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                  Ministry            Ministère                                    AMENDED CERTIFICATE OF APPROVAL
                  of the              de                                                 INDUSTRIAL SEWAGE WORKS
                  Environment         l’Environnement                                           NUMBER 5948-737S5B
                                                                                              Issue Date: May 22, 2007

     Ontario
                      CVRD Inco Limited
                      337 Power St
                      Copper Cliff, Ontario
                      P0M 1N0

Site Location:        Copper Cliff Taillings Area
                      Lot 9 and 10, Concession 3
                      Greater Sudbury City, District of Sudbury
                      P0M 1N0


You have applied in accordance with Section 53 of the Ontario Water Resources Act for approval of:

sewage works associated with an existing integrated base and precious metals processing facility including copper and
nickel mining, milling, smelting and refining, as well as electrowinning of precious metals located on an expanse of land
situated generally just east of the former Town of Creighton, north of the former Town of Lively, and west of the former
Town of Copper Cliff (all now within the Regional Municipality of Sudbury), and known generally as the CVRD Inco
Copper Cliff Tailings Area, consisting of:

Tailings: Area A, C-D, M, M1, P & Q

Tailings impoundment basin (Areas A, C-D, M, M1,P and Q) encompassing a total surface area of approximately 1,053
hectares (2,600 acres), contained by a series of perimeter dams constructed of rock fill and coarse tailings, constructed to
an ultimate dam elevation of 335 metres (1100 feet), including:

 a separate tailings impoundment basin designated as A and M Areas and their two independent decant systems
discharging to the existing Copper Cliff Creek Treatment Plant;

 retention of the sites designated C-D, M1 and P-Q Areas with their common effluent siphon system from the P Area
pond ultimately to the existing Copper Cliff Creek Treatment Plant;

 transmission facilities to convey a clarified decant from the proposed tailings impoundment basin to Copper Cliff Creek
consisting of approximately 838 metres (2750 feet) of a 1.1 metre (42 inch) diameter twin pipe, 70 metres (230 feet) of a
0.6 metre (24 inch) diameter twin pipe and appropriate siphon decant facilities with an erosion prevention spillway at
Finland Creek, ultimately discharging to Copper Cliff Creek; and

Application of Pulp and Paper Mill Biosolids (PPMB) to Q-Area

 application of up to 270,000 m3 of pulp and paper mill biosolids (PPMB) as an organic cover to promote vegetation on
the 33.5 ha Q-Area of CVRD Inco's Tailings Area to be applied to a depth of 1 m in approximately 5 year period; and

 application of up to 33 tonnes/ha of calcium carbonate to Q-Area of CVRD Inco's Tailings Area for soil pH adjustment
prior to the application of PPMB;

Whissel Dam Seepage Station

 construction of an impervious Whissel North Seepage Pond of approximately 27,000 cubic metres in volume having a
crest elevation of approximately 283 metres with a clay core surrounded on the upstream and downstream sides with filter
layers and supported with shells of minus 15 centimetre compacted rockfill, complete with an emergency spillway
designed for 1 in 10 year storm; and

   increasing the storage capacity of the existing Whissel South Seepage Pond by a combination of excavation below the
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elevation of 276 metres and by raising the existing dyke to a crest elevation of approximately 277 metres.

Rock Dam Seepage Pond

Increasing the storage capacity of the Rock Dam Seepage Pond to approximately 22,000 cubic metres by raising the
elevation of the existing dyke to approximately 262 metres along with an emergency spillway designed for 1 in 10 year
storm to prevent dam overtopping.

Mikkola Dam Seepage Pond

Construction of a new dam to enable the increase in the storage capacity of the Mikkola Dam Seepage Pond to
approximately 27,000 cubic metres. The new dyke will be raised to a crest elevation of approximately 271 metres along
with an emergency spillway designed for 1 in 10 year storm to prevent dam overtopping.

Pistol Dam Seepage Pond

Increasing the storage capacity of the existing Pistol Dam Seepage Pond to approximately 17,000 cubic metres by a
combination of excavation of the pond floor and by raising the existing dyke to a crest elevation of approximately 266
metres along with an emergency spillway designed for 1 in 10 year storm to prevent dam overtopping.

Pertaining to the works included under Tailings Areas A, C-D, M, M1,P and Q:

 all flow from Whissel Dam, Rock Dam, Mikkola Dam and Pistol Dam are to be transmitted to Copper Cliff Creek for
ultimate treatment at the Copper Cliff Treatment Plant; and

 all four seepage stations shall be equipped with pond level indicators, sump level indicators and PLC controllers to allow
operators to monitor the status of pumps, levels of sumps and pond levels.

