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Johnson Creek watershed total maximum daily load (Publication) - Steven R Butkus
Lower Skagit River fecal coliform total maximum daily load: Submittal report : water cleanup plan (Publication) - Steven R Butkus
Lower Skagit River dissolved oxygen total maximum daily load: Submittal report (Publication) - Steven R Butkus
Upper Chehalis River Basin temperature: Total maximum daily load (Publication) - Steven R Butkus
Factors affecting waters with a high pH: Statewide analysis (Publication) - Steven R Butkus