EPA Science Inventory

Hydrologic and Pollutant Removal Performance of a Full-Scale, Fully Functional Permeable Pavement Parking Lot - paper

Citation:

BORST, M., T. P. OCONNOR, A. Rowe, AND E. K. Stander. Hydrologic and Pollutant Removal Performance of a Full-Scale, Fully Functional Permeable Pavement Parking Lot - paper. In Proceedings, WEFTEC 2011, Los Angeles, CA, October 17 - 19, 2011. Water Environment Federation, Alexandria, VA, Session 3, (2011).

Description:

To meet the need for long-term, full-scale, replicated studies of permeable pavement systems used in their intended application (parking lot, roadway, etc.) across a range of climatic events, daily usage conditions, and maintenance regimes to evaluate these systems, the EPA’s Urban Watershed Management Branch (UWMB) installed an instrumented, fully functional, 110-space pervious pavement parking lot to be used by EPA facility staff. The UWMB is monitoringwater quantity and quality parameters in side-by-side porous asphalt (PA), porous concrete (PC), and permeable interlocking concrete paver (ICP) systems. The monitoring plan allows the EPA to document the performance of the three permeable pavements, identify environmental stressors in the infiltrate, and measure infiltrate volume. This site is equipped for long-term monitoring and the effect of regular maintenance will be investigated by examining changes in surface infiltration rates with time. Preliminary results indicate no significant changes in surface infiltration rates of the three permeable surfaces during the first year of use. Surface infiltration rates are significantly different among the three surfaces, with the PC having the largest measured rate and PA the lowest rate. Infiltrate from ICP had significantly larger SSC concentrations than infiltrate from PC and PA. This pattern may be explained by larger void spaces in the small aggregate (AASHTO #8 and #57) bedding and choking layers compared to the pore spaces in the PC and PA surfaces. Infiltrate heavy metals concentrations were measured across a broad spectrum of heavy metals, with varied results.

Purpose/Objective:

To inform the public.

URLs/Downloads:

Proceedings Access   Exit

Record Details:

Record Type: DOCUMENT (PAPER IN NON-EPA PROCEEDINGS)
Start Date: 10/17/2011
Completion Date: 10/17/2011
Record Last Revised: 01/26/2012
Record Created: 10/14/2011
Record Released: 10/14/2011
OMB Category: Other
Record ID: 238925

Organization:

U.S. ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RESEARCH AND DEVELOPMENT

NATIONAL RISK MANAGEMENT RESEARCH LABORATORY

WATER SUPPLY AND WATER RESOURCES DIVISION

URBAN WATERSHED MANAGEMENT BRANCH