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Resolution No. 10-72 CITY OF TIGARD, OREGON TIGARD CITY COUNCIL RESOLUTION NO. 10- 7;L - A RESOLUTION APPROVING THE SECOND AMENDMENT TO THE WATER PARTNERSHIP INTERGOVERNMENTAL AGREEMENT, INCLUDING THE SUPPLY FACILITIES CAPTIAL IMPROVEMENT PLAN,AND AUTHORIZING THE MAYOR TO EXECUTE THE AMENDMENT WHEREAS, in August 2008 the cities of Tigard and Lake Oswego entered into a water partnership formalized in the Intergovernmental Agreement Regarding Water Supply Facilities, Design, Construction, and Operation (Agreement); and WHEREAS, this second amendment will incorporate Exhibit 5 and updated Exhibits 3 and 7 into the Agreement;and WHEREAS, at the time the Agreement was executed, Exhibit 5, the "Supply Facilities Capital Improvement Program" (SFCIP),had not been developed;and WHEREAS, the SFCIP is now complete and has been approved by the Oversight Committee;and WHEREAS, the City Council of each party is required to approve the SFCIP;and WHEREAS, the existing exhibits to the Agreement may need to be updated as partnership projects become more refined; and WHEREAS, Exhibit 3, "Map of Supply Facilities," has been updated and contains more detailed information on the raw water pipeline and the preferred transmission alignment;and WHEREAS, Exhibit 7, "Allocation of System Improvement Costs to the Parries," has been updated. The updated Exhibit sets Tigard's system improvement costs at $123 million, which includes inflationary costs through 2016, the additional cost of ozone treatment, and a shift in the cost allocation based on the condition of Lake Oswego's existing water facilities. NOW,THEREFORE,BE IT RESOLVED by the Tigard City Council that: SECTION 1: The Tigard City Council hereby approves Attachment A, the Second Amendment to the Intergovernmental Agreement Regarding Water Supply Facilities, Design, Construction, and Operation (Agreement) and authorizes the Mayor to execute the amendment. SECTION 2: The Tigard City Council hereby approves Exhibit 5, the Supply Facilities Capital Improvement Program (SFCIP), as included in the second amendment to the Agreement. The SFCIP refines Tigard's cost share in water partnership capital improvements. The SFCIP shall be incorporated into Tigard's Capital Improvement Plan when the Plan is next updated. SECTION 3: The Tigard City Council hereby approves the updated Exhibit 3, Map of Supply Facilities, as included in the second amendment to the Agreement. RESOLUTION NO. 10 Page 1 SECTION 4: The Tigard City Council hereby approves the updated Exhibit 7, Allocation of System Improvement Costs to the Parties,as included in the second amendment to the Agreement. SECTION 5: This resolution is effective immediately upon passage. PASSED: This day of Lc (�)JM2010. Mayor-City of Tigard ATTEST: City Recorder-City of Tigard RESOLUTION NO. 10- 7-2 Page 2 EXHIBIT 'A' SECOND AMENDMENT TO INTERGOVERNMENTAL AGREEMENT REGARDING WATER SUPPLY FACILITIES, DESIGN, CONSTRUCTION, AND OPERATION THIS SECOND AMENDMENT to Intergovernmental Agreement Regarding Water Supply Facilities, Design, Construction, and Operation (Second Amendment) is effective this day of , 2010, by and between the City of Lake Oswego (Lake Oswego), an Oregon municipal corporation, and the City of Tigard (Tigard), an Oregon municipal corporation. Recitals WHEREAS, on August 6, 2008, the Parties executed the Intergovernmental Agreement Regarding Water Supply Facilities, Design, Construction, and Operation (Agreement); and WHEREAS, the Agreement provides for the inclusion