Okaloosa County BOCC — December 18, 2012 — Request for Bids — reading text

fencing, signage, and post and rope in accordance with the Construction Drawings. The contractor shall field-verify the specific locations of the work and obtain Engineer approval prior to installation of any work components. The Owner & Engineer reserve the right to suspend the work at any time when the location, layout, or limits established by the Last Revised – 01/09/2013 Page 41  contractor are not sufficient to define the work. The contractor shall utilize the construction baseline and stationing shown in the Construction Drawings to define features of the work and document completed. D. PLANTING LAYOUT – The contractor shall lay out the locations of the proposed vegetation areas, for approval by the Engineer, prior to planting. At a minimum, the layout shall include markers (e.g., flagging or stakes) at the seaward and landward limits of the planting area, accesses (paths and dune walkovers), and endpoints of the work. The markers shall be placed at 100-foot centers maximum and at reduced distances in non-uniform areas to clearly define the planting area. The contractor will be responsible for tracking & removing all stakes and markers from the beach project area. The work shall be performed in a continuous manner from start to finish without interruption or variation. 2.2 WORK AREAS & ACCESS A. Planting Areas – The plant units shall be installed on the constructed dune crest and seaward dune face within the planting areas shown in the drawings. The contractor shall also provide bid estimates for installing plans units on the landward dune face within the additional planting area. B. Staging Areas – The contractor shall utilize the staging areas shown in the Drawings. The contractor shall maintain the staging areas in a neat and orderly fashion and minimize the area utilized for staging and/or equipment storage. The contractor will be responsible for cleaning and restoring the staging areas to pre-construction conditions to the satisfaction of the Owner & Engineer prior to demobilization. The contractor shall be responsible for any damage to the existing dunes, dune vegetation, private and public property, and staging, work, and access areas. The contractor shall repair any damage resulting from the contractor’s operations at no cost to the Owner or Engineer. The contractor will not be permitted to stockpile equipment or materials on the beach except those required for immediate (same day planting or installation. The contractor is responsible for the collection and removal of any debris and litter associated with the work. The Work Plan submitted by the contractor shall describe the proposed use (including equipment/materials to be stored, schedule, etc.) of the staging areas. C. Beach Access – The contractor shall utilize only the beach access corridors in the drawings unless otherwise approved by the Owner & Engineer. The contractor shall maintain all beach accesses in working order and shall not inhibit the general public from accessing the beach. The contractor shall not enter or place planting units, sand fence, equipment, or materials on private properties outside of the project area defined in the drawings. The contractor shall minimize access and travel along the beach to avoid disturbance or impacts to the existing beach and dune system. Driving vehicles along any part of the dune or upland of the dune is prohibited. The contractor shall repair any damage resulting from the contractor’s operations at no cost to the Owner or Engineer. Last Revised – 01/09/2013 Page 42  D. Work Area – The contractor’s active work area shall not exceed 500 linear feet in a shore-parallel direction. PART 3 – PRODUCTS 3.1 PLANTING MATERIALS A. Plant Source – The source of all planting units delivered under this bid item will be limited to seeds and propagated plants collected from the South Alabama & Florida Panhandle coasts. Source material collected from areas other than the South Alabama and the Florida Panhandle coasts (e.g., Florida east coast or Caribbean) will be rejected. The contractor shall provide written documentation as to the source of the planting units in the bid package. Documentation shall include collection permits or contracts from the Florida Department of Environmental Protection (DFEP), the U. S. Department of Agriculture, or other comparable documents. Bids submitted without this documentation will not be considered. B. Plant Species – The contractor shall plant the native dune species listed below in accordance with the specified percentages of total plans and within the areas shown in the drawings. The contractor shall meet the specified planting percentages over the approximate 1,500 to 2,000-feet long acceptance sections documented in the construction drawings. Section 3.1.C below includes specifications for the diversity species. The contractor’s work plan shall include a detailed description of the proposed planting scheme. 1. Planting Zone I (Seaward Dune Face and Dune Crest): a. Sea Oats (Uniola paniculata) – 80% b. Panic Grass (Panicum amarum) – 10% c. Diversity Species – 10% 2. Planting Zone II (Landward Dune Face): a. Sea Oats (Uniola paniculata) – 70% b. Panic Grass (Panicum amarum) – 10% c. Diversity Species – 20% C. Diversity Species – The contractor shall provide and install a minimum of three (3) additional native species according to the percentages specified above. The contractor shall plant the diversity species intermittently amount the sea oats, in even distributions, and within the areas of greatest survival and function according to standard industry practice. The diverse species provided shall be in event proportions. Diversity species may include (but not be limited to): Beach Elder (Iva imbricate) Beach Morning Glory (lpomaea imperati) Last Revised – 01/09/2013 Page 43  Railroad Vine (lpomoea pes-caprae) Sea Purslane (Sesuvium portulacastrum) Coastal Blue Stem (Schizachyrium scoparium) Dune Sunflower (Helianthus debillis) Blanket Flower (Gaillardia pulchella) Coastal Sea Rocket (Cakile lanceolata) The contractor may recommend additional diversity species for approval by the Engineer. The contractor shall submit appropriate documentation identifying the advantages of the proposed species and certifying the proposed species are suitable for the site. 3.2 PROPAGATION METHODS A. Liners – For 2-inch species, all plant materials shall be grown in multi-well trays (liners) not to exceed a size of approximately 1.5 inches wide by 1.5 inches long and not less than 2.5 inches in depth. Root ball (container) volumes shall not be less than 5 cubic inches. For 4-inch species, all plant materials shall be grown in multi-well liners not to exceed a size of approximately 3.1 inches wide by 3.1 inches long and not less than 3 inches in depth. Root ball (container) volumes shall not be less than 26 cubic inches. B. Number of seeds per liner – The nursery shall determine, through germination experiments, the number of sees placed in each liner such that viable planting units with at least three emergent stems for 2-inch planting units and at least four emergent stems for 4-inch planting units are produced. Planting units with fewer than the specified number of stems will not be accepted. Prior to shipping, roots should fill the entire volume of the container, but the containers shall not be root bound. When the plants are pulled from the liner, the roots shall support the soil volume of the container with minimal soil loss. The Engineer may require the contractor to perform such demonstrations prior to planting. C. Micropropagation – Planting units grown from approved sources via micropropagation techniques may be accepted. Plants produced from cuttings of the division of larger plants may be used if the materials is derived from South Alabama or Florida Panhandle sources and meets all of the specifications for seed-producing planting units. However, planting units derived from micropropagation techniques shall not exceed 25% of the total number of planting units delivered. D. Inspections – The contractor shall provide the Engineer & Owner with access to all nursery operations in the manner and time frame requested by the Owner or Engineer for the purpose of performing compliance inspections of the propagation and production methods being employed by the contractor. Last Revised – 01/09/2013 Page 44 3.3 PLANT SIZE, AGE & CONDITION A. Plant Size – For 2-inch planting units, Sea Oats and Panic Grasses shall be 8 –