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<br />David Berry <br />October 15, 1990 <br />Page Five <br />MLRD CONCERN: <br />Maos <br />1) We appreciate your submitting the new Map No.l (Twenrymile Park Hydrology); however, <br />the submittal is quite different from the one which we have in the approved document. <br />Please explain the difference. <br />Also the title block should not read "Twentymile Coal Co.". <br />CYCC Response: <br />Upon direct comparison oC the two maps in question, CYCC found only a few minor <br />differences. These differences (station numbers, excepted area boundaries) are the direct result <br />of updates to the original map submitted in 1983. The only major inconsistency is the title <br />block as referenced above and this has been revised. Copies of the revised Map no. 1 have been <br />enclosed. <br />MLRD CONCERN: <br />2) Map 4a will require further revision, and this will be done with the forthcoming drainage <br />control technical revision. This also applies to the new Map 4b. Please note that we did not <br />receive a Map 4b with this submittal. The Technical Revision will also eliminate Map 20, <br />and add the Pond M3N and M3S drawings as formally numbered maps. <br />CYCC Response: <br />As noted previously, only Maps 4A (Hydrology), M3N, and M3S will be included in the <br />drainage control technical revision. Map 4B (Hydrologic Monitoring) was submitted as part <br />of Minor Revision 90-10 (Fydrologic Monitoring Program), and is complete and up to date. <br />As such, Map 4B will not be included with the technical revision, given that it is unrelated to <br />drainage control and is deemed sufficient as is by CYCC. <br />MLRD CONCERN: <br />3) Please revise the List of Maps to show both Maps 16 and 16a. <br />CYCC Response: <br />As noted in a previous discussion, Map 16A (Reclamation) was intended to replace Map 16 <br />(Reclamation). As such, CYCC does not intend to revise the List of Maps at this time. <br />