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JRN 30 '96 01~20PM COLOWYO CORL P.13i13 <br />1 <br />~ IABLE VALUE STANDARDS <br />(Concentretlone In u9/I unless noted) <br />PARAMETERrr~ f TABLE VAWE STANDARDS ~R~ r'~~ <br />i <br />ACUte s are.N77tIn(h•M••••)]•e.ife•) . <br />Zinc <br />Chronic . et0•~re(ler~•H••t.»•°.rap <br />~_F <br />e <br />(t) Metals~re stated as dissolved unless otherwise epecifled. <br />(2) Hardness values to be used in equations are In mp/I as caldum carbonate. The hardness <br />values used In caleulatlnp the appropriate metal standard should be based on the lower s5 <br />per cam confidence Ilmk of the mmn hardness valua.et the periodic low flow crkeria ea <br />detannlned from a regression analysis Of ske-speck data. Where InaufHclent ahe•epecklc <br />data exists to donne the mean hardness value at the pedadk low flow crheri5, representative <br />regional data shall be used to perform the regression analysis. Where a regression analysis <br />b not appropriate, a ehe•apectfic method should be used. In ealeulating a hardness value, <br />regression analyses should not be extrepolated pest fhb p01rn that data exist <br />(3) Both acute and chronic numbers adopted 88 sVeam standards are levels not to be exceeded <br />more than once every three years on the averege. <br />(4) FT = 10'07 t:o.rcu). r <br />AP lase than or equal to j lees than or equal to,9p <br />1 f <br />FT = 10 .o~po.rL t(- <br />4less or equal toI less than or equal tol~A <br />TCAP - 20° C cold water aquatic Ike species present <br />I <br />TCAP = 26° C cold water aquatic Ike specles~abeent <br />FPH = 1; $ less tftan~ less than or equal to$ <br />FPH = 1 + 10rr•''°"r: 6.5 less then or equal to}z lees than <br />1.26 or equal to ~ <br />FPH means the acute pH adjustmem factor, defined by the above formulas. <br />Fi Means the acute temperature ed)uatment factor, defined by the above fomrulea <br />T means tempereture measured In degrees eelaiue. <br />TCAP means tempereture CAP; the maximum tempereture which affects the toxlchy of <br />ammonia to salmonid and non-sslmonld fish groups <br />i <br />NOTE: It the calculated acute value Ia lees than the celCWated chronic value. then the <br />r~leulatsd chronic value shall be used a8 the acute standard. <br />5~ <br />