JMA02P003 262 270 Main Street Development Stormwater Management Report

3.3 Impervious Area Management New impervious surfaces at a development site can have the greatest adverse effect on groundwater recharge and stormwater quality and quantity. This section of the checklist helps identify those nonstructural strategies and LID-BMPs that have been incorporated into a proposed development’s design to comprehensively manage the extent and impacts of new impervious surfaces. A. Specify impervious cover at site: Existing: 99% Proposed: 97% B. Specify maximum site impervious coverage allowed by regulations: 75% C. Compare proposed street cartway widths with those required by regulations: Proposed Cartway Required Cartway Type of Street Width (feet) Width (feet) Residential access – low intensity Residential access – medium intensity Residential access – high intensity with parking Residential access – high intensity without parking Neighborhood Minor collector – low intensity without parking Minor collector – with one parking lane Minor collector – with two parking lanes 24 24 Minor collector – without parking Major collector D. Compare proposed parking space dimensions with those required by regulations: Proposed: 9' x 18' Regulations: 9' x 18' E. Compare proposed number of parking spaces with those required by regulations: Proposed: 43 Regulations: 48 New Jersey Stormwater BMP Manual • Appendix A: Low Impact Development Checklist • February 2004 • Page A-8