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! <br />i <br />� <br />� <br />rede�e(opment p�rsuant to paragraph 2(e) above, the siandard is the 0.8-inch e�ent rather <br />than the 2.8-inch event. <br />(d) Where infltra#ion .is nat feasi,hle, filtration is preferred. In#i[tration is considered not <br />feasible where soifs do not suppor� �nfiltrafion, documented soif contaminants preclude th� <br />use of infiltration practices, or there is inadequafe separation from fhe waf�r table. <br />(e} For a s#te or part of a site characterized by HSG C or � soils, the stormwater <br />' management plan shall focus on incorporation of water quality BMPs. �`he order of <br />pr�ference for BMP's is biofiltrafion, flliration, wetland treatment sys#em, extended <br />detention basin, NURP ponding. <br />� <br />r <br />� <br />��I <br />1 <br />� <br />� <br />� <br />� <br />� <br />� <br />(fl The runoff �o�ume infil#rafionldetention standard of paragraph (b) is modified for <br />public linear (roadway, sidewafk and traii) projecfs not part of an industrial, commercial, <br />institutional or residential development as foilows: <br />Project Type I Roadway <br />Cla;ssificafion <br />�[ew Construct�on <br />(? 9.0 acre <br />impervious} <br />Reconstructian <br />or <br />New Construction <br />(� 1.0 acre <br />impervious) <br />Sfandard <br />Arterial, County Road Stanalard for non-linear projects <br />or Highway applies to runoff from fhe new and <br />reconstructed irnpervious surface <br />Standard for non-linear projects <br />Coll�ctar, applies to runoff #ram the new and <br />Subcollector or reconstructed imperviQUS surface <br />Access ��d the directly connected <br />irnpervious surfaces within tF�e <br />_ ra'ect corridor <br />Arterial, County Raad Infiliration of �.0-inch of rUnoff from <br />or Highway fhe new and reconstrucied <br />impervious sur€ace <br />Collector, <br />Subcallector or <br />Access <br />Rehabilifatior� � All <br />Mill & O�erfay ' Alf <br />lnfiltration of 0.8-inch of runoff frotn <br />fhe new and reconstrucied <br />impervious surface and tl�e directly <br />conr�ected impervious surfaces <br />within fhe projeci corridor <br />No waier qualitylvolume control � <br />_ re uir�ment <br />No Rule C permit requir�d � <br />(1) Speci#ic site conditions may make infiftralion difflcult, und�sirable, or <br />impossible. These conditions rnay qualify a p��bl�c iinear project applicar�# for <br />Alternative Compl#ance Sequencing. The applicant musi also submif a request to <br />the District for Alternative Compliance 5equencing. All requests shalf indicate the <br />specific site condiEions present and document via a grading �alar�, utility plan, or welf <br />location map. <br />12 <br />