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sample event. Samples were, therefore, analyzed only for specific fungicides applied <br />during the 1994 season. <br />FERTILIZER AND PESTICIDE APPLICATION <br />Fertilizers and pesticides were applied to golf course turf areas according to normal <br />application rates and schedules. The golf course managers were unaware of which <br />runoff events were monitored until after the operating season. The specific dates of <br />fertilizer and pesticide applications were not known by Hennepin Parks staff until after <br />the study was completed. However, the golf course managers did indicate the types <br />of fungicides they applied. <br />RAINFALL <br />Gauges were installed at four sites to measure rainfall occurring during the study. <br />Tipping bucket gauges were installed at the Woodhill Country Club pump building and <br />approximately one half mile southwest of Baker National Golf Course, at a gatehouse <br />site. Total volume gauges were installed at the sample site at the Meadowbrook <br />course and one quarter mile southwest of the Baker National Golf Course site. In <br />addition, data from an existing tipping bucket gauge maintained by the Minneapolis <br />Park Board at the Minikahda Club was obtained for the study. Rainfall data at the <br />Minikahda, Meadowbrook and Baker Gatehouse sites were not available until May of <br />1994. Only the Baker Park total rainfall gauge was operational in April. Therefore, it <br />was necessary to use the April data from this site for the other courses. <br />POLLUTANT EXPORT <br />Export of pollutants from each course was calculated as the product of the total runoff <br />for a given rainfall event and the flow weighted mean concentration of a pollutant for <br />that event. Total export from base flow during the season was calculated as the <br />product of daily flow and the median concentration of base flow events. For non- <br />monitored rainfall events, export was calculated as the product of the total flow and a <br />concentration calculated by a regression equation between concentration and total <br />flow. Total export from non-sampled events was also calculated as the product of the <br />total flow and the mean and median of the site flow weighted concentrations.