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Line 1: − __NOTOC__+ − − {{TextBox − |text=<span style="font-size:12%; line-height: 2.1em;">|1=<div class="center" style="width: auto; margin-left: auto; margin-right: auto;">[[#A|A]], [[#B|B]], [[#C|C]], [[#D|D]], [[#E|E]], [[#F|F]], [[#G|G]], [[#H|H]], [[#I|I]], [[#J|J]], [[#K|K]], [[#L|L]], [[#M|M]], [[#N|N]], [[#O|O]], [[#P|P]], [[#Q|Q]], [[#R|R]], [[#S|S]], [[#T|T]], [[#U|U]], [[#V|V]], [[#W|W]], [[#X|X]], [[#Y|Y]], [[#Z|Z]]</div>}} − − − = A = − === Aggregate === − A broad category of particulate material used in construction, including sand, − gravel, crushed stone, slag, recycled concrete and geosynthetic aggregates, and available in − various particulate size gradations. − − = B = − === Berm === − A compacted earthen wall that diverts runoff or creates shallow ponding of runoff. In − some cases, runoff ponds behind the berm and gradually flows through it or is infiltrated. − − === Biofilter === − A bioretention stormwater best management practice featuring an impermeable liner − and underdrain that prevents infiltration of runoff into the underlying native soil; provides − sedimentation and filtration of urban runoff as it passes through the mulch layer, engineered − filter media and vegetation root zone. − − === Bioretention === − A stormwater filtration and infiltration practice. The practice is a shallow − excavated surface depression containing a prepared soil mix, mulch, and planted with specially − selected vegetation. The system is engineered to temporarily store runoff in the depression and − gradually filters it through the mulch, engineered soil mix, and root zone. They remove − pollutants from runoff through filtration in the soil and uptake by plant roots and can help to − reduce runoff volume through evapotranspiration and infiltration. − − = C = − === Check Dam === − Structures constructed of a non-erosive material, such as suitably sized − aggregate, wood, gabions, riprap, or concrete, used to slow runoff water to allow sedimentation, − filtration, evapotranspiration, and infiltration into the underlying native soil. Can be employed in − practices such as dry and enhanced grass swales. − − === Cistern === − Tank used to store rainwater (typically roof runoff) for later use. − − = D = − === Depression Storage === − A technique for incorporating shallow depressed areas into urban − landscaped areas for storing and infiltrating runoff. Typically, depression storage areas are − small and have limited capacity and limited duration of retention in order to address property − owner concerns relating to insects, damage to structures and inconvenience of ponded water on − their property. − − === Detention === − The temporary storage of stormwater to control discharge rates, and allow for − sedimentation. − − === Drawdown Time === − The period between the maximum water level and the minimum level (dryweather − or antecedent level). − − === Dry Swale === − Linear bioretention cells designed to convey, treat and attenuate stormwater runoff; − The engineered filter media soil mixture and vegetation slows the runoff water to allow − sedimentation, filtration through the root zone, evapotranspiration, and infiltration into the − underlying native soil. − − = E= − === Evapotranspiration === − The combined loss of water to the atmosphere from land and water − surfaces by evaporation and from plants by transpiration. − − === Enhanced Grass Swale === − Vegetated open channels designed to convey, treat and attenuate − stormwater runoff, also referred to as enhanced vegetated swales. Enhanced grass swales are − not capable of providing the same water balance and water quality benefits as dry swales, as − they lack the engineered soil media and storage capacity. − − === Environmental Impact Report (EIR) === − The evaluation of the possible effects that may arise from a − proposed project on the environment, together consisting of the natural, social and economic − aspects. − − === Exfiltration === − Loss of water from a drainage system as a result of percolation or absorption into − the surrounding medium (e.g., the infiltration of water into the native soil through a perforated − pipe wall as it is conveyed). − − = F = − − = G = − − = H = − − = I = − − = J = − − = K = − − = L = − − = M = − − = N = − − = O = − − = P = − − = Q = − − = R = − − = S = − − = T = − − = U = − − = V = − − = W = − − = X = − − = Y = − − = Z =
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