HomeMy WebLinkAbout2016-37 Wastewater SDCs Repealing 2006-27
RESOLUTION NO. 2016-37
RESOLUTION ADOPTING NEW WASTEWATER SYSTEMS
DEVELOPMENT CHARGES, PURSUANT TO SECTION 4.20 OF THE
ASHLAND MUNICIPAL CODE, AND REPEALING RESOLUTION
2006-27.
RECITALS:
A. The current Wastewater System Development Charge was approved on 18 October 2006.
B. The City adopted a new Comprehensive Sewer Master Plan April 17, 2012 that updates the
previous master plan with new capital improvements and updated construction costs.
THE CITY OF ASHLAND RESOLVES AS FOLLOWS:
SECTION 1. The Wastewater System Development Charges report update and project list
marked as Exhibit C, is adopted effective immediately.
SECTION 2. The methodology for Wastewater System Development charges, marked as
exhibit B, is adopted, effective immediately.
SECTION 3. The System Development Charges Summary per exhibit A, is effective July
1, 2017.
SECTION 4. The existing System Development Charges project list & fee schedule for
Wastewater adopted by Resolution 2006-27 is repealed, effective July 1, 2017.
This resolution was duly PASSED and ADOPTED this d O day of
2016, and takes effect upon signing by the Mayor.
/4, A<, ~ZA
Barbara Christensen, City Recorder
SIGNED and APPROVED this 90 day of 2016.
k/.5-p~ -
o n Strom erg, Mayor
Reviewed as to form:
' icou 11ein ef
David H. Lohman, City Attorney
Resolution No. 2016-3 7 Page 1 of 2
EXIBIT A
Measurement Reimbursement Improvement Total
Residential $/Square feet $0.195 $1.833 $2:028...
Commercial- $/Plumbing fixture $29.92 $282.00 $311.92
Source: City of Ashland, Wastewater System Development Charge Update [Economic & Financial
Analysis, July 2016], Table 1.
2- Y02-Wastewater SDC Resolution.dOCXG:1legallPAULkFORMSlresolution iorm.wpd
City of Ashland
Wastewater and Water - System Development Charge Update
Methodology Summary
August 14, 2006
Exh i bit `B'
Prepared by
Shaun Pigott Associates, LLC
CITY OF ASHLAND
WASTEWATER AND WATER
SYSTEM DEVELOPMENT CHARGE UPDATE
Process
This update of Ashland's system development charges (SDC) for wastewater and water was
done in order to revise the SDCs based on recently completed facility plans for both utility
systems. Also, as part of this update process; issues related to the current SDC structure were
addressed through Ashland's SDC Committee. The Committee includes Darrel Boldt, Jac
Nickels, Greg Williams, Larry Medinger, Russ Silbiger, Kerry KenCairn, and Connie Saldana.
The SDC Committee has worked directly with staff and the City's consultant over the course of
6 meetings held between April 2005 through July 2006. The proposed revisions to the
wastewater and water SDCs reflect the Committee's unanimous recommendations to the
Ashland City Council.
For this update, the City and Committee had a number of objectives:
• Review the basis for the SDCs to ensure a consistent methodology;
• Develop a rationale and documentation for the reimbursement element of the SDC;
• Consider possible revisions to the structure or basis of the charge that might improve equity
or proportionality to demand; and
• Provide clear, orderly documentation of the assumptions, methodology, and results, so that
City staff can, by reference, respond to questions or concerns from the public
Background
The City's SDC Ordinance No. 4.20 was originally adopted in 1992 and amended in 1996. The
ordinance was designed for compliance with ORS 223.297-.314 (Oregon SDC statute) which
mandates that all jurisdictions having SDCs adopt ordinances consistent with this Oregon law.
Actual SDC calculations have been adopted through a series of resolutions including Resolution
No. 2000-29 "A Resolution Adopting New Water, Wastewater and Parks System Development
Charge Schedules." This also served to repeal the SDCs set in 1996. For water and wastewater,
the 1996 SDCs were based on fixture counts with a single-family home (17 fixtures) paying
$2,716 for water and $2,255 for wastewater.
City of Ashland - SDC Update Methodology Summary Page 1
Wastewater and Water
In 2000, this methodology was reviewed by the City through the SDC Committee for purposes of
simplifying the calculation and eliminating the perceived or real inequity of a 1200 sq ft home
paying the same SDC as a 3000 sq R home. The objective was to simplify and make the
calculation more predictable, easier to administer and to ensure that larger homes paid a
proportionately larger SDC over smaller homes. The staff recommendation was to replace, for
single family and multi family properties, the use of fixture counts with "habitable square
footage" which equals the heated square footage of a house. This figure would be submitted as
part of the plan review process and would be clear, easy to administer and charge larger houses
proportionately more for their SDC. In order to achieve this last objective, the City developed a
series of SDC brackets based on ranges of habitable square footage and assigned to these
brackets a specific cost per square foot, with the cost per square foot within each bracket going
up as the overall square footage increased. This calculation and the resulting brackets were
designed to be "revenue neutral" in terms of the overall SDC revenue generated with this
calculation vs. the 1996 fixture count approach. Under this 2000 revised approach, a "typical"
average sized home would be charged a water SDC of $3,362 ($2,716 under old SDC) and a
wastewater SDC of $21,482 ($2,255 under old SDC).
The City's revenue status for its water and wastewater SDC accounts, of which there are 5, is as
follows:
• Overall SDC revenues for water in 2005 are budgeted at $525,000; wastewater SDC
revenues are budgeted in 2005 at $438,000.
+ Water SDCs are collected and tracked under distribution, treatment and supply. '05 fund
balances are ($1,442,000) for supply, $776,000 for treatment and $2,643,000 for
distribution.
* Wastewater SDCs are collected and tracked under two categories; collection and
treatment. The adopted 2005 budget shows a fund balance of $1,439,000 for collection
and ($77,000) for treatment.
Specific SDC Committee Recommendations
• The City's use of "habitable square footage" for wastewater and water SDC calculation
differs from the generally accepted approach used in Oregon which is either meter size
and/or fixture counts. However, ORS 223 does not mandate any specific calculation
approach so long as the allocation methodology selected "promotes that future system
users contribute no more than an equitable share to the cost of existing facilities" AND
"the cost of projected capital improvements needed to increase the capacity of the
systems" is the basis for the charge. The SDC Committee did feel the use of habitable
square footage was consistent with the City's objectives for promoting smaller home
construction in the City and recommended that it be continued. However, the use of
numerous brackets in applying habitable square footage was considered
counterproductive and the Committee recommended a uniform cost per habitable square
foot.
City of Ashland - SDC Update Methodology Summary Page 2
Wastewater and water
• The City has funded the construction of its new wastewater treatment plant through food
and beverage tax receipts. This source of funding is not affected by existing wastewater
customers nor can an SDC designed to reimburse the utility (and its customers) for its
costs in providing capacity be applied when the treatment facilities are paid through a
food and beverage tax. Accordingly, the reimbursement portion of the wastewater SDC
does not include the treatment costs paid through the food and beverage tax.
