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Permeable pavements are appropriate in many applications where traditionally impermeable pavements have been used. Typical applications for permeable paving include parking lots, sidewalks, pedestrian and bike trails, driveways, residential access roads, and emergency and facility maintenance roads. Limitations: • No run-on from pervious surfaces is preferred. If runoff comes from minor or incidental pervious areas, those areas must be fully stabilized. Unless the pavement, base course, and subgrade have been designed to accept runoff from adjacent impervious surfaces, slope impervious runoff away from the permeable pavement to the maximum extent practicable. Sheet flow from up -gradient impervious areas is not recommended, but permissible if the permeable pavement area is > the impervious pavement area. Soils must not be tracked onto the wear layer or the base course during construction. Infeasibility Criteria: These are conditions that make permeable pavement not required. If a project proponent wishes to use permeable pavement - though not required. to because of these feasibility criteria - they may propose a functional design to the local government. These criteria also apply to impervious pavements that would employ stormwater collection from the surface of impervious pavement with redistribution below the pavement. Citation of any of the following infeasibility criteria must be based on an evaluation of site -specific conditions and a written recommendation from an appropriate licensed professional (e.g, engineer, geologist, hydrogeologist) o Where professional geotechnical evaluation recommends infiltration not be used due to reasonable concerns about erosion, slope failure, or down gradient flooding. o Within an area whose ground water drains into an erosion hazard, or landslide hazard area. o Where infiltrating and ponded water below new permeable pavement area would compromise adjacent impervious pavements. o Where infiltrating water below a new permeable pavement area would threaten existing below grade basements. o Where infiltrating water would threaten shoreline structures such as bulkheads. Volume V — Runoff Treatment BMPs — December 2014 5-18