EXH 386: Field Notes – Ace Airport View Site Visit, Des Moines Creek Outfall & Wetland Obs, Jan 28 2001

Field notes dated 1/28/01 document an inspection of Ace Airport View, recording observations at a stormwater detention station (DM1 - Monitoring Station) near Des Moines Creek. The inspector noted a turbid outfall at SDS-1 in the southwest, associated wetlands, steep sides, and the presence of an oil boom, with water samples collected at 11:45 AM by Dr. Strand. Additional notes reference a southwest pond draining adjacent to the creek, clogging of material at outfall infrastructure, and embankment flows requiring attention to discharge locations.

Notes

Exhibit 386 (AR 021699–021701), handwritten field notes from a site visit dated 1/28/01 at Ace Airport View, Des Moines, documenting DM1 Monitoring Station observations. Notes record SDS 1 outfall in SW associated wetlands, steep sides, turbid water with boulders/stones, Old Boom present, water turbid from outfall significantly more so than ambient water at 11:45 AM. Second page records SW pond outfall instrumentation gone, SW pond adjacent to creek draining from creek, water draining to grated inlet, separation of SW pond from creek, no photos yet. Third page references comment letter on embankment flows, foster/hopper attenuation, non-point discharge locations for flows, and clogging of material. Filed as PCHB exhibit in Third Runway EIS administrative record.

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