Financial assurance condition

In accordance with subparagraph f of paragraph 6 of subdivision y of subsection 1 of section 33.1-24-02-04, an owner or operator of a reclamation or intermediate facility shall have financial assurance as a condition of the exclusion as required under subdivision y of subsection 1 of section 33.1-24-02-04. The owner or operator shall choose from the options as specified in subsections 1 through 5. 1. Trust fund. a. An owner or operator may satisfy the requirements of this section by establishing a trust fund which conforms to the requirements of this subsection and submitting an originally signed duplicate of the trust agreement to the department. The trustee must be an entity that has the authority to act as a trustee and whose trust operations are regulated and examined by a federal agency or by the state department of financial institutions. b. The wording of the trust agreement must be identical to the wording specified in subdivision a of subsection 1 of section 33.1-24-02-42 and the trust agreement must be accompanied by a formal certification of acknowledgment (for example, see subdivision b of subsection 1 of section 33.1-24-02-42). Schedule A of the trust agreement must be updated within sixty days after a change in the amount of the current cost estimate covered by the agreement. c. The trust fund must be funded for the full amount of the current cost estimate before it may be relied upon to satisfy the requirements of this subsection. d. Whenever the current cost estimate changes, the owner or operator shall compare the new estimate with the trustee's most recent annual valuation of the trust fund. If the value of the fund is less than the amount of the new estimate, the owner or operator, within sixty days after the change in the cost estimate, either shall deposit an amount into the fund so that its value after this deposit at least equals the amount of the current cost estimate, or obtain other financial assurance as specified in this section to cover the difference. e. If the value of the trust fund is greater than the total amount of the current cost estimate, the owner or operator may submit a written request to the department for release of the amount in excess of the current cost estimate. f. If an owner or operator substitutes other financial assurance as specified in this section for all or part of the trust fund, the owner or operator may submit a written request to the department for release of the amount in excess of the current cost estimate covered by the trust fund. g. Within sixty days after receiving a request from the owner or operator for release of funds as specified in subdivisions e or f, the department will instruct the trustee to release to the owner or operator such funds as the department specifies in writing. If the owner or operator begins final closure under sections 33.1-24-05-59 through 33.1-24-05-69 or subsection 5 of section 33.1-24-06-16, an owner or operator may request reimbursements for partial or final closure expenditures by submitting itemized bills to the department. The owner or operator may request reimbursements for partial closure only if sufficient funds are remaining in the trust fund to cover the maximum costs of closing the facility over its remaining operating life. No later than sixty days after receiving bills for partial or final closure activities, the department will instruct the trustee to make reimbursements in those amounts as the department specifies in writing, if the department determines that the partial or final closure expenditures are in accordance with the approved closure plan, or otherwise justified. If the department has reason to believe the maximum cost of closure over the remaining life of the facility will be significantly greater than the value of the trust fund, the department may withhold reimbursements of such amounts as the department deems prudent until the department determines, in accordance with subsection 9, that the owner or operator is no longer required to maintain financial assurance for final closure of the facility. If the department does not instruct the trustee to make such reimbursements, the department will provide to the owner or operator a detailed written statement of reasons. h. The department will agree to termination of the trust when: (1) An owner or operator substitutes alternate financial assurance as specified in this section; or (2) The department releases the owner or operator from the requirements of this section in accordance with subsection 9. 2. Surety bond guaranteeing payment into a trust fund. a. An owner or operator may satisfy the requirements of this section by obtaining a surety bond that conforms to the requirements of this subsection and submitting the bond to the department. The surety company issuing the bond shall, at a minimum, be among those listed as acceptable sureties on federal bonds in circular 570 of the United States department of the treasury. b. The wording of the surety bond must be identical to the wording specified in subsection 2 of section 33.1-24-02-42. c. The owner or operator who uses a surety bond to satisfy the requirements of this section also shall establish a standby trust fund. Under the terms of the bond, all payments made thereunder will be deposited by the surety directly into the standby trust fund in accordance with instructions from the department. This standby trust fund must meet the requirements specified in subsection 1, except that: (1) An originally signed duplicate of the trust agreement must be submitted to the department with the surety bond; and (2) Until the standby trust fund is funded pursuant to the requirements of this subsection, the following are not required by this chapter: (a) Payments into the trust fund as specified in subsection 1; (b) Updating of schedule A of the trust agreement (see subsection 1 of section 33.1-24-02-42) to show current cost estimates; (c) Annual valuations as required by the trust agreement; and (d) Notices of nonpayment as required by the trust agreement. d. The bond must guarantee that the owner or operator will: (1) Fund the standby trust fund in an amount equal to the penal sum of the bond before loss of the exclusion under subdivision y of subsection 1 of section 33.1-24-02-04; (2) Fund the standby trust fund in an amount equal to the penal sum within fifteen days after an order to begin closure is issued by the department, or within fifteen days after an order to begin closure is issued by a United States district court or other court of competent jurisdiction; or (3) Provide alternate financial assurance as specified in this section, and obtain the department's written approval of the assurance provided, within ninety days after receipt by both the owner or operator and the department of a notice of cancellation of the bond from the surety. e. Under the terms of the bond, the surety will become liable on the bond obligation when the owner or operator fails to perform as guaranteed by the bond. f. The penal sum of the bond must be in an amount at least equal to the current cost estimate, except as provided in subsection 6. g. Whenever the current cost estimate increases to an amount greater than the penal sum, the owner or operator, within sixty days after the increase, either shall cause the penal sum to be increased to an amount at least equal to the current cost estimate and submit evidence of such increase to the department, or obtain other financial assurance as specified in this section to cover the increase. Whenever the current cost estimate decreases, the penal sum may be reduced to the amount of the current cost estimate following written approval by the department. h. Under the terms of the bond, the surety may cancel the bond by sending notice of cancellation by certified mail to the owner or operator and to the department. Cancellation may not occur, however, during the one hundred twenty days beginning on the date of receipt of the notice of cancellation by both the owner or operator and the department, as evidenced by the return receipts. i. The owner or operator may cancel the bond if the department has given prior written consent based on the department's receipt of evidence of alternate financial assurance as specified in this section. 3. Letter of credit. a. An owner or operator may satisfy the requirements of this section by obtaining an irrevocable standby letter of credit which conforms to the requirements of this subsection and submitting the letter to the department. The issuing institution must be an entity which has the authority to issue letters of credit and whose letter-of-credit operations are regulated and examined by a federal agency or by the state department of financial institutions. b. The wording of the letter of credit must be identical to the wording specified in subsection 3 of section 33.1-24-02-42. c. An owner or operator who uses a letter of credit to satisfy the requirements of this section also shall establish a standby trust fund. Under the terms of the letter of credit, all amounts paid pursuant to a draft by the department will be deposited by the issuing institution directly into the standby trust fund in accordance with instructions from the department. This standby trust fund must meet the requirements of the trust fund specified in subsection 1, except that: (1) An originally signed duplicate of the trust agreement must be submitted to the department with the letter of credit; and (2) Unless the standby trust fund is funded pursuant to the requirements of this section, the following are not required by this chapter: (a) Payments into the trust fund as specified in subsection 1; (b) Updating of schedule A of the trust agreement (see subsection 1 of section 33.1-24-02-42) to show current cost estimates; (c) Annual valuations as required by the trust agreement; and (d) Notices of nonpayment as required by the trust agreement. d. The letter of credit must be accompanied by a letter from the owner or operator referring to the letter of credit by number, issuing institution, and date, and providing the following information: The identification number (if any issued), name, and address of the facility, and the amount of funds assured for the facility by the letter of credit. e. The letter of credit must be irrevocable and issued for a period of at least one year. The letter of credit must provide that the expiration date will be automatically extended for a period of at least one year unless, at least one hundred twenty days before the current expiration date, the issuing institution notifies both the owner or operator and the department by certified mail of a decision not to extend the expiration date. Under the terms of the letter of credit, the one hundred twenty days will begin on the date when both the owner or operator and the department have received the notice, as evidenced by the return receipts. f. The letter of credit must be issued in an amount at least equal to the current cost estimate, except as provided in subsection 6. g. Whenever the current cost estimate increases to an amount greater than the amount of the credit, the owner or operator, within sixty days after the increase, either shall cause the amount of the credit to be increased so that it at least equals the current cost estimate and submit evidence of such increase to the department, or obtain other financial assurance as specified in this section to cover the increase. Whenever the current cost estimate decreases, the amount of the credit may be reduced to the amount of the current cost estimate following written approval by the department. h. Following a determination by the department that the hazardous secondary materials do not meet the conditions of the exclusion under subdivision y of subsection 1 of section 33.1-24-02-04, the department may draw on the letter of credit. i. If the owner or operator does not establish alternate financial assurance as specified in this section and obtain written approval of such alternate assurance from the department within ninety days after receipt by both the owner or operator and the department of a notice from the issuing institution that it has decided not to extend the letter of credit beyond the current expiration date, the department will draw on the letter of credit. The department may delay the drawing if the issuing institution grants an extension of the term of the credit. During the last thirty days of any such extension the department will draw on the letter of credit if the owner or operator has failed to provide alternate financial assurance as specified in this section and obtain written approval of such assurance from the department. j. The department will return the letter of credit to the issuing institution for termination when: (1) An owner or operator substitutes alternate financial assurance as specified in this section; or (2) The department releases the owner or operator from the requirements of this section in accordance with subsection 9. 