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., Environment; lnc. " Page 3 <br />• Albeit freltand, $ons, lnc: " <br />INalstnim: Aggregate Quarry <br />M,L::R:B. Peimk M-83-033 <br />Revey,report.' "NO additional reclamation is planned for this slick <br />rock face at this time. <br />- 9:, Attached.is a copy of, our NPDES Permit/Storm Water Management Plan <br />(SWMP) map showing how drainage "from the disturbed mine area is <br />- managed':.', This map wi'1l be revised as necessary to addresses <br />potential runoff concerns-in the future. Only water that contacts <br />the mined area-has to `be controlled per CDOH requirements. Water <br />from; the undisturbed area is diverted around the active mine area <br />to keep it from becoming process water. Precipitation falling on <br />~. the site is directed into the mine and retained on the site until <br />- it is treated for release under our permits. <br />The only discharge point for .the quarry is.at the mouth of the <br />existing entrance:. This was an ephemeral creek that drains a 227 <br />acre basin-that include most of the .quarry and extends to the <br />ridge line above the mine. In"1994 a storm water/process water <br />.retention pond was installed west of the scale house on the old <br />-creek channel to collect any-storm water runoff from the mine area <br />proper: Freis records show there. have been no discharges from <br />this pond since that. time. <br />In"2001, Stage Y was regraded and a retention pond was constructed- <br />, on the east end to collect any runoff from this .area and prevent <br />it from entering the .river. Attached is a sketch map showing how <br />Stage Y will be completed as required .by the Clear Creek County <br />'. Commissioner. This landscaping plan contains items that will <br />prevent process water from entering Clear Creek.- In addition, a <br />silt"fence has' been constructed along the-west end of the area <br />,, where bhe landscape berm is being built. As mining. progresses the <br />retention ponds will be resized as needed and when the lake areas <br />" are. built,., any surface runoff that contacts the disturbed area <br />will be directed to those depressions"for settling prior to <br />' release finder.the approved NPDES permit. Each retention pond has <br />an Urban Drainage and`Flood Control District (UDFCD) type, <br />§tormwater quality outlet designed to release the water at a <br />controlled 'rate,. that will not only control water quality but. meet <br />the release requirements of the OSE. <br />BMP's that are or that will be employed on the mine area include <br />but are not limited toc <br />STORMWATER RETENTION 'PONDS <br />- SILT FENCES - <br />- TEMPORARY STRAW BALE BARRIERS <br />" -TEMPORARY REVEGETAT ION ". - .. <br />- - ~ STORM WATER QUALITY OUTLET DESIGNED TO UDFCD STANDARDS <br />5. Attached is a revised reclamation cost estimate to address the <br />April-.2002 inspection. It is based bn how much reclamation was <br />needed on 7/17/2002 since the-mine changes daily and some baseline <br />had to be chosen. It addresses each additional item you list, <br />corrected the typo'of the topsoil costs and show that the <br />mobilisation was for demobilization also. The Reclamation Plan <br />' Map shows Phase Y as a commercial area when reclamation is <br />.complete. This is an area leased to a log home building company <br />as a log yaid and construction area. Clear Creek County issued a <br />~$pecal Use permit for this use. Albert Frei .and Sons, Inc., wish <br />to 1'eave it as a commercial"area. i may have forgot to make this <br />ti x :. s t aok ~~ s ,.,~. xs ' a ~ <br />- '~.x- .~.x. was -`.. .a.L n^...a.... ~.SSa'L'#xsrm't»3,W3.4, A.{. - . ix-,.a. ~ ...c . <br />