HomeMy WebLinkAboutFire Protection and Regulatory permitsFrom: Mayuko Nakajima
Sent: Monday, October 19, 2020 4:33 PM
To: 'J. Rob Meserve'; Ian Harvey; Bryan Avilla
Cc: Christian Malpica
Subject: Fire Protection and Regulatory permits
Follow Up Flag: Follow up
Flag Status: Flagged
Hi all,
A couple things noted by our consultant:
Fire Protection
One of the issues that needs to be resolved is the fire protection for the project. Have you
coordinated with the Fire Department to understand what structural and non-structural
requirements will be identified for the project? The non-structural will include the type of
vegetation that will be allowed within each residential lot as well as within the fuel modification
zones. The Fire Department is requesting review and approval of the Fuel Mod plans prior to
scheduling for Planning Commission. Because the project site is identified as a Very High Fire
Hazard Zone, it is important to get the Fire Department involved with the project early.
Regulatory Permits
The second issue is related to the two storm drains proposed to extend into Brea Canyon
Channel. The plans show both storm drains but do not explicitly call out the size of the storm
drains. ESA believes that the primary storm drain is proposed with a 36-inch diameter, but the
size of the storm drain extending from the southwestern portion of the project site is unknown.
It appears the extension of the storm drains into the channel will require a California Department
of Fish and Wildlife Streambed Alteration Agreement.
At this time, the need for a U.S. Army Corps of Engineers Section 404 permit and Regional
Water Quality Control Board Section 401 Certification is not known. To avoid the need for these
two regulatory approvals, the construction technique of working within the channel will need to
be identified. The construction activities to connect the storm drain into the channel will need to
occur with hand tools to prevent any material from being deposited within the channel. In
addition, temporary coffer dams within the channel would not be allowed during construction
activities.
The specific construction techniques would either be included as part of the project description
or as mitigation measures.
Mayuko Nakajima | Associate Planner
City of Diamond Bar | Planning Division
21810 Copley Drive, Diamond Bar, CA 91765
t (909) 839-7033| (909) 839-7000 main | f (909) 861-3117
mnakajima@diamondbarca.gov |www.DiamondBarCA.gov
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