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                              September 27, 2022

       Thiago da Costa Silva
       Director
       Ambipar Emergency Response
       Avenida Ang  lica, n   2346, 5th Floor
       S  o Paulo, SP     Brazil, 01228-200

                                                        Re: Ambipar Emergency
Response
                                                            Draft Registration
Statement on Form F-4
                                                            Submitted August
31, 2022
                                                            CIK No. 0001937441

       Dear Mr. da Costa Silva:

              We have reviewed your draft registration statement and have the
following comments. In
       some of our comments, we may ask you to provide us with information so
we may better
       understand your disclosure.

              Please respond to this letter by providing the requested
information and either submitting
       an amended draft registration statement or publicly filing your
registration statement on
       EDGAR. If you do not believe our comments apply to your facts and
circumstances or do not
       believe an amendment is appropriate, please tell us why in your
response.

             After reviewing the information you provide in response to these
comments and your
       amended draft registration statement or filed registration statement, we
may have additional
       comments.

       Draft Registration Statement on Form F-4 Filed August 31, 2022

       Q. What interests do HPX   s current officers and directors have in the
Business Combination?,
       page 31

   1.                                                   Please revise to also
disclose the current value of out-of-pocket expenses related to
                                                        identifying,
investigating and completing an initial business combination for which your
                                                        directors are awaiting
reimbursement. In addition, please revise to disclose in this section
                                                        the directors or other
persons associated with HPX and Sponsor who are expected to
                                                        continue as directors
or in other roles at New PubCo. In that regard, we note your
                                                        disclosure in the
section    New PubCo Management Following the Business Combination
                                                        that begins on page
328.
 Thiago da Costa Silva
FirstName LastNameThiago   da Costa Silva
Ambipar Emergency   Response
Comapany 27,
September NameAmbipar
              2022       Emergency Response
September
Page 2    27, 2022 Page 2
FirstName LastName
Downside Protection Agreements, page 52

2.       Please revise to describe the downside protection provided to the PIPE
Investors, the Non-
         Redeeming Shareholders, and the XP Non-Redeeming Shareholders under
the Downside
         Protection Agreements. In addition, quantify the benefits that each
such party may
         receive under the Downside Protection Agreements.
Summary of the Proxy Statement/Prospectus
Ownership of New PubCo Upon Completion of the Business Combination, page 52

3.       Your table on page 52 discloses Ambipar owning 65.6% to 71.8% of total
outstanding
         shares at the close of the transactions, depending on the redemption
scenario. On page 65,
         you disclose Ambipar owning 95% of New PubCo   s voting power at the
close of the
         transactions, at the minimum redemption scenario. Please revise to
address this divergence
         of ownership of shares outstanding and total voting power resulting
from the dual class
         structure.
Recent Development
Recent Acquisition, page 68

4.       You disclose the recent acquisitions of four businesses in July and
August 2022. You
         state on page 287 that you have completed five additional acquisitions
in 2022; and on
         page 295 you disclose the eight acquisitions completed in 2022. Please
clarify and revise
         to include consistent disclosures regarding the acquisitions you
completed throughout the
         filing.

We are currently operating in a period of economic uncertainty and capital
markets disruption,
which has been significantly impacted..., page 95

5.       We note your disclosure that while you do not have any employees,
staff, consultants,
         operations, materials or equipment located in Ukraine, Russia or
Belarus, some of your
         customers and suppliers may have employees, staff, consultants,
operations, materials or
         equipment located in Ukraine, Russia or Belarus which could adversely
affect your
         business or the services being provided to you. To the extent your
business or services
         provided to you have been disrupted, please disclose whether and how
your business
         segments, products, lines of service, projects, or operations are
materially impacted by
         supply chain disruptions, especially in light of Russia   s invasion
of Ukraine. Explain
         whether and how you have undertaken efforts to identify any risks to
your customers and
         suppliers, and/or undertaken any efforts to mitigate the impact and
where possible
         quantify the impact to your business.
 Thiago da Costa Silva
FirstName LastNameThiago   da Costa Silva
Ambipar Emergency   Response
Comapany 27,
September NameAmbipar
              2022       Emergency Response
September
Page 3    27, 2022 Page 3
FirstName LastName
You should not rely on any commitments of the PIPE Investors as validation of
your investment
decision..., page 136

