EXHIBIT (4)f - -------------------------------------------------------------------------------- [CONFORMED COPY] PACIFICORP (AN OREGON CORPORATION) TO CHEMICAL BANK (A NEW YORK CORPORATION) AS TRUSTEE UNDER UTAH POWER & LIGHT COMPANY'S MORTGAGE AND DEED OF TRUST, DATED AS OF DECEMBER 1, 1943 ---------------------- FIFTY-SIXTH SUPPLEMENTAL INDENTURE DATED AS OF DECEMBER 1, 1995 SUPPLEMENTAL TO UTAH POWER & LIGHT COMPANY'S MORTGAGE AND DEED OF TRUST DATED AS OF DECEMBER 1, 1943 ---------------------- THIS INSTRUMENT GRANTS A SECURITY INTEREST BY A TRANSMITTING UTILITY THIS INSTRUMENT CONTAINS AFTER-ACQUIRED PROPERTY PROVISIONS - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- FIFTY-SIXTH SUPPLEMENTAL INDENTURE THIS INDENTURE, dated as of the 1st day of December, 1995 (hereinafter referred to as the "Fifty-sixth Supplemental Indenture") is made as a supplement to that certain Mortgage and Deed of Trust, dated as of December 1, 1943, as heretofore amended and supplemented (the "Mortgage"), executed and delivered by Utah Power & Light Company, a Maine corporation that subsequently merged into Utah Power & Light Company, a Utah corporation (hereinafter referred to respectively as the "Maine Company" and the "Utah Company"; and hereinafter referred to collectively as the "Original Mortgagor"). This Fifty-sixth Supplemental Indenture is entered into by and between PACIFICORP, a corporation of the State of Oregon into which the Original Mortgagor heretofore was merged, whose address is 700 NE Multnomah, Portland, Oregon 97232 (the "Company") and CHEMICAL BANK, a New York corporation whose address is 450 West 33rd Street, New York, New York 10001 (the "Corporate Trustee" or "Trustee"). WHEREAS, the Mortgage (including all indentures supplemental thereto) was recorded in the official records of the States of Colorado, Idaho, New Mexico, Utah and Wyoming and various counties within said states in which this Fifty-sixth Supplemental Indenture is to be recorded, and was filed as a financing statement in accordance with the Uniform Commercial Code of each of said states; and WHEREAS, the Maine Company executed, delivered, recorded and filed the First Supplemental Indenture through the Twenty-fifth Supplemental Indenture to the Mortgage, inclusive, and the Utah Company executed, delivered, recorded and filed subsequent Supplemental Indentures as follows: Dated as of ----------- First January 1, 1945 Second May 1, 1946 Third April 1, 1948 Fourth May 1, 1949 Fifth October 1, 1949 Sixth October 1, 1950 Seventh October 1, 1951 Eighth October 1, 1952 Ninth May 1, 1954 Tenth September 1, 1955 Eleventh October 1, 1957 Twelfth September 1, 1960 Thirteenth June 1, 1962 Dated as of ----------- Fourteenth April 1, 1963 Fifteenth August 1, 1964 Sixteenth March 1, 1968 Seventeenth December 1, 1969 Eighteenth April 1, 1970 Nineteenth March 1, 1971 Twentieth May 1, 1972 Twenty-first February 1, 1974 Twenty-second October 1, 1974 Twenty-third November 1, 1975 Twenty-fourth February 1, 1976 Twenty-fifth April 1, 1976 Twenty-sixth August 31, 1976 Twenty-seventh September 1, 1976 Twenty-eighth November 1, 1976 Twenty-ninth March 1, 1977 Thirtieth September 1, 1977 Thirty-first April 1, 1978 Thirty-second May 1, 1978 Thirty-third April 1, 1979 Thirty-fourth September 1, 1979 Thirty-fifth March 1, 1980 Thirty-sixth April 1, 1981 Thirty-seventh December 1, 1981 Thirty-eighth July 1, 1982 Thirty-ninth December 1, 1982 Fortieth September 1, 1984 Forty-first October 1, 1986 Forty-second December 1, 1986 Forty-third May 1, 1987 Forty-fourth June 1, 1987; and WHEREAS, the Maine Company and the Utah Company have heretofore issued, in accordance with the provisions of the Mortgage, bonds entitled and designated First Mortgage Bonds, of the First Series through the Forty-seventh Series, inclusive, none of which bonds are Outstanding as of the date hereof; and 2 WHEREAS, the Utah Company entered into a Reorganization Agreement and Plan of Merger dated August 12, 1987, as amended, pursuant to which, among other things, the Utah Company was merged into the Company as of January 9, 1989, upon such terms as fully to preserve and in no respect to impair the Lien or security of the Mortgage or any of the rights or powers of the trustees or the bondholders thereunder; and WHEREAS, pursuant to Article XVII of the Mortgage, the Company executed, delivered, recorded and filed its Forty-fifth Supplemental Indenture dated as of January 9, 1989, whereby the Company assumed and agreed to pay, duly and punctually, the principal of and interest on the bonds issued under the Mortgage, in accordance with the provisions of said bonds and coupons and the Mortgage, and agreed to perform and fulfill all the covenants and conditions of the Mortgage to be kept or performed by the Original Mortgagor, and whereby The Chase Manhattan Bank (National Association) was appointed Corporate Trustee in succession to Morgan Guaranty Trust Company of New York (formerly Guaranty Trust Company of New York), resigned, under the Mortgage, and C.J. Heinzelmann was appointed Co-Trustee in succession to