The top 100 of largest ammonia emitters in the Netherlands, as published on April 5 by Minister Van der Wal (Nitrogen Policy), is incorrect. This has been reported to the House of Representatives by director Charles Wijnker of the RIVM. An incorrect calculation method was used.
At the request of Member of Parliament Laura Bromet (GroenLinks) has had Minister Van der Wal draw up two top 100s. It concerns a list with the largest nitrogen emitters and another list with the largest ammonia emitters. Immediately after publication yesterday, doubts arose about the correctness of at least the last list. People didn't recognize the calculated data and started asking questions. This has led to the response of the RIVM. Minister Van der Wal sent it to the House of Representatives without further explanation.
Old code for new company
According to Wijnker, the error in the ammonia list was caused by an incorrect calculation method. He points out that about three hundred different barn systems are used in livestock farming in the Netherlands (the RAV code list). Each system has its own emission factors. They should have been used when drawing up the top 100.
However, that has not happened. For many modern houses, a RAV code has been used that applies to older and more polluting houses. For example, on the list published yesterday, stables are listed high that in reality should be much lower.
According to Wijnker, RIVM is now working hard on an improved top 100. to make. He expects it to be ready within a week. In the meantime, the cause of the error is being investigated.