‘Green’ as­phalt

The Glengarry News - - Front Page -

Per­me­able pave­ment could one day be com­ing to a street or road near you as mu­nic­i­pal­i­ties put a LID on rain runoff.

Over 120 re­gional mu­nic­i­pal staff, engi­neers and con­ser­va­tion pro­fes­sion­als at­tended a train­ing con­fer­ence in Ottawa to learn more about the sus­tain­able green in­fra­struc­ture prac­tice known as Low Im­pact De­vel­op­ment (LID).

LID is a stormwa­ter man­age­ment strat­egy that mit­i­gates the im­pacts of increased runoff in ur­ban ar­eas and stormwa­ter pol­lu­tion by man­ag­ing runoff as close to its source as pos­si­ble.

Some mea­sures in­clude per­me­able pave­ments, rain­wa­ter har­vest­ing and grass swales, which can re­duce the risks of flash flood­ing in com­mu­ni­ties and can im­prove wa­ter qual­ity and habitat by min­i­miz­ing pol­lu­tion.

“We’re hop­ing that our col­leagues will walk away with some new ideas in mind for fu­ture LID projects,” says San­dra Mancini, En­gi­neer­ing Team Lead with South Na­tion Con­ser­va­tion, one of the agen­cies or­ga­niz­ing the meet­ing.

At its head of­fice in Finch, SNC re­cently in­stalled a per­me­able park­ing lot which will also serve as a re­gional LID demon­stra­tion site.

The as­phalt used in the project al­lows rain wa­ter to in­fil­trate into the ground rather than hav­ing it flow to into a nearby storm pond. Fund­ing was re­ceived through the Great Lakes Guardian Com­mu­nity Fund.

“LID projects can vis­ually, eco­nom­i­cally and en­vi­ron­men­tally ben­e­fit the com­mu­ni­ties in which they are im­ple­mented,” ex­plains Ms. Mancini.

“Rather than hav­ing rain wa­ter pour off your drive­way and flood your street or your yard, it can get soaked through per­me­able pave­ment and into the ground.”

Cur­rently the Ontario govern­ment is de­vel­op­ing guide­lines for LID; an in­creas­ing num­ber of mu­nic­i­pal­i­ties are em­brac­ing LID projects in their com­mu­ni­ties.

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