15. If I entered an NR (not reported) for my mercury concentration of a coal/fuel sample, how should I incorporate this value into the statistical equation. Should I use zero?

A. If your mercury analysis shows a value below the detection limit (e.g., NR (0.01 ppm)) you should use 1/2 the detection limit as the mercury concentration for the sample (in the example's case, 0.005 ppm).

16. We have two labs analyzing the same sample. One for short proximate and one for the mercury/chlorine analysis. Which one do I list in the "Laboratory" part of the analysis?

A. If you have two or more labs for each sample, list the lab doing the mercury/chlorine analysis.

17. The example spreadsheet for reporting analysis results lists "text" under the columns Obtain, Prepare, Analysis, Accuracy and Notes. Where should this text information be reported?

A. The word "text" is a placeholder for the blank spreadsheets dummy data only. The spreadsheet guide has a description by column heading of what to put in each column. Please put the answers to the questions in the columns provided instead of the word "text".

18. I get coal/fuel from numerous suppliers in a single shipment; which supplier do I record in the supplier fields of this single days shipment?

A. As you list the shipments for the month, cycle through the names and addresses of all your suppliers so that each shipment gets a different supplier in sequence. For example, the plant has 4 suppliers:

Shipment #1 assign Supplier A
Shipment #2 assign Supplier B
Shipment #3 assign Supplier C
Shipment #4 assign Supplier D
Shipment #5 assign Supplier A
Shipment #6 assign Supplier B
Shipment #7 assign Supplier C
Shipment #8 assign Supplier D
Shipment #9 assign Supplier A
Shipment #10 assign Supplier B
etc.

This technique applies to all shipment methods where single shipments have multiple suppliers.