Ordinance 2020-211
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ORDINANCE NO. 2020-21
AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF WYLIE,
TEXAS, AMENDING ORDINANCE NOS. 90-10, 93-4, 97-4, 2001-19, 2006-25
AND 2012-18; UPDATING THE CAPITAL IMPROVEMENTS PLAN AND
WATER AND WASTEWATER IMPACT FEES TO BE ASSESSED BY THE
CITY OF WYLIE, TEXAS; ESTABLISHING A COLLECTION DATE;
ESTABLISHING PROCEDURES AND REGULATIONS REGARDING
WATER AND WASTEWATER IMPACT FEES; PROVIDING FOR A
PENALTY FOR THE VIOLATION OF THIS ORDINANCE; PROVIDING
FOR REPEALING, SAVINGS AND SEVERABILITY CLAUSES;
PROVIDING FOR AN EFFECTIVE DATE OF THIS ORDINANCE; AND
PROVIDING FOR THE PUBLICATION OF THE CAPTION HEREOF.
WHEREAS, the City Council of the City of Wylie, Texas ("City Council") previously
adopted Ordinance Nos. 90-10, 93-4, 97-4, 2001-19, 2006-25 and 2012-18 (individually and
collectively, "Water and Wastewater Impact Fee Ordinance") of the City of Wylie, Texas ("City"
and/or "Wylie"), establishing land use assumptions, a capital improvements plan and water and
wastewater impact fees to be assessed by Wylie; and
WHEREAS, the City Council has investigated and determined that Wylie has fully complied
with Chapter 395 of the Texas Local Government Code ("Code"), concerning the notice, adoption,
promulgation and methodology necessary to adopt land use assumptions and a capital improvements
plan determining water and wastewater impact fees and has properly adopted the Water and
Wastewater Impact Fee Ordinance; and
WHEREAS, the City Council has reviewed the land use assumptions, capital improvements
plan and impact fees adopted under the Water and Wastewater Impact Fee Ordinance in compliance
with the Code; and
WHEREAS, the City Council desires to amend the capital improvements plan, the amount
of water and wastewater impact fees and the Water and Wastewater Impact Fee Ordinance; and
WHEREAS, Wylie has, within sixty (60) days after the date it received the updated capital
improvements plan, adopted an order setting a public hearing to discuss and review the same and to
determine whether to amend the same; and
WHEREAS, before the thirtieth (30th) day before the date of the hearing on the updated
capital improvements plan, Wylie sent a notice of the hearing by certified mail to all persons who
have given written notice by certified or registered mail to the Wylie City Secretary requesting notice
of the hearing within two (2) years preceding the date of adoption of the order setting the public
hearing; and
WHEREAS, Wylie published the required notice of the hearing in one or more newspapers
of general circulation in each county in which Wylie lies before the thirtieth (30th) day before the
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date set for the hearing; and
WHEREAS, on or before the date of the first publication of the notice of the hearing on the
proposed amendments, including the amount of the proposed water and wastewater impact fee per
service unit, such information was made available to the public; and
WHEREAS, the Capital Improvements Advisory Committee, created under Section 395.058
of the Code, filed its written comments on the proposed amendments to the capital improvements
plan and water and wastewater impact fees before the fifth (5th) business day before the date of the
public hearing on the amendments; and
WHEREAS, the City Council held a public hearing to discuss the proposed amendments to
the capital improvements plan and water and wastewater impact fees; and
WHEREAS, within thirty (30) days after the date of the public hearing on the proposed
amendments to the capital improvements plan and water and wastewater impact fees, the City
Council is considering whether to approve or disapprove the amendments as more fully set forth
below; and
WHEREAS, the City Council has investigated and determined that Wylie has fully complied
with Chapter 395 of the Code to approve the amendments to the capital improvements plan and water
and wastewater impact fees; and
WHEREAS, the City Council has further investigated and determined that it is in the best
interest of the citizens of Wylie to adopt such amendments to the capital improvements plan and
water and wastewater impact fees to assure the provision of adequate water and wastewater facilities
to serve new development by requiring each such development to pay its share of the costs of such
improvements necessitated by and attributable to such new development.
NOW, THEREFORE, BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY
OF WYLIE, TEXAS:
SECTION 1: Findings Incorporated. The findings set forth above are incorporated into the
body of this Ordinance as if fully set forth herein.
SECTION 2: Amendment of Water and Wastewater Impact Fee Ordinance. The Water and
Wastewater Impact Fee Ordinance is hereby amended as set forth herein and in the "2019-2029
Water and Wastewater Impact Fee Update" report ("2019 Report"), a copy of which is attached
hereto as Exhibit A and incorporated herein by reference for all purposes. The Water and Wastewater
Impact Fee Ordinance is further amended to read as follows:
"Article 1. Purpose.
This Ordinance is intended to assure the provision of adequate public facilities to serve new
development in the City by requiring each such development to pay its share of the costs of such
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improvements necessitated by and attributable to such new development.
Article 2. Definitions.
Area -related facility means a capital improvement or facility expansion which is designated
in the impact fee capital improvements plan and which is not a site -related facility. Area -related
facility may include a capital improvement which is located offsite or within or on the perimeter of
the development site.
Capital improvement means any of the following water and wastewater facilities with a life
expectancy of three (3) or more years that are owned and operated by or on behalf of Wylie: water
supply, treatment and distribution facilities; wastewater collection and treatment facilities; and
storm water, drainage and flood control facilities, whether or not they are located within the service
area.
Capital Improvements Plan means a plan adopted by this Ordinance that identifies capital
improvements or facility expansions for which impact fees may be assessed.
City or Wylie means the City of Wylie, Texas.
City Council means the City Council of the City of Wylie, Texas.
Facility expansion means the expansion of the capacity of an existing facility that serves the
same function as an otherwise necessary new capital improvement, in order that the existing facility
may serve new development. The term does not include the repair, maintenance, modernization or
expansion of an existing facility to better serve existing development.
Final plat or finalplat approval or approved final plat means the point at which the applicant
has complied with all conditions of approval and the plat has been released by the city for filing with
Collin, Rockwall or Dallas County, whichever is appropriate, and actually filed.
Impact fee means a charge or assessment imposed as set forth in this Ordinance against new
development for water and wastewater. The term does not include:
(a) Required dedications of land for public parks or payments in lieu thereof;
(b) Dedication of rights -of -way or easements or construction or dedication of onsite or
off -site water distribution, waste water collection or drainage facilities, or streets,
sidewalks, or curbs if the dedication or construction is required by a valid ordinance
and is necessitated by and attributable to the new development;
(c) Lot or acreage fees or pro-rata fees to be placed in trust funds for the purpose of
reimbursing developers for oversizing or constructing water or sewer mains or lines;
or
(d) Other pro rata fees for reimbursement of water or sewer mains or lines extended by
Wylie.
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Land use assumptions means a description of the service area and the projections of changes
in land uses, densities, intensities, population and employment growth in the service area over at
least a ten (10) year period and adopted by the city by Ordinance No. 2012-14, as may be amended
from time to time, upon which the capital improvements plans are based.
New development means a project involving the construction, reconstruction, redevelopment,
conversion, structural alteration, relocation or enlargement of any structure, or any use or extension
of the use 'Aland, any of which has the effect of increasing the requirements for capital improvements
or facility expansions, measured by the number of service units to be generated by such activity, and
which requires either the approval of a plat pursuant to the city's subdivision regulations, the issuance
of a building permit or connection to the City's water or wastewater system, and which has not been
exempted from these regulations by provisions herein or attached hereto. Installation of a larger water
meter will constitute new development.
Off -site means a facility or expansion that is not a Site -related facility, as defined herein.
Plat shall mean any type of plat required by law to be filed with the applicable county,
including but not limited to, a final plat, replat, amending plat and/or vacating plat.
Property owner has the same meaning as the term "applicant" in the City's subdivision
regulations. Property owner includes the developer for the new development and the owner of the
property.
Recoup means the imposition of an impact fee to reimburse the City for capital improvements
which the City has previously oversized to serve new development.
Service area means the area of the City's corporate limits and the City's extraterritorial
jurisdiction, as they exist or may be altered, to be served by the capital improvements or facilities
expansions specified in the capital improvements plan.
Service unit means the standardized measure of consumption, use, generation or discharge
attributable to an individual unit of development, that had been calculated in accordance with
generally accepted engineering and/or planning standards, as indicated in the land use equivalency
tables located in the 2019 Report, which is attached hereto as Exhibit A and incorporated by reference
herein, as may be amended from time to time.
Single-family residential has the meaning given the term in the City's zoning regulations, as
they exist or may be amended.
Site -related facility means an improvement or facility which is for the primary use or benefit
of a new development and/or which is for the primary purpose of safe and adequate provision of
water and wastewater facilities to serve the new development, and which is not included in the capital
improvements plan and for which the property owner is solely responsible under subdivision or other
applicable regulations or which is located at least partially on the plat which is being considered for
impact fee assessment. Site -related facility includes that portion of an off -site water or wastewater
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main, equivalent to a standard size water or wastewater main, which is necessary to connect any
new development with the City's water or wastewater system, the cost of which has not been
included in the City's impact fee capital improvements plan.
Utility connection means authorization to install a water meter for connecting a new
development to the City's water system or to the City's wastewater system.
Wastewater facility means a wastewater interceptor or main, lift station or other facility
or improvement used for providing wastewater collection and treatment included within the
City's collection system for wastewater. Wastewater facility includes, but is not limited to, land,
easements or structures associated with such facilities. Wastewater facility excludes a site -
related facility.
Water facility means a water interceptor or main, pump station, storage tank or other
ficility or improvement used for providing water supply, treatment and distribution service
included within the City's water storage or distribution system. Water facility includes, but is
not limited to, land, easements or structures associated with such facilities. Water facility excludes
site -related facilities.
Water meter means a device owned by the City for measuring the flow of water to a
development, whether for domestic or for irrigation purposes.
Article 3. Applicability.
The provisions of this Ordinance regarding water and wastewater impact fees apply to all
new development within the corporate boundaries of the City and its extraterritorial jurisdiction, as
they exist or may be altered.
Article 4. Impact Fees Adopted for Water and Wastewater.
The previously adopted water and wastewater impact fees have been reviewed, evaluated,
updated and revised. The City Council finds that:
(a) the impact fees for water set forth in Exhibit A, attached hereto and incorporated
for all purposes, representing fifty percent (50%) of the total projected costs, are
hereby adopted and approved; and
(b) the impact fees for wastewater set forth in Exhibit A, attached hereto and
incorporated for all purposes, representing fifty percent (50%) of the total projected
costs, are hereby adopted and approved.
Article 5. Impact fee as condition of development approval/permit issuance.
No final plat for new development shall be released for filing with the appropriate county,
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or in the cases within Wylie's extraterritorial jurisdiction for which no plat is submitted to
Wylie, whether the property is located inside or outside the corporate boundaries of Wylie, no
application for a utility connection shall be approved and/or certificate of occupancy shall be
issued, without assessment of a water and wastewater impact fee pursuant to this Ordinance. No
building permit shall be issued, or in the cases within Wylie's extraterritorial jurisdiction for
which no plat is submitted to Wylie, utility connection made, for new development, until the
property owner has paid the water and wastewater impact fee imposed by and calculated herein or
a contract for payment is approved by Wylie and executed by the parties
Article 6. Assessment of water and wastewater impact fees.
(a) The assessment of the water and wastewater impact fee for any new development shall be
calculated and made as follows:
(1) For new development that received final plat approval prior to May 11, 2020 on May
12, 2020;
(2) For new development that received final plat approval on May 12, 2020 or after, at
the time of final plat approval; or
(3)
For land on which new development is proposed to occur or occurs without platting,
upon the earliest of the following: (A) connection to the City's water or sewer system;
(B) upon the issuance of a building permit; or (C) upon the issuance of a certificate
of occupancy.
(b) Following initial assessment of the impact fee for a new development pursuant to subsection
(a), the amount of the impact fee per service unit for that development cannot be increased,
unless the approved final plat expires or lapses under applicable ordinances or law or the
owner proposes to change the approved development by the submission of a new
development application or application to increase the number of service units, in which case
the impact fee will be reassessed for increased or additional service units at the impact fee
rate then in effect.
(c) Following the lapse or expiration of a final plat that has been approved, or a final plat deemed
approved due to "failure of Wylie to act", a new assessment shall be performed at the time
of new final plat approval in accordance with this Ordinance. For land for which an
assessment is made without platting (in accordance with Article 6, Section (a)(3)), a new
assessment shall be performed following a termination of water or sewer service or expiration
of a building permit or certificate of occupancy.
Article 7. Computation and collection of impact fees.
(a) The impact fees due on new development shall be collected at the time of application for a
building permit or, in the cases within Wylie' s extraterritorial jurisdiction for which no plat
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is submitted to Wylie, at the time of application for utility connection, unless an agreement
between the developer and the city has been executed providing for a different time of
payment, or at the time of the issuance of a certificate of occupancy if the assessment is made
upon the issuance of the certificate of occupancy under Article 6, Section (a)(3)(C).
(b) At the time of final plat approval, or the request for a utility connection for an area in the
City's extraterritorial jurisdiction for which a fmal plat was not submitted to the City, for
all new developments, the City shall compute the impact fees due for the new development
in the following manner:
(1) The amount of each type of impact fee due (water and/or wastewater) shall be
determined by multiplying the number of each type of service units generated by the
new development by the impact fee due for each type of service unit in the applicable
service area set forth in Exhibit A.
(2) The amount of each impact fee due shall be reduced by any allowable credits for that
category of capital improvements in the manner provided by this Ordinance.
