Public Announcement No. 11 Nankai Trough Great Earthquake Old Mineral Mining Area Disaster Prevention Measures Project Phase 1 and Phase 4 Disaster Prevention Construction

Public Announcement No. 11 Nankai Trough Great Earthquake Old Mineral Mining Area Disaster Prevention Measures Project Phase 1 and Phase 4 Disaster Prevention Construction Announcement No. 11 of Mitake Town Contract. The following construction work will be subject to a conditional open competitive tender with post-qualification. In accordance with the provisions of Article 2 and Article 3 of the Mitake Town Contract Regulations (1964 Mitake Town Ordinance No. 7), the following is announced. May 13, 2026, Nobuyuki Watanabe, Mayor of Mitake Town. 1. Matters Related to Tendering (1) Specification Number: Mi-A-Ko No. 8-1 (2) Project Name: Nankai Trough Great Earthquake Old Mineral Mining Area Disaster Prevention Measures Project Phase 1 and Phase 4 Disaster Prevention Construction (3) Location of Performance: Within Mitake Town, Mitake (4) Construction Outline: [Basic Design: Limited Double-Layer End Filling Method] Void Filling Construction (Phase 1) (1 set) (Countermeasure Area: A=10,400m2) Drilling Work: Filling Holes N=120, Investigation Holes N=7 Filling Work: End Filling V=932m3, Second End Filling V=879m3, Intermediate Filling V=4,834m3, Temporary Filling Equipment Work (1 set) Void Filling Construction (Phase 4) (1 set) (Countermeasure Area: Upper Layer: A=38,800m2, Lower Layer: 20,600m2) Drilling Work: Filling Holes N=520, Investigation Holes N=21 Filling Work: End Filling V=3,670m3, Second End Filling V=3,624m3, Intermediate Filling V=51,128m3, Temporary Filling Equipment Work (1 set) [Reference Design: Fluidization Treatment Method] Void Filling Construction (Phase 1) (1 set) (Countermeasure Area: 10,400m2) Drilling Work: Filling Holes N=82, Investigation Holes N=6 Filling Work: End Filling Material B V=2,115m3, Intermediate Filling Material V=4,532m3, Temporary Filling Equipment Work (1 set) Void Filling Construction (Phase 4) (1 set) (Countermeasure Area: Upper Layer: A=38,800m2, Lower Layer: 20,600m2) Drilling Work: Filling Holes N=366, Investigation Holes N=17 Filling Work: End Filling Material B V=8,237m3, Intermediate Filling Material V=50,280m3, Temporary Filling Equipment Work (1 set) (5) Performance Period: From the date of contract signing to July 31, 2028 (6) Estimated Price: Post-publicized (7) Low Bid Investigation Price: Yes (8) Disqualification Criteria: Yes (9) Minimum Reserve Price: None (10) Submission of Breakdown: Required *Please note that if a breakdown is not submitted, the bid will be considered invalid. (11) Bid Bond: Exempt (12) Bidding Method: [Electronic Bidding] However, those who find it difficult to use the electronic bidding system may submit a written bid with the consent of the contracting party. (13) Contract Method: In principle, this contract will be concluded electronically. (14) Margin Period Setting: Not applicable (15) Provisional Contract: Yes 2. Bidding Qualification Requirements: This construction work will be an open competitive tender by a single contractor or a special construction joint venture (hereinafter referred to as "Joint Venture"). i) Qualifications required for a single contractor to participate in this tender are as follows: Required Construction Industry Permit: Civil Engineering Works and Overall Score: Industry: Construction Contracts [Civil Engineering Works] - Must be registered in the Mitake Town Competitive Bidding Participant Qualification List for the above business items. - On the date of this announcement, the overall evaluation score for each of the following regional classifications must be met for the above industry as stipulated in the Construction Industry Act (1949 Law No. 100). Within Town A: 750 points or more, Within Town B: 750 points or more, Kamo Area: 1,000 points or more, Within Prefecture: 1,200 points or more, Outside Prefecture: 1,200 points or more. Construction Experience Requirements: Must have at least one construction experience of filling underground cavities (1,000m3 or more) as the prime contractor, either as a single company or a joint venture, for projects ordered by the national government, special corporations, local governments, local public corporations, public interest corporations, or land readjustment associations. However, experience as a member of a joint venture is limited to cases where the investment ratio is 40% or more. *Underground cavities refer to artificially created cavities such as lignite mining cavities and