Site reconnaissance to document site conditions and assess potential impacts
Magnetometer surveys to locate tanks
Investigation to determine whether tanks are leaking and estimate the extent of contamination
Remedial design to resolve soil/groundwater problems
Cost estimates/recommendations for remediation (specifications and drawings)
Implementation of remediation with contractors
Reporting to and negotiations with regulatory agencies
Design and construction of USTs/ASTs
Closure documentation including as‑built drawings of the remediated site
Established relationship with regulatory personnel

NTH’s Value Added

Our certified UST professionals have an extensive knowledge of local subsurface conditions and an established relationship with regulatory personnel, which facilitate the management of underground storage tank problems

Storage Tank Services

Management & Compliance Services

NTH's staff of geologists, engineers and scientists is experienced in the investigation and resolution of leaking underground tank problems. We utilize state‑of‑the‑art investigation techniques, provide comprehensive regulatory reporting, develop remedial designs and implement remedial plans.

Investigation and Evaluation
NTH professionals perform a site reconnaissance at the onset of a leaking UST project to document site conditions, tank location and capacity and assess the potential impact of any leaking tanks on nearby facilities, groundwater aquifers and rainfall water bodies. This site reconnaissance often includes detailed magnetometer services to locate tanks. Upon identification of a potential problem, we perform an investigation to determine if tanks are leaking and estimate the extent of petroleum contamination in the soil and groundwater.

Remedial Actions
If a leaking UST has impacted the surrounding environment, we begin to develop remedial options for resolution of soil and groundwater problems. These options may include removal of contaminated soils, treatment of contaminated soil using vapor extraction techniques and pumping and treatment of contaminated groundwater. We develop cost estimates and recommend the most suitable option for remediation. Specifications and drawings are prepared by our experienced staff that collaborates with contractors specializing in environmental site remediation.

Regulatory Compliance and UST Maintenance
Our staff regularly interacts with regulatory agencies and is experienced in providing appropriate periodic reports and successfully representing our clients in negotiation of remediation programs. We prepare closure documentation reports for our clients that provide investigation and remediation results as well as as‑built drawings of the remediated site.

NTH also assists clients with proactive tank management programs as well as inventory control and tank testing plans to maintain performance of existing tank systems. We design, subcontract, and monitor new underground and aboveground tank installations to facilitate compliance with applicable regulatory requirements.