Nucor's Southeast auto shredder network generates an estimated 360 TPD of Automotive Shredder Residue — $75/ton disposed at permitted landfills, $0 recovered, with regulatory reclassification risk that could push disposal costs above $150/ton.
§0 — Executive Summary
- ~360 TPD of ASR generated annually across the David J. Joseph Company (DJJ) Southeast shredder network and Nucor mill-adjacent operations — 100% of this volume is currently landfilled with zero residual value returned.
- FWDC estimated at $75/ton (Southeast regional average, all-in: gate rate + special handling + transport). Active disposal contracts exist; expiry dates undisclosed. Volume confirmed as structural and continuous, not seasonal.
- Regulatory reclassification is the structural risk. ASR classified as non-hazardous special waste under Alabama ADEM today. Federal RCRA Subtitle C reclassification — driven by lead, cadmium, and PCB constituent levels — could raise disposal costs to $150–$250/ton within the COA planning window.
- The constraint is access, not capability. ACM processes every hydrocarbon-rich and mixed-composition material stream DJJ and Nucor generate. Every classification below reflects a contractual, logistical, or regulatory access constraint — never a technical limitation.
- Decatur, Alabama is the primary location candidate based on co-location with Nucor Steel Decatur LLC, TVA power access, Tennessee River logistics, and Morgan County industrial infrastructure — all detailed in §6 and the Proposal.
~360
TPD Addressable ASR
ESTIMATED
ESTIMATED
$75
Current Disposal Cost / Ton
ESTIMATED
ESTIMATED
5,400
BTU / lb ASR Energy Content
VERIFIED
VERIFIED
$0
Current Residual Return / Ton
State A — no recovery
State A — no recovery
§1 — Feedstock Profile
Capability Finding — Access Constraint Only
ACM (Advanced Circular Manufacturing) is capable of processing every material stream Nucor and DJJ generate. Automotive Shredder Residue is a high-hydrocarbon feedstock (avg. 5,400 BTU/lb) that is mechanistically optimal for Microwave Catalytic Reforming — its organic polymer content (66% by mass) is precisely the input class MCR is engineered to reform at sub-atmospheric, anoxic conditions. Every Access Classification below reflects a contractual, logistical, or regulatory constraint — never a technical limitation.
§1.1 — ASR Composition (Industry Standard)
| Component Class | % by Mass | Key Materials | ACM Relevance |
|---|---|---|---|
| Organic / Plastics | ~66% | PP/PE (~66% of organics), foam, textiles, rubber, wood fiber, paper | Primary reforming substrate → synthetic graphite, hydrogen, hydrocarbon outputs |
| Inerts | ~20% | Glass fines, silica, sand, soil, dirt | Inorganic residual fraction → mineral outputs, recovered aggregate |
| Residual Metals | ~14% | Non-ferrous fines (copper, aluminium, zinc, lead traces), tramp steel | Metal recovery stream → recovered metals commodity output |
Source: ISRI industry standard; EPA ASR characterization literature. Values are representative averages; specific characterization study required for this engagement.
§1.2 — Feedstock Stream Inventory
| Stream | Source Operator | Est. TPD | Est. TPY | Access Classification | Confidence | Constraint Basis |
|---|---|---|---|---|---|---|
| Light ASR (Auto Fluff) DJJ SE shredder network |
The David J. Joseph Company (DJJ) SE regional operations — AL, TN, FL, NC, SC |
~290 | ~105,850 | IMMEDIATE | ESTIMATED | Captive Nucor subsidiary supply. Switching requires internal commercial realignment only. |
| Heavy ASR DJJ non-ferrous processing residual |
The David J. Joseph Company (DJJ) ZORBA/ZURIK processing residuals |
~40 | ~14,600 | IMMEDIATE | ESTIMATED | Co-generated with light ASR at same facilities. Integrated supply. |
| Third-Party SE Shredder ASR Regional operators proximate to Decatur/Birmingham |
Regional independent auto shredders — Birmingham corridor, Tennessee Valley | ~30 | ~10,950 | CONDITIONAL | ESTIMATED | Existing disposal contracts with third-party operators; commercial negotiation required. |
| EV Battery Enclosure & Mixed Polymer ASR Emerging stream — EV end-of-life |
Auto OEM recycling programs, EV dismantlers (emerging, 2027+) | TBD | TBD | ACCESSIBLE | ESTIMATED | Regulatory framework and volume scale developing. Addressable via COA amendment. |
Volume Confidence — Characterization Study Required
All TPD figures are ESTIMATED from DJJ network capacity data (19 auto shredders nationally, SE concentration) and ISRI industry yield ratios (15–25% ASR by shredder input weight). A Community Feasibility Study with DJJ operations data access is required to confirm actual available volumes, stream quality, and geographic distribution across the SE network.
