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Murray County, OK Contractor directory
Excavation contractors in Murray County, OK
1 verified excavating and site work contractor serving Murray County.
County excavation guide
Ground conditions and project requirements in Murray County
Use this local research to understand soil, seasonal constraints, permits, and jobsite logistics before choosing a contractor.
Skip to 1 contractorSoil Regime ProfileEPA Ecoregion 27, 26, 28 (Central Great Plains, Southwestern Tablelands, Osage Plains)
Oklahoma Great Plains Caliche, Cross Timbers & Ozark Border
Dominant Soil Order: Mollisols / Vertisols / Ultisols / Inceptisols
Parent Material: Permian Redbeds with Caliche and Gypsum; Pennsylvanian Sandstone-Shale Saprolite; cherty Ozark residuum in the northeast
Oklahoma runs from High Plains caliche in the panhandle to Ozark chert in the northeast, and the excavation trades change across three belts. The western plains (Guymon, Woodward, Lawton west) sit on Permian red beds: red-brown sandy and clayey soils over caliche and gypsum, with shallow rock on 20-40 percent of the western counties, gypsum karst (sinkholes and dissolution) in the Blaine formation belt, and the state's high shrink-swell clays (5 percent average) that make foundation movement the standard design consideration. The Cross Timbers and central counties (Oklahoma City, Tulsa west) are sandstone-shale uplands: diggable saprolite, moderate slopes, shallow sandstone ledges in places. The northeastern Ozark border (Tulsa northeast) adds cherty residuum and karst. Slope is modest except in the Arbuckles, Wichita Mountains, and the eastern hills. Hydric soils are rare outside the river bottoms and the wetlands of the east. Tornado and hail exposure shape utility design more than soil. Frost is shallow (mostly under 10 inches).
Geographic Footprint:Oklahoma's counties (Oklahoma City, Tulsa, Lawton, Enid) run from caliche-and-gypsum plains to sandstone uplands to cherty Ozark border: the recurring site factors are caliche refusal, gypsum karst, and the state's high shrink-swell clays. Frost depth is negligible.
Geotechnical Baseline
Physical Ground Conditions & Soil Properties
Shallow Bedrock (<50 in)
42.3%of county land area
High likelihood of bedrock refusal; hammer / ripper required for deep utilities.
High Shrink-Swell Clay
24.9%expansive soil
Moderate shrink-swell; verify plasticity index on structural fill.
Median Water Table Depth
42inches from surface
Moderate depth; seasonal wet perched water tables possible in spring.
Hydric / Wetland Soils
0.1%hydric coverage
Indicates poor natural drainage and potential jurisdictional wetland pockets.
Steep Terrain (Slope >15%)
33.5%of terrain
Mountain/hilly terrain; terracing, benching, and tracked haulers frequent.
Septic Severe Limitations
89.8%severe rate
High rate of conventional drainfield limitations; engineered or drip systems often required.
Dominant Soil Textures:LoamClaySilty clay loam
Surface Stones / Boulders: 44.3% coverage
Compliance & Permitting
Earthwork Regulations & Permit Thresholds
Stormwater & Erosion Control
Oklahoma DEQ OKR10 General Permit for Stormwater Discharges from Construction Activities (issued Oct 18, 2022, modified 2023, expires midnight Oct 17, 2027). Applies to work disturbing one acre or more, or less than one acre if part of a larger common plan of development or sale. SWP3 and NOI required before ground is broken. Excludes Indian Country and oil and gas / agricultural construction.
Administers NPDES stormwater discharge coverage for land-disturbing construction activities.
State Threshold:1.00 Acre
Local Threshold:Follows state
Onsite Wastewater & Utilities
Oklahoma DEQ Local Office
Jurisdiction over septic tank permits, soil evaluation perk tests, and drainfield sizing.
Housing on Septic:55.0%
Soil Evaluation:Soil test by licensed professional or DEQ specialist, results on DEQ Form 641-581; percolation test for conventional fields, soil profile method (3 holes in dispersal area) for other systems
811 One-Call Requirements
OKIE811 (Oklahoma One-Call System)
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
May, June, September
Peak precipitation window requiring sediment traps and soil aeration.
Supply Chain & Hazards
Logistics, Aggregate Sources & Geohazards
Aggregate & Material Supply
Davis Stone Quarry
Nearest active quarry: 10.1 miles haul distance.(15 active crushed stone/sand operations within 50 miles).
Flood & Hazard Overlay
FEMA 100-Yr Flood:11.6%(100% NFHL digital map coverage)
NWI Wetlands:6.8%jurisdictional coverage
Karst Terrain & Sinkhole Risk: Low
38.8% of county underlain by soluble carbonate rock formations.
HUC8 Primary Watersheds:Lower Canadian-Walnut, Middle Washita, Lower Washita, Blue
Public conservation land: 7.4% (USGS PAD-US).
Area-specific FAQ
Do I need to call before digging in Murray County?
Yes. You should contact Oklahoma 811 at least 2 working days before any digging so underground lines can be marked.
How deep do footings need to be in Oklahoma?
In Oklahoma, footings typically need to extend below the frost line, which is around 24 inches here. A local contractor will confirm the code requirement for your site.
Verified local listings
Excavation contractors serving Murray County
1 verified listing