There were few (if any) opportunities to remove excess slash by utilizing burn piles this winter.
For details, including fees and what is accepted, see:
Coal Creek Canyon, June 2nd/3rd
To find out about other slash collection events, including one at Blue Mountain later in the year, see:
Note: even though this particular event is hosted by Jefferson county, all Coal Creek Canyon/neighbor residents (including from Boulder county and Gilpin county) are welcome.