The use of biosolids for agricultural use is permitted in Washington. This is actually a trending option as it’s a more environmentally friendly solution. Biosolids can improve soil health and not contaminate the groundwater. There are, however, requirements that must be in place before farmlands can apply biosolids. Learn the basic requirements for biosolids and verify that the company you hire goes through the proper channels and follows state/federal requirements.
Remove Manufactured Inerts
Before land application implementation, the biosolids must meet requirements for the removal of manufactured inerts. At a minimum, the material has to contain <1% by volume of approved inerts. In addition, the material must be screened via a bar screen with a maximum of 3/8 inch aperture. Other environmentally-approved materials of similar substances are acceptable.
Test the Soil
Sites must undergo testing for pollutants before they can be eligible for biosolid land application. The material can’t surpass the ceiling concentration limit. Nutrient levels must also undergo a thorough examination.
Determine the Agronomic Rate
You have to apply biosolids at the right agronomical rate. The rate is determined by nutrient concentrations in the soil. The company that supplies the materials is responsible for determining this rate. Verify that the company is able to provide this information when making arrangements for biosolids transportation.
Restrict Public Access
Access to the location where biosolids are applied must be restricted to the general public. At a minimum, the sites must display off-limit signs for as long as the area is restricted.
Need Assistance with Requirements for Biosolids Land Application in Washington?
You don’t have to know the requirements for biosolids application like the back of your hand. Tenelco Inc. can assist you with the permit process and walk you through the logistics. We also perform septage receiving for local businesses throughout Washington.
Help with Requirements for Biosolids Application in Washington
Serving the Municipalities of Western Washington and the Farmers of Eastern Washington