Power, water, air, and sound. Baseline before ground disturbance, continuous through operations. Every reading signed inside the sensor and anchored publicly, so a third party can verify it without trusting the operator and without trusting us.
Data centers cannot prove their carbon numbers. That is true, and it matters. It is not the argument that gets a project built.
Water, noise, and air are what stop projects, void rezonings, and generate lawsuits. In 2026 that stopped being a forecast and became a docket.
The problem in every one of those disputes is the same, and it is a measurement problem. When a neighbor's well goes bad, when the hum starts, when the air smells different, the operator has no defensible record of what conditions were like before the facility existed.
Without a before, there is no after. Causation becomes a battle of retained experts, and the operator, who chose the site and built the thing, loses the narrative by default.
| Matter | Location | Date | Claim |
|---|---|---|---|
| Haley v. X.AI Corp. | Southaven, MS | Jun 2026 | Nuisance. Gas turbine noise: high-pitched squealing, continuous roaring, low-frequency rumbling. |
| NAACP v. X.AI Corp. | Mississippi | Apr 2026 | Clean Air Act citizen suit over unpermitted turbines. |
| Valenzuela v. Alliance Cloud Services | Dowagiac, MI | May 2026 | Class action, continuous cooling system noise. |
| Montgomery v. DataOne USA LLC | Vineland, NJ | May 2026 | Cooling and generator noise. Voluntarily dismissed 19 June 2026. |
| Demers v. Digi Power X Inc. | N. Tonawanda, NY | Apr 2026 | Noise and vibration. |
| Pearson v. Port of Morrow | Oregon | Settled Mar 2026 | Nitrate groundwater contamination. $20.5M settlement. |
| Bd. of County Supervisors v. Oak Valley HOA | Prince William Cty, VA | Mar 2026 | Rezoning voided for inadequate public notice. |
| Citizens Concerned re Wolf Hollow v. Marathon Digital | Hood County, TX | Oct 2024 | Private nuisance. Survived motion to dismiss at the pleading stage. |
| Domain | Measures | Primary risk addressed | Instrument tier |
|---|---|---|---|
| Power and carbon | Per-rack kWh, measured PUE, hourly Scope 2, hourly carbon-free energy gap | Reporting, assurance, procurement exposure | Revenue grade · IEC 62053-22 Class 0.5S |
| Water | Withdrawal, discharge, consumption, quality, groundwater level and chemistry | Permitting, contamination claims, community trust | Flow ±0.5% · probes are screening tier |
| Air | PM, NO₂, O₃, CO, SO₂, VOC at fenceline and stacks, plus generator runtime | Clean Air Act compliance, citizen suits, nuisance | Supplemental tier + reference anchor |
| Acoustic | Broadband and one-third octave SPL, tonality, low-frequency and infrasound | Nuisance litigation, zoning conditions, setbacks | IEC 61672 Class 1 |
| Node type | Count | Placement logic |
|---|---|---|
| MWN-Acoustic | 6 to 10 | Boundary at each compass aspect, nearest residential receptors, two off-site controls |
| MWN-Air | 4 to 6 | Prevailing upwind and downwind, nearest receptors, planned generator yard |
| MWN-Water, surface | 2 to 4 | Planned intake and discharge, upstream and downstream of receiving water |
| MWN-Water, groundwater | 4 to 8 | Monitoring wells on site plus at least two off-site controls |
| Met mast | 1 | 10 m, feeding both air and acoustic interpretation |
| Gateway | 1 to 2 | LoRaWAN concentrator, cellular backhaul, no operator network dependency |
| Phase | Duration | Output |
|---|---|---|
| Siting and design | 2 to 4 wk | Node placement plan reviewed by acoustic and hydrogeologic consultants. Placement determines admissibility. |
| Well installation | 4 to 8 wk | Drilling, screening, development. Longest lead item, typically the critical path. |
| Deploy and commission | 1 to 2 wk | Install, calibrate, verify against reference, sign commissioning attestations |
| Baseline collection | Min 12 months | Full seasonal cycle. Anything shorter is attackable on the ground that it missed a season. |
| Baseline report | 2 wk | Statistical characterization with the signed dataset and verification instructions attached |
| Tier | Domains | Standing |
|---|---|---|
| Revenue and reference grade | Power, acoustic Class 1, flow | Billing, permit compliance, expert testimony |
| Regulatory adjacent | Continuous water quality probes | Screening and trend. Permit compliance usually still requires lab analysis of grab samples on a defined schedule. |
| Supplemental and informational | Fenceline air sensors | Trend detection, complaint response, community transparency. Not federal reference or equivalent methods. |
| Line | Range | Note |
|---|---|---|
| Hardware and installation, excluding wells | $200K to $300K | 8 acoustic, 5 air plus 1 reference anchor, 3 surface water, 6 groundwater, 1 met mast, 2 gateways |
| Well installation, six wells | $90K to $240K | Third-party pass-through. Frequently the largest single line and the critical path. |
| Twelve-month baseline SaaS | $12K to $18K | |
| Total pre-construction | $300K to $550K | |
| Operations, 1,000-rack facility | ~$1.5M + $200K/yr | MRAA-01 at scale, on top of roughly $15K to $20K/yr environmental recurring |