Landlord bas delivered to Tenant copies of all studies in Landlord's possession concerning the presence of Hazardous Substances on the Premises and will promptly furnish Tenant with a copy of any additional such study that Landlord obtains on or within two months after the Commencement Date. Landlord represents to Tenant that, to Landlord's current actual knowledge (without duty of investigation), there are no Hazardous Substances present on the Premises as of the date of this Lease in any manner or quantity that violates any Environmental Laws. Landlord will indemnify, defend and hold Tenant harmless from and against all damages, costs, losses, expenses (including, without limitation, actual attorneys' fees and engineering fees) arising from or attributable to (i) the existence of any Hazardous Substance at the Premises as a result of the acts of Landlord or its agents, employees or contractors, and (ii) any breach by Landlord of its representation contained in this Section 6.3.