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1 <br />~ 2.0 <br />' Measurement and Data Handling <br /> From a number of existing well locations in the vicinity of the proposed operation, 10 <br />' wells were selected for monitoring. These include locations upstream and downstream of <br /> the site, irrigation wells and monitoring wells, at a variety of distances from the mining <br /> face. <br /> These wells will be measured on a monthly basis. Measuring should be done at <br /> approximately the same time of every month. Care should be taken to use similar <br /> methodology each time a measurement is taken. This care ensures that the samples taken <br /> are consistent and accurate. <br />i h <br />fi <br /> T <br />e <br />rst time each well is measured, an inventory of each well should be done, noting the <br /> depth of the well, whether it has a liner, type of lining, type and size of pump (if <br />' available), and any other information that may be useful for identifying the well itself. <br /> After this inventory is taken, it should be noted when measurements are taken at the well <br /> if any of the conditions have changed. <br />' f <br />li <br />i <br /> I <br />no <br />ning or well cas <br />ng is present, some sort of cap or shallow liner must be provided. <br /> A mark should be placed on the lining in a clear manner to indicate where the <br />' measurement will be taken from. Ideally, each well should be clearly marked on the <br /> outside with the number corresponding to the data log entries, to minimize the possibility <br /> of error. Flagging or marking should be located at each well to ensure the location can be <br />' found even under snow cover. <br /> A number of conditions can arise in the field that can be ambiguous and necessitate the <br />' field personnel make decisions about how to record information. In certain conditions <br /> the well may have no water in it. This should be recorded as "not available" and a note <br /> added to the data log, stating the well as empty. It may be possible for water in the well <br />' to freeze under certain conditions. In this case, measurement should also be taken as "not <br /> available", and the condition noted. More likely, at the time of measurement the well <br /> may be in use for irrigation. Ideally, the well should not be pumped for at least 24 hours <br /> prior to groundwater level measurement. Under no circumstances should a measurement <br /> be taken immediately after the pump has been turned off and removed. Obviously this <br /> will result in a false groundwater reading. If the well is being pumped, that condition <br />' should be noted in the data log and the reading taken the next available day. <br />Ideally, conductivity and pH should be measured after three well volumes have been <br />purged by pumping. This maybe impractical to accomplish in practice. Note should be <br />made on all data log sheets as to a consistent method. If the standing water is not purged <br />from the well, this may result in measurements that are not consistent with the ambient <br /> <br />