2019-03-18_PERMIT FILE - M2018016 (9)

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42. On Page G-2, the Applicant states topsoil windrows constructed from topsoil strippedin advance of mining will have a one foot deep ditch dug around them for stormwater collection. Please provide a typical detail for the stormwater collection ditch. See the revised Exhibit G. 43. On Page G-2, the Applicant states in the event groundwater is exposed, said excavation will be backfilled to two feet above the groundwater level. Please commit to noting the Division immediately if the groundwater elevation is exposed during the mining operation. The applicant will notify the Division within 24-hours if groundwater is exposed during the mining operation. This is the same notification period as required for any slope failure, and the applicant feels it is appropriate. 44. On Page G-3, the Applicant states four wells are located within 600 feet of the mining area. On Page G-1 of the application amendment the Applicant stated there are 7 wells within 600 feet of the proposed mine site. On the Exhibit C-1 map, the Applicant indicates 8 wells within 600 feet of the proposed mine site. Please explain this discrepancy and update the application amendment accordingly. See the revised Exhibit G. 45. On Page G-3, the Applicant states Table G-1 lists the wells within 600 feet. Only 4 wells are listed on Table G-1,please update the table to list all wells within 600 feet of the proposed mine site. There are only four wells within 600 feet of the mining pit area. 46. On Page G-3, the Applicant states Appendix 4 contains a copy of the well permits within 600 feet. The Applicant provided 9 well permits in the appendix, however only 8 of the wells are indicated on the Exhibit C-1 map. Please update the Exhibit C-1 map to indicate the location of well number 271467 owned by Mel Lindquist. Well 271467 is west of the permit area,just off the map. It is over 1600 feet away from the permit boundary. It was included in the previous application when mining extended further west. 47. On Page G-4, the Applicant states the drilling data for the Deere and Ault TH-4 and TH-5 drillholes are provided in Appendix 3. The Deere and Ault Figure No 2.provided in the appendix indicates four cross-sections;A-A', B-B', C-C'and D-D'. Please provide copies of the cross-sections for Division review. The cross sections on Deere &Ault are on Plate 1 which is attached. 48. On Page G-4, the Applicant states water will be supplied via either ditch rights or onsite wells. Please provide the legal source allowing the ditch rights or groundwater well to be used for mining/industrial use. The water rights provided in the amended application will be the first source of water for the operation. The applicant will apply for any substitute water supply plan or augmentation plan required by the CDWR. See item 50 for further information. DMR Aline AM-01 10 ("'T Ie•en•Ai and III 1