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

the project area, a bulletin board will be placed and maintained in the construction area with the location map of the construction site showing the bird nesting areas and a warning, clearly visible, stating that “BIRD NESTING AREAS ARE PROTECTED BY THE FLORIDA THREATENED AND ENDANGERED SPECIES ACT AND THE STATE AND FEDERAL MIGRATORY BIRD ACTS”. 29. Beach Contours. All tilling and scarp removal should be done outside the shorebird nesting season. It is the responsibility of the contractors to avoid tilling or scarp removal in areas where nesting birds are present. a. A relatively even surface, with no deep ruts or furrows, shall be created during tilling. To do this, chain-linked fencing or other material shall be dragged over those areas as necessary after tilling. b. The slope between the mean high water line and the mean low water line must be maintained in such a manner as to approximate natural slopes. MONITORING REQUIRED: 30. Water Quality - Turbidity shall be monitored as follows: Units: Nephelometric Turbidity Units (NTUs). Dredging areas Frequency: For hopper dredge: During each hopper dredge cycle that occurs during day-light hours, after the plume reaches the monitoring sites, at least 5 discrete sampling events. Joint Coastal Permit Western Destin Beach Restoration Permit No. 0286575-001-JC Page 20 of 26 Location: If in or immediately up-current of OFW: Background: Five samples measured at least 5 meters apart (pooled to determine the mean background level for the sampling event), at mid- depth, at least 150 meters up-current from the point of excavation, clearly outside of any turbidity plume. Compliance Monitoring Sites: At the point where the densest portion of the turbidity plume intersects the periphery of the mixing zone (1,500 meters down-current from the dredge), at mid-depth. Intermediate Monitoring Sites: Additional samples will be collected within the mixing zone, in the densest portion of the turbidity plume, at distances of 150 meters, 500 meters and 1,000 meters from the dredge, at mid-depth. These measurements will be used to calibrate the size of the mixing zone for future events. If NOT in OFW: Background: Five samples measured at least 5 meters apart (pooled to determine the mean background level for the sampling event), at mid- depth, at least 150 meters up-current from the point of excavation, clearly outside of any turbidity plume. Compliance Monitoring Sites: At the point where the densest portion of the turbidity plume intersects the periphery of the mixing zone, 150 meters down-current from the dredge, at mid-depth. Disposal areas Frequency: During daylight hours, at least once during each hopper discharge cycle, when the maximum plume reaches the monitoring sites. Location: Background: Approximately 500 meters upcurrent of the point where the return water from the dredged discharge reenters the Gulf of Mexico and the same distance offshore as the associated compliance sample. Compliance Monitoring Sites: Samples shall be collected where the densest portion of the turbidity plume crosses the edge of the mixing zone, which measures 150 meters from the point where the return water from the dredged discharge reenters the Gulf of Mexico. Joint Coastal Permit Western Destin Beach Restoration Permit No. 0286575-001-JC Page 21 of 26 Turbidity Standards: Within the Gulf Islands National Seashore, which is designated as Outstanding Florida Waters (OFW), the turbidity level at the compliance site shall not exceed 0 NTUs above the background turbidity level for that sampling event. The turbidity level at compliance sites located outside of the OFW shall not exceed 29 NTUs above the background turbidity level for that sampling event. Any project-associated discharge other than dredging, disposing, or nourishing the beach (e.g., scow leakage or runoff from temporary containment area) should be monitored as close to the source as possible every hour until background turbidity levels return or until otherwise directed by the Department. The Permittee shall notify the Department by separate email or telephone to the Permit Processor, or the JCP Compliance Officer, of such an event within 24 hours of the time the Permittee first becomes aware of the discharge. 31. The compliance locations given above shall be considered the limits of the temporary mixing zone for turbidity allowed during construction. If monitoring reveals turbidity levels at the compliance sites that are greater than 0 NTUs within Outstanding Florida Waters, or 29 NTUs outside of Outstanding Florida Waters, above the corresponding background turbidity levels, or any other project-associated discharge results in a turbidity violation, construction activities shall cease immediately and not resume until corrective measures have been taken and turbidity has returned to acceptable levels. Any such occurrence shall also be immediately reported to the Department’s Bureau of Beaches and Coastal Systems (BBCS) in Tallahassee at (850) 414-7716 (attn: JCP Compliance Officer) and the Department’s Northwest District office in Pensacola. 