W.A. Spooner, resigned, under the Mortgage; and WHEREAS, the Company executed, delivered, recorded and filed additional Supplemental Indentures to the Mortgage as follows: Dated as of ----------- Forty-sixth March 31, 1989 Forty-seventh December 29, 1989 Forty-eighth March 31, 1991; and WHEREAS, pursuant to said Forty-eighth Supplemental Indenture, Morgan Guaranty Trust Company of New York was appointed Corporate Trustee in succession to The Chase Manhattan Bank (National Association), resigned, under the Mortgage and C.J. Heinzelmann resigned as Co-Trustee under the mortgage and all the right, title and powers of the Co-Trustee devolved upon the Corporate Trustee and its successors alone until such time as a successor to the Co-Trustee shall be appointed; and WHEREAS, the Company executed, delivered, recorded and filed additional Supplemental Indentures to the Mortgage as follows: 3 Dated as of ----------- Forty-ninth December 31, 1991 Fiftieth March 15, 1992 Fifty-first July 31, 1992 Fifty-second March 15, 1993 Fifty-third November 1, 1993 Fifty-fourth June 1, 1994 Fifty-fifth August 1, 1994; and WHEREAS, pursuant to said Fifty-fifth Supplemental Indenture, Chemical Bank was appointed Corporate Trustee in succession to Morgan Guaranty Trust Company of New York, resigned, under the Mortgage; and WHEREAS, the Company has heretofore issued, in accordance with the provisions of the Mortgage, bonds entitled and designated First Mortgage Bonds, of the Series and in the principal amounts as follows: Aggregate Aggregate Principal Amount Principal Amount Series Due Date Issued Outstanding - ------ -------- ---------------- ---------------- 48. Forty-eighth--Medium- Term Notes, Series A various $125,000,000 $120,000,000 49. Forty-ninth--Medium- Term Notes, Series B various 100,000,000 80,000,000 50. Fiftieth--Medium-Term Notes, Series C various 150,000,000 140,937,357 51. Fifty-first--Medium- Term Notes, Series D various 125,000,000 125,000,000 52. Fifty-second--C-U various 125,216,000 92,644,000 53. Fifty-third--Medium- Term Notes, Series E various 250,000,000 250,000,000 54. Fifty-fourth--6 3/4% 4/1/2005 75,000,000 75,000,000 55. Fifty-fifth--Medium- Term Notes, Series F various 250,000,000 250,000,000 56. Fifty-sixth--E-L various 35,600,000 35,600,000 57. Fifty-seventh--Medium Term Notes, Series G various 250,000,000 250,000,000 58. Fifty-eighth, Series 1994-1 various 108,235,000 108,235,000; 4 and WHEREAS, Section 8 of the Mortgage provides that the form of each series of bonds (other than the First Series) issued thereunder and of the coupons to be attached to coupon bonds of such series shall be established by Resolution of the Board of Directors of the Company and that the form of such series, as established by said Board of Directors, shall specify the descriptive title of the bonds and various other terms thereof, and may also contain such provisions not inconsistent with the provisions of the Mortgage as the Board of Directors may, in its discretion, cause to be inserted therein expressing or referring to the terms and conditions upon which such bonds are to be issued and/or secured under the Mortgage; and WHEREAS, Section 130 of the Mortgage provides, among other things, that any power, privilege or right expressly or impliedly reserved to or in any way conferred upon the Company by any provision of the Mortgage, whether such power, privilege or right is in any way restricted or is unrestricted, may be in whole or in part waived or surrendered or subjected to any restriction if at the time unrestricted or to additional restriction if already restricted, and the Company may enter into any further covenants, limitations or restrictions for the benefit of any one or more series of bonds issued thereunder and provide that a breach thereof shall be equivalent to a default under the Mortgage, or the Company may cure any ambiguity contained therein or in any supplemental indenture or may establish the terms and provisions of any series of bonds other than the First Series, by an instrument in writing executed and acknowledged by the Company in such manner as would be necessary to entitle a conveyance of real estate to record in all of the states in which any property at the time subject to the Lien of the Mortgage shall be situated; and the Trustee is further authorized by said Section 130 to join with the Company in the execution of any such instrument or instruments, and such instrument, executed and acknowledged as aforesaid, shall be delivered to the Trustee and thereupon any modification of the provisions of the Mortgage therein set forth, authorized by said Section 130, shall be binding upon the parties to the Mortgage, their successors and assigns, and the holders of the bonds and coupons thereby secured; provided, however; anything therein contained to the contrary notwithstanding, said Section 130 shall not be construed to permit any act, waiver; surrender or restriction adversely affecting any bonds then Outstanding under the Mortgage; and WHEREAS, in Section 42 of the Mortgage, the Original Mortgagor covenanted that it would execute