Because the coefficients of the mud agitator inside the oil wells are statistically insignificant in all models, this suggests a potential marginal effect of the quantity of oil drilling products that are treated and released upstream on concentrations and what is mud agitator. The impact of mud agitator on oil drilling concentrations may vary across treatment facilities and we may roughly divide those kinds of facilities into some types by the voluntary request to suspend centrifugal pump shipments and those that are not affected by the new oil drilling policies. Results of mud agitator research have suggested that the observed increase in mud agitator downstream concentrations is due more to the facilities that have received regulatory attention than to those that have not in some cases of what is mud agitator.
At the same time, it has been found out that the mud agitator coefficient on the affected facilities is positive and statistically significant since some affected mud agitator facilities are highly effective during the oil drilling period. This remains to be true although some mud agitator operators may voluntarily stop sending waste to these facilities according to a simple model regressing observed concentrations on the precipitation. The study concerning mud agitator finds that precipitation in the watershed increases concentrations as well as the magnitude as we alter mud agitator model specification in another direction. We also test for the relative impact of mud agitator well pad preparation as well as the activities that are specific to individual mud agitator wells. The data do not indicate which oil wells are on the same pad in spite of the fact that we assume that wells within three acres share a pad and mud agitator. The average number of oil wells using this method has to install at least two mud agitators before we create a variable to describe what is decanter centrifuge and the density of oil well upstream in a monitor’s watershed. If mud agitator preparation is a more significant driver of impacts than individual wells, the magnitude of the pad estimate should be less than the impact of an individual oil well, which should be well understood by mud agitator users. The effects of mud agitator can be multiplied by the average number of oil wells on a pad and the variable is positive or even about twice the magnitude of the mud agitator variable for individual wells. Although we may have introduced some attenuation on mud agitator in constructing the well variable, the result is consistent with the hypothesis that the net impacts of mud agitator wells may be due to preparation than to activities associated with individual wells.