05/02/2026
A friendly reminder that tractors belonging to your local farmers are back on the road including our manure tankers which help support about a half dozen of the remaining dairies on the Enumclaw Plateau. Please drive carefully around farm machinery. But, why do we need a manure tanker?
Here are a few things you may not know about local farms and why managing manure is an enormous task.
1. Liquid manure can only be applied during the growing season (typically April - October).
2. All manure, rain water and driveway runoff must be captured and stored in lagoons. Having manure in ditches and waterways is illegal.
3. Every commercial farm is required to have a Certified Nutrient Management Plan which includes crop production records, weather, manure application rates and lab tests for soil from every farmed field and manure. Over applying is prohibited.
4. Dept of Ecology is constantly on the Plateau collecting water samples from local streams or ditches and flying overhead looking for over flowing manure storage ponds.
5. Manure is applied, the grass grows and harvested about three weeks later and the process starts again throughout the summer or until the heat burns up the grass. The odor from the manure is the fertilizer (NPK) and organic matter breaking down. It is absorbed and used by growing grass within a few days. Rainfall will expedite the process.
6. Two manure tankers from our farm like the one pictured here, each haul 7400 gallons to the nearly 1400 acres we farm on the Plateau. They are pulled by a 250hp JCB Fastrac which has a top speed of 31 mph loaded. Each tractor and tanker unit has a price tag of $300,000.
7. All of the grass harvested is used to feed the nearly 6000 dairy cows on the Plateau whose milk is shipped to local milk processing plants - Darigold, Organic Valley, Safeway or Smith Brothers.
Thanks to all of those who cherish our Enumclaw heritage and appreciate the hard work that goes into farming. If you have questions, please ask!! We don’t give farm tours, but I’ll do my best to answer in a timely manner.