Partner in Ossentjuk & Botti, Westlake Village, CAMr. Ossentjuk focuses his law practice on oil and gas transactions, including conveyances, leasing, operations, title issues, joint ventures and operating agreements, and compliance with federal, state and local oil and gas regulations. He is one of a limited number of attorneys in California with significant experience in the litigation of oil and gas disputes, including lease termination/preservation issues, unit and joint operations disputes, royalty and title matters, and post-operation environmental clean-up and abandonment issues. He also has significant experience in the purchase, sale and development of environmentally-impacted properties, including the negotiation and litigation of environmental aspects of purchase and sale agreements, leases, joint ventures and partnerships, oil field development and abandonment agreements, environmental insurance policies, land use entitlements, and prospective purchaser agreements. Mr. Ossentjuk also regularly handles general business, real estate and environmental litigation. He has successfully litigated and tried numerous business disputes involving claims for breach of contract, trespass, nuisance, fraud, breach of fiduciary duty, business interference, corporate and partnership governance issues and insurance coverage. Mr. Ossentjuk is a graduate of Claremont McKenna College (1983) and the UCLA Law School (1987).