This Values Berkwood At 36 Million AS It Stands Without futhur drilling yum . To exercise the option to acquire 5% of the Berkwood Graphite Project, Volt will be required to make a cash payment to Green of $1,500,000 on or before December 31, 2025. This 5% interest can be repurchased from Volt for a payment of $1,800,000 at any time.