![Guess How Much This Plant Had to Invest for Permit-Compliant Nutrient Reduction](https://cole-tpomag.imgix.net/https%3A%2F%2Fwww.tpomag.com%2Fuploads%2Fimages%2Flakestevens1.jpg?crop=focalpoint&fit=crop&fp-x=0.5&fp-y=0.5&h=620&ixlib=php-1.1.0&q=75&w=1024&s=c92551a68cde7c1dc2ed2933220c36f5)
The team at the Lake Stevens Sewer District includes, back row, from left, Duane McFall, lead maintenance; Travis Rosencrans, supervisor; Eric Echols, operator; and Ryan Bolden, laboratory analyst. Front row, Greg Bradley, operator; Chris Ayriss, senior operator; and Daniel Savoie, operator.
Everything was running fine at the Lake Stevens Sewer District. Then the Washington Department of Ecology imposed a new permit limiting total inorganic nitrogen. The district had less than a year to comply.
A physical plant upgrade to meet the permit limit could have cost...