Water

This page was last updated on October 17, 2025

View current versions of key documents

Landfill’s Storm Water Pollution Prevention Plan
Landfill’s Waste Discharge Requirements

Los Angeles Regional Water Quality Control Board

Groundwater monitoring well sampling reports:

Quarterly groundwater monitoring reports:

October 15, 2025 Third Quarter Groundwater Monitoring Report to the Water Board
July 31, 2025 Semi-Annual Report to the Water Board (en Español)
- Appendices
July 15, 2025 Second Quarter Groundwater Monitoring Report to the Water Board (en Español)
April 15, 2025 First Quarter Groundwater Monitoring Report to the Water Board (en Español)
January 15, 2025 Fourth Quarter Groundwater Monitoring Report to the Water Board (en Español)
October 15, 2024 Third Quarter Groundwater Monitoring Report to the Water Board (en Español)
July 15, 2024 letter to the Water Board (en Español) enclosing the first quarterly groundwater monitoring and liner integrity reports pursuant to paragraphs 1(d) and (f) of the March 20, 2024 Investigative Order and an initial response to the Water Board’s June 27, 2024 Notice of Violation. The attachments to this letter are below:

Quarterly liner integrity reports:

October 15, 2025 Third Quarter Liner Integrity Report to the Water Board
July 15, 2025 Second Quarter Liner Integrity Report to the Water Board (en Español)
April 15, 2025 First Quarter Liner Integrity Report to the Water Board (en Español)
January 15, 2025 Liner Integrity Memorandum for the Fourth Quarter Liner Integrity Report to the Water Board (en Español)
October 15, 2024 Liner Integrity Memorandum for the Third Quarter Liner Integrity Report to the Water Board (en Español)
July 19, 2024 Liner Integrity Memorandum for the First Quarter Liner Integrity Report to the Water Board (en Español)
July 15, 2024 letter to the Water Board (en Español) enclosing the first quarterly groundwater monitoring and liner integrity reports pursuant to paragraphs 1(d) and (f) of the March 20, 2024 Investigative Order and an initial response to the Water Board’s June 27, 2024 Notice of Violation. The attachments to this letter are below:

Leachate seep/spill reports:

September 17, 2025 report to the Water Board on a September 10, 2025 leachate leak (en Español)
September 9, 2025 report to the Water Board on a September 2, 2025 leachate leak (en Español)
September 2, 2025 report to the Water Board on an August 26, 2025 leachate leak (en Español)
August 20, 2025 report to the Water Board on an August 13, 2025 leachate spill (en Español)
August 11, 2025 report to the Water Board on an August 4, 2025 leachate spill (en Español)
June 18, 2025 report to the Water Board on a June 12, 2025 leachate spill (en Español)
June 18, 2025 report to the Water Board on a June 11, 2025 leachate spill (en Español)
May 28, 2025 report to the Water Board on a May 21, 2025 leachate spill (en Español)
May 23, 2025 report to the Water Board on a May 17, 2025 leachate spill (en Español)
May 21, 2025 report to the Water Board on the May 14, 2025 leachate spill (en Español)
April 2, 2025 report to the Water Board on the March 26, 2025 leachate spill (en Español)
March 13, 2025 report to the Water Board on a March 7, 2025 leachate spill (en Español)
February 14, 2025 report #2 to the Water Board on a February 9, 2025 leachate seep (en Español)
February 14, 2025 report #1 to the Water Board on a February 9, 2025 leachate seep (en Español)
February 14, 2025 report to the Water Board on a February 7, 2025 leachate seep (en Español)
December 30, 2024 report to the Water Board on the December 24, 2024 leachate seep (en Español)
December 27, 2024 report to the Water Board on the December 22, 2024 leachate seep (en Español)
December 17, 2024 report to the Water Board on the December 10, 2024 leachate spill (en Español)
December 3, 2024 report to the Water Board on the November 26, 2024 leachate spill (en Español)
October 30, 2024 report to the Water Board on the October 23, 2024 leachate spill (en Español)
October 29, 2024 report to the Water Board on the October 21, 2024 leachate seep (en Español) and correction (en Español)
October 24, 2024 report to the Water Board on the October 17, 2024 leachate seep (en Español)
October 24, 2024 report to the Water Board on the October 17, 2024 leachate spill (en Español)
October 8, 2024 report to the Water Board on the October 1, 2024 leachate seep (en Español)
October 3, 2024 report to the Water Board on the September 28, 2024 leachate seep (en Español)
October 3, 2024 report to the Water Board on the September 27, 2024 leachate seep (en Español)
October 3, 2024 report to the Water Board on the September 26, 2024 leachate seep (en Español)
September 13, 2024 report to the Water Board on the September 9 leachate seep (en Español)
September 13, 2024 report to the Water Board on the September 8 leachate spill (en Español)
September 13, 2024 report to the Water Board on the September 8 leachate seep (en Español)
August 27, 2024 leachate seep report submitted to the Water Board pursuant to MRP No. CI-6231 Section B.3.a. (en Español)
July 18, 2024 report to the Water Board on the July 12, 2024 leachate seep (en Español)
July 12, 2024 report to the Water Board on the July 6, 2024 leachate seep (en Español)
July 12, 2024 report to the Water Board on the July 5, 2024 leachate seep (en Español)
June 26, 2024 report to the Water Board on the June 19, 2024 leachate seep (en Español)
June 17, 2024 report to the Water Board on the June 10, 2024 leachate seep (en Español)
May 21, 2024 report to the Water Board on the May 14, 2024 leachate seep
May 17, 2024 report to the Water Board on the May 13, 2024 leachate seep
May 14, 2024 report to the Water Board on the May 7, 2024 leachate seep (en Español)
May 9, 2024 report to the Water Board on the May 2, 2024 leachate seep (en Español)
May 8, 2024 report to the Water Board on the May 1, 2024 leachate seep (en Español)
April 30, 2024 report to the Water Board on the April 23, 2024 leachate seep (en Español)
March 15, 2024 report to the Water Board on the March 8, 2024 leachate seep (en Español)
March 7, 2024 report to the Water Board on the March 4, 2024 leachate seep
March 7, 2024 report to the Water Board on the March 3, 2024 leachate seep
March 7, 2024 report to the Water Board on the March 1, 2024 leachate seep
March 7, 2024 report to the Water Board on the February 29, 2024 leachate seep in Grid 145
March 7, 2024 report to the Water Board on the February 29, 2024 leachate seep in Grid 207
February 28, 2024 report to the Water Board on the February 21, 2024 leachate seep (en Español)
February 27, 2024 report to the Water Board on the February 20, 2024 leachate seep (en Español)
February 26, 2024 report to the Water Board on the February 19, 2024 leachate seep (en Español)
February 14, 2024 report to the Water Board on the February 7, 2024 leachate seep (en Español)
February 12, 2024 report to the Water Board on the February 5, 2024 leachate seep (en Español)
February 8, 2024 report to the Water Board on the February 3, 2024 leachate seep (en Español)
January 26, 2024 report to the Water Board on the January 21, 2024 leachate seep (en Español)
January 22, 2024 report to the Water Board on the January 15, 2024 leachate seep (en Español)
January 15, 2024 report to the Water Board on the January 8, 2024 leachate seep (en Español)
December 29, 2023 report to the Water Board on the December 22, 2023 leachate seep (en Español)