(c) Whenever a property owner proposes to increase the number of service units for a new
development, the additional impact fees collected for such new service units shall be
determined by using the amount of impact fee per service unit in Exhibit A then in effect,
and such additional fee shall be collected at the time of issuance of a new building permit,
or for an area in the city's extraterritorial jurisdiction for which a fmal plat was not
required to be submitted to the city, prior to or at the time of enlargement of the connection
to the city's water or wastewater system.
Article 8. Credits against impact fees.
(a) Any construction or contributions to or dedications of any area -related facility appearing in
the capital improvements plan that is required to be constructed by a property owner as a
condition of new development shall be credited against the impact fees otherwise due on that
new development from the same category (water or wastewater) of impact fees assessed on
the new development.
(b)
All credits against impact fees shall be subject to the following limitations and shall be
granted based on this Ordinance and any additional administrative guidelines that may be
adopted by the City.
(1) No credit shall be given for the dedication or construction of site -related facilities.
(2) No credit shall exceed an amount equal to the assessed impact fee.
(3) If a credit applicable to a final plat has not been exhausted within ten (10) years from
the acquisition of the first building permit issued or, in the cases within Wylie's
extraterritorial jurisdiction for which no plat is submitted to Wylie, connection made
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after the effective date of the adoption of the applicable impact fees, or within such
period as may otherwise be designated by contract, such credit shall lapse.
(4) In no event will the City reimburse the property owner or developer for a credit when
no impact fees for the new development can be collected pursuant to City ordinance
or for any amount exceeding the total impact fees due for the new development for
the category of capital improvement, .unless otherwise agreed to by the City.
(c) The available credit associated with new development shall be applied against an impact fee
in the following manner:
(1) For single-family residential lots in a new development consisting only of single-
family residential development, such credit shall be prorated equally among such lots,
to be applied at the time of application of a building permit for each lot, against impact
fees to be collected at the time the building permit is issued.
(2) For all other types of new development, including those involving mixed uses, the
credit applicable to the new development shall be applied to the impact fee due at the
time of approval.
(3)
At its sole discretion, the City may authorize alternative credit agreements upon
written agreement with the property owner in accordance with the City's
administrative guidelines.
Article 9. Establishment of accounts.
(a) The City shall establish an account to which interest is allocated for the service area for each
type of capital facility for which an impact fee is imposed. Each impact fee collected within
the service area shall be deposited in such account.
(b)
Interest earned on the account into which the impact fees are deposited shall be considered
funds of the account and shall be used only in the same manner as which the underlying funds
may be used.
(c) The City shall establish adequate financial and accounting controls to ensure that impact fees
disbursed from the accounts are utilized solely for authorized purposes.
(d) The City shall maintain and keep financial records for impact fees, which shall show the
source and disbursement of all fees collected in or expended within the service area. The
records of the account into which impact fees are deposited shall be open for public
inspection and copying during ordinary business hours. The City may establish a fee for
copying services. '
Article 10. Use of proceeds of impact fee accounts.
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(a) The impact fees collected for the service area may be used to finance or to recoup the costs
of any capital improvements or facility expansion identified in the capital improvements plan
for the service area, including but not limited to the construction contract price, surveying
and engineering fees, land acquisition costs (including land purchases, court awards and
costs, attorney's fees and expert witness fees). Impact fees may also be used to pay the
principal sum and interest and other finance costs on bonds, notes or other obligations issued
by or on behalf of the City to finance such capital improvements or facility expansion.
(b) Impact fees collected pursuant to this Ordinance shall not be used to pay for any of the
following expenses:
(1) Construction, acquisition or expansion of public facilities or assets other than capital
improvements or facility expansions identified in the capital improvements plan;
(2) Repair, operation or maintenance of existing or new capital improvements or facility
expansion;
(3)
Upgrade, update, expansion or replacement of existing capital improvements to
provide better service to existing development; or
(4) Administrative and operating costs of the City.
Article 11. Refunds.
(a) Upon application by an owner of property, any impact fee or portion thereof collected
pursuant to City ordinance, which (i) has not been expended within ten (10) years from the
date of payment, or (ii) existing facilities are available and service is denied, or (iii) the City
has, after collecting the impact fee when service was not available, failed to commence
construction within two (2) years or service is not available within a reasonable period
considering the type of improvement or expansion, but in no event later than five (5) years
from the date of payment; payment shall be refunded to the record owner of the property for
which the impact fee was paid or, if the impact fee was paid by another governmental entity,
to such governmental entity, together with interest calculated from the date of payment to the
date of refund at the statutory rate as set forth in the Texas Finance Code, Section 302.002,
or its successor statute. The application for refund pursuant to this article shall be submitted
within sixty (60) days after the expiration of the ten-year period for expenditure of the fee.
An impact fee shall be considered expended on a first -in, first -out basis.
(b) An impact fee collected pursuant to this Ordinance shall also be considered expended if the
total expenditures for capital improvements or facility within the service area within ten (10)
years following the date of payment exceed the total fees collected within the service area for
such improvements or expansions during such period.
(c) If a refund is due pursuant to subsections (a) and (b), the City shall divide the difference
between the amount of expenditures and the amount of the fees collected by the total number
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of service units assumed within the service area for the period to determine the refund due
per service unit. The refund to the record owner shall be calculated by multiplying the refund
due per service unit by the number of service units for the development for which the fee was
paid, and interest due shall be calculated upon that amount.
(d) Upon completion of all the capital improvements or facility expansions identified in the
capital improvements plan for the service area, the City shall recalculate the impact fee per
service unit using the actual costs for the improvements or expansions. If the impact fee per
service unit based on actual cost is less than the impact fee per service unit paid, the City
shall refund the difference, if such difference exceeds the impact fee paid by more than ten
(10) percent. If the difference is less than ten (10) percent, no refund shall be due. The refund
to the record owner shall be calculated by multiplying such difference by the number of
service units for the development for which the fee was paid, and interest due shall be
calculated upon that amount.
Article 12. Updates to plan and revision of fees.
(a) The City shall update its land use assumptions and capital improvements plans at least every
five (5) years, commencing from the date of adoption of such plans, and shall recalculate the
impact fees based thereon in accordance with the procedures set forth in Texas Local
Government Code Chapter 395 or in any successor statute.
(b) The City may review its land use assumptions, impact fees, capital improvements plans and
other factors such as market conditions more frequently than provided in subsection (a) to
determine whether the land use assumptions and capital improvements plan should be
updated and the impact fee recalculated accordingly, or whether any Exhibit(s) hereto should
be changed.
(c)
If, at the time an update is required pursuant to subsection (a), the City Council determines
that no change to the land use assumptions, capital improvements plan or impact fee is
needed, it may dispense with such update by following the procedures in Texas Local
Government Code Section 395.0575 or its successor statute.
(d) In addition to the reviews required by this Article, the City shall also conduct the reviews
required by Article 4, Impact Fees Adopted for Water and Wastewater, above.
Article 13. Use of other financing mechanisms.
(a) The City may finance capital improvements or facility expansion designated in the capital
improvements plan through the issuance of bonds, through the formation of public utility
districts or other assessment districts, or through any other authorized mechanism, in such
manner and subject to such limitations as may be provided by law, in addition to the use of
impact fees.
(b) Except as herein otherwise provided, the assessment and collection of an impact fee shall be
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additional and supplemental to, and not in substitution of, any other tax, fee, charge or
assessment which is lawfully imposed on and due against the property.
Article 14. Impact fee as additional and supplemental regulation.
Impact fees established by this Ordinance are additional and supplemental to, and not in
substitution of, any other requirements imposed by the City on the development of land or the
issuance of building permits or certificates of occupancy, including but not limited to thoroughfare
impact fees Such fee is intended to be consistent with and to further the policies of the City's
comprehensive land use plan, the capital improvements plan, the zoning ordinance, subdivision
regulations and other City policies, ordinances, codes and resolutions by which the City seeks to
ensure the provision of adequate public facilities in conjunction with the development of land.
Article 15. Relief procedures.
Any person who has paid an impact fee or an owner of land upon which an impact fee has
been paid may petition the City Council to determine whether any duty required by this Ordinance
has not been performed within the time so prescribed. The petition shall be in writing and shall state
the nature of the unperformed duty and request that the duty be performed within sixty (60) days of
the request. If the City Council determines that the duty is required pursuant to this Ordinance and is
late in being performed, it shall cause the duty to commence within sixty (60) days of the date of the
request and to continue until completion."
SECTION 3: Capital Improvements Plan Adopted. The previously adopted capital
improvements plan has been reviewed, evaluated, updated and revised, and the City Council finds
that the capital improvements plan that is set forth in the 2019 Report is hereby adopted and
approved.
SECTION 4: Repealing/Saving. The Water and Wastewater Impact Fee Ordinance shall
remain in full force and effect, save and except as amended by this or any other Ordinance. All
provisions of any other ordinances in conflict with this Ordinance are hereby repealed to the extent
they are in conflict; but such repeal shall not abate any pending prosecution for violation of the
repealed ordinance, nor shall the repeal prevent a prosecution from being commenced for any
violation if occurring prior to the repeal of the ordinance. Any remaining portion of conflicting
ordinances shall remain in full force and effect
SECTION 5: Penalty. Any person, firm, entity or corporation who violates any provision of
this Ordinance, as it exist or may be amended, shall be deemed guilty of a misdemeanor, and upon
conviction therefore, shall be fined in a sum not exceeding TWO THOUSAND AND 00/100
DOLLARS ($2,000.00). Each continuing day's violation shall constitute a separate offense. The
penal provisions imposed under this Ordinance shall not preclude Wylie from filing suit to enjoin
the violation. Wylie retains all legal rights and remedies available to it pursuant to local, state and
federal law.
SECTION 6: Severability. Should any section, subsection, sentence, clause or phrase of
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this Ordinance be declared unconstitutional and/or invalid by a court of competent jurisdiction, it is
expressly provided that any and all remaining portions of this Ordinance shall remain in full force
and effect. Wylie hereby declares that it would have passed this Ordinance, and each section,
subsection, clause or phrase thereof, regardless of whether any one or more sections, subsections,
sentences, clauses or phrases are declared unconstitutional and/or invalid.
SECTION 7: Effective Date. This Ordinance shall become effective immediately upon its
adoption and publication as required by law and the City Charter.
DULY PASSED AND APPROVED BY THE CITY COUNCIL OF THE CITY OF
WYLIE, TEXAS, on this 11th day of February, 2020.
ATTESTED TO AND
CORRECTLY RECORDED BY:
k A A ,LQ. et v
Stephanie Storm, City Secretary
Eric Hogue, M , yor
EOF
Date of Publication February 19, 2020, Wylie News
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WATER AND WASTEWATER
IMPACT FEE UPDATE
2019 - 2029
Prepared For
fN
CITY
WYLIE
Prepared By
BIRKHOFF, HENDRICKS & CARTER, L.L.P.
PROFESSIONAL ENGINEERS
11910 GREENVILLE AVENUE, SUITE 600
DALLAS, TEXAS
TEXAS FIRM 526
October 2019
;,4,4.,ea(2C-
/
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*,i�
40E RICt-6ARD CARTER
r; •
!-a9: 6.4008 : 4
t� 'o',',G is T ER-•;.��.r
Birkhoff, Hendricks & Carter, L.L.P.
CITY OF WYLIE
2018 WATER AND WASTEWATER IMPACT FEE UPDATE
I. INTRODUCTION
On April 24, 2001, the City of Wylie adopted Ordinance No. 2001-19 "Establishing Water and
Wastewater Impact Fees" in accordance with Chapter 395 of the Local Government Code. The
ordinance and associated impact fees were established and based on the Service Area Land Use
Assumptions and Capital Improvements Plan prepared by Hunter Associates of Texas, Ltd.,
dated March 2001. The City updated their water and wastewater impact fees by Ordinance
2012-18 in response to the adoption of a new Comprehensive Land Use Plan in May 2012 and
an expansion of the City's corporate boundaries and environmental jurisdiction. The maximum
calculation fee and current imposed fees are summarized below:
Fee Per Service Unit
Calculated
Maximum
Fees Imposed
(Ordinance 2011-11)
Water
$3651.42
$3651.42
Wastewater
$773.48
$773.48
Chapter 395 requires that an update of the land use assumptions, capital improvements plan,
and impact fees be performed every five years, unless it is determined by the political
subdivision after a review that such an update is not necessary.
In accordance with the requirements of Chapter 395.052 of the Local Government Code, this
report reviews the City of Wylie's Land Use Assumptions and updates the Capital
Improvement Plan.
Chapter 395, of the Local Government Code is an act that provides guidelines for financing
capital improvements required by new development in municipalities, counties, and certain
other local governments. The basis for determination of an impact fee requires the
preparation and adoption of a land use plan and growth assumption, and the preparation of a
10-year capital improvement plan. A master plan of the water and wastewater systems is
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necessary to prepare a 10-year capital improvement plan. From these two phases, a maximum
impact fee is calculated.
The Act allows the maximum impact fee to be charged if revenues from future ad valorem
taxes and water and sewer bills are included as a credit in the analysis. If not, the Act allows
the maximum fee to be set at 50% of the calculated maximum fee. The following items were
included in the impact fee calculation:
A. The portion of the cost of the new infrastructure that is to be paid by the City, including
engineering, property acquisition and construction cost.
B. Existing excess capacity in lines and facilities that will serve future growth and which
were paid for in whole or part by the City.
