From: Gerald Fisher
Sent: Fri Mar 16 13:36:16 2018
To: Brenda Reiner
Subject: RE: 600 Rivers Lane
Importance: Normal
K. Let’s chat in a bit.
Regards,
Gerald Fisher, P.E. | Public Works Director
City of Molalla
117 N Molalla Ave. | PO Box 248 |Molalla, OR 97038
Office: 503.829.6855 | Direct: 503.759.0218
CONFIDENTIALITY NOTICE: The information contained in this email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient and have received this communication in error, please contact the sender by reply email and destroy all copies of the original message. Thank you.
From: Brenda Reiner [mailto:breiner@cityofmolalla.com]
Sent: Friday, March 16, 2018 11:53 AM
To: Gerald Fisher <gfisher@cityofmolalla.com>
Subject: RE: 600 Rivers Lane
Gerald,
There is a misunderstanding here about what the County does with reviewing stormwater and I would like to talk to you about this.
Thanks,
Brenda Reiner | Senior Engineering Technician
City of Molalla
117 N Molalla Ave. | PO Box 248 |Molalla, OR 97038
Office: 503.759.0243 I Fax: 503.829.3676
From: Gerald Fisher [mailto:gfisher@cityofmolalla.com]
Sent: Friday, March 16, 2018 11:49 AM
To: Brenda Reiner <breiner@cityofmolalla.com>
Subject: RE: 600 Rivers Lane
Hi Brenda,
We discussed this. These will be onsite private systems that will be submitted to and reviewed by the County Building Department. If they (County) and the engineer determine that they cannot do an onsite private system then the developer will have to connect to an upsize the public system to accommodate flows. If they can’t get through the onsite private step then we can talk to them about the requirements for the public step.
Regards,
Gerald Fisher, P.E. | Public Works Director
City of Molalla
117 N Molalla Ave. | PO Box 248 |Molalla, OR 97038
Office: 503.829.6855 | Direct: 503.759.0218
CONFIDENTIALITY NOTICE: The information contained in this email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient and have received this communication in error, please contact the sender by reply email and destroy all copies of the original message. Thank you.
From: Brenda Reiner [mailto:breiner@cityofmolalla.com]
Sent: Friday, March 16, 2018 8:05 AM
To: Gerald Fisher <gfisher@cityofmolalla.com>
Subject: FW: 600 Rivers Lane
I would like to discuss this storm issue with you for Peter Burkhoff.
Brenda Reiner | Senior Engineering Technician
City of Molalla
117 N Molalla Ave. | PO Box 248 |Molalla, OR 97038
Office: 503.759.0243 I Fax: 503.829.3676
From: george Snegirev [mailto:avalonengineering@wavecable.com]
Sent: Thursday, March 15, 2018 5:00 PM
Subject: 600 Rivers Lane
Brenda
I will be working on the storm water management plan for Peter Burkoff for his new residence at 600 Rivers Lane.
Do you mind answering a few questions on how this needs to be done.
To connect into the storm drainage system out in Toliver Rd seems to be not an option, so an on-site storm water facility is what will be required in this instance.
The NRCS Soil Survey shows this area to be Dayton silt loam which belongs in hydrologic soil group D, this soil group has a very slow infiltration rate.
Table 3.12 Infiltration Trench Requirements show Soils requirements (NRCS classification) of A or B for publicly maintained facilities; C soils may be used for privately owned facilities if drawdown standards are met.
Can we still have an infiltration trench in class D soils; and if possible can we use the minimum rate of 0.5 inches per hour for our design or is an infiltration test needed to be done to verify the infiltration rate.
Is this infiltration facility required for the roof runoff only or it needs to be designed for all the runoff on this site.
What storm event does this facility need to manage.
If you could provide me answers for these questions then this will first determine if the infiltration trench is feasible and then the criteria for design.
Thank you very much and I look forward to your response.
George Snegirev P.E.
103 S. First Street, Suite 205
Silverton, OR 97381
(Office) 503-874-4433
(Cell) 503-807-5048