★Land development plan sets
LIVIC Civil, for the developer · 2025 to 2026The site plans for the 16-building compound, campus by campus, the latest complete version of each phase.
Project documents
See what they're building.
The official documents behind PAX-1, in one place: the plans, the reviews, the permits, the findings. Every file here is yours to read or download.
56 documents across 5 categories Read first
The plans#
What the developer filed to describe and build the project.
Final major subdivision plan
LIVIC Civil, for the developer · February 10, 2026The recorded subdivision that splits the PAX-1 site into its lots.
Master phasing plan
Carlisle Development Partners · July 24, 2025The Project Bolt buildout sequence the developer later points to for vested rights.
★PAX-1 Noise Study
Kimley-Horn, for the developer · April 13, 2026The developer's own noise model of the campus. It checks the Township's 70 dBA limit, which sets no low-frequency limit, and lists its low-frequency figures for information only.
Traffic Impact Study
For the developer · June 30, 2025The developer's projection of construction and operations traffic on local roads.
Agency reviews#
What independent reviewers said when they looked at the plans.
Cumberland County Planning Commission reviews
Cumberland County Planning Commission · 2025 to 2026The county's reviews across the overlay, the subdivision, and each phase of land development.
Township engineer review letters
Herbert, Rowland & Grubic (HRG) · 2025 to 2026The Township engineer's comments on the plans, phase by phase, including the sound study.
Zoning and approvals#
What the Township adopted, and on what terms.
★Ordinance 3-2025: the Data Center Overlay
Middlesex Township Board of Supervisors · May 30, 2025The zoning the Supervisors adopted 35 days after the April 25 request.
Ordinance 7-2025: the comprehensive rezoning
Middlesex Township Board of Supervisors · September 3, 2025The zoning rewrite that folded the overlay in as Section 2.18 and relabeled the land MU-1 Mixed-Use Neighborhood.
Conditional approvals
Middlesex Township Board of Supervisors · 2025 to 2026The Supervisors' conditional approvals, granted with dozens of waivers across the subdivision and each phase. The Phase 1B approval is under appeal in county court; on September 22, 2026 the court dismissed the appeal of the subdivision and Phase 1A approvals.
Developer waiver requests
Carlisle Development Partners · 2025 to 2026The Township standards the developer asked the Supervisors to set aside, phase by phase.
Permits and compliance#
The permits the project builds under, and the enforcement record.
★NPDES stormwater amendments
Cumberland County Conservation District / PA DEP · 2025The residential-era stormwater permit amended into a data-center permit, the permit we appealed to the Environmental Hearing Board.
GP-5 / stream-crossing permits
PA DEP · 2025The general permits for the Country Club Road water-main stream crossing.
DEP enforcement
PA DEP · 2025 to 2026The wetland violation notice and the blasting airblast exceedance.
Conservation District inspection reports
Cumberland County Conservation District · 2025 and 2026The erosion-control inspections at the Cumberland Knoll site in 2025, and the August 2026 inspection under the data center permit that recorded two more violations.
Water and sewer capacity request
Carlisle Development Partners · September 3, 2025The developer asks the water authority for a share of the 910,000 gallons a day of spare capacity it then had, and for the water and sewer capacity once reserved for homes planned on the land. It names no amount. By January 2026, the authority had allocated 400,000 gallons a day.
DEP sewage-planning notes
PA DEP · January 26, 2026DEP's meeting notes requiring full Act 537 sewage-facilities planning for the campus.
Impact findings#
What outside agencies concluded about the project's effects.
★SHPO adverse effect determination for the Appalachian Trail
PA State Historic Preservation Office · January to March 2026The state found the project will have an adverse effect on the Appalachian Trail viewshed, rejecting the developer's finding of no adverse effect, then rejected its plan to plant trees along the Trail.
Appalachian Trail Conservancy letters
Appalachian Trail Conservancy · January to February 2026The Trail conservancy's concern letters about the compound a third of a mile from the Trail.
National Park Service comment letter
NPS, Appalachian National Scenic Trail · December 18, 2025The federal trail office's comments on the project's viewshed, noise, and light effects.
Army Corps jurisdictional determination
U.S. Army Corps of Engineers · February 6, 2025The federal finding that jurisdictional waters and wetlands may be present on the site.
SRBC consumptive-use confirmation
Susquehanna River Basin Commission · May 28, 2026SRBC's confirmation that a consumptive-use approval is required and, as of that date, none had been filed for PAX-1.
Public Records and Intellectual Property Notice
Source & Purpose: The documents on this page are public records. Stop PAX-1 obtained them lawfully, through requests under Pennsylvania’s Right-to-Know Law and from the public filings, postings, and recorded plans of the agencies involved. They are published here strictly for public transparency, review, and informational purposes.
Copyright & Intellectual Property: Stop PAX-1 claims no ownership of these documents. Each one remains the property of its author, who retains full copyright, trademark, and all other proprietary rights in it. The display of these documents under public disclosure laws does not grant any license or right to reproduce, redistribute, modify, or commercially exploit this material without the express written consent of the copyright holder.
No Endorsement or Professional Liability: These plans are provided “as-is” for historical and public reference only. They do not constitute engineering advice, and their inclusion does not imply an endorsement by Stop PAX-1 or by any firm or agency named. These plans may not be current, complete, or suitable for any construction, development, or professional application. Anyone using or relying on these documents does so entirely at their own risk.
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