City of Happy Valley

ENGINEERING DIVISION

ENGINEERING DESIGN

AND

STANDARD DETAILS

MANUAL

Adopted: March 6, 2007

Revised: June 2019

Table of Contents

Introduction…………………………………………………………………………………………………………….. i

1. Purpose………………………………………………………………………………………………………… i

2. Adopted Standards and Reference Manuals…………………………………………………. i

3. Service Providers………………………………………………………………………………………….. i

Chapter 1 – Development Process

1. General………………………………………………………………………………………………………… 1

2. Preliminary Engineering……………………………………………………………………………….. 1

a. Pre-application Conference………………………………………………………………. 1

b. Providing for Future Development……………………………………………………. 1

c. Pavement Moratorium…………………………………………………………………….. 2

d. Utilities…………………………………………………………………………………………….. 2

3. Construction Plan Review…………………………………………………………………………….. 2

4. Construction Plan Review and Inspection Fees…………………………………………….. 3

5. Performance and Maintenance Guarantees.…………………………………………………. 3

6. Pre-construction Meeting…………………………………………………………………………….. 3

7. Project Acceptance………………………………………………………………………………………. 4

a. Submittals………………………………………………………………………………………… 4

b. Project Punchlist………………………………………………………………………………. 4

c. Building Permit Release Letter………………………………………………………….. 5

Chapter 2 – General Design Information

1. General………………………………………………………………………………………………………… 1

2. Construction Drawing Requirements……………………………………………………………. 1

a. Drawing Format……………………………………………………………………………….. 1

b. Plan Organization……………………………………………………………………………… 2

c. Plan View………………………………………………………………………………………….. 3

d. Profile View………………………………………………………………………………………. 6

e. Pathways………………………………………………………………………………………….. 7

f. Mt. Scott/Scouters Mountain (MSSM) Regional Trail……………………….. 7

g. Rectangular Rapid Flashing Beacons (RRFB)……………………………………… 7

h. Curb Returns…………………………………………………………………………………….. 7

i. Detention/Water Quality Pond Fencing……………………………………………. 7

3. Site Grading………………………………………………………………………………………………….. 8

a. Site Grading Plan………………………………………………………………………………. 8

b. Erosion and Sediment Control Plan…………………………………………………… 8

c. Cement-Amended Action Plan………………………………………………………….. 9

d. Tree Cutting and Preservation…………………………………………………………… 10

e. Geotechnical Report…………………………………………………………………………. 11

f. Native Vegetation Report…………………………………………………………………. 12

g. Retaining Walls…………………………………………………………………………………. 12

h. Lot Drainage Design………………………………………………………………………….. 13

4. Utility Installations……………………………………………………………………………………….. 13

5. Survey………………………………………………………………………………………………………….. 15

a. General…………………………………………………………………………………………….. 15

b. Plats………………………………………………………………………………………………….. 15

c. Existing Survey Monuments……………………………………………………………… 15

d. New Survey Monuments…………………………………………………………………… 16

e. New Survey Benchmarks………………………………………………………………….. 17

6. Easements……………………………………………………………………………………………………. 17

7. Permits…………………………………………………………………………………………………………. 17

a. Tree Removal Permit………………………………………………………………………… 17

b. Site Development Permit………………………………………………………………….. 17

c. Engineering Minor Grading and Retaining Wall Permit……………………… 18

d. Engineering Erosion Control Permit………………………………………………….. 18

e. Right-of-Way Permit…………………………………………………………………………. 18

f. NPDES 1200C Permit…………………………………………………………………………. 18

8. Pavement Moratoriums……………………………………………………………………………….. 18

Chapter 3 – Street Design

1. General Requirements………………………………………………………………………………….. 1

a. Functional Classification……………………………………………………………………. 1

b. Access Management…………………………………………………………………………. 1

c. Structural Pavement Sections…………………………………………………………… 2

d. Design Speed……………………………………………………………………………………. 2

e. Subsurface Drainage…………………………………………………………………………. 3

f. Guardrails.………………………………………………………………………………………… 3

2. Horizontal Street Alignment…………………………………………………………………………. 3

3. Vertical Street Alignment……………………………………………………………………………… 5

4. Intersections………………………………………………………………………………………………… 6

5. Cul-de-sacs, Eyebrows, Loop Turnarounds…………………………………………………… 8

6. Stub Streets, and Half Streets………………………..…………………………………………….. 9

7. Private Streets and Alleys.……………………………………………………………………………. 10

8. Raised Medians…………………………………………………………………………………………….. 11

9. Curb and Sidewalks………………………………………………………………………………………. 11

10. Driveways…………………………………………………………………………………………………….. 11

11. Typical Cross Sections……………………………………………………………………………………. 12

12. Planter Strip…………………………………………………………………………………………………. 12

13. Curb Returns/ADA Accessibility……………………………………………………………………. 13

14. Catch Basins…………………………………………………………………………………………………. 13

15. No Parking Zones………………………………………………………………………………………….. 13

Chapter 4 – Site Improvement Plans

1. General………………………………………………………………………………………………………… 1

2. Grading and Erosion Sediment Control…………………………………………………………. 1

3. Retaining Walls…………………………………………………………………………………………….. 1

4. Parking Areas……………………………………………………………………………………………….. 1

a. Parking Lot Layout…………………………………………………………………………….. 2

b. Heavy Pavement Section…………………………………………………………………… 2

c. Signage and Striping…………………………………………………………………………. 2

d. Lighting…………………………………………………………………………………………….. 3

5. ADA Standards……………………………………………………………………………………………… 3

a. Curb Ramps and Accessible Route…………………………………………………….. 3

b. ADA Parking Spaces………….………………………………………………………………. 3

6. Landscape Plan …………………………………………………………………………………………………. 3

Chapter 5 – Construction

1. Pre-Construction Meeting…………………………………………………………………………….. 1

2. Work Hours………………………………………………………………………………………………….. 1

3. Erosion and Sediment Control………………………………………………………………………. 2

4. Safety and Traffic Control Plan……………………………………………………………………… 3

5. Construction Inspection……………………………………………………………………………….. 4

a. City Inspection Activities……..……………………………………………………………. 4

b. Inspecting Engineer’s Activities………………………………………………………... 5

c. City Inspection Notification….…………………………………………………………... 8

d. Testing……………………………………………………………………………………………… 8

6. Site Grading…………………………………………………………………………………………………. 8

7. Revision Process………………………………………………………………………………………….. 9

8. Utility Installations……………………………………………………………………………………….. 9

9. Placement of Asphalt and Concrete……………………………………………………………… 9

10. Preservation, Restoration and Cleanup………………………………………………………… 10

11. Project Acceptance………………………………………………………………………………………. 10

Exhibit A – Engineering Services Agreement

Exhibit B – General Notes

Exhibit C – Engineering Plan Submittal Checklist

Exhibit D – Material Testing Requirements

Introduction Page i

Revised April 2019

INTRODUCTION

1. PURPOSE

TheCityofHappyValley’sEngineeringDesignManualhasbeendevelopedtoprovidea

uniformsetofstandardsandprocedurestoassisttheCityandprivateconsulting

engineersincoordinating,designingandconstructingpublicimprovementprojects.

Thesestandardsapplytoallimprovementswithintheexistingandproposedpublic

right‐of‐wayandeasements,toallimprovementsintendedformaintenancebytheCity,

andtoallotherimprovementsforwhichtheCityofHappyValleyMunicipalCode

requirestheapprovaloftheCityEngineer.Standardsforsitegrading,erosioncontrol,

pedestrianandbikefacilities,parkinglots,anddrivewayconstructiononprivate

propertyarealsocontainedinthismanualandreferencedintheMunicipalCode.

ChangesorcorrectionstotheEngineeringDesignManualwillbemadebytheCity

Engineerasneeded.

2. ADOPTEDSTANDARDSANDREFERENCEMANUALS

TheCityhasadoptedtheAPWA/ODOTOregonStandardSpecificationsforConstruction,

latestedition,theAASHTOAPolicyonGeometricDesignofHighwaysandStreets,latest

edition,andtheManualonUniformTrafficControlDevices(MUTCD),latesteditionfor

streetdesignandconstructionstandards.TheCityhasalsoadoptedClackamasCounty

WaterEnvironmentServices(WES)StormwaterManagementDesignStandardsand

SanitarySewerStandardsforthedesignandconstructionofthestormwaterfacilities

andsanitarysewersystems.Thesestandardswillbeusedinthedesignand

constructionofimprovementswithintheCityofHappyValley.

TheCity’sTransportationSystemPlan(TSP),latestedition,shallbeusedtoplanthe

transportationsystemdevelopmentinHappyValley.



3. SERVICEPROVIDERS

WES–WaterEnvironmentServices:SanitarySewerandStormSewerserviceprovider.

