CITY OF DULUTH Stormwater Division Update

Transcription

1 CITY OF DULUTH Stormwater Division Update O C T O B E R 2 6,

2 WHAT HAVE WE BEEN DOING? Structure Inspections (all assets every 5 years) Stream Walks & Illicit Discharge Detection and Elimination (annually) Detention Pond Inspections (all ponds public & private, every 5 years) NPDES Construction Site Inspections (weekly and after rain events) Street Sweeping (semi-annually & after events) Dry Weather Screening (annually) Industrial and HVPS Inspections (annually) Water Quality Testing Bromolow Creek Watershed (annually) Update the City s Stormwater Management Plan (annually) MS4 reporting to EPD (annually)

3 WHAT DID WE ADD SINCE JANUARY? Metropolitan North GA Water Planning District accurate annual reporting Construction and Maintenance Projects (established priority system based on safety, need, value, price, etc) Educational & Public Outreach (annually) Stormwater Articles in Duluth Life Magazine (every issue) County Wide Stormwater Roundtable established by City of Duluth! (Kickoff event is Nov 5) Educational Partnership with Interns from Ga State (Latricia Johnson-Pritchett), GA Southern (Scott Blair), and Tennessee State University (Sam Braden)

4 FY 2015 Stormwater Summary Fiscal year to date, the Stormwater Division has spent: $ 7, street sweeping (events only to date) $ 1, rip-rap program (discontinued July 1 st ) $184, stormwater projects (>$7500 in value) $ 24, quick maintenance proj (<$7500) $15, will be spent in November for annual street sweeping. $13,000 will be spent to clean 400 catch basins from the inside, immediately thereafter.

5 FY 2015 Stormwater Summary Fiscal year to date, the Stormwater Division: Completed 9 projects since July 1 Has 9 projects in various states of readiness (negotiating access, cost estimates, etc) Has 13 projects in the queue after the Ready 9 List is dynamic projects being added all the time and project priorities shift as new projects come online. Prior to this year, the stormwater division typically did 3-4 projects per year.

6 How is a project added to the list? Through citizen calls/complaints & annual inspections: 1. Every call is investigated and every request or question is responded to, usually within 24 hours. 2. Inspector will follow up with engineer if technical guidance is needed, or a second opinion is wanted. 3. If there is a stormwater problem, SW staff determines whether it is private or City responsibility. 4. If City is responsible, solutions are developed in house and/or with consultants. Sometimes in consultation with contractors. 5. Options are costed and compared. 6. Project is rated and put on priority list based on its rating.

7 Project Name Project Status - Zone - Criteria # Points Description Ranking Notes Score Notes Does project address a safety issue i.e. flooding, severe ponding, sink holes, severe corrosion, other? Importance of project - i.e. not doing project will result in costly breakdown or failure of larger system or catastrophic damage to homes or businesses within the next 0-12 months 0 = no safety concerns drive this project; 30 = most severe safety concerns drive this project; sliding scale 0 = no imminent costly failure or catastrophic damage to homes or businesses if project is NOT done; 30 = imminent costly failure or catastrophic damage to homes or businesses if project is NOT done; sliding scale Cost of project (engineering & ROW, permitting & construction) 20 = less than $25k; 15 = $25k to $50k; 10 = $50k to $75k; 5 = $75k to $100k; 0 = greater than $100k # of properties this project helps 1= 1 property; 10 = 10 or more properties; sliding scale 0 = more than 5 properties ; 1 = 4 or 5 properties; 2 = 3 How many additional properties are impacted (that properties; 3 = 2 properties; 4 = 1 property; 5 = no receive no value from the project)? properties 6 0 or 5 Is project an act of good will on the City's behalf? 0 = no; 5 = yes 7 0 or 5 PROJECT PRIORITIZATION Seven Criteria: 1. Addressing safety issue? (and severity of safety issue) 2. Cost of not doing project (damage to homes/businesses) 3. Cost of Project ($) 4. Number of properties helped 5. Number of impacts to properties not helped 6. Act of good will? 7. Legacy Project? Is this a legacy project? Add 5 points per year starting in the NEXT FY after the original complaint. No retroactive points are awarded. 0 = Project is to be constructed within 12 months of the initial complaint; 5 = project was added to the program more than 12 months ago; 10 = project was added to the program more than 24 months ago; etc. No more than 50 points can be awarded to legacy projects. Project Score: 0

