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,.~ __: <br />~~~ Laboratories. Inc. <br />April L8, 1996 <br />Mr. Rich Atkisson <br />Kennecotc Energy - Colotvyo Goal Co. <br />5731 State Hwy, 13 <br />Meeker, CO 81641A199 <br />Dear Mr. Atkinson: <br />Over the past several weeks ACZ hac been ruelving samples from Colawyo's sampling operation for <br />Settlrablt: Solids analysis. The ample matrix has pmven to he quite a challenge in dtxermining what <br />level otseuleahie solid material ut rtgwrt. <br />ACZ performs this test by Standard Medtods 2540 F. This tea3tnique uses an Imhotfi cone m quantitate <br />settirable solids over a spexificd amoum of time (1 hour). These samples- specifically Ne tiulch A site <br />(lab number L8769-02) appear m have a colloidal suspnacion that, neither settles out physically on the <br />fwtrom of the cone or floats nn rop of the water layer. The method indicates m not includo floating <br />matnrla[, but dues not address this type of situation. After the specified hour them does appear m be a <br />slight separation between a watu layer and the atlloidal layer, in the top few Inches of the water <br />column. The colloidal layer rrachm ail the way at the Mntom of the woe. The tblluidal layer data <br />not appear to he tnatrrial that looks like typit~l senlcahle solids. in fuY, the material appears m have a <br />gelatinntu rotate <br />Evidently, the measurement prortse u to whether this material is at:Nally settlt~ble is highly <br />subJe~xivn in ttaturti. DlKercnt analysts and supervisory personnel have debated on what m rtport. <br />This type of matrix or situation is ntu addressed In the method. <br />(f you have any questions or Curtner dirtxtians un yaur analysis pmgram please give me a call at <br />(800)3345493. <br />Sincerely, <br />Q,~i[.l ...c.j~ <br />Scott Habtxmehl <br />Project Manager <br />ATTACHMENT 1 <br />30400 Oownhlu Or/ve PhonB (800) 334.5493 <br />set un iolM A70.99 /R <br />