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STREAM STABILITY STUDY FOR PIPELINES IN HIGH CONSEQUENCE AREAS

STREAM STABILITY STUDY FOR PIPELINES IN HIGH CONSEQUENCE AREAS. By: Larry Blair, PE Eastern Sandoval County Arroyo Flood Control Authority (ESCAFCA) Sandoval County, New Mexico November 5, 2010. COLORADO. OK. ARIZONA. Placitas. TEXAS. A Little History.

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STREAM STABILITY STUDY FOR PIPELINES IN HIGH CONSEQUENCE AREAS

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  1. STREAM STABILITY STUDY FOR PIPELINES IN HIGH CONSEQUENCE AREAS By: Larry Blair, PE Eastern Sandoval County Arroyo Flood Control Authority (ESCAFCA) Sandoval County, New Mexico November 5, 2010

  2. COLORADO OK ARIZONA Placitas TEXAS

  3. A Little History • Sandia Mountains; Rio Grande River; Las Huertas Creek • Village of Placitas • Pipelines

  4. Purpose of Channel Stability Study • Preserve the natural state of the arroyo • Prevent potential problems with exposure of the pipeline

  5. Methodology • Hydrologic Analysis – 30 Years • 2 Yr • 5 Yr • 10 Yr • 25 Yr • 50 Yr • Plus 100 Yr Event • Soils Analysis • Predict Lateral and Vertical Movement

  6. Conclusions • Standards may not be adequate • Stream stability study may be a good tool

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