What this document is
The commercial structure of one Circular Supply Agreement sized to Alachua County’s residual stream, with the phases, the term and the two payment flows set out separately.
- Phase Initial takes 400 TPD — 146,000 tons a year, 56% of the county residual — and reaches commercial operation 24 months after engagement authorisation.
- One CSA, no elections: the County pays a Beneficiation Fee and receives a Circular Royalty™, as two independent gross transactions that are never netted against each other.
- Ownership of the material transfers to Carbotura on delivery under the CSA. Carbotura does not buy the feedstock; it pays a royalty on what is delivered and processed.
Alachua County
Circular Supply Proposal — Alachua County
One Circular Supply Agreement — 30-year minimum, zero County capital, sited on land the County has already dedicated.
What this proposal is, in five points
- One agreement. A Circular Supply Agreement (CSA) between Alachua County and Carbotura, 30-year minimum term, continuing perpetually unless a 24-month Non-Renewal Notice is served. There are no elections and no alternative structures to choose between.
- Two payment flows, never netted. The County pays a Beneficiation Fee on delivered tonnage. Carbotura pays the County a Circular Royalty™ on the same tonnage. These are independent transactions, reported separately and in full.
- The fee is above your current disposal cost, and we say so. Modelled at $100/ton against a $30/ton gate today and $47/ton from 2029. The County’s return is the royalty, not a cheaper disposal line.
- Zero County capital. Carbotura finances, builds, owns and operates the facility at every phase.
- The site already exists as an intention. The County has dedicated 31 acres beside the Leveda Brown transfer station and issued an RFI seeking exactly this class of counterparty.
The stream this is sized against
Alachua County’s residual arrives at a single point. The Leveda Brown Environmental Park & Transfer Station at 5115 NE 63rd Avenue receives the whole county stream, screens it for prohibited and hazardous material, compacts it, and loads it for haul to Raiford.
The County reported 260,758 tons landfilled in 2024 against 201,872 tons recycled — an overall rate of 67% and a traditional rate of 44%, fifth of Florida’s 67 counties. The transfer station handles 600–800 tons on a normal day, rising to about 1,000 tons after a Gators home game. Average transported volume is 775 tons per day.
The point worth drawing out is that Alachua is not a county with a recycling problem. It is a county that has already done the separation work and is left with a genuinely residual stream — which is precisely the stream Advanced Circular Manufacturing is built to take.
Siting — the County has already chosen the land
The Alachua County Eco Industrial Park sits immediately behind the Leveda Brown transfer station, off NE Waldo Road just north of Gainesville Regional Airport. 31 acres are dedicated today with 80 further acres identified. The County’s own Request for Information seeks “technology/equipment suppliers, project developers, technology developers and end-market users” to design, build, finance, own and/or operate facilities there.
This removes the single most common source of delay in a deployment of this kind. The land is identified, it is in County control, its intended use is already this, and it is adjacent to the point where the entire feedstock stream already aggregates. There is no incremental haul between the transfer station and the facility gate.
The commercial structure
There is one structure. The County executes a Circular Supply Agreement and delivers its residual stream to the facility. Ownership of and liability for the material transfer to Carbotura on delivery. Carbotura does not purchase the material; the CSA transfers it, and Carbotura pays a royalty on what is delivered and processed.
| Element | Term |
|---|---|
| Agreement | Circular Supply Agreement (CSA), 30-year minimum |
| Continuation | Perpetual unless a 24-month Non-Renewal Notice is served |
| Beneficiation Fee | $100–150/ton range; modelled here at the $100/ton floor, escalating 2.5%/yr |
| Circular Royalty™ | 120% of the current-year Beneficiation Fee in Year 1, +1 percentage point per year, uncapped |
| Royalty commencement | 13 months after Carbotura’s receipt of the first Beneficiation Fee payment |
| County capital | None, at any phase |
| Credit floor | BBB– / Baa3 |
The Beneficiation Fee and the Circular Royalty™ are independent transactions. They are reported separately and in full, and are never netted against each other. No table in this package carries a combined or net column.
Deployment phases
Deployment is modular, in 100 TPD units. Phase Initial is the Standard Deployment at 400 TPD — four modules — which takes 56% of the county residual and leaves the existing transfer-and-haul arrangement carrying the balance during ramp.
| Phase | TPD | Annual TPY | Share of residual | Beneficiation Fee · Year 1 | Circular Royalty™ · Year 1 |
|---|---|---|---|---|---|
| Phase Initial | 400 | 146,000 | 56% | $14.60M | $17.52M |
| Phase Medium | 600 | 219,000 | 84% | $21.90M | $26.28M |
| Phase Expanded | 800 | 292,000 | 112% | $29.20M | $35.04M |
Phase Expanded at 800 TPD exceeds the 714 TPD verified residual and assumes construction-and-demolition capture and post-event peaks. It is shown for completeness and is flagged rather than silently sized. Figures ILLUSTRATIVE.
