ORDINANCE NO.  15
    An ordinance regulating the installation, construction, extension, and repair of individual water supply systems in the Town of Grant;  requiring permits for, providing for, inspection, and prescribing penalties for non-compliance.
    The Town Board of Supervisors of the Town of Grant, Washington County, Minnesota, does ordain:
        Section 1:
              A.    Before proceeding with the construction of a new well or any major reconstruction  (deepening of existing well to the next deeper strate)  the owner or his agent shall first obtain a permit for
such purposes from the Town Clerk and shall pay a fee of five ($5.00) dollars.
              B.    Applications for permits shall be made in writing upon printed forms furnished by the
 Town Clerk for such purposes.
              C.    Each water supply system shall be so located and constructed that it will not be contaminated by any existing or future sewage disposal system.  It shall also be constructed to minimize the possible contamination of the well from all possible external sources within the geological strata surrounding the well.
              D.    Wells shall be located in a manner to be free from flooding and the top shall be so constructed and located as to be above all possible sources of pollution.  No well shall e located closer than three (3) feet to the outside basement wall of a dwelling.  The outside basement footing shall be continuous across the opening of the well alcove.  No well shall be located closer than fifteen (15) feet to a property line.  The following minimum distances between a well and possible sources of contamination shall be complied with:
                        (1)    Buried or concealed extra heavy cast iron sewer or drain lines with lead caulked, air
                                tested joints - 20 feet.
                        (2)    Vitrified clay or concrete sewers (or cast iron sewers not of construction described
                                 above), septic tanks, or drain fields-50 feet.
                        (3)    Dry wells, seepage pits, cesspools-75 feet.
              E.    No well shall hereafter be installed in a pit below the surface of the ground unless such well pit is an alcove opening directly into the main basement area of the building being served by the well.  The well pit floor shall be constructed according to the requirements for pump room floors outlined in this ordinance.
              F.    No well constructed in the Town of Grant shall terminate in the Decorah Shale, Platteville Limestone or Shakopee-Oneota Dolomite.  No existing well shall be increased in depth to terminate in those formations.
              G.    The Minimum Diameter of any finished well casing shall be four (4) inches.  Well casings shall be constructed of welded or coupled steel or wrought iron and shall conform to the following specifications for weight and thickness.

        Diameter                        Wall Thickness                 Weight per lin. ft. with threads and
                                                                                                             Couplings
        4"                                    .237 inches                                                10.98
        5"                                    .258 inches                                                14.80
        6"                                    .280 inches                                                19.45
        8"                                    .322 inches                                                29.35
        10"                                  .365 inches                                                41.85
        12"                                  .375 inches                                                51.15

