The following discussion and analysis of our financial condition and results of
operations should be read in conjunction with our audited consolidated financial
statements and related notes and other information included in Item 8.
"Financial Statements and Supplementary Data." This discussion contains
forward-looking statements that involve risks and uncertainties. Our actual
results could differ materially from such forward-looking statements. Factors
that could cause or contribute to those differences include, but are not limited
to, those identified below and those discussed in Item 1A. "Risk Factors" and
elsewhere in this Annual Report on Form 10-K. See "Forward-looking Statements."

Overview



Since our inception in 2012, our mission has been to help clients and
communities meet their environmental goals and needs. According to data derived
from a 2022 Environmental Industry Study prepared by Environmental Business
International, Inc., or EBI, which we commissioned, the global environmental
industry is estimated to be approximately $1.34 trillion, with $444.0 billion
concentrated in the United States.

Our Segments

We provide environmental services to our clients through three business segments-Assessment, Permitting and Response, Measurement and Analysis and Remediation and Reuse. For more information on each of our operating segments, see Item 1. "Business" and our audited consolidated financial statements included in Item 8. "Financial Statements and Supplementary Data."

Assessment, Permitting and Response



Through our Assessment, Permitting and Response segment, we provide scientific
advisory and consulting services to support environmental assessments,
environmental emergency response, and environmental audits and permits for
current operations, facility upgrades, new projects, decommissioning projects
and development projects. Our technical advisory and consulting offerings
include regulatory compliance support and planning, environmental, ecosystem and
toxicological assessments and support during responses to environmental
disruption. We help clients navigate regulations at the local, state, provincial
and federal levels. In addition to environmental toxicology, and given our
expertise in helping businesses plan for and respond to disruptions, our
scientists and response teams have helped clients navigate their preparation for
and response to the COVID-19 pandemic.

Measurement and Analysis



Through our Measurement and Analysis segment, our highly credentialed teams test
and analyze air, water and soil to determine concentrations of contaminants, as
well as the toxicological impact of contaminants on flora, fauna and human
health. Our offerings include source and ambient air testing and monitoring,
leak detection and advanced analytical laboratory services such as air, storm
water, wastewater and drinking water analysis.

Remediation and Reuse



Through our Remediation and Reuse segment, we provide clients with engineering,
design, and implementation services, primarily to treat contaminated water,
remove contaminants from soil or create biogas from waste. We do not own the
properties or facilities at which we implement these projects or the underlying
liabilities, nor do we own material amounts of the equipment used in projects;
instead, we assist our clients in designing solutions, managing projects and
mitigating their environmental risks and liabilities.


These operating segments have been structured and organized to align with how we
view and manage the business with the full lifecycle of our clients' targeted
environmental concerns and needs in mind. Within each segment, we cover similar
service offerings, regulatory frameworks, internal operating structures and
client types. Corporate activities not directly related to segment performance,
including general corporate expenses, interest and taxes, are reported
separately.

Key Factors that Affect Our Business and Our Results

Our operating results and financial performance are influenced by a variety of internal and external trends and other factors. Some of the more important factors are discussed briefly below.


                                       43
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Acquisitions



We have been, and expect to continue to be, an acquisitive company. Acquisitions
have expanded our environmental service capabilities across all three segments,
our access to technology, as well as our geographic reach in the United States,
Canada and Australia. See Item 1. "Business-Strategic Acquisitions." The table
below sets forth the number of acquisitions completed in each of the last three
fiscal years, fiscal year revenues generated by and the percentage of total
annual revenues attributable to those acquisitions:

                                               Fiscal Year        Percentage
                                                Revenues           of Fiscal
                          Acquisitions        Attributable           Year
(revenues in thousands)     Completed        to Acquisitions       Revenues
Fiscal year 2022                      5     $          20,154             3.7 %
Fiscal year 2021                      6                33,738             6.2 %
Fiscal year 2020                      3                82,441            25.1 %


Revenues from acquired companies exclude intercompany revenues from revenue
synergies realized between business lines within operating segments, as these
are eliminated at the consolidated segment and Company level. We expect our
revenue growth to continue to be driven in significant part by acquisitions. See
Note 8 to our audited consolidated financial statements included in Item 8.
"Financial Statements and Supplementary Data."

As a result of our acquisitions, goodwill and other intangible assets represent
a significant proportion of our total assets, and amortization of intangible
assets has historically been a significant expense. Our historical financial
statements also include other acquisition-related costs, including costs
relating to external legal support, diligence and valuation services and other
transaction and integration-related matters. In addition, in any year gains and
losses from changes in the fair value of business acquisition contingencies such
as earn outs could be significant. The amount of each for the last three fiscal
years is:

                                                  Year Ended December 31,
(in thousands)                                 2022         2021         2020
Amortization expense                         $ 36,053     $ 35,154     $ 28,871
Acquisition-related costs                       1,891        2,088        4,344

Fair value changes in business acquisition


  contingencies                                (3,227 )     24,372       

12,942

We expect that amortization of identifiable intangible assets and other acquisition-related costs, assuming we continue to acquire, will continue to be significant.



Additionally, we made earn-out payments of $30.0 million and $50.0 million in
March 2022 and April 2021, respectively, in connection with our CTEH
acquisition. $25.0 million of the 2021 CTEH earn-out payment was made in the
form of shares of our common stock. In connection with our Vista, Sensible,
Environmental Standards and Huco acquisitions, we may make up to $9.5 million in
aggregate earn-out payments between the years 2023 and 2026, up to $4.0 million
of which may be paid in cash. See Note 8 to our audited consolidated financial
statements included in Item 8. "Financial Statements and Supplementary Data."

COVID-19



To date, COVID-19 related adverse impacts such as temporarily delayed project
start dates, particularly within our Remediation and Reuse segment, exiting
certain service lines and employee quarantines have not had a material adverse
effect on our reported results or our liquidity. On the other hand, we have seen
benefits from COVID-19 given client demand for CTEH's toxicology and response
services, which represented a meaningful revenue stream, particularly in the
years ended December 31, 2021 and 2020, and a declining revenue stream in 2022
as the pandemic has subsided, and one that we may not be able to replace in
future periods. Although many parts of our business saw some impact from
COVID-19, in the aggregate, our overall business benefitted from COVID-19 during
the years ended December 31, 2022, 2021 and 2020, primarily as a result of
COVID-19 response work performed by CTEH. COVID-19 has had an impact on our
historical seasonality trends.

On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act, or
the CARES Act, was enacted. The CARES Act included several significant
provisions for corporations, including those pertaining to net operating losses,
interest deductions and payroll tax benefits. We utilized certain of these
provisions in 2020, including the deferral of the employer side social security
                                       44
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payments for payroll for the eligible portion of the year. In total, we deferred
approximately $5.0 million of 2020 payments to 2021 and 2022, of which $2.5
million was repaid in December 2021 and the remaining amount was paid in the
fourth quarter of 2022.

Organic Growth

We define organic growth as the change in revenues excluding revenues from
acquisitions for the first twelve months following the date of acquisition and
excluding revenues from businesses disposed of or discontinued. As a result of
the significance of CTEH to Montrose and the potential annual volatility in
CTEH's revenues due to the emergency response aspect of their business, we also
disclose organic growth without the annual organic revenue growth of CTEH. We
expect to continue to disclose organic revenue growth with and without CTEH.
Management uses organic growth as one of the means by which it assesses our
results of operations. Organic growth is not, however, a measure of revenue
growth calculated in accordance with U.S. generally accepted accounting
principles, or GAAP, and should be considered in conjunction with revenue growth
calculated in accordance with GAAP. We have grown organically over the long term
and expect to continue to do so.

Discontinued Service Lines and Contracts



Periodically, or when circumstances warrant, we evaluate the performance of our
business services to ensure that performance and outlook are consistent with
expectations. The decision to exit the businesses outlined below were reached
after careful consideration of the relevant risks and rewards associated with
the particular business.

As part of this evaluation, during the fourth quarter of 2022, we determined to
exit our start-up lab in Berkley, California and terminate the related
positions. This discontinued start-up, which was included in our Measurement and
Analysis segment, did not generate any material revenue during the years ended
December 31, 2022, 2021 and 2020. We recognized an impairment loss of $0.7
million in connection with vacating the related real estate. See Note 7 to our
audited consolidated financial statements included in Item 8. "Financial
Statements and Supplementary Data."

During the second quarter of 2022, we determined to exit all legacy water
treatment and biogas operations and maintenance contracts, collectively, the
Discontinued O&M Contracts, as well as the related positions. The work
associated with these contracts is non-specialized and commoditized, and it was
determined that the risk of facility failure taken on by the Company as the O&M
contractor no longer justified the low margins in these contracts. Revenue from
our water treatment and biogas operations and maintenance contracts, which were
included in the results of our Remediation and Reuse segment, were $3.6 million,
$12.1 million and $13.3 million in the years ended December 31, 2022, 2021 and
2020, respectively. This decision did not impact the Company's specialized PFAS
water treatment operations and maintenance contracts.