C. Engineering and quality control fees for construction projects.
D. Interest and other finance charges on bonds issued by the City to cover its portion of cost.
The engineering analysis portion of the Water and Wastewater Impact Fee review determines
utilized capacity cost of the major water distribution and wastewater collection facilities
between the year 2019 and the year 2029. Facilities in this analysis include, water pump
stations, elevated and ground water storage tanks, water transmission lines, wastewater
treatment plants, wastewater lift stations and wastewater collection lines. The North Texas
Municipal Water District (NTMWD) owned water treatment and distribution components
were excluded from this analysis. The study period is a ten-year period with 2019 as the base
year. The impact fee calculation for the water and wastewater systems is based on land uses
provided by the City of Wylie. Concurrently with this Impact Fee Update, the City's Water
Distribution Master Plan has been updated. The Master Plans are available for review from
the City of Wylie. The equivalency factors utilized in this analysis conform to the latest
American Water Works Association Standards (C700 - C703).
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II. GLOSSARY
1. Advisory Committee means the capital improvements advisory committee established by
the City for purposes of reviewing and making recommendations to the City Council on
adoption and amendment of the City's impact fee program. The City Planning and
Zoning Commission plus one business representative will serve this role.
2. Area -related facility means a capital improvement or facility expansion which is
designated in the impact fee capital improvements plan and which is not a site -related
facility. Area -related facility may include a capital improvement that is located off -site,
or within or on the perimeter of the development site.
3. Assessment means the determination of the amount of the maximum impact fee per
service unit that can be imposed on new development.
4. Capital improvement means either a water facility or a wastewater facility, with a life
expectancy of three or more years, to be owned and operated by or on behalf of the City.
. City means the City of Wylie, Texas.
6. Credit means the amount of the reduction of an impact fee due, determined under this
ordinance or pursuant to administrative guidelines, which is equal to the value of area -
related facilities provided by a property owner pursuant to the City's subdivision or
zoning regulations or requirements, for the same type of facility.
7. Facility expansion means either a water facility expansion or a sewer facility expansion.
8. Final plat approval means the point at which the applicant has complied with all
conditions of approval in accordance with the City's subdivision regulations, and the plat
has been approved for filing with the County.
9. Impact fee means either a fee for water facilities or a fee for wastewater facilities,
imposed on new development by the City pursuant to Chapter 395 of the Texas Local
Government Code in order to generate revenue to fund or recoup the costs of capital
improvements or facility expansion necessitated by and attributable to such new
development. Impact fees do not include the dedication of rights -of -way or easements for
such facilities, or the construction of such improvements, imposed pursuant to the City's
zoning or subdivision regulations.
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10. Impact fee capital improvements plan means either a water capital improvements plan or
a wastewater capital improvements plan, adopted or revised pursuant to the impact fee
regulations.
11. Land use assumptions means the projections of population and growth, and associated
changes in land uses, densities and intensities over at least a ten-year period, as adopted
by the City and as may be amended from time to time, upon which the capital
improvements plans are based.
12. Land use equivalency table means a table converting the demands for capital
improvements generated by various land uses to numbers of service units, as may be
amended from time to time.
13. New development means the subdivision of land; the construction, reconstruction,
redevelopment, conversion, structural alteration, relocation, or enlargement of any
structure; or any use or extension of the use of land; any of which increases the number of
service units.
14. Plat has the meaning given the term in the City's subdivision regulations. Plat includes
replat.
15. Platting has the meaning given the term in the City's subdivision regulations. Platting
includes replatting.
16. Property owner has the meaning given the term in the City's subdivision regulations.
Property owner includes the developer for a new development.
17. Recoupment means the imposition of an impact fee to reimburse the City for capital
improvements that the City had previously oversized to serve new development.
18. Roadway means any freeway, expressway, principal or minor arterial or collector
roadways designated in the City's adopted Thoroughfare Plan, as may be amended from
time to time. Roadway does not include any roadway designated as a numbered highway
on the official Federal or Texas highway system.
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19. Roadway capital improvements plan means the adopted plan, as may be amended from
time to time, which identifies the roadway facilities or roadway expansions and their
costs for each road service area, which are necessitated by and which are attributable to
new development, for a period not to exceed 10 years.
20. Roadway expansion means the expansion of the capacity of an existing roadway in the
City, but does not include the repair, maintenance, modernization, or expansion of an
existing roadway to better serve existing development.
21. Roadway facility means an improvement or appurtenance to a roadway that includes, but
is not limited to, rights -of -way, whether conveyed by deed or easement; intersection
improvements; traffic signals; turn lanes; drainage facilities associated with the roadway;
street lighting or curbs.
22. Service area means either a water service area or wastewater benefit area within the City,
within which impact fees for capital improvements or facility expansion will be collected
for new development occurring within such area, and within which fees so collected will
be expended for those types of improvements or expansions identified in the type of
capital improvements plan applicable to the service area.
23. Service unit means the applicable standard units of measure shown on the land use
equivalency table in the Impact Fees Capital Improvements Plan that can be converted to
water meter equivalents, for water or for wastewater facilities, which serves as the
standardized measure of consumption, use or generation attributable to the new unit of
development.
24. Site -related facility means an improvement or facility which is for the primary use or
benefit of a new development, and/or which is for the primary purpose of safe and
adequate provision of water or wastewater facilities to serve the new development, and
which is not included in the impact fees capital improvements plan and for which the
property owner is solely responsible under subdivision or other applicable development
regulations.
25. Utility connection means installation of a water meter for connecting a new development
to the City's water system, or connection to the City's wastewater system.
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26. Wastewater facility means a wastewater interceptor or main, lift station or other facility
included within and comprising an integral component of the City's collection system for
wastewater. Wastewater facility includes land, easements or structure associated with
such facilities. Wastewater facility excludes site -related facilities.
27. Wastewater facility expansion means the expansion of the capacity of any existing
wastewater facility for the purpose of serving new development, but does not include the
repair, maintenance, modernization, or expansion of an existing wastewater facility to
serve existing development.
28. Wastewater capital improvements plan means the adopted plan, as may be amended from
time to time, which identifies the wastewater facilities or wastewater expansions and their
associated costs which are necessitated by and which are attributable to new
development, for a period not to exceed 10 years.
29. Water facility means a water interceptor or main, pump station, storage tank or other
facility included within and comprising an integral component of the City's water storage
or distribution system. Water facility includes land, easements or structures associated
with such facilities. Water facility excludes site -related facilities.
30. Water facility expansion means the expansion of the capacity of any existing water
facility for the purpose of serving new development, but does not include the repair,
maintenance, modernization, or expansion of an existing water improvement to serve
existing development.
31. Water improvements plan means the adopted plan, as may be amended from time to time,
which identifies the water facilities or water expansions and their associated costs which
are necessitated by and which are attributable to new development, for a period not to
exceed 10 years.
32. Water meter means a device for measuring the flow of water to a development, whether
for domestic or for irrigation purposes.
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III. LAND USE ASSUMPTIONS (Provided By: The City Of Wylie)
A. Purpose
Chapter 395 of the Texas Local Government Code prescribes the process by which cities
in Texas must formulate development impact fees. The initial step in this process is the
establishment of "land use assumptions" for the City upon which the impact fee program
is based. An executive decision has been made to use the 2005 Future Land Use Plan
instead of the 2012 Future Land Use Plan due to the land use categories used in the 2012
Future Land Use Plan being too broad for a hydraulic analysis. These land use
assumptions, which are derived from the 2005 Future Land Use Map and from the 2018
Population Projections provided by City Staff, will become the basis for the preparation
of impact fee capital improvement plans for water and wastewater facilities.
To assist the City of Wylie in determining the need for, and the timing of, capital
improvements to serve future development, a reasonable estimation of future growth is
required. The growth and development projections were formulated by the City of Wylie
based upon assumptions pertaining to the type, location, quantity and timing of various
future land uses within the community, and to establish and document the methodology
used for preparing the growth and land use assumptions.
B. Elements of The Land Use Assumption Report
This report contains the following components:
1) Methodology -- Explanation of the general methodology used to prepare the land
use assumptions.
2) Service Zone Map — The impact fee service area for water and wastewater
facilities is shown on Figure 1.
3) Base Data — Information on population and land use for Wylie for each capital
facility/impact fee service area.
4) Ten -Year Growth Assumptions — Population and land use growth assumptions
for ten years for each capital facility/impact fee service area.
5) Ultimate Population Projections — Projections that reflect a completely developed
condition, based upon the City's ultimate "build -out" scenario.
6) Summary — Brief synopsis of the land use assumptions report.
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C. Methodology
Based upon the growth assumptions and the capital improvements that will be needed to
support future growth, it is possible to develop an impact fee structure which fairly
allocates capital improvement costs to growth areas in relationship to their impact upon
the entire infrastructure system. The database and projections in this report have been
formulated using reasonable and generally accepted planning principles and
methodologies.
These land use assumptions and future growth projections take into consideration several
factors influencing development patterns, including the following:
1) The character, type, density and quantity of existing development
2) Existing land use patterns
3) Anticipated future land uses (as shown in the City's 2005 Future Land Use Plan)
4) Availability of land for future expansion, and the City's physical holding capacity
5) Current growth trends in the City and region
6) Location and configuration of undeveloped (vacant) land
7) Known or anticipated development projects
8) Potential sanitary sewer availability (e.g., topographical constraints)
9) Growth policies adopted in the Future Land Use Plan
A summary of the general methodology used for the preparation of this report follows:
1) Establish impact fee water and wastewater service areas (Part III D — Service Area
Map).
2) Collect/determine benchmark (i.e., base year) data on population and land use as of
January 2018 (Part III E — Base Year Data).
3) Project population and land use growth for ten years by impact fee service areas
(Part III F — Ten -Year Growth Assumptions).
Project the ultimate population for a fully developed City, assuming full
development of service area(s) (Part III G — Ultimate Population Projections).
A more detailed methodology for each is contained within the referenced sections.
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D. Service Area Maps
Figure 1 on the following page shows the proposed service area for water and wastewater
facilities. The service area boundary for wastewater includes all land area within the
existing City limits, all land within the Wylie Water CCN, and those portions of shared
Water CCNs that Wylie will provide wastewater facilities as development occurs. The
service area boundary for water includes all land within the Wylie Water CCN, and those
portions of shared CCNs that Wylie will serve as development occurs. However,
portions of the existing and proposed development within the City limits obtain water
from alternative suppliers, namely the Wylie Northeast Water Supply Corporation
District and the Eastfork Special Utility District. This background information provides
insight to the discrepancy between the overall City population and the population within
the water service area (discussed later in the report). A recommended priority listing of
projects for water and wastewater facilities will be outlined in the City's Capital
Improvements Program (CIP). The actual ten-year CIP upon which the impact fee
program must be based has been prepared, per the requirements of Chapter 395.
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1
E
1
I,
CITY OF
WYLIE
WATER & WASTEWATER
SERVICE AREA MAP
MOO= MUM. LLP.
rogrommt. pram
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SCALE 1'=4000'
FIGURE 1
-IQ
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E. Base Year Data
This section documents historical growth trends and base data for the City. This
"benchmark" information provides a starting basis of data, as established in the City's
Future Land Use Plan and updated in April 2005, and the City's Comprehensive Land
Use Plan, adopted in 2012 for the ten-year growth assumptions.
One method of predicting future growth is looking at past growth. The historical growth
rates for Wylie are shown in Table 1 below.
Table 1
HISTORICAL GROWTH RATE
City of Wylie, Texas
Year
City of Wylie
% Change
Compounded
overage Annual
/o Change per
Period
1970 (1)
2,675
0.00%
0.00%
1980 (1)
3,152
17.83%
1.65%
1990 (1)
8,716
176.52%
10.71%
2000 (1)
14,965
71.70%
5.55%
2010 (1)
41,427
176.83%
10.72%
2018 (2)
52,003
25.53%
2.88%
Source: U.5. Census.
tzl Source: Current Population Estimate, Provided by City Staff.
Over the 40-year period of 1970 to 2010, the City of Wylie experienced a significant
amount of growth. The City is continuing to experience an increase in population,
housing, and commercial development activity, although the rapid growth experienced
through the early 2000's began tapering down in 2006-2007 due to a variety of economic
factors. As of 2018, the City of Wylie is projected to have a total of around 600
residential lots to be constructed. The build -out of these lots will increase the existing
housing stock as follows: 17,128 existing units (2018) + 600 future units (2019) = 17,728
units or a 3.5% increase. Accordingly, it is anticipated that the City has the lot inventory
to maintain the increases in population and housing growth experienced over the last few
years.
It is also anticipated that the City will continue to receive petitions for the zoning and
platting of new subdivisions.
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Another comparison and useful base data source for population growth is the past trends
in residential construction. Table 2 shows the growth trend in residential construction in
the City from 2013 to 2018. At the end of 2013 there were approximately 15,024
residential units; this is the base number for percentage of growth.
Table 2
RESIDENTIAL BUILDING PERMITS PER YEAR
City of Wylie, Texas
Year
Prior Total Residential Units
New Residential Units
% Growth
2013
15,024 (1)
250
1.7%
2014
15,274 (1)
298
2.0%
2015
15,572 (1)
542
3.5%
2016
16,114 (1)
447
2.8%
2017
16,561 (1)
567
3.4%
2018
17,128 (1)
600
3.5%
Average: 451 new residential units per year over 6 years
(1) City of Wylie 2018 Population Projections
The growth in housing shown in Table 2 illustrates the recent trend in residential activity
for the City of Wylie. The trend shown here reflects that observed for the recent trend in
population growth. The City has seen moderate gains in residential growth over the past
few years. As mentioned earlier, the City's available lot inventory is increasing.
For the purposes of documenting changes in population, land use, density and intensity,
the data format to be used as a basis to formulate the land use assumptions will be
principally population and land use estimates. These estimates and the land use
inventory, from the City's 2005 Future Land Use Map, were used to establish a beginning
baseline and updated to June 2018 for the population projections provided by the City.
