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HomeMy WebLinkAboutEA 2025-0046; KELLY DRIVE CHANNEL EMERGENCY REPAIR - CIP 6606; Project CorrespondenceMemorandum April 10, 2025 To: From: David Edwards, Senior Engineer Scott Donnell, Senior Planner {'city of Carlsbad Via Re: Eric Lardy, City Planner ~~ EA 2025-0046 Kelly Drive Channel Emergency Repair (CIP No. 6606) Thank you for submitting an Early Assessment for the Kelly Drive Channel Emergency Repair. The submission includes a project proposal for repair of the existing concrete-lined stormwater channel to prevent further damage and protect adjacent private property and natural areas from an embankment slip failure. The existing wall of the western channel embankment has eroded to the point of concrete failure wherein a void measuring approximately 117 cubic yards has opened behind the foundation wall. Without repair, the void could expand with future rain events, potentially encroaching upon the adjacent residential properties and natural areas. The Kelly Drive Channel has undergone multiple, similar repairs in the last decade. The proposed work will include the installation of stormwater best management practices, de-watering the site, installation of concrete forms, and placement of cement slurry at the repair site. Work to repair the concrete channel will commence following the installation of stormwater best management practices and the de-watering of the channel. De-watering will include using a pump to discharge ponded water from the open void, downstream onto the fully lined portion of the concrete channel. Crews will then install forms to match the elevation and shape of the as-built structure wherein 4000 PSI shotcrete will be pumped into the void. The project is not expected to require the excavation or removal of sensitive vegetation. The project will service the channel wall adjacent to the property located at 4866 Kelly Drive, APN 207- 230-27-00. The channel is on private property, but easements grant the city the right to access and maintain the channel for drainage. The channel and project site are also immediately adjacent to private residentia I properties. Authorization to access the project site via the adjacent private residence is currently in progress. Previous repairs to the channel have been granted right of entry by the adjacent residents. Staging and project access will be located along and within the fully lined concrete portion of the channel, providing sufficient space for staging and site ingress and egress. Cement slurry will be delivered to the repair site via a 4-inch concrete pump hose . The hose will be routed either through the yard of 4866 Park Drive or up the fully lined concrete channel. The proposed area of work and the channel are zoned R-1 (One Family Residential) and R-A-10000 (Residential Agricultural, minimum 10,000 square foot lot size) and have a General Plan land use designation of R-4 (Residential 0-4 du/ac). The property is also located within the Coastal Zone (Mello II segment), which applies the same land use and zoning designations. Community Development Planning Division 1635 Faraday Avenue "i Carlsbad, CA 92008 '( 442-339-2600 EA 2025-0046 -Kelly Drive Channel Emergency Repair April 10, 2025 Page 2 In response to your application, the Planning Division has prepared this comment letter. Please note that the purpose of an Early Assessment is to provide you with direction and comments on the overall concept of your project. This Early Assessment does not represent an in-depth analysis of your project. It is intended to give you feedback on critical issues based upon the information provided in your submittal. This review is based upon the plans, policies, and standards in effect as of the date of this review. Please be aware that at the time of a formal application submittal, new plans, policies, and standards may be in effect and additional issues of concern may be raised through a more specific and detailed review. Planning 1. The project is located within the Coastal Zone. If the project can be determined exempt from the California Environmental Quality Act (CEQA), the project will not be subject to the requirement to file for a Coastal Development Permit (CDP). However, if the project has significant environmental impacts, such as to wetlands, the project would be subject to a CDP as well as environmental review. California Public Resources Code Section 30610(d) states: "Repair or maintenance activities that do not result in an addition to, or enlargement or expansion of, the object of those repair or maintenance activities; provided, however, that if the commission determines that certain extraordinary methods of repair and maintenance involve a risk of substantial adverse environmental impact, it shall, by regulation, require that a permit be obtained pursuant to this chapter." As part of the project, please ensure the proper analysis, such as a one identifying potential impacts to wetlands, is performed to determine the significance of any environmental impacts and thus project permitting requirements. If a CDP is required, it will be issued by the city, subject to appeal by the Coastal Commission. 2. This project will require authorization by the U.S. Army Corps of Engineers, Regional Water Quality Control Board, and the California Department of Fish and Wildlife. These agencies must provide the appropriate authorizations prior to the commencement of work on the property. 3. To access and complete work on private property, the city must obtain the appropriate Right of Access documentation from all property owners whose properties will be accessed during the repairs. These authorizations must be obtained prior to the commencement of work on the property. Habitat Management 4. Because this is an emergency project and resources that potentially could be impacted include jurisdictional wetlands, any Habitat Management Plan requirements would be satisfied through the requirements of the wetland permitting agencies. 5. In addition to the pre-project vegetation mapping already completed, please ensure the project biologist also maps and documents the post-work condition to calculate the acres of impact. If mitigation is required, depending on the amount, a potential source of credits is the North County EA 2025-0046 -Kelly Drive Channel Emergency Repair April 10, 2025 Page 3 Habitat Bank. You may contact Senior Program Manager Rosanne Humphrey for further information. Land Development Engineering 6. No comments. All necessary application forms and submittal requirements are available at the Planning counter located in the Faraday Building at 1635 Faraday Avenue or online at http://www.carlsbadca.gov. You may also access the General Plan Land Use Element and the Zoning Ordinance on line at the website address shown; select Department Listing; select Planning Home Page. Please review all information carefully before submitting. If you would like to schedule a meeting to discuss this letter with the commenting departments, please contact Scott Donnell at (442) 339-2618. RE :SD:mh c: Eric Lardy, City Planner Hossein Ajideh, Engineering Manager Rosanne Humphrey, Senior Program Manager Robert Efird, Principal Pia nner Scott Donnell, Senior Planner Laserfiche/File Copy Data Entry