During the first quarter of 2020, we determined to scale back operations of our
environmental lab in Berkeley, California, and to exit our non-specialized
municipal water engineering service line and our food-waste biogas engineering
service line, collectively, the Discontinued Service Lines. The factors
underlying these decisions were accelerated and amplified by the COVID-19
pandemic, which for example, has made the collection of commercial food waste
used in biodigesters less consistent and delayed the approval or initiation of
certain projects dependent on municipal or state funding. As a part of
discontinuing these service lines, a process which was completed in the second
quarter of 2020, we eliminated select personnel and, in the first quarter of
2020, booked an additional bad debt reserve related to the increased uncertainty
around the ability to collect on receivables related to these service lines.
Revenue from our non-specialized municipal water engineering service line and
our food-waste biogas engineering, which were included in the results of our
Remediation and Reuse segment, were $1.4 million in the year ended December 31,
2020. The revenues from our Berkeley environmental lab related to the
Discontinued Service Lines, which were included in the results of our
Measurement and Analysis segment, were $2.4 million in the year ended December
31, 2020. We no longer generate any revenues from these Discontinued Service
Lines.

Revenue Mix

Our segments generate different levels of profitability and, accordingly, shifts
in the mix of revenues between segments can impact our consolidated reported net
income, net loss margin, Segment Adjusted EBITDA and Segment Adjusted EBITDA
margin from quarter to quarter and year to year. Inter-company revenues between
business lines within segments have been eliminated. See Note 21 to our audited
consolidated financial statements included in Item 8. "Financial Statements and
Supplementary Data."
                                       45
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Financing Costs



On April 13, 2020, we entered into the 2020 Credit Facility providing for a
$225.0 million credit facility comprised of a $175.0 million term loan and a
$50.0 million revolving credit facility, and used the proceeds therefrom to
repay in full all amounts outstanding under our prior senior secured credit
facility. We incurred debt extinguishment costs of $1.4 million in connection
with this refinancing. Effective October 6, 2020, the Company amended its 2020
Credit Facility to provide for a reduction on the applicable interest rate on
the term loan from LIBOR plus 5.0% with a 1.0% LIBOR floor to LIBOR plus 4.5%
with a 1.0% LIBOR floor. The revolver interest rate remained unchanged.

On April 27, 2021, we entered into the 2021 Credit Facility and repaid all
amounts outstanding under the 2020 Credit Facility. The 2021 Credit Facility
consists of a $175.0 million term loan and a $125.0 million revolving credit
facility. The revolving credit facility includes a $20.0 million sublimit for
the issuance of letters of credit. The interest rate on the 2021 Credit Facility
varies depending on leverage, with a minimum of LIBOR plus 1.5% and a maximum of
LIBOR plus 2.5%. We incurred debt extinguishment costs of $4.1 million in
connection with this refinancing.

Furthermore, effective January 27, 2022, we entered into an interest rate swap
transaction fixing the floating component of the interest rate on $100.0 million
of borrowings to 1.39% until January 27, 2025.

Interest expense, net was $5.2 million, $11.6 million (inclusive of the $4.1
million loss on extinguishment of the 2020 Credit Facility) and $13.8 million
(inclusive of the $1.4 million loss on extinguishment of the Prior Credit
Facility) in the years ended December 31, 2022, 2021 and 2020, respectively. We
expect interest expense to remain a significant cost as we continue to leverage
our credit facility to support our operations and future acquisitions.

See Note 14 to our audited consolidated financial statements included in Item 8. "Financial Statements and Supplementary Data."

Corporate and Operational Infrastructure Investments



Our historical operating results reflect the impact of our ongoing investments
in our corporate infrastructure to support our growth. We have made and expect
to continue to make investments in our business platform that we believe have
laid the foundation for continued growth. Investments in logistics, quality,
risk management, sales and marketing, safety, human resources, research and
development, finance and information technology and other areas enable us to
support continued growth. These investments should allow us to improve our
margins over time.

Seasonality



Due to the field-based nature of certain of our services, weather patterns
generally impact our field-based teams' ability to operate in the winter months.
As a result, our operating results in our Measurement and Analysis segment
experience some quarterly variability with generally lower revenues and lower
earnings in the first and fourth quarters and higher overall revenues and
earnings in the second and third quarters. As we continue to grow and expand
into new geographies and service lines, quarterly variability in our Measurement
and Analysis segment may deviate from historical trends.

Earnings Volatility



In addition to the impact of seasonality on earnings, the acquisition of CTEH
exposes us to potentially significant revenue and earnings fluctuations tied
both to the timing of large environmental emergency response projects following
an incident or natural disaster, and more recently, the benefit from COVID-19
related work. The benefit from COVID-19 related work began in the third quarter
of 2020, peaked in the first quarter of 2021 and has declined each subsequent
quarter, although demand has continued through December 31, 2022. Demand for
COVID-19 related or environmental emergency response services provided by CTEH
remains difficult to predict and as a result, we may have experienced revenues
and earnings in both 2022 and 2021 that are not indicative of future results,
making those periods particularly difficult comparisons for future periods. We
do however expect that a portion of expectedly declining COVID-19 response
revenues will be offset by other CTEH service line revenues such as
environmental emergency responses as internal resources are freed up from the
COVID-19 response work. Earnings volatility is also driven by the timing of
large projects, particularly in our Remediation and Reuse segment, and the
impact of acquisitions. As a result of these factors, and because demand for
environmental services is not driven by specific or predictable patterns in one
or more fiscal quarters, our business is better assessed based on yearly
results.
                                       46
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Cybersecurity



As previously disclosed, on June 11, 2022 we were the target of an organized
ransomware attack on our IT systems that led to the temporary disruption of our
regular operations. The most affected portion of the business was our Enthalpy
lab network. Upon discovery of the attack, we immediately began restoration and
remediation efforts. By June 30, 2022, we had substantially restored our
operations. The Company's financial systems are cloud based and were not
affected. We engaged third party experts, including cyber legal counsel and a
cybersecurity firm, to perform a fulsome forensic investigation of this attack
and we promptly notified federal law enforcement. Based on the results of the
investigation, we do not believe there has been any misuse of confidential or
sensitive client data, have made notifications to clients, and have proactively
addressed client concerns regarding our security environment. Furthermore, we
have identified a limited number of individuals whose personally identifiable
information may have been accessed from our systems and have made appropriate
notifications to such individuals and required regulators. The Company has
insurance coverage, subject to a $0.3 million deductible, against recovery costs
and business interruption resulting from cyber-attacks. As of December 31, 2022,
upon final agreement by the parties, the Company recorded an insurance claim
receivable of $1.0 million. The insurance claim receivable was collected in full
in January 2023. We believe that the impact on revenues was approximately $1.5
million and the net impact on income before tax in the year ended December 31,
2022 was approximately $0.5 million (net of insurance settlement).

Results of Operations

Year Ended December 31, 2022 Compared to the Year Ended December 31, 2021



                                                  Year Ended December 31,
(in thousands except per share data)                2022             2021
Statements of operations data:
Revenues                                        $    544,416       $ 

546,413

Cost of revenues (exclusive of depreciation and


  amortization)                                      351,882         

369,028

Selling, general and administrative expense 176,295 117,658 Fair value changes in business acquisition


  contingencies                                       (3,227 )        

24,372


Depreciation and amortization                         47,479          44,810
Loss from operations                            $    (28,013 )     $  (9,455 )
Other income (expense)                                 3,683          (2,546 )
Interest expense, net                                 (5,239 )       (11,615 )
Loss before income taxes                             (29,569 )       (23,616 )
Income tax expense                                     2,250           1,709
Net loss                                        $    (31,819 )     $ (25,325 )
Series A-2 dividend payment                          (16,400 )       (16,400 )
Net loss attributable to common stockholders    $    (48,219 )     $ (41,725 )
Weighted average number of shares
  (basic and diluted)                                 29,688          

26,724


Loss per share - basic and diluted              $      (1.62 )     $   (1.56 )



                                       47

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Revenues



For the year ended December 31, 2022, revenues were $544.4 million, a decrease
of $2.0 million or 0.4% from the year ended December 31, 2021. The period over
period decrease in revenues was primarily driven by an expected reduction in
revenue from CTEH due to lower demand for COVID-19 related services, of $117.6
million, and exiting the Discontinued O&M Contracts. The decrease was mostly
offset by strong organic growth in our Measurement and Analysis and Remediation
and Reuse operating segments, and the businesses in our Assessment, Permitting
and Response operating segment other then CTEH, which contributed $71.1 million
in organic revenue. The decrease was offset to a lesser extent by acquisitions
completed in the year ended December 31, 2022, as well as by 2021 acquisitions
prior to their one-year anniversary date, which performed well and captured
revenue synergies as part of Montrose. In the aggregate, 2021 and 2022
acquisitions contributed revenues of $44.5 million.

