§ 50.016 ABANDONED WELLS.
   (A)   Definitions.    For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
      (1)   DEPARTMENT. The Lake County Health Department.
      (2)   PRIVATE WATER SYSTEM. Any supply which provides water for drinking, culinary and sanitary purposes and serves an owner-occupied single-family dwelling.
      (3)   PUBLIC WATER SYSTEM. A system for the provision to the public of piped water for human consumption of the system has at least 15 service connections or regularly serves an average of at least 25 individuals daily at least 60 days per year. The term PUBLIC WATER SYSTEM includes any collection, treatment, storage or distribution facilities under control of the operator of such system and any collection or pretreatment storage facilities not under such control which are used primarily in connection with such system.
   (B)   Abandonment of wells.
      (1)   The owner of a water well, boring or monitoring well shall assure that such well is sealed within 30 days after it is abandoned and no longer used for the purpose for which it was intended. The Department shall grant an extension of this time provided the owner submits a written request to the Department indicating the reasons for the request and an estimate of time in which the well will be sealed. In granting an extension, the Department must be assured that applicable protective measures will be taken and the methods and materials will be in compliance with the Act and this section. Applicable protective measures may include ensuring sources of contamination are down grade from the water source or isolation of the potential source of contamination in such a manner as to prevent a route of contamination of the ground water, or isolating the potential source of contamination to prevent accidental introduction of contaminants into ground water.
      (2)   After a property is connected to a public water system, all existing private water systems shall be properly sealed in accordance with the Illinois Water Well Construction Code.
      (3)   Wells shall be sealed by a licensed water well driller.
   (C)   Sealing requirements. Water wells, borings or monitoring wells which are abandoned shall be sealed by placing the sealing materials from the bottom of the well to the surface by methods that will avoid segregation or dilution of material in accordance with the following requirements:
      (1)   Noncreviced, consolidated formations. Wells extending into noncreviced sandstone, or other water-bearing consolidated formations shall be sealed by filling the well with disinfected clean sand free of mud or dirt, or pea gravel to the top of the water bearing formation or to within ten feet of the casing, whichever is less. Disinfection shall be accomplished by treating the area of the well which penetrates the aquifer. Neat cement containing betonite, aquajel or similar materials from 2% to 6% by weight or pure bentonite in any form shall be placed for a minimum of ten feet above this point or to the top of the water-bearing formation, whichever is greater. A clay slurry or impervious material shall be used to fill the upper part of the well to the surface.
      (2)   Creviced formations. Wells extended into creviced formations shall be sealed by filling with disinfected clean pea gravel to the top of the water-bearing formation or to within ten feet of the casing whichever is less. Neat cement containing bentonite, aquajel or similar materials from 2% to 6% by weight, or pure bentonite in any form shall be placed for a minimum of ten feet above this point or to the top of the aquafier, whichever is greater. A clay slurry or impervious material shall be used to fill the upper part of the well to the surface.
      (3)   Unconsolidated formations. In the event the water-bearing formation consists of coarse gravel and producing wells are located nearby, the well shall be sealed by filling with disinfected clean pea gravel to the top of the water-bearing formation. Neat cement containing bentonite, aquajel or similar materials from 2% to 6% by weight, or pure bentonite in any form shall be placed for a minimum of ten feet above this point. Clay or impervious material shall be used to fill the remaining upper part of the well to the surface. Abandoned wells extending only into unconsolidated formations near the surface can be sealed by completely filling with concrete, cement grout, neat cement or clay.
      (4)   More than one water-bearing formation. Where wells extend into more than one water- bearing formation, each water-bearing formation shall be sealed independently in the manner described in this section depending upon the type of formation encountered. A neat cement plug shall be placed a minimum of ten feet above and below all intermittent water-bearing formations. Disinfected clean pea gravel shall be placed in each water-bearing formation between plugs. A clay slurry or other impervious materials shall be used to fill all other parts of the well between plugs and the upper part of the well to the surface.
      (5)   Artesian wells. In such wells, a cement retainer shall be used with pressure grouting equipment utilized to place cement grout. Neat cement shall be placed for a minimum of ten feet above the water-bearing formation. A clay slurry or other impervious materials shall be used to fill the upper part of the well to the surface.
      (6)   Where the well casing consists of brick, stone, concrete blocks, porous tile or other porous material, the casing shall be removed to a depth of at least ten feet below the surface.
   (D)   Nonproducing well. Where a water well is drilled and a water-bearing formation is not located, the water well shall be filled with clay, drill cuttings or neat cement containing bentonite, aquajel or similar materials from 2% to 6% by weight, or pure bentonite in any form by the water well driller not more than ten calendar days after the well has been drilled.
   (E)   The well casing shall be removed to at least three feet below the final grade.
   (F)   Notification. In addition to the notification requirements outlined in the Illinois Water Well Construction Code, the village shall be notified by telephone or in writing at least 48 hours prior to the commencement of any work to seal a potable water or monitoring well.
      (1)   Location of well.
      (2)   Type of sealing method used.
      (3)   Date the well was sealed.
      (4)   Type of well (boring, dug or drilled).
      (5)   Whether the formation is clear of obstructions.
      (6)   Casing record (explanation of the required removal).
      (7)   Water well drillers license number and name.
      (8)   Written report on file with the village.
(Ord. 1993-O-01, passed 3-16-93) Penalty, see § 50.999