RP-1 Disinfection Improvements Project

2 Documents in Project


SCH Number
Public Agency
State Water Resources Control Board
Document Title
RP-1 Disinfection Improvements Project
Document Type
NOE - Notice of Exemption
Document Description
The State Water Resources Control Board (State Water Board) is a Responsible Agency for the Project. The State Water Board’s Clean Water State Revolving Fund (SRF) Program is financing the Project referred to internally as RP-1 Disinfection Improvements Project. The Project involves repairs and improvements to the disinfection systems and related support facilities at Regional Plant (RP) No. 1. The Project consists of: (1) the demolition of the existing sodium hypochlorite storage and metering facility, (2) the construction of a new sodium hypochlorite storage and metering facility, (3) the construction of chemical dosing facilities, (4) improvements to the existing sodium bisulfite storage and metering facility, (5) structural and mechanical repairs to the existing sedimentation basin, (6) improvements to the Filter Effluent Structure No. 1 (New Effluent Structure) and No. 2 (Old Effluent Structure) to provide a pump mix chemical injection system, (7) improvements to provide an out-of-compliance diversion to Lagoon No. 3, (8) demolition of the west alum tank and associated discharge piping, odor scrubber and associated pumping system, abandoned chlorine piping, and bollards surrounding an electrical box, (9) asphalt improvements and a new parking lot, and (10) repair and reconstruction of existing improvements affected by the work, and incidentals for a complete and usable facility.

Contact Information

Kristen Way
Agency Name
State Water Board
Job Title
Environmental Scientist
Contact Types
Lead/Public Agency


San Bernardino
Southern California
Other Location Info
The Project is located within the Inland Empire Utilities Agency’s Regional Water Recycling Plant No. 1 at 2662 East Walnut Street, Ontario, San Bernardino County, California.

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Class 1; California Code of Regulations, title 14, division 6, chapter 3, article 19, sections 15301
Reasons for Exemption
The Project has been determined to meet the requirements of the exemption selected above and will not have a significant impact on water quality. The Project involves the operation, repair, maintenance, permitting, leasing, licensing, or minor alteration of existing public or private structures, facilities, and mechanical equipment involving negligible or no expansion of existing or former use. LEAD
County Clerk
San Bernardino


Notice of Exemption

Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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