Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on May 13, 1992.
As of Thursday, June 20th, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

Models
1992 and older model year diesel powered engine with displacement between 6.0 and 14 liters

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-249
  • Executive Order 249 / D249
  • ARB # D-249
  • Executive Order No: D-249
  • C.A.R.B. No. D-249
  • Resolution D-249
For Free CARB Executive Order Status verification, email an image of the device Executive Order label as well as the Year/Make/Model and Test Group # of the vehicle to [email protected]

Download: Executive Order D-249 PDF

D-249 Document:



                                                       (Page 1 of 2)

                               State of California
                               AIR RESOURCES BOARD

                               EXECUTIVE ORDER D—249
                  Relating to Exemptions Under Section 27156
                             of the Yehicle Code

                           DONALDSON COMPANY, INC.
                   DONALDSON DIESEL PARTICULATE TRAP SYSTEM




                                                                                       anmenm o+ sn nvemnpem immn cmnrernmmnirmninmenmrementmamnzmnc
Pursuant to the authority vested in the Air Resources Board by Section 27156
of the Vehicle Code; and

Pursuant to the authority vested in the undersigned by Sections 39515 and
39516 of the Health and Safety Code and Executive Order G—45—5;

 IT IS ORDERED AND RESOLYED:     That the installation of the Donaldson Diesel
Pfarticulate Trap System (dual wallflow ceramic monolith) comprised of a
 heater element, filter monolith, blower, micro—processor and air intake
 sensor, manufactured by Donaldson Company, Inc. of P. 0. Box 1299,
Minneapolis, MN 55440—1299, has been found not to reduce the effectiveness
 of the applicable vehicle pollution control system and, therefore,    is exempt
 from the prohibitions of Section 27156 of the Vehicle Code for 1992 and
 older diesel—powered engines with a displacement between 6.0 liters and 14.0
 liters.

 This Executive Order is valid provided that installation instructions for
  his particulate trap will not recommend tuning the vehicle to




                                                                                   evese
  pecifications different from those submitted by Donaldson Company, Inc.

{ Changes mada to the design or operating conditions of the particulate trap,




                                                                                                             omm
                                                                                          wonmemers rommmngpers=>
. as exempt by the Air Resources Board, which adversely affect the performance
  of a vehicle‘s pollution control system shall invalidate this Executive
  Order .

Marketing of this particulate trap using any identification other than that
shown in this Executive Order or marketing of this particulate trap for an
application other than those listed in this Executive Order shall be
prohibited unless prior approval is obtained from the Air Resources Board.
Exemption of the particulate trap shall not be construed as exemption to
sell, offer for sale, or advertise any component of the kit as an individual
device.

This Executive Order does not constitute any opinion as to the effect the
use of this particulate trap may have on any warranty either expressed or
implied by the vehicle manufacturer.

THIS EXECUTIVE ORDER DOES NOT CONSTITUTE A CERTIFICATION, ACCREDITATION,
APPROVAL, OR ANY OTHER TYPE OF ENDORSEMENT BY THE AIR RESQURCES BOARD Of
CLAIMS OF THE APPLICANT CONCERNING ANTI—POLLUTION BENEFITS OR ANY ALLEGED
BENEFITS OF THE DONALOSON COMPANY, INC.‘S DIESEL PARTICULATE TRAP SYSTEM.


   DONALCSON COMPANY, INC.                            EXECUTIVE ORDER D—249
   DIESEL PARTICULATE TRAP SYSTEM                     (Page 2 of 2)



.No claim of any kind, such as "Approved by the Air Resources Board" may be
  made with respect to the actton taken herein in any advertising or other
   oral or written communication.

   Violation of any of the above conditions shall be grounds for
   revocation of this order.  The order may be revoked only after ten day
   written notice of intention to revoke the order, in which period the holder
   of the order may request in writing a hearing to contest the proposed
   revocation. If a hearing is requested, it shall be held within ten days of
   receipt of the request and the order may not be revoked until a
   determination after hearing that grounds for rjiffation exist.
                                               p—
   Executed at El Monte, California, this _zfiél day    qf May, 1992.




