He was confirmed by the United States Senate on August 15, 1964, and received his commission the same day.
[2] He assumed senior status due to a certified disability on June 1, 1977, and retired on April 1, 1994.
[2] Among Zampano's most notable cases was the L'Ambiance Plaza disaster of 1987, in which a half-finished apartment complex in Bridgeport collapsed, fatally crushing 27 workers and maiming 16 others.
[2] Zampano was also one of the mediators in the cases brought by investors against Arthur Andersen arising from the collapse of Colonial Realty Co., the biggest investment-fraud scandal in Connecticut history; the result was a $90 million settlement.
[3][4] After retiring from the bench, Zamano worked with "the short-lived Sta-Fed ADR Inc., a nonprofit state-chartered service for resolving legal disputes.