First Stop Toolbox for Lagoons
The first stop toolbox is designed to provide permit compliance assistance to small community lagoon wastewater facility operators (or their managers such as mayors or local decision makers). It is designed for those experiencing compliance challenges for ammonia, nitrogen and/or phosphorus or those who otherwise wish to improve their facility operations. The toolbox will not collect and store user information and is not used for regulatory purposes.
This toolbox is intended to guide the user through a sequence of questions aimed at identifying the best resources for the user to return to compliance and/or address identified challenges.
The toolbox provides guidance and resources on Compliance/Technical Assistance, Technology Solutions, Financial Assistance, and Regulatory Options.
Please select the option below that best describes your role.
Process Control and Operations & Maintenance
Question | Your answer |
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Is all critical equipment associated with the lagoon system functional? For example, pumps, valves, aerators, baffle curtains, etc. | |
Was there an operational error of misunderstanding that led to non-compliance? | |
Is there significant bank vegetation growth, algae, floating solids, waterfowl, leaking dikes, or excessive odors observed in and around the lagoon? | |
Is there significant aquatic vegetation growth? For example, duckweed, cattails, etc. |
Reference Title | URL | Description |
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Inflow and Infiltration
Question | Your answer |
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Is there an increase in flow entering the lagoon during and directly after a rainstorm or spring snow melt? |
Reference Title | URL | Description |
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Climate Change Resiliency
Question | Your answer |
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Is the town or system being adversely affected by severe weather, sea level rise, land subsidence? |
Reference Title | URL | Description |
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Hydraulic Short-Circuiting
Question | Your answer |
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When observing the lagoon surface are there areas of stagnant water and accumulated solids or vegetation while other areas are clear? |
Reference Title | URL | Description |
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Design Limitations
Question | Your answer |
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Has the town experienced an increase in population size over the last 5 years? | |
Have permit limits become more stringent since the last permit was issued? |
Reference Title | URL | Description |
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Ammonia Removal Optimization
Question | Your answer |
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Does the system have challenges meeting effluent limits or is out of compliance for ammonia? |
Reference Title | URL | Description |
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Total Nitrogen Removal Optimization
Question | Your answer |
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Does the system have challenges meeting effluent limits or is out of compliance for total nitrogen? |
Reference Title | URL | Description |
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Phosphorus Removal Optimization
Question | Your answer |
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Does the system have challenges meeting effluent limits or is out of compliance for phosphorus? |
Reference Title | URL | Description |
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Technical Assistance Provider List
Question | Your answer |
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Are you aware of technical assistance providers available to help small community system owners and operators? |
Reference Title | URL | Description |
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Solutions can include one more of the following approaches, the proceeding questions will be used to determine what approaches are best suited for your system.
Toolbox Users
Question | Your Answer |
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Does the existing footprint of the facility allow for additional process units or is there space available adjacent to the facility? | |
Which of the following effluent limits does the facility have challenges meeting? (Check all that apply) | |
Has influent or sludge volume exceeded the current capacity of the system to maintain adequate freeboard (the space between the lagoon brim and the waterline) in the lagoon due to increased contributions? | |
Is your treatment system non-discharge AND at capacity? |
Effluent Limit Challenges
You have responded "Yes" or "Unknown" to 3 questions in the Technology Solutions section. We recommend that you reach out to a technical assistance provider for guidance. Please access the resources below to connect with a technical assistance provider:
Your organization may be eligible for several different financial assistance options, the proceeding questions will be used to determine what options your organization may be eligible for.
Toolbox Users
Question | Your Answer |
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What stage of seeking financial assistance are you currently in? | |
Do you need assistance in filling out financial paperwork? | |
Has your community ever applied for financial assistance before? | |
Do you need assistance in filling out financial paperwork for a current problem? | |
What is size is your customer base? | |
Does your community qualify as a Tribe or Alaska Native Village? | |
Do you need assistance in filling out financial paperwork? | |
What is size is your customer base? | |
Does your community qualify as a Tribe or Alaska Native Village? |
Question | Your Answer |
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Have you explored technology and financing options to meet your permit limits? | |
Do you have plans to meet permit requirements, but need additional time to modify or upgrade treatment facilities? | |
Are there feasible actions you could take or technologies you could utilize to reduce the pollutants in your effluent over time, even if you are still not able to meet your permit requirement? |
Consider revisiting the Compliance and Technical Assistance and Technology Solutions sections. Then consider talking to your state or authorized Tribe about whether a permit compliance schedule is an appropriate option. A permit compliance schedule may be appropriate when the Water Quality-Based Effluent Limit (WQBEL) based on the applicable Water Quality Standard (WQS) is achievable, but the discharger needs additional time to modify or upgrade treatment facilities in order to meet its WQBEL. In such a case, a permit compliance schedule would specify a schedule and resulting milestones will lead to compliance "as soon as possible". See Clean Water Act Section 502(17) for a definition of "schedules of compliance" and 40 CFR 122.47.
Reference Title | URL | Description |
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Consider revisiting the Compliance and Technical Assistance and Technology Solutions sections. Then consider talking to your state or authorized Tribe about whether the desired condition or water quality target (criteria) that your permit limit is based on is appropriate.
Reference Title | URL | Description |
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Consider revisiting the Compliance and Technical Assistance and Technology Solutions sections. Then consider talking to your state or authorized Tribe about whether a water quality standard (WQS) variance would be an appropriate path forward. A WQS variance can be appropriate to address situations where the designated use and associated criterion are shown to be unattainable for a period of time, but feasible progress could be made toward attaining the designated use and criterion.
Reference Title | URL | Description |
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