• The City currently maintains 5 distinct SDC funds for wastewater and water. Under
wastewater there are SDC funds for treatment and collection. Under water, there are
separate SDC funds for distribution, treatment and supply. The Committee recommends
that these 5 funds be reduced to 2, one for wastewater and one for water. Any concerns
about loss of accountability by reducing the number of funds can be offset by annually
reconvening the SDC Committee to review the City's year-end report on SDC receipts,
expenditures and capital project list. The SDC Committee did volunteer their time for
these annual meetings.
• Ashland's 2000 water and wastewater SDCs are based on projects that were updated
from the 1996 SDC study. The City now has updated facility plans and CIPs for both
utilities. For this SDC update, each of these projects has been reviewed in terms of
purpose, cost, and allocation between existing ratepayers and SDC eligibility. The SDC
Committee spent the majority of its time reviewing the capital project lists and capacity
allocations for each of the wastewater and water projects. These individual projects and
their allocation to growth are now part of the City's SDC methodology.
SDC Methodology and Calculation
The City's uses distinct allocators for future commercial water and wastewater connections to
the systems. These allocators are meter equivalents and fixture counts respectively. The capital
costs determined to be SDC eligible were divided between the commercial and single family
residential users based on the total current meter equivalents in service for water; 78.4% are
single family residential (SFR) and 21.6% are commercial. For wastewater, the basis for
allocation was the average dry weather flow from these two customer groups; 73.64% is SFR
and 26.36% is commercial.
Under ORS 223, there are two elements to an SDC:
The reimbursement fee considers the cost of existing facilities, prior contributions by existing
users of those facilities, the value of the unused/available capacity, and generally accepted
ratemaking principles. The objective is that "future system users contribute no more than an
equitable share to the cost of existing facilities." The reimbursement fee can be spent on capital
costs or debt service related to the systems for which the SDC is applied.
City of Ashland SDC Update Methodology Summary Page 3
Wastewater and Water
City of Ashland, Oregon
Calculation of Water System Development Charges
Reimbursement Fee Derivation
Commercial &
Residential Institutional Total
Basis for Allocation To Customer Classaw
Current Equivalent'/" Meters in Service 7,114 1,960 9,074
Percentages 78.40% 21.60% 100%
Calculation of the Value of Capacity Available to Serve Growth:
Original Cost 25,859,286.21 7,124,571.41 32,983,857.62
less: Accumulated Depreciation (7,398,192.23) (2,038,298.68) (9,436,490.91)
less: Book Value of the Hosier Dam (59,779.87) (16,470.13) (76,250.00)
less: Grants - - -
less: Developer Contributions - - -
less: Principal Outstanding on Long Term Debt
Series 1977 Water General Obligation Bonds (78,399.82) (21,600.18) (100,000.00)
Series 1997 Flood and Refunding Bonds (944,717.88) (260,282.12) (1,205,000.00)
Series 2003 Water Revenue Bonds (4,139,510.69) (1,140,489.31) (5,280,000.00)
Net Rate Payer Investment in Capacity Available to Serve Growth 13,238,685.73 3,647,430.98 16,886,116.71
Calculation of Future Demand:
20 Year Forecast... Residential Habitable Area (Square Feet) 18,157,889
20 Year Forecast... Commercial Equivalent Meters 2640
Calculated Water Reimbursement Fee:
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City of Ashland, Oregon
Calculation of Wastewater System Development Ctiarges
Reimbursement. Fee Derivation
Commercial a
Residential Institutional Total
Beres for Aflocadon To Customer Classes:
20-Year Plan (Year 29023) Average Dry Weather Wastewater Flow (MGD)• 1.90 0.88 2.58
Average Dry Weather Flow Percentages 74% 26% 100%
Calculation of the Valve of Capacity Available to Serve Growth:
Original Cost $ 36,643,246 $ 13,114,425 $ 49,757,671
less: Accumulated Depreciation (4,050,653) (1,449,707) (5,500,360)
less: Grants - `
less: Contributed Capital (City food and beverage tax receipts) (8,785,659) (3,144,341) (11,930,000)
less: Principal Outstanding on Long Term Debt:
EPA/DEQ State Revolving Loan Program (fed. CFDA No. 66.458) (16,632,189) (5,952,573) (22,584,762)
Net Rate Payer Investment in Capacity Available to Serve Growth $ 7,174,745 $ 2,567,804 $ 9,742,549
Calculation of Future Demand.
20 Year Forecast... Residential Habitable Area (Square Feet) 18,167,889
20 Yeat Forecast... Commercial Fixture Counts 42,237
Calculated Sanity Sewer Reimbursement Fee:
`•.J>..,'~~4,.>,-.. -~-.:~~L.--•- ~+~F~9`< ~,0,~:3s~~x`:27+_:. •.~._e~s,+~Ct:.,,4t•i~i+N.:r•~,~.i~~~• -r.+n~'~~
City of Ashland - SDC Update Methodology Summary Page 4
Wastewater and Water
i
The improvement fee portion of the SDC is based on the cost of planned future facilities that
expand the system's capacity to accommodate growth or increase its level of performance. In
developing an analysis of the improvement portion of the fee, each project in the City's capital
improvement plan was reviewed to exclude costs related to correcting existing system
deficiencies or upgrading for historical lack of capacity. The improvement SDC is calculated as a
function of the estimated number of additional units to be served by the City's facilities over the
planning period.
City of Ashland, Oregon
Calculation of Water System Development Charges
Improvement Fee Derivation
Commercial &
Residential Institutional Total
Basis for Allocation To Customer Classes:
Current Equivalent'/." Meters in Service 7,114 11960 9,074
Percentages 78.40% 21.60% 100°A
Calculation of the Value of Capacity Available to Serve Growth.
