HomeMy WebLinkAboutOrdinances - 2010-09 - Amending EWMC adding Chapter 12.5 through 12.60 adopting comprehensive street standards; and Chapter 16.20 through 16.24, 17.72 - 7/13/2010Ordinance 2010-09 (PC Draft 2010_0601)
Exhibit A
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Exhibit A
Section 1 - From December 16, 2009 Planning Commission Public Hearing
Findings of fact
1. The City of East Wenatchee (“City”) is a municipal corporation duly organized and
existing under the laws of the State of Washington, and particularly those set forth at
RCW Title 35A.
2. RCW 36.70A.390 and RCW 35A.63.220 permit jurisdictions to adopt development
regulations.
3. The City and Douglas County approved an Interlocal Agreement (ILA) regarding
Annexation Delivery of Services and Revenue Sharing in June of 2001. The Interlocal
Agreement was filed of record with the Douglas County Auditor on July 17, 2001,
Auditor File No. 3040321. Section 5.4 of the ILA provides for the joint review and
adoption of consistent development regulations within the East Wenatchee Urban Area.
4. The City Council and took action on June 27, 2006 to approve Ordinance No. 2006-13
adopting the Douglas County Road Standards on an interim basis. On July 28, 2009,
following a public hearing, the Council adopted Ordinance 09-08 to extend the interim
street regulations to December 27, 2009.
5. Before adoption of the Interim Street Design Standards, the City had not adopted
standards for the design and construction of private streets. The proposed standards will
codify standards for private streets.
6. The City adopted a comprehensive plan in accordance with the Growth Management Act
(GMA), RCW Chapter 36.70A, which is a generalized, coordinated land use policy
statement of the City. The City hereby finds that this development regulation amendment
is consistent with the spirit and intent of the GMA.
7. The Greater East Wenatchee Comprehensive Plan (March 28, 2006), reflects the
community’s preferred future and contains goals and policies recognizing the need for
safe and adequate streets. The goals and policies stress providing a balanced
transportation system that meets the needs of the community by accommodating the
movement of people, goods, and services and insuring that adequate and safe access is
provided to property via a system of public and private streets through the creation of
standards to regulate the development of streets.
8. The purpose of street standards is to protect the health, safety, property and welfare of the
citizens of the City by establishing standards for the design and construction of public
and private streets.
9. An Environmental Checklist was prepared on September 28, 2009. A threshold
determination and environmental review pursuant to RCW 43.21C the State
Environmental Policy Act was completed and a Determination of Non-significance
(DNS) was issued on September 28, 2009. The comment period deadline for the DNS
ended on October 12, 2009. Copies of the proposed amendments, the environmental
checklist, and DNS were sent to commenting agencies requesting their review and
comment on the proposed project. No comments were received indicating that the
proposal would have a probable significant adverse impact on the environment.
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Exhibit A
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10. Public testimony was taken at the hearing.
Conclusions
1. It is the determination of the responsible lead agency that no more than a moderate effect
on the environment is a reasonable probability as a result of the proposed action. The
proper exercise of the threshold determination process as required by WAC 197-11 is
than an environmental impact statement is not required to be prepared for this project.
2. The adoption of the proposed street standards is consistent with the Interlocal Agreement
Regarding Annexation Delivery of Services and Revenue Sharing.
3. The proposed text amendment is consistent with and implements the goals and policies in
the comprehensive plan.
4. Proper legal requirements of RCW 36.70A.106 and Title 19 EWMC were met and the
community was given the opportunity to comment on the proposal at duly noticed public
workshops and a public hearing.
5. Approval of the proposal will not be detrimental to the public health, safety, and general
welfare.
Section 2 - From June 1, 2010 Planning Commission Public Hearing on
Remand
Findings of fact
1. The City of East Wenatchee (“City”) is a municipal corporation duly organized and
existing under the laws of the State of Washington, and particularly those set forth at
RCW Title 35A.
2. RCW 36.70A.390 and RCW 35A.63.220 permit jurisdictions to adopt development
regulations.
3. The East Wenatchee Planning Commission held a public hearing on November 30, 2009
for consideration of the proposed street standards. Public testimony was provided at the
hearing. The hearing was continued to December 16, 2009 for a decision. Final decision
at the December 16, 2009 hearing resulted in a recommendation of approval from the
planning commission.
4. The City Council discussed the proposed text amendments and took action to remand the
proposed Comprehensive Street Standards back to the planning commission on May 11,
2010 for additional clarification of sections 12.53.010(B)(4) relating to driveway spacing
from intersections and 12.53.010(C)(2) relating to driveway width.
5. The Greater East Wenatchee Comprehensive Plan (March 28, 2006), reflects the
community’s preferred future and contains goals and policies recognizing the need for
safe and adequate streets. The goals and policies stress providing a balanced
transportation system that meets the needs of the community by insuring that adequate
and safe access is provided to property.
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Exhibit A
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6. The purpose of street standards is to protect the health, safety, property and welfare of the
citizens of the City by establishing standards for the design and construction of public
and private streets.
7. An Environmental Checklist was prepared on September 28, 2009. A threshold
determination and environmental review pursuant to RCW 43.21C the State
Environmental Policy Act was completed and a Determination of Non-significance
(DNS) was issued on September 28, 2009. No comments were received indicating that
the proposal would have a probable significant adverse impact on the environment. The
DNS remains timely for the proposed amendment.
8. The original findings and conclusions supporting the planning commission
recommendation remain timely and in effect.
9. Public testimony was taken at the hearing. The main concerns expressed were: Rules too
stringent and expensive for the homeowner.
Conclusions
1. It is the determination of the responsible lead agency that no more than a moderate effect
on the environment is a reasonable probability as a result of the proposed action. The
proper exercise of the threshold determination process as required by WAC 197-11 is that
an environmental impact statement is not required to be prepared for this proposal.
2. The adoption of the proposed street standards is consistent with the Interlocal Agreement
Regarding Annexation Delivery of Services and Revenue Sharing.
3. The proposed amendment to the text is consistent with and implements the goals and
policies in the comprehensive plan.
4. Proper legal requirements of RCW 36.70A.106 and Title 19 EWMC were met and the
community was given the opportunity to comment on the proposal at a duly noticed
public hearing.
5. Approval of the proposal will not be detrimental to the public health, safety, and general
welfare.
Ordinance 2010-09 (PC Draft 2010_0601)
Exhibit B
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Exhibit B
East Wenatchee Municipal Code
Chapters 12.50 – 12.60
Comprehensive Street Standards
TABLE OF CONTENTS
Page
SUPPLEMENTARY DEFINITIONS ............................................................................................................. 3
PART 1 – GENERAL INFORMATION ........................................................................................................ 7
12.50.010 Purpose ............................................................................................................... 7
12.50.020 Scope and Applicability ........................................................................................ 7
12.50.030 Amendments ........................................................................................................ 7
12.50.040 Definitions and Terms .......................................................................................... 7
12.50.050 Exemptions .......................................................................................................... 7
12.50.060 Interpretation, Enforcement and Appeals ............................................................ 9
12.50.070 Relationship to Other City Standards and Requirements .................................... 9
12.50.080 Reference Design Specifications ......................................................................... 9
12.50.090 Project Acceptance .............................................................................................. 10
12.50.100 Alternatives .......................................................................................................... 11
12.50.110 Performance Assurance ..................................................................................... 12
12.50.120 Violations and Penalties ...................................................................................... 13
12.50.130 Severability .......................................................................................................... 13
12.50.140 Fees .................................................................................................................... 13
12.50.150 Transportation System and Frontage Improvements ......................................... 13
12.50.160 Withdrawal of Approval/Acceptance ................................................................... 16
12.50.170 Site Maintenance ................................................................................................ 16
12.50.180 Correspondence ................................................................................................. 16
PART 2 – CITY STREET CLASSIFICATION ............................................................................................ 16
12.51.010 Classification of Streets ...................................................................................... 16
12.51.020 Classification Definitions ..................................................................................... 16
PART 3 – DESIGN CRITERIA FOR STREETS ........................................................................................ 19
12.52.010 Scope .................................................................................................................. 19
12.52.020 General Requirements ........................................................................................ 19
12.52.030 General Design Principles for New Streets ........................................................ 20
12.52.040 Design Requirements – New and Reconstructed Streets .................................. 27
12.52.050 Storm Water Management .................................................................................. 32
12.52.060 New Utilities ........................................................................................................ 33
12.52.070 Connections to Existing Utilities .......................................................................... 35
PART 4 – DRIVEWAYS, ACCESS EASEMENTS, PEDESTRIAN FACILITIES,
WALKS AND TRAILS ..................................................................................................... 35
12.53.010 Driveways and Access Easements ..................................................................... 35
12.53.020 Pedestrian Facilities (Urban Areas) .................................................................... 39
12.53.030 Walkways, Bikeways and Trails .......................................................................... 39
12.53.040 School Access ..................................................................................................... 39
12.53.050 Alleys ................................................................................................................... 39
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PART 5 – BRIDGES AND DRAINAGE STRUCTURES ........................................................................... 39
12.54.010 Design Standards ............................................................................................... 39
12.54.020 Inspections .......................................................................................................... 41
12.54.030 As-Built Plans ...................................................................................................... 41
12.54.040 Existing Bridges and Drainage Structures .......................................................... 41
PART 6 – CONSTRUCTION PLANS ........................................................................................................ 42
12.55.010 General Requirements ........................................................................................ 42
12.55.020 Certification ......................................................................................................... 42
12.55.030 When Plans Are Not Required ............................................................................ 43
12.55.040 Submittal Procedure ........................................................................................... 43
12.55.050 Plan Elements ..................................................................................................... 44
12.55.060 General Standards for Subdivision Final Construction Plans ............................. 50
PART 7 – CONSTRUCTION CONTROL AND INSPECTION .................................................................. 51
12.56.010 Basis for Control of the Work .............................................................................. 51
12.56.020 Hours of Work ..................................................................................................... 51
12.56.030 Subdivision, Commercial and Right-of-Way Development Inspection ............... 52
12.56.040 Certification of Inspections and Testing .............................................................. 52
12.56.050 Inspection and Notification Requirements .......................................................... 52
12.56.060 Materials Sampling and Testing .......................................................................... 53
12.56.070 Traffic Control ...................................................................................................... 53
12.56.080 City Forces and City Contract Street Inspection ................................................. 55
12.56.090 Utilities ................................................................................................................. 55
12.56.100 Posting of Site ..................................................................................................... 55
12.56.110 Final Acceptance ................................................................................................ 55
PART 8 – ROADSIDE FEATURES ........................................................................................................... 55
12.57.010 Retaining Walls ................................................................................................... 55
12.57.020 Side Slopes ......................................................................................................... 56
12.57.030 Mail Boxes ........................................................................................................... 56
12.57.040 Survey Monuments ............................................................................................. 57
12.57.050 Barricades ........................................................................................................... 57
12.57.060 Bollards ............................................................................................................... 58
12.57.070 Guard Rail ........................................................................................................... 58
12.57.080 Roadside Obstacles ............................................................................................ 59
12.57.090 Medians ............................................................................................................... 59
12.57.100 Street Illumination ............................................................................................... 59
12.57.110 Landscaping ........................................................................................................ 60
12.57.120 Street Permanent Signing and Pavement Markings ........................................... 60
PART 9 –UNOPENED CITY RIGHT-OF-WAY .......................................................................................... 61
12.58.010 General ............................................................................................................... 61
12.58.020 Permits Required ................................................................................................ 61
PART 9 –TRAFFIC IMPACT ANALYSIS .................................................................................................. 62
12.59.010 Purpose ............................................................................................................... 62
12.59.020 Applicability ......................................................................................................... 62
12.59.030 Organization and content .................................................................................... 63
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PART 11 –FIGURES ................................................................................................................................. 65
12.60.010 List of Figures ...................................................................................................... 65
Figure 3-7a Urban Local Access Street Section, AADT Under 200 66
Figure 3-7b Urban Local Access Street Section, AADT 200 and Over 67
Figure 3-8 Urban Collector & Arterial Street Section 68
Figure 3-9 Cul-de-Sac Details 69
Figure 3-10 Underground Utility Locations – Curbed Street 70
Figure 3-11 Underground Utility Locations – Shouldered Street 71
Figure 3-12 Pavement Repair Section 72
Figure 4-1 Driveways and Access Easements 73
Figure 4-2 Access Easement Turnarounds 74
Figure 4-3 Access Easement 75
Figure 8-1 Survey Monument in Street 76
Figure 8-2 Survey Monument 2 77
Figure 8-3 Survey Monument 3 78
Figure DCPUD A-01 Light Standard Detail 79
Figure DCPUD A-02 Lighting System Service Entrance Disconnect 80
East Wenatchee Street Standards – Supplementary Definitions
Supplementary Definitions and modifications to be added to definitions in the East
Wenatchee Municipal Code:
AASHTO – The American Association of State Highway and Transportation
Officials
Access point – That location on a public street where a driveway or private
street connects.
ACP – Asphalt Concrete Pavement as per WSDOT Standard Specifications.
ADA – Americans with Disabilities Act of 1990, as amended.
BST – Bituminous Surface Treatment
CF – Cubic feet
Channelization – The separation or regulation of conflicting traffic movements
into definite paths of travel by the use of pavement markings, raised islands or
other suitable means to facilitate the safe and orderly movements of both
vehicles and pedestrians.
Clear Zone – The total roadside border area, starting at the edge of the traveled
way, available for safe use by errant vehicles. The area may consist of a
shoulder, a recoverable slope, a non-recoverable slope, and/or a clear run-out
area. The desired width is dependent upon the traffic volumes, speeds, and
roadside geometry.
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Consultant – A person, partnership or corporation duly registered to practice
professional engineering according to Washington State statutes, who is hired by
the landowner or developer and is empowered to act as his agent.
Control Zone - That roadside area defined by the “Control Zone Distance
Table”, found in Appendix 5 of the WSDOT Utilities Manual, within the street
right-of-way in which placement of above-ground utility objects is controlled.
City Street – A right-of-way over which the public has a legal right of passage,
and over which an automobile can be driven, and is not designated as a state
highway, and is outside the boundaries of a city or town. Furthermore, the City
shall have responsibility and authority over only such City streets that have been
incorporated into the City street system via statutory authority, i.e., RCW
36.75.070, RCW 36.75.080, RCW 36.75.090, RCW 36.81, RCW 36.88, RCW
58.17 and RCW 36.89
CSTC – Crushed Surfacing Top Course as per WSDOT Standard Specifications.
CY – Cubic Yard
Design Speed – A speed determined for design and correlation of the physical
features of a highway that influence vehicle operation: the maximum safe speed
maintainable over a specified section of street when conditions permit design
features to govern.
DHV – Design Hour Volume. Hourly traffic volume used for street design and
capacity analysis, usually one or more peak hours during a 24 hour period. The
DHV is typically the 30th highest hourly volume of the future year chosen for
design.
Driveway– A private access way connected to a public street serving a single
residential or commercial unit.
Driveway, Joint Usage – A private access way connecting to a public street
serving two adjacent residential or commercial units at a single point.
Edge of Traveled Way – The face of curb for streets that are, or will be
constructed to urban standards and the edge of pavement (not including
shoulders) for streets that are, or will be constructed in areas without sidewalks.
Emergency Vehicle Access– An improved easement providing access to
structures for fire apparatus and other emergency vehicles as provided for in
Section 503.1 of the International Fire Code as adopted by East Wenatchee and
meeting the requirements of a fire apparatus access street as per EWMC
15.16.010.
Encroachment – Occupancy of City right-of-way by non-street structures or
other objects of any kind.
Geologist – A practicing geologist licensed as a professional geologist pursuant
to Chapter 18.22 RCW.
Geometrics – The arrangement of the visible elements of a street such as
alignment, grade, sight distance, widths and slopes.
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HMA – Hot Mix Asphalt as per WSDOT Standard Specifications.
Level of service – A measure of traffic congestion along a street or at an
intersection. Within East Wenatchee this is done with a two-part process – a
‘condition’ LOS and an ‘operational’ LOS. See “East Wenatchee Transportation
Element” for details.
MPH – Mile Per Hour
MUTCD – The Manual on Uniform Traffic Control Devices
Operating Speed – Used for determination of sight distance. Operating speed
should be equal to the P85 speed for existing facilities and be equal to the design
speed for new facilities.
Passing Sight Distance – The minimum sight distance required for the driver of
one vehicle to pass another safely and comfortably.
Pavement Width – The distance measured from face of curb to face of curb for
curbed sections of street or the distance measured from outside edge of shoulder
to outside edge of shoulder for shouldered sections of street.
PC – Point of Curvature
PCC – Portland Cement Concrete as per WSDOT Standard Specifications, or
Point of Compound Curvature on alignment plans.
P85 Speed or 85th Percentile Speed – Based on speed studies, P85 speed is
that maximum speed at which 85% of the drivers will choose to drive and feel
comfortable based on the prevailing weather and traffic conditions for a particular
section of street.
PI – Point of Intersection
Primitive Street – An opened, City-maintained right-of-way that meets the
requirements of RCW 36.86.070. A primitive street has gravel or earth driving
surface and has an average daily traffic of 100 or fewer vehicles. A primitive
street must be established by the City legislative authority.
Private Street – A street, though approved by the City, is not a City street.
PT – Point of Tangency
Street, City – See “City Street”
Roadside Hazard – A side slope, an object, water, or a drainage device adjacent
to a street or street which, if impacted, would apply unacceptable impact forces
on the vehicle occupants or place the occupants in a hazardous position. It may
be either natural or man made.
Segmental Retaining Walls (Modular retaining walls) - Gravity retaining walls
that rely primarily on their mass (weight) for stability. The system consists of
concrete masonry units which are placed without the use of mortar (dry stacked),
and which rely on a combination of mechanical interlock and mass to prevent
overturning and sliding. The units may also be used in combination with
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horizontal layers of soil reinforcement which extend into the backfill to increase
the effective width and weight of the gravity mass.
Shoulder – That portion of the street contiguous with the traveled way for
accommodating stopped vehicles, for emergency use, and for lateral support of
base and surface courses.
Superelevation – A curve that has a banked slope.
