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​Sunn​yvale/Chandworth Storm Drainage Improvement Project
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The Sunnyvale/Chandworth Storm Drainage Improvement Project, with a drainage area of 640 acres, was broken down into three smaller projects: 

Lilly Mill
Chandworth
Tattersall

These projects will reduce street and structure flooding throughout the neighborhood and address stream erosion to provide a more natural, stable stream system.

The Planning Phase for the Sunnyvale/Chandworth Storm Drainage Improvement Project started in December 2010 and was completed in January 2013. During the planning phase, public meetings were used to obtain input from property owners. Several improvement alternatives were developed and evaluated to determine the best solution. A recommended alternative was presented to the public for comment at the end of the planning phase on May 8, 2013. The planning phase of a project typically lasts 12 to 27 months.  During the course of planning and due to the large project area it was determined to phase this watershed into smaller project areas.  The active project areas are shown on the map below with subsequent future phases to be determined.


 
Map
​​Schedule
  
  
  
PlanningDecember 2010January 2013
Project Team  

 
Jackie Bray

City Project Coordinator
704-336-6770
jbray@charlottenc.gov

Amy Bice, E.I. 
Watershed Area Manager
704-432-0965
abice@charlottenc.gov
 
Matthew Gustis, P.E.
City Engineering Team Program Manager
704-336-6183
mgustis@charlottenc.gov
​Multi​media
​Docu​ments
  
  
Sunnyvale Chandworth Tattersall Map August 2013.pdfSunnyvale Chandworth Tattersall Map August 2013
Sunnyvale Chandworth Severn Map August 2013.pdfSunnyvale Chandworth Severn Map August 2013
Sunnyvale Chandworth Riverbend Glenfall Map August 2013.pdfSunnyvale Chandworth Riverbend Glenfall Map August 2013
Sunnyvale Chandworth Public Meeting Presentation.pdfSunnyvale Chandworth Public Meeting Presentation
Sunnyvale Chandworth Public Meeting Minutes August 2013.pdfSunnyvale Chandworth Public Meeting Minutes August 2013
Sunnyvale Chandworth Public Meeting Minutes November 2011.pdfSunnyvale Chandworth Public Meeting Minutes November 2011
Sunnyvale Chandworth Overall Map Phasing August 2013.pdfSunnyvale Chandworth Overall Map Phasing August 2013
Sunnyvale Chandworth Overall Map August 2013.pdfSunnyvale Chandworth Overall Map August 2013
Sunnyvale Chandworth Lilly Mill Map August 2013.pdfSunnyvale Chandworth Lilly Mill Map August 2013
Sunnyvale Chandworth Map August 2013.pdfSunnyvale Chandworth Map August 2013
Sunnyvale Chandworth Question July 2010.pdfSunnyvale Chandworth Question July 2010
Sunnyvale Chandworth August 2010 Mailer.pdfSunnyvale Chandworth August 2010 Mailer
Sunnyvale Chandworth August 2011.pdfSunnyvale Chandworth August 2011
Sunnyvale Chandworth July 2010 Mailer.pdfSunnyvale Chandworth July 2010 Mailer
Sunnyvale Chandworth June 2013 Mailer.pdfSunnyvale Chandworth June 2013 Mailer
Sunnyvale Chandworth October 2011 Mailer.pdfSunnyvale Chandworth October 2011 Mailer
Sunnyvale Chandworth December 2010 Mailer.pdfSunnyvale Chandworth December 2010 Mailer
Sunnyvale Chandworth April 2012 Mailer.pdfSunnyvale Chandworth April 2012 Mailer
Sunnyvale Chandworth May 2013 Mailer.pdfSunnyvale Chandworth May 2013 Mailer
Sunnyvale Chandworth March 2011 Mailer.pdfSunnyvale Chandworth March 2011 Mailer
Sunnyvale Chandworth March 2013 Mailer.pdfSunnyvale Chandworth March 2013 Mailer

​​​​​​​​​​​​​​​​​Project Phases  

​​Planning
Survey crews document the existing drainage system and surrounding areas. The project team uses this information, along with property owner input and requests for service, to analyze existing drainage system conditions. Staff hosts a public meeting to present the existing conditions analysis and obtain additional input from property owners. Several improvement alternatives are then developed and evaluated to determine the most economical and least impactful solution. The project team presents the recommended alternative to property owners for input at a public meeting at the end of this phase. This phase typically lasts 12 to 27 months.

Design
The project team develops detailed construction drawings for the selected alternative, addressing pipe sizes and alignments, drainage channel widths, utility relocations and easement locations. A project team member may meet with individual property owners to discuss the drainage system improvements and how construction will impact specific properties. The project team hosts a public meeting to present the preliminary design plan, which illustrates specific improvements to properties, and begin the easement acquisition process. This phase typically lasts 21 to 34 months.

​Permitting
The project team obtains required Federal and State water quality permits and other necessary permits, such as permission to work within railroad and NCDOT rights-of-way, as necessary. This phase typically lasts 3 to 9 months and will overlap with the Design Phase.

Property Easement/Acquisition
Staff works with property owners to acquire ​​temporary or permanent easements. Easements provide permission for Storm Water Services to access the property, construct the recommended improvement and provide future maintenance. This phase typically lasts 9 to 12 months and will overlap with the Design Phase.

Bid
A competitive bidding process is held to select a qualified contractor to construct the project. By state law, the lowest responsible bidder is awarded the construction contract. This phase typically lasts 7 to 8 months.

Construction
Throughout construction, the project team works to minimize disruption to property owners. The Storm Water Services construction inspector serves as the main point of contact for residents. Notifications of key construction dates will be communicated to residents prior to construction.  This phase varies, depending on the specific project, but typically lasts up to two years.

Warranty
The construction contract includes a warranty guaranteeing materials and workmanship for one year from the date of completion. The construction inspector conducts 6- and 11-month inspections during the warranty period. Upon notification, the contractor must repair defective items at no additional cost.