6.       We note your disclosure that the additional New PubCo Class A Ordinary
Shares and
         New PubCo Warrants that incentivized the PIPE Investors to enter into
the subscription
         agreements in connection with the PIPE Financing have effectively
reduced the amount of
         the aggregate investment per New PubCo Class A Ordinary Share of the
PIPE Investors
         which will be paid in connection with the Business Combination. We
also note your
         disclosure that the PIPE Investors will effectively pay a lower price
per New PubCo
         Class A Ordinary Share than $10.00 per share. In terms of the shares
and warrants to be
         issued at closing, please specify to the extent possible the effective
lower price per Class
         A Ordinary share such PIPE investors will pay. Additionally, please
discuss more
         specifically the impact on the effective price per Class A Ordinary
share that the PIPE
         Investors will pay as a result of the Downside Protection Agreement.
Risk Factors
HPX may be deemed a "foreign person" under the regulations relating to the
Committee on
Foreign Investment in the United States, page 138

7.       We note your disclosure that HPX may be deemed a    foreign person,
and the risk of
         CFIUS review of the business combination. Please also tell us whether
any other person
         or entity associated with or otherwise involved in the transaction,
is, is controlled by, or
         has substantial ties with a non-U.S. person. If so, also include risk
factor disclosure that
         addresses how this fact could impact your ability to complete your
initial business
         combination.
Business Combination Proposal
Background of the Business Combination, page 170

8.       We note your disclosure regarding due diligence performed by BRZ
Advogados,
         Greenberg Traurig, LLP, and PricewaterhouseCoopers Corporate Finance &
Recovery
         Ltda, and the reports prepared by each such firm. Please provide your
analysis as to
         whether any of these reports may be "a report, opinion or appraisal
materially related to
         the transaction" pursuant to Item 4(b) of Form F-4 such that
information required by Item
         1015(b) of Regulation M-A with respect to such report, opinion or
appraisal is required to
         be provided in your filing. In addition, please obtain and file a
consent from each such
         firm, or provide your analysis as to why a consent is not required.
Refer to Rule 436 and
         Securities Act Section 7.
Certain Unaudited Projected Financial Information, page 192

9.       In terms of key assumptions of the projections provided by the
management of
         Emergencia to HPX, you disclose that Emergencia assumed funding for
growth assuming
         a capitalization of $353 million. Please expand to disclose what
capitalization you are
         referencing and any material assumptions.
 Thiago da Costa Silva
FirstName LastNameThiago   da Costa Silva
Ambipar Emergency   Response
Comapany 27,
September NameAmbipar
              2022       Emergency Response
September
Page 4    27, 2022 Page 4
FirstName LastName
Merger Proposal, page 228

10.      We note that the Merger Proposal, if approved, will authorize the
First Plan of Merger and
         the Second Plan of Merger, relating to two separate special
resolutions under Cayman
         Islands law. If you do not intend to present these matters as two
separate proposals on the
         form of proxy, please provide your analysis as to why such
presentation is not required.
         Refer to Exchange Act Rule 14a-4(a)(3).
Unaudited Pro Forma Condensed Combined Financial Information, page 240

11.      We note from page F-31 that Response Group is a direct subsidiary of
Ambipar Group in
         the Emergency Response segment. We also note form page 52 that
Emergencia and
         certain of its subsidiaries will enter into a cost sharing agreement
pursuant to which
         Ambipar Group will agree to provide certain share support services to
Emergencia.
         Please clarify why autonomous entity adjustments were not made to
reflect operations and
         financial positions of Emergencia as an autonomous entity. Refer to
Rule 11-02(a)(6)(ii)
         of Regulation S-X.
12.      We note from page 295 that you made eight acquisitions in 2022. Please
provide us a
         detail analysis why these eight individual acquisitions or in
aggregate were not included in
         the pro forma financial information. Refer to Rule 11-01(a)(2) of
Regulations S-X. In
         addition, tell us why the financial statements of these businesses you
acquired were not
         required. Refer to Rule 3-05(a) of Regulation S-X.
Notes to Unaudited Pro Forma Condensed Combined Financial Information
1. Adjustments to Unaudited Pro Forma Condensed Combined Financial Information,
page 248,
page 248