§2 — Regulatory Context
§2.1 — ASR Classification — Alabama and Federal
| Jurisdiction | Current Classification | Regulatory Basis | Risk Vector |
|---|---|---|---|
| Alabama (ADEM) | Special waste — non-hazardous Disposed at lined ADEM-permitted facilities |
Alabama Admin. Code r. 335-13; ADEM Division of Land Resources | Low — stable classification, landfill access available |
| Federal (EPA RCRA) | Conditionally exempt — non-hazardous if constituent thresholds met (TCLP testing) 40 CFR §262.11 |
RCRA Subtitle D (solid waste); Subtitle C threshold triggered by TCLP exceedances for Pb, Cd, PCBs | Medium-High. Lead, cadmium, and PCB constituent levels in ASR can approach or exceed TCLP thresholds. Federal reclassification would escalate disposal costs to $150–$250/ton. |
| ACM / Carbotura | Manufacturing feedstock — NAICS 335991/325120/331410 EPA RCRA Solid Waste Exclusion Petition filed Feb 20, 2026 |
RCRA §1004(27); 40 CFR §261.2(e); 40 CFR §260.43; American Mining Congress v. EPA 824 F.2d 1177 | None. ACM input is classified as manufacturing feedstock, not waste disposal. |
ACM Classification Advantage
Carbotura filed an EPA RCRA Solid Waste Exclusion Petition on February 20, 2026. Under this framework, ASR entering ACM is classified as manufacturing feedstock — not waste — eliminating Subtitle C exposure for the counterparty. For Nucor and DJJ, this represents a structural regulatory risk mitigation that landfill disposal cannot replicate, regardless of current TCLP results.
§2.2 — PCB and Heavy Metal Context
ISRI data indicates ASR PCB concentrations from standard auto shredding operations frequently range from 2–50 ppm. The EPA 2013 interpretation allows plastic recovery from ASR streams below 50 ppm PCBs. Streams exceeding this threshold require hazardous waste characterization and management — at costs that make the COA TMC Fee comparatively attractive even in Year 1.
§3 — Cost Structure
§3.1 — Current Disposal Cost Derivation (FWDC)
FWDC — ESTIMATED · Characterization Study Required
FWDC set at $75.00/ton — SE regional blended average. Verified contract rates require disclosure from Nucor/DJJ operations. Community Feasibility Study will establish verified FWDC as first deliverable.
| Cost Component | $/Ton (Est.) | Basis | Source Type |
|---|---|---|---|
| Alabama landfill gate rate — special waste | $30–$45 | Alabama MSW avg. $35/ton (EREF 2024) + special waste surcharge. Alabama is among the lowest-cost landfill states nationally. | ESTIMATED |
| ASR special handling surcharge | $20–$30 | PCB/lead constituent screening, dedicated lined cell requirements, TCLP documentation | ESTIMATED |
| Transport — shredder to disposal site | $10–$15 | Truck haul, SE market rates; rail if remote | ESTIMATED |
| FWDC Total (Blended) | $75.00 | Blended all-in SE regional estimate | ESTIMATED |
| Hazardous reclassification scenario | $150–$250 | RCRA Subtitle C: hazardous waste manifest, licensed TSD facility, disposal, liability insurance | ESTIMATED |
§3.2 — Current System Cost — Annual Summary
| Phase / Volume | TPD | TPY | Annual Disposal Cost (@ $75/ton) | Annual Return | Net Position |
|---|---|---|---|---|---|
| Initial deployment volume | 100 | 36,500 | $2,737,500 | $0 | −$2,737,500 |
| Medium deployment volume | 200 | 73,000 | $5,475,000 | $0 | −$5,475,000 |
| Expanded deployment volume | 400 | 146,000 | $10,950,000 | $0 | −$10,950,000 |
State A condition: every ton disposed returns $0. Disposal cost is a pure operational expense with no recovery mechanism. Source: ESTIMATED per §3.1 derivation above.
