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of this procedure , B is the multiplying factor taken from Table F6-1 of this procedure to convert the highest measured effluent toxicity value to the estimated 95th percentile toxicity value for the discharge , effluent flow is the same effluent flow used to calculate the preliminary wasteload allocations ( WLAs ) for individual pollutants to meet the acute criteria and values for those pollutants , AC is the numeric acute WET criterion or numeric interpretation of a narrative criterion established pursuant to section A.1 of this procedure and expressed in TUa , and Qad is the amount of the receiving water available for dilution calculated using : ( i ) the specified design flow ( s ) for tributaries and connecting channels in section C.1.b of this procedure , or where appropriate procedure 3.E.1.e of appendix F , and using EPA-approved State and Tribal procedures for establishing acute mixing zones in tributaries and connecting channels , or ( ii ) the EPA-approved State and Tribal procedures for establishing acute mixing zones in OWGLs . A field marker consists of a backslash character at the beginning of a line , followed by an alphabetic or numeric character , followed by zero or more printable characters , and terminated by a space , tab , or the end of a line . Statistics are available in a variety of formats to Harvard researchers , and we encourage you to contact a librarian in the Government Documents / Microforms Department or Numeric Data Services directly . A one character alphabetic or numeric code assigned to a series of phrases to denote changes or relationships between National Stock Numbers ( NSN ) and information type data in the field entitled phrase statement / unit of issue / conversion factor .