CCSD#5–ClackamasCountyServiceDistrict#5:StreetLightingserviceprovider.

CFD#1–ClackamasFireDistrict#1.

Introduction Page ii

Revised April 2019

DTD–ClackamasCountyDepartmentofTransportation&Development;manages

ClackamasCountyRoads

DEQ–OregonDepartmentofEnvironmentalQuality.

SunriseWaterAuthority‐DrinkingWaterserviceprovider.

ClackamasRiverWater‐DrinkingWaterserviceprovider.

Chapter1 Page1

RevisedApril2019

CHAPTER1

DEVELOPMENTPROCESS

1. GENERAL

Propertyowners,developersandothersproposingtodoanyworkonasitethat

willalterthesitetoasignificantdegree,willberequiredtoobtainallapplicable

landuseapprovalsandpermits.Noworkmaybeginonasitepriortotheapproval

ofconstructionplansandissuanceofappropriatepermitsfromallagencies

involved.Constructionplansshallbedesignedandstampedbyaprofessional

engineer,registeredintheStateofOregon,hereinafterreferredtoastheDesign

Engineer.

2. PRELIMINARYENGINEERING

Pre‐applicationConference

Atthestartofthedevelopmentprocess,thedevelopershallattendapre‐

applicationconferenceforalldevelopmentproposalsthatrequirelanduse

approvalsandformostcommercialbuildingimprovements.Thepurposeof

thepre‐applicationconferenceistohelptheapplicantthroughthelanduse

andpermitprocess.

ProvidingforFutureDevelopment

Allimprovementsshallbedesignedasalogicalpartofthedevelopmentof

thesurroundingarea.Stormsewersandsanitarysewersshallbesizedto

accommodatetheentiredrainagebasinwhichtheywillultimatelyserve.

Utilitiesandstreetimprovementswillbeextendedtotheboundariesofthe

developmentforfutureextensionstotheadjoiningareas.TheCityEngineer

mayrequireoversizingofutilitiestoaccommodatefuturegrowthoftheCity.

Whereexistingutilitylinesdonotadjointheproposeddevelopment,the

developerwillberequiredtoextendthelinestothedevelopmentas

necessary.Whereexistingroadwayimprovementsdonotextendtothe

proposeddevelopment,thedeveloperwillberequiredtoimprovethe

roadwaytothedevelopmentasnecessary.



Chapter1 Page2

RevisedApril2019

PavementMoratorium

ThereisamoratoriumonanyCitystreetthathasbeenrecentlypaved.No

streetcutswillbeallowedinanarterialorcollectorstreetthathasbeen

pavedorresurfacedwithinthepreviousfive(5)years,oranyotherstreetthat

hasbeenpavedorresurfacedwithinthepreviousthree(3)years.Exceptions

maybemadebytheCityEngineeronacasebycasebasis.Exceptionswill

requirespecialpavementsectionrestorationlimits,and/orgrindingand

repavingoftheentirestreetsection.



Utilities

Allutilityimprovementsassociatedwiththedevelopment,including

telephone,internet,electricalpowerandlighting,gas,andcableTV,shallbe

installedundergroundinthepublicutilityeasement,andshallmeetthe

currentstandardsoftheappropriateagencyaswellasCitystandards.See

Chapter2,Section4foradditionalinformation.



3. CONSTRUCTIONPLANREVIEW

SubmitelectronicconstructionplansinPDFformattotheEngineeringDivisionvia

emailatplans‐[email protected].ATransmittalMemoand

supportinginformation/documentation,suchastheengineer’sconstruction

estimate,geotechnicalengineeringreport,walldesignsandtrafficstudiesshallbe

submittedelectronicallyaswell.Planreviewprioritywillbegiventoplans

submittedforfinalreviewoverplanssubmittedforinitialorintermediatereview.

APlanReviewDepositisrequiredwiththefirstplansubmittal.

UponcompletionofthedetailedreviewbytheCity,asetofelectronic“redline”

planswillbereturnedtotheDesignEngineer.Morethanonereviewmaybe

required.AresponseletteraddressingalloftheCity’spreviousreviewcomments

shallbeincludedwitheachsubsequentconstructionplansubmittal.Afterthe

DesignEngineerhascompletedallrevisionsandobtainedthenecessarypermits

fromaffectedServiceProviders(ie,SunriseWaterAuthority,WaterEnvironment

Services,DEQ,ClackamasCountyDTD),threehalf‐sizesetsoffinalreviseddrawings

shallbesubmittedatthepreconstructionmeetingforsignedapproval.

Additionally,aCDcontainingscannedelectronicfilesofthefinalapprovedand

Chapter1 Page3

RevisedApril2019

signeddrawings(inPDF)shallbesubmittedtotheCitypriortocommencing

construction.

Thefinalplanreviewandapprovalisvalidforone(1)yearfromthedateofplan

reviewfeepaymentandsubmittaloftheSiteDevelopmentPermit.Extensionsto

thepermitcanbemadebyrequestingaoneyearextension.Approvalofthe

permitextensionmayrequireanewplanreviewifconditionshavechangedsince

theplanswereapproved.SeeChapter2,Section9formoreinformationaboutthe

permitsthatmustbeobtainedpriortobeginningconstruction.

CONSTRUCTIONPLANREVIEWANDINSPECTIONFEES

ConstructionPlanReviewandInspectionFeesarebasedupontheconstruction

valueoftheproject.APlanReviewDepositmustbesubmittedatthetimeofthe

firstplanreviewsubmittal.Planreviewsthatrequiremorethanfour(4)reviews

aresubjecttoadditionalplanreviewfeesbaseduponthehourlyrateofthestaff

person,orstaffpersons,reviewingtheplans.Themostrecentfeescheduleis

availableontheCity’swebsiteatwww.happyvalleyor.gov.

5. PERFORMANCEANDMAINTENANCEGUARANTEES

Priortoconstructionplanapproval,thedevelopershallsubmitafinancial

guaranteefortheimprovementsasrequiredinSection16.50.080oftheCity’s

MunicipalCode.Uponsatisfactorycompletionoftherequiredpublic

improvements,atwo‐year25%maintenanceguaranteeshallbesubmitted.

PRE‐CONSTRUCTIONMEETING

TheconstructionplanswillbeapprovedbytheCityandWaterEnvironment

Servicesattheprojectpre‐constructionmeeting.Thedeveloper’sDesignEngineer

isresponsibleforarrangingthepre‐constructionmeetingbetweenprincipal

representativesoftheengineer,contractor,developer,City,andWater

EnvironmentServicesintheCityoffices.

TheConstructionPlanReviewandInspectionFees,financialguaranteeanda

CertificateofInsurancenamingtheCityasadditionalinsuredshallbesubmittedat

orpriortothepre‐constructionmeeting.

Chapter1 Page4

RevisedApril2019

7. PROJECTACCEPTANCE

Submittals

Followingcompletionofconstructionandpriortofinalinspectionofa

completedproject,theDesignEngineershallsubmitacompletesetof

electronicas‐built(record)drawingsforreview,includingfranchiseutilities.

Submitelectronicas‐builtconstructionplansinPDFformattotheEngineering

Divisionviaemailatplans‐[email protected].As‐built

drawingsshallcontainandreflectalldesignmodificationsincorporatedinto

thecompletedprojectandallrevisionstothepreviouslyapproved

constructionplans.Theas‐builtplansshallincludealleasementsshownon

thefinalrecordedplat.



Oncetheas‐builtplanshavebeenreviewedandacceptedbytheCityand

WaterEnvironmentServices,onecompletePDFdocumentshallbesubmitted.

Eachsheetoftheas‐builtdrawingsshallbestamped“As‐Built”,andshallbe

datedandsignedbytheDesignEngineer.



Ifspecialistswererequiredinthedesignoftheproject(geotechnical

engineer,structuralengineer,surveyor,arborist,wetlandscientist,etc.)then

acertificateofcompletionletterfromthoseindividualsshallberequired

relatingtotheirspecialty.



Individuallotas‐builtdrawingsshallalsobesubmittedelectronicallyat

projectcloseout.Eachindividuallotas‐builtshallincludethefollowing:

‐ alleasementrestrictionsonthelot

‐ sanitarysewerlateralwithpipesize,twotiestotheendofthe

lateral,pipedepthandlength

‐ stormsewerlateralwithtwotiestotheendofthelateral,pipedepth

andlength

ProjectPunchlist

Apunchlistwillbepreparedfortheprojectoutliningtheitemsthatneedto

becompletedpriortoprojectacceptanceandsubmittalofbuildingpermits.

Chapter1 Page5

RevisedApril2019

Thepunchlistwillincludefielditems,as‐builtplanreviewitems,bonding

requirementsandapprovalsfromtheCity’sServiceProviders.