Tangent – A straight line that touches a curve.
Traveled Way – That portion of the street intended for the movement of vehicles,
exclusive of shoulders.
Trip – A one-directional movement that begins at the origin and ends at the
destination. For example, a trip movement from a residence to a work place is a
trip from home to work.
Trip Distribution – The process by which the movement of trips between zones
is estimated. The data for each distribution may be measured or estimated by a
growth factor process or by a synthetic model.
Unopened Right-of-Way – A City right-of-way that exists by dedication or deed,
but for which no vehicular street has been constructed by the City or other
parties.
WSDOT – Washington State Department of Transportation.
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Part 1 – General Information
12.50.010 Purpose
A. These minimum standards for development provide requirements for street and
bridge design, construction and reconstruction. In establishing the minimum standards
for development, the City Engineer has sought to encourage standardization and
Internationality of street design elements. Considerations include safety, convenience,
aesthetics, proper drainage, and maintenance.
B. The City’s permitting; certification or licensing activities require the adoption of
Standards to guide individuals and entities in the administrative process of procuring the
necessary City approvals. The City must also have flexibility to carry out its general
duty to provide streets, streets and highways for the diverse and changing needs of the
traveling public. Accordingly, these Standards are not intended to represent the legal
standard by which the City’s duty to the traveling public is to be measured.
C. The decision to use a particular street design element at a particular location should
be made on the basis of an engineering analysis of the location. Thus, while this
document provides minimum requirements for design, it is not a substitute for
professional engineering judgment. It is the intent that the provisions of these
Standards be International requirements for street and bridge design, but may not be
appropriate for all locations and existing situations.
D. These Standards cannot provide for all situations. It is intended to assist, but not
substitute for, competent work by design professionals. It is expected that each
professional bring to each project the best of their skills and abilities. These Standards
are also not intended to unreasonably limit any innovative or creative effort which could
result in the more effective and appropriate combination of design, cost savings, or
both. Any proposed departure from these Standards will be judged on the likelihood
that such a departure or variance will produce a compensating or comparable result,
adequate in every way, for the street user and City resident.
12.50.020 Scope and Applicability
A. Except as exempted in EWMC 12.50.050, all requirements contained in these
Standards, together with any and all amendments thereto, shall apply to all street,
bridge, and other new construction and reconstruction of City and private streets in the
City of East Wenatchee or as may be required as a condition of development approval
processed in accordance with Chapters 15, 16, and 17 EWMC within East Wenatchee,
and as far as practicable and feasible to the reconstruction of existing City and private
streets in East Wenatchee. These Standards shall also apply to all public and private
accesses, and driveways connecting to public streets; usage of unopened City rights-of-
way; location and installation of new utilities; and pedestrian, bicycle and equestrian
facilities. In cases of any ambiguity or dispute over interpretation or application of the
provisions of these Standards, the decision of the City Engineer shall be final subjective
to administrative appeal as set forth in Chapter 19.06 EWMC
B. These Standards apply to modifications of street features of existing facilities
which are within the scope of reconstruction or capital improvement projects when so
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required by the City or to the extent they are expressly referred to in project plans and
specifications.
C. These Standards are applied as follows:
1. Mandatory standards are those considered most essential to the
achievement of overall design objectives. Mandatory standards use the word
“shall”.
2. Advisory standards allow some flexibility in application to accommodate
design constraints or to be compatible with local conditions. Advisory
standards use the word “should”.
3. All standards other than the mandatory and advisory, indicated with the
word “may”, are permissive with no requirement intended.
D. If these Standards are silent regarding a specific issue regarding the
planning, design or construction of a street or bridge then the AASHTO Geometric
Design of Highways and Streets, WSDOT Standard Plans and Specifications, WSDOT
Construction Manual, and the WSDOT City and City Design Standards as contained
within the WSDOT Local Agency Guidelines shall provide guidance as to the
requirements subject to approval by the City Engineer.
E. For the purpose of these Standards, the defined “Administrator” shall be the
City Engineer.
12.50.030 Amendments
A. These Standards may be amended from time to time in accordance with Chapter
19.08 EWMC, as amended.
B. All requests for amendments or revisions to these Standards from other City
departments, other agencies or other outside parties shall be provided to the City
Engineer for evaluation. Such requests shall be in writing and shall provide such
supporting information as may be required by the City Engineer.
12.50.040 Definitions and Terms
Unless otherwise defined or redefined within these Standards, all definitions and terms
used in these standards are contained in Chapters 15, 16, 17, 18, and 19 EWMC.
12.50.050 Exemptions
These Standards shall not govern the following:
A. Street and associated work done on streets which are under the authority,
ownership or responsibility of other governmental agencies. In such cases, the
standards of the other governmental agency shall apply.
B. Street maintenance work within City street rights-of-way performed by City forces
or by contract.
C. Street maintenance work on private streets that does not affect the prior
approved geometrics or adversely affect the safe passage of vehicles on the private
street.
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D. Temporary street repairs made on an emergency basis.
E. Resurfacing and restoration (“2-R”) projects.
F. New street construction or reconstruction within the City in accordance with an
interlocal agreement stipulating different streets standards for a specific project.
12.50.060 Interpretation, Enforcement and Appeals
A. Interpretation and enforcement of these Standards shall be the responsibility of
the City Engineer or designated representative.
B. Failure to comply with these Standards will be cause for withholding or
withdrawing acceptance of plans or drawings, withholding of bond, final inspection
approval or occupancy certificates and/or other penalties as provided for in Chapters
15, 16, 17, 18, and 19 EWMC. For the purposes of this chapter, the “director” shall
mean the City Engineer/Street Superintendent or designated representative.
C. All appeals of any decision by the City Engineer in his/her administration,
interpretation or enforcement of these Standards shall be in writing and within 14 days
of the decision. The written appeal, including the recommendations and analyses of the
City Engineer, shall be made to the East Wenatchee Hearing Examiner in accordance
with EWMC 2.42 and Title 19 EWMC.
12.50.070 Relationship to Other City Standards and Requirements
Other East Wenatchee plans, standards and requirements for which these Standards
are intended to be consistent with are:
A. East Wenatchee Municipal Code, as amended, particularly Titles 12, 13, 15, 17,
18, and 19.
B. Greater East Wenatchee Area Comprehensive Plan, current edition.
C. East Wenatchee Non-Motorized Transportation Plan, when adopted.
12.50.080 Reference Design Specifications
Except where these Standards provide otherwise, design detail, construction materials
and workmanship shall be in accordance with the following publications:
A. WSDOT Standard Specifications for Road, Bridge and Municipal Construction,
current edition, henceforth referenced as the “WSDOT Standard Specifications” along
with the WSDOT Design Manual, current edition
B. WSDOT Standard Plans for Road and Bridge Construction, current edition,
henceforth referenced as the “WSDOT Standard Plans”
C. WSDOT Local Agency Guidelines, current edition, including the City and County
Design Standards for the Construction of Urban and Rural Arterials and Collectors
D. AASHTO “A Policy on Geometric Design of Highways and Streets”, current
edition, also known as the “Green Book
E. AASHTO “Guidelines for Geometric Design of Very Low-Volume Local Roads
(ADT<= 400), current edition
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F. USDOT “Manual on Uniform Traffic Control Devices”, current edition as adopted,
including amendments, by the Washington State Department of Transportation,
henceforth referenced as the “MUTCD”
G. ITE Trip Generation Manual, current edition
H. HEC22, Urban Drainage Design Manual
I. ADA guidelines for Public Right of Ways
J. USDA Natural Resources Conservation Service Technical Release 55, “Urban
Hydrology for Small Watersheds”
K. Washington State Department of Ecology, “Stormwater Management Manual for
Eastern Washington, DOE Publication # 04-10-076, current edition
L. WSDOT Construction Manual, current edition
M. WSDOT Bridge Design Manual, current edition
N. WSDOT Hydraulics Manual, current edition
O. WSDOT Materials Manual, current edition
P. WSDOT Roadside Manual, current edition
Q. WSDOT Utilities Manual, current edition
R. WSDOT Work Zone Traffic Control Manual, current edition
S. WSDOT Highway Runoff Manual, current edition
T. WSDOT Pedestrian Facilities Guidebook, current edition
U. Department of Ecology, Criteria For Sewage Work Design, Pub # 98-37 WQ,
current edition
12.50.090 Project Acceptance
A. The City Engineer shall rely upon the certification and approval of the street and
drainage plans and calculations by the applicant’s engineer for approval of the project.
The City Engineer’s acceptance of the plans shall not relieve the applicant or the
applicant’s Engineer from any liability related to portions of the design that are not in
conformance with these Standards nor do not follow good engineering practice.
B. Upon receipt of the project plans and calculations, the City Engineer will review
the work of the applicant’s Engineer for accuracy and completeness. The plans and
calculations will either be accepted by the City or returned for revisions. All revisions are
subject to hourly review fees as set forth in the current fee schedule. Project acceptance
occurs when the City Engineer signs the plans and review fees are paid.
C. The acceptance of plans shall be valid for a period of three years from the date of
approval by the City Engineer. Construction in accordance with the approved plans
must be completed within this period. If not completed within this period, the plans shall
be resubmitted to the City Engineer for review and any revisions or modifications
necessary to meet the Standards in effect at the time of re-submittal shall be made. Re-
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submittal fees equal to new application fees shall be paid before the plans can be
reviewed and approved by the City.
D. A Traffic Impact Analysis shall only be valid for a period of five years from the
date of approval of the development. If the project is not completed within this time
period, the Traffic Impact Analysis shall be updated and resubmitted to the City
Engineer for review and concurrence prior to project acceptance. Re-submittal fees
equal to new application fees shall be paid before the updated analysis is reviewed and
approved by the City.
E. Requests for modifications made during the construction of a project that are not
in conflict with the preliminary plat approval conditions shall be approved by the City
Engineer and City Fire Marshal, when applicable, prior to any changes being made in
the field.
F. Depending upon the nature of the modifications and in all cases where there is a
conflict with the preliminary plat approval conditions, approval of the Hearing Body for
the specific type of permit will also be required as provided for in Title 19 of the East
Wenatchee Municipal Code.
12.50.100 Alternatives
A. These Standards represent reasonable approaches based on past experience in
East Wenatchee and other jurisdictions. These Standards indicate the appropriate
practice under most conditions.
B. Engineering design is an endeavor that examines alternative solutions to real
world situations and accordingly, these Standards are not provided to hamper the
introduction of new ideas. It is fully expected that creative engineering will continue to
take place. Situations will present themselves where alternatives may be preferred to
allow conformance with existing conditions, to overcome adverse topography or to allow
for more affordable solutions without adversely affecting safety, maintainability or
aesthetics. These Standards are intended to provide predictability yet still allow for the
flexibility necessary for innovation.
C. Alternatives to these Standards shall be proposed at the pre-application meeting
and evaluated and accepted prior to the application submittal.
D. The alternative request shall be in writing, submitted to the City Engineer, and
address the following points:
1. Specifically outline the reason for the alternative request.
2. Specify the chapter and section for which the alternative is requested.
3. Provide supporting evidence demonstrating that an alternative from these
Standards is based on sound engineering judgment that the requirements for safety,
function, appearance, fire protection and maintainability are fully met and complies with
the East Wenatchee Comprehensive Plan and appropriate sub-area plan if applicable.
4. The above information shall be used by the City Engineer in evaluating
requests for the use of alternatives to these Standards. Alternative requests that
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conflict with the International Fire Code as adopted by East Wenatchee shall also
require written concurrence from the Douglas County Fire District #2 Fire Marshal.
5. Specify how the alternative proposal is equivalent to what would be
achieved if the Standards were followed.
12.50.110 Performance Assurance
A. Construction Performance
1. In lieu of the completion of any required improvements prior to approval of
a final plat, short plat, or other land-use action the City Engineer may accept a
performance guarantee in an amount and with satisfactory surety and conditions
providing for and securing to East Wenatchee the actual design, construction and
installation of such improvements within a period specified by the City Engineer. The
City Engineer will enforce the guarantee through appropriate legal and equitable
remedies. If a surety bond is provided, the amount of the bond shall not be less than
125%of the estimated design and construction cost as reviewed and concurred in by the
City Engineer. See EWMC 16.24.180 – 16.24.210 for specific instructions.
2. The amount of the performance guarantee may be reduced during
construction, as determined by the City Engineer and based upon the amount of
progress payments. At no time will the performance guarantee amount be reduced to
less than 30% of the original amount or $5,000.00, whichever is greater.
3. Once a performance assurance is approved by the City, building permits
or any additional permits required by the City may be issued prior to completion and
approval of all street, drainage and utility construction. Building permits will only be
issued if the streets are determined to be usable unless otherwise exempted by the Fire
Marshal.
4. Prior to beginning construction activities within existing right-of-way, a
permit to perform work in the right of way shall be secured. Restoration sureties may be
required by the City Engineer in the manner provided for in EWMC 12.50.110 of these
Standards.
B. Maintenance Performance
1. The developer shall warrant all portions of construction work done in the
right-of-way for a period of 18 months after completion or acceptance, whichever is
later, against defective workmanship and materials. The developer shall keep the
streets and public improvements in good order and repair during the 18-month period.
2. This warranty shall be secured with a form of collateral acceptable to the
City Engineer in conformance with the requirements of EWMC 16.080 – 16.210. The
amount of this collateral shall be 15 percent of the original estimated or final design and
construction cost as reviewed and concurred in by the City Engineer or $5,000.00,
which ever is greater.
3. This warranty collateral shall be submitted concurrently with a request for
release of the construction performance guarantee and the 18-month warranty period
shall commence on the date of said release of the guarantee. The warranty collateral
shall not be drawn upon. This warranty collateral will be held 18 months by East
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Wenatchee and will cover all improvements associated with the street system and its
related drainage facilities.
4. During the course of the warranty period, periodic inspections will be
conducted by the City Engineer or his/her representative. If deficiencies are observed,
other than normal deterioration, they shall be brought to the attention of the developer
for his/her action. At the end of the 18 month period, the City Engineer shall conduct a
final inspection of the improvements and determine all work and an estimate of the cost
necessary to restore the street, drainage facilities and any other improvements to their
original design condition and provide said information to the developer. The developer
shall have the option to perform all necessary restoration within a reasonable time as
may be negotiated with the City Engineer. Should any or all of the restoration not be
satisfactorily accomplished by the developer, the City Engineer will arrange for the
accomplishment of the repairs. This restoration amount shall be deducted from the
warranty collateral and the balance returned to the developer with an itemized list of all
deductions; if the cost of the restoration work done by the City exceeds the amount of
the warranty collateral, the developer shall be billed by the City for the balance including
an itemized statement of all work performed.
5. Maintenance guarantees will not be required when the required
construction performance guarantee is $1,000.00 or less.
12.50.120 Violations and Penalties
A. Failure to comply with these Standards shall be cause for withholding or
withdrawing approval of plans, forfeiture of financial security or non-acceptance of the
work by the City.
B. Violation of any provisions of these Standards by any person, firm or corporation
shall be pursued and resolved in the same manner as any violation of East Wenatchee
Municipal Code as provided for in Chapters 16.32 or 17.104 EWMC.
C. Notwithstanding the existence or use of any other remedy, the Director or City
Engineer may seek legal or equitable relief to enjoin any acts or practices and abate
any conditions that constitute or will constitute a violation of these Standards or other
regulations herein adopted.
12.50.130 Severability
If any part of these Standards or its application to any person is, for any reason,
declared invalid, illegal, or unconstitutional, in whole or in part by any court or agency of
competent jurisdiction, said decision shall not affect the validity of the remaining
portions thereof.
12.50.140 Fees
Fees shall be assessed in accordance with the current development fee schedule as
approved by the East Wenatchee City Council.
12.50.150 Transportation System and Frontage Improvements
Frontage improvements are required for all improvement and development projects that
have frontage on a public street, including state highways, that does not meet current
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standards. The transportation system and frontage improvements shall be in place, or
be secured with a bond or by an approved deferred improvement agreement prior to
final approval of the project or certificate of occupancy, whichever occurs first, for that
development or phase.
A. Transportation Improvements – Off Site
Off-site transportation improvements such as street widening, additional right-of-way,
paving, geometric improvements, additional lanes, traffic control devices, bridge and
drainage structure modifications, pedestrian facilities, bike paths and intersection
improvements away from the development shall be required where identified by a traffic
impact analysis or otherwise be determined to be necessary as part of the development
review process.
The East Wenatchee Community Development will also review the right-of-way
status of abutting and adjoining City streets to determine if additional right-of-way
is needed to meet the current street standards as set forth in these Standards.
All such required off-site improvements must be completed or other financing
arrangements made as approved by the City prior to final development approval.
Alternate financing methods such as use of Street Benefit Assessment
Reimbursement Areas as set forth in EWMC 12.20 may be used.
B. Frontage Improvements – General Requirements
1. Frontage improvements may be required for all improvement and
development projects that have frontage on a public street, including state highways.
Frontage improvements shall consist of, but not limited to, dedication of right-of-way,
street widening, turn lanes, traffic signals, bus stop pads, bus shelter pads, passenger
shelters, bus pullouts, pedestrian facilities, bike paths where designated in the current
City Comprehensive Plan and safety and drainage improvements, including all tributary
runoff.
2. Frontage improvements, including the dedication of right-of-way, shall be
installed at the time of development unless otherwise approved by the City.
3. The developer shall coordinate the design and construction with the City,
Washington State Department of Transportation, when appropriate, and Link Transit
when frontage improvements include bus stop pads, shelter pads and bus shelters.
Prescription of a passenger shelter shall also incorporate the condition that the shelter
meets Link Transit’s standard passenger shelter specifications.
C. Exceptions
The City Engineer may approve an alternative as set out in EWMC 12.50.150(D). to the
installation of frontage improvements, not including dedication of right-of-way, if one or
more of the following conditions apply:
1. The design grade and alignment of the abutting streets cannot be
determined at the time of construction of the development.
2. The installation of frontage improvements required for the development
would create or intensify a hazard to public safety.
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3. The installation of frontage improvements required for the development
could be more safely, efficiently, and effectively implemented if done concurrently with
the installation of improvements required for other developments along the same street
frontage.
