(a) General rule.--A person operating a storage reservoir which underlies or is within 2,000 linear feet of a coal mine operating in a coal seam that extends over the storage reservoir or the reservoir protective area shall:

(1) Use every known reasonable method for discovering and locating all wells which have or may have been drilled into or through the storage stratum in the acreage lying within the outside coal boundaries of the operating coal mine overlying the storage reservoir or the reservoir protective area.

(2) Plug or recondition, as provided by section 3220 (relating to plugging requirements) and subsection (e), all known wells, except to the extent provided in subsections (e), (f), (g) and (h), drilled into or through the storage stratum and located within the portion of the acreage of the operating coal mine overlying the storage reservoir or the reservoir protective area. If an objection is raised as to use of a well as a storage well and, after a conference under section 3251 (relating to conferences), it is determined by the department, taking into account all circumstances and conditions, that the well should not be used as a storage well, the well shall be plugged unless, in the opinion of the storage operator, the well may be used as a storage well in the future, in which case, upon approval of the department after taking into account all circumstances and conditions, the storage operator may recondition and inactivate the well rather than plug it.

(3) The requirements of paragraph (2) shall be deemed to have been fully complied with if, as the operating coal mine is extended, all wells which from time to time come within the acreage described in paragraph (2) are reconditioned or plugged as provided in section 3220 and subsection (e) or (f) so that, by the time the coal mine has reached a point within 2,000 linear feet of the wells, they will have been reconditioned or plugged in accordance with section 3220 and subsection (e) or (f).

(b) Verified statement.--A person operating a storage reservoir referred to in subsection (a) shall file with the department and furnish a copy to the person operating the affected operating coal mine a verified statement setting forth:

(1) That the map and any supplemental maps required by section 3231(a) (relating to reporting requirements for gas storage operations) have been prepared and filed in accordance with section 3231.

(2) A detailed explanation of what the storage operator has done to comply with the requirements of subsection (a)(1) and (2) and the results of those actions.

(3) Such additional efforts, if any, as the storage operator is making and intends to make to locate all wells.

(4) Any additional wells that are to be plugged or reconditioned to meet the requirements of subsection (a)(2).

(b.1) Order of department.--If the statement required under subsection (b) is not filed by the storage reservoir operator within the time specified by this chapter or the regulations of the department, the department may order the operator to file the statement.

(c) Procedure.--Within 120 days after receipt of a statement required by this section, the department may direct that a conference be held in accordance with section 3251 to determine whether the requirements of section 3231 and subsection (a) have been fully met. At the conference, if any person believes the requirements have not been fully met, the parties shall attempt to agree on additional actions to be taken and the time for completion, subject to approval of the department. If an agreement cannot be reached, the department shall make a determination and, if the department determines any requirements have not been met, the department shall issue an order specifying in detail the extent to which the requirements have not been met and the actions which the storage operator must complete to meet the requirements. The order shall grant as much time as is reasonably necessary to fully comply. If the storage operator encounters conditions not known to exist at the time of issuance of the order and which materially affect the validity of the order or the ability of the storage operator to comply with it, the storage operator may apply for a rehearing or modification of the order.

(d) Notification.--If, in complying with subsection (a), a storage operator, after filing the statement provided for in subsection (b), plugs or reconditions a well, the storage operator shall notify the department and the coal operator affected, in writing, setting forth facts indicating the manner in which the plugging or reconditioning was done. Upon receipt of the notification, the coal operator or department may request a conference under section 3251.

(e) Plugging wells.--In order to meet the requirements of subsection (a), wells which are to be plugged shall be plugged in the manner specified in regulations promulgated under section 3211 (relating to well permits). When a well located within the storage reservoir or the reservoir protective area has been plugged prior to April 18, 1985, and, on the basis of the data information and other evidence submitted to the department, it is determined that the plugging was done in the manner required by section 3220, or in a manner approved as an alternative method in accordance with section 3221 (relating to alternative methods), and the plugging is still sufficiently effective to meet the requirements of this chapter, the requirements of subsection (a) as to plugging the well shall be considered to have been fully satisfied.

