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C. 3 S T O R M W A T E R TECHNICAL GUIDANCE <br />periods of shallow inundation and dry soil. Manual methods of weed removal should be <br />conducted on the bottom edge and side of the basins when these areas are not inundated. <br />Areas with hydroseeding on the banks of the basins should be weeded carefully to avoid <br />removal of the native species. <br />Wbeding should be conducted regularly the first two years to prevent the growth, flowering, <br />and seed set of non-native weeds and invasive species. After the first two years, weeding <br />frequency will be deterrrined on a site -specific basis as determined by the type of weeds and <br />seasonal growth cycle of the weed species. In general, weeding once a month will be <br />necessary to avoid more extensive and costly eradication in the future. <br />Long-term maintenance tasks on the banks of the basins will include continued control of <br />nonnative weeds and invasive plans, and control of erosion. Erosion could include gullies, rills <br />and sheet erosion. Actions to control erosion should include redirecting or dissipating the water <br />source. F;bcontouring and subsequent mulching and/or reseeding with erosion control species <br />may be required in bare areas. In the even of extensive d'le-0ff of the native Plant species, the <br />bare areas should be replanted. Where the event that caused plant mortality was not a natural <br />catastrophic occurrence, the site condition that resulted in the die -off should be investigated <br />and remedial action to correct the problem should be undertaken Prior to replanting. <br />B.6 Bay6Friendly Landscaping and IPM <br />This section provides a summary of Bay -Friendly landscaping and integrated pest <br />menagem>ent (FtVfj techniques, based on Alameda County's Bay Friendly Landscaping <br />Guidelines prepared by Fbscape California, also known as the Bay -Friendly Landscaping <br />Coalition (avalable at www.rescapeca.orq). <br />Bay Friendly Landscaping <br />Bay -Friendly landscaping is a w hole systems approach to the design, construction and <br />maintenance of the landscape in order to support the integrity of the San Francisco Bay <br />watershed. F roject sponsors are encouraged to use landscape professionals who are farriliar <br />with and committed to imlolemerting Bay -Friendly landscaping practices from the initial plan <br />selection through the long-term maintenance of the site. This section summarizes Bay - <br />Friendly Landscaping practices that may be implemented information that project sponsors <br />need about how these practices canto benefit water quality of the Bay and its tributaries. <br />Bay -Friendly landscaping is based on 7 principles of sustainable landscaping and features <br />the follow ing practices: <br />1. Landscape Locally. Landscapes designed to be part of the larger ecosystem of the Bay <br />Area can both protect the health, diversity and sustainabiliy of this valuable resource while <br />making the most of the natural processes of a well -functioning ecosystem By selecting <br />plants appropriate to the climate, exposure, soils, drainage and topography, plantings can <br />be established more successfully with less consumption of resources and intensive <br />maintenance. Landscape designers are also encouraged to use local, well -adapted plant <br />communities as models and to consider the potential for fire when developing the plant <br />palette for a project. <br />APPENDIX B B-15 <br />