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1 <br /> i Catch Basins anc! T.nieS:s <br /> ■ �;he;e ,trudures aie typically located in ;Le sltee:s and p�bh= r�gh[-of��•;,;ys. 71:e C�p� is iesponsbie fo: <br /> � �eutine ma�ntenance of the pipes and catch basins in the nghFoi•ways, �•:hile the homeo�+�ners assocat�o,-. a <br /> responsible for keepmg the grates dear of debris�n all areas as well as pipes and catch basins in pnvate <br /> aieas. <br /> � � Part of Complete ' <br /> �Structure To Ok n d Problem Gonditions to Check For What to do �� <br /> � Check (Date/By) _` ! <br /> � �------ -- ---- -- —� -- — —� <br /> During Trash or debns accurnula[ing m <br /> and After Tresh& Remove blocking trash or debr,s j <br /> Grate Ma�or Debris �ront ot the catch basin opening and W�th a rake and dean off the grate. I <br /> Storms not allowing waters ro flow in. <br /> � Vegetation is growmg across and <br /> Grate Quarterly Vegetation blocking m�re lhan 10%af the Remove vegetation. <br /> o basin opening. <br /> p Sedimen[or debris in the basin <br /> 9 should be kept under 50%of the <br /> Catch Basin Quarterly Sediments depth from the bottom of the pipe Clean out the ca[ch basin of <br /> � to the bottom of the basin. Use a sediment and debns. <br /> long s[ick or broom hand�e to poke � <br /> inro sediment and determine de th. <br /> � Tresh or debris in the pipes should <br /> � Inlct and Trash& no[be more than 1�5 0(its heighL Clean out the inle[and outlet pipes � <br /> Outle[Plpes Quarterly Debris Also there should not be any roots from hash, debris, or vegetation. � <br /> or vegetation growin9 in the pipes. I <br /> There should be no cracks wider <br /> ` than 0.5"and longer than 1 toot at <br /> Inle[and Repair cracks or mplace[he 7omL. � <br /> � Ouile[Pipes Annually StrucWral the joint of any inlet or ou0et pipe. Contact the City for technical �, <br /> Damage Also,check for evidence oF , <br /> Join[s sediment entering the calch basin 9uidance. <br /> ( _ through the cracks. , <br /> The grele should no[have any , <br /> I Structural cracks longcr than 2". There should <br /> I Grate Quarcerty Damage not be multiple cracks. There Replace the grale. I <br /> � should bc no opcning wider than <br /> � 78 _ <br /> Ensure that[he/rame is sitting <br /> I flush on top of the concrete <br /> Frame Quarterly Structural structure(slab). A separation o( Repair or replam the(rame so that <br /> IDamage more than 3/4" behveen the frame it is Oush with lhe slab. I <br /> iand the slab should be mrrected. <br /> I Inspect Ihe walls of the catch basin I <br /> for cracks wider than 0.5"and � <br /> Structurel �onger than 3 feet. Also check for Repair or replace the basin. I <br /> Cakh Basin Annually evidence of sediment entering the Contact a professional engineer for � <br /> ( Damage �atch basin through the cracks. evalua[ion. <br /> Detcrmine whether or not[he <br /> strutture is sound. <br /> I There shoutd be no chemicals such Clea�w[iatci� basin. Cuntect <br /> Pollution as naturel gas, oil, and gasoline in Thurston Counry Environmental <br /> Catch Basin Quarterly and Fire the ca[ch basin, Check for Health if yau detect a color, odor, <br /> Hazard obnoxious color, odor, or oiiy or oily sludge. <br /> Is�ud e. <br /> January 2005 Volume 1—Minimum Technical Requiremenfs G2-t0 <br />, � <br /> ( ��� <br />