Excavation contractor jobsite in Mohave County, AZ

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Mohave County, AZ Contractor directory

Excavation contractors in Mohave County, AZ

29 verified excavating and site work contractors serving Mohave County.

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County excavation guide

Ground conditions and project requirements in Mohave County

Use this local research to understand soil, seasonal constraints, permits, and jobsite logistics before choosing a contractor.

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Soil Regime ProfileEPA Ecoregion 23 (Arizona/New Mexico Mountains), 22 (Colorado Plateaus edge)

Mogollon Rim & Central Arizona Mountain Slopes

Dominant Soil Order: Mollisols / Entisols / Aridisols
Parent Material: Granitic, Volcanic, and Metamorphic Colluvium and Residuum on Mountain Slopes, with Stream Terrace Alluvium

The Mogollon Rim and central mountain counties (Gila, Yavapai, Graham, Greenlee, Mohave) are steep, rocky ground. SSURGO mapping shows rock outcrop and Tours and Lonti series, with mountain slopes averaging above 10 percent. Rock outcrop and shallow bedrock are common, so most foundation and trench work meets hard rock. Steep cut slopes ravel and slide once the cover is removed. Stream terrace alluvium in the valleys is easier digging, and it carries a shallow water table in places. Many lots sit on shallow soils over rock, so the soil layer is thin and holds little water. The steep ground limits where heavy loads can sit, and the rock outcrop breaks up the surfaces that remain. Where the rock is exposed, the surface is hard and offers little cover, and the steep faces expose broken rock along every cut.

Geographic Footprint:Mogollon Rim and central mountains (Gila, Yavapai, Graham, Greenlee, Mohave)
Geotechnical Baseline

Physical Ground Conditions & Soil Properties

Shallow Bedrock (<50 in)
49.7%of county land area

High likelihood of bedrock refusal; hammer / ripper required for deep utilities.

High Shrink-Swell Clay
0.6%expansive soil

Low volumetric expansion risk in native subgrade.

Hydric / Wetland Soils
0.0%hydric coverage

Indicates poor natural drainage and potential jurisdictional wetland pockets.

Steep Terrain (Slope >15%)
53.2%of terrain

Mountain/hilly terrain; terracing, benching, and tracked haulers frequent.

Septic Severe Limitations
64.0%severe rate

High rate of conventional drainfield limitations; engineered or drip systems often required.

Dominant Soil Textures:LoamSilt loamFine sandy loam
Surface Stones / Boulders: 32.0% coverage
Compliance & Permitting

Earthwork Regulations & Permit Thresholds

Stormwater & Erosion Control
ADEQ AZPDES Construction General Permit AZG2025-001 (effective 2025-08-29, replaces AZG2020-001); 1 or more acres or part of common plan reaching 1 acre; NOI via myDEQ, SWPPP first

Administers NPDES stormwater discharge coverage for land-disturbing construction activities.

State Threshold:1.00 Acre
Local Threshold:Follows state
Onsite Wastewater & Utilities
Mohave County Environmental Services

Jurisdiction over septic tank permits, soil evaluation perk tests, and drainfield sizing.

Housing on Septic:55.0%
Soil Evaluation:Site and soils evaluation before application by county staff or Arizona-registered engineer, geologist or sanitarian; varies by county
811 One-Call Requirements
Arizona 811 (Blue Stake)

Mandatory notice window: 48 hours prior to mechanized earthwork (excluding weekends and legal holidays).

Licensing & Clearing Permits
Weather & Ecology

Seasonal Constraints & Clearing Windows

Frozen Ground Days
0days / year

Typical days with sub-freezing soil conditions affecting digging.

Wet Season Months
January, February, March

Peak precipitation window requiring sediment traps and soil aeration.

Supply Chain & Hazards

Logistics, Aggregate Sources & Geohazards

Aggregate & Material Supply
Hualapai Pit

Nearest active quarry: 17.6 miles haul distance.(9 active crushed stone/sand operations within 50 miles).

Flood & Hazard Overlay
FEMA 100-Yr Flood:4.5%(100% NFHL digital map coverage)
NWI Wetlands:0.0%jurisdictional coverage
Karst Terrain & Sinkhole Risk: Low

0.0% of county underlain by soluble carbonate rock formations.

HUC8 Primary Watersheds:Piute Wash, Southern Mojave, Ivanpah-Pahrump Valleys, Grand Canyon, Red Lake, Detrital Wash
Public conservation land: 0.0% (USGS PAD-US).

Area-specific FAQ

Do I need to call before digging in Mohave County?

Yes. You should contact Arizona 811 at least 2 working days before any digging so underground lines can be marked.

Verified local listings

Excavation contractors serving Mohave County

29 verified listings (showing first 20)

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