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Environmental Summary August 16, 2013

Fri, Sep 6th, 2013
Posted in All Legals

Environmental Summary

August 16, 2013

I. Project Name: Lanesboro Well #4, Water Treatment Facility, Looping of Water Mains, Water Main Replacement and Pressure Reducing Valve Modifications Project Number 1230006-1

Legal Description: Section 13 and 24, Township 103 N, Range l0W and Section 19, Township

103 N, Range 9 W.

Fillmore County, in the City of Lanesboro

Project Proposer: City of Lanesboro

202 Parkway Avenue South

P.O. Box 333

Lanesboro, Minnesota 55949-0333

II. Present Water System and Need

A) Present Water System:

The current water system serving Lanesboro consists of 3 wells, two elevated steel water towers, and distribution. Wells Nos. 1, 2 and 3 were developed in 1946, 1958 and 1982, respectively.

B) Need:

The Lanesboro system is in violation of the National Primary Drinking Water Regulations. The water supply exceeds the 5.4 picoCuries per Liter Maximum Contaminant Level (MCL) for Combined Radium 226 and Radium 228. All three wells have shown Combined Radium concentrations exceeding the MCL. Wells Nos. 1 and 2 are out of compliance with the Minnesota Water Well Construction Code. Pressure Reducing Valves are inadequate and water main looping is necessary.

C) Solution to the problem:

In order to provide water in enough quantity that meets the SDWA Maximum Contaminant Levels for Combined Radium 226 and Radium 228, a new Well No. 4 will be drilled and pumphouse constructed. A new water treatment plant will be constructed. Connections will be made so the treatment plant treats water from both Wells Nos. 3 and 4. Watermain and Pressure Reducing Valve improvements will be implemented to optimize the distribution system to work with the new water treatment plant.

III. Environmental Impact

The environmental impact is short-term construction related disturbance limited to noise and dust. The short-term impact will be mitigated by the use of standard construction practices. Erosion and sedimentation control measures recommended by the Soil Conservation Service and the Department of Natural Resources will be followed. The proposed project is expected to result in no direct impact to: threatened or endangered plants or animal species or their habitats; wetlands; flood plains; nearby farmland; historic, architectural, cultural, or archaeological features; shorelands; or air quality nonattainment areas.

IV. Public Participation Programs

The Minnesota Department of Health’s Drinking Water Revolving Fund environmental review process was followed. A summary of the project and request for public comments was published in the Fillmore County Journal. The required public comment period concluded on August 7, 2013

/s/ Paul A. Halvorson, P.E.

Public Health Engineer

Section of Drinking Water Protection

Publish 9

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