7r - NOA-Waterworks Industries Inc-Signed-State Water Resources Control Board Memo.pdf

State Water Resources Control Board

August 11, 2025

Rich Carnation, Chief Executive Officer Waterworks Industries Inc.

930 Shiloh Road, Building 38, Suite D Windsor, CA 95492

AMENDED NOTICE OF APPLICABILITY; WATERWORKS INDUSTRIES INC.;

STATEWIDE AQUATIC WEED CONTROL PERMIT

Dear Rich Carnation:

Thank you for submitting the May 28, 2025, Waterworks Industries Inc. amended application for regulatory coverage under the statewide Aquatic Weed Control Permit.1 The submitted information satisfies the application requirements. This amended Notice of Applicability for coverage under the Aquatic Weed Control Permit is identified by the waste discharge identification number 1 49AP00001 and is effective as of the date of this letter.

The Aquatic Weed Control Permit regulates the discharges of algaecides and aquatic herbicides currently registered for use in California. The regulated active ingredients include:

2,4-D, acrolein, calcium hypochlorite, copper, diquat, endothall, flumioxazin, fluridone, glyphosate, hydrogen peroxide, imazamox, imazapyr, penoxsulam, peroxyacetic acid, sodium carbonate peroxyhydrate, sodium hypochlorite, triclopyr, and adjuvants containing ingredients represented by the surrogate nonylphenol.

Users of products containing these ingredients are required to obtain coverage under the Aquatic Weed Control Permit prior to application to waters of the United States.

1 Statewide Permit for Residual Aquatic Pesticide Discharges to Waters of the United

States from Algae and Aquatic Weed Control Applications, Order 2013-0002-DWQ as amended. For more information, please visit the Aquatic Weed Control Permit webpage (https://www.waterboards.ca.gov/water_issues/programs/npdes/pesticides/weed_contro l.html).

https://www.waterboards.ca.gov/board_decisions/adopted_orders/water_quality/2013/wqo2013_0002dwq.pdf https://www.waterboards.ca.gov/board_decisions/adopted_orders/water_quality/2013/wqo2013_0002dwq.pdf https://www.waterboards.ca.gov/board_decisions/adopted_orders/water_quality/2013/wqo2013_0002dwq.pdf https://www.waterboards.ca.gov/water_issues/programs/npdes/pesticides/weed_control.html

Rich Carnation, Chief Executive Officer

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Discharge Description Waterworks Industries Inc. (Discharger) provides aquatic weed control services to clients within multiple Regional Water Quality Control Boards jurisdictions. Per its existing Notice of Applicability, the Discharger applies aquatic pesticides with the active ingredients of copper, diquat dibromide, endothall, flumioxazin, fluridone, glyphosate, hydrogen peroxide, imazamox, imazapyr, peroxyacetic acid, penoxsulam, sodium carbonate peroxyhydrate, and triclopyr to prevent algal growth and invasive aquatic weeds from impacting the recreational uses of its clients’ lakes and ponds, and from obstructing water flow in stormwater catchment basins.

The Discharger is amending its existing Notice of Intent for regulatory coverage to include the following waterbodies:

• Lake Sacco

• Several golf course ponds owned and operated by the Oakmont Village

Association

• Lake Senegal

The additional waterbodies are all located within Sonoma County. Aquatic pesticide applications to the above waterbodies may result in a discharge to Atascadero, Oakmont, and Stemple Creeks.

General Permit Requirements To comply with the Aquatic Weed Control Permit, the Discharger shall:

a. Provide aquatic pesticide applicators a copy of the amended Notice of Intent, amended Aquatic Pesticide Application Plan, and all other related materials.

b. Ensure that all personnel and contractors applying aquatic pesticides under this amended Notice of Applicability understand and comply with the terms and conditions of the permit and the provisions of the Aquatic Pesticide Application Plan.

c. Take all necessary steps to minimize or prevent pesticide spills, pesticide residue contaminated water, and other pollutants from entering waters of the United States.

d. Review and update the effectiveness and adequacy of the control measures and best management practices. Documentation of all changes to the existing best management practices, Aquatic Pesticide Application Plan, or other information on file with our office shall be submitted to the State Water Resources Control Board for review and comment.

e. Submit all information required per this amended Notice of Applicability to the following address:

State Water Resources Control Board Division of Water Quality NPDES Wastewater Unit 1001 I Street, 15th Floor Sacramento, CA 95814

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Discharge Monitoring and Reporting Requirements To comply with the monitoring and reporting requirements of the Aquatic Weed Control Permit, the Discharger shall:

a. Timely inspect the receiving waters, control measures and best management practices to detect any conditions which violate receiving water limitations and other requirements in the Aquatic Weed Control Permit.

b. Conduct monitoring and reporting per the provisions and requirements in Attachment C of the Aquatic Weed Control Permit.

c. Include the following certification in all monitoring reports:

“I certify under penalty of law that this document and all enclosures were prepared under my direction or supervision in accordance with a system designed to ensure that qualified personnel properly gather and evaluate the information submitted.

Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations.”

Failure to comply with the requirements set forth in this amended Notice of Applicability and the Aquatic Weed Control Permit may result in an enforcement action as authorized by provisions in the California Water Code. Any discharges of waste other than those described in this amended Notice of Applicability are not authorized pursuant to the Aquatic Weed Control Permit.

If you have any questions regarding this amended Notice of Applicability or the Aquatic Weed Control Permit, please contact Gurgagn Chand at (916) 341-5780 or Gurgagn.Chand@waterboards.ca.gov.

Sincerely, Phillip Crader, Deputy Director Division of Water Quality

Cc [via email]:

California Department of Pesticide Regulation Jennifer Teerlink, Assistant Director Jennifer.Teerlink@cdpr.ca.gov

North Coast Regional Water Quality Control Board Charles Reed, Supervising Water Resource Control Engineer Charles.Reed@waterboards.ca.gov mailto:Gurgagn.Chand@waterboards.ca.gov mailto:Jennifer.Teerlink@cdpr.ca.gov mailto:Charles.Reed@waterboards.ca.gov

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Mona Doughertry, Senior Water Resource Control Engineer Mona.Dougherty@waterboards.ca.gov mailto:Mona.Dougherty@waterboards.ca.gov