C&T Dirt Works LLP
New Iberia, LAIberia County
driveways, excavation, grading, land clearing, pond water management, trenching underground
10 years in business
Photo: George Bannister (CC BY 2.0) via Wikimedia Commons
Iberia Parish, LA Contractor directory
Excavation contractors in Iberia Parish, LA
4 verified excavating and site work contractors serving Iberia Parish.
County excavation guide
Ground conditions and project requirements in Iberia Parish
Use this local research to understand soil, seasonal constraints, permits, and jobsite logistics before choosing a contractor.
Skip to 4 contractorsSoil Regime ProfileEPA Ecoregion 73, 74, 34 (Mississippi Alluvial Plain, Mississippi Valley Loess Plains, Western Gulf Coastal Plain)
Louisiana Delta Alluvium, Prairie Terraces & Piney Woods
Dominant Soil Order: Vertisols / Alfisols / Ultisols / Histosols
Parent Material: Mississippi and Red River Alluvial Clay (Delta), Pleistocene Prairie Terraces, and Gulf Coastal Plain Sandy Sediments with Peat in the Coastal Marshes
Louisiana is the wettest digging in the continental states. The Mississippi Delta parishes (Baton Rouge to New Orleans north) are alluvial clay and silt: hydric soils on 40-70 percent of land, water tables within inches of grade most of the year, the strongest shrink-swell in the South (smectite clays that crack in dry season), and a drainage infrastructure (levees, pumps, canals) that every excavation touches. Foundation work rides on deep piles or slabs engineered for clay movement; septic systems are commonly aerobic units because conventional drainfields drown. The Pleistocene prairie terraces (Lafayette, Lake Charles) are gentler: claypan soils over old alluvium, perched water on the claypan, and the classic Cajun-prairie drainage ditch network. The Florida parishes and the piney woods east and south (Slidell, Hammond, DeRidder) are sandy and easy: low shrink-swell, fast percolation, conventional trenches standard, with wetlands in every low spot. The coastal marsh parishes add peat and organic muck. Frost is essentially absent; hurricane storm-surge and rainfall drive elevation and drainage decisions.
Geographic Footprint:Louisiana's parishes (New Orleans, Baton Rouge, Lafayette, Shreveport) run from Delta alluvial gumbo through prairie-terrace claypan to sandy piney woods: seasonal wet everywhere, high shrink-swell in the alluvium, and easy sand in the pine belt. Drainage and elevation are the state's defining excavation constraints.
Geotechnical Baseline
Physical Ground Conditions & Soil Properties
Shallow Bedrock (<50 in)
0.0%of county land area
Deep soil mantle; rock refusal rare for standard basement or trench cuts.
High Shrink-Swell Clay
34.0%expansive soil
Severe expansive clay; pad lime stabilization or undercut replacement typically required.
Median Water Table Depth
0inches from surface
Shallow water table; active dewatering or sumps needed for deep trenching.
Hydric / Wetland Soils
63.4%hydric coverage
Indicates poor natural drainage and potential jurisdictional wetland pockets.
Steep Terrain (Slope >15%)
0.0%of terrain
Predominantly gentle to rolling slopes suitable for wheeled earthmoving.
Septic Severe Limitations
85.1%severe rate
High rate of conventional drainfield limitations; engineered or drip systems often required.
Dominant Soil Textures:Silt loamClaySilty clay loam
Surface Stones / Boulders: 0.0% coverage
Compliance & Permitting
Earthwork Regulations & Permit Thresholds
Stormwater & Erosion Control
LDEQ LPDES LAR200000 (small construction general permit, 1 acre to less than 5 acres, no NOI or fee, SWPPP and completion report required) and LAR100000 (large construction, 5 acres or more, reissued effective Oct 1 2024).
Administers NPDES stormwater discharge coverage for land-disturbing construction activities.
State Threshold:1.00 Acre
Local Threshold:Follows state
Onsite Wastewater & Utilities
Iberia Parish Parish Health Unit
Jurisdiction over septic tank permits, soil evaluation perk tests, and drainfield sizing.
Housing on Septic:55.0%
Soil Evaluation:Site evaluation including percolation test or soil texture analysis under LAC 51 Part XIII
811 One-Call Requirements
Louisiana 811 (Louisiana One Call)
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
June
Peak precipitation window requiring sediment traps and soil aeration.
Supply Chain & Hazards
Logistics, Aggregate Sources & Geohazards
Aggregate & Material Supply
B & D Sand Pit
Nearest active quarry: 15.1 miles haul distance.(1 active crushed stone/sand operations within 50 miles).
Flood & Hazard Overlay
FEMA 100-Yr Flood:63.0%(100% NFHL digital map coverage)
NWI Wetlands:56.4%jurisdictional coverage
Karst Terrain & Sinkhole Risk: Low
0.0% of county underlain by soluble carbonate rock formations.
HUC8 Primary Watersheds:Bayou Teche, Atchafalaya, Vermilion
Public conservation land: 1.5% (USGS PAD-US).
Area-specific FAQ
Do I need to call before digging in Iberia Parish?
Yes. You should contact Louisiana One Call at least 2 working days before any digging so underground lines can be marked.
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Excavation contractors serving Iberia Parish
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