1B – Animal Waste

Content last updated June 23, 2014

Management Measure

Limit the discharge from the confined animal facility that is not a Concentrated Animal Feeding Operation (CAFO) by: containing both facility wastewater and the contaminated runoff from confined animal facilities at all times, up to and including storms exceeding a 25-year, 24-hour frequency event, and managing stored runoff and accumulated solids from the facility through an appropriate waste utilization system that is consistent with Management Measure 1C (nutrient management).

Management Practices

The purpose of this management measure is to limit the discharge of manure, litter, and process wastewater from a confined animal facility that is not a CAFO. Facilities that are defined as CAFOs under USEPA regulations (40 CFR §122.23) are considered point source dischargers and must secure coverage under an NPDES permit. Such facilities are subject to the terms and conditions of that permit.

All other confined animal facilities are considered nonpoint sources. These nonpoint sources, however, must still comply with animal waste discharge standards found at sections 22560 through 22565 of Title 27 of the California Code of Regulations and with any applicable WDRs or waiver. The following practices are recommended for controlling and preventing NPS pollution from confined animal facilities. These practices may also be helpful in achieving compliance with statewide requirements:

  • Liquid manure storage structures should be designed to store facility wastewater and the contaminated runoff from confined animal facilities at all times, up to and including storms exceeding a 25-year, 24-hour frequency event, and should be consistent with nutrient management plans designed for the facility.

  • Dry manure should be stored in production buildings or storage facilities, or otherwise covered to prevent manure from coming into contact with rainwater and entering surface waters through runoff.

  • Compost manure where appropriate, and reuse as fertilizer and/or soil amendment.

  • Each facility should have a nutrient management plan that is consistent with Management Measure 1C (nutrient management).

  • Clean water should be diverted from contact with feedlots and holding pens, animals, and manure storage facilities through the use of berms, dikes, diversions, roofs, or enclosures.

  • Dead animals should be buried an adequate distance from surface and/or ground water so that quality of water is not affected.

  • See page of liquid wastes to ground and surface water should be prevented through the use of impermeable linings for liquid storage ponds and concrete pads or other suitable material for solid storage and heavy animal traffic areas.

Programs

  • Biologically Integrated Farming Systems (BIFS) is a program to help growers enhance environmental quality while maintaining yields and profits. BIFS projects use on-farm demonstrations and a collaborative model of outreach and extension involving public-private partnerships.

  • California Dairy Quality Assurance (CDQA) Program was created to assist dairy producers with navigating and complying with the rules and regulations governing the industry. The CDQA program is a voluntary partnership between dairy producers, government agencies, and academia to address environmental stewardship, animal welfare, and food safety issues. The environmental stewardship module has three components: education, self-assessment, and third-party evaluation, terminating in certification, and focuses on compliance with federal, state, and local water quality regulations. A comprehensive checklist is used as the assessment tool in the certification process.

Information Resources

References

USDA. No date. Electronic Field Office Technical Guide for California. U.S. Department of Agriculture, Natural Resource Conservation Service.

USEPA. 2002. Chapter 4: Management Measures. In National Management Measures for the Control of Nonpoint Pollution from Agriculture. U.S. Environmental Protection Agency, Washington DC.


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