New Search
08/22/95 TUE 09:41 FAX <br /> WOODWARD CLYDE 03005 <br /> • <br /> 3.1 Finding Suitable Locations for Facilities <br /> On -Site Facilities: In the past, many jurisdictions have required developers to construct <br /> on -site facilities (usually detention basins) to control drainage from their development. <br /> These on -site facilities have typically been constructed according specific ife developer as <br /> standards and have typically been located (i.e., sited) at the discretion <br /> opposed to the jurisdiction selecting an appropriate location. Recently, many <br /> n of stormwater <br /> jurisdictions have included additional requirements for the con tr t ti os that developers <br /> quality treatment facilities. A disadvantage to these on -site fac it <br /> are often resistant to devoting buildable lands for their construction. <br /> An advantage to on -site facilities is that they are usually easy to site because they are used <br /> to treat relatively small drainage areas and therefore require less space than regional <br /> facilities. In some cases, they may not require any additional space all g <br /> For ex <br /> rxan le, <br /> they may be constructed in the medians of parking lots, on roof tops, <br /> However, in general, the total amount of space required for numerous ite faclitres facility <br /> a watershed is likely to be greater than the amount of space require d for a regional <br /> in the same watershed. <br /> A disadvantage to on -site controls is that they may require the use of h density ti of and <br /> buildable lands. This use of buildable lands may present conflicts with goals <br /> within the Eugene Urban Growth Boundary. <br /> es, <br /> Another disadvantage is that in some cases, site- specific constraints (e.g., step s s p om <br /> soil types, sensitive natural resource areas, limited space) may prevent developers <br /> finding suitable locations for stormwater facilities. In these cases, a regional facility <br /> would be advantageous. <br /> Regional Facilities: As opposed to on -site facilities, regional facilities may be more <br /> strategically located in a watershed to provide economies of scale However, es t finding the use of <br /> strategic locations that are available is one of the largest hurdles respect <br /> facilities. Typically a large amount of space is required near the in wetland downstream end <br /> of a watershed, and the most appropriate locations are often inshream or or <br /> riparian areas adjacent to streams. When this is the case, <br /> Federal and State permits may <br /> be required for construction (e.g., a wetlands 404 permit). Having to obtain these permits <br /> can add a significant amount of time (sometimes years) to the siting process, and in the <br /> end there are no guarantees that permits will be issued. In addition to problems <br /> associated with permitting, some communities are finding that the most suiiablo -sites are <br /> off limits because they have already been designated as wetland mitigation sites for past <br /> developments. <br /> Another disadvantage associated with the siting of regional facilities is that, u t eir <br /> large space requirements, jurisdictions will typically have to acquire portions condemnation <br /> lands. Acquiring private lands can be expensive and it can lead to property <br /> issues which may leave a jurisdiction vulnerable to legal challenges. The Denver Urban <br /> 4 <br />