BuildingPermitReleaseLetter

ABuildingPermitReleaseLetterisissuedwhenthepublicimprovementsfora

developmenthavebeencompletedandtheprojecthasbeenacceptedbythe

City.BuilderscansubmitforbuildingpermitsoncetheBuildingPermit

ReleaseLetterhasbeensignedbyCityandWaterEnvironmentServicesstaff.

Chapter 2 Page 1

Revised April 2019

CHAPTER 2

GENERAL DESIGN INFORMATION

GENERAL

Review of the public and/or private site improvement plans is initiated by the submittal

of construction plans that are at least 95% complete. Improvement plans shall be

designed and stamped by a professional engineer, registered in the State of Oregon,

herein after referred to as the Design Engineer.

Submit electronic construction plans in PDF format to the Engineering Division via email

at plans-[email protected]

. A Transmittal Memo and supporting

information/documentation, such as the engineer’s cost estimate, geotechnical

engineering report, wall designs and traffic studies shall be submitted electronically as

well. Plan review priority will be given to plans submitted for final review over plans

submitted for initial or intermediate review. A Plan Review Deposit is required with the

first plan submittal.

Upon completion of the detailed review by the City, a set of electronic “redline” plans

will be returned to the Design Engineer. More than one review may be required. A

response letter addressing all of the City’s previous review comments shall be included

with each subsequent construction plan submittal.

CONSTRUCTION DRAWING REQUIREMENTS

Drawing Format

i. Plans shall be submitted on 22” x 34” (ANSI D) or 24” x 36” sheets (ARCH D).

ii. A vicinity map is to be located on the first sheet of all plans and shall show

the location of the project with respect to the nearest major street

intersection.

iii. A north arrow shall be shown on each plan view sheet and adjacent to any

other drawing which is not oriented the same as other drawings on the

sheet. The orientation of the north arrow is up or to the right on the plan

sheet, with stationing from left to right.

Chapter 2 Page 2

Revised April 2019

iv. The scale shall be 1”= 2’, 4’, 5’ or 10’ vertically and 1”= 10’, 20’, 30’, 40’ or 50’

horizontally for all drawings except structural drawings. The scale of

corresponding sheets shall be the same.

v. Letter size shall not be smaller than 0.10 of an inch high.

vi. All detail drawings, including standard drawings, shall be included in the

drawings.

vii. The City’s standard General Notes shall be included in the Construction Notes

for each project. See Exhibit B.

viii. A note about the required Construction Hours Notice Sign shall be included in

the Construction Notes for each project. See the City’s Standard Drawing

350 for more information.

ix. The location and elevation of a National Geodetic Survey, United States

Geological Survey, Clackamas County or City of Happy Valley benchmark shall

be noted on the Title Sheet. Temporary benchmarks shall be shown or

referenced on the plans.

x. A title block shall appear on each sheet of the plan set and shall be placed

across the bottom edge of the sheet, or across the right-hand edge of the

sheet. The title block shall include the name of the project, the City land use

file number, the Developer/Applicant’s name, the engineering firm, the sheet

title and number.

xi. The seal of the Registered Professional Engineer responsible for preparation

of the plans shall appear on each sheet.

xii. The seal of the Registered Landscape Architect responsible for the

preparation of the landscape plans shall appear on each applicable sheet.

Plan Organization

The following plan sheets shall be included in the Construction Drawings:

i. Title Sheet - include the project name in large letters across the top of the

sheet, vicinity map, General Notes, notice to excavators for One Call Utility

Locates, sheet legend/index, and space for the City approval stamp (3”x5) in

the lower right quadrant.

ii. Existing Conditions Plan – include 2-foot contours, utilities, structures,

natural resource sensitive areas and all other affected features.

Chapter 2 Page 3

Revised April 2019

iii. Composite Utility Plan - include existing public and private utilities, proposed

public and private utilities, and proposed public improvements.

iv. Sanitary Sewer, Storm Sewer and Water Plan and Profile - show existing and

proposed finished contours, and include all piping, structures and

appurtenances as required by Water Environment Services, Sunrise Water

Authority and Clackamas River Water District.

v. Street Plan and Profile – Provide a stand-alone street plan and profile, not

combined with any other utility. Show existing and proposed finished

contours. Street lighting, signing and striping plans shall be on a separate

sheet to provide clarity.

vi. Grading and Erosion Control Plan - use minimum 2-foot contour intervals.

See Section 3 in this chapter for additional requirements.

vii. Tree Removal Plan - include all plan elements required by the Tree Removal

Permit application.

viii. Landscape Plan – a street tree and planter strip landscape plan shall be

included in the construction plan set in accordance with Municipal Code

Section 16.42.040. All landscape plans shall include public utility easements,

other easements, sight vision zones, sidewalks, bike and/or pedestrian

pathways, entry monuments or signage, retaining walls, irrigation,

underground utilities, street signs and street lights along all existing and

proposed street frontages.

ix. Signage and Striping Plan – provide a signage and striping plan for review,

prepared by a professional engineer registered in the State of Oregon.

x. City Standard Drawings - shall be full size.

xi. Fire and Life Safety Plan – provide a fire and life safety plan that includes

street widths, street slopes, turning radii at emergency vehicle routes,

emergency access locations and fire sprinkler requirements for lots.

Plan View

Plan views shall show the following within the site and for a minimum of 200 feet

around the perimeter of the site unless specified otherwise:

i. Right-of-way, property, tract, and easement lines (existing and proposed) and

their respective identifiers, and existing and proposed utility lines within

them, all on the same drawing.

Chapter 2 Page 4

Revised April 2019

ii. Subdivision name, lot numbers, street names, and other identifying labels.

Subdivision and street names are subject to the approval of the City Planning

Division, Fire Marshal’s Office, and the County Surveyor.

iii. Location and stationing of existing and proposed street center lines and curb

faces.

iv. Horizontal alignment and curve data of proposed street center lines and curb

returns.

v. Existing aboveground and underground utility facilities and vegetation within

the construction limits. For additional information required on Site Grading

Plan, see Chapter 2, Section 4.

vi. Location of existing buildings, wells, septic tanks, drain fields, fuel tanks, and

any other buried structures. An ALTA survey shall be required for at least 100

feet surrounding any of the above items to remain. Historical buildings shall

be identified as such on the drawings.

vii. All other affected, adjacent and existing off-site areas and features that are

within a distance of 200 feet outside the site boundary, including but not

limited to:

- Off-site features that, in the Design Engineer’s best judgment, will be

within the zone where the construction activities have the potential to

impact or potentially compromise the off-site feature. Such

construction activities include, but are not limited to; grading,

excavation, fill construction, trenching, stockpiling, pile driving, blasting

(blasting requires a special permit), ground shaking from construction

vehicles or equipment, and structural loading. Off-site features

include, but are not limited to; vegetation, landscaping and trees,

buildings, fences, decks, walls, slabs and pavements.

- Trees of any type that are 6-inches diameter at breast height (DBH) or

more, and whose root zones extend into the site using the trees’

canopy as the delineator of the root zone, or are within 10 or less of

the site boundary.

- Natural Resource Sensitive areas.

- Other features or areas designated by the City Engineer for evaluation.

- Tax lot information for subject site and adjacent properties including;

tax lot number, lot area, and Township, Range and Section Numbers.

Chapter 2 Page 5

Revised April 2019

viii. Location, stationing and size of all proposed mains and service lines for storm

drainage, sanitary sewer, and water. Stationing shall be located in

relationship to the street stationing at all manholes or other key locations.

ix. Match lines with stationing and sheet number references.

x. Street centerline stationing to be noted at a minimum of 100 foot intervals

and “tic” marks at 50 foot intervals.

xi. Top of curb elevations along curb returns at quarter-deltas, and at 100 foot

stations.

xii. Location of the low points of street grades and curb returns, and the

locations of catch basins and street inlets.

xiii. Sidewalk dimensions and locations and sidewalk ramp dimensions and

elevations. This shall include spot elevation at breaks in grade on ramps,

locations by street stationing of transitions in locations or width, and

dimensions and street stationing for driveways.

xiv. Crown lines along portions of streets, transitioning from one typical section

to another.

xv. Center line stationing of all intersecting streets.

xvi. Location and description of existing survey monuments, including but not

limited to section corners, quarter section corners, donation land claims

corners, and Clackamas County bench marks.

xvii. Location of proposed street intersection monument boxes and other

required surveying monuments shown on the plat.

xviii. FEMA designated 100-year flood plains and flood ways, or areas of flooding

during a 100-year storm event, wetland buffers and natural resource areas.

xix. Existing and proposed wetland areas, wetland mitigation areas, and storm

water quality undisturbed corridors (buffer strips), drainage ways and swales.

xx. Legend showing line types and symbols used.

xxi. Any additional information that the City, Water Environment Services (WES),

Clackamas County Department of Transportation and Development (DTD),

Clackamas County Service District #1 (Street Lighting), Clackamas County Fire

District #1, Sunrise Water Authority, or Clackamas River Water deem

necessary.