Including CTEH, our organic revenue declined 7% in the year ended December 31, 2022. Excluding CTEH, our organic revenue growth was 26% in the year ended December 31, 2022.



Revenue from CTEH was $113.9 million in the year ended December 31, 2022 as
compared to $231.5 million in the year ended December 31, 2021. Total revenue
from COVID-19 related services was $65.2 million and $189.9 million in the years
ended December 31, 2022 and 2021, respectively. Discontinued O&M Contracts
generated revenues of $3.6 million and $12.1 million in the years ended December
31, 2022 and 2021, respectively.

Revenue by segment, and as a percentage of total revenues, was as follows:



                                                            Year Ended December 31,
                                                          % of Total                     % of Total
                                           Revenues        Revenues       Revenues        Revenues
(revenue in thousands)                                2022                           2021
Assessment, Permitting and Response        $ 187,234             34.4 %   $ 261,865             47.9 %
Measurement and Analysis                     172,432             31.7 %     153,208             28.0 %
Remediation and Reuse                        184,750             33.9 %     131,340             24.0 %
                                           $ 544,416                      $ 546,413

See "-Segment Results of Operations" below.

Cost of Revenues

Cost of revenues consists of all direct costs required to provide services, including fixed and variable direct labor costs, equipment rental and other outside services, field and lab supplies, vehicle costs and travel-related expenses. Variable costs of revenues generally follow the same seasonality trends as revenue, while fixed costs tend to change primarily as a result of acquisitions and investments in business infrastructure.



For the year ended December 31, 2022, cost of revenues was $351.9 million or
64.6% of revenues, and was comprised of direct labor of $155.0 million, outside
services (including contracted labor, laboratory, shipping and freight and other
outside services) of $83.3 million, field supplies, testing supplies and
equipment rental of $77.9 million, project-related travel expenses of $19.3
million and other direct costs of $16.4 million.

For the year ended December 31, 2021, cost of revenues was $369.0 million or
67.5% of revenues, and was comprised of direct labor of $147.3 million, outside
services (including contracted labor, laboratory, shipping and freight and other
outside services) of $143.3 million, field supplies, testing supplies and
equipment rental of $50.2 million, project-related travel expenses of $17.8
million and other direct costs of $10.4 million.

For the year ended December 31, 2022, cost of revenues as a percentage of
revenue decreased 2.9% from the year ended December 31, 2021, as a result of
significantly lower outside service costs in 2022 when compared to 2021 driven
primarily by a
                                       48
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decrease in external lab expenses needed to support CTEH's COVID-19 response work during 2022, partially offset by higher equipment costs primarily to support higher water treatment and biogas revenues.

Selling, General and Administrative Expense

Selling, general and administrative expenses consist of general corporate overhead, including executive, legal, finance, safety, risk management, human resource, marketing and information technology related costs, as well as indirect operational costs of labor, rent, insurance and stock-based compensation.



For the year ended December 31, 2022, selling, general and administrative
expense was $176.3 million, an increase of $58.6 million or 49.8% versus the
year ended December 31, 2021. This increase was primarily driven by $33.0
million related to an increase in stock compensation expense primarily related
to a one-time grant of restricted stock awards and stock appreciation rights to
certain executives and selected employees (See Note 19 to our audited
consolidated financial statements included in Item 8. "Financial Statements and
Supplementary Data."), $10.2 million from selling, general and administrative
expense pertaining to companies we acquired in 2022 and from 2021 acquisitions
prior to their one-year anniversary date, $5.4 million related to the higher
labor and medical benefit costs, primarily reflecting inflationary increases, an
increase in headcount to support growth in our PFAS water treatment business,
and investments in corporate infrastructure (primarily administrative,
marketing, finance, IT, legal and human resources) and $3.1 million was from an
increase in the defined contribution plan employer contributions following the
reinstatement of employer matching during the second quarter of 2021, as well as
higher travel and office function expenses. See Item 7A. "Quantitative and
Qualitative Disclosures About Market Risk" for additional information regarding
the impact of inflation on our business.

For the year ended December 31, 2022, selling, general and administrative expense was comprised of indirect labor of $80.6 million, stock-based compensation of $41.8 million, facilities costs of $18.2 million, acquisition-related costs of $1.9 million, a bad debt recovery of $(1.1) million, and other costs (including software, travel, insurance, legal, consulting and audit services) of $34.9 million.



For the year ended December 31, 2021, selling, general and administrative
expense of $117.7 million was comprised of indirect labor of $61.2 million,
facilities costs of $14.7 million, stock-based compensation of $8.8 million,
acquisition-related costs of $2.1 million, bad debt expense of $1.1 million, and
other costs (including software, travel, insurance, legal, consulting and audit
services) of $29.8 million.

Fair Value Changes in Business Acquisition Contingencies



For the year ended December 31, 2022, fair value changes in business acquisition
contingencies resulted in a gain of $3.2 million versus an expense of $24.4
million for the year ended December 31, 2021. The majority of the change in
value in the year ended December 31, 2022, was attributable to a $ 3.5 million
gain related to acquisitions' 338(h)(10) elections make-whole tax accruals. The
majority of the change in value in the year ended December 31, 2021 period was
attributable to the CTEH earn-outs. See "-Key Factors that Affect Our Business
and Our Results -Acquisitions" and Notes 8 and 15 to our audited consolidated
financial statements included in Item 8. "Financial Statements and Supplementary
Data."

Depreciation and Amortization



Depreciation and amortization expense for the year ended December 31, 2022, was
$47.5 million and was comprised of amortization of finite lived intangibles of
$36.1 million, arising as a result of our acquisition activity, depreciation of
property and equipment of $7.2 million and finance leases right-of-use asset
amortization of $4.2 million.

Depreciation and amortization expense for the year ended December 31, 2021, was
$44.8 million and was comprised of amortization of finite lived intangibles of
$35.2 million, depreciation of property and equipment of $6.4 million and
finance leases right-of-use asset amortization of $3.2 million.

The increase in amortization, depreciation of property and equipment and the
amortization of finance leases right-of-use asset for the year ended December
31, 2022 versus the year ended December 31, 2021, was primarily a result of
acquisitions. See Notes 6, 7, 8 and 9 to our audited consolidated financial
statements included in Item 8. "Financial Statements and Supplementary Data."
                                       49
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Other Income (Expense)



Other income for the year ended December 31, 2022 of $3.7 million was driven by
a gain related to the fair value adjustment on our interest rate swap of $6.0
million which was partially offset by an expense of $2.7 million related to the
fair value adjustment of the Series A-2 preferred stock conversion option and
$0.7 million impairment loss related to the decision to exit the Berkley lab.
Other expense for the year ended December 31, 2021 of $2.5 million was driven
primarily by fair value adjustments related to the Series A-2 preferred stock
conversion option. See Notes 7, 15 and 18 to our audited consolidated financial
statements included in Item 8. "Financial Statements and Supplementary Data."

Interest Expense, Net



Interest expense, net incurred in the year ended December 31, 2022, was $5.2
million, compared to $11.6 million for the year ended December 31, 2021. The
decrease in interest expense was driven by lower outstanding debt balances
during the year ended December 31, 2022 when compared to the year ended December
31, 2021, as well as the $4.1 million loss on extinguishment of debt realized in
the year ended December 31, 2021 in connection with the repayment in full of the
2020 Credit Facility. See "-Key Factors that Affect Our Business and Our
Results-Financing Costs" and Note 14 to our audited consolidated financial
statements included in Item 8. "Financial Statements and Supplementary Data."

Income Tax Expense



Income tax expense was $2.3 million for the year ended December 31, 2022,
compared to an income tax expense of $1.7 million for the year ended December
31, 2021. The difference between our effective tax rate of 7.7% and the federal
statutory rate of 21.0% is primarily attributable to items recorded for GAAP but
permanently disallowed for U.S. federal income tax purposes, recognition of a
U.S. federal and state valuation allowance of $30.6 million, state and foreign
income tax provisions and Global Intangible Low Taxed Income.

