HomeMy WebLinkAboutRE_ EXTERNAL_ BMPs_Erosion Control Canyon Loop trail Improvement Project (2)CAUTION: This message originated outside of our City of Diamond Bar network.
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Thank you, Anthony. Would you agree then from your email below that Danny did not implement BMPs previously, if there was significant erosion following previous rain events? I can respond
to FWS that the contractor did not install BMPs previously but will install them prior to the next rain event later this week, I just want to make sure that what I say is accurate and
that you’re in agreement since I’m putting it in writing. I assume the BMPs will include silt fencing, wattles, and other methods to contain soil and/or prevent large rills or erosional
features from developing. Looking at the photos that have been sent to the City and to the agencies, I think the concerns that they’re voicing are that sediment has just been sidecast
into areas that are otherwise supposed to be untouched. I don’t know how to resolve that short of pulling it all back very carefully at the end of the project, but they can at least
attempt to prevent it from going in deeper into the vegetation from rainfall, particularly the larger mounds that have been built up.
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: Anthony Jordan <AJordan@DiamondBarCA.Gov>
Sent: Monday, November 28, 2022 4:19 PM
To: Danny Daher <acecd99@gmail.com>
Cc: Ryan Wright <RWright@DiamondBarCA.Gov>; Richard Fisher <rfisher@rfaland.com>; Ashimine, Alan <aashimine@mbakerintl.com>; Winkleman, Ryan <Ryan.Winkleman@mbakerintl.com>; Ryan McLean
<RMcLean@DiamondBarCA.Gov>
Subject: EXTERNAL: BMPs/Erosion Control Canyon Loop trail Improvement Project
Good afternoon Danny,
Per the approved plans, specifications and special provisions of the subject project, eroded sediments shall be retained on site. During the most recent rain event on the trail, several
areas experienced significant erosion. As such, please install erosion control measures as required to prevent any further erosion prior to the next rain event. Please reach out to
me with any questions or concerns. If you would prefer, I am happy to meet with you on site to discuss.
Regards,
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Anthony Jordan Maintenance Superintendent
City of Diamond Bar | Public Works Department
21810 Copley Drive, Diamond Bar, CA 91765
t 909.839.7063 | 909.839.7000 main | f 909.861.3117
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