Location

Aiken, SC

Customer

City of Aiken

Situation

Aiken South Carolina's Sand River had experienced years of severe erosion due to increased stormwater runoff. This led to destabilized riverbanks, pollution from urban runoff, loss of habitats and recreational areas in Hitchcock Woods, and risks to public safety and infrastructure.

Results

The Opti solution led to significant improvements, including capturing 87% of annual stormwater runoff and reducing erosive peak flows by 60%, while revitalizing recreational areas and protecting critical infrastructure.

Location

Montgomery County, MD

Customer

Montgomery County

Situation

Montgomery County, Maryland was tasked with a 20% impervious area restoration goal, including EPA's Chesapeake Bay TMDL requirement to restore over 3,700 impervious acres to reduce nutrients and sediment following decades of urbanization, higher runoff volumes, outdated infrastructure, and water quality challenges.

Results

95% savings per acre restored ($22,000 vs. $200,000 per acre), 86% increase in wet weather capture, and 100% achievement of nutrient and sediment reduction goals.

Location

Tampa, FL

Customer

National Stormwater Trust & Port Tampa Bay

Situation

Port Tampa Bay needed to ensure 100% of its land was available to meet an unprecedented expansion of containerized cargo calling on the port. Rather than using its own scarce land for stormwater infrastructure, Port Tampa Bay brough in National Stormwater Trust to implement an alternative way to meet water quality goals while providing flood protection and ample space for continuous economic activity.

Results

$1.2M in CAPEX and land savings for Port Tampa Bay, and economic stability through continuous cargo transfer. Nutrient reduction and peak flow management to protect Tampa Bay and its surrounding area from flooding. Excess water quality credits to meet Port Tampa Bay permit requirements.

Location

City of Albany, NY

Customer

City of Albany Water and Water Supply

Situation

Over 530 million gallons of combined sewer overflows (CSOs) annually and flash flooding causing infrastructure damage and public safety and health concerns.

Results

98% capital savings with Opti’s Smart Watershed Network Management and active control implementations on new and existing upstream storage infrastructure. 90% wet weather capture and 8X improvement over passive storage.

Location

Watertown, MA

Customer

Boston Development Group

Situation

66 Galen Street, a Class A, LEED Gold-certified building, integrates commercial and academic spaces with a focus on resilience and environmental stewardship. To meet stormwater regulatory requirements, Boston Development Group employed innovative rainwater harvesting techniques to enhance sustainability and set a precedent for future urban developments.

Results

By implementing Opti’s CMAC for rainwater harvesting, developers realize substantial upfront CAPEX and OPEX savings, and improved operational efficiency.

Location

City of Casselberry, FL

Customer

City of Casselberry

Situation

Flooding in the lakefront communities of Seminole County is a significant hazard for people and property. With its 10−yearstormwater master plan, the City of Casselberry wanted to know how its stormwater assets were performing, starting with Gee Creek.

Results

The City implemented Opti continuous monitoring and predictive analytics to optimize surveillance of Lake Kathryn elevation in order to protect the surrounding neighborhood from flooding. Weather forecasts and rainfall are used to provide predicted inflow to Lake Kathryn while real-time monitored water level determines discharge based on a range of possible weir configurations at the outlet structure. Geosyntec Consultants provided the design and operational protocols for this project.

Location

Lynchburg, VA

Customer

Lynchburg Water Resources

Situation

Located in the foothills of the Blue Ridge Mountains, Lynchburg sits along the historic James River which runs to the Chesapeake Bay. The City needed a new approach to meet its TMDL permit while protecting both water bodies from stormwater pollution.

Results

Since 2017, Opti’s CMAC controls over 158,000 CF by utilizing the dry pond’s available capacity. By retrofitting Warren Pond with Opti’s CMAC, the City of Lynchburg achieves 5% of its pollution reduction goals for Chesapeake Bay TMDL and 100% of its local TMDL goals to meet its MS4 permit.

Location

Multiple Locations, MN

Customer

Capital Region Watershed District

Situation

Capital Region Water District partners with the City of Roseville and Falcon Heights to improve stormwater management, including water conservation, quality and flood mitigation.

Results

Elimination of flood occurrences with Opti’s active controls since 2015

50lb reduction in annual phosphorus loading into Lake McCarrons each year

Location

Beckley, WV

Customer

Beckley Sanitary Board

Situation

Undersized storage and conveyance for two large watersheds that converge under Byrd Drive caused flooding 4-5 times annually, with an average roadway shutdown of 2 hours.

Results

More than $2.0 million in savings by optimizing upstream detention with Opti’s active controls

57% wet weather capture and reduced flood occurrences at Ewart and Byrd intersection

Location

Hoboken, NJ

Customer

North Hudson Sewerage Authority

Situation

Frequent flash flooding and increasing pressure to address ongoing combined sewer overflows (CSOs), North Hudson Sewerage Authority had to take action.

Results

$0.04/gallon wet weather capture vs. >$1.00/gallon with passive controls

59-84% annual wet weather capture

Real-time controls as a requirement for property development

Location

Ellicott City, MD

Customer

Howard County

Situation

Catastrophic flooding in Ellicott City during 2016 & 2018 and >2,000 acre water quality restoration requirement under MS4 permit.

Results

70% capital savings to manage water quality and quantity with Opti’s active controls

$14,000 a year in cost savings to landowners

4X retention time and water quality improvement

Location

Bronx, NY

Customer

Blue Sea Development

Situation

Blue Sea Development deployed Opti at the Arbor House affordable housing complex in the Bronx. This project helps alleviate combined sewer overflow and maximizes water reuse for urban agriculture at a rooftop greenhouse.

Results

87% capital savings with Opti’s rainwater harvesting solution for stormwater capture and water reuse

500,000 gallons of rainwater capture

Location

Multiple Locations, MD

Customer

Maryland Department of Transportation

Situation

The Maryland Department of Transportation (MDOT) is under regulation to treat runoff from 4,621 acres of impervious cover by October 2020. To help them achieve this goal, Opti and The Nature Conservancy (TNC) formed a joint venture and P3 to retrofit private stormwater ponds across the state.

Results

83% or $125,000/acre taxpayer savings compared to traditional approaches

Private landowner tax credits, corporate sustainability, property flood risk mitigation and improved operations