Tailings: "R" Areas

Sites designated R1, R2, R3, and R4 Areas to the north-west side of the Areas noted previously, and in a stagewise
manner, as follows:

Stage I -- R1 Area (bordering on C-D and Q Areas) will have a storage capacity of approximately forty-three and one-half
million (43,500,000) tonnes of pyrrhotite tailings (diluted with regular tailings) and will be reserved for the impoundment of
pyrrhotite tailings over the life of the project; it will be operated concurrently with R2, R3, and R4 Areas and will be
constructed concurrently with the R2 Area which will occupy the northern most portion of the development and have a
capacity of about thirty million (30,000,000) tonnes of tailings.

Stage II-- R3 Area will start to be developed approximately four years prior to the anticipated filling of R2 Area, and will
be designed as an extension to the then-existing R2 Area, overlying it somewhat and expanding it further to the west,
allowing for the addition of a further twenty-nine and one-half million (29,500,000) tonnes of tailings storage capacity.

Stage III -- R4 Area will begin development about five years prior to the projected filling of R3 Area; it also will extend the
existing R2/R3 Area further westward and allow for the overlay of those areas with tailings, thereby adding a final ninety-
five million (95,000,000) tonnes to the ultimate capacity of the area.

Stage IV  -- Dam raises of the order of 25 metres may be implemented in order to allow storage of additional tailings to dam
capacity, as necessary and warranted as R4 Area nears filling; such raises would increase the tailings storage capacity by a
further eighty-three and one-half million (83,500,000) tonnes. Stage III and IV is a combined stage separated only in the
construction phase.

These works shall be constructed so that effluent from the active tailings area (R2, R3, or R4) will decant via an overflow
ditch from that area's pond to the R1 Area pond and then via overflow decant to a trench leading to the P Area pond and
the existing effluent siphon during all stages of the operation of the tailings impoundment facility; final effluent proceeding
as at present to the Copper Cliff Creek Treatment Plant operated by CVRD Inco Limited.

Seepage Stations
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Seepage collection facilities, consisting of one pumping station, namely No. 1 Seepage pump station, and other seepage
stations in the expanded new tailings area (R Area) as required and appropriate collection ditches, dam structures and spare
pumps, constructed along the northern perimeter of the expanded tailings impoundment basin, all adequately sized and
operated in a manner to contain and collect all seepage from the impoundment dams' toe drain systems, all flow from
which is to be returned to the impoundment basin.

Waste Sites within Tailings Area

Allowance for the disposal of solid and industrial wastes generated from the Inco's Sudbury operations along with the
Regional Municipality of Sudbury sewage sludge and digested biosolids from the Espanola Group of wastewater plants
operated by the Ontario Clean Water Agency, within the existing approved tailings area, in accordance with Schedule "B".

Frood Stobie Emergency Tailings

allowance for the discharge of contaminated water originating in the inactive tailings area of the Frood Stobie Emergency
Tailings during spring run-off conditions and periods of precipitation, to be rerouted to the Copper Cliff Tailings Area (R
Area) or to be used as process water; and

allowance for the discharge of minewater to the Stobie mine or lower pond, with transmission via pumps to the Stobie
mine or transport by trucks from the Thayer Lindsley Mine (operated by Xtrata Limited), at a maximum rate of 981 cubic
metres per day, to be pumped from there to the Copper Cliff Tailings Area via the Frood Stobie booster station and the
Copper Cliff Mill booster station.

Gertrude Mine Water

one (1) 210 metre pipeline having a diameter of 200 millimetres, and associated pumping system for the transfer of
minewater from the Gertrude Open Pit Mine to the waste water holding pond;

one (1) trench for the interception and transfer of stormwater run-off for the Gertrude Mine Waste Rock Pile to the
waste water holding pond;

 one (1) waste water holding pond of having a maximum operating capacity of approximately 13,000 cubic metres, with
the provision for a 0.9 metre freeboard, with the pond having dimensions of approximately 76 metres long by 76 metres
width by 3.5 metres depth, with the inside embankment walls sloped at 3 H:1 V, the said embankments to be constructed
of non-acid generating rock founded on the bedrock surface, followed by layers of sand and gravel, an impermeable
geotextile membrane, sand and gravel, and a layer of rip-rap in contact with the water to prevent erosion;

one (1) pumping system for the transfer of waste water from the waste water holding pond back to the Gertrude Mine
Open Pit during emergencies; and

 one (1) four kilometre pipeline having a diameter of 200 millimetres, and associated pumping system for the transmission
of waste water from the waste water holding pond to the Creighton mine water collection system.

Sewage from Gertrude Mine to be transferred as part of the Creighton mine water transmission to the Copper Cliff Tailings
Area as approved in Schedule “B” of this Certificate.