Chapter 2 Page 6

Revised April 2019

Profile View

Profile views shall show the following:

i. Orient the profile view in the same direction as the plan view. The profile

shall be on the same plan sheet as the plan view and shall be located directly

below the associated plan view.

ii. Stationing, elevations, vertical curve data (including curve k factors), and

slopes for center of streets or gutterline. For off-set or super-elevation cross-

sections, both curbs shall be profiled. Where curbs are not to be constructed,

centerline of street and ditch inverts shall be shown.

iii. Original ground along the centerline, and if necessary, at the edges of the

right-of-way if grade differences are significant.

iv. Centerline, top of curb, and gutter flow lines of existing streets for a distance

of at least 200 feet each way at intersections with proposed streets. For stub

streets that may be extended in the future, the vertical alignment shall be

designed for at least 200 feet beyond the scope of the proposed

construction. At the discretion of the City Engineer, additional design

information concerning the vertical and horizontal alignment of future street

extensions may be required.

v. The gutterline for all cul-de-sacs, eyebrows and reflecting quarter deltas, low

and high points, vertical curve data, and extending 50 feet beyond the PC and

PT.

vi. All proposed drainage facilities, all invert and top elevations, slopes,

materials, bedding, and backfill.

vii. Existing drainage facilities, including off-site facilities, upstream and

downstream that affect the design (i.e., downstream restrictions that back

water on to project site). Base flood elevations shall be shown on the profile,

if applicable.

viii. Profiles for ditch and creek flowlines shall extend a minimum of 200 feet

beyond the project, both upstream and downstream. Typical cross sections

at 50-foot intervals shall also be submitted.

ix. Profiles for existing and proposed storm, sanitary, and water mains.

x. All existing and proposed sanitary, water, storm lines and other utilities

crossing the profile.

Chapter 2 Page 7

Revised April 2019

Pathways

A separate plan and profile view shall be provided for each pedestrian pathway or

multi-use trail. Pedestrian pathways and multi-use trails shall be hard surface,

unless they are in a Natural Resource Area. Pedestrian pathways and multi-use

trails shall be designed in accordance with the City’s Trail Development Handbook

and City’s Standard Drawing 400.

Mt. Scott/Scouters Mountain (MSSM) Regional Trail

The Mount Scott/Scouters Mountain (MSSM) Trail Loop is planned to be a non-

motorized, multi-use trail system that will link numerous schools, parks, local trails

and businesses in the Clackamas County, Happy Valley and southern Portland area.

A link to the final trail alignment can be found on the City’s website. Due to

topographic constraints, achieving ADA accessibility throughout the system may

not be feasible in many locations. The multi-use trail within the City of Happy

Valley shall be hard-surfaced, 10’-12’ wide, and designed in accordance with City’s

Standard Drawing 400. Bridges shall be 8’ wide and designed by a professional

engineer registered in the State of Oregon.

Rectangular Rapid Flashing Beacons (RRFB)

Rectangular Rapid Flashing Beacons (RRFB) shall be supplied by Traffic & Parking

Control Co., Inc. (TAPCO) or other approved equal.

Curb Returns

Each curb return shall be individually designed and shall include a profile and plan

view. See Chapter 3, Section 13 for more information.

Detention/Water Quality Pond Fencing

Fencing around stormwater detention facilities shall be six-foot tall, black, vinyl-

coated chain link or the most current requirement of Clackamas County Service

District No. 1, per Municipal Code Section 16.42.060.C.10. Underground detention

pipe systems are not allowed in the public right-of-way.

Chapter 2 Page 8

Revised April 2019

SITE GRADING

Site Grading Plan

A Site Grading Plan is required for any project that involves moving 1000 cubic

yards or more of material. Existing and proposed grading contours shall be shown

at a minimum of 2-foot intervals and shall extend a minimum of 200 feet off-site.

The grading plan shall be prepared from recent ground surveys and shall show all

existing and proposed surface drainage conveyances, natural resource sensitive

areas, storm drainage collection structures, and all storm drainage outfalls. The

grading plan shall note the source of the survey information, date of the field work,

and the location of the original survey documents.

The limits of the proposed grading shall be clearly delineated on the grading plan.

The grading plan shall require the installation of orange construction fencing at the

grading limits. The grading plan shall be designed in conformance with the

Municipal Code Section 16.42.050 – Tree cutting and preservation.

Setbacks from the development property line for the top of a cut slope or the toe

of a fill slope shall be in accordance with Municipal Code Section 15.12.100 -

Setbacks. Terracing for cut or fill slopes shall be in accordance with Municipal Code

Section 15.12.110 – Drainage and terracing. Grading plans for areas where grading

will be within 10 feet or less of the development property line shall include cross

sections every 50 feet as necessary, with a minimum of three cross sections. These

cross sections shall extend a minimum of 50 feet each side of the property line and

shall show proposed and existing grades, structures and utility facilities.

Erosion and Sediment Control Plan

An Erosion and Sediment Control (ESC) Plan is required for all projects that require

a Site Grading Plan. The ESC Plan shall have all information noted in the previous

section for the Site Grading Plan, as well as ESC measures for all necessary phases

of construction. The City of Happy Valley has adopted the use of the latest Erosion

Prevention and Sediment Control Manual from Clackamas County, Water

Environment Services (WES) for assistance in determining the best management

practices (BMP’s) for the site.

Chapter 2 Page 9

Revised April 2019

The goal of the ESC Plan is to keep all sediment on the site. Preserving the natural

vegetation as an erosion control method in addition to other BMP’s is encouraged.

Vegetated cover shall be maintained on slopes and/or reinforced through new

plantings for stability and erosion control purposes. Vegetation shall not be

stripped from any area outside of the grading limits.

Note: Experience has shown that once the fine clayey soils in the Happy Valley

area become waterborne, they are not easily separated from water. Mechanical

systems, such as Baker Tanks, are the most effective means of filtration for these

soil types.

The ESC Plan shall include all construction drawing information required by the

Oregon Department of Environmental Quality (DEQ) NPDES 1200C permit. A site-

specific drainage plan for the temporary collection and treatment of surface water

and ground water during the construction phase shall be included in the ESC plan.

Cement-Amended Action Plan

When a contractor or developer requests to use Cement-Treated Base (CTB) or

Cement-Amended Soils on a project, they will be required to provide the City with

a stormwater monitoring action plan for City review. If the Cement-Amending is

proposed for use, the project geotechnical engineer shall be on site while the work

is underway; inspecting the work and providing recommendations for the amount

and depth of the cement or lime amendment.

Stormwater run-off over areas where Cement-Amending has recently been placed

is much more likely to have increased pH levels, which poses an environmental risk

to the surrounding ecosystems. To alleviate these concerns, the City of Happy

Valley is requiring that an action plan be developed and appropriate erosion and

sediment control (ESC) Best Management Practices (BMPs) implemented prior to

Cement-Amending on-site.

The action plan shall show how the permittee will ensure that stormwater

discharge does not impact the adjacent environment. Off-site stormwater

discharge must meet the following Water Quality standards:

• Turbidity: Below 10% above background turbidity, per DEQ

• pH: Between 6.5 and 8.5

Chapter 2 Page 10

Revised April 2019

Testing for these parameters must occur at minimum once a day during active

stormwater discharge from the site until such time as the Cement-Amending has

cured. All testing records and results shall be submitted to the City of Happy Valley

on a weekly basis.

The submitted Action Plan shall have the following components:

i. Sequencing Plan showing the approximate date(s) each area of the site will

be cement-treated. This can be either in Excel format or visually represented

on the site plan.

ii. Flow Control Plan demonstrating the flow path of run-off from Cement-

Amended areas.

iii. Testing Plan to test collected storm water run-off from Cement-Amended

areas, including testing schedule and testing location(s).

iv. Treatment Schedule to treat collected storm water run-off from Cement-

Amended areas that do not meet the above Water Quality standards.

v. Discharge Plan

a. Plan to dispose of storm run-off not meeting Water Quality standards,

b. Plan to discharge storm run-off meeting Water Quality standards post-

treatment.

The action plan must be submitted for review and approval prior to using Cement-

Amendments onsite. Failure to notify the City prior to Cement-Amending will be

considered a violation of the City’s permits and could result in Enforcement Action

being taken.

Record the location of Cement-Amended Base or Cement-Amended Soils within

the project. These locations shall be included in the project As-built Construction

Plans.

