Bonita Valley Reservoir Residual Control System
Summary
SCH Number
2025121082
Public Agency
Sweetwater Authority
Document Title
Bonita Valley Reservoir Residual Control System
Document Type
NOE - Notice of Exemption
Received
Posted
12/23/2025
Document Description
This project will install a Residual Control System (RCS) at Bonita Valley Reservoir (BVR), the Authority’s largest treated-water tank (two independent 9-MG basins), integrated with SCADA for 24/7 remote monitoring. The purpose of the project is to maintain a stable chloramine residual (right chlorine-to-ammonia ratio) to prevent nitrification that can occur with warm temps, low demand, and high chlorine demand. This protects system water quality and reliability and can avoid costly short-term switches to imported water—potentially paying for itself by averting a single water-quality event (i.e. nitrification). The project benefits customers system-wide by providing more consistent and stable chloramine residuals. The system is highly automated and will be integrated into the Authority’s Supervisory Control and Data Acquisition (SCADA) system allowing remote monitoring and alarming capabilities. It also benefits ratepayers by reducing costs through decreased reliance on imported water should the local water source (Sweetwater Reservoir) become challenging to treat.
Contact Information
Name
Israel Marquez
Agency Name
Sweetwater Authority
Job Title
Land and Environmental Manager
Contact Types
Lead/Public Agency / Project Applicant / Parties Undertaking Project
Phone
Email
Location
Coordinates
Cities
Bonita, Unincorporated
Counties
San Diego
Regions
Unincorporated
Cross Streets
Randy Ln, Bonita Rd, Moonview Dr, and Windrose Way
Zip
91902
Total Acres
Less than 1 acre
Parcel #
592-030-57-00, 592-030-60-00
State Highways
I-805, CA-54
Schools
Clear View Elementary School, Valley Vista Elementary School
Waterways
Sweetwater River
Other Location Info
This project is located within the existing BVR facility and previously disturbed site boundary.
Notice of Exemption
Exempt Status
Other
Type, Section or Code
Common Sense Exception (State CEQA Guidelines Section 15061(b)(3))
Reasons for Exemption
The work consists of installing and integrating a Residual Control System (RCS) entirely within the existing BVR facility and previously disturbed site boundary, with no expansion of use or capacity. Activities are limited to equipment installation (chemical feeders, mixer, monitoring/controls) and SCADA integration within existing structures and utility connections—typical minor alterations of existing public utility facilities. With no new ground disturbance outside the disturbed footprint, no increase in storage/treatment capacity, and no change in the reservoir’s operational purpose, there is no possibility of a significant effect on the environment.
County Clerk
San Diego
Attachments
Draft Environmental Document [Draft IS, NOI_NOA_Public notices, OPR Summary Form, Appx,]
Notice of Exemption
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