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7. Land Acquisition Area =1,1 acres <br />8, Excavation Volume = 3.4 acre -feet <br />fl, Sta. 32796 to Sta. 33196 (Improved Length= 400 feet) <br />1. Channel Depth = 6 feet <br />2. Channel Bottom Width = 40 feet <br />3. Channel Side Slopes = 3H:1V <br />4. Manning N Value = 0.035 <br />5. Existing ROW Width = 76 feet <br />6. Est. Min ROW Width = 116 feet (20' Maintenance Berms) <br />7. Land Acquisition Area = 0.40 acres <br />8. Excavation Volume = 0,80 acre -feet <br />c. Mitigation Pond <br />1. Dimensions= 255'x255' (includes 30' maintenance berms) <br />ii. Excavation Volume = 6,0 acre -feet <br />ill. Pond Depth = 5 feet <br />iv. Pond Side Slopes = 4H :1V <br />v. Land Acquisition Area = 1.5 acres <br />6. Total Estimated Land Acquisition ;= 3.0 acres <br />7. Total Construction Costs = $361,000 <br />a, A104- 00 -00: Channel (Total = $113,000) <br />L Construction Costs with 25% Contingencies = $56,000 <br />ii. Land Costs = $57,000 <br />b. A104- 00 -00: Mitigation Pond (Total = $248,000) <br />L Construction Costs with 25% Contingencies = $188,000 <br />ii. Land Costs = $60,000 <br />8. Channel improvements and mitigation pond should be constructed simultaneously. <br />Scope of Work <br />This scope of work includes the following tasks: <br />Task 1— Prolect Coordination and Meetings <br />This task includes project coordination and meetings with the City of La Porte and the Harris <br />County Flood Control District regarding the project development. The Consultant will seek <br />preliminary approvals related to the proposed channel improvements and mitigation based on <br />the study technical findings and recommendations. <br />Task 2 — Data Collection and Review <br />This task includes obtaining and reviewing all pertinent drainage studies and information <br />including but not limited to hydrologic and hydraulic models, GiS mapping, CWDS reports, <br />previous drainage study reports, land use maps, right -of -way maps, record construction <br />drawings, subdivision plats, etc. A site visit will be performed to document existing drainage <br />patterns and drainage systems for the project. A photograph catalog will be developed to <br />document existing conditions. <br />Task 3 -- Hydrologic Analysis <br />The FEMA effective HEC -HMS model for Taylor Bayou watershed will be revised (pre - project <br />conditions) to update the drainage boundaries and land uses for existing watershed conditions <br />Civillech Page 2 of 3 <br />Fnglncering, Inc, <br />