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1. Previous Communications: Reference to prior attempts to resolve the issue, used when there has been documented communication

2. Cost Breakdown: Detailed breakdown of costs or damages, used when claiming specific monetary amounts

3. Safety Violations: Description of safety violations or hazards, used when safety issues are part of the complaint

4. Third-Party Expert Opinions: Reference to expert assessments or reports, used when technical issues need verification

5. Alternative Resolution Options: Proposed alternative solutions or compromise options, used when willing to negotiate

6. Insurance Claims: Reference to relevant insurance policies and claims, used when insurance is involved

1. Contract Documents: Copy of the original contract and any amendments

2. Project Timeline: Documentation of agreed-upon and actual project timelines

3. Payment Records: Proof of payments made and outstanding amounts

4. Photographic Evidence: Photos documenting issues or incomplete work

5. Communication Records: Copies of relevant emails, letters, or other correspondence

6. Expert Reports: Technical assessments or third-party evaluations

7. Certification Documents: Copies of relevant licenses, permits, and certifications