1) Population and Land Use
Existing land uses were documented throughout each of the service areas in
development of the Land Use Plan. Residential and non-residential building
activity for each of the service areas was then analyzed to establish base population
for 2018.
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The estimated population in 2018 for both service areas is:
Water Wastewater
• Population 43,147 52,003
• Dwelling Units 14,479 17,451
• Households 13,842 16,683
These residential calculations are based on the following assumptions:
• Occupancy Rate 95.6 percent (2010 U.S. Census for Wylie); and
• Average Household Size 2.98 persons/household (2010 U.S. Census).
2) Land Use
Prior to an evaluation and projection of future land use patterns, an understanding
of existing conditions is essential. Documentation of existing land use patterns
within the City and its ETJ was included as part of the Land Use Plan prepared by
others. This data was updated based on information provided by the City to reflect
residential and non-resident development activity that occurred through 2018. This
documentation provides an overview of the general present physical composition
and condition of the City.
Table 3 shows a summary of estimated existing land uses for the land area within
the water and sanitary sewer service zones.
TABLE 3A
Existing Land Use For The Water Service Zones — 2018
City of Wylie, Texas
Land Use
Acres Used
(Developed)
Percent of
Developed Area
Low Density Residential
379
5.20%
Medium Density Residential
2,864
39.30%
High Density Residential
306
4.20%
Commercial /Retail/Office
309
4.24%
Commercial Corridor
399
5.47%
School, Public/Semi-Public, Services
295
4.05%
Neighborhood Services
55
0.75%
Downtown Historic District
34
0.47%
Utilities/Heavy Industrial
375
5.15%
Light Industrial
459
6.30%
Parks & Open Space
320
4.39%
Agricultural
1,493
20.49%
Total Area:
7,288
100.00%
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TABLE 3B
Existing Land Use For The Sanitary Sewer Service Zones — 2018
City of Wylie, Texas
Land Use
Acres Used
(Developed)
Percent of
Developed Area
Low Density Residential
2,210
17.73%
Medium Density Residential
4,556
36.54%
High Density Residential
385
3.09%
Commercial /Retail/Office
658
5.28%
Commercial Corridor
399
3.20%
School, Public/Semi-Public, Services
_ 518
4.15%
Neighborhood Services
55
0.44%
Downtown Historic District
34
0.27%
Utilities/Heavy Industrial
641
5.14%
Light Industrial
678
5.44%
Parks & Open Space
525
4.21%
Agricultural
1,808
14.50%
Total Area:
12,467
100.00%
Table 4 shows a summary of estimated existing land uses in acres per 100 persons.
TABLE 4A
Existing Land Use Per 100 Persons
For The Water Service Zones — 2018
City of Wylie, Texas
Land Use Category
Acres Per
100 Persons
Low Density Residential
0.88
Medium Density Residential
6.64
High Density Residential
0.71
Commercial /Retail/Office
0.72
Commercial Corridor
0.92
School, Public/Semi-Public, Services
0.68
Neighborhood Services
0.13
Downtown Historic District
0.08
Utilities/Heavy Industrial
0.87
Light Industrial
1.06
Parks & Open Space
0.74
Agricultural
3.76
Total Area:
16.89
Based upon 2018 water service area population of 43,147 persons.
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TABLE 4B
Existing Land Use Per 100 Persons
For The Sanitary Sewer Service Zones — 2018
City of Wylie, Texas
Land Use Category
Acres Per 100 Persons
Low Density Residential
5.24
Medium Density Residential
10.80
High Density Residential
0.91
Commercial /Retail/Office
1.56
Commercial Corridor
0.95
School, Public/Semi-Public, Services
1.23
Neighborhood Services
0.13
Downtown Historic District
0.08
Utilities/Heavy Industrial
1.52
Light Industrial
1.61
Parks & Open Space
1.24
Agricultural
4.28
Total Area:
29.55
Based upon 2018 sewer service area population of 42,196 persons.
F. Ten -Year Growth Assumptions
Growth is characterized in two forms: population (residential land use) and non-
residential land use. Several assumptions were necessary in order to arrive at reasonable
growth rates for population and employment in the City of Wylie. The following
assumptions were made as a basis from which 10-year projections are initiated:
1) Future land uses will occur as shown on the Future Land Use Plan.
2) The City will be able to finance the necessary improvements to the water and
wastewater systems to accommodate expected growth.
3) School facilities will accommodate expected increases in school -age population.
4) Densities will be as projected, based upon anticipated zoning districts.
5) Known or anticipated development projects will occur as presently planned.
The 10-year projections, or land use assumptions, are based upon the establishment of a
reasonable growth rate based upon past trends and/or other considerations. Considering
the increasing trends in population and housing growth (Table 2) and the City's proximity
to the Dallas/Fort Worth metropolitan area and combining these factors with anticipated
development projects provides a reasonable indication of growth potential. Based upon
these assumptions, the annual average number of residential dwelling units constructed
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per year over the next 10-year period is projected to be approximately 234. A household
size of 2.98 persons per household with an occupancy rate of 95.6 percent was used to
calculate the future population based on the projected residential activity. The 2018
population of 52,003 (source: City of Wylie) is projected to increase to approximately
58,667 by the year 2028, representing a compounded annual growth rate of 1.2%. This
rate would generate an average population increase of about 667 persons per year. The
following shows the formula for calculating the ten-year growth assumptions:
Residential:
234 dwelling units x 0.956 occupancy rate = 224 occupied dwelling units/year
224 occupied dwelling units/year x 2.98 household size = 667 persons/year (+/-)
667 persons/year x 10 years = 6,670 persons net 10-year residential growth
"Note: It should be noted that the 10 year population and housing projection assumes growth potential
within the existing municipal boundaries and the existing extraterritorial jurisdiction (ETJ).
These projections do not assume residential growth beyond the existing ETJ"
This rate of growth (1.2% compound annual growth rate) is a conservative reasonable rate
for Wylie to be expected to grow at over the next 10 years. The growth rate projected for
Wylie is less than the compounded annual growth rate over the last 8 years (2.88%) and is
consistent with other comparable cities within the region.
Table 5 shows the average annual compounded growth rates for other cities in the area
and for Collin County from 2010 to 2018:
TABLE 5
Populations and Growth Rates of Area Cities
and Collin County — 2010 to 2018
City/Jurisdiction
Population
Population
Compounded
Average
Annual %
Change
(2010-2018)
Wylie
41,427
52,003
2.88%
Allen
84,253
96,870
1.76%
Frisco
116,989
172,940
5.01%
McKinney
131,117
179,970
4.04%
Murphy
17,708
20,010
1.54%
Plano
259,841
281,390
1.00%
Prosper
9,423
22,650
11.59%
Collin County
782,341
969,730
2.72%
Source: U.S. Census, 2010 and 2018 Population Estimates, North Central Texas
Council of Governments (2018).
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Table 5 illustrates that the regional growth pattern is continuing to move outward from
Dallas toward the City of Wylie. Those cities that experienced the greatest amount of
growth from the 1980s to the 1990s have achieved significant levels of build -out and
those cities further north have begun to experience significant population and housing
increases. Those cities north and west of Wylie are currently experiencing growth rates
similar to those projected for Wylie through 2028.
The projected annual growth rate for the City of Wylie and the resulting population
projection of 58,667 persons (48,694 persons within Wylie's Water CCN) for the 10-year
planning horizon is considered reasonable for planning purposes. As mentioned, this
growth is projected throughout the City's water and wastewater service area, with a
substantial amount of the growth being beyond the current municipal boundaries during
the next ten years. The previously described growth rate represents growth throughout
the water and wastewater service zones.
It is anticipated that most of this projected growth will ultimately be incorporated into the
City service area limits for several reasons:
1) More stringent environmental laws pertaining to septic waste systems.
2) Increasing insurance rates outside corporate City limits.
3) The City's progressive philosophy regarding water and sewer line extensions.
4) Proposed upgrading of construction standards in the City's ETJ.
Changes in population affect the use of land. In the case of Wylie, increased population
is due to the conversion of vacant or agricultural land into residential and other land uses.
Non-residential development will increase to provide the goods and services that the
increased population will demand. The estimation of the additional acres to be developed
for the next 10 years will aid in the determination of demand for additional water and
wastewater facilities.
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Table 6 shows the additional Retail/Office, Commercial, and industrial land uses
required for the increase in population projected through 2028 (6,670 people).
TABLE 6
TEN-YEAR LAND USE PROJECTIONS -- 2028
For The Water Service Zones — 2028
City of Wylie, Texas
Land Use
Future Acres
Per 100 Persons
Acres Required For -
6,670 Persons
Commercial/Retail/Office
1.80
120
School, Public/Semi-Public, Services
0.67
45
Utilities, Heavy and Light Industrial
2.50
167
Parks & Open Space
1.03
69
Total Acres:
6.00
401
Source: City of Wylie, April 2005.
The future acres per 100 persons reflect those ratios that have been observed for Texas
cities with healthy local economies. It should be noted that these ratios also closely
reflect the existing land use mix for Wylie's water and wastewater service areas. The
ratios are used to calculate the amount of non-residential development that the local
population may support.
G. Ultimate Population Projection
An ultimate, or holding capacity, land use and population projection was also established
in the City of Wylie's Future Land Use Plan. First, known densities of development were
considered. Then, based upon the remaining developable vacant land in Wylie and its
ETJ, densities of anticipated development projects were applied. The ultimate population
of the City of Wylie is a function of anticipated residential land use area (acres), housing
density (dwelling units per acre), and population density (persons per dwelling unit).
Based upon the land uses identified on the Future Land Use Plan, the total ultimate land
use areas of residential development were calculated using the density standards adopted
as part of the Future Land Use Plan. The ultimate holding capacity for the planning area,
assuming that each residential area is built out to its maximum capacity, generates a
maximum population of approximately 50,589 persons for the water service area and
60,950 persons for the sewer service area, excluding the unincorporated lake areas.
j:\clerical\wylie\2018-118 w&ww-thoroughfare-impact fee\cip & impact fee\reports\03-report.doc - 18 -
Birkhoff, Hendricks & Carter, L.L.P.
H. Summary
The data used to compile these land use assumptions were from three sources, anticipated
development for the City of Wylie, residential building data and other data from the City,
and information from the Future Land Use Plan. The ten-year growth projections were
calculated based upon reasonable growth rates and trends for Wylie and the surrounding
area. Ultimate projections were based upon the holding capacity of vacant land using
land use types and applying densities as established by development policies, the Future
Land Use Plan, and known proposed development plans.
The land use assumptions may be summarized as follows:
1) The Wylie wastewater planning area contains approximately 19.75 square miles.
2) The 2018 estimated population in the existing water service area is 43,147. The 2018
estimated population in the existing wastewater service area is 52,003.
3) The ten-year growth projections were calculated using a compounded average annual
growth rate of approximately 1.2%.
4) The ten-year population projection for Wylie is approximately 48,694 persons inside
the water service area and 58,667 in the sanitary sewer service area. As noted, the
population within the water service area excludes those residents obtaining water
from providers other than the City of Wylie and the population within the sanitary
sewer service area excludes a small percentage not connected to the wastewater
system.
5) The ultimate (build -out) population within the water service area is approximately
50,589 persons and 60,950 persons in the wastewater service area, according to the
2018 population projections.
j:\clerical\wylie\2018-I18 w&ww-thoroughfare-impact fee\cip & impact fee\reports\03-report.doc - 19 -
Birkhoff, Hendricks & Carter, L.L.P.
1
IV. DEFINITION OF A SERVICE UNIT — WATER AND WASTEWATER
Chapter 395 of the Local Government Code requires that impact fees be based on a defined
service unit. A "service unit" is a standardized measure of consumption, use generation, or
discharge attributable to an individual unit of development calculated in accordance with
generally accepted engineering or planning standards. This update defines a water and
wastewater service unit to be a 3/4-inch water meter and has referred to this service unit as a
Single Family Living Unit Equivalent (SFLUE). The SFLUE is based on the continuous duty
capacity of a 3/4-inch water meter. This is the typical meter used for a single-family detached
dwelling, and therefore is considered to be equivalent to one "living unit". Many single-family
dwellings were constructed with 5/8-inch meters in the City; therefore, 5/8-inch meters are also
considered one "living unit". Other meter sizes can be compared to the 3/4-inch meter through
a ratio of water flows as published by the American Water Works Association as shown in
Table 7 below. This same ratio is then used to determine the proportional water and
wastewater impact fee amount for each water meter size.
TABLE 7
Living Unit Equivalencies
For
Various Types and Sizes of Water Meters
Meter Type
Meter. Size
Continuous Duty
Maximum Rate (gpm) (a)
Ratio to 3/4" Meter
Simple
5/8" & 3/4"
15
1.0
Simple
1"
25
1.7
Simple
1 %2"
50
3.3
Simple
2"
80
5.3
Compound
2"
80
5.3
Turbine
2"
100
6.7
Compound
3"
160
10.7
Turbine
3"
240
16.0
Compound
4"
250
16.7
Turbine
4"
420
28.0
Compound
6"
500
33.3
Turbine
6"
920
61.3
Compound
8"
800
53.3
Turbine
8"
1,600
106.7
Compound
10"
2,300
153.3
Turbine
10"
2,500
166.7
Turbine
12"
3,300
220.0
(a) Source: AWWA Standard C700 (1995) - C703 (1996)
j:\clerical\wylie\2018-118 w&ww-thoroughfare-impact fee\cip & impact fee \reports\03-report.doc - 20 -
Birkhoff, Hendricks & Carter, L.L.P.