Tree Cutting and Preservation

Provide a Tree Removal and Protection Plan in accordance with Municipal Code

Section 16.42.050 – Tree cutting and preservation. The purpose of this code is to

regulate the removal and preservation of trees, to protect trees as a natural

resource of the City, and to allow the prudent management of trees by individual

Chapter 2 Page 11

Revised April 2019

property owners and developers. A Type B Application is required when trees are

to be removed in conjunction with a subdivision, PUD, land partition or

nonresidential construction project.

Attention is called to the tree survey requirements noted in Municipal Code

Subsection 16.42.050.D.2.a. The tree survey is to be prepared by a certified

arborist, or other qualified landscape specialist as approved by the City. The tree

survey shall describe the size, species, health and condition of the trees on-site and

shall include a map that locates trees on the property. Drainageways, wetlands

and surface water features shall also be identified on the map. Tree removal in

conjunction with a subdivision, PUD, land partition or nonresidential construction

project is not allowed in open space tracts as noted in Municipal Code Subsection

16.42.050.E.2.a.

The Tree Removal and Protection Plan shall identify each tree to be removed,

protective fencing around trees or vegetation to be protected, and shall map

proposed mitigation and erosion control measures. The plan shall also include the

existing and proposed grades on the site.

Tree removal will need to comply with the Migratory Bird Treaty Act (MBTA). A

pre-construction migratory bird nest survey will need to be completed prior to tree

removal that will occur within the nesting season (February 1

through July 31

The survey is intended to avoid occupied migratory bird nest destruction. The

MBTA protects occupied migratory bird nests (with birds or eggs) from being

destroyed.

Geotechnical Report

Many development sites in Happy Valley are on slopes, therefore a Geotechnical

Report by a licensed registered engineer shall be included with the initial submittal

of the construction plans. The Geotechnical Report shall include and make

recommendations on the following items:

i. Statement of understanding about the site development proposal.

ii. Site Preparation – clearing of vegetation and organic debris, removal of

existing subsurface structures, depth of over-excavation, and critical points

where inspection by the geotechnical engineer is required.

Chapter 2 Page 12

Revised April 2019

iii. Engineered Fills, Grading and Slope Steepness– preparation of existing

ground prior to placing fill, benching and fill slope keyway requirements, sub-

drain installations, compaction requirements for engineered fills, suitable fill

materials, lift thickness, moisture content, finish fill and cut slope steepness,

finishing of slope face, placement of topsoil on slopes, frequency of

inspection and testing by the geotechnical engineer.

iv. Wet Weather Earthwork – imported fill materials for work in wet weather,

on-site treatment of existing soils for use in fill construction, limiting work

areas during wet weather, sealing ground surface to limit moisture exposure,

and frequency of observation of excavation and fill placement by

geotechnical engineer.

v. Excavating Conditions and Utility Trenches – shoring or side slope needs for

excavations, backfill lift thicknesses, and frequency of inspection and testing

by the geotechnical engineer.

vi. Erosion Control Considerations – observation of soil types and their erosion

potential, recommended methods to minimize erosion during construction.

vii. Foundations recommendations for specific lots, groundwater

recommendations for specific lots, footing and wall drain recommendations,

and seismic design recommendations.

Native Vegetation Report

A Native Vegetation Report may be required in areas where existing vegetation is

proposed to be removed by development. The report shall be prepared in

accordance with Municipal Code Subsection 16.42.070.B.2.c.

Retaining Walls

Retaining walls greater than four feet in height shall have a professional engineer

or geotechnical engineer registered in the State of Oregon provide stamped design

calculations and detail drawings required for the retaining wall construction.

Municipal Code Section 16.42.60.C.6 notes that wall height shall be measured from

the “lowest adjoining finished grade” to the top of the wall.

The wall design shall take into consideration the proposed grading in front of the

wall, the proposed slope behind the wall, the wall drainage system, and the

required setbacks for any proposed structures near the wall.

Chapter 2 Page 13

Revised April 2019

Retaining wall detail drawings shall be provided in the construction plan set and

shall include at a minimum; wall profile, the degree of wall batter, wall cross

section at the highest point of the wall, wall reinforcing geotextile requirements,

wall drainage systems, and wall backfill requirements.

Refer to Municipal Code Sections 16.42.060.D and 16.50.100 regarding retaining

wall design requirements, setbacks, screening and terracing. When a retaining wall

crosses multiple lots, a wall easement or maintenance agreement recorded against

the impacted lots will be required. Retaining wall maintenance is the responsibility

of the Home Owners Association (HOA).

Fences may be required on walls 30” or higher. Fencing shall be black, vinyl-coated

chain link or stained cedar.

Lot Drainage Design

Weep holes through the curb are not allowed in the City of Happy Valley.

For those lots that are located on the downhill side of the street, care must be

taken with the design of the storm sewer system. If the roof and foundation drain

for the proposed structure cannot be taken by gravity to the storm sewer system in

the street, an additional storm system shall be placed at the rear of the lots to

catch this storm water. The storm system at the back of the lots shall be placed in

an easement in accordance with Water Environment Services requirements.

It may be necessary to install french drains along the development boundaries to

protect the downhill properties from surface water impacts caused by the

development improvements.

UTILITY INSTALLATIONS

a. All public utilities associated with or adjacent to a subdivision, PUD, multi-family,

land partition, road improvement or nonresidential construction project, shall be

placed underground. Franchise utility construction is included in the Right-of-

Way Permit for these projects. The Owner, or the Owner’s representative, is

responsible for coordinating with the individual utilities and for constructing

improvements per the approved construction plans.

Chapter 2 Page 14

Revised April 2019

b. Utility lines, vaults and pedestals shall be placed in the 8’ Public Utility Easement

(PUE) behind the right-of-way and shall be joint trench whenever possible. An

approved right-of-way permit is required for all installations.

c. On all phased (interim) road improvements, the necessary utilities shall be

stubbed across the interim improvement to assure street cuts are not necessary

when the road is expanded to its full width.

d. Underground utilities being constructed along existing paved streets shall not be

located under the existing pavement unless approved by the City Engineer.

e. The minimum depth of utilities on improved roads shall be thirty (30) inches as

measured from finished grade to top of utility. On unimproved roads, the

minimum depth shall be forty (40) inches.

f. Service crossings shall maintain the same depth as the main pipeline or buried

cable to a point two feet behind the curb or center of the road or ditch. In no

case shall there be less than one foot of cover from the bottom of the curb or

ditch to the top of the service line.

g. Utility maintenance work or new facility installations that will be installed under

the pavement in existing rights-of-way must be bored rather than open cut.

Utility vaults shall be placed outside of the pavement limits.

h. Street crossings shall be installed at a 90-degree angle to the public right-of-way.

i. Any bore pits that are required in the pavement for connection purposes must be

T-cut in accordance with the City’s Standard Drawing 200.

j. All excavations within the public right-of-way shall be backfilled with crushed

rock in accordance with the City’s Standard Drawing 205, with the exception of

excavations in collector or arterial facilities, which shall be backfilled with Control

Density Fill (CDF) in accordance with the City’s Standard Drawing 210.

k. Temporary trench patches shall be made using hot mix asphalt.

l. Steel plates will not be allowed to cover excavations in the traveled way during

the months of January through April, November and December. All excavations

during these restricted months shall be backfilled and patched temporarily with

hot mix asphalt until the final pavement restoration occurs.

Chapter 2 Page 15

Revised April 2019

m. The extent of the pavement repair shall be determined by the City Engineer on a

case by case basis. For example, if the utility excavation is within 3 feet of the

existing edge of pavement or within 5 feet of an existing trench patch, the

pavement removal and replacement will need to be extended to include these

areas. Adjacent areas of existing pavement distress will also need to be removed

and replaced as determined by the City Engineer.

n. If utility work requires the removal of an existing sidewalk or driveway, the

affected concrete panels will need to be replaced in their entirety.

o. Utility work is not allowed on weekends. In the event of an emergency, a testing

firm must be present during backfilling operations to confirm that compaction of

the backfill was performed in accordance with City specifications.

SURVEY

General

This Manual, Section 105 of the APWA specifications and ORS 209.140-150, define

the requirements for protection of existing survey monuments during any

construction and setting new survey monuments following construction.

Plats

The City Engineer will not approve or sign any partition, subdivision or planned unit

development (PUD) plat until the necessary public infrastructure to serve the

proposed and affected existing lots has been installed. If 80% of the required

public improvements are complete, and the developer has provided an acceptable

performance guarantee to the City for 125% of the value of the incomplete work in

accordance with Municipal Code Section 16.63.080.B.2, the plat may be signed, but

building permits will not be issued until the public infrastructure has been installed

and accepted by the City.

