On April 10, 2026, the New York State Department of Environmental Conservation issued the modified SPDES permit for the Oak Orchard Wastewater Treatment Plant. The agency released it together with a Responsiveness Summary, a SEQR Findings Statement, and — most notably — a Justification Statement finding the project inconsistent with New York’s own climate law. We read all four. Every finding below is a direct quote or citation, anchored to page and paragraph.
The Department of Environmental Conservation released the Oak Orchard permit package on April 10, 2026. It was not announced in a press release. It was transmitted to interested parties who had submitted comments during the public comment period. The full set:
What follows are the most significant findings in those documents, in DEC’s own language. Every quote below is verifiable against the public record. Every page citation refers to the document named alongside it.
The signed permit establishes a 10 ng/L daily maximum “action level” for only two PFAS compounds — PFOA and PFOS. The remaining 38 PFAS compounds receive the designation “Monitor” — quarterly sampling with no numeric limit of any kind. The permit’s fact sheet, on page 18, explains how the 10 ng/L figure was derived:
“The action levels are set at NYS Department of Health (DOH) Maximum Contaminant Level (MCL) of 10 ng/L for drinking water as a proxy for background concentrations in the facility’s influent.” — SPDES Permit NY0030317, Fact Sheet, page 18
The DOH drinking water MCL is a health-based standard for finished tap water served to the public. It is not a “background concentration.” It was never intended to serve as one. DEC is using the level at which water becomes unsafe to drink as the trigger value for deciding whether the Oak Orchard plant has to investigate its own discharge.
The action level was not derived from any measurement of ambient conditions in the Oneida River. The permit acknowledges, separately, that the chronic aquatic-life guidance value for PFOS in a Class B waterbody is 160,000 ng/L — a number 40,000 times higher than the EPA’s federal drinking water MCL — and that no applicable aquatic guidance value exists for PFOA at all in a Class B waterbody.
The permit’s Pollutant Summary Table for Outfall 001 (fact sheet, page 47) reports the existing municipal plant’s measured PFOA effluent at 6.0 ng/L (8 detects in 9 samples). The Responsiveness Summary (Section I.I, page 9) reports the existing maximum effluent PFOS concentration at 16 ng/L.
The permit’s action level is 10 ng/L. Oak Orchard’s current municipal discharge — from sanitary wastewater alone, with no industrial PFAS input — already exceeds the action level for PFOS by 60 percent. Before Micron sends a single drop of industrial wastewater.
The fact sheet makes no reference to this exceedance. The Emerging Contaminant Minimization Program schedule triggers track-down only upon “confirmation of initial Action Level exceedance” after the effective date of May 1, 2026. The exceedance is already documented in the permit application itself. The permit nonetheless defers the track-down program to a first post-effective-date sample of a condition the agency has already recorded in writing.
The fact sheet Pollutant Summary Table documents current effluent detections of multiple PFAS compounds beyond PFOA and PFOS:
PFPeA — 23 ng/L (estimated), 8/8 samples
PFHxA — 15 ng/L (estimated), 8/8 samples
PFHpA — 6.7 ng/L (estimated), 3/8 samples
PFNA — 2.3 ng/L, 2/8 samples
Five of the measured compounds exceed the 10 ng/L action level that DEC applied to PFOA and PFOS. None of them received a limit. The justification for all 38 unregulated compounds is identical boilerplate, repeated verbatim 38 times in the fact sheet:
“Consistent with 6 NYCRR 750-1.13(b) and USEPA memos dated April 28, 2022, and December 5, 2022, the permit includes monitoring to support establishment of future standards or performance-based requirements.” — SPDES Permit NY0030317, Fact Sheet, pages 47–56
“Future standards or performance-based requirements” means exactly what it says: the limits, if they ever come, come later. After the plant is built. After Micron is discharging. After the ratepayers are on the bond.