V. CALCULATION OF WATER & WASTEWATER - LIVING UNIT EQUIVALENTS
The City of Wylie provided the existing water meter count by size category as of June 2018. In
total, there are 13,048 water meters serving the existing population of 43,147 residents and
businesses. Table 8 shows the number of existing meters, the living unit equivalent factor and
the total number of living unit equivalents for water accounts.
The City reports there are 16,341 accounts in 2019, this represents an approximate annual
increase of 2.91% and is similar to the growth rate for the water system. Table 9 illustrates the
existing accounts and SFLUE's based on the same percentage of growth as shown in the water
system.
Using the growth rate provided by the 2018 Population Projections prepared by the City, a
straight-line extrapolation of water meters and wastewater accounts were calculated for the year
2028. Living unit equivalents were then applied to the water meters and wastewater accounts
for 2018 and 2028 resulting in a total number of living units. The difference in the total
number of 2018 and 2028 living units results in the new living unit equivalents during the
impact fee period. The calculation of living unit equivalents is summarized in Table 8 and
Table 9.
•
j:\clerical\wylie\2018-118 w&ww-thoroughfare-impact fee\cip & impact fee\reports\03-report.doc — 21 -
Birkhoff Hendricks & Carter, L.L.P.
1
TABLE 8
Water Living Unit Equivalents 2019 - 2029
Meter Size
2019
2029
New
SFLUE's
During
Impact Fee
Period
Number
of Water
Meters
Living Unit
Equivalent
Ratio for 1"
Used
Total
Number
of Living
Units
Number
of Water
Meters
Living Unit
Equivalent
Ratio for 1"
Used
Total
Number
of Living
Units
5/8" & 3/4"
12,510
1.0
12,510
14,118
1.0
14,118
1,608
1"
214
1.7
363
242
1.7
410
47
1-1/2"
19
3.3
62
21
3.3
70
8
2"
274
6.7
1,835
309
6.7
2,071
236
3"
8
16.0
128
9
16.0
144
16
4"
12
28.0
336
14
28.0
379
43
6"
9
61.3
551
10
61.3
622
71
8"
2
106.7
213
2
106.7
240
27
Totals
13,048
15,998
14,725
18,054
2,056
TABLE 9
Wastewater Living Unit Equivalents 2019 - 2029
Meter Size
2019
2029
New
SFLUE's
During
Impact Fee
Period
Number
of Water
Meters
w/Sewer
Accounts
Living Unit
Equivalent
Ratio for 1"
Used
Total
Number
of Living
Units
Number
of Water
Meters
w/Sewer
Accounts
Living Unit
Equivalent
Ratio for 1"
Used
Total
Number
of Living
Units
5/8" & 3/4"
15,803
1.0
15,803
17,834
1.0
15,780
2,031
1"
214
1.7
363
242
1.7
411
48
1-1/2"
19
3.3
62
21
3.3
69
7
2"
274
6.7
1,835
309
6.7
2,070
235
3"
8
16.0
128
9
16.0
144
16
4"
12
28.0
336
14
28.0
392
56
6"
9
61.3
551
10
61.3
613
62
8"
2
106.7
213
2
106.7
213
0
Totals
14,532
17,482
16,387
19,692
2,455
j:\clerical\wylie\2018-118 w&ww-thoroughfare-impact fee\cip & impact fee\reports\03-report.doc - 22 -
Birkhoff, Hendricks & Carter, L.L.P.
VI. WATER DISTRIBUTION SYSTEM
Birkhoff, Hendricks & Carter, L.L.P. Professional Engineersprepared computer models for the
years 2018 and 2028. The models were developed from the 2018 Population Projections
provided by the City of Wylie. The land areas follow closely to the construction of major
facilities in the system as outlined in Figure 2. These facilities include major distribution lines,
pump stations, ground storage reservoirs and elevated storage tanks. All computer models were
run for the Maximum Hourly Demand and the Minimum Hourly Demand to insure proper
sizing of the facilities to meet peak demand periods.
A. Existing Pump Stations, Ground Storage Reservoirs & Elevated Storage Tanks
Table 10 outlines a summary of the City's existing water facilities.
TABLE 10
Water Distribution System -- Existing Pump Stations & Ground Storage
Pump Station
Total
Number
of
Pumps
Rated
Capacity.
(MGD)
Number of
Ground "
Storage
Tanks
Total
Ground Storage
Available
(Gallons)
Nortex
5
9.20
2
2,500,000
East Brown
5
10.64
1
1,500,000
Newport Harbor
4
11.73
1
2,000,000
Total:
4
6,000,000
Elevated Storage Tanks Capacity in Gallons
Creekside Elevated Storage Tank 2,000,000
South Ballard Elevated Storage Tank 250,000
Regency (Decker) Elevated Storage Tank 750,000
Total 3,000,000
The pump stations and ground storage facilities were analyzed with the maximum daily demand,
while elevated storage act dynamically and are therefore analyzed utilizing the difference between the
Maximum Hourly Demand and the Maximum Daily Demand.
B. Distribution Lines
The distribution lines consist of all lines within the service area boundary supplying water
to customers in the City of Wylie. Lines vary in size from 5/8-inch and 3/4-inch services to
j:\clerical\wylie\2018-118 w&ww-thoroughfare-impact fee\cip & impact fee\reports\03-report.doc - 23 -
Birkhoff, Hendricks & Carter, L.L.P.
1
1
1
24-inch transmission lines. Only those water lines 12-inches and larger in diameter were
considered in the Impact Fee calculations. The cost of water lines includes the
approximate construction cost, appurtenances (water valves, fire hydrants, taps and the
like), utility relocations, purchase of easements, and engineering costs in 2018. Financing
cost over a 20-year term with an assumed bond rate of 5% is included for each project.
Unit cost for proposed capital improvement water lines 12-inches and larger in diameter
were classified as City initiated water lines including the full cost of the facility. Developer
initiated water line projects, 12-inches or less in diameter, are not included in this Impact
Fee analysis, as the cost for these size lines are the responsibility of the developer.
C. Water Supply
The City of Wylie currently receives all of its water supply from the North Texas
Municipal Water District (NTMWD). Wylie's allocation of the capital cost of services as a
customer of the NTMWD was specifically excluded from the impact fee analysis.
If included, Wylie's share of the NTMWD capital cost could include the original
construction cost, expansion cost, financing cost, engineering cost and real estate cost of
the following components:
1) Water Rights Cost in Lake Lavon and Other Reservoirs
2) Raw Water Intake Structures
3) Raw Water Pump Stations
4) Water Treatment Plant and Expansions
5) High Service Pump Stations
6) Transmission Lines
7) NTMWD Owned Ground Storage Facilities
8) Metering Facilities
j:\clerical\wylie\2018-118 w&ww-thoroughfare-impact fee\cip & impact fee\reports\03-report.doc - 24 -
Birkhoff, Hendricks & Carter, L.L.P.
D. Water Distribution System Capital Improvement Projects
In order to meet the demands of the anticipated growth over the next 10-years, as provided
in the 2018 Population Projections, certain water distribution system improvements are
required. Figure 2 shows the recommended system improvements and Table 11 itemizes
each project and the project cost. These recommended improvements assist to form the
basis for the Water System Impact Fee Calculation.
Actual capital cost, including construction, engineering and easements of the various
elements of the existing water distribution system was utilized where the information was
known. The existing cost of facilities was determined from records provided by the City of
Wylie. Where actual costs are not known, an average cost in 2018 dollars has been
calculated. The average unit cost is from a limited survey of projects, which bid recently,
plus an estimated cost for engineering and easements. There are many variable factors that
can have a significant impact on the actual construction cost of a project such as local
conditions, material cost increases and fuel cost increases to name a few.
The capital improvement plan provides for system improvements within the defined service
area. Some of the system improvements may be physically located beyond the boundaries
of the services area; however, they are necessary to provide adequate system service and
capacity.
j:\clerical\wyle\2018-118 w&ww-thoroughfare-impact fee\cip & impact fee\reports\03-report.doc - 25 -
1
1
411
CREEKSG I —
_ 41�
ELEVATED STORAGEORAGETPNK
(ENE-0) 1' �'
EXISTING NEWPORT
HARBOR PUMP STATION
• GSR 01(EVW-1)
• PUMP STATION
(ENF-2)
• PROPOSED GSR 92
(PWF 2f ,
Y
EL6
L11
j7 EXISTING NORTE% PUMP STATION
• PUMP STATION(EWPJ)
'l• GSR01(EVW4)
• GSM (ENES)
MO IX! 2,
•
PROPOSED SOLON BALLARD
1.5 MG ELEVATED STORAGE
TANK (PAPA)
)
DUSTING EAST BROWN STREET
PIMP STATION
• PUMP STATION (ENF6)
• GSR 91 (EVW.7)
• NIMYA METER VAULT(ENF-0
IN
CITY OF
WYLIE
LEGEND
•---- WYLIE CITY LIMITS
—�---- WYLIE CCN BOUNDARY
— —. SEANCE AREA BOUNDARY
EXISTING WATERLINE -NO IMPACT FEE
E105TINO WATERLINE IMPACT FEE
(PIPE NO.)
PROPOSEDWATERLINE IMPACT FEE
T (PIPE NO.)
EXISTING JUNCTION NODE
kff
1
EXISTING ELEVATED STORAGE TANK
(PROJECT NO.)
EXISTING ELEVATED STORAGE TANK
TO BE ABANDONED
PROPOSED ELEVATED STORAGE TANK
(PROJECT NO.)
EXUSTING PUMP STATION
(PROJECT NO.)
SOLE 1••35W
WATER DISTRIBUTION SYSTEM
CAPITAL IMPROVEMENT PLAN
AND RECOVERY MAP
emlrnon. ReNBRIGYS LS,.
Ian= FM
FIGURE 2
. \aALALIP."=.` fl10_ :0 si7.s-iW 10oe-A ' fz\R%R tra=. F.e`,
1
x>\iNe X - 600 .--. ter LH<y
16
Birkhoff, Hendricks & Carter, L.L.P.
TABLE 11
CITY OF WYLIE TEXAS
2018-2028 WATER & WASTEWATER IMPACT FEE
10-YEAR CAPITAL IMPROVEMENT PLAN
PROPOSED Water System (Capital Improvement Plan)
Project
ID
Project
Total -
Capital
Cost (I)
Debt
Service tz>
Total Project Cost
(8)
10-Year Utilized
Capacity
Cost ($)
PROPOSED FACILITIES
PWF-1
South Ballard 1.5 MG EST
$4,715,000
$2,851,876
$7,566,876
$7,566,876
PWF-2
Newport Harbor 1.0 MG GSR
$2,300,000
$1,391,159
$3,691,159
$3,395,866
SUBTOTAL:
$7,015,000
$4,243,035
$11,258,035
$10,962,742
PROPOSED WATER DISTRIBUTION LINES
Ll
Southwest 12-Inch Connector [679 Service Area]
$488,000
$295,168
$783,168
$783,168
L2
State Highway 78 Distribution Line No. 2 [679 Service Area]
$573,400
$346,822
$920,222
$920,222
L3
Cotton Belt Avenue Water Line [679 Service Area]
$133,000
$80,446
$213,446
$210,092
L4
State Highway 78 & Spring Creek Parkway Loop [679 Service Area]
$976,000
$590,336
$1,566,336
$1,566,336
L5
24-Inch Distribution Line from Ballard Elevated Tank
$60,000
$36,291
$96,291
$96,291
SUBTOTAL:
$2,230,400
$1,349,063
$3,579,463
$3,576,109
WATER SYSTEM PLANNING EXPENSES
Water System Master Plan
$37,700
$0
$37,700
$37,700
Water &Wastewater Systems Impact Fee Review
$31,300
$0
$31,300
$31,300
SUBTOTAL:
$69,000
$0
$69,000
$69,000
PROPOSED WATER SYSTEM TOTAL:
$9,314,400
$5,592,098
$14,906,498
$14,607,851
j:\clencal\wylie\2018-118 w&ww-thoroughfare-impact fee\cip & impact fee\reports\03-report.doc - 27
Birkhoff, Hendricks & Carter, L.L.P.
1
Utilized Capacity
Utilized capacity for the water distribution system was calculated based on the water line
size required for each model year (2018, 2028 and build out). Master planning of the water
distribution system is based on the maximum daily demand, maximum hourly demand, and
the minimum hourly demand. Pump station capacity is generally based on the maximum
daily system demand while transmission and distribution facilities are sized based on either
the maximum hourly demand or the minimum hourly demand, whichever demand is
greater for a particular water line. Often, the capacity of a water line is determined by the
flows generated by the minimum hourly demand. The minimum hourly flows are usually
higher in those lines that are used to refill elevated storage. For each line segment in the
water distribution model, the build -out flow rate in the line was compared to the flow rate
in the same line segment for the 2018 and the 2028 models.
The percentage of utilized capacity was calculated for each year based on the build -out
capacity. The utilized capacity during the Impact Fee period is the difference between the
year 2028 capacity and the year 2018 capacity. Table 12 below summarizes the total 20-
year project cost and utilized cost over the impact fee period of 2018 - 2028 for each
element of the Water Distribution System. The total 20-year cost includes financing cost
over a 20-year term with an assumed bond rate of 5%. The utilized capacity for each water
distribution facility, both existing and proposed, is presented in detail in Impact Fee
Capacity Calculation Tables 13, 14, and 15.
TABLE 12
Summary of Eligible Capital Cost and Utilized Capacity Cost
Water System Facility
Tota120-Year
Project Cost
Utilized
Capacity ($) in the
CRP Period
Existing Water Lines
$9,579,634
$980,204
Existing Water Facilities
$23,805,756
$2,069,874
Proposed Water Facilities
$11,258,035
$10,962,742
Proposed Water Lines
$3,579,463
$3,576,109
Planning Expenses
$69,000
$69,000
Total
$48,291,888
$17,657,929
j:\clerical\wylie\2018-118 w&ww-thoroughfare-impact fee\cip & impact fee \reports\03-repart.doc - 28 -
8h0be,, Hendricks Correa L1.P.
