Customer shall pay invoices issued by Supplier or its representatives net thirty (30) days after its receipt of a correct invoice. Invoice payment is contingent on the following conditions: (i) the invoice generally conforms to the requirements specified in this Section; and (ii) the volume of Sand invoiced has been delivered and accepted by Customer or Customer’s representative. If Customer determines that any invoice does not conform to the requirements in this Section or that any delivery of Sand does not conform to the requirements of this Agreement, Customer must notify Supplier in writing of any such non-conformity and, to the extent possible the Parties must work to resolve any such discrepancies within ten (10) days of the date of such notice. It is understood and agreed, however, that payment by Customer of an invoice shall not constitute a waiver of Customer’s right subsequently to audit or otherwise question or contest the amount or correctness of such invoice and to seek reimbursement.