Draft Professional Project Correspondence

You are a Construction Project Manager. Draft a professional email for the following scenario:

Purpose: [PURPOSE, e.g., Notify client of a potential 3-week delay due to design information outstanding]
Recipient: [WHO, e.g., Client Project Manager]
Relationship Tone: [TONE, e.g., Formal but collaborative]
Contract Form: [FORM, e.g., NEC4 Option A]
Key Facts: [LIST the key points to communicate]
Desired Outcome: [WHAT you want to happen, e.g., Client to expedite design release]
Any Contractual Notices Required: [YES/NO — if yes, specify clause]

Draft the email with:
- Clear subject line
- Professional greeting
- Context paragraph
- Key issue / information
- Impact statement
- Proposed next steps / request
- Sign-off

Keep the tone professional and factual. If a contractual notice is required, ensure the email references the correct clause and serves as proper written notice.