Notable Projects


Williams Transco-Spread 18 (Williamsport, PA)

13.6 miles of SCC Hydrostatic testing combined with 6,852 LF of take up and relay of 24” pipe on Leidy Line “B”. Project consisted of (11) pipe replacements, multiple creek crossings, difficult terrain, two separate caliper pig runs, drying of the line and critical tie-in dates.

UGI Energy Services-Sunbury Pipeline (Montour, PA)

Removal and disposal of 34.38 miles of silt sock erosion control devices. Project included hauling and disposal of over 450,000 LF of sock, ditch line subsidence repair, chain link fencing around valves, gravel surfacing and restoration of disturbed areas.

Energy Transfer Slip Repairs (Canton, PA)

Stabilization and repair of slip on hillside off of Canton lateral pipeline. Project consisted of creating access to steep slope, importing rip rap to fill slip and restoration of disturbed areas.

Williams Transco Station 520 Valve Replacement (Jersey Shore, PA)

Soft excavate, removal and replacement of 24” valve along with various smaller diameter fuel gas lines and bypass piping inside an active compressor station. Project required The Hillis Group to work simultaneously with other contractors and coordinate our efforts to meet strict outage dates.

Williams Transco Leidy Line “B” Replacement (Wind Gap, PA )

The Hillis Group, LLC was contracted to perform verification digs at the Wind Gap Hill. Analysis of pipe required The Hillis Group to immediately remove and replace 800 LF of 24” pipe on 45 degree hillside. Working with our client The Hillis Group was successful in replacing hillside section while also meeting multiple outage dates. Project also consisted of hydrostatic testing, asbestos abatement and extreme terrain conditions requiring winch tractors.

Williams Transco Leidy Line B Recoats (Blakeslee, PA)

Excavate, expose and prepare 24” pipe for integrity analysis. Project consisted of coating removal, sandblasting, recoating, backfill and restoration of 4,000 LF of line pipe through wetlands and rocky terrain.


Henkels & McCoy NY Bay Expansion Station 207 HP Upgrade (Sayreville, NJ)

Civil construction services to increase horsepower at an active compressor station. Project consisted of all clearing services, site grading, storm piping, detention basins, concrete foundations, gravel surfacing, site paving and restoration.

Williams Transco Constitution Spread A Tree Clearing (Susquehanna, PA)

The Hillis Group was contracted to remove and dispose of all felled trees for a 26.4 mile ROW including: Building and maintaining all temporary and permanent access roads, installing, maintaining and removing all ECD’s, grading right of way for access, grinding and removal of tree debris, regrading of right of way and permanent restoration.


Williams Transco Recoat Leidy “B” Rupture (Lycoming and Columbia Counties, PA)

The Hillis Group was contracted to excavate, remove coating, sandblast, recoat, backfill and restore 5,600 LF of 24” pipe. Analysis of pipe required over (40) cut outs and replacements of existing line.

Williams Transco Franklin & Dorrance Loops (Monroe County, PA)

The Hillis Group was selected to complete the Franklin and Dorrance loops. Project consisted of completing launcher/receiver sites, above grade painting, installation and testing of 2” power gas lines, chain link fencing, gravel surfacing, redistribution of topsoil, right of way grading and permanent restoration services.