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APPENDIX I - BIOLOGICAL RESOURCES Impact 4.7-4 Use of herbicides would potentially damage the natural environment. The present availability of herbicides, especially the translocating types such as "Roundup" and "Kleanup,"raise the possibility that sprays of these and others could be carried from the lawn and garden of the house sites to the natural environment. A very small amount could do significant damage to all native plant species. The Management Plan discusses the removal of poison oak adjacent to the fairways located in the woods. The plan does not discuss how this removal would be achieved. The above mentioned herbicides are typically used for the removal of poison oak. Miti ag tion 4.7-4 Develop a set of rigid herbicide use regulations for the residents and professional gardeners of the new development that will prevent ru off and/or drift of herbicides into the adjacent natural botanical community. Disseminate these in pamphlet form biannually to the new residents of this and adjacent foothill edge communities. No herbicides should be used in the riparian woodland. Impact 4.7-5 Domestic landscaping could compete with natural plant community. Exotic shrubs and trees could be planted which can colonize and out-compete native species in the adjacent natural community. Miti ag tion 4.7-5 Landscaping of the homesites should include only native, non-invasive,drought-resistant shrubs and trees of the same type found in the adjacent shrub and woodland communities. The list of restrictive plants found on page 59 of the Management Plan should be incorporated in the CC&Rs. Impact 4.7-6 The potential for wildland fires increases with the introduction of residences in a natural area. The use of outdoor barbecues, trash burning barrels or open controlled fires, as recommended in the Management Plan,within the grassland/woodland habitat complex would pose a continuous threat to the 26