                                          Assi?tant Division Chief
                                          Mobile Source Division


                         State of California
                         AIR RESOURCES BOARD




EVALUATION OF DONALDSON COMPANY, INC.‘S DIESEL PARTICULATE TRAP SYSTEM
     >      FOR EXEMPTION FROM THE PROHIBITIONS OF VEHICLE
 CODE SECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13, OF THE
                    CALIFORNIA CODE OF REGULATIONS




                              May 1992


                            State of California
                            AIR RESOURCES BOARD




   EVALUATION OF DONALDSQON COMPANY, INC.‘S DIESEL PARTICULATE TRAP SYSTEM
                FOR EXEMPTION FROM THE PROHIBITIONS OF VEKHICLE
    CODE SECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13, OFf THE
                        CALIFORNIA CODE OF REGULATIONS




                                     by
                           Mobile Source Division
                            State of California
                            Air Resources Board
                            9528 Telstar Avenue
                          E1 Monte, CA 91731—2990



(This report has been reviewed by the staff of the California Air Resources
Board and approved for publication. Approval does not signify that the
contents necessarily reflect the views and policies of the Air Resources
Board, nor does mention of trade names or commercial products constitute
endorsement or recommendation for use.)


@                                    sumser
          Donaldson Company, Inc., of P. 0. Box 1299, Minneapolis, Minnesota

5§5440—1299, has applied for an exemption from the prohibitions in Section 27156

of the California Vehicle Code (VC) for the Donaldson Diesel Particulate Trap

System.     The particulate trap is designed for installation on all 1992 and

older diesel—powered engines with displacements between 6.0 and 14.0 liters.

          Based on the results from emission tests performed at an independent

laboratory on a 1990 Detroit Diesel 6V—92TA DDEC diesel bus engine, the staff

concludes that Donaldson Company, Inc.‘s Diesel Particulate Trap System will

not adversely affect exhaust emission from vehicles for which an exemption is

requested.

          The staff recommends that Donaldson Company, Inc. be granted an

    ption as requested and that Executive Order D—249 be issued.


                                                                Page Number



SUMMARY                                                               1

CONTENTS                                                             i1

I.        INTRODUCTION                                                1

II.       CONCLUSION                                                  1

I1I.      RECOMMENDATION                                              1

IV.       DEVICE DESCRIPTION                                          2

¥.        PARTICULATE TRAP EVALUATION AND DISCUSSION                  4

          APPENDIX

          APPENDIX A:    DIAGNOSTIC TROUBLE CODES

          APPENDIX B:      PARTICULATE TRAP SCHEMATIC

          APPENDIX C:      COMPOSITE RESULT EVALUATION METHOD




                                            11


       EVALUATIQON OF DONALDSON COMPANY, INC.‘S DIESEL PARTICULATE TRAP SYSTEM
                     FOR EXEMPTION FROM THE PROHIBITIONS OF VEHICLE
        CODE SECTIQN 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13, OF THE
                           CALIFORNIA CODE OF REGULATIONS




I.        INIRODUCTION

          Donaldson Company, Inc. of P. 0. Box 1299, Minneapolis, Minnesota 5540—

 1299, has applied for an exemption from the prohibitions in Section 27156 of

the California Vehicle Code for the Donaldson Diesel Particulate Trap System.

 The particulate trap is designed for installation on 1992 and older model—year

diesel—powered engines with displacements between 6.0 liters and 14.0 liters.

          Donaldson Company, Inc. has submitted data from emission tests conducted

 on a 1990 Detroit Diesel 6¥—92TA DDEC bus engine at the United States

 Environmental Protection Agency laboratory, Ann Arbor, Michigan.



II.       CONCLUSIONS
,         Based on the results from emission test conducted at the United States

 nvironmental Protectton Agency laboratory on a 1990 Detroit Diesel 6V—92TA

DDEC bus engine, the staff concludes that Donaldson Company, Inc.‘s Diesel

Particulate Trap System will not adversely affect exhaust emissions from

vehicles for which an exemption is requested.



1II.     RECOMMENDATION
         The staff recommends that Donaldson Company, Inc. be granted Executive

Order D—249 for exemption of their Diesel Particulate Trap System for

installation on 1992 and older model—year diesel—powered engines with

displacements between 6.0 liters and 14.0 liters.