Gertrude West Mine Water

 establishment of the Gertrude West Stormwater Management Pond, to be formed from three (3) water retaining dams
(low permeability core with upstream geotextile and rockfill zones and downstream filter, transition and rockfill zones,
maximum crest elevation of 301.4 metres including 0.6 metres freeboard), thirteen (13) run-off diversion berms (low
permeability core with appropriate geotextile and rip rap for erosion protection), and an Emergency Spillway (5 metres
wide with maximum invert elevation of 300.64 metres) discharging to the Gertrude West Pit;

 a 3 metres wide x 0.8 metres deep with 0.86 % channel slope diversion ditch along the North and West limits of the
catchment area for the Gertrude West Stormwater Management Pond;
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a gravity decant structure (wet well, orifice and valve) at the dam at the Southeast end of the Gertrude West Stormwater
Management Pond, and 150 metres of 300 mm diameter pipe extending from the decant to the existing Gertrude
wastewater holding pond; and

700 metres of 200 mm diameter pipe and a pumping system for transfer of mine water from the Gertrude West Open Pit
Mine to the gravity decant well.

Copper Cliff Wastewater Treatment Plant

Wastewater treatment works on Copper Cliff Creek rated to handle the total creek flow to a maximum hydraulic loading of
9,460 cubic metres per hour (60,000,000 US GPD), and including the following facilities:


one raw water pump well serviced with three water pumps each rated at a minimum 1059 litres per second (14,000 Imp
GPM) at a 13.7 metres (45 ft) head;

   one influent splitter box;

two reactor clarifiers each having a 41.1 metres (135 ft) diameter and 7 metres (23 ft) side wall depth with rake
mechanism and associated equipment;

   one outflow level control box;

   one lime slurry storage tank having a 177,912 Litres (39,135 Imp Gal) capacity;

   two lime slurry pumps rated at a minimum 227 litres per minute (50 IGPM) at a total head of 15.2 metres (50 ft);

 additional sludge piping system for the transfer of sludge from the reactor clarifiers, including three (3) centrifugal sludge
pumps, each with a rated capacity of 2,840 Litres per minute (624 IGPM), with one pump operating on standby,
discharging to the Copper Cliff Tailings Area; and

   effluent pH adjustment system consisting of;


        - dosing system for sulphuric acid, with a 74.4 cubic metre cylindrical acid storage tank located within a
        containment area having a capacity of 120 cubic metres, two dosing pumps each having a capacity of 12.1 Litres
        per minute, two acid diffusers within the new mixing/reaction tank, and a pH control system consisting of a pH
        probe box and interlocking controls to the acid dosing pumps; and

        - concrete mixing/reaction tank with two separate inlet chambers each measuring 0.91 metres by 2.33 metres, with a
        underflow baffle separating the inlet basin from the mixing basin, with acid diffusers at the invert level of each
        overflow pipe from the reactor clarifier to the mixing basin, with each diffusers having a diameter of 25 mm, with 3
        millimetre diameter outlet holes along a length of 1.37 metres, with inlet section underflow to mixing/reaction
        chamber with a length of 3.55 metres, a width of 4.88 metres, divided by two partial wall having length of 3.96
        metres, and with discharge via a 1,067 millimetre diameter pipe to Copper Cliff Creek.


Milling Rationalization Program

Alteration and modifications to the sewage works to accommodate the implementation of the proposed Milling
Rationalization Program, a part of the Countdown Acid Rain Strategy, to generally include the design and construction of
new process facilities and the relocation and deactivation of others, located in the Regional Municipality of Sudbury
consisting of the undertakings listed in Schedule "C".

Additional Waste Disposal Areas

 expansion of the existing solid non-hazardous industrial waste disposal area(for disposal of waste generated from CVRD
Inco Limited Sudbury Operations) within the approved tailings area to a total of 205 ha, providing a total storage capacity
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of 20.5 million m3; and

 construction and operation of a second asbestos waste disposal area within the approved tailings area, providing a
storage capacity of 91,800 m3 for asbestos waste generated from CVRD Inco Limited Sudbury Operations.

Sanitary Sewage Treatment

Rerouting of the existing treated sewage effluent from the Copper Cliff Sewage Treatment Plant (CCSTP) discharging to
the Copper Cliff Tailings Area (CCTA), to be piped directly to the influent of the Copper Cliff Wastewater Treatment Plant
(CCWWTP), through a piping system extending from the CCSTP to the influent of the CCWWTP, with a second pipe to
serve as a backup in case of failure, as follows:

 collection of a maximum of 3,270 cubic metres per day of process effluent and sanitary sewage from the nickel refinery,
and collection of run-off from a catchment area of 21.9 hectares comprising the nickel refinery southeast corner, east
plant and old acid plant storage area, and transmission via a 1.22 metre diameter HDPE pipe, to a new collection pond
having a total volume of 9,629 cubic metres, side slopes of 4H:1V, with a normal operating level of 1.37 metres, and with
an adjacent drying pad for receiving material dredged from the pond;

 collection of cooling tower overflow and run-off from a catchment area of 7.8 hectares comprising the nickel refinery
gas storage area and west plant, and transmission via a 0.91 metre diameter HDPE pipe, to the collection pond outlet
structure, with pond outlet structure discharging via 0.46 metre diameter HDPE pipe to the IORP Main Collection Pond;

 collection of 2,180 cubic metres per day of process effluent and sanitary sewage from the Iron Ore Recovery Plant
(IORP) roaster building, and collection of run-off from a catchment area of 25 hectares comprising the IORP yard, and
transmission via 0.46 metre diameter HDPE pipe to the IORP Main Collection Pond;

