Section 096-587-5 - Flow requirements for Class A, B, and C watersA.Narrative requirementfor Class A, B, and C waters. Withdrawals or other direct or indirect removal, diversion, activity, or use of Class A, B, or C waters must maintain flows sufficient to protect all water quality standards including all designated uses and characteristics of the assigned class unless as a naturally occurring condition. When flow alteration occurs in Class A, B, or C waters that drain to a downstream Class AA water, the Class AA flow requirement, provided in section 4 of this chapter, shall be protected. Withdrawal or other direct or indirect removal, diversion, activity, or use of these waters that causes the natural flow to be altered shall occur as provided in paragraphs 5-B or 5-C below.B.Flow requirementsfor Class A waters. Flow requirements established by the standard allowable alteration in Class A waters may not be less than the seasonal aquatic base flow as defined, except when natural conditions alone cause those flows to be less. Withdrawal or other direct or indirect removal, diversion, activity, or use of Class A waters may not occur for more than two consecutive seasons under the standard allowable alteration. The Commissioner may establish,pursuant to sections 7 or 8 of this chapter, site-specific water flows that are protective of all water quality standards, including all designated uses and characteristics of those waters.C.Flow requirementsfor Class B and C waters. Flow requirements established by the standard allowable alteration in Class B and C waters may not be less than the seasonal aquatic base flow as defined, except when natural conditions alone cause those flows to be less. The Commissioner may establish,pursuant to sections 7 or 8 of this chapter, site-specific water flows that are protective of all water quality standards, including all designated uses and characteristics of those waters.06- 096 C.M.R. ch. 587, § 5