Common use of Time and Material Rates Clause in Contracts

Time and Material Rates. Services performed under this Contract on a time and materials basis will be computed in accordance with the rate sheet included below. Annual adjustments to the Time and Material Rates of this Attachment 8 will be made in the ordinary course of Seller’s business, shall be consistent with its rates to other similarly situated customers, and shall be based upon documented cost increases incurred by Seller. Seller shall be reimbursed for travel, lodging, and normal out-of-pocket expenses incurred in connection with the performance of the services. Travel shall be at coach class within the continental United States. Travel expenses shall be billed at cost. * Exhibit 10.50(a) to Form 10-Q for the Quarter Ended September 30, 2008 filed by ADA-ES, Inc. (File No. 000-50216) on November 7, 2008 Attachment 9 EPC Schedule The following EPC Schedule is solely for purposes of the provisions of Article 9 of this Contract, and subsequent revisions to the EPC Schedule are as between Purchaser and EPC Contractor. Any such subsequent variations after the Effective Date that adversely affect Seller’s ability to meet the Project Schedule shall, pursuant to Article 9, entitle Seller to an equitable adjustment to the Contract Price or the Project Schedule, or both pursuant to a Change Order in accordance with this Contract. Exhibit 10.50(a) to Form 10-Q for the Quarter Ended September 30, 2008 filed by ADA-ES, Inc. (File No. 000-50216) on November 7, 2008 Attachment 10 Supplemental Terms for On-Site Services SC-S1. Purchaser’s Obligations at the Site Purchaser will render reasonable assistance to Seller’s personnel at the Site as described in Attachment 2 (“Technical Requirements”).

Time and Material Rates. Services performed under this Contract on a time and materials basis will be computed in accordance with the rate sheet included below. Annual adjustments to the Time and Material Rates of this Attachment 8 will be made in the ordinary course of Seller’s business, shall be consistent with its rates to other similarly situated customers, and shall be based upon documented cost increases incurred by Seller. Seller shall be reimbursed for travel, lodging, and normal out-of-pocket expenses incurred in connection with the performance of the services. Travel shall be at coach class within the continental United States. Travel expenses shall be billed at cost. * Exhibit 10.50(a10.50(c) to Form 10-Q for the Quarter Ended September 30, 2008 filed by ADA-ES, Inc. (File No. 000-50216) on November 7, 2008 Attachment 9 EPC Schedule The following EPC Schedule is solely for purposes of the provisions of Article 9 of this Contract, and subsequent revisions to the EPC Schedule are as between Purchaser and EPC Contractor. Any such subsequent variations after the Effective Date that adversely affect Seller’s ability to meet the Project Schedule shall, pursuant to Article 9, entitle Seller to an equitable adjustment to the Contract Price or the Project Schedule, or both pursuant to a Change Order in accordance with this Contract. Exhibit 10.50(a10.50(c) to Form 10-Q for the Quarter Ended September 30, 2008 filed by ADA-ES, Inc. (File No. 000-50216) on November 7, 2008 Attachment 10 Supplemental Terms for On-Site Services SC-S1. Purchaser’s Obligations at the Site Purchaser will render reasonable assistance to Seller’s personnel at the Site as described in Attachment 2 (“Technical Requirements”).

Time and Material Rates. Services performed under this Contract on a time and materials basis will be computed in accordance with the rate sheet included below. Annual adjustments to the Time and Material Rates of this Attachment 8 will be made in the ordinary course of Seller’s business, shall be consistent with its rates to other similarly situated customers, and shall be based upon documented cost increases incurred by Seller. Seller shall be reimbursed for travel, lodging, and normal out-of-pocket expenses incurred in connection with the performance of the services. Travel shall be at coach class within the continental United States. Travel expenses shall be billed at cost. * Exhibit 10.50(a10.50(d) to Form 10-Q for the Quarter Ended September 30, 2008 filed by ADA-ES, Inc. (File No. 000-50216) on November 7, 2008 Attachment 9 EPC Schedule The following EPC Schedule is solely for purposes of the provisions of Article 9 of this Contract, and subsequent revisions to the EPC Schedule are as between Purchaser and EPC Contractor. Any such subsequent variations after the Effective Date that adversely affect Seller’s ability to meet the Project Schedule shall, pursuant to Article 9, entitle Seller to an equitable adjustment to the Contract Price or the Project Schedule, or both pursuant to a Change Order in accordance with this Contract. Exhibit 10.50(a10.50(d) to Form 10-Q for the Quarter Ended September 30, 2008 filed by ADA-ES, Inc. (File No. 000-50216) on November 7, 2008 Attachment 10 Supplemental Terms for On-Site Services SC-S1. Purchaser’s Obligations at the Site Purchaser will render reasonable assistance to Seller’s personnel at the Site as described in Attachment 2 (“Technical Requirements”).

Time and Material Rates. Services performed under this Contract on a time and materials basis will be computed in accordance with the rate sheet included below. Annual adjustments to the Time and Material Rates of this Attachment 8 will be made in the ordinary course of Seller’s business, shall be consistent with its rates to other similarly situated customers, and shall be based upon documented cost increases incurred by Seller. Seller shall be reimbursed for travel, lodging, and normal out-of-pocket expenses incurred in connection with the performance of the services. Travel shall be at coach class within the continental United States. Travel expenses shall be billed at cost. * Exhibit 10.50(a10.50(b) to Form 10-Q for the Quarter Ended September 30, 2008 filed by ADA-ES, Inc. (File No. 000-50216) on November 7, 2008 Attachment 9 EPC Schedule The following EPC Schedule is solely for purposes of the provisions of Article 9 of this Contract, and subsequent revisions to the EPC Schedule are as between Purchaser and EPC Contractor. Any such subsequent variations after the Effective Date that adversely affect Seller’s ability to meet the Project Schedule shall, pursuant to Article 9, entitle Seller to an equitable adjustment to the Contract Price or the Project Schedule, or both pursuant to a Change Order in accordance with this Contract. Exhibit 10.50(a10.50(b) to Form 10-Q for the Quarter Ended September 30, 2008 filed by ADA-ES, Inc. (File No. 000-50216) on November 7, 2008 Attachment 10 Supplemental Terms for On-Site Services SC-S1. Purchaser’s Obligations at the Site Purchaser will render reasonable assistance to Seller’s personnel at the Site as described in Attachment 2 (“Technical Requirements”).