§3.3 — Existing Contracts
Active Disposal Contracts — Expiry Undisclosed · Switching Cost Unknown
DJJ and Nucor mill operations have active ASR disposal contracts with permitted landfill operators in the SE region. Contract expiry dates are not publicly disclosed. Understanding contract terms, break provisions, and expiry windows is a prerequisite for COA transition planning. This is a discovery-stage WARN — not a structural barrier to the COA framework.
§4 — Logistics & Supply Chain
§4.1 — DJJ SE Network Architecture
The David J. Joseph Company (DJJ), wholly owned by Nucor Corporation since 2008, operates one of the largest auto shredder networks in North America — 19 automobile shredders across 70 recycling facilities in 20 states. The Southeast is described by DJJ as its most intensively serviced region, with over 27 locations in Florida alone and SE state coverage spanning Alabama, Kentucky, North Carolina, South Carolina, and Tennessee.
| Logistics Factor | Current State (Disposal) | Under COA (ACM) |
|---|---|---|
| Transport mode | Truck haul to ADEM-permitted landfill | Truck or rail to ACM facility — Morgan County |
| Transport distance (Birmingham shredder cluster) | Variable (nearest lined landfill) | ~85 miles via I-65 N to Decatur |
| Volume continuity | Continuous — structural industrial generation | Continuous — no seasonal variation |
| Rail access | Not typical for ASR landfill haul | Norfolk Southern / CSX freight corridors serve Morgan County; Tennessee River barge alternative |
| End state for material | Permanent landfill disposal — $0 residual value | Manufactured commodities: synthetic graphite, hydrogen, recovered metals |
§4.2 — ASR Volume Generation Rate
ASR constitutes 15–25% of total shredder input by weight (ISRI industry standard). DJJ's 19 auto shredders process ferrous and non-ferrous scrap — at SE capacity utilization, the ASR light fraction alone represents a continuous, high-volume industrial waste stream. At 100 TPD initial deployment, the COA targets approximately 28% of estimated SE DJJ ASR output — a conservative initial penetration allowing proof-of-concept before volume expansion.
§5 — Addressability Analysis
§5.1 — Phased Addressability Table
| Phase | Target TPD | Target TPY | Primary Source | Access Class | Condition for Access |
|---|---|---|---|---|---|
| Phase Initial | 100 | 36,500 | DJJ Light ASR + Heavy ASR — captive SE network (IMMEDIATE streams only) | IMMEDIATE | Internal COA execution with DJJ / Nucor. No third-party contracts required. |
| Phase Medium | 200 | 73,000 | DJJ captive + selective third-party SE shredder volume | CONDITIONAL | Third-party disposal contract expiry or negotiated release. Commercial terms required. |
| Phase Expanded | 400 | 146,000 | Full DJJ SE + third-party + EV emerging stream | CONDITIONAL | Phase Medium established; EV end-of-life stream volumetrically available; COA amendment for new stream types. |
§5.2 — Total Addressable vs. Deployment Target
| Category | Est. TPD | Est. TPY | Note |
|---|---|---|---|
| DJJ SE captive ASR (IMMEDIATE) | ~330 | ~120,450 | Light + heavy ASR from owned DJJ SE shredder operations |
| Third-party SE shredder ASR (CONDITIONAL) | ~30+ | ~10,950+ | Birmingham corridor, Tennessee Valley regional operators |
| EV emerging stream (ACCESSIBLE) | TBD | TBD | Structurally growing; volumes undetermined at discovery stage |
| Total Addressable (Conservative) | ~360 | ~131,400 | Captive + near-term conditional. ESTIMATED |
| COA Target — Expanded | 400 | 146,000 | Requires Phase Medium + emerging stream confirmation |
§6 — Infrastructure Map — SE Industrial Network
The map below shows the current State A infrastructure: DJJ auto shredder operations (amber), Nucor EAF steel mills (dark grey), and current ASR landfill disposal sites (blue) across the North Alabama / Southeast region. The ACM site candidate at Decatur is detailed in the Proposal.
Map requires a Google Maps API key.
