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HomeMy WebLinkAbout2003-066 1 INDIAN RIVER COUNTY BEACH PRESERVATION PLAN ENGINEERING DESIGN & PERMITTING AMENDMENT NO. 6 TO THE PROFESSIONAL SERVICES AGREEMENT BETWEEN APPLIED TECHNOLOGY AND MANAGEMENT, INC., AND INDIAN RIVER COUNTY, FLORIDA. This is an amendment to the existing Professional Services Agreement (AGREEMENT) dated April 27 , 1999 , between Applied Technology and Management, Inc . (CONSULTANT) and Indian River County (COUNTY) . This amendment addresses changes in " Section III — Scope of Services" and " Section V — Compensation" Amendment Description This Amendment includes the following changes to " Section III — Scope of Services" : The CONSULTANT shall complete the additional scope of services items in accordance with tasks described in Exhibit "A" This Amendment includes the following changes to " Section V — Compensation" : Section V is being revised in response to Section III changes . The charges associated with the change in project scope are in accordance with Exhibit "A" . The Section of the original AGREEMENT entitled " Section V- Compensation" shall be revised to include compensation due to CONSULTANT as outlined in Exhibit "A" . This AGREEMENT is hereby amended as specifically set forth herein . All other sections of the AGREEMENT shall remain in full force and effect, and are incorporated herein . This Amendment No . 6 to the AGREEMENT regardless of where executed, shall be governed by and construed by the laws of the State of Florida. CADocuments and Settings\Administrator\Local Settings\Temp\ATM amendment 6.doc 1 In witness whereof the parties have executed this Amendment this 18th day of March 2003 , Applied Technology & Management, Inc . rd Indian River County, Florida 2770 NW 43 Street, Suite B Boar of County Commissioners Gainesville, Fl 32606 - 7419 Y By ichael Barnett, Kenneth R. Macht , Chairman Vice President Witness : A Attest : .NphlCL WITNESS : 'V1 , , w1 C � , Fad' Jeffery K. Barton, e k o Cou (Corporate seal is accep7elle in place of witnesses ) l 03 - 18 - 2003 JAMES E . CHANDLER , COUNTY ADMINISTRATOR Indian River County Approved Date Administration 0 APPROVED AS TO FORM Budget #-D � L SUF I Y Legal Risk Management FELOUNTY ATTORNEY Public Works Cd �. Coastal Eng. Cf, 3 - ra-o C :\Documents and Settings\Administrator\Local Settings\Temp\ATM amendment 6.doc 2 EXHIBIT "A " SCOPE OF SERVICES AND PROJECT COSTS . CA\Documents and Settings\Administrator\Local Settings\Temp\ATM amendment 6.doc 3 SCOPE OF WORK Indian River County Beach Preservation Project = Sectors 1 & 2 Post-Construction Services Introduction • The Indian River County Sectors 1 & 2 Beach Renourishment project is located along the shoreline south of Sebastian Inlet, at Sebastian Inlet State Park and unincorporated Ambersand Beach and extends between FDEP reference monuments R-3 . 5 and R- 17 . The borrow area for the project is located on the Indian River Shoal between 7 , 000 feet and 10 , 000 feet offshore of the southern part of Indian River County , just north and directly offshore from Round Island Park (R- 118) , in Indian River County , the Atlantic Ocean , Class III Waters . The proposed beach restoration involves transporting sand from an offshore borrow site by hopper dredge and placing the material along 2 . 5 miles of beach . The beach fill template consists of a design berm , which is intended to remain intact between nourishment events , and advance beach nourishment placed seaward of the design berm , which will erode away between nourishment events. The total construction volume is approximately 500 , 000 cubic yards over the 13 , 296 feet of beach . In addition , a minimum of 5 . 0 acres of artificial reef will be constructed as mitigation to offset the expected burial of 3 . 8 acres of nearshore hard bottom . The mitigation will consist of at minimum 0 . 2 acres of Low Complexity-Low Relief (LCLR) reef and 3 . 6 acres of High Complexity-High Relief (HCHR) reef as detailed in the " Indian River County Sectors 1 &2 Beach Restoration Project Mitigation Plan" prepared in October 2002 by Indian River County Coastal Engineering Division and Applied Technology and Management, Inc. This scope of services details the siting , design , construction and monitoring of the required mitigative reef structure . In addition , this scope of services addresses several components of the physical and biological monitoring requirements of the issued Joint Coastal Permit and U . S . Army Corps of Engineers permit for the Ambersand Project. Included are monitoring of the mitigative reef downdrift shoreline for erosion potential following reef construction , vegetation planting and monitoring plan , marine turtle monitoring (daily surveys and statistical evaluations) , marine turtle in-water abundance assessment, juvenile green sea turtle netting studies , and beach restoration project physical performance monitoring and measurement. Each of the above components are described further herein . Task 1 - Mitigation Reef Design TASK 1 . 1 : ARTIFICIAL REEF MITIGATION SITING While the general location of the Vero Cove" area offshore of South Beach Park in the City of Vero Beach has been identified as the possible/candidate site for the mitigation reef, a more detailed examination of the coastal environment must be undertaken . Applied Technology and Management , inc, will perform the necessary field CAWINDOWSITEMMmbersend Post-Construebon Services Conhact Amendment #6 - Reduced Scope 03-12-03.doc 1 investigations and analysis of the investigation results to determine the preferred location for the placement of the mitigation reef. Several transcontinental fiber optic cables are present in the Vero Cove area , originating onshore and extending across the mitigation reef site in an east-west direction . The location of the cables will be identified based on existing information , and included as part of the mitigation reef placement siting determination . Task 1 . 1 . 1 Bathymetric Survey and Set Tide Gauges for Water Surface Elevation Prior efforts for similar work indicate the necessity of establishing track line geometries in both shore-parallel and shore-normal orientations . A trackline spacing of five hundred (500) feet on-center in the shore-normal direction , and 'cross' lines at three hundred (300) feet shore-parallel is proposed . The first shore-normal trackline shall commence directly offshore from DEP monument R-86 at an approximate water depth of 12 feet (MLLW) and shall extend a maximum of 2 , 000 feet offshore . Shore-normal tracklines shall occur parallel to the R-86 trackline at 500 foot spacing along profile azimuths appropriate for the area/consistent with DEP historic data offshore of DEP reference monuments R-86 through R-95 , inclusive . Half- station transects will be established between identified reference monuments by creation of a baseline , such that R-86 . 