(f) Reconditioned wells.--The following shall apply:

(1) In order to comply with subsection (a), unless the department by regulation specifies a different procedure, wells which are to be reconditioned shall be cleaned out from the surface through the storage horizon, and the following casing strings shall be pulled and replaced with new casing, using the procedure applicable to drilling a new well under this chapter:

(i) the producing casing;

(ii) the largest diameter casing passing through the lowest workable coal seam unless it extends at least 25 feet below the bottom of the coal seam and is determined to be in good physical condition, but the storage operator may, instead of replacing the largest diameter casing, replace the next largest casing string if the casing string extends at least 25 feet below the lowest workable coal seam; and

(iii) casing strings determined not to be in good physical condition.

(2) In the case of a well to be used for gas storage, the annular space between each string of casing and the annular space behind the largest diameter casing, to the extent possible, shall be filled to the surface with cement or bentonitic mud or an equally nonporous material approved by the department under section 3221.

(3) At least 15 days before a well is to be reconditioned, the storage operator shall give notice to the department and the coal operator, lessee or owner, setting forth the manner in which reconditioning is planned and pertinent data known to the storage operator which will indicate the current condition of the well, along with at least 72 hours' notice of the date and time when reconditioning will begin. The coal operator, lessee or owner shall have the right to file, within ten days after receipt of the notice, objections to the plan of reconditioning as submitted by the storage operator. If no objections are filed and none are raised by the department within ten days, the storage operator may proceed with reconditioning in accordance with the plan as submitted. If an objection is filed or made by the department, the department shall fix a time and place for a conference under section 3251, at which conference the storage operator and the person having objections shall attempt to agree on a plan of reconditioning that meets the requirements of this section. If no agreement is reached, the department shall, by an appropriate order, determine whether the plan as submitted meets the requirements of this section or what changes should be made to meet the requirements. If, in reconditioning the well in accordance with the plan, physical conditions are encountered which justify or necessitate a change in the plan, the storage operator or coal operator may request that the plan be changed. If the parties cannot agree on a change, the department shall arrange for a conference to determine the matter in the same manner as set forth in connection with original objections to the plan.

(4) Application may be made to the department in the manner prescribed in section 3221 for approval of an alternative method of reconditioning a well. When a well located within the storage reservoir or the reservoir protective area has been reconditioned or drilled and equipped prior to April 18, 1985, and, on the basis of the data, information and other evidence submitted to the department, the obligations imposed by subsection (a) as to reconditioning the well shall be considered to be fully satisfied if it is determined that reconditioning or previous drilling and equipping:

(i) was done in the manner required in this subsection, or in regulations promulgated hereunder, or in a manner approved as an alternative method in accordance with section 3221; or

(ii) is still sufficiently effective to meet the requirements of this chapter.

(5) If a well requires emergency repairs, this subsection shall not be construed to require the storage operator to give the notices specified herein before making the repairs.

(g) Producing wells.--If a well located within the reservoir protective area is a producing well in a stratum below the storage stratum, the obligations imposed by subsection (a) shall not begin until the well ceases to be a producing well.

(h) Certain other wells.--If a well within a storage reservoir or reservoir protective area penetrates the storage stratum but does not penetrate the coal seam being mined by an operating coal mine, the department may, upon application of the operator of the storage reservoir, exempt the well from the requirements of this section. Either party affected may request a conference under section 3251 with respect to exemption of a well covered by this subsection.

(i) Plugging limitation.--In fulfilling the requirements of subsection (a)(2) with respect to a well within the reservoir protective area, the storage operator shall not be required to plug or recondition the well until the storage operator has received from the coal operator written notice that the mine workings will, within the period stated in the notice, be within 2,000 linear feet of the well. Upon the receipt of the notice, the storage operator shall use due diligence to complete the plugging or reconditioning of the well in accordance with the requirements of this section and section 3220. If the mine workings do not, within a period of three years after the well has been plugged, come within 2,000 linear feet of the well, the coal operator shall reimburse the storage operator for the cost of plugging, provided that the well is still within the reservoir protective area as of that time.

(j) Retreat mining.--If retreat mining approaches a point where, within 90 days, it is expected that the retreat work will be at the location of the pillar surrounding an active storage well, the coal operator shall give written notice to the storage operator, and by agreement, the parties shall determine whether it is necessary or advisable to effectively and temporarily inactivate the well. The well shall not be reactivated until a reasonable period, determined by the parties, has elapsed. If the parties cannot agree as required by this subsection, the matter shall be submitted to the department for resolution. The number of wells required to be temporarily inactivated during the retreat period shall not be of a number that materially affects efficient operation of the storage pool, except that this provision shall not preclude temporary inactivation of a particular well if the practical effect of inactivating it is to render the pool temporarily inoperative.

