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BEsT MANAGEMENT PRACTICEs HANDbooK - Tahoe BMP

BEsT MANAGEMENT PRACTICEs HANDbooK - Tahoe BMP

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Fire Defensible SpaceRefers to the area between a structure and oncoming wildfire where thevegetation has been managed to reduce the wildfire threat and, when possible,allows fire fighters to safely defend the structure.FlankingErosion behind or around the land-based end of a groin, jetty, or breakwater orthe terminus of a bulkhead, revetment, or lake wall, usually causing failure ofthe structure or its function.ForeduneThe front dune immediately behind the backshore.ForeshoreThe zone of a lake level fluctuation which is the area between the high and lowwater level. For Lake <strong>Tahoe</strong>, the elevations are 6229.1 feet Lake <strong>Tahoe</strong> Datumand 6223.0 feet Lake <strong>Tahoe</strong> Datum, respectively.GeotextileA synthetic fabric which may be woven or non-woven used as a filter.GradingCutting through or otherwise disturbing the layers of the soil mantle so as tochange the existing landform, including, but not limited to, disturbing the soilmantle for construction of a driveway, parking area, utility line, building, orother structure. Also includes filling, excavation, and clearing.Grading SeasonThe period each year during which grading is permitted commencing May 1and ending October 15.Gravel ArmorA three-inch thick layer of angular washed rock placed below decks anddriplines to protect soil from splash erosion.Herbaceous PlantsA plant that has leaves and stems that die down at the end of the growingseason to the soil level. They contain no persistent woody material aboveground.Hose TestField test which utilizes running water to verify the effectiveness of aconveyance device or other <strong>BMP</strong>.Individual Parcel Evaluation System (IPES)A system for the evaluation and ranking of residential parcels within eachjurisdiction, vacant as of December 31, 1988, from most suitable to leastsuitable for development.TRPA <strong>BMP</strong> HandbookGlossary2012 Page 7

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