OAR 340-050-0065
Best Management Practices for Site Selection and the Use and Application of Bulk Biosolids and Domestic Septage: Use Limitations

(1)

The quantity of bulk biosolids or domestic septage applied to any Department authorized land spreading sites shall not exceed the agronomic rate for the particular cultivar grown. Best management practices are recommended where exceptional quality biosolids are land applied.

(2)

Where bulk biosolids and domestic septage are applied for agricultural use, nitrogen requirements for particular crops can be obtained from the Oregon State University Extension Service.

(3)

Biosolids and domestic septage shall be applied at rates and methods which prevent the occurrence of runoff, erosion, leaching, and nuisance conditions, or the likelihood of groundwater contamination.

(4)

Controlled access to bulk Class B domestic biosolids and domestic septage land application sites is required for a minimum of 12 months following surface application of solids. Access control is assumed on rural private land.

(5)

As a general rule, crops grown for direct human consumption (fresh market fruits and vegetables) should not be planted for at least 14 months after bulk Class B biosolids or domestic septage application. If the edible parts will not be in contact with the Class B biosolids or domestic septage amended soil, or if the crop is to be treated or processed prior to marketing such that pathogen contamination is not a concern, this requirement may be waived for root crops pursuant to § 503.32(b)(5). No time restrictions are required where Class A biosolids derived products are land applied to sites used for the cultivation of fresh market fruits or vegetables.

(6)

Grazing animals should not be allowed on pasture or forage nor should livestock feed crops be harvested where bulk Class B biosolids or domestic septage have been applied for a minimum of 30 days after application.

(7)

Exceptional Quality biosolids and biosolids derived products may be used on indoor and outdoor ornamental plants, shrubs, trees, home gardens and lawns, and high public contact areas without restricting public access.

Source: Rule 340-050-0065 — Best Management Practices for Site Selection and the Use and Application of Bulk Biosolids and Domestic Septage: Use Limitations, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=340-050-0065.

Last Updated

Jun. 8, 2021

Rule 340-050-0065’s source at or​.us