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Environmental Job Market Trends in Canada 2014-2017

ECO Canada recently issued an Environmental Job Market Trends Report that shows that the environmental job market rebounded in Canada last year with 22.7 thousand job ads, reflecting a 9% increase from 2016 levels.  On the other hand, total job ads peaked in 2014 at 1.30 million, decreased to 1.07 million by 2016 (a drop of 18%) and slightly dipped in 2017 with 1.05 million job ads, reflecting a 2% decline.

  • Employment increases within key industries that employ a number of environmental workers, which includes professional, scientific and technical services;
  • Resurgence in goods-producing sectors such as manufacturing, construction, and energy; and
  • Provincial governments implementing climate change plans.

The report states that Ontario, Alberta and British Columbia are the provinces that have consistently shown the most demand for environmental professionals between 2014 and 2017.

Managers in financial and business services had the highest job ad growth rate with close to 30%, from 1,090 job ads in 2016 to 1,410 in 2017.  Agriculture/horticultural workers, technical inspectors/regulatory officers and engineers, with an environmental function attached to the roles, remained the most sought-after positions with 2,870, 3,020 and 2,110 job ads in 2017 respectively.

ECO Canada develops programs that help individuals build meaningful environmental careers, provides employers with resources to find and keep the best environmental practitioners and informs educators and governments of employment trends to ensure the ongoing prosperity of Canada’s growing environmental sector.

 

U.S. Environmental Industry generates $388 billion in revenues in 2017

The U.S. environmental industry generated revenues of $388 billion in 2017, up from $370 million in 2016, according to preliminary estimates by Environmental Business International Inc. (EBI), publisher of Environmental Business Journal (EBJ). The environmental industry’s annual growth rate of 4.8% in 2017 represents a steady increase from 3.6% in 2016 and 2.1% in 2015.

Every year, EBJ’s Annual Industry Overview presents estimates and forecasts for 13 business segments, in addition to offering perspective on how the environmental industry is responding to changing macroeconomic conditions and regulatory and policy trends. This year’s summary reviews conditions one year into the Trump Administration.

To purchase EBJ’s Annual Industry Overview and receive statistical summaries of the industry in 13 segments with multiple charts featuring revenues, growth, number of companies, forecasts, growth factors and revenue breakdowns by client, media and function, visit the EBI website.

Recent Trends in the Selection of Remedies at Superfund Sites

The U.S. Environmental Protection Agency (U.S. EPA) recently issued the 15th edition of its Superfund Remedy Report (SRR).  The report is a compilation of over 300 remedies selected in decision documents for contaminated sites on the National Priorities List (NPL) from October 2011 to September 2014.

Summary

Remedies included in the document relate to soil, groundwater, and sediment.  The remedies were counted by specific technology or approach, and also grouped into categories, such as treatment, on-site containment, off-site disposal, monitored natural attenuation (MNA), and institutional controls (ICs). The study analyzed remedies by media (i.e., soil, sediment, and groundwater), and the types of contaminants of concern (COCs) in those media. The evaluation also included vapor intrusion mitigation remedies.

The SRR compiles data on remedies and presents separate analyses for contaminants overall and contaminants in select media (soil, sediment and groundwater). This edition also includes a separate analysis of remedy and response action data for large sediment sites.

Dredging PCB-Contaminated sediment on the Hudson River

For the majority (78 percent) of the 1,540 Superfund sites with decision documents available, treatment has been selected, often in combination with other remedies. Most of these sites have more than one contaminated media, most frequently groundwater and soil. Most sites also have different types of contaminants of concern (COCs): more than half of sites address volatile organic compounds (VOCs), semivolatile organic compounds (SVOCs) and metals, while a quarter of sites address two of these groups.

For FYs 2012 to 2014, remedies were selected in 308 decision documents, including 242 RODs and ROD Amendments, and 66 ESDs with remedial components. Of the 308 decision documents, 188 (61 percent) include a remedy for source materials (such as soil and sediment) and 160 (52 percent) for groundwater. Remedies were also selected for soil gas and air related to vapor intrusion.

Source Remedies

For this three-year period, nearly half of decision documents with source remedies include treatment. A quarter of all source decision documents include in situ treatment. Soil vapor extraction, chemical treatment, and in situ thermal treatment are the most frequently selected in situ treatment technologies for sources with soil being the most common source medium addressed. Physical separation, recycling, and solidification/stabilization (S/S) are the most common ex situ treatment methods. Metals, polycyclic aromatic hydrocarbons (PAHs) and halogenated VOCs are the COCs most commonly addressed.

Table 1: Summary of Source Control Remedies

Treatment
• Chemical, biological, or physical means to reduce toxicity, mobility, or volume of contaminated source media

• Can be either in situ or ex situ

• examples include chemical treatment and in situ thermal treatment

On-site containment
• Examples include the use of caps, liners, covers, and landfilling on site
Off-site disposal
• Includes excavation and disposal at an off-site facility
Monitored natural attenuation (MNA)
• Reliance on natural processes

• Natural attenuation processes may include physical, chemical, and biological processes

Monitored natural recovery (MNR)
• Reliance on natural processes to reduce risk from sediments

• Natural attenuation processes may include physical, chemical, and biological processes

Enhanced monitored natural recovery (EMNR)
• Combines natural recovery with an engineered approach for sediments

• Typically includes placing a thin layer of clean sediment to accelerate the recovery process

Institutional controls
• Nonengineered instruments, such as administrative and legal controls, that help minimize the potential for human exposure to contamination and protect the integrity of the remedy

