Laserfiche WebLink
Environmental Assessment Worksheet <br />Nature's Refuge Conservation Development <br />Lino Lakes, Anoka County, Minnesota <br />Draft Document — September 25, 2006 <br />Page 15 <br />18. Water quality: wastewaters <br />a. Describe sources, composition and quantities of all sanitary, municipal and industrial wastewater produced or <br />treated at the site. <br />The wastewater generated will be domestic strength sewage from the homes on the site. Assuming usage of 275 <br />gallons per residential unit per day, the project will ultimately generate 76,450 gallons of wastewater per day. <br />b. Describe waste treatment methods or pollution prevention efforts and give estimates of composition after <br />treatment. Identify receiving waters, including major downstream water bodies, and estimate the discharge <br />impact on the quality of receiving waters. If the project involves on -site sewage systems, discuss the suitability <br />of site conditions for such systems. <br />The project will be served by municipal sewer mains installed along the centerline of the proposed streets. These <br />mains will connect to a lift station, and sewage will be routed through existing infrastructure to be treated by the <br />Metropolitan Council treatment plant. <br />No individual sewage treatment systems (ISTS) would be approved by the City of Lino Lakes for the project. No <br />on -site pre - treatment measures are proposed. <br />c. If wastes will be discharged into a publicly owned treatment facility, identify the facility, describe any <br />pretreatment provisions and discuss the facility's ability to handle the volume and composition of wastes, <br />identifying any improvements necessary. <br />The sewage from the site will be treated at the MCES Metro wastewater treatment facility located in St. Paul. There <br />are no facility improvements needed to treat wastewater generated by the project. <br />d. If the project requires disposal of liquid animal manure, describe disposal technique and location and discuss <br />capacity to handle the volume and composition of manure. Identify any improvements necessary. Describe any <br />required setbacks for land disposal systems. <br />This project does not involve liquid animal manure. <br />19. Geologic hazards and soil conditions <br />a. Approximate depth (in feet) to ground water: 0 minimum 8 average <br />to bedrock: 100 minimum 125 average <br />b. Describe any of the following geologic site hazards to ground water and also identify them on the site map: <br />sinkholes, shallow limestone formations or karst conditions. Describe measures to avoid or minimize <br />environmental problems due to any of these hazards. <br />There are no known hazards related to these geologic conditions. <br />c. Describe the soils on the site, giving NRCS (SCS) classifications, if known. Discuss soil granularity and <br />potential for groundwater contamination from wastes or chemicals spread or spilled onto the soils. Discuss any <br />mitigation measures to prevent such contamination. <br />The Soil Survey of Anoka County identifies ten soil map units in the project site. The distribution of soil map units <br />is fairly even throughout the site, with no particular units being predominant. The soils on the site are generally <br />sandy loams with peat in the lowest wetland areas. The following is a summary of the soils identified in the Soil <br />Survey: <br />