5 through R-94 . 5 , inclusive , are the resultant transect lines. The 19 shore-normal tracklines described shall cover approximately 7 . 2 line-miles . The shore parallel tracklines shall be conducted beginning offshore of R-86 at an approximate water depth of 12 feet (MLL" . The shore parallel tracklines shall be taken every 300 feet and shall extend a maximum of 2 , 000 feet offshore . Shore-parallel tracklines shall extend alongshore to R-95 (a total shore parallel length of approximately 8, 500 feet) . The 7 shore-parallel tracklines shall cover approximately 11 . 93 line-miles . Bathymetric measurements of the offshore topography will occur simultaneously with the sub-bottom profiling (Task 1 . 1 . 2) . The deliverable for the bathymetric survey task will include reduced tide-corrected data delivered in electronic format and on a contour plot . Based on prior work experience , it will be necessary to set one tide gage to allow for accurate correction to acquired bathymetry. Florida Department of Environmental Protection Reference (R-) monuments will be checked and the monuments field-located to establish horizontal and vertical control for the tide gauge to be deployed . The tide gage shall be set offshore of monument R-90 as near as possible to mid project . The final location of the gauge will be subject to field reconnaissance , monument location , and substrate conditions . The gauge will be installed in water depths sufficient to conduct vertical leveling in coordination with a shore-based survey crew. Bar check calibrations of the survey fathometer will be performed daily throughout the field operation , and will be conducted in accordance with prescribed USACE standards for hydrographic surveying , to ensure that accurate water depth data are being acquired . For the shore normal and shore parallel trackline surveys the ATM project team will utilize ATM's 25' Parker survey boat, an Odom Hydrotrac Fathometer, and a Trimble Differential Global Positioning System (with the fathometer and DGPS interfaced to HYPACK hydrographic software) . CAWINDOWS\TEMPWnbersend Post-Construction Services Contract Amendment N6 - Reduced Scope 03-12M.doc 2 Task 1 . 1 .2 Sub-Bottom Profiling Sub-bottom profiling will be performed to assess the substrate thickness, consistency and condition . An EdgeTech , Inc. X-Star Full Spectrum Digital Sub-bottom Profiler will be utilized for data acquisition . The frequency of operation of the EdgeTech system will be in the range of 2 kHz to 16 kHz . The lower acoustic frequency range will allow penetration into the sub-bottom . Sub-bottom profiling will occur at locations equivalent to those investigated in task 1 . 1 . 1 . A trackline spacing of five hundred (500) feet on-center in the shore normal direction , and ' cross ' lines at three hundred (300) feet shore-parallel is proposed . The first shore-normal truckline shall commence directly offshore from DEP monument R-86 at an approximate water depth of 12 feet (MLLW) and shall extend 2 , 000 feet offshore . Shore-normal tracklines for sub-bottom profile data acquisition will be conducted as described in Task 1 . 1 . 1 , with the requisite 19 shore-normal tracklines allowing for 7 .2 line-miles of seismic data acquisition . The shore parallel tracklines shall be conducted beginning offshore of R-86 at an approximate water depth of 12 feet (MLLW) . The shore parallel tracklines shall be taken every 300 feet and shall extend a maximum of 2 , 000 feet offshore . Shore-parallel tracklines shall extend alongshore to R-95 (a total shore parallel length of approximately 8 , 500 feet) . The 7 shore-parallel tracklines shall cover approximately 11 . 93 line-miles . Sub-bottom profiles will be taken at the same time as the bathymetric survey, Task 1 . 1 . 3 Jet Probes to Assess Substrate Thickness As detailed in the " Indian River County Sectors 1 &2 Beach Restoration Project Mitigation Plan" (2002) candidate areas will be surveyed with towed array sub-bottom profiling equipment to evaluate sand layer thickness , consistency and condition (Task 1 . 1 . 2) . These results will require limited groundAruthing by diver-operated jet probes . Three jet probes shall be preformed along each transect line at R-86 , R-881 R-901 R-92 and R-95 (coincident with the bathymetric and sub-bottom survey areas) . The jet probes shall occur along each profile line at 500 ft offshore of the MHW line , 1 , 500 ft offshore of the MHW line, and 2 , 000 ft offshore of the MHW line , for a total of 15 jet probes . The depth of the jet probes will be in the range of 6 to 10 feet, with the intent of locating planform areas sufficient to accept mitigative reef unit placement with limited unit differential settlement (ideally, a maximum of 3 feet of sand overburden prior to encountering subsurface rock/refusal , indicating a stable platform for reef construction) . The exact spacing of the jet probes will be subject to the field reconnaissance and exact locations noted as the work is performed . Task 1 . 1 .4 Interpretation and Presentation of Bathymetric, Jet Probe and Sub= Bottom Profiling Data To assist with determining the location of existing hardbottom to be avoided for mitigative reef siting , the County-acquired 2001 aerial photographs acquired by Indian River County will be utilized . It is understood that, while the 2001 aerials are not rectified , the imagery provides sufficient resolution and reasonable confidence in the location of the exposed reef resources to allow the proper siting of mitigative reef units without C1WINDOWSITEMPWnbersend Post-ConsUmbon Services Contract Amendment #6 - Reduced Scope 03.12.03.doc 3 coverage of existing hardbottom . The intent of this effort is to eliminate the expense of towing a side-scan sonar array . ATM will make a reasonable effort to digitize and overlay the reef edges onto a coordinate system ; the County acknowledges that the accuracy of this effort may be no better than +/- 60 ft. Adequate horizontal buffers between apparent edges of exposed nearshore hardbottom and edge of proposed mitigative reef will be employed . Aerial photography, bathymetric survey data , jet probe findings , and sub-bottom profiling data will be reviewed and assembled in digital form according to depth , thickness , or isopach , of unconsolidated sandy sediment, and location of hard bottom structure . Based on the field information gathered , a planform representation of the thickness of sediment found within the mitigation site shall be produced and used to guide Task 1 . 