13.      We note from page 246 you made adjustments e and h for a net of R$33
and adjustment k
         for R$90 regarding Class A ordinary share, R$0.0006 par value. Please
revise the notes
         for adjustments e, h and k on page 249 to clearly show how you derived
such amounts. In
         addition, please explain how you have reflected the issuance of
5,050,000 New PubCo
         Class B ordinary shares discussed in note k.
14.      We note from the transaction accounting adjustment j on page 249 that
the difference in
         the amount between the fair value of the equity instruments issued to
acquire HPX and the
         fair value of the identifiable net assets acquired represents a stock
exchange listing service
         of new PubCo under IFRS 2 Share-Based Payments. Please revise to
clearly show the fair
         values of each component of equity instruments issued to acquire HPX.
In addition,
         revise to present in a way to show the detail of the fair value of the
identifiable net assets
         acquired.
15.      Please disclose the basis for determining the amount of payment
relating to Earn-out
         shares in the amount of R$49.9 million presented in adjustment f.
 Thiago da Costa Silva
FirstName LastNameThiago   da Costa Silva
Ambipar Emergency   Response
Comapany 27,
September NameAmbipar
              2022       Emergency Response
September
Page 5    27, 2022 Page 5
FirstName LastName
U.S. Federal Income Tax Considerations
Effects of the First Merger to U.S. Holders, page 256

16.      We note your disclosure that it is intended that the First Merger
qualify as an F
         Reorganization, and your disclosure that assuming that the First
Merger qualifies as an F
         Reorganization, U.S. Holders of HPX Securities will generally not
recognize gain or loss
         for U.S. federal income tax purposes as a result of the First Merger.
Please revise to
         clarify the tax consequences of the transaction. Refer to Item 4(a)(6)
of Form F-4. In
         addition, please file a tax opinion pursuant to Item 601(b)(8) of
Regulation S-K.
Historical Results of Operations, page 313

17.      We note your discussions attribute the significant increase of net
revenues and cost of
         services rendered to the completed acquisitions. Please revise to
discuss the impact of
         changes of foreign exchange rates from period to period. Disclose the
increase in revenue
         and cost of services attributable to the acquisitions. Excluding the
impact of acquisitions,
         disclose the change in revenue and cost of services and discuss the
business reasons for
         the significant change.
18.      We note you derive revenue by providing Emergency Response and
Industrial Field
         Services, Consulting services and Training Services. Disclose the
revenue for each of the
         services for the periods presented. To provide more insight to your
investors, please
         provide a more fulsome discussion of factors impacting changes in each
of your revenue
         stream during the periods presented.
19.      Please expand your disclosures to discuss the business reasons for
significant decrease in
         gross profit from 29.7% to 24.8%. In addition, disclose any known
trends or events that
         are reasonably likely to cause a material change in the relationship
between costs and
         revenues.
Liquidity and Capital Resources
Net Cash Generated from Operating Activities, page 316

20.      Please revise to provide a robust discussion describing and
quantifying the specific effect
         of the significant drivers that contributed to the material changes in
your net cash
         generated from operating activities for the periods presented. The
disclosures should also
         include a discussion of the underlying reasons for material changes in
operating assets and
         liabilities i.e. accounts receivable, suppliers and other accounts
payable etc., that affect
         operating cash flows and the impact of acquisitions. See guidance in
Section IV.B.1 of
         SEC Release 33-8350.
Critical Accounting Policies and Estimates, page 317

21.      We note that your discussion in MD&A excludes disclosure of any
critical accounting
         estimates. Please revise to include disclosure of all critical
accounting estimates as
         required by Item 303 of Regulation S-K. Your disclosure should include
qualitative and
 Thiago da Costa Silva
FirstName LastNameThiago   da Costa Silva
Ambipar Emergency   Response
Comapany 27,
September NameAmbipar
              2022       Emergency Response
September
Page 6    27, 2022 Page 6
FirstName LastName
         quantitative information necessary to understand the estimation
uncertainty and the impact
         the critical accounting estimate has had or is reasonably likely to
have on your financial
         condition or results of operations to the extent the information is
material and reasonably
         available. This information should include why each critical
accounting estimate is subject
         to uncertainty and, to the extent the information is material and
reasonably available, how
         much each estimate and/or assumption has changed over the period, and
the sensitivity of
         the reported amount to the methods, assumptions and estimates
underlying its calculation.
Notes to Combined Financial Statements
1. General Information, page F-31

22.      We note the combined financial statements presented include several
separate entities.
         Please revise to disclose the following:
             Tabular disclosure of entities included in the combined financial
statements, its
             relationship to Emerg  ncia Participa    es S.A., Ambipar Group
and ownership of the
             entities;
             Disclose the basis for including the separate entities in the
combined financial
             statements i.e. entities under common control etc.,;
             Disclose how costs and expenses are allocated and inter-company
transactions are
             reflected;
             Explain which entity holds the outstanding shares of the entities
that are combined
             and ; .
             Disclose how equity, number of shares of separate entities, are
determined and
             presented and the basis for calculating earnings per share.
7. Business Combination, page F-61