special underground tunnels. Site Engineer Requirements: Must be able to appropriately assign a chief engineer or supervising engineer to the construction site in accordance with the provisions of the Construction Industry Act. Business Office Location Requirements: Must have a business office registered in Gifu Prefecture, Aichi Prefecture, or Mie Prefecture in the Mitake Town Competitive Bidding Participant Qualification List (Construction Contracts). Consignee of Design Work, etc.: Not applicable. Other Conditions: (1) The conclusion of the contract for this tender shall be made only if the application for plan change under Article 8, Paragraph 2 of the "Gifu Prefecture Nankai Trough Great Earthquake Old Mineral Mining Area Disaster Prevention Construction Subsidy (Ground Weakness Survey and Disaster Prevention Construction Portion)" Grant Guidelines is approved, and the resolution of the assembly is obtained in accordance with Article 96, Paragraph 1, Item 5 of the Local Autonomy Act (1947 Law No. 67) and Article 2 of the Ordinance on Contracts and Acquisition or Disposal of Property Subject to Assembly Resolution by Mitake Town (1964 Ordinance No. 6). Both the contracting party and the contractor may terminate the provisional contract by mutual agreement if the conclusion of the main contract is not expected even after a considerable period has passed since the provisional contract. Furthermore, the town shall not be liable for any damages incurred by the contractor due to the above. (2) Must be able to perform the matters specified in the specifications and special specifications. (3) Must not fall under the provisions of Article 167-4 of the Local Autonomy Act Enforcement Order (1947 Cabinet Order No. 16). (4) Must not be within the period of qualification suspension based on the Mitake Town Competitive Bidding Qualification Suspension Measures Ordinance (1992 Administrative Order Ko No. 8). (5) Must be able to appropriately assign engineers for this work in accordance with the provisions of the Construction Industry Act. (6) Must not be in arrears with corporate inhabitant tax or other local taxes. (7) Must not have filed for commencement of rehabilitation proceedings under Article 17, Paragraph 1 of the Corporate Rehabilitation Act (2002 Law No. 154), nor have had such proceedings commenced against them under Paragraph 2 of the same article. (8) Must not have filed for commencement of rehabilitation proceedings under Article 21, Paragraph 1 of the Civil Rehabilitation Act (1999 Law No. 225), nor have had such proceedings commenced against them under Paragraph 2 of the same article. (9) Must not have been suspended from bidding qualifications by Mitake Town based on the "Measures Ordinance for the Exclusion of Violent Groups from Contracts by Mitake Town (2010 Administrative Order Ko No. 41)" during the period from the application deadline for confirmation of bidding qualifications to the date of bidding, or must not fall under the criteria for measures listed in the appendix of the same ordinance. Qualification Confirmation Documents (for successful bidder only): The successful bidder must submit the following documents by the deadline: - Application for Confirmation of Eligibility for Conditional Open Competitive Bidding with Post-Qualification - Attached documents - Statement of Business Office Status (required only when applying from a business office not registered) - Statement of Construction Experience meeting the bidding qualification requirements ii) Qualifications required for a joint venture to participate in this tender are as follows: Bidding Qualification Requirements: The number of members in the joint venture shall be two or three, and the formation shall be voluntary. The investment ratio of each member shall be 30% or more for two members, and 20% or more for three members. Required Construction Industry Permit: Civil Engineering Works and Overall Evaluation Score: Industry: Construction Contracts [Civil Engineering Works] - Must be registered in the Mitake Town Competitive Bidding Participant Qualification List for the above business items. - On the date of this announcement, the representative member (the one with the largest investment ratio among the members) and other members must meet the overall evaluation score for each of the following regional classifications as stipulated in the Construction Industry Act. Furthermore, must have been operating with a permit for the above industry for 3 years or more as stipulated in the same law. Within Town A: 750 points or more, Within