2 for location layout , unit placement, and possible need for the use of a geotextile grid . Sub-bottom profiling data will be presented as a contour map of thickness , or isopach , of unconsolidated sediments , with elevations referenced to NGVD . A bathymetric contour plot will be generated from the acquired hydrographic survey data , with two-foot intervals represented as an overlay in AutoCAD at 1 n = 200 ' . Cruise track plots of the bathymetric tracklines will be furnished to the County in AutoCAD at 1 " = 500 ' or 1 " = 600' as appropriate to depict vessel/instrument tracklines . A brief (letter) report of field methods utilized , and dates of survey, will be transmitted along with the herein referenced digital files . TASK 1 . 2 : MITIGATION DESIGN Task 1 . 2 . 1 Preliminary Location Layout The preliminary location layout will utilize the data and information collected in Task 1 . 1 to specifically identify the placement location of the mitigation reef. This effort will include the production of a location map with the bathymetry of the selected site and adjacent areas identified , and shall include coordinate locations for the reef placement. Task 1 . 2.2 Analysis of the Possible Use of Geogrid Materials In the event that the sand thickness in the otherwise suitable area for the placement of the mitigation reef is such that excessive reef unit settling into the substrate is likely to occur and compromise the desired relief of the reef, geogrid materials will be evaluated in their use as foundation material . Task 1 . 2.3 Design and Analysis The design and analysis task will include typing and sizing of the individual units based on design water depth , design material , and spatial density of the units . A stability analysis will be performed on the mitigation reef to ensure stability of the structures as both individual units and as a whole . Construction operations including schedule , deployment procedures , lighting and flagging , delineation of transport pathways, placement timing and methods , and additional information necessary to the construction and deployment of the mitigation reef will be detailed as part of the design and analysis phase . CAWINDOWS\TEMMAmbersand Post-Construction Services Contract Amendment p6 - Reduced Scope 03-12-03.doc 4 TASK 1 .3 : CONTRACT DOCUMENT PREPARATION Task 1 . 3 . 1 Contract Drawings Planform drawings will be prepared at 1 " = 100 ' and will serve as the basis for the contract drawings in the final package sent to prospective bidders . Previously acquired aerial photographs (tentatively at this writing , the April 2002 photography conducted by the Florida Department of Environmental Protection) will serve as the base for computer- generated overlay of the final mitigation reef design . Construction drawings shall include the following features overlaid on the aerial photography images : • the design of the mitigation reef including material location , sizing , and placement clarifications ; • construction access and equipment/materials staging areas (presumably , the Port of Fort Pierce) ; • existing FDEP and intermediate survey reference monument locations and state plane coordinate values ; and , • roads and other identifiable upland features as may be appropriate. Additional sheets will include the Project Title Sheet and location bathymetry . At this time , it is anticipated that five (5) sheets will be required to depict the above information in its entirety . Submittals will be provided to the County at sixty (60) and ninety (90) percent for County review and comment. ATM shall revise submittals promptly and shall furnish a master set of 100% drawings for County approval prior to reproduction of copies suitable for distribution to prospective bidders. Task 1 .3 .2 Construction Contract Documents ATM shall prepare and transmit to the County for review and comment a sixty (60) and ninety (90) percent level set of Contract Documents . Components of the Contract Documents that are the responsibility of ATM include : Supplemental General Specifications, Technical Specifications , and Appendix Information (Permits , and Jet Probe Logs as appropriate) . ATM assumes that preparation of all remaining sections of the Contract Documents are the responsibility of the County and will be furnished to ATM by the County for ATM assembly into a comprehensive Contract Document package . The sixty (60) and ninety (90) percent submittals will be prepared and submitted to the County in three-ring binders for County review and comment. ATM shall forward the ninety (90) percent submittal of the contract documents and drawings to the Florida Department of Environmental Protection (FDEP) for review by the Bureau of Beaches and Wetland Resources staff. Following receipt of FDEP comments , ATM and County shall meet and review comments, and ATM shall revise the construction contract documents based on those comments deemed mutually acceptable to ATM and County. FDEP comments will be incorporated along with County comments to the ninety (90) percent submittal and will result in a final ( 100%) submittal . Upon notification from County that Contract Documents are complete , ATM shall prepare and furnish twenty (20) bound contract drawing and contract document sets to County for subsequent County distribution to prospective bidders , staff, FDEP , USACE and other governmental entities as County deems appropriate . CAMDOWSITEMMAmbersand Post-Constriction Services Contract Amendment 06 - Reduced Scope 03-12-03.doc 5 Task 1 . 3 .3 Pre-Bid Conference ATM shall coordinate the bid advertisement with County to determine an appropriate date for a mandatory Pre-Bid Conference . ATM shall prepare for and have one Senior Coastal Engineer attend the Conference . The ATM representative shall answer prospective Contractor inquiries at the Conference , or transcribe Contractor inquiries for subsequent research and response to all Conference attendees as appropriate . Task 1 .3 .4 Bid Addenda Indian River County staff shall assume the lead in the processing of inquiries from prospective Bidders . ATM shall only provide oversight/concurrence on bid addenda , in an effort to minimize expenses associated with possible addenda. ATM will dedicate up to eight labor hours for an AutoCAD Technician to render changes to the drawings that might be predicated by an addendum . The structuring of this contract item assumes no substantive changes to the Technical Specifications will be necessary . Task 1 . 