and deliver such supplemental indenture or indentures and such further instruments and do such further acts as might be necessary or proper to carry out more effectually the purposes of the Mortgage and to make subject to the Lien of the Mortgage any property thereafter acquired, made or constructed and intended to be subject 5 to the Lien thereof, and to transfer to any new trustee or trustees or co-trustee or co-trustees, the estates, powers, instruments or funds held in trust thereunder; and WHEREAS, the Company now desires to create three new series of bonds and (pursuant to Section 130 of the Mortgage) to add to its covenants and agreements contained in the Mortgage certain other covenants and agreements to be observed by it; and WHEREAS, the execution and delivery by the Company of this Fifty-sixth Supplemental Indenture has been duly authorized by the Board of Directors by appropriate Resolutions; NOW, THEREFORE, THIS INDENTURE WITNESSETH: ARTICLE I GRANTING CLAUSES The Company, in consideration of the premises and of One Dollar ($1) to it duly paid by the Trustee at or before the ensealing and delivery of these presents, the receipt whereof is hereby acknowledged, and in further evidence of assurance of the estate, title and rights of the Trustee under the Mortgage and in order further to secure the payment of both the principal of and interest and premium, if any, on the bonds from time to time issued under the Mortgage, according to their tenor and effect, and the performance of all the provisions of the Mortgage (including any instruments supplemental thereto and any modification made as in the Mortgage provided) and of such bonds, and to confirm the Lien of the Mortgage on certain after-acquired property, hereby grants, bargains, sells, releases, conveys, assigns, transfers, mortgages, pledges, sets over and confirms (subject, however, to Excepted Encumbrances as defined in Section 6 of the Mortgage) unto Chemical Bank as Trustee under the Mortgage, and to its successor or successors in said trust, and to said Trustee and its successors and assigns forever, all property, real, personal and mixed, owned by the Original Mortgagor as of the date of the Mortgage and acquired by the Original Mortgagor or the Company after the date of the Mortgage, subject to the provisions of Section 97 of the Mortgage and Section 2.02 of the Forty-fifth Supplemental Indenture thereto, of the kind or nature specifically mentioned in Paragraphs One through Twelve, inclusive, of the Mortgage, or of any other kind or nature (except any herein or in the Mortgage expressly excepted), now owned, or, subject to the provisions of Section 97 of the Mortgage and Section 2.02 of the Forty-fifth Supplemental Indenture thereto, hereafter acquired by the Company (by purchase, consolidation, merger, donation, construction, erection or in any other way) and wheresoever situated, including (without in anywise limiting or impairing by the enumeration of the same the scope and intent of the foregoing) all lands, power sites, flowage rights, water rights, water locations, water appropriations, ditches, flumes, reservoirs, reservoir sites, canals, raceways, dams, dam sites, aqueducts, and all other rights or means for appropriating, conveying, storing and 6 supplying water; all rights of way and roads; all plants for the generation of electricity by steam, water and/or other power; all power houses, gas plants, street lighting systems, standards and other equipment incidental thereto, telephone, radio and television systems, air conditioning systems and equipment incidental thereto, water works, water systems, steam heat and hot water plants, substations, lines, service and supply systems, bridges, culverts, tracks, street and interurban railway systems, offices, buildings and other structures and equipment thereof; all machinery, engines, boilers, dynamos, electric, gas and other machines, regulators, meters, transformers, generators, motors, electrical, gas and mechanical appliances, conduits, cables, water, steam heat, gas or other pipes, mains and pipes, service pipes, fittings, valves and connections, pole and transmission lines, wires, cables, tools, implements, apparatus, furniture, chattels and chooses in action; all municipal and other franchises, consents or permits; all lines for the transmission and distribution of electric current, gas, steam heat or water for any purpose, including towers, poles, wires, cables, pipes, conduits, ducts and all apparatus for use in connection therewith; all real estate, lands, easements, servitudes, licenses, permits, franchises, privileges, rights of way and other rights in or relating to real estate or the occupancy of the same and (except as herein or in the Mortgage expressly excepted) all the right, title and interest of the Company in and to all other property of like kind and character as herein described or of any other kind or character appertaining to and/or used and/or occupied and/or enjoyed in connection with any property herein or in the Mortgage described; And the Company does hereby confirm that the