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Quality and quantity data at the baseline stations are collected by utilizing <br /> grab samples or a combination of single stage samplers and crest-stage gages. <br /> <br />~~) During the life=.of the mine, and <br />am <br />m <br />m <br />lete <br />le <br />k i <br />de <br />d c until such time as the <br />from these sites will h postmining reclamation <br />e talcP~nn a uarterl <br />(, p <br />p <br />wor <br />e <br />e <br />o <br />, s <br />s <br />s y <br />,~ ~' <br />~' basis if any flow occurs. This schedule will be adjusted to take advantage of <br />/("' <br />5„ spring snowmelt run-off and to retrieve samples from the stage samplers as soon <br />~~`" after a run-off event as possible (page II C-64). " <br />Data collected from the USGS White River station will also be analyzed by the <br />applicant on a quarterly basis. A sampling crest gage will be installed at the <br />outlet of each sediment pond and checked monthly. Water quality data collected <br />from each monitoring station will be submitted ouarterly to the regulatory <br />authorit within 60 to 90 da s following the end of each quarter (age II <br />~- <br />Although the applicant has not yet obtained an NPDES permit, monitoring of all <br />discharges will be conducted in accordance with that permit when it is issued <br />~~ <br />M1-J6, M{;~" ( page I I C-66A) . In 1 i eu of those requirements, the appl i cant has 1 i sted the <br />AFL sampling parameters proposed for the monitoring program. These parameters in- <br />clude those required by section 4.05.2(7) of the Colorado Permanent Regulatory <br />Program: discharge, pH, specific conductance, air and water temperature, ammo- <br />nia, bicarbonate, calcium, chloride, total iron, magnesium, total manganese, <br />phosphate, potassium, sodium, sulfate, total suspended and dissolved solids. <br />Reservoir Construction Methods <br />The proposed sedimentation ponds will be insitu, semi-insitu with partial <br />embankments, or earthen embankment type structures. The D-Portal pond is an <br />embankment type and the Refuse Disposal ponds are semi-insitu, as are the very <br />small ponds along the coal transport system. While the larger of the two <br />process ponds is semi-insitu, the smaller overflow pond is proposed as insitu. <br />The embankments for the four major ponds will be constructerusing acceptable <br />cohesive fill material from the permit area (page V-19). Specifications <br />require that fill be compacted in 12-inch lifts to 95 percent maximum density <br />(see Map 78 in the permit application). <br />10 <br />