HomeMy WebLinkAboutRE_ EXTERNAL_ Water Diverter LocationOk, thank you. I am confident we can re-locate the diverter in this general area.
Thanks,
Ryan
From: Phaneuf, Ryan <Ryan.Phaneuf@mbakerintl.com>
Sent: Tuesday, January 17, 2023 12:07 PM
To: Ryan Wright <RWright@DiamondBarCA.Gov>; Winkleman, Ryan <Ryan.Winkleman@mbakerintl.com>
Cc: Richard Fisher <rfisher@rfaland.com>
Subject: RE: EXTERNAL: Water Diverter Location
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Ryan and Ryan,
My concern would be erosion and sedimentation into the prickly pear scrub area. If it’s enough water to erode the trail, then it could erode the habitat areas and we definitely want
to avoid additional mitigation at all costs.
Ryan Phaneuf, CAE, CERP, sUAS | Restoration Biologist – Ecosystem Restoration
Michael Baker International | We Make a Difference
Santa Barbara, CA
[O] 949-330-4184 | [M] 949-616-0260
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From: Ryan Wright <RWright@DiamondBarCA.Gov <mailto:RWright@DiamondBarCA.Gov> >
Sent: Tuesday, January 17, 2023 11:33 AM
To: Winkleman, Ryan <Ryan.Winkleman@mbakerintl.com <mailto:Ryan.Winkleman@mbakerintl.com> >
Cc: Richard Fisher <rfisher@rfaland.com <mailto:rfisher@rfaland.com> >; Phaneuf, Ryan <Ryan.Phaneuf@mbakerintl.com <mailto:Ryan.Phaneuf@mbakerintl.com> >
Subject: RE: EXTERNAL: Water Diverter Location
Thank you. Correct, the diverter is basically a pre-fab concrete V-ditch filled with stone and flanked by a piece of timber on each side. There would not be a velocity reducer as those
are only designed for the rather long swales. Attached is an on-site example, although longer than we expect at the area in question.
From: Winkleman, Ryan <Ryan.Winkleman@mbakerintl.com <mailto:Ryan.Winkleman@mbakerintl.com> >
Sent: Tuesday, January 17, 2023 11:26 AM
To: Ryan Wright <RWright@DiamondBarCA.Gov <mailto:RWright@DiamondBarCA.Gov> >
Cc: Richard Fisher <rfisher@rfaland.com <mailto:rfisher@rfaland.com> >; Phaneuf, Ryan <Ryan.Phaneuf@mbakerintl.com <mailto:Ryan.Phaneuf@mbakerintl.com> >
Subject: RE: EXTERNAL: Water Diverter Location
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Ryan,
I’m going to copy the other Ryan on this as I think he would be better suited to comment on that, but just to clarify this would just be a mini ditch to carry water off the side of the
trail, correct? Where present, are these intended to stay earthen or will they be concrete, and is there any sort of velocity reducer where they are or is that only intended for the
longer v-ditch areas?
Ryan Winkleman | Project Manager/Senior Biologist/Certified Senior Ecologist
5 Hutton Centre Drive, Suite 500 | Santa Ana, CA 92707 | [O] 949-330-4115 | [M] (949) 533-0918
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From: Ryan Wright <RWright@DiamondBarCA.Gov <mailto:RWright@DiamondBarCA.Gov> >
Sent: Tuesday, January 17, 2023 11:23 AM
To: Winkleman, Ryan <Ryan.Winkleman@mbakerintl.com <mailto:Ryan.Winkleman@mbakerintl.com> >
Cc: Richard Fisher <rfisher@rfaland.com <mailto:rfisher@rfaland.com> >
Subject: EXTERNAL: Water Diverter Location
Hi Ryan,
While walking the trail and marking the locations for several water diverters on the Canyon Loop Trail today, we found an area of the trail that had some erosion after the recent rain.
The team that was on-site felt a water diverter would be best suited in the attached location. The 6ft diverter would basically run across the trail and flow toward the orange flag
in the photo. Our question for you is……do you foresee an issue with water being diverted towards an area heavily populated by the prickly pear cactus? We tend to believe this area
is well vegetated and the water would dissipate over a wide area naturally, but curious for your opinion.
Thank You,
Ryan
ynthia Robin Smith <diamondbarbeautiful@gmail.com <mailto:diamondbarbeautiful@gmail.com> >, Dan Silver <dsilverla@me.com <mailto:dsilverla@me.com> >, Greg Gubman <GGubman@DiamondBarCA.Gov
<mailto:GGubman@DiamondBarCA.Gov> >
Subject: RE: Incidental Take Permit for Canyon Loop Trail Improvements Project
Good Morning Mr. Hamilton,
The City of Diamond Bar consulted with Carol Roberts, ESA Sections 7 and 10 Division Supervisor with the USFWS, in July and August 2022 regarding the project's impacts on California
Gnatcatchers. It was her determination that with the project's timing outside of the breeding season, avoidance measures, and planned on-site coastal sage scrub habitat restoration,
the project would not result in significant impacts to the species and would not require an incidental take permit.
Take Care,
Ryan
-----Original Message-----
From: Robert Hamilton <robb@hamiltonbiological.com <mailto:robb@hamiltonbiological.com> >
Sent: Monday, November 21, 2022 7:53 AM
To: Ryan Wright <RWright@DiamondBarCA.Gov <mailto:RWright@DiamondBarCA.Gov> >
Cc: Lee Paulson <lee@silverlightpress.com <mailto:lee@silverlightpress.com> >; Cynthia Robin Smith <diamondbarbeautiful@gmail.com <mailto:diamondbarbeautiful@gmail.com> >; Dan Silver
<dsilverla@me.com <mailto:dsilverla@me.com> >
Subject: Incidental Take Permit for Canyon Loop Trail Improvements Project
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Hi Mr. White,
Could you please send me a PDF of the Incidental Take Permit that allows for impacts to the California Gnatcatcher from the Canyon Loop Trail Improvements Project?
Thank you,
Robb Hamilton
President, Hamilton Biological, Inc.
562-477-2181
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