of a Supply Facilities Capital Improvement Program (SFCIP) and incorporates exhibits identifying assets to be constructed and construction cost estimates; and WHEREAS, the Agreement provides that the Council of each Party shall approve a Supply Facilities Capital Improvement Program ("SFCIP"), which will become Exhibit 5 to the Agreement; and WHEREAS, the Agreement provides that from time to time exhibits may be revised based upon further evaluation and studies; and WHEREAS, further evaluation and studies have occurred and the Parties agree that certain exhibits should be amended and new exhibits added to reflect this updated information; NOW, THEREFORE, THE PARTIES AGREE TO EXECUTE THIS SECOND AMENDMENT AS FOLLOWS: Section 1. Addition of Exhibit 5; Revision of Exhibits 3, and 7. Attached Exhibit 5, the Supply Facilities Capital Improvement Program, is hereby added to the Agreement. Exhibits 3 (Map of Supply Facilities) and 7 (Allocation of System Improvement Costs to the Parties) of the Agreement are hereby revised to read as set forth in attached Exhibits 3 and 7. Section 2. Mapleton Properties. The Parties agree that the Mapleton Drive properties (21E24BD Tax Lots 01200, 01300, 01400, and 01500) (Mapleton Properties) are not included as assets subject to the Agreement, but shall be added in the future if any permitting authority requires improvements or dedications of any kind on the Mapleton Properties as a condition of approval of Project improvements to the Water Page - 1 SECOND AMENDMENT TO INTERGOVERNMENTAL AGREEMENT REGARDING WATER SUPPLY FACILITIES, DESIGN, CONSTRUCTION AND OPERATION Treatment Plant Facilities or if the Mapleton Properties should otherwise become necessary to be utilized as part of the Project. If the Mapleton Properties are added, appraisals will be performed and the exhibits shall be modified as necessary to include the Mapleton Properties at the appraised value. Upon the addition of the Mapleton Properties, Tigard shall pay Lake Oswego a sum equaling the percentage of the appraised value of those properties that equals Tigard's percentage of System Improvement Costs for the water treatment plant as shown in the revised Exhibit 7 attached hereto. Addition of other assets and valuation thereof may be made by subsequent agreement of the Parties and amendment of applicable exhibits. Section 3. Entire Agreement. In all other respects, the Agreement dated August 6, 2008 as subsequently amended by the First Amendment is in full force and effect except as specifically amended by this Second Amendment. IN WITNESS WHEREOF the Parties have dated and signed this Agreement. CITY OF LAKE OSWEGO CITY OF TIGARD Mayor Mayor Dated Dated Attest City Recorder City Recorder Dated Dated V City Attorney City Attorney Page - 2 SECOND AMENDMENT TO INTERGOVERNMENTAL AGREEMENT REGARDING WATER SUPPLY FACILITIES, DESIGN, CONSTRUCTION AND OPERATION Map of Supply Facilities - f` y + . s� `� ~. t •.�. '� a�T4�. '� a.,, Y ",y�` ;r'� � �r.est '��f.�� •. "�.. •�. .. -,i Y f faa �M.l � -t._., ..''il£� .,� 1.. �;, , Ilf. t ! i>: �-►tw Y -'P l(e #M..L F�{ _ - Clackamas Count, a ' • :• _ ,vti " i_ r J ' 5; a s. '�► is ^�u 3 , Reservoir_ • Gladstone Tigarc = o + r t _ Lake OswegoLak- Oswego 77 2<. WrP J �J ..;;M r fW _Recommended - RWP Alignment Existing Finished Water Pipeline js'�; 4`1 - _- i gas r{� West Llnn t Existing Raw Water Pipeline 0 2 7-7 Miles Lake Oswego • Tigard Water Partnership sharing water•connecting communities www.lotigordwater.org Exhibit 5 To Intergovernmental Agreement Supply Facilities Capital Improvement Program November 29, 2010 t oils r . .4tc :. ��, c ! �- Lam, a., �� �� � > .