Timeline
| Milestone | Indicative timing | Notes |
|---|---|---|
| LOI / MOU EXECUTION | Earliest available — 2026 | Required to open all subsequent steps |
| Joint Working Group phase completion | ~9–12 months post-authorisation | Stream characterisation verified; site confirmed; commercial terms scoped |
| Term Sheet phase | ~2027 | Beneficiation Fee confirmed; royalty formula locked |
| CSA negotiation and execution | ~2027–28 | Ahead of the New River expiry |
| New River agreement expires | 31 December 2028 (HARD DATE) | Gate rate steps to $47/ton from 2029 |
| Construction — Phase Initial | ~2028–29 | Carbotura capital |
| Phase Initial COD | T0 + 24 months | First feedstock delivered; Beneficiation Fee begins |
| First Circular Royalty™ payment | 13 months after the first Beneficiation Fee payment |
Exogenesis™ — the Archer closed cells, subject to study
The County’s Southwest Landfill at Archer closed approximately thirty years ago. It retains usable capacity and contains unlined cells, and the Board has itself discussed recovering material from those cells and lining them to improve groundwater quality.
Exogenesis™ is a CSA add-on under which legacy mass is recovered and processed through the same facility, with a Legacy Remediation Royalty paid on legacy tonnage in addition to the Circular Royalty™ on current delivered tonnage.
Candidate only. No characterisation of the Archer mass has been published and none has been measured. No tonnage, royalty or remediation figure is asserted anywhere in this package. Exogenesis™ candidacy is conditional on a Waste Characterization Study, a standard Term Sheet phase item. It appears here because the County has already identified the asset and the problem, not because either has been quantified.
What we are asking the Board to do
One thing: authorise an LOI/MOU and open a Joint Working Group.
That is not a commitment to deploy, a procurement award, or an exclusivity grant. It opens a working phase in which the stream is characterised, the site is confirmed, and commercial terms are scoped — so that when the Board decides how to replace the New River agreement, this option is fully specified rather than hypothetical.
The sequence from there is LOI/MOU execution → Term Sheet phase → CSA. Nothing binds either party before CSA execution.
Appendix A — Basis of presentation
All financial figures are USD and are Carbotura planning-basis estimates. Tonnage is VERIFIED from Alachua County’s 2024 FDEP solid waste report (260,758 tons landfilled; 201,872 tons recycled). Transfer-station throughput and the 775 TPD average are VERIFIED from County publications. The $30/ton current gate rate, the 31 December 2028 expiry and the $47/ton rate from 2029 are VERIFIED from the New River Solid Waste Association agreement as reported to the Board.
The Beneficiation Fee is modelled at $100/ton, the floor of the canonical $100–150/ton range; it is a programme specification, not a quoted price. The Circular Royalty™ is computed as Mₙ × BFₙ, where Mₙ = 120% + (n−1) percentage points and BFₙ = $100 × 1.025^(n−1). Accounting standard: US GAAP / GASB. Employment figures are ESTIMATED from the standard per-TPD baseline. Site coordinates are ESTIMATED from the published Eco Industrial Park address. Composition split is ESTIMATED; no published county characterisation study was located.
Gross cost displacement is not claimed. At the modelled fee the County pays more per ton than it does at the New River gate today, and more than the $47/ton contracted from 2029. This document does not present the fee and the royalty as a combined or net figure.
Appendix B — Definitions
- Advanced Circular Manufacturing (ACM)
- Industrial manufacturing that uses post-use material streams as feedstock, converting them into specification-grade manufactured commodities. A manufacturing operation, not a waste-management operation.
- Circular Supply Agreement (CSA)
- The agreement under which ownership of and liability for the material transfer to Carbotura on delivery. The CSA transfers material; it is not a purchase.
- Beneficiation Fee
- The per-ton fee the Feedstock Provider pays for Total Material Conversion. Quoted range $100–150/ton; escalates 2.5% a year.
- Circular Royalty™
- The per-ton royalty Carbotura pays the Feedstock Provider on delivered tonnage, beginning 13 months after Carbotura’s receipt of the first Beneficiation Fee payment. Year 1 is 120% of that year’s Beneficiation Fee, rising one percentage point a year, uncapped.
- Exogenesis™
- A CSA add-on covering recovery and processing of legacy mass, carrying a Legacy Remediation Royalty in addition to the Circular Royalty™.
- FWDC
- Fully-loaded cost of disposal — the counterparty’s own all-in cost of its current system, including transfer, transport and gate.