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Page 2 > t SUMMARY OF ANIMAL WASTE MANAGEMENT REGULATIONS (From California Code of Regulations, Subdivision 1, Chapter 7, Subchapter 2) f General Standards For Surface Water The discharger shall prevent animals at a confined animal facility from entering any surface water within the confined area. i Wastewater Management a Design Storm for Run-On/Run-Off Control - Confined animal facilities shall be designed and constructed to retain ( ) g { ) l� all facility wastewater generated,together with all prescription on,and drainage through,manured areas during a 25-year, 24-hour storm. (b) Manured Area Run-On Exclusion-All precipitation and surface drainage outside of manured areas,including that collected from roofed areas,and runoff from tributary areas during the storm events described in part(a),shall be diverted away from manured areas,unless such drainage is fully retained. RWQCBs can waive application of such requirements only f in specific instances where upstream land use changes have altered surface drainage patterns such that retention of flood flows is not feasible. (c) Design Storm(for Flood Protection) (1) Retention ponds and manured areas at confined animal facilities in operation on.or after November 27, 1984,shall be protected from inundation or washout by overflow from any stream channel during 70-year peak stream flows. i (2) Existing facilities that were in operation on-or-before November 27, 1984 and that are protected against 100-year ' peak stream flows must continue to provide such protection. Facilities,or portions thereof,-which begin operating after r{� November 27, 1984 shall be protected against 100-year peak stream flows. 1' t (3) The determination of peak stream flows shall be from data provided by a recognized federal,state,local,or other agency, 4 (d) Retention Pond Design -Retention ponds shall be lined with,or underlain by,soils which contain at least 10 percent clay and not more than 10 percent gravel or be lined with artificial materials of equivalent impermeability. (e) (Discharge To Disposall[Jse Fields-The RWQCB shall allow the discharge of facility wastewater and of collected precipitation and drainage waters to use or disposal fields only if such discharge is in accordance with the regulations in the ! 1 following section titled"Use or Disposal Field Management". Other allowable discharge is to wastewater treatment facilities approved by the RWQCB. Use or Disposal Field Management (a) Reasonable Soil Amendment Rate-Application of manure and wastewater to disposal fields or crop lands shall be at i } rates which are reasonable for the crop,soil,climate,special local situations,management system,and type of manure. (b) Run-Off&Percolation- Discharges of facility wastewater to disposal fields shalt not result in surface runoff from disposal fields and shall be managed to minimize percolation to ground.water. Management of Manured Areas r Manured areas shall be managed to minimize infiltration of water into underlying soils. FS-#2B.DOC i L I