• Examples for source media include land use restrictions and access agreements

Other
• Source control remedies that do not fall into the categories of source control treatment, on-site containment, off-site disposal, MNA, MNR, EMNR, or engineering controls

• Examples include wetlands replacement and shoreline stabilization

Sediment Remedies

Of the 188 recent source decision documents, 39 include a remedy for sediments. Most of the sediment decision documents (87 percent) include dredging, excavation, off-site disposal or on-site containment as part of the selected remedy. Some treatment was also selected — for example, in situ amended caps and ex situ and in situ S/S. Examples of other remedies include wetlands replacement and enhanced or monitored natural recovery (EMNR or MNR). Two-thirds of the sediment decision documents include institutional controls (ICs). Metals, PAHs and polychlorinated biphenyls are the COCs most frequently addressed.

EPA also analyzed newly acquired remedy and response action data on the largest sediment sites, known as Tier 1 sediment sites. The data include 112 actions for 66 sites. Some of these actions have progressed to design or implementation. Most remedies for these sites include dredging and excavation (84 percent), 48 percent include residual caps, and 29 percent include engineered caps designed to isolate contaminants from the waterway. A quarter of the Tier 1 sites include MNR and 18 percent include EMNR.

The U.S. EPA analyzed the contaminants of concern (COCs) addressed by sediment remedies in recent decision documents.  Over three-quarters of these documents include metals. PCBs and PAHs are the next most frequent categories of COCs with 44 percent each, as seen in the Figure below.

Figure 1: Detailed COCs in Decision Documents with Sediment Remedies

Groundwater Remedies

For the 160 groundwater decision documents signed in FYs 2012 to 2014, the groundwater remedies continue to be primarily a mix of in situ treatment, pump and treat (P&T), and monitored natural attenuation; most also include ICs. The use of in situ groundwater treatment continues to rise and is now selected in over half of groundwater decision documents. Of these, bioremediation and chemical treatment remain the most frequently selected. The majority of in situ bioremediation remedies specify anaerobic bioremediation, and more than half of chemical treatment remedies specify in situ chemical oxidation. The selection of P&T in groundwater decision documents has decreased significantly since the early 1990s and reached its lowest, 17 percent, in FY 2014. Containment technologies (vertical engineered barriers such as slurry walls) were selected at a few sites. By far, halogenated VOCs (primarily chlorinated VOCs) are the most common type of groundwater COC, addressed in 72 percent of recent groundwater decision documents.

Table 2. Summary of Groundwater and Vapor Intrusion Remedy Categories

Groundwater
In situ treatment
• Treatment of groundwater in place without extraction from an aquifer

• Examples include in situ chemical oxidation and in situ bioremediation

Pump and treat (P&T)
• Pumping of groundwater from a well or trench, followed by aboveground treatment

• Examples of aboveground treatment include air stripping and granular activated carbon

Monitored natural attenuation (MNA)
• Reliance on natural attenuation processes

• Natural attenuation processes may include physical, chemical, and biological processes

Containment
• Containment of groundwater using a vertical, engineered, subsurface, impermeable barrier
Institutional controls
• Examples include drilling restrictions and water supply use restrictions
Alternative water supply
• Examples include installing new water supply wells, providing bottled water or extending a municipal water supply
Other
• Groundwater remedies that do not fall into the categories of in situ treatment, P&T, MNA, containment, institutional controls, or alternative water supply

• Examples include drainage/erosion control and wetlands restoration

Vapor intrusion
Mitigation
• Mitigation of soil gas or indoor air to reduce exposure to vapor contamination in buildings

• Examples include active depressurization technologies and passive barriers

Institutional controls
• Examples include land use restrictions and vapor intrusion mitigation for new buildings

Vapor Intrusion Remedies

EPA selected vapor intrusion mitigation for existing structures in nine of the recent decision documents, and ICs for either existing structures or future construction in 34 of these documents. Some ICs restrict the future use of structures to avoid vapor intrusion exposure and others require the installation of mitigation systems as part of future construction. Active depressurization was the most common mitigation method specified, followed by passive barriers and subslab ventilation systems.

Combined and Optimized Remedies

In this report, the U.S. EPA also discusses the use of combined remedies and optimization reviews. The combined remedy highlights provide examples of recent decision documents where remedies are combined spatially or in sequence. The optimization highlights provide examples of how optimization efforts have informed remedy decisions in recent decision documents.

The remedy and site information provided in this report can help identify program needs for expanded technical information and support. For example, growing use of in situ groundwater technologies suggests the need for additional knowledge and support associated with those technologies. This analysis also provides information of value to stakeholders including technology developers; consulting and engineering firms; and federal, state, and tribal remediation professionals. In particular, developers and service providers can gain insight into the demand for specific remedial technologies.

 Conclusions

The analysis of most recent Superfund decision documents shows continued selection of a full range of treatment, containment, and disposal technologies and approaches for both source material and groundwater. Selection of some remedies is increasing in frequency (such as in situ groundwater technologies), while others are decreasing (such as pump-and-treat). Remedial approaches, including in situ bioremediation, are often combined in time or space to address different areas of the site or applied sequentially. Remedy optimization and reevaluation has resulted in changes to previously selected or implemented cleanup approaches. Overall, most Superfund sites contain different types of COCs: more than half of sites with remedies address VOCs, SVOCs, and metals/metalloids, and almost a quarter of sites address two of these groups.