Company will not cause or consent to a partition, either voluntarily or through legal proceedings, of property subject to the Lien of the Mortgage whether herein described or heretofore or hereafter acquired, in which its ownership shall be as a tenant in common, except as permitted by and in conformity with the provisions of the Mortgage and particularly of Article XII thereof; TOGETHER WITH all and singular the tenements, hereditaments and appurtenances belonging or in anywise appertaining to the aforesaid property or any part thereof, with the reversion and reversions, remainder and remainders and (subject to the provisions of Section 67 of the Mortgage) the tolls, rents, revenues, issues, earnings, income, product and profits thereof, and all the estate, right, title and interest and claim whatsoever, at law as well as in equity, which the Company now has or (subject to the provisions of Section 97 of the Mortgage and Section 2.02 of the Forty-fifth Supplemental Indenture thereto) may hereafter acquire in and to the aforesaid property and franchises and every part and parcel thereof. IT IS HEREBY AGREED by the Company that, subject to the provisions of Section 97 of the Mortgage and Section 2.02 of the Forty-fifth Supplemental Indenture thereto, all the property, rights and franchises acquired by the Company (by purchase, consolidation, merger, donation, construction, erection or in any other way) after the date hereof, except any herein or in the Mortgage expressly excepted, shall be and are as fully granted and conveyed hereby and by the Mortgage, and as fully embraced within the Lien 7 of the Mortgage as if such property, rights and franchises were now owned by the Company and were specifically described herein or in the Mortgage and conveyed hereby or thereby; PROVIDED THAT the following are not and are not intended to be now or hereafter granted, bargained, sold, released, conveyed, assigned, transferred, mortgaged, pledged, set over or confirmed hereunder and are expressly excepted from the Lien and operation of the Mortgage, viz.: (1) cash, shares of stock, bonds, notes and other obligations and other securities not hereafter specifically pledged, paid, deposited, delivered or held under the Mortgage or covenanted so to be; (2) merchandise, equipment, materials or supplies held for the purpose of sale or other disposition in the usual course of business and fuel, oil and similar materials and supplies consumable in the operation of any of the properties of the Company; electric trolley coaches, rolling stock, buses, motor coaches, automobiles and other vehicles; (3) bills, notes and accounts receivable, and all contracts, leases and operating agreements not specifically pledged under the Mortgage or covenanted so to be; the last day of the term of any lease or leasehold which may be or become subject to the Lien of the Mortgage; (4) electric energy, gas and other materials or products generated, manufactured, produced or purchased by the Company for sale, distribution or use in the ordinary course of its business; and (5) the Company's franchise to be a corporation; provided, however, that the property and rights expressly excepted from the Lien and operation of the Mortgage in the above subdivisions (2) and (3) shall (to the extent permitted by law) cease to be so excepted in the event and as of the date that the Trustee or a receiver or trustee shall enter upon and take possession of the Mortgaged and Pledged Property in the manner provided in Article XIV of the Mortgage by reason of the occurrence of a Default as defined in Section 75 thereof. TO HAVE AND TO HOLD all such properties, real, personal and mixed, granted, bargained, sold, released, conveyed, assigned, transferred, mortgaged, pledged, set over or confirmed by the Company as aforesaid, or intended so to be, unto Chemical Bank as Trustee, and its successors and assigns forever; IN TRUST NEVERTHELESS, for the same purposes and upon the same terms, trusts and conditions and subject to and with the same provisos and covenants as are set forth in the Mortgage, this Fifty-sixth Supplemental Indenture being supplemental to the Mortgage. AND IT IS HEREBY COVENANTED by the Company that all the terms, conditions, provisos, covenants and provisions contained in the Mortgage shall affect and apply to the property hereinbefore described and conveyed, and to the estates, rights, obligations and duties of the Company and the Trustee under the Mortgage and the beneficiaries of the trust with respect to said property, and to the Trustee under the Mortgage and its successors in the trust, in the same manner and with the same effect as if the said property had been owned by the Company at the time of the execution of the 8 Mortgage, and had been specifically and at length described in and conveyed to said Trustee by the Mortgage as a part of the property therein stated to be conveyed. ARTICLE II FIFTY-NINTH SERIES OF BONDS SECTION 2.01. There shall be a series of bonds designated "First Mortgage Bonds, Adjustable Rate Replacement Series" (herein sometimes referred to as the "Fifty-ninth Series"), each of which shall also bear the descriptive title First Mortgage Bond, and the form thereof, which shall be established by Resolution of the Board of Directors of the Company, shall contain suitable provisions with respect to the matters hereinafter in this Section specified. Bonds of the Fifty-ninth Series shall mature on the maturity date, and in principal amounts corresponding to the principal amounts, of first mortgage and collateral trust bonds designated "Adjustable Rate Replacement Series," issued under the Company's Mortgage and Deed of Trust, dated as of January 9, 1989, as amended and supplemented, to Chemical Bank, as trustee, on the basis of such bonds of the Fifty-ninth Series. Bonds of the Fifty-ninth Series shall be issued as fully registered bonds in the denomination of One Thousand Dollars and, at the option of the Company, in any multiple or multiples of One Thousand Dollars (the exercise of such option to be evidenced by the execution and delivery thereof); they shall bear no interest; and the principal of each such bond shall be payable at the office or agency of the Company in the Borough of Manhattan, The City of New York, in such coin or currency of the United States of America as at the time of payment is legal tender for public and private debts. Bonds of the Fifty-ninth Series shall be dated as in Section 10 of the Mortgage provided. (I) Bonds of the Fifty-ninth Series shall be redeemable either at the option of the Company or pursuant to the requirements of the Mortgage (including, among other things, the provisions of Sections 39 or 74 of the Mortgage or with the proceeds of released property pursuant to Section 71 of the Mortgage). (II) At the option of the registered owner, any bonds of the Fifty- ninth Series, upon surrender thereof for cancellation at the office or agency of the Company in the Borough of Manhattan, The City of New York, together with a written instrument of transfer whenever required by the Company duly executed by the registered owner or by his duly authorized attorney shall (subject to the provisions of Section 12 of the Mortgage) be exchangeable for a like aggregate principal amount of bonds of the same series of other authorized denominations. Bonds of the Fifty-ninth Series shall be transferable (subject to the provisions of Section 12 of the Mortgage and to the limitations set forth in this Fifty-sixth Supplemental Indenture), upon the surrender thereof for cancellation, together with a written instrument of transfer in form approved by the registrar duly executed by the 9 registered owner or by his duly authorized attorney, at the office or agency of the Company in the Borough of Manhattan, The City of New York. Upon any transfer or exchange of bonds of the Fifty-ninth Series, the Company may make a charge therefor sufficient to reimburse it for any tax or taxes or other governmental charge, as provided in Section 12 of the Mortgage, but the Company hereby waives any right to make a charge in addition thereto for any exchange or transfer of bonds of the Fifty-ninth Series. The Trustee may conclusively presume that the obligation of the Company to pay the principal of the bonds of the Fifty-ninth Series as the same shall become due and payable shall have been fully satisfied and discharged unless and until it shall have received a written notice from the trustee under the Company's Mortgage and Deed of Trust, dated as of January 9, 1989, as amended and supplemented, to Chemical Bank, as trustee, signed by the President, a Vice President, an Assistant Vice President or a Trust Officer of such trustee, stating that interest or principal due and payable on any bonds issued under said Mortgage and Deed of Trust has not been fully paid and specifying the amount of funds required to make such payment. Bonds of the Fifty-ninth Series shall be initially issued in the name of Chemical Bank, as trustee under the Company's Mortgage and Deed of Trust, dated as of January 9, 1989, as amended and supplemented, and shall not be transferable, except to any successor trustee under said Mortgage and Deed of Trust. After the execution and delivery of this Fifty-sixth Supplemental Indenture and upon compliance with the applicable provisions of the Mortgage, as supplemented, it is contemplated that there shall be issued bonds of the Fifty-ninth Series in an aggregate principal amount not to exceed Six Million Six Hundred Seventeen Thousand Dollars ($6,617,000). ARTICLE III SIXTIETH SERIES OF BONDS SECTION 3.01. There shall be a series of bonds designated "First Mortgage Bonds, 9 3/8% Replacement Series Due 1997" (herein sometimes referred to as the "Sixtieth Series"), each of which shall also bear the descriptive title First Mortgage Bond, and the form thereof, which shall be established by Resolution of the Board of Directors of the Company, shall contain suitable provisions with respect to the matters hereinafter in this Section specified. Bonds of the Sixtieth Series shall mature on the maturity date, and in principal amounts corresponding to the principal amounts, of