Okaloosa County BOCC — December 18, 2012 — reading text

The amount of fertilizer added to 4- inch planting units shall depend on the plant species and manufacturer’s recommendations. The contractor shall place a minimum of one-half cup of the hydrated gel/fertilizer mixture at the bottom of the hole beneath the root zone of each planting unit during installation. The plants shall be installed such that the root ball is in contact with the hydrated gel/fertilizer mixture. Dipping the rootball in the hydrating gel/fertilizer mixture prior to installation will not be permitted. The fertilizer shall conform to the applicable State of Florida fertilizer laws. Fertilizer requirements may vary for the different plant species. The contractor shall place fertilizer in accordance with standard industry practice for each varying species and size of plant, subject to the approval of the Owner & Engineer. The contractor’s work plan shall detail the brand name and manufacturer of the proposed hydrating gel and fertilizer and proposed ratios for both 2-inch and 4-inch planting units. The contractor shall include the cost of the hydrating gel and fertilizer within the installed planting unit bid price. B. Initial & Maintenance Irrigation The contractor will be allowed to “water in” (initially irrigate) and maintenance-irrigate all newly installed planting units such that the root zone of all newly installed planting units is thoroughly saturated. The irrigation must be performed in accordance with a contractor-prepared and engineer-approved irrigation schedule within the submitted water plan. The watering plan shall detail the proposed number of irrigation events, irrigation methodology, the equipment, water source, labor, required time, notifications, and they physical condition(s) of the planting units, which signal the need for maintenance irrigation. The contractor shall notify the engineer at least 72 hours prior to the application of initial or maintenance irrigation. The contractor shall apply irrigation to the planting areas utilizing a non-destructive, non-scouring methodology. The contractor will be responsible for all aspects of the irrigation, including but not limited to, compliance with all environment permits, local beach access regulations, and any damages arising from initial or maintenance irrigation. The cost of the initial and/or maintenance irrigation shall be included within the installed planting unit bid price. C. Irrigation Water The contractor will be responsible for obtaining and applying all irrigation water required. All water shall be fresh and free from injurious amount of oil, acid, alkali salts or other materials harmful to the growth of the plants. Last Revised – 01/09/2013 Page 47 Packet Pg. 397  8.5.a.a The contractor shall comply with all applicable permits and ordinances. No temporary or pipe irrigation systems will be allowed. The contractor will be responsible for coordinating with local agencies if the use of local hydrants is proposed. Attachment: Request for Bids (1264 : Approval of Bid - Dune Planting Projects (Okaloosa Island & Western Destin)) D. Maintenance Fertilization – The contractor, if approved by the engineer, may undertake maintenance fertilizer during the warranty period at their discretion. The contractor shall notify the engineer at least 72 hours prior to the application of maintenance fertilizer. The contractor shall not apply maintenance fertilization within 60 days of end of the 180-day warranty period. The contractor shall include the cost of any maintenance fertilization in the unit cost schedule that accompanies the contractor’s bid documents. The contractor shall undertake maintenance fertilization, if employed, in a manner that complies with all environmental permits applicable to the project site. E. Vehicle Access – In developing irrigation plans, the contractor is advised that vehicle access to the beach and in the dune area is restricted and/or prohibited as outlined in Section 2.2.C and Section 7.6. 3.6 SUCCESS CRITERIA & REPLANTING A. Planting Unit Success Criteria The Engineer will assess the success of the planting effort approximately 180 days after completion of the planting unit installation (for the entire project) using three criteria: whole-site survival rate, planting unit survival pattern, and planting unit roof penetration. The Engineer will consider the planting effort a success and acceptable if all three of the described criteria (Criteria 1 – 3 below) are met at the 80% level. The Engineer will assess these criteria across the approximately 1,500 to 2,000-feet acceptance sections documented in the construction drawings for the purpose of warranty and payment. B. Whole-Site Survival Rate (Criteria 1) A minimum survival rate of 80% of all planting units installed over the site as a whole shall be achieved. The Engineer will consider plants as surviving if they show clearly vigorous rhizome and white, turgid roots, even in the absence of vital above ground growth. C. Planting Unit Survival Patter (Criteria 2) A minimum of 80% of the planting width perpendicular to the shoreline shall be occupied by surviving planting units at all locations. This survival criterion is needed to minimize the risk of dune over wash during storm events. The Engineer may waive this success criterion in areas where plant survival has been adversely impacted by unexpected pedestrian traffic, erosion, overwash or inundation. D. Planting Unit Roof Penetration (Criteria 3) A minimum of 24 out of 30 (80%) randomly selected plants within each acceptance section shall have achieved root penetration of nine inches Last Revised – 01/09/2013 Page 48 Packet Pg. 398  8.5.a.a or greater, as measured from the top of the root ball down. The contractor or engineer, immediately following plant installation, shall tag the 30 randomly selected plants used to determine this measure of success. The Engineer may waive this success criterion if lesser root penetration is otherwise determined to be acceptable or if the lesser Attachment: Request for Bids (1264 : Approval of Bid - Dune Planting Projects (Okaloosa Island & Western Destin)) penetration was caused by factors outside the control of the contractor (e.g., excessive nature rainfall). E. Replanting of Units If any of the above success criteria are not met, as determined by the Engineer, the contractor shall replant the unsuccessful planting units with viable within-specification planting units of the same type originally installed. The contractor will assume sole responsibility for the replanting of planting units and will complete the replanting at no cost to the Owner. All warranty and survival provisions and requirements will apply to replanted planting units. The contractor will be responsible for properly disposing of all rejected planting units. F. Initial Planting Unit Survival The Engineer will reject and not consider eligible for payment all planting units that do not survive for a minimum of 10 days after installation. Within 5 days of notification by the Engineer that an area of initial planting units did not survive for 10 days, the contractor shall install new, within- specification planting units in areas identified by the Engineer. The contractor shall assume sole responsibility for installing the new replacement planting units at no cost to the Owner. The Engineer will consider the replacement planting units eligible for payment as “original” planting units only after they have survived a minimum of 10 days after installation. The contractor will be responsible for properly disposing of all rejected planting units. PART 4 – SAND FENCE AND POST & ROPE INSTALLATION 4.1 MATERIALS A. The construction drawings specify acceptable sand fencing, post and rope materials. 4.2 INSTALLATION A. The contractor shall install sand fence along with seaward toe of the dune (seaward planting area limit), atop the flat back bern as shown in the drawings. Prior to installation, the contractor shall demonstrate the installation technique to be applied for installing the sand fencing, maintaining proper spacing and attached the rope. The contractor, at the discretion of the Engineer, may be allowed to vary sand fence length and/or spacing requirements in transition areas (e.g., areas adjacent to dune walkovers, accesses, etc.). Following sand fencing installation, the