Innovative Water Processing Solutions By Water Quality Management Professionals
• Overview of WaterTectonics • Modern Challenges of Construction Stormwater Treatment in Washington State • WT Technologies & Services for Contractors • Construction Stormwater Case Studies • Q&A
• WaterTectonics has a 14-year local history working with stormwater treatment at construction sites in the Puget Sound region • We design, manufacture, install, and operate a range of simple-to-advanced stormwater treatment systems • Our in-house consultation and lab services can design for and diagnose almost any application • Our local field team provides ongoing field service support for projects year-round
CITY # PROJECTS Seattle 42 Redmond 17 Bellevue, Issaquah, Tacoma 7 each The WT team has a deep Renton 5 understanding of the challenges, regulations, Kirkland, Woodinville 3 each and options available on Bremerton, Everett, Kent 2 each Puget Sound region Anacortes, Bellingham, Black 1 each projects. Diamond, Bothell, Burien, Des Moines, Enumclaw, Gig Harbor, Kenmore, Lynnwood, Mercer Island, Monroe, Olympia, Sammamish, Skykomish, Snoqualmie Total 115
COMPLETED ACTIVE • • Microsoft West Campus The Spring District • • Amazon World Headquarters South Lake Union Block 14/19/43/44/45/52 Development • Seahawks Training Center • Spokane Convention Center • Gates Foundation Headquarters • Overlake Village • UW Medical Center Expansion • University Village QFC • Swedish Hospital • Aberdeen Walmart • Aleutian Spray Fisheries • University of Washington Terry Hall • SR 304 Tunnel Expansion WSF • 10505 Main Street • WSDOT I-5 Port of Tacoma HOV • Port of Seattle Rental Car Facility
• What is the goal? • Are permits filed? • Are stormwater plans in place? • Are BMPs in place? • Are BMPs being maintained? • Can you eliminate problem outfalls? • Can you infiltrate or reduce your discharge? • Are you monitoring your outfalls? • Are you sampling correctly? • Are you doing all of the above and still have problems?
Federal (EPA) Sets Minimum Water Quality Standards State (Washington Dept. of Ecology) Sets State-Specific Standards Enforcement & Inspections Local (City & County Authorities) Sets Project-Specific Standards Approves Stormwater Pollution Plans
• Permit required for sites > 1 acre Example of Differences in Local Requirements • Permitted sites must have SWPPP Bellevue Turbidity Monitoring Plan and meet minimum requirements for Issaquah Wet Weather Operating Plan Turbidity and pH Redmond Wet Weather Plan • Typical 60-day permit lead time after Seattle Drainage Side Sewer Permit filing Notice of Intent Application Dry Season Grading Extension • Local review process may require Tacoma Special Authorization to additional time and local regulators Discharge (SAD) may require additional treatment King County Wet Season Plan beyond state requirements Snohomish Enhanced TESC Review County
• Schedule • Phasing • Soil Type • Topography • Rainfall Sizing • Historical Use • Groundwater Intrusion • Receiving Water • Discharge Options • Etc…
TREATABILITY STUDIES SELL/RENT EQUIPMENT TURNKEY SERVICE In-house testing & analysis WaveIonics Permitting/Monitoring Lab & field-scale programs RoadSide Acist Operator Training QAPP plans pHATBox Install/Mob/Demob Services Other O&M Contracts
• Project-Specific Treatment Design o Run-off Calculations o Equipment Layout o Project Cost Analysis • Permitting o NPDES Permits & SWPPPs o Wet Weather & Monitoring Plans o Sanitary Discharge Applications • Monitoring o DMR Reporting & Compliance o Site Inspections & Sampling
PHATBOX ROADSIDE ACIST WAVEIONICS Automated pH Adjustment Chitosan Treatment System Electrocoagulation Flowrate: 50-350gpm Flowrate: 300-1,000gpm Flowrate: 50-1,000gpm Contaminants: pH Contaminants: Turbidity Contaminants: Turbidity, Heavy Metals, Oils, Organics
Chitosan Enhanced Sand Filtration Electrocoagulation (EC) (CESF) Approval Level GULD GULD Consumable Liquid Chitosan EC Cells Labor On-Site Labor When Operating Automated Operator with Alerts Contaminants Turbidity Only Turbidity, Metals, Emulsified Oils Active pH Range 7 to 8 5 to 12 Active NTU Range 0 to 600 0 to 4,000+ Rental Cost $200 to 260 / day $250 to 310 / day
Project Scope: Treatment Scope: • Located in (2) 1000gpm CESF Systems Tallahassee, Florida • $57M contract for 2.9mi of 4 new lanes • Intersection improvements • Environmental mitigation
Project Scope: • Located in Gilboa, New York Treatment Scope: • Drinking water reservoir dam (2) 400gpm WaveIonics replacement electrocoagulation systems • Stormwater, concrete batch plant, truck washout, dam wash-down, dewatering
Treatment Scope: (1) 300gpm WaveIonics electrocoagulation system Project Scope: • Located in Seattle, Washington • Redevelopment for mixed-use residential • Stormwater, dewatering w/ direct discharge to Lake Union
Project Scope: • Located in Seattle, Washington Treatment Scope: • Early action site for Lower Duwamish (1) 300-600gpm WaveIonics Superfund Cleanup electrocoagulation system • Dredge effluent return water
Project Scope: • Located in Whitefish, Montana • 750LF sheet-pile cofferdam isolation and dredging through 6- 48” of sediment and shoreline removal Treatment Scope: (1) 300gpm WaveIonics electrocoagulation system
Units Influent Effluent cPAH’s/PAH’s µg/L 3,187 < 10 Mercury µg/L 8.8 < 1 Arsenic µg/L 100 < 5 Cadmium µg/L 4.1 < 1 Chromium µg/L 200 < 1 Lead µg/L 3,300 < 1
• Learn all you can about your site and the options available to you • Think about stormwater treatment in the context of the bigger picture: capital costs, operational costs, schedule impacts, work activity impacts, violation risks, etc. • Have a plan, report on it, adapt as needed • Know that there are a wide variety of proven solutions and technologies available to meet your needs on more challenging sites
WaterTectonics 6300 Merrill Creek Parkway Suite C-100 Everett, WA 98203 www.watertectonics.com
Recommend
More recommend
