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Code of Federal Regulations
C.F.R. Title 40—Protection of Environment
CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY
SUBCHAPTER D—WATER PROGRAMS
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PART 133—SECONDARY TREATMENT REGULATION
§133.100 Purpose.
§133.101 Definitions.
§133.102 Secondary treatment.
§133.103 Special considerations.
§133.104 Sampling and test procedures.
§133.105 Treatment equivalent to secondary treatment.
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