  IV.       DESCRIPTION
            The Donaldson Diesel Particulate Trap System is designed for

  installation on 1992 and older model—year diesel—powered engines with

  displacements between 6.0 liters and 14.0 liters.      It functions as an automatic

  diesel engine exhaust particuiate filter, oxidizer, and muffler system.         Engine

  exhaust flows into a cleaner assembly that catches and holds the exhaust

  particulate.     When the filter element is full, the engine exhaust is diverted

  to a second cleaner assembly and the first one is automatically regenerated, or

  cleaned.     Exhaust particulate continues to accumulate in the second cleaner

  until its element is full.      fEngine exhaust is then routed back to the first

  cleaner, the second cleaner regenerates, and the cycle is repeated.       The

  Donaldson Diesel Particulate Trap System consists of several interrelated

 ‘subsystems: the air and exhaust system, heater system, sensor system, control

  system and the diagnostic system.      The kit operates in conjunction with the

   riginal equipment manufacturer {OEM) emission control systems already

Qrtified with the stock engine.        The tune—up specifications remain the same.

            The air and exhaust system components include the engine air cleaner, an

  engine intake air flow sensor, engine exhaust piping, exhaust cleaners, exhaust

  tail pipes and a mechanical exhaust pressure relief valve.      The air and exhaust

  system assembly serves two primary purposes:      it filters the engine exhaust to

  remove particulate matter and it reduces the exhaust noise level to satisfy

  noise pollution requirements.

         The heater system consists of an electrical resistance coil heater

 element, a ceramic heat reflecting disc, an electric relay and a circuit

 breaker.     The system‘s function is to heat the trapped particulate to ignition

 temperature so that it will burn and can be passed to the atmosphere in a


  gaseous form, the regeneration cycle.

          The sensor system monitors pressure and temperature inputs from the

‘ystem.     It includes pressure transducers and thermocouples.    The output

  information consists of electrical signals sent to the controller.     The control

  system, consisting of a microprocessor, thermocouple interface module, and

  wiring harness, monitors the condition of the cleaner assemblies and controls

  the filter element loading and regeneration cycles.

          Three types of sensors are used to determine when a filter element is

  full, a pressure transducer provides a differential pressure reading across the

  filter element, a thermocouple measures the temperature at each filter element

  inlet, and an air flow sensor measures engine intake air flow.    The controller

  microprocessor uses this information to monitor the filter element load and to

  initiate and control the cleaner switching and regeneration process.

  Regeneration consists of heating the particulate caught in the filter element

  to a temperature at which it oxidizes or burns.   A blower injects air into the

    eaner to provide oxygen required to burn the particulate and to expel the gas

  out of the particulate trap to the exhaust tail pipe in a gaseous form.

          The diagnostic system assists in determining the cause of mailfunctions

  as well as alert the vehicle operator of its occurrence.   A sgrvice light is

  mounted on the instrument panel so the vehicle operator will know when a fault

  has occurred in the particulate trap system.   The light is illuminated when the

  vehicle run switch is in the "on" position and the engine is not running.      When

  the engine is started and the RPM cutout is energized, the light will turn off

  if certain diagnostic codes do not exist in the particulate trap system.      If

  there are active codes, the service light will be illuminated when the engine

  is running.   There are two types of codes, active codes and historic codes.


   The active code indicates a condition that has occurred since the engine was

   last started, while a historic code indicates a condition that occurred prior

Qc the last time the engine was stopped and then restarted.        A fault that

   occurs, but does not recur after an engine stop and restart, will result in a

   historic code without a corresponding active code.     Appendix A contains a list

   of the diagnostic codes used for the particulate trap system.     Appendix B

   contains a schematic of the Donaldson Particulate Trap System.



   Y.     PARTIICULATETRAPEVALUATIONANDDISCUSSION
          A 1990 Detroit Diesel 6V—92TA DDEC diesel bus engine was used for the

   evaluation of the Donaldson Diesel Particulate Trap System.     Donaldson Company,

   Inc. also submitted test data conducted by Chevron Research and Technology

   Company on an Detroit Diesel 6V—92TA engine using the Central Business District

   Cycle but the test data was not used in the evaluation since baseline emission

   levels using the same test engine were not provided.