Town B: 750 points or more, Kamo Area: 1,000 points or more, Within Prefecture: 1,200 points or more, Outside Prefecture: 1,200 points or more. Construction Experience Requirements: The representative member must have at least one construction experience of filling underground cavities (1,000m3 or more) as the prime contractor, either as a single company or a joint venture, for projects ordered by the national government, special corporations, local governments, local public corporations, public interest corporations, or land readjustment associations. However, experience as a member of a joint venture is limited to cases where the investment ratio is 40% or more. *Underground cavities refer to artificially created cavities such as lignite mining cavities and special underground tunnels. Site Engineer Requirements: The representative member must be able to appropriately assign a chief engineer or supervising engineer to the construction site in accordance with the provisions of the Construction Industry Act (1949 Law No. 100). Business Office Location Requirements: The representative member and other members must have a business office registered in Gifu Prefecture, Aichi Prefecture, or Mie Prefecture in the Mitake Town Competitive Bidding Participant Qualification List (Construction Contracts). Consignee of Design Work, etc.: Not applicable. Other Conditions: (1) The conclusion of the contract for this tender shall be made only if the application for plan change under Article 8, Paragraph 2 of the "Gifu Prefecture Nankai Trough Great Earthquake Old Mineral Mining Area Disaster Prevention Construction Subsidy (Ground Weakness Survey and Disaster Prevention Construction Portion)" Grant Guidelines is approved, and the resolution of the assembly is obtained in accordance with Article 96, Paragraph 1, Item 5 of the Local Autonomy Act (1947 Law No. 67) and Article 2 of the Ordinance on Contracts and Acquisition or Disposal of Property Subject to Assembly Resolution by Mitake Town (1964 Ordinance No. 6). Both the contracting party and the contractor may terminate the provisional contract by mutual agreement if the conclusion of the main contract is not expected even after a considerable period has passed since the provisional contract. Furthermore, the town shall not be liable for any damages incurred by the contractor due to the above. (2) Must be able to perform the matters specified in the specifications and special specifications. (3) Must not fall under the provisions of Article 167-4 of the Local Autonomy Act Enforcement Order (1947 Cabinet Order No. 16). (4) Must not be within the period of qualification suspension based on the Mitake Town Competitive Bidding Qualification Suspension Measures Ordinance (1992 Administrative Order Ko No. 8). (5) Must be able to appropriately assign engineers for this work in accordance with the provisions of the Construction Industry Act. (6) Must not be in arrears with corporate inhabitant tax or other local taxes. (7) Must not have filed for commencement of rehabilitation proceedings under Article 17, Paragraph 1 of the Corporate Rehabilitation Act (2002 Law No. 154), nor have had such proceedings commenced against them under Paragraph 2 of the same article. (8) Must not have filed for commencement of rehabilitation proceedings under Article 21, Paragraph 1 of the Civil Rehabilitation Act (1999 Law No. 225), nor have had such proceedings commenced against them under Paragraph 2 of the same article. (9) Must not have been suspended from bidding qualifications by Mitake Town based on the "Measures Ordinance for the Exclusion of Violent Groups from Contracts by Mitake Town (2010 Administrative Order Ko No. 41)" during the period from the application deadline for confirmation of bidding qualifications to the date of bidding, or must not fall under the criteria for measures listed in the appendix of the same ordinance. Qualification Confirmation Documents (for successful bidder only): The successful bidder must submit the following documents by the deadline: - Application for Confirmation of Eligibility for Conditional Open Competitive Bidding with Post-Qualification - Attached documents - Statement of Business Office Status (required only when applying from a business office not registered) - Statement of Construction Experience meeting the bidding qualification requirements 3. Department Information: Department Name: General Affairs Department, General Affairs Division, Finance Section, Mitake Town Tel: 0574-67-2111 (Ext. 2306) Address: 1239-1 Mitake, Mitake Town, Kamo