Rapid assessment of the cost-effectiveness of low impact development for CSO control

摘要: This paper presents a simple model for assessing the cost-effectiveness of investments in low impact development (LID) reducing combined sewer overflows (CSOs) urban watersheds. LID systems, including green roofs, porous pavement, and stormwater treatment wetlands, are sitespecific controls runoff. If applied throughout watershed, systems like these can reduce amount runoff entering system CSOs. To be conservative, we focus solely on function as management techniques, neglecting other environmental benefits commonly associated with technologies. A is presented that used to simulate CSOs through incremental installation technologies across watersheds, when they introduced alone, or combination conventional CSO abatement The potential reduction resulting from various levels adoption simulated using modified Rational Method. life-cycle cost analysis compare alternatives. Given implementation private property leads reduced CSOs, sharing scheme divides total into fraction (born by owner) public (provided agency). implications such policy discussed reference CSO-shed drains Gowanus Canal (Brooklyn, NY). results indicate individual have differing terms reduction, but under variety performance scenarios subsidy encourage represents cost-effective alternative agencies consider their efforts Future areas research this field outlined. © 2007 Elsevier B.V. All rights reserved.