Case Studies

Wastewater treatment plant


Type: Demolition & Decommissioning
Contract Value: $625,000
Period | Location: Spring/Summer 2012 | Washington, D.C. area
Work Areas: Decommissioning; demolition; tank, vessel, pit cleaning and decontamination; radioactive management, cleaning, transportation and disposal.


This active waste water treatment plant, one of the largest on the east coast, was currently being upgraded to manage new state and federal discharge guidelines. EWMI was contracted to demolish, decommission, and manage various large scale tasks. EWMI was on site approximately 100 days to complete these diverse tasks. Many tanks were cleaned, demolished, and cut up for eventual steel scrap. Associated piping was also flushed, cleaned, cut, and scraped. EWMI set up an organized system of recyclable/steel scrap and non-metallic debris and sludges for off-site transportation and disposal. EWMI managed and selfperformed this entire demolition project of these areas.


Certain areas contained TENORM radioactive residual contaminants and had to be carefully managed by EWMI. The company hired an independent radioactive oversight individual to write a complete approach for these areas. All TENORM radioactive decontamination and decommissioning work was followed exactly according to the work approach plan. All wastes from this delicate procedure were separated and containerized from all other decommissioning wastes. These wastes were sent to a fully permitted radioactive disposal facility. EWMI self-performed all the TENORM decommissioning.


Final project timeframes were met. Decommissioning and demolition of all contracted items were completed. Additionally, new demolition items were offered to EWMI, which were subsequently approved and completed.

Major international photography wholesaler


Type: Selective Interior Demolition
Contract Value: $240,000
Period | Location: August-November 2013 | Central New Jersey
Work Areas: Removal of obsolete film processing equipment, disposal of sodium oxide and sulfuric acid, construction debris and asset & recovery.


EWMI performed a strategic, surgical demolition of a film process manufacturing line to prepare utilization and reconfiguration of an area for warehouse storage. EWMI conducted a comprehensive lock out tag out program for process water, steam and air lines. Worked closely with a New Jersey state licensed electrician to verify all energy sources were terminated prior to removal of the equipment.


The selective demolition involved three large rooms for the associated equipment that encompassed ceiling and roof areas. Most of the equipment was dismantled by hand to avoid hot work in close proximity to operating lines still in use. One of the three rooms scheduled for demolition was sensitive to light for archived film storage, therefore the work lights on the equipment were covered with red film to protect the clients years of sensitive inventory. EWMI worked with recycling yards and buyers of working equipment, which enabled EWMI to give its client maximum dollars for asset recovery.


Though, the piping and equipment had been decommissioned and cleaned prior to the start of the project, piping contained residuals that needed to be drained, collected and disposed such as sulfuric acid, sodium and aluminum oxide from the film making process. Hardened solids remaining in the bottoms of tanks needed to be removed to maximize scrap value and eliminate the need for land filling these items. Many processes that need to be removed, were in tight, hard to reach areas, which EWMI surgically removed.

Major international petroleum company


Type: Decommissioning
Contract Value: $590,000
Period | Location: December 2012-April 2013 | Central California
Work Areas: Decommissioning, demolition, concrete crushing, backfill & restoration.


This California project was a second phase to the original project that started EWMI’s West Coast operations. Fifty two (52) above ground storage tanks (AST’s) were decommissioned and demolished by EWMI. All asbestos containing material (ACM) from each tank was identified, isolated, and properly removed according to California state and federal guidelines. Resultant contaminated soils from beneath each tank was excavated, stockpiled, transported, and disposed. Certain areas had concrete pads that were removed and crushed on site. Additional piping was removed, cleaned, cut, and sent for scrap. An additional area known as the “scrap” yard was also managed by EWMI.


Various items including metal, telephone poles, cement, and construction debris were sheared, cut, sized, and disposed/transported by EWMI. EWMI’s complete turnkey approach to this second phase allowed a smooth and seamless project completeness for both the demolition and soil remediation. These two tasks were completed in approximately 5 months on time and on budget.

Major international chemical & petroleum company


Type: Decommissioning and Demolition
Contract Value: $1,800,000
Period | Location: Fall 2012-Fall 2013 | Central California
Work Areas: Demolition, decommissioning, asbestos removal, soil excavation, and complete GC services of multiple disciplines.


This massive demolition and decommissioning project in California propelled EWMI to commence a West Coast operations division. A major international chemical and petroleum company needed over 220 above ground storage tanks (5000 gallons—1,000,000 gallons in size) to be demolished and decommissioned. This site , though, was not a straight forward project due to access issues and other tasks involved. Many tanks contained asbestos. Therefore, each and every tank needed to be documented, observed, and verified of asbestos containing material (ACM). If present, the ACM was removed according to all federal and state guidelines. Also, piping, nearby buildings, vessels, and equipment limited access. This complicated the means and methods to the demolition process. Sequential and precise decommissioning and demolition was performed to protect the nearby obstructions that needed to be protected.


After each tank was demolished according to each tank “plan,” the subsequent soils beneath tank floors were then remediated. Petroleum contaminated soils were excavated, stockpiled in an engineered stockpile area, and analyzed for disposal parameters. Upon approval, the soils are properly transported and disposed at a fully permitted disposal facility. Final steel is properly sized by EWMI via excavator(s) with shears. All asset recovery of steel from tanks is provided to owner providing offset of costs to the project. All excavated soils are backfilled and brought to grade with a gentle slope to allow for proper drainage. Critical health and safety requirements were met along with strict schedule goals.

