Has Iron Mountain had environmental violations?

As of the latest EPA ECHO sync, no enforcement actions are on record for Iron Mountain.

Where is Iron Mountain located?

Iron Mountain is in Prince William County, VA.

Permittedhyperscale

Iron Mountain

Q: What do data center tax breaks cost in Virginia?

Virginia reported $1B in Data Center Retail Sales and Use Tax Exemption (Va. Code § 58.1-609.3(18)) for FY2024 (Virginia Joint Legislative Audit and Review Commission (JLARC) / Weldon Cooper Center). That is a statewide program figure, not attributable to one site.

Prince William County, VA

Source: Primary source

Iron Mountain is a permitted data center in Prince William County, VA. DataCentersExposed has documented a 1,953,604 sq ft footprint at this site.

Reporting by Eric Keller · Updated Aug 29, 2026

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Campaign · Approved

Take action

Prince William, Virginia

supporters

It was approved. The fight shifts to enforceable conditions, monitoring, and the next one.

Your action kit

Sourced arguments and ready-to-send letters — every figure links to a primary record. Edit to add your own story.

Process

Demand a full, public review — not a rubber stamp.

Ask for an independent noise study, a water-and-power impact assessment, enforceable conditions (setbacks, hours, cooling type), and that the record stays open for written comment. Procedural shortcuts have voided approvals elsewhere.

Public comment (editable)

Edit freely before sending — it's a starting point. Add your own story; personal comments carry the most weight.

Records / FOIA request

Public Records Request

To the records custodian for Prince William County, VA,

Under the applicable public-records law, I request copies of the following records concerning the data-center project known as "Iron Mountain":

1. The complete application, including any rezoning, special-use/conditional-use permit, or site-plan submissions and all exhibits.
2. All staff reports, analyses, and recommendations.
3. Any traffic, noise, water-use, stormwater, or utility/load studies submitted or commissioned.
4. Any development agreement, proffers, or tax-incentive/abatement agreements and their term sheets.
5. All correspondence between the applicant (or its agents) and county/city staff or elected officials regarding this project.
6. Notices of public hearings and proof of required public notice.

I request these in electronic form where available. If any portion is withheld, please cite the specific exemption. If fees will exceed $25, please contact me first.

Thank you,
[Your name]
[Your email / address]

Edit freely before sending — it's a starting point. Add your own story; personal comments carry the most weight.

Join the campaign

Add your name and we'll email you before every hearing, with what to say and where to show up.

Neighbors taking a stand

Be the first to say why this matters. Public notes appear here to show officials the strength of local feeling.

Real parent

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Operator

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Est. capacity

~390-800 MW

Footprint

1,953,604 sq ft

Interconnection

~175 MW

Utility

Northern Virginia Elec Coop

Grid

PJM

Attribution & capacity confidence:highprimary source

Overview

source: link

Data-center campus in Prince William County, Virginia (status: permitted). Case(s): REZ2021-00022. Source: PWC County Mapper Data Center Campuses layer.

Grid & water — why here

source: HIFLD · EPA

Nearest substation

0.5 mi

Unknown156824 · 230 kV

Transmission line

0.4 mi

230 kV line

Municipal water

Served

Pwcsa - West

The closest existing grid infrastructure and the municipal water system this location sits in — the same constraints the buildout model screens on (it won't site a campus more than ~2 km from a substation or ~5 km from municipal water). Distances are straight-line to public HIFLD/EPA features, not a metered connection.

In the news

source: Google News

Tax breaks & subsidies

source: Good Jobs First / GASB 77

No per-deal tax break is linked to this site yet. No state discloses the recipient of a data-center abatement at the facility level, so per-site deals are rare in the public record. If you have a development agreement or board resolution for this site, send it to us.

Statewide cost of this incentive

Virginia reported $1B in Data Center Retail Sales and Use Tax Exemption (Va. Code § 58.1-609.3(18)) for FY2024 (Virginia Joint Legislative Audit and Review Commission (JLARC) / Weldon Cooper Center). Program-wide, not attributable to this site.

source · All Virginia subsidies →

Water use

No public record of this facility's water use. We check state withdrawal reporting for self-supplied sites; municipally supplied sites only become visible through a public-records request to the local water utility — a per-facility request tool is coming. If you have a utility document for this site, send it to us.

EPA permits & violations

source: EPA ECHO

No reported violations as of last sync.

What this site costs the grid

source: PJM RPM auction reports

Dominion (Virginia / NC) · 2027/28 auction

$333 /MW-day

Peaked at $444/MW-day in 2025/26 — 1.65× the rest of PJM

PJM's capacity auction sets a $/MW-day price that utilities pass on to every household and business in the zone. This site sits in PJM's DOM pricing zone, where soaring data-center demand is a documented driver. See the full zone-by-zone breakdown →

This site's capacity-market cost (estimated)

$47.4M to $97.2M/yr

An estimated ~390 to 800 MW of load at the zone's $333/MW-day, annualized — the capacity charge a load this size carries at the current auction price. Estimated from the building footprint at 200 to 400 W/ft² (the typical range for modern data centers). A rough order-of-magnitude figure, not a metered or permitted capacity.

Separately, a typical home in this zone pays an estimated $4 to $10/mo more on the capacity portion of its bill that PJM's market monitor attributes to data-center demand. See your address's full impact →

Nearest school

source: HIFLD / NCES

The nearest public school, George P. Mullen Elementary in Manassas, is 1.2 mi from this site (751 students).

Schools are sensitive receptors for the noise, backup-generator exhaust, and traffic a large data center brings. Straight-line distance to the nearest public school (HIFLD/NCES, US public schools only).

Hearings timeline

No public-hearing records linked to this site yet. We surface planning-commission and board-of-supervisors dates when a record names a facility. If you know of a hearing on this site, tell us.

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