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SOLID WASTE PROCESSING AND DISPOSAL

CHAPTER 1200-01-07

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

hazardous constituent in each well and shall be one of the following statistical methods:

  • (I)

    A parametric analysis of variance (ANOVA) followed by multiple comparisons procedures to identify statistically significant evidence of contamination. The method must include estimation and testing of the contrasts between each compliance monitoring well’s mean and the background mean levels for each constituent.

  • (II)

    An analysis of variance (ANOVA) based on ranks followed by multiple comparisons procedures to identify statistically significant evidence of contamination. The method must include estimation and testing of the contrasts between each compliance monitoring well’s median and the background median levels for each constituent.

(I)

The statistical method used to evaluate ground water monitoring data shall be appropriate for the distribution of chemical parameters or hazardous constituents. If the distribution of chemical parameters or hazardous constituents is shown by the owner or operator to be inappropriate for normal theory test, then the data should be transformed or a distribution - free theory test should be used. If the distributions of the constituents differ, more than one statistical method may be needed.

(II)

If an individual well comparison procedure is used to compare an individual compliance well constituent concentration with background concentrations or a ground water protection standard, the test shall be done at a Type I error level no less than 0.01 for each testing period. If a multiple comparisons procedure is used, the Type I experiment wise error rate for each testing period shall be no less than 0.05; however, the Type I error of no less than 0.01 for

individual well standard does control charts.

(III)

A tolerance or prediction interval procedure in which an interval for each constituent is established from the distribution of the background data, and the level of each constituent in each compliance monitoring well is compared to the upper tolerance or prediction limit.

comparisons must be not apply to tolerance

maintained. This performance intervals, prediction intervals, or

(IV)

A control chart approach that gives control limits for each constituent.

(V)

Another statistical test method that meets the performance standards of Rule 1200-01-07-.04 (7) (a) 4. (vi).

(vi)

The owner or operator must obtain a variance as provided at Rule 1200-

01-07-.01(5) in order to use an alternative statistical statistical method chosen under subpart (v) above shall following performance standards if appropriate:

method. Any comply with the

(III)

If a control chart approach is used to evaluate ground water monitoring data, the specific type of control chart and its associated parameter values shall be protective of human health and the environment. The parameters shall be determined after considering the number of samples in the background data base, the data

May, 2010 (Revised)

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