Laserfiche WebLink
<br />project area will be designed with water quality features to meet the requirements <br />listed above. This results in a significant improvement in the water quality of the <br />runoff discharged from the site. Runoffvolumes, total phosphorus and total <br />suspended sediments will all be less than existing, even with the increase in <br />impervious surface. <br />2. The drainage area to Centerville Lake will decrease from existing conditions. <br />3. The project area draining to Centerville Lake is considerably smaller than the <br />entire drainage area to Centerville Lake. <br /> <br />b. Identify routes and receiving water bodies for runofffrom the site; include major <br />downstream water bodies as well as the immediate receiving waters. Estimate <br />impact runoff on the quality of receiving waters. <br /> <br />Runoff from the site, after treatment in the several infiltration basins and other <br />stormwater best management practices, is routed via storm sewer to either Centerville <br />Lake or Clearwater Creek. The majority of the site is tributary to Clearwater Creek <br />which travels roughly 4,400 feet before discharging downstream to Peltier Lake. With <br />the stormwater management strategies to be implemented for the project, it is not <br />expected to impact the quality of receiving waters. <br /> <br />I8.Water quality: wastewaters <br /> <br />a. Describe sources, composition and quantities of all sanitary, municipal and <br />industrial wastewater produced or treated at the site. <br /> <br />Sanitary sewer wastewater will be produced from a few sources. The first would be <br />municipal wastewater from the townhomes and condos. This waste will be typical of any <br />residential development. The second would be municipal wastewater from retail and <br />office space as proposed on the first floor of some of the downtown buildings. Again, <br />this wastewater will be typical of any office building. The third source would be from <br />any restaurant that may occupy some of the available retail space. Their wastewater may <br />be higher in organic composition including fats and oils. Estimated quantities are listed <br />below: <br /> <br />Residential 65,000 gallons per day (gpd) (average) <br />Office/Retail 11,000 gpd (average) <br />Restaurants 44,000 gpd (average) <br />Total = 120,000 gpd (average) <br /> <br />b. Describe waste treatment methods or pollution prevention efforts and give <br />estimates of composition after treatment. Identify receiving waters, including major <br />downstream water bodies, and estimate the discharge impact on the quality of <br />receiving waters. If the project involves on-site sewage systems, discuss the <br />suitability of site conditions for such systems. <br /> <br />14 <br />