Future Project Costs Attributable to Growth:
TAP beyond Talent $ 3,189,893 $ 878,857 $ 4,068,750
Transmission Line (Reeder to Plant) 771,215 212,480 983,696
Hosier Dam Stability Analysis - - -
Lost Creek Water Rights (additionat) 391,999 108,001 500,000
Hosier Dam Security and Telemetry 29,400 8,100 37,500
Sludge Lagoon Improvements 9,408 2,592 12,000
Water Treatment Plant Filter Improvements 47,040 12,960 60,000
Review Chlorin'-Hypochloride 58,800 16,200 75,000
Plant and Process Improvements 188,160 51,840 240,000
Filters 7 and 8 New 343,979 94,774 438,750
Waterline Replacement - Granite 108,388 29,852 138,250
Fire Flow Distribution Reservoir 194,040 53,460 247,500
Crowson-Airport-E. Main Loop 38,416 10,584 49,000
Replace Steel Line Terrace; Irrigation Ditch to Lowe 27,440 7,560 35,000
Upsize Lines at Maple, Scenic & Chestnut 49,000 13,500 62,500
Replace Line Strawberry to Grandview 19,600 5,400 25,000
Upsize Mains on Wimer-Sunnyview 49,000 13,500 62,500
New Line Benson Loop 38,416 10,584 49,000
Upsize Lines - Euclid, Prospect, Fem, Roca 53,900 14,850 68,750
Upsize Mains on Tolman Creek 73,500 20,250 93,750
Replace Steel Line on Siskiyou 31,360 8.640 40,000
Internal 4" Line Upsizing 137,200 37,800 176,000
Other Line Upsizing 147,000 40,500 187,500
Engineering Cost 1,045,187 287,963 1,333,150
Construction Mgmt Contingency 1,352,757 372,702 1,725,459
Total Growth Related Costs $ 8,395,096 $ 2,312,959 $ 10,708,055
Calculation of Future Demand:
20 Year Forecasted Growth in Residential Habitable Area (Square Feet) 4,476,432
20 Year Forecasted Growth in Equivalent Meters 650
Calculated Water lmprovementi= e
City of Ashland - SDC Update Methodology Summary Pages
Wastewater and Water
City of Ashland, Oregon
Calculation of Wastewater System Development Charges
Improvement Fee Derivation
Commercial &
Residential Institutional Total
Basis for Allocation To CustonwClasses:
20-Year Plan (Year 2023) Average Dry Weather Wastewater Flow (MGD)* 1.90 0.68 2.58
Average Dry Weather Flow Percentages 73.64% 26.36% 100%
Calculation of the Value of Capacity Available to Serve Growth:
Future Project Costs Attributable to Growth:
Now Membrane Sections $ 32,219 $ 11,531 $ 43,750
Process Improvements 36,822 13,178 50,000
Thermal Improvements 92,054 32,946 125,000
North Mountain Park 231,977 83,023 315,000
Wightman to Tolman 187,799 67,209 255,000
Collection System Master Plan Update 84,690 30,310 115,000
Granite Street 12,151 4,349 16,500
North Main Pump Station Replacement 24,855 8,895 33,750
Walnut, Grant- Wimer 17,453 6,247 23,700
Street Line UpsizelReplacement 100,523 35,977 136,500
Oak Street Lithia to A 30,930 11,070 42,000
Mountain Ave. llpsize 42,345 15,155 57,500
Willow Street Upaize and Replace 19,147 6,853 26,000
Hersey Street Upsize and Replace 16,938 6,062 23,000
In-House Une Replace and Upsize 68,372 31,628 120,000
Collection System Improvements 110,465 39,535 150,004
Engineering Cost 317,403 113,597 431,000
Construction Mgmnt & Contingency 397,251 142,174 539,425
Total Growth Related Costs $ 1,843,387 $ 659,738 $ 2,503,125
Calculation of Future Demand:
20 Year Forecasted Growth in Residential Habitable Area (Square Feet) 4,478,432
20 Year Forecasted Growth in Commercial Fixture Counts 10,407
Calculated Sanitary Sewer lm vement Fee: _
~..k~ `5~~'T1J.... +.£?YV..---....._.. ot?~IIF"afJd~a~.?Lt_~`I•._..
Sousa: City of Ashland, Sanitary Sewer Collection System Master Plan, Final Report, January, 2005, Table 25 - Summary of
Population and Flow Projections
i
City of Ashland - SDC Update Methodology Summary Page 6
Wastewater and Water
Based on the SDC Committee's review of the water and wastewater project lists and the
allocation methods felt to be most consistent with the City's policy objectives, the following are
the Committee's SDC recommendations:
Wastewater SDC
Current - SDC is $2,707 for a "typical" 2,000 habitable square foot home
Proposed - SDC would be $1,613 for a "typical" 2,000 habitable square foot home
This reduction of the SDC for wastewater is due to a significantly downsized allocation of
capital facility costs to growth and the removal of the treatment plant funded through food and
beverage tax receipts from the reimbursement element of the SDC. It should be highlighted
that the food and beverage tax is due to sunset in 2010. If these tax revenues are no longer
available to fund the wastewater treatment plant, the debt service for this facility would need to
be paid through a combination of increased wastewater rates and increased SDCs.
The SDC for commercial properties will be based on fixture counts (number of toilets, sinks,
etc) at a rate of $124 per fixture. A commercial property having, as an example, 16 fixtures
would pay a wastewater SDC of $1,984.
Water SDC
Current - SDC is $3,667 for a "typical" 2,000 habitable square foot home
Proposed SDC would be $5,208 for a "typical" 2,000 habitable square foot home
This increase in the SDC results from evaluation of each project identified in City's water CIP
and a more accurate allocation of these project costs between growth and current water utility
customers.
The SDC for commercial properties will be based on meter size and flow factor/meter
equivalence as established by the American Water Works Association (AWWA) standard for
cold water meters - displacement type. As an example a V meter will pay $4,940; 1" meter
$8,250; 1.5" meter; 1.5" meter $16,450.
City of Ashland - SDC Update Methodology Summary Page 7
Wastewater and Water
RESOLUTION NO. 2006- L!
A RESOLUTION ADOPTING THE ANNUAL BUDGET AND MAKING APPROPRIATIONS
The City of Ashland resolves that the 2006-2007 Fiscal Year Budget,
now on file in the office of the City Recorder is adopted. The amounts
for the fiscal year beginning July 1, 2006, and for the purposes shown
below are hereby appropriated as follows:
SECTION 1.
