of Health is raising mobile home park operating fees by up to 250 percent, Harmsworth argues. Photo courtesy Canva🎧 WA Fee Hikes Hit the Housing the Poor Depend On Your browser does not support the audio element. Mark HarmsworthConsider the temporary worker housing fees under the Washington Administrative Code, WAC 246-358-990. Mobile parks frequently rely on large on-site sewage systems (LOSS) because municipal sewers are unavailable. Instead of reflexive fee hikes, the Department of Health and Legislature should first demonstrate aggressive efficiency reforms, technology improvements, and prioritization of high-risk activities.