4. Insurance. a An owner or operator may satisfy the requirements of this section by obtaining insurance that conforms to the requirements of this subsection and submitting a certificate of such insurance to the department. At a minimum, the insurer must be licensed to transact the business of insurance in this state or eligible to provide insurance as an excess or surplus lines insurer, in one or more states. b. The wording of the certificate of insurance must be identical to the wording specified in subsection 4 of section 33.1-24-02-42. c. The insurance policy must be issued for a face amount at least equal to the current cost estimate, except as provided in subsection 6. The term "face amount" means the total amount the insurer is obligated to pay under the policy. Actual payments by the insurer will not change the face amount, although the insurer's future liability will be lowered by the amount of the payments. d. The insurance policy must guarantee funds will be available whenever needed to pay the cost of removal of all hazardous secondary materials from the unit, to pay the cost of decontamination of the unit, to pay the costs of the performance of activities required under section 33.1-24-05-59 through 33.1-24-05-69 or subsection 5 of section 33.1-24-06-16, as applicable, for the facilities covered by this policy. The policy also must guarantee once funds are needed, the insurer is responsible for paying out funds, up to an amount equal to the face amount of the policy, upon the direction of the department, to such party or parties as the department specifies. e. After beginning partial or final closure under sections 33.1-24-05-59 through 33.1-24-05-69 or subsection 5 of section 33.1-24-06-16, as applicable, an owner or operator or any other authorized person may request reimbursements for closure expenditures by submitting itemized bills to the department. The owner or operator may request reimbursements only if the remaining value of the policy is sufficient to cover the maximum costs of closing the facility over its remaining operating life. Within sixty days after receiving bills for closure activities, the department will instruct the insurer to make reimbursements in such amounts as the department specifies in writing if the department determines that the expenditures are in accordance with the approved plan or otherwise justified. If the department has reason to believe the maximum cost over the remaining life of the facility will be significantly greater than the face amount of the policy, the department may withhold reimbursement of such amounts as the department deems prudent until the department determines, in accordance with subsection 8, the owner or operator is no longer required to maintain financial assurance for the particular facility. If the department does not instruct the insurer to make such reimbursements, the department will provide to the owner or operator a detailed written statement of reasons. f. The owner or operator shall maintain the policy in full force and effect until the department consents to termination of the policy by the owner or operator as specified in subdivision j of subsection 9. Failure to pay the premium, without substitution of alternate financial assurance as specified in this section, constitutes a significant violation of this chapter warranting such remedy as the department deems necessary. Such violation is deemed to begin upon receipt by the department of a notice of future cancellation, termination, or failure to renew due to nonpayment of the premium, rather than upon the date of expiration. g. Each policy must contain a provision allowing assignment of the policy to a successor owner or operator. Such assignment may be conditional upon consent of the insurer, provided such consent is not unreasonably refused. h. The policy must provide that the insurer may not cancel, terminate, or fail to renew the policy except for failure to pay the premium. The automatic renewal of the policy must, at a minimum, provide the insured with the option of renewal at the face amount of the expiring policy. If there is a failure to pay the premium, the insurer may elect to cancel, terminate, or fail to renew the policy by sending notice by certified mail to the owner or operator and the department. Cancellation, termination, or failure to renew may not occur, however, during the one hundred twenty days beginning with the date of receipt of the notice by both the department and the owner or operator, as evidenced by the return receipts. Cancellation, termination, or failure to renew may not occur and the policy will remain in full force and effect if on or before the date of expiration: (1) The department deems the facility abandoned; (2) Conditional exclusion or interim status is lost, terminated, or revoked; (3) Closure is ordered by the department or a state court or other court of competent jurisdiction; (4) The owner or operator is named as debtor in a voluntary or involuntary proceeding under United States Code title 11 (bankruptcy); or (5) The premium due is paid. i. Whenever the current cost estimate increases to an amount greater than the face amount of the policy, the owner or operator, within sixty days after the increase, shall either cause the face amount to be increased to an amount at least equal to the current cost estimate and submit evidence of such increase to the department, or obtain other financial assurance as specified in this section to cover the increase. Whenever the current cost estimate decreases, the face amount may be reduced to the amount of the current cost estimate following written approval by the department. j. The department will give written consent to the owner or operator that the department may terminate the insurance policy when: (1) An owner or operator substitutes alternate financial assurance as specified in this section; or (2) The department releases the owner or operator from the requirements of this section in accordance with subsection 9. 