The permit’s Pollutant Summary Table for Outfall 01B — the internal outfall that carries Micron’s treated industrial wastewater to the Oneida River — has no existing effluent data. Footnote 18 of the fact sheet (page 77) explains why:
“The industrial treatment train has not yet been constructed; therefore, no effluent data is available to calculate effluent quality. Effluent quality is projected based on the design and calculations presented in the engineering report titled ‘Oak Orchard Industrial Wastewater Treatment Plant and Water Reclamation Facility Conceptual Design Engineering Report’ (August 20, 2025).” — SPDES Permit NY0030317, Fact Sheet, page 77, footnote 18
The Conceptual Design Engineering Report, at page 1-9, rests its PFAS treatment rationale on a single source:
“Per and Polyfluoroalkyl Substances (PFAS) and mercury — Micron stated during the workshops that PFAS and mercury are anticipated in low concentrations in the waste load coming from their facilities. These compounds will be limited in the discharge from Micron to a level that can be removed in the biological treatment to values below the discharge requirements.” — Oak Orchard Conceptual Design Engineering Report, November 11, 2025, page 1-9
A publicly-funded industrial treatment plant — estimated by Brown and Caldwell, the County’s own engineer, at $1.4 to $2.6 billion — is being permitted, and its effluent projections (the projections DEC used to find “no reasonable potential” for water quality violations) were derived from unverified statements Micron made at design meetings. The permit’s own documentation confirms this.
The permit requires PFAS sampling at Outfalls 001 and 01B using EPA Method 1633/1633A (footnote 2, every PFAS table). Four grab samples per year, one per calendar quarter.
Method 1633’s 40 target compounds are heavily weighted toward long-chain PFAS — the compounds the semiconductor industry stopped using over a decade ago. Short-chain PFAS (the compounds modern fabs actually use) and ultrashort-chain PFAS (the generation after that) are poorly represented in Method 1633’s target list. Cornell University’s non-targeted analysis of semiconductor fab wastewater identified PFAS compounds at concentrations many times higher than Method 1633 detects.
Multiple commenters requested additions to the monitoring program: the Total Oxidizable Precursor (TOP) Assay, non-targeted analysis, weekly total organic fluorine measurement, and monthly sampling frequency. Sierra Club Atlantic Chapter, the Onondaga Nation’s attorney Alma Lowry, Clean Water Action on behalf of CHIPS Communities United and the Center for Public Environmental Oversight, Sierra Club CNY conservation chair Don Hughes, Ph.D., and others. DEC’s response to all of these requests, in the Responsiveness Summary (Section I.J, page 10):
“No changes have been made to the permit in response to this comment.” — Responsiveness Summary, Section I.J, page 10
The Onondaga Nation, through its General Counsel Alma Lowry, Esq., filed comments on December 23, 2025 making a specific regulatory argument:
Federal pretreatment regulations — 40 C.F.R. §§ 403.3 and 403.5 — only authorize publicly-owned treatment works to set local discharge limits on industrial users to prevent “pass-through and interference,” defined as industrial discharges that cause the POTW to violate its own permit. If the SPDES permit contains no enforceable limits on 38 of 40 PFAS compounds, the discharge of those 38 compounds cannot, by federal definition, cause “pass-through.” Oak Orchard has no federal authority under those regulations to impose pretreatment limits on Micron for the unregulated 38.
DEC’s response to this argument, in the Responsiveness Summary (Section II.E, page 15):
“See responses to comments I.K and I.L.” — Responsiveness Summary, Section II.E, page 15
Responses I.K and I.L address different questions. They do not engage the legal authority argument raised.
The Industrial Pretreatment Program section of the signed permit (pages 39–41) requires Onondaga County to “control through permit or similar means the contribution to the POTW by each SIU to ensure compliance with applicable pretreatment standards and requirements.” Under federal law, those requirements are the pretreatment standards and local limits that exist. The permit has now confirmed that for 38 of 40 PFAS compounds, they do not exist. Onondaga County has been assigned a regulatory responsibility it may have no federal authority to exercise.
