In 2002, Fabre Engineering & Surveying completed two wastewater projects and one groundwater well project with the Navy Public Works Center (PWC) aboard NAS Pensacola.
The first wastewater project involved a Base-wide wastewater reuse study. Fabre Engineering & Surveying was retained to study the feasibility of using effluent from the WWTP for land application sites aboard NAS Pensacola. The goals of the study were to examine the potential demand for reclaimed water, investigate approximate costs involved in constructing a reclaimed water distribution system, and recommend necessary WWTP modifications and major distribution main routes on a conceptual planning level. The study focused on six sites throughout the Base, and the recommended plan included three sites which currently have irrigation systems: Barrancus Cemetery, the A.C. Read Golf Course and the Naval Air Technical Training Center (NATTC) campus. The recommended plan considered current WWTP flows, as well as near-term flow projections and the water-absorption properties of the soils at each site.
The second wastewater project involved the design of an ultraviolet disinfection system for the Base WWTP. This design is for Abasic-level disinfection, since the plant currently has a surface water discharge to Pensacola Bay. In anticipation of the plant converting to 100% reuse at some time in the future, our design considered expansion of the UV system to achieve a high-level disinfection, which is necessary to satisfy public access reuse requirements.
The groundwater well project studied the existing groundwater irrigation wells which supply the existing irrigation system for the NATTC campus. The water in these wells has caused severe iron staining of buildings and walkways. Fabre Engineering & Surveying’s scope of services included sampling and testing of existing water conditions in each well. These tests revealed very high iron content in the water, as well as the presence of iron bacteria. Fabre Engineering & Surveying’s work also included investigation of chemicals available to help reduce future iron staining, and other recommendations including implementation of the recommendations of the wastewater reuse study.