Set GOOGLE_MAPS_API_KEY in config.js to display the interactive infrastructure map.
SE Industrial Network — State A
ASR Primary Generators
DJJ Southern Recycling — Birmingham Hub
The David J. Joseph Company (DJJ) · Nucor subsidiary
SE regional auto shredder hub. Light ASR (fluff) + ZORBA/ZURIK non-ferrous processing. ~85 miles south of ACM site candidate via I-65.
DJJ / SE Shredder Operations — Birmingham Corridor
David J. Joseph Company — SE auto shredder network
19 auto shredders nationally; SE region is DJJ's largest concentration. Alabama, FL, TN, NC, SC operations. ASR generation continuous and structural.
Nucor EAF Steel Mills
Nucor Steel Decatur, LLC
Nucor Corporation · Sheet Steel Mill · Morgan County, AL
Nucor's SE flagship sheet mill. EAF operation on Tennessee River. Multiple adjacent facilities (Tubular Products, Towers & Structures, Galvanizing). ACM preferred co-location candidate.
Nucor Tubular Products — Decatur
Nucor Corporation · Tubular Steel Products · Decatur, AL
Adjacent to Nucor Steel Decatur sheet mill. Part of integrated Decatur industrial campus. Nucor Towers & Structures ($125M, 2023) also located here.
Nucor Steel Tuscaloosa, Inc.
Nucor Corporation · Steel Coil & Plate · Tuscaloosa, AL
1700 Holt Road, Tuscaloosa AL 35404. EAF operation, steel coil and cut-to-length plate. $280M expansion underway (projected 2027). Secondary ACM site candidate region.
Current ASR Disposal Sites
ADEM-Permitted Landfill — North Alabama Corridor
Morgan County / Limestone County region · ESTIMATED
Current ASR disposal destination, north Alabama. Non-hazardous special waste accepted at lined cell. Gate rate + special handling ~$65–85/ton all-in. ESTIMATED location
Legend
ASR Primary Generator (DJJ auto shredder)
Nucor EAF Steel Mill
Current ASR Disposal (active landfill)
§7 — Executive Implications
Executive Implications — Waste Feedstock Study
- $10.95M/year disposed, $0 returned at Expanded scale. At 400 TPD and $75/ton, Nucor/DJJ's current ASR disposal costs exceed $10.9M annually in the SE region alone — with no residual value recovered. Every ton landfilled is a permanent operational expense with zero offsetting return.
- RCRA reclassification is not theoretical — it is the structural risk of this asset class. ASR constituent profiles (lead, cadmium, PCBs) mean TCLP threshold exceedances are possible without process changes. A federal reclassification to hazardous waste would more than double disposal costs to $150–$250/ton. The COA eliminates this exposure class entirely for feedstock entering ACM.
- Decatur, Alabama concentrates every advantage in one location. Nucor Steel Decatur, TVA power, Tennessee River logistics, Morgan County industrial zoning, and DJJ Birmingham supply corridor within 85 miles — the Site Candidate Analysis in the Proposal quantifies these factors against alternatives.
- The characterization study is the next required step. Volume confirmation, TCLP characterization, and disposal contract review are the three inputs required to move this engagement from discovery to negotiating stage. These are internal data access decisions — not third-party dependencies.
