The Challenge
In July 2023, Virridy began a new collaboration with Morrison Creek Water & Sanitation District to study an innovative approach to wastewater compliance and watershed restoration. Morrison Creek provides essential services to approximately 500 homes south of Steamboat Springs, Colorado, with a maximum discharge rate of .35 million gallons per day.
Morrison discharges into Stagecoach Reservoir, located on the Upper Yampa River. The rives has had toxic algae blooms, due to high levels of nutrients, including phosphorus and nitrogen.
Testing from 2021 shows some toxic algal blooms have been found in Stagecoach Reservoir, typically in late summer, though the levels have not required recreational closures.
Agencies, such as USDA Natural Resources Conservation Service, are working with landowners regarding nutrient management, including fertilizer application, grazing practices, and riparian buffers.
While increased nutrient levels appear not to be connected to the wastewater treatment plant output, the district is expecting to be required by the Colorado Department of Public Health & Environment to reduce levels of phosphorus and nitrogen in its discharge in upcoming permits.
Comprehensive Compliance Options Analysis
Virridy is currently conducting a comprehensive compliance options analysis. We will examine the lifecycle emissions impact of a potential reverse osmosis facility upgrade and compare it to the emissions benefit of reducing agricultural runoff upstream.
Our approach will involve looking at measures such as livestock fencing and off-channel watering facilities, riparian restoration, sustainable on-field practices like cover cropping, irrigation upgrades and small edge-of-field wetlands. Importantly, we will calculate the amount of carbon credits that could be generated through a new carbon crediting methodology, which allows project developers to compare the greenhouse gas emissions impacts of different options and monetize that difference if a utility selects the lower-carbon option.
This methodology is in expert review with Regen Registry. The financial incentive would reduce the costs of a watershed compliance program, while also demonstrating the projected air quality impacts of the reverse osmosis upgrade.
Data-Driven Decision Making
Our objective is to deliver this analysis to the team at Morrison Creek within a few months, providing them with the vital data they need to make informed compliance decisions. This collaboration underpins Virridy's mission to transform the water treatment industry through carbon financing, empowering our clients to make financially and environmentally responsible choices that also holistically enhance the health of their local watersheds.
“This could be a game changer, not only for us at Morrison Creek, but for the entire water treatment industry. We can't wait to delve deeper into this promising avenue."
- Geovanny Romero, Morrison Creek Water & Sanitation District
Virridy’s work has been made possible by a critical grant by the Gordon and Betty Moore Foundation, as well as a pre-purchase carbon credit commitment by M.A. Mortenson Companies.
In July 2023, Virridy began a new collaboration with Plum Creek Water Reclamation Authority (PCWRA) to study an innovative approach to wastewater compliance and watershed restoration.
Virridy begins studying Chatfield Watershed for the Plum Creek Water Reclamation Authority
PCWRA provides essential wastewater services to over 100,000 ratepayers in the Castle Rock region of SW Denver, Colorado. The facility expanded in 2019 to be able to discharge a maximum of 9.44mgd to nearby Plum Creek, which drains into the Chatfield Reservoir, located on the South Platte River.
PCWRA is expecting to be required to reduce levels of phosphorus, nitrogen and temperature in its discharge by the Colorado Department of Public Health & Environment in upcoming permits, and has begun to study what facility upgrades may be required to do so. Preliminary projections are that PCWRA will need to add an enhanced BNR upgrade, microfiltration and a double reverse osmosis process for phosphorus and nitrogen reductions, and cooling tower for temperature reductions.
Comprehensive Compliance Options Analysis
In the coming months, Virridy will be conducting a comprehensive compliance options analysis. We will examine the full lifecycle emissions impact of a range of projected facility upgrades, and compare them to the emissions benefit of reducing nutrient runoff and solar loading in both Plum Creek and the South Platte River. Our approach will involve looking at measures such as livestock fencing (and off-channel watering facilities), riparian restoration to develop more stream shade, sustainable on-field practices like cover cropping, irrigation upgrades, small edge-of-field wetlands, and large-scale natural treatment wetlands.
Importantly, we will calculate the amount of carbon credits that could be generated through a new carbon crediting methodology which allows project developers to compare greenhouse gas emissions impacts of different options and monetize that difference if a utility selects the lower-carbon option. This methodology is currently in expert review with Regen Registry. This financial incentive would reduce the costs of a watershed compliance program, while also clearly demonstrating the projected air quality impacts of potential upgrades.
Vital Data To Make Informed Compliance Decisions
Our objective is to deliver this analysis to the team at Plum Creek within a few months, providing them with the vital data they need to make informed compliance decisions. This innovative collaboration underpins Virridy's mission to transform the water treatment industry through carbon financing, empowering our clients to make financially and environmentally responsible choices that also holistically enhance the health of their local watersheds.
“We at PCWRA are excited to be embarking on this work with our contractor Virridy. We believe this analysis could redefine the way we approach our responsibilities, turning challenges into opportunities. The potential to leverage carbon finance and watershed compliance is an exciting frontier. We're committed to learning more about how this new model could benefit not just our operation, but the overall health of the watershed we serve."
- Authority Manager for PCWRA Weston Martin
Financial and Ecological Benefits
Virridy CEO Dr. Evan Thomas adds,
“We're thrilled to be working with Plum Creek Water Reclamation Authority on this pioneering initiative. Through this analysis, we aim to demonstrate that carbon finance and environmental compliance can go hand-in-hand, delivering both financial and ecological benefits.
We believe this innovative approach has the potential to revolutionize the industry, and it perfectly aligns with Virridy's mission to drive positive change in water management practices."
Virridy’s work has been made possible by a critical grant by the Gordon and Betty Moore Foundation, as well as a pre-purchase carbon credit commitment by M.A. Mortenson Companies.
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