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Exhibit C
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<br /> Figure 3.Residential construction increases the likelihood of sediment accumulation in permeable pavements(left).A pervi-
<br /> ous asphalt pavement near Philadelphia,PA,is clogged due to runoff from an adjoining area that was not stabilized(right).
<br /> placed upon snow and ice and is later plowed to a loca- (2)preventive street sweeping,(3)weeding,and(4)stain
<br /> tion that drains to or on top of permeable pavement, a removal.Additionally, some pavement type-specific tasks
<br /> clogging source is introduced to the pavement. Either include: (1)restorative street sweeping and(2)mowing.
<br /> (1) preventing the stockpiling of snow on permeable Each ofthose inspection and maintenance activities
<br /> pavement or(2) requiring post-event street sweeper is discussed in more detail.
<br /> maintenance (discussed later) are two options of limit-
<br /> ing winter weather induced clogging. It15peCti01�
<br /> Regular inspection is an essential part of permeable
<br /> PRIMARY 1NSPECTION AND MAINTENANCE pavement maintenance. During the visit the pave-
<br /> TASKS ment's surface can be examined for accumulated dust,
<br /> Permeable pavement maintenance is rather straightfor- sediment, and debris (Figure 4).A simple test to verify
<br /> ward when compared to other stormwater management �'hether the pavement is infiltrating properly is to
<br /> practices(such as bioretention,wet ponds, and stormwa- empty a bucket or large bottle of water on the pave-
<br /> ter wetlands).The common inspection and maintenance ment and examine how long it takes for water to soak
<br /> tasks are: (1)verifying that clogging has not occurred, through the pavement and the "water mark" that is left.
<br /> Pavements that require from several seconds to min-
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<br /> Figure 4.Visual inspection of a pervious concrete lot in Georgia shows accumulation of both sediment and leaf debris(left).
<br /> The fact that the lot is clogged is confirmed by emptying approximately 7 gallon of water on the lot,which subsequently
<br /> runs off rather than infiltrating(right).
<br /> Mainiaining Permeable Pavemenis 3
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