California & Nevada Civil Engineers and Land Surveyors Association, Inc. (“CELSA”) was formed in 1941. CELSA is the result of six local employer organizations joining into a common organization to better represent themselves in contract negotiations with the largest Construction Industry Local Union in the United States - Operating Engineers Local Union No. 3. Today, California & Nevada Civil Engineers and Land Surveyors Association is the premier employer trade association in Northern California and Northern Nevada representing employers of field survey employees in collective bargaining and labor relations. The primary goal of California & Nevada Civil Engineers and Land Surveyors Association is to keep its members' firms competitive in the Northern California and Northern Nevada marketplace.