The completion of a log is essential for...

• A. The drilling contractor's reference
• B. The property Owner's records
• C. Compliance with regulatory entities
• D. Friendly relations with neighbors

Answer: (C)

Documenting a well completion creates an official, verifiable record of how the borehole was drilled and finished. It captures details like depths, casing and grout placement, screen intervals, lithology, water levels, and any pump tests. This information is essential because regulatory entities require these records to verify that construction followed applicable standards, protect groundwater quality, and maintain a traceable history for future oversight and compliance. The completion log becomes part of the official file used for permitting, compliance reviews, and long-term well management, including potential updates or transfers. While having the log is useful for the drilling contractor and the property owner, its primary importance lies in meeting regulatory requirements and providing a reliable, long-term record.