"The following is a student created blog regarding the history of the Petaluma Watershed. This blog is part of a series from students at Casa Grande participating in the Watershed Classroom with educators Paula Biancalana and Jolene Thinnes."
Jerico is located on the south side of the D street bridge in Petaluma. This company was created in 1958 originally as, “Pioneer Shell. This company dredges ancient oyster shells. The oyster shells are used for animal feed because they contain calcium. Pomeroy Co. and Shamrock are companies that make concrete and other material. Pomeroy made materials for the Richmond San Rafael Bridge. Shamrock is also very known for its ready mix concrete.
By Leticia Garcia