Latest niche market: corrugated plastic pipe

lAonracra oriented building marerVial and hardware dealers bave sold small diameter comrgated plastic pipe for years to light backhoe contractors serving tbe septic tank and landscape and fann drain markets.

Now a new niche martet is developing for large dianeter comrgated plastic pipe. "A recently completed telephone poll of state highway departments sbows that 70% now approve large diameter (over 12") HDPE (high density polyethylene) corrugated plastic pipes for either slope or culvert drainage or both," Houston Crumpler, Crumpler Plastic Pipe, Inc., Roseboro, N.C., reports. "The combination of increased engineering acceptance of large flexible plastic pipe and the national cry for improved water quality standards is opening up market opportunities."

Industrial, urban and agricultural development has left impervious roads, parking lots, airpors, factories, buildings, open srip mines, clear cut forest land and farm ftelds, all sloping toward water run-off outlet streams lhat become polluted because nature's "soil plant" sediment filter systems have been sripped away.

"Society is faced with the dilemma of decreasing options," Crumpler says. "On tle one hand, we cannot exist without Oese features, and, on the other, we cannot adequately project ounelves into the future without clean water tesour@s." This requires land use engineers to develop more exacting environmentally safe technologies that allow for sustainable growth while minimizing conflict between environmental and land change needs.

Controlled drainage systems that mimic nature's soil plant filter sys-

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