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Each of these categories is described in greater detail below and an Erosion Control BMP <br /> Matrix is included to highlight the applicability of each technology given specific site <br /> conditions. Standard details have been prepared for most of the BMPs and a <br /> reference to the standard detail number (i.e. T-OHD-MSC-020.000) is available in <br /> the Erosion Control BMP Matrix. <br /> Avoidance and Minimization Practices <br /> Prior to initiating construction activities, the project team should consider the physical <br /> characteristics of the construction and access areas. The team should attempt to avoid soil <br /> exposure and risk of soil loss when possible since avoidance is the simplest way to reduce <br /> the potential for erosion during construction. <br /> Avoidance practices include: <br /> • Avoid access in highly erosive areas such as steep slopes, flowlines of ditches, <br /> and where culverts drain or discharge to or from the construction site, <br /> • Sequence construction activities to minimize the length of time that the ground <br /> Route disturbed, <br /> • Route non-essential vehicles around disturbed areas and areas susceptible to <br /> �e 7rosion; <br /> • Utilize roadways to minimize traffic in and out of work areas. <br /> • Sequence construction activities to work during less erosive times of the year <br /> (dry and frozen conditions). <br /> In situations where avoidance practices are not feasible, or will not adequately prevent soil <br /> loss, alternative BMPs should be implemented to manage expected erosion and sediment <br /> transport from the construction site. <br /> ENV EF 27 <br /> See on-line version for current revisions. <br /> Page 5 of 8 Revision Date: 06/22/09 <br />