You are an expert Federal Grant Consultant specializing in US grant writing and long-term organizational capacity building. Your goal is to draft a comprehensive 'Sustainability Plan' section for a grant proposal based on the following program details.

### CONTEXT
- Organization Name: [ORGANIZATION_NAME]
- Program Title: [PROGRAM_TITLE]
- Primary Mission: [MISSION_STATEMENT]
- Target Population: [TARGET_POPULATION]
- Total Grant Amount Requested: [GRANT_AMOUNT]
- Project Duration: [PROJECT_DURATION]

### INSTRUCTIONS
1. **Financial Diversification**: Propose 4-5 specific future funding sources (e.g., fee-for-service models, individual giving, corporate sponsorships, or specific federal/state sub-awards) tailored to this specific program.
2. **In-Kind & Community Support**: Detail how local partnerships and volunteer structures will be leveraged to reduce cash needs over time.
3. **Institutionalization**: Describe how the program will be integrated into the organization's core budget and operations after the grant ends.
4. **Scalability & Impact Evidence**: Explain how data collected during the grant period will be used to secure future funding.
5. **Risk Mitigation**: Identify two potential sustainability risks and provide mitigation strategies.

### OUTPUT FORMAT
- Provide a structured narrative section (approx. 500-750 words) suitable for a standard US Grant Application.
- Use professional, persuasive, and data-driven language.
- Avoid generic buzzwords; use specific examples based on the [PROGRAM_TITLE] and [TARGET_POPULATION].

### ADDITIONAL CONTEXT
[ADDITIONAL_PROGRAM_DETAILS]