3 .5 Review of Submitted Bids ATM shall obtain copies of sealed bids from County and shall review them for accuracy, completeness and Contractor qualifications . ATM shall evaluate and provide a written recommendation for award to the lowest responsive/responsible Bidder by County , with such recommendation based on ATM review of the submitted bids . TASK 1 .4: PHYSICAL AND BIOLOGICAL MITIGATIVE REEF MONITORING (TO BE CONDUCTED BY INDIAN RIVER COUNTYi The physical monitoring of the mitigation reef will be conducted in accordance with the October 2002 Indian River County Sectors 1 &2 Beach Restoration Project Mitigation Plan . It is anticipated that Indian River County will be responsible for the physical and biological monitoring and for the submission of all necessary reports and documentation to DEP and USACE . Task 2 - Monitoring Plan for Potential Erosion Downdrift of the Mitigation Area In accordance with Federal Permit 200001872 (IP-IS) Special Condition Number 15 , a monitoring plan for potential downdrift erosion along the shoreline within the mitigation area must be submitted to the USACE by April 30 , 2003 . This scope includes the development of the initial monitoring plan and the establishment of the initial baseline conditions as required by the USACE . It is anticipated that the County will undertake the analysis and reporting for the three (3) annual monitoring reports required by the USACE . CAWINDOWSWEMMAmbersand Post-Constniction Services Contract Amendment #6 - Reduced Scope 03-12-03.doc 6 TASK 2 . 1 : DEVELOPMENT OF MONITORING PLAN A monitoring plan for the assessment of shoreline impacts due to the placement of the mitigative reef shall include : 1 . Shoreline transect locations and extents (text and graphics) . 2 . Baseline condition information as detailed in Task 2 . 2 . 3 . Description of the method of shoreline change comparison that will be implemented in the monitoring years. 4 . Establishment of "control" shoreline transects . Profile data from the control transects will be compared to the profile data from the monitoring area transects . The control transects will lie within the R-86 to R-95 monitoring area , but will be outside of the mitigation area . The control transects will serve to establish apparent shoreline change due to storms as distinguished from shoreline change related to the mitigative reef structure . 5 . Reporting schedule including additional monitoring events (contingency efforts) as required due to storm events . For budgeting purposes , it is assumed that this Plan (text and graphics combined) will not exceed 30 pages . TASK 2,2 : ESTABLISH BASELINE CONDITIONS FOR MONITORING PLAN Task 2. 2 .1 : Baseline Condition As required by Federal Permit 200001872 (IP-IS) Special Condition Number 15 , baseline conditions shall be established within the mitigation reef site . Onshore surveys shall be analyzed within the mitigation area and within adjacent areas. Based on preliminary analysis , the monitoring area shall extend from R-86 to R-95 along the Indian River County shoreline . The DEP June 2002 shoreline data shall serve as the onshore baseline condition . The DEP June 2002 shoreline data extends offshore to a minimum depth of —24ft NGVD (Survey data verified by DEP October 2002). Comparison to historic (DEP/County) profile data will further be analyzed to determine erosion/accretion patterns and trends within the shoreline and contiguous segments to be designated as the monitoring area . Graphics and survey data shall be presented as part of the monitoring plan developed by ATM . This data shall indicate the initial pre-construction conditions and shall serve as the baseline conditions to which data from future monitoring events shall be compared (by Indian River County) . The three (3) required annual monitoring reports are to be prepared and transmitted in their entirety — including graphics - by Indian River County . Task 3 = Vegetation Planting Plan / Vegetation Monitoring Plan In accordance with Federal Permit 200001872 (IP4S) Special Condition Number 22 a vegetation planting plan / vegetation monitoring plan for dune restoration and enhancement of beach mouse habitat area must be submitted to the USACE by April 30, 2003 . CAWINDOWSI EMPIAmbersand Post-Construdon Services Cop th Amendment #6 - Reduced Scope 0312-03.doc 7 This scope includes the development of the initial vegetation planting plan and the vegetation-monitoring plan as required by the USACE . It is anticipated that the County will undertake the analysis and reporting for the annual monitoring reports required by the USACE . TASK 3 . 1 : DEVELOPMENT OF VEGETATION PLANTING PLAN The vegetation planting plan required by the USACE will provide details of the constructed dune component and the planting of the horizontal section of the constructed feature with salt-tolerant vegetation . These construction and vegetation elements will be designed for dune stabilization and as habitat for potential colonization and use by the beach mouse . A plan for the planting of the required dune vegetation will be based on the 100% construction design plans and technical specifications. The planting plan will detail the specific type and spacing of the plants and how the speck plants selected have the potential to serve as habitat for the beach mouse . Additionally included will be the planting methodology and maintenance procedures . Construction specifications and drawings will constitute the extent of this component of the plan submittal . TASK 3. 2 : DEVELOPMENT OF VEGETATION MONITORING PLAN A vegetation monitoring plan for the assessment of dune restoration and enhancement of beach mouse habitat to be implemented (following the construction contract 90-day warranty period for vegetation establishment and success) shall include : 1 . Inspection process details such as walk-through site inspection requirements , permanent photoquadrat station locations , and sea oat plant density evaluation 2 . Success criteria following the 90Aay establishment warranty period 3 . Replanting requirements Information provided in the development of the vegetation-monitoring plan will be based on the 100% construction design plans and technical specifications . Task 4 - Post-Construction Turtle Nesting Monitoring (May 1 , 2003 to October 31 , 2003) Sea turtle permit-compliance monitoring following construction of Indian River County's Beach Nourishment Project for Sectors 1 and 2 at Ambersand Beach is required by DEP Permit Number 0166929-00WC Special Condition 130) , and additionally by the Biological Monitoring Plan . Ecological Associates , Inc. (EAI ) shall perform the efforts described in this task under subcontract with ATM . The post-construction sea turtle protection program shall be implemented as noted herein : 1 ) Project Boundaries. The designed project area is approximately 2 . 