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2. The CONSULTANT will compile, review and analyze the following data for its use as it relates to stormwater model development described under Task 3. a. Topographic data (1 -foot contour) for the study area. b. Indian River County future land use data. c. Hourly rainfall and annual evaporation records for up to three gages available from the National Climatic Data Center (NCDC). d. Available hourly stream flow and stage records for the United States Geologic Survey (USGS) gage on the Sebastian River. e. Existing minimum flows and levels (MFLs) determined by St. Johns River Water Management District (SJRWMD) for the Sebastian River. f. Available existing hydrologic or hydraulic (H/H) models (e.g., ICPR, HSPF) for areas covering, adjacent to, or downstream of the SRID. g. Indian River County Flood Insurance Study (FIS) and digital flood insurance rate maps (DFIRMs). Subtask 1.2 — Field Monitoring The CONSULTANT will collect physical data for each canal (L, C, D and Bypass), as well as at the downstream location (just south of County Road 512 bridge) where all 3 canals merge. The CONSULTANT will subcontract with Carter and Associates, Inc. (CAI) who will perform the field monitoring and collection of survey data to define the geometry for each of the lateral canals (one cross-section at each of the four canals). CAI will also collect continuous stage data at each of the three outfall structures controlling flow from the lateral canals. Additionally, velocity and elevation data for Lateral D will also be measured as this is an un -controlled channel. These data will be collected over a time period of approximately 4 to 6 months (to capture dry and wet season periods). CAI will also collect rainfall data from a local rain gauge for the same time period. The CONSULTANT will perform coordination with CAI throughout the monitoring duration. The CONSULTANT will review stage, velocity, flow and rainfall data collected by CAI to confirm that it meets the thresholds of the monitoring equipment and that it does not contain anomalies that may affect its validity for subsequent use in surface water modeling (Task 3). The CONSULTANT will use the measurements (velocities, stages) collected under Subtask 1.1 to calculate flow at each of the control structures and Lateral D. Subtask 1.3 - Data Evaluation and Summary To further support the modeling effort described in Task 3, the CONSULTANT will summarize the available data provided by the OWNER, obtained from regulatory agencies, or collected in Task 1.1. The CONSULTANT will evaluate the above data and summarize potential data gaps, recommendation for data gap resolution, and the data that will be incorporated. The CONSULTANT will prepare a summary of results in a draft Report Section with supporting graphics and tables which will be provided to the OWNER for review. Any additional data collection needs will be negotiated under separate cover and are not included in this Scope of Services or corresponding budget estimate. TASK 2 - FIELD RECONNAISSANCE/RESOURCE ASSESSMENT The CONSULTANT will supply two personnel to complete a limited one -day field review of the canal system (specifically in the vicinity of the cross sections/data collection locations) to observe existing conditions. The CONSULTANT will rely on existing information (Task 1) to the extent possible, but may use additional observations made at the site to supplement information already documented. The CONSULTANT will take photographs and document the results of the field review in a draft Report Section. The OWNER will assist the CONSULTANT, if needed, with obtaining access to the site from SRID in order to conduct the field review. The CONSULTANT will also set up a teleconference with SJRWMD to s°miith A-2 jj1646_Exhibit A.docx