Year Ended December 31, 2021 Compared to the Year Ended December 31, 2020



                                                    Year Ended December 31,
(in thousands except per share data)                  2021             2020
Statements of operations data:
Revenues                                          $    546,413      $  

328,243

Cost of revenues (exclusive of depreciation and


  amortization)                                        369,028         

215,492


Selling, general and administrative expense            117,658          

85,546

Fair value changes in business acquisition


  contingencies                                         24,372          

12,942


Depreciation and amortization                           44,810          37,274
Loss from operations                              $     (9,455 )    $  (23,011 )
Other expense                                           (2,546 )       (20,268 )
Interest expense, net                                  (11,615 )       (13,819 )
Loss before income taxes                               (23,616 )       (57,098 )
Income tax expense                                       1,709             851
Net loss                                          $    (25,325 )    $  (57,949 )
Accretion of redeemable preferred stock                      -         (17,601 )
Series A-1 deemed dividend                                   -         (24,341 )
Series A-2 dividend payment                            (16,400 )        (6,970 )
Net loss attributable to common stockholders      $    (41,725 )    $ (106,861 )
Weighted average number of shares
  (basic and diluted)                                   26,724          

16,479


Loss per share - basic and diluted                $      (1.56 )    $    (6.48 )



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Revenues



For the year ended December 31, 2021, we had revenues of $546.4 million, an
increase of $218.2 million or 66.5% over the year ended December 31, 2020.
Excluding revenues from Discontinued Service Lines of zero and $3.8 million in
the year ended December 31, 2021 and December 31, 2020, respectively, revenues
increased $ 222.0 million or 68.4%. The period over period increase in revenues
was driven by significant growth and a full twelve-month period of results from
CTEH, which was acquired in the second quarter of 2020, significant organic
growth for the rest of the company (excluding CTEH) and acquisitions completed
after the year ended December 31, 2020, which contributed $33.7 million in
revenues during the year ended December 31, 2021. Organic growth for the year
ended December 31, 2021, was 37% including CTEH, and 17%, excluding CTEH. As was
the case in the prior year, all segments continue to be impacted by COVID-19 in
2021, however, in the current year, COVID-19 related project delays and other
impacts were more than offset by COVID-19 response work in our Assessment,
Permitting and Response segment. Revenues from CTEH were $231.5 million in year
ended December 31, 2021 as compared to $82.4 million in the year ended December
31, 2020. Revenue by segment, and as a percentage of total revenues, was as
follows:

                                                            Year Ended December 31,
(revenue in thousands)                                2021                           2020
                                                          % of Total                     % of Total
                                           Revenues        Revenues       Revenues        Revenues
Assessment, Permitting and Response        $ 261,865             47.9 %   $  98,521             30.0 %
Measurement and Analysis                     153,208             28.0       151,557             46.2
Remediation and Reuse                        131,340             24.0        78,165             23.8
                                           $ 546,413                      $ 328,243

See "-Segment Results of Operations" below.

Cost of Revenues



For the year ended December 31, 2021, cost of revenues was $369.0 million or
67.5% of revenues, and was comprised of direct labor of $147.3 million, outside
services (including contracted labor, laboratory, shipping and freight and other
outside services) of $143.3 million, field supplies, testing supplies and
equipment rental of $50.2 million, project-related travel expenses of $17.8
million and other direct costs of $10.4 million.


For the year ended December 31, 2021, cost of revenues as a percentage of
revenue increased 1.9% from the prior year, as a result of significantly higher
outside service costs driven primarily by external lab expenses to support the
increase in CTEH's COVID-19 revenues. The increase was partially offset by lower
labor as a percentage of revenue primarily attributable to a shift in roles and
responsibilities of certain employees from providing direct field support to
providing more specialized, multi-location overhead support functions (such as
accounting, HR and management) as result of acquisitions and growth in our
business. These changes in employee roles resulted in a decrease in labor costs
recorded as cost of revenues and a corresponding increase in labor costs
recorded as selling, general and administrative expense in the current year.


For the year ended December 31, 2020, cost of revenues was $215.5 million or
65.7% of revenues, and was comprised of direct labor of $117.8 million, outside
services (including contracted labor, laboratory, shipping and freight and other
outside services) of $50.9 million, field supplies, testing supplies and
equipment rental of $23.2 million, project-related travel expenses of $11.8
million and other direct costs of $11.8 million.

Selling, General and Administrative Expense



For the year ended December 31, 2021, selling, general and administrative
expense was $117.7 million, an increase of $32.2 million or 37.5% versus the
prior year, of which $6.2 million was from selling, general and administrative
expense pertaining to companies we acquired in 2021. The remaining $26.0 million
increase was primarily due to an increase in stock-based compensation expense of
$5.5 million, and an increase in public company related costs of $4.1 million, a
full year of selling, general and administrative expenses for CTEH, which was
acquired in April 2020, the impact of the shift of employee roles and
responsibilities as described above, and an increase in investments in corporate
infrastructure (primarily sales and marketing, finance, administrative, IT,
legal and human resources). These increases were partially offset by a decrease
in IPO-related costs of $6.9 million, a decrease in bad debt of $3.4 million,
primarily related to the Discontinued Service Lines and a decrease in
acquisition related costs of $2.3 million. As a percentage of revenue, selling,
general and administrative expenses decreased to 21.5% in fiscal year 2021 from
26.1% in fiscal year
                                       51
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2020.




For the year ended December 31, 2021, selling, general and administrative
expense was comprised of indirect labor of $61.2 million, facilities costs of
$14.7 million, stock-based compensation of $8.8 million, acquisition-related
costs of $2.1 million, bad debt expense of $1.1 million, and other costs
(including software, travel, insurance, legal, consulting and audit services) of
$29.8 million.


For the year ended December 31, 2020, selling, general and administrative expense of $85.5 million was comprised of indirect labor of $41.0 million, facilities costs of $12.4 million, IPO-related costs of $6.9 million, stock-based compensation of $3.3 million, acquisition-related costs of $4.3 million, bad debt expense of $4.5 million and other costs (including software, travel, insurance, legal, consulting and audit services) of $13.1 million.

Fair Value Changes in Business Acquisition Contingencies



For the year ended December 31, 2021, fair value changes in business acquisition
contingencies were $24.4 million, an increase of $11.5 million versus $12.9
million for the year ended December 31, 2020. The majority of the change in
value in both periods was attributable to the achievement of the maximum 2020
and 2021 CTEH earn-outs, respectively. See Notes 8 and 15 to our audited
consolidated financial statements included in Item 8. "Financial Statements and
Supplementary Data."

Depreciation and Amortization



Depreciation and amortization expense for the year ended December 31, 2021, was
$44.8 million and was comprised of amortization of finite lived intangibles of
$35.2 million, arising as a result of our acquisition activity, depreciation of
property and equipment of $6.4 million and finance leases right-of-use asset
amortization of $3.2 million.

Depreciation and amortization expense for the year ended December 31, 2020, was
$37.3 million and was comprised of amortization of finite lived intangibles of
$28.9 million and depreciation of property and equipment of $8.4 million.

The increase in amortization for the year ended December 31, 2021 versus the
prior year is primarily a result of acquisitions. The decrease in depreciation
of property and equipment, and the increase in amortization of finance leases
right-of-use asset, is primarily a result of the adoption of Accounting Standard
Codification ("ASC") 842, partially offset by the impact of acquisitions on
depreciation. See Notes 7, 8 and 9 to our audited consolidated financial
statements included in Item 8. "Financial Statements and Supplementary Data."

Other Expense



Other expense for the year ended December 31, 2021 of $2.5 million was driven
primarily by fair value adjustments related to the Series A-2 preferred stock
conversion option. Other expense for the year ended December 31, 2020 of $20.3
million was driven primarily by fair value adjustments related to (i) the Series
A-1 preferred stock contingent put option, (ii) the Series A-2 embedded options,
and (iii) the Series A-1 and A-2 preferred stock warrant
options. See Notes 13, 15, 17 and 18 to our audited consolidated financial
statements included in Item 8. "Financial Statements and Supplementary Data."

Interest Expense, Net



Interest expense, net incurred during the year ended December 31, 2021 was $11.6
million, compared to $13.8 million for the year ended December 31, 2020. The
decrease in interest expense was driven by lower average interest rates under
the 2021 Credit Facility, partially offset by an increase in write-off of
deferred debt issuance costs. Interest expense in the year ended December 31,
2021 includes $3.1 million from the write off of deferred debt issuance costs
related to the repayment of our 2020 Credit Facility in April, 2021, whereas
interest expense in the year ended December 31, 2020 includes $1.4 million
expense from both payments made and the write off of deferred debt issuance
costs related to the repayment of the Prior Credit Facility. See Note 14 to our
audited consolidated financial statements included in Item 8. "Financial
Statements and Supplementary Data."

Income Tax Expense

Income tax expense was $1.7 million for the year ended December 31, 2021, compared to an income tax expense of $0.9 million for the year ended December 31, 2020. The difference between our effective tax rate of (7.3)% and the federal statutory rate of 21.0%


                                       52
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is primarily attributable to items recorded for GAAP but permanently disallowed
for U.S. federal income tax purposes, recognition of a U.S. federal and state
valuation allowance of $27.0 million, state and foreign income tax provisions
and Global Intangible Low Taxed Income.

