Permeable pavements will last for years with proper 
construction and maintenance. Maintaining surface infiltration  and resulting ex-filtration is key to long­ term pavement 
performance.

Stormwater collection systems (BMPs) are designed to capture rainwater runoff containing suspended solids, nutrients and pollutants. All these systems require periodic maintenance to insure infiltration and storage capacity. Permeable pavements are no exception. Recent studies indicate that permeable systems using open graded aggregates can retain as much as 20% of their initial infiltration rates even after an extended periods (10 years) without maintenance. This is not to suggest that these systems require no or little maintenance but that the myth of clogging has been exaggerated with permeable segmental pavements.

Clogging is dependent on several factors: traffic frequency, close proximity to sediment, surrounding soil permeability, nearby disturbed soil, and frequency of maintenance. It is important to note that clogging doesn’t mean zero infiltration as noted 
above.

Vacuum trucks designed for pavement cleaning at malls and shopping center parking areas best perform this process. Vacuum equipment with adjustable vacuum suction is preferred because debris removal is more precise and minimizes the amount of chip stone replacement. The pavement system should be dry before cleaning.

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