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' groundwater conditions in the vicinity of the site. Dewatering operations by Lafarge will not directly affect any of the water quality conditions outlined above. The only direct impact expected from dewatering is a drop in groundwater levels in the vicinity of the operation. ' However, the groundwater level is only of interest relative to these specific end uses. This creates some difficulty because a direct cause-effect relationship cannot be determined between two such events, such as a drop in groundwater level and loss of 1 pasture yield, for instance. Lafarge cannot be responsible for insuring the grass will grow, only that if the grass doesn't grow and it can be shown that this event coincided with a measured drop in groundwater level, that this will trigger mitigation by Lafarge. Thus there is a need for both quantitative and qualitative methods. It is an attempt to more causally link dewatering activities to the real issues of concern, such as irrigation and pond levels. Likewise, a change in groundwater levels maybe found to be significant in a statistical sense but have no appreciable effect on any end-use indicators, such as pumping rates or pasture yield. In this case, Lafarge should not be required to mitigate, in fact, there is no need for mitigation. No harm has been caused. This combination approach provides a measure of protection both to Lafarge and its neighbors, as well as pushing all parties to be active participants in managing the water quality of the neighborhood. ' The final element of this process is to determine what mitigation is appropriate if a "violation" is found to have occurred. Obviously this must be done on a case-by-case ' basis. If it is found that a violation has occurred at even one well, then mitigation should begin, but only insofar as it concerns damages at that location or its immediate vicinity. ' This "zone" of influence" can be determined using a method similar the Thiessen polygon method for precipitation gauges. This "zone of influence" for each well is shown on the well location map. There are two ways to measure success for mitigation efforts. Either groundwater levels must be brought back to within tolerance limits, or end use concerns must be addressed. If this is the approach taken, it may require some creativity to find economical solutions that are agreeable to all parties. i It is beyond the scope of this protocol to determine measures likely to result in successful mitigation. However, it is hoped that Lafarge, neighbors and regulators will come to ' some agreement about possible methods to be used as well as any further specifics about when mitigation will occur and in what manner. It is important to recognize that implementation of this protocol requires responsive actions on the part of Lafarge particularly, should a "violation" be determined. These actions should be quantified and ' agreed to by all parties prior to measurements being taken, to ensure the success of the protocol.