first mortgage and collateral trust bonds designated "9 3/8% Replacement Series Due 1997," issued under the Company's Mortgage and Deed of Trust, dated as of January 9, 1989, as amended and supplemented, to Chemical Bank, as trustee, on the basis of such bonds of the Sixtieth Series. Bonds of the Sixtieth Series shall be issued as fully registered bonds in the 10 denomination of One Thousand Dollars and, at the option of the Company, in any multiple or multiples of One Thousand Dollars (the exercise of such option to be evidenced by the execution and delivery thereof); they shall bear no interest; and the principal of each such bond shall be payable at the office or agency of the Company in the Borough of Manhattan, The City of New York, in such coin or currency of the United States of America as at the time of payment is legal tender for public and private debts. Bonds of the Sixtieth Series shall be dated as in Section 10 of the Mortgage provided. (I) Bonds of the Sixtieth Series shall be redeemable either at the option of the Company or pursuant to the requirements of the Mortgage (including, among other things, the provisions of Sections 39 or 74 of the Mortgage or with the proceeds of released property pursuant to Section 71 of the Mortgage). (II) At the option of the registered owner, any bonds of the Sixtieth Series, upon surrender thereof for cancellation at the office or agency of the Company in the Borough of Manhattan, The City of New York, together with a written instrument of transfer whenever required by the Company duly executed by the registered owner or by his duly authorized attorney shall (subject to the provisions of Section 12 of the Mortgage) be exchangeable for a like aggregate principal amount of bonds of the same series of other authorized denominations. Bonds of the Sixtieth Series shall be transferable (subject to the provisions of Section 12 of the Mortgage and to the limitations set forth in this Fifty-sixth Supplemental Indenture), upon the surrender thereof for cancellation, together with a written instrument of transfer in form approved by the registrar duly executed by the registered owner or by his duly authorized attorney, at the office or agency of the Company in the Borough of Manhattan, The City of New York. Upon any transfer or exchange of bonds of the Sixtieth Series, the Company may make a charge therefor sufficient to reimburse it for any tax or taxes or other governmental charge, as provided in Section 12 of the Mortgage, but the Company hereby waives any right to make a charge in addition thereto for any exchange or transfer of bonds of the Sixtieth Series. The Trustee may conclusively presume that the obligation of the Company to pay the principal of the bonds of the Sixtieth Series as the same shall become due and payable shall have been fully satisfied and discharged unless and until it shall have received a written notice from the trustee under the Company's Mortgage and Deed of Trust, dated as of January 9, 1989, as amended and supplemented, to Chemical Bank, as trustee, signed by the President, a Vice President, an Assistant Vice President or a Trust Officer of such trustee, stating that interest or principal due and payable on any bonds issued under said Mortgage and Deed of Trust has not been fully paid and specifying the amount of funds required to make such payment. 11 Bonds of the Sixtieth Series shall be initially issued in the name of Chemical Bank, as trustee under the Company's Mortgage and Deed of Trust, dated as of January 9, 1989, as amended and supplemented, and shall not be transferable, except to any successor trustee under said Mortgage and Deed of Trust. After the execution and delivery of this Fifty-sixth Supplemental Indenture and upon compliance with the applicable provisions of the Mortgage, as supplemented, it is contemplated that there shall be issued bonds of the Sixtieth Series in an aggregate principal amount not to exceed Twenty- Five Million Dollars ($25,000,000). ARTICLE IV SIXTY-FIRST SERIES OF BONDS SECTION 4.01. There shall be a series of bonds designated "First Mortgage Bonds, Bond Credit Series Bonds" (herein sometimes referred to as the "Sixty-first Series"), each of which shall also bear the descriptive title First Mortgage Bond, and the form thereof, which shall be established by Resolution of the Board of Directors of the Company, shall contain suitable provisions with respect to the matters hereinafter in this Section specified. Bonds of the Sixty-first Series shall mature on the maturity date, and in principal amounts corresponding to the principal amounts, of first mortgage and collateral trust bonds designated "Bond Credit Series Bonds," issued under the Company's Mortgage and Deed of Trust, dated as of January 9, 1989, as amended and supplemented, to Chemical Bank, as trustee, on the basis of such bonds of the Sixty-first Series. Bonds of the Sixty-first Series shall be issued as fully registered bonds in the denomination of One Thousand Dollars and, at the option of the Company, in any multiple or multiples of One Thousand Dollars (the