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Fern_ Colifom <br />Results <br />1 • Concen',rations o° fecal coliforms in the t:or`..h Fork ranged Store C1-2900100 ml <br />ever t`:e ~;a;; -October, 197c period. relatively let: values of ~1-63~iO0 Rtl vrere <br /> <br />four,:; for the months of h`.ay, June, azd most, of Juiy (periods of higher runoff), <br />ho~,:ever With values e: 500 - 29;rC v:ere fund !'roc: t'r,e end of July to the middle <br />of September (periods of lo~,~er flo~;a). Concentrations then cropped in Gctober <br />and ranged from 1 - 3bO. <br />Ih:ring the Stay-July period there rras a tender:c;; (1, oS 5 dates) to slightly <br />lo.,•er levels of colifor.~ in the certrol area as ccmoared to doti~rrstream stations. <br />Generally, during tr.is pe~icd, the lov:ermost statiGn (~,~'-4a or -l,b) ~;as .nigheSt. <br />Ao:rever, during the ln:gcst-September pe:-iod there ~:;a=_ a marked increase in fecal <br />CChfO_^..1 COnCentrat1Or.5 at StatlOn I.F-?5, (just be'_orr th° lO~CGLt area) as CO-- <br />pared to ti:e ccntrol or do:mstrea;. stauicrs. D.:ring Octcber, o•rerall concentrations <br />r• were loi•rer, but the control station. eras still consistently (L, of 4 dates) lo•,r_r <br />Y <br />` than do~,:7stream. stations. <br />Duplicate sazpies rWz on txo dates in October shoxed an acceptable level of <br />ti-ariability. <br />Comoar;sons <br />Previous data frorc the Borth Fork and Stevens G~il.ch indicated low levels of <br />;ecal coliSoms, with a?1 but one value fxvm the I2orth Fork being 32100 ucl or less <br />and the single hig,`~est concentration being j40~10O m1. <br />Sir_nificance <br />State standards of 1000100 nl appear to have been exceeded in the north Fork <br />• study area during October and may have originated on Westmoreland land. Control <br />• one value of <1 believed to be anomalous <br />3-19 <br />