8 2015 Projects each with its own twist Highbrooke Trail Pipe Lining (February 2015) Brock Road Hydrovac, pipe lining & inlet stabilization. This project required an indemnification & right-of entry from NS Railroad. Lots of coordination! (March 2015) Peachtree Walk/Silver Ridge 18 pipe and headwall replacement (March 2015) Highbrooke Trail Phase II Additional rip-rap at headwall (March 2015) Peachtree Walk 60 Headwall replacement, catch basin replacement, outfall and stream stabilization, and slope stabilization (April & July 2015) Chattawood Phase II Slope repairs at headwall and outfall stabilization(may 2015) Howell Wood I 36 Pipe Replacement, sink hole repair, new headwall, and outfall stream protection(june 2015)

9 2015 Projects - continued River Summit I Replaced 96 LF of 24 pipe, Removed & replaced existing fence, replaced existing pedestal structure with flush grated inlet (June 2015) Balleycastle Removal and installation of 150 LF of 48 pipe. This project took a year to get easements and right-of-entry negotiated with the property owners! (July 2015) Howell Wood II 18 Pipe Replacement, new junction box, and tree removal from top of pipe. (September 2015) Norman Circle Design & replacement of 36 pipe and headwall under Norman Circle between detention pond and Lake Norman. Later road repairs coordinated with Public Works. (July 2015) River Shoals Replacement of 20 LF of 18 pipe, lining of 130 LF of 18 pipe, reset headwall, and improve drainage (September 2015) Scott Hudgens Park Improve drainage, add rip-rap at headwalls (October 2015)

10 Howell Wood I Project Exiting corrugated metal pipe was corroded and torn, and sink holes were forming around the pipe. Removed 205 feet of 36 corrugated metal pipe and replaced it with 36 reinforced concrete pipe. Installed 36 headwall and stabilized the outfall all the way to the creek. Landscaped all disturbed areas. Coordinated with two property owners. Ensured existing sprinkler system was in tact (prior to and after completion of work).

11 Howell Wood Pipe Before

12 Howell Wood Preparing For New Pipe Installation

13 Howell Wood Complete

14 Balleycastle Project Removed 150 feet of 48 corrugated metal pipe and replaced it with 48 strand reinforced corrugated metal pipe. Concrete pipe was too heavy, and larger equipment would have been required to bring it on site. Lighter pipe meant less property destruction. Removed and replaced 48 headwall. Removed neighbor s illegal connection from system, and ran parallel plastic pipe to the outfall. Landscaped all disturbed areas and worked with property owners to treat them each fairly. This project took over a year to obtain Right of Entry access. The steep topography and mature landscaping of the existing 10 easement between houses prevented easy access through the existing easement. Plus, it s not possible to install 48 pipe in a 10 easement. One neighbor was completely uncooperative, so we worked with the other neighbors and the contractor to establish an asymetric easement that could be worked in.

15 Balleycastle Pipe Before

16 Balleycastle Right of Entry Before

17 Balleycastle Pipe Removal

18 Balleycastle Pipe Installation

19 Balleycastle Complete

20 EDUCATIONAL OUTREACH Required as part of our permit Committed to one event per year for outreach and additional educational opportunities with outside entities such as Gwinnett Clean & Beautiful & others This year s outreach event was centered around pet waste. We had fliers developed in 3 languages and handed them out with the plastic dog poop bags at the July 3 rd event. Remaining fliers were delivered to local vets to distribute to their clients

21 QUESTIONS STORMWATER DIVI SION