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PERMFILE69503
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PERMFILE69503
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Entry Properties
Last modified
8/24/2016 11:14:58 PM
Creation date
11/20/2007 10:54:43 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980003
IBM Index Class Name
Permit File
Doc Date
12/11/2001
Doc Name
SOIL AND FOUNDATION INVESTIGATION FOR THE PROPOSED FIVE EARTH FILLED EMBANKMENTS HAYDEN GULCH MINE
Section_Exhibit Name
APPENDIX Q
Media Type
D
Archive
No
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• - 17 - <br />SloEz Protection: Slo~.e protccticn c,=i 11 '.,e require~~ on Lne unstroa.^t <br />face and downstream too. Details similar to those _liscussed above <br />should be observed here. <br />I.~S ~ A,Ui':.F"iiATIG[d <br />Cams 2A through 5 will reguira only minimal instrus~entaticn <br />because the foundation soi.is arc not critical an3 the dam hei;hte arc <br />low. Minimal instrwnentation conoists of at leact one reference ;point <br />on the embaril~ment and one piezaneter to d^teriine tr:c piczo:~etric level <br />beneath tine dan. A s:r~ar~ of tha recoru-iendc:.' piczomet~rs an.l <br />monu,~nents is shoc~m on Table III. <br />• At Dam 1, erore critical observation during construction is <br />required. Felatively soft foundation soils and high water table will <br />require rpnitoring of the foundation ire water during cronstructicn. <br />Piezaneters 2 and s are to be included in the er.~aniknent ~rhen it <br />reaches elevation 7305. ,This is equivalent to a out 15 to 13 feet of <br />eJ~anlanent height above the din foundation. nt the titre the embankment <br />construction is at the elevation of the ~iezemetcrs, they should be <br />installed and protected from danage. Piezoc~cters are slotted pin' in <br />~:hich the static water level can be measured with a [~scote or ta:~. <br />Once these piezometers are installed, they should be read on a daily <br />basis and a remrd kept of the elevation of t5^ static crater level in <br />the tube. As the embank;nent reaches its msximuri hei•7ht, .ttfe two <br />• additional piezo~seters arx] monyments should ~ installed. <br />
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