Grading and drainage in Casa Grande

Grading sets how water moves across a lot: away from the house, off a pad, into a basin or along a swale. On larger parcels around Casa Grande, it can also trigger a state stormwater permit.

ADEQ's Construction General Permit

The 2025 Construction General Permit (AZG2025-001), in effect since August 29, 2025, covers stormwater discharges to protected surface waters or a municipal storm sewer system from construction that disturbs 1 acre or more, or a smaller site that's part of a larger common plan that will. The steps:

1. Write the SWPPP.ADEQ says the stormwater pollution prevention plan must be done before the Notice of Intent.
2. File the NOI.Submitted through ADEQ's myDEQ portal.
3. Pay the fees.Application fees depend on acres disturbed, with annual fees in the anniversary month.

Dust

Pinal County wants a site permit application, site plan and dust control plan for development of 0.1 acre or more before construction begins.

Costs

Angi's Phoenix-area guide, the nearest published metro figures, lists grading and leveling at $415 to $6,720, leveling at $5 to $15 per cubic yard and hauling at $10 to $30 per cubic yard. Angi's national guide adds land surveys at $400 to $550 and soil testing at $700 to $2,200.

Check the ground

Earth fissures can act as a conduit for runoff, and monsoon rain can quickly widen them, per the Arizona Geological Survey. Before shaping drainage on a parcel, check for mapped fissures nearby. See earth fissures.