The casing of any well constructed entirely in unconsolidated earth formations shall extend to a depth of 150 feet below the established ground level or through the first impervious soil formation encountered, whichever is deeper, and at least 5 feet below pumping level  (level below ground level to which the water surface is lowered in the well during pumping.)  Where a water bearing formation is encountered during well construction at a depth which satisfies these minimum requirements, the acceptability of the formation for well development shall be based on the satisfactory results of analysis of the water by a competent laboratory.  Any water bearing formation yielding water which is contaminated as evidenced by the presence of chemicals or bacteria of sewage original, shall be regarded as unsatisfactory for well development.
               H.    All wells for domestic use, hereafter constructed in the Town of Grant shall produce a minimum initial supply of 900 gallons of sand-free water per hour.
              I.    The pump and equipment shall be installed in a manner satisfactory to the Town of Grant and shall conform to the following:
                        (1)    Pump and equipment shall be designed to assure a pollution-proof installation.
                        (2)    The pump base shall be constructed so as to permit installation of  a  water-tight
                                mounting.
                        (3)    A well seal shall be used.  Such well seal shall be of simple construction, easily
                                installed, removed and reinstalled should it become necessary to remove the drop
                                pipe for repair.
                        (4)    The top of well casing shall be a minimum of 18 inches above the basement floor
                           (5)    Suction lines installed through well casing, or where otherwise installed less than
                                10 feet below grade, shall be provided with an outline protective casing.  Such
                                protective casing shall be set watertight into the well casing.  The suction line shall
                                be caulked into the protective casing to provide a watertight joint which will permit
                                easy removal.  The suction line shall slope upward toward the pump.  Where a
                                suction line is brought into a basement from a well located some distance from the
                                basement, the pump shall be located at least 18 inches above the basement floor.
                        (6)    Provisions shall be made in the well seal for future measurements of static and
                                pump levels.
              J.    After final installation of the pumping equipment, the well shall be pumped continuously until the water is free of turbidity, then chlorinated heavily in accordance with the following procedure:
                        (1)    Introduce into the well one pound of high test (70% or equivalent) calcium hyper-
                                chlorite  (chlorinated lime) by scattering same over the surface of the water in the
                                well so that the powder will sink to the bottom thereby permeating the supply.
                        (2)    If powder cannot be introduced directly, then mix one pound of calcium hyper-
                                chlorite, high text (70% or equivalent), with five gallons of water and pour the
                                mixture into the well.
                        (3)    Allow the chemical to remain in the well for at least twelve hours, then pump to
                                waste until the odor and taste of the chemical have practically disappeared.
                        (4)    Where calcium hyperchlorite tablets meeting the above requirements are used, they
                                shall remain in the well for a minimum period of 48 hours before water is pumped
                                to waste as described above.
                        (5)    Wells larger than four inches in diameter require proportionally larger doses of the
                                 chemical for chlorination but shall not have a concentration of applied solution less
                                 than 150 parts per million for twelve hours.
                K.    All commercial wells shall comply with the requirements of the Minnesota State
Department of Health for public water supplies.
                L.    Upon completion of drilling a well, a pumping test of sufficient duration to determine the
yield and maximum drawdown shall be conducted.  Within fifteen days after inspection of the well, the permit holder shall file an affidavit with the Town Clerk setting forth the results of the pumping test, the capacity of the well, the pumping level, the depth of casing from grade, and length and size of screen if one is used.  A geological log of the formations encountered in drilling each well shall be kept by the driller.  A copy of said log, typed in 8 1/2 x 11"  paper, shall be filed along with the well affidavit and such log shall specifically state where impervious formation is encountered.  Failure to provide such a log or affidavit, or willful failure to provide accurate information with respect thereto shall constitute a violation of this ordinance.
                M.    The construction of a well for the purpose of disposing of any liquids, including surface waters, air-conditioning, or commercial wastes, shall be prohibited in the Town of Grant.
                N.    The following terms used in this ordinance are clarified as follows:
                        (1)    Drawdown - the change in surface elevation of a body of water such as the result
                                of the withdrawal of water therefrom.
                        (2)    Glacial Drift - An assemblage of deposits left by the melting of an ice sheet or glacier.
                                It is composed of an accumulation of unstratified material of all sizes which formed at
                                the margin of the ice.
                        (3)    Grout - A thin mortar consisting of portland cement and water or portland cement,
                                sand and water in the following proportions:
                                (a)    one sack cement to 4 1/2 to 5 1/2 gallons of water.
                                (b)    one part cement, one part clean sand and 4 1/2 to 6 gallons water.  The sand
                                        grout shall be used only where abnormal loss of grout to crevices or faults
                                        occurs.
                        (4)    Log - A chronological record of the soil and rock formations encountered in the
                                operation of drilling a well, with either their thickness, or the elevation of the top
                                and the bottom of each formation given.  It also includes statements as to the comp-
                                position and water-bearing characteristics of each formation.
                        (5)    Porosity - An index of the void characteristics of a soil as it pertains to percolation.
                        (6)    Turbidity - A condition of a liquid to to fine visible material in suspension, which may
                                not be of sufficient size to be seen as individual particles by the naked eye but which
                                prevents the passage of light through the liquid.
                        (7)    Yield - The quantity of water flow  (gallons per minute or per hour) which can be
                                collected pumped)  from the well.
        Section 2:
                This ordinance shall only apply to the construction of a new well or any major reconstruction for which the owner or his agent must first obtain a permit under Section 1, subdivision A herein.

        Section 3:
                This ordinance and each of the separate provisions thereof have been enacted for the benefit and protection of property owners as well as the public.  Each and ever contract for the performance of work of a type regulated by this ordinance shall be implication include a covenant on the part of the one who is to perform the work that, except to the extent that compliance with this ordinance has been modified or waived, the work shall be performed strictly in accordance with the applicable provisions of this ordinance.

        Section 4:    Penalties
                Any person, firm or corporation violating any of the provisions of this ordinance shall be guilty of a misdemeanor, and upon conviction thereof shall be fined in an amount not to exceed $100.00 or imprisoned for not to exceed 90 days.  Each day that any violation is continued shall constitute a separate offense.

                Passed by the Town Board of Supervisors of the Town of Grant, this 14th day of May, 1968.

                                                                    /a/  Harry F. Crowe
                                                                    Chairman

Attest:
/a/ Arthur B. Schaefer, Jr.
Clerk

(seal)                      level and the seal shall be so constructed and installed as to maintain its water-tight
                                feature, should flooding occur.  The pump room floor shall be at least 6 inches
                                above the surrounding grade and the concrete platform shall be minimum 4 inches
                                above grade at the edge.