GENERAL FUND
Administration Department $ 253,780
Administrative Services - Municipal Court 395,035
Administrative Services - Social Services Grants 115,360
Administrative Services - Economic & Cultural Grants 504,650
Administrative Services - Miscellaneous 7,000
Administrative Services - Band 61,554
Police Department 5,325,774
Fire and Rescue Department 9.262.372
Public Works - Cemetery Division 355,375
Community Development - Planning Division 2,313,591
Community Development- Building Division 801,756
Transfers 500
Contingency 400,000
TOTAL GENERAL FUND 15,796,747
COMMUNITY DEVELOPMENT BLOCK GRANT FUND
Personal Services 35,485
Materials and Services 385,765
Other Financing Uses (Werfund Loans) 215,000
TOTAL CDBG FUND 636,250
STREET FUND
Public Works - Street Operations 4,060,268
Public Works - Storm Water Operations 739,870
Public Works - Transportation SDC's 274,850
Public Works - Storm Water SOC`s 47,500
Public Works - Local Improvement Districts 343,498
Contingency 153,000
TOTAL STREET FUND 5,618,986
AIRPORT FUND
Materials and Services 111,532
Debt Service 35,173
Contingency 5,000
TOTAL AIRPORT FUND 151,705
CAPITAL IMPROVEMENTS FUND
Personal Services 152,407
Materials and Services 394,750
Capital Outlay 3,056,000
Transfers 905,434
Other Financing Uses (Interfund Loans) 530,000
Contingency 50,000
TOTAL CAPITAL IMPROVEMENTS 5,088,591
DEBT SERVICE FUND
Debt Service 1,656,170
TOTAL DEBT SERVICE FUND 1,658.170
WATER FUND
Electric - Conservation Division 172,005
Public Works - Forest Lands Management Division 196,000
Public Works - Water Supply 3,020,879
Punic Works - Water Treatment 1,400,354
Punic Works - Water Distribution 3,264,112
Public Works - Reimbursement SDC's 467,670
Public Works - Improvement SDC's 702,560
Public Works - Debt SDC's 123,932
Debt Services 544,457
Contingency 152,000
TOTAL. WATER FUND 10,043,989
WASTEWATER FUND
Public Works - Wastewater Collection 2,240,657
Public Works - Wastewater Treatment 2,022,260
Public Works - Reimbursement SOC's 192,160
Public Works - Improvement SDC's 108,090
Debt Services 1,793,196
Contingency 149,000
TOTAL WASTEWATER FUND 6,505,363
ELECTRIC FUND
Electric - Conservation Division 976,645
Electric - Supply 6,557,504
Electric - Distribution 5,189,851
Electric - Transmission 1,048,600
Contingency 361,000
TOTAL ELECTRIC FUND 14,153,600
TELECOMMUNICATIONS FUND
IT - Customer RelationaXPromotions 223,608
IT - Cable Television 478,746
IT - Internet 776,310
IT - High Speed 301,179
Contingency 100.000
TOTAL TELECOMMUNICATIONS FUND 1,879,843
CENTRAL SERVICES FUND
Adminlstratton Department 998,925
Administrative Services Department 1,919,524
IT - Computer Services Division 982,388
City Recorder Division 269,768
Public Works - Administration and Engineering 1,488,463
Contingency 171,000
TOTAL CENTRAL SERVICES FUND 5,830,068
INSURANCE SERVICES FUND
Personal Services 400,000
Materials and Services 661,291
Contingency 32,000
TOTAL INSURANCE SERVICES FUND 1,093,291
EQUIPMENT FUND
Personal Services 266,476
Materials and Services 519,955
Capital Outlay 1,415,000
Contingency 42,000
TOTAL EQUIPMENT FUND 2,243,431
CEMETERY TRUST FUND
Transfers 19,000
TOTAL CEMETERY TRUST FUND 19,000
PARKS AND RECREATION FUND
Parks Division 3,868.250
Recreation Division 962,200
Golf Division 416,000
Transfers 110,000
Contingency 35,000
TOTAL PARKS AND RECREATION FUND 5,391,450
YOUTH ACTIVITIES LEVY FUND
Personal Services 96,000
Materials and Services 2,335,361
TOTAL YOUTH ACTIVITIES LEVY FUND 2.431,361
PARKS CAPITAL IMPROVEMENTS FUND
Capital outlay 331,000
TOTAL PARKS CAPITAL IMP. FUND 331,000
TOTAL APPROPRIATIONS $ 78,870,846
SECTION 2. This Resolution takes effect upon signing by the Mayor.
This resolution was read by title only in accordance with Ashland Muncipial Code
§ 2.04. 0 and duly PASSED and ADOPTED this %,P day of !L"Vw, 2006.
6arbara Christensen, City Recorder
Signed and Approved on this day of June, 2006.
John . Morrison, Mayor
Appro d as a
chael . ra 11, C Attorney
EXH I BIT C
City of Ashland, Oregon
WASTEWATER:
CHARGE UPDATE
DEVELOPMENT SYSTEM
Prepared by:
ECONOMIC & FINANCIAL ANALYSIS
Vancouver, WA
July 2016
ECONOMIC & FINANCIAL ANALYSIS
City of Ashland - Wastewater SDC Update July 2016
CONTENT
INTRODUCTION 1
SUMMARY 1
CURRENT WASTEWATER SDC 1
UPDATED WASTEWATER SDC 3
Reimbursement Fee 4
Improvement Fee 5
Calculation of SDC Schedules 8
Current Methodology 8
Alternative Methodology 9
ANNUAL ADJUSTMENT FOR INFLATION 13
APPENDICES 14
Appendix A: Comparison of Ashland's Wastewater SDCs with Select Oregon Municipalities 14
Appendix B: Fixed Assets of the Wastewater System 15
TABLES
Table 1 Current and updated Wastewater SDC ........................................................................................1
Table 2. Current Wastewater SDC 2
Table 3. 2012 and 2030 Design Capacities and Sewage Flows 3
Table 4. Cost Basis for Reimbursement Fee ...............................................................................................5
Table 5. Allocation of Future Capital Improvements to Growth 6
Table 6. Cost Basis for Improvement Fee ....................................................................................................8
Table 7. Proposed SDC-Current Methodology ..........................................................................................9
Table 8. Meter Capacities and Equivalencies ...........................................................................................10
Table 9. Average Winter Water Usage-Single Family vs. Multifamily Residence ..................................11
Table 10. Proposed SDC-Alternative Methodology .................................................................................13
ECONOMIC & FINANCIAL ANALYSIS Page
City of Ashland - Wastewater SDC Update July 2016
INTRODUCTION
The City of Ashland contracted with Keller & Associates, Inc. to develop a comprehensive master plan for
the wastewater utility. As part of that planning effort, Keller & Associates retained Economic & Financial
Analysis (EFA) to update the City's wastewater system development charge (SDC). Keller's final
Comprehensive Sanitary Sewer Master Plan for the City was adopted by City Council on May 15, 2012.'
The City's current wastewater SDC consists of both a reimbursement fee and an improvement fee as
allowed by Oregon state law (ORS 223.297-223.314, as amended). This SDC update relies on Keller's
2012 Master Plan to update both fees.
SUMMARY
In this report, EFA provides two options for updating the wastewater SDC: one based on the current
methodology and an alternative based on the capacity of the water meter installed. Both methodologies use
the SDC for an average single-family residence as the basis for the SDC-i.e., all developments are assessed
an SDC proportionate to the SDC for a single-family residence, which is the same for both methodologies.
The SDC Task Force recommended updating the current methodology and not changing to the meter-size
methodology. Table 1 shows the current and updated Wastewater SDC which increases 150% for
residential developments and 151 % for commercial developments.
Table 1 Current and updated Wastewater SDC
Current SDC updated SDC Change
Reimburse- Improve- Reimburse- Improve-
Measurement ment ment Total ment ment Total $ % A
Residential $/Square feet $0.40 $0.41 $0.81 $0.195 $1.833 $2.028 $1.22 150%
Average Residential SDC^ $800 $820 $1,620 $389 $3,665 $4,054 $2,435 150%
Cornmercialt $/Plumbing $60.79 $63.39 $124.18 $29.92 $282.00 $311.92 $187.74 151%
fixture
CURRENT WASTEWATER SDC
The current schedule of SDCs was last updated in 2006. The current methodology relies on separate
forecasts of wastewater flows for residential and commercial uses, and it assumes the following:
(a) For residential development, a relationship between sewage flow and the size of the residence
as measured by square feet of habitable (heated) area.
Further references to the Keller master plan appear in this report as the 2012 Master Plan.
ECONOMIC & FINANCIAL ANALYSIS Page 1
City of Ashland -Wastewater SDC Update July 2016
(b) For commercial developments, the number and type of plumbing fixture units2 bear a direct
relationship to the amount of sewage flow.
