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PERMFILE43941
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PERMFILE43941
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Last modified
8/24/2016 10:46:24 PM
Creation date
11/20/2007 11:45:34 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981014A
IBM Index Class Name
Permit File
Doc Date
12/11/2001
Section_Exhibit Name
2.05.6 MITIGATION OF SURFACE COAL MINING OPERATION IMPACTS
Media Type
D
Archive
Yes
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Groundwater monitoring sites include monitoring wells MW-8, 10, 16, 23 and 65. <br />• These wells specifically monitor water levels and quality in the Jack O'Lantern and <br />Red Arrow seams. Water levels will be measured in all monitoring wells on a quarterly <br />basis. In addition, water quality samples will be collected and analyzed on a semi- <br />annual basis. It should be noted that water quality samples will not be collected for <br />MW-8 due to oil contamination within the casing, occurring at the time of drilling, <br />which has the potential to bias monitoring results. <br />In order to evaluate patterns and quantities of mine inflows, EFCI will identify all <br />significant sources of mine inflow and will show their locations on a mine workings <br />map. Inflow quantities will be estimated and field water quality parameters (pH, EC, <br />temperature) will be measured. At a minimum, groundwater inflows will be identified, <br />flow quantities estimated and water quality parameters measured on asemi-annual <br />basis during the spring and fall of each year. In addition, if new groundwater sources <br />are intercepted be advancing mine working, the relevant inflow information will be <br />obtained at the time the inflows are first identified. <br />In order to ensure compliance under applicable provision of Southfield's NPDES <br />• permits for both mine and loadout area discharge points, EFCI will, during periods of <br />active flow, monitor discharge on a weekly basis, obtain grab samples for settleable <br />solids, and measure pH at the time of flow monitoring. If there is and visible sheen on <br />either the pond surface or downstream from the discharge point, a grab sample for <br />oil and grease will also be obtained. In addition, in order to ensure that sedimentation <br />ponds are functioning properly, EFCI will obtain water quality samples at discharge <br />points on monthly basis if discharge occurs and will analyze samples for total <br />suspended solids and total iron. <br />Both surface and groundwater quality samples will be collected, labeled and <br />transported to a qualified analytical laboratory for analysis. Proper sample collection, <br />preservation, handling, and storage methods will be utilized at all times to preserve <br />the integrity of the samples and ensure validity of analysis results. Water quality <br />samples will be analyzed for the specific parameters listed on Table 12, Water Quality <br />Analysis Parameters, presented in Section 2.04.7, Hydrology Description. All water <br />monitoring analysis results will be recorded, reviewed to identify potential problems <br />or trends, <br />2.05.6-53 Revised 2!29/96 <br />Minor Revision No. 29 <br />
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