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Temporary and Permanent Seeding (TS/PS) EC-2 <br /> Description <br /> Temporary seeding can be used to <br /> stabilize disturbed areas that will be # <br /> inactive for an extended period. _ <br /> Permanent seeding should be used to <br /> stabilize areas at final grade that will not } <br /> be otherwise stabilized. Effective seeding <br /> includes preparation of a seedbed, <br /> selection of an appropriate seed mixture, <br /> proper planting techniques,and protection <br /> of the seeded area with mulch,geotextiles, <br /> or other appropriate measures. <br /> Appropriate Uses <br /> r. <br /> When the soil surface is disturbed and Photograph TS/PS-1. Equipment used to drill seed. Photo courtesy of <br /> will remain inactive for an extended Douglas County. <br /> period(typically 30 days or longer), <br /> proactive stabilization measures should be implemented. If the inactive period is short-lived(on the order <br /> of two weeks),techniques such as surface roughening may be appropriate. For longer periods of <br /> inactivity,temporary seeding and mulching can provide effective erosion control. Permanent seeding <br /> should be used on finished areas that have not been otherwise stabilized. <br /> Typically, local governments have their own seed mixes and timelines for seeding. Check jurisdictional <br /> requirements for seeding and temporary stabilization. <br /> Design and Installation <br /> Effective seeding requires proper seedbed preparation,selection of an appropriate seed mixture, use of <br /> appropriate seeding equipment to ensure proper coverage and density,and protection with mulch or fabric <br /> until plants are established. <br /> The USDCM Volume 2 Revegetation Chapter contains detailed seed mix,soil preparations,and seeding <br /> and mulching recommendations that may be referenced to supplement this Fact Sheet. <br /> Drill seeding is the preferred seeding method. Hydroseeding is not recommended except in areas where <br /> steep slopes prevent use of drill seeding equipment,and even in these instances it is preferable to hand <br /> seed and mulch. Some jurisdictions do not allow hydroseeding or hydromulching. <br /> Seedbed Preparation <br /> Prior to seeding,ensure that areas to be revegetated have <br /> soil conditions capable of supporting vegetation. Overlot Temporary and Permanent Seeding <br /> grading can result in loss of topsoil,resulting in poor quality <br /> subsoils at the ground surface that have low nutrient value, Functions <br /> little organic matter content,few soil microorganisms, Erosion Control Yes <br /> rooting restrictions,and conditions less conducive to Sediment Control No <br /> infiltration of precipitation. As a result, it is typically Site/Material Management No <br /> necessary to provide stockpiled topsoil, compost, or other <br /> June 2012 Urban Drainage and Flood Control District TS/PS-1 <br /> Urban Storm Drainage Criteria Manual Volume 3 <br />