2023-06-06_PERMIT FILE - M2023015

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EXHIBIT A LONDON MINE,LLC Effluent Self Monitoring Data Monitoring Period Monitoring Repotted Outlall Start Date Period End Date Parameter Value Effluent Limit 001A 71111 7/31/12 Zinc,potentially dissolved ug/L MX 7D AV 2500 130 001A 7/111 7/31/12 Zinc,potentially dissolved ug/L ROLL AVG 2967 654 001A 7/1/1 7131112 Cadmium,potentially dissolved ug/L 30DA AVG 8.4 3 001A 8/1/1 8131112 00530-Solids,total suspended 30DA AVG <50 2 001A 811/1 8/31112 00530-Solids,total suspended MX 70 AV <50 30. 001A 8/1/1 8131/12 Zinc,potentially dissolved ug/L MX 7D AV 2200 130 001A 8l1/1 8/31/12 Zinc,potentially dissolved ug/L ROLL AVG 2967 65 001A 8/1/1 8/31/12 Cadmium,potentially dissolved ug/L 30DA AVG 7.9 3. 001A 9/1/1 9130/12 Zinc,potentially dissolved ug/L MX 70 AV 2400 13 001A 91111 9/30/12 Zinc,potentially dissolved ug/L ROLL AVG 2967 654 001A 91111 9/30/12 Cadmium,potentially dissolved ug/L 30DA AVG 7.8 3. 001A 1011/12 10/31/12 Zinc,potentially dissolved ug/L MX 7D AV 2100 130 001A 10/1/12 10/31/12 Zinc,potentially dissolved ug/L ROLL AVG 2967 654 001A 10/1/12 10/31/12 Cadmium,potentially dissolved ug/L 30DA AVG 8.3 1 001A 1111112 11130/12 Zinc,potentially dissolved ug/L MX 7D AV 2300 130( 001A 1111/12 11/30/12 Zinc,potentially dissolved ug/L ROLL AVG 2967 65 001A 1111/12 11/30/12 Cadmium,potentially dissolved ug/L 30DA AVG 8.2 3. 001A 12/1/12 12/31/12 Zinc,potentially dissolved ug/L MX 71)AV 2000 130 001A 1211/12 12/31/12 Zinc,potentially dissolved ug/L ROLL AVG 2967 654 001A 1211/12 12/31112 Cadmium,potentially dissolved ug/L 30DA AVG 6.6 3. 001A 1/1113 1131113 Zinc,potentially dissolved uglL MX 71)AV 1500 130 001A 1/1/1 1/31113 Zinc,potentially dissolved ug/L ROLL AVG 2967 654 001A 1/1/1 1/31/13 1 Cadmium,potentially dissolved ug/L 300A AVG 4.1 3. 001A 2/1/1 2/28/13 Zinc,potentially dissolved ug/L ROLL AVG 2967 654 EXHIBIT A London Mine,LLC et o/ Page 5 of 10