glassy creek restoration project_urban restoration projects_2014 ncafpm presentation_dm

PowerPoint Presentation

Glassy Creek Restoration ProjectUrban Restoration ProjectsCity of Charlotte- Danee McGee, P.E., C.F.M.Wildlands Engineering- Aaron Earley, P.E., C.F.M.

Program Goals: Past, Present and FutureWhy did Charlotte Storm Water Services start implementing these projects in FY 2000?Clean Water Act: Physical and Biological GoalsCreate Insect HabitatCreate Fish HabitatAddress Severe Channel Erosion, Slope Failure, Undercut, &Turbidity

All Charlotte streams are designated as impaired by Clean Water Act Standards

Urban runoff is the stated cause, and conditions must improve

Existing impervious contributes to existing impairment

Program Goals: Past, Present and Future

Stopping Future Water Quality Costs and Problems by being Proactive rather than Reactive:

No Regulatory Deadline but we must have programs in place, know the costs and know what works for our region

Program Goals: Past, Present and Future

Things we have learned after 15 years of implementationThen

Habitat :Initial channel work was 2:1 with rip rap and straightened bends

Costs and Benefits:All opportunities for restoration were given consideration

Now

Habitat :Stream Stuctures and Channel Cover Providing for Aquatic Life (Insects and Fish); Meanders to adjust flow and velocity

Costs to Benefits:Long un-interrupted channels with few property owners (easements), few sewer lines, utilities and fences

Program Goals: Past, Present and FutureThe Watershed Approach?Looking at all projects in the Watershed and all costs associated with them.

How do we streamline our process?Design Build: Planning, Design and ConstructionMinimize Site Constraints: NCDOT, Contaminated Areas, Property Issues

Case Study:Glassy Creek Stream Restoration

Management TechniquesPrimavera- Schedule and Budget: Balanced Scorecard, Team Commitments

Tracking Progress with 360 Degree Reports and Monthly Status Meetings:Consultant Accountability, Scope Ammendment

IPDS:Initiation Documents,Project Plan, Change Controls

Construction Monitoring:Inspector Diaries, Monthly Meetings


Interagency CollaborationCharlotte Mecklenburg Schools: Reviews with CMS Architects and Property Managers; Time Constraints and Property Access for Construction

Mecklenburg County:Ownership and Easement Access

Charlotte Storm Water Services:Program Goals and Needs

Real Estate Special Provision for Charlotte Mecklenburg SchoolsParcel # 13.1 and 14.1, The Charlotte-Mecklenburg Board of Education_14 days notice before beginning improvements on property.Any construction of improvements at the school driveways must be performed during a scheduled school student closure for Charlotte-Mecklenburg Schools. The improvements must be completed, the school driveway open, the street must be open to vehicular traffic during the regular school calendar.From August thru May, the contractor is permitted ingress/egress on Parcels 13.1 and 14.1,occuring on weekdays prior to 8:45 a.m. and after 4:45 p.m. Additional equipment may be mobilized on weekdays between 10:00 a.m. and 3:00 p.m. as approved by School Staff and City Represenatatives. Construction will not be allowed during the two week period for spring testing. Contractors will ensure separation of the construction area from the school buildings.The Contractor will be in regular communication with the principal about any noise, safety, or disturbance issues.The Contractor will receive, acknowledge in writing, and be responsible to abide by CMS policy regarding activities of visitors on school property. ie: Registered Sex Offenders. Contractor acknowledges that CMS policy on, Registered Sex Offenders, prohibits anyone registered or required to register as a sex offender from being present on any CMS Property for any reason, whether before, during or after school hours, or on or off of CMS property. CMS Property includes all property owned or operated by the Charlotte-Mecklenburg Board of Education, including school campuses and buildings, athletic fields, playgrounds, parking lots, bus stops, vehicles, school buses, activity buses and any other properties owned or controlled by CMS.


Site OverviewSite OverviewAerial (features, roads, Irwin, FEMA)DA, %IMPBank failure (R1B) Widening (R2) Downcut (R1-3) PICS

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Site ConstraintsSite ConstraintsCMS & HillsideSewer easements and aerial crossingCulvertsDOT R/W(aerial highlighting each constraint in different color along with bullet points)


Design Challenges

Design Approachurban, flashy, hungry water (WSEL fluctuation, sediment supply bedload)Revolution Pond (design detail, rating curve, pics of weir wall, R2 vs R3 xsec)confined, steep valley (step pool channel; no meanders or riffles, PICS from Rosgen classification)

Upstream Design Bankfull Area = 29 ft2 Downstream Design Bankfull Area = 8 ft2


Design Challenges

Design Approachurban, flashy, hungry water (WSEL fluctuation, sediment supply bedload)Revolution Pond (design detail, rating curve, pics of weir wall, R2 vs R3 xsec)confined, steep valley (step pool channel; no meanders or riffles, PICS from Rosgen classification)

Rosgen A Stream TypeUrban Watershed


Construction Time

Construction Timetree save (Reach 2 multiple meetings before/during clearing with city arborist, PICS)log substitute juncus plugs, wood in channel (PICS of all three)contaminated soil (pics, 300 Tons)PICS/VIDEO of rain events (include Irwin backwater on R3)

Selective ClearingMultiple meeting with City arborist

Backwater from Irwin Creek


Construction Time

Construction Timetree save (Reach 2 multiple meetings before/during clearing with city arborist, PICS)log substitute juncus plugs, wood in channel (PICS of all three)contaminated soil (pics, 300 Tons)PICS/VIDEO of rain events (include Irwin backwater on R3)

Substituted logs for rock structuresPlanted juncus plugs with savings

Approximately 400 tonsof contaminated soil (diesel fuel spill)


Post-Construction


Design and Construction Techniques for Urban EnvironmentsLesson LearnedUrban A-channels are powerfulSelective clearing makes a big differenceAdvances in restoration science (project designed years ago)

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Mecklenburg County, NC

Figure 1. Project Location MapGlassy Creek Stream Restoration Project

SSMPCharlotte, NC

Reach 3

Reach 1B

Reach 1A

Reach 2

Barr

inge

r Dr

Clanton Park

Marie G. DavisMiddle School

Revolution ParkGolf Course

Irwin Creek

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r Dr

Barfield Dr

Griffith St

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Manchester Dr

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2009 Aerial Photography

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*2009 Aerial Photography

Clanton Park

Revolutionary ParkGolf Course

Marie G DavisMiddle SchoolBa

rrin

ger D

r

S Tr

yon

St

N I-

77 H

y

S I-7

7 Hy

Clanton Rd

Griffith St

Barringe

r Dr

South

Bv

Baltim

ore Av

Fairwood Av

May

St

Bank

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ymon

t Dr

Youngb

lood S

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Hartford Av

Foster Av

Dewi

tt Ln

Remount Rd

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ton S

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Bowman Rd

Blairhill RdDe

xter S

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Pelto

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Chicago Av

Trad

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Miller St

Stegall St

Tryclan Dr

Benjamin St

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New Bern St

Hollis RdW C

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Yorkshire Dr

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0 650 1,300325Feet

Figure 2. Watershed MapGlassy Creek Stream Restoration Project

SSMPCharlotte, NC

Legend

Reach 1A

Reach 1B

Reach 2

Reach 3

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' Stormwater System

Watershed

10' Contour