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~' 4. <br />East Fork of Marcos River at water quality Site F53. At this site, which is <br />between the Red P.~row Mine and Cold Dollar hi_ne, pE; was ?.5~ and iron .50 ..q/1, <br />both v~oiatzons of a+ater quality standards. Con- sideratle iron sulfate (brown <br />stains) deposition is evident with no aquatic insects. Tur'oicity (whie, milky <br />color) was 15 hTU, which is very high for a stream d~r'_r.c Bali baseflcw. Dave <br />Yoder indicated that he observed iron deposits (altiiouch not c:~e turbidity) <br />below this site 1'_ years ago. <br />UPS - <br />' =5~~2:?23n 9Yi <br />