Borrego Water District - Rams Hill WWTF Groundwater Monitoring Wells

Summary

SCH Number
2023020616
Public Agency
Borrego Water District (BWD)
Document Title
Borrego Water District - Rams Hill WWTF Groundwater Monitoring Wells
Document Type
NOE - Notice of Exemption
Received
Posted
2/24/2023
Document Description
The Project would consist of drilling three pairs of clustered monitoring wells to expand the groundwater monitoring well network for the Rams Hills Wastewater Treatment Facility. The proposed project site totals 2.16 acres. The project occurs within Assessor’s Parcel Number (APN) 199-19-003, 200-12-041, and 200-12-042, within which the groundwater monitoring wells will be situated. The project site is located approximately 5 miles north of State Route 78, and 21 miles southwest of the Salton Sea. More specifically, the project site is located within the unincorporated community of Borrego Springs in San Diego County, north of Borrego Springs Road, east of Yaqui Pass Road, and south of Palm Canyon Drive. The WWTF is owned and operated by the District and is regulated by the California Regional Water Quality Control Board (RWQCB), Colorado River Basin Region, who issued the Tentative Waste Discharge Requirement Order R7-2019-0015 (Order) to the District on March 7, 2019. The Order outlines specific requirements for an updated Monitoring and Reporting Program (MRP) for the WWTF. The updated MRP is intended to include a groundwater monitoring network that adequately tracks groundwater quality trends and groundwater flow direction to characterize infiltration and identify if recharge to groundwater from the WWTF exceeds water quality objectives, impairs beneficial use, or contains constituents in excess of the California Code of Regulations Title 22 maximum containment levels. In a letter dated June 21, 2021, the RWQCB, Colorado River Basin Region granted approval of the Groundwater Monitoring Network Work Plan (Work Plan). The Work Plan was developed and prepared to partially satisfy Special Provision 1 of the Order for the Rams Hill WWTF. The purpose of this work plan is to provide guidelines for the drilling of six additional monitoring wells completed as clustered pairs (WWTP-2, WWTP-3, and WWTP-4) to expand the groundwater monitoring network for the WWTF. The permanent disturbance area for the six proposed groundwater monitoring wells is approximately 3 feet by 3 feet, and the temporary impact areas associated with equipment access is approximately 200 feet by 215 feet surrounding each proposed groundwater monitoring well cluster.

Contact Information

Name
Geoff Poole
Agency Name
Borrego Water District
Job Title
General Manager
Contact Types
Lead/Public Agency / Project Applicant / Parties Undertaking Project

Location

Counties
San Diego
Regions
Unincorporated
Cross Streets
Borrego Springs Road and Yaqui Pass Road
Zip
92004
Jobs
1
State Highways
Hwy 78
Airports
Borrego Valley Airport

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Class 3 (15303), Class 4 (15304), Class 6 (15306)
Reasons for Exemption
New Construction or Conversion of Small Structures, Minor Alterations of Land, Information Collection
County Clerk
San Diego

Attachments

Notice of Exemption

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