The companion document to the permit — the Justification Statement for Inconsistency with Section 7(2) of the Climate Leadership and Community Protection Act, dated April 10, 2026 — opens with a finding. The Oak Orchard Project will emit 128,027 tons of CO2-equivalent as potential-to-emit, 48,004 tons of actual emissions in 2030, and 67,662 tons of actual emissions in 2050 (20-year global warming potential basis). The Climate Leadership and Community Protection Act, signed into law in 2019, sets statewide GHG reduction milestones for both of those years. DEC found, in writing:
“NYSDEC finds that issuing permits for the Oak Orchard Project would be inconsistent with the attainment of the statewide GHG emission levels under the Climate Act because of the projected increase in GHG emissions associated with the Oak Orchard Project.” — CLCPA Section 7(2) Justification Statement, April 10, 2026, page 3
DEC then provided the legal justification for issuing the permit anyway:
“DEC determined that permitting the Oak Orchard Project is justified because it serves the Micron Semiconductor Manufacturing Project, which directly and materially serves national security interests.” — CLCPA Section 7(2) Justification Statement, April 10, 2026, page 3
The footnote supporting that sentence cites “Title XCIX, CHIPS for America, of the William M. (Mac) Thornberry National Defense Authorization Act for Fiscal Year 2021.”
The Hochul administration, acting through DEC, has invoked the National Defense Authorization Act as the legal basis for waiving New York’s own climate law — to permit a semiconductor wastewater discharge into the drinking water watershed for 500,000 Central New Yorkers, and the St. Lawrence River drinking water source for more than 3 million people downstream. The statement exists in writing. It is on the record. It is not, to our knowledge, supported by any prior New York permit decision.
The SEQR Findings Statement (April 10, 2026), at page 5, describes how Micron’s industrial wastewater will be controlled at the discharge point from Micron’s own campus:
“OCDWEP will set limits in Micron’s IWDP that must be met at the point of discharge from the Micron Campus, prior to being sent as pretreated wastewater via the conveyance pipeline to the IWWTP. These effluent limitations will be consistent with EPA pretreatment guidelines and the requirements of the OOWWTP SPDES permit.” — SEQR Findings Statement, April 10, 2026, page 5
The Industrial Wastewater Discharge Permit (IWDP) to Micron has not been drafted. The “requirements of the OOWWTP SPDES permit” for 38 of 40 PFAS compounds are, as the permit itself confirms in Finding 03 above, monitoring only. DEC’s SEQR finding of “no significant adverse effect on surface water quality” rests on a permit framework that has not been built, which will contain limits derived from a master permit that contains no limits on the compounds most at issue.
Micron’s projected water intake for the Clay campus, documented in the 2023 Draft Environmental Impact Statement, is 48 million gallons per day at full four-fab build-out. The DEIS disclosed, in Micron’s own language, that this figure “would also be about 6 million more than all of the company’s locations worldwide use now, including fabs and offices.”
Four fabs in Central New York will consume more water than Boise, Taiwan, Singapore, Japan, Virginia, and every Micron office in the world combined.
Per-fab, the numbers are equally difficult to reconcile with industry practice:
Intel Ocotillo, Arizona — 3 advanced-node fabs, ~14 MGD total, ~4.7 MGD per fab
Micron Clay, New York — 4 fabs projected, 48 MGD total, 12 MGD per fab
Per-fab ratio — Clay is 2.5× Intel’s advanced Arizona complex
Semiconductor manufacturing does not require more water in Onondaga County than in Maricopa County. The process chemistry is the same. The production targets are comparable. Published per-wafer water intensity benchmarks for modern memory fabrication are reasonably consistent across the industry. The question of why Clay’s design calls for this much water is not addressed in the 2023 DEIS, the 2025 Conceptual Design Engineering Report, the 144-page signed SPDES permit, the 200-page Responsiveness Summary, the SEQR Findings Statement, or the CLCPA Justification Statement. 363 pages of agency-reviewed documentation, and the anomalous water demand at the heart of the facility’s design receives no explanation.
The consequence of the anomaly is mathematical:
The SPDES permit regulates PFAS by concentration, measured in nanograms per liter. Concentration equals mass divided by volume. For any given mass of PFAS that Micron produces per day, doubling the effluent volume halves the concentration. Tripling it cuts the concentration by a third. Clay’s 12 MGD per-fab design, compared to Intel Arizona’s 4.7 MGD per fab, produces an effluent concentration approximately 2.5 times lower than an identical fab operating at Intel’s water demand would produce. The pollution entering the Oneida River, measured as a mass flux, is unchanged. The number on the permit is not.