� ;•.�, ��,-�, � �.. I Brown Caldwell I LAKE OSWEGO/TIGARD WATER PARTNERSHIP EXHIBIT 5 to IGA SUPPLY FACILITIES CAPITAL IMPROVEMENT PROGRAM Summary Project Name: Lake Oswego/Tigard Water Supply Expansion Project Description: Plan, fund,and construct improvements to Lake Oswego's and Tigard's water systems,including an expansion of Lake Oswego's water supply system from its current capacity of 16 million gallons per day (mgd) to 32 mgd, and infrastructure required to provide additional flow to Tigard's water system. Funded /Unfunded: Funded Estimated Date of Completion: July 1,2016 Justification: Intergovernmental Agreement The total projected revenues and expenses for the next five fiscal years are presented in Table 1. SupplyTable 1. Water Fiscal Year($in 000'x) Revenue Source(l)(2) Description 2011-12 2012.13 2013-14 2014.15 2015-16 Total (LO) Operating 0 0 2,800 3,000 1,239 7,039 (LO) SDC's 450 550 550 550 550 2,650 (LO) Bonds 1 4,615 16,825 39,388 28,919 0 89,747 (LO) subtotal 5,065 17,375 42,738 32,469 1,789 99,436 (Tigard) Intergovt'I 5,835 20,015 49,232 37,401 2,061 114,544 Resources Total 10,900 37,390 91,970 69,870 3,850 213,980 Expenses(3) Design 5,140 6,390 4,500 790 0 16,820 Proj.Admin. 5,760 6,280 6,390 6,360 1,420 26,210 Construction 0 24,720 81,080 62,720 2,430 170,950 Expenses Total 10,900 37,390 91,970 69,870 3,850 213,980 Notes: (1)Lake Oswego share of costs= 0.4647 (2)Tigard share of costs= 0.5353 Total= 1.0000 (3)Expenses are based on Class 3 construction estimates with accuracy of-20%to+30%. isLake Oswego-Tigard Brown Water Partnership Caldwell shanng wow•conneong commufwvs 1 Exhibit 5-Supply Facilities Capital Improvement Program Program Overview The scope for the project includes design and construction of the following infrastructure: ■ A new 38-mgd river intake pump station (RIPS) located on the Clackamas River in Gladstone. Initial capacity is 32 mgd but sizing will allow later expansion to the ultimate capacity of 38 mgd. ■ Approximately 14,000 feet of new raw(untreated)water transmission piping (RWP) connecting the RIPS structure to the Lake Oswego Water Treatment Plant(WT?). ■ Expansion of the WTP from its current capacity of 16 mgd to 32 mgd,with provision for future expansion to 38 mgd. ■ Approximately 35,000 feet of new finished(treated)water piping(FWP) connecting the WIT to Lake Oswego's terminal reservoir located near Waluga Park. • A new 3.5-million gallon (MG)water reservoir at Waluga Park. ■ Replacement of Tigard's existing Bonita Pump Station(BPS)with capacity of 14 to 20 mgd. The benefits of the IGA and the water supply improvement project include the following: ■ Tigard's ownership in its water supply and decreased reliance on water supplied by Portland ■ Joint financing of the project by Lake Oswego and Tigard ■ Increases in pipe size for raw water and treated water transmission ■ Increased water treatment plant capacity ■ Increased treated water storage capacity ■ Increased pumping capacity for Tigard's water distribution system ■ Increased water transmission capacity to Tigard storage facilities Table 2 provides a more detailed breakdown of costs by year,by project,and by Sponsor. Project Funding Source Lake Oswego: The Water Fund is an enterprise fund used to account for all financial activity associated with the operation and maintenance of the city's water utility system. Water utility improvement projects are supported by water fees,which are restricted