DRAFT GreenPoint Rated Existing Home Rating Manual version 6.0 | Página 15

A ? ? Site Grade the sidewalks, driveways, and all other hardscape so all water flowing off of 90% of the hardscape surfaces flows through landscaped areas before reaching the street. Design and grade the landscape adjacent to the hardscape areas to receive and manage stormwater runoff. Use curb cuts, bridged driveways, or perforated curbs to direct water from the street into the landscape before reaching storm drains. Include “Drains to Bay” or “Drains to Creek” signage at storm drains where applicable. VERIFICATION Measures A5.1, A5.3, and A5.4 Field Verification: The Rater must collect representative photos of materials used for hardscape, roof, and/or driveway design. Documentation: The Rater must collect the following: ? ? ? A site plan with pavement types, roofing material, or driveway design, as appropriate Area calculations for permeable paving, as appropriate Verification that flashing and solder do not include lead Measure A5.2 Plan Review: The Rater must complete a plan review of filtration and bio-retention features. Field Verification: The Rater will conduct field compliance verification and take representative photos of stormwater features installed. Documentation: The Rater must collect the following: ? ? Calculations of treated stormwater runoff An Accountability Form with criteria signed by the builder, engineer, or other appropriate expert, along with any other requested supporting documentation INTENT To reduce the quantity of and improve the quality of stormwater leaving the project site. To filter and retain stormwater on site to recharge groundwater. A6. STORMWATER CONTROL: PERFORMANCE PATH CRITERIA FOR QUALIFICATION Three points of credit are available for pe rforming a soil percolation test to evaluate the soil capacity. Use best sustainable stormwater management practices to capture and treat 85% of total annual runoff for the entire site area. VERIFICATION Field Verification: The Rater will conduct field compliance verification and take representative photos of stormwater features installed. GreenPoint Rated Existing Home Rating Manual Version 6.0, September 2013 © Build It Green 9