Observation by Company. Representatives of the Company may conduct periodic observations of the Seller’s on- site activities for compliance with ES&H requirements. The Company’s Procurement Officer will notify the Seller in writing of observed noncompliances with applicable ES&H requirements. Seller shall take immediate and appropriate corrective action. Seller shall advise the Company’s Procurement Officer, in writing, within five (5) working days of the corrective action taken on any written noncompliance. Repeated or willful noncompliance with applicable ES&H requirements by the Seller shall constitute a default under other provisions of this contract and Company may terminate the contract in accordance with those provisions.