D. Deferral of Improvements (Refer to EWMC 15.48)
Any deferred frontage improvement shall be secured for installation at a later date by an
agreement and covenant between the City and the property owner whereby the
property owner agrees to three methods of installation of the deferred frontage
improvements. This agreement and covenant shall be executed before the issuance of
any improvement and development permits. The City Engineer shall select which
method to enforce against the property owner at the time when the deferred frontage
improvements are required to be installed. Three methods the property owner shall
agree to are:
1. Commitment to Participate in an Improvement District
The property owner shall execute and record an agreement with the City and covenant
running with the land that ensures the participation of the subject property owner in any
local improvement district (RCW 35.43), street improvement district (RCW 36.88), or
transportation benefit district (RCW 36.73) formed for the construction of such frontage
improvements. Said document shall be in a form acceptable to the City Prosecuting
Attorney’s Office and shall be effective for a period not exceeding ten (10) years from
the date of recording. This document shall bind the owner and its designees, heirs,
transferees, donees, and/or successors in interest.
2. Agreement to Participate in Improvement Project
The property owner shall execute and record an agreement with the City and covenant
running with the land that ensures the participation of the subject property owner in an
improvement project not supported by an improvement district that encompasses the
said deferred frontage improvements by paying their share thereof. Such share shall be
equal to the City’s costs for installing the deferred frontage improvements. The City shall
provide a non-binding total cost estimate to the property owner at the time the
agreement is entered into including a disclaimer that the total cost of the project at the
time of construction may vary due to inflation, changes in design standards or other
governmental laws and regulations. A contract shall be developed at the time the
improvement project is developed outlining the level of participation by the subject
property owner in said project and the manner in which payment is to be made;
provided that the financial responsibility of the subject property owner shall not exceed
the cost of said deferred frontage improvements at the time of the improvement project.
Such an agreement and covenant shall bind the owner and its assignees, heirs,
transferees, donees, and/or successors in interest. The agreement and covenant
document shall be effective for a period of ten (10) years from the date of recording.
3. Voluntary Payments
See RCW 82.02.020 and the provisions of RCW 43.21C the State Environmental Policy
Act.
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12.50.160 Withdrawal of Approval/Acceptance
At the discretion of the City Engineer, errors and omissions in the approved/accepted
plans or information used as a basis for such approvals/acceptances may constitute
grounds for withdrawal of any approvals/acceptances and/or stoppage of any or all
permitted work. It shall be the responsibility of the applicant to show cause why such
work should continue, and make such changes in plans that may be required by the City
before the plans are re-approved.
12.50.170 Site Maintenance
A. The applicant shall schedule and control the work to comply with all applicable
provisions of City development regulations and applicable state and federal laws and
regulations to prevent any hazards to public safety, health and welfare.
B. On existing streets, two way traffic and all existing lanes of traffic shall be
maintained at all times unless detour and/or traffic control plans have been approved in
advance by the City Engineer.
C. Streets shall be kept free of dirt and debris.
D. Pedestrian and bicycle facilities shall be kept free of obstructions.
E. Pedestrian and vehicular access to occupied buildings shall be maintained
except where written approval from the building owner has been obtained.
F. Drainage facilities shall be maintained and fully functional and stormwater,
erosion, and sedimentation control devices shall be maintained and fully functional.
G. On-site grading shall be done in a manner to minimize off-site erosion and
siltation in conformance with all statutory requirements, permits and approved plans.
12.50.180 Correspondence
All correspondence, including letters, reports, and plans, shall be clearly labeled with
the City project number as assigned by the Department. Submittals or correspondence
without this identification number will not be accepted and will not be reviewed.
Part 2 – City Street Classification
12.51.010 Classification of Streets
The applicable Standards shall be determined by the location, function (City or private),
functional classification (arterial, collector or access) and projected traffic volumes and
land use patterns. Terrain (flat, rolling, mountainous) will also enter into Standards
related to design speed and maximum grade.
12.51.020 Classification Definitions
A. Location
A primary determination of the applicable portions of these Standards that must be used
is based on the location of the proposed street or street construction or improvement.
In most cases, the following will govern what city street standards will apply.
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1. Urban
An urban location is defined as that area within a federally designated urban or
urbanized area or a designated Urban Growth Area as established by Douglas County
under the Growth Management Act. Appropriate maps showing the boundaries are
available from the City of East Wenatchee.
B. Function
1. City Streets
City streets are those that are continuously open to general public travel and have been
accepted by the City into the City street system. Streets that are dedicated to the public
shall become City streets upon completion of the construction to City Standards,
acceptance of the completed construction by the City Engineer, and approval of the final
plat or other instrument as appropriate by the City. All others must be put on the City
street system by means of the street establishment process as specified in RCW 36.81
and be constructed to City Standards for public streets.
2. Private Streets
Private streets are all streets not designated as public streets and not open to general
public travel.
C. Functional Classification - General
1. Urban Classification
All City streets in urban areas are classified as Urban Local Access, Urban Collector,
Urban Minor Arterial or Urban Principal Arterial. New streets and any modifications to
existing connector or frontage streets that may be required as a condition of
development approval shall meet the minimum design requirements for urban streets as
specified in these Standards. Appropriate maps showing the functional classifications
are available from the City of East Wenatchee.
D. Functional Classification – Descriptions
1. Principal Arterial – Principal arterials permit traffic flow through and
between cities and towns and between major elements of the urban areas. They are of
great importance in the regional transportation system as they interconnect major traffic
generators, such as central business districts and regional shopping centers, to other
major activity centers and carry a high proportion of the total area travel on a minimum
of street mileage. Principal arterials frequently carry important intra-urban as well as
inter-city bus routes.
Many principal arterials are fully or partially access controlled facilities emphasizing the
through movement of traffic. Within the category are (1) interstates (2) other freeways
and expressways and (3) other principal arterials. Spacing of principal arterials may
vary from less than one mile in highly developed central business areas to five miles or
more in sparsely developed urban fringes. Principal arterials generally comprise 5-10
percent of the urban system.
2. Minor Arterial – Minor arterials collect and distribute traffic from principal
arterials to lesser-classified streets, or allow for traffic to directly access their
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destination. In urban areas, they serve secondary traffic generators such as community
business centers, neighborhood shopping centers, multiple residence areas, and traffic
from neighborhood to neighborhood within a community. Urban bus routes generally
follow these facilities. Access to land use activities is generally prohibited. Such
facilities are usually spaced under two miles apart in urban fringes and in core areas
can be spaced 1/8 to 1/2 mile apart.
3. Collectors – Urban collectors provide for land access and traffic circulation
within residential neighborhoods and commercial and industrial areas. They distribute
traffic movements from such areas to the arterial system. Half-mile spacing is common
in more developed areas. Collectors do not handle long through trips and are not
continuous for any great length. They generally account for 5-10 percent of the total
street system.
4. Local Access Streets– All public streets, not otherwise classified as an
arterial or collector, comprise the local access system. These streets primarily serve
local needs for access to adjacent lands, travel over relatively short distances, and
connections to collectors or other higher systems. Local urban streets offer the lowest
level of mobility and usually contain no bus routes. Service to through traffic movement
is deliberately discouraged. Local streets usually account for 65-80 percent of the
urban system.
E. Terrain
Terrain is a basis for further classification of geometric requirements.
1. Flat terrain is that condition where street sight distances, as governed by
both horizontal and vertical restrictions, are generally long or could be made to be so
without construction difficulty or major expense. The slope of the existing terrain is from
0% to and including 5%.
2. Rolling terrain is that condition where the natural slopes rise above and fall
below the street grade line consistently. Normal street alignment is restricted by
occasional steep slopes. The slope of the existing terrain is from 5% to and including
15%.
3. Mountainous terrain is that condition where longitudinal and transverse
changes in the elevation of the ground with respect to a street are abrupt and where the
roadbed is obtained by frequent benching or side hill excavation. The slope of the
existing terrain exceeds 15%.
Terrain classification pertains to the general character of the specific route corridor.
Streets in valleys or passes of mountainous areas that have all the characteristics of
streets traversing flat or rolling terrain should be classified as flat or rolling. In rolling
terrain, trucks reduce their speeds below those of passenger cars on some sections of
street. Mountainous terrain is responsible for some truck operation at crawl speeds. In
cases where the terrain classification is in question, the City Engineer shall make the
final decision.
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Part 3 – Design Criteria for Streets
12.52.010 Scope
The purpose of this chapter is to present criteria for the design of streets. It is to be
used by developers and their engineers in the design of public, private streets for which
approval by the City Engineer is required.
12.52.020 General Requirements
A. Minimum Standards
The provisions stipulated in this section are required minimum standards and shall be
considered applicable to all parts of these specifications including any supplements and
revisions. All construction within the public right-of-way shall be designed by or under
the direct supervision of a registered professional engineer licensed to practice in the
State of Washington. All drawings and support data submitted to the City for approval
must bear his/her seal. The signature of the registered professional engineer will only
be required on the approved final plans.
The design criteria, as presented, are intended to aid in preparation of plans and
specifications and include minimum standards where applicable. These design criteria
are considered minimum and a complete design will usually require more than is
presented in this document. As with any design criteria, occasions may arise where the
minimum standards are either inappropriate or cannot be justified economically and an
equal but alternative solution may be proposed. A written request for each alternative
shall be directed to the City Engineer and shall conform to criteria in EWMC 12.50.100
“Alternatives”.
B. Application to Private Streets
Although community street requirements are usually best served by public streets
owned and maintained by the City, private streets may be appropriate for some local
access streets for either residential or commercial/industrial property. These standards
apply to private streets as part of the City’s responsibility to insure adequate access for
normal and emergency vehicle use to individual parcels throughout the City.
Private streets are permitted only when all of the following conditions are met:
1. Permanently established by tract or easement providing legal access to
each affected lot, dwelling unit, or business and sufficient to accommodate required
improvements, to include provision for future use by adjacent property owners when
applicable.
2. Constructed to East Wenatchee Street Standards as set forth herein.
3. Accessible at all times for emergency and public service vehicle use.
4. Not obstructing, or part of, the present or future public neighborhood
circulation or arterial plan developed in processes such as the Greater East Wenatchee
Area Comprehensive Plan, or Capital Improvement Plan.
5. Designed for an average daily traffic count (AADT) of 160 or less vehicles
per day utilizing current ITE guidelines. New private streets directly accessing a City
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street that will generate more than 160 AADT will be permitted only by approval of the
hearing examiner and will be required to meet the appropriate City Street Standards
contained herein (see Figures 3-7a through 3-8). There is no maximum AADT provision
if a new development is served by an extension of, or spur off, an existing private street,
however, should such existing private street be less than the Standards considering the
current and proposed AADT, the new development may be denied unless a lower level
of improvement has been approved by the City hearing examiner upon recommendation
by the City Engineer or the applicant assumes responsibility for bringing the existing
private street serving the new development up to these Standards.
6. Maintained in accordance with these standards by a capable and legally
responsible owner, homeowner’s association or other legal entity made up of all
benefited property owners. A written street maintenance agreement addressing the
rights and responsibilities of all benefited property owners shall be approved by the City
prior to final approval of the land development. Said street maintenance agreement
shall be recorded with the City and shall become a covenant with the effected
properties. The term “benefited property owners” shall include the owners of record of
all properties with frontage, including access rights, on the private street or otherwise
have legal access, whether constructed or not, to the private street.
7. Clearly described as a private street not maintained by the City on the
face of the plat, short plat or other development authorization.
8. Clearly signed at the street location as a private street.
12.52.030 General Design Principles for New Streets
A. Street Network Circulation
The importance of good street network circulation for the health, welfare and safety of
the public cannot be overemphasized. Poor circulation adds unnecessary miles to
pedestrian and trail systems, school bus routes, mail delivery and other service
deliveries, utility services and most importantly, emergency services such as police and
fire. Through good street network circulation, the public will have better emergency
access and police and fire safety will be enhanced.
1. Plans will be reviewed for the provision of the best possible street and
pedestrian network circulation and for conformance with any adopted comprehensive
plan. The street alignment may necessitate re-alignment in order to foster the long-
range transportation objectives of the City. This includes greater scrutiny to provide
continuity of pedestrian and other trail systems related to the proposed street network.
The inclusion of permanent cul-de-sacs is strongly discouraged as they inhibit street
and pedestrian network circulation (see EWMC 12.52.040(L) for specific requirements)
and are not consistent with the City Comprehensive Plan.
2. To facilitate the best possible street and pedestrian network circulation, if it
is determined by the City Engineer, after making an individualized determination, that
the layout of streets are to provide for the continuation of existing streets in adjoining
subdivisions, then the streets shall be constructed prior to final plat approval. When
adjoining property is not subdivided, the City Engineer shall determine whether streets
in the proposed plat are to provide access to such unplatted property. The location for
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access to unplatted property shall be placed such that the objectives in these Standards
can be achieved. Reserve easement strips may be required to prevent unauthorized
access until such time as the connecting streets are constructed.
3. If the streets are to remain private, the above still applies except a
separate tract or easement will be shown on the final plat map and they will not be
dedicated to the public. Specific information in the recorded covenants regarding the
use of this easement will be required.
4. Unless otherwise approved, all lots within major subdivisions shall be
accessed by means of an internal street network. This network may be public or private
but not a mixture of both. Access easements or multi-dwelling driveways in lieu of
public or private streets shall not be permitted.
B. On-Site Principles
An integral part of an overall traffic study relates to basic site planning principles. An
integrated on-site street system should deliver vehicles from the external street system
in a manner easily understood by typical drivers and that maximizes efficiency,
accommodates anticipated traffic patterns and ensures public safety.
1. Alignment
Connecting street centerlines deflecting from each other more than ten degrees shall be
connected by a curve the radius of which shall be approved by the City Engineer.
Street intersections shall be as nearly at right angles as is practicable, and street jogs
having offsets of less than 125 feet shall be avoided.
2. Internal Vehicular Circulation
Internal circulation is the means by which vehicular traffic is delivered between entry
points and parking areas, pick-up/drop-off points, and service areas, and should be
planned to accommodate appropriate future traffic volumes.
3. Subdivision Boundary Streets
A street lying along the boundary of a subdivision may be dedicated with less than the
width required by these standards if it is practicable to require the dedication of the
remaining portion of such width when the adjoining property is subdivided. In such case
there is required a reserve easement strip one foot wide along such street for the
purpose of withholding access to the un-subdivided property from such street until a
street is constructed to the full width required. The procedure shall also apply in the
case of any street that dead-ends at the boundary of a subdivision.
4. Access points
Streets and lots shall be laid out to provide individual lot access onto an internal street
system, hence via the internal street system to the existing public street system. Direct
access to a perimeter street shall normally be denied except for direct access onto a
designated local access street.
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5. Parking
Parking shall be provided to meet site-generated demands and be consistent with Title
17 of the East Wenatchee Municipal Code and other planning department policies.
6. Vehicular Queuing and Storage
a. Access drives should provide adequate vehicular exit queuing.
b. Parking areas and access points of small developments should be
designed so vehicles waiting to exit are aligned perpendicular to the off-site street
system.
c. Queuing areas of large developments should be sufficient so
vehicles queued at exits do not block internal circulation. Exits shall be signalized if
warranted by the MUTCD at build out.
d. Documentation shall be provided to verify queue lengths for
signalized intersections, on-site queuing reservoirs, and off-site left and right-turn lanes.
7. Building Service Drives
Building service drives are streets adjacent to a building and its entrances, and should
be designed with sufficient width to serve as one or all of the following:
a. Fire and/or emergency vehicle access
b. Pedestrian pick-up/drop-off points
Pedestrian crossings and pick-up/drop-off points should be signed and striped to
identify the vehicular/pedestrian conflict.
c. Internal circulation
d. Recirculation in parking areas
Recirculation aisles shall have sufficient turning radii, clearances, sight distances and
signing.
e. Transit passenger pick-up/drop off areas.
8. Pedestrian, Bus, Bicycle, and Disabled Access Facilities
The overall site plans must consider pedestrians, bus, bicycle, and disabled access
facilities.
a. Pedestrian Facilities
Pedestrian connections between public transportation facilities and site buildings shall
be integrated into the overall project design. Pedestrian facilities shall be designed to
reduce the motor vehicle use for trips within the development and between nearby
developments.
b. Transit Facilities
Appropriate public transportation facilities, such as passenger shelters, ride sharing
areas and bus staging areas shall be accommodated adjacent to service drive and
entrance areas; at key locations along circulation drives; and at major pedestrian focal
points along the external street system as determined the City and LINK Transit.
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c. Bicycle Facilities
Facilities for parking bicycles should be provided where bicycle use is expected. Refer
to EWMC 17.72.020.
d. Disabled Access Facilities
Access for disabled persons shall be provided in accordance with federal, state and City
requirements.
9. Service and Delivery Vehicles
Service and delivery vehicles require separate criteria for movement to and from the
site:
a. Vehicle turning paths shall be sufficient to accommodate the largest
vehicles anticipated, a minimum single unit truck (SU).
b. Service vehicle access points shall have turning paths sufficient to
allow service vehicles to enter and exit the site without encroaching upon opposing
lanes or curbed areas.
c. External and internal streets shall have sufficient separation for
large vehicles to be queued on entry or exit without blocking access to parking spaces
or internal streets.
C. Fitting the Street into the Environment
When land development requires the construction of new streets, there are
opportunities to ‘fit’ the street into the existing landscape and environment in ways that
are more pleasing to the eye than just simple straight lines.
The principles set forth in this section stress the importance of protection, conserving,
and enhancing the scenic qualities of a City street. They are also consistent with good
engineering and the necessity to provide a street which is safe to travel and economical
to construct and maintain. Unless conditioned by “shall”, these principles are not
regulatory but are advisory only to provide guidance to developers.