 IORP Main Collection Pond, having a capacity of 8,166 cubic metres, with side slopes of 3H:1V, connected to an
adjacent pond by an overflow weir, with adjacent pond having a capacity of 18,170 cubic metres, with transmission of
pond effluent via an existing pumphouse to the IORP roaster building pump system at a maximum rate of 9,265 cubic
metres per day, and then to the R1 Tailing Area, via 0.46 metre diameter piping,

 one (1) approximately 488 metre pipeline with an approximate diameter of 300 millimetres from Creighton's number 9
shaft area and discharging to a pond at Creighton's number 7 shaft area;


 construction of a storm water collection trench to intercept run-off that currently reports to local watershed. The trench
will be 3.7 metres in width and approximately 1,020 metres in length. The estimated minimum depth of the trench in
bedrock will be 1.8 metres, with the overburden section having a 2:1 slope (horizontal to vertical) with the grade varying
from 0.1% to 2.0%;


transmission of run-off underground via a drainage drift where it will join other waters that report to the Frood-Stobie
Complex for treatment at either CVRD Inco’s Copper Cliff Waste Treatment Plant or the Nolin Creek Waste Water
Treatment Plant;


the installation of stormwater collection pond with approximate volume of 140,000 cubic metres with the transmission of
wastewater to the Waste Water Treatment Plant for treatment and discharge;

 one (1) off-line stormwater detention pond located south of the Frood-Stobie Air Strip designed to provide an adequate
storage capacity for storm events with 1:10 year return frequency, with an estimated storage volume of 4,375 m3 and
having an outside top dimensions of 72 m x 138 m long, sides with 4:1 slopes, and 26 m x 62 m long bottom at an
elevation of 276.6 m;


 one (1) drainage weir located downstream of the stormwater detention pond equipped with 8" x 8" stop-logs, manually
operated 12" gate valve, and 6" stainless steel inlet and outlet pipes, discharging through the existing drainage tunnel into the
Stobie Mine; and
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 installation of a seepage collection/diversion system to transmit seepage by gravity from the South-East Section of the R4
Area to the Whissel Seepage Station. The collection/diversion system will span a distance of approximately 850 metres,
utilizing low permeability material with or without geomembrane for dams and berms and diversion channels in conjunction
with bedrock and concrete for spillways.
Other

All other controls, electrical equipment, instrumentation, piping, pumps, valves and appurtenances essential for the proper
operation of the aforementioned sewage works;

all in accordance with the items listed in Schedule “A”.

For the purpose of this Certificate of Approval and the terms and conditions specified below, the following definitions
apply:

(1) "Director" means any Ministry employee appointed by the Minister under Section 5 of the Ontario Water Resources
Act;

(2) "Regional Director" means the Regional Director of the Northern Region of the Ministry of the Environment;

(3) "District Manager" means the District Manager of the Sudbury District Office of the Ministry of the Environment;

(4) "Certificate" means the entire certificate of approval, issued in accordance with Section 53 of the Ontario Water
Resources Act;

(5) "Ministry" means the Ministry of the Environment;

(6) "Owner" means CVRD Inco Limited and includes its successors and assignees;

(7) "m3/hr" means cubic metres per hour;

(8) "mg/L" means milligrams per litre; and

(9) "Works" means the sewage works described in the Owner's application, this certificate and in the supporting
documentation referred to herein, to the extent approved by this certificate.

You are hereby notified that this approval is issued to you subject to the terms and conditions outlined below:

TERMS AND CONDITIONS

1. REQUIREMENTS

The requirements specified in this Certificate are the requirements under Section 53 of the Ontario Water Resources Act.
The issuance of this certificate in no way abrogates the Owner's legal obligations to take all reasonable steps to avoid
violating other applicable provisions of this legislation and other legislation and regulations.

2. SEVERABILITY

            (1) The requirements of this certificate are severable. If any requirement of this Certificate, or the application
            of any requirement of this certificate to any circumstance, is held invalid, the application of such requirement
            to other circumstances and the remainder of this Certificate shall not be affected thereby.

            (2) In the event of a conflict between information submitted in support of the application for this certificate,
            whether referred to in this certificate or not, and any term or condition of this certificate, the term or condition
            shall prevail.


3. COMPLIANCE
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The Owner must ensure compliance with all the terms and conditions of this certificate. Any non-compliance constitutes a
violation of the Ontario Water Resources Act and is grounds for enforcement.

4. INFORMATION

The Owner shall furnish to the Regional Director any information which the Regional Director may request pursuant to
Section 32 of the Ontario Water Resources Act, and copies of any records required to be kept by this Certificate.