.         Emission tests against the baseline were conducted by the United States

   Environmental Protection Agency Laboratory for Donaldson Company, Inc.

   consisting of one Heavy—Duty Federal Test Procedure emission test in the

   baseline configuration and one Heavy—Duty Federal Test Procedure emission test

   in the modified (particulate trap system) configuration.     During the

   particulate trap emission test, emission measurements were performed when the

   particulate trap was regenerating.     Appendix C contains the composite result

   evaluation method which shows how the regeneration portion was compiled in the

   final emission test results.   The regeneration weighing factor (1/6) is
   conservative compared to the weighing factor currently used by the original

   equipment manufacturers (1/12—1/20).    This calculation procedure is designed to


   generate an emission result/value which approximates the average emission rate

   that the system would generate in the field.     A critical assumption of this

   procedure is that a heavy—duty Federal Test Procedure which occurs when a trap

   is half—loaded generates emission results which represent an average of those

   produced throughout the loading of a trap.      The ARB did not perform tests to

   confirm the test results submitted by the applicant.         A summary of the test

   results is shown below;:


                             Exhaust Emissions Test Results
                 On A 1990 Detroit Diesel 6V—92TA DDEC Diesel Bus Engine

   Test                Exhaust Emissions (gm/BHP—hr)
   Mode                HG             £Q             NOx                  PM        PMc*

   Device                .592           3.015           4.830              .053     .092
   Baseline              696            2.543           5.015              .352     .391
   Standard             1.3            15.5             6.0                .60

   * Corrected for use of low sulfur fuel.


            The device emission test results did not show any significant increase

. ‘1 emissions.

            The staff also reviewed the durability of the particulate trap system

   and its impact on emission performance of the affected vehicles.         Donaldson has

   been field testing their particulate trap system on a fleet of 400 urban buses

   in New York for approximately 3 years with mifiima] problems.         With the many

   hours of operation and its malfunction diagnostic capability, staff is

   confident the Donaldson Diesel Particulate Trap System will not affect the

   durability of the vehicle‘s emission control system.     Detroit Diesel is

   currently going through new engine certification using the Donaldson Diesel

   Particulate Trap System as a component.      While fhe Detroit Diesel particulate

   trap engine did have a failure during durability testing, it was due to a weld


in the particulate trap bracket and not the actual particulate trap system.

The bad weld caused the heater coils to deteriorate and fail.     The ARB,

however, allowed Detroit Diesel to replace the heater coils and continue

durability testing since the core was not damaged.   The core is the component

in the particulate trap which controls the emission values.     The staff viewed

the failure of the bracket weld as an installation problem committed by Detroit

Diesel, and not as a design deficiency of the particulate trap.

       Therefore, the installation of the Donaldson Diesel Particulate Trap

System will not have an adverse effect of exhaust emissions on the affected

vehicles.   Donaldson Company, Inc. submitted all the required information and

fulfilled the requirements for exemption.


Appendix


                          2e manual                                    APPENDIX A                        Diagnostlc Code Chart

                                                   i


             SYSTEM DIAGNOSTK# CODE CHART

                                                       .                                                    GO TO
                          DIAGNOSTIC CODES                                             CHECK            REPAIR SECTION

                    10       Space between Software
                             Version and Active and
                             Historic Codes
                    11|      No codes in the system
                   12*       |#2 inlet remperature low for Heater power —12V & 24V                                 1
    ,                        regencration                  |               Vehicle charging system              11
    i                                                      |                                            & Vehicle Mfr Info
                                                           [               Inlet valve                          2
    C                                                      |               Thermocouple                         7
                                                               |           TIM                                     8
i                                                              |            ECM                                    8
'                  13*       |#1 filter inlet remperature                   Thermocouple                           7
;                            too high during loading                        TIM                                    §
6                                                                  i        ECM                                    8
|                  14*       |#2 filter inlet temperature                   Thermocouple                           7
                             too high during loading                        TIM                                    8

                                                               |            ECM                                    8
                    15       |Engine air flow sensor over |Engine air flow sensor                                  6
        i                    range                             ‘           ECM                                     8
        :           16       —|Engine air flow sensor                      Engine air flow sensor               6
                             under range                                   ECM                                  g
                    17       |{Not used
                    18       |Not used
                   19        |Not used
                   20       Not used
                   21*      |#1 differential pressure                      Pressure transducer                 5
                            sensor above range                             Combustion air blower               4
                                                                             system
                                                   1                      TIM                                  8
                                                   [                      ECM                                  8
              NOTE: Codes marked with an asterisk (*) will iluminate an instrument panel light.

