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HomeMy WebLinkAboutAPA4138Susitna Hydroelectric Project FUTILE QUEST FOR A PlAN OF FINANCE IN ALASKA two contemporary large· scale engineering projects are noteworthy. One is the development of North Slope oil resources, including construction of the trans-Alaska pipeline. This impressive achievement is the work of private com· panies and private capital. A second impor· tant contemporary megaproject in Alaska is one planned by a public agency of the state-the Susitna hydroelectric project. Planning activity on this project was re· cently suspended, and the current prospect for its revival is not good. Despite the un· happy fate of this project (or perhaps be· cause of it), the Susitna project is an interesting case study of public sector planning for a major infrastructure de· velopment project. This article considers only the finan· cia/ aspect of the Susitna project. As it happens, this is the critical dimension, because the failure to devise a workabht and acceptable financing plan led to the project's demise. In this paper I will review the history of financial planning for the project from 1982 (date of completion of the feasibility study) through March of 1986, when the project was put on the shelf. The objectives of this review are to explain why a workable plan of finance was so elusive and, more important, to seek insights from the history of the Susitna project that may benefit future planning for major energy projects. PROJECT DESCRIPTION The Susitna hydroelectric project was to include two dams along the Susitna Ri~ in the Talkeetna Mountains of -mcentrul Alaska. When completed, the by Gordon S. Harrison project would have a combined installed capacity of 1620 megawatts and an aver· age annual energy yield estimated at 6200 gigawatt-hours. The Watana Dam, intended for oper· ation in 1996, was to be a rock structure 885 feet high and 4100 feet long, capable of generating 1020 megawatts. At this height, Watana would be the fifth highest embankment dam in the world, and the highest in North America, exceeding the Mica Creek embankment dam in British Columbia (794 feet) and the Oroville Dam in California (771 feet). The Watana reser- voir would extend upstream 48 miles; it would be 1 to 5 miles wide, and it would have a maximum dePth of 680 feet. The Devil Canyon Dam, located 32 miles downstream from Wauna, was scheduled to be operating by 2002. It was to be a double-curved concrete arch 645 feet high and 1500 feet long, capable of generating 600 megawatts. The dam's height would include it among the nine tallest arch dams in the world, including the Hoover Dam in Arizona (725 feet) and lnguiri in the Soviet Union (892 feet). The reservoir for Devil Canyon would be 26 miles long, ~ mile wide at its widest point, and have a maximum depth of 550 feet. ALASKA POWER AUTHORITY In the United States, major public sector infrastructure projects are typically built, owned, and operated by quasi· independent public corporations. So it is in Alaska, where the Susitna project is under the jurisdiction of the Alaska Power Authority (APA). The APA is a public corporation governed by a board of direc· tors appointed by the governor of Alaska. It has its own professional staff but relies heavily on consulting firms to provide engineering and other technical expertise. APPROACHES TO STATE SUBSIDIZATION Large infrastructure projects that are developed by public corporations usually rely on the sale of revenue bonds for financing. Revenue bonds are debt issues (the interest on which is usually exempt from state and federal taxation) sold in the national capital markets that are secured by income generated by the proj· ect (road tolls. electricity sales, gate receipts, and other fees charged to users of the project). However, Susitna was such a large, expensive project that it could not be fi· nanced exclusively by conventional reve· nue bonds. Payment of interest and principal on revenue bonds sold to cover all project costs would result in an exorbi· tant price for electricity in the early years of the project. Therefore, it was always assumed that the State of Alaska would need to subsidize the project.' Two forms of state subsidy for Susitna were proposed during the course of project planning. One was referred to as state "equitY" investment in the project. In this case, state appropriations would be used to pay some or all construction costs. and thereby reduce or eliminate altogether the requirement for borrowing. The second form of state subsidy was referred to as "rate stabilization." In this case, state aP· propriations would be used to help make Gordon s. Harrison w• associate dirw:tor of the Ala~ Office of Milf1II(JIImtmt and Budf}llt, MJd a dif11Ctor of the A181ka PoW'tlr Authority from 1983 to 1986. This (}8{Hr was (},...nttld to the confllfflf)ctl on GloNIInfrastructur-. Proiectf, Alaska Pacific UniVM"· sity, Anchorage, July B. 1986. sponsored by thelntemtJtional Ftlderation of lnstitum of Advilf1Ctld Study. 22 The Northern Enol-. Vol. 18, No.2 end 3 ~nts of principal and interest on revenue bonds. Thus, state subsidy would be used to service debt rather than reduce the overall amount of debt. State subsidy to the project in the form of loans was among the financing mechanisms considered by project plan· ners. but loan alternatives were never fully developed and incorporated into financing plans for Susitna. The two main financing concepts of equity and rate stabilization can be illus· trated graphically. Line AE in Figure 1 represents the real wholesale price of electricity from a large, hypothetical hy· droelectric project that is financed entirely by debt. This line gradually slopes down- ward to point E because hydro projects are typically built to accommodate load growth (resulting in lower unit costs). and because of the eHect of inflation on level nominal debt service. At point E. the initial debt is retired and the price of power thereafter is based on operation and main- tenance costs. 2 line 80 in Figure 1 represents the pro- jection of wholesale electricity prices that would prevail without the hydro project. In the case of Susitna, this line represents the wholesale price of power in the Rail belt from gas-and coal-fired thermal plants. This projection assumes real price increases due to rising fossil· fuel prices and other costs of operations. Line BF in Rgura 1 represents the whole- sale price of electricity 'trom the hydro project with a combination of revenue bonds and state equity. In this case. the size of the state's equity investment reduces the amount of debt to that level which produces an entry price of power from the hydro project equal to the price of power from the thermal alternative (point 8). In- creasingly larger equity investment in the project would further reduce the price of hydropower. If the project were entirely financed bY cash grants from the sUte- 100 percent equity financing-the whole- sale cost of power would not have a debt service component, and it would represent the variable costs of operation and main- tenance only (this scenario is not shown in Figure 1 ). Figure 2 illustrates how rata stabiliza- tion works. Here, state contributions to the project do not reduce the amount of debt; rather, they reduce the price of hydropower (line AC) to the level of the thermal alternative (line BC) until the two are the same (at point C). Customers will pay for electricity along the line BC, with the state making up the difference through Tha Northern Envl.-r. Vol. 111, No.2 and 3 EQUITY FINANClNG Coot P"kwh .... 8 Hydro ..;u, .,boidy 0 ._ ____________________________ __ v .... FJvuN 1. Providirlt ~taU .,t.idy in ttt. fonn of M~Uitv .-.duces ttt. rwquit"Mt..,t for dM!t flnancint. In tfli1 fltunt, ttt. tlhacMd -rwprwtenU the amount of M~Uity nMCMd to mMa ttM w+MI.._,. price of hyciropoo!Mr equal tO tfla wflolatale price of pow..-from rlMo tharmal .mrn.tt-. RATE STABIUZAnON 0~----------------------------v .... Fitur• 2. Prowidint Jt81e .,t.icfy throutfl nrta mobillutlon requira utilitie to pay for hydropow., akmt ttM ~ cu.-.. of ttM ~I altarnatiYa until tfw crowo....-point C It raachad. Thil flnanclnt ...,.,_,. il mont datirabla tMn tha aqutty approach from tha lltfla'l poim of vi.ew. rate stabilization. At the cross<Wer point C. hydropower becomes cheaper than the alternative, and no further subsidy is re- quired (customers then pay along the line CE). An underlying assumption of this ap- pra.ch is that customers will not be willing to pay more than they would otherwise pay for eltctricity, notwithstanding future saYings that the project will create. It is wident from the rel.tive size of the sh.ded area in these two frgures that less rtate subsidy is involved with rate stabilization than with the equity ap- proach (on the basis of the general assump- tions underlying these curves). AJso, it is no doubt evident that utility customers would prefer to pay along the line BF in Figure 1 than BCE in FiQtJre 2. REAL AND NOMINAL DOLLARS Because of the long time involved in debt repayment, It is MCessary to account for the effects of inflation when analyzing the cost of any major project. Thus, fi- 23 nanca planners and economists distinguish between real (or connant) dollars, which exclude inflation. and nominal dollars, which include the effects of inflation. In those terms, the cost of the Susitna project was estimated to be about $5 billion at prices prevailing in 1985 (real dollars), but more than $12 bi Ilion at the prices ,xe- vailing when the expenditures Ktually would be made (nominal dollars). REVIEW OF FINANCE PLANNING A review of finance planning for the Susitna project is best approached chrono· logically, beginning in 1982 when a major feasibility study was completed. 1982 In 1982 a feasibility study of the proj- ect was completed and three financing options proposed. During this time, how· ever, the long-term oil price outlook was deteriorating. Acrn Am¥icM1 report. In March 1982, the firm Acres American released a major feasibility study of the Susitna project. The firm had been under contract to the APA since late 1979. The Acres American report proposed the two-stage construe· tion schedule described above under "Project Description." This project con· figuration and the supporting analysis became the basis for APA's license appli· cation to the Federal Enervy Regulatory Commission (FERC). With regard to financing, the Acres American report proposed three options: (1) 100 percent state appropriation of the total cost of construction, estimated to be $5.1 billion in 1982 dollars; (2) a state appropriation of $3 billion (1982 dollars), with the remaining project cost financed Table 1. Fin.nce Plans for the Susitrna Project with revenue bonds; or (3) a minimwm state appropriation of $2.3 billion ( 1982 dollars) with the remaining project cost financed with revenue bonds. (The Acres Americ.1n and ott-oer major financing proposals an1 summarized in Table 1.) It is noteworthy that one of the financing options was a cash grant from the state for the full cost of the project. At this time, it was widely presumed that Alaska's statewide hydroelectric development pro- gram would be funded entirely by state grants. The other two financing options are variations of the equity appra.dl shown in Figure 1. An equity contribution of S3 bil- lion would represent an entry rate for the project somewhat below point B in the figure; an equity contribution of $2.3 bil- lion was ctlculated to represent an entry rate at point B (i.e., at a price equal to the Total CO$tJ (billiond Finance aptiom Connant S Nominal S Construction Construction Financing Acr~ American Feasibility Study (Mar. 1982) F ERC License Application (Feb. 1983) Kentco Report 5.1 IJan. 1982 $) 5.1 (Jan. 1982 Sl for the Anchorage Chamber of Commerce (Jan. 1984) !5.1 (1983 $) APA Economic and Financi.JI Up-date (Feb. 1984) Draft FERC License Amendment (Nov. 1985) APA Draft Plan of Finance (Jan. 20, 1986) 5.4 (Jan. 1983 S) 5.4 (.l.ln. 1985 $) 5.4 (Jan. 1985 $) 15.3 0.0 15.3 1.6 15.3 1.7 15.3 2.0 13.4 3.4 11.8 5.2 11.8 4.4 12.7 7.8 12.7 7.8 Total 16.3 16.9 17.0 17 .J 16.8 17.0 16.2 20.5 20.6 1AII rii)Orts are evailable at the Aleka Po-Authority, Anctton~g~. R~nue loreast DOR mean Sept. 1983 DOR mean Dec. 1983 Connant $ (S.me year • "Conrtant $'"column) 1. 100% st.Jte appropriation of total capital cost l$5.1 billion). Consistent with SB25. 2. State appropriation of $3 billion with residual bond financing. 3. Mlnimym state appropriation of $2.3 billion with residual bond financing. State appropriation of $1.8 billion with residYal bond financing, Stolte appropriation of $800 million In equity and $778 million in note subilintion. Remaining financing requirements met by combination of A EA guo~rantlll!d loan and municipal bonds. 1. State appropriation of $1 .5 billion in equity and $400 million in rate stabilization fur>ds (RSF). 2. State appropriation of $1.7 billion In equity and $350 million In RSF, plut an REA-guaranteed loan of $1.5 billion, with residual bond financing, DOR mean State appropriation of $220 million for rate stabii- Jura 1986 ization, with revenue bonding of full project COlt. Not slated State to provide $520 million lor rate nabilizatlon by appropriation or pfedgi119 -ni091 from the Perma- rant Fund. $2 billion (nominal $)of project revenue bonds to be IICt.lred by Railbotlt utilltifl. R .. idual bond financi09 iaued by nate and IIKUred by Permanent Fund eamlnga. 2 Al•ka economic projection• for ertlmatll'l9 altc1rlcitv r9QUirerMnts for the RailtJelt, Vol. 9, by S. Goldsmith and E. Porter, ISEFl, Univer~ity of Al111ka-Ancho-.ge, SeP1. 1982 AI)Ort. a.tt.lle Pacific Northwest Llbonotorin. 24 The Nonhern E111i,.r, Vol. 11t, No.2 and 3 pria<>f t!Mctricity from natural gas 9ftner· nion at the time me project would begin operation). Ch~nging f'WMU. outlook. Worldwide crude oil prices h.d esc.lated dramatical· ly in me lftermath of me Iranian crisis of t 979. In February 1981, me contract price for Alaska North Slope crude on me Gulf Coast had peaked at $.36.90 per bar· rei, with experts predicting that prices would steadily increese into me distant future. Long· term revenue forecasts pre· pared in mid·1981. consequently, indicated that me State of Alaska would be phe- nomenally weal my. The Acres American feasibility study referenced the long·term revenue fOACast published by Battelle Pacific Northwest Laboratories as part of a major study of alternatives to me Su- sitna project. Table 2 and Figure 3 show this revenue foree.Ht. Clearly, cash financ- ing of Susitna was 1 plausible option in 1981. In mid-1982, however, a drtmatlc de- cline oceurred In the long-term revenue forecast, as indicated in Table 2 and Figure 3. Full cash financing for the Susitna proj- ect was no longer an obvious possibility, but some form of state subsidy remained clearly plausible. Because of the revised revenue outlook betwHn 1981 and 1982, some disquieting commentary on the viability of the proi· ect began to appear. A report by Tussing and Erickson in September 1982, for example, argued mat me oil prices of 1980 and 1961 were artificially high and could not continue to be tolerated in me marketplace; mat lower oil prices nulli· fied most of the economic auumPtions used to justify the SusitRa project; and that, by implication, me SUH would not be able to provide ma cash grants neau- sary to finance me project.1 1983 In 1983 an application for a fltderal license for the Susltna project was filed; it proposed two financing oPtions. In spite of this, however, the APA initiated new financial and economic analyses for the project because of continuing declines in oil prices. FERC appliation. On 28 Febnary 1983, an application was flied with F ERC for a federal license to construct and operate me Susitna project. Witt. regard to finan- Table 2. StJite of Alaska General Fund Rennue Forecuts, 1981 to 1986. (In$ millions, nominal.) ...!.!!L I til I til YEAR MAJ!.O! JUNE SEPT. DEC. M..UO! JUNE SEPT. DEC. 19U 110111 1417 lS75 l$67 2:206 29!1 }4~ l314 :WH 1916 9271 3919 (2.19 .Q61 Jm 3191 3j{)C Jl9l :1699 1917 IOI-C9 4$69 4991 4117 3769 lliS liCO 4UO 417l 1911 12179 4109 5141 4901 4111 lS40 37n 4106 <C2IO 1919 13981 5242 m2 1379 431-4 JS54 lll6 oU42 4161 1990 1~4 5141 S:WI S096 4:124 :1631 411)1 4606 5100 1991 16611 4717 692 4549 .at;) 3374 3994 4290 4911 1992 17932 4696 4166 oU41 39U 3291 3913 41j7 4163 1993 19395 4611 <1679 4235 3971 32j() 4103 41~ 4996 199-1 20326 4sn 4652 4163 3990 J2l2 4173 oj(JT7 5051 1995 20666 4261 4391 3192 3104 3092 l977 3127 4132 1996 20111 .a33 «l22 :1601 )64.4 2930 3154 )612 47U 1997 20717 Q44 4236 3716 3&19 3001 .al9 3741 .ens 1991 20520 4296 4276 3137 3119 302J 4129 3737 5110 l!U ms ..1lli... YEAR MAJ!.CH JUNE SEPT. DEC. M.UCH JUNE SEPT. DEC. M.AltCH 1915 ]521 )}40 :wsa no 3:m 32.5) 3266 3290 3260 1916 3701 1475 3SI4 }402 3037 2961 2954 nu m1 1917 40f2 :1921 l9SI :14-16 JOOI rm 2609 292j 1!J77 19U 41114 ll$7 4065 ll41 2764 l470 2243 2-474 1614 1919 ~ 4141 4)(,0 l290 2.694 1403 2106 2397 1454 1990 en 4175 +W l29S 26n 2324 lOCI 2310 1419 1991 4466 4237 ... 14 l:20C 2$12 W9 1926 2289 1)12 1992 4394 44)1 4$61 :ll12 25U DOl 19~ 2277 12)2 1993 4521 451'9 46lt 3163 2647 2337 19~ 2327 11$3 19114 4515 4392 -4490 3162 2551 1231 1162 2321 1096 IIIH 4510 4535 4419 3111 2A45 2160 104 2341 1045 1996 4516 4«11 +l6j Ym 23U 336) 11n 2215 997 1997 4517 4l4l ()S) 2999 %:ln 2040 17~ 2307 1013 1991 4$26 4125 4l27 29'31 2257 1991 17~ 2307 1061 -T1le 1911 ro-. wa ,._.a., 111o ...._ al s..:l.ol-.1 E..-iO ll--=tl, Uai-..ily al Alaob roc ...... "'--l.-; .-;..ar.a. ra.e.tal,...__ .. _. rort1<r ~by t.~ooAJab~ata.-J-19CI. n.19C:Z·I916,_,__ ~by Alaa 0t11ct «Me c I Mil ........ oMrioooft.. kwc-.of,...,._. _..,.. .. ....S n>yMy ....,.. ..... by .. Aiab~ofl-. '"'-"-....-.. 50tlt ~ J"''Mbiiity .w- (~ ile .... a.c. ..... ICIIIII • .._ will •-or leoo-the~ ..._l TIM Nonhern ElllllnRf, \lol. 18. No.2 and 3 25 Millions of Dollars $12000 STATE OF ALASKA GENERAL FUND REVENUE FORECAST 1981-1986 $10000 1981 (Battelle Report) $8000 $6000 March 1982 ---::::.._- $4000 March 1984 .. p;~~==~========--~M~.a~rch~,-------------------------------- March 1985 11 $2000 ......... ,'"""'--,_ ................ --~-----.......... . March 1986 '11 . ··-·-·····--··-,,,,., ..... _ ·-.... -... ~--... , ···~···--. $0+---~---r---+--~--~~--~--+---~---r---+---+--~--~ 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 Fiscal Year Figure 3. Stat• of Ahtlka General Fund,..,.,... forwcast, 1981·1986. cing, the license appliQtion stated that "costs for Watana through 1989 would be financed by $1.8 billion (1982 dollars) of state appropriations. Thereafter comple- tion of Watana is expected to be accom· plished by issuance of approximately $2.4 billion (1982 dollars) of revenue bonds." It also stated that the Devil Canyon phase would be financed entirely by revenue bonds. No doubt in response to revised revenue forecasts, the APA had dropped the full cash financing option, and reeal· culated the minimum state cash contribu· tion to be $1.8 billion, or $500 million less than the minimum contribution of $2.3 billion identified earlier in the Acres American report. Concern about the future price of crude oil-the keystone of the project's economic and financial feasibility assessments-was thereupon expressed by FERC's staff. Noting several deficiencies in the state's appfiQtion, FERC called for the APA to inootJ»cnte upd1ted oil price forecasts in its economic 1nd financial feasibility ~-fn response to this and to other critiques of the existing &n.JIY'lis, as well as to the changing oil price outlook gen· · eraify, the APA contriCted with the firm Sherman H. Clark .Jnd Associates (SHCA) 28 to provide updated forecasts. In the mean· time. a joint venture of two major engi· neering and construction firms, Harza Engineering and Ebasco Services (Harza- Ebasco), had been hired by the APA to provide engineering, design, and technical assistance in the FERC licensing process. Harza·Ebasco now initiated a review of the economic and financial studies for Susitna. 1984 During 1984 the financial dimension of the Susitna project began to receive serious attention from the APA, the legis· I.Jture, and others. At mid-year, the long- term revenue outlook was robust enough to support an optimistic view that the project could be financed with the help of sizeable state grants. By the end of the year, however, it had become apparent to APA firn~ncial planners that a new apprO.Jch was needed. 1984 Up-d.re. In February 1984 the APA released the draft report SU$/tn. Hydro- eltiCtrlc Proj«:t Economic MJd F/MnciM Up-d11r.. Much of this report w. the work of Harza-Ebasco; it incorporated the oil price forecasts of Sherman H. Clark and Associates. The report validated the eco· nomic feasibility of the project, but con· tained a lengthy discussion of the major unresolved financing issues hci ng the proJ· ect. This report also introduced the subsidy mechanism of "rate stabilization." Several financing options were reviewed by the authors of the report, but two were advanced as the most feasible: ( 1) state appropriations of $1.5 billion for equity in the project. and $400 million for rate stabilization, with the remaining costs financed by revenue bonds; or, (2) state appropriations of $1.7 billion for equity and $350 million for rate stabilization, plus a·$1.5 billion loan guaranteed by the U.S. Rural Electrification Administration (REA), with the remaining costs financed by tax-exempt revenue bonds (all figures in 1984 doif1rs). Thus, ._.nder these financing proposals, the st.Jte would not only pay a subsuntial portion of the project's construction costs; but would also aeata and finance a rate stabiliutlon fund. This fund (as explained under "Appro.ches to State Subsidiza· tion") would then be used to offse-t enough debt service on the outstanding bonds to keep the project's wholesale cost of power ~qual to the cost of the best thermld alternative until such time as The Northern Ene'-. Vol. 18, No.2 and 3 the eosi of alternative power for the proj· ect surpassed the ccrt of hydropower (i.e., until the "crossOYer point'' was reached). What c:haucttrizes the 1984 APA Up- d•~ is its somber assessment of the many conditions that would have to be met, and the public policy decisions and com· mltments that would have to be made, to finance me Susitna project s~fully using multi· billion-dollar debt issues. Among these were tha necessity for: (1} recognizing Susitn1 u one of the state's highest upital funding priorities; (2) pro· ~ adequate sec1.1rity for the very high volume of debt. which might require a ccn- stitutionally dedicatad stream of ravenue from the state's petroleum resources; 13) obtaining tax~xempt status for Susitna bonds; and (4) immediately providing for sizeable state appropriations to the Susit· na fund, as well as for the retention in the fund (by annual appropriation, if neces· sary) of the interest eamed on that money. Kentco report. Also -early in 1984, a re· port on the Susitr11 project was issued by the consulting firm of William Kent and Company (Kentco), which was working under a contract with the Anchorage Chamber of Commerce. This report, too, recommended a combination of state equity, a rate stabilization fund, andre- sidual revenue bond financing. The pro· posal, however, called for a larger rate stabilization fund ($778 million) and less equity ($800 million) than the 1984 Up- date. (These amounts are 1983 dollars.) The report further called for a majority of the debt to be guaranteed by REA, with the remainder to be tax~xempt municipal debt. The Kentco report was optimistic in its treatment of the financing issue! Ad· dressing the Anchorage Chamber of Com- merce, consultant William Kent str~sed that his finance plan "allowed a minimum need for state investment. Sf)fead the need for state appropriation over a larger number of years, and did not present 1 tax exemption problem." The plan, he said, "suggests· a-need to start appropri· ating from 178 to 226 million dollars annually starting with this l~slative session." Legislltive «tion. During the 1984 legi· sLtti.koe session (January to June). two measures were en.cted that dealt with Susitna financing: (1) the legislature ap- pro¥ed the Watana project at a cost of $3.75 billion in 1983 dollars; and (2) the legislature made a continuing appropria· The Nonh•n EntiM«, VoL 111, No. 2 and 3 tion for "eQUity investment in and rate stabilization for the Susitna project" in the amounts of $100 million for fiscal year 1985 and $200 million for each of the six succeeding fiscal years.1 While the Watana construction cost figure of $3.75 billion was traceable to the Harza-Ebasco Up-d11tt1, the origin of the St .3 billion (nominal dollars) total set aside by the continuing appropriation was a mystery. Many people assumed that it was based on the Kentco report and Wil· liam Kent's Chamber of Commerce speech. In any case, it bore no resemblance to the finance plans proposed in the Up-dlltt! or those being discussed by the APA staff and board. Meanwhile, APA staff continued to maintain that some $2 billion (constant dollars) was needed from the state to help finance the project. Thus, instead of the $200 million per year for FY1986-199t appropriated by the legisl1ture, $578 mil· lion per year would be required-or at least $316 million per year if interest could accumulate in the Susitna fund.' RIJVtlflue outlook. Was it reasonable to ex· pect that $316 million a year (plus interest earnings of the fund) would be forthcom· ing from the legislature for six successive years to finance Susitna? In mid-1984, a plausible argument indeed could be made that the money was available, if the legi- slature had the will to see the project through. Note that the revenue projections shown in Table 2 and Figure 3 for 1984 are significantly higher than those made the previous year. If one were to project that the state's operating budget would grow at the rate of inflation (approximate· ly 5 percent) from a ba-se of approximate- ly $2.2 billion in FY1984, then the 1984 revenue forecasts suggest that the State would have over $1 billion a year during FY 1986-1991 to allocate for the capital projects and loan programs. Under these fiscal circumstances, appropriations of $316 million per year to a fund retaining its own investment earnings certainly was not, on the face of it at least, impossible. By the end of 1984, however, revenue forecasts had fallen to their 1983 levels.' Also, additional oil price reductions seemed probable, due to 1 steady erosion of OPEC's influence over oil prices. There were other reasons, as W.ll, to believe that the expectation of massive and ccntinuing state appropriations for Susitne was unrealistic. Notably, the 1984 Legislature had appropriated only $100 million for Susitna for FY t985, while total capital appropriations that session exceeded $1.2 billion, compm1ng the lar1111st unrestricted general fund capital bu~ in the rtlte's history. This was hardly a good indiQtlon of lf'illslatlve will to sacrifice other capital projects in order to pay for Susitna. 1985 During 1985 the APA and its consul- tants redesigned the Susitna' project in en effort to facilitate its financing. Toward the end of the year a tea-m of financial experts initiated work on a definitive plan of finance based on the reconfigured proj- ect. Stii(Jing Proposal At Its meeting of Ja-nuary 23, 1985, the board of directors of the APA adopted a staff recommendation for a SusitAI plan of finance that called for state appropria· tions of $1.94 billion over the fiscal years 1985·1995 to 1 fund that would retain its interest earnings. This money would be used for both equity and rate stabilization. Minutes of the meeting show that the board eonsidered this option the best pre· sented to date, and directed the staff to continue refining it. By this time, however, it wa-s increas- ingly apparent to many people that if the project were to go forward, it would have to do so under a financing scheme that did not require such large state cash contributions. Among those recognizing this were high-level individuals in the par· ent companies of the Harza·Ebasco joint venture, who in January 1985 held infor· mal meetings with the Governor, APA executive staff, and board members to discuss a proposal for staging the con· struction of the Watana dam. Under this approach, Watana would be constructed in two phases (the first and the third phase); the Devil Canyon dam would be the second, middle phase of the project. The virtue of developing the project in three phases instead of two was primarily financial. Three phases of construction would match more closely than two phases the growth of electricity demand in the Railbelt. Al a consequence, there would be less unused capacity in the Wa- tana dam in the early years of project operation, end therefore a greater ability of utility customers to carry the burden of revenue bond financing. Thus, accord· lng to the staging proposal, all three phases would be financed entirely by revenue bonds, with a comparatively modest state cash contribution remain· ing necesSArY for rate stabiliution only in the early years. In February the Board received a public presentation of the conceptual proposal and authorized H~ru-E~sco to develop it further in an expeditious man·. ner. At its meeting of May 3, 1985, the Board approved the staged approach, and directed the APA staff to begin preparing an amendment to the FE RC license appli· cation that incorporated the reconfigured project. By October, APA staff and consultants h.:! pn~Pared a comprehensive analysis of the economic and financial aspects of the new three-phase project. On the basis of assumptions about the cost of generating power from natural gas and coal (the next best alternatives to Susltna}, the APA staff calculated that a rate stabilization fund adequate to keep the wholesale cost of Susitna power equal to its thermal competitor would require as little as $253 million (1985 dollars). During the 1985 legislative session the continuing appropriation to Susitna of $200 million had been mide, so there was already enough money in the bank to finance the project under this scheme (provided the interest on this money was allowed to accumulate in, or was annually appro- priated to, the fund). When the APA released its draft License Application Amendment in November, the estimate of state contributions to a rate stabilization fund had decreased further to $220 million (1985 dollars). The primary reason for these low estimates of rate sta- bilization was the assumption that without Susitna large·scale coal plants would be required in the 1990s to meet Railbelt energy demand, causing substantial rate increases. Preparation of a financial plan. By late 1985 it was increasingly evident that the question of financing was critical for the Susitna project. In particular, financial advisers to the APA were concerned about the real-world problems of selling so much debt for a single project in the national market. These were the same individuals who had contributed the lengthy discus- sion of these problems to the 1984 Up- datil. The task of mari(eting Susitna bonds w.as much more problematic now thn the sute equity contribution had been aJin'UN.ted altogether. 'Pressure also was coming from the legislature for the APA to produce 1 cred- ible plan of finance for Susitna. Finally, critics of the project, such as representa- tives of public interest advocacy groups 28 and the environmental lobby, were openly finance team estimated the maxim\Jm asserting that the project was not finan· security that the Railbelt utilities could cially viable. They claimed that the bond offer bondholders against the risk of the market would not ·abs·;,:t,-~-muctt debt. project's never being completed. for i~-in9femasilveproTeclTnlerioe<rfOr·a fhe results of this analysis indicaud comp_araJ)yeJy~~iiniii1ni~efareamarwas . that-tiie u~; li~it ~t .i.rn:lebtedness for i~olated frol11_tb~..oower.~:[g.:Q1'!!1if.9~Ji~-. the utilities for the project was $2 billion nental Uf1ited States, (nominal). Thus, the State ·of Alaska Late in 1985, APA's executive director would have to Issue special revenue bonds assembled a team of financial advisers (in· to cover the remaining project costs. The eluding several bond underwriters, bond State of Alaska, however, could not ade· lawyers, and others) to begin preparing a quately secure that amount of bonds, even definitive plan of finance for the project. with the pledge of its general obligation 1986 The team of financial advisers charged with preparing a workable financing plan for the Susitna project presented a draft plan of finance to the board of directors on January 23. 1986. Jhlt_r_ev~I~JiQ!lL<:On­ tainedil'lJI:li.s document Led..direct!Y .to .. the ': . . the finance team concluded that only a commitment of the earnings of the Alaska Permanent Fund would suffice to secure the state's special revenue bonds." termination of the_ pt()ject tw() months later. Plan of finafiCf/. The draft finance plan presented to the Board in January was built on the premise that very little state cash would be available, and that all proj- ect costs would therefore have to be covered through the sale of revenue bonds. Summed over time, these bonds would total more than $20 billion (nominal). The key question was whether the utilities and the state could successfully carry that much debt. To assiSS the debt capacity of the util- Ities, the finance tum calculated the max- imum annual rnenue that the utilities could generate for debt service, using as a basis the assumPtion that the utilities' customers could tolerate 1 maximum rate increase of 3 percent (real) per year. Then, using a 25 percent estimate for the maxi· mum tolerable one-time rate hike that the Railbelt ratepayers could withstand in the event the project never operated, the debt capacity. After reviewing all plausible alternative sources of security, conse- QUently, the finance team concluded that only 1 commitment of the earnings of the Alaska Permanent Fund would suffice to secure the state's special revenue bonds. The financial team also concluded that, beyond issuing special revenue bonds and pledging the income from the Permanent Fund as !eCtlrity, the State of Alaska would also have to provide a rate stabiliza- tion fund of $520 million (1985 dollars; or $2.3 billion in nominal dollars) and an additional $323 million ( 1985 dollars) pre- construction licensing and development costs. The reason the rate stabilization requirement was tligher than the APA estimate published in the draft FERC license amendment ($220 million, 1985 dollars} is that the draft finance plan sta- bilized rates to the level of a 3 percent (real) annual increase in retail electric rates, rather than to the somewhat higher level of electric rates estimated by the APA to result from the best thermal alternative. At its meeting of January 23, the APA board requested its eKecutive director to submit the draft Susitna plan of finance to rigorous scrutiny by a major munici- pal bond underwriting firm, to test the validity of the finance team's findings. Under contract to APA, the firm of Pru- dentiai·Bache Securities then reviewed the analysis and conclusions of the plan, and concurred with them in a report dated \ !' Marett 21, 1986. Three days later, at its ---1\" meeting of March 24, the APA board voted to withdraw the Susitna license applica- tion. REFLECTIONS ON THE OUEST FOR FINANCE: PROBLEMS WITH RATE STABILIZATION Even if 1 politically acceptable means of securing the state's Susitna revenue boods had been found, it is doubtful that negotiations between the APA and the Rail belt utilities would have been consum-· .... The Northet'n Engi,..,, Vol. 18, No.2 1nd 3 ....... : . ·~red Wlder the finance plan advocated by the APA-that is, with rate stabiliza· tion providing the only vehicle of state sutKidy. At tne time the Susitna project col· lapsed, Mgatiations between the Railbelt utilities and the APA for conditional power ~les contracts had been under way for some time, but they· were still in very preliminary stages. The underlying prob- lems of developing a contract that incor- porated a rate stabilization fund were therefore never fully identified nor con· ironted by the negotiators. Neither of the existing contracts be- tween APA and purchasers of power from its projects (the four~am pool and Bradley Lake) incorporate rate stabilization. There- fore the following analysis of the rate sta· bilization approach is speculative insofar as the concept has yet to be implemented. Nonetheless, in the course of financial planning for the Susitna project, several seriously complicating features of rate stabilization emerged. ProbltHns with Rate Srabilization There are two reasons for doubting that power sales contracts placing signifi- cant reliance on a rate stabilization fund could have been successfully negotiated betw!erl the APA and Railbelt utilities. The first has to do with the pervasive pub· lie opinion in the Railbelt region that the Susitna project was going to bring immed· iate rate relief, or at least stabilize electric energy prices at their then-current level. The second is that probably neither the utilities nor the state would have been willing to expose themselves to the risks that rate stabilization entails. to be caused by the expiration of existing favorable contracts which made Cook Inlet natural gas !lOme of the cneapest fuel in the country. By the time rate stabilization entered the financial picture in 1984., however, Susitna could promise favorable rates to consumers only in the long run. With rate stabilization, utility customers would have to pay along the price curve of the thermal alternative until a point some· where in the distant future ( 1 0 or more years after the project was operating). That price curve, consequently, would expose utility customers to the very same near· term rate shodts from rising fuel costs that Susitna was presumed to avoid. As this realization permeated the utili· ties' governing boards, the municipal gov- ernments, lnd the public generally, it is reasonable to expttet that negotiations over Susitna power sales agreements would "Thus, a definite risk existed that the Railbelt uttlittes might have to pay a substantial premium for Susitna power. Further, the potential magnitude of this premium was very t " grea .... the APA after 1985-i.e., sulxidy to be used exclusively for rate stabilization -so accentuated the risk of falling alternative energy prices that neither the utilities nor the state would have been willing to as- sume it. The risk of cost overruns on any major engineering project is always present, and has many potential sources. In the case of Susitna, the probability of significant cost overruns was not especially high when compared to major project.s using new and complex technology and subject to strict governmental regulation (<H in the case of nuclear power plants, for example). Nonetheless, it is unlikely that the utilities would have accepted any of this risk in power sales agre.ments with the APA. A risk ·that was more difficult to ana· lyze and to deal with in the Susitna case surrounds the behavior of alternative en· ergy prices. Here is where the risk-l"elated problems inherent in rate stabilization financing ~ apparent. A rate stabili· zation fund of a fixed amount for Susitna would guarantee a floor on wholesale elec- tricity prices, based on a projection of prices from the thermal alternative. If al· ternative energy prices were to fall be· low this projected floor, access to them would be blocked by a Susitna power sales agreement. Thus, a definite risk existed that the Railbelt utilities might have to pay a substantial premium for Susitna power. Further, the potential magnitude of this premium was very great, as revealed in an analysis prepared by the APA in October 1985. The APA 's 1985 risk analysis for Sus it· na investigated the sensitivity of the re· have become very protracted and compli- cated indeed. quirement for rate stabilization to certain fossil fuel price assumptions.10 It showed, .:;:-Allocation of risk. Among the risks associ· in particular, that the present value of the Public expectllcions. Financing for APA's ated with any major energy project, two cost of a rate stabilization fund was only other major hydroelectric projects, the are crucial: (1) the risk that the project $253 million using a "base case" set of as- four projects of . .J~~-~():gtf.~.-~r~ will cost substantially more to build than sumptions about (a) long-term crude oil PcOf''-arnn3rad_lf.!Y. 41c~. n~Hlt$_ Qfl __ s.tate . assumed in feasibility studies; and (2) the price trends, (b) the future availability of suliii<r·r·in-the--form of equity. In both risk that the price of competing energy Cook Inlet natural gas for electrical gener- -~~es; state casli" 8pP,.opriations--to the sources wil.l not perform as expected (i.e., ation, and (c) the method by which Cook projects cover approxim-ately lfa1"t"l>f the . will fail to increase, or not increase as rap-Inlet gas prices would be set in the future. costofeonstructioh, with th!fremairi<fer idly as thought}. 1 ither eventuality will When those "base case" assumptions were of projeCt cost5covereo b"y bOrrowing.• .~!'~ _ _!!le ~ ·~'?~need pr ucer relaxed, hO'Never, the present value of the rhis financin!f nsurn ·cunamers -·or·-a _i~ the ~et •. at least in the near term. cCHt of the rate stabilization fund soared. wholesale CCHt of power that is comparable Somehow, then, these risks must be Under conservative but very reasonable at the outset to the cost of power from borne by the developer of an energy proj· assumptions, fOf example, the analysis thermal plants. ect or the purchasers of the power, oral· showed that a fund of between $1 billion ll!ailbelt residents had come to expect located between them. and $2 billion in 1985 dollars would be the same of the Susitna project. The proj-In the case of Susitna, contract negotia· necessary to stabilize Susitna's rates at &ct. after all, had long been touted as tile tions between the APA and Railbelt utili· the level of the thermal alternative (nat· most economical source of Rail belt power ties never progressed to the issue of the ural gas). The diHerence between the available, and the best defense against allocation of these risks. Nevertheless, the "base case" estimate of $253 million and sudden and dramatic rate increases likely approach to project financing adopted by this estimate, consequently, represented The Northern Enalneer, Vol. 18, No.2 and 3 29 ~ -~ '' Figun 4. Ri* of COd Oftmln It the same under ltitNtr fonn of .,IMidy. but the rt• of foail fuel price~ being 1oww man expec:M is 1et1 with ~ulty then with ~ atebilization. Flgun 5. Cost per kwh A B 0 the magnitude of the tot;ll rate premium that Susitna customers might haw to pay if those conservative but reasonable as· sumptions proved true. Exposure to the risk of dedining al- ternative (fossil) fuel prices _g siQoificantly less under the equity financing ~­ ~~ate stabilization approach_. This is bet41use the gap between the cost of power from the hydro project and the cost of power from the thermal alternative will close sooner under equity financing. The differences between rate stabilization and equity in this respect are bert explained graphically. Figt.~res 4 and 5 illustrate that the risk of cost overruns are identical un· der both financing approaches, but that the risk of declining fossil fuel prices is greater under rate stabilization. The cross- over point C In Figure 4 occurs much sooner than the crossover point C in Fig- ure 5, thereby reducing the length of time consumers would have to pay a premium for hydropower in the early years, if an unexpected decline in fossil fuels should occur. Frana the consumers' perspective, a sizeable equity contribution is the pre- ten.d 4Mthod of providing state subsidy to an energy project such as Susitna, be· t41use it minimizes risk and offers the pros· pect of rates lower than thosa that would otherwise prevail. From the state's per- 30 RISKS OF EQUITY FINANCING spective, on the other hand, rate stabiliza- tion is the preferred approach because it minimizes the state subsidy. The experi· ence of the APA with the Susitna project suggests thtt to the extent it is relied upon exclusively, rate stabilization may simply not be viable, particularly when used for a sizeable project and particularly in a period of unstable fossil fuel prices. When state subsidy in the form of C41sh grants is made to a project, the money should be used to reduce the overall level of debt for the project, rather than reduce the debt service burden in the early years of operation with the aim of keeping wholesale electricity costs ·com~rable to a long-term projection of the avoided costs from alternative generation sources. SUMMARY In the course of planning for the Susit- na project, three sources of financing were proposed: (1) state appropriations to cover some portion of construction costs (equity); (2) state appropriations to cover some portion of the debt service on reve- nue bonds during tht early years of proj- ect operation (rate stabilization); and (3) revenue bonds. Planning for tht Susitna project begen with tht IISSIJfnption that cash appropria- tions from the st11e's general fund would cover all project costs-l.e., a 100 percent -Thermal alt.m.atln wltll price drop -Hydro cwt witll onrrun -Hydro coot Yean equity approach. later, It was proposed that a mix of state equity and revenue bonds be used to finance the project. Fol· lowing that. the concePt of a rate stabili· zation fund was a<lded to the combination of equity and revenue bonds (because rate stabilization tended to reduce the amount of required state equity). Finally. the equity component was eliminated alto· gether, and it was decided that financing for the Susitna project would be eccomp· lished entirely by revenue bonds and a rate stabilization fund. This evolution of Susltna's financial planning wes driven by the eroding out- look for state rewnues and by uncertain evidence of legislative resolve regarding financial commitment to the project. From the beginning, it was recognized that Susitna would require a substantial subsidy from the state. IJ_!1im~!y, ar~_~_ePt~!?le PliD of finance for the project eluded tht APA-~~sethe stall dlcfooiKave e~ money_fO_provide tfiesubSidY-tha-pr~ r:ie!Ki!Q:.The endc:ime be<iuse of_th-eprob- lem of providing adequate security for the large volume of revenue bonds ctllad for by the finance plan, and this problem stemmed from the state's intbility to pro- vide equity investment in the project sufficient to rtdi.IQ borrowing require- ments to levels that could be secured by the utilities through conventional power sales contrtcts. Thto Nort'-n Engl._, Vol. 18, No.2 and 3 RISKS OF RATE STABILIZATION FINANCING Coat per kwh A B 0 Risk ol price drop Even if a politically acceptable muns had been devised to secure the Susitna project revenue bonds, it is unlikely that a workable contract could have been sue· cessfully negotiated between the Railbelt utilities and the APA that relied heavily on a rate stabilization fund of a fixed amount. There are two reasons for this evaluation of the situation: (1) utility customers in the Railbelt expected the Susit~ project to protect them from re- tail electricity rate hikes, when in fact the rate stabilization approach assured them of rate hikes and would not r.,ult in sav- ings to customers for many years, and (2) the concept of rate stabilization entailed risks that neither the state nor the utilities would be willing to assume. From the point of view of public policy considera· tions, rate stabilization might be the pre· ferred appro.ctl to providing state subsidy to large energy projects because it mini· mizes state contribution. However. the experience of the Susitna project suggests that it is not practical . .S~tt subsidy for future hydroelectric projects· (to the ex· ftirit it rs rieeiSsirv an<n•vllllblel Should t.ke tf'te form of equity; i.e., it shoold re- duce the need for borrowing. NOTES 's~ rublldy-regarded by rnMIY people • dfti.-.bft from • pt~bllc policy penpectlw, becau• It provides • ~ of distrlbutint The Ncwth«n Engl.-, Vot 18, No. 2 and 3 -Thermal ai!Mnatiw the state's oil -~th to citlzena. Other •· peen of the laue· of subcidy for the project are di~CUS*l in Gordon S. H ... riaon, "Science, SU11itn• and political deciaion m•king." Th• Northllnl Eng/,_, 19S4, Vol. 16, No.3. 2 1n ti"MI rnl world, a project would newr be without dtbt, becaute mejor renewah 11nd rwpfacernenn of the turbine, venerator, and swftchylll'd equipment would have to be fi. nanc.d through the iuue,of new d<Hlt. 3 Arion R. Tual09 and Gregg K. Erickson, "Alak.a En4JrW Planning Studies," Policy Anelvsi• Paper No. 82-13, a review of three consultant atudlea aubmittld to Alaaka a tate agencies in f"IICII ye..-1982, Nowmber 18, 1982. S.. allo, Rlch ... d Emerman, "The Problble Effect of lower Stata Rewnut Forwc.ts on the Projection of Electricity O.mand in the R•ilbelt," palicy and .naly- lil paper 82-10, Division of Polley and Dewlopment and Pl•nning, Office of the Gowmor, September 21, 1982. S.. testi- mony of Gregg Erickson on SB 25. sa 26, and SB ~ before House Finance Commit- 1M on Mev 18, 1981 (minutea, p. 1325). •The Kantco plan of finance-not nt•llatic, howewr, bet:au• of cu tbeclcs in fedltnll lunda for REA. In any c:aoe, the Sutitn• project would not h.,. rwc:elved lavor8ble con.idaratlon by that egency becaute most of the ~ from the proJ«t would be aold to "urt.n cooperativa," which .,.IICCOI'ded • low priority in the distribution of REA lunda. See ''T 1'11nt!Crlpt of Quettlom and An- _, s-ion" following ~ by u.s. Senator Ted Stewna to the Thl.-th Alaska $Ute ~turt, Februwy 1984. 1 Tt-o. continui09 appropriation waa declared unconnltution~ on Auoun 30, 1986. by the Alaka SYperior Court. Thennal altematm with pric:. drop Flfure 5. Rlt* of foail fuel pO'icel being low..- m.n •xpected il er-ter under ti"MI rru n.lollizatlon .. t.idy ...,._t.,_.._ ltt81r-~tor-" the-point m.n wlttt th1 -.ulty ..,.,......n. F 1twe 4. 1 See minutes of APA board rnNting of Novem- ber 9,1984. 7 It should be noted that the 30th perc.ntlle, rls k-ldlusted fore<:aata dewloped by the 0.. partment of R ..... nue _,.. ewn Ia-.. sig· nlficantly, than the mean probability fore· cat lhown in Table 2. The 30th percentile lorecart reflects • 70 pen;ent probebil i ty that the eatimltll will be exceeded, and ia used by the executive and legislative bran- dill for bodgatint purpows. 1 1n the c-. of the four-Oam pool, ti"MI debt component ia • aua-funded lonQ-tetm aub- lidized loen. In the c.. of Bradley t...k•. which hM jun Mg~Jn constrUCtion, ti"MI debt component will be project l1l'ltllnue bonds is· sued by the APA and 18CUI'Wd by contnlets with the utilities purcn.aing power from the project. 1A third major riak is that the forecan demand for the OUtl!Ut of the project will not mate- rialize. This -• ,.;or risk of the Susitna project, but one that -not tek.an •rioullv by Railbelt utility managen, who constantly chided the APA for ita ~wltltimates of Iced Qrowth. Thus, it -'~• unlikely that allocation of this rilk would haw impeded contract negotiftlom with APA. 10 The rwaulu of the analyais, in table fOI"mat, were included in • package of material pre· pllred by APA n.ff end COniUitann and dl .. trlbuted to the Board of Oirecton at tht ~"11 of October 2, 1985. The table Ia ti· tied "Senaltlvltv Allllysls," but na ne/tt1lr table number nor pege number. Furth", the table is not ~ in the APA'I draft F EAC llcan• llll'llf\dment, althol.tgh 'the e-n- eraf outCome of the ltf'llltlvity analylla it al· luded to in Exhibit 0, p. 0-4-6, of rllt ~ amendment. • 31 NORTHERN ENGINEER 4 14 CONTENTS Volume 18, Number 2 and 3 Summer and Fall 1986 A Report on the Third Chinese Conference on Permafrost: China Expands Research on Frozen Ground by Troy L. Pewe ...................................... 4 Alaska Peninsula: Coals of Unga Island by Roy D. Merritt ..................................... 9 Seismic Design of Valve Operator Supports: Natural Frequency Consideration by Debendra K. Das ................................... 14 Northwest Territories, Canada: Buried Water and Sewer Service Connections in Permafrost Areas by Sukhi Cheema ...................................... 18 Susitna Hydroelectric Project: Futile Quest for a Plan of Finance by Gordon S. Harrison ................................. 22 Bethel, Alaska; Kuskokwim River Bank Erosion by David C. Lanning ................................... 32 Guiding Alaska into the Future by Ted G. Eschenbach and George A. Geistauts .............. 39 Subarctic Alaska: Design Improvements for Mine Access Roads by Nils I. Johansen and Nicasio Lozano .................... 46 Thule Air Base, Greenland: Foundations on Permafrost by Alfred R. Mangus .................................. 51 Back of the Book Noted, Meetings, Publications ............................ 58 COVER This striking example of the recent erosion of the banks of the Kuskokwim River in Bethel, Alaska, is viewed downstream from the end of the bulkhead (see page 32). The building was moved to another site shortly after this autumn 1985 picture was taken. 51 (Photo by James H. Barker.) last issue of THE NORTHERN ENGINEER (ISSN 0029-3083) as a quarterly publication of the Geophysical Institute, University of Alaska- -Dr. Syun-lchi Akasofu, Director. The magazine focuses ori engineering practice and technological developments in cold regions, but in the . sense, including articles stemming from the physical, biological, and behavioral sciences. It also includes views and comments having a social thrust, so long as the viewpoint relates to technical problems of northern habitation, commerce, development, or the environment. Opinions reviews, and articles are those of the authors and not necessarily those of the University of Alaska, the Geophysical Institute, or The t:nGrine,,r staff and Board. Address all correspondence to THE EDITOR, THE NORTHERN ENGINEER, SCHOOL OF ENGINEERING, OF ALASKA-FAIRBANKS, FAIRBANKS, ALASKA 99775-0660, U.S.A. The University of Alaska is an EO/AA employer and educa- Engineer, Vol. 18, No.2 and 3 3