23.      We note from your tabular disclosure on pages F-61 and F-62 that you
made 15
         acquisitions in 2021. However you include only 11 acquisitions on
pages F-67 to F-68.
         Please revise to describe the remaining acquisitions and provide the
disclosures required
         by IFRS 3, Paragraph B64.
24.      We note in three acquisitions in 2021, you acquired less than 100% of
the equity interest.
         Please revise to provide the information about non-controlling
interest required under
         Paragraph 64(o) of IFRS 3.
25.      We note you recorded significant amounts of goodwill from business
combinations in
         2020 and 2021, as compared to the amounts of consideration
transferred, on pages F-66
         and F-68, respectively. Please revise to provide a qualitative
description of the factors
         that made up the goodwill recognized. Refer to Paragraph B64(e) of
IFRS 3.
26.      We note from the tabular disclosure of the assets and liabilities
acquired at fair value on
         page F-67 the total identifiable net assets was R$79,533. However, you
used R$70,517 as
            total amount of identifiable net liabilities    in the calculation
of goodwill. In addition,
         you have not included non-controlling interest related to acquisition
of Controlpar. Please
         clarify and revise the disclosures as appropriate.
 Thiago da Costa Silva
FirstName LastNameThiago   da Costa Silva
Ambipar Emergency   Response
Comapany 27,
September NameAmbipar
              2022       Emergency Response
September
Page 7    27, 2022 Page 7
FirstName LastName
27.      Provide a summary table which includes all the acquisitions during
each period presented,
         disclosing how the goodwill was derived and reconciling to disclosures
in note 9, page F-
         75. In addition, reconcile the cash paid for the acquisitions to
disclosures in cash flows,
         page F-30.
23. Subsequent Events, page F-91

28.      We note the several acquisitions in 2022. Please revise to provide the
disclosures required
         by IFRS 3, paragraphs 59 and 60.
Exhibits

29.      Please file as an exhibit the warrant agreement for the New PubCo
Warrants.
General

30.      Please provide us with your engagement letter with Credit Suisse as
placement agent for
         the PIPE Financing. Please also provide us with any correspondence
between HPX and
         Credit Suisse relating to the firm's resignation. In addition, please
provide us with the
         termination letter and waiver letter described on page 38.
31.      Please provide us with a letter from Credit Suisse stating whether it
agrees with the
         statements made in your prospectus related to their resignation and,
if not, stating the
         respects in which they do not agree. Please revise your disclosure
accordingly to reflect
         that you have discussed the disclosure with Credit Suisse and it
either agrees or does not
         agree with the conclusions and the risks associated with such outcome.
If Credit Suisse
         does not respond, please revise your disclosure to indicate you have
asked and not
         received a response and disclose the risks to investors. Additionally,
please indicate that
         the firm refused to discuss the reasons for its resignation and
forfeiture of fees, if
         applicable, with management.
32.      We note disclosure in the registration statement for the initial
public offering of HPX that
         the HPX sponsor, directors, officers, advisors or any of their
respective affiliates may
         purchase public shares in privately negotiated transactions from
public shareholders who
         have already elected to exercise their redemption rights or submitted
a proxy to vote
         against the initial business combination. We also note disclosure in
such registration
         statement that the purpose of any such transaction could be to vote
such shares in favor of
         the initial business combination, and disclosure that any such price
per share may be
         different than the amount per share a public shareholder would receive
if it elected to
         redeem its shares in connection with the initial business combination.
Please explain how
         such purchases would comply with the requirements of Rule 14e-5 under
the Exchange
         Act. Refer to Tender Offer Rules and Schedules Compliance and
Disclosure
         Interpretation 166.01 for guidance.
 Thiago da Costa Silva
Ambipar Emergency Response
September 27, 2022
Page 8

       You may contact Steve Lo at (202) 551-3394 or Raj Rajan at (202)
551-3388 if you have
questions regarding comments on the financial statements and related matters.
Please contact
Kevin Dougherty at (202) 551-3271 or Laura Nicholson, Special Counsel, at (202)
551-3584
with any other questions.



                                                         Sincerely,
FirstName LastNameThiago da Costa Silva
                                                         Division of
Corporation Finance
Comapany NameAmbipar Emergency Response
                                                         Office of Energy &
Transportation
September 27, 2022 Page 8
cc:       Grenfel S. Calheiros
FirstName LastName