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Groundwater and bedrock information is for 148 wells in Sections 9, 1.0, 15 and 16 in T32 R25 of Anoka County,
<br />['rom the County Well Index (CWI). The first bedrock encountered is the St. Lawrence - Franconia formation.
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<br />There are no known sinkholes, shallow limestone formations or karst conditions at the site.
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<br />b. Describe the soils on the site, giving NRCS (SCS) classifications, if known. Discuss
<br /> soil granularity and potential for groundwater contamination from wastes or chemicals
<br /> spread or spilled onto the soils. Discuss any mitigation measures to prevent such
<br /> contamination.
<br /> According to the Soil Survey of Anoka County, soils on the alignment are NrD (Nymore loamy coarse sand, 12 to
<br /> 25 percent slopes); NyA, NyB, NyC (Nymore loamy sand, 0 to 2 percent slopes, 2 to 6 percent slopes, 6 to 12
<br /> percent slopes, respectively); Ma (Markey muck); ZmA, ZmB, ZmC, ZmD (Zimmerman fine sand, 0 to 2 percent
<br /> slopes, 2 to 6 percent slopes, 6 to 12 percent slopes, 12 to 24 percent slopes, respectively); HuA, HuB, HuC
<br /> (Hubbard coarse sand, 0 to 2 percent slopes, 2 to 6 percent slopes, 6 to 12 percent slopes, respectively); [s (Isan
<br /> sandy loam); lw (Isanti find sandy loam); Mc (Histosols); Me (Meehan sand); Rf(Rifle mucky peat); AnA, AnC
<br /> (Anoka loamy tine sand, 0 to 2 percent Slopes, 6 to !2 percent slopes, respectively); LnA (Lino loamy fine sand, 0
<br /> to 4 percent slopes); DiA; Bm (Blomford loamy fin~'sand); Bx (Brickton silt loam); DnB (Dickman sandy loam, 2
<br /> to 6 percent slopes); Kr (Kratka loamy fine sand); and DIA (Dalbo silt loam, I to 5 percent slopes). The
<br /> distribution or'these soil types is shown in Figure 4.
<br /> Type A soils (sand, loamy sand, or sandy loam) have low mnoffpotential and high infiltration rates even when
<br /> thoroughly wetted. They consist chiefly of deep, well to excessively drained sands or gravels and have a high rate
<br /> of water transmission (greater than 0.3 in/hr).
<br /> Type B soils (silt loam or loam) have moderate infiltration rates when thoroughly wetted and consist chiefly of
<br /> moderately deep to deep, moderately well to well drained soils with moderately fine to moderately coarse textures.
<br /> These soils have a moderate rate of water transmission (0.15 to 0.30 in/hr).
<br /> Type D soils (clay loam, silty clay loam, sandy'clay, silty clay, or clay) have high rtmoffpotential. They have very
<br /> low infiltration rates when thoroughly wetted and consist chiefly of clay soils with a high swelling potential, soils
<br /> with a pe]~nanent high water table, soils with a ctaypan or clay layer at or near the surface, and shallow soils over
<br /> nearly impervious material. These soils have a verylow rate of water transmission (0 to 0.05 in/hr). The majority
<br /> of the alignment is in this soil type. Care will be taken to prevent spills.
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<br />?~0;.': $oh d; ~astes,:; Haza rdous~:~s{~ ~i ~ ~
<br /> a. Describe types, amounts and compositions of solid or hazardous wastes, including
<br /> solid animal manure, sludge and ash, produced during construction and operation.
<br /> Identify method and location of disposal. For projects generating municipal solid
<br /> waste, indicate if there is a source separation plan; describe how the project will be
<br /> modified for recycling. If hazardous waste is generated, indicate if there is a
<br /> hazardous waste minimization plan and routine hazardous waste reduction
<br /> assessments.
<br /> Not applicable.
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<br /> b. Identify any toxic or hazardous materials to be used or present at the site and identify
<br /> measures to be used to prevent them from contaminating groundwater. If the use of
<br /> toxic or hazardous materials will lead to a-regulated waste, discharge or emission,
<br /> discuss any alternatives considered to minimize or e.!i.minate the was. te, discharge or
<br /> emission .....
<br /> No previous environmental'hazhrds have been found on ~ite. 'During constru'ction, equipment and vehicles
<br /> utiliti×ing gasoline, diesel fuel, antifreeze, a~d oil will be used at the project site. Toxic or hazardous materials such
<br /> as fuel ['or construction equipment and materials used in the constrtiction of homes (paint, adhesives, stains,
<br /> contaminated rags, acids, bases, herbicides, and pesticides) will likely be used during site preparation and house
<br /> construction. Spills ot"these materials are not planned, but could require notification of the Minnesota Duty
<br /> Otticcrs if a sigmificant spill occurs. Builders/contractors are responsible for proper management and disposal of
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