Hydrochloric acid plant building

and associated buildings and pipe



Type: Dismantling and Demolition
Contract Value: Confidential
Period | Location: August-November 2013 | Tamaqua, PA
Work Areas: Disassembly, surgical and structural demolition - multiple tanks, vessels, equipment, buildings, pipe rack and conveyance, and concrete berms and pedestals.


EWMI performed surgical and structural demolition services of this former Hydrochloric Acid plant including associates buildings, pipe racks, vessels, and process equipment. One of he project goals was to maximize the reclamation of building materials, and minimize waste and debris being shipped off site to a landfill. All recyclable metal and concrete materials were segregated from lighter debris (insulation, sheet rock, soft building products). Scrap metal was sold to offset the project costs. Waste masonry materials were stockpiled and later crushed for beneficial fill purposes.


Disassembly and demolition of all contracted items were completed in a timely fashion. Additionally, new demolition items were offered to EWMI, which were subsequently approved and completed. Zero loss time due to health & safety issues.

Former 1-C gas plant and remote compressor stations


Type: Dismantling and Demolition
Contract Value: Confidential
Period | Location: May-December 2013 | Bakersfield, CA
Work Areas: Asbestos abatement, decommissioning, demolition - multiple tanks, vessels, distillation towers, process areas & equipment, buildings, pipe rack and conveyance, concrete slabs and below grade foundations.


This former Gas Plant and remote Compressor Stations had been idle for many years. To make room for new process and production areas, this Major PetroChemical client contracted EWMI to perform the complete site demolition of these industrial settings, located in the active oil fields of Central California.


Specifically, EWMI demolished the entire above grade properties down to and including the concrete slabs and large, below grade concrete support foundations and footings. EWMI assisted the Client in maximizing revenue from the sale of recyclable scrap metal and use process equipment. Crane subcontractors were used to assist with the removal of heavy process equipment, as well as the safe rigging and lowering of over (7) process towers and large above ground storage tanks. Active underground natural conveyance piping restricted the ability to demolish the process towers from the ground, using traditional demolition methods. All scrap metal was sized for recycling purposes, and EWMI managed the on-going sorting, staging, and loading of thousands of tons of recyclable ferrous steel, stainless steel, aluminum and copper wiring. More surgical demolition techniques (cold methods) were required to separate and remove idle conveyance piping, around active natural gas pipelines. Final site grading using crushed masonry materials, and imported fill, was completed to allow sufficient storm water drainage.

Obsolete chemical plant


Type: Demolition and Decommissioning
Contract Value: $550,000
Period | Location: Spring/Summer 2011 | Northern New Jersey
Work Areas: Decommissioning, demolition, tank, vessel, pit, and drain cleaning.


An obsolete chemical plant owned by a major international chemical company needed to be decommissioned. EWMI’s demolition and decommissioning plan was selected from four (4) bids. EWMI provided a plan with the highest payment for assets (steel/alloys) coupled with a strong technical approach, health and safety record, and schedule. Due to the diversity of chemicals within the bins, vessels, kettles, mixers, drains/sumps, and piping, the technical approach, sequence, and health and safety record were paramount in the selection of EWMI. Ultimately, this was supported in the performance.


All tanks and vessels (42) of various sizes and dimensions were cleaned of all liquids, sludges, and solids. Process piping associated with the tanks and vessels were also cleaned and decontaminated. All of the pipes, vessels, and tanks were then demolished and cut for scrap. Sumps, drains, and pits were also cleaned and pressure washed. All associated wastes from these operations were managed by EWMI.


All asset value of the different grades of steel were documented, recorded, charted, and presented to the client to offset the final project costs. This approach allowed for an open and fair transaction by displaying income of steel assets to the client.

Chemical plant complete internal demolition


Type: Demolition and Decommissioning
Contract Value: $800,000
Period | Location: Spring/Summer 2012 | Philadelphia, PA
Work Areas: Decommissioning, demolition, tank, vessel, pit cleaning and decontamination.


A complete internal demolition was required at this closed chemical plant near Philadelphia, PA. A 400,000 square foot plant had to be completely decommissioned internally. For many years, this operation served as a large and critical manufacturing operation. Pipes, vessels, tanks, kettles, and other internal manufacturing equipment had to be completed cleaned, decommissioned, demolished, cut for scrap, and recycled. Schedule, sequence, safety, and a detailed work plan was paramount to meeting the strict time requirements to turn over an “empty” building to the client.


EWMI started with a critical planning stage, recording and documenting each and every vessel, tank, and piece of equipment. Each and every item was recorded, tagged with size, dimension, type of construction (carbon steel, stainless, fiberglass, etc.), volume of waste inside and then photographed. The planning stage continued with a work scope for cleaning and then the eventual demolishing, cutting, and rigging out to the staged scrap recycling area.


Asset recovery was maximized for the client by the planning and documenting stage. Carbon steel, stainless steel, and copper was recovered to offset the project costs. The varied wastes from many tanks were properly pre-sampled, characterized and analyzed, profiled, transported, and disposed to a fully-permitted disposal facility.