District, 505-0192 Business Department: Mitake Town Construction Department, Lignite Mine Abandoned Pit Countermeasures Office Tel: 0574-67-2111 (Ext. 2232) 4. Bidding Schedule: Procedure Period/Deadline Method/Location: Design Document Browsing: May 13, 2026 (Wed) until award of contract, from 4:00 PM. Download from Mitake Town website or electronic bidding system. Inquiry Reception: May 13, 2026 (Wed) to May 19, 2026 (Tue) from 4:00 PM to 12:00 PM. Via input form on the website. Answer Document Browsing: As answers are provided, they will be sequentially posted on the Mitake Town website. Bid Participation Application: May 13, 2026 (Wed) to May 29, 2026 (Fri) from 4:00 PM to 4:00 PM. Application via electronic bidding system. - "Application for Participation in Conditional Open Competitive Bidding with Post-Qualification (Construction)" or - "Application for Participation in Conditional Open Competitive Bidding with Post-Qualification (Special Construction Joint Venture)" to be submitted. Qualification Confirmation: June 1, 2026 (Mon) from 9:00 AM. Via electronic bidding system. Bid Submission: June 3, 2026 (Wed) to June 4, 2026 (Thu) from 9:00 AM to 4:00 PM. Via electronic bidding system. Bid Opening: June 5, 2026 (Fri) from 10:30 AM. Via electronic bidding system. Submission of Qualification Confirmation Documents for Successful Bidder: June 9, 2026 (Tue) by 4:00 PM. To the bidding department by mail or in person. *For paper bids, all documents must be submitted in person only; submissions by mail or electronic transmission will not be accepted (period and date are the same). *Inquiries (Mitake Town HP > For Businesses > Bidding Information > How to Inquire about Bids) *Attendance at bid opening is not required, but please contact the bidding department in advance if you wish to attend. *The successful bidder will be notified by phone on the day of the bid opening. The results will generally be posted on the website the week after the bid opening. 5. Matters Related to Post-Qualification of Bidding Eligibility: (1) After the bid opening, the award decision will be suspended, and the bidder who submitted the lowest valid bid within the range of the estimated price and the low bid investigation price or minimum reserve price (hereinafter referred to as "successful bidder") will be required to submit documents necessary for confirming bidding eligibility (hereinafter referred to as "confirmation application documents, etc.") for qualification confirmation. (2) Confirmation application documents, etc., must be submitted to the contracting party by the specified deadline. (3) If a bidder who meets the bidding eligibility requirements no longer meets them by the date of the bid (bid opening), they shall not be allowed to participate in the bid. (4) Those wishing to withdraw their bid participation application must submit a written statement with reasons to the General Affairs Division of Mitake Town by the day before the bid opening date. 6. Margin Period Setting Construction: In the case of margin period setting construction, the following items shall apply. (1) This construction work is set with a margin period to ensure a smooth construction execution system for the contractor, allowing for preparation such as securing construction materials and labor in advance. The contractor can arbitrarily set the construction start date within the construction start deadline indicated by the contracting party. (2) The construction start date cannot be a holiday. A construction start date where the end of the construction period falls on a holiday cannot be set. (3) The contractor must notify the construction start date using the form specified by the contracting party within 3 days from the day after the award decision date. (4) A margin period does not require the assignment of a chief engineer or supervising engineer, or a site manager. (5) A margin period allows for the preparation of materials that are not brought to the site, but construction activities such as material delivery and installation of temporary structures must not be commenced. The preparation work to be carried out within the margin period shall be at the contractor's responsibility. (6) If the contract is concluded after the construction start deadline due to low bid price investigation, etc., a margin period cannot be set. 7. Other: (1) If bidding or bid opening cannot be conducted due to natural disasters or other unavoidable reasons, it will be canceled. Bidding may also be canceled if there is only one bidder. Damages in such cases...