ROI Comparison to Vertical Wells
SITE
Putnam County Road Camp
Florida FAC.ID-8521000
SITE INFORMATION
The Putnam County Road Camp site contained both AST’s and UST’s. A petroleum discharge was discovered at the site in1985. During the assessment phase a vertical biosparging pilot test was performed which concluded that it would be aneffective treatment technology and demonstrated a 10-foot radius of influence (ROI). A full-scale system implementing theVertebrae Well System was designed to address two source areas on site.
DESIGN AND INSTALLATION
The full-scale design includes 7 Vertebrae systems, with 39 independent wells. In order to save on installation cost and toevaluate system performance, a phased approach was used. The installation of Phase I consisted of 3 Vertebrae Well Systemswith a total of 16 independent Vertebrae wells to address the source area on the west side of the property. Drilling andinstallation took place behind the site building where the remediation equipment compound would be located.
SYSTEM OPERATION RESULTS
The system became fully operational in February 2021 and was monitored for 2 quarters to measure positive effects on the aquifer before the application of microbial enhancement compounds, as well as measuring the zone of influence. The field data collected showed that the 10-foot ROI gathered from the vertical pilot test was very conservative when compared to VC19 EN Rx Inc. PO Box 270586 Flower Mound TX 75027 www.enrxinc.com CS14: Vertebrae Influence 2 how the Vertebrae Well System was performing. The updated zone of influence was 20-feet (which is four times the coverage), which allowed for a redesign of Phase II to eliminate one of the proposed Vertebrae Well Systems entirely.
CONCLUSIONS
The update to the Phase 2 design, resulted in a reduction from 23 to 14 Vertebraewells, both optimizing performance andreducing the overall project costs. Field measurements have proven what the science has always shown – influence fromthe horizontal plane is greater than from the vertical. At this site, the Vertebrae Well Systems performed four times betterthan their vertical counterpart.
As more sites utilize VertebraeTM Well Systems for remediation, and experience the added control and improvedefficiency, more sites choose VertebraeTM Well Systems as the preferred “tool” to implement the selected remedialapproach. However, this site shows direct evidence for yet another reason for choosing Vertebrae; significantly moreinfluence resulting in excellent costs savings!
