The Wastewater Gravity Collection System located in Bay Acres was a multiple-step project to upgrade an existing subdivision from septic tanks to mainline sewer connections. This project consisted of approximately 3,900 linear feet of 12-inch pipe and an additional 22,300 linear feet of 8-inch PVC sewer main under the streets. KE&G installed over 470 HCS connections from the mainline to the property line, which added up to over 50,000 linear feet of 4-inch house lines. Each connection was then installed on properties where people currently lived, which made for tight working conditions. Every house had a septic tank and KE&G was required to demolish then filled the tanks with sand or dirt. There were several unique septic tank locations that were discovered.  In 2 cases the septic tanks were under the homes living room. These tanks were successfully filled with a concrete slurry due to limited access. KE& was able to successfully communicate the importance of safety with all the homeowners and mitigate all potential hazards by the use of steel plates, orange fencing, barricades, and daily communications with homeowners. This was a successful project for KE&G and an added asset to the City of Douglas and Cochise County.