Segment Results of Operations

Year Ended December 31, 2022 Compared to the Year Ended December 31, 2021



                                                           Year Ended December 31,
                                              2022                                         2021
                                                           Segment                                      Segment
                                           Segment        Adjusted                      Segment        Adjusted
(in thousands except         Segment       Adjusted        EBITDA         Segment       Adjusted        EBITDA
percentage data)            Revenues      EBITDA(1)       Margin(2)      Revenues      EBITDA(1)       Margin(2)
Assessment, Permitting
and Response                $ 187,234     $   37,458            20.0 %   $ 261,865     $   57,128            21.8 %
Measurement and Analysis      172,432         31,588            18.3 %     153,208         31,270            20.4 %
Remediation and Reuse         184,750         30,616            16.6 %     131,340         19,326            14.7 %
Total Operating Segments    $ 544,416     $   99,662            18.3 %   $ 546,413     $  107,724            19.7 %
Corporate and Other                          (31,212 )           n/a                   $  (30,082 )           n/a



(1)
For purposes of evaluating segment profit, the Company's chief operating
decision maker reviews Segment Adjusted EBITDA as a basis for making the
decisions to allocate resources and assess performance. See Note 21 to our
audited consolidated financial statements included in Item 8. "Financial
Statements and Supplementary Data."
(2)
Represents Segment Adjusted EBITDA as a percentage of revenues.

Revenues



Assessment, Permitting and Response segment revenues for the year ended December
31, 2022 were $187.2 million, compared to $261.9 million for the year ended
December 31, 2021. The decrease was driven by an expected $117.6 million
decrease in CTEH revenues in 2022 when compared to 2021, as a result of lower
revenue from COVID-19 related services. The expected decrease in CTEH was
partially offset by organic growth in non-CTEH service lines and revenues of
$37.1 million from acquisitions completed during 2022 and revenues from 2021
acquisitions prior to their one year anniversary. CTEH revenues were $113.9
million in 2022 compared to $231.5 million in 2021. Total revenue from COVID-19
related services was $65.2 million and $189.9 million in the year ended December
31, 2022 and 2021, respectively.

Measurement and Analysis segment revenues for the year ended December 31, 2022
were $172.4 million, an increase of $19.2 million or 12.5% compared to revenues
for the year ended December 31, 2021 of $153.2 million. The increase was driven
primarily by organic growth, as well as by revenues of $6.1 million from
acquisitions completed during 2022 and revenues from 2021 acquisitions prior to
their one year anniversary.

Remediation and Reuse segment revenues for the year ended December 31, 2022 were
$184.8 million, an increase of $53.5 million or 40.7% compared to revenues for
the year ended December 31, 2021 of $131.3 million. The increase was driven
primarily by organic growth related to increases in demand for our water
treatment technology (PFAS removal) and waste-to-resources (agricultural waste
to biogas) services, as well as by revenues of $1.2 million from acquisitions
completed during 2022, partially offset by the impact of Discontinued O&M
Contracts, which generated revenues of $3.6 million and $12.1 million in the
years ended December 31, 2022 and 2021, respectively.

Segment Adjusted EBITDA



Assessment, Permitting and Response Segment Adjusted EBITDA was $37.5 million
for the year ended December 31, 2022, compared to $57.1 million for the year
ended December 31, 2021. For the years ended December 31, 2022 and 2021, Segment
Adjusted EBITDA margin was 20.0% and 21.8% respectively. The decrease in Segment
Adjusted EBITDA was a result of an expected decrease in CTEH COVID-19 related
revenues during the year ended December 31, 2022 when compared to the year ended
December 31, 2021. The decrease in Segment Adjusted EBITDA margin was a result
of recent acquisitions, which operate at lower margins, and business mix
partially offset by higher CTEH margins, as a result of lower COVID-19 related
work as a percentage of CTEH revenues in the current year versus the prior year.
                                       53
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Measurement and Analysis Segment Adjusted EBITDA for the year ended December 31,
2022 was $31.6 million, an increase of $0.3 million compared to Segment Adjusted
EBITDA for the year ended December 31, 2021 of $31.3 million. For the year ended
December 31, 2022, Segment Adjusted EBITDA margin was 18.3% compared to 20.4% in
the prior year. The increase in Segment Adjusted EBITDA was due to higher
revenues, whereas the decrease in Segment Adjusted EBITDA margin was a result of
business mix and the impact of the cyber-attack in June 2022, which temporarily
disrupted certain of our labs' ability to operate in July 2022.

Remediation and Reuse Segment Adjusted EBITDA for the year ended December 31,
2022 was $30.6 million, an increase of $11.3 million compared to Segment
Adjusted EBITDA for the year ended December 31, 2021 of $19.3 million. For the
year ended December 31, 2022, Segment Adjusted EBITDA margin was 16.6% compared
to 14.7% in the prior year. The increase in both Segment Adjusted EBITDA and
Segment Adjusted EBITDA margin was a result of significantly higher revenues and
business mix, partially offset by our continued investments in operating
infrastructure in this segment that temporarily impact margins.

Corporate and other costs were $31.2 million for the year ended December 31,
2022 compared to $30.1 million for the year ended December 31, 2021. The cost
increase was primarily driven by continued investment in corporate support
functions. Corporate and other costs were 5.7% and 5.5% of revenues in the years
ended December 31, 2022 and 2021, respectively.

Year Ended December 31, 2021 Compared to the Year Ended December 31, 2020



                                                           Year Ended December 31,
                                              2021                                         2020
                                                           Segment                                      Segment
                                           Segment        Adjusted                      Segment        Adjusted
(in thousands except         Segment       Adjusted        EBITDA         Segment       Adjusted        EBITDA
percentage data)            Revenues      EBITDA(1)       Margin(2)      Revenues      EBITDA(1)       Margin(2)
Assessment, Permitting
and Response                $ 261,865     $   57,128            21.8 %   $  98,521     $   24,208            24.6 %
Measurement and Analysis      153,208         31,270            20.4 %     151,557         39,386            26.0 %
Remediation and Reuse         131,340         19,326            14.7 %      78,165          8,938            11.4 %
Total Operating Segments    $ 546,413     $  107,724            19.7 %   $ 328,243     $   72,532            22.1 %
Corporate and Other                          (30,082 )           n/a                      (18,056 )           n/a



(1)
For purposes of evaluating segment profit, the Company's chief operating
decision maker reviews Segment Adjusted EBITDA as a basis for making the
decisions to allocate resources and assess performance. See Note 21 to our
audited consolidated financial statements included in Item 8. "Financial
Statements and Supplementary Data."
(2)
Represents Segment Adjusted EBITDA as a percentage of revenues.

Revenues



Assessment, Permitting and Response segment revenues for the year ended December
31, 2021 were $261.9 million, compared to $98.5 million for the year ended
December 31, 2020. The increase was primarily driven by the acquisition of CTEH
in the second quarter of 2020, and the acquisitions of EI and Horizon in the
second and third quarter of 2021, respectively. The impact of CTEH on the
segment was due to two main factors: (i) CTEH and therefore, the segment,
benefited from greater COVID-19 related response work in 2021 versus 2020 and
(ii) CTEH impacted the segment in the full 2021 period compared to only nine
months in 2020.


Measurement and Analysis segment revenues for the year ended December 31, 2021
were $153.2 million, an increase of $1.6 million or 1.1% compared to revenues
for the year ended December 31, 2020 of $151.6 million. The increase was driven
by revenues of $4.9 million from the acquisitions of Vista, ECI and Sensible,
partially offset by a decline in revenues from Discontinued Service Lines and
the timing of projects. Revenues from Discontinued Service Lines in the
Measurement and Analysis segment were zero and $2.4 million for the year ended
December 31, 2021 and 2020.


Remediation and Reuse segment revenues for the year ended December 31, 2021 were
$131.3 million, an increase of $53.1 million or 68.0% compared to revenues for
the year ended December 31, 2020 of $78.2 million. This revenue growth was
primarily due to organic growth, driven by increases in demand for our water
treatment technology (PFAS removal) and waste-to-resources (agricultural waste
to biogas) services, and $16.1 million from the acquisition of MSE, partially
offset by the loss of revenues from the Discontinued Service Lines. Revenues
from Discontinued Service Lines were $1.4 million for the year ended December
31, 2020.
                                       54
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Segment Adjusted EBITDA



Assessment, Permitting and Response Segment Adjusted EBITDA was $57.1 million
for the year ended December 31, 2021, compared to $24.2 million for the year
ended December 31, 2020. For the years ended December 31, 2021 and 2020, Segment
Adjusted EBITDA margin was 21.8% and 24.6%, respectively. The increase in
Segment Adjusted EBITDA was primarily a result of significantly higher revenues.
The decline in Segment Adjusted EBITDA margin is a result of an increase in
lower margin COVID-19 response work performed by CTEH in 2021.


Measurement and Analysis Segment Adjusted EBITDA for the year ended December 31,
2021 was $31.3 million, a decrease of $8.1 million compared to Segment Adjusted
EBITDA for the year ended December 31, 2020
of $39.4 million. For the year ended December 31, 2021, Segment Adjusted EBITDA
margin was 20.4% compared to 26.0% in the prior year. The decline in Segment
Adjusted EBITDA and segment adjusted EBITDA margin was primarily a result of
business mix and the planned reversal of cost mitigation measures taken at the
start of the COVID-19 pandemic in 2020.


