Laserfiche WebLink
• Based on P8 modeling, undeveloped property within the City of Hugo <br />currently generates .12, .18, .31, and .43 pounds of total phosphorus per <br />year per acre of land having A, B, C, and D soils respectively. <br />• P8 modeling predicts undeveloped property within the City of Hugo <br />generates .11, .17, .30, and .41 acre feet of runoff volume per year per acre <br />of undeveloped land A, B, C, and D soils respectively. <br />• Based on analysis by Houston Engineering as well as by WSB & <br />Associates, infiltration of the first inch of runoff from impervious surfaces <br />will reduce annual runoff volumes and the corresponding pollutant load by <br />approximately 80%. <br />• Based on an evaluation of the regional impacts of development, if the <br />runoff volume generate by impervious surfaces is estimated at <br />approximately 18 inches per year and this amount is increased by 25% to <br />24 inches per year, on an annual basis the increase in runoff volume <br />created by impervious and pervious surface could be fully mitigated. <br />• On average, for areas in the City of Hugo, the P8 modeling indicates that <br />if 2 acre feet of untreated runoff are infiltrated, two pounds of phosphorus <br />load will be removed. <br />• On average, for each acre of impervious surface within a development, <br />will generate 2 acre feet of additional runoff volume. <br />CIP for Storm Water Projects Within the City of Hugo <br />City of Hugo, MN <br />WSB Project No. 1687-85 <br />Page 18 <br />