Permeable Pavement Maintenance for Homeowners - Environment
Permeable Pavement Maintenance for Homeowners Permeable pavement must be maintained. Prior to submitting your annual Stormwater Management Facility Operation and Maintenance Inspection Form, use this fact sheet to review your pavement and ensure it is in compliance.
Permeable Pavement: A regulated hard surface designed to allow stormwater to infiltrate into the ground.
An “A+” Pavement In this example:
Space between the pavers is free of debris—no weeds, dirt, grass clippings, leaves, etc.
Bedding layer is flush with the top of the pavers.
Pavers are firmly in place. There isn’t any evidence of paver disturbance or shifting.
Common Pavement Errors If you notice these issues, correct them prior to submitting your form.
Broken or shifted pavers. Broken pavers must be replaced. Areas of shifting or sinking must be re-installed.
Use of sand. #8 or #9 stone are the only acceptable materials for the space between the pavers.
Clogged pavement. Weeds appear when maintenance has been neglected and sediment and seeds have had a chance to become established. Leaves, dirt, and other debris should not be between the pavers. Pervious concrete must also be free of debris.
[email protected] Department of Environmental Services 2100 Clarendon Blvd, Suite 705, Arlington, VA 22201
Key Elements of Permeable Pavement Permeable Paver Cross Section Pavers
Edge restraint Bedding Layer
Reservoir Layer
Observation Well Geotextile Fabric
Subgrade
Pervious Concrete Cross Section Pervious Concrete Reservoir Layer Geotextile Fabric
Edge restraint Observation Well Subgrade
Bedding Layer—Only used with a paver installation, 2 inches of washed #8 stone below the pavers.
Edge Restraint—Plastic, metal, or concrete edge ensures the pavers are held tightly in place and are unable to shift or move. Geotextile Fabric—A non-woven geotextile that separates the reservoir stone layer from the subgrade soil layer. This fabric will allow water to flow through, into the subgrade. Observation Well—A PVC pipe that extends vertically to the bottom of the reservoir layer and is fitted with a cap installed flush with the pavement surface. Used for periodic inspection of facility to observe drawdown rate within the reservoir layer following a storm event. Permeable Paver—Top layer that is visible. Water infiltrates through the #8 or #9 stone that is between the pavers.
Pervious Concrete—Top layer that is visible. Water infiltrates through the pores in the concrete. Reservoir Layer—6-12 inches of #57 stone where water is temporarily stored as it infiltrates into the ground. Subgrade—Base soil layer. Permeable Pavement Design Criteria: Stormwater Manual: A Guide to Stormwater Requirements for Land Disturbing Activities in Arlington County Virginia DCR 2013 Design Specification No. 7 Permeable Pavement, version 2.0
Paver Maintenance: Pervious Paver Maintenance
Permeable Pavement: A regulated hard surface designed to allow stormwater to infiltrate into the ground.
An “A+” Pavement In this example:
Space between the pavers is free of debris—no weeds, dirt, grass clippings, leaves, etc.
Bedding layer is flush with the top of the pavers.
Pavers are firmly in place. There isn’t any evidence of paver disturbance or shifting.
Common Pavement Errors If you notice these issues, correct them prior to submitting your form.
Broken or shifted pavers. Broken pavers must be replaced. Areas of shifting or sinking must be re-installed.
Use of sand. #8 or #9 stone are the only acceptable materials for the space between the pavers.
Clogged pavement. Weeds appear when maintenance has been neglected and sediment and seeds have had a chance to become established. Leaves, dirt, and other debris should not be between the pavers. Pervious concrete must also be free of debris.
[email protected] Department of Environmental Services 2100 Clarendon Blvd, Suite 705, Arlington, VA 22201
Key Elements of Permeable Pavement Permeable Paver Cross Section Pavers
Edge restraint Bedding Layer
Reservoir Layer
Observation Well Geotextile Fabric
Subgrade
Pervious Concrete Cross Section Pervious Concrete Reservoir Layer Geotextile Fabric
Edge restraint Observation Well Subgrade
Bedding Layer—Only used with a paver installation, 2 inches of washed #8 stone below the pavers.
Edge Restraint—Plastic, metal, or concrete edge ensures the pavers are held tightly in place and are unable to shift or move. Geotextile Fabric—A non-woven geotextile that separates the reservoir stone layer from the subgrade soil layer. This fabric will allow water to flow through, into the subgrade. Observation Well—A PVC pipe that extends vertically to the bottom of the reservoir layer and is fitted with a cap installed flush with the pavement surface. Used for periodic inspection of facility to observe drawdown rate within the reservoir layer following a storm event. Permeable Paver—Top layer that is visible. Water infiltrates through the #8 or #9 stone that is between the pavers.
Pervious Concrete—Top layer that is visible. Water infiltrates through the pores in the concrete. Reservoir Layer—6-12 inches of #57 stone where water is temporarily stored as it infiltrates into the ground. Subgrade—Base soil layer. Permeable Pavement Design Criteria: Stormwater Manual: A Guide to Stormwater Requirements for Land Disturbing Activities in Arlington County Virginia DCR 2013 Design Specification No. 7 Permeable Pavement, version 2.0
Paver Maintenance: Pervious Paver Maintenance
