Agenda - Council - 06/14/2005 - Laserfiche WebLink

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a. Describe sources, composition and quantities of all sanitary, municipal and industrial wastewater produced or treated at the site. Extension of the sewer main is required for this project. Sanitary sewer will be installed with the internal streets to provide service to thc development. The source ofwastewater from this project will be 253 single family homes. The composition of the waste is typical residential wastewater. An estimate of the amount of wastewater produced is based on a volume of 100 gallons per capita per day, 253 single family homes, and an average of 2.75 people per home, which results in a volume of 69,575 gallons per day. No industrial wastewater will be produced at the site. b. Describe waste treatment methods or pollution prevention efforts and give estimates of composition after treatment. Identify receiving waters, including major downstream water bodies, and estimate the discharge impact on the quality of receiving waters. If the project involves on-site sewage systems, discuss the suitability of site conditions for such systems. No wastewater treatment will be done on site. Currently, the City of Ramsey's sanitary wastewater is collected in interceptor sewers and treated by the Met Council's existing treatment facility in St. Paul, Sanitary wastewate~r fi.om this project will also be treated by the Met Council's existing Metro municipal sewage treatment facility. The'plant treats the wastewater to MPCA standards and discharges the treated effluent to the Mississippi River. c. If wastes will be discharged into a publicly owned treatment facility, identify the facility, describe any pretreatment provisions and discuss the facility's ability to handle the volume and composition of wastes, identifying any improvements necessary. Wastcwater from this project will go to the existing Met Council IVletro treatment plant in St. Paul. The existing plant has adequate capacity to service the project, therefore no improvements will be necessary. d. If the project requires disposal of liquid animal manure, describe disposal technique and location and discuss capacity to handle the volume and composition of manure. Identify any improvements necessary. Describe any required setbacks for land disposal systems. No animal wastes, except domestic pet waste, will be produced on site. a. Describe any of the following geologic site hazards to ground water and als° identify them on the site map: sinkholes, shallow limestone formations or karst conditions. Describe measures to avoid or minimize environmental problems due to any of these hazards. Minim um depth (in feet) Average depth Groundwater 3 ft Groundwater 12.9 ft Bedrock 110 ft Bedrock 125 ft Groundwater information is for 9 of the 13 borings done by Braun Intertec. Most of the borings caved in after drilling, so depth to water is from the "while drilling" estimates. Groundwater was not encountered in 4 of the borings. There are no wells on the site, according to the County Well Index. Bedrock information is from the County Well Index tbr three wells nearby to the south of the site. The first bedrock encountered is the Franconia fo~wnation. There are no known siiqkholes, shallow limestone formatio~i~g or karst conditions at the site. b. Describe the soils on the site, giving NRC'S (SCS) classifications, if known. Discuss soil granularity and potential for groundwater contamination from wastes or chemicals spread or spilled onto the soils. Discu'.ss any mitigation measures to prevent such contamination.