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REP04748
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REP04748
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Last modified
8/24/2016 11:35:54 PM
Creation date
11/26/2007 10:53:45 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981028
IBM Index Class Name
Report
Doc Date
12/11/2001
Doc Name
1999 AHR & ARR WATER QUALITY
Annual Report Year
1999
Permit Index Doc Type
HYDROLOGY REPORT
Media Type
D
Archive
No
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Six ground water monitoring wells were sampled by CEC on a quarterly basis <br />in 1999. These wells are designated AMW-1, AMW-2, DH-96, DH-122, <br />FPW and SMW-2. Water quality analysis includes both the field and <br />analytical laboratory testing of water samples collected from these wells. <br />Field Measurement: <br />Static water level is a tape measurement from the top of the well casing (a <br />known ground elevation) to the current water level in the well, and precedes <br />any sampling activity. Water sample temperatures are deternuned from a <br />temperature probe placed in the sample as soon as it is collected. Specific <br />conductance is obtained using an electrical conductivity meter. Each field <br />water sample is tested for pH against a baseline pH neutral solution (7.0), <br />after adjustment to the water temperature of the individual sample. All data <br />collected during field-testing is recorded in a field logbook, which is kept at <br />the Keenesburg Mine office. A graphic display of this information (most <br />recent five year period) can be found in the Section; "Analysis of Water <br />Sampling Field Data". <br />Laboratory analysis: <br />• The wells are sampled in a sequence that follows the order of least to greatest <br />level of salinity. At the end of 1999 this sequence was: (1) FPW, (2) AMW- <br />l, (3) DH-96, (4) DH-122, (5) SMW-2. [Ash Monitor Well No. 2 (AMW-2) <br />began to show possible signs of recharge in 1999. A small quantity of water <br />was observed in this well during the third and fourth quarterly samplings. <br />The amount is not yet sufficient to either purge the well, or to obtain samples <br />for laboratory analysis. The well is located near the northeast edge of A-Pit, <br />in a highly disturbed, then reclaimed overburden area. The final reclamation <br />of the adjacent A-Pit area (completed this year) may be influencing the wells' <br />ability to recharge.] <br />Copies of the analytical laboratory test results are available in tl~e pages <br />following this text. Each ground water monitoring well was sampled in <br />accordance with the "permit procedure". The "B" designation following the <br />well identification indicates only that the laboratory sample was obtained <br />after initial field sampling, well purging and a subsequent (second) field <br />sampling. The 1999 ground water monitoring test results appear to be <br />consistent with results from previous water quality analyses. <br />1 <br />AI-tR-1999 -45- <br />
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