From: Gerald Fisher

Sent: Mon Oct 23 17:34:45 2017

To: Scott Franklin

Cc: Brenda Reiner (Molalla)

Subject: RE: Molalla TFG Retail - Storm and Street Questions

Importance: Normal

Hi Scott,

Minimum aggregate base thickness shall be a minimum eight (8) inches for Local streets and twelve (12) inches for Collector and Arterial streets. I will update our standards to reflect the changes in the last standards. Looks like this section was left out of the base rock section. These are minimums and the geotech report will need to identify whether the base rock section will suffice or if it needs to be a few inches thicker due to subgrade conditions. An alternative to thickening base rock is to use cement treated base in areas where there are poor subgrade conditions.

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: Scott Franklin [mailto:sfranklin@pacland.com]

Sent: Monday, October 23, 2017 1:47 PM

To: Gerald Fisher <gfisher@cityofmolalla.com>

Subject: RE: Molalla TFG Retail - Storm and Street Questions

I had to leave for a meeting right as I was typing my last email, so I didn’t get to the aggregate base portion of my email. I did see the minimum asphalt requirements in the city’s design standards, but haven’t yet found any minimums for aggregate thickness. Does the city have minimums for aggregate thickness for public roads?

Thanks,

Scott Franklin, P.E., P.L.S.**

**P.E. (OR, CO); P.L.S. (OR)

PACLAND

Engineering & Development Consulting Services

10135 S.E. Sunnyside Road, Suite 200 | Clackamas, OR 97015

Office: (503) 659-9500 x1311 | Fax: (503) 659-2227

*Confidentiality Disclaimer*

This communication is the property of PACLAND and may contain confidential or privileged information. Unauthorized use of this communication is strictly prohibited and may be unlawful. If you have received this communication in error, please immediately notify the sender by reply e-mail and destroy all copies of the communication and any attachments.

From: Scott Franklin

Sent: Monday, October 23, 2017 9:49 AM

To: 'Gerald Fisher' <gfisher@cityofmolalla.com>

Subject: RE: Molalla TFG Retail - Storm and Street Questions

Got it – thanks. We modeled the storm system that way…just wanted to make sure I wasn’t missing something, since it wasn’t in the main body of the design standards.

Thanks,

Scott Franklin, P.E., P.L.S.**

**P.E. (OR, CO); P.L.S. (OR)

PACLAND

Engineering & Development Consulting Services

10135 S.E. Sunnyside Road, Suite 200 | Clackamas, OR 97015

Office: (503) 659-9500 x1311 | Fax: (503) 659-2227

*Confidentiality Disclaimer*

This communication is the property of PACLAND and may contain confidential or privileged information. Unauthorized use of this communication is strictly prohibited and may be unlawful. If you have received this communication in error, please immediately notify the sender by reply e-mail and destroy all copies of the communication and any attachments.

From: Gerald Fisher [mailto:gfisher@cityofmolalla.com]

Sent: Monday, October 23, 2017 9:43 AM

To: Scott Franklin <sfranklin@pacland.com>

Subject: RE: Molalla TFG Retail - Storm and Street Questions

3.2.2 a. Peak runoff rates shall not exceed predevelopment rates for the specific range of storms

Definitions:

PREDEVELOPED – Considered as the natural, unimproved and unaltered state of the land.

Pavement sections are in section 2 under 2.2.5 and 2.2.6.

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: Scott Franklin [mailto:sfranklin@pacland.com]

Sent: Thursday, October 19, 2017 4:51 PM

To: Gerald Fisher <gfisher@cityofmolalla.com>

Subject: RE: Molalla TFG Retail - Storm and Street Questions

I meant you’re out through 10/20, not until

Thanks,

Scott Franklin, P.E., P.L.S.**

**P.E. (OR, CO); P.L.S. (OR)

PACLAND

Engineering & Development Consulting Services

10135 S.E. Sunnyside Road, Suite 200 | Clackamas, OR 97015

Office: (503) 659-9500 x1311 | Fax: (503) 659-2227

*Confidentiality Disclaimer*

This communication is the property of PACLAND and may contain confidential or privileged information. Unauthorized use of this communication is strictly prohibited and may be unlawful. If you have received this communication in error, please immediately notify the sender by reply e-mail and destroy all copies of the communication and any attachments.

From: Scott Franklin

Sent: Thursday, October 19, 2017 4:50 PM

To: Gerald Fisher <gfisher@cityofmolalla.com>

Subject: Molalla TFG Retail - Storm and Street Questions

Gerald –

I know you’re out of the office until 10/20, and might not be able to respond until your return, but I’m trying to locate a couple of things in the new Construction Standards, and am not having much success – hopefully, you can point me in the right direction:

• * In my pre-app notes from last June, I wrote down that we are to assume a pre-historic condition for our pre-development hydrologic condition for our site (i.e. – use “prairie” condition). However, I’m not finding that in the new Construction and Design Standards. I’m just seeing reference to extg conditions for pre-development, and not prehistoric condition. Can you point me in the right direction for this requirement? The answer obviously has a big impact on the detention storage for the site, as it’s currently mostly gravel, and we’re trying to get an idea of what the storm detention costs would be.
• * Street structural section – I see that the street design standards list a minimum pavement section for the roads (noting that the structural section design must be based on a geotechnical investigation), but I don’t see a minimum aggregate section in the standards? Is there a minimum aggregate section, or am I just not seeing it? We talked a little about the structural section last week, but I was thinking I would find a minimum section in the new standards, and am not finding it.

Thanks for your help!

Thanks,

Scott Franklin, P.E., P.L.S.**

**P.E. (OR, CO); P.L.S. (OR)

PACLAND

Engineering & Development Consulting Services

10135 S.E. Sunnyside Road, Suite 200 | Clackamas, OR 97015

Office: (503) 659-9500 x1311 | Fax: (503) 659-2227

*Confidentiality Disclaimer*

This communication is the property of PACLAND and may contain confidential or privileged information. Unauthorized use of this communication is strictly prohibited and may be unlawful. If you have received this communication in error, please immediately notify the sender by reply e-mail and destroy all copies of the communication and any attachments.