Laserfiche WebLink
� <br /> � BMP C220: Slorm Urain Inlei Protection <br /> � Purpo.�c I�a prc�cnt coarsc scdiincnt Iium rnirring dr;+in;itc ��,tcm� p�i��, t�, <br /> pctmancnt stabiliration nf thc disturbcd aic.a. <br /> � ('m�diriun.c nJ l Cce Whcre sto�m drain inlets are to bc madc opermional hcfbrc pcnnancnt <br /> stabiliza�ion of Ihc diswrbcd drainage arca. Protcction should bc pro�'idcd <br /> for all sloim drain inlcts doa�nslopc and �vithin 500 fcct ot�a dis�urbcd or <br /> � consu uclion arca, unlcss thc runoff that cntcrs the catch basin will bc <br /> comcy�a ��> d s�a„»�„�n�„a ��� u��. i„i�� n������u�,�, �»�y bc uscd <br /> anywherc to protect thc drainagc systcm. 1t is likcly that the dr�in:�gc <br /> ' syslcm will still rcquirc cicaning. <br /> Tablc 49 lists scvcr�l options for inlct protection. All of the mcthods tor <br /> stonn drain inlct protection are pronc to plugging and require a high <br /> 1 Gcqucncy of maintenance. Drainage areas should bc limited to I acrc or <br /> Icss. Gmcrgency ovcrllows may bc rcquircd ���hcre stonnwatcr ponding <br /> would causc a hazard. if an cmcrgcncy w�erllo�v is providcd, additional <br /> � cnd-of-pipe ircaUncnt inay bc required. <br /> Table 4.9 <br /> Storm Drain Inlet Protetfon <br /> � Applicable for <br /> Type of Inlet Emergency Pavedl Earthen <br /> Protection Overflow Suriaces Conditions of Use <br /> O Dro Iiilet P�rotectimi <br /> AE�cavated drop inlet l'es. G:uthen Applicable fm• he:+vy ilows. F.:+sy <br /> protection lempm•ary Lo mi�intain. Large area <br /> Ilooding ���ill RequiremenL '30'\ 30'/acre <br /> � occtu� <br /> 131uck aud gravel drop 1'es P�cr.d nr Earthen :lpplicuble for hea����coamnh•�t�d <br /> inlet proLecUon floa�s. �'�'ill not pond. <br /> I Gra��el and wire drop No rlpplicable for heavy concentrated <br /> inl�t �>rotection Oo�vs. Will pond. Can H•ilhstand <br /> truffic. <br /> � Catch basin filters 1'es Yaved or Larthen Fre uent maintenance re uired. <br /> CurU Inlet Protectimi <br /> � Curb in1M�n�otection Small capacity Paved Used fm•s[w•dy, mmr cmnpact <br /> �vith a wooden �vcir overtlow installation. <br /> Block and grnvel curb 1'es 1'aved Slurdy. but limiled filtrution. � <br /> f . inlet proLectim� <br /> � Cuh�ert Inlet I'rotectiou <br /> Culvcrl inlet sedimen� 18 monlh especled life. <br /> - tr� � __.�...._--,.�..� �..�� --a,a� <br /> ...���a_,.._-_-..•--_":--- ,.._.__. __..,.._.�..t�_ <br /> � <br /> I <br /> Iq.g2 Volume ll—Consiruction Sformwaler Pollufion Prevenfion February 2005 <br /> �, 1 <br /> i � <br />