(k) Exceptions.--The requirements of subsections (a), (l) and (m) shall not apply to injection of gas into a stratum when the whole purpose of injection, referred to in this subsection as testing, is to determine whether the stratum is suitable for storage purposes. Testing shall be conducted only in compliance with the following requirements:

(1) The person testing or proposing to test shall comply with all provisions and requirements of section 3231 and verify the statement required to be filed by that section.

(2) If any part of the proposed storage reservoir is under or within 2,000 linear feet of an operating coal mine which is operating in a coal seam that extends over the proposed storage reservoir or the reservoir protective area, the storage operator shall give at least six months' written notice to the department and coal operator of the fact that injection of gas for testing purposes is proposed.

(3) The coal operator affected may at any time file objections with the department, whereupon the department shall fix a time and place for a conference under section 3251, not more than ten days from the date of the notice to the storage operator. At the conference, the storage operator and the objecting party shall attempt to agree, subject to approval of the department, on the questions involved. If an agreement cannot be reached, the department may issue an appropriate order.

(4) If at any time a proposed storage reservoir being tested comes under or within 2,000 linear feet of an operating coal mine because of extension of the storage reservoir being tested or because of extension or establishment or reestablishment of the operating coal mine, the requirements of this subsection shall immediately become applicable to the testing.

(l) Storage reservoirs near operating coal mines.--A person who proposes to establish a storage reservoir under or within 2,000 linear feet of a coal mine operating in a coal seam that extends over the storage reservoir or the reservoir protective area shall, prior to establishing the reservoir, and in addition to complying with section 3231 and subsection (a), file the verified statement required by subsection (b) and fully comply with any order of the department in the manner provided under subsection (b) or (c) before commencing operation of the storage reservoir. After the person proposing to operate the storage reservoir complies with the requirements of this subsection and commences operations, the person shall continue to be subject to all provisions of this chapter.

(m) Gas storage reservoirs.--If a gas storage reservoir is in operation on April 18, 1985, and at any time thereafter it is under or within 2,000 linear feet of an operating coal mine, or if a gas storage reservoir is put in operation after April 18, 1985, and at any time after storage operations begin it is under or within 2,000 linear feet of an operating coal mine, the storage operator shall comply with all of the provisions of this section, except that:

(1) the time for filing the verified statement under subsection (b) shall be 60 days after the date stated in the notice filed by the coal operator under section 3232(d) and (e) (relating to reporting requirements for coal mining operations);

(2) the coal operator shall give notice of the delay to the department;

(3) the department shall, upon the request of the storage operator, extend the time for filing the statement by the additional time which will be required to extend or establish or reestablish the operating coal mine to a point within 2,000 linear feet of the reservoir;

(4) the verified statement shall also indicate that the map referred to in section 3231(a) has been currently amended as of the time of the filing of the statement; and

(5) the person operating the storage reservoir shall continue to be subject to all of the provisions of this chapter.

(n) Failure to comply with order.--If, in any proceeding under this chapter, the department determines that an operator of a storage reservoir has failed to comply with a lawful order issued under this chapter, the department may require the storage operator to suspend operation of the reservoir and withdraw the gas from it until the violation is remedied, in which case the storage operator, limited by due diligence insofar as existing facilities utilized to remove gas from the reservoir will permit, shall:

(1) if possible, remove the amount required by the department to be removed; or

(2) in any event, remove the maximum amount which can be withdrawn in accordance with recognized engineering and operating procedures.

(o) Prevention of escape of gas.--In addition to initial compliance with other provisions of this chapter and lawful orders issued under this chapter, it shall be the duty, at all times, of a person owning or operating a storage reservoir subject to this chapter to keep all wells drilled into or through the storage stratum in a condition, and operate the wells in a manner, which is designed to prevent the escape of gas out of the storage reservoir and its facilities, and to operate and maintain the storage reservoir and its facilities in the manner prescribed by regulation of the department and at a pressure that will prevent gas from escaping from the reservoir or its facilities. This duty shall not be construed to include inability to prevent the escape of gas when escape results from an act of God or a person not under the control of the storage operator, except that this exception does not apply to a well which the storage operator has failed to locate and make known to the department. If an escape of gas results from an act of God or a person not under the control of the storage operator, the storage operator shall be under the duty to take any action reasonably necessary to prevent the further escape of gas out of the storage reservoir and its facilities.