exercise of such option to be evidenced by the execution and delivery thereof); they shall bear no interest; and the principal of each such bond shall be payable at the office or agency of the Company in the Borough of Manhattan, The City of New York, in such coin or currency of the United States of America as at the time of payment is legal tender for public and private debts. Bonds of the Sixty-first Series shall be dated as in Section 10 of the Mortgage provided. (I) Bonds of the Sixty-first Series shall be redeemable either at the option of the Company or pursuant to the requirements of the Mortgage (including, among other things, the provisions of Sections 39 or 74 of the Mortgage or with the proceeds of released property pursuant to Section 71 of the Mortgage). (II) At the option of the registered owner, any bonds of the Sixty- first Series, upon surrender thereof for cancellation at the office or agency of the Company in the Borough of Manhattan, The City of New York, together with a written instrument of transfer whenever required by the Company duly executed by the registered owner or by his duly authorized attorney shall (subject to the provisions of Section 12 of the Mortgage) be 12 exchangeable for a like aggregate principal amount of bonds of the same series of other authorized denominations. Bonds of the Sixty-first Series shall be transferable (subject to the provisions of Section 12 of the Mortgage and to the limitations set forth in this Fifty-sixth Supplemental Indenture), upon the surrender thereof for cancellation, together with a written instrument of transfer in form approved by the registrar duly executed by the registered owner or by his duly authorized attorney, at the office or agency of the Company in the Borough of Manhattan, The City of New York. Upon any transfer or exchange of bonds of the Sixty-first Series, the Company may make a charge therefor sufficient to reimburse it for any tax or taxes or other governmental charge, as provided in Section 12 of the Mortgage, but the Company hereby waives any right to make a charge in addition thereto for any exchange or transfer of bonds of the Sixty-first Series. The Trustee may conclusively presume that the obligation of the Company to pay the principal of the bonds of the Sixty-first Series as the same shall become due and payable shall have been fully satisfied and discharged unless and until it shall have received a written notice from the trustee under the Company's Mortgage and Deed of Trust, dated as of January 9, 1989, as amended and supplemented, to Chemical Bank, as trustee, signed by the President, a Vice President, an Assistant Vice President or a Trust Officer of such trustee, stating that interest or principal due and payable on any bonds issued under said Mortgage and Deed of Trust has not been fully paid and specifying the amount of funds required to make such payment. Bonds of the Sixty-first Series shall be initially issued in the name of Chemical Bank, as trustee under the Company's Mortgage and Deed of Trust, dated as of January 9, 1989, as amended and supplemented, and shall not be transferable, except to any successor trustee under said Mortgage and Deed of Trust. After the execution and delivery of this Fifty-sixth Supplemental Indenture and upon compliance with the applicable provisions of the Mortgage, as supplemented, it is contemplated that there shall be issued bonds of the Sixty-first Series in an aggregate principal amount not to exceed Three Hundred Eighty-Three Million Three Hundred Sixteen Thousand Two Hundred and Fourteen Dollars ($383,316,214). ARTICLE V THE COMPANY RESERVES THE RIGHT TO AMEND PROVISIONS REGARDING PROPERTIES EXCEPTED FROM LIEN OF MORTGAGE SECTION 5.01. The Company reserves the right, without any consent or other action by holders of bonds of the Fifty-fourth Series, or any other series of bonds subsequently created under the Mortgage (including the bonds of the Fifty-ninth Series, the 13 Sixtieth Series and the Sixty-first Series) to make such amendments to the Mortgage, as heretofore amended and supplemented, as shall be necessary in order to amend the first proviso to the granting clause of the Mortgage, which proviso sets forth the properties excepted from the Lien of the Mortgage, to add a new exception (6) which shall read as follows: "(6) allowances allocated to steam-electric generating plants owned by the Company or in which the Company has interests, pursuant to Title IV of the Clean Air Act Amendments of 1990, Pub. L. 101-549, Nov. 15, 1990, 104 Stat. 2399, 42 USC 7651, ET SEQ., as now in effect or as hereafter supplemented or amended." ARTICLE VI MISCELLANEOUS PROVISIONS SECTION 6.01. The right, if any, of the Company to assert the defense of usury against a holder or holders of bonds of the Fifty-ninth Series, the Sixtieth Series, the Sixty-first Series or any subsequent series shall be determined only under the laws of the State of New York. SECTION 6.02. The terms defined in the Mortgage shall, for all purposes of this Fifty-sixth Supplemental Indenture, have the meanings specified in the