Remediation and Reuse Segment Adjusted EBITDA for the year ended December 31,
2021 was $19.3 million, an increase of $10.4 million compared to Segment
Adjusted EBITDA for the year ended December 31, 2020 of $8.9 million. For the
year ended December 31, 2021, Segment Adjusted EBITDA margin was 14.7% compared
to 11.4% in the prior year. The increase in both Segment Adjusted EBITDA and
Segment Adjusted EBITDA margin was primarily a result of higher revenues.


Corporate and other costs were $30.1 million for the year ended December 31,
2021 compared to $18.1 million for the year ended December 31, 2020. The cost
increase was primarily driven by increased public company costs, higher software
costs, and continued investment in corporate support functions to support
anticipated future growth. Corporate and other costs were 5.5% of revenues in
both the years ended December 31, 2021 and December 31, 2020.

Liquidity and Capital Resources



Liquidity describes the ability of a company to generate sufficient cash flows
to meet the cash requirements of its business operations, including working
capital needs, debt service, acquisitions, other commitments and contractual
obligations. We consider liquidity in terms of cash flows from operations and
other sources, including availability under our credit facility, and their
sufficiency to fund our operating and investing activities.

Our principal sources of liquidity have been borrowings under our credit
facilities, other borrowing arrangements, proceeds from the issuance of common
and preferred stock and cash generated by operating activities. Historically, we
have financed our operations and acquisitions from a combination of cash
generated from operations, periodic borrowings under senior secured credit
facilities, other prior secured borrowings and proceeds from the issuance of
common and preferred stock. Our primary cash needs are for day to day
operations, to fund working capital requirements, to fund our acquisition
strategy and any related cash earn-out obligations, to pay interest and
principal on our indebtedness and dividends on our Series A-2 preferred stock,
and to make capital expenditures. Additionally, in connection with certain
acquisitions, we agree to earn-out provisions and other purchase price
adjustments that may require future payments. For example, the CTEH acquisition
agreement included an earn-out provision that provided for the payment of
contingent consideration based on CTEH's 2021 results in an aggregate amount not
to exceed $30.0 million, with the earn-out payment equal to a specified multiple
of CTEH's EBITDA for 2021 in excess of a specified target. CTEH fully achieved
the target in 2021 and the $30.0 million payment was paid in cash in the first
quarter of 2022. We made a similar $50.0 million earn-out payment to CTEH in the
second quarter of 2021 in respect of its 2020 EBITDA that was paid 50% in cash
and 50% in stock. We may also be required to make up to $9.5 million in
aggregate earn-out payments between the years 2023 and 2026 in connection with
the acquisitions of Vista, Sensible, Environmental Standards, IAG and Huco, up
to $4.0 million of which may be paid in cash. See Note 8 to our audited
consolidated financial statements included in Item 8. "Financial Statements and
Supplementary Data."

We expect to continue to finance our liquidity requirements, including any cash
earn-out payments that may be required in connection with acquisitions, through
cash generated from operations and borrowings under our credit facility. We
believe these sources will be sufficient to fund our cash needs in the
short-term and long-term.
                                       55
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Cash Flows

The following table summarizes our cash flows for the periods presented:



                                                        Year Ended December 

31,


(in thousands)                                     2022           2021      

2020


Consolidated statement of cash flows data:
Net cash provided by operating activities       $   20,649     $   37,581     $    1,850
Net cash used in investing activities              (38,687 )      (71,641 )     (179,740 )
Net cash (used in) provided by financing
activities                                         (38,764 )      146,103   

205,902


Change in cash, cash equivalents and
restricted
  cash                                          $  (56,802 )   $  112,043     $   28,012


Operating Activities

Cash flows from operating activities can fluctuate from period-to-period as earnings, working capital needs and the timing of payments for contingent consideration, taxes, bonus payments and other operating items impact reported cash flows.



For the year ended December 31, 2022, net cash provided by operating activities
was $20.6 million compared to net cash provided by operating activities of $37.6
million for the year ended December 31, 2021. Cash provided by operations
includes payment of contingent consideration of $19.5 million and $15.6 million
in the years ended December 31, 2022 and 2021, respectively. Excluding payment
of contingent consideration, cash provided by operating activities was $40.1
million for the year ended December 31, 2022, compared to cash provided by
operating activities of $53.2 million in the prior year, a decrease of $13.1
million. The period-over-period decrease, excluding the impact of contingent
consideration, was primarily due
to lower earnings before non-cash items, primarily due to expected lower revenue
from CTEH's COVID-19 services, of $9.3 million, and an increase in working
capital in the current year of $14.1 million versus an increase in working
capital in the prior year of $10.1 million.

Working capital increased by $14.1 million in the year ended December 31, 2022,
primarily due to a decrease in accounts payable and other accrued liabilities of
$9.9 million, as a result of lower contract liabilities due to the timing of
project completion and the timing of vendor payments, a decrease in accrued
payroll and benefits of $6.8 million, and an increase in prepaid expenses and
other current assets of $1.8 million, partially offset by a decrease in accounts
receivable and contract assets of $4.4 million.

For the year ended December 31, 2021, net cash provided by operating activities
was $37.6 million compared to net cash provided by operating activities of $1.9
million for the year ended December 31, 2020. Cash provided by operations
includes payment of contingent consideration of $15.6 million and $6.4 million
in the year ended December 31, 2021 and 2020, respectively. Excluding payment of
contingent consideration, cash provided by operating activities was $53.2
million, compared to cash provided by operating activities of $8.3 million in
the year ended December 31, 2020, an increase of $44.9 million. The period
over-period increase was primarily due to higher earnings before non-cash items
of $38.1 million and by an increase in working capital in the year ended
December 31, 2021 of $10.1 million versus an increase in working capital in the
year ended December 31, 2020 of $16.7 million.

The increase in working capital of $10.1 million in the year ended December 31,
2021, was driven by an increase in accounts receivable and contract assets of
$36.2 million (as a result of significantly higher revenues when compared to the
prior year), an increase in prepaid expenses and other current assets of $1.1
million, partially offset by an increase in accounts payable and other accrued
liabilities of $24.0 million (as a result of higher contract liabilities due to
the timing of project completion and the timing of vendor payments) and an
increase in accrued payroll and benefits of $3.2 million.


Investing Activities



For the year ended December 31, 2022, net cash used in investing activities was
$38.7 million, primarily driven by cash paid for the acquisitions of
Environmental Standards, IAG, Triad, AirKinetics and Huco, net of cash acquired
of $28.6 million and purchases of property and equipment for cash consideration
of $10.0 million.

For the year ended December 31, 2021, net cash used in investing activities was
$71.6 million, primarily driven by cash paid for the acquisitions of MSE, Vista,
EI, Sensible, ECI and Horizon, net of cash acquired of $55.7 million, as well as
payment of assumed purchase price obligations of $9.3 million and purchases of
property and equipment for cash consideration of $7.0 million.
                                       56
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For the year ended December 31, 2020, net cash used in investing activities was
$179.7 million, primarily driven by cash paid for the acquisition of CTEH, net
of cash acquired, of $171.6 million, as well as purchases of property and
equipment for cash consideration of $7.8 million.

Financing Activities



For the year ended December 31, 2022, net cash used in financing activities was
$38.8 million. Cash used in financing activities was driven by the payment of
the quarterly dividends on the Series A-2 preferred stock of $16.4 million, the
payment of acquisition-related contingent consideration of $11.1 million, term
loan amortization payments of $8.8 million related to our 2021 Credit Facility,
and the repayment of finance leases of $4.0 million, partially offset by
proceeds received from the exercise of stock options of $1.6 million.

For the year ended December 31, 2021, net cash provided by financing activities
was $146.1 million. Cash provided by financing activities was driven by
borrowings under the 2021 Credit Facility, consisting of $175.0 million under
the term loan and $37.0 million under the revolver, net proceeds received from
the follow-on offering of $169.3 million and proceeds received from the exercise
of stock options of $7.2 million, partially offset by the use of proceeds from
the 2021 Credit Facility to repay the $213.4 million outstanding under the 2020
Credit Facility, the payment of the quarterly dividend on the Series A-2
preferred stock of $16.4 million, the payment of acquisition-related contingent
consideration of $9.9 million, and the repayment of finance leases of $2.7
million.

For the year ended December 31, 2020, net cash provided by financing activities
was $????? million. Cash provided by financing activities was driven by IPO
proceeds, net of underwriting fees, of $161.3 million, borrowings under the 2020
Credit Facility, consisting of $175.0 million under the term loan and $25.0
million under the revolver, as well as net proceeds of $173.7 million from the
issuance of the Series A-2 preferred stock. Proceeds from the IPO were used
primarily to repay the $131.8 million Series A-1 preferred stock (along with the
issuance of shares of common stock), as well as to pay IPO offering costs of
$4.2 million. Proceeds from the 2020 Credit Facility were used primarily to
repay the $177.5 million outstanding under the Prior Credit Facility, whereas
proceeds from the issuance of the Series A-2 preferred stock were used to
finance the acquisition of CTEH. Cash from financing activities was also used to
repay the $25.0 million outstanding revolver balance and to make payments of
acquisition-related contingent consideration of $6.0 million, term loan
amortization payments of $1.3 million and $1.0 million related to our Prior
Credit Facility and 2020 Credit Facility, respectively, the payment of debt
issuance and debt extinguishment costs of $5.2 million and the payment of the
dividends on the Series A-2 preferred stock of $7.0 million.

