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TC.1 <br /> ■ If aggregate is selected,place crushed <br /> or p€ace aggregate to a depth recon aggregate over geot e fabric to at least 12 in. depth. <br /> Brea ter than 3 in. but smaller thanm n. should be used n engineer. A crushed aggregate <br /> e Desi nate combination or single purpose entrances and exits to the cons <br /> Req'Idre that all employees, subcontractors,and suppliersu truct2on site. <br /> = <br /> accea>s. <br /> til ze the stabilized construction <br /> ■ Implement SE-7, Street Sweeping and Vacuuming,as needed <br /> ' All E.Kit locations intended to be used for more than a two-weekriod <br /> con.traction entrance/exit BMPs. Pe should have stabilized <br /> Inspection and Maintenance <br /> ffi Inspect and verify that activity—based <br /> asso:fated activities. While activbit es associated wits are in h the BMPs are under way,commencement inspectof <br /> weeHy during the rainy season and of two-week intervals in the non-rainy season <br /> continued BMP implementation. .o verify <br /> ' InsP`ct local roads adjacent to the site daily. Sweep or vacuum to rem <br /> accu::anulated sediment. ave visible <br /> ■ Rem ave aggregate, separate and dispose of sediment if construction entrance/exit is c <br /> with sediment. logged <br /> ' Keep all temporary roadway ditches cleat. <br /> ■ Cheek for damage and repair as needed. <br /> s Replace gravel material when surface voids are visible. <br /> 3 Reml)ve all sediment deposited on paved roadwayswithin 24 hours. <br /> ■ Remove gravel and filter fabric at completion of construction <br /> Costs <br /> Average,annual cost for installation and maintenance may vary from 1 <br /> averaging $2,400 per entrance. Costs will increase with addition of washing r $4 800 each, <br /> trap. With wash rack, costs range from$1,200- $6,00o each, averaging , rack, and sediment <br /> References g g $3,600 per entrance. <br /> Manual f:)f Standards of Erosion and Sediment Control Measures _ <br /> Governr:eats, May 1996• ,-Association of Bay Area <br /> National Management Measures to Control Nonpoint Source Pollution from <br /> USEPA�.gency, 2002. Urban Areas, <br /> Proposed,Guidance Specifying Management Measures for Sources o <br /> Coastal 141aters, Work Group Working Paper, USEPA,April 1 2 f Nonpoint <br /> 99 <br /> P � Pollution in <br /> January 2003 .:. <br /> Catlforn-a S#oEcr ra er B P Handbook <br /> 3 of 6 <br />