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Mr. Carl Mourn <br />September 14, 2005 <br />Page 4 <br />If the proposed trigger is reached, the following actions will take place: <br />1. Cessation of any dewatering operations at the Heit Pit. <br />2. Completion of au investigation to assess the cause(s) of the reduced grotutdwaier levels (this <br />will be completed within 30 days}. <br />3. Implementation of one or rnore mitigation measures. <br />92EQUEa'f '~C)~ T~CHf~9CAL R~4P1~9~2h° <br />h is requested that the subject permit be revised to reflect the following: <br />I. The groundwater trigger in the pern~i+. be changed, as previously described. <br />2. S~+ecific iauguage on the process to be followed fo°' implementatio,l of mitigation measures <br />be revised, as described previously in this request. <br />3. The frequency of monitorng of the piezometers be reduced to bimonthly starting o^ <br />October 1, 2005. Monthly monitoring would resume upon initiation of consinte[ion of the <br />slurry wall or other mining activities, and cartinue throughout the lire ofthe o_~. -anon. <br />This TR is based on a limited amount of data that may ^ot be totally representative of long-term <br />groundwater conditions. The owner reserves the right to submit a TR in the fuhrre to modify the <br />trigger, as justified by additional data. <br />We appreciate your assistance with this request. We are available to answer any questions that you <br />may have, or provide additional information, if needed. <br />Sincerely, <br />WRIGHT 1~'ATER ENCrI~~,'?RS, INC. <br />tom. iv:. <br />7 v~..~ t ., . . <br />B fit V`~' ~ ~-'~ i ~~'~'. ..~:;.`ve. <br />Y ~_._Y-c__~--` - - - <br />~. <br />~ .ay U, j~~1"itt. ~'.G. <br />~~v '. <br />Gncls. <br />ce: SW Chambers, LLC <br />C-APF~rl41 {1U2V000ard4tr lu CDMQduc <br />