5 miles in length , extending from DEP monument R-3 . 5 to R- 17 . CAWINDOWS\TEMPVImbersand Post-Constriction Services Contract Amendment #6 - Reduced Scope 08-12-i.doc 8 2) Monitoring Period. Monitoring activities will commence on May 1 , 2003 and continue through approximately October 31 , 2003 , as stipulated below. 3 ) Daily Morning Surveys. Daily early morning (shortly after sunrise) sea turtle nesting surveys will commence on May 1 , 2003 and continue uninterrupted through September 15 , 2003 . Thereafter, monitoring will be conducted several days each week until the last marked nest has hatched . Surreys will be conducted using ATVs . All emergences (turtle crawls) apparent from the previous night will be interpreted to determine which species of turtle came ashore and whether or not it nested . Crawls will be denoted as being either above or below the previous high tide line . Only those crawls above the tide line will be included in data summaries and analyses . Nests and false crawls will be recorded by pre-established survey zones . These zones will be consistent with those established in the Biological Monitoring Plan for the project . Each false crawl will be categorized as to the stage at which the nesting attempt was abandoned in conformance with Florida Fish and Wildlife Conservation Commission (FWC) requirements for beach restoration projects . Additionally, all obstacles (e .g . , scarps , seawalls , etc. ) encountered by turtles during their emergences onto the beach will be documented . The location of each nest will be recorded using a hand-held GPS unit capable of determining positions to with 10- 16 feet (3-5 meters) of the actual geographic location . This data will be incorporated into EAI 's GIS database and nest distribution maps produced for inclusion in a year-end summary report . 4) Nest Marking. At least 75 loggerhead nests will be marked for the purpose of determining nest fate and reproductive success . The clutch of each marked nest will be located and surrounded by a series of small stakes connected by brightly colored surveyor's tape . Marked nests will be monitored throughout their incubation period to determine nest fate (e . g . , hatched , washed out, depredated , vandalized , etc. ) . After an appropriate incubation period , and in accordance with FWC guidelines , nests will be excavated to determine reproductive success . Nest contents will be assigned to standard categories (e. g . , unhatched eggs, dead hatchlings , etc. ) developed by FWC . Two measures of reproductive success will then be calculated : hatching success (the percentage of eggs in the nest that hatch) and emerging success (the percentage of eggs in the nest that produce hatchlings which successfully escape from the nest) . 5) Scarp Monitoring. Once each week between May 1 and September 15 , 2003 , the beach will be monitored for the presence of escarpments (scarps) . In accordance with FWC protocol , scarps will be functionally defined as an abrupt change in beach slope (greater than 450) that is at least 18 inches in height , and persists for a distance of 100 feet or more . Each scarp observed during the survey will be assigned to one of three categories (0 to 2 feet, 2 to 4 feet, and 4 feet or higher) . Additionally , the location of both the northern and southern terminus of each scarp will be noted relative to the nearest DEP reference monument. This information will be used to calculate the percentage of the total project area affected by scarps . C MINDOMTEMPIAmbersand Post-Conshwhon Services Contrxt Amendment #6 - Reduced Scope 03-12-03.doc 9 6) Data management. All data collected during the project will be incorporated into an Access database maintained by EAI . Appropriate QA measures will be implemented to ensure that data are completely and accurately transferred from field data sheet to the electronic database . 7) Reporting. Records of daily monitoring activities , including names of monitoring personnel and times of monitoring will be maintained for the duration of monitoring . Reporting of Scams - In accordance with FWC permit requirements , EAI will report immediately to ATM and County if any scarp formations are observed , so FWC can be notified . Monthly Data Summaries - Each month , EAI will submit a summary report that will include the following information : A log of monitoring activities; Number of nests and false crawls by species and survey zone ; Number of nests marked for reproductive success ; Fate of marked nests ; and Results of scarp monitoring . Year-end Report - Within 60 days of completion of all monitoring activities , or as otherwise agreed upon , EAI will submit a final report of findings along with a brief interpretive report assessing project affects on nesting and reproductive success . A map depicting nest and scarp locations relative to DEP monuments will be appended to the report. The fate and reproductive success of all marked nests will be tabulated , and an estimate of total hatchling production for the built project will be calculated . To the extent possible , EAI will compare nesting and reproductive success data for the nourished beach with data collected by other permit holders on adjacent beaches . The year-end report will be provided to ATM and the County in both hard copy and electronic format (PDF) and will be accompanied by an electronic spreadsheet containing all raw data for transmittal to FWC . All activities described above will be performed under FWC Marine Turtle Permit TP-010 in accordance with current or future superseding conditions and guidelines issued by the permitting agency. The monitoring program described herein will comply with all conditions related to sea turtle compliance monitoring contained in the regulatory permit(s) issued for the beach nourishment project, for the 2003 marine turtle nesting season only. It is noted that the DEP permit requires monitoring for two additional years . Indian River