Specific Comments on the Magnetometer Survey Tutu Service Station Investigation
ATTACHMENT B SPECIFIC COMMENTS ON THE MAGNETOMETER SURVEY TUTU SERVICE STATION INVESTIGATION Page 9, 4th Paragraph - The calibration process should be described in more detail (i.e., how accurate was the calibration?). Page 10, 2nd Paragraph, 2nd Sentence - The term "a few gammas" should be quantified. Page 10, 2nd Paragraph, 4th Sentence - Was the base station the same for all three surveys? Page 10, 3rd Paragraph, 2nd Sentence - How was a regional component of 40500 gammas determined? Page 11, 1st Paragraph - The discussion on negative anomalies is not self-evident and requires clarification. Page 12, 3rd Paragraph, 2nd Sentence - What magnitude of anomalies are associated with steel pipes? How can a distinction be made? Page 12, 3rd Paragraph - Reference is made to computer modeling. The modeling software, assumptions used, and results should be described in more detail and be appended. Page 12, 3rd Paragraph, Final Sentence - The coordinates given for boring B-l is 25E, 24N, and Figure 10 is referenced. …
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ATTACHMENT B SPECIFIC COMMENTS ON THE MAGNETOMETER SURVEY TUTU SERVICE STATION INVESTIGATION Page 9, 4th Paragraph - The calibration process should be described in more detail (i.e., how accurate was the calibration?). Page 10, 2nd Paragraph, 2nd Sentence - The term "a few gammas" should be quantified. Page 10, 2nd Paragraph, 4th Sentence - Was the base station the same for all three surveys? Page 10, 3rd Paragraph, 2nd Sentence - How was a regional component of 40500 gammas determined? Page 11, 1st Paragraph - The discussion on negative anomalies is not self-evident and requires clarification. Page 12, 3rd Paragraph, 2nd Sentence - What magnitude of anomalies are associated with steel pipes? How can a distinction be made? Page 12, 3rd Paragraph - Reference is made to computer modeling. The modeling software, assumptions used, and results should be described in more detail and be appended. Page 12, 3rd Paragraph, Final Sentence - The coordinates given for boring B-l is 25E, 24N, and Figure 10 is referenced. However, according to Figure 10, the coordinates of boring B-l should be approximately 20E, 15N. Page 13, 3rd Paragraph, Final Sentence - A description of the contour diagram should be provided with the "erroneous" data point removed. Figure 12 - the apparent discontinuities in magnetic contours should be explained. Also, the proposed borings and/or monitoring wells should be shown on the magnetic field maps. Figure 13 - The locations for proposed monitoring wells MW-4 and MW-4D transposed according to all other figures in the report showing their locations. -4- *64510* 64510