JASON E. UHLEY 1995 MARKET STREET
General Manager-Chief Engineer RIVERSIDE, CA 92501
951.955.1200
951.788.9965 FAX
www.rcflood.org
246944
RIVERSIDE COUNTY FLOOD CONTROL
AND WATER CONSERVATION DISTRICT
November 4, 2022
City of Murrieta
Planning Department
One Town Square
Murrieta, CA 92562-7922
Attention: Tamara Harrison Re: DP 2022-2605, APN 910-410-011
The Riverside County Flood Control and Water Conservation District (District) does not usually review land divisions/land use cases or provide State Division of Real Estate letters/flood hazard reports for projects that are located within incorporated cities. Exceptions are made for cases with items of specific interest to the District including District Master Drainage Plan facilities, other regional flood control and drainage facilities which could be considered a logical component or extension of a master plan system, and District Area Drainage Plan fees (development mitigation fees).
The District's review is based on the above -referenced project transmittal, received October 18, 2022. The District has not reviewed the proposed project in detail, and the following comments do not in any way constitute or imply District approval or endorsement of the proposed project with respect to flood hazard, public health and safety, or any other such issue:
☐ This project would not be impacted by District Master Drainage Plan facilities , nor are other facilities of regional interest proposed.
☒ This project involves District proposed Master Drainage Plan facilities, namely, Murrieta Master Drainage Plan Line D . The District will accept ownership of such facilities on written request by the City. The Project Applicant shall enter into a cooperat ive agreement establishing the terms and conditions of inspection, operation, and maintenance with the District and any other maintenance partners. Facilities must be constructed to District standards, and District plan check and inspection will be required for District acceptance. Plan check, inspection, and administrative fees will be required.
All regulatory permits (and all documents pertaining thereto, e.g., Habitat Mitigation and Monitoring Plans, Conservation Plans/Easements) that are to be secure d by the Applicant for both facility construction and maintenance shall be submitted to the District for review. The regulatory permits' terms and conditions shall be approved by the District prior to improvement plan approval, map recordation, or finalization of the regulatory permits. There shall be no unreasonable constraint upon the District's ability to operate and maintain the flood control facility(ies) to protect public health and safety.
☒ If this project proposes channels, storm drains 36 inc hes or larger in diameter, or other facilities that could be considered regional in nature and/or a logical extension a District's facility, the District would consider accepting ownership of such facilities on written request by the City. The Project App licant shall enter into a cooperative agreement establishing the terms and conditions of inspection, operation, and maintenance with the District and any other maintenance partners. Facilities must be constructed to District standards, and District plan c heck and inspection will be required for District acceptance.
Plan check, inspection, and administrative fees will be required. The regulatory permits' terms and conditions shall be approved by the District prior to improvement plan approval, map recorda tion, or finalization of the regulatory permits. There shall be no unreasonable constraint upon the District's ability to operate and maintain the flood control facility(ies) to protect public health and safety.
City of Murrieta - 2 - November 4, 2022
Re: DP 2022-2605, APN 910-410-011 246944
☒ This project is located within the limits of the District's Murrieta Creek (☒Murrieta Valley ☐Temecula Valley ☐Santa Gertrudis Valley ☐Warm Springs Valley) Area Drainage Plan for which drainage fees have been adopted. If the project is proposing to create additional impervious surface area, applicable fees should be paid (in accordance with the Rules and Regulations for Administration of Area Drainage Plans) to the Flood Control District or City prior to issuance of grading or building permits. Fees to be paid should be at the rate in effect at the time of issuance of the actual permit.
☐ An encroachment permit shall be obtained for any construction related activities occurring within District right of way or facilities, namely, ____________________. If a proposed storm drain connection exceeds the hydraulic performance of the existing drainage facilities, mitigation will be required. For further information, contact the District's Encroachment Permit Section at 951.955.1266.
☐ The District's previous comments are still valid.
GENERAL INFORMATION
This project may need to obtain an applicable National Pollutant Discharge Elimination System (NPDES) permit coverage from the State Water Resources Control Board or the California Regional Water Quality Control Board. Clearance for grading, recordation , or other final approval should not be given until the City has determined that the project has been granted a permit or is shown to be exempt.
If this project involves a Federal Emergency Management Agency (FEMA) mapped floodplain, then the City should require the applicant to provide all studies, calculations, plans , and other information required to meet FEMA requirements, and should further require that the applicant obtain a Conditional Letter of Map Revision (CLOMR) prior to grading, recordation , or other final approval of the project and a Letter of Map Revision (LOMR) prior to occupancy.
The project proponent shall bear the responsibility for complying with all applicable mitigation measures defined in the California Environmental Quality Act (CEQA) document (i.e., Negative Declaration, Mitigated Negative Declaration, Environmental Impact Report) and/or Mitigation Monitoring and Reporting Program, if a CEQA document was prepared for the project. The project propone nt shall also bear the responsibility for complying with all other federal, state, and local environmental rules and regulations that may apply.
If a natural watercourse or mapped floodplain is impacted by this project, the City should require the applica nt to obtain a Section 1602 Agreement from the California Department of Fish and Wildlife and a Clean Water Act Section 404 Permit from the U.S. Army Corps of Engineers, or written correspondence from these agencies indicating the project is exempt from th ese requirements. A Clean Water Act Section 401 Water Quality Certification may be required from the local California Regional Water Quality Control Board prior to issuance of the Corps 404 permit.
Very truly yours,
AMY MCNEILL
Engineering Project Manager
ec: Riverside County Planning Department
Attn: Timothy Wheeler
WMC:jss