1. Relating Alignment to the Landscape
A unique visual quality of most City streets is the harmonious relationship their
alignments have with the landscape. Increased volumes of traffic, poor sight distance,
or other operational conditions may often necessitate modification of an existing
alignment. If such a change is necessary, the street geometry usually must become
more precise and directional. However, a new alignment should not be considered a
straight line connecting two points. Rather, it should seek the same qualities of existing
alignments by reinforcing and revealing the features of the landscape. The following
guidelines will be useful for relating new alignments with the landscape:
a. Choose an alignment that blends with the terrain and adjusts to
important scenic features.
b. In most instances, the appropriate alignment will be characterized
by curves that continually adjust to the rolling topography of natural landform. A
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curvilinear alignment is visually and functionally preferable to long tangents that cut
through hillsides, leaving steep unsightly and unstable embankments.
c. Where the land is level, or a strong lineal direction is created by
landscape elements, such as a long row of trees or the patterns of fields, the use of a
long tangent may be justified. When using a long tangent, try to direct it toward a natural
or man-made focal point.
d. When climbing a hillside, the street should bend to the crest,
traversing the contours, rather than climbing it straight on. However, care must be taken
to avoid hiding a curve or driveway just beyond the brow of a hill.
e. When crossing a ridge, pick a saddle or low area in the top to
locate the street.
f. Natural and man-made features provide variety and contrast which
maintain the traveler's interest. Whenever possible, alignments should be located to
bring the more interesting features into view.
g. Near the edges of surface water, woods, or a break in topography,
use alignments that echo or emphasize the shape of the edges. However, avoid moving
streets close to the waters edge as it destroys habitat.
h. When approaching important features, it is preferable to allow a
distant view of the object, curve the alignment away, and then bring it close for a
contrasting view.
A street which blends with the form and pattern of the landscape is also desirable from
the standpoint of construction and maintenance. Some of the advantages to be gained
are reduction of cut and fill quantities, more efficient utilization of natural drainage, and
better control of roadside erosion because natural vegetation is preserved.
2. Combining Horizontal and Vertical Alignment
The combination of horizontal and vertical alignments closely influences the appearance
and safety of a street. When alignments are properly coordinated, a street will be
visually pleasing and safer to travel. Alignment coordination primarily applies to major
streets, but the basic principles should also be recognized as important considerations
when altering minor streets. Set forth below is a partial list of suggestions to guide the
combination of horizontal and vertical alignments:
a. Consistency in the scale of horizontal and vertical elements should be
maintained whenever possible. Small dips and humps should be avoided in what is
actually a uniform grade, and “kinks” should be avoided in what is actually a long curve.
b. The beginning and ending of horizontal and vertical alignments should
not occur in the same location. The beginning of a horizontal curve should generally
occur before beginning a vertical curve and be somewhat longer in length. This provides
a gradual transition between the alignments and prevents one from accentuating the
other.
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c. The beginning of a horizontal curve should not coincide with the top of
a hill. This situation is visually deceptive and hazardous, as the quick change in
horizontal alignment cannot be seen by the driver.
d.Avoid dips in vertical alignment before beginning a horizontal curve. This
will prevent the street from appearing disjointed.
e. Avoid “broken back” curves (two horizontal curves in the same
direction with a short tangent in-between), compound curves or reverse curves except
for local access streets with a design speed of 25 MPH.
f. When an extremely long grade is necessary, it may be better to adjust
the vertical alignment so the grade is steeper near the bottom of the hill and gradually
lessens as it approaches the crest of the hill. Another alternative is to create an
alignment with intervals of lesser grades
g. Sight distance requirements vary with the anticipated speed of
vehicles. Adequate sight distance must be provided. This should be checked at all
horizontal curves and crest vertical curves.
3. Cross Section
The small scale of cross-section elements is an important characteristic adding to the
scenic quality of a City street. This aspect is most apparent in the width of the traveling
surface, its adjacent shoulders, and the close proximity of the roadside. Where traffic
volumes are low, speeds are slow, and meeting and passing of vehicles is infrequent, a
narrow cross section may be appropriate.
Modifications which require widening of the street will alter the existing scale of the City
street and consequently its visual impact on the motorist and adjacent properties. The
following considerations should guide the determination of an appropriate cross-section:
a. Appropriate widths should be determined by the function the street
serves as part of the City street system, operational requirements for safe vehicular
movement, and the characteristics of topography and other physical features (check
results of planning considerations). In most cases, the minimum cross section, based
on location, functional class and traffic volume is shown in Figures -3.7a through 3-8 in
EWMC 12.060.110.
b. Consider all elements of the cross-section (traveling surface,
shoulders, ditches, proper grading to stabilize cut and fill slopes, slope rounding, etc.).
4. Roadside Slopes
Proper molding of roadside slopes is essential during the grading operation. Slopes
which do provide a smooth visual transition from the street to existing land forms have a
pleasing appearance. Slopes shaped in this manner are also required for effective
erosion control, adequate drainage, and reduced maintenance. Some general
guidelines to follow when grading the roadside are set forth below:
a. Where the topography is flat to rolling and the landscape is open,
slopes which are flattened and well-rounded are appropriate. Flattening of slopes to 4:1
(4 horizontal to 1 vertical) should be carried out.
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b. Where the topography is steep, uneven, and wooded, roadside
slopes with grades of 2:1 of 3:1 should be favored to save roadside vegetation.
However, check to make sure the slope is flat enough to be stable.
c. Vary the steepness of roadside slopes to save vegetation and other
landscape features.
d. On areas of extreme cut, which may require easements or more
right-of-way, the use of small benches, stepped down a steep slope, will slow water
runoff and provide excellent locations where vegetation can quickly take hold. It is
important to maintain a slight downhill pitch on these benches to provide adequate
drainage.
e. On fill slopes of extreme length, larger benches can be formed to
fulfill the same functions as above.
f. All slopes should be well-rounded to form a smooth transition from
the shoulder edge to the existing grades. Deep ditches with well-defined bottoms are
required where drainage or soils are poor. Rounded or shallow ditches are acceptable
when there is little drainage and the soil is free draining.
g. All slopes should be warped by flattening the ends of cut and fill
areas. This will avoid sharp breaks between new and existing grades and result in
natural looking slopes that will more effectively support vegetation.
h. When grading the street, avoid disturbing important roadside
vegetation and the creation of deep cuts that expose tree roots and leave steep banks
that are susceptible to erosion and difficult to maintain.
5. Ditches
Ditches provide an important function in sustaining quality streets by providing adequate
storm and subgrade groundwater drainage. Excessively deep or wide ditches can
severely impact vegetation and the feel of a street or safety. Several issues to consider
when selecting a ditch section follows:
a. Slopes from the street to the ditch bottom shall be at least 4:1 or
greater. The shallower pitches will allow for some vehicle recovery and less potential of
a vehicle overturning on higher speed streets.
b. Ditches must be deeper than the subgrade to allow drainage of
street base and surfacing courses.
c. Where ditch construction may impact significant roadside features,
short sections of culvert, curtain drains or shallow or no ditches at all should be
considered, subject to approval by the City Engineer.
d. Ditches must be constructed to adequately carry the anticipated
water flow.
e. Biofiltration (or water quality) swales and grass buffer strips are
encouraged at all locations where the street gradient makes them a practical alternative
to regular street ditches.
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12.52.040 Design Requirements – New and Reconstructed Streets
The following minimum design standards shall apply to all new and reconstructed street.
Exhibits showing the basic cross-section requirements for the various street
classifications are shown in Figures 3-7a through 3-8 in EWMC 12.060.110.
A. Street Base and Surfacing Requirements
The following street surfacing requirements shall apply to all new and reconstructed
streets.
1. Surfacing
The minimum street surfacing requirements for various traffic volumes and locations are
shown in Table 3-1.
Table 3-1 Street Surfacing Requirements
Location
Figure
Traffic
Volume
(AADT)
Street Surface Type
Urban – Private 3-7a,b, 3-8 All ACP/HMA or PCC
Urban – Public 3-7a,b, 3-8 All ACP/HMA or PCC
1 BST Class A will be allowed for local access streets up to 400 AADT. All other classes
require ACP/HMA
2. Structural Sections – Public Streets
a. Design Procedure
A street section structural design procedure shall be performed for all new and
reconstructed public streets. The design life for all streets shall be 20 years with a
growth factor as determined by the City Engineer. The design procedure shall be
approved by the City Engineer and shall consider the following design elements.
i. Design Load – HS 20-44
ii. Total Design Life Traffic Loading – An estimate of the
number and types of loadings the street will carry for the design life. This estimate of
loading shall be determined using a procedure accepted by the City Engineer and be
expressed in 18-kip Equivalent Single Axle Loads (ESAL’s).
iii. Subgrade Support – One or more representative values for
the stiffness of the native material on which the street will be built. These values shall
be established by a procedure accepted by the City Engineer and be expressed as
resilient modulus.
iv. Analysis – A procedure for establishing the street structural
section for a given traffic loading and resilient modulus. This procedure shall be
approved by the City Engineer.
b. Construction Requirements
All structural sections including surfacing shall use materials meeting the specifications
of and be constructed in accordance with the WSDOT Standard Specifications.
Minimum compaction requirements shall be 91 percent for hot mix asphalt (asphalt
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concrete pavement) and 95 percent for crushed surfacing and base courses. See
Chapter 12.56 EWMC for details and further guidance.
3. Structural Section – Private Streets
Private streets with a projected AADT under 160 do not require street section structural
design; however the requirement for minimum thickness will apply. Private streets with
a projected AADT under 160 that are constructed without a street structural design will
not be eligible for future inclusion into the City street system without further structural
analysis as may be directed by the City Engineer.
4. Minimum Thickness
a. In all cases, the minimum street structural section shall be as shown
on Figures 3-7a through 3-8.
b. Many areas of East Wenatchee have soils excessively susceptible to
frost heave. The applicant or applicant’s engineer shall consult with the City Engineer’s
office as to those locations with known frost heave problems or with soils likely to
generate excessive frost heave. These locations may require additional base thickness.
B. Design Speed
Design speeds for streets shall be as shown in Table 3-2:
Table 3-2 Design Speeds
Terrain – Design Speed in MPH
Location/AADT Figure Flat Rolling Mount.
Urban – Private 1 3-7 25 25 20
Urban – Local Access 3-7 25 25 25
Urban – Collector 3-8 35 30 25
Urban - Arterial 3-8 45 45 45
1 Private urban shall meet the Urban Local Access standard
See EWMC 12.51.020(E) for terrain definitions.
C. Right of Way
The basic minimum rights-of-way for all streets are shown in Figures 3-7a through 3-8 in
EWMC 12.060.110. Additional right-of-way shall be required to accommodate other
street features such as additional lanes, planter strips and transit stops. Construction
and maintenance easements may be allowed for cut and fill slopes.
D. Lane, Shoulder and Street Width
Basic lane, shoulder and total street and surfacing minimum width requirements are
shown in Figures 3-7a through 3-8. Minimum widths are based on a combination of
street classification and traffic volume (AADT).
Urban street sections (Figures 3-7a and 3-7b) assume parking on both sides.
Applicants proposing utilization of no parking and parking one side alternates shall
propose the alternate section to the City Engineer for review in accordance with EWMC
12.50.100 of these Standards.
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Urban Collectors and Arterial sections (Figure 3-8) do not include provisions to
accommodate parking.
Where truck traffic exceeds 15 percent of the projected AADT, 12-foot lanes will be
required for all street classifications.
E. Ditch Slopes
The slope from edge of shoulder to bottom of ditch shall be 4:1 for all ditch street
sections. See EWMC 12.57.020 for cut and fill slope requirements
F. Sight Distance
All new streets shall be designed to achieve the following sight distances.
1. Stopping Sight Distance – AASHTO Green Book, current edition.
2. Intersection Sight Distance – WSDOT “Design Manual M22-10”,
Chapter 910.10, “Intersections at Grade – Sight Distance at Intersections” or current
edition.
3. Additionally, all arterials and collectors, with passing lanes, shall
address Passing Sight Distance – AASHTO Green Book, current edition.
G. Superelevation
Superelevation shall normally be applied to all new or reconstructed streets. The
maximum superelevation for streets with a design speed of 35 MPH or greater shall not
exceed 6 percent and for streets with a design speed under 35 MPH shall not exceed
4%, provided however, that the combination of superelevation and street gradient shall
not exceed 12% at any point on the street surface.
H. Horizontal Alignment (Curvature)
The minimum curve radius for all new or reconstructed higher speed urban streets shall
not be less than the ‘rounded radius’ values in the AASHTO Green Book, current edition
using a maximum superelevation rate of 6% for design speeds of 35 MPH or greater
and a maximum superelevation rate of 4% for design speeds under 35 MPH.
Low speed urban streets (design speed of 30 MPH or less) may use the minimum curve
radii as set forth in the AASHTO Green Book, current edition, based on a maximum
superelevation rate of 4%. Lesser curve radii may be used only with the permission of
the City Engineer.
I. Vertical Alignment
1. Maximum Grades. The maximum and minimum grades for each street
classification are shown in Figures 3-7a through 3-8.
a. Vertical curves.
b. Sag vertical curves shall be designed in accordance with the
AASHTO Green Book, “Design Controls for Sag Vertical Curves – Open Street
Conditions, and “Design Controls for Sag Vertical Curves”.
c. Crest vertical curves shall be designed in accordance with the
AASHTO Green Book, “Design Controls for Crest Vertical Curves – Open Street
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Conditions”, “Design Controls for Stopping Sight Distance and for Crest Vertical
Curves”, “Design Controls for Crest Vertical Curves Based on Passing Sight Distance”.
J. Vertical Clearance
The minimum vertical clearance for all streets under structures such as overpasses
shall be 16.5 feet
K. Design Vehicle
The physical characteristics of vehicles and the proportions of various sized vehicles
using the street system are positive controls in geometric design. For street design
purposes, three general classes of vehicles have been selected – passenger cars,
trucks and buses/recreational vehicles. The passenger car class includes compacts
and subcompacts plus all light vehicles and light delivery trucks (vans and pickups).
The truck class includes single-unit trucks, truck tractor-semitrailer combinations, and
trucks or truck tractors with semitrailers in combination with full trailers.
Buses/recreational vehicles include single-unit buses, articulated buses, school buses,
motor homes, and passenger cars or motor homes pulling trailers or boats. In addition,
where provision is made for bicycles on a street, the bicycle should also be considered
a design vehicle.
The dimensions for the 15 design vehicles representing vehicles within these general
classes are provided in the AASHTO Green Book. In the design of any street facility,
the largest design vehicle likely to use that facility with considerable frequency or a
design vehicle with special characteristics that must be taken into account in
dimensioning the facility is used to determine the design of such critical features as radii
at intersections and radii of turning streets.
Unless unusual sized vehicles must be accommodated, the typical design vehicle used
for design of streets shall be of the following classes:
Table 3- 3 Design Vehicles
Street Class Design Vehicles 1
Urban Arterials Large School Bus (S-BUS40)/Intermediate
Semitrailer (WB-50)
Urban Collectors Large School Bus (S-BUS40)/Single Unit Truck (SU)
Urban Local Access Large School Bus (S-BUS40)/Single Unit Truck (SU)
Private Single Unit Truck (SU)/Passenger Car (P)
1 Refer AASHTO Green Book, for specific design data
L. Cul-de-sacs and dead end streets
1. Permanent cul-de-sacs and dead end streets are not normally permitted
within new developments. Permanent cul-de-sacs will only be permitted where the
applicant can:
a. demonstrate that his/her design does provide an acceptable level of
network circulation considering the terrain and adjacent existing street network, and
b. demonstrate that the prohibition of cul-de-sacs will place an
unreasonable economic impact on the applicant.
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2. Where a permanent cul-de-sac or dead end street is permitted in
accordance with the provisions noted above, the following requirements shall apply:
a. Permanent street ends of 150 feet or less in length (measured from
the edge of traveled way of the intersecting street to the end of the street) shall have a
minimum right-of-way and street section as specified in Figures 3-7a through 3-8 and do
not require an access easement turnaround.
b. Permanent street ends between 150 and 600 (measured from the
edge of traveled way of the intersecting street to the beginning of the cul-de-sac) shall
have a minimum right-of-way and street section as specified in Figures 3-7a through 3-8
and be provided with a cul-de-sac as shown in Figure 3-9.
c. Permanent street ends in excess of 600 feet are discouraged but
may be allowed in cases where lots are large and/or difficult terrain exists, provided, the
number of single-family lots served by the street does not exceed 20 or the projected
AADT generated from the properties served by the street does not exceed 200. The
street shall have a minimum right-of-way and street section as specified in Figures 3-7a
through 3-8 and be provided with a cul-de-sac as shown in Figure 3-9.
d. The maximum gradient in any direction and at any point within a
cul-de-sac shall not exceed 4 percent
M. Intersections
All intersections shall be designed in accordance with Chapter 9, “Intersections” in the
AASHTO Green Book or Chapter 910, “Intersections at Grade” in the current edition of
the WSDOT “Design Manual M22-01”, which requires + 4% for 50 feet. All intersections
with a state highway shall require approval from the WSDOT.
Corner lots, located at street intersections, shall be rounded with a minimum 20 foot
radius adjacent to streets with 60-foot or more rights of way and 25 foot radius adjacent
to streets with less than 60-foot rights of ways.
N. Boundary (half) streets
Boundary or half streets may be permitted to be dedicated with less than the width
required by these Standards if the City determines that it practicable to require the
remaining portion of such width when the adjoining property is subdivided. Boundary or
half streets with widths less than those required by these Standards are not allowed
adjacent to public parkland or properties owned by public school districts
O. Transit Stops and Pull-Outs
Property owners and/or developers of proposed developments or other types of land
uses located within the LINK transit service area and which generate 200 average daily
or 20 peak hour vehicle trips, as determined by the City Engineer, shall negotiate with
the public transit authority, the improvements that would enhance the area for public
transit. Improvements may include bus shelters, pullouts, transit stops, and/or other
necessary facilities to offset transportation system impacts of the development and shall
be analyzed as part of a traffic impact analysis prepared in accordance with Chapter
12.59 EWMC.
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P. Curb and Gutter
1. Cement Concrete Curb and Gutter shall be utilized for street edges under
the following conditions.
a. In areas where urban street standards are to be used.
b. On frontages with commercial usage.
2. Rolled edge, thickened edge or mountable curbs are not permitted as a
substitute for curbs and gutters except on private streets and may only be used when
approved by the City Engineer.