Y8^2019
TABLE 13
CITY OF WYLIE, TEXAS
2018-2028 WATER DISTRIBUTION IMPACT FEE STUDY
EXISTING WATER FACILITIES
-
Project No.
- _
- -
- -
S teni:ImprovemmU
-
Year
Cont.
-
Capacity
Cori (S) _ - - -
Capacity Utilized (%)
Capacity Utilized IS)
-
Coact.
-.Tolel"
Engineering &
Testing-
-
Project
Cost
Debt •
Service'
Interest
Rule
%
20 Year lkbl
Service Uhlmng
Simple interest
Total 20 Yr.
Project Cod - S
'2018
, 2028 -
to The
F'
CRP,
Period
•-2018 "
2028
In The
CRP
Period
Newport Harbor Pump Station
EWF-I
EWF-2
Ground Storage Rcsennir No. 1 1
Pump Station 2
2010
2018
2.0 MG
11.7 MOD
S1,868,862
$809 953
$70,200
$86.950
S1,939,062
S896,903
5.0%
5.0%
$1,172,845
$542,493
53,111,907
7918
79%
92%
92%
13%
13%
$2,458,407
51,137,123
S2,862,954
51,324,244
3404,547
$187,121
$1,439,396
Subtotal Newport Harbor Pump Station:
52,678,81.5
$157,150
S2,1335,963
I S1,713,338 ( $4,551,303
53,595,530 54,767,198 5591,668
Nodes Pump Station
EWF-3
EWF4
EWF-5
Pump Station 3
Ground Storage Reservoir No. 1 4
Ground Storage Reservoir No. 2 5
2007
2010
2018
9.2 MGD
13 MG
1.0 MG
$1,130,939
S1,801,142
52,007,247
$95,000
S70,200
$127,950
81,225,939
$1,871,342
S2,135,197
5.0%
3.0%
5.0%
$741,511
51,131,884
$1,291,478
S1,967,430
33,003,226
S3,426.673
94%
94%
94%
100%
100%
100%
-
6%
6%
6%
31,849,403
$2,823,032
$3,221,075
51,967,450
53,003,226
S3.426.675
$118,047
S180,194
5205,600
Subtotal Norte: Pump Station:
S4,939,328
5293,I50
S3,232,478
S3,164,873
S8,397,351
�.,
S7,893,510
58,397,35I
I $503,841
East Brown Street Pump Station
IEWF-6
EWF-7
EIYF-8
Pump Stamm 6
Groud Storage Reservoir No, 1 7
WtMWD Meter Vault 8
2014
2014
2014
10.7 MGDy
1.5 MG
NA
S1,1353,140
S1,411,000
8310,375
$162,872
$123,879
527.249
82,018,012
$1,534,879
$337,624
3.0%
5.0%
5.0%
51,220,598
S928,374
5204,212
53,238,610
$2,463,233
$541,836
94%
94%
94%
100%
100%
100%
6%
6%
6%
S3,044,293
$2,315,458
S509,326
33,38,610
$2,463,253
5341,836
S194,317
5147,795
$32,510
Subtotal East Brawn 5tmet Pump Station.
53,576,515
5314,000
53,8905I
52,353,184
36,243,699
$ 869,077
S6,243,699
$374,622
Existing Elevated Storage
EWF-9
Crakside EST 9 I 2009 1 2.0
S2,728,660 8146,000 l 52,874,660 5.0% 51,738.743 S4,613,403 79% I 92% 1
13% S3,644,588 $4,244 331 5599,743
Subtotal Existing Elevated Storage:
S2,728,660 I S146,000 1 S2,874,660 I I 88,738,743 J S4,613,403 I
_
r S3,644,588 $4,244,331 55997747
1 TOTAL EXISTING WATER FACILITIES:
513,923,318 9 0,311 SI ,83 ,,18 58,972,1 8 FfX11-•Li i1
521,002,705 (523,072,579 I 52,069,874 1
• - Based on Cost Provided by the City and 2012 Impact Fw Study
CITY OF WYLIE, TEXAS
2018-2028 WATER DISTRIBUTION IMPACT FEE STUDY
PROPOSED WATER FACILITIES
"
Ptaject No.
'
'System Improvements
Projected
Year
Projected
Capacity
Cost IS)
Ci• city.Utilired %)
- Capacity Utilized (5)
"
Coosh
Engineering,
Testing and
Property
Acquisition
Told "
Project
Cost
Dcbt
Servito
Interest
Rate %
20 Year Debt
Service Utiiaing
Simple Interest
Total 20 Yr.
Project end $
-
2018
2028
1n The
- CRF
Period
1018 ,
- 2028
-
In The
CRF
' Period"
Prop osecfFadlities -_,
PWF-i
PWF-2
{t) South Dollard f.5 A4G FSl' 25
(I) Newet Harbor LO MG GSR 25
2020
2025
1-5 MG
1.0 MG
$4,100,000
$2,000,000
$615,000
5300,000
S4,715,000
$2,300,000
5.0%
5.0%
$2,851,876
$1,391,159
37,566,876
S3,691,159
0%
0%
)00%
92%
1004
92%
SO
S0
57,566,076
$3,395.866
57,566,876
$3,395,866
TOTAL PROPOSED WATER FACILITIES:
1 S6,100,1)00
5915,000
S7,015,000
1 S4,243,035
S11,258,035
I SO
510,962,742 0,962,742
(I)
G
2iCiSsesr t0Y0.3lrMWaIChmse=aeon 01.0 6Waf100AmM,000111.c ,£n4m0e0 ,00.0.0.0”.
RlrkhofJ,' Hendricks Carter, LLP.
5/&2019
TABLE 14
CITY OF WYLIE, TEXAS
2018-2028 WATER SYSTEM IMPACT FEE STUDY
Debt
(%) .Utillied,Ca achy
SS) Utilized Capaci
'
Avg. -Unit
Service
' .20 Year Debt
- Total 20 Year
''During
Pipe
Length
Diameter 'I
Date
Cost '
Total Capital
lntersest
Service Utilizing
Project
Fee
-'• -During.
ing.
Number
(FL) '
' (Inches)
-Const.
' (S%Ft.) • •
Cost, (8)
Rate %
Siinnle•lnterest
'Cost ($)
2018
2028
Period
2018 ,
2028
Fee Period '
(EL1) - East Alanis Drive Distribution Line [679 Service Area]
This
project will connect the existing 20" waterline along South Ballard Avenue to the existing 12" waterline along Alanis Drive west of Martinez Lane
(2)
P-387 1
2,090
12
$55.70
$116,423
$70,419
$186,842
82%
100%
18%
$153,211
$186,842
$33,631
(2)
P-388
420
12
$55.70
$23,396
$14,151
- $37,547
97%
100%
3%
$36,421
$37,547
$1,126
(2)
P-222
350 1
12
$55.70
$19,497
$11,793
$31,290
95%
100%
5%
$29,725
$31,290
$1,565
(2)
P-381
840
12
$55.70
$46,792
$28,302
$75,094
89%
99%
10%
$66,834
$74,343
$7,509
(2)
P-221
510
12
$55.70
$28,410
$17,184
$45,594
89%
99%
10%
$40,578
S45,138
$4,560
Subtotal:
4,210
2005 _
$234,518
5.0%
$141,849
$376,367
$326,769
S375,160
S48,391
(EL2) - Creekside (Riverchase) Distribution Line [730 Service Area]
This
roject connects the cxistin 16" waterline east of the Creekside Estates Subdivision to the existing 12" waterline at Creekside Estates Drive
(1)
P-352
2,430
20
$43.94
$106,786
$64,590
$171,376
77%
89%
12%
$131,960
$152,525
$20,565
(1)
P-199
1,670
20
$43.94
$73,388
$44,389
$117,777
80%
92%
12%
$94,222
$108,355
$14,133
(1)
P-375
2,260
20
$43.94
$99,316
$60,071
$159,387
98%
99%
1%
$156,199
$157,793
$1,594
Subtotal:
6,360
2006
$279,490
5.0%
$169,050
5448,540
5382,381
5418,673
536,292
(EL3) - McCreary Road Water Distribution Line [730 Service Area]
Thisproject connects the existing 12" waterline at the Southfork Mobile Home to the existing 12" waterline in Creekside Estates Phase 4.
(2)
P-218
1,940
16
$100.95
$195,847
$118,458
$314,305
79%
92%
13%
$248,301
$289,161
S40,860
(2)
P-371
3,120
16
$100.63
$313,962
$189,900
$503,862
79%
92%
13%
$398,051
$463,553
$65,502
(2)
P-223
340
16
$75.71
$25,743
$15,571
$41,314
86%
95%
9%
$35,530
$39,248
$3,718
(2)
P-335
2,490
20
S125.68
$312,952
$189,290
$502,242
86%
94%
8%
$431,928
$472,107
$40,179
Subtotal:
7,890
2007
$848,504
5.0%
$513,219
S1,361,723
S1,113,810
$1,264,069
$150,259
(EL4) - F M. 1378 Distribution Line (South) [730 Service Area]
This
roject connects the existin 12" waterline along F.M. 1378 at Brown Street to the existing 12" waterline in I.akeliield Drive.
(2)
P-360
840
12
572.57
560,960
536,872
897,832
100%
100%
0%
597,832
$0
(2)
SuP-153btotal:
21,67030
,8
12
2009
$72.57
$,
$193132,766_806
5.0%
$80,,,,2,
5117,200328
$310$2313,96G134
99%
100%
1%
$308$211,835003
$213$97,832
$310,966134
$
$2,131 1 13
(EL5) - South Ballard Distr'bution Line [679 Service Areal
This project connects the exis
ing 12" & 8" waterlines at the intersection of Birmingham & South Ballard to the existirig 12" waterline at Alanis Drive.
(2)
P-382
630
16
$201.46
$126,919
$76,767
$203,686
100%
100%
0%
$203,686
$203,686
50
(2)
P-369
700
16
$201.46
$141,021
$85,297
$226,318
100%
100%
0%
$226,318
$226,318
$0
(2)
P-383
610
16
$201.46
$122,890
$74,330
$197,220
93%
100%
7%
$183,415
$197,220
$13,805
(2)
9-384
570
16
$201.46
$114,832
$69,456
$184,288
65%
100%
35%
$119,787
$184,288
$64,501
S
Subtotal:
2,510
2009
$505,662
5.0%
$305,850
$811,512
$733,206
5811,512
$78,306
ACIERIrAI\Wyre\2018-116 W6W W-Thoroughfert-ImpM Fee tOP 61m W ct Ett\Pn.rtAW,M 2018 Wetec Impact rec.dsrtY_anM_R
-30-
Hlrkho.t/ Hendricks Career, L.L.Y.
5iW2019
TABLE 14
CITY OF WYLIE, TEXAS
2018-2028 WATER SYSTEM IMPACT FEE STUDY
EXISTING - WATER LINES
Pipe ,
Number
Length
(Ft.)
Diameter
' (Inches)
Date of
Const.
Avg. Unit,
Cost .
' ($/Ft.)•
.Total Capital
Cosi' ($)
De ht
Service
Intersect
Rate %.,
20 Year Debt
'Service Utilizing
Simple'Interest
(%) Utilized Ca city
S) Utilized Capaci '
Totu120 Year "
Project
- -Cost (S) -
2018"
,2028 =•'Period
During
Fee
2018 . ,
" 2028
During
.Fee Period
(EL6) - Spinnaker Way Water Line [730 Service Area]
This project connects the existing 18" waterline at -Anchor Drive to'the existing 12" waterline at Coral Reef Lane.
(2)
P-372
750
12
$177.31
$132,983
$80,435
$213,418
95%
100%
5%
$202,747
S213,418
$10,671
Subtotal:
750
2009
$132,983
5.0%
$80435
5213,418
5202,747
5213,418
510,671
(EL7) - F M. 1378 Distribution Line (North) [730 Service Area]
This project connects the existing 12" waterline at Anchor Drive to the existing 12" waterline along
F.M. 1378 at McMillen Road.
(2)
P-399
700
20
$166.34
$116,438
$70,428
$186,866
100%
100%
0%
$186,866
$186,866
SO
(2)
P-386
490
18
$149.70
$73,353
$44,368
$117,721
74%
92%
18%
$87,114
$108,303
$21,189
(2)
P-025
1,020
18
$149.70
$152,694
$92,357
$245,051
76%
92%
16%
$186,239
$225,447
$39,208
(2)
P-024
980
18
$149.70
$146,706
$88,735
$235,441
69%
89%
20%
$162,454
5209,542
$47,088
(2)
P-403
1,600
18
$149.70
$239,520
$144,874
$384,394
78%
94%
16%
$299,827
$361,330
$61,503
(2)
9-155
2,320
16
$133.07
S308,722
$186,731
$495,453
88%
99%
11%
S435,999
$490,498
S54,499
(2)
P-154
2,170
12
$99.80
$216,566
$130,990
$347,556
87%
99%
12%
$302;374
$344,080
$41,706
Subtotal:
9,280
2010
$1,254,000
5.0%
S758,483
52,012,482
S1,660;873
S1,926,066
5265,193
(EL8) - West Brown Distribution Line [679 Service Area]
This project connects the existing 12" waterline at FM 1378 and connects the existing 12" waterline at Sanden & Ann Drive to the existing 12" waterline at Wes Rate Way.
