Characterization of the Ozark Aquifer and Installation of Industrial and Public Water Supply Wells: St. Genevieve, Missouri
Leggette, Brashears & Graham, Inc. (LBG) has completed testing of the Ozark Aquifer for an industrial and public water supply in northern Ste. Genevieve County Missouri with the installation of two wells each 1,500 feet deep.
LBG’s client sought a sustainable water supply for a project with an expected life of over 100 years. Even though this facility is located next to the Mississippi River, an obvious potential source of water, LBG saw expensive treatment of the river water and limited space to build a treatment facility on the floodplain were hindering factors.
Looking for options other than the river, LBG reviewed scientific literature to determine what was known about the quality of ground water in the Ozark Aquifer, a bedrock unit made of many types of rocks totaling approximately 2,000 feet in thickness. LBG testing determined a sustainable yield of sufficient quality is available.
LBG’s client will save great costs by using groundwater from bedrock wiht lower treatment cost versus the higher cost of treating water from the river.
PERMITS AND PAPERWORK MANAGEMENT
– LBG wrote detailed work plan, drilling and well specifications
– Wrote and obtained permit from MDNR
– Prepared contract language for subcontractors
– Wrote request for bid documents
– Prequalified drilling contractors for invitation to bid
– Analyzed bids and selected winning drilling firm
– Managed invoices, insurance and other administration of subcontractors
– Yield high enough for demand
– Water requires minor treatment to meet industrial specification
– Aquifer thickness 2,000 feet
– Limestone, Dolomite, Sandstone and Shale
– Formations encountered-Plattin Limestone through the Potosi Dolomite,
– Fresh water down to the Eminance Formation