Mealey's (August 19, 2019, 4:18 PM EDT) -- LAKE CHARLES, La. — An excess commercial general liability insurer has no duty to defend or indemnify its insured against an underlying environmental contamination lawsuit because the damages alleged in the underlying suit occurred outside of the insurer’s policy periods, a Louisiana federal judge said Aug. 16 in granting the excess insurer’s motion for summary judgment (Admiral Insurance Co. v. Zadeck Energy Group Inc., No. 16-912, W.D. La., 2019 U.S. Dist. LEXIS 139334)....