2023-06-06_PERMIT FILE - M2023015

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EXHIBIT A LONDON MINE,LLC Effluent Self Monitoring Data Monitoring Period Monitoring Reported Outrall Start Date Period End Date Parameter Value Effluent Limit 001A 4/1/1 4130115 Zinc,potentially dissolved ug/L ROLL AVG 4265 65 001A 5/1/1 5/31115 Zinc,potentially dissolved ug/L ROLL AVG 4265 65 001A 6/1/1 6/30/15 Zinc,potentially dissolved ugiL ROLL AVG 4155 654 001A 61111 6130/15 Zinc,potentially dissolved ug/L MX 70 AV 4200 130 001A 61111 6130/15 Cadmium,potentially dissolved ug/L 300A AVG 18 3. 001A 7/1/1 7131/15 Zinc,potentially dissolved uglL ROLL AVG 4420 654 001A 7/1/1 7/31/15 Zinc,potentially dissolved ug/L MX 70 AV 8900 i 001A 7/1/1 f 7131115 Cadmium,potentially dissolved ug/L 30DA AVG 40 3. 001A 8/1/1 8/31/15 Zinc,potentially dissolved ug/L ROLL AVG 4820 001A 8/1/1 8131/15 Zinc,potentially dissolved ug/L MX 7D AV 5500 1 001A 8l1/1 8/31115 Cadmium,potentially dissolved ug/L 30DA AVG 20 3 001A 9/1/1 9130/15 Zinc,potentially dissolved ug/L MX 7D AV 3800 130 001A 9/1/1 9130115 Zinc,potentially dissolved ug/L ROLL AVG 4820 654 001A 9/i/it 9130115 Cadmium,potentially dissolved ug/L 300A AVG 13 3. 001A 1011/15 10/31/15 Zinc,potentially dissolved ug/L MX 70 AV 3200 130 001A 1011115 10/31/15 Zinc,potentially dissolved ug/L ROLL AVG 4640 654 001A 1011115 10/31115 Cadmium,potentially dissolved ug/L 30DA AVG 12 3 001A 11/1/15 11/30115 Zinc,potentially dissolved ug/L MX 7D AV 2200 130( 001A 11/1/15 11/30/15 Zinc,potentially dissolved ug/L ROLL AVG 4640 654 001A 11/1/15 11/30/15 Cadmium,potentially dissolved ug/L 30DA AVG 71 3. 001A 12/1115 12/31115 Zinc,potentially dissolved ug/L MX 70 AV 1700 13 001A 1211115 12/31/15 Zinc,potentially dissolved ug/L ROLL AVG 4640 654 001A 1211115 12/31/15 Cadmium,potentially dissolved ug/L 30DA AVG 4.9 3. 001A 111/1 1/31116 Zinc,potentially dissolved ug/L MX 70 AV 1500 1 EXHIBIT A London Mine,LLC et of Page 9 of 20