| Table 6. Class B biosolids pathogen standards and site restrictions | |
|---|---|
| Restricted Activity | Site Restriction |
| Harvest of food crop touching ground | 14 months after application |
| Harvest of root crop (see next condition) | 20 months after application |
| Harvest of root crop if sludge on surface < 4 months prior to incorporation 38 months after application |
38 months after application |
| Harvest of other food, feed, and fiber crops | 30 days after application |
| Grazing of animals 30 days after application | 30 days after application |
| Harvest of turf for high contact site, e.g., golf course or lawn; or public access to turf |
1 year after application |
| Access to sites with high potential for public exposure | Restrict for 1 year |
| Access to sites with low potential for public exposure | Restrict for 30 days |
Restrictions may vary based on the class of biosolids being applied. (Refer to OEPA 503 rules for specific class restrictions.)