5. Financial test and corporate guarantee. a. An owner or operator may satisfy the requirements of this section by demonstrating that the owner or operator passes a financial test as specified in this subsection. To pass this test the owner or operator must meet the criteria of either paragraphs 1 or 2: (1) The owner or operator shall have: (a) Two of the following three ratios: A ratio of total liabilities to net worth less than two; a ratio of the sum of net income plus depreciation, depletion, and amortization to total liabilities greater than one-tenth; and a ratio of current assets to current liabilities greater than one and five-tenths; (b) Net working capital and tangible net worth each at least six times the sum of the current cost estimates and the current plugging and abandonment cost estimates; (c) Tangible net worth of at least ten million dollars; and (d) Assets located in the United States amounting to at least ninety percent of total assets or at least six times the sum of the current cost estimates and the current plugging and abandonment cost estimates. (2) The owner or operator shall have: (a) A current rating for the owner's or operator's most recent bond issuance of AAA, AA, A, or BBB as issued by Standard and Poor's or Aaa, Aa, A, or Baa as issued by Moody's; (b) Tangible net worth at least six times the sum of the current cost estimates and the current plugging and abandonment cost estimates; (c) Tangible net worth of at least ten million dollars; and (d) Assets located in the United States amounting to at least ninety percent of total assets or at least six times the sum of the current cost estimates and the current plugging and abandonment cost estimates. b. The phrase "current cost estimates" as used in subdivision a refers to the cost estimates required to be shown in paragraphs 1 through 4 of the letter from the owner's or operator's chief financial officer (subsection 5 of section 33.1-24-02-42). The phrase "current plugging and abandonment cost estimates" as used in subdivision a refers to the cost estimates required to be shown in paragraphs 1 through 4 of the letter from the owner's or operator's chief financial officer (40 CFR 144.70(f)). c. To demonstrate the owner or operator meets this test, the owner or operator shall submit the following items to the department: (1) A letter signed by the owner's or operator's chief financial officer and worded as specified in subsection 5 of section 33.1-24-02-42; (2) A copy of the independent certified public accountant's report on examination of the owner's or operator's financial statements for the latest completed fiscal year; and (3) If the chief financial officer's letter providing evidence of financial assurance includes financial data showing the owner or operator satisfies paragraph 1 of subdivision a which is different from the data in the audited financial statements referred to in paragraph 2 or any other audited financial statement or data filed with the United States securities and exchange commission, a special report from the owner's or operator's independent certified public accountant to the owner or operator is required. The special report must be based upon an agreed upon procedures engagement in accordance with professional auditing standards and shall describe the procedures performed in comparing the data in the chief financial officer's letter derived from the independently audited, year-end financial statements for the latest fiscal year with the amounts in such financial statements, the findings of the comparison, and the reasons for any differences. d. The owner or operator may obtain an extension of the time allowed for submission of the documents specified in subdivision c if the fiscal year of the owner or operator ends during the ninety days prior to the effective date of this section and if the year end financial statements for that fiscal year will be audited by an independent certified public accountant. The extension will end no later than ninety days after the end of the owner's or operator's fiscal year. To obtain the extension, the owner's or operator's chief financial officer shall send, by the effective date of this section, a letter to the department. This letter from the chief financial officer must: (1) Request the extension; (2) Certify that the owner or operator has grounds to believe that the owner or operator meets the criteria of the financial test; (3) Specify for each facility to be covered by the test the identification number (if any issued), name, address, and current cost estimates to be covered by the test; (4) Specify the date ending the owner's or operator's last complete fiscal year before the effective date of this section; (5) Specify the date, no later than ninety days after the end of such fiscal year, when the owner or operator will submit the documents specified in subdivision c; and (6) Certify that the year-end financial statements of the owner or operator for such fiscal year will be audited by an independent certified public accountant. e. After the initial submission of items specified in subdivision c, the owner or operator shall send updated information to the department within ninety days after the close of each succeeding fiscal year. This information must consist of all three items specified in subdivision c. f. If the owner or operator no longer meets the requirements of subdivision a, the owner or operator shall send notice to the department of intent to establish