MONITOR WELL INSTALLATION - ZEBRA has installed 1/2 in. to 2 in. diameter wells for both monitor and recovery systems. Well materials comprised of PVC, stainless steel, galvanized steel or carbon steel. Monitor wells have been installed to depths of up to 150 ft. WELL DEVELOPMENT - ZEBRA has developed wells with hand bailers, submersible pumps, and hand pumps. Surge rigs with jetting and surge blocks are also used when required.