Laserfiche WebLink
f <br /> I <br /> No. 1 —Detention Ponds <br /> IMaintenance Detect Conditions When Maintenance Is Results Expected When <br /> Component Needed Maintenance Is Pertormed <br /> Pond Berms Settlements Any part of berm which has senled 4 Dike is built back to the design <br /> (Dikes) inches lower than the design elevation. <br /> elevation. <br /> If settlement is apparent, measure <br /> berm to determine amount of <br /> settlement. <br /> Settling can be an indicalion o(more <br /> � severe problems wilh lhe berm or <br /> I ouUel works. A licensed civil <br /> engineer should be coi,sulted lo <br /> determine the source oi ihe <br /> ( settlemeN. <br /> Piping Discernable water flow lhrough pond Piping eliminated. Erosion potential <br /> berm. Ongoing erosion with potenlial resolved. <br /> (or erosion to continue. <br /> I (Recommend a Goethechnical <br /> engineer be cal�ed in to inspecl and <br /> evaluale condition and recommend <br /> I repair of condition. <br /> Emergency Tree Growih Tree growlh on emergency spillways Trees should be removed. I(root <br /> Overilow/ r.reates blockage problems and may syslem is small (ba<_e Iess than 4 <br /> Spiliway and cause failure ol Uie bemi due to inches)the root syslem may be IeP.in <br /> � Berms over 4 uncontrolled overtoppiny. place. Othenvise the roots should 6e <br /> (eet in heighL Tme rowlh on bertns over 4 feel in �emoved and the berm restored. A <br /> 9 licensed civil engineer should be <br /> height may lead to piping through Ihe �nsulted for proper bemUspiliway <br /> I berm which could�ead lo faiWre of restoralion. <br /> ihe benn. <br /> Piping Discemat�lc waler flow�hrough pond Piping eliminaled. Erosion potential <br /> benn. Ongoing erosion wilh polenlial resolved. <br /> I (or erosion lo continue. <br /> (Recommend a Goelhechnical <br /> engineer be called in to inspect and <br /> evaluale condition and recomrnend <br /> � repair of�ondilion. <br /> Emergency Emergency Oniy one layer of rock exists above Rocks and pad depth are reslored to <br /> OveAlow/ Ove�low/ native soil in area five square feet or design standards. <br /> Spillway Spillway larger, or any exposure of native soil <br /> ' al lhe top of oul flow palh of spillway. <br /> (Rip-rap on inside slopes need nol be <br /> replaced.) <br /> Erosion See'Side Slapes of Pond" <br /> � � <br /> V <br /> ; 4-32 Volume V—Runoff Treatment BMPs August 2001 <br />