County is developing a Habitat Conservation Plan (HCP) for sea turtles that will include much of the survey effort that is required by the beach restoration permit, and it is assumed that once the HCP is initiated , these efforts can be combined . For this reason , this scope includes only the first year of turtle nesting monitoring required by the permit. Task 5 - Nearshore Turtle Monitoring ( Fall 2003 to Spring 2006) The Biological Monitoring Plan for the Indian River County Sectors 1 &2 beach restoration project contains an element for assessing sea turtle population levels in the CAWINDOWS\TEMMmbersand Post-Construction Services Contract AmenctneM 116 - Reduced Scope 03-12-M.doc 10 nearshore area throughout the County. This assessment is to be conducted semi- annually beginning just after project construction , and continuing for three successive years thereafter. In-Water Research Group (IRG) will complete the field and statistical efforts described in this task under subcontract with ATM . The data is to be used to determine seasonal differences in sea turtle abundance in the nearshore environment, as well as differences in sea turtle abundance at differing distances offshore and at different locations within the County . To provide for sufficient data for analysis, two complete surveys, as described below, will be needed each sampling period . The complete project will require seven sampling periods , with two sampling events per period , for a total of 14 countywide sea turtle surveys . Task 5. 1 Field Surveys : Surveys will be conducted along a series of 3-kilometer long transects previously established by Indian River County. Study sites and survey methodology will be in accordance with the Indian River County Sectors 1 &2 Beach Restoration Project Biological Monitoring Plan prepared by Applied Technology and Management (ATM) and Indian River County. Task 5. 2 Data Analysis : Data will be tabulated and transmitted to ATM and Indian River County ( IRC) at the conclusion of each survey effort. At the conclusion of the study, ANOVA or other appropriate statistical treatments will be employed to statistically compare turtle abundances between seasons , sites , and distances offshore . For seasonal comparisons , data from the north , south and central survey zones will be pooled . To analyze differences between the survey zones , data from all observations will be pooled . To analyze differences in turtle abundance at different distances offshore, the sub- contractor (IRG) will pool data from all survey zones and periods . Task 5.3 Report Preparation : Annual summary reports and a final report at the conclusion of the project completely describing the methods , results and conclusions of the survey project shall be provided . Additionally, a summary report of the 2001 nearshore turtle transect work to serve as a pre-construction baseline for the proposed monitoring shall be provided . All reporting and transmittal efforts shall be conducted by IRG and Indian River County . ATM staff shall have no role in review and comment on draft reports, nor in the submittal of said documents to regulatory agencies . It is assumed that the first surveys will be conducted in the spring quarter (April-June) 2003 . Following the initial surveys, surveys will then be conducted in : Fall 2003 (August- September) , Spring 2004 (April-June) , Fall 2004 (August-September) , Spring 2005 (April-June) , Fall 2005 (August-September) , and Spring 2006 (April-June) . C1WINDOWS\TEMPIAmbersand Post-Construction services Contract AmendmeM #6 - Reduced scope 03.12-03.doc 1 1 Task 6 - Juvenile Green Turtle Netting Studies Per the February 2003 amendment to the Indian River County Sectors 1 &2 Beach Restoration Project Biological Monitoring Plan , netting studies shall be utilized to directly assess the potential effects of beach restoration activities on turtles in nearshore reef foraging habitats . Data that has been collected by turtle researchers at the University of Central Florida (UCF) shall be utilized for this purpose . UCF researchers have been conducting netting for over a decade in the nearshore directly offshore from the proposed Sector 1 and 2 project area . The extensive Catch Per Unit Effort (CPUE ) data they have collected since 1989 can serve as a baseline from which project effects can be assessed . The UCF effort, despite the valuable data collected , has never had dedicated funding . Indian River County proposes to fully fund the nearshore reef netting effort in the summer following construction (summer 2003) and in two subsequent summers and to provide funding for data analysis and report preparation on the effects of the project on foraging marine turtle CPUE . Task 7 - Physical Monitoring TASK 7. 1 : BEACH AND OFFSHORE PROFILE SURVEYS In order to evaluate the performance of the beach nourishment project and identify the erosion and accretion patterns along the project and adjacent shorelines , beach profile surveys will be conducted pre and post-construction and annually in July, August, or September for three (3) years post construction and at years 5 and 7 post-construction . Beach profile surveys will also be conducted within 90 days after major storm events as determined by the DEP . It is noted that the monitoring associated with this work authorization only covers through year 3 post-construction . Beach and offshore profile surveys will extend from each of Indian River County DEP monuments R-1 through R-22 , inclusive . All beach profiles will extend a minimum of 150 feet landward of the monument or to the edge of a building or road , whichever is encountered first. Beach profiles will extend offshore from DEP monuments to wading depth (approximately —4 feet NGVD) . The hydrographic profile lines will extend 2, 000 feet seaward of the profile origin , or to the —30400t contour, whichever is further offshore; sufficient overlap will occur between the seaward terminus of the beach profiles and the landward origination of the hydrographic profiles . Profile alignment will be conducted on N 700 E azimuths , at all profiles in order to replicate the azimuths previously established by DEP for each monument. Elevations of the beach profiles will be obtained at 10-foot intervals and at all noticeable breaks in grade (greater than 1 foot vertically) . Soundings from offshore portions of beach profiles will be obtained at 25-foot intervals. Vertical and horizontal control will be referenced to NGVD 1929 and Florida East State Plane Coordinate System (NAD 27) respectively. Survey data will be reduced and furnished in XYZ format and DEP format. Additionally , an XYZ file representing CAWINDOWSITE RAmbersand Post-Construction Services Contract Amendment #6 - Reduced Scope 03-12-03.doc 12 monument locations will be provided . All work performed shall be consistent with the FDEP Statewide Coastal Monitoring Program, Regional Data Collection and Processing Plan. Morgan & Eklund , Inc. will perform the survey data acquisition and data reduction under subcontract to ATM . TASK 7. 