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Virginia Administrative Code
Title 9. Environment
Agency 25. State Water Control Board
Chapter 32. Virginia Pollution Abatement (VPA) Permit Regulation

9VAC25-32-410. Biosolids management plan.

A. The permit holder shall maintain and implement a Biosolids Management Plan that shall consist of three components:

1. The materials, including site booklets, developed and submitted at the time of permit application or permit modification adding a farm to the permit in accordance with 9VAC25-32-60 F;

2. Nutrient management plan developed for each site, prior to biosolids application; and

3. Operations and maintenance (O&M) manual, developed and submitted to the department within 90 days of the effective date of the permit.

B. The biosolids management plan and all of its components shall be incorporated as an enforceable part of the permit.

C. Nutrient management plan:

1. A nutrient management plan approved by the Department of Conservation and Recreation shall be required for application sites prior to department authorization under specific conditions, including but not limited to:

a. Sites operated by an owner or lessee of a confined animal feeding operation as defined in subsection A of § 62.1-44.17:1 of the Code of Virginia, or confined poultry feeding operation as defined in subsection A of § 62.1-44.17:1.1 of the Code of Virginia;

b. Sites where land application more frequently than once every three years at greater than 50% of the annual agronomic rate is proposed;

c. Mined or disturbed land sites where land application is proposed at greater than agronomic rates; and

d. Other sites based on site-specific conditions that increase the risk that land application may adversely impact state waters.

2. Where conditions at the land application site change so that it meets one or more of the specific conditions identified in subdivisions 1 a through d of this subsection, an approved nutrient management plan shall be submitted prior to any future land application at the site.

3. The nutrient management plan shall be available for review by the department at the land application site during biosolids land application.

4. Within 30 days after land application at the site has commenced, the permit holder shall provide a copy of the nutrient management plan to the farm operator of the site, the Department of Conservation and Recreation and the chief executive officer or designee for the local government unless they request in writing not to receive the nutrient management plan.

5. The nutrient management plan must be approved by the Department of Conservation and Recreation prior to land application for application sites where the soil test phosphorus levels exceed the values in Table 1 of this section. For purposes of approval, permittees should submit the nutrient management plan to the Department of Conservation and Recreation at least 30 days prior to the anticipated date of land application to ensure adequate time for the approval process.




Soil Test P (ppm)

VPI & SU Test (Mehlich I)*

Eastern Shore and Lower Coastal Plain


Middle and Upper Coastal Plain and Piedmont


Ridge and Valley


*If results are from another laboratory, the Department of Conservation and Recreation approved conversion factors must be used.

D. The O&M manual shall include at a minimum:

1. Equipment maintenance and calibration procedures and schedules;

2. Storage facility maintenance procedures and schedules;

3. Sampling schedules for:

a. Required monitoring; and

b. Operational control testing;

4. Sample collection, preservation, and analysis procedures, including laboratories and methods used; and

5. Instructions for recording and reporting of all monitoring activities.

Statutory Authority

§ 62.1-44.15 of the Code of Virginia.

Historical Notes

Derived from Virginia Register Volume 24, Issue 6, eff. January 1, 2008; amended, Virginia Register Volume 29, Issue 24, eff. September 1, 2013; Volume 39, Issue 5, eff. November 23, 2022.

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