What is the difference between a Preliminary WQMP and a Final WQMP?

The difference between a Preliminary WQMP and a Final WQMP is the amount of detail to be filled out within the WQMP template. A Preliminary WQMP will include all of the content as a Final WQMP except for the operational procedures for maintenance of BMPs and a signed agreement. Essentially a Preliminary WQMP will be a 90% completed Final WQMP.