2023-06-06_PERMIT FILE - M2023015

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EXHIBIT A LONDON MINE,LLC Effluent Self Monitoring Data Monitoring Period Monttoring Reported outfail Start Date Period End Date Parameter Value Effluent Umit 001A 2JI113 2/28/13 Cadmium,potentially dissolved ug/L 30DA AVG 36 3. 001A 311/1 3/31113 Zinc,potentially dissolved ug/L MX 7D AV 1300 130 001A 311/1 3/31/13 Zinc,potentially dissolved ug/L ROLL AVG 2967 654 001A 3/1/1 3/31113 Cadmium,potentially dissolved ug/L 30DA AVG 3.3 3. 001A 4/1/1 4/30/13 Zinc,potentially dissolved uglL MX 7D AV 1300 130 001A 4/1/1 4/30113 Zinc,potentially dissolved ug/L ROLL AVG 2967 654 001A 4/1/1 4/30/13 Cadmium,potentially dissolved ug/L 300A AVG 4 3. 001A 5l1/1 5/31113 Zinc,potentially dissolved ug/L MX 7D AV 1700 1301 001A 5/1/1 5/31/13 Zinc,potentially dissolved ug/L ROLL AVG 2967 654 001A 5/1/1 5/31/13 Cadmium,potentially dissolved ug/L 30DA AVG 54 3, 001A 6/1/1 6/30113 Zinc,potentially dissolved ug/L ROLL AVG 3279.5 654 001A 6/1l1 6/30113 Zinc,potentially dissolved ug/L MX 7D AV 4400 130( 001A 6/1/1 6130/13 Cadmium,potentially dissolved ug/L 30DA AVG 17 3 001A 7/1/1 7/31/13 Zinc,potentially dissolved ug/L ROLL AVG 3279.5 654 001A 7/1/1 7/31113 Zinc,potentially dissolved ug/L MX 7D AV 4100 130 001A 7/1/1 7131113 Cadmium,potentially dissolved ug/L 30DA AVG 14 3 001A 8/1/t 8/31113 Zinc,potentially dissolved ug/L ROLL AVG 35145 654 001A 8/1/1 8131/13 Zinc,potentially dissolved ug/L MX 7D AV 3900 130 001A 8/1/1 8131113 Cadmium,potentially dissolved ug/L 30DA AVG 14 3. 001A 9/1/1 9/30113 Zinc,potentially dissolved ug/L ROLL AVG 3655 654 001A 9/1/1 9130/13 Zinc,potentially dissolved ug/L MX 7D AV 3700 130 001A 9/1/1 9/30/13 Cadmium,potentially dissolved ug/L 30DA AVG 13 3 001A 10/1/13 10/31/13 Zinc,potentially dissolved ug/L ROLL AVG 3810 654 001A 1011113 10/31/13 Zrnc,potentially dissolved ug/L MX 7D AV 4600 13 EXHISiT A London M/ne,LLC et of Page 6 of 10