The current residential SDC is based on the assumption that new residences have an average of 2,000 square
feet of habitable space and thirteen plumbing fixtures. As shown in table 3, this average is maintained
proportionately throughout the schedule of SDCs. This method does not distinguish between single-family
and multifamily residences. For example, a 1,000-square-foot apartment pays the same SDC as a 1,000-
square-foot single-family residence, and both pay one-half as much as a 2,000-square-foot residence.
Table 2. Current Wastewater SDC
Current SDC
Reimbursement Improvement Total SDC
Residential
$/square foot $0.40 $0.41 $0.81
square feet^
1,000 $400 $410 $810
1,500 600 615 $1,215
2,000- 800 820 $1,620
2,500 13000 1,025 $2,025
3,000 13200 1,230 $2,430
3,500 1,400 1,435 $2,835
Commercial
$/fixture unit $61 $63 $124
^ Residential SDCs are assessed in increments of 1 square foot. This schedule
includes only a few examples of residential SDCs based on a range of dwelling sizes.
t Average single-family residence.
This method of assessing SDCs raises several issues:
1. The 2012 Master Plan provides a forecast of sewage flows and determines the capacity of the
wastewater system. It does not provide a forecast of habitable square feet or separate capacity by
residential and commercial use-both of which are key components of the current methodology.
2. Although a rough correlation likely exists between housing size and the number of fixture units, an
exact correlation has not been established.
3. As we show later in the report, apartments produce significantly less sewage now than single-
family residences; however, the SDC per size of residence is the same for all types of residences.
z The international, national, and state plumbing codes establish an average discharge of wastewater from various types of plumbing
fixtures. For example, a bathroom sink is rated as one fixture unit, while a modern flush toilet in a residence is rated as two fixture
units.
ECONOMIC & FINANCIAL ANALYSIS Page 2
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City of Ashland - Wastewater SDC Update July 2016
4. SDCs are assessed when a property owner or developer applies for a building permit. Permits are
taken for new construction and major remodels. This may not capture the change in fixture types
and numbers for commercial uses and may miss soune residential remodels that increase the square
footage of habitable area (e.g., converting a garage or storage space to living space).
5. It is difficult to track installation of additional fixture units and livable square footage, and changes
in the type of development-e.g., residential to commercial, or mixed residential/commercial
developments.
These issues are acceptable limitations on the City's ability to equitably assess the SDC. Using fixture units
is a common method used by Oregon municipalities. Size of residences is also commonly used. However,
we present an alternative that is easier to apply and maintains a similar degree of equity among customer
classes by using the capacity of the water meter to be installed at the development.
UPDATED WASTEWATER SDC
The City's sewer system is comprised of two primary components: a collection system and a treatment
system. The collection system was built in part by private land developers and contributed to the City and
in part by the City and financed with sewer rate revenues. The City's fixed asset records (see appendix B)
show that the wastewater treatment plant (WWTP) comprises nearly 76% of the total book value of the
sewer system. The remaining 24% is composed of the land the WWTP occupies and portions of the
collection system that were publicly financed. Most of the public's investment in the sewer system is in the
WWTP, and about 83% of the cost of the projects listed in the 2012 Master Plan are for the WWTP. The
measure of sewage service capacity we use to develop this update of the SDC is based on capacities at the
WWTP.
Table 4 shows the five major components of the WWTP, their current (2012) and future (2030) capacities,
and current and future sewage flows. Each of these components is designed to meet one of four flow
conditions: peak hour, maximum month, peak day, and maximum dry month flows. Together these five
components will meet the forecast sewage flows in all seasons of the year for a forecast population of
24,716 in 2030. The flows and capacities are measured in millions of gallons per day (mad).
The sewer system is fundamentally designed to carry the sewage load from customers' plumbing systems,
which is most accurately measured by the maximum dry month flow. The maximum dry month capacities
are therefore used as the basis for calculating the SDC. Peak flows correlate with peak periods of
precipitation (inflow) and high ground water (infiltration) that usually occur in winter during periods of
heavy rain or runoff caused by snowinelt.3 These flows are at a low during the maximum dry month period.
Table 3. 2012 and 2030 Design Capacities and Sewage Flows
Flow (mgd) Capacity (mgd)
2012 2030 2012 2030
Design Current Future Current Excess Future Increased
Plant process Condition Flow Flow Capacity Ca acity Capacity ___Capacity
3 2012 Master Plan, pp. 4-6.
ECONOMIC & FINANCIAL ANALYSIS Page 3
City of Ashland - Wastewater SDC Update July 2016
Headworks Peak Hour 10.5 11.81 13.50 3.00 13.50 -
Oxidation ditch Max Month 3.6 4.24 3.76 0.16 5.64 1.88
Clarifiers Peak Day 7.1 8.03 11.87 4.77 11.87 -
UV disinfection Peak Day 7.1 8.03 11.00 3.90 11.00 -
Membranes Max Dry Month 2.7 3.18 2.87 0.17 3.18 0.31
In the next two sections, we describe the two-step process used to update the SDC.
(1) In step one, we calculate the base reimbursement fee and base improvement fee. Both fees are
expressed in dollars per gallon (S/gallon) of sewage treatment capacity.
(2) In step two, we assess the SDC using two methodologies: the current methodology, which is
based on the type of development, and an alternative methodology that is based on water meter
size and average residential usage.
Reimbursement Fee
The intent of the reimbursement fee is to charge new developments the cost of using the existing assets.
The value of these assets is derived from two factors: the value of the fixed asset and a measure of the
asset's excess capacity. The base reimbursement fee is derived from the current book value of the sewer
system and the current maximum dry weather capacity of the WWTP.
Value of Existing Assets
We use the City's current methodology to value the existing fixed assets summarized in table 5. This
method uses the depreciated the original cost of the assets (book value), which is used as the cost basis
for calculating the reimbursement fee. This is the most conservative method used by Oregon
municipalities to determine a cost basis.
In 2002 and 2003, the City made major improvements to the WWTP. These assets are not included in
the reimbursement fee, because the City borrowed money to construct these assets and elected to repay
the loan with revenues from its food and beverage tax rather than sewer rate revenues.
The balance of the existing assets was financed by the City's rate payers prior to 2002 and after 2003.
These assets provide the basis for the reimbursement fee. As shown in table 5, the original cost basis
of these assets is approximately $15.18 million. The depreciated book value of approximately $8.87
million is used as the cost basis to calculate the reimbursement fee.
Excess Capacity of Existing Assets
Engineers design the sewage collection system to carry the maximum flow of sewage for each sub-
basin the system serves. The capacity of the WWTP is the upper limit on how much sewage can flow
through the collection system. The 2012 Master Plan lists this capacity as 2.87 mad, while sewage
flows are about 2.7 mad on average (a net reduction over the five-year study period).' The excess
capacity of the existing system is therefore 0.17 mad or about 6% of the total capacity.
As shown in table 5, the base reimbursement fee is calculated by dividing the book value of the existing
assets ($8.87 million) by the capacity of the assets (2.87 mad). The result is a base reimbursement fee of
a 2012 Master Plan, Table 4.3, pp. 4-3.
ECONOMIC & FINANCIAL ANALYSIS Page 4
City of Ashland - Wastewater SDC Update July 2016
$3.09/gallon. This will be applied to all future development based on the development's expected sewage
flow, which we discuss following the discussion of the base improvement fee.
