Some producers of RSI will send chemical samples to an independent laboratory to verify accurate chemistry. Results of the testing will be forwarded to the producer.

Periodic verification of instrument performance assures satisfactory instrument response. The check analysis system allows an evaluation of the overall analytical performance and the identified sources of gross error or bias in values indicating instrument failure and operator error. The check analysis system may also evaluate by non-spectroscopic means.

Quality control of analytical results by an independent laboratory is mandatory for good laboratory practice.

Specific producers will be contacted with instructions.

If you have any questions about CAP please contact:

Mr. Tracy Herron

(270)755-6303

Logan Aluminum Inc.

US Highway 431 N

Russellville, KY 42276

Tracy.Herron@Logan-Aluminum.com

Chart Ca (Calcium) and Na (Sodium) truckload (or rail car) weighted average by ship date and shipment number. The average for the whole month must also be displayed. See the attached charts as a guide. Charts must show chemistry for all 5182 shipments made to Logan Aluminum in a calendar month.

Every supplier must look for reasonable and safe ways to reduce Ca and Na in and on their product. Lime must never be used as a mold release agent or refractory trough coating. It is very suggested that each supplier chart this data on a regular basis (weekly perhaps?) to better understand changes in their process.

Additional element reporting may be required in the future.

Gary Gettings

Logan Aluminum Inc.

US Highway 431 N

Russellville, KY 42276

Gary.Gettings@logan-aluminum.com

and

Mr. Tracy Herron

(270)755-6303

Logan Aluminum Inc.

US Highway 431 N

Russellville, KY 42276

Tracy.Herron@Logan-Aluminum.com

Element range must begin from 0.0000. Both the chart by shipment number and shipment date must be on the same page. Both charts for each element must have the same scale for the charted element.

A simple spreadsheet was used to make this chart.

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