Client: Seattle Public Utilities
Location: Chester Morris Dam, North Bend, WA

Geotechnical Support

Scope of work included difficult access drilling along the top of the Chester Morris secondary dam.  NQ rock coring was employed using a track mounted Diedrich D-50 rig drilling rig.  Sampling included rock core samples for foundation analysis of the dam substrate.  In addition to difficulty associated with access to drilling locations, drinking water standards had to be observed as far as drilling wastes and runoff.