Existing Survey Monuments

Whenever an existing section corner, one quarter section corner, or donation land

claim corner monument or accessory appears to be in danger of damage or

destruction by any construction, the County Surveyor shall be notified in writing,

Chapter 2 Page 16

Revised April 2019

not less than 10 working days prior to construction. The County Surveyor shall be

reimbursed for all expenses from said replacement by the party responsible for the

construction.

In accordance with ORS 209.150, any person or public agency removing, disturbing

or destroying any survey monument of record in the office of the County Surveyor

shall cause a registered Professional Land Surveyor to file a reference with the

County Surveyor and replace the monument with 90 days of the removal,

disturbance, or destruction. Failure to comply with this provision is subject to

penalty according to ORS 209.990.

New Survey Monuments

Street Centerline Monumentation shall be in accordance with ORS 92.060

Subsection (2) and/or 209.15 Section 2. The centerlines of all street right-of-way

shall be monumented before the City will accept a street improvement project.

Monuments shall be set under the direction of a registered Professional Land

Surveyor. A record of survey must then be filed in compliance with ORS 209.250

and any additional requirements set forth by the City.

All centerline monuments shall be placed in a monument box conforming to City

standards and the top of the box shall be set at design finished grade. Monument

boxes shall be of a type approved by the City before installation in accordance with

the City’s Standard Drawing 170 for Monument Boxes. If monument boxes are

installed after the pavement has been placed, a circular saw shall be used, and the

void filled with concrete or approved equal material.

The following centerline monuments shall be set:

a. At centerline intersections created with existing streets or new streets.

b. The centers of all cul-de-sacs.

c. Curve points in accordance with ORS 92.06 and 209.15.

All underground utilities shall be placed in positions that do not interfere with

Centerline Monumentation.

Chapter 2 Page 17

Revised April 2019

New Survey Benchmarks

When permanent benchmarks are established the surveyor of record shall submit

verification to certify how the benchmark was established and that it is accurate to

the nearest 0.10 ft. The City will provide a bronze cap for the benchmark.

EASEMENTS

An 8-foot wide Public Utility Easement (PUE) shall be granted along all proposed and

existing street frontages in new developments.

The developer shall furnish all necessary utility easements in accordance with each

utility company’s requirements. Water easements are under the jurisdiction of the

Sunrise Water Authority or Clackamas River Water. Storm and sanitary sewer

easements are under the jurisdiction of Water Environment Services of Clackamas

County.

Site distance easements shall be encompassed in a separate open space tract. See

Chapter 3, Section 4b for more information.

PERMITS

The following permits must be obtained prior to beginning project construction:

Tree Removal Permit

A Type B Permit is required when trees are to be removed in conjunction with a

subdivision, PUD, land partition or nonresidential construction project. The Type B

Tree Removal Application is available on the City’s website or at City Hall. The Tree

Removal Application must be reviewed and approved by City staff prior to the

issuance of a permit and removal of trees.

Site Development Permit

The Site Development Permit application provides the City with specific details

about development projects and grading projects over 1000 cy. The permit is

available on the City’s website or at City Hall.

Chapter 2 Page 18

Revised April 2019

Engineering Minor Grading and Retaining Wall Permit

The permit application provides the City with specific details about minor grading

(less than 1000 cy) and retaining wall projects. The permit is available on the City’s

website or at City Hall. See Chapter 2, Section 3e for more information about

retaining wall requirements.

Engineering Erosion Control Permit

The permit application is available on the City’s website or at City Hall, and is

required for any construction, grading or excavation work that disturbs more than

500 sf of ground.

Right-of-Way Permit

The Right-Of-Way permit allows for the installation of improvements or utilities

within the existing or proposed public right-of-way. The Right-Of-Way permit is

available on the City’s website or at City Hall. The Right-Of-Way permit must be

reviewed and approved by City staff prior to the issuance of a permit and

construction.

NPDES 1200-C Permit

The NPDES 1200-C Permit must be obtained from DEQ if the disturbed area on a

project is over one acre. Provide the City with a copy of the approved 1200-C

permit.

PAVEMENT MORATORIUM

The City does not allow street cuts in an arterial or collector street that have been paved

or resurfaced within the previous 5 years, or in other streets that have been paved or

resurfaced within the previous 3 years. Unavoidable cuts into a moratorium street will

require extended pavement restoration limits, to be determined on a case-by-case basis

by the City Engineer.

Chapter3 Page1

RevisedApril2019

CHAPTER3

STREETDESIGN

GENERALREQUIREMENTS

FunctionalClassification

ThefunctionalclassificationsofexistingandproposedstreetsinHappyValleyare

establishedbytheCity’sTransportationSystemPlan(TSP).Thestreetcrosssection

foreachfunctionalclassificationissetintheTSP,specifyingthestreetwidth,right‐

of‐waywidth,publicutilityeasementwidth,numberoftravellanes,theplanter

stripandsidewalkconfiguration,andbikelanerequirements.CityStandard

Drawings100thru145reflecttheTSPcrosssectionrequirements.



TherearemultipleoptionsforcollectorfacilitycrosssectionsintheTSPthatmay

beproposedthroughthelanduseapplicationprocess.Collectorcrosssections

withon‐streetparkingmaybeconsideredonroadwayslocatedeastofSE162



Avenuewhenthefrontagepropertyiszonedresidential,multi‐familyresidentialor

commercial.On‐streetparkingisnotallowedwithin100feetofanintersectionor

wherethepostedspeedlimitisover30milesperhour.Onstreetparkingrequires

aminimum8‐footwideparkingspacebetweenthebikelaneandcurb.Atwo‐lane

crosssectionmayonlybeconsideredwhereenvironmentalconstraintsarepresent

tolimittheimpactsoftheroadway,andwhereacenterleftturnlaneisnot

required.Useofthetwo‐lanecollectorcrosssectionrequiresapprovalfromthe

CityEngineer.

AccessManagement

AccessspacingstandardsaredefinedintheCity’sTSP.Newdevelopmentand

roadwayprojectslocatedonCitystreetfacilitiesshallmeettheaccessspacing

standardswithintheTSP.Accesspointsincludepublicstreets,privatestreets,and

privatecommercialorresidentialdriveways.Blocklengthsshallbeinaccordance

withMunicipalCodeSubsection16.42.050.B.9.a.



Thedistancebetweenaccesspointsismeasuredfromthecenterlineofthesubject

streettothecenterlineoftheadjacentstreet.TheCityEngineershallhavethe

Chapter3 Page2

RevisedApril2019

authoritytolimitaccessanddesignateaccesslocationsonpublicstreetsunderthe

jurisdictionoftheCity.



StructuralPavementSections

SubgradeevaluationandrecommendationsshallbepreparedbyaProfessional

EngineerregisteredintheStateofOregonwhoseareaofexpertiseisgeotechnical

engineeringandshallbesummarizedinaGeotechnicalReport.TheGeotechnical

Reportshalladdresssubgradedrainageandgroundwaterconsiderationsforyear‐

roundconditions.Recommendationsforbothdry‐weatherandwet‐weather

constructionshallbeincluded.



TheminimumdesignlifeforCitystreetsis25years.City’sStandardDrawingNo.

160outlinestheminimumpavementsectionsusedinHappyValleyforeach

functionalclassification.Projectedtrafficloadingsorpoorsoilconditionsmay

requireaspecialpavementdesignsection.Asphaltpavementshallbedesigned

usingnationallyrecognizedprocedures;theAASHTOmethodortheAsphalt

Institutemethod.



AggregatebaseshallmeetODOTSpecificationsSection00641fordense‐graded

baseaggregate.BaserockshallbecompactedinaccordancewithODOT

Specifications.



Hotmixasphaltconcrete(HMAC)pavementshallbedesignedandconstructedin

accordancewithODOTSpecificationsSection00745.



Thetopliftofasphaltconcretepavementshallbeplacedpriortotheacceptanceof

theproject.

DesignSpeed

Designspeedshallbeasfollows:

Arterials  35milesperhour

Collectors

35milesperhour

Neighborhood

25milesperhour

LocalResidential

25milesperhour

Chapter3 Page3

RevisedApril2019

SubsurfaceDrainage

Ifrequiredbythegeotechnicalengineer,subsurfacestreetdrainageshallbe

anintegralpartofstreetdesign.Subsurfacedrainsshallbedesignedand

constructedtoproperlyaddresstheaffectedsoil.

Intheeventthatnosubsurfacedrainageisrequiredbasedonasoilsreport,a

transverseperforateddrainpipeshallbeinstalledbelowthesub‐baserockat

thepointofeachsagverticalcurve.

Thesubsurfacedrainsareforthepurposeofcollectingandconveying

subsurfacewateronly,notsurfacerunoff.Theyarenottobeconsideredpart

ofthestormdrainagesystemforstormdrainpipesizingpurposes.