Mortgage. SECTION 6.03. The Trustee hereby accepts the trusts declared, provided, created or supplemented in the Mortgage and herein, and agrees to perform the same upon the terms and conditions set forth herein and in the Mortgage, and upon the following terms and conditions: The Trustee shall not be responsible in any manner whatsoever for or in respect of the validity or sufficiency of this Fifty-sixth Supplemental Indenture or for or in respect of the recitals contained herein, all of which recitals are made by the Company solely. In general, each and every term and condition contained in Article XVIII of the Mortgage shall apply to and form part of this Fifty-sixth Supplemental Indenture with the same force and effect as if the same were herein set forth in full, with such omissions, variations and insertions, if any, as may be appropriate to make the same conform to the provisions of the Fifty-sixth Supplemental Indenture. SECTION 6.04. Whenever in this Fifty-sixth Supplemental Indenture either the Company or the Trustee is named or referred to, this shall, subject to the provisions of Articles XVII and XVIII of the Mortgage, be deemed to include the successors and assigns of such party, and all the covenants and agreements in this Fifty-sixth Supplemental 14 Indenture contained by or on behalf of the Company, or by or on behalf of the Trustee, or either of them, shall, subject as aforesaid, bind and inure to the respective benefits of the respective successors and assigns of such parties, whether so expressed or not. SECTION 6.05. Nothing in this Fifty-sixth Supplemental Indenture, expressed or implied, is intended, or shall be construed, to confer upon, or to give to any person, firm or corporation, other than the parties hereto and the holders of the bonds and coupons Outstanding under the Mortgage, any right, remedy or claim under or by reason of this Fifty-sixth Supplemental Indenture or any covenant, condition, stipulation, promise or agreement hereof, and all the covenants, conditions, stipulations, promises and agreements in this Fifty-sixth Supplemental Indenture contained by or on behalf of the Company shall be for the sole and exclusive benefit of the parties hereto, and of the holders of the bonds and coupons Outstanding under the Mortgage. SECTION 6.06. This Fifty-sixth Supplemental Indenture shall be executed in several counterparts, each of which shall be an original and all of which shall constitute but one and the same instrument. 15 IN WITNESS WHEREOF, PACIFICORP has caused its corporate name to be hereunto affixed, and this instrument to be signed and sealed by one of its Vice Presidents, and its corporate seal to be attested to by its Secretary or one of its Assistant Secretaries; and Chemical Bank has caused its corporate name to be hereunto affixed, and this instrument to be signed and sealed by one of its Vice Presidents or one of its Assistant Vice Presidents, and its corporate seal to be attested to by one of its Senior Trust Officers, all as of the day and year first above written. [SEAL] PACIFICORP By s/s R. F. LANZ ------------------------------- Vice President Attest: s/s LENORE M. MARTIN - ------------------------------- Assistant Secretary CHEMICAL BANK as Corporate Trustee By s/s F. J. GRIPPO ------------------------------- Vice President Attest: s/s GLENN G. MCKEEVER - ------------------------------- Senior Trust Officer 16 STATE OF OREGON ) ) ss.: COUNTY OF MULTNOMAH ) On this 7th day of December, 1995, before me, Sheryl L. Stratton, a Notary Public in and for the State of Oregon, personally appeared Robert F. Lanz and Lenore M. Martin, known to me to be a Vice President and an Assistant Secretary, respectively, of PACIFICORP, an Oregon corporation, who being duly sworn, stated that the seal affixed to the foregoing instrument is the corporate seal of said corporation and acknowledged this instrument to be the free, voluntary and in all respects duly and properly authorized act and deed of said corporation. IN WITNESS WHEREOF, I have hereunto set my hand and official seal the day and year first above written. s/s SHERYL L. STRATTON ------------------------------------- My commission expires: 5/25/96 [SEAL] Residing at: Portland, Oregon STATE OF NEW YORK ) ) ss: COUNTY OF NEW YORK ) On this 13th day of December, 1995, before me, Annabelle DeLuca, a Notary Public in and for the State of New York, personally appeared F. J. Grippo and Glenn G. McKeever, known to me to be a Vice President and a Senior Trust Officer, respectively, of CHEMICAL BANK, A NEW YORK CORPORATION, who being duly sworn, stated that the seal affixed to the foregoing instrument is the corporate seal of said corporation and acknowledged this instrument to be the free, voluntary and in all respects duly and properly authorized act and deed of said corporation. IN WITNESS WHEREOF, I have hereunto set my hand and official seal the day and year first above written. s/s ANNABELLE DELUCA ------------------------------------- Notary Public, State of New York No. O1DE5013759 Qualified in Kings County [SEAL] Commission expires: July 15, 1997 17