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! /'7~.iZ Laboratories, Inc. <br />30400 Downhill Drive <br />Steamboat Springs, CO 80487-9400 <br />(303) 879-6590 (800) 334-5493 <br />FAX No. (303) 879-2216 <br />Terrell Johnson August 3,1993 <br />Cyprus Empire Corporation <br />P O Box 68 <br />Craig, CO 81626 <br />Dear Terrell, <br />Attached is a reprint of sample number WI/7013. The fecal coliform value was <br />changed to less than (< - 100 colonies per 100 ml. After our discussion on the <br />phone about this sample, I pulled the raw data to see why it was reported at TNTC. <br />The sample was ran on three dilutions. The 2x and 5x dilutions showed TNTC but the <br />100X dilution showed less than 100 colonies. I asked the analyst about this sample. <br />The analyst stated to me that there was alot of growth on the plates and that the <br />analyst had a hard time confirming if the growth was fecal coliform. <br />Based on this conversation, I made the decision to list the fecal coliform value at less <br />than 100 colonies because the colonies did not show the characteristic blue color that <br />is expected with fecal coliform. <br />If you have any further questions regarding this sample, please feel free to give me <br />a call at 879-6590. <br />Sincerely, <br />~~~ <br />l r`" <br />Frank E Polniak <br />Inorganic Lab Supervisor <br />