Project Clover
Stream Restoration - Natural Channel Design
Project Details
Scope of Work: Develop, Implement, and Monitor 2,646 linear feet Permittee Responsible Mitigation (PRM) stream restoration at the Project Clover site.
Timeline
01/10/21 - WSSI's John Smith discussed project with Jane Doe of Jane Doe Company to establish the need for stream mitigation.
01/25/21 - WSSI sent proposal to Jane Doe of Jane Doe Company
02/27/21 - WSSI receives authorization to proceed via email (link to email)
03/10/21 - WSSI receives signed contract
Science - Delineation - John Smith and Jane Doe
03/17/21 - Attached PRM Survey Sketch - 9 Data Points and 475 Flags.
Survey - Delineation - John Smith and Jane Doe
04/10/21 - 04/15/21
Delineation report sent to DEQ for review
04/25/21 - 05/22/21
Regulatory prepares permit application for approval on mitigation request
05/23/21 - 06/10/21
Survey starts existing conditions survey and Engineers start preliminary design
07/24/21 - 12/15/21
Engineers submit Stream Restoration Plan to Agencies for review and submission
12/15/21 - 01/20/22
Plans are approved and onsite meetings with Agency, designer, and contractor to approve LOD.
02/10/22
Stream construction in progress
02/15/22 - 10/30/22
Final As-Built and plan submission for approval
11/01/22 - 11/30/22
Construction Oversight
Construction Company: Jane Doe Company
October 03, 2021 - Reach 1 (10+40 - 11+20)
Report and Imagery - Completed by John Smith
October 02, 2021 - Established Access Road + Reach 1 (10+00 - 10+40)
Report and Imagery - Completed by Jane Doe
As-Builts
Depending on contract, from client request in the proposal process, as-built surveys are scheduled to be performed at set timing intervals or at specific completion stages in the project to confirm construction requirements and standards are being met. At each stage of as-built a survey crew will survey the different components of the stream or wetlands, i.e., thalweg, cross-sections, structures, weirs, berms, etc. This data is then sent back to the CAD staff and detailed reports and overlays are complied. WSSI then supplies the plans and details to the construction oversite personnel, design engineer, contractor, and client for review. This ongoing as-built helps all the parties in many ways, from quality control, allowing the contractor to finalize sections of streams early, status updates to the client amongst many more. After the completion of the project a preliminary as-built is produced so all parties can perform a completion walk of the site before the site is planted and equipment is pulled out. After all parties are happy with the completion and quality of the project a final as-built is completed and submitted to the client and agencies called out in the contract.
Partial as-built of a Grading Plan and Profile of a stream channel. The as-built data is overlaid on the approved Design Plans to compare and contrast the constructed work vs the design plan.
Cross-section detail to compare the existing conditions to the design to the as-built data of a stream channel. Comparing the key components of a stream in cross-sectional form demonstrates the stream channel is properly constructed for low and high water events. Due to the complex dynamics of hydrology and a stream channel it is imperative a stream channel functions properly at all the flow stages.
As-Built detail of a modified cross-vane. The survey data collected on this cross-vane ensures the structure is built within the structure accuracy tolerances. Ensuring the tolerances are met is a vital role to know the structure will perform as designed during high water storm events.