5. ENTRY AND INSPECTION

            The Owner shall allow the Ministry's Provincial Officer or District Manager or its designee to:

            (1) carry out any and all inspections authorized by section 156, 156a or 157 of the Environmental Protection
            Act, section 15, 15a or 15b of the Ontario Water Resources Act or section 19 or 19a of the Pesticides Act, as
            amended from time to time, of any place to which this Certificate relates;

            (2) enter at reasonable times upon the premises where the approved works are located, or the location where
            the records required by the conditions of this Certificate are kept;

            (3) have access to and copy, at reasonable times, any records required by the conditions of this Certificate;

            (4) inspect at reasonable times any facilities, equipment (including monitoring and control equipment),
            practices, or operations required by the conditions of this Certificate; and to

            (5) sample and monitor at reasonable times for the purposes of assuring compliance with the conditions of this
            Certificate.


6. ADVERSE IMPACT

The Owner shall take all reasonable steps to minimize any adverse impact to surface or ground waters resulting from non-
compliance with the effluent requirements specified in this Certificate including, but not limited to, such accelerated or
additional monitoring as necessary to determine the nature and impact of the discharge in respect of which there is non-
compliance.

7. POWER FAILURE

In order to maintain compliance with the effluent limitations and conditions of this Certificate, the Owner shall take all
necessary action to minimize discharges upon the reduction, loss or failure of the power source to the sewage works.

8. OPERATION AND MAINTENANCE

            (1) The Owner shall ensure that at all times, the sewage works and related equipment and appurtenances
            which are installed or used to achieve compliance with this Certificate are properly operated and maintained.

            (2) The Owner shall prepare/update an operations manual within six (6) months of the date of issuance of this
            Certificate, which includes as a minimum:

                         (a) operating procedures for routine operation of the Works;

                         (b) inspection programs, including frequency of inspection of the Works and the methods or tests
                         employed to detect when maintenance is necessary;

                         (c) repair and maintenance programs, including the frequency of repair and maintenance, for the
                         Works;

                         (d) any other plans and procedures which are necessary because of the special nature of the
                         facilities served by the works, the materials used in those facilities or in the Works, the Works itself
                         or the location thereof;
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                    (e) complaint procedures for receiving and responding to public complaints, including a reporting
                    system which records what steps the owner took to determine the cause of the complaint and
                    what corrective measures were taken to alleviate the cause and prevent its recurrence;

                    (f) a list of the personnel positions responsible for the operation, recording and reporting of the
                    works pursuant to the requirements of this certificate, along with the training and experience
                    required for the positions and a description of the responsibilities; and

                    (g) contingency plans and procedures for dealing with potential bypass situations approved in
                    accordance with Condition No. 9 of this Certificate.

        (3) Upon completion of the operations manual in accordance with subsection (2) but prior to its
        implementation, the Owner shall submit a copy of the operations manual to the District Manager, (for his
        records only) and thereafter the Owner shall maintain the operations manual, as revised from time to time, at
        the location of the works for so long as it is in operation and shall submit all proposed changes in the manual
        to the District Manager (for his records only) prior to their implementation.

        (4) The Owner shall keep the operations manual up to date through revisions undertaken from time to time, so
        as to reflect any changes in described operation and maintenance procedures for the Works or any newly
        introduced operation and maintenance procedures made necessary by good engineering practice, this
        Certificate or the requirements of the Ministry.

        (5) The Owner shall inform the Regional Director, in writing, whenever any discharge pipe is added or
        undergoes a major relocation (excepting the disposition of tailings in the normal course of operation of the
        facility) or the point of introduction of any other sewage is to be altered within the confines of the approved
        works. Such written notice will be given at the first possible opportunity, and in advance of the change unless
        it is impossible to give advance notice due to the unforeseen or emergency nature of the change.


9. BYPASSES

        (1) Untreated sewage shall not be discharged to Copper Cliff Creek from the sewage works except after all
        practical measures have been taken to prevent or reduce the bypass flow, when operating at or above the
        sewage works treatment capacity.

        (2) The Owner shall sample and analyze all bypasses for all of the parameters listed in Condition 11, should the
        incident exceed a four hour duration.

        (3) The Owner shall, within (30) days of the occurrence of each incident, submit a full written report in
        respect of the incident containing the following:

                                 (i) the time, location, duration, estimated quantity and total loadings of each bypass
                                 incident described in subsection (2),
                                 (ii) the reason for the incident; and
                                 (iii) steps that have been taken or planned to eliminate, reduce or prevent the
                                 recurrence of a bypass incident.


10. EFFLUENT REQUIREMENTS

        The sewage works effluent quality requirements are governed by Ontario Regulation 560/94 under the
        Environmental Protection Act, as amended.


11. SAMPLING/MONITORING REQUIREMENTS

        Monitoring of the effluent from the sewage works shall be performed in accordance with the monitoring and
        reporting requirements of Ontario Regulation 560/94 under the Environmental Protection Act, with the
        following additional monitoring requirements:
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            (1) A weekly grab sample shall be taken of the effluent from the sewage works, and analyzed for total
            ammonia.

