Striebel Pond, Part 2: A Field Perspective

摘要

This session will present a case study of a major Indiana flood control project. Discussion topics will include the various methods of erosion and sediment control applied on the project; the recurrent field changes to various practices due to schedule and/or site conditions; the challenges created for the owner, engineer and contractor when unforeseen site conditions impacted the site stormwater pollution prevention plan; a contractor's discussion of the relative ease and difficulty of the use and installation of various erosion and sediment control practices; and the contractor's challenges of coordinating the SWPPP with the construction project schedule. The project will be reviewed from the ground-breaking through completed construction of the facility.This design and construction of this challenging project for the Sanitary District of Michigan City was intended to reduce the risk of flooding and the associated financial burden of flood insurance for several hundred homes. The construction of the designed facility was awarded to Tonn and Blank Construction of Michigan City, the low bidder for the project. The Sanitary District of Michigan City teamed with Christopher B. Burke Engineering, Ltd., to provide the on-site construction observation services to administer the construction of the facility and the documentation required for this $6.25 million dollar project.The project included permanent impacts to a 0.19 km~2 (47.7 acre) tilled area, resulting in 382,280 cubic meters (0.5 million cubic yards) of excavated materials. In addition to the flood control benefits of the proposed 308,370 cubic meter (250 acre-foot) storage pool, the final product will be a showcase of water quality technologies, including:1. 2,000 m~2 (2,400 sys) of Articulated Concrete Mat2. 132 individual wetland pods3. 19,200 individual native wetland plugs4. 0.03 km2 (7.5 acres) of native sedge meadow seeding5. 0.03 km2 (7.3 acres) of native emergent wetland seeding6. 9,985 m~2 (11,940 sys) of composite turf reinforcement mat7. 448 smaller (<3.8 liter (1 gal)) native tree plantings8. 212 larger (>5.08 cm (2") caliper) native tree plantings9. 640 native shrub plantingsThe site is designed to serve as a multi-use City park. Public park amenities will include:10. More than a mile of paved 3-meter (10-ft) wide asphalt trail11. Two asphalt parking lots12. One 7.6-meter (25-ft) diameter gazebo structure13. Two 9.1 -meter (30-ft) by 11 -meter (36-ft) Chalet-style shelters14. 7.3-meter (24-ft) and 11-meter (36-ft) span arched pedestrian bridgesRepresentatives of the Contractor and Engineer will discuss the range of features noted above for the project, as well as provide an overview of the project goals, intent, roadblocks, and status.