1. Inventory tag-out Biodiesel Process Overview Reactor Glycerin Isolated Shipment Lot Shipping sample/test Purchasing Inventory Production Sales Shipping Customer Support Purchase Order Receiving Receiving Inspection per material spec Method Cut Tank “I” Reactor Source Reactor or Holding Tank MWT Monomer Weigh Tank Methanol Glycerin Recovery Methanol Bulk Methanol Biodiesel Recovery Glycerin Methanol Acid Wash Catalyst Feedstock Multiple Batches D6751 Reactor-F or I Multiple Bulk Storage Tanks INSPECTION POINTS Receiving List Checklist material dependent Glycerin Demethylation Glycerin sales or scrap Biodiesel Catalyst Sodium Methylate Water Step-01 Step-02 Demethylation of Biodiesel Step-03 Water Wash recovery Step-04a Step-04b 01-15-0002-03 Page 1 of 5 3/27/07 Shipment Lot Inspect Step-05 Batch Final Dry Step-04c Feedstock Soybean Oil COA

2. References 1.Purchase Order 01-12-0005 Listing of Quality Records 19-02-0001 Receiving & Unloading Tanker Trucks 06-09-0001 Purchase Order Procedure 19-02-0009 Receiving & Unloading Railcars 06-12-0002 Purchase Order Form 19-02-0010 Shipping Product by Tanker or Railcar 2.Receiving 06-09-0001 Purchase Order Procedure 19-12-0004 Bulk Receiving Checklist 19-02-0001 Receiving & Unloading Tanker Trucks 19-12-0005 Inventory Checklist for Bulk Receiving 19-02-0009 Receiving & Unloading Railcars 19-12-0007 Daily Receiving Report Log 19-12-0003 Railcar Checklist (Ship & Receive) 3.Receiving Inspection 11-02-0002 QA Lab Specification Transmittal Sheet (except shipment samples) 11-11-0002 Lab Spec Methanol 11-02-0013 Work Instruction for Providing Samples to QA 11-11-0003 Lab Spec Sodium Methoxide 11-11-0001 Lab Spec Soybean Oil 4.Step 01 - Reactor 23-12-0001 “I” Reactor Log Sheet11-11-0006 Lab Spec-”I” Reactor Demethylation of Glycerin 23-12-0002 “I” Reactor Demethylation Log Sheet11-11-0010 Lab Spec-”I” Reactor (In-Process) 23-12-0003 “H” Reactor Log Sheet11-13-0001 Batch Step 1-Biodiesel “I” Reactor 11-02-0006 Glycerin Determination in Reactor Sample11-13-0011 Batch Step 1-Biodiesel “H” Reactor 11-02-0008 Test Method Oil in Glycerin23-13-0002 Biodiesel, “I” Reactor SOP 11-11-0004 Lab Spec Reactor (In-Process)23-13-0005 Biodiesel, “H” Reactor SOP 5.Step 02 - Glycerin 11-02-0009 K-F Water Determination Method11-11-0011 Lab Spec-”F” Reactor Demethylation of Biodiesel 11-11-0006 Lab Spec-”I” Reactor Demethylation of Glycerin11-13-0002 Batch Step 2-Biodiesel Glycerin 01-15-0002-03 Page 2 of 5

3. References 6.Step 03 – Demethylation of Biodiesel 11-11-0006 Lab Spec-”I” Reactor Demethylation of Glycerin 23-12-0002 “I” Reactor Demethylation Log Sheet 11-11-0009 Lab Spec Demethylation of Biodiesel24-12-0001 Cut Tank Log Sheet 11-13-0004 Batch Step 3-Biodiesel Demethylation by Cut Tank24-13-0001 Cut Tank Demethylation Procedure 7.Step 04 – Blend Tank 11-11-0005 Lab Spec Blend (In-Process) 23-12-0006 Isolation of Bulk Tanks Ready for Shipment 11-13-0007 Batch Step 4-Biodiesel Wash by Blend Tank 23-13-0003 Recovery of Biodiesel from Water Wash 11-13-0012 Batch Card Citric Acid Solution 23-13-0004 Biodiesel Single or Double Water Wash SOP 11-13-0013 Batch Card Biodiesel from Water Wash 8.Step 05 – Shipment Lot 11-02-0002 QA Lab Specification Transmittal Sheet (except shipment samples) 11-02-0014 WI for Relative Density Determination 11-02-0011 Determining Significant Process Change 11-02-0015 WI for COA for Shipment of Biodiesel (D6751) 11-02-0012 Shipment Lot Tank Homogeneity 11-13-0006 Batch Step 5-Biodiesel Lot D6751 COA 11-02-0013 Work Instruction for Providing Samples to QA 23-13-0006 Isolation of Bulk Tanks Ready for Shipment 9.Shipment D6751 03-02-0001 Shipment & Billing of Finished Goods Procedure11-11-0008 Lab-Ship Sample Test 03-12-0003 Open Sales Orders Form19-02-0010 Shipping Product by Tanker or Railcar 11-02-0003 QA STS Definitions (for D6751 Shipment)19-12-0006 Daily Shipping Report Log 11-02-0015 WI for COA for Shipment of Biodiesel (D6751) 19-02-0004 Pulling Samples from Tankers Loaded for 11-02-0016 WI for QA STS for Ship or Past 30 Days Sample Shipment 01-15-0002-03 Page 3 of 5

4. Document Approvals Role/Position (Normative) Owner: (informational) Approval Date COOBill McIlwain CTOTerry Boone Role/PositionReviewed By: QARavi Doshi HSEJohn Roberts PurchasingPeggy Davis Approved By: Document ControlJan Rector Instructions for filling out Document Approval Form 1. Identify the owner of the document who has technical authority for content. 2. Identify the authority required to review and approve (authority role). 3. Identify who acts within required authority for this release. 4. Approval date signifies that Document Control has received acceptance of approval. 5. Document Control has structural control as defined in 01-01-0001 Preparation & Release of Controlled Documents. 01-15-0002-03 Page 4 of 5

5. Revision History DateRevision No.Modification Reason 10/31/0600Original issue 12/7/0601Multiple clerical updates. 1/12/0702Deleted tanks under Feedstock, added Tank 81; deleted tanks under Methanol Glycerin Recovery and Biodiesel Recovery; updated doc. number for H Reactor BC; Deleted inspection checkpoint under Glycerin. 3/27/0703Add References; deleted tank numbers & document numbers in flow chart. 01-15-0002-03 Page 5 of 5