            (2) The temperature and pH of the final effluent from the sewage works shall be determined at the time of
            sampling for total ammonia, and, the concentration of un-ionized ammonia shall be calculated using the total
            ammonia concentration, pH and temperature using the methodology stipulated in the Provincial Water Quality
            Objective for Ammonia.


12. REPORTING REQUIREMENTS

            The Owner shall submit to the Regional Director all reports required under Part VIII of O.Reg. 560/94, as
            amended from time to time, and keep records of the following additional items which are to be made available
            to Ministry staff upon request:

            (1) a description of any operating problems and the corrective action taken; and,

            (2) a description of any further modifications to the system that are required to improve the operation of the
            approved works, including a schedule for the implementation of the modifications.


13. MISCELLANEOUS

            (1) The Owner shall maintain records of storage areas, the amount and location of materials deposited within
            the tailings area.

            (2) The Owner shall prepare, and submit to District Manager, a deposition status report, on an annual basis, by
            June 1st for the previous calendar year. The first such report shall cover the first annual period following the
            issuance of this certificate and subsequent reports shall be submitted to cover successive annual periods
            following thereafter. The reports shall contain, but shall not be limited to, the following information:


                         (a) a summary of the specific storage areas for each substance listed in Schedule B;


                         (b) quantities of each substance listed in Schedule B that was disposed in specific storage areas;

                         (c) remaining storage capacity of each area listed under part (a) above, at the current disposal
                         rate; and

                         (d) any other information that the District Manager requires from time to time.

            (3) The Owner shall extend the existing monitoring program to sample for the miscellaneous materials
            deposited. The location for this additional sampling shall be at the entrance to the last treatment unit. The exact
            location and frequency of this sampling shall be acceptable to the District Manager.

            (4) The area receiving non-hazardous solid industrial wastes limited to waste generated by CVRD Inco
            operations shall be operated in accordance to the Operational Plan submitted by the Owner on December 7,
            1984 and subsequent updates approved by the District Manager.

            (5) The location receiving asbestos wastes shall be operated in accordance to the Operational Plan submitted
            by the Owner on February 22, 1985 and subsequent updates approved by the District Manager.

            (6) The Owner may dispose of sludge from the treatment pond at Whissel mine and sanitary sewage the
            Vermilion Water Treatment Plant, at a suitable location approved by the District Manager

                                                     SCHEDULE "A"

The following is a list of documents relied upon for the issuance of this Certificate Approval;
                                         CONTENT COPY OF ORIGINAL


(1) Certificate of Approval 4-0142-88-917 dated July 5, 1991, and all supporting documentation and information relied
upon for consolidation and issuance of the said certificate.

(2) Notice No. 1 dated September 25, 1992 to Certificate of Approval 4-0142-88-917, including all supporting
documentation and information relied upon for issuance of the notice.

(3) Notice No. 2 dated November 19, 1992 to Certificate of Approval 4-0142-88-917, including all supporting
documentation and information relied upon for issuance of the notice.

(4) Notice No. 3 dated November 22, 1993 to Certificate of Approval 4-0142-88-917, including all supporting
documentation and information relied upon for issuance of the notice.

(5) Notice No. 4 dated April 6, 1995 to Certificate of Approval 4-0142-88-917, including all supporting documentation and
information relied upon for issuance of the notice.

(6) Application for Approval of Industrial Sewage Works dated May 15, 1997, signed by B.J. Bell (Superintendent –
Environmental), Inco Limited, and all supporting documentation and information.

(7) Application for Approval of Industrial Sewage Works, dated May 30, 1997, signed by Brian J. Bell, (Superintendent –
Environmental), Inco Limited, and all supporting documentation and information.

(8) Application for Approval of Industrial Sewage Works dated February 17, 2000 and signed by Pat Thompson,
Superintendent, Safety, Health and Environment, Inco Limited, and all supporting information.

(9) Application for Approval of Industrial Sewage Works dated June 15, 2000 and signed by Pat Thompson,
Superintendent, Safety, Health and Environment, Inco Limited and all supporting information.

(10) Application for Industrial Sewage Works dated June 15, 2000 and signed by Wally Szumylo, Environment and Health
Coordinator, Inco Limited and all supporting information .

(11) Application for Approval of Industrial Sewage Works dated July 14, 2000 and signed by Pat Thompson,
Superintendent, Safety, Health and Environment, Inco Limited and all supporting information.

(12) Application of Industrial Sewage Works dated June 18, 2001 and signed by Dan Bouillon, Senior Environmental
Analyst, Safety, Health and Environment, Inco Limited and all supporting information.

(13) Application for Approval of Industrial Sewage Works submitted by Pat Thompson, Superintendent, Inco Limited,
dated January 29, 2002, and drawings and design specifications prepared by Inco Limited.