32. Turbidity monitoring reports shall be submitted to the Department (JCP Compliance Officer) on a weekly basis within seven (7) days of collection. Reports shall be submitted under a cover letter containing the following statement: "This information is provided in partial fulfillment of the monitoring requirements in Permit No. 0286575-001-JC Western Destin Beach Restoration." The cover letter shall summarize any significant compliance issues, summarize any corrective measures taken as result of a turbidity violation and provide the dates or monitoring period of the reports. Also, please clearly reference the permit number and project name on each page of the reports. In addition to analytical results for samples and quality control, each report should also include: a. Specific monitoring requirements for the sampling location; b. Time and date samples were taken; c. Sampling results, the net difference between compliance and background results, and whether the turbidity level is in compliance (any violations of the turbidity Joint Coastal Permit Western Destin Beach Restoration Permit No. 0286575-001-JC Page 22 of 26 standard shall be highlighted). d. Depth of water body and depth of samples; e. Water temperature; f. Antecedent weather conditions, including wind direction and velocity; g. Tidal stage and direction of flow; h. A statement describing the methods used in collection, handling and analysis of the samples; i. Turbidity meter calibration/verification documentation; j. A map indicating the location of the current construction activity, the sampling locations (background and compliance), the visible plume pattern of the applicable mixing zone, and location of nearby Outstanding Florida Waters, if applicable; and k. A statement by the individual responsible for implementation of the sampling program concerning the authenticity, precision, limits of detection and accuracy of the data. PHYSICAL MONITORING REQUIRED: 33. Pursuant to Rule 62B-41.005(16), F.A.C., physical monitoring of the project is required through acquisition of project-specific data to include, at a minimum, topographic and bathymetric surveys of the beach, offshore, and borrow site areas, and engineering analysis. The monitoring data are necessary in order for both the project sponsor and the Department to regularly observe and assess, with quantitative measurements, the performance of the project, any adverse effects which have occurred, and the need for any adjustments, modifications, or mitigative response to the project. The scientific monitoring process also provides the project sponsor and the Department information necessary to plan, design, and optimize subsequent follow-up projects, potentially reducing the need for and costs of unnecessary work, as well as potentially reducing any environmental impacts that may have occurred or be expected. The attached Physical Monitoring Plan, received by the Department on October 6, 2009, is hereby approved and incorporated by reference as a specific condition of this permit. The Plan can be revised at any later time by written request of the Permittee and with the written approval of the Department. If subsequent to approval of the Monitoring Plan Joint Coastal Permit Western Destin Beach Restoration Permit No. 0286575-001-JC Page 23 of 26 there is a request for modification of the permit, the Department may require revised or additional monitoring requirements as a condition of approval of the permit modification. As guidance for obtaining Department approval of any changes to the physical monitoring plan, the revised plan shall generally contain the following items: a. Topographic and bathymetric profile surveys of the beach and offshore shall be conducted within 90 days prior to commencement of construction, and within 60 days following completion of construction of the project. Thereafter, monitoring surveys shall be conducted annually for a period of three (3) years, then biennially until the next beach nourishment event or the expiration of the project design life, whichever occurs first. The monitoring surveys shall be conducted during a spring or summer month and repeated as close as practicable during that same month of the year. If the time period between the immediate post-construction survey and the first annual monitoring survey is less than six months, then the Permittee may request a postponement of the first monitoring survey until the following spring/summer. A prior design survey of the beach and offshore may be submitted for the pre-construction survey if consistent with the other requirements of this condition. The monitoring area shall include profile surveys at each of the Department of Environmental Protection’s DNR reference monuments within the bounds of the beach fill area and along at least 5,000 feet of the adjacent shoreline on both sides of the beach fill area. For those project areas that contain erosion control structures, such as groins or breakwaters, additional profile lines shall be surveyed at a sufficient number of intermediate locations to accurately identify patterns of erosion and accretion within this subarea. All work activities and deliverables shall be conducted in