Subsurfacedrainsshallconnectanddrainintothestormdrainagesystemat

catchbasins,curbinlets,gutterinlets,manholesorroadsideditches.

Surchargefromthestormdrainagesystemshallnotbeallowedtobackup

intothesubsurfacedrains.

Alternativesubsurfacedrainagemeasuresmaybeusedifapprovedbythe

CityEngineer.

Guardrails

Thefollowingspecifiestheminimumrequirementsforthelocationandtype

ofguardrails:

Thedecisionofwhethertoinstallaguardrailornotshallbebasedon

informationfoundintheAASHTOpublication,“GuideforSelecting,Locating

andDesigningTrafficBarriers”.

GuardrailsshallbedesignedandconstructedperODOT’sStandardDrawings

forDesignandConstruction.

HORIZONTALSTREETALIGNMENT

a. Thelayoutofstreetsshallprovideforthecontinuationofstreetsexistingin

adjoiningpartitions,subdivisionsorplannedunitdevelopmentsoroftheir

projectalignmentswhenadjoiningpropertyisnotsubdividedorpartitioned.

Chapter3 Page4

RevisedApril2019

b. Thecenterlinealignmentofstreetimprovementsshallbeidenticalwiththe

centerlineoftheright‐of‐way.Thecenterlineofaproposedstreetextension

shallbealignedwiththeexistingstreetcenterline.

c. Curblineradiishallbeconcentricwiththeright‐of‐waylineexceptincul‐de‐sacs

andeyebrows.

d. HorizontalcurvesshallmeettheminimumradiusrequirementssetbyAASHTOA

PolicyonGeometricDesignofHighwaysandStreets,latestaddition,exceptas

notedinebelow.

e. Theminimumcenterlineradiusforstreetcurvesshallbeasfollows:

Arterials  Threehundred(300)feet

Collectors  Twohundred(200)feet

Neighborhood Onehundred(100)feet

LocalResidential Onehundred(100)feet*



*90°turnsmaybeusedonalocalstreetwiththeadditionofaneyebrow

asnotedinSection5fofthisChapter.

f. Thelengthoftheroadwaytransitionsfromawiderwidthtoanarrowerwidth

shallbebaseduponthefollowing:

L= WS²  forspeedslessthan45MPH

 60



Where L = minimumtaperlength(ft)

  S = designspeed(MPH)

  W = offset(shift)width(ft)

Withinbikelanesorshoulders,roadwaywidthtransitionsshallhaveaminimum

10(length)to1(offset)taper.

g. Roadwaywidthtransitionsfromanarrowerwidthtoawiderwidthshallbe

designedwithathreetoonetaper.

h. Delineators,asapprovedbytheCityEngineer,maybeinstalledtodefinethe

roadwaywidthconfiguration.Maximumspacingofdelineatorsshallbethe

numericalvalueofthedesignspeed,infeet,i.e.,thirty‐five(35)footspacingfor

thirty‐five(35)mph.

Chapter3 Page5

RevisedApril2019

i. Insituationswhereataperedtransitioncannotbeprovided,abarricadeshallbe

installedattheendofthewidersectionofthestreetandatapershallbe

appointedanddelineatedasapprovedbytheCityEngineer.Ifthewidersection

doesnotprovideanadditionaltravellane,onlyabarricadeisrequiredwithout

thetransition.

VERTICALSTREETALIGNMENT

a. Theconstructionplansshallincludeadesignprofileforallstreetswithinthe

project.TheprofileshallconformtoSection2cofChapter2.

b. Minimumtangentstreetgradientsshallbe1%alongthecrownandgutterline.

c. Maximumstreetgradientsshallbe8%forarterialandcollectorstreets,and10%

forneighborhoodandlocalresidentialstreets.Gradesinexcessof10%butnot

morethan12%maybepermittedonlocalresidentialforshortdistancesand

mustbeapprovedbytheCityEngineeronanindividualbasis.

d. IntersectionlandingsshallconformtoSection4dofthisChapter.

e. Gradechangesofmorethan1%shallbeaccomplishedwithverticalcurves.

f. Atstreetintersections,thecrownofthemajor(higherclassification)streetshall

continuethroughtheintersection.Theroadwaysectionoftheminorstreetwill

flattentomatchthelongitudinalgradeofthemajorstreetattheprojectedcurb

line.

g. Streetgrades,intersections,andsuperelevationtransitionsshallbedesignedto

notallowconcentrationsofstormwatertoflowacrossthetravellanes.

h. Shedsectionsandoffsetcrownsmaybeallowedandmustbeapprovedbythe

CityEngineeronanindividualbasis.

i. Slopeeasementsshallbededicatedorobtainedforthepurposesofgrading

outsideoftheright‐of‐way.

Chapter3 Page6

RevisedApril2019

j. VerticalcurvesshallbeparabolicandconformtothevaluesinTable3‐1andare

calculatedasshownbelow:

K = L

A



Where A = algebraicdifferenceingrades(percent)

  L = lengthofverticalcurve(feet)



Table3‐1

DesignControlsforStoppingSightDistanceforCrestandSagVerticalCurves

DesignSpeed(MPH) K‐Crest K‐Sag

15 3 10

20 7 17

25 12 26

30 19 37

35 29 49

40 44 64

45 61 79

50 84 96

55 114 115

K‐valuesbaseduponAASHTOAPolicyonGeometricDesignofHighwaysandStreets,latestaddition

NOTE:K‐sagvaluesmaybereducedifstreetlightingispresent.AASHTOpublication,PolicyonGeometric

DesignofHighwaysandStreets,latestaddition,shallserveasaguide



k. Theminimumverticalcurvelengthshallbefifty(50)feet.

l. K‐SagvaluesmaybereducedtoK‐Crestvaluesifadequatestreetlightingis

presentalongtheentiresagverticalcurve.

m. Streetsintersectedbystreetsnotconstructedtofullurbanstandardsshallbe

designedtomatchbothpresentandfutureverticalalignmentsoftheintersecting

street.Therequirementsofthismanualshallbemetforbothpresentandfuture

conditions.

Chapter3 Page7

RevisedApril2019

INTERSECTIONS

Anintersectionisdefinedasbeingthemeetingoftwostreetshavingatleastthreelegs.

a. Theinteriorangleatintersectingstreetsshallbe90degrees.Whereintersecting

streetscannotbekeptatrightanglesduetoexistingdevelopmentor

topography,theinteriorangleshallnotbelessthan75degrees.Atangent

sectionshallbecarriedaminimumof25feeteachsideofintersectingright‐of‐

waylines.

b. Thecenterlinesofintersectingstreetsshallalignwithnooffset.

c. Sightdistanceatintersectionsshallmeettheminimumrequirementsfor

intersectionsightdistancesetbyAASHTO“APolicyofGeometricDesignof

HighwaysandStreets”,latestedition,baseduponthedesignspeed.Whena

sightdistanceeasementisneededatanintersection,anopenspacetractshallbe

dedicatedtoobtainthecorrectsightvisibility.Plantingsorstructuresintheopen

spacetract/sightdistanceeasementshallconformtoSection4cofthisChapter.

d. Aclearvisionzoneshallbeprovidedatallintersections.Theclearvisionzoneis

definedasthetriangularareabeginningattheintersectionoftheprojectedright‐

of‐waylines,andextending25feetalongeachlegoftheintersection.Nofence,

berm,wall,vehicle,hedgeorotherplantingorstructureshallbeplacedwithin

theclearvisionzonethatwouldimpedevisibilitybetweentheheightof30inches

and10feetasmeasuredfromthetopofcurb,orintheabsenceofcurb,fromthe

establishedstreetcenterlineelevation.Poles,treetrunks,andsimilarobjects

lessthan12inchesinwidthmaybeallowedintheclearvisionzoneiftheymeet

theverticalrequirementsnotedabove.

e. Atintersections,alandingshallbeprovidedonthesecondaryorsubordinate

approach,oronastop‐controlledapproach.Thelandingshallhaveaslopeof5%

orlessfor50feet.Landingsarethatportionofthetraveledstreetthatextend50

feetbeyondtheprojectedcurblineoftheintersectionstreetatfull

improvement.

f. Curbcornersshallbedesignedsothatthegradeshallflowsmoothlyfromone

streettotheotherwithproperattentiondirectedtodrainage.

Chapter3 Page8

RevisedApril2019

g. SidewalkcurbrampsconformingtothePublicRights‐of‐WayAccessibility

Guidelines(PROWAG)shallbeprovidedatallcornersofallintersectionswhere

crossingispermitted,regardlessofcurbtype,andshallconformtoSection13of

thisChapterandCity’sStandardDrawingNo.245.

h. CurbradiiatintersectionsshallbeasshowninTable3‐2forthevariousfunction

classificationswithexceptionssubjecttoapprovalbytheCity’sauthorized

representative.Theright‐of‐wayradiiatintersectionsshallbesufficientto

maintainatleastthesameright‐of‐waytocurbspacingasthelowerclassified

street.