(14) Application for Approval of Industrial Sewage Works dated October 17, 2002 and signed by Rick Rienguette, Senior
Environmental Analyst Inco Ontario Operations and all supporting information.

(15) Application of Industrial Sewage Works dated November 14, 2003 and signed by Dan Bouillon, Senior Environmental
Analyst, Safety, Health and Environment, Inco Limited and all supporting information.

(16) Application of Industrial Sewage Works dated May 3, 2004 and signed by Dan Bouillon, Senior Environmental
Analyst, Safety, Health and Environment, Inco Limited and all supporting information.

(17) Application for Industrial Sewage Works dated January 03, 2006 by Inco Limited signed by Dave Taylor,
Superintendent and all supporting information for amending Industrial Works Certificate of Approval number 4123-
5U9KEA issued on August 31, 2004.
                                                    SCHEDULE "B"
This Schedule "B" forms part of the Certificate of Approval and lists approved wastes and the approved estimated quantity
of the particular waste:
                                               CONTENT COPY OF ORIGINAL


                                       Waste                                        Estimated             Estimated Quantity
                                                                                     Quantity                (Tonnes per year)
                                                                                (cubic metres per year)
    Tailings Material                                                                                          8,000,000
    Pyrrhotite                                                                                                 4,000,000
    Tailings from Ontario Research Facilities                                                                     150
    Weak Acid Treatment Plant Gypsum Sludge                                                                      70,000
    Mine Effluent:                                                                   1,820,000
                                                                                     1,370,000
          Creighton                                                                   910,000
          C.C. South                                                                 2,280,000
          C.C. North                                                                  682,000
          Frood                                                                      2,730,000
          Little Stobie                                                               200,000
          Stobie
          Abandoned/Standby Mine sites
    Sewage Wastes:                                                                    164,000
                                                                                       28,000
                Region of Sudbury                                                      28,000
                C.C. Sewage Sludge                                                     46,000
                C.C. South Mine                                                        32,000
                Frood                                                                  46,000
                Creighton                                                              64,000
                Stobie                                                                 68,000
                Clarabelle Mill
                C.C. Nickel Refinery
    Solid Wastes:                                                                                               250,000
                                                                                                                  500
                Non-hazardous solid wastes                                                                  54,000 to 90,000
                Asbestos
                Pulp and Paper Mill Biosolids
    Classified Wastes:                                                                 2,300                       30

                112 Acid solutions, sludges and residues containing heavy
                metals                                                                364,000
                114 Other inorganic acid wastes
                122 Alkaline solutions, sludges and residues containing other         864,000
                metals and non-metals, not containing cyanide
                132 Neutralized solutions, sludges and residues containing               200
                other metals                                                             300
                142 Primary smelting wastes
                146 Other specified inorganics
    Oil contaminated material from spills less than one metric tonne/spill
    N.B. : No small quantity exempted material under Reg 309.
                                                      SCHEDULE "C"

Phase I

Transferring of the magnetic and non-magnetic pyrrhotite treatment functions from Copper Cliff Mill to Clarabelle Mill
consisting of the following:

    installation of flotation cells at Clarabelle Mill;
    magnetic pyrrhotite processing at Clarabelle Mill;
    non-magnetic pyrrhotite processing at Clarabelle Mill;
    utilities and service requirements at Clarabelle Mill; and
                                            CONTENT COPY OF ORIGINAL


   process stream sampling at Clarabelle Mill.


Phase II

Deactivation of the Frood-Stobie Mill by increasing the capacity of Clarabelle Mill to approximately 36,000 tonnes/day of
ore feed consisting of the following:

   additional flotation cells and expansion of magnetic and non-magnetic pyrrhotite processing capacity at Clarabelle Mill;
   tailings sand supply and storage at Frood-Stobie complex;
   ore loadout and ore transportation facilities at Frood-Stobie complex;
   expanded ore comminution circuit at Clarabelle Mill; and
   additional utilities, services and ore storage requirements at Clarabelle Mill.


The reasons for the imposition of these terms and conditions are as follows:

1. Condition No. 1 is included to emphasize that the issuance of the certificate does not diminish any other statutory and
regulatory obligations to which the Owner is subject in the construction, maintenance and operation of the works.

2. Condition No. 2 is included to clarify how the Certificate is to be judicially interpreted and specifically, to clarify that the
requirements of the certificate are severable and that they prevail over supporting documentation.

3. Condition No. 3 is included to emphasize that the Owner is under a statutory obligation to ensure compliance with the
Certificate.

4. Condition Nos. 4 and 5 are included to ensure that Ministry personnel, when acting in the course of their duties, will be
given unobstructed access to the facilities, information and records related to the works which are the subject of this
certificate, to enable the Ministry to be assured of the Owner's compliance with the terms and conditions of this
Certificate.

5. Condition No. 6 is included to emphasize that the Owner has an ongoing duty to mitigate any adverse impacts resulting
from non-compliance with the Certificate.


