SVE Installation at Fuel Service Station, Eastern NY
PROJECT HIGHTLIGHTS:
- Self-performed the Utility Location
- Service station remained open through duration of system installation
- Installed over 1000 LF of piping
- Installed 6 system wells and 5 monitoring points
- Conducted site restoration
This site was a former fuel service station located in Eastern New York, and required trenching, piping, and restoration associated with the installation of a Soil Vapor Extraction (SVE) system.
Prior to the start of any work activities, independent site utility mark out was performed. SES then utilized soft dig methods to locate and expose existing subsurface utilities to a depth of four feet where they crossed the proposed system piping. The 200 linear feet (LF) of proposed trenches were cleared on a 10-ft interval.
SES implemented site-required safety measures, including the installation of temporary fencing with an anti-static shield around the work area prior to beginning each shift. The fencing was then disassembled following each shift. In addition, traffic signs were posted in order to direct station traffic safely around the always-changing work area.
An SES subcontractor installed three air sparge wells, three vapor extraction wells, and five monitoring wells at the site. One air sparge and one vapor extraction well were pre-existing on the site and were incorporated into the new system.
SES excavated approximately 200 LF of trench to an average depth of three feet. Approximately 1000 LF of subsurface pipe that ranging from 1-inch to 4-inch PVC piping was then installed. The excavation, piping, and backfill activities were conducted in 50-ft sections, allowing for the continuous flow of traffic. Road plates were used to cover the sections of open trench overnight. Each well head was connected to the system piping and finished with a road box and concrete apron.
SES installed a new concrete slab and then installed a client-supplied treatment system on top. The treatment system required electrical service and a wooden enclosure for the exposed piping and a chain link fence.
The site was restored with new asphalt over a 2,000 square foot area, as well as grass, seeding, and planters in select areas.
