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Biosolids Inspections

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 Inspection Frequency:  The inspection frequency for CDPS permits is generally every one to five years depending on facility size and other factors.  However, the Water Quality Control Division (division) has the authority to conduct inspections to CDPS permitted facilities without advance notice.

Preparation:  Each CDPS permit has different record keeping requirements.  The best way to prepare for an inspection is to review the requirements of the facility's permit.  Generally, for a Biosolids inspection, the following documentation must be available for the past five (5) years for review during a facility inspection (may include but not limited to):

  • EPA General Permit and Certification as generator of biosolids
  • Annual Biosolids Reports
  • Records of biosolids quantity and disposition (e.g. beneficial use, disposal)
  • Sampling and testing records (e.g., where, how, frequency, results) for Pathogen Reduction, Vector Attraction Reduction, Metals
  • Notice of Authorization for land application sites*
  • Field application records and soil analysis records*
  • List of current biosolids application sites and locations*

*Note:  These records may be provided by a contractor to the Permittee.  Although the Permittee may use a contractor to manage biosolids, a biosolids generator is still responsible for records even if they use a contractor, in accordance with 40 CFR503.  A contractor should provide records and reports to the generator entity (e.g., periodic reports, annual reports).

Field Review:  Depending on the location and inspection goals, a Field Review of the biosolids handling facilities may be conducted.

Response to the CDPS Inspection Letter:  The Division will document the CDPS inspection findings in a letter sent out approximately 45 days after the inspection.  The Division requests that the Permittee respond in writing to violations 30 days after the inspection letter date with a plan to address any violations.