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Council reviews stream-bank stabilization study; staff asked to return with easement, funding and participation options
Summary
Engineering staff presented a study of stream-bank erosion across Plano, identifying more than 3,000 locations with about 42 rated as critical. The estimated cost to address critical sites is about $10 million; council asked staff to return with easement templates, cost-sharing options and maintenance proposals.
Caleb Thornhill, director of engineering, told the Plano City Council the city studied 127 miles of stream channels and identified more than 3,000 locations that show erosion or bank-stability issues, and that about 70 percent of those locations are on city-owned land. He said the consultant’s scoring system ranges from 0 (worst) to 100 (no action needed), and that roughly 42 locations fell into the critical category (scores 0–20).
Thornhill said his office estimated the cost to address the critical locations at about $10,000,000; of that amount, the estimate for city-owned sites is roughly $6,750,000, with private and HOA-owned portions of the critical total estimated at about $3,450,000 and $150,000, respectively. He gave an example of a large gabion wall project that cost about…
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