to purposes related to construction,repair,and operation of the water system. Additionally,system development charges are recovered from new development projects,but this is a minor portion of the overall funding for this program. Tigard: The Water Fund is the primary operating fund and accounts for all costs associated with the water system,including ongoing maintenance. The Water Fund is an enterprise fund which regularly transfers revenues to the Water CIP Fund which accounts for various capital improvement projects,including the Lake Oswego/Tigard Water Partnership. Tigard also assesses system development charges which are allocated to appropriate capital improvements. Tigard has intergovernmental agreements with the cities of King City and Durham and with the Tigard Water District. Funding Status: Funded Lake Oswego •Tigard Brown Water Partnership Caldwell sha��y w..z?er C.7nnpiimy carnmvr�raes 2 Lake Oswego•Tigard Water Partnership Table 2. CIP Cost Breakdown and Allocations gware,-,oar 2009/2010 2010/2011 2011/2012 2012/2013 2811f" Lake Oswego Tigard Lake Oswego Tigard Lake Oswego Tigard Lake Oswego Tigard Lake Oswego Tigard Totals - Totals To-. Totals Totah 46.471 .53% 46.47% 53.53% 46.47% 53.53% 46.47% 53.53% 46.47% 53.53% Program Administration _ Program Management,Permitting,CM $4,420,000 $2,054,000 $2,366,000 $5.]70000 <_2.142.000 52,928,000 $3.370.000 51,566,000 51.804 000 54,640.000 $2.156,000 52,484.Do0 54,640,000 52.1561100 $2,484,000 Sponsor,Land,Other Services 5770,000 $358,000 $412,000 $2,360000 $1,097,000 51,263000 $2.390,000 $1,111000 51,279000 $1.640,000 $762000 $878000 51,750,000 5813,000 $937,000 PROJECT TOTAL $5,190,000 $2,412,000 $2,778,000 $7,830,000 $3,639,000 54,191000 55,760,000 $2,677,000 53,083,000 $6,280,000 $2,918,000 $3,362000 $6,390,000 52,969000 $3,421,000 RIPS Design and Engineering $830,000 5386,000 $444,000 $550,000 $256,000 $294,000 $130,000 $60,000 $70,000 Construction $5,770,000 $2,691,000 $3,089,000 $9,900,000 54,601O 1 55,299,000 PROJECT TOTAL $830,000 $386,000 $444,000 $550,000 $256,000 $294,000 $5,900,000 $2,741,ODO $3,159,000 $9,900,000 $4,601,000 $5,299,000 RWP Design and Engineering $950,000 $441,000 $509,000 $880,000 $409,000 $471,000 Construction $6,240,000 $2,900,000 $3,340,000 $13,510,000 56,279,000 $7,232,000 _. PROJECT TOTAL $7,190,000 $3,341,000 $3,849,000 $14,390,000 $6,687,000 $7,703,000 WTP Design and Engineering $1,270,000 5590,000 $680,000 $3,040,000 $1,413,000 $1,627,000 $2,920,000 51,357,000 $1,563,000 $2,280,000 $1,060,000 $1,220,000 Construction $34,700,000 $16,125,000 $18,575,000 PROJECT TOTAL $1,270,000 $590,OOD $680,000 $3,040,000 $1,413,000 $1,627,000 $2,920,000 $1,357,000 $1,563,000 $36,980,000 $17,185,000 $19,795,000 FWP _ Design and Engineering $U j S. 1 �l� $1,030,000 $479,000 $551,000 $1,830,000 $850,000 $980,000 $1,020,000 $474,000 $546,000 Construction '0 30 $5,940,000 $2,760,000 53,180,000 $18,990,000 $8,825,000 $10,165,000 PROJECT TOTAL $1,030,000 $479,000 $551,000 $7,770,000 $3,610,000 $4,160,ODD $20,030,000 $9,299,000 $10,711,000 WR Design and Engineering $90,000 $42,000 $48,000 $480,000 $223,000 $257,000 $130,000 $60,000 $70,000 _ Construction $6,500,000 $3,021,000 53,479,000 $590,000 $274,000 $316,000 PROJECT TOTAL _.