2: BATHYMETRIC SURVEYS OF THE BORROW AREA The offshore borrow area used for the beach nourishment project will be surveyed periodically to assess the infilling rate. Surveys will be conducted within 60 days post- construction (already contracted to Great Lakes Dredge & Dock Company) , and at year 3 post-construction . Soundings for the bathymetric survey will be taken at a minimum of 50-foot intervals with sounding lines no more than 500 feet apart . The survey will extend a minimum 500 feet beyond the limits of the borrow site on all sides of the borrow area . Bathymetric data will be collected in accordance with prescribed USACE standards for hydrographic surveying . For the three-year post-construction survey , ATM's 25 ' Parker survey boat, an Odom Hydrotrac Fathometer, and a Trimble Differential Global Positioning System will be utilized . The fathometer and DGPS will be interfaced to Coastal Oceanographics' HYPACK hydrographic software . Bar check calibrations of the survey fathometer will be performed daily throughout the field operation to ensure that accurate water depth data are being acquired . Tides will be monitored and recorded for post processing of the bathymetric data . The location of the tide monitoring station will be subject to field reconnaissance , survey bench mark locations, and proximity to the borrow site . The gauge will be installed in water depths sufficient to conduct vertical leveling in coordination with a shore-based survey crew. Vessel speed shall not exceed four knots to ensure optimal data signal acquisition . The deliverable for this bathymetric survey task will include reduced tide-corrected data delivered in electronic format and on a contour plot. A bathymetric contour plot will be generated from the acquired hydrographic survey data , with two-foot intervals represented as an overlay in AutoCAD at 1 " = 200' . A letter report of field methods utilized and dates of survey will be transmitted along with the referenced digital files . TASK 7. 3 : SEDIMENTATION MONITORING Potential changes in overall sedimentation will be quantified through the installation of non-corrosive stakes adjacent to selected hardbottom areas , followed by periodic measurement of sedimentation levels from a predetermined measuring point on the stake to the sediment surface. Stakes will be located inside the project area at DEP Reference Monuments R4 , R-89 R- 12 , and T-16 within the predicted equilibrium toe of fill . Additional stakes will be located outside of the project area at R- 22 and R-25 in similar cross-shore locations . This monitoring will allow for the assessment of changes in bottom sediment levels over time . Sedimentation levels will be measured coincident with the annual monitoring surveys for the first two years following construction . All appropriate safety measures will be undertaken to ensure the installation and placement of the stakes does not create a hazard to swimmers or surfers . CAWINDOMTEMPWnbersand Post-Construction Services Contract Amendment k6 - Reduced Scope 03-12-03.doc 13 TASK 7.4: AERIAL PHOTOGRAPHY Controlled , flight-dated , color vertical aerial photographs of the study area will be taken with the purpose of documenting consistency between surveyed profile lines and the delineation of the exposed nearshore hardbottom . U . S . Imaging , Inc. , working under subcontract with ATM , shall perform the aerial photography described herein . Aerial photography shall include the region of beach from Monuments R- 1 through R-22 , including the entirety of the Sebastian Inlet entrance channel . The photography shall be acquired with a 30 percent forward overlap , from an elevation of 3 , 000 feet ( 1 :6 , 000 negative scale) centered on the local shoreline , and at a time of MLW as close to the date of the beach profile surveys as possible . Aerial photography shall occur coincident with the post-construction monitoring survey , with the annual beach and offshore monitoring surveys for 3 years post-construction . It is noted that the year 5 and year 7 post-construction aerial photography events are not included in this authorization . The imagery of the photos will be clear and sharp in detail , of uniform density, average contrast , and free of clouds and cloud shadows , free of light streaks , smoke , static marks , fog , or other blemishes which would render the aerial photographic images unsuitable for their intended purpose . Light reflections from water areas will be kept to the minimum possible , by means of timing and the use of filters (photographs shall be taken before 2 : 00 p . m , to avoid shadows ; shall not be taken at noon to avoid glare caused by the sun ; and shall be taken as close to 10 : 00 a . m . as possible) . The photo flight will be made at low tide (MLW) and when wave heights in the mapping area are less than one foot . The color aerial photographs of the shoreline (including Sebastian Inlet) will be presented in Tagged Image Format (TIF) (uncompressed) on compact discs (CD 's) labeled with flight date , time , location , and scale . All work performed shall be consistent with the FDEP Statewide Coastal Monitoring Program, Regional Data Collection and Processing Plan, Monitoring Plan Technical Specifications. TASK 7.5: SAND SAMPLING Sand samples will be obtained by Morgan & Eklund , Inc. field crews at seven (7) cross- shore stations along three (3) beach profile lines coincident with the first and second annual post-construction monitoring surveys in accordance with the Indian River County, Florida Shore Protection Project — Sectors 1 and 2 Physical Monitoring Plan (ATM , October 2002) . The surficial sand samples will be collected at the top of dune , top of berm , MHW, MLW, -6 feet, - 12 feet, and -18 feet NGVD elevations along profile lines R- 6 , R- 13 , and R-22 . Surface beach sand samples will be taken with a hand-coring device and offshore sand samples will be collected with a petite ponar grab sampler. Each sand sample will be analyzed using standard ASTM procedures to determine grain size distribution and the calcium carbonate fraction . Mesh sieve sizes shall include ASTM #230 , 200 , 120 , 60 , 40, 251 18, 10 , 5 , and 4 . Sand samples shall be conducted coincident with the beach and offshore profile surveys at years 1 and 2 post- construction . Included with the annual monitoring report will be an analysis of the sediment characteristics including grain size distribution curves from the sample sites and the percentage of fines , shell , and carbonate content consistent with ASTM standards . CAWINDOWSITEMMAmbersand Post-COnstnicbOn Services COntW Amendment #6 - Reduced Scope 03.12-03.doc 14 TASK 7.6 : PHYSICAL MONITORING REPORT Beach and Offshore Profile Surveys : The beach and offshore profile surveys acquired in accordance with Task 7 . 