3. On all sections constructed with curb and gutter a closed drainage system
consisting of catch basins, storm sewer pipes and manholes shall be required unless
alternative and appropriately designed methods of collecting and dispersing stormwater
such as bio-infiltration swales and drywells are provided.
4. Curb and gutter shall be constructed in accordance with WSDOT
Standard Plans.
Q. Sidewalks
1. Sidewalks shall be provided on both sides of all arterials, collectors, local
access streets and commercial streets in the City. Sidewalks shall be required on only
one side of the street on all perimeter arterial and major and minor collectors or half-
streets of a development being constructed under urban standards.
2. Alternatives to requirements noted above for sidewalks on all streets may
be approved under the provisions of EWMC 12.50.100 of these standards. Typical
conditions that may warrant approval of an alternative or waiver of the requirements
include existing streets where it would be unduly difficult or impractical to construct
sidewalks due to grade or steep slope problems or in developments where the basic
design allows for an off-street walkway system provided that said walkway is an
improved surface and provision for maintenance is guaranteed.
3. Sidewalks shall be constructed with Portland Cement Concrete.
Sidewalks shall be at least five feet in width and four inches in thickness for urban local
access streets. Urban collector and urban arterial sidewalks shall be at least 6 feet in
width. When adjacent to school property and in commercial areas, the sidewalks shall
be at least 8 feet in width. Sidewalk configurations shall be in accordance with the
WSDOT Design Manual and the WSDOT Standard Plans except for sidewalk width. All
sidewalk ramps and features shall be ADA compliant
12.52.050 Stormwater Management
A. All project submittals shall be in compliance with the provisions of Title 13
EWMC- Surface and Stormwater Management. In addition, all drainage facilities within
current or future City right of way must be of the type and nature that can be easily
maintained by the City. This typically includes as a minimum 12-inch diameter storm
sewer pipe and standard catch basins and manholes for curb and gutter street sections.
All other facilities such as French drains, curtain drains, drywells and stormwater
detention ponds shall be installed outside the City’s right of way and be maintained by
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the applicant or homeowner’s association. See also EWMC 12.55.050 “Plan Elements”,
Item J “Standard Plan Notes” for catch basin and grate requirements.
B. All cross culverts and ditch channelizations shall be first evaluated for the
presence of fish and, should it be determined by the City that the culvert or
channelization be designed to accommodate fish passage including stream bed and/or
stream bank enhancement, the culvert or channelization shall be constructed to meet
current Washington State Department of Fish and Wildlife standards.
C. Stormwater facilities shall also be designed to accommodate the stormwater from
the addition of frontage improvements including tributary area. In locations where future
development is expected at a higher elevation and adjacent to the proposed
development, the storm sewer pipe shall be extended and deadheaded at the
development property line to ease future system connection.
D. Projects requesting stormwater management fee credit from the City for the
stormwater facilities as provided for in EWMC Chapter 13, “Surface and Storm Water
Management Utility Code” shall be required to provide the City with a Project Engineer’s
Certification of the facilities prior to release of the financial security. The financial
security shall not be released until all facilities are completed and repaired as per the
approved plans.
E. The maximum spacing on surface drainage courses between inlets or catch
basins shall normally be 150 feet on street grades less than 1.0% and 200 feet on
grades from 1.0% to 3.0%. When the street grade is greater than 3.0%, the maximum
spacing shall be 300 feet. Additional catch basins may be required to confine drainage
to the gutter and prevent street drainage from sheet flowing across streets or
intersections. The applicant shall locate any additional catch basins or make other
drainage system improvements to insure that any street drainage does not encroach
more than one-half the traveled way lane width nor exceed one-half the curb height
during a rainfall design event of 2 inches in 90 minutes. Maximum spacing on main
storm sewers between access structures, whether catch basins or manholes, shall be
300 feet.
F. All materials used shall conform to the requirements of the Standard
Specifications.
12.52.060 New Utilities
A. Location of Utilities - Underground
1. Underground utilities to be installed within the right-of-way on new streets
(or on streets where existing topography, utilities or storm drains are not in conflict),
shall be located as shown in Figures 3-10 and 3-11. Where existing utilities or storm
drains are in place, new utilities shall conform to these standards as nearly as
practicable and yet be compatible with the existing installations. Utilities to be installed
outside the street right-of-way shall be installed within a designated utility easement and
shall meet the installation requirements of the utility.
2. Gravity systems, whether sanitary or storm drainage, shall have
precedence over other systems in planning and installation except where a non-gravity
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system has already been installed under previous approved permit and subject to
applicable provisions of such permits or franchises.
3. Individual water service lines shall:
a. Be placed with minimum 36-inch cover from finished grade, ditch
bottom or natural ground.
b. Use street right-of-way only as necessary to make side
connections.
c. For any one connection, not extend more than 60 feet along or
through the right-of-way, or the minimum width of the existing right-of-way.
d. Water meter boxes, when placed or re-placed, shall be located on
the right-of-way line immediately adjacent to the property being served, unless
otherwise approved by the City Engineer. Meter box locations within the right-of-way
may be approved by the City Engineer based on site conditions that make routine
service access difficult or impractical.
4. Sanitary Sewers:
a. In the case of individual sanitary sewer service lines which are
force mains the pipe shall:
(1).Be minimum two inches I.D., or as required by the utility to
maintain internal scouring velocity.
(2).If nonmetallic, contain wire or other acceptable proximity
detection features; or be placed in a cast iron or other acceptable metal casing.
(3).Be placed with minimum three-foot cover from finished grade,
ditch bottom or natural ground, within 10 degrees of perpendicular to street centerline,
and extend to right-of-way line.
b. Sanitary and water lines shall be separated in accordance with good
engineering practice such as the Criteria for Sewage Work Design, Washington
Department of Ecology, latest edition.
5. Service Connections - all
Mains and service connections to all lots shall be completed prior to placing of surface
materials.
6. Materials and Installation – all
All underground utilities shall utilize materials and be installed in conformance with the
requirements of the particular utility standards.
B. Location of Utilities – Above Ground
1. All poles, transformer cases, and other above ground utility appurtances
shall be located to avoid becoming a streetside obstacle. See 12.57.080 EWMC for
further guidance.
2. Above ground utilities located within intersections shall be placed so as to
avoid conflict with placement of curb ramps.
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12.52.070 Connections to Existing Utilities
Typically, new utility installations, both underground and overhead, constructed in
conjunction with land development require a connection to existing utilities.
Where such connections must utilize existing City right of way, the connection
must be performed in accordance with Chapters 12.04 and 12.16 EWMC.
Part 4 – Driveways, Access Easement, Pedestrian Facilities, Walks
and Trails
12.53.010 Driveways and Access Easement
A. General
1. Dimensions, slopes and details for all driveway and access easements
connecting to a City street shall be as indicated on Figure 4-1. Driveways entering
streets with curb and gutter shall meet the requirements contained within WSDOT
Standard Plans as approved by the City Engineer.
2. All new or revised driveways and accesses onto a City street (including
temporary or construction accesses) require from the City Engineer in accordance with
the provisions of this chapter.
B. Conditions for Approval of New Driveways and Access Easements
1. Driveways directly providing access onto arterials and collectors shall be
denied if alternate access is available. Access onto arterials and collectors may be
permitted where no other alternative is available and is approved by the City Engineer.
2. Where property has frontage on more than one street, driveways and
accesses shall be limited to the lowest volume street.
3. Circular driveways shall have a minimum separation of 100 feet.
4. In Urban areas, driveways and access easements should be located not
less than 150 feet from the nearest intersecting street as measured from the property
corner. Driveways and access easements should be located at the greatest distance
possible from an intersection of two streets. Driveways and access easements should
not be located closer than 125 feet from the nearest edge of the intersection as
measured from the closest point of the driveway edge when either intersecting street is
an arterial or collector and 75 feet when the streets are both local access streets. The
City Engineer may issue a permit for a driveway or access easement not meeting city
location and spacing criteria standards if a conforming connection is not attainable at
the time of the permit application submittal and denial would leave the property without
a reasonable means of connection to the street system. The City Engineer may require
the applicant to provide a traffic impact analysis to support the request for a
nonconforming driveway or access easement. Nonconforming driveway or access
easement permits shall specify conditions or limits including, but not limited to, the
following:
a. Joint use Connection. The city may issue a driveway or access
easement connection permit requiring a legally enforceable joint use driveway when
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determined by the City Engineer to be in the best interest of the city in maintaining the
operational efficiency and safety of the street.
b. Traffic Volume. The maximum vehicular usage of the connection shall be
specified in the permit.
c. Future Alternate Access. The permit shall specify that a conforming
connection be constructed if and when future alternate means of access becomes
available, and that the nonconforming connection must be removed.
d. Users. The permit shall specify the properties to be served by the
connection; and any other conditions as necessary to ensure the safe operation of the
driveway or access easement and the intersecting street.
5. In areas zoned residential, the minimum separation of individual parcel
driveways or accesses, as measured from the centerlines of the driveways or accesses,
shall not exceed one-half of the sum of the accessed parcel frontage and each of the
adjacent parcel frontages. Joint usage driveways may be required where sufficient
spacing is not available.
6. Only one driveway per single residential or commercial unit will be
permitted unless the applicant can demonstrate that additional driveways or accesses
are needed due to the amount of traffic generated by the project, traffic distribution
patterns, impacts to the City street system or public safety and there is sufficient space
to accommodate the additional driveway or access. Joint usage driveways are
encouraged.
7. All abandoned driveways shall be removed and restored by the applicant
or agent.
8. Maintenance of driveways and approaches (and associated culverts
where required) onto a City street shall be the responsibility of the applicant.
C. Standards
1. Common to all driveways and access easement.
a. Clear View Triangle
In addition to providing sufficient sight distances as required in part c. following of this
section, a clear view triangle as described in Chapter 10.28 EWMC shall be maintained
for vision safety purposes.
b. Alignment
All driveways and access easement shall intersect the main street at an angle between
75 and 105 degrees, with 90 degrees being preferable.
c. Sight Distance
Sufficient sight distances for vehicles to safely enter onto a public street or street as well
as for other vehicles on the street or street to avoid accidents with entering or exiting
vehicles is required for all driveways and access points. For all driveways and access
easement, stopping sight distance in accordance with the AASHTO Green Book is
required as follows:
Ordinance 2010-09 (PC Draft 2010_0601)
Exhibit B
Page 37 of 81
To calculate sight distance for existing streets serving a proposed driveway or access,
first convert the posted speed to an operating speed as per Table 4-1:
Table 4-1
Posted Speed Add for Operating
Speed
20 mph 0
25 mph 0
30 mph 5 mph
35 mph 5 mph
40 mph 10 mph
45 mph and above 10 mph
Secondly, use the operating speed and determine the minimum stopping sight
distances from Table 4-2 (based on an approaching vehicle driver’s eye height of 3.5
feet and an object at the driveway of 2.0 feet).
TABLE 4-2
Operating Speed
mph
Minimum Stopping
Sight Distance ft.
20 115
25 155
30 200
35 250
40 305
45 360
50 425
55 495
60 570
The grade of the street can also affect the minimum sight distance required. The
following Table 4-3 provides the increase for downgrades and the decrease for
upgrades modifiers.
Table 4-3
Increase (ft) for
downgrades
Decrease (ft) for
upgrades
Operating
Speed
mph
3%
6%
9%
3%
6%
9%
20 to 30 10 20 30 --- 10 20
31 to 40 20 40 70 10 20 30
41 to 50 30 70 --- 20 30 ---
51 to 60 50 110 --- 30 50 ---
Situations with sight distances less than the above must be approved by the City
Engineer. In these cases, the applicant may also be required to obtain the services of a
professional traffic engineer to assess the situation and provide written justification for
lesser sight distances.
Ordinance 2010-09 (PC Draft 2010_0601)
Exhibit B
Page 38 of 81
Sight distances shall be measured from a point ten (10) feet back of the edge of
shoulder or back of sidewalk each way along the edge of the traveled way of the main
street as shown in the figure below.
d. Drainage
Approaches shall be constructed in such a manner as to minimize the runoff from a
driveway or other access easement onto the main street.
All approaches at points where there is an existing roadsidestreetside ditch shall be
constructed with a culvert pipe meeting the specifications of the City Engineer.
e. Surfacing Within Right of Way
That portion of a driveway or access easement connecting to a paved public street that
is within the right of way of the public street shall be surfaced with a minimum of two
and one half (2-1/2) inches of compacted asphalt concrete pavement or equivalent
surfacing material to the street.
f. Maintenance
Maintenance of all driveways and access easement including approaches to public
streets shall be the responsibility of the owner(s). All shared driveways and access
easements shall have a maintenance agreement recorded with the final project
approval that specifies consistent maintenance in accordance with the approved project
plans.
2. Driveways and Joint Usage Driveways
Driveways and joint usage driveways serving no more than two lots have no minimum
width or surfacing requirements beyond requirements of EWMC 12.53.010(C)(1). The
minimum width of a driveway or a joint usage driveways is 20 feet.
a. Driveways providing access to one single-family home should have a
maximum improved width of 20 feet and a minimum improved width of 10 feet.
b. Joint use driveways should have a minimum improved width of 15 feet
and a maximum improved width of 30 feet. The width of the easement shall be
sufficient to accommodate the driveway surfacing, any required stormwater drainage
features, and any utilities. In no case shall the easement be less than 30 feet in width.
The full width of the easement shall be clear of sight obstructions to a height of 13 feet 6
inches. The maximum grade shall be 12 percent.
Sight Distance
Edge of sidewalk
or edge of shoulder
Edge of traveled way
10 ft *
* Not to exceed 18 ft from the edge of traveled way
Ordinance 2010-09 (PC Draft 2010_0601)
Exhibit B
Page 39 of 81
c. All driveways shall be improved with a minimum of 6 inches of
compacted gravel base, crushed surfacing base course or crushed surfacing top
course. The surfacing shall be concrete, asphalt or an alternative treatment providing
surfacing capable of supporting a typical residential vehicle load. The use of pervious
surfacing is encouraged.
d. All driveways greater than150 feet in length shall be improved with an
approved turnaround for emergency vehicles such as a cul-de-sac or hammerhead
unless the Fire Marshal determines that alternative access for fire protection is
available. See Figure 4-2 for acceptable turnaround designs.
3. Access Easements
Property accesses serving no more than four lots are access easements. Unless an
alternate approved emergency vehicle access is provided, access easements shall also
serve as an emergency vehicle access. Access easements are privately owned and
maintained by the property owners being served and are not the responsibility of the
City. Access easements shall comply with EWMC 15.16.010 and have the following
minimum requirements:
a. The minimum width of the tract or easement for an access
easement shall be 30 feet.
b. The minimum base shall be 6 inches of compacted gravel base,
crushed surfacing base course or crushed surfacing top course. The surfacing shall be
concrete, asphalt, or other approved surfacing capable of supporting the imposed load
of fire apparatus weighing at least 75,000 pounds.
c. The base and surfacing shall provide a minimum unobstructed
width of 20 feet. Where a fire hydrant is located on an access easement, the minimum
unobstructed surface width shall be 26 feet
d. Suitable drainage in the form of ditches and cross culverts shall be
provided along the full length of the access easement. Any bridges or drainage
structures shall meet the requirements of Chapter 12.55 EWMC.
e. All dead end access easements greater than 150 feet in length
shall be improved with an approved turnaround for emergency vehicles such as a cul-
de-sac or hammerhead. See Figure 4-2 for acceptable turnaround designs. The length
of an access easement shall not exceed 450 feet, excluding the turnaround unless
otherwise approved by the City Fire Marshal,.
f. Access easement to more than four lots shall be via an urban local
access City or private street meeting the requirements of Chapter 12.53 EWMC as
included in these Standards.
g. The minimum centerline radius of curvature shall not be less than
45 feet, provided however, if an approved alternate emergency vehicle access in
provided, the minimum centerline radius of curvature shall not be less than 30 feet.
h. The maximum grade shall be 10 percent for gravel surfacing and
12 percent for paved portions.
Ordinance 2010-09 (PC Draft 2010_0601)
Exhibit B
Page 40 of 81
i. The minimum clear vertical distance shall not be less than 13’-6”.
j. Appropriate provisions shall be made for snow storage.
k. All dead end access easements greater than 150feet in length shall
be improved with an approved turnaround for emergency vehicles such as a cul-de-sac
or hammerhead. See Figure 4-2 for acceptable turnaround designs.
12.53.020 Pedestrian Facilities (Urban areas)
Sidewalks are required on both sides of urban streets. See EWMC 12.52.040(R) for
details and exceptions.
12.53.030 Walkways, Bikeways and Trails
Walkways, bikeways and trails shall be required as identified in the applicable
comprehensive plan or separate Non-Motorized Transportation Plan.
Non-motorized transportation includes travel by bicyclists, pedestrians, and equestrians.
Sections 1020 and 1025 of the WSDOT Design Manual will be followed for design of
bicycle paths, trails and other non-motorized transportation.
12.53.040 School Access
Sidewalks for school access shall be provided in accordance with the safe walking
plans as developed by individual schools and school districts. In addition, walking paths
or sidewalks will be required in new plats to facilitate access to schools.
12.53.050 Alleys
Where provided, every alley at the rear of a lot shall have a minimum width of 20 feet.
Structural and surfacing requirements shall be the same as the adjoining streets. No
dead-end alley or alley with sharp changes in direction shall be permitted.
Part 5– Bridges and Drainage Structures
12.54.010 Design Standards
A. All culvert pipe, box culverts, and bridges shall conform to the following:
1. AASHTO Standard Specifications for Highway Bridges, latest edition and
applicable interim versions.
2. WSDOT, Standard Specifications for Street and Bridge Construction,
latest edition.
3. WSDOT, Bridge Design Manual, latest edition
4. WSDOT, Bridge Detailing Manual, latest edition.
B. A hydraulic analysis shall be performed for all culverts, open channels and box
culverts in accordance with the WSDOT Hydraulics Manual. Such drainage structures
shall be sized and located as per the analysis, provided however, that no cross culvert
shall be less than 18 inches in diameter.
