2011-08-08_REVISION - M1977493 (38)

Home Browse Search

Document Owner: Climax Mine Environmental Department Review Cycle: As Needed Document Name: Environmental Water Quality Sampling Groundwater Seep /Spring Sampling Last Revised /Reviewed On: 06 -27 -2011 Page 4 of 6 Document Class: EMS ar is considered indicative of sampling fresh formation water and is a more reliable indicator of purging than removal of a standard volume of water. If a well is evacuated during purging, it will be allowed to recharge until the water has recovered to 80% of the static level or for a period not exceeding 24 hours before sampling. If the well has not recovered sufficiently to allow sampling after 24 hours, this well may be noted as "dry" during this sampling event. Most equipment (pumps, hoses, bailers) will be dedicated to each monitoring well. All other equipment will be decontaminated before use at another sampling location. Dissolved metals samples will be filtered using a 0.45 micron disposable filter. The water sample will be pumped through the filter using a vacuum pump. An aliquot of approximately 100 ml will be run through the filter prior to collection into the sample containers, unless using sterile filters. A new filter will be used at each sample location. In general, seep and spring sampling locations will have been established prior to the sampling event. Samples should be taken from a location close to the observed emergence point. Groundwater will be drawn into a syringe from a depth approximately 1 to 2 inches below the surface of the pool associated with the seep /spring and injected into the sample containers. Alternately, the sample may be collected by any of the three collection techniques described below for surface water samples. Where necessary, a sample may be collected by use of a PVC collector pipe inserted into the seep /spring location to facilitate filling a sample container or collection vessel. The sampler must take extra care to ensure that foreign materials do not enter the collection vessel. Dissolved metals samples will be filtered using a 0.45 micron disposable filter. The water sample will be pumped through the filter using a vacuum pump. An aliquot of approximately 100 ml will be run through the filter prior to collection into the sample containers, unless using sterile filters. A new filter will be used at each sample location. Surface Water Sample Collection A moving water sample will be collected from the portion of water with flow. If the sampling point is inaccessible from shore, the sampling personal will enter the water from a point downstream of the sample location, taking care not to disturb the water. The surface water sample will be collected according to one of the following, or similar, techniques. 1. Direct Method — Sample bottle or collection vessel is inverted, submerged to the specified depth, turned upright, removed from the water, and then capped. Add preservative, if any, after sample collection. 2. Dipper Method — Sample dipper (attached to a pole or rope) is dipped in the water to collect the water sample and then used to fill the sample bottle or collection vessel. PRINTED DOCUMENTS ARE UNCONTROLLED