Hi Troy,
I wanted to check in regarding the costs for the additional work per DEQ’s request. This work was approved by council, so I may need to provide an update with the new total estimate.
Regards,
Jennifer Cline, P.E.
City of Molalla
Public Works Director
O: 503.759.0218
F: 503.829.3676
"From: Jennifer Cline [mailto:jcline@cityofmolalla.com]
Sent: Monday, February 09, 2015 4:51 PM
To: Randy J. B; Troy Collison
Cc: Jonathan Patrick; Erik Moorhouse; Jake Ehredt; Mark Lietzke
Subject: RE: Molalla - pH and Temp monitoring plans.
Can you provide a separate quote for the work please?
Jennifer Cline, P.E.
City of Molalla
Public Works Director
O: 503.759.0218
F: 503.829.3676
From: Randy J. B [mailto:rjb@industrialsystems-inc.com]
Sent: Monday, February 09, 2015 11:03 AM
To: Jennifer Cline; Troy Collison
Cc: Jonathan Patrick; Erik Moorhouse; Jake Ehredt; Mark Lietzke
Subject: RE: Molalla - pH and Temp monitoring plans.
Jennifer,
The DEQ requests would not be a concern for getting the work accomplished but would add a bit to our scope of work.
To set the probe up for a dry run or test period we would need an additional site visit and temporary wiring by our electrician and SCADA/PLC programmer. They would then need to return to finish the work later after the temporary installation has proved itself.
To move the pH probe downstream of the screen it would require an additional length of conduit and cable to be run on the surface from the location now shown.
We can track these costs separately and add to the invoice per the rate schedule attached to the quotation.
Thank you,
Randal J. Bos
5835 NE 122nd Avenue, Suite #110
Portland, Oregon 97230
http://www.industrialsystems-inc.com
Phone: 503.262.0367 x- 305
Cell: 360.904.7087
Fax: 503.262.0371
CCB # 196597 WA #INDUSSI880K9
From: Jennifer Cline [mailto:jcline@cityofmolalla.com]
Sent: Monday, February 09, 2015 10:31 AM
To: Troy Collison; Randy J. B
Cc: Jonathan Patrick; Erik Moorhouse; Jake Ehredt
Subject: ***UNCHECKED*** FW: Molalla - pH and Temp monitoring plans.
Comments from DEQ below. Any concerns?
Jennifer Cline, P.E.
City of Molalla
Public Works Director
O: 503.759.0218
F: 503.829.3676
From: COLE David [mailto:COLE.David@deq.state.or.us]
Sent: Monday, February 09, 2015 9:53 AM
To: 'Jennifer Cline'
Cc: COLE David
Subject: Molalla - pH and Temp monitoring plans.
Hi Jennifer. Thanks for sending the plans. We find them acceptable, as is. However, please consider that since pH probe tips are susceptible to fouling, even in “clean” river water, we recommend you install the equipment after the screens at the headworks. Also, we recommend you perform a “dry run”, or pilot test, and see how well it performs in a temporary location, before you install it permanently.
From: Jennifer Cline [mailto:jcline@cityofmolalla.com]
Sent: Monday, February 09, 2015 8:02 AM
To: COLE David
Cc: 'Jonathan Patrick'; Erik Moorhouse; Jake Ehredt; Dan Huff; 'J.W. Ring'; 'Troy Collison'
Subject: Molalla - pH and Temp monitoring requirements.
Hi David,
Attached are 70% design plans for the following pH and river temp monitoring locations to meet the current NPDES Permit #101514, Schedule D, 11. Minimum Reporting Requirements, Table B13: Reporting Requirements and Due Dates for Table B1: Influent Monitoring (Row 4), Table B2: Effluent Monitoring (Row 6), Table B3: Ambient Monitoring (Row 2) on Pages 9-11 of 32.
1. pH sensor for Influent Monitoring (Row 4) located at the WWTP in the Headworks channel
2. Temp Sensor for Ambient Monitoring (Row 2) at the WTP Intake Pump Station adjacent to Molalla River
3. pH sensor for Effluent Monitoring (Row 6) located at the DMS adjacent to Molalla River
Please concur the above locations and systems to be installed are acceptable by DEQ to satisfy the requirements outlined in the NPDES Permit #101514.
Please let me know if you have any questions.
Sincerely,
Jennifer Cline, P.E.
City of Molalla
Public Works Director
O: 503.759.0218
F: 503.829.3676
