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HYDRO28175
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HYDRO28175
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Last modified
8/24/2016 8:47:27 PM
Creation date
11/20/2007 9:03:39 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1996084
IBM Index Class Name
Hydrology
Doc Date
11/29/2004
Doc Name
3rd Qtr 2004 DMRs
From
Peak Project Management
To
DMG
Permit Index Doc Type
DMR’s
Media Type
D
Archive
No
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Pond 9A TSS, Daily Max. 70 88 <br />TSS 30-Day Average 35 RS <br />'total Iron, Daily Max. 7.0 8.44 <br />30-Day Avcr. 3.5 8.44 <br />Pond 005 is remote from the developed mining area and was inaccessible until several days after the storm <br />event. I[ was not observed discharging, but a careful examination alter the roadway was reopened, <br />indicated that it probably had discharged. No mining related disturbance has occurred in this drainage <br />(other than pond construction). <br />Ponds 007A, 008 and 009 and 009A all discharged through their emergency spillways. Ponds 008 and 009 <br />also experienced Flow over their embankments with some erosional damage to their oulslopes. The <br />metering weir at 009 was washed out of position. The storm event exceeded the regulatory pond design <br />criteria. All damage has been repaired and the ponds are now functioning ns designed. <br />An analysis for Total Manganese was not performed on the samples submitted to the lab.. Lorencito <br />regrets the loss of this data and has instructed the lab to perform this analysis in the future. Please note that <br />any results would have been eligible for alternate limitations for precipitation greater than 10-yr 24-hour <br />storm event. <br />Please contact me ifthet'e are any questions or if additional information is required. <br />Sin rely, JJ// <br />/~l <br />Ronald G. Thompson <br />for Lorencito Coal Company, LLC <br />
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