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;1$ RRA DELT -SIERRA GROUPIE <br /> MOTHER LODE CHAP ET R eCL <br /> � <br /> SIERRA CLUB �° <br /> P.O. Box 9258 <br /> Stockton, CA 95208 <br /> Mar . 1 , 1990 <br /> .v <br /> Richard Larrouy <br /> San Joaquin County Planning Division <br /> 1810 East Hazelton Ave . <br /> Stockton, CA 95205 <br /> Dear Mr . Larrouy :' <br /> This letter is regarding the Notice of Preparation for <br /> Environmental Impact Report number ER-90-8, a proposed quarry <br /> excavation project . The Delta-Sierra Group of the Sierra Club is <br /> concerned about the potential loss of riparian and aquatic <br /> h;jbitat along the Mokelumne River as a result of this project . <br /> The applicant states that natural vegetation along the river will <br /> be protected, as no excavation will occur in areas immediately <br /> adjacent to the river . But project activities could <br /> significantly impact the riparian vegetation and associated <br /> wildlife even if vegetation "immediately adjacent" to the river <br /> is not removed . This aspect should be considered in the <br /> Environmental Impact Report . The Initial Study notes the <br /> potential for siltation of the river and riverbank erosion during <br /> periods of heavy precipitation as a result of this project . As <br /> the Mokelumne River, is important for Chinook salmon and steelhead <br /> trout, this potential loss or degradation of fish habitat should <br /> be thoroughly addressed in the Environmental Impact Report . <br /> Thank you for the opportunity to comment at this preparation <br /> phase of the Environmental Impact Report . We wish to remain on <br /> the mailing list for the draft Environmental Impact Report and <br /> any other documents concerning this project . <br /> Sincerely, <br /> Kathy Hieb <br /> Conservation Co-Chair <br /> Delta-Sierra Group <br />