C. All bridges shall be constructed of reinforced concrete. Spans may be pre- or
post-tensioned concrete girders or beams with a concrete deck. Steel or other metal
Ordinance 2010-09 (PC Draft 2010_0601)
Exhibit B
Page 41 of 81
bridges may be used only with the approval of the City Engineer. Treated timber
bridges may be used on private streets only.
D. Bridge clear width shall accommodate the full width of the traveled lanes, parking
lanes and shoulders of approach streets. Bikeway and pedestrian walkways shall be
provided where required.
E. All street structures must be designed in accordance with the minimum standards
contained within the current edition of the WSDOT Bridge Design Manual. However new
bridges on private streets may be designed for a HS20 loadings and a minimum width
equal to the traveled way plus two (2) feet.
F. All box culverts and bridges shall have the year of construction permanently
indentured on the downstream headwall face in legible numbers. The numbers shall be
3" high by 1-1/2" wide by approximately 3/8" deep in the headwall face.
G. All box culvert, pipe arch, structural plate culverts and bridge designs shall be
done by a registered professional structural engineer licensed in the State of
Washington. The complete design of the structure shall be submitted to the City
Engineer for approval.
H. Foundation designs shall be based upon the recommendations of a qualified
geotechnical engineer and shall include a scour analysis for the protection of existing
streambed and footing elevations. These recommendations shall be documented in the
geotechnical report which shall accompany the bridge design documents.
I. A new structure shall not create a backwater elevation rise of more than one foot.
The bottom of the superstructure of bridges shall be a minimum of three feet above the
100-year flood elevation.
J. Various permits may be required and are the responsibility of the applicant.
Such permits may include, but are not limited to, the following:
1. Bridges over navigable waters require U.S. Coast Guard permits.
2. Bridges involving deposition of material in waters of the United States or
their adjacent wetlands require a U.S. Army Corps of Engineers Permit.
3. Any work involving alteration of flow or bed materials below the ordinary
high water line of any water body or water course requires a Hydraulic Project approval
from the State Department of Fish and Wildlife.
4. Any project requiring a U.S. Army Corps of Engineers Permit also requires
a Water Quality Certification from the State Department of Ecology.
5. Bridges across streams in State Flood Control Zones require a permit
from the State Department of Ecology.
6. Where Bridge structures lie on or over submerged lands, a lease from the
Washington State Department of Natural Resources may be necessary.
7. Structures located on shoreline zones as defined in the East Wenatchee
Shoreline Master Program require a substantial development permit from East
Wenatchee, subject to concurrence of the State Department of Ecology.
Ordinance 2010-09 (PC Draft 2010_0601)
Exhibit B
Page 42 of 81
8. Structures in Critical Areas as defined in EWMC Title 18 require Critical
Area permits from East Wenatchee.
12.54.020 Inspections
The developer and his engineer are responsible for inspection, quality control and
sufficiency of the completed structure subject to approval by the City engineer.
All materials and testing thereof shall conform to the current edition of the WSDOT
Standard Specifications. Prior to construction, the City Engineer shall review with the
developer’s engineer the required inspections and documentation required.
12.54.030 As-Built Plans
Upon completion and acceptance of any box culvert or bridge built under these
standards, a complete set of as-built plans shall be furnished to the City Engineer. See
EWMC 12.55.060 for further guidance.
12.54.040 Existing Bridges and Drainage Structures
A. Prior to any land division approval and as directed by the City Engineer, an
inspection of existing bridges and drainage structures within the boundaries of the
development shall be conducted by a licensed professional structural engineer
knowledgeable of bridge design, construction and load ratings. The engineer shall
submit a report indicating the condition of the existing bridge as to the requirements set
forth in these standards in regards to load function, superstructure and abutments.
B. Existing bridges and drainage structures within the boundaries of the
development that do not meet the standards of this section shall be replaced with new
bridges and drainage structures or the existing bridges and drainage structures shall be
modified as necessary.
C. Should the development review process identify off-site locations where the
existing streets must be widened or realigned as a condition of development approval
(see EWMC 12.50.150), all affected bridges and drainage structures shall be evaluated
in the same manner as for those within the boundaries of and fronting the development.
All necessary widenings, extensions or replacements necessary to accommodate the
new street width or alignment and meeting both the structural and hydraulic adequacy
as set forth herein shall be designed as set forth in EWMC 12.54.010.
Part 6 – Construction Plans
12.55.010 General Requirements
All construction plans and drainage reports, soils reports and pavement designs shall be
prepared by, or under the direction of, a professional engineer, registered in the State of
Washington, and shall be reviewed for the minimum requirements set forth herein. The
engineer should be aware that whenever unusual or serious problems are anticipated in
conjunction with a proposed construction project, additional information and analysis
beyond the minimum requirements of these specifications and criteria will be required.
In all cases, the engineer shall comply with all local, State and Federal regulations
applicable to the project.
12.55.020 Certification
Ordinance 2010-09 (PC Draft 2010_0601)
Exhibit B
Page 43 of 81
A. Construction plans submitted for review and comment shall be prepared by a
professional engineer, registered in the State of Washington. The plans must include
the following statement on the cover sheet:
These construction plans for (name of subdivision, development, or project) were
prepared by me (or under my direct supervision) in accordance with the
requirements of the East Wenatchee Street Standards
Name of Engineer
Name of Firm
Date
The statement shall be signed and stamped by the Registered Professional Engineer
who prepared or directed preparation of the construction plans.
B. Unless otherwise identified or noted, all construction plan submittals are
assumed to comply with the provisions of this manual. Alternatives to these standards
may be requested as set forth in Chapter 12.50 EWMC . Failure to follow prescribed
procedures may result in return of submittals, additional review fees, or both.
C. East Wenatchee shall not be responsible for the accuracy and adequacy of the
design or dimensions and elevations on the plans. East Wenatchee, through the
acceptance of the construction plan or drainage report and other supporting documents,
assumes no responsibility for the completeness and/or accuracy of the construction
plan or drainage report. The cover sheet shall bear the following statement:
The engineer who has prepared these plans, by execution and/or seal hereof
does hereby affirm responsibility to the City, as a beneficiary of said engineer's
work, for any errors and omissions contained in these plans, and approval of
these plans by the City Engineer shall not relieve the engineer who has prepared
these plans of any such responsibility.
G. The plans, reports, basin maps and calculations shall be signed, sealed and
dated by the applicant’s engineer. The cover sheet of the plan set and the cover sheet
of all calculations shall bear the certification by the applicant’s engineer that reads:
“The design improvements shown in this set of plans and calculations conform
to the current edition of the East Wenatchee Street Standards. All design
variances have been approved by the East Wenatchee Engineer. I approve
these plans for construction.”
12.55.030 When Plans are not Required
Subject to review, the City may waive plan requirements, wholly or in part, based upon
the following criteria:
For improvement to existing public streets if each of the following requirements are met:
A. No more than 5,000 square feet will be cleared and graded within the right-of-
way or easement, and
B. The existing street grade does not exceed 10%, and
C. The existing street has a uniform cross section, and
Ordinance 2010-09 (PC Draft 2010_0601)
Exhibit B
Page 44 of 81
D. The work does not intercept a stream or wetland or otherwise impact natural
surface drainage as set in City Code regarding critical areas, shorelines and surface
water; and
E. Plans do not include a retention/detention facility within the right-of-way; and
F. East Wenatchee standard drawings, submitted with required permits, are
sufficient to describe the improvement to be constructed.
12.55.040 Submittal Procedure
Plans for proposed street and drainage construction shall be submitted to the
Community Development Department as follows:
A. The first submittal shall consist of three (3) complete sets of prints together with
drainage calculations and other necessary supporting information, and shall be signed
and stamped by the applicant’s engineer. The applicant’s engineer must be a registered
engineer in the State of Washington. Review fees, when applicable, shall be paid by the
applicant before review of the plans by the City commences.
B. If corrections are required, the City will return a redlined print showing necessary
corrections. When corrections are required, the applicant’s engineer shall return the
redlined print with the corrected plans. Plans and reports submitted later than 1 year
from the date that the City redlines are returned to the applicant or applicant’s engineer
shall be subject to additional hourly review fees in accordance with the East Wenatchee
fee schedule.
C. Subsequent submittals shall also contain three (3) complete sets of plans and
other supporting information, if corrected. When all corrections have been made to the
City Engineer’s satisfaction, the original Mylar set of plans will be signed and returned to
the applicant’s engineer. The final plans will require stamping and signature of the
applicant’s engineer.
D. The applicant’s engineer shall provide the City with a good quality reproducible
Mylar with the applicant’s registration stamp and signature plus two complete sets of
prints of the approved plans and one complete set of other supporting documentation.
Where plans are prepared in an electronic format such as AutoCad or another format
acceptable by the City, the applicant’s engineer shall also provide copies of the
electronic data files to the City. The applicant’s engineer shall also provide a quantity
take-off and engineer’s cost estimate of proposed construction when the project is to be
secured by some form of performance guarantee.
E. Plans will be reviewed by the City according to the date they were submitted.
Previously reviewed or approved plans submitted to the City for a revision will be
considered a new submittal. Approved plans under construction will be considered a re-
submittal and will be reviewed prior to new submittals.
12.55.050 Plan Elements
The following plan elements shall be provided on all construction plans:
A. Vicinity map
Ordinance 2010-09 (PC Draft 2010_0601)
Exhibit B
Page 45 of 81
Minimum scale is 1”=1000’ showing the location and name of all arterial streets within
one mile of the proposed construction, and all other streets in the vicinity of the
proposed construction. Shading shall indicate the project area. This map is required on
the cover sheet or first sheet of all submittals, if no cover sheet has been used. The
vicinity map shall show all arterial streets and major drainage ways. Section, Township,
and Range shall also be shown.
The minimum size of the vicinity map shall be 10” x 10”.
B. Title block
A title block is required on every sheet and cover sheet submitted for review and
acceptance. The subdivision name and filing number; Planned Development name (if
applicable); the type of improvement; name, address, including zip code, and telephone
number and name of the consulting engineer; name, address, including zip code,
telephone number and name of the contact person at the developer; and sheet number
(consecutive, beginning with the cover sheet) shall be included in the title block. The
title block shall be located in the extreme lower right hand corner, the right side margin,
or along the bottom edge of the sheet.
The title block must also have sufficient space to show the nature, date and approval of
all revisions.
The original date of the plans and any subsequent revisions must be shown in the title
block.
C. Acceptance block
1. All street construction plans, storm sewer or other drainage improvement
construction plans, and privately or publicly maintained storm water detention or
retention facility construction plans must show the acceptance signature of the
designated representative of the City Engineer. Where there are existing utilities within
the right-of-way, an additional acceptance block for each utility shall be included.
2. Plans for traffic control during construction must be accepted prior to
issuing construction permits.
3. Plans for construction stormwater pollution prevention must be accepted
prior to issuing construction permits.
4. Signing/Striping plans require acceptance prior to issuing construction
permits.
5. The acceptance block shall be located in the lower right hand quadrant of
the cover sheet.
6. Acceptance block shall be as follows:
“These plans have been reviewed by East Wenatchee Street Department
and have been accepted for complying with the requirements of East
Wenatchee Street Standards. These plans are valid for three years from
the date of acceptance.
_____________________ _______________
Ordinance 2010-09 (PC Draft 2010_0601)
Exhibit B
Page 46 of 81
City Engineer Date
D. Scale
The following scales are the minimum required. More detailed scales will be required
where necessary to clearly show details.
1. Plan and profile plans: Horizontal 1"=50', Vertical 1"=5'.
2. Master, preliminary, and final drainage plans; site plans, etc.: from 1"=50'
to 1"=100'.
E. Seal/signature
The seal and signature of the owner's engineer, under whose supervision the plans
were prepared, shall be located next to the Acceptance Block on each sheet.
F. Utilities
The type, size, location and number of all above ground and underground utilities shall
be shown. Field verified elevations and locations may be required on the construction
plans for all underground utilities which will potentially affect the design or construction.
It will be the responsibility of the contractor to verify the existence and location of all
underground utilities along their route of work prior to commencing any new
construction. Field located utilities not shown on accepted construction plans shall be
added to the record (as-built) drawings submitted as a condition of conditional
acceptance of the public
G. Private improvements
1. Private improvements such as streets, driveways, utilities, etc. shall be
clearly shown and labeled as such on each sheet of the construction plans. The note
below shall appear on the cover sheet of the construction plans for private
improvements:
East Wenatchee shall not be responsible for the maintenance of street and
appurtenant improvements, including storm drainage structures and pipes, for
the following private streets: (list).
2. When a request is made for the City to assume maintenance of any
private improvement, it shall be the responsibility of the person(s) making the request to
satisfactorily demonstrate that the private improvement is in fact constructed in
accordance with the current East Wenatchee Street Standards for City streets. In
addition, all necessary right-of-way must be transferred to the City and the street
established by the City Council as per RCW.
3. East Wenatchee will not accept maintenance responsibilities for private
street improvements associated with land development activities. In no case shall
private improvements not constructed in accordance with the applicable design and
construction standards and specifications be accepted for maintenance by East
Wenatchee.
H. Street plan, profile elements and details
Ordinance 2010-09 (PC Draft 2010_0601)
Exhibit B
Page 47 of 81
In addition to the requirements set forth elsewhere in these standards, the following
information shall be shown on all street plans submitted for review and approval.
1. Plan View - The plan view shall include, but not be limited to, the following:
a. Existing and proposed Property and/or R.O.W. lines, easements
and/or tracts and/or irrigation ditch(s). Type and dimension of easement or tract is to be
clearly labeled. R.O.W. lines with individual parcel or lot frontages are to be
dimensioned.
b. Survey lines and stations shall normally be based on centerline of
street; other profiles may be included but shall be referenced to centerline stationing.
c. Streets and street names.
d. North arrow
e. Street alignments with 100-foot stationing, reading from west to
east/south to north including stationing and dimensions of all street width variations from
the typical street section(s).
f. All topographic features with right of way limits and sufficient area
beyond to resolve questions of setback, slope, drainage, access onto abutting property,
and street continuations. A minimum of 100 feet shall be shown on either side of
centerline and a minimum of 200 feet shall be shown from the terminus of the street, or
such additional terrain as directed by the City Engineer.
g. Existing utilities and structures, including, but not limited to:
Storm sewer & appurtenances, fence lines & gates, water lines &
appurtenances, irrigation, ditches or swales, electric lines & appurtenances, curbs and
gutters, sewer lines & appurtenances, pavement limits, telephone lines &
appurtenances, bridges or culverts, cable television lines & appurtenances, guardrails,
signs, gas lines & appurtenances, etc.
h. Station and critical elevation (flow line, invert of pipe, etc.) of all
existing and proposed utility or drainage structures. Location of utilities shall be
dimensioned horizontally and vertically from street centerline profile grade.
i. Storm drainage flow direction arrows, particularly at intersections and
all high and low points.
j. Match lines and consecutive sheet numbers, beginning with cover
sheet.
k. Station and elevation of all horizontal curves including PI, PC's, PT's,
etc.; high or low point and PI of all vertical curves; existing and proposed, centerline
bearings, distances, and complete curve data including superelevation data and pivot
point locations.
l. Curb return radii, existing and proposed including stations and
elevations of all curb returns; mid point elevations, and flow line-flow line intersection
elevations and grades.
m. Mid-block handicap ramp locations at tee intersections.
Ordinance 2010-09 (PC Draft 2010_0601)
Exhibit B
Page 48 of 81
n. Centerline stations of all non-single family residential driveways and
all intersecting streets.
o. Survey tie lines to section corners or quarter corners, consistent with
that shown on the plat.
p. Typical street cross section for all streets, existing or proposed, within
and adjacent to the proposed development. These cross sections shall appear on the
detail sheet, or if no detail sheet has been used, the first sheet of the submittal showing
street design. They shall indicate type of street(s), profile grade design point (centerline,
flow-line, top of curb, lip of gutter, etc.), street width, right-of-way, type of curb, gutter
and walk, pavement cross slope, pavement thickness, and structural material
components of the pavement, base and sub-base, together with specifications for
treatment of subgrade and installation of pavement structural members.
q. Construction plans for arterial improvements. Any street intersecting
an arterial, or any collector intersection requiring signalized traffic control shall include
construction and lane details for the new construction and existing facilities a minimum
of 150 ft beyond the limits of construction.
2. Profile - The profile shall include, but not be limited to, the following:
a. Original ground (dashed) and design grade (heavy, solid). Both
grades are to be plainly labeled.
b. All design elevations shall be centerline, top of curb, lip of gutter, or
flow line (preferred) for 6 in. vertical curb and gutter; or back of walk, or lip of gutter, or
flow line (preferred) for combination curb, gutter and walk. The basis of record drawing
information shall be the same as the design (both flow line or both top of curb, etc.).
Ditch profiles may be required for street sections at the discretion of the City Engineer.
c. Stationing continuous for the entire portion of the street shown in the
plan view, with the centerline station of all non-single family driveways and all
intersecting streets clearly labeled.
d. All existing curbs, gutters, sidewalks and pavement adjacent to the
proposed design. Basis for existing grades shall be as-built elevations at intervals not to
exceed 25 feet. Previously approved designs are not an acceptable means of
establishing existing grades.
e. Existing and new utilities. Elevation and location of all utilities in the
immediate vicinity of the construction shall be shown on the plans.
f. Station and elevation of all vertical grade breaks, existing (as-built)
and proposed.
g. Distance and grade between VPI’s.
h. Vertical curves, when necessary, with VPI, VPC, and VPT, high or
low point (if applicable) stations and elevations. All vertical curves shall be labeled with
length of curve (L) and K=L/A where A is the algebraic difference in slopes, in percent.
i. Superelevation data including pivot point locations shall be required
and included for all streets with a design speed of 30 miles per hour or higher.
Ordinance 2010-09 (PC Draft 2010_0601)
Exhibit B
Page 49 of 81
j. Profiles for all curb returns (except medians).
3. Details - All details necessary for a complete set of plans that are not
covered by reference to the WSDOT Standard Plans such as walls, special drainage
elements, major culverts, etc. shall be included in the plans.
4. Standard Plans – The submitted plans shall include copies of all WSDOT
Standard Plans referenced within the plans.
