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Blenhein Storm Drainage Improvement Project
The Blenhein Storm Drainage Improvement Project (SDIP) contains two separate areas. One area is in the upper part of the watershed with most of the proposed work on Garfield Street, Morgan Street, and Sinclair Street. The second area extends from South Hoskins Street downstream to I-85 and includes Welling Avenue, Rochelle Lane, and Blenhein Road. In addition, the improvements proposed for Welling Avenue as part of the Thomasboro/Hoskins Phase III Neighborhood Improvement Project will be built along with the Blenhein SDIP improvements. This is to minimize impacts and construction related disturbances to the residents along Welling Avenue.

This project is within a drainage area of approximately 640 acres. The proposed improvements include culvert replacements, pipe system upgrades, channel improvements, raising roads, providing emergency access to Rochelle Lane and Blenhein Road, and creating safer areas to temporarily store floodwater.

- Improve safety and reduce structure and street flooding.
- Provide emergency access to Blenhein Road and Rochelle Lane.
- Address channel erosion problems within the project area.
- Replace deteriorated storm drain infrastructure.

Cost: $8,200,000 
Please note that this figure includes all costs associated with the project such as planning and design, utility relocation, consultant fees, construction, permits, real estate, and landscaping.

Blenhein project area map 

The Charlotte-Mecklenburg Storm Water Services (CMSWS) project team will manage the Blenhein Project through the phases listed below.

A general description and range of typical timeframes for project phases is given below.

Planning Phase (March 2011 - December 2011)
During the planning phase, several improvement alternatives are developed and evaluated to determine the best solution. The stormwater challenges present in this area are particularly challenging. Due to this additional complexity, CMSWS hired more than one engineering consultant to study the area. The results of these studies were presented at the May 10, 2012 public meeting.

Design Phase (December 2011- February 2015)
During the design phase, construction drawings are developed for the alternative selected during the planning phase. Many details must be addressed including the determination of channel widths, pipe sizes, utility relocations, and easement locations. The design phase of a project typically lasts 21 to 34 months as it cannot be completed till both the Permitting and Easement Acquisition Phases are complete.

Permitting Phase (March 2013 – February 2015)
During the permitting phase, the required water quality permits are obtained from Federal and State governments. The permitting phase of a project typically lasts 3 to 9 months; however, it will overlap the design and real estate phases.

Property Easement/Acquisition (May 2012 - June 2014)
The City's real estate staff works with citizens and businesses to acquire either Conservation Easements or Storm Drainage Easements. In addition, temporary construction easements may also be needed to access work areas. The City requests that easements be donated to provide access to your property to make the recommended improvements and provide future maintenance. The bid phase will begin after all easements are acquired. The easement acquisition phase of a project typically lasts 12 to 15 months.
In addition to easements, this project required the City to purchase property. This property is needed to create safer areas for the storage of floodwaters and wetlands. The City began the process of purchasing property in May 2012 and finished November 2013.
Bid Phase (March 2015 – June 2015​)
During the bid phase, the final plans will be circulated to qualified contractors for a competitive bidding process. By state law, the lowest responsible bidder is awarded the construction contract. The bid phase of a project typically lasts 5 to 6 months.

Construction Phase (Started September 2015 - End by March 2018)
Throughout construction, efforts will be made to minimize disruption to nearby property owners. Construction of proposed improvements will be supervised by City inspectors. Notifications of key construction dates will be mailed to residents prior to construction. The construction phase of this project will last for 2 years.​

Project Team:

Charlotte Drzewiecki​
City Construction Inspector
Construction Supervisor
Project Manager 

Amy Bice, E.I.
Watershed Area Manager

Matthew Gustis, P.E.
City Engineering Team Program Manager


Exhibit 1
May 10, 2012 

        Proposed Project Components (6.4 MB)
        Exhibit 1 (3 MB)
        Exhibit 2 
        Exhibit 3