Table 4. Cost Basis for Reimbursement Fee
As of June 30, 2011
Original Accumulated
Depreciated Original Costs Cost Basis Depreciation Book Value
Total Existing Fixed Assets" $49,410,520 ($1-2,911,740) $36,498,781
less 2002-2003 IVWTP assetst $34,231,375 (56,604,878) $27,626,497
Balance of Assets (Cost Basis for Reimbursement Fee) $15,179,145 (S6,306,862) $8,872,284
Average Dry Weather Flow (gpd) 2,870,000
Base Reimbursement Fee (Vgallon) $3.09
Source: City of Ashland fixed assets records (see appendix B).
^ Assets placed in service before 1970 were discounted to zero. Land values are at their original purchase price.
t The 2002-2003 improvements to the wastewater treatment plant were financed by the City's food and beverage tax. These assets
are not included in the reimbursement fee.
Improvement Fee
The base improvement fee is derived from the schedule of capital improvements listed in the 2012 Master
Plan' and the resulting increase in capacity. For purposes of this update, the fee is based on projects that
will be needed over the next twenty years (see table 6), assuming a growth rate of 0.7% per year. Priority 3
projects that are scheduled for completion after 2030 are deemed too speculative to include in this SDC
update.
In the 2012 Master Plan, the engineer allocated the cost of capital improvements to growth and to the
current City's sewer customers. Of the $23.369 million of planned improvements (2012 dollars),
5 In addition to depreciated original cost, the cost basis for the reimbursement fee can also be determined using the current estimated
replacement cost or the current replacement cost adjusted for depreciation. These alternatives would increase the cost basis from
$8.87 million to $27.96 million or to $14.87 million, respectively.
Alternative Cost Basis for Reimbursement Fee 2011$
2011 Inflated Accum. Net Inflated
Depreciated Replacement Cost Cost basis Depreciation Book Value
Value of existing fixed assets $75,388,238 (522,242,700) $53,145,538
less 2002-2003 WTVTP assets $47,427,300 (59,150,500) $38,276,800
Balance of assets (Cost Basis for Reimbursement Fee) $27,960,938 (S 13,092,200) $14,868,738
Average dry weather flow (gpd) 2,870,000 2,870,000
Cost per gallon $9.74 $5.18
tThe 2002-2003 improvements to the wastewater treatment plant were financed by the City's food and beverage tax. These
assets are not included in the reimbursement fec.
6 2012 Master Plan, table 14. 1, pp. 14-4.
ECONOMIC & FINANCIAL ANALYSIS Page 5
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City of Ashland - Wastewater SDC Update July 2016
approximately $9.017 million is to expand capacity for future residential and commercial growth, which is
the cost basis for the improvement fee. The remaining approximately $14.352 million is to repair and
replace existing components of the treatment and collection systems that are expected to fail during the
twenty-year forecast period or to be necessary to meet compliance with federal and state water quality
standards. These improvements will be paid from sewer rates and taxes.
Once all the improvements are completed over the forecast period, the wastewater system will have a total
capacity of 3.18 mgd-an increase of 310,000 mgd. The base improvement fee is the cost of this new
capacity or $29.09 per gallon (see table 7).
Table 5. Allocation of Future Capital Improvements to Growth
Primary Total Growth Apportionment City's
Project Description Purpose Estimated Cost % Cost Est. Portion
Priority 1 Improvements (2012 -2020)
Wastewater Treatment
1 Outfall relocation/fish screen Compliance $856,000 15% $128,400 $727,600
2 Shading---capital cost + first
Six years of O&M Compliance $1,646,000 15% $246,900 $1,399,100
j 1_ ~'lt?!lito l{i{(?il%iiICC IIo fe: t W11'0 S0 'so
4 Backup (portable) pump Capacity $60,000 0% $0 $60,000
5 Membrane replacement (two trains) Replacement $1,248,000 0% $0 $1,248,000
6 Oxidation ditch shell Capacity $4,000,000 39% $1,560,000 $2,440,000
7 RAS pump replacement Capacity $90,000 20% $18,000 $72,000
8 Wastewater master plan update Update $125,000 100% $125,000 $0
Wastewater Collection System
I A 18" and 24" parallel trunkline along creek Capacity $1,248,000 70% $873,600 $374,400
1B 15" main along Mountain Ave. Capacity $118,000 25% $29,500 $88,500
1 C Oak St. 24" trunkline Capacity $40,000 15% $6,000 $34,000
1D A St. 15" train Capacity $522,000 10% $52,200 $469,800
I E 12" main along railroad Capacity $275,000 57% $156,750 $118,250
IF 12" Siskiyou Blvd. main Capacity $73,000 46% $33,580 $39,420
1G Miscellaneous upgrades Various $335,000 10% $33,500 $301,500
1H Portable flow meters Operations $60,000 0% $0 $60,000
1J Storm water inflow study (2012-2013) Capacity $60,000 0% $0 $60,000
Total Priority I Improvements $10,756,000 $3,263,430 $7,492,570
Priority 2 Improvements (2020-2030)
Wastewater Treatment
I Membrane replacement Capacity/
(larger membranes) replacement $4,659,000 40% $1,863,600 $2,795,400
2 Membrane feed pumps and
piping replacement Capacity $507,000 80% $405,600 $101,400
3 Additional UV reactors and
Upgrade control panels Capacity $351,000 100% $351,000 $0
4 Mechanical bar screen replacement Replacement $496,000 20% $99,200 $396,800
ECONOMIC & FINANCIAL ANALYSIS Page 6
City of Ashland - Wastewater SDC Update July 2016
Primary Total Growth Apportionment City's
Project Description Purpose Estimated Cost % Cost Est. Portion
5 Grit removal system replacement Replacement $801,000 20% $1601200 $640,800
6 Oxidation ditch internals Capacity $2,150,000 100% $2,150,000 $0
Existing oxidation ditch
7 Equipment replacement Replacement $1,551,000 0% $0 $1,551,000
8 Clarifier mechanism replacement Replacement $324,000 0% $0 $324,000
Replace Ashland creek lift station
9 Pumps with larger pumps Capacity $353,000 80% $282,400 $70,600
8 Wastewater master plan update Update $125,000 100% $125,000 $0
Wastewater Collection System
2A 12" pipeline on Nevada St. Capacity $217,000 38% $82,460 $134,540
2B 8" slope correction on Walker Ave. Operations $168,000 28% $47,040 $120,960
2C 12" pipeline on Wightman St. Capacity $172,000 66% $113,520 $58,480
2D Miscellaneous upgrades Various - $739,000 10% $73,900 $665,100
Total Priority 2 Improvements $12,613,000 $5,753,920 $6,859,080
Total All Wastewater Improvements $23,369,000 $9,017,350 $14,351,650
Source: 2012 Master Plan, table 14.1. Priority 3 projects are not included in this update of the SDC and are therefore omitted from this
table.
t! ECONOMIC & FINANCIAL ANALYSIS Page 7
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City of Ashland - Wastewater SDC Update July 2016
Table 6. Cost Basis for Improvement Fee
Cost Basis
Cost Basis, Priority 1 and 2 projects $9,017,350
Average Dry Weather Flow (gpd)
Current 2,870,000
Growth 310,000
Future Design, Priority 1 and 2 Projects 3,180,000
Base Improvement Fee (Vgallon) $29.09
Together, the base reimbursement and improvement fees total $32.18/gallon.