1 are intended to serve as the basis of documenting volumetric and shoreline position change . Each monitoring report shall include an analysis of this nature that will be utilized for the study of the tong-term project response , and to document the toe of fill position relative to the nearshore hardbottom . Survey data will be analyzed for patterns , trends , or changes between annual surveys and for cumulative changes throughout the project construction . Specifically , each report shall include an evaluation of the erosion and accretion rates , shoreline change rates from the post-construction survey to the monitoring surveys , and an assessment of the volume of fill remaining within the project area . Additionally , the reports shall include an evaluation of the adjustment of the beach fill and volume accumulations outside of the project area and an assessment of alongshore and cross-shore fill movement . Bathymetric Surveys of the Borrow Area : The offshore borrow area surveys shall be analyzed and compared to the post-construction conditions to determine the infilling rate , if any, of the borrow area feature . Sedimentation Monitoring : The results of the sedimentation monitoring performed within the nearshore region of the project area and at the control sites shall be included within the monitoring report. Aerial Photography : The aerial photographs are to be submitted as part of the annual monitoring report with the purpose of providing the results of in-situ ground truthing surveys , summarizing the performance of the beach fill project, identifying the extent of hardbottom exposure within the project limits and along the adjacent shorelines , and identifying any adverse impacts attributable to the project. The aerial photographs will be included in the monitoring report appendices along with a comparison to historical aerials and graphical presentations of exposed hardbottom acreages. Results will be analyzed for changes from post-construction conditions and changes that have occurred between the annual surveys. Sand Samples : As a component of the sand sample analysis , the pre- and post- construction sediment properties will be analyzed for compatibility with the native material , percent carbonate portion , and conformance to the standards set forth by Rule 62B41 . 007(2) 0) F .A. C . Appendices : The report appendices shall include plots of the beach and offshore profiles and a graphical representation of volumetric and shoreline position changes throughout the monitoring area . The reduced data (in digital format) from the survey of the offshore borrow area shall be included along with a contour plot of the borrow area survey , the sand size distribution data and curves, and percent carbonate determination results . The report will summarize and discuss the data obtained , the performance of the beach fill project, and shall include a comparative review of the project performance to performance expectations and identification of adverse impacts attributable to the project. C1WINDOWSITEMPV4nbersand Post-Constriction Services Contract Amendment p6 _ Reduced Scope 03.12-03.doc 15 Digital survey data and control information will be submitted on compact disk in ASCII format labeled with the date , time , and location of the survey and as specified in the FDEP Statewide Coastal Monitoring Program, Regional Data Collection and Processing Plan, Monitoring Plan Technical Spec cations. A total of ten ( 10) hard bound copies of the monitoring report , two (2) electronic copies of the monitoring report, two (2) hard copy sets of the 9" x 9" color contact prints , and two (2) digital copies of the scanned Tagged Image Format (TIF) aerial photograph images , shall be produced . Of these , eight (8) hard copies of the monitoring report, one ( 1 ) electronic copy of the monitoring report, one ( 1 ) set of the hard copy sets of the 9" x 9" color contact prints, and one ( 1 ) digital copy of the TIF aerial photograph images shall be provided to Indian River County . Two (2) hard bound copies of the monitoring report , one ( 1 ) copy of the electronic version of the monitoring report , one ( 1 ) hard copy set of the 9" x 9" color contact prints and one (1 ) digital copy of the TIF aerial photograph images shall be provided to DEP along with two (2) bound sets of the beach profile surveys stamped by the surveyor, and one ( 1 ) electronic copy of the beach profile and borrow site survey data in the correct format . TASK 8 - JOINT COASTAL PERMIT FILE NO . 0166929 -001 ft ! C PERMIT MODIFICATION REQUEST AND PROCESSING ATM will process and transmit a minor modification request to the issued permit. This effort is assumed to be minimal on ATM 's part, and will be based on changes prepared jointly by ATM and Indian River County in November 2002 , in response to review and editing of the issued draft permit . These changes do not appear to require substantial technical review by the Department; hence , in accordance with 624 . 050(4)(s) , Florida Administrative Code , it does not appear that a fee for the modification processing will be required . Should a fee be assessed by the DEP , the County shall pay this processing fee separately from this work authorization . Fees (if assessed) are estimated at $250 . ATM will conduct telephone follow-up with the DEP Bureau of Beaches and Wetland Resources to ensure that the modification items are incorporated into a modified (issued) permit . The majority of the changes seek to clarify post-construction monitoring requirements. No graphics submittals are anticipated to be necessary to complete this Task . ATM will coordinate issuance of the revised permit and shall furnish it to Indian River County (as Owner) upon receipt. 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