alternate financial assurance as specified in this section. The notice must be sent by certified mail within ninety days after the end of the fiscal year for which the year-end financial data show that the owner or operator no longer meets the requirements. The owner or operator shall provide the alternate financial assurance within one hundred twenty days after the end of such fiscal year. g. The department, based on a reasonable belief that the owner or operator may no longer meet the requirements of subdivision a, may require reports of financial condition at any time from the owner or operator in addition to those specified in subdivision c. If the department finds, on the basis of such reports or other information, that the owner or operator no longer meets the requirements of subdivision a, the owner or operator shall provide alternate financial assurance as specified in this section within thirty days after notification of such a finding. h. The department may disallow use of this test on the basis of qualifications in the opinion expressed by the independent certified public accountant in the independent certified public accountant's report on examination of the owner's or operator's financial statements (see paragraph 2 of subdivision c). An adverse opinion or a disclaimer of opinion will be cause for disallowance. The department will evaluate other qualifications on an individual basis. The owner or operator shall provide alternate financial assurance as specified in this section within thirty days after notification of the disallowance. i. The owner or operator is no longer required to submit the items specified in subdivision c if: (1) An owner or operator substitutes alternate financial assurance as specified in this section; or (2) The department releases the owner or operator from the requirements of this section in accordance with subsection 9. j. An owner or operator may meet the requirements of this section by obtaining a written guarantee. The guarantor must be the direct or higher-tier parent corporation of the owner or operator, a firm whose parent corporation is also the parent corporation of the owner or operator, or a firm with a "substantial business relationship" with the owner or operator. The guarantor shall meet the requirements for owners or operators in subdivisions a through h of subsection 5 and shall comply with the terms of the guarantee. The wording of the guarantee must be identical to the wording specified in subdivision a of subsection 7 of section 33.1-24-02-42. A certified copy of the guarantee must accompany the items sent to the department as specified in subdivision c. One of these items must be the letter from the guarantor's chief financial officer. If the guarantor's parent corporation is also the parent corporation of the owner or operator, the letter must describe the value received in consideration of the guarantee. If the guarantor is a firm with a "substantial business relationship" with the owner or operator, this letter must describe this "substantial business relationship" and the value received in consideration of the guarantee. The terms of the guarantee must provide that: (1) Following a determination by the department that the hazardous secondary materials at the owner's or operator's facility covered by this guarantee do not meet the conditions of the exclusion under subdivision y of subsection 1 of section 33.1-24-02-04, the guarantor will dispose of any hazardous secondary material as hazardous waste and close the facility in accordance with closure requirements found in sections 33.1-24-05-59 through 33.1-24-05-69 or subsection 5 of section 33.1-24-06-16, as applicable, or establish a trust fund as specified in subsection 1 in the name of the owner or operator in the amount of the current cost estimate. (2) The corporate guarantee will remain in force unless the guarantor sends notice of cancellation by certified mail to the owner or operator and to the department. Cancellation may not occur, however, during the one hundred twenty days beginning on the date of receipt of the notice of cancellation by both the owner or operator and the department, as evidenced by the return receipts. (3) If the owner or operator fails to provide alternate financial assurance as specified in this section and obtain the written approval of such alternate assurance from the department within ninety days after receipt by both the owner or operator and the department of a notice of cancellation of the corporate guarantee from the guarantor, the guarantor will provide such alternate financial assurance in the name of the owner or operator. 6. Use of multiple financial mechanisms. An owner or operator may satisfy the requirements of this section by establishing more than one financial mechanism per facility. These mechanisms are limited to trust funds, surety bonds, letters of credit, and insurance. The mechanisms must be as specified in subsections 1 through 4, respectively, except that it is the combination of mechanisms, rather than the single mechanism, which must provide financial assurance for an amount at least equal to the current cost estimate. If an owner or operator uses a trust fund in combination with a surety bond or a letter of credit, the owner or operator may use the trust fund as the standby trust fund for the other mechanisms. A single standby trust fund may be established for two or more mechanisms. The department may use any or all of the mechanisms to provide for the facility. 7. Use of a financial mechanism for multiple facilities. An owner or operator may use a financial assurance mechanism specified in this section to meet the requirements of this section for more than one facility. Evidence of financial assurance submitted to the department must include a list showing, for each facility, the identification number (if any issued), name, address, and the amount of funds assured by the mechanism. If the facilities covered by the mechanism are in more than one state, identical evidence of financial assurance must be submitted to and maintained with the department and other state's agencies that regulate reclamation and intermediate facilities managing hazardous secondary materials of all such states. The amount of funds available through the mechanism must be no less than the sum of funds that would be available if a separate mechanism had been established and maintained for each facility. In directing funds available through the mechanism for any of the facilities covered by the mechanism, the department may direct only the amount of funds designated for that facility, unless the owner or operator agrees to the use of additional funds available under the mechanism. 