Complete civil packages for utility solar in La Paz County, Arizona: clearing, mass grading, access roads, collection trenching, SWPPP, fencing, and substation civil.
Backwell is a civil site work general contractor serving utility solar EPCs building in La Paz County, Arizona. We contract the complete civil package under one agreement, with Backwell superintendents and lead operators on site.
La Paz County is a federal land solar corridor, with large BLM right of way projects tied to the Ten West Link 500 kV transmission line and the Cielo Azul switching station. BLM approved the 600 MW Jove Solar Project on roughly 3,495 acres of public land plus 38 acres of county land, and BLM has described an average construction workforce near 300 with a peak around 600. Projects here are large single site earthwork packages on undeveloped desert. Federal land siting means NEPA conditions, cultural and biological monitoring, and BLM stipulations ride along with the civil scope.
Publicly reported utility-scale solar in and around La Paz County:
Project details come from public filings and reporting and are listed to show where the work is. Backwell is not affiliated with these projects or their developers.
Sparsely settled Sonoran desert between the Colorado River and the Harquahala and Harcuvar Mountains, made up of broad valleys, the Ranegras Plain, La Posa Plain, Butler Valley, McMullen Valley and Parker Valley, separated by rugged, low ranges including the Plomosa, Dome Rock, New Water and Kofa Mountains. Valley floors carry deep basin fill and desert pavement fan surfaces with Carrizo, Gunsight, Cristobal, Rositas and Chuckawalla type soils: gravelly, strongly calcareous, with varnished pavement over calcic and in places petrocalcic horizons. The Parker Valley along the Colorado is a different animal, deep irrigated river alluvium with silt and clay textures and shallow groundwater. Drainage is ephemeral throughout except the Colorado itself, but the fan systems are broad, unconfined and distributary, and Tyson Wash and the Bouse Wash system move a lot of water in a short time.
Vegetation clearing is light, but ironwood, palo verde and saguaro salvage plus the widespread BLM land status mean the environmental clearance drives the schedule, not the dozer. Fan gravels are excellent structural material and access roads can often be built from onsite pit run, which is the biggest single cost advantage of working here. The offsetting problems are caliche and desert pavement: the pavement layer is a permit condition to protect and restore, and the calcic and petrocalcic horizons are what will surprise a pile crew, so run a refusal test program early. Trenching in cemented gravel is slow and hard on equipment, so budget rock trenching or blasting on the upper fans. Erosion control is about unconfined flash flow across long, flat fan surfaces: use armored low water crossings, oversized cross culverts, and level spreaders rather than trying to concentrate flow, because concentrating flow on a fan is how you lose an access road.
We price the package as one scope under one contract, so the EPC has a single point of responsibility for the civil critical path instead of managing separate clearing, earthwork, and utility subcontracts.
Backwell superintendents, project managers, and lead operators run every site. We mobilize company equipment for the core scope and scale each project with leased production fleets, qualified regional subcontractors, and agency-placed field staff, all under Backwell supervision and a single contract.
Contractor licensing. Yes. Arizona requires a contractor license issued by the Arizona Registrar of Contractors (ROC). For commercial civil sitework the relevant classification is the commercial A General Engineering license, which covers fixed works, streets and roads, power and utility plants and related infrastructure, and which also carries the scopes of the A-4 through A-19 subclassifications including A-5, excavating, grading and oil surfacing. A contractor may alternatively hold a specific A subclassification such as A-5 rather than the full A. Licensure requires documented trade experience, passing the Business Management exam and the applicable trade exam, and a license bond.
Construction stormwater. AZPDES Construction General Permit (CGP) for Stormwater, issued by the Arizona Department of Environmental Quality (ADEQ). Coverage is required for construction disturbing one acre or more, or less than one acre if part of a larger common plan of development or sale, and it also covers temporary concrete, asphalt and material plants set up exclusively for the permitted project. The operator files a Notice of Intent with ADEQ certifying that a Stormwater Pollution Prevention Plan has been developed and will be followed. Backwell carries the SWPPP scope, installs and maintains the controls, keeps the inspection log, and closes the permit out with final stabilization.
Prevailing wage. Federal Davis-Bacon prevailing wage and apprenticeship requirements apply through the Inflation Reduction Act to projects of 1 MW and larger that claim the full investment or production tax credit, so certified payroll is standard on utility-scale solar in Arizona. On top of that, Arizona has no state prevailing wage law for state or locally funded public works, and Arizona statute preempts local governments from adopting their own prevailing wage ordinances. In practice the wage determination governing an Arizona solar site comes from the federal IRA requirement or from the owner or EPC contract, not from a state schedule. Davis-Bacon also applies directly on federally funded or federally assisted work. For projects claiming the full ITC or PTC, Backwell produces Davis-Bacon certified payroll, pays the applicable wage determination, and supports apprenticeship labor-hour compliance.
All Arizona solar civil work or the national utility solar civil page.
Send plans, a scope of work, and the schedule through the form below or call (315) 400-2654. We review the civil package, walk the site if it is at that stage, and return a scoped proposal with a schedule of values, stated fill allowances, and unit rates for overages. A one-page capability statement is available for prequalification files.
Plans, scope, and schedule reviewed and answered promptly.
Reply in hours, not days.