Appendix A — Evidence Chain
A.1 — Confirmed Structural Facts
| Fact | Confidence | Source |
|---|---|---|
| DJJ operates 19 automobile shredders across 70 US facilities | VERIFIED | djj.com/recycling (confirmed April 2026) |
| DJJ SE region is its most intensively serviced area (27+ FL locations; AL, TN, NC, SC) | VERIFIED | djj.com/locations (confirmed April 2026) |
| Nucor acquired DJJ for $1.44B in 2008; DJJ has brokered ferrous scrap for Nucor since 1969 | VERIFIED | Crunchbase; Nucor corporate history |
| ASR constitutes 15–25% of auto shredder input by weight | VERIFIED | ISRI; EPA ASR literature; Waste Advantage Magazine |
| ASR organic/plastic fraction ~66% by mass; avg. heating value 5,400 BTU/lb | VERIFIED | GEP Ecotech; EPA ASR characterization studies |
| US generates ~5 million tons ASR annually; landfill is dominant disposal pathway | VERIFIED | ISRI; Wikipedia ASR article; Waste Advantage Magazine |
| Nucor Steel Tuscaloosa coordinates: 33.234761°N, 87.508498°W | VERIFIED | Global Energy Monitor (March 2026) |
| Alabama MSW landfill avg. tipping fee among lowest nationally | VERIFIED | EREF "Analysis of MSW Landfill Tipping Fees — 2024" (wasteoptima.com) |
| Carbotura EPA RCRA Solid Waste Exclusion Petition filed February 20, 2026 | VERIFIED | Carbotura corporate record |
A.2 — Estimated / Modeled Values
| Value | Basis |
|---|---|
| FWDC $75/ton | SE regional blended model: EREF 2024 Alabama MSW base ($30-45) + special handling ($20-30) + transport ($10-15) |
| ~360 TPD total addressable ASR | DJJ network capacity ratios × ISRI 15-25% yield × SE capacity fraction |
| Stream sub-volumes (290/40/30 TPD) | Proportional from total addressable; light/heavy/third-party split from industry literature |
Appendix B — Change Factors
| Factor | Direction | Probability | Impact |
|---|---|---|---|
| Federal RCRA Subtitle C reclassification of ASR | Disposal cost ↑ $150–$250/ton | Medium | High — doubles to triples FWDC; dramatically strengthens COA economics |
| Alabama ADEM regulatory tightening on special waste landfill acceptance | Disposal cost ↑; capacity ↓ | Medium | High — reduces landfill access, increases urgency of COA |
| EV vehicle fleet growth → higher ASR volumes | ASR volume ↑; composition shift | High | Medium — expands addressable feedstock; polymer mix shifts toward battery enclosures |
| DJJ network expansion in SE (new shredder capacity) | ASR volume ↑ | Medium | Positive — additional feedstock for Phase Expanded and beyond |
| Landfill capacity tightening — Morgan County / N. Alabama | Disposal access ↓; gate rates ↑ | Medium | Medium-High — increases pressure to secure alternative disposition |
| ASR PCB threshold enforcement activity (EPA Region 4) | Compliance cost ↑ | Medium | Medium — triggers additional testing obligations and potential hazardous waste events |
Appendix C — Sources and References
| Source | Data Used | Date |
|---|---|---|
| djj.com/locations; djj.com/recycling; djj.com/about | DJJ network size, SE geographic coverage, shredder count, ferrous processing volumes | April 2026 |
| nucortubular.com/locations/decatur | Nucor Tubular Products Decatur facility confirmation and location | April 2026 |
| governor.alabama.gov — Nucor Towers & Structures announcement | Nucor Decatur campus investment; Morgan County economic context | February 2023 |
| gem.wiki/Nucor_Steel_Tuscaloosa_plant (Global Energy Monitor) | Tuscaloosa facility coordinates; EAF technology confirmation; $280M expansion | March 2026 |
| Environmental Research & Education Foundation (EREF) — "Analysis of MSW Landfill Tipping Fees — 2024" | Alabama MSW tipping fee baseline; national/state comparison framework | 2025 (2024 data) |
| ISRI (Institute of Scrap Recycling Industries) — ASR industry data | ASR yield ratios (15–25% of shredder input); annual US ASR volume (~5M tons) | Industry standard |
| EPA RCRA — 40 CFR §262.11; RCRA §1004(27); 40 CFR §261.2(e) | ASR hazardous waste determination framework; Subtitle D/C threshold basis | Current |
| Alta Environmental — altasouthwest.com/environmental/automotive-shredder-residue | ASR regulatory complexity; state variance in classification | October 2024 |
| Okon Recycling — ASR Processing technical overview | ASR composition; heavy metal constituent profiles; PCB context | October 2025 |
| California DTSC — ISRI ASR Study (2013) | ASR composition characterization; treatment basis; constituent analysis | August 2013 |
| Crunchbase — David J. Joseph Company profile | DJJ acquisition by Nucor 2008; DJJ founding and history; brokerage role since 1969 | April 2026 |