8. Removal and decontamination plan for release. a. An owner or operator of a reclamation facility or an intermediate facility who wishes to be released from the owner's or operator's financial assurance obligations under subparagraph f of paragraph 6 of subdivision y of subsection 1 of section 33.1-24-02-04 shall submit a plan for removing all hazardous secondary material residues to the department at least one hundred eighty days prior to the date on which the owner or operator expects to cease to operate under the exclusion. b. The plan must include, at least: (1) For each hazardous secondary materials storage unit subject to financial assurance requirements under subparagraph f of paragraph 6 of subdivision y of subsection 1 of section 33.1-24-02-04, a description of how all excluded hazardous secondary materials will be recycled or sent for recycling, and how all residues, contaminated containment systems (such as liners), contaminated soils, subsoils, structures, and equipment will be removed or decontaminated as necessary to protect human health and the environment; (2) A detailed description of the steps necessary to remove or decontaminate all hazardous secondary material residues and contaminated containment system components, equipment, structures, and soils including, procedures for cleaning equipment and removing contaminated soils, methods for sampling and testing surrounding soils, and criteria for determining the extent of decontamination necessary to protect human health and the environment; (3) A detailed description of any other activities necessary to protect human health and the environment during this time frame, including, leachate collection, run-on and runoff control; and (4) A schedule for conducting the activities described which, at a minimum, includes the total time required to remove all excluded hazardous secondary materials for recycling and decontaminate all units subject to financial assurance under subparagraph f of paragraph 6 of subdivision y of subsection 1 of section 33.1-24-02-04 and the time required for intervening activities which will allow tracking of the progress of decontamination. c. The department will provide the owner or operator and the public, through a newspaper notice, the opportunity to submit written comments on the plan and request modifications to the plan no later than thirty days from the date of the notice. The department will also, in response to a request or at the department's discretion, hold a public hearing whenever such a hearing might clarify one or more issues concerning the plan. The department will give public notice of the hearing at least thirty days before it occurs. (Public notice of the hearing may be given at the same time as notice of the opportunity for the public to submit written comments, and the two notices may be combined.) The department will approve, modify, or disapprove the plan within ninety days of its receipt. If the department does not approve the plan, the department shall provide the owner or operator with a detailed written statement of reasons for the refusal and the owner or operator must modify the plan or submit a new plan for approval within thirty days after receiving such written statement. The department will approve or modify this plan in writing within sixty days. If the department modifies the plan, this modified plan becomes the approved plan. The department shall assure the approved plan is consistent with this subsection. A copy of the modified plan with a detailed statement of reasons for the modifications must be mailed to the owner or operator. d. Within sixty days of completion of the activities described for each hazardous secondary materials management unit, the owner or operator shall submit to the department, by registered mail, a certification that all hazardous secondary materials have been removed from the unit and the unit has been decontaminated in accordance with the specifications in the approved plan. The certification must be signed by the owner or operator and by a qualified professional engineer. Documentation supporting the professional engineer's certification must be furnished to the department, upon request, until the department releases the owner or operator from the financial assurance requirements for subparagraph f of paragraph 6 of subdivision y of subsection 1 of section 33.1-24-02-04. 9. Release of the owner or operator from the requirements of this section. Within sixty days after receiving certifications from the owner or operator and a qualified professional engineer that all hazardous secondary materials have been removed from the facility or a unit at the facility and the facility or a unit has been decontaminated in accordance with the approved plan per subsection 8, the department will notify the owner or operator in writing that the owner or operator is no longer required under subparagraph f of paragraph 6 of subdivision y of subsection 1 of section 33.1-24-02-04 to maintain financial assurance for that facility or a unit at the facility, unless the department has reason to believe that all hazardous secondary materials have not been removed from the facility or unit at a facility or that the facility or unit has not been decontaminated in accordance with the approved plan. The department shall provide the owner or operator a detailed written statement of any such reason to believe that all hazardous secondary materials have not been removed from the unit or that the unit has not been decontaminated in accordance with the approved plan.