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ti <br /> <br /> <br />t4If1E ID k OR PROSPECTING ID % <br />IPIS PECTIODI DATE 1/13/99 <br />(Page 2) <br />M-77-348 <br />OBSER'lATIONS <br />INSPECTOR'S IPIITIAL:i ACS <br />The Di~iision of Minerals and Geology is currently reviewing technical revision TR-OJ to the Boettcher <br />Quarry permit. This technical revision is a proposal to bat kf ill cement kiln dust (CKD) into a water <br />filled section of the played out A-band quarry. Placement of CKD into the water pond is expected cause <br />an increase in the pH of Che water from the current pH level of 8 standard units to a pH of <br />approximately 12. Division of Wildlife biologist Mike Sherman was present for this inspection to <br />evaluate the potential for wildlife usage of the of the quarry pond. Use of tt~e pond by waterfowl <br />would be of particular concern in that the elevated pH water could lead to wildlife mortality as <br />discussed in the TR-03 application. <br />A CKD dump located co the north of the quarry pond of interest was inspected. This CKD dump has been <br />filled Co capacity and capped with calcareous shale overburden. The CKD dump area proposed in TR-03 <br />was inspected. This area is filled with water, has a near vertical B-band h:.ghwall at its east <br />perimeter and a steep sided spoil pile at its wese perimeter. There are dams constructed of quarry <br />overburden at the north and south ends of the pond to separate the pond from the active and closed CKD <br />dump areas. <br />The active CKD dump area was inspected. This area is located in the A-band quarry to the north of the <br />water pond discussed in TR-03. A small water pond has developed on top of the CKD placed in the active <br />dump. <br />The one upgradient and two downgradient monitoring well locations discussed in TF.-03 were inspected. <br />IC was noted Chat the northern downgradient well is located below (to the east) of the active CKD <br />dump. However, Mr. Toelle stated chat the well had been installed and an initial water quality sample <br />had been collected prior to the quarry above the wells being used as a CKD dump. 'Che monitoring wells <br />are equipped with dedicated bailers. The operator is directed to keep the monitoring wells locked in <br />order to protect the integrity of future water quality data. <br />Other water filled areas of the A-band quarry, located farther to the north, were inspected. These <br />sections of the quarry are less confined by steep slopes and highwalls at the west .ind east perimeters, <br />and would be expected to see greater use by both birds and terrestrial wildlife. <br />The truck that is used to haul CKD from the cement plant to the CKD dumps was inspected. The bed of <br />the dump truck is fully enclosed. There is a steel lid over the top of the enclosed bed. <br />The Division of Wildlife will provide an opinion and any recommendations regarding the potential for <br />wildlife impacts related co the CKD disposal plan presented in TR-03. It will then be up to Holnam and <br />the Division of Minerals and Geology to address the potential for wildlife impacts prior to approval <br />of the technical revision. <br />There is a significant amount of surface water impounded in the A-band quarry. Also, water impounded. <br />in the active E-band quarry after rain or snowmelt is pumped up to the A-band quarry. Holnam on <br />occasion, uses water impounded in the A-band quarry for dust control. Water captured and impounded in <br />the quarry is unavailable to downstream users. Holnam is directed to provide documentation or a <br />demonstration that capture of runoff in the quarries does not harm downstream wa t•tr rights. <br />cc: Carl Mount. DMG <br />Mike Sherm,in, DOW (via FAX1 <br />I & E Contact Address <br /> ^ CE <br />NAME Michael Toelle ^ BL <br />OPERATOR Holnam. Inc. ^ FS <br />STREET P.O. Box 1596 ^ HW <br />CITY/STATE/ZIP La Porte. CO 80535 ^ HMWMD (CH) <br /> ^ SE <br /> WQCD (CH) <br />