Clear skies in August mean brutally hot days. So the slight morning chill only heightens my wariness of the day’s coming heat. I force down a final drink of water before buckling my chest-waders and pulling on the full 15 liter backpack sprayer. My two fellow restoration technicians follow suit and we stride out into the field. Soon we arrive at a steep path descending down to the floodplain of the Satsop River.