Next, we discuss how the base fee can be applied to a specific residential or commercial development using
the current methodology or the alternative methodology.
Calculation of SDC Schedules
Current Methodology
The current SDC for both residential and commercial development is based on an average residence, which
the City defines as having 2,000 square feet of habitable area and thirteen plumbing fixture units. The cost
basis for residential development is $/square foot, while the commercial cost basis is $/fixture unit. This
equates to a cost of $2.02 per square foot ($4,054 divided by 2,000) and $312/fixture unit ($4,054 divided
by thirteen).
According to the City's 2011 wastewater utility billing records, the average winter usage for a single-family
household on a 5/e" x 3/4" meter is 3,780 gallons per month. At an average of 2.1 persons per household (2010
US Census), sewage production is approximately 60 gallons per capita per day.
The current methodology uses this residential average to calculate both the residential base fee (per square
foot) and the commercial base fee (per plumbing fixture unit).
Residential Base Fee ($/Square Foot)
The SDC of $4,054 divided by 2,000 square feet results in a fee of $2.028 per square foot of habitable
residential area-$0.195/square foot for reimbursement and $1.832/square foot for improvement.
Commercial Base Fee ($/Plumbing Fixture Unit)
The SDC of $4,054 divided by thirteen plumbing fixtures per 2,000-square-foot residence is used to
calculate the base fee per plumbing fixture. The result is $312/fixture: $30/fixture for the
reimbursement fee and $282/fixture for the improvement fee.
Table 8 shows the schedule of SDCs for the current methodology and applies it to a sampling of residence
sizes. For residential uses, the SDC varies proportionately to the size of the residence: e.g., a 1,000-square-
ECONOMIC & FINANCIAL ANALYSIS Page 8
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City of Ashland - Wastewater SDC Update July 2016
foot residence pays half as much as a 2,000-square-foot residence. For commercial uses, the SDC varies
with the number and type of fixture units installed in the development.
Table 7. Proposed SDC--Currant Methodology
Reimbursement Improvement Total SDC
Residential SDC
$/square foot $0.195 $1.832 $2.027
# square feet
1,000 $195 $1,833 $2,027
1,500 $292 $2,749 $3,041
2,000^ $389 $3,665 $4,054
3,000 $584 $5,498 $6,081
3,500 $681 $6,414 $7,095
Commercial
$/fixture unit $30 $282 $312
^ Average single-family residence.
Alternative Methodology
The alternative methodology uses meter size (which determines a user's access to the City's water and
sewer systems) as the basis for calculating the SDC, and residential usage is adjusted by type of residence:
single- or multifamily. Housing type is distinguished by the number of residences on a meter-e.g., one
residence per meter (single family, condominium) versus multifamily residences with a shared meter.
This method of assessing SDCs is based on the equivalent a single-family resident's average water usage
and sewage production) served by the smallest size water meter, W, x 3/4". The equivalent number of V x
3/4" meters for larger size meters is used to determine the SDC for larger size meters. Before we develop the
SDC based on meter size, we discuss the capacities of various types and sizes of water meters and the
relationship between single and multifamily housing and meter sizes.
Water Meter Size and Type
The City currently installs a combination of positive displacement and turbine type meters. In general,
meters 1" and less in diameter are displacement meters, while those larger than 1" are turbine meters.
All %11 x 3/4" meters are positive displacement meters.
Table 9 shows the capacity of each meter size in gpm and the equivalent number of %11 x 3/4" meters.
For example, a 1 " displacement meter has 2.67 times the capacity of an equivalent %11 x 3/4" displacement
meter. The 1" turbine meter has even more capacity-3.33 times that of a W x 3/4" displacement meter.
These meter equivalencies are used to determine the SDC by meter size.
ECONOMIC & FINANCIAL ANALYSIS Page 9
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City of Ashland - Wastewater SDC Update July 2016
Table 8. Meter Capacities and Equivalencies
Safe Maximum Operating Capacity
(gpm)
Displacement Turbine
Safe Maximum Safe Maximum
Operating Equivalent Operating Equivalent
Meter Size Capacity %1' x 3/a" meters Ca acity %11 x 3/4" meters!
5/a x 3/4 15 1.00 NIA 1.00
3/4 25 1.67 30 2.00
1 40 2.67 50 3.33
11/2 50 3.33 100 6.67
2 100 6.67 160 10.67
3 150 10.00 350 23.33
4 200 13.33 600 40.00
6 500 33.33 1,250 83.33
g - - 1,800 120.00
Source: American Water Works Association, Table 5-3: Test Requirements for New, Rebuilt, and Repaired Cold-Water, Water
Meters-Selection, Installation, Testing, and Maintenance (AWWA, 4th ed., 1999). The basic residential meter (the smallest and
most commonly installed) is a V x 3/4" diameter meter (i.e., inlet from the main water line and 3/4" outlet to the building).
About 90% of the City's installed meters are %11 x 3/4" displacement meters, .and at present, the most
frequently installed residential meter is a W, x 3/4" displacement meter. The next available size is a 1"
displacement meter. On average, residential customers with larger meters use more water and produce more
sewage than those with smaller meters. These larger meters demand a higher level of service from both the
water and sewer utilities than customers with W, x 3/4" meters.
The City does not currently offer a 3/4" displacement or turbine meter. It may be an appropriate option,
however, for customers who need more capacity than a %11 x 3/4" meter but less than a 1" meter. For this
reason, we include the 3/4" meter size in this SDC analysis and update.
The sewer system is designed to carry and treat periods of peak flow. The quantity of water used and
discharged as sewage drives the demand for capital improvements-greater collection and treatment
capacity. By basing the SDC on meter size, the City is signaling to future developers the true cost of
supplying sewer service. This schedule of SDCs gives developers the incentive to select the smallest size
According to the City's 2011 billing records, only one residential customer has a 2" meter, and only two commercial customers
have 4" meters. In all cases, the average monthly usage of these customers is far below the capacity of smaller meters.
Number of Customers by Meter Size Total
Customer class 5/e x'/4 1" 1 1/21t 2" 3" 4" Meters
Residential (single-family) 2,917 138 6 1 0 0 3,062
Commercial 299 96 59 48 6 2 510
Total Customers 3,216 234 65 49 6 2 3,572
% of total 90% 7% 2% 1% 0% 0% 100%
ECONOMIC & FINANCIAL ANALYSIS Page 10
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City of Ashland - Wastewater SDC Update July 2016
meter that will serve the development. For the City, it means minimizing future capital improvements to
increase capacity.
Residential Water Usage
Multifamily residences on a single meter present a special problem because the selection of water meter
size can overcharge or undercharge the development for sewer service. We therefore develop a hybrid
SDC for multifamily developments.
