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Buy NN Credits
Learn More About Our Available NN Credits
At BioMark, we provide verified Nutrient Neutrality credits exclusively within the Teesmouth Catchment Area. These credits can be purchased to offset unavoidable nutrient outputs, helping developers to meet planning requirements with confidence.
Step 4
If a surplus remains, purchase off-site NN credits to offset impacts and achieve compliance.
Step 3
Compare results against baseline nutrient levels to identify any increase.
Step 2
Enter site details and proposed land usage to estimate nutrient outputs.
Calculating Nutrient Levels
To meet Nutrient Neutrality requirements, developers must calculate the nutrient budget of their proposed development, ensuring there is no net increase in nutrient pollution to protected habitat sites.
At BioMark, we provide verified Nutrient Neutrality credits exclusively within the Teesmouth Catchment Area. These credits can be purchased to offset unavoidable nutrient outputs, helping developers to meet planning requirements with confidence.
A Guide to Calculating NN

We have successfully obtained Nitrate Mitigation and BNG units for a number of our projects with assistance from BioMark. The process was extremely quick and easy. BioMark are always on hand to answer questions and assist with the planning application process when dealing with the necessary mitigation and the legal documentation required. I would have no hesitation to recommend BioMark
Director, Wardman Brown
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