MRMTC Tabletop Workshop Reference Documents

Initial Site-Specific De-Inventory Report for Big Rock Point Report No.: RPT-3014537-002

With 15 tangible metrics to be evaluated, 105 pairwise evaluations had to be performed by each individual. Attachment A shows the entire pairwise evaluation for these metrics. Note, if the original 39 metrics were evaluated, then 741 pairwise evaluations will have had to have been performed to establish the weight for the metrics (burdensome). The favorability scale, shown in Figure 5-2 (e.g., “Strongly Favorable”), allows for quantification of the comparison when weights are assigned to the scale. In this MUA, the relative weighting is assessed as follows:  Strongly favorable as 11 (+5).

 More favorable as 9 (+3).  Mildly favorable as 7 (+1).  Neutral is rated as 6 (0).  Mildly unfavorable as 5 (-1).  More unfavorable as 3 (-3).  Strongly unfavorable as 1 (-5).

Using this weight scheme, Figure 5-3 shows the results for the relative weighting of the tangible metrics as established from the evaluation of eight individual pairwise comparisons. Table 5-2 shows the numerical values associated with these tangible metrics. Three sets of data are shown in this figure and four sets of data are shown in this table: 1. The “Minimum” value as established from the eight individual assessments. 2. The “Average Weight” value, which is an average of normalized results from each of the individual assessments (i.e., each individual’s assessment is equally weighted and the results combined). ܴത ௠ ൌ ∑ ൜ ∑ ே ೘,೛೔ ௐ ೔ ళ೔సభ ∑ ൣ∑ ே ೘,೛ ೔ ௐ ೔ ళ೔సభ ൧ ಾ೘సభ ൠ ௉௣ୀଵ /P where R = average relative weight, N = number of times rank selected, W = weight of rank (see above), M = number of metrics to be evaluated, P = number of evaluators, m. = metric, i = rank (e.g., “strongly favorable”), p = person evaluating metrics. 3. The “Biased Weight” value, which is an average of the unnormalized results from each of the individual assessments (i.e., the raw scores are used to establish overall average values, so if an individual scored significant differences between the metrics, then these results could skew the overall average in favor of this individual’s assessment). ܤ ത ௠ ൌ ቊ ∑ ൫∑ ܰ ௠,௣ ௜ ܹ ௜ ଻ ௜ୀଵ ൯ ௉௣ୀଵ ܲ ቋ ෍ ቊ ∑ ൫∑ ܰ ௠,௣ ௜ ܹ ௜ ଻ ௜ୀଵ ൯ ௉௣ୀଵ ܲ ቋ ெ ௠ୀଵ ൙ where B = averaged biased relative weight. 4. The “Maximum” value as established from the eight individual assessments. Results from all eight of the individual assessments are shown in Attachment B.

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Initial Site-Specific De-Inventory Report for Big Rock Point May 10, 2017

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