$3, _ - _ $90,000 $42,000 $48,000 $480,000 $223,000 $257,000 $6,630,000 $3,081,000 $3,549,000 $590,000 $274,000 $316,000 RPS Design and Engineering $40,000 $19,000 $21,000 $430,000 $200,000 $230,000 $320,000 $149,000 $171,000 Construction $3,030,000 $1,408,000 $1,622,000 PROJECT TOTAL $40,000 $19,000 $21,000 $430,000 $200,000 $230,000 $3,350,000 $1557,000 $1,793,000 SCADA Design and Engineering Sp Sn Construction $270,000 $125,000 $145,000 $360,000 $167,000 $193,000 PROJECT TOTAL $270000 $125,000 145,000 $3611, $167000 $193000 FY Totals $5,190,000 $2,412,000 $2,778,000 $10,020,000 $4,657,000 $5,363,000 $10,900,000 $5,067,000 $5,833,000 $37,390,000 $17,373,00 $20,017,000 $91,970,000 $42,739,000 $49,231,000 1 or 2 Lake Oswego a Tigard Table 2. (cont'd) CIP Cost Breakdown and Allocations Water Partnership shoring water connecting communities 2014/2015 2015/2016 2016/2017 Totals lake oswego Tigard Lake Oswego Ti and Lake oswe o Ti and Extended Program g g g g Total Lake Oswego Tigard Totals Tabls Totals 46,47% 53.53% 46.47% 53.53% 46.47% 53.53% 100.00% 46.47% 53.53% Program Administration Program Management,Permitting,CM S4,640.000 52 156,000 $2.484:000 $150.000 $]0,000 580,000 $-''.].330,000 $12,700,000 $14,630,000 Sponsor,Land,Other Services 51,720,000 5799,000 5921()00 $1,270,000 5590,000 5680000 $850,000 $395,000 $455,000 S12,750,000 $5,925,000 $6,825,00D PROTECT TOTAL 56,360.000 $2,955,000 $3.405000 $1.420,000 5660,000 $760,000 $850,000 $395,000 $455,000 $40.080,000 518,625,000 521455,000 RIPS Design and Engineering $1.510000 5702,000 $808,000 Construction >v.... -..•-_-_- -___-. _� __ _ $u :iii 50 $0 Si) 5t5.ti]o.000 57,282,000 $8,388,000 PROJECT TOTAL $0 $O $n 517 180,000 57,984,000 $9,196,000 RWP _ Design and Engineering $310,000 _ $144,000 $166,000 _ _ Sn $2.140,000 5994.000 $1,146,000 _ Construction $5,200,000 $2,416,000 $2,784,000 - _ 523 950,W511.594.000 $13,356,000 PROJECT TOTAL $51Sio,000 $2,560,000 $2,950,000 $27090,000 512,588.000 $14,502,OOD WTP Design and Engineering $190,000 $88,000 $102,000 SO 50 $9,700,000 5a.503090 $5,192000 _ Construction $34,700'000 $16,12S,000 $18,575,000 _ 569,400,000 53'.250.000 $37,150,000 PROJECTTOTAL $34,890,000 $16,213,000 $18,677000 579,100,000 $36.758,000 $42,342,000 FWP _ Design and Engineering _ $270,000 $125,000 $145,000 $4,150,000 $1,929,000 $2,221,000 Construction $18,990,000 $8,825,000 $10,165,000 $2,370,000 $1,101,000 $1,269,000 $46,290,000 $21,511,000 $24,779,000 PROJECT TOTAL $19,260,000 $8,950,000 $10,310,000 $2,370,000 $1,101,000 $1,269,000 $50,440,000 $23,440,000 $27,000,000 WR Design and Engineering ,' i � _ $700,000 $325,000 $375,000 Construction S0 $D SD 50 So 50 50 - $7,090,000 $3,295,000 $3,795,000 :' _ PROJECT TOTAL 71, jt] 50 $C $7. $3,Q0 $4,170,000 BPS Design and Engineering $20,000 $9,000 $11,000 50 SP SO $810,00D �_ $376,000 __ _ $434,000 Construction $3,470,000 $1,613,000 $1,657,000 $D $o 10 $6,500,000 $3,021,000 T $3,479,000 PROJECT TOTAL $3,490,000 $1,622,000 $1,868,0DO 50 i0 50 $7,310,000 $3,397000 $3,913,000 SCADA Design and Engineering 30 50 _ 5i` $0 I $0 $0 Construction $360,000 $167,000 $193,000 $60,000 $28,000 532,000 $1,050,000 $488,000 $562,000 PROJECT TOTAL $360000 $167000 $193000 $60,000 $28000 $32000 $1050000 $488000 $562,000 FY Totals $69,670,M $32,467,om $37,403,000 $3,650,000 $117691000 $2,061,000 $850,000 $395,000 $455,000 $230,000,000 $107,000,000 $123,000,000 2 of Exhibit 5-Supply Facilities Capital Improvement Program Program Area Descriptions The water supply improvements include upgrades or replacement of the existing facilities. These existing facilities and the proposed improvements are described in the following sections. Existing Facilities The existing water supply facilities either will be upgraded or replaced,as listed in Table 3. ModificationsTable 3. Facility Expandedireplaced Justification • Insufficient capacity for future water demands RIPS Replaced • Seismic vulnerability • Electrical equipment is old and worn and does not meet current standards • Insufficient capacity for future water demands pllace) RWP Replaced existing left in • Condition of existing pipeline unknown • Seismic vulnerability • Insufficient capacity for future water demands • Electrical equipment is old and worn and does not meet current standards WTP Expanded . Finished water clear well is undersized to meet regulatory finished water quality standards • Existing direct filtration process requires significant operator attention • Chlorine dosing requirements may lead to increased disinfection byproducts formation FWP Replaced Insufficient capacity for future water demands Expanded(new reservoir . Insufficient storage capacity for current and future conditions WR installed adjacent to existing) • Occasional issues with insufficient water pressure in the nearby neighborhood BPS Replaced Insufficient capacity for future water demands Proposed Facilities The proposed water supply facilities include a new RIPS, new raw and finished water pipelines, expansion of the Lake Oswego W 1P,a new WR,and a new BPS. Lake Oswego•Tigard • Water Partnership Caldwell sharingwow connecnngcommun+tes 3 Exhibit 5-Supply Facilities Capital Improvement Program RIPS A replacement RIPS will be constructed on the Clackamas River in the City of Gladstone,as shown in Figure 1. The replacement facility will pump water from the Clackamas River to water treatment facilities for subsequent distribution to users. It will have an initial capacity of 32 mgd and will be expandable to 38 mgd to supply future water demands. The new RIPS will be located adjacent to the existing intake structure and pump station,at the bottom of the Clackamas River Basin,at approximately river mile 0.8. The existing RIPS will likely be removed or abandoned. do City of Gladstone f' S 9;ytiniaa•.r�ham. [•t�wq Rr�M.yY. 9L1M7u , 4 � a Ir A. T POMr/I.�Yr11I i1Mf�AyY� O t/�slbaw�`fiwb 70 Figure 1. Proposed Location of New River Intake Pump Station Lake Oswego •Tigard Brown Water Partnership Caldwell shpnng wafty4 Exhibit 5-Supply Facilities Capital Improvement Program Raw Water Pipeline Approximately 14,000 feet of new RWP will convey water from the RIPS to the Lake Oswego WTP,located in West Linn. The new 42-inch-diameter RWP will be installed parallel to the existing 27-inch-diameter RWP and will have a capacity of 38 mgd,as compared to 16 mgd for the existing RWP. The proposed alignment for the new RWP is shown in Figure 2. n^ r N •;dl T MSI 4 � ••r.f L.�t .� �irsti C+va Aa QV.tl Iu OI•yY^�e{�r. Figure 2. Proposed RWP Alignment Lake Oswego •Tigard Brown Water Partnership Caldwell sAa���gwa!er [�nnechngcuntmun�trs 5 Exhibit 5-Supply Facilities Capital Improvement Program Lake Oswego MP The program includes provisions to upgrade and expand the existing Lake Oswego WTP. The capacity of the WTp will be increased from 16 to 32 mgd,with provisions for an ultimate expansion to 38 mgd consistent with the maximum water rights expected to be available from this source. The timing of the ultimate expansion to 38 mgd is not certain but may occur as early as 2015. The existing WTP,built in 1968,has undergone numerous upgrades to improve its performance. The State of Oregon has designated the WTP as a direct filtration plant. The WTP includes a pump-based,rapid-mix system,three contact basins,six rapid sand,dual media gravity filters,a clear well, four sludge decanting and dewatering