Table 10 and figure 1 compare single-family and multifamily usage in winter. For residential uses, we are
most concerned with average winter usage. In summer, water usage by single-family residences nearly
doubles due to outdoor usage, and that water does not enter the sewer system. s On average, a multifamily
residence uses about 70% of the water used by a single-family residence (or 2,330 gallons/month versus
3,330 gallons/month).
Table 9. Average Winter Water Usage-Single Family vs. Multifamily Residence
Water Usage by Meter Size
(winter average)
%X3 /4" 1" 1 ,I/z" 2" 3" 4" Average'
Single-Family Residence
Gal/mo per Residence 3,325 3,483 3,894 5,086 3,330
Avg gal/day per Capita 53 56 62 81 60
Multi-Family Residence -
Gal/mo per Residence 1,882 1,787 2,214 3,103 2,263 2,841 2,330
% of Single-Family 57% 51% 57% 61% 70%
Source: City of Ashland, 2011 billing records
^Weighted by number of residences per meter size.
s 5,746 gallons/month in summer vs. 3,330 in winter.
a.. ECONOMIC & FINANCIAL ANALYSIS Page 11
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City of Ashland - Wastewater SDC Update July 2016
Figure 1 Average single-family and multifamily water usage per residence, gallons/winter month
6,000
I
Single-family 5,000
I f
+ Multifamily
4,000 I
3,000 + +
2,000 ' + +
+
1,000 {
Gallons/month/residence
(winter average)
5/H x 3/a" r I~ 1 2„ 311 4„ Average
Single-Family 3,325 - 3,483 31894 5,086 1 3,330
Multi-Family (per residence) 1,882 j 1,787 1 2,214 j 3,103 ; 2,263 2,841 2,330 i
Source: City of Ashland, 2011 billing records for January, February, and March.
SDC by Meter Size
To apply the SDC by meter size, we begin by presenting the methodology used to establish the average
usage per single-family residence on a W, x 3/a" meter. As shown in table 10, the average winter water
consumption for a single-family residence, assuming 2.1 persons per household (2010 US Census), is
60 gallons per capita per day (gcpd). The proposed SDC for a single-family residence on a x 3/4"
meter is therefore equal to 60 gped x 2.1 persons/residence x the base fee of $32.18/gallon or $4,054.
This is then applied to larger meters and multifamily residential developments. Table 11 shows the
schedule of SDCs by meter size and meter type, and for multifamily residences. The SDC for
multifamily residences is assessed based on meter size or equivalent number of residences. .
Multifamily residences that are served by a single meter vary in their use of water. Some developers
install larger meters than building codes or engineering estimates require in order to provide better
water service to each residence during peak hours-usually the morning peak when people are
preparing to leave home for work or school and the afternoon when they return. For this reason, we
recommend the City charge multifamily developments the higher of (a) the SDC by meter size or (b)
the rate per multifamily residence ($2,838) multiplied by the number of residences in the development.
For example, an eight-residence apartment on a 1'/z" turbine meter would be charged for the 1'/2" turbine
meter because the SDC by meter size ($27,041) is greater than the SDC for eight residences multiplied
by $2,838 ($22,704). If the developer would have selected a 1'/2" displacement meter, the opposite
would be charged-i.e., eight residences x $2,838 is greater than $13,499 for the 1'/2" displacement
meter. The difference in cost is proportionate to the difference in service between the two meter types.
ECONOMIC & FINANCIAL ANALYSIS Page 12
City of Ashland - Wastewater SDC Update July 2016
Those on the 1'/2" displacement meter likely will suffer from lower water pressure during peak morning
and afternoon usage than had they installed a turbine meter.
Table 10. Proposed SDC-Altern ative Methodology
Displacement Turbine
Meter Sizet Reimbursement Improvement Total Reimbursement Improvement Total
5/s x 3/4 $389 $3,665 $4,054 N/A N/A N/A
3/4 650 6,121 6,7-71 N/A N/A NIA
1 1,039 9,786 10,825 1,295 12,204 13,499
1 %2 1,295 12,204 13,499 2,595 24,446 27,041
2 2,595 24,446 27,041 4,151 39,106 43,257
3 3,890 36,650 40,540 9,075 85,504 94,579
4 5,185 48,854 54,039 15,560 146,600 162,160
6 12,965 122,154 135,119 32,415 305,404 337,819
8 - - - 46,680 439,800 486,480
Average SFR $389 $3,665 $4,054
Multifamily^ $272 $2,566 $2,838 $272 $2,566 $2,838
^ The SDC per multifamily development is either the amount per residence ($2,432) multiplied by the number of residences or the
SDC for the size meter installed.
ANNUAL ADJUSTMENT FOR INFLATION
As provided in ORS 223.304(8)(b), the City may adjust the SDC periodically using the Construction Cost
Index (CCI) published by McGraw-Hill, Inc. in its weekly periodical, Engineering News-Record (ENR).
This publisher's construction (and building) cost index is widely accepted in the engineering and
construction industry. ENR updates the CCI monthly and provides annual summaries in the July edition.
EFA recommends the City update the SDC annually, effective July 1 of each year to correspond with the
City's fiscal year.
The formula for updating the SDC is as follows:
SDCeurrent year = SDC1ast year x (CClcurrent year/CCllast year)
where:
CCilurrent year = CCI for the current year
Culasryea,, = CCI for the last year the SDCs were updated
SDC,I,rren pear = the SDC updated by the CCI
SDCiast,~,a,- = the SDC to be updated
The construction costs listed in table 6 are based on January 2012 costs. These costs equate to ENR's CCI
of 9,176, the index for January 2012. The next adjustment for inflation will use this value as the CChas, veur-
A ECONOMIC & FINANCIAL ANALYSIS Page 13
Wastewater Utility: SDC Analysis and Update July 2016
APPENDICES
Appendix A: Comparison of Ashland's Wastewater SDCs with Select
Oregon Municipalities
SDC per single-family residence, rounded to the nearest dollar.
Jurisdiction SDC/DU Rank
Ashland, current $1,620 7
Ashland, proposed $4,054 2
Eugene" $2,099 5
Grants Pass $2,605 3
Metropolitan Wastewater Management Commission (MWM(:) $1,523 8
Rogue Valley Sanitary Service (RVSS)t $2,337 4
Roseburg Urban Sanitary Authority (RUSA) $2,007 6
Springfield" $5,553 1
Average $2,883
Source: Economic & Financial Analysis, 2011-12 Survey
A City plus Regional SDC (MWMC).
t RVSS serves the following communities: Central Point, Eagle Point, Jacksonville, N. Ashland, N. Medford, N. Phoenix,
NW Medford, Phoenix, Talent, W. Medford, Whetstone, and White City.
56,000
$5,000
I
S4,000 l .
I
- -
$3,000
$2,000
$1,000
- - - -
$0
Springfield Ashland, Grants Pass Rogue Valley Eugene Roseburg Ashland, MWMC
proposed Sanitary Urban current
Service Sanitary
Authority
ECONOMIC & FINANCIAL ANALYSIS Page 14
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