General Permit for Biosolids Management - Washington State ...

General Permit for Biosolids Management Page 29
After July 1, 2012, screening through a bar screen with a maximum 3/8 inch aperture or an
Ecology-approved equivalent process is required. Screening (or an approved equivalent process)
may occur at any time in the wastewater treatment or biosolids manufacturing process, but it
must occur before grinding or similar processes.
12.2. Agronomic Rate
The biosolids must be applied at an agronomic rate in accordance with WAC 173-308-190.
The person who prepares the biosolids is responsible for providing information necessary to determine
an agronomic rate to the person who receives the biosolids.
12.3. Pollutants, Pathogens, and Vector Attraction Reduction
Biosolids must meet the requirements for “exceptional quality biosolids”. This means they must meet
the pollutant concentration limits in WAC 173-308-160 Table 3, one of the Class A pathogen reduction
requirements in WAC 173-308-170(1)-(4), and one of the vector attraction reduction requirements in
WAC 173-308-180.
12.4. Labeling Requirements
The biosolids must have a label or accompanying information sheet. The label or information sheet must
contain the following information:
The name, address, and phone number of the person who prepared the biosolids.
A statement or information indicating that the product complies with applicable regulations for
biosolids or that the product has been prepared to meet standards that make it safe for its
intended use when used in accordance with the directions provided by the manufacturer.
A statement or information that encourages proper use of the product and protection of public
health and the environment. This may include information on product storage, hygiene, and
protection of surface or ground water resources.
Agronomic rates for typical applications or guidance on how to determine the agronomic rate of
application.
A statement or information indicating that the product contains or is derived from biosolids.
Unless registered as a fertilizer by the Washington State Department of Agriculture, a disclaimer
stating that the product is not a commercial fertilizer and that all nutrient claims are estimates
or averages and not guaranteed.
13. REQUIREMENTS FOR SEPTAGE APPLIED TO THE LAND
This section contains the requirements for the land application of septage as defined in this permit. It
does not apply to “septage managed as biosolids originating from sewage sludge” as defined in this
permit. Facilities who seek to manage their septage as biosolids must meet all the requirements
applicable to the particular classification of biosolids into which it falls.
13.1. Removing Manufactured Inerts
The septage must meet the requirements for removal of manufactured inerts in WAC 173-308-205.
Minimally, the following conditions must be met.
The septage must contain