30-day storm event reports:

May 22, 2025 30-Day Storm Water Report to the Water Board in response to the March 20, 2024 Investigative Order (en Español)
April 11, 2025 30-Day Storm Water Report to the Water Board in response to the March 20, 2024 Investigative Order (en Español)
April 3, 2025 30-Day Storm Water Report to the Water Board in response to the March 20, 2024 Investigative Order (en Español)
March 28, 2025 30-Day Storm Water Report to the Water Board in response to the March 20, 2024 Investigative Order (en Español)
March 14, 2025 30-Day Storm Water Report to the Water Board in response to the March 20, 2024 Investigative Order (en Español)
March 6, 2025 30-Day Storm Water Report to the Water Board in response to the March 20, 2024 Investigate Order (en Español)
February 24, 2025 30-Day Storm Report to the Water Board in response to the March 20, 2024 Investigate Order (en Español)
May 13, 2024 30-Day Storm Report to the Water Board in response to the March 20, 2024 Investigative Order (en Español)
April 29, 2024 30-Day Storm Report to the Water Board in response to the March 20, 2024 Investigative Order (en Español)

Other Water Board submittals:

December 11, 2024 response to the Water Board regarding Chiquita’s request for reconsideration of the Water Board’s September 25, 2024 denial of authorization to place waste in Cell 8B (en Español)
September 10, 2024 Letter to the Water Board regarding sampling and installation of wells DW-30, DW-31, and FP-01 (en Español)
August 23, 2024 revised Master Development Plan Stability Analyses for Cell 8B (en Español)
August 21, 2024 Letter to the Water Board re the revised workplan, extension request and updates for sampling of wells DW-30, DW-31, and FP-01 (en Español)
July 26, 2024 response to the Water Board’s June 27, 2024 Notice of Violation (en Español)
- Attachments to Chiquita’s July 26, 2024 response
June 28, 2024 letter to the Water Board regarding the Water Board’s June 6, 2024 denial of the final construction report for Cell 8B (en Español)
May 16, 2024 response to the Water Board’s April 9 NOV (en Español)
April 29, 2024 response to the Water board’s March 28 NOV (en Español)
April 22, 2024 response to the Water Board’s March 20, 2024 Investigative Order (en Español)
February 20, 2024 report to the Water Board responding to the November 22, 2023 NOV (en Español)
December 22, 2023 response (en Español) to the Los Angeles Regional Water Quality Control Board notice of violation issued on November 22, 2023