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CITY OF EVERETf STORMWATER MANA(iEMENTMANUAL <br /> � <br /> � Table 3.6 Meadow Seed Mix <br /> °/, N. Y. <br /> Weight Purity Germination <br /> Redlop or Oregon bentgrass 20 92 85 <br /> Agrostis alba or Agrostis oregonensis <br /> Redfescue 70 98 90 <br /> Festuca rubra <br /> White dutch clover 10 98 90 <br /> Trilofium repens <br /> Mainfenance Sfandards <br /> I. My seeded areas that fail to establish at least 80 percent cover(100 percent cover for areas that <br /> receive sheel or concentnted flows)shall be reseeded. If resecding is ineffective,an altemate <br /> method,such as sodding,mulching,or nets/blankets, shall be used. If winter weather prevenu <br /> adequate grass growth,this time limit may be relexed at the discretion of the City when sensitive <br /> areas would otherwise be protected. <br /> 2. A$er adequate cover is achicved,any areas that cxpericnce emsion shall Uc reseedcd and <br /> protected by mulch. If the erosion problem is drainage related,the problem shall be f xed and the <br /> eroded area reseeded and protected by mulch. <br /> 3. Seeded areas shall be supplied with adequate moisture,but ao[watcrcd to the extent that it causcs <br /> cunoff. <br /> 1 <br /> � 3.2.8 BMP C121: Mulching <br /> Purpose <br /> The purpose of mulching soils is to provide immediate temporary protection fram erosion. Mulch also <br /> enhances plant establishment by conserving moisturc,holding feriilizet,secd, and topsoil in placc,and <br /> moderating soil temperatures. There is an enortnous variery of mulches that can be used. Only the mosi <br /> comtnon types are discusscd in this section. <br /> Conditions of Use <br /> As a temporary wver measure,mulch should be used: <br /> 1. On disturbed azcas thal require caver meesuros for less than 30 days <br /> 2. As a cover for sced during the wet seeson and duriog t6e hot summcr months <br /> 3. During tlic wet season on slopcs stccper thnn 3H:1 V with more than 10(eet of vertical rclic( <br /> 4. Mulch may bc applicd at any time of the ycar and must bc refreshed periodically. <br /> Desfgn and fnstallation SpeciRcations <br /> I. For mulch materiats,application retes,and specifications,see Table 3.i. <br /> 2. Mulch used w�ithin the ordinary high-water mark of surface waters shall be selected to minimize <br /> potenlial flotation of organie matter. Composted organic materials have higher specific graviiies <br /> (densitics)than straw,wood,or chipped material. <br /> Maintenance Standards <br /> L The Ihickness of the cover rousl be maintaincd <br /> Volume II—Construction Stormwater Pollution Prevention <br /> 3-14 <br />