Table3‐2

MinimumTurningRadii(feet)

Minimumradiusalongedgeofpavementorcurb

Functional

Classification

Major

Arterial

Minor

Arterial

Collector Neighborhood Local

MajorArterial 35 35 30 25 25

MinorArterial  35 30 25 25

Collector   25 25 25

Neighborhood    25 25

Local     25

Ifabikelaneoron‐streetparkingexists,aboveradiimaybereducedbyfivefeet

CUL‐DE‐SACS,EYEBROWS,LOOPTURNAROUNDS



Thefollowingspecifiestheminimumrequirementsforcul‐de‐sacs,eyebrowsandloop

turnaroundareas.Otherturnaroundgeometricsmaybeusedwhenconditionswarrant

andwhentheCityEngineerandClackamasFireDistrict#1approvethedesignand

applicationofitsuse.

a. Cul‐de‐sacs,eyebrowsandotherturnaroundareasshallbeallowedonlyonlocal

residentialstreetsandcommercial/industrialstreets.Cul‐de‐sacsshallnotbe

morethan200feetinlength.Exceptionstothecul‐de‐saclengthshallbein

accordancewithMunicipalCodeSubsection16.50.030.B.9.d.Thelengthofthe

cul‐de‐sacismeasuredalongthecenterlineoftheroadwayfromthenearside

right‐of‐wayofthenearestthroughtrafficintersectionstreettothefarthest

pointofthecul‐de‐sacright‐of‐way.

b. Themaximumgradeinacul‐de‐sac,turnaroundoreyebrowshallbe5%.

Chapter3 Page9

RevisedApril2019

c. Theminimumcurbradiusforthecul‐de‐sacbulbshallbe45feet.Theright‐of‐

wayradiusshallbesufficienttomaintainthesameright‐of‐waytocurbspacing

asintheadjacentportionoftheroad.

d. Cul‐de‐sacandotherturnaroundareasshallhavean8‐footpublicutility

easementextendingoutsidetheright‐of‐wayaroundthecul‐de‐sac,

continuously.

e. Theminimumcurbradiusfortransitionintocul‐de‐sacbulbsandeyebrowsshall

be28feet.Theright‐of‐wayradiusshallbesufficienttomaintainthesameright‐

of‐waytocurbspacingasintheadjacentportionoftheroad.

f. Providepedestrianconnectivityattheendofthecul‐de‐sacinaccordancewith

MunicipalCodeSubsection16.50.030.B.9.d.iv.

g. Aneyebrowcornermaybeusedonalocalstreetwhereexpectedaveragedaily

traffic(ADT)countswillnotexceed500vehicles.Theminimuminsidecurbradius

foraneyebrowshallbe28feet.Theminimumcurbradiusfortheeyebrowshall

be40feet.Theminimumcenterlineradiusforaneyebrowshallbe44feet.

h. A“mini”cul‐de‐sacbulbradiusmaybeproposedonadevelopmentduringthe

landuseapplicationprocessiftherearetopographicornaturalresource

constraintsontheland.Topographicconstraintsshallbelimitedtotransition

slopes(15‐24.99%)orconservationslopes(25%+).Naturalresourceconstraints

shallincludewetlandsorripariancorridorsthatexistontheland.Theminimum

curbradiusonthe“mini”cul‐de‐sacshallbe30feet.Anemergencyturnaround,

approvedbytheFireDistrict,shallbeincludedinthe“mini”cul‐de‐sacdesign.

STUBSTREETSANDHALFSTREETS



a. Stubstreetsallowforfuturestreetextensionsandshallbeconstructedtothe

developmentpropertyline.Atemporaryall‐weatherturn‐aroundshallbe

providedattheendofstubstreetsthatexceed150feetinlength.The

turnaroundshallbebuilttoClackamasFireDistrict#1standards.Barricadesshall

beplacedattheendofallstubstreetsinaccordancewithCity’sStandard

Drawing310and/or315.

Chapter3 Page10

RevisedApril2019

b. Halfstreetdesignsrequirecrosssectiondatathatillustratestheelevationsat

streetcenterline,sawcutline,andgutterlineat25feetoncenter.Stations,

offsetsandcrossslopesshallbeshownontheplans.

c. Theminimumpavedwidthforfrontageimprovementsshallbe¾’softhe

functionalclassification’spavedwidth.

d. Crossslopegradebreakscreatedbythenewgutterlineshallbeprovidedforhalf

streetimprovements.Themaximumgradebreakbetweentheexistingand

proposedcrossslopesshallbe2percent.

e. Theminimumcrossslopeonthenewhalfstreetshallbe1%.Themaximumcross

slopeshallbe6%.

f. Crosssectionsshallbeprovidedthroughexistingdriveways.

PRIVATESTREETSANDALLEYS

a. Privatestreetswithinsingle‐familyresidentialdevelopmentsshallbedesignedto

provideaccesstonomorethanfivedwellingunits.

b. Privatestreetsservingattachedhousingandmultifamilyhousingdevelopments

shallprovidecommercialdrivesinconformancewithCity’sStandardDrawingNo.

275or280.

c. Thepavementsectionshallbecapableofsupportingtheimposedloadoffire

apparatusweighingatleast75,000poundsinaccordancewiththestandardsset

byClackamasFireDistrict#1developmentcodes.

d. Thepavedwidth,unobstructedclearzonesandstructuralroadwaysectionfor

privatestreetsshallbeinaccordancewithCity’sStandardDrawingNo.120.

e. Themaximumgradeforprivatestreetsshallbe12%.

f. Whereexistinggradesaresuchthatprivatestreetsmustexceed12%toprovide

accesstoasite,thedevelopershallsubmitarequestforavariancetotheCity

andClackamasFireDistrict#1forreviewandapproval.

Chapter3 Page11

RevisedApril2019

RAISEDMEDIANS

a. Theraisedmedianshallbesetbackatleasttwofeetfromthemedianlaneon

bothsides.

b. Raisedmedianswithinacul‐de‐sacbulbshallrequiremountablecurbandgutters

ontheoutsideoftheradiusforemergencyvehicles.

c. Streetlightingshallbesufficienttoprovideilluminationoftheraisedmedian.

d. Objects,suchastrees,shrubs,signs,lightpoles,etc.,shallnotphysicallyor

visuallyinterferewithvehicleorpedestriantrafficinthetravel‐way.

e. Thestyleanddesignoftheraisedmedianshallbesitespecific.Theraisedmedian

designsandlandscapingshallbesubjecttoPlanningCommissionapproval.

CURBANDSIDEWALKS

a. Curbandguttershallbeprovidedwithsidewalksonbothsidesforallroad

classifications.Theminimumgradeforcurbandguttershallbe1%.

b. Theminimumunobstructedwidthofthesidewalkistobefivefeetinaccordance

withMunicipalCodeSubsection16.50.030.H.2.j.

c. SidewalksshallbeseparatedfromthecurbasindicatedintheTSPandstandard

details.Themaximumsidewalkslopeshallbe15%.

d. SidewalkTripHazard–Asidewalktriphazardexistsifthereisaverticalheight

differencebetweenadjacentsidewalkpanelsections.Ifthesidewalkisraised

morethan½”andlessthan1”,theconcretemaybegroundtoremovethetrip

hazardinaccordancewithCity’sStandardDrawing255.Ifthesidewalkisraised

morethan1”,onecompletepanelataminimumshallberemovedandreplaced

toeliminatethetriphazard.

DRIVEWAYS

a. DrivewaysshallconformtoCity’sStandardDrawings.Curbremovalfor

drivewaysshallbebysawcutting.

Chapter3 Page12

RevisedApril2019

b. AlldrivewaysshallbepavedwithasphaltorconcreteperMunicipalCode

Subsection16.41.030.B.4.Anexceptionmaybemadeforlongruraldriveways,as

longasthefirst50feetofdrivewayfromthepublicroadispaved.

c. DrivewayaccessspacingshallbeinaccordancewiththeTSP.

d. Drivewaysshallmeettheminimumintersectionsightdistancerequirements.

e. Concentratedsurfacerunoffshallnotbeallowedtoflowovercommercial

drivewaysorsidewalksintothestreet.

f. Themaximumdrivewaygradeforasingle‐familydwellingis12%inaccordance

withClackamasFireDistrict#1standards.Whenfiresprinklersareinstalled,a

maximumdrivewaygradeof15%to18%maybeallowedwiththeapprovalof

theCityEngineerandClackamasFireDistrict#1.Gradesgreaterthan12%will

affectemergencyresponsetime.

g. Themaