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3. Site Map <br />Each plan shall provide a site neap or maps which indicate at a minimum: <br />- mining/milling site boundaries and access and haul roads; <br />- equipment storage, fueling and maintenance areas; <br />- materials handling areas; <br />- areas used for storage of overburden, nt terials, soils or wastes; <br />- areas used for outdoor manufacturing, storage or disposal of materials; <br />- location of mine drainage or any other process water; <br />- tailings piles /ponds, both new and pre-existing; <br />- mine drainage or any other process water discharge points; <br />- springs, streams, wetlands and other surface waters; and <br />- boundary of area that contributes runoff to outfalls that are subject to effluent limitations <br />guidelines. <br />For those areas outside of the area that contributes runoff to arutfalls that are subject to effluent <br />limitations guidelines: <br />- an estimate oldie dinedion(s) of flow; <br />- stormwater outfalls and an outline of the drainage area of each stormwater outfall; <br />- each existing structural control measure to reduce pollutants in stormwater runoff`; and <br />- the location of impervious structures (e.g. parking lots, roofs, eta) <br />The drainage areas shown should include the portions of the site where industrial activities occur, as <br />well as those portions contributing stormwater that mixes with runofffrom the industrial area. <br />Therefore, the entire drainage area where industrial activities occur must usually be included. Aside <br />from mining industrial activities can include equipment washing materials storage, vehicle <br />maintenance or fueling: incineration, waste treatment, storage or disposal, <br />shipping/loading/unloading etc. You do not need to include industrial activities which only take <br />place indoors, unless there is some part or aspect of the activity with which stormwater could come <br />in contact. For example, if all vehicle maintenance is done indoors, but vehicle storage or fueling is <br />outside, the vehicle storage or fueling area must be addressed <br />The map should show, at a minimum: <br />• Locations of stormwater ouifalls: <br />If the site has a stormwater drainage system, the location of outfalls is a simple task Indicate on the <br />map where pipeline ouifalls are, as well as the general layout of the drainage system such as inlets, <br />grates, pipelines, etc. If stormwater is conveyed over land without a developed storm drainage <br />system, the points where nrnof collects and r of must be located <br />• Drainage basins for each outfall: <br />Field inspection can usually accomplish this task with acceptable accuracy.. Look for high areas <br />such as crests of parking lots, roads, etc. which would form the division between drainages. Gullies <br />and swains are indicators of stormwaterflow direction. Obviously, if runoff is observed during a <br />storm, most uncertainties can be eliminated <br />♦ Surface water bodies (including dry water courses): <br />Mark on the site map any surface water bodies, including lakes, streams, springs, wetlands, <br />detention ponds, roadside or irrigation ditches, etc. These do not necessarily need to be within the <br />facility, but may be adjacent to it or impacted by stormwater runoff. <br />• • Existing structural control measures to reduce stormwater pollution: <br />r: MinestSWadP►E Ja- Kingslawsw rev it -99 5 <br />November 1, 1999 <br />