PEI has conducted numerous UST closure and petroleum remediation activities for both municipalities and private property owners. Some of these have included the use of forensics to determine spill timeframes.

For a private property owner in West Seneca, New York, PEI provided soil excavation, sample collection, and closure activities including removal and proper disposal of 5,096.85 tons of petroleum contaminated soil. The scope of work focused on the excavation and proper disposal of impacted soils identified as source material associated with a release of gasoline from the historical location of underground storage tanks (USTs) and pump islands at the property.

PEI completed a series of environmental subsurface investigations and remediations at the property located in Albion, New York . Remediation efforts included the removal and disposal of the single 1,000 gallon heating oil UST and associated limited residual impacted soil from the UST pit as well as approximately 1,500 cubic yards of gasoline contaminated soil. All contaminated soil was distributed in a Biocell onsite for treatment.

A Bio-Cell measuring approximately 400 feet long by 160 feet wide was constructed on property of 6 millimeter thick black poly with 3 foot connected berms placed at each of the four compass directions. A sump was installed on the northwest corner of the cell and 6 inches of loose straw placed on top of the poly. The soil will be treated with approximately 18,000 gallons of a bacteria/water mixture. The design, as-built drawings, and treatment descriptions were presented in a Remedial Action Plan (RAP) prior to the start of work and to gain concurrence with the regulatory authority.

For another private client, PEI completed a series of investigations and completed UST closure actions at a property in Williamsville, New York. A detailed magnetometer survey was completed using a highly sensitive metal detector (Geonics EM61) to survey anomalies related to buried USTs, metal pipes, and the former pump island. The results of the survey were used to direct the subsurface investigation and UST closure tasks.

Closure and remediation activities included the excavation, removal and disposal of three approximately 4,000-gallon USTs, one approximately 2,500-gallon UST (including contents), associated piping, and 562.25 tons of impacted soil.