FW: Wind Gauges

From: Andy Peters

Sent: Fri Aug 31 10:55:05 2018

To: Gerald Fisher

Subject: FW: Wind Gauges

Importance: Normal

Answer to your question.

Andy Peters

City of Molalla

Public Works Operations Supervisor

(503) 829-6855 x220

Cell: 503-793-0507

apeters@cityofmolalla.com

117 N Molalla Ave

Molalla, OR 97038

From: Jeff Mccrum

Sent: Friday, August 31, 2018 10:28 AM

To: Andy Peters <apeters@cityofmolalla.com>

Cc: Ryan Hepler <rhepler@cityofmolalla.com>

Subject: RE: Wind Gauges

Andy,

We have a Davis Vantage Pro weather station here at the WTP. We only use it for the 24-hour precipitation totals, but it does have wind direction and speed reading too. I have no information regarding calibration though.

Jeff

From: Andy Peters

Sent: Friday, August 31, 2018 10:03 AM

To: Ryan Hepler <rhepler@cityofmolalla.com>; Jake Ehredt <jehredt@cityofmolalla.com>

Cc: Jeff Mccrum <jmccrum@cityofmolalla.com>; James Clifton <jclifton@cityofmolalla.com>; Jaimee Searcy <jsearcy@cityofmolalla.com>

Subject: Wind Gauges

Good Morning Folks! We are having trouble with DEQ approvals of the new recycled water use plan because they aren’t satisfied with the Cities’ approach to measuring wind speed and direction. Can you guys please help us be getting something together showing:

1. The exact equipment we have at both plants, or anything else we use, to determine windspeed/direction
2. Include makes/models where possible
3. Include any steps we take to calibrate this equipment (if ever)
4. Tell us how often we read these gauges and where/how they are recorded

Even with this information we may still need to begin verifying wind speed and direction on the ground using a handheld device in the field, but I won’t know until we can tell DEQ exactly what we are doing.

Thanks for the help with this!