• Underground and Aboveground Storage Tank Management
• Soil Remediation Services
• Groundwater Remediation Services

Underground and Aboveground Storage Tank Management: Amtec provides a wide range of services to meet the needs of its clients in the area of chemical and petroleum underground storage tanks (UST) and dispensing systems. Services include testing, repair, removal, replacement, modification and installation of tanks, plus the comprehensive design, engineering and permitting functions necessary for proper management of small and large tank projects from inception through completion.

Older tanks without corrosion protection are a liability for owners and operators, and should be removed or replaced as soon as practical. A typical tank removal project includes:

• Permit acquisition, coordination and scheduling for inspection by regulatory agencies
• Evacuation, triple-rinsing, degassing, certification and removal of tank(s) in compliance with State and local regulations
• Disposal of tanks, dispensers, related piping and rinsate in accordance with current applicable environmental regulations
• Soil sampling in tank excavation
• Backfilling of excavation and compacting, according to local city or county specifications, where required
• Preparation of a tank closure report by a Registered Geologist

Newer single-walled tanks with corrosion protection, such as those made of fiberglass or fiberglass-coated steel can often be upgraded with leak detection to meet Federal and state requirements. Double-walled UST and integral leak detection and monitoring systems of various makes and sizes from different manufacturers are recommended and include purchase, delivery, installation and start-up of new tanks and dispensing systems.

Amtec also designs, engineers, installs and tests aboveground storage tank or tank farms including piping and instrumentation. New aboveground tanks are designed with fire protection and impact resistance in mind. These can typically be installed at a 20% to 30% savings compared to an underground tank installation.

Soil Remediation Services: Amtec offers a variety of soil remediation processes. For smaller soil remediation projects, excavation and off-site treatment of contaminated soil is usually the most economical option. We bring experienced project managers, hazmat-certified equipment operators, reputable waste haulers, and licensed treatment facilities to a client's project.

For larger sites, on-site soil remediation services are provided through the use of trailer-mounted rotary kiln-type Mobile Treatment Units (MTU). The trailer-mounted systems are designed to reduce the concentrations of petroleum hydrocarbons or other hazardous chemicals in contaminated soils to acceptable levels by means of aeration and vapor extraction or chemical oxidation. Units are equipped with emission control features, and can be connected readily to a thermal oxidizer or carbon adsorber for in-situ destruction of volatile organic compounds.

Excavated and stockpiled soil on the ground can be remediated by bio-treatment. Bio-treatment can be achieved by introduction of cultured bacteria along with extra-cellular enzymes, oxygen and nutrients to hydrocarbon-contaminated soil. The bacteria consume hydrocarbons to reduce or eliminate contamination.

In-situ soil remediation can be achieved by

1. Air sparging, where gas (usually air or oxygen) is injected under pressure into well(s) installed to volatilize contaminants adsorbed to the soil matrix. Volatilized contaminants migrate upward and are removed upon reaching the vadose zone, typically through soil vapor extraction;
2. Horizontal wells, especially useful when contaminant plume covers a large area and has linear geometry, or when surface obstructions are present. This technology can be used in the application of various remediation techniques such as ground-water and/or non-aqueous phase liquid extraction, air sparging, soil vapor extraction, in situ bioremediation, in situ flushing, hydraulic and pneumatic fracturing, etc.;
3. Hydraulic and Pneumatic Fracturing: Hydraulic fracturing involves injection of high pressure water whereas pneumatic fracturing involves injection of highly pressurized air into consolidated sediments to extend existing fractures and create a secondary fracture network to increase soil permeability and facilitate remediation by vapor extraction, biodegradation and thermal treatments
4. Thermal Enhancement where, use of steam, heated water, or radio frequency (RF) or electrical resistance (alternating current or AC) heating to alter temperature-dependent properties of contaminants in situ to facilitate their mobilization, solubilization, and removal. Volatile and semi-volatile organic contaminants may be vaporized; vaporized components then rise to the vadose zone where they are removed by vacuum extraction and treated.

Groundwater remediation: Impacted groundwater may be pumped out via an extraction well and remediated at the surface by air stripping. Although air stripping is a well-proven and commonly used method for removing volatile and some semi-volatile contaminants from groundwater and industrial wastewater, it is also a dynamic technology undergoing continuous refinement.

In-situ remediation is achieved by bio-enhancement through introduction of bacteria, oxygen and nutrients. Air sparging is a proven method of removing dissolved phase volatile petroleum hydrocarbons from groundwater by moving them into the vapor phase. Vapors ultimately are pumped out and treated using one of the listed methods. Light non-aqueous phase liquid (LNAPL) and initiate vadose zone remediation through bio venting. In bio venting, air is drawn through the impacted vadose zone via extraction wells equipped with low vacuums to promote biodegradation of organic compounds.