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RESPONSE: ~ i The C07 pond outfall will be monitored with a flume and a continuous recorder as is similarly done at NPGES outfalTs 002, 003, and 004 at the Seneca II P1ine. Installation of the monitoring equipment will begin within 30 days of completion of the 007 pond or as soon thereafter as weather and ground conditions permit. The text on Page 7-161 and Table 7-46 on Page 7-162 of Section VII A.2 have been revised to include this additional monitoring information. Below the proposed 007 pond, a crest stage gauge will be established this fall at monitoring site SW-52-9. The channel cross section, slope and rating curve for this site will be submitted with the 1986 AHR. The text on Page 7-161 and Table 7-46 on Page 7-163 of Section VII A.2 have been revised to reflect this additional monitoring information. COhiMEPiT: 6. Page 7-169 should be revised to indicate that the r"our new surface water monitoring sites will be monitored on the same day of the • month that NPDES Sites 004 and U07 are monitored for total dissolved solids. PESPONSE: Page 7-169 has been revised to indicate that the four new surface water monitoring sites will be monitored on the same day of the month that NPDES Sites 004 and 007 are monitored for total dissolved solids. CGMMENT: 7. The Division requests that Peabody respond to those concerns raised in the Duly 28, 1986 correspondence regarding the Annual Hydrology Repcrt, which remain unresolved. This response should be submitted v+ith the information requested in this ndequacy Review. RESPONSE: A letter was forwarded to CI4LRD on August 28, 1986 stating where the responses to the Annual Hydrology Report (AHR) concerns could be found in the permit responses. Specifically, responses to AHR concern 1 can _ be found in Tab 7, Section VII B.2.a. and responses to AHR concern 2 can be r"ound in Tab 7, Section VII A.2. 1R