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Site Remediation | Environmental Construction
Code Environmental Services, Inc. has been involved in some of the largest and most complex remediation projects in the Country. From installing a DDT sediment cap on the Rahway Riverbed to lowering heavy equipment and roll-off boxes into a PCB contaminated rail yard 70 feet below a busy New York City street, CODE has proven it can get the job done. CODE is particularly proud of its involvement in the PATH Tunnel Restoration at the World Trade Center Site. Working closely with a host of trades and some of the largest construction firms in the tri-state area, CODE provided environmental support services during reconstruction of the underground tunnels destroyed on September 11th.
CODE is also very proud of its site remediation and environmental construction efforts on the following, featured projects.
Superfund Site | Decon-Demo, In-Situ Soil Stabilization, High Volume Earthwork, Capping
Multi-year, multi-phase, multi-million contract at a former drum processing facility (Brownfields Redevelopment Site) in Northern New Jersey.
Phase 1 – Site Decommissioning. Decontaminated and demolished buildings, tanks, piping, steel trenches, and an incinerator. Managed resultant waste (C&D, tires, scrap, impacted liquids, etc.) for off-site disposal/recycling.
Phase 2 – RAWP-1 (Soils). In-situ stabilized, excavated, and off-site disposed of 50,000+ tons of hazardous and non-hazardous soils. Contaminants of concern included PCBs, VOCs, SVOCs, metals, PAHs, and dioxins/furans.
Phase 3 – Concrete. Demolished and crushed 5,300 tons of concrete slabs associated with former site structures for off-site disposal (impacted) and approved on-site reuse (non-impacted).
Phase 4 – SWM System. Decommissioned and replaced an existing storm water management system with a new system comprised of bermed basin, manhole, outlet structure, and emergency outfall. Excavated additional hotspot soils for off-site T&D.
Phase 5 – ROW Excavations & Capping. Utilized soft dig procedures to excavate impacted soils for off-site T&D within a NJ Turnpike Authority right-of-way and two natural gas pipeline utility easements. Stabilized/excavated/off-site disposed of PCB- impacted soils from and constructed engineered cover systems (aggregate cap and vegetative soil cover) over an adjacent NJDOT ROW property.
Phase 6 – Clean Soil Cap. Constructed an engineered cover system (low permeability soil cap) over the remediated 17-acre site. Installed clean soil cover over SWM basin and aggregate cover with geotextile and low-permeability soil in the adjacent NJTA ROW. Vegetative cover maintenance is ongoing.
Brownfields Site | PCB Soils & Groundwater Remediation
Ongoing, multi-phase, $18M+ project at a former copper products refinery site in the Laurel Hill section of Maspeth, Queens, New York. Located along the tidally-influenced Newtown Creek Inland waterway, this site was remediated under a voluntary cleanup per NYSDEC requirements. The now redeveloped site is currently occupied by a national wholesale food warehouse franchise, trucking company, and other commercial interests.
Phase 1 – Soil: Excavated and off-site disposed of 20,000 tons of TSCA/RCRA mixed waste and non-hazardous soil. Demolished and crushed 2,500 tons of concrete. Decontaminated 76,000 sf of concrete slab. Removed 25,000 gallon UST. Repaired bulkhead and installed multi-layer armoring system to stabilize the remediated creek bank. Installed hydraulic barrier wall (HBW) which had to be driven around several combined sewer outfall (CSL) structures that could not be interrupted. Jet grouted around the pipes to seal off soils between the CLS structures and HBW.
Phase 2 – GW: Constructed and providing long-term O&M of a 50 gpm GTWS. Utilized bio-polymer slurry trenching technique to install media drain piping, sumps, clean-outs, pea gravel and filter fabric. Installed concrete equipment enclosures, force mains, electrical conduits and ancillary equipment in the media drain trench. Installed, connected and tested utilities and a discharge line to the pump house.
Specialty Chemicals Site |PFAS-PFOS Treatment System Construction
Constructed a 650 GPM groundwater Hydraulic Containment and Treatment System (HCTS) for PFAS/PFOS remediation. The installation included process and outfall piping, equalization tank, air strippers, LGACs and VGACs, electrical control systems, HVAC, and treatment building on concrete slab over prepared subgrade. Managed 300+ pre-construction, construction, and close-out submittals.
