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Three additional chemicals will be used as temporary test chemicals in small quantities. These <br />chemicals are to be handled in similar fashion as all other chemicals on site and will be a one- <br />time use. If it is decided that these chemicals will be used on an ongoing basis in the mill, a new <br />Technical Revision will be submitted to address these new chemicals and their use and storage. <br />These chemicals are safe and present no threat to the environment, especially in the quantities <br />listed. <br />The chemicals are listed below: <br />Aerophine 3418A -10 gallons <br />Aero XD 504 -2 gallons <br />Aero XD 202- 2 gallons. <br />These are all Cytec products. <br />Item 10 — Pronane Tanks and Miscellaneous Items around Tanks <br />There will be a total of 6 - 1000 gallon steel propane tanks located on site. Two will be located <br />on the surface approximately 100 feet east of the Filter Building. These two tanks will supply <br />heat to the Filter Building and the Mine Shop areas in the small portals. The gas lines are buried <br />to these two locations. The tanks sit directly on the ground as shown on Map C -2. <br />Two additional 1000 gallon propane tanks will exist behind the Dry Building approximately 30 <br />feet southwest of the southwest corner of the building. These tanks will sit directly on the ground <br />with underground gas line to the Dry Building. <br />The last 2 —1000 gallon tanks are partially buried near the Main Portal and will be used to <br />provide gas to the Portal Heater. The Portal is a short distance from the tanks as shown on Map <br />C -2. In addition to these tanks at this location, there are buried gas lines to the portal heater and a <br />concrete slab mounted propane vaporizer. Upon reclamation, the propane tanks will be <br />excavated and hauled off site for use elsewhere. The vaporizer will also be hauled off site since it <br />