Presentation Title

Pavement that Can Clean Water

Start Date

2-5-2018 3:20 PM

End Date

2-5-2018 3:30 PM

Abstract

Pervious pavement allows rain water to soak through it rather than running off. This type of pavement is known to reduce polluted stormwater runoff going to urban streams by infiltrating water into the soil below. But can it have benefits in areas where the soil drains too slowly for infiltration? We studied water quality and road conditions from test sections of pervious pavement on a large arterial road in Gresham, Oregon that is on top of slowly draining soil. We compared road sections of: A) conventional asphalt, B) 8”-think pervious pavement with an underdrain, and C) 3”-think pervious pavement on top of conventional asphalt. We found that runoff from both types of pervious pavement had lower levels of several pollutants of concern than runoff from conventional asphalt, including sediment, bacteria, nutrients, and heavy metals. The pollutant reduction of the pervious pavement was found to be similar to, or even higher than, reductions from other stormwater management practices in Gresham. Additionally, we noted that both types of pervious pavement had fewer potholes, less road spray, and less road noise than the conventional asphalt. This study indicates that pervious pavement can have multiple benefits to urban stream water quality as well as local road conditions, even when the soil below it drains too slowly for infiltration.

Subjects

Sustainable development, Transportation, Water quality

Persistent Identifier

https://archives.pdx.edu/ds/psu/25647

Rights

© Copyright the author(s)

IN COPYRIGHT:
http://rightsstatements.org/vocab/InC/1.0/
This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).

DISCLAIMER:
The purpose of this statement is to help the public understand how this Item may be used. When there is a (non-standard) License or contract that governs re-use of the associated Item, this statement only summarizes the effects of some of its terms. It is not a License, and should not be used to license your Work. To license your own Work, use a License offered at https://creativecommons.org/

This document is currently not available here.

Share

COinS
 
Feb 5th, 3:20 PM Feb 5th, 3:30 PM

Pavement that Can Clean Water

Pervious pavement allows rain water to soak through it rather than running off. This type of pavement is known to reduce polluted stormwater runoff going to urban streams by infiltrating water into the soil below. But can it have benefits in areas where the soil drains too slowly for infiltration? We studied water quality and road conditions from test sections of pervious pavement on a large arterial road in Gresham, Oregon that is on top of slowly draining soil. We compared road sections of: A) conventional asphalt, B) 8”-think pervious pavement with an underdrain, and C) 3”-think pervious pavement on top of conventional asphalt. We found that runoff from both types of pervious pavement had lower levels of several pollutants of concern than runoff from conventional asphalt, including sediment, bacteria, nutrients, and heavy metals. The pollutant reduction of the pervious pavement was found to be similar to, or even higher than, reductions from other stormwater management practices in Gresham. Additionally, we noted that both types of pervious pavement had fewer potholes, less road spray, and less road noise than the conventional asphalt. This study indicates that pervious pavement can have multiple benefits to urban stream water quality as well as local road conditions, even when the soil below it drains too slowly for infiltration.