Tidelands Oil Production Company in Southern California replaced an electric motor-driven pump with a Waukesha VHP P9390 GSI natural gas engine and pump package, emphasizing power generation and the oil and gas industry. The engine drives a high-pressure centrifugal pump injecting water into old oil reservoirs, enhancing oil production. The decision was motivated by on-site gas availability, cost savings, and meeting strict air quality regulations, crucial for power generation and the oil and gas sector. The engine's emissions were controlled by Continental Controls Corp. systems, ensuring compliance with stringent California air quality limits, relevant to emissions standards in the industry. The project aimed to maximize oil production and utilize noncommercial gas resources, aligning with a state rebate for displacing on-peak power, significant for power generation economics. The installation's success led to future plans of replacing older engines with similar setups, benefiting from the ECV 5 valve technology and emission control mechanisms, relevant to modernization strategies in the oil and gas sector.