is possible that this could be reduced 'somewhat by judicious selection of repair treatment and location but it appears that a first class marina will require at least $3 I ~million in edge stabilization. * ~DREDGING The shallow area within the proposed marina configuration will I ~require dredging to approximately 12 ft. depth. We estimate the u ~total dredging required at about 128,000 cu. yds. of material at a cost of approximately $1,020,000 if the material does not require special handling. Dredge spoil analysis will be re- quired to ascertain the nature of the dredged material. The I ~dredged material will then be disposed of at an approved dis- posal site depending on the results of the analysis. Park Improvements Summary I ~~~a) Shoreline Stabilization .......a......... $31,400,000 b) Dredging of Shallow Area ................ $l,020,000 I ~~~~~~~~~~~~~~$4,420,000 * ~COST ESTIMATES FOR MARINA FLOATING WALKWAYS AND SLIPS 3 ~A total of 200 slips are proposed for the marina enclosed by the outriver limits of Piers I and 7. This represents about I ~7 acres and will require floating walkways and fingers to provide boat slips. We estimate the cost of floating equip- ment at $2,800,000 including the wave screen and slips. U ~BUILDINGS * ~The only building anticipated as part of the marina complex is the Marina Services Building approximately 40'xlOO' in footprint. This building will provide administrative offices, locker/shower facilities, restrooms and a snack bar. The estimated construction I ~cost is $400,000. I ~A separate restaurant to be developed by others is shown on Pier 3. The timing of the restaurant will depend on the develop- ment of adjacent properties and is not included in the marina * ~~facilities. Marina Improvements Summary I ~~~a) Floating Equipment ....... .. .. .. .. . ... ... $2,4001,000 b ) Building.................. . ... ..... .$ 400,000 3 ~~~~~~~~~~~~~~$2,800,000 These are order of magnitude cost estimates. It is possible I ~that a less sophisticated wave screen and lower cost floating equipment could be obtained. The numbers used here are for durable systems using concrete flotation to realize the lowest maintenance costs and longest life. Dredging costs must also be refined at time of construction. 3/02 ///V15 ?Z154/ 71-1 UU~~~~~~~~~~~~~~~~~~~~~ 574/// VA,2e,/ U~~~~~~~~~~~~~~~~~~~~~~~sdwz Z /- U PEMAAPI�~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~z U poflr/e/ -4zf~~- 6'ofl'cQ U rn~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~o Q14~ ~ / si~i - ~~r/~ I I I I I I I I ~~~~~~~~APPENDIX I ~~~~~~~~COST SHEETS SHORELINE INVENTORY I I I I I I I I I I I I COST SHEETS I I I I I I I I I I I S. T. HUDSON ENGINEERS, INC. PROFESSIONAL ENGINEERS & CONSULTANTS I CALCULATIONS CAMDEN, NJ DATE 'M /" /&� CONTRACT NO._______~ PROJECT -,wv PREPAREDSY�~i CHECKED BY_____ CLIENT _ PCV5 SHEET NO....I OFZ'L --~~~56 *-'EA' P/17j kZzc i'rrAr''A i,59,4W41- AV )7,59 "e, -11;n~~~~~ / i -- / 6. WA:5 AV2 r, 45eg -e7Prr 11 4 ~~-v'Q627 aAt/1i 7'o ' / '-0/>Fr, /CYb/2 AW ~ '5 ' *~~~~~~~~~1i - 0. '>/9/ "-('It~/(zJr 1714'. 5s~~~'tz ~ ~1i 2bii &iyAp 2722~ ~ Z CA FOR 2~Z 7,12,-16z5-7$ / S. T. HUDEc-ON ENGINEERS, INC. 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