The links listed below are provided as information for manufacturers pertaining to details of the WMMFA Standard Plan and Washington state Department of Ecology rules interpretation(s) including details on how manufacturer shares are computed and FAQ's. Past and current return share data is also posted here.
FAQ's in reference to Manufacturer's Invoices: (click on link below)
Return share data detail - find yours here : (click on link below)
New regulations put responsibility for market share(s) determination with the Dept. of Ecology