| Carbotura — EPA RCRA Solid Waste Exclusion Petition | ACM manufacturing feedstock classification basis; February 20, 2026 filing | February 2026 |
Appendix D — Glossary
| Term | Definition |
|---|---|
| ACM | Advanced Circular Manufacturing — Carbotura's industrial process converting post-use material streams into manufactured commodities. Classified under NAICS 335991/325120/331410 (manufacturing), never NAICS 562213/562219 (waste disposal). |
| ASR / Auto Fluff | Automotive Shredder Residue — the non-metallic residual fraction (15–25% by weight) remaining after auto shredding and ferrous/non-ferrous metal recovery. Also called auto fluff, shredder light fraction (SLF), or car fluff. Composed primarily of plastics, foam, rubber, glass fines, textiles, and residual metal traces. |
| COA | Circular Offtake Agreement — Carbotura's 30-year Build-Own-Operate commercial structure. The counterparty delivers feedstock and pays the TMC Fee; Carbotura pays the Circular Royalty beginning 13 months after COD. |
| COD | Commercial Operations Date — the date on which an ACM phase begins accepting feedstock at full permitted capacity. |
| DJJ | The David J. Joseph Company — wholly-owned Nucor subsidiary (acquired 2008). World leader in scrap metal recycling and brokerage since 1885. Operates 70 facilities including 19 automobile shredders across the US. SE region is its most active concentration. |
| EAF | Electric Arc Furnace — the steelmaking technology used by all Nucor mills. Uses scrap metal (not iron ore) as primary input, producing steel via electrical melting. Scrap throughput generates the ASR supply chain as a co-product. |
| FWDC | Full Weighted Disposal Cost — the all-in cost per ton of feedstock disposal in the current system (State A). For ASR: includes landfill gate rate, special handling surcharge, and transport. |
| Heavy ASR | The residual fraction from non-ferrous metal processing (ZORBA/ZURIK separation). Constitutes approximately 20% of total ASR. Contains rejected contaminants from secondary metal recovery. |
| Light ASR (Fluff) | The primary ASR fraction (80%+ of total ASR). Generated at the shredder when non-ferrous metals are air-classified from the residual stream. High organic/polymer content; most amenable to MCR reforming. |
| MCR | Microwave Catalytic Reforming — Carbotura's proprietary process technology. Anoxic (oxygen-free), sub-atmospheric, non-combustion. Mechanistically incompatible with incineration. Converts hydrocarbon-rich feedstocks into synthetic graphite, hydrogen, and recovered metals. |
| NAICS | North American Industry Classification System. ACM facilities are classified as manufacturing (335991 Electronic and Other Electrical Equipment, 325120 Industrial Gas Manufacturing, 331410 Nonferrous Metal Smelting), never as waste disposal (562213 Solid Waste Combustion, 562219 Other Nonhazardous Waste Treatment). |
| RCRA | Resource Conservation and Recovery Act. Federal framework governing solid and hazardous waste. Subtitle D: solid (non-hazardous) waste. Subtitle C: hazardous waste — significantly more stringent disposal requirements. ASR hazardous classification is determined by TCLP testing under 40 CFR §262.11. |
| TCLP | Toxicity Characteristic Leaching Procedure — EPA test method (SW-846 Method 1311) used to determine whether a waste material exhibits hazardous characteristics. TCLP thresholds for lead (5 mg/L), cadmium (1 mg/L), and other constituents determine RCRA Subtitle C applicability for ASR. |
| TMC Fee | Total Manufacturing Contribution Fee — the per-ton fee paid by the counterparty to Carbotura for feedstock acceptance and processing. For this engagement: $150/ton base, escalating 2.5%/year over the 30-year COA term. |
| TVA | Tennessee Valley Authority — federal power utility serving Alabama, Tennessee, and adjacent states. Morgan County (Decatur) is within TVA's service territory; TVA industrial rates are among the lowest in the United States, a significant advantage for energy-intensive ACM operations. |
| ZORBA / ZURIK | Non-ferrous metal concentrates recovered from auto shredding. ZORBA is the mixed non-ferrous fraction; ZURIK is the stainless steel fraction. Separation of these concentrates from ASR residuals generates the heavy ASR stream. |
Planning basis notice: This Waste Feedstock Study is based on publicly available industry data, operator information confirmed via web research (April 2026), and Carbotura standard parameters where specific data is not available. Volume, cost, and regulatory estimates are identified as ESTIMATED and require verification through a Community Feasibility Study. This document does not constitute financial, legal, or regulatory advice.