I. Temporary Erosion Control Plan
A temporary erosion/sedimentation control plan, showing the location and control
measures intended to minimize the effects of erosion and siltation due to construction
operations shall be submitted with the construction plans and shall conform to the
requirements of the WSDOT Standard Specifications and the Stormwater Management
Manual for Eastern Washington.
J. Notes
In addition to other notes required in these Standards, the following notes shall appear
on the cover sheet of all submittals containing street plans:
Standard Plan Notes
1. All materials and workmanship shall be in accordance with the
requirements of the most current edition of the State of Washington, Department of
Transportation Standard Specifications for Street and Bridge Construction and East
Wenatchee Street Standards.
2. Catch basins shall be Type 1 or Type 2, WSDOT Standard Plans, with
standard, vaned or herringbone frame and grate unless otherwise noted. The outside
edge of the catch basin shall be placed at the intersection of the curb and gutter and
0.010’ to 0.015’ below finished grade, or in the gutter line of the rolled edge section.
3. If adequate inspection is not completed and documented before
completion of the street construction, it may be necessary for core drilling and testing to
be performed to assure an acceptable quality of street. When core drilling is found to be
necessary, the applicant will be held responsible for all costs incurred.
4. It will be the applicant’s responsibility to contact all utility companies in
order to assure that all lines, pipes, poles and other appurtenances are properly located
and their installation is coordinated with the street construction. All utility relocation work
shall be at the expense of the applicant and must be in accordance with East
Wenatchee Street Standards prior to street acceptance.
5. Culvert pipe shall be galvanized steel or plastic (ADS smooth wall) 12-
inch diameter minimum pipe with beveled ends unless otherwise noted. Beveled ends
shall match the in-slope in the ditch line or match the slope in a cut or fill section.
6. Buried utilities are shown in their approximate location. The applicant
shall have the utilities verified on the ground prior to any construction.
7. Onsite erosion control measures shall be the responsibility of the
applicant and be in place prior to construction. Any problems occurring before final
Ordinance 2010-09 (PC Draft 2010_0601)
Exhibit B
Page 50 of 81
acceptance by East Wenatchee and within 18 months thereafter shall be corrected by
the applicant. At the end of the 18-month period, or as otherwise directed by the City
Engineer, the applicant shall remove all temporary, non-degradable erosion control
measures.
8. In accordance with the Department of Ecology Air Quality Standards, the
applicant shall be responsible for controlling all fugitive dust that may be generated by
the construction project.
9. Any revisions to plans must be made by the applicant’s engineer and
approved by the City Engineer prior to any implementation in the field.
10. All pavement markings shall conform to the requirements of the MUTCD.
11. Before striping takes place the applicant shall contact the East
Wenatchee Street Department for coordination of the striping.
12. A copy of the approved plans must be on the job site whenever
construction is in progress.
13. Slopes shall be stabilized to prevent erosion. In case erosion occurs in
ditches, ditch lining is to be provided as requested and specified by the City.
14. Where newly constructed paving meets existing paving, the applicant
shall saw cut and overlay and feather new pavement to provide a smooth transition from
existing to proposed paving. Application of a thin tack coat of emulsified asphalt shall be
applied to insure proper bonding.
15. The completed surface of all courses shall be of uniform texture, smooth,
uniform as to crown and grade, and free from defects of all kinds. The completed
surface of the wearing course shall not vary more than 1/8 inch from the lower edge of a
10-foot straightedge placed on the surface parallel to the centerline. The transverse
slope of the completed surface of the wearing course shall vary not more than 1/4 inch
in 10- feet from the rate of transverse slope shown on the plans.
16. Materials sampling and testing shall be at a frequency and magnitude as
specified in the Standard Specifications or determined by the City Engineer. A private
and independent testing laboratory shall perform testing and sampling. Certified test
reports shall be furnished for all tests performed by private testing laboratories.
K. Signing and striping Plan
Permanent signage and striping shall be complete and in place before any new street is
opened to the public. Traffic signal installation and equipment shall conform to the
Washington Department of Transportation Standards and Specifications. The Manual
on Uniform Traffic Control Devices Signal Warrants shall be met for signal installation.
All subdivisions, street improvement projects, and/or commercial development must
incorporate a separate signage and striping plan in accordance with the following
criteria:
1. Submittal - Separate signage and striping plans are to consist of an overall
area map noting all specific use areas, such as schools, parks, recreation centers,
Ordinance 2010-09 (PC Draft 2010_0601)
Exhibit B
Page 51 of 81
library, commercial, industrial, etc. The pages following the area map are to be broken
down into street segments, for notation of signage and striping details.
2. Sign Warrants - Traffic control devices which are not warranted by
MUTCD shall not be installed. When MUTCD guidelines are not applicable for a given
case, a traffic engineering study by the owner's engineer will be required. This study will
address the existing conditions, safety issues, and the applicable warrants.
L. Monuments and benchmarks
See EWMC 12.58.040 “Survey Monuments”
12.55.060 General Standards for Subdivision Final Construction Plans
The following general standards shall be met for final construction plans.
A. All street and storm sewer construction must conform to the East Wenatchee
street and stormwater standards current at the time of plan approval.
B. All traffic control devices must conform to the Manual on Uniform Traffic Control
Devices.
C. Prior to release of collateral by East Wenatchee the developer must present a
statement from an engineer registered as a professional engineer in the State of
Washington that the project has been completed in substantial compliance with
approved plans and specifications and documenting that the engineer has made regular
on-site inspections during the course of construction, and the field plans utilized were
the same as those approved by East Wenatchee. The engineer shall also state that
quality control testing has been undertaken for the project, which testing demonstrates
compliance with the plans and specifications approved by East Wenatchee. The
developer must also submit the following items prior to release of collateral:
1. “As-built” plans for the improvements must be submitted at the time the
letter requesting collateral release is submitted. The “as-built” plans must be clearly
labeled as such, and must be signed and dated by a registered professional engineer.
They must show any deviations from the approved plans. Release of collateral will not
occur if the City Engineer determines deviations are present which have not received
prior approval.
2. A letter or letters of acceptance and responsibility for maintenance of the
improvements by the appropriate utility company, special district, or town for all utilities
and streets.
3. A letter from the appropriate fire authority stating that fire hydrants, where
required, are in place in accordance with the approved plans. The letter shall also state
that the fire hydrants are operational and, if required by the Fire Marshal provide the
results of fire flow tests.
4. For streets under consideration for adoption to the City street system:
Quality control test results must be submitted for all phases of the project in accordance
with Washington State Department of Transportation's schedule for minimum materials
sampling, testing, and inspection as found in the WSDOT Materials Manual. The City
Ordinance 2010-09 (PC Draft 2010_0601)
Exhibit B
Page 52 of 81
Engineer shall review and approve a proposed schedule of testing before
commencement of construction
Part 7 – Construction Control and Inspection
12.56.010 Basis for Control of the Work
A. Work performed in the construction or improvement of City streets, whether by or
for a private developer, by City forces, by City Contractor or by private contractor, shall
be done in accordance with these Standards and approved plans. IT IS EMPHASIZED
THAT NO WORK MAY BE STARTED UNTIL SUCH PLANS ARE APPROVED. Any
revision to such plans shall be approved by the City Engineer before being
implemented.
B. The City Engineer will have authority to enforce the Standards as well as other
referenced or pertinent specifications.
C. Provisions of Section 1-05 of the WSDOT Standard Specifications shall apply,
with the term “Engineer” therein construed to be the City Engineer as defined in these
Standards.
D. Unless otherwise approved or directed, all construction work shall be done in
accordance with the WSDOT Standard Specifications.
E. Prior to beginning construction activities within existing right-of-way, a permit to
perform work in the right of way shall be secured. Restoration sureties may be required
by the City Engineer in the manner provided for in EWMC 12.50.110 of these
Standards.
12.56.020 Hours of Work
Unless otherwise approved by the City Engineer prior to beginning construction, the
normal work hours for construction are as follows:
Monday through Friday 6:00 am to 7:00 pm
Saturday 7:00 am to 7:00 pm
Sunday 8:00 am to 7:00 pm
Ordinance 2010-09 (PC Draft 2010_0601)
Exhibit B
Page 53 of 81
12.56.030 Subdivision, Commercial and Right-of-Way Development Inspection
A. The City Engineer will appoint such personnel as necessary to inspect the work
on public street and drainage projects undertaken by the City and on all access permits,
and they will exercise such authority as the City Engineer may delegate. On all other
projects including all subdivision construction work and improvements on unopened City
right-of-way, the applicant’s Engineer shall be responsible for all inspections outlined in
this section.
B. Failure to comply with the provisions of these Standards may result in stop work
orders, removal of work accomplished, or other penalties as established by law.
12.56.040 Certification of Inspections and Testing
For all street and drainage work, other than that performed by the City on City street
and drainage projects and access permits, the City requires the applicant to engage the
services of a professional engineer to document and certify all inspections and testing
during the construction process. It is also the responsibility of the applicant and their
engineer to provide the day-to-day inspection of such work, perform such inspections
and testing of materials and their placement as may be required, and to certify all such
inspections and testing including compliance with the approved plans and these
Standards. A daily activity diary shall be kept by the applicant’s engineer or his/her
designee for all days that there is street or drainage work performed on the site. Copies
of all test records, inspection records and the daily diary shall be furnished to the City
Engineer on a weekly basis. At the time of each of the inspections as set forth in EWMC
12.56.050, the City Engineer or his/her designee will visit the project site to review the
work related to the required inspection. Such site visits do not relieve the applicant, the
contractor or the applicant’s engineer of any responsibilities for performing all work in
accordance with the approved plans and these Standards. The City Engineer or his/her
designee may also visit the project site from time to time to monitor the overall progress
of the project.
12.56.050 Inspection and Notification Requirements
A. On all street construction by subdivision ordinance and work performed within the
City right-of-way, inspection of the work will be done by the applicant’s engineer or
his/her designees under the overall authority of the City Engineer. Unless otherwise
instructed by the City Engineer, the inspections will be made by and certified by the
applicant’s engineer as follows:
Inspection #1. Temporary sedimentation and erosion control in accordance with
approved plans.
Inspection #2. Underground storm drainage, at the stage that trenching and
placing of pipe are completed but prior to cover. If the scope of the project is
such that there is more than one trenching, placing and covering is required,
each such sequence shall be inspected separately.
Inspection #3. Underground utilities within the right-of-way, including sewers and
storm drainage, shall be inspected during backfilling for compliance with the
Standard Specifications and the requirements of the utility permit issued in
conformance with the East Wenatchee “Accommodation of Utilities Within City
Street Right-of-Way”.
Ordinance 2010-09 (PC Draft 2010_0601)
Exhibit B
Page 54 of 81
Inspection #4. General roadway at the stage that the subgrade has been
completed. If the scope of the project is such that the subgrade is completed in
stages and is ready for surfacing materials, each such stage shall be inspected
separately.
Inspection #5. General roadway at the stage that the gravel base has been
placed and compacted and the curbing, if required, has been formed. If the
scope of the project is such that the gravel base is completed in stages and is
ready for additional surfacing materials, and the curbing, if required, has been
formed for that section, each such stage shall be inspected separately.
Inspection #6. General roadway at the stage that crushed surfacing top course
has been placed and compacted.
Inspection #7. General roadway, at the beginning of paving.
Inspection #8. Overall roadway, final, after paving, monument inspection,
cleaning of drainage systems, and all necessary clean up.
Structural Inspections. Structural inspections shall be at critical stages of
foundation, placement and assembly of components and final completion and
tests, as directed by the City Engineer.
B. The City shall be notified not less than three (3) working days before construction
is started. The applicant is responsible for scheduling a pre-construction conference
with the City. Other jurisdictions, the applicant’s engineer, the applicant’s contractor,
utility companies, subcontractors and other necessary parties to the project shall be
present at the preconstruction conference.
C. The applicant or the applicant’s engineer shall notify the City Engineer’s office at
least one working day in advance of the beginning of each required inspection. Failure
to comply with inspection requirements may necessitate appropriate or additional
testing and certification as directed by the City Engineer. Costs of such testing and
certification shall be borne by the contractor, and for subdivision streets, it shall be the
developer. At the time that such action is directed by the City Engineer, no further work
will be permitted on the street or subdivision until all tests have been completed and all
corrections have been made to the satisfaction of the City Engineer.
D. If the contractor believes that the inspection sequence indicated above does not
fit the requirements of a particular project, he/she should make a request to the City
Engineer in sufficient time to permit revision to the inspection schedule.
12.56.060 Materials Sampling and Testing
Materials sampling and testing shall be at the frequency and magnitude as set forth in
the WSDOT Construction Manual. In the case of plat streets, testing and sampling shall
be performed by a private testing laboratory. Certified test reports shall be furnished for
all tests performed by private testing laboratories.
12.56.070 Traffic Control
A. The applicant or their contractor shall provide, place and maintain all Washington
certified flaggers, flagger protective apparel, barricades, lights, standard signs, cones
Ordinance 2010-09 (PC Draft 2010_0601)
Exhibit B
Page 55 of 81
and other devices, equipment, and personnel necessary for the protection of the public
and maintenance of traffic through the limits of the project at the applicant’s expense. If
the City finds an unsafe condition, the applicant, contractor, and applicant’s engineer, if
warranted, shall be notified and shall be required to correct the situation immediately. In
some circumstances involving an immediate hazard to public safety, the City may make
the appropriate corrections. The applicant shall be responsible for all costs incurred by
the City.
B. In addition to the requirements contained in the Standard Specifications, the
following will be required:
1. The applicant shall maintain at least one-way traffic through the limits of
construction at all times and shall open the street to two-way traffic during periods when
actual work is not in progress.
2. Access to side streets and private driveways shall be maintained at all
times unless otherwise authorized by the City Engineer.
3. The applicant or his/her contractor shall coordinate with the US Postal
Service when construction requires mailboxes to be relocated or rearranged.
4. When it becomes necessary to restrict access to private driveways for
construction purposes, as approved by the City Engineer, the applicant shall inform
affected residents at least 24 hours in advance and minimize inconvenience to residents
of the area.
5. When temporary street closures cannot be avoided and is approved by
the City Engineer, the contractor shall post “To Be Closed (insert dates)” signs a
minimum of five days prior to the closing. The types and locations of the signs shall be
shown on a detour plan. A detour plan must be prepared and submitted to the City
Engineer at least ten working days in advance of the proposed closure, and be
approved prior to closing any City street. In addition, the contractor must notify, in
writing, local fire, school, law enforcement authorities, postal service and any other
affected persons as directed by the City Engineer at least five days prior to the closing.
6. If the construction of a proposed development is determined by the City
Engineer to require special routing of large trucks or heavy construction equipment to
prevent impacts to surrounding streets, residences or business, the contractor shall be
required to develop and use an approved haul route and enter into a haul street
agreement, to mitigate impacts identified during environmental review in accordance
with RCW 43.21C the State Environmental Policy Act, establishing restoration
procedures and work to be performed by the contractor upon completion of the haul
operation. When required, the haul route plan must be prepared and submitted to the
City Engineer and approved prior to beginning or continuing construction. The haul
route plan shall address routing, hours of operation, signing, flagging and daily
maintenance. If the contractor’s equipment or suppliers fail to use the designated haul
route, the City Engineer may prohibit or limit further work on the development until such
time as the requirements of the haul route are complied with.
Ordinance 2010-09 (PC Draft 2010_0601)
Exhibit B
Page 56 of 81
12.56.080 City Forces and City Contract Street Inspection
Street construction performed by City forces or by contract for the City will be inspected
under supervision of the City Engineer.
12.56.090 Utilities
A. Existing utilities must be protected from damage by the contractor.
B. Contractors shall utilize the One-Call Center service for the location of utilities a
minimum of 48 hours in advance of any construction.
C. The contractor shall obtain separate access or utility permits from the City before
undertaking any construction work within the existing City right-of-way adjacent to the
project. Restoration sureties may be required by the City Engineer in the manner
provided for in EWMC 12.50.110 of these Standards.
12.56.100 Posting of Site
For all new major subdivision work and planned developments, the applicant shall post
one or more signs showing the name of the subdivision or development, and the name
or business name of the applicant , the applicant’s engineer and the prime contractor
along with a contact telephone number for each. The signs shall show the names and
telephone numbers in suitably contrasting text not less than 2 inches in height. The
signs shall be placed at the access point(s) from the City street to the new development
and not more than 25 feet from the near edge of the City street.
12.56.110 Final Acceptance
Upon completion of all work, the applicant shall request acceptance by the East
Wenatchee Engineer. As part of the acceptance process, the City Engineer shall review
all documents including test reports, inspection certifications, daily diaries, and any
notes made by the City Engineer or his/her designee during all site visits. The City
Engineer, the applicant and the applicant’s engineer shall conduct an on-site review of
the project to ascertain the level of completeness of the project including cleanup. If the
City Engineer is satisfied that the project has been completed in conformance with the
approved plans, these Standards, and all other requirements that may have been
imposed by means of approved change orders, he/she shall provide the applicant with a
written acceptance.
Part 8 – Roadside Features
12.57.010 Retaining Walls
A. General Design Requirements
Retaining walls on public streets shall be designed and constructed to meet the
minimum requirements of the AASHTO Bridge Specifications. Retaining walls with a
height of four (4) feet or greater and all retaining walls with a surcharge shall be
designed by a registered civil engineer licensed in the State of Washington, and shall be
submitted by the applicant for approval by the City Engineer.
B. Segmental or modular Walls (Mortarless concrete block walls) and rockery walls
Ordinance 2010-09 (PC Draft 2010_0601)
Exhibit B
Page 57 of 81
Mortarless concrete block walls shall be designed and constructed in accordance with
the manufacturer’s design and construction recommendations. For all such walls the
manufacturer’s design details and recommendations shall be furnished to the City
Engineer for approval. Rockery walls shall be designed by a registered civil engineer
licensed in the State of Washington.
12.57.020 Side Slopes
A. Side slopes shall generally be constructed no steeper than 2 to 1 on both fill
slopes and cut slope, however, side slopes on private streets may be a steep as 1-3/4
to 1. Steeper slopes may be approved by the City Engineer upon showing that steeper
slopes, based on soils analysis, will be stable.
