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Montgomery County, VA Environmental Rules: Stormwater Management (2026)

Significant Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Regulation threshold
10,000 sq ft or more disturbed
Full technical criteria threshold
1 acre or more disturbed
Approval required before work
Land-disturbance approval
Application review time
15 days complete / 60 days to act
Civil penalty (1 acre+)
Up to $32,500 per violation
Misdemeanor penalty
Up to 12 months jail, $2,500-$32,500 fine

Summary

Montgomery County runs its own Virginia Erosion and Stormwater Management Program, and no one may disturb land until the county issues land-disturbance approval. Projects disturbing 10,000 square feet or more must meet the state's technical erosion-control criteria.

These county ordinances apply to unincorporated areas of Montgomery County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

(1) Land-disturbing activity that disturbs 10,000 square feet or more, is less than one acre and not part of a common plan of development or sale, is subject to the soil erosion and sediment control criteria, techniques, and methods defined in Article 2 (9VAC25-875-540 et seq.) of Part V of the Virginia Erosion and Stormwater Management Regulation (Regulation). ... Except as provided herein, no person may engage in any land-disturbing activity until land disturbance approval has been issued by the County in accordance with the provisions of this ordinance and the Regulation.

Full Breakdown

Sec 8-72 establishes the county's Virginia Erosion and Stormwater Management Program under Va. 15:27 and designates the county administrator or a designee as its Administrator. Sec 8-73 sets the disturbance thresholds that trigger regulation: 10,000 square feet or more (but under an acre and not part of a common plan of development) is subject to the soil erosion and sediment control criteria in the state regulation, while an acre or more, or a smaller parcel that is part of a larger common plan disturbing an acre or more, is also subject to the water quantity and quality technical criteria.

Sec 8-76 states the core prohibition: no person may engage in land-disturbing activity until the county has issued land-disturbance approval, subject to listed exemptions such as home gardening and landscaping, minor utility connection work, septic line repair, and bona fide agricultural clearing. Sec 8-74 requires an applicant to submit a soil erosion control and stormwater management plan, or a qualifying agreement in lieu of a plan, and the name of a certified Responsible Land Disturber, before starting work. Sec 8-75 gives the county 15 days to determine an application complete and 60 days to act on it once complete.

Sec 8-86 backs the program with civil penalties reaching $32,500 per violation for one-acre-plus disturbances and up to $5,000 per violation (capped at $50,000) for smaller regulated sites, plus a misdemeanor penalty of up to 12 months in jail and a $2,500 to $32,500 fine for willful or negligent violations.

Violations & Fines

Sec 8-86 makes a land-disturbing-activity violation on a site of an acre or more punishable by a civil penalty of up to $32,500 per violation, with each day of violation a separate offense. A regulated site between 10,000 square feet and an acre faces up to $5,000 per violation, capped at $50,000 total. A willful or negligent violation of the ordinance, an administrator's order, a permit condition or a court order is a misdemeanor punishable by up to 12 months in jail and a fine of $2,500 to $32,500, or both. The county administrator can also issue a stop-work order and, in an emergency threatening water quality, an immediate cease order without advance notice.

Frequently Asked Questions

Do I need county approval before grading a lot in Montgomery County, VA?
Yes, if the disturbance reaches 10,000 square feet. Sec 8-76 bars any land-disturbing activity until the county issues land-disturbance approval, and Sec 8-73 subjects sites of 10,000 square feet or more to the state's erosion-control criteria.
What is exempt from Montgomery County's stormwater permit requirement?
Sec 8-76 exempts minor activities such as home gardening and individual landscaping, minor utility service connections, septic line repair outside a larger building plan, installing fence or utility posts, and bona fide agricultural clearing, among other listed categories.
How much can a stormwater violation cost in Montgomery County?
Sec 8-86 sets civil penalties up to $32,500 per violation for disturbances of an acre or more, up to $5,000 per violation (capped at $50,000) for smaller regulated sites, and a misdemeanor penalty of up to 12 months in jail plus a $2,500 to $32,500 fine for willful violations.

Sources & Official References

Other rules in Montgomery County

All Montgomery County rules

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