Project-specific evidence and unresolved questions about water supply, recovered water, cooling, wastewater, stormwater, and watershed effects.
Project River and Azure Engineering describe a design in which water recovered from biomass drying supplies process and cooling needs through closed-loop systems. The reviewed materials do not yet provide a complete phase-by-phase water balance covering startup, a gas-only first phase, outages, drought conditions, treatment losses, wastewater pathways, or emergency demand.
The public record establishes the existence of project water claims and the separate state permitting process; it does not yet establish the final operating water balance.
TDEC maintains water-related public-participation and permitting processes that are distinct from municipal annexation and zoning. A city land-use action does not by itself show that a Project River water permit has been issued.
Project materials say moisture recovered during biomass drying would be condensed and reused for process and cooling needs, with routine operations not relying on withdrawals from the Hiwassee River or residential wells.
Sources:RIV-013
The project says proposed PUD 77 would require 90% of process water to be generated onsite, excluding initial priming, and would prohibit a direct utility connection to the Hiwassee River.
Sources:RIV-014
These are attributed design claims. They still require a complete design basis, operating assumptions, and permit-grade documentation.
Project River says biomass drying recovers water for process use and cooling and that normal operations will not draw from the Hiwassee River or residential wells.
Sources:RIV-013
Azure Engineering describes closed-loop cooling and reverse-osmosis systems, with dryer condensing systems supplying makeup water.
Sources:RIV-017
Both the project and engineering descriptions connect recovered process water to biomass drying. That linkage makes phasing and outage scenarios important because the water source described for routine operation depends on another major project component being available.
Water quantity, water quality, stormwater, wastewater, and watershed questions can involve different records and permitting pathways.
TDEC water notices and the Chattanooga Environmental Field Office are the relevant government sources in the current register for confirming actual water, stormwater, discharge, or related filings as they occur.
The Southern Environmental Law Center raised questions about the project’s water and biomass assumptions in a September letter. Placeward treats those statements as third-party legal and technical analysis, not as agency findings.
Sources:RIV-028
Even a recirculating system needs a documented initial fill, makeup-water assumptions, treatment-loss accounting, contingency planning, and a defined pathway for any blowdown, reject water, wastewater, or stormwater that leaves the process loop.
The final grading footprint, streams, wetlands, floodplains, private wells, erosion controls, spills, stormwater, and construction-phase water management remain separate site questions from routine process-water demand.
Expand chronology, community concerns, research priorities, verification methods, and related guidance as needed.
These entries document concerns raised by residents or outside advocates. They are not presented as proven factual conclusions.
Community commentary has questioned what supplemental water source would be used if recovered water is lower than projected, unavailable during startup, or interrupted during a biomass outage.
Residents have raised concerns about potential effects on the Hiwassee River, local drainage, groundwater, and private wells. Those concerns require site-specific hydrologic and permitting evidence before impacts can be characterized.
Because Azure describes phased development beginning with gas generation, the public record needs to show how water and cooling would operate during phases in which the biomass drying system is not yet available.
A system that materially reduces outside water demand could reduce one of the major infrastructure pressures associated with a large industrial campus.
If recovered water is lower than expected or unavailable during a project phase or outage, supplemental water infrastructure or operating constraints could become necessary.
The issue is not whether water recovery and closed-loop cooling are possible in principle. It is whether the actual Project River design produces enough usable water under realistic operating conditions with enforceable limits and contingency plans.
PFPI raises water and watershed concerns, but two different questions need to remain separate: the condition of the receiving watershed and whether Project River’s proposed recovered-water system is sufficient.
TDEC’s April 2025 fish-advisory list identifies a Hiwassee River segment spanning Meigs, McMinn, and Bradley counties with a precautionary largemouth-bass advisory for mercury. That supports describing an existing mercury concern in the watershed. No authoritative national ranking or methodology was identified for PFPI’s broader characterization that the Hiwassee is “one of the most polluted watersheds in the country,” so that phrase should not be repeated as a Placeward fact without a defined national ranking and methodology.
Project River describes closed-loop cooling, no cooling towers, and recovered biomass moisture as the routine process-water source. Those claims are unusual enough that generic water-consumption factors for conventional wet-cooled plants are not a reliable substitute for the actual design. The unresolved requirement remains a complete phase-by-phase water and heat-rejection balance, including startup, gas-only operation, dryer outages, treatment losses, emergency water, and any discharge streams.
This addendum compares PFPI’s analysis with stronger or more direct sources and identifies which claims are supported, assumption-dependent, unresolved, or unverified. PFPI’s conclusions remain third-party analysis rather than project facts.