(2)
P-391
1,050
12
$75.13
$78,887
$47,715
S126,602
0%
100%
100%
50
$126,602
$126,602
(2)
9-396
300
12
$75.13
$22,539
$13,633
$36,172
100%
100%
0%
$36,172
536;172
$0
(2)
P-407
1,040
12
$75.13
$78,136
$47,261
$125,397
89%
100%
11%
$111,603
$125,397
S13,794
(2)
9-151
1,930
12
$75.13
$145,003
$87,705
S232,708
0%
100%
100%
$0
$232,708
$232,708
(2)
P-404
1,280
12
S75.13
$96,168
$58,167
$154,335
100%
100%
0%
$154,335
$154,335
50
Subtotal:
5,600
2012
S420,733
5.0%
$254,481
S675,214
$302,110
$675,214
$373,104
(EL9) - East Brown Distribution Line [679 Service Areal
Thisproject connects the existing 12" waterline at SH 78 to the existing 12" waterline in Eubanks Way.
(2)
P-430
920
24
$219.56
$201,995
$122,177
$324,172
100%
100%
0%
$324,172
$324,172
30
(2)
9-012
2,550
24
$219.56
$559,877
$338,643
$898,520
100%
100%
0%
$898,520
$898,520
$0
(2)
P-365
320
24
$219.56
$70,259
S42,496
$112,755
100%
100%
0%
$112,755
$112,755
$0
Subtotal:
3,790
2012
S832,131
5.0%
$503,316
S1,335,447
S1,335,447
$1,335,447
$0
(EL10) - State Highway 78 Distribution Line No. 1 [679 Service Area]
This project connects the existing waterline near Birmingham Avenue to the existing 12" waterline in East Brown Street.
(2)
9-374
920
20
$245.92
$226;249
$136,847
$363,096
100%
100%
0%
$363,096
$363,096
$0
(2)
9-376
1,650
20
$245.92
$405,773
S245,433
$651,206
100%
100%
0%
$651,206
$651,206
$0
(2)
9-379
460
12
$245.92
$113,125
$68,424
$181,549
100%
100%
0%
$181,549
$181,549
$0
(2)
P-402
1,320
24
$245.92
$324,619
$196,346
$520,965
100%
100%
0%
$520,965
$520,965
$0
Subtotal:
4,350
I012
$1,069,766
5.0%
$647,050
$1,716,816
S1,716,816
$1,716,816
$0
l:Kln°CAUW,reVoj m WSW W-TMmteM•r¢ampxl Fee\ & Impart i¢¢\.RA, AWyr• :°IB Wlk, impact ierxhaWyMx_a
-31-
Blrkhoff Heads* Carter, LLP.
5/8/2019
TABLE 14
CITY OF WYLIE, TEXAS
2018-2028 WATER SYSTEM IMPACT FEE STUDY
EXISTING - WATER LINES
Pipe
' Number.
•Length -
(Ft) '
Diameter
(Inches)
Diite of
'Coast
. Mi.-Mile
Cosh
(SiFt.)
7otal'Capital
Cost. ($)
0elit
Service '
Intersest
Rate %
• 20 Year. Debt
Service Utilizing
-Simple Interest
' Total 20 Year
Project
'Cost ($) -
, - (%) .UtIlized..Ca achy
$)' Utilized Capac
• 2018-
' 2028.
During,
Fce -
Period
2018
2028
During
' Fee Period '
(EL11) - Spinnaker Way 12-Inch Water Line [730 Service Area]
This roject connects the existing 8" waterline at Windward Lane to the existing 8" waterline'at Coral Reef Lane.
(2)
P-406
450
12
$439.15
$197,619
$119,530
$317,149
95%
100%
5%
$301,292
5317,149
515,857
Subtotal:
450
2012
5197;619
5.0%
5119,530
5317,149
$301,292
$317,149
$15,857
TOTAL EXISTING WATER LINES:
47,860 I
$5,969,172
$3,610,463
$9,579,634
$8,384,286
$9,364,490
$980,204
1 - City Participte in Cost Oversize
2 - City Initiated and Funded
- Based on Cost Provided by the City and 2012 Impact Fee Study
\QENIGI\W'A4\241a.118W8WW.Thomughlue;mpac, Fee\228, Impact th\Reports \ Wyte 2018 Water Impact fco 0 W Unes—N
-32-
TABLE 15
CITY OF WYLIE, TEXAS
2018-2028 WATER SYSTEM IMPACT FEE STUDY
PROPOSED CIP - WATER LINES
• * Average Unit costs are based in 2018 dollars unless otherwise indicated and includes 20%for engineering anrt easements.
!Jirkhofj, Hendricks Carter, L.L P.
5/8/2019
Pipe
Number
Length
=(FL)
Diameter
(Inches)
Avg. Unit
Cost
(S/Ft.)
'rotaLCapital
Cost ($)
Debt -
Service
Interest
Rate %
20 Year Debt
Service Utilizing.
Simple Interest
'TotP1.20 Year
.Project
Cost ($)
(%)' Utilized Capacity
SS) Utilized Capacity '
2018
2028
During
Fee Period
2018
2028
During .
Fee Period
(L1) - Southwest 12-Inch Connector [679 Service Area]
This project connects the 12" wa erline on McCreary Road to the 12" waterline on Springwell Parkway
(2) P-310
Subtotal:
4,000
4,000
12
$122.00
$488,000
S488,000
5.0%
$295,168
S295,168
$783,168
S783,168
0%
100%
100%
$0
S0
$783,168
$783,168
$783,168
$783,168
(L2) - State Highway 78 Distribution Line No. 2 [679 Service
This project connects the existing 12" waterline in East Brown Street to the existin
Areal
12" waterline in Eubanks Lane
(2) P-377
(2) P-378
Subtotal:
1,700
3,000
4,700
12
12
$122.00
$122.00
$207,400
$366,000
S573,400
5.0%
$125,446
'$221,376
$346,822
$332,846
$587,376
$920,222
0%
0%
100%
100%
100%
100%
$0
$0
20
$332,846
$587,376
$920,222
$332,846
$587,376
$920,222
(L3) - Cotton Belt Avenue Water Line [679 Service Area]
This project replaces an existing 4" and 1" waterline along Cotton Belt Avenue.
(2) P-393
(2) P-397
Subtotal:
600
800
1,400
8
8
$95.00
$95.00
$57,000
$76,000
$133,000
5.0%
$34,477
$45,969
S80,446
$91,477
$121,969
$213,446
0%
0%
99%
98%
99%
98%
$0
$0
SO
$90,562
$119,530
S210,092
$90,562
$119,530
S210,092
(L4) - State Highway 78 & Spring Creek Parkway Loop
This project at an existing 12" waterline on Spring Creek Parkway and extends
[679 Service Area]
east. Then extends south to Stale Highway 78. Then extends
along State
Highway 78
to connecto to an existing waterline
on Spring Creek Parkway.
(2) P-347
(2) P-348
(2) P-349
Subtotal:
3,200
1,400
3,400
8,000
12
12
12
$122.00
$122.00
$122.00
$390,400
$170,800
$414,800
$976,000
5.0%
$236,134
$103,309
$250,893
$590,336
$626,534
$274,109
$665,693
$1,566,336
0%
0%
0%
100%
100%
100%
100%
100%
100%
$0
$0
$0
20
$626,534
$274,109
$665,693
S1,566,336
$626,534
$274,109
$665,693
$1,566,336
(L5) - 24-Inch Distribution Line
This project connects the proposed Ballard 1.5
from Ballard Elevated Tank
MG elevated storage lank to an existing 16-inch water line on Ballard Ave.
(2) P-060
Subtotal:
200
200
24
$300.00
$60,000
S60,000
5.0%
$36,291
$36,291
$96,2914 0%
296,291-
100%
100%
$0
$0
$96,291
S96,291
$96,291
$96,291
TOTAL PROPOSED
WATER
I 18,300
LINES:
1
$ 2,230,400
$ 1,349,063
$ 3,579,463
$ -
$ 3,576,109
$ 3,576,109
(1) - City Participate in Cost Oversize
(2) - City Initiated and Funded
B - Bore Across State Highway or Interstate
P - Parallel Water Line
$ - Based on Actual Bid Price
R-Replacement
iletr:tnvalwrrouwaiiewaymatmwrnrare.i, ..f.\aasimp.nreyep.n.lwimtwewaterirnP.sreeY+.w_ane� av
INN
Birkhoff, Hendricks & Carter, L.L.P.
1
VII. WASTEWATER COLLECTION SYSTEM
A. General
At this time, most of the wastewater generated in the City of Wylie (concentrating in
areas adjacent to the present city center) flows by gravity and a combination of lift
stations and force mains to the Muddy Creek Regional Wastewater Treatment Plant
(operated by the NTMWD) southwest of the City center. The Wylie Wastewater
Treatment Plant located near the center of the City was decommissioned. A small
amount of current wastewater flow is handled through local residential septic systems.
The average daily flow capacity of the new Muddy Creek Regional Wastewater
Treatment Plant is 10.0 MGD and the peak flow capacity is 30.0 MGD.
This impact fee study considers no significant development in the Lake Ray Hubbard
Collection Basins prior to 2029. Therefore, infrastructure improvements are not planned
or included in the impact fee calculation.
Muddy Creek, Cottonwood Creek and Rush Creek Basins are anticipated growth areas.
1) Muddy Creek: Muddy Creek includes the bulk of the existing development and
produces the predominant volume of wastewater flow. The Muddy Creek Basin will
add approximately 3,895 to the population by 2029.
2) Cottonwood Creek: Generally south of the City center is an expected growth area
where approximately 919 will be added to the population by 2029.
3) Rush Creek: Generally east of the City center is an expected growth area where
approximately 1,234 will be added to the population by 2029.
B. Collection Lines
The wastewater collection system analysis is a static analysis covering all of the drainage
basins within the study area. The wastewater project cost includes necessary
appurtenances, purchase of easements, utility relocation, pavement removal and
replacement, and engineering costs. For existing Impact Fee projects, actual costs were
utilized where known. Future project cost estimates were based on budget information
provided by the NTMWD and include engineering, construction and inspection costs
when provided.
The natural ground in the area to be served by the Wylie Wastewater Collection System
varies in elevation from approximately 460 feet above mean sea level near the Muddy
j:\clerical\wylie\2018-118 w&ww-thoroughfare-impact fee\cip & impact fee\reports\03-report.doc - 34 -
Birkhoff, Hendricks & Carter, L.L.P.
Creek Regional Wastewater Treatment Plant to 620 feet above mean sea level near the
northwest City Limit. There is a natural divide running generally North to South near the
Wylie city center (following Ballard Avenue to the Pleasant Valley Road).
The land on the west side of this divide generally falls to the southwest and includes five
main basins. These basins are (from south to north) Lower Muddy Creek, Tributary 1 to
Muddy Creek, Tributary 2 to Muddy Creek, Tributary 3 to Muddy Creek and Upper
Muddy Creek. The natural creeks, whose basins will collect wastewater through the
installed system of trunk lines, flow into the geographic area normally serviced by the
North Texas Municipal Water District.
The fall of the land on the east side of this divide is to the southeast and includes three
main basins. The basins are Cottonwood Creek (near the City center), Rush Creek (east
of the City center) and Tributary 1 to Rush Creek (east of the main channel). These
basins flow naturally into Lake Ray Hubbard. Flows in the City of Wylie service areas
are collected in Lift Stations at the downstream limit of the service area and lifted over to
the Muddy Creek basin.
C. Treatment
The Wylie Wastewater Treatment Plant is located just north of Alanis Drive and west of
Ballard Avenue. Currently, this plant no longer serves the City and was decommissioned.
The Muddy Creek Regional Wastewater Treatment Plant was constructed southwest of
the City center near Lake Ray Hubbard. An expansion of the Muddy Creek Regional
Wastewater Treatment Plant was completed several years ago and additional expansions
are anticipated over the next five years. The North Texas Municipal Water District
operates the Muddy Creek Regional Wastewater Treatment Plant.
D. Capital Improvement Program
The existing wastewater collection system is adequately designed to accommodate the
growth expected within the impact fee period; therefore, no improvements are required
based on the current projections. However, the current NTMWD wastewater treatment
plant is reaching capacity and the NTMWD plans to expand the capacity to accommodate
future growth. Due to this circumstance, there only new improvement shown in Table 15
is the City's percentage of the flow contribution times the cost of the expansion and the
portion predicted to be used for new development over the 10-year CIP period.
j:\clerical\wylie\2018-118 w&ww-thoroughfare-impact fee\cip & impact fee\reports\03-report.doc - 35 -
Birkhoff, Hendricks & Carter, L.L.P.
1
1
1
E. Utilized Capacity
The Land Use Assumptions from the City of Wylie were utilized to calculate the utilized
capacity for the wastewater collection system based on land absorption from population
growth projections. The population and employment growth in each wastewater drainage
basin were determined based on the City's growth projections. These growth rates were
utilized to calculate 2018 and 2028 design flows. The following summarizes each design
flow component utilized to calculate the wastewater design flows.
1) Population Based Flow: For the purpose of this wastewater impact fee study an
average per capita flow of 110 gallons per day (gpcd) is a reasonable basis for the
design of the wastewater collection and treatment facilities. Peak flows associated
with this per capita rate have been estimated for various segments of the collection
system by using the following formula PF = ((5/(population/1000)^0.167). The
formula takes into account the estimated population, and, indirectly, the area of the
drainage basin to be served. This method gives a ratio of peak to average flows
varying from a maximum of 5.0 times the average flow for a population of 1,000 or
less to 2.32 times the average flow for a population of 93,700 (includes 18,000 for
the City of Murphy also served at the Muddy Creek Regional WWTP).