The permit’s mixing zone analysis, on fact sheet page 13, confirms that dilution in the receiving water cannot compensate for this. The Oneida River’s 7-day low flow at USGS gage 04247000, approximately 800 feet downstream of the outfall, is 182.9 cubic feet per second — roughly 118 MGD. The 1-day low flow is 49.87 cfs, or approximately 32 MGD. At 1Q10 conditions — the worst-case design low flow DEC uses for acute toxicity analysis — the river’s flow is roughly equal to Micron’s Phase 4 discharge volume of 30.8 MGD. Under those conditions, the water flowing past the OCWA drinking water intake 1.5 miles downstream is, in equal parts, river water and Micron’s treated effluent.
The permit’s regulatory mixing zone dilution ratio for Phases 2 through 4 is 2:1, set by DEC based on its own mixing-zone model. That is not a typographical error. The permit applies the same 2:1 ratio for acute toxicity, chronic toxicity, and the “Human, Aesthetic, Wildlife” dilution factor. The fact sheet explains the constraint:
“Mixing is constrained by the existing outfall configuration and minimal effluent velocity. Based on the volumetrically available flow rate and the mixing zone model, a dilution of 2:1 was determined to be reasonable for Phases 2 through 4.” — SPDES Permit NY0030317, Fact Sheet, page 13
What a 2:1 mixing zone ratio means, in practice: whatever concentration of PFAS leaves the outfall is reduced to approximately one-third of that concentration at the edge of the regulatory mixing zone. At a semiconductor-industry average PFAS concentration — 840 ng/L, per the Semiconductor Industry Association’s own 2025 survey of fab effluent — the edge-of-mixing-zone concentration would be approximately 280 ng/L. That is 70 times the federal EPA drinking water MCL of 4 ng/L for PFOA and PFOS. The drinking water intake is 1.5 miles beyond the edge of the mixing zone.
The design of the facility makes the permit’s numerical limits easier to meet. That is not the same thing as the permit protecting the water.
ForeverChemicals CNY is not alleging that Micron designed the Clay facility with the specific intent of diluting its PFAS discharge to pass concentration-based permit limits. We have no internal Micron document establishing that intent, and we will not attribute one. What we observe is that the effect is mathematically certain, that it was knowable to every regulator who reviewed the permit package, and that it is not discussed, explained, or accounted for anywhere in the 363 pages of agency documentation DEC released on April 10, 2026. A permit premised on concentration-based limits, issued to a facility designed to use 2.5 times more water per fab than industry benchmarks support, requires at minimum an explanation. None is provided.
The SPDES permit is issued. The Title V air permit for Micron was issued March 31, 2026. The Basis of Design Report for the industrial treatment train was approved November 21, 2025. Three regulatory gates closed in five weeks.
The design-build contract for the Industrial Treatment Plant has not been awarded. The bond authorizing construction (estimated at $1.4 to $2.6 billion by Brown and Caldwell, the County’s engineer) has not been voted by the County Legislature. The Industrial Wastewater Discharge Permit from Onondaga County to Micron has not been drafted. The Onondaga Nation’s pretreatment-authority argument is unresolved on the record — and is now supported by the signed permit’s own text.
The permit becomes effective May 1, 2026. Under 6 NYCRR Part 621, the permittee’s thirty-day window to request an adjudicatory hearing expires on or about May 10, 2026. Third-party procedural paths exist under the same regulation and would require legal review to pursue.
ForeverChemicals CNY is transmitting a formal response letter to Governor Hochul, Commissioner Lefton, Division of Water Director Carol Lamb-LaFay, County Executive Ryan McMahon, and Regional Permit Administrator Kevin Balduzzi this week. That response will be posted here when transmitted.
The design-build contract has not been awarded. The bonds have not been issued. The Industrial Wastewater Discharge Permit to Micron has not been written. The public record is still being built — and the campaign needs you in it.
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