Credit Facilities

2021 Credit Facility



On April 27, 2021, we entered into a new Senior Secured Credit Agreement, or the
2021 Credit Facility, providing for a new $300.0 million credit facility
comprised of a $175.0 million term loan and a $125.0 million revolving credit
facility, and used a portion of the proceeds to repay all amounts outstanding
under the 2020 Credit Facility. The 2021 revolving credit facility includes a
$20.0 million sublimit for the issuance of letters of credit. Subject to certain
exceptions, all amounts under the 2021 Credit Facility will become due on April
27, 2026. We have the option to borrow incremental term loans or request an
increase in the aggregate commitments under the revolving credit facility up to
an aggregate amount of $150.0 million subject to the satisfaction of certain
conditions.

The 2021 Credit Facility term loan must be repaid in quarterly installments. The
2021 Credit Facility term loan and the revolver bear interest subject to the
Company's leverage ratio and LIBOR.

On January 27, 2022, we entered into an interest rate swap transaction fixing
the floating component of the interest rate on $100.0 million of borrowings to
1.39% until January 27, 2025. Additionally, effective September 1, 2022, we
received an interest rate reduction of 0.05% under the 2021 Credit Facility
based on the achievement of certain sustainability and environmental, social and
governance related objectives as provided for in the 2021 Credit Facility.

Our obligations under the 2021 Credit Facility are guaranteed by certain of our
existing and future direct and indirect subsidiaries, and such obligations are
secured by substantially all of our assets. The 2021 Credit Facility includes a
number of covenants imposing certain restrictions on our business. The 2021
Credit Facility also includes financial covenants requiring us to remain below a
maximum total net leverage ratio and a minimum fixed charge coverage ratio. As
of December 31, 2022, our consolidated total leverage ratio was 1.3 times and we
were in compliance with all covenants under the 2021 Credit Facility.
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The weighted average interest rate on the 2021 Credit Facility for the years ended December 31, 2022 and 2021 was 3.5% and 2.1%, respectively.



The 2021 Credit Facility contains a mandatory prepayment feature upon a number
of events, including with the proceeds of certain asset sales and proceeds from
the issuance of any debt.

See Note 14 to our audited consolidated financial statements included in Item 8. "Financial Statements and Supplementary Data."

2020 Credit Facility



On April 13, 2020, we entered into a Unitranche Credit Agreement, or the 2020
Credit Facility, providing for a $225.0 million credit facility comprised of a
$175.0 million term loan and a $50.0 million revolving credit facility. The 2020
Credit facility was repaid in full in April 2021. The resulting loss on
extinguishment upon repayment of the 2020 Credit Facility in April 2021,
amounted to $4.1 million, of which $1.0 million was related to fees paid and
$3.1 related to unamortized debt issuance costs. Total loss on extinguishment is
recorded in interest expense-net within the consolidated statement of operations
for the year ended December 31, 2021.

See Note 14 to our audited consolidated financial statements included in Item 8. "Financial Statements and Supplementary Data."

Prior Credit Facility



Our Prior Credit Facility consisted of a $50.0 million term loan and a $130.0
million revolving credit facility. All amounts outstanding under the Prior
Credit Facility were repaid on April 13, 2020 with proceeds from the 2020 Credit
Facility. The resulting loss on extinguishment amounted to $1.4 million, of
which $0.4 million was related to fees paid and $1.0 million related to
unamortized debt issuance costs. Total loss on extinguishment is recorded in
interest expense-net within the consolidated statement of operations for the
year ended December 31, 2020.

See Note 14 to our audited consolidated financial statements included in Item 8. "Financial Statements and Supplementary Data."

Series A-1 Preferred Stock



On October 19, 2018, we issued 12,000 shares of our Series A-1 preferred stock.
Before redemption, the Redeemable Series A-1 Preferred Stock accrued dividends
quarterly at an annual rate of 15.0% with respect to dividends that were paid in
cash and at an annual rate of 14.2% with respect to dividends that were accrued.

On July 27, 2020, we redeemed in full the Series A-1 preferred stock, including
the guaranteed minimum two-year dividend. We used $131.8 million of the IPO
proceeds and 1,786,739 shares of common stock to redeem all outstanding shares
of the Series A-1 preferred stock.

See Note 17 to our audited consolidated financial statements included in Item 8. "Financial Statements and Supplementary Data."

Series A-2 Preferred Stock



On April 13, 2020, we issued 17,500 shares of the Series A-2 preferred stock
with a par value of $0.0001 per share and a warrant to purchase shares of common
stock with a ten-year exercise period, in exchange for $175.0 million. Prior to
the completion of our IPO on July 27, 2020, each share of Series A-2 preferred
stock accrued dividends at the rate of 15.0% per annum with respect to dividends
that were paid in cash, and 14.2% per annum, with respect to dividends that
accrued and compounded, resulting in an annual dividend rate of 15.0%. Following
the completion of our IPO, the Series A-2 preferred stock does not mature or
have a cash repayment obligation; however, it is redeemable at our option. The
Series A-2 preferred stock becomes convertible into our common stock beginning
on the four-year anniversary of the Series A-2 preferred stock issuance. Upon
the four-year anniversary of the issuance, holders of Series A-2 preferred stock
may convert up to $60.0 million of such shares into our common stock at a
conversion rate discounted to 85.0% of the volume weighted average trading
value, with the permitted amount of Series A-2 preferred stock to be converted
increasing at each subsequent anniversary of the issuance until the sixth
anniversary, after which all of the Series A-2 preferred stock may be converted
at the holder's option. Following the completion of our IPO and the redemption
of our Series A-1 preferred stock on July 27, 2020 with a portion of the
proceeds therefrom and newly issued shares of common stock, the Series A-2
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preferred stock dividend rate changed to 9.0% per annum with required quarterly
cash payments. If permitted under our existing debt facilities, we must pay the
Series A-2 preferred stock dividend in cash each quarter.

With respect to any redemption of any share of the Series A-2 preferred stock
prior to April 13, 2023, we are subject to a make whole penalty in which the
holder is guaranteed at least three years of dividend payments on the redeemed
amount.

See Note 18 to our audited consolidated financial statements included in Item 8. "Financial Statements and Supplementary Data."

Critical Accounting Policies and Estimates



The preparation of financial statements in accordance with accounting principles
generally accepted in the United States requires management to make estimates
and assumptions about future events that affect amounts reported in our audited
consolidated financial statements and related notes, as well as the related
disclosure of contingent assets and liabilities at the date of the financial
statements. Management evaluates its accounting policies, estimates and
judgments on an on-going basis. Management bases its estimates and judgments on
historical experience and various other factors that are believed to be
reasonable under the circumstances. Actual results may differ from these
estimates under different assumptions and conditions.

Management evaluated the development and selection of our critical accounting
policies and estimates and believes that the following involve a higher degree
of judgment or complexity and are most significant to reporting our results of
operations and financial position and are therefore discussed as critical. The
following critical accounting policies reflect the significant estimates and
judgments used in the preparation of our audited consolidated financial
statements. With respect to critical accounting policies, even a relatively
minor variance between actual and expected experience can potentially have a
materially favorable or unfavorable impact on subsequent results of operations.
More information on all of our significant accounting policies, as well as
recently adopted and issued accounting pronouncements that may have an impact on
these policies, can be found in Notes 2 and 3 to our audited consolidated
financial statements included in Item 8. "Financial Statements and Supplementary
Data."

Use of Estimates

The preparation of the audited consolidated financial statements in conformity
with U.S. GAAP requires management to make estimates and assumptions that affect
the reported amounts of assets and liabilities and disclosure of contingent
assets and liabilities at the date of the audited consolidated financial
statements and the reported amounts of revenues and expenses during the
reporting period. Significant estimates inherent in the preparation of the
audited consolidated financial statements include, but are not limited to,
management's forecast of future cash flows used as a basis to assess
recoverability of long-lived assets, the allocation of purchase price to
tangible and intangible assets, allowances for doubtful accounts, the estimated
useful lives over which property and equipment is depreciated and intangible
assets are amortized, subsequent measurement of goodwill, fair value of
contingent consideration payables, the fair value of warrants, fair value of
embedded derivatives, fair value of common stock issued, stock-based
compensation expense and deferred taxes. Actual results could materially differ
from those estimates.

