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HomeMy WebLinkAbout2003 - Technical SpecificationsTECHNICAL SPECIFICATIONS for RIVERVIEW PARK EXPANSION SHORELINE RESTORATION AND STABILIZATION 1. Scope of Work. Approximately 340' of shoreline along the east parcel of the Riverview Park Expansion is to be cleaned up, restored and stabilized. The property is located at 5165 Indian River Drive and was previously known as the "Good Guys" property; it is presently known as Riverview Park Expansion. The restoration and stabilization will be accomplished with grading and the installation of filter cloth and rip -rap in accordance with the drawings. Existing concrete slabs, chunks and a rotted seawall shall be removed and disposed of.. Also, the remains of an existing dock in the area of the shoreline reconstruction shall be removed to the extent that it doesn't interfere with the shoreline project. Removal and disposal of these items shall be in accordance with all applicable local, county and state ordinances and consistent with any applicable requirements contained in the permits referenced in Item 3 below. The landward side of the shoreline project shall terminate with an 8' -wide 6" deep swale sodded with Argentine Bahia grass. 2. Drawings. Drawings for construction of the Riverview Park Expansion Shoreline Restoration and Stabilization are as follows: Sheet 1 - Overall Site Plan for Riverview Park Expansion Sheet 2 — Existing Conditions (Revised to show piers removed.) Sheet 3 - Project Boundary Sheet 4 - Project Section Views 3. Permit Requirements. SJRWNM • Consent of Use; Riverview park; DET -061-350084 (Existing) The Contractor shall be responsible for securing the required building permit from the City of Sebastian Building Department. B. Jones I Raj /DWF 21 May 2003 Page I of 5 TECHNICAL SPECIFICATIONS for RIVERVIEW PARK EXPANSION SHORELINE RESTORATION AND STABILIZATION 4. Discrepancies. Any noted discrepancies between these Technical Specifications and the Construction Drawings shall be clarified/resolved between the City Project Engineer and the Contractor prior to the start of construction. 5. General Notes. 1. The Contractor shall obtain all required building permits before commencing work. 2. The Contractor is responsible for checking actual site conditions before starting construction. 3. The Contractor shall be responsible for location of all existing utilities. The Contractor shall contact all concerned utilities at least 48 hours in advance of construction operations. 4. Any discrepancies found on the drawings shall be brought to the attention of the City Project Engineer. 5. No field changes or deviations from design shall be made without prior approval of the City Project Engineer. 6. All construction shall be completed in accordance with the applicable ordinances of the City of Sebastian, FL. 7. The Contractor shall maintain a clean workplace in the vicinity of the shoreline and shall provide suitable tape to warn against ingress to the shoreline during construction. 8. The Contractor shall remove all construction material scrap, turbidity barrier and other construction debris at the completion of construction. 9. The City Project Engineer and the Building Department shall be notified at least 48 hours in advance of any inspection. 6. Environmental Notes. Mean High Water elev. = 0.6' and Mean Low Water elev. = 0.2' per F.D.E.P. Surveying and Mapping, Tallahassee, FL (July, 1998). B. Jones /Raj /DWF 21 May 2003 Page 2 of 5 TECHNICAL SPECIFICATIONS for RIVERVIEW PARK EXPANSION SHORELINE RESTORATION AND STABILIZATION 7. Clearing and Grubbing. Clearing and grubbing shall consist of complete removal and disposal of all brush, stumps, roots, grass, weeds and all other obstructions resting on or protruding through the surface or within 3" depth of the final grade elevations (shown on Sheet 4 of the drawings) of the area to be cleared and grubbed (as shown on Sheet 3 of the drawings). All debris shall be hauled to and dumped at approved sites such as the County landfill or other sites as approved by the City of Sebastian. Side slopes and backslopes shall be protected immediately upon completion of rough grading. All earthwork shall be planned and conducted in such a manner as to minimize erosion during constriction. Silt fences and screens shall be placed wherever necessary to prevent silt from being carried off the project site. 8. Soil Erosion Control. Soil erosion control is necessary to prevent silt from being carried off-site and into the Indian River Lagoon. Silt fences and/or hay bales are to be used in accordance with the Specifications and locations indicated on the drawings. Silt Fence: The sediment barrier utilizes standard or extra strength synthetic fabrics. It is designed for situations in which only sheet or overland flows are expected. 1. The height of a silt fence shall not exceed 36". 2. The filter fabric shall be purchased in a continuous roll cut to the length of the barrier to avoid the use of joints. When joints are necessary, filter cloth shall be spliced together only at a support post, with a minimum 6" overlap, and securely sealed. 3. Posts shall be spaced a maximum of 10' apart at the barrier location and driven securely into the ground (minimum of 12"). 4. A trench shall be excavated approximately 4" wide and 4" deep along the line of posts and upslope from the barrier. The fabric shall be extended into the trench and the trench shall be backfilled and compacted over the filter fabric. B. Jones /Raj /DWF 2/ May 2003 Page 3 of 5 TECHNICAL SPECIFICATIONS for RIVERVIEW PARK EXPANSION SHORELINE RESTORATION AND STABILIZATION 9. Stabilization Material Specifications. 1. All stone shall be hard durable quality stone such that it will not disintegrate under the elements and it will not break during handling. 2. All stone shall be clean and free from earth dust or other refuse. 3. The faces of individual pieces of stone shall be roughly angular, not rounded, in shape. 4. The least dimension of each stone shall not be less that one third (1/3) of the greatest dimension of that stone. 5. Bedding stone may be crushed debris concrete if it is logistically feasible and cost effective. 6. Armor stone shall be 16 -in. to 18" -in. size coquina rock and shall have a minimum unit weight of 125 lbs./cu. Ft. 7. Bedding stone shall be 2 -in. to 6 -in. size coquina or washed angular rock. 8. The selection of bedding and armor riprap shall be reviewed with and approved by the City of Sebastian Project Engineer. 9. Filter cloth shall be non -woven fabric, AMOCO 4551, as supplied by Atlantic Construction Fabrics (or equal to be approved by the City Project Engineer). 10. Filter Cloth and Riprap Installation. 1. Filter Cloth: Filter cloth shall be placed with long dimension perpendicular to the embankment. The filter cloth strips shall be field sewn or placed to provide a minimum width of 36' of overlap for each J oint. 2. Ripra: The stones shall be placed in such a manner that they will be properly interlocked with the underlying or adjacent stones to resist displacement by wave action and form a uniform and compact section. Each stone shall be firmly set and well supported by underlying and adjacent stone. Head -sized rock and chink rock shall be placed within the interstices of armor stone; no head size or smaller stones may be free on the surface. 3. A minimum of two layers of armor stone with appropriate bedding stone and chink rock shall be installed. 10. Sodding. A stand of grass shall be established within the swale area called for in the drawings by the placing of grass sod. Sodding shall include fertilizing, watering and maintaining the sodded area until final project completion 4 B. Jones /Raj /DWF 21 May 2003 Page 4 of 5