Non -Population Based Flow: Non-residential average flows are estimated based on
an average daily flow per acre for each non-residential land use category. The
following were used for average daily flow per acre for each category:
Business/Commercial Corridor: 1,600 gallons
Neighborhood Services: 1,200 gallons
Heavy Industrial: 2,400 gallons
Parks/Open Space: 5 gallons
•
... Commercial/Retail: 1,400 gallons
Public/Semi Private: 1,000 gallons
Light Industrial: 2,000 gallons
Floodplains: 0.01 gallons
A 2.0 Peaking factor was used for each non-residential land use. The combination
of per capita and non-residential based flow is the basis for aggregate dry weather
flow in the basins.
3) Infiltration and Inflow: Groundwater can infiltrate into the sanitary sewer system
through faulty sewer pipe joints, tree roots, breaks in sewer pipes and manholes and
faulty service lines. Infiltration creates an average day flow related burden on
wastewater collection systems and treatment plants. Infiltration is fairly constant
and not necessarily based on temporary storm events. Normal plant capacity must
j:\clerical\wylie\2O18-118 w&ww-thoroughfare-impact fee\cip & impact fee\reports\03-report.doc - 36 -
Birkhoff, Hendricks & Carter, L.L.P.
be designed to handle infiltration related flows. The City is in the process of
completing a program to evaluate the actual flow rates of major system gravity
sewers and may embark on a program to rehabilitate lines that contribute significant
infiltration volumes when economically and environmentally feasible, and/or
desirable.
Inflow is generally related to storm events that increase groundwater and surface
water flow into the sanitary system. The additional flow is generally recognized to
enter through manholes, service lines, roof drains and storm drains. Inflow related
flows could cause surcharged sewers, overflows at manholes and peak flows to
surpass the capacity of the treatment plant. The wastewater collection system
planning calculations include a combined infiltration and inflow rate of 400 gallons
per acre per day (gpad) for the entire wastewater service area. This flow is not
peaked.
The percentage of utilized capacity was calculated for the design flow of each study year
based on the build -out capacity. The utilized capacity during the Impact Fee period is the
difference between the year 2018 capacity and the year 2028 capacity. Table No. 16
below summarizes the project cost and utilized cost over the impact fee period of 2018 -
2028 for each element of the wastewater system. The utilized capacity for each existing
wastewater facility and collection line is presented in detail in Impact Fee Capacity
Calculation Tables 17 and 18.
TABLE 16
Summary of Eligible Capital Cost and Utilized Capacity Cost
Wastewater System Facility
20-Year or Outstanding
Project Cost
Utilized
Capacity ($) in the
CRP Period
Existing Wastewater Collection
Lines
$4,362,263
$1,090,566
Existing WW Treatment Facilities
(Wylie Share)
$3,188,000
$ 478,200
Proposed WW Treatment Facilities
(Wylie Share @ 69.5% Flow)
$11,668,355
$2,917,089
Planning Expenses
$11,000
$5,000
Total
$19,230,618
$6,081,698
j:\clerical\Mrylie\2018-118 w&ww-thoroughfare-impact fee\cip & impact fee\reports103-report.doc — 37 -
MIN
BirkhoJj,
7/9/2019
TABLE 17
CITY OF WYLIE, TEXAS
WASTEWATER COLLECTION SYSTEM IMPACT FEE STUDY
EXISTING CIP - WASTEWATER FACILITIES
. Improvements
. Year .
Const.
Projected
Capacity
(MGD).
Facility Cost ($)
Capacity Utilized (%)
Capacity Utilized ($
' . Const.
Debt
Service
Interest
Rate %
20 Year Debt
Service Utilizing
Simple Interest
Total 20 Yr.
Project Cost $
2018
2028
In The
CRF
Period
_
2012
2022
In The
CRF
Period
Wastewater Treatment Facilities
NTMWD Muddy Creek WW Treatment Plant Expansion 1
2012
10.00
$3,188,000
$0
$3,188,000
85.0%
100.0%
15.0%
$2,709,800
$3,188,000
$478,200
NTMWD Muddy Creek WW Treatment Plant Expansion 2A (Admin)*
2020
10.00
$0
$0
$0
0.0%
100.0%
100.0%
$0
$0
$0
MGD)**
2021
15.00
$11,668,355
$0
$11,668,355
0.0%
25.0%
25.0%
$0
$2,917,089
$2,917,089
Subotal: WWTP Facilities
$14,856,355
$0
$14,856,355
$2,709,800
$6,105,089
$3,395,289
Existing Facilities Total
$14,856,355
$0
$14,856,355
$2,709,800
$6,105,089
$3,395,289
* - Construction Cost For WWTP Expansion 2A is assumed ineligible for Impact Fees (No Additional Capacity)
** - Construction Cost For WWTP Expansion 2B is based on (69.5% as Wylie flow contribution) for a 5 MGD Expansion (and 25% of use at end of 10 year CIP from growth)
1:\CLERICAL\Wylie@018-118 W&W W-Thoroughfare-Impact Fee \Wastmvatcr\Tablc 17 - WWTP utilized Capacity.xlsx - 36 -
Birkhojj, Hendricks and Carter, L.L.P.
7/9/2019
TABLE 18
CITY OF WYLIE, TEXAS
WASTEWATER COLLECTION SYSTEM IMPACT FEE STUDY
EXISTING CIP - WASTEWATER COLLECTION LINES
Pipe
Number
Length
(Ft.)
Diameter
(Inches)
Date of Const.
Avg. Unit .
Cost
($/Ft.)
Total Capital
Cost ($)
- 20 Year Debt
Service @ 5%
Simple Interest
Total 20 Year
Project
Cost ($)
(%) Utilized Ca achy
• ($) Utilized Capaci
2018 '
2028
During
Fee Period
2018
- 2028'
During
Fee Period
Twin Lakes Relief Sewer - Phase I & 11
This Project includes 12 400 LF of new 30" and 42" Trans er Sewer commencing at the Twin Lakes Lift Station and running along Pleasant Valley Road to the Muddy Creek Regional Wastewater Treatment Plant.
1 a
4,200
30
2008-2010
$182.43
$766,205
$402,258
$1,168,463
70%
95%
25%
$817,924
$1,110,040
$292,116
1 *
8,200
42
$255.40
$2,094,295
$1,099,505
$3,193,800
70%
95%
25%
$2,235,660
$3,034,110
$798,450
Subtotal:
12,400
$2,860,500
$1,501,763
$4,362,263
$3,053,584
$4,144,150
$1,090,566
Existing Wastewater Line - CIP Total
$2,860,500
$1,501,763
$4,362,263
$3,053,584
S4,144,150
$1,090,566
* - Based on Actual Bid Price
1 - City Initiated and Funded
J:ICLERJCAL1Wylie12018-118 W&WW-Thoroughfare-Impact Fee\Wastewater\Tabk 18 - Exist Wastewater Utilized Capslsx - 39 -
Birkhoff, Hendricks & Carter, L.L.P.
1
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VIII. MAXIMUM IMPACT FEE CALCULATION — WATER & WASTEWATER SYSTEM
The maximum impact fees for the water and wastewater systems are calculated separately by
dividing the cost of the capital improvements or facility expansions necessitated and
attributable to new development in the service area within the ten-year period by the number
of living units anticipated to be added to City within the ten-year period as shown on Table 8
and Table 9. To simplify collection, we recommend the fee remain fixed throughout the next
5-year period, unless changed by Council.
Water Impact Fee = Eligible Existing Utilized Cost + Eligible Proposed Utilized Cost
Number of New Living Unit Equivalent over the Next 10 Years
_ $3,050,078 + $14,607,851 = $17,657,929
2,056
Calculated Max. Water Impact Fee = $ 8,588.49
Allowable Max. Water Impact Fee: (Max Impact Fee x 50% )* =
* - Maximum allowable impact fee is 50% of the maximum calculated impact fee per Chapter 395 LGC
2,056
$ 4,294.24
Wastewater Impact Fee = Eligible Existing Facility Cost + Eligible Proposed Facility Cost
Number of New Living Unit Equivalent over the Next 10-Years
$1,573,766 +
2,455
Calculated Max. Wastewater Impact Fee = $ 1,829.27
$2,917,089 = $4,490,855
2,455
Allowable Max. Wastewater Impact Fee: (Max Impact Fee x 50%) = $ 914.63
* -Maximum allowable Impact Fee is 50% of the maximum calculated impact fee per Chapter 395 LGC.
Based on the Allowable Maximum Impact Fee Calculation for Water and Wastewater, Table
19 calculates the maximum impact fee for the various sizes of water meters.
j:\clerical\wylie12018-118 w&ww-thoroughfare-impact feelcip & impact feelreports\03-report.doc - 40 -
Birkhoff, Hendricks & Carter, L.L.P.
TABLE 19
Allowable Maximum Fee per Living Unit Equivalent
50% Maximum Water Impact Fee per Living Unit Equivalent
50% Maximum Wastewater Impact Fee per Living Unit Equivalent
$4,294.24
$ 914.63
Typical Land Use
Meter
Type
Meter
Size
Living
Unit
Equivalent
Maximum Impact Fee
Water
Sewer
Total
Single Family
Residential
Simple
5/8" &
3/4"
1.0
$4,294.24
$ 914.63
$ 5,208.87
Single Family
Residential
Simple
1"
1.7
$7,300.21
$ 1,554.87
$ 8,855.08
Single Family
Residential
Simple
1-1/2"
3.3
$14,170.99
$ 3,018.28
$ 17,189.27
Single Family
Residential
Simple
2"
5.3
$22,759.47
$ 4,847.54
$ 27,607.01
Comm./Retail
Compound
2"
5.3
$22,759.47
$ 4,847.54
$ 27,607.01
Comm./Retail
Turbine
2"
6.7
$28,771.41
$ 6,128.02
$ 34,899.43
Comm./Retail/Multi
Family
Compound
3"
10.7
$45,948.37
$ 9,786.54
$ 55,734.91
Comm./Retail/Multi
Family
Turbine
3"
16.0
$68,707.84
$ 14,634.08
$ 83,341.92
Comm./Retail/Multi
Family
Compound
4"
16.7
$71,713.81
$ 15,274.32
$ 86,988.13
Comm./Retail/Multi
Family
Turbine
4"
28.0
$120,238.72
$ 25,609.64
$ 145,848.36
Industrial
Compound
6"
33.3
$142,998.19
$ 30,457.18
$ 173,455.37
Industrial
Turbine
6"
61.3
$263,236.91
$ 56,066.82
$ 319,303.73
Industrial
Compound
8"
53.3
$228,882.99
$ 48,749.78
$ 277,632.77
Industrial
Turbine
8"
106.7
$458,195.41
$ 97,591.02
$ 555,786.43
Industrial
Compound
10"
153.3
$658,306.99
$140,212.78
$ 798,519.77
Industrial
Turbine
10"
166.7
$715,849.81
$152,468.82
$ 868,318.63
Industrial
Turbine
12"
220.0
$944,732.80
$201,218.60
$ 1,145,951.40
Note: All amounts are rounded to the nearest $0.01.
j:\clerical\wyle\2018-118 w&ww-thoroughfare-impact fee\cip & impact fee\reports\03-report.doc - 41 -
1
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1
F
WYLIE
WATER AND WASTEWATER
IMPACT FEE UPDATE
2019 - 2029
BIRKHOFF, HENDRICKS & CARTER, L.LP.
PROFESSIONAL ENGINEERS
11910 GREENVILLE AVE., SUITE 600
DALLAS, TEXAS 75243
Phone (214) 361-7900; Fax (214) 461-8390
jcarter@bhcllp.com
October 2019
$4,137.06
$876.35
Adopted Impact Fee
Typical Land Use Meter Type
Meter
Size
Living Unit
Equivalent Water Sewer Total
Single Family
Residential Simple
5/8" &
3/4"1.0 $4,137.06 $876.35 $5,013.41
Single Family
Residential Simple 1" 1.7 $7,033.00 $1,489.80 $8,522.80
Single Family
Residential Simple 1-1/2" 3.3 $13,652.30 $2,891.96 $16,544.26
Single Family
Residential Simple 2" 5.3 $21,926.42 $4,644.66 $26,571.08
Comm./Retail Compound 2" 5.3 $21,926.42 $4,644.66 $26,571.08
Comm./Retail Turbine 2" 6.7 $27,718.30 $5,871.55 $33,589.85
Comm./Retail/Multi
Family Compound 3" 10.7 $44,266.54 $9,376.95 $53,643.49
Comm./Retail/Multi
Family Turbine 3" 16.0 $66,192.96 $14,021.60 $80,214.56
Comm./Retail/Multi
Family Compound 4" 16.7 $69,088.90 $14,635.05 $83,723.95
Comm./Retail/Multi
Family Turbine 4" 28.0 $115,837.68 $24,537.80 $140,375.48
Industrial Compound 6" 33.3 $137,764.10 $29,182.46 $166,946.56
Industrial Turbine 6" 61.3 $253,601.78 $53,720.26 $307,322.04
Industrial Compound 8" 53.3 $220,505.30 $46,709.46 $267,214.76
Industrial Turbine 8" 106.7 $441,424.30 $93,506.55 $534,930.85
Industrial Compound 10" 153.3 $634,211.30 $134,344.46 $768,555.76
Industrial Turbine 10" 166.7 $689,647.90 $146,087.55 $835,735.45
Industrial Turbine 12" 220.0 $910,153.20 $192,797.00 $1,102,950.20
Note: All amounts are rounded to nearest $0.01
TABLE 19
Adopted Fee per Living Unit Equivalent
Effective for All Development with Final Plat Approval after May 11, 2020*
Adopted Water Impact Fee per Living Unit Equivalent =
Adopted Wastewater Impact Fee per Living Unit Equivalent =