Revenue Recognition

Revenue is recognized in accordance with Financial Accounting Standards Board
Accounting Standards Codification, or ASC, Topic 606, Revenue from Contracts
with Customers. The following is considered in the recognition of revenue under
ASC 606:

Our services are performed under two general types of contracts (i) fixed-price
and (ii) time-and-materials. Under fixed-price contracts, customers pay an
agreed-upon amount for a specified scope of work agreed to in advance of the
project. Under time-and-materials contracts, customers pay for the hours worked
and resources used based on agreed-upon rates. Certain of our time-and-materials
contracts are subject to maximum contract amounts. The duration of our contracts
ranges from less than one month to over a year, depending on the scope of
services provided.

We account for individual promises in contracts as separate performance
obligations if the promises are distinct. The assessment requires judgment. The
majority of our contracts have a single performance obligation as the promise to
transfer the individual goods or services is not separately identifiable from
other promises in the contracts and is, therefore, not distinct. Certain
contracts in our Measurement and Analysis have multiple performance obligations,
most commonly due to the contracts providing for multiple laboratory tests which
are individual performance obligations.
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For the Measurement and Analysis contracts with multiple performance
obligations, we allocate the transaction price to each performance obligation
based on the relative standalone selling price of each performance obligation.
The standalone selling price of each performance obligation is generally
determined by the observable price of a service when sold separately.

Fixed fee contracts-On the majority of fixed fee contracts, we recognize
revenue, over time, using either the proportion of actual costs incurred to the
total costs expected to complete the contract performance obligation, or the
cost to cost method, under the time-elapsed basis. We determined that the cost
to cost method best represents the transfer of services as the proportion
closely depicts the efforts or inputs completed towards the satisfaction of a
fixed fee contract performance obligation. Under the time-elapsed basis, the
arrangement is considered a single performance obligation comprised of a series
of distinct services that are substantially the same and that have the same
pattern of transfer (i.e. distinct days of service). We apply a time-based
measure of progress to the total transaction price, which results in ratable
recognition over the term of the contract. For a portion of our laboratory
service contracts, revenue is recognized as performance obligations are
satisfied over time, with recognition reflecting a series of distinct services
using the output method. We determined that this method best represents the
transfer of services as the customer obtains equal benefit from the service
throughout the service period.

There are inherent uncertainties in the estimation process for cost to cost
contracts, as the estimation of total contract costs and estimates to complete
is complex, subject to many variables, and requires judgment. It is possible
that estimates of costs to complete a performance obligation will be revised in
the near-term based on actual progress and costs incurred. These uncertainties
primarily impact our contracts in the Remediation and Reuse segment.

Time-and-materials contracts-Time-and-materials contracts contain variable
consideration. However, performance obligations qualify for the "Right to
Invoice" Practical Expedient. Under this practical expedient, we are allowed to
recognize revenue, over time, in the amount to which we have a right to invoice.
In addition, we are not required to estimate such variable consideration upon
inception of the contract and reassess the estimate each reporting period. We
determined that this method best represents the transfer of services as, upon
billing, we have a right to consideration from a customer in an amount that
directly corresponds with the value to the customer of our performance completed
to date.

Impairment of Long-Lived Assets



Certain events or changes in circumstances may indicate that the recoverability
of the carrying amount of long lived assets should be assessed. When such events
or changes in circumstances are present, we estimate the future cash flows
expected to result from the use of the asset (or asset group) and its eventual
disposition. If the sum of the expected undiscounted future cash flows is less
than the carrying amount, we recognize an impairment based on the fair value of
such assets.

Accounting for Acquisitions

We account for acquisitions using the acquisition method of accounting, which
requires that assets acquired and liabilities assumed be recognized at fair
value as of the acquisition date. The purchase price of acquisitions is
allocated to the tangible and identifiable intangible assets acquired and
liabilities assumed based on estimated fair values, and any excess purchase
price over the identifiable assets acquired and liabilities assumed is recorded
as goodwill. Goodwill represents the premium we pay over the fair value of the
net tangible and intangible assets acquired. We may use independent valuation
specialists to assist in determining the estimated fair values of assets
acquired and liabilities assumed, which could require certain significant
management assumptions and estimates.

The most critical areas of judgment in applying the acquisition method include
selecting the appropriate valuation techniques and assumptions that are used to
measure the acquired assets and assumed liabilities at fair value, particularly
for intangible assets, contingent consideration, acquired tangible assets such
as property, plant and equipment.

Business Acquisition Contingencies



Some of our acquisition agreements include contingent consideration
arrangements, which are generally based on the achievement of future performance
thresholds. For each transaction, we estimate the fair value of contingent
consideration payments as part of the initial purchase price and record the
estimated fair value of contingent consideration as a liability. Subsequent
changes in the fair value of contingent consideration are recognized as a gain
or loss in our consolidated statements of operations. Payments of contingent
consideration are reflected in financing activities in our consolidated
statements of cash flows to the extent included as part of the initial purchase
price, or in operating activities if the payment exceeds the amount included in
the initial purchase price.
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Goodwill Impairment Analysis

Goodwill is not amortized but instead qualitatively or quantitively tested for
impairment at least annually should an event or circumstances indicate that a
reduction in fair value of the reporting unit may have occurred during the year,
goodwill would also be tested at such occasion. We perform the goodwill test at
the reporting unit level. If necessary, the goodwill quantitative impairment
test is performed on October 1 every year.


We use a two-step process to assess the realizability of goodwill. The first
step (generally referred to as a "step 0" analysis) is a qualitative assessment
that analyzes current economic indicators associated with a particular reporting
unit. For example, we analyze changes in economic, market and industry
conditions, business strategy, cost factors, and financial performance, among
others, to determine if there are indicators of a significant decline in the
fair value of a particular reporting unit. If the qualitative assessment
indicates a stable or improved fair value, no further testing is required. If a
qualitative assessment indicates it is more likely than not that the fair value
of a reporting unit is less than its carrying amount, we will proceed to the
quantitative second step (generally referred to as a "step 1" analysis) where
the fair value of a reporting unit is calculated based on weighted income and
market-based approaches. If the fair value of a reporting unit is lower than its
carrying value, an impairment to goodwill is recorded, not to exceed the
carrying amount of goodwill in the reporting unit.

Step 1 of the quantitative test requires comparison of the fair value of each of
the reporting units to the respective carrying value. If the carrying value of
the reporting unit is less than the fair value, no impairment exists. Otherwise,
we would recognize an impairment charge for the amount by which the carrying
amount of a reporting unit exceeds its fair value up to the amount of goodwill
allocated to that reporting unit.

Embedded Derivatives



Embedded derivatives that are required to be bifurcated from the underlying host
instrument are accounted for and valued as a separate financial instrument.
These embedded derivatives are bifurcated, accounted for at their estimated fair
value, which is based on certain estimates and assumptions, and presented
separately on the consolidated statements of financial position. Changes in fair
value of the embedded derivatives are recognized as a component of other expense
on our consolidated statements of operations.

Stock-based Compensation



We currently sponsor two stock incentive plans that allow for issuance of
employee stock options and other forms of equity incentives. Under one of the
plans, there are certain awards that were issued to non-employees in exchange
for their services and are accounted for under ASC 505, Equity-Based Payments to
Non-Employees. ASC 505 requires that the fair value of the equity instruments
issued to a non-employee be measured on the earlier of: (i) the performance
commitment date or (ii) the date the services required under the arrangement
have been completed. Certain of the performance based restricted stock units
will only meet the requirements for establishing a grant date when the final
calculated financial performance metrics and the amount of awards have been
approved by our Board of Directors, which will then trigger the service
inception date, the fair value of the awards, and the associated expense
recognition period. The fair value of the remaining stock-based payment awards
is expensed over the vesting period of each tranche on a straight-line basis.
Any modification of an award that increases its fair value will require us to
recognize additional expense. The fair value of stock options under its employee
stock incentive plan are estimated as of the grant date using the Black-Scholes
option valuation model, which is affected by its estimates of the risk-free
interest rate, its expected dividend yield, expected term and the expected share
price volatility of its common shares over the expected term. No dividend rates
are used in the calculation as these are not applicable to us. Forfeitures are
recognized as incurred. Employee options are accounted for in accordance with
the guidance set forth by ASC 718. The fair value of stock appreciation rights
is estimated at the grant date using the geometric Brownian motion model. This
process has been widely used to model stock prices and is the underpinning of
the Black-Scholes option pricing model and other extensions of the Random Walk
Hypothesis of stock price movements and the Efficient Market Hypothesis.

JOBS Act Accounting Election



We were an emerging growth company, as defined in the JOBS Act, through the end
of the year ended December 31, 2021. Under the JOBS Act, emerging growth
companies can delay adopting new or revised accounting standards issued
subsequent to the enactment of the JOBS Act until such time as those standards
apply to private companies. While we were an emerging growth company, we elected
to use this extended transition period for complying with new or revised
accounting standards that have different effective dates for public and private
companies. As a result, our financial statements for periods through December
31, 2020 may not be comparable to companies that comply with new or revised
accounting pronouncements as of public company effective dates.
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