6. Condition No. 7 is included to ensure that impairment of the power supply to the Works will not result in non-
compliance with the Certificate.

7. Condition No. 8 is included to ensure that the works will be operated, maintained, funded, staffed and equipped in a
manner enabling compliance with the terms and conditions of this Certificate, such that the environment is protected and
deterioration, loss, injury or damage to any person or property is prevented. This Condition is also included to ensure that
an operations manual is prepared that will outline the operations procedures which will be followed in the operation of the
sewage works. Condition No. 8, subsection (5 ) is imposed in order to ensure that the Owner informs the Regional
Director whenever any discharge pipe is to undergo a major relocation or the point of introduction of any other sewage is
to be altered within the confines of the sewage works.

8. Condition No. 9 is included to clearly set out that bypasses of untreated sewage to the receiving watercourse is
prohibited, save in certain limited circumstances where the failure to bypass could result in greater injury to the public
interest than the bypass itself, or where the bypass can be limited or otherwise mitigated by handling it in accordance with
an approved contingency plan. The notification and documentation requirements allow the Ministry to take timely
abatement and enforcement action in an informed manner and will allow the Owner to be aware of the extent and
frequency of bypass events.

9. Condition No. 10 is imposed to ensure that the effluent discharged from the works to the receiving waters meets the
Ministry's effluent quality requirements as specified on a continual basis thus minimizing environmental impact to the
receiving watercourse.

10. Condition No. 11 regarding monitoring is required of the Owner in order that the Owner can demonstrate the quality of
                                                  CONTENT COPY OF ORIGINAL


the effluent from the sewage works on a consistent basis, and to minimize impairment of receiving water quality due to the
effluent discharges from the sewage works.

11. Condition No. 12, is included in order that the Owner report to the Ministry on a regular basis on the performance of its
approved wastewater treatment and control system to ensure that early corrective action is taken by the Owner if operating
problems develop, and to ensure that any future improvements to the operation of the control system are scheduled for
implementation at an early date.

12. Condition No. 13, subsection (1) is imposed in order to ensure that the Owner keeps records of the amount and
location of materials deposited.

13. Condition No. 13, subsection (2) is imposed in order to enable determination as to whether the material being deposited
within the tailings area is having any effect on the treatment system.

14. Condition No. 13, subsection (3) is imposed in order to ensure that the location specified in this condition is the same
location as approved under Provisional Certificate of Approval for Waste Disposal No. A5410213 dated October 10, 1984.

15. Condition No. 13, subsection (4) is imposed in order to ensure that the location specified in this condition is the same
location as approved under Provisional Certificate of Approval for Waste Disposal No. A541009 dated February 9, 1982.

16. Condition No. 13, subsection (5) is imposed in order to ensure that the disposal of the wastes specified is performed
and disposed in accordance with the Owner's operating plan.



This Certificate of Approval revokes and replaces Certificate(s) of Approval No. 1940-6RDHLN, 4-0142-88-978
issued on July 12, 2006, August 13, 1997

In accordance with Section 100 of the Ontario Water Resources Act, R.S.O. 1990, Chapter 0.40, as amended, you may by
written notice served upon me and the Environmental Review Tribunal within 15 days after receipt of this Notice, require
a hearing by the Tribunal. Section 101 of the Ontario Water Resources Act, R.S.O. 1990, Chapter 0.40, provides that the
Notice requiring the hearing shall state:

1. The portions of the approval or each term or condition in the approval in respect of which the hearing is required, and;
2. The grounds on which you intend to rely at the hearing in relation to each portion appealed.

The Notice should also include:

3. The name of the appellant;
4. The address of the appellant;
5. The Certificate of Approval number;
6. The date of the Certificate of Approval;
7. The name of the Director;
8. The municipality within which the works are located;

And the Notice should be signed and dated by the appellant.

This Notice must be served upon:

The Secretary*                                   AND                                              The Director
Environmental Review Tribunal                                                                     Section 53, Ontario Water Resources Act
2300 Yonge St., Suite 1700                                                                        Ministry of the Environment
P.O. Box 2382                                                                                     2 St. Clair Avenue West, Floor 12A
Toronto, Ontario                                                                                  Toronto, Ontario
M4P 1E4                                                                                           M4V 1L5

* Further information on the Environmental Review Tribunal’s requirements for an appeal can be obtained directly from the
Tribunal at: Tel: (416) 314-4600, Fax: (416) 314-4506 or www.ert.gov.on.ca
                                       CONTENT COPY OF ORIGINAL


The above noted sewage works are approved under Section 53 of the Ontario Water Resources Act.


DATED AT TORONTO this 22nd day of May, 2007
                                                                Mohamed Dhalla, P.Eng.
                                                                Director
                                                                Section 53, Ontario Water Resources Act
SH/
c: District Manager, MOE Sudbury
Wendy Wisniewski, CVRD Inco Limited

				
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