From: Jennifer Cline
Sent: Tue Aug 25 17:58:34 2015
To: Daphne Marcyan
Cc: Chris Link; Dan Zinder
Subject: RE: Molalla Ave - Storm Sewer Sizing and Alignment
Importance: Normal
We also have recently updated water, sewer and storm GIS files. Please let me know if you would like a copy of those as well.
Jennifer Cline, P.E. | Public Works Director
Licensed in OR, WA
117 N Molalla Ave. | PO Box 248 * |Molalla, OR 97038
O: 503.759.0218 | F: 503.829.3676
From: Daphne Marcyan [mailto:Daphne.Marcyan@msa-ep.com]
Sent: Tuesday, August 25, 2015 3:04 PM
To: Jennifer Cline <jcline@cityofmolalla.com>
Cc: Chris Link <Chris.Link@msa-ep.com>
Subject: RE: Molalla Ave - Storm Sewer Sizing and Alignment
Jennifer,
Thanks for the response and for the master drainage plans for the City. I am currently working on the specs and cost estimate to go along with the 90% plans. I’ll send you the estimate as soon as it’s completed.
Thanks,
Daphne Marcyan, P.E. | Civil Engineer
Licensed in OR, WA
T: 503.225.9010 | Daphne.Marcyan@msa-ep.com
121 SW Salmon, Suite 900 | Portland, Oregon 97204-2919 | www.msa-ep.com
Murray, Smith & Associates, Inc. | Your Public Works Partner
Notice: This e-mail and any attached files are the private confidential property of the sender, and the materials are privileged communications intended solely for the receipt, use, benefit and information of the intended recipient indicated above. If you are not the intended recipient, you are hereby notified that any review, disclosure, copying, distribution, or taking of any other action in reliance on the contents of this transmission is strictly prohibited, and may result in legal liability on your part. If you have received this e-mail in error, please notify us immediately at the above address.
P Please consider the environment before printing this e-mail.
From: Jennifer Cline [mailto:jcline@cityofmolalla.com]
Sent: Tuesday, August 25, 2015 1:46 PM
To: Daphne Marcyan <Daphne.Marcyan@msa-ep.com>
Cc: Chris Link <Chris.Link@msa-ep.com>
Subject: RE: Molalla Ave - Storm Sewer Sizing and Alignment
Hi Daphne,
I apologize on the delayed response. Can you or Chris please provide me with an updated cost estimate for the current design?
My only concern with a design change from the curb tight alignment to the typical travel lane alignment is the increase in cost. I know Jim before he left was making some cost saving adjustments and the additional $25-$30K cost may be a wash from the last estimate I have.
Thank you,
Jennifer Cline, P.E. | Public Works Director
Licensed in OR, WA
117 N Molalla Ave. | PO Box 248 * |Molalla, OR 97038
O: 503.759.0218 | F: 503.829.3676
From: Daphne Marcyan [mailto:Daphne.Marcyan@msa-ep.com]
Sent: Friday, August 21, 2015 3:36 PM
To: Jennifer Cline <jcline@cityofmolalla.com>
Cc: Chris Link <Chris.Link@msa-ep.com>; Hash, Kenneth F. <HashK@hdjdg.com>; Sharar, Darlene K. <ShararD@hdjdg.com>; Randall Stark <Randal.Stark@msa-ep.com>
Subject: Molalla Ave - Storm Sewer Sizing and Alignment
Good Afternoon Jennifer,
During our meeting on Wednesday I said I would review the storm sewer sizing. I’ve reviewed this and it appears the storm sewer can be reduced from a 30” pipe to a 24” pipe between 3rd St. and Main St. This is based on storm sewer sizing for a 25-year storm event. The storm sewer sizing calculations were developed based on available information. The sizing was reviewed relative to the nearby drainage areas contributing to Molalla Ave. and does not include a complete analysis of the entire storm water system that serves the Molalla/Main and Molalla/Heintz intersections. Also, the existing storm sewer between 5th and 3rd is undersized, and since it is not being replaced with this project, the larger 30” storm sewer may be preferred between 3rd and Main St.
Another item I’d like to discuss is the current storm sewer alignment along Molalla Ave. The original alignment was chosen because the storm sewer runs between catch basins, therefore eliminating extra manholes needed at the catch basin locations. After reviewing the significant impacts to NW Natural and our meeting with them on Wednesday, I wanted to suggest the possibility of shifting the storm sewer alignment into the travel lane. Some of the pros and cons of shifting the storm sewer alignment are as follows:
Pros:
· Reduces significant impacts to NW Natural and potentially reduces scheduling conflicts regarding waiting for NW Natural to relocate their gas main along Molalla Ave.
· Additional manholes reduce maintenance required to keep storm sewer main line free from debris. The catch basins will collect storm water and debris, and prevent debris from entering manholes and main sewer line.
Cons:
· There will still be some impacts to NW Natural gas mains and gas service lines but the impacts are not as significant as installing the storm sewer under the curb line.
· There is an additional cost to install approximately 10 storm sewer manholes (approximate additional cost is $25K-$30K)
Please let me know what your thoughts are on this issue, and if you prefer to reduce the storm sewer size between 3rd and Main St. to 24” instead of 30”.
Let me know if you’d like to discuss these issues or have questions.
Have a nice weekend,
Daphne Marcyan, P.E. | Civil Engineer
Licensed in OR, WA
T: 503.225.9010 | Daphne.Marcyan@msa-ep.com
121 SW Salmon, Suite 900 | Portland, Oregon 97204-2919 | www.msa-ep.com
Murray, Smith & Associates, Inc. | Your Public Works Partner
Notice: This e-mail and any attached files are the private confidential property of the sender, and the materials are privileged communications intended solely for the receipt, use, benefit and information of the intended recipient indicated above. If you are not the intended recipient, you are hereby notified that any review, disclosure, copying, distribution, or taking of any other action in reliance on the contents of this transmission is strictly prohibited, and may result in legal liability on your part. If you have received this e-mail in error, please notify us immediately at the above address.
P Please consider the environment before printing this e-mail.