B. Side slopes shall be stabilized by grass sod, hydroseeding, or by planting or
surfacing materials acceptable to the City Engineer. Hydro seeding mix shall be
submitted to the City for approval prior to application. Certification of application rates
and methods shall be provided. A Maintenance Performance Bond shall be provide
until such time as the vegetation has been established to the satisfaction of the City.
C. Side slopes may also require flattening to accommodate utility placement.
D. Cut slopes may require terracing depending upon the total slope height and the
nature of the material being cut. Cut slopes higher than 15 feet will require a soils
analysis to determine if terracing will be required.
E. Side slopes and on-site grading shall comply with East Wenatchee Municipal
Code Grading and Excavation Standards.
12.57.030 Mailboxes
Mailbox type and location require approval of the Postal Service (USPS). Coordination
with the local postmaster, early in the project design process, is important.
Individual and cluster mailboxes shall:
A. Be approved by the USPS, and
B. Have break-away designed support unless located a minimum of 18 inches
behind a curb or located beyond the clear zone as set forth in EWMC 12.57.080, and
C. Be constructed in accordance with WSDOT Standard Plans, provided however,
that the vertical supports shall be located a minimum of two (2) feet back of the ditch
centerline on all ditch sections.
USPS requires installation of cluster box units (CBU) to serve four or more addresses.
Specific requirements can be obtained from the local postmaster.
Where USPS requires Neighborhood Delivery and Collection Box Units (NDCBU), they
shall be located as required by USPS.
Turnouts for mail delivery vehicles shall be installed to serve CBU’s and NDCBU’s
located along arterial or collector streets, or any street with a posted speed of 35 mph or
above.
Ordinance 2010-09 (PC Draft 2010_0601)
Exhibit B
Page 58 of 81
12.57.040 Survey Monuments
A. All existing survey control monuments which are disturbed, lost, or destroyed
during construction shall be replaced by a registered surveyor at the expense of the
developer. All permits to remove, destroy or replace monuments shall be filed with the
State Department of Natural Resources pursuant to Washington Administrative Code.
B. Any “aliquot corner” (section corner, quarter corner, etc.), as described in the
Public Land Survey System, shall be monumented per Washington State Statutes and
utilize the monumentation standard shown in Figure 8-2. If such a corner falls within
concrete or asphalt, a monument case and cover as shown in Figure 8-3 shall be
installed to protect and provide access to said corner.
C. Survey control monuments shall be placed or replaced in accordance with
recognized good practice of land surveying, and in conformance with all applicable state
and local regulations.
D. Survey monuments shall be placed at all exterior boundary corners of plats and
on all lot corners and shall consist of a one- inch galvanized pipe or one-half inch
reinforcing bar with identifying cap attached. Pipe or reinforcing bar must be a
minimum of two (2) feet in length.
E. Survey monuments are required at all street intersections, points of horizontal
curvature (PC’s), points of horizontal tangency (PT’s), centers of cul-de-sacs and other
appropriate locations as determined necessary by the City. Monuments at PC’s and
PT’s may be eliminated and replaced with a monument at the Point of Intersection (PI),
if the PI falls within the paved street surface. See Figure 8-1 for street survey
monuments. No monumentation is required for unpaved streets except at the
intersection with a paved street.
F. All paved street monumentation shall comply with Figures 8-1, 8-2 and 8-3 in
Part 11 of these Standards. All monuments shall be installed at the applicant’s
expense. A monument as required above shall be placed in paved streets at all points
of curves, points of tangent, intersections and as needed for inter-visibility and at the
intersection of street centerlines and at the center of cul-de-sacs within plat boundaries.
No monumentation is required for unpaved streets except at the intersection with a
paved street.
G. A signed and sealed statement from the applicant’s land surveyor that all
monuments and corners indicated on the subdivision plat have been set and are in
good condition will be required before a final approval of the street can be made.
H. Record of the monumentation shall be made in accordance with the Survey
Recording Act.
12.57.050 Barricades
Temporary and permanent barricades shall be installed by the applicant or their
contractor and shall conform to the standards described in Section 6C-8 of the Manual
on Uniform Traffic Control Devices (MUTCD) and these standards.
Ordinance 2010-09 (PC Draft 2010_0601)
Exhibit B
Page 59 of 81
A. Type I or Type II barricades may be used when traffic is maintained through the
area being constructed or reconstructed. They may be used singly or in groups to mark
a specific hazard or they may be used in a series for channelizing traffic.
B. Type III barricades may be used when streets and/or proposed future streets are
closed to traffic. Type III barricades may extend completely across a street and its
shoulder (as a fence) or from curb to curb. Where provision must be made for access of
equipment and authorized vehicles, the Type III barricades may be provided with
movable sections that can be closed when work is not in progress, or with indirect
openings that will discourage public entry. Where job site access is provided through
Type III barricades, the developer/contractor shall assure proper closure at the end of
each working day.
C. In the general case, Type III permanent barricades shall be installed to close
arterial streets or other through streets hazardous to traffic. They shall also be used to
close off lanes where tapers are not sufficiently delineated.
D. Type I barricades may be used at the end of a local access street terminating
abruptly without a cul-de-sac bulb. Each such barricade shall be used together with an
end-of-street marker.
E. Signs may be erected on barricades, particularly those of fixed type. The
STREET CLOSED and detour arrow signs, and the large arrow warning signs can be
mounted effectively on or above the barricade that closes the street.
F. For nighttime use, it is desirable to add flashing warning lights when barricades
are used singly and steady-burn lights when barricades are used in series for
channelization.
12.57.060 Bollards
When necessary to deny motor vehicle access to an easement, tract or trail, except for
maintenance or emergency vehicles, the point of access shall be closed by a line of
bollards. These shall include one or more fixed bollards on each side of the traveled
way and removable, locking bollards across the traveled way. Spacing shall provide one
bollard on centerline of the trail and the other bollards spaced at minimum of 50 inches
on center on trails 10 feet wide or less. Spacing of 60 inches on center on trails wider
than 10 feet. Bollard design shall be in accordance with WSDOT Standard Plans H-13
or H-13a or other design acceptable to the Engineer. No fire apparatus access streets
shall be blocked in this manner without concurrence of the Fire Marshall. Bollards shall
be located at least 10 feet laterally from the paved edge of street.
12.57.070 Guardrail
A. Evaluation of embankments for guardrail installations shall be in accordance with
Chapter 710 of the WSDOT Design Manual or the AASHTO Roadside Design Guide.
B. Guardrail installations shall conform to WSDOT Standard Plan, Beam Guardrail
Type 1 and Guardrail Placement. End anchors shall conform to WSDOT Standard Plan,
Beam Guardrail Anchor Type 1.
Ordinance 2010-09 (PC Draft 2010_0601)
Exhibit B
Page 60 of 81
12.57.080 Roadside Obstacles
A. WSDOT Clear Zone distances as described in Chapter 700 of the WSDOT
Design Manual, shall be used as a guide for evaluation and placement of roadside
features within the City right-of-way.
B. In general, existing or new roadside features which could present a hazard to the
public should be placed outside of clear zone areas unless justified to the City
Engineer’s satisfaction by suitable engineering studies considering traffic safety, or
where shielded by a barrier, placed in an area normally inaccessible to vehicles or
utilize a break-away design.
C. Locations of poles and other above-ground appurtances shall be compatible with
driveways, intersections and other street features (i.e., they shall not interfere with sight
distance, street signing, traffic signals, culverts, etc.). To the greatest extent possible,
installation of poles and other above ground appurtenances will not be permitted in
sidewalks or walkways.
D. Costs of relocating poles or obstacles to achieve these standards are the
responsibility of the developer. This is not intended to prevent the developer from
making financial arrangements with the appropriate utility or other owner of the obstacle
to accomplish removal of the pole or obstacle.
12.57.090 Medians
Where required for traffic control or landscape planters, medians shall be in addition to,
not part of the specified street width. Medians shall be designed so as not to limit
turning radii or sight distance at intersections. Median edges may be either standard
curb or shoulder and ditch. Medians with shoulder and ditch edges shall be a minimum
four (4) feet in width. Medians may be grassed, landscaped, or surfaced with aggregate
or pavement. Curbed medians shall require an additional two (2) feet of street width on
each side to accommodate vehicle shy distance.
12.57.100 Street Illumination
Street illumination is required, the following provisions shall apply:
A. Street lighting system designs are to be prepared by a licensed engineer
experienced with lighting design. Calculations should include illuminaire spacing,
illumination levels, line losses, power sources and other necessary details for the
electrical and physical installation of the street lighting system.
B. The following illumination levels shall be met based on the urban street
classification:
Urban Classification Horizontal Foot
Candles
Principal Arterials 1.5 FC
Minor and Collector Arterials 1.0 FC
Local Commercial/Industrial 1.0 FC
Local Access At intersections or
street ends
Ordinance 2010-09 (PC Draft 2010_0601)
Exhibit B
Page 61 of 81
C. Other Considerations
1. All street lights shall be on 240 volt, single phase systems. The exact location
of the power source should be indicated together with the remaining capacity of that
circuit. System continuity and extension should be considered.
2. Contractor cabinets equipped with electrical meters, time clocks, circuit
breakers, and other required components are required on commercial installations of
five or more street lights.
3. All street lighting, wiring, and service connectors shall be located
underground except in residential areas where existing power distribution poles exist.
4. Particular attention shall be given to locating luminaries near intersections, at
all street ends and at pedestrian, bicycle, and/or equestrian crossings.
5. Mounting height shall be a maximum of thirty (30) feet for all luminaries.
6. In lieu of a street light, at the end of the cul-de-sac, permanent driveway
pedestal lighting provided by all lots accessing the cul-de-sac may be substituted,
provided that it is noted on the face of the plat.
7. Street lighting shall meet the Douglas County PUD (DCPUD) standards for
non-metered lights. These standards include 150w, 200w, or 400w HPS fixtures, for
un-metered services. DCPUD shall take over ownership of un-metered lights and wires.
The applicant/developer shall be responsible for charges for connection of the street
lights to the transformer or hand hole. Refer to DCPUD Standard Details A-01 and A-
02.
12.57.110 Landscaping
Landscaping requirements including landscaping plans are contained in EWMC 17.72.
“Landscaping Standards”.
12.57.120 Street Permanent Signing and Pavement Markings
Unless otherwise approved by the City Engineer, the City shall install and be
reimbursed by the developer for the installation of all necessary street name signs,
warning signs and regulatory signs. The City will assume maintenance of all signs after
installation, except for signs on private streets. All signs must be installed prior to
issuance of any building permits and opening of streets for use. All signing shall be in
accordance with MUTCD.
The City shall install street striping and be reimbursed by the developer for such work
prior to final plat approval. Street striping, buttoning or other traffic delineators shall be
prior to opening the streets for use.
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Part 9 – Primitive Streets - Unopened City Right of Way
12.58.010 General
Primitive streets or unopened public street rights-of-way not developed to the minimum
design standard are not considered adequate for new construction and development
activities. These development activities shall require improvements to the design as
detailed herein and in previous sections. Costs will be borne by the applicant proposing
construction or development.
Throughout the City there may be unopened public street rights-of-way that have not
been maintained, improved or officially opened and established as City streets by the
City or vacated by the City. There may be persons wishing to utilize unopened City
right-of-way for access to private property.
12.58.020 Permits Required
A. A permit is required to improve City right-of-way for street purposes. A right of
way permit application, on forms provided by the City Engineer, shall be approved prior
to the improvement of a primitive street and or unopened right-of-way.
1. Right of Way Permit: A Right-of-Way permit shall be required for opening
or improving a public right-of-way. Improvements meeting the street standards as set
forth in EWMC 12.53 shall be constructed following the approval of the application and
plans by the City Engineer. Streets meeting the private street standards shall not be
eligible for designation as a City public street
2. Requirements
a. The street section shall meet the requirements for private streets as
set forth in EWMC 12.53. If more than 16 lots, parcels or tracts are to be served, the
street must be designed to public street standards. If the width of the unopened right-of
way and the terrain prevent the proposed street from meeting the public street
standards, the permit shall be denied.
b. If the street is to be proposed for establishment as a City street, the
applicant shall pay for the purchase and installation of all signing required by the City.
Subsequent to the installation and establishment as a City street, signing will be
maintained by the City.
c. The City Engineer shall review for approval plans of the required
improvements necessary for designation as a public street. Upon completion of
necessary improvement, the City Engineer shall indicate approval on the permit
application and make the appropriate notification to the City Council. The City Council
shall conduct a public hearing and declare the street established by resolution for public
purpose. Upon establishment by the City Council, they will enter the appropriate
information into the official City records.
d. The permit application shall include:
1. A legal description of the lot(s), tract(s) or parcel(s) to be
served by the permit.
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2. A statement regarding the purpose of access to subject
lot(s), tract(s) or parcel(s).
3. Proof of appropriate subdivision ordinance approval or, if
exempt from platting, an assessor’s map showing the parcels served.
4. If there is no official street name, three choices for street
name shall be submitted for approval at the time of permit application submittal.
5. Two sets of engineered street and drainage plans for the
planned improvements as per East Wenatchee Street Standards, including a vicinity
map.
B. Additional Requirements
1. Detailed engineering and drainage plans will be required by the City
Engineer. Cost for the development and preparation of such plans shall be borne by the
permit applicant. When required, such plans shall be prepared in accordance with the
requirements of these Standards.
2. The applicant shall cause the right-of-way to be surveyed by a licensed
land surveyor at the applicant’s expense to adequately define the limits of the unopened
right-of-way. Such survey shall be recorded in accordance with the Survey Recording
Act.
3. An applicant shall be required to deed additional right-of way across
property under his/her authority when necessary to fulfill the minimum street right of way
as required by these Standards.
4. An applicant shall provide certification that all owners of the property
abutting on each side of the unopened right-of-way have been provided written
notification of the permit application. Any objections of such property owners shall be
stated along with the manner in which the applicant proposed to resolve said objections.
5. Restoration sureties may be required by the City Engineer in the manner
provided for in EWMC 12.50.110 of these Standards.
Part 10 - TRAFFIC IMPACT ANALYSIS
12.59.010 Purpose.
It is the purpose of this chapter to outline the minimum content of a traffic impact
analysis. A traffic impact analysis responds to a wide variety of issues, varying with the
type of development, location of the proposed project, and existing traffic patterns.
There are a number of issues that are incorporated into a traffic impact analysis to
ensure an efficient and comprehensive review of the impacts associated with a
development proposal.
12.59.020 Applicability.
A. A traffic impact analysis shall be submitted with a development permit application
when it is determined by the city engineer that a development meets any of the
following:
1. Generates 20 peak hourly trips or 200 average daily trips;
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2. Significantly affects or exceeds the current or projected level of service of
the roadway system adjacent to the development; or
3. The proposal would affect existing traffic problems in the local area of the
project such as an area with a high accident ratio, confusing intersection, or other
problems identified by the city engineer; or
4. A traffic impact analysis may also be required by the city engineer when it
is determined that a development proposal may significantly impact adjacent areas.
B. Traffic impact analyses shall be prepared by a qualified engineer approved by
the city engineer.
12.59.030 Organization and content.
A traffic impact analysis shall contain the following information:
A. Introduction and Summary.
1. Purpose of report and study objectives;
2. Executive summary:
a. Site location and study area,
b. Development description,
c. Principal findings,
d. Conclusions,
e. Recommendations and proposed mitigation measures.
B. Proposed development and summary of the development proposal, including the
following:
1. Land use and intensity;
2. Location;
3. Site plan;
4. Zoning;
5. Phasing and timing.
C. Area conditions including the following:
1. Study area:
a. Area of influence;
b. Area of significant traffic impact.
2. Study area and land use:
a. Existing land uses;
b. Existing zoning;
c. Anticipated future development.
3. Site accessibility:
a. Existing and future area roadway system;
b. Traffic volumes and conditions;
c. Transit service;
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d. Existing relevant transportation system management programs;
e. Other issues as determined by the city engineer and director
D. Projected Traffic.
1. Site traffic for each horizon year:
a. Trip generation;
b. Trip distribution;
c. Modal split;
d. Trip assignment.
2. Through traffic (each horizon year):
a. Method of projection;
b. Non-site traffic in study area including the method of projections,
trip generation, trip distribution, modal split, and trip assignment;
c. Through traffic;
d. Estimated volumes.
3. Total traffic (each horizon year).
E. Traffic analysis including the following:
1. Site access;
2. Capacity and level of service;
3. Traffic safety;
4. Traffic signals;
5. Site circulation and parking.
F. Improvement Analysis.
1. Improvements to accommodate base traffic;
2. Additional improvements to accommodate site traffic;
3. Alternative improvements;
4. Status of improvements already funded, programmed, or planned;
5. Evaluation.
G. Findings.
1. Site accessibility;
2. Traffic impacts;
3. Need for any improvements and financing plan;
4. Compliance with applicable codes.
H. Recommendations and Proposed Mitigation.
1. Site access/circulation plan;
2. Roadway improvements including on-site, off-site and a phasing plan
when appropriate;
3. Transportation system management actions including off-site, on-site and
operational.
I. Conclusions.
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PART 11 –FIGURES
12.060.010 List of Figures
Figure 3-7a Urban Local Access Street Section, AADT Under 200
Figure 3-7b Urban Local Access Street Section, AADT 200 and Over
Figure 3-8 Urban Collector & Arterial Street Section
Figure 3-9 Cul-de-Sac Details
Figure 3-10 Underground Utility Locations – Curbed Street
Figure 3-11 Underground Utility Locations – Shouldered Street
Figure 3-12 Pavement Repair Section
Figure 4-1 Driveways and Access Easements
Figure 4-2 Access Easement Turnarounds
Figure 4-3 Access Easement
Figure 8-1 Survey Monument in Street
Figure 8-2 Survey Monument 2
Figure 8-3 Survey Monument 3
Figure DCPUD A-01 Light Standard Detail
Figure DCPUD A-02 Lighting System Service Entrance Disconnect
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Note: Change “Douglas County Engineer” to “East Wenatchee City Engineer”
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Note: Change “Douglas County Engineer” to “East Wenatchee City Engineer”
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