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SOLID WASTE PROCESSING AND DISPOSAL

CHAPTER 1200-01-07

Rule 1200-01-07-.04, continued)

  • (iii)

    An alternative boundary as may be established by the Commissioner in the permit. An alternative compliance boundary shall not exceed 150 meters from the waste management unit boundary and shall be located on land owned by the owner of the SWLF unit. The Commissioner may establish an alternative boundary only if he finds that the change to such a boundary would not result in contamination of ground water, which such selection may be in consideration of all of the following factors that are relevant:

    • (I)

      The hydrogeological characteristics of the facility and surrounding land, including any natural attenuation and dilution characteristics of the aquifer;

(II)

The volume and physical and chemical characteristics of the leachate;

(III)

The quantity, quality, and direction of flow of ground water underlying the facility;

  • (IV)

    The proximity and withdrawal rates of ground water users;

  • (V)

    The availability of alternative drinking water supplies;

  • (VI)

    The existing quality of the ground water, including other sources of

contamination and their cumulative impacts on the ground water; and whether the ground water is currently used or reasonably expected to be used for drinking water; and

    • (VII)

      Public health, safety, and welfare effects.

  • 3.

    Monitoring System for New and Existing Facilities

    • (i)

      The facility must have a ground water monitoring system consisting of a

sufficient number of wells and/or springs, with not less than 1 upgradient and 2 downgradient monitoring points, unless other monitoring points and locations are otherwise approved by the Commissioner, with installations at appropriate locations and depths, to yield ground water samples from the uppermost aquifer that:

  • (I)

    Represent the quality of background ground water that has not been affected by leakage from the facility; and

  • (II)

    Represent the quality of ground water passing the compliance boundary hydraulically downgradient (i.e., static head) from the waste disposal area.

(ii)

All monitoring wells must be cased in a manner that maintains the integrity

of the monitoring screened interval, as necessary, to

well

bore

hole.

This

casing

must

be

fitted

with inert gravel or sand and packed around the

enable

collection

of

ground

water

samples

at

with a screen depths

where appropriate flow zones exist.

The annular space (i.e., the space

between the bore hole and the well casing) above the sampling depth must be sealed with a suitable material (e.g., cement grout or bentonite slurry) to prevent contamination of samples and the ground water and to prevent the loss of the volatile gases.

May, 2010 (Revised)

74

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