Laserfiche WebLink
<br />~ <br /> <br />-5- <br /> <br />only the laboratory testing results but also the results of evaluations of, <br />field trial installations. In other words, before flatly stating what con- <br />stitutes a good high-quality clay, it is helpful to also consider where and <br />how the clay is to be used. <br /> <br />FIELD IN&TALLATIONS <br /> <br />A total of 21 installations of local clays in ditches and ponds within <br />the District area have been evaluated. With the exception of one near <br />Colorado Springs, all of the evaluated installations were in the District <br />area above Pueblo. All but 5 of the installations were made with the 849 <br />clay from near Howard. <br />The installation evaluations are not again tabulated since Table ill <br />and Map 2 of the 3rd Quarterly Progress Report to the District accomplished <br />this purpose. The results of the evaluations are incorporated in the <br />DISCUSSION OF INITIAL RESULTS section of this report. <br />In general, installations of two types were evaluated: <br />1. Ditch installations -- Since most of the installations <br />were made in steep rocky ditches, a multiple-dam method of'washing the <br />bentonite into place in the ditch banks an.d bottom was generally adopted. <br />2. Pond installations -- Most of the pond installations <br />were of the surface mixed-membrane type, where the bentonite is spread <br />on the ground surface in the pond and mixed into the sub-soil but not covered. <br /> <br />MISCELLANEOUS ACTIVITIES <br /> <br />While most of the-Colorado State University clay project activities <br />have, to date, been concentrated on (1) preliminary sampling of potential <br />deposits,(Z) laboratory evaluation of the clay samples, and (3) evaluation of <br /> <br />1039 <br />