            2/27191                                                    © 1991 Donaldson Company, Inc.
            Shi1
                                                                            A—1


                                                      |                                                          Service Manual
          curer
                  ..aaasrsiio Code Chart


                                                      1
                                        |                                                                   GO TO
     ‘                  DIAGNOSTIC CODES                                          CHECK                 REPAIR SECTION

                  22      |#1 differential pressure too               Inlet valve                                2
                          high for cleaner not        |               Pressure transducer                        5
                          processing exhaust >                        TIM                                        3

                                                                      ECM                                        8
                  23*     |#2 differential pressure                   Pressure transducer                        5
                        : sensor above range          i               Combustion air blower                      4
                                                                         system
                                                                      TIM                                        8
                                                      i               ECM                                        8
                   24     |#2 differential pressure too               Inlet valve            ;                   2
                          high fo‘f cleaner not           |           Pressure transducer                        5
                          processing exhaust                          TIM                                        §3

                                                          |           ECM                                        8
                  25      |Not used
                  26      |#1 temperature too low at                  |Thermocouple                              7
 :                        high engine air flow during                 |ppyf
     ~,                   loading                |
                                                 i                    ECM
                  27      |Not used
 :                28      |#2 temperature too low at                  Thermocouple
 .                        high engine air flow duriag                 qy                                         g
i                         loadi
 j                        cacing                                      ECM
                  29      |Notused
                  30*    |#1 inlet temp low for :                     Heater power —12V & 24V                    1
                         regeneration                         ‘       Vehicle charging system               so   o
                                                                                    *                   & Vehicle Mfrf Info
                                                                      Inlet valve                                2
                                                                      Thenmnocouple                              7
                                                                     TIM                .                        8
                                                          1          ECM                    <o                   8
                  31|    Not used                         |
                  32     |Not used                    |
ul                  "E: Codes marked with an asterisk (*) will illuminate an ix{slrumcnt panel light.



          B—2                                         _           © 1991 Donaldson Company, Inc.                        2127191
                                                                                                                              S


                                                                          A~2


        curvieeManual                                                                                Diagnostlc Code Chart




                   BIAGNOSTIC CODI%S                                               CHECK          REPAIGROS’fi(()I’I‘ION

             33|    Not used
             34     |#1 differential pressure                        Pressure transducer                    5
                    sensor below range                               TIM                                    8

                                                             |       ECM                                    8
             35      |#2 differential pressure                       Pressure transducer                    5
                    sensor below range _                             TIM                                    g
                                                         }           ECM                                    8
             36     Back pressure sensor below Pressure transducer                                          5
                    range                      TIM                                                          8
                                               ECM                                                          8
             37|    24V vehicle battery voltage                      Vehicle charging system               11
                    too low                              ‘                                        & Vehicle Mff Info
                                                                     Combustion air blower                  4
                                                                        system
                                                                     TIM                                    8
                                                     i               ECM       .                            8
             38     |12V vehicle battery yoltage Vehicle charging system                                  11
                    too low              :                                                        & Vehicle Mfr Info
;|          39      |Notused
       ~ 40         Not used
            41|     Not used                     i
            42|     Not used
            43      |Not used
            44*     |#1 temperature above range Thermocouple                                               7
                                                                    TIM        _                           8
                                                                    ECM                                    8
            45*     |#2 temperature above range Th(:rmocoup’lc                                             7
                                        ;       TIM                                                        8
                                             |                      ECM                                    8
            46     Not used              |
      NOTE: Codes marked with an astérisk (*) will illuminate an instrument panel light.
                                         f


     2/27191                                                     © 1991 Donaldson Company, Inc.
     Skin

                                                                     A~3


                                                                                                     Service Manual
      ,eeagnoSde Code Chart




                                                    ;                                         co To
                  DIAGNOSTIC CODES                                     CHECK             REPAIR SECTION

           47      Not used
 i
 P
|i
           48 —    Not used
       49*         Back pressure sensor above Pressure transducer                                5
                   range                      TIM                                                8
                                                           ECM                                   8
        50         24V vehicle battery voltage Vehicle charging system                           11
                   too high                                        ‘                     & Vehicle Mfr Info
                                               TIM                                               8
                                                           ECM                                   8
       51.         |12V vehicle battery voltage            Vehicle charging system               11
                   too high                |                                             & Vehicle Mfr Info
                                            ‘              TIM                                   8
                                                           ECM                                   8
       §2          |Not used
        §3         Not used
           4*      |#1 filkter load not calculated         Engine air flowsensor                 6
                   for over 30 minutes                     Pressure transducer                   5
                                            ;              {TM                                   8
                                            |              ECM                                   8
       55*         {#2 filter load not calculated          Engine air flow sensor                6
                   for over 30 minutes      ;              Pressure transducer                   5
                                            ;              TIM                                   8
                                                :          ECM                                   8
      NOTE: Codes marked with an asterisk (*) will iuminate an instrument panel light.




