The EDSET crew (Education in Design, Science Environmental Technology) from Albany High School are sheet mulching with our huge supply of stone pine mulch. (See posts of stone pine removal) We first cut the unwanted grasses & weeds to the ground, then covered over the site with rolls of cardboard that were pinned in place. Three to four inches of mulch was added on top. This process is used to smother the weedy species with the cardboard & mulch. Over time these will rot and add nutrients to the soil. In the future, holes will be cut into the cardboard and riparian species of plants will be planted into the ground by the creek.