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Whiteiver Nahcolite Minerals III'II'II'II "'I'II <br />February 4,1998 <br />RECEIVED <br />Mr. Gregg R. Squire, Environmental Protection Specialist <br />Division of Minerals an(1 Geology FEB 0 9 1998 <br />1313 Sherman St., Roorn 215 <br />Denver, CO 80203 Division of Minerals & Geology <br />Subject: Clarification Notification RE: Monitoring Plan for White River <br />Nahcolite Minerals File No. M-83-194 ` <br />Dear Mr. Squire: <br />Enclosed please find a a~py of White River Nahcolite's revised monitoring plan. <br />If approved by the BLM and EPA, this plan will add two monitoring wells drilled <br />in 1997 and decrease water quality sampling at remote wells. Currently, WRN <br />has 16 wells providing continuous water level data, and 17 providing water <br />quality data. Please review the letter to the BLM which describes in more detail <br />the rational for the proposed changes. Water quality plots (attachments 1,2 and <br />3) of select parameters are enclosed for each well, please note the consistent data <br />for the past 2-5 years. F3ased on eight years of water level and quality data, <br />water level monitoring has been intensified because this is the first indicator of <br />mining affects, and water quality sampling frequency at remote wells IRI- <br />4,5,6,7,8 and EX-2, 89-1,2,3 will be reduced. Pages 22, 23 and 23 are the <br />pages which have been significantly changed, with editorial changes throughout <br />the remainder of the plan. No changes to the biological section, including <br />revegetation sampling were made. Please replace the former monitoring plan <br />with this revised plan. <br />If there are any questions or need for additional information, please contact me. <br />Sincerely, <br />~~~~~~z_ <br />Ed Baker, REM <br />Envir./Safety Manager <br />cc: Meeker BLM <br />Whits Rlvsr Naheollt~ Mlnerab, Limltsd Ll~blllty Company <br />P. O. Drawer 72, 320(1 Co. Rtl. 31, Rille, CO 81650 (tel) 970-876-367! (lax) 970-676.5666 <br />