     8—4                                                © 1991 Donaldson Company,Inc.                       2127791
                                                                                                                Sn

                                                              A—A


     ins
LE/PE/L

                                                              VEHICLE                                                                                                                                   §;
                                                              SYSTEM                                               Engine        Engine              Engine                                             t
                                                                   AIR                                            Air Cleaner    AirFlow           Turbocharger                                         I
                                                                                                                                 Sensor                                                                  §
                                                              rJ H                                           _                                                                                           g\
                                      Cleaner Intet                                                      —>                                                                                              &C
                                      Alr Solenolds                                                          ~~

                                                                                I                                                                                           Exhaust
                                                                                                                                                                            Back Pressure
                                                               1            1                                                                                                          BP
                                                               I            I            Pressure
                                                               [            \            Relle! .1
                                                               |                A\       Vaive
                                                                   k                 m en en ro n mm mdns          ueni t                                                                                3
                                                                       _________                                                                       n__..._.._]           l                           rg
    ‘ouj ‘Auedwen uospjevoeq L66t ®




                                                                                                                   e——————— Cleaner Inlet Valve ——————®                                                  %
                                                          [                           essm
                                                              /—_ ———————————————————————————— -l_
                                                                                                                                                w_w__
                                                          |                a~~                        cceoc Perforated PI@te =___oj» —————
                                                                                                                                                                                                         H


                                                                                                                                                                                                         x
                                                          {            (                                                 _ Ceramic Heat—reflecting Disc __                                               ®
                                                          Pod                                           [::Z]‘L                         Heater 24V                J                            _
                                                          1                                            Loo          s                                                   h—anpaonenntonr—
                                                          t            _A                     _                    &             <— Thermocouple —s
                                                                                                                                                  im                                         —L
                                      Blower Air                                                 >                       tC               Filter     1                                        s
                                      Sotenoids                                                                                 «4———              erin ___,
                                                          %_{_?)                                                         fos            Pressure                  AUH

                                      Motor                                                                                                 Filter                      >
                                      and Fan      ___,                                                                                   Element


                                                                                                                                        Filter Out
                                      Air Cieaner.                              —éfln                                     1O0D <=—— pressure ~——* C

                                                          AIR BLOWER                             41      CLEANER 2                                                               CLEANER 1         J'        &
                                                          ASSEMBLY                                                                                                                                           3
                                                          12/24V                             Tallpipe                                                                                        Talipipe        o
                                                                                                                                                                                                             €
                                                                                                             Engine Exhaust Cleaner
                                                                                                                                                                                                             s&


               as                     ©                                    ESW darld dukutit                       su uww




                                                                                         CRAFYT
                                                                           APPENDIX C




                        Composite Result Evaluation Method


                                                                                          ‘E » emission in grams
     | g                                                                                  P « power t bap—hr
      3
      S                                                                                   «: Cold Start
      88                                                                                         —
      «C
      a.                                                                                  h +: Hot Start
      &
      ad                                                                                  T: Regeneration


           a            r        @0                   s       40      5o       40   i
                         Ttansient Tests Completed
                                (oximple)

31 Bee <(piit)
       § 1       5
               + g(E6))                                                             .
;’                  :       j’                        6             w 24. Final Vaiue for a Eingle Trap
Ares 8( on — g0m)                                                          2
      Ej+ E3
        2                                                 E
                                  = ; =5~                          ® Final Composite Vaiue for Systom
      Pl + PZ                                             P
           2                                      |




                        ccmpoqsitu Rasult Ev-.luution HeChod
                                              |                      rigua:u


                                          i
                                          i



Document Created: 2005-09-01 12:41:10
Document Modified: 2005-09-01 12:41:10

| Previous E.O. D-248 | Next E.O. D-249-1 | Next E.O. D-250