Superfund Site | Buried Drum Removal, Soil Remediation, GW Treatment System Extension
Multi-phase, multi-million dollar project at a former drum disposal site in Upper Black Eddy, Pennsylvania.
Phase 1: Removed and handled 600+ buried drums containing chemical unknowns and acutely toxic materials (Levels A and B PPE). Performed remedial excavation during record-setting rainfall (43+ inches). Designed and installed dewatering system for the collection, on-site treatment, and permitted discharge of more than 750,000 gallons of construction water.
Phase 2: Dewatered pond (12,000,000 gallons removed) to facilitate extension of the Site’s existing Groundwater Extraction System (GES). Excavated utility trenches and installed conveyance piping/extraction sumps. Continuing to provide environmental construction services in support of the GES expansion/O&M.
Brownfields Site | Riverbank Remediation, Wetlands Stabilization, HBW Installation, Capping
Multi-phase, multi-million dollar DESIGN-BUILD project performed along and in the tidally-influenced Passaic River at a New Jersey ISRA Site.
Phase 1 – Riverbank Soils. Installed BioLogs along shoreline and floating turbidity barriers in the river. Demolished and removed existing concrete structures along the riverbank as well as three pipe outfalls in the river. Installed a temporary riverbank bank shoring (sheet pile) system. Excavated and off-site disposed of impacted riverbank soils and sediment. Stabilized remediated riverbank slopes and wetland areas.
Phase 2 – Hydraulic Barrier Wall. Installed steel sheet piling along a 250-ft alignment to an approximate depth of 50 feet.
Phase 3 – GWTS Enhancement. Teamed with a leading engineering firm to design-build an enhanced in-situ bioremediation injection element for groundwater treatment. As part of this effort CODE managed installation, repair, and upgrade of extraction and monitoring wells by a NJ-licensed driller.
Phase 4 – Final Cap/Finishing Details. Installed asphalt and GCL vegetative caps, permanent security fence with gate, and and solar lighting poles.
Phase 5 – Wetlands O&M. Providing ongoing inspections and maintenance of the Site’s restored wetland areas.
Superfund Site | Environmental Construction, Demolition & Site Support Services
CODE’s experience at this Superfund Site in Bridgewater/Bound Brook, New Jersey dates back to the 1990s; we’ve been operating under teaming arrangements with the Owner’s Engineer since 2011 providing a wide range of DESIGN/BUILD services including construction of a new operations facility (maintenance building with hazardous waste storage area); installation of a new 20-mil HDPE geomembrane cover over an existing RCRA surface impoundment; drainage and roadway improvements along active railroad tracks; and reconstruction/stabilization/enhancement of portions of the Site’s main Raritan River Flood Protection Berm. Recent task orders have included demolition and site support services for replacement of a 285,000-gallon bioreactor tank and 118,000-gallon sludge holding tank associated with the Site’s existing groundwater treatment facility. CODE has also decontaminated and/or demolished multiple buildings, a former drum storage area, concrete impoundment, AST farm, and collapsed remediation enclosure at this Site.
Brownfields Site |Metals Impacted Wetlands & Streambed Remediation
Excavated and off-site disposed of 14,000-tons of nickel and lead contaminated soils and sediment from wetland, wetland transition, and upland areas at a former battery manufacturing site in Metuchen, New Jersey. The remediated Site (formerly known as the Dismal Swamp) will ultimately become part of the Peter J. Barnes III Wildlife Preserve under Middlesex County’s Open Space Redevelopment Plan. According to Metuchen’s Mayor, the County’s purchase of this 18.7-acre Brownfields Site was “made possible thanks to the impressive environmental cleanup effort” by CODE Environmental Services, Inc. (Middlesex County NJ News, 12-22-21).
Cleared heavily wooded areas and constructed a 2,000 LF stabilized access road into the undeveloped wetlands portion of the site. Treated for invasive species (Phragmites, Mugwort, and Purple Loosestrife) prior to excavation. Temporarily bypassed a stream bisecting the site using sheet pile, sand barriers, dewatering pumps, and piping to facilitate remedial excavation. Cleaned and stabilized an existing stormwater culvert. Backfilled with imported clean fill, graded, and stabilized the remediated streambank with 1,300 LF of coir logs and 18,000+ SF of erosion control blanket (ECB). Performed restoration seeding (113,000+ SF) and wetland restoration planting (3,000+ trees and shrubs).
Superfund Site | PCB Impacted Wetlands & Soils Remediation, Buried Drum Removal
Excavated and off-site disposed of 60,000 tons of PCB-TSCA/RCRA impacted soils at a former solvent recycling and waste treatment facility site in Piscataway, New Jersey. Remediated, restored, and provided long-term O&M of a 5-acre wetlands area. Managed 1,000,000+ gallons of lead-contaminated water for on-site treatment. Handled, characterized, consolidated, and disposed of 350+ drums of site investigation waste as well as hundreds of buried drums and lab packs. Constructed stream diversions and installed piping for renovated surface drainage. Installed 28-acre vegetated clean fill and topsoil cap. Continuing to provide environmental construction support services for access road, drainage system, and groundwater recovery system O&M.
Hudson County Chromium Site | Impacted Soils Remediation & Environmental Construction
Completed multiple projects at an occupied, high-rise, residential apartment complex in Jersey City, New Jersey (HCC Site #154). CODE’s field team interacted daily with residents and was praised by the Property Manager for their community outreach efforts.
Phase 1: Excavated impacted soils from under walkways, beneath parking lots, and along building foundations to depths of 13 feet. Performed select area demolition of sidewalks, stairways, stairwells, lighting fixtures, sheds, and swimming pools as necessary to access the impacted work zones. Pressure washed and coated building foundations with a chemical sealant as an engineering control against future contamination. Also installed perimeter sheet pile barrier containment wall 24 feet from the building foundations for same purpose. Restored work areas to their original condition following remediation.
Phase 2: Installed a new subsurface drainage system and performed remedial earthwork in four additional AOCs. Installations included 6-inch and 8-inch PVC drain pipe; 4-inch HDPE drain pipe; and a sand drainage layer.
Superfund Site | Engineered Landfill Cap Construction
Constructed a 23-acre multi-layer soil and geosynthetic material (GCL/HDPE/LDPE) cap as the final remedy for contaminated soil, sediment, and soil gas at the former SCD Superfund Site in New Castle, Delaware. Project Owner was USEPA Region 3. The cap consisted of:
- Prepared subgrade (consolidated soils, imported structural fill);
- 8 oz. nonwoven subgrade separation geotextile (~1,000,000 sf);
- Rice gravel venting layer with soil gas collection piping;
- 8 oz. nonwoven gas layer separation geotextile (~1,000,000 sf);
- Low permeability compacted soil layer;
- 40 mil LDPE textured geomembrane (~1,000,000 sf);
- Geocomposite liner (~1,300,000 sf);
- 18-inch protective soil layer; and
- 6-inches of topsoil seeded and mulched to a vegetated cover.
SOW also included draining, stabilization and infill of a former stabilization pond for incorporation under the cap; high volume surface and subsurface concrete demolition and crushing; above and below grade utility abandonment and relocation; hot spot soils excavation and relocation under cap; SWM construction (drainage swales, berms, ponds, piping); and installation of a soil-gas collection and treatment system.
Brownfields Site | PCB & VOC Impacted Soil, Streambank & Wetlands Remediation
Excavated and off-site disposed of 35,000+ tons of hazardous and non-hazardous soil and sediment at a former chemical manufacturing site in New Brunswick, New Jersey that is bisected by a tributary of the Raritan River. Cleared (and eventually replaced) 100+ trees per the Site’s FHA Mitigation Plan; diverted stream to facilitate remedial excavation; stabilized the remediated stream bank; restored impacted wetland areas; and installed vegetated soil and gravel caps. Installed and operated high-volume dewatering and construction water treatment systems. By-passed and replaced a 100-year old, 21-inch sewer main. Worked with Owner to establish and maintain a BioPile as part of a pilot test program.
Active Chemical Plant Site |PCB Lagoon Closure, Hot Spot Soils Removal, Engineered Cap Construction
Multi-phase, multi-million dollar project at an active specialty chemical manufacturing site in Fords, New Jersey.
Phase 1 – Lagoon Closure. Dewatered and removed PCB-contaminated sediment and sludge located in a surface lagoon. Drained lagoon and handled resultant water. Removed non-contact sediment above an existing geotexile liner by hand for on-site reuse as clean fill. Peeled back the exposed geotextle and mechanically excavated sludge using long-reach excavators. Re-installed geotextile following backfill.
Phase 2 – Hotspot Remediation. Excavated PCB contaminated soil from multiple wooded and wetland area hotspots.
Phase 3 – Engineered Cap Repair & New Construction. Repaired an engineered cap previously installed by others. Excavated co-mingled clay and gravel from the damaged area, installed enhanced drainage layer, and replaced final cover. Excavated PCB-contaminated surficial soils from six additional wetland areas. Constructed an engineered cap system (nonwoven bedding geotextile, LLDP, drainage composite, 18-inches clean cover soil, 6-inches vegetative cover) over consolidated soils in the former PCB Lagoon Area.
Superfund Site | AST Demolition
Contracted to develop and implement a Removal Action Work Plan (RAWP) with associated EPA deliverables for 76,000 gallons (~16 feet) of non-pumpable RCRA hazardous waste sludge contained within a 200,000-gallon AST at a former waste treatment facility in Vineland, New Jersey. This challenging DESIGN-BUILD project included sludge removal and disposal, interior decontamination, and tank demolition. Work was safely performed with direct USEPA Region 2 oversight in Level C PPE during in freezing winter conditions under COVID-19 “Stop-the-Spread” safety protocol.
Residential MGP Site |Coal Tar Impacted Soils Remediation
Multi-phase $7.8M project in Sea Isle City, New Jersey showcased by the Owner as a “model residential coal tar site remediation” at a National Utilities Conference. Excavation at this coastal site was extended into the prolific Cohansey aquifer necessitating groundwater management, surface water control, and stabilization of excavated materials for off-site transportation and disposal.
Removed 25,000+ tons of coal impacted soil and sediment from multiple affected residential properties working within a temporary enclosure under negative air during one phase. Demolished and removed subsurface concrete structures associated with the former gas plant. Safely installed sheet pile immediately adjacent to roadways, sidewalks, and occupied residential structures. Installed water diversion and dewatering systems. Operated mobile water treatment systems with permitted POTW discharge. Protected, relocated, removed, and restored various utilities (electric, gas, water, sewer, communication). Demolished and moved several multi-story residential structures. Restored residential properties (lawn, landscape, hardscape, utilities) and public rights-of-way (concrete sidewalks/curbing, asphalt roadways). Actively participated in community outreach programs.
Former Chemical Manufacturing Plant | HBW & Riverbed Cap Installation, Full Facility Closure
Multi-phase, multi-million dollar project at the former Cytec Warners Plant Site in Linden, New Jersey. The property was located along the banks of the Arthur Kill and Rahway River.
Rahway Riverbed Cap. This challenging project is the first of its type ever undertaken in New Jersey. CODE worked closely with the Owner and Engineer to DESIGN-BUILD a concrete cap and multi-layer armoring system to immobilize DDT-contaminated sediment/fill on the Rahway Riverbed. The project featured use of underwater divers, turbidity curtains and river barges; installation of a 360 LF sheet pile hydraulic barrier wall to a depth of 40 feet; and bulkhead repair.
Full Facility Closure. Gutted, decontaminated, and demolished 25 buildings for a $3.5M chemical plant shutdown. Decontaminated 350,000+ SF of interior building surfaces. Supervised asbestos abatement by licensed subcontractor. Cleaned and dismantled 30 transformers, 5 miles of overhead process piping, and 1,500 tanks and process vessels. Rigged out and salvaged equipment. Demolished a barge/unloading facility along the Rahway River. Crushed and recycled concrete, brick, masonry. Scrapped 1,400 tons of metal. Classified and disposed of 1,100 tons of RCRA hazardous waste.