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Esisda;Riparian Petenalal stream <br /> y F"e":. 100 ram. vAdn Stormwater Measures to Form Greenways <br /> `4 r <br /> Y �f• <br /> "a <br /> seWa�pter Me.6. <br /> ,�Cf+ • y4 .u Jar In/t(tmHea > <br /> /(- <br /> _ f i' a <br /> (+Awa el for Seaffnew Control 3 <br /> rr I L W Spread-f►Dbdmw <br /> Diwerdon to <br /> �� R/padns Forest Buff- <br /> it Desip Snore Deorndw Basin <br /> Steep Skp Ame lei <br /> eonseracw wood]wedam ° <br /> °uh LVt&adan rNaelm <br /> �/ • 1�: �Draadp Bew <br /> j"n \ <br /> Re%nsw4°A Y ombewfor <br /> Sed swat control <br /> / 3Y7 <br /> \\. <br /> Riparian Form <br /> Seded ' <br /> peneneul7 Fioeded a <br /> upkaw widow(Old 1i � w(w' ST: with ckdam <br /> sbv srep Ann <br /> Figure 8.The linkage of stormwater management measures forms greenways in the landscape.A <br /> �.� perennial stream and flooded wetland are surrounded with a forest buffer.Stormwater conveyed <br /> through a grassy swale flows through a forebay and an extended detention basin before infiltrating <br /> through a constructed woody wetland with infiltration trenches.In the system above,all small flows are <br /> Infiltrated while larger flows are detained and slowly released. <br /> schedule of inspections, requirements for a tions (Section 319 of the Clean Water Act), <br /> performance bond, penalties for non com- and runoff control under the Coastal Zone <br /> pliance, and an appeal process. Act Reauthorization Amendments of 1990. <br /> There are many benefits to such an ordi- Success of any of these programs depends <br /> nance. For the developer, it sets a rationale on municipal decision makers and their per- <br /> that will apply equally to every applicant. ception of the advantages of combining <br /> For residents of the municipality it is the ve- management measures into open space sys- <br /> hicle through which water resources are tems as well as the public benefits of clean <br /> being protected. Steps that are lacking in water. <br /> most current ordinances are a pre- and <br /> post-development assessment of streams that Open space greenways through <br /> receive stormwater discharges, a review of stormwater management <br /> safety and aesthetic considerations of the de- <br /> sign, a requirement for rigorous inspection <br /> during construction, an "as built" documen- Stormwater management measures pre- <br /> tation of "hard" elements, annual inspec- sented here can be linked to form functional <br /> tions, and the testing of measures (BMPs) in landscape elements on development sites <br /> comparison with pre-development condi- and combined to form continuous stream <br /> tions. What is lacking most of all, is a holis- valley systems or greenways. This opportu- <br /> tic approach that goes beyond peak flow nity was realized in London Grove 'Town- <br /> control. ---- — ship, Pennsylvania, (10)and Loudoun Coun- <br /> ­�- rmwater management and nonpoint ty, Virginia, (9)where the author worked as <br /> pollution control have long been a concern a consultant, gaining the experience on <br /> of the states and of the federal government. which this article is based. <br /> Examples are the new NPDES permit regula- A plan and ordinance ensures that <br /> 20 JOURNAL OF SOIL AND WATER CONSERVATION <br />