lagoons,and associated chemical feed systems (alum, poly-aluminum chloride,powdered activated carbon,poly-electrolytes,hydrated lime,carbon dioxide,and sodium hypochlorite). The recommended plan to expand and upgrade the Lake Oswego WTP will be to reconfigure the plant to conventional filtration with pre-ozonation followed by biologically active granular media filtration. Other modifications include a new,larger clear well and finished water pump station, mechanical processes to treat process waste streams and residual solids,upgrades to chemical feed system, and miscellaneous improvements to existing buildings and site landscaping. The preliminary layout for the WTp expansion is shown in Figure 3. This layout will be revised subsequent to further discussions with WTp neighbors and the City of West Linn. Lake Oswego •Tigard Brown Water Partnership Caldwelt Sho""q NYi?2.•r 3n'jttitlil9 Co"I"?,V"r p5 6 Exhibit 5-Supply Facies Capital Improvement Program - IN RWAVAWM _ a, 11 I • e p s�u�e..new.ws - 3 s o ,uMun■e�+owwwmCuunn. m ��m� �,� , P R=-CT oEMmow aEPM LAM oWVEao WAUM"WAT4CNf KAW �a�.v+o.a�ow+ nwonwrnan�oYwwNw ALnWMTW IM RMWiq§MAW eM?MC A C+ONVENTO"ALTNEATMOUWRH LAY(W1 V l MWp"nM71ME CFA 5� urt� CLLY gB9N1@�M11CflMCIYiL /I}o OAF Figure 3. Proposed WTP Expansion Lake Oswego•Tigard Brown Water Partnership Catdwell Imom• o 7 Exhibit 5-Supply Facilities Capital Improvement Program Finished Water Pipeline A new FWP will convey treated water from the Lake Oswego WTP in West Linn to the WRs in Lake Oswego. An optional FWP may be constructed from WRs to the BPS in Tigard depending on sponsor preference of design criteria. The pipeline will be sized to convey a maximum flow of 38 mgd and will consist of a combination of new larger pipelines to carry all flow and of existing pipelines coupled with new parallel pipelines. The proposed pipeline diameters range from 18 to 48 inches along the preferred alignment. Parallel pipeline diameters depends on results from modeling efforts,condition assessment of the existing lines,and design criteria. All pipeline alignments are anticipated to be within public rights-of-way or within easements. The preferred alignment is shown in Figures 4,5,and 6. i tr _ N i, t �EwN�nwarae"Pbeor . Figure 4. Proposed FWP Alignment-Southern Segment Lake Oswego •Tigard Brown Water Partnership Caldwell shoi-gwater connecting communlm 8 Exhibit 5-Supply Facilities Capital Improvement Program .it .. _ � "• '. f • s S faesaarar.awurcp.. -}M 11�y a" Ar�¢gg Figure 5. Proposed FWP Alignment—Central Segment v f. � e•p �. i r ar, Figure 6. Proposed FWP Alignment—Western Segment Lake Oswego a Tigard Brown Water Partnership Caidwett sftr#PV womf tnnn"agcommun+rles 9 Exhibit 5-Supply Facilities Capital Improvement Program Waluga Reservoir As the WTP and water supply system capacity are expanded to serve demands forecast for Lake Oswego and Tigard,an increase in WR storage capacity of approximately 3.5 MG will be required. A new WR will be constructed alongside the existing tank to meet these additional water storage needs and will function along with the existing WR. The WR tanks will also supply the BPS through the FWP. The proposed location of the new WR is on Lake Oswego-owned land and will be northwest of the existing WR,as shown in Figure 7. Elevatwn 298' : E A�11 Proposed Waluga Reservar s r Potential Rnishad Water Poefiris AbYMI! Existirp WNuga Reservoir KNI Exist g R—hed Water Pq h6 Gty of Lake Oswego Property Figure 7. Proposed Location of New WR Lake Oswego •Tigard Brown Water Partnership Caldwell snunr,yav�ter rp�nttnngcornmunat�es 10 Exhibit 5-Supply Facilities Capital Improvement Program BPS The program includes provisions to design and construct a new BPS as part of the overall water system upgrades and expansion. The new BPS will deliver water from the FWP into the City of Tigard water system's 410 foot-elevation pressure zone. The proposed mechanical layout for the new BPS is provided in Figure 8. As the WTP and water supply system are expanded,peak BPS water supply rates will need to increase to approximately 14 to 20 mgd to serve demands forecast for the City of Tigard. The configuration,capacity,location,and age of the existing BPS are such that it will be replaced with a new facility. The existing BPS installation likely will be removed or abandoned. Alternatively, the existing facility could be retained in reserve to provide a measure of redundancy for the new BPS. The new BPS will also likely incorporate provisions for emergency water supply interconnections supporting pumped and/or gravity flow between the Lake Oswego and Tigard water systems,with potential emergency supply linkages for other area water systems. f 1 I i Figure 8. BPS Proposed Mechanical Layout Lake Oswego•Tigard Brown Water Partnership Caldwell shamsq water•mnnecting mmrnuMpes 17 +� •' � -,1"- � -z a ,pr P� f^ . •� 7 ,lint - - � +�. f l��f \ .fit� •�� L f �;. I `�.1 10 -! •. M Park 0 Ilk. Meldrum Bomar,Park Mf �•� r. Ok Willamette River xx ■ 1 w v Brown,ji, --- -•�s- Caldwell - 11 el•. . • . . f f- : • . . EXHIBIT 7 ALLOCATION OF SYSTEM IMPROVEMENT COSTS TO THE PARTIES Cost of Lake Oswego Tigard Improvements Allocation(%) Share($) Allocation(%) Share($) Project Costs* Water Treatment Plant —Existing Plant n/a 100% n/a 0% $ - -32 mgd Expansion $ 74,929,000 44.70% $ 33,493,263 55.30% $ 41,435,737 -38 mgd Expansion n/a 100%** n/a 0.00% $ - River Intake and Pump Station $ 16,392,000 24/38 $ 10,352,842 14/38 $ 6,039,158 Raw Water Pipeline $ 25,660,000 24/38 $ 16,206,316 14/38 $ 9,453,684 Finished Water Pipeline $ 43,631,975 -WTP to Laurel/Erickson $ 16,468,628 24/38 $ 10,401,238 14/38 $ 6,067,389 -Laurel/Erickson to Evergreen/Iron Mt. Blvd. $ 17,054,965 16/30 $ 9,095,981 14/30 $ 7,958,983 -Iron Mt. Blvd to Hunt Club $ 5,720,193 0% $ - 100% $ 5,720,193 -Hunt Club to Waluga Reservoir $ 6,276,621 0% $ - 100% $ 6,276,621 -Waluga Reservoir to Bonita PS $ 2,273,593 0% $ - 100% $ 2,273,593 Waluga Reservoir $ 7,378,000 2/3.5 $ 4,216,000 1.5/3.5 $ 3,162,000 Bonita Road Pumping Station $ 6,920,000 0% $ - 100% $ 6,920,000 Sub-Totals*** $ 179,073,000 46.47% $ 83,215,223 53.53% $ 95,857,777 Program Costs Program Mgmt,Permitting,Const Mgmt $ 27,350,000 46.47% $ 12,709,545 53.53% $ 14,640,455 Sponsor Labor,Legal,ROW,Permits,Testing,Admin $ 12,754,000 46.47% $ 5,926,784 53.53% $ 6,827,216 SCADA System Services $ 1,000,000 46.47% $ 464,700 53.53% $ 535,300 Utility Relocation and Charges $ 2,000,000 46.47% $ 929,400 53.53% $ 1,070,600 Construction Contingency $ 8,034,000 46.47% $ 3,733,400 53.53% $ 4,300,600 Sub-Totals $ 51,138,000 46.47% $ 23,763,829 53.53% $ 27,374,171 Total Costs $ 230,211,000 46.47% $ 106,979,000 53.53% $ 123,232,000 Project costs include design and construction and are presented in 2013 dollars(assumed mid-point of construction)assuming 3.5%annual escalation from 2010 estimate. * Second(Gmgd)expansion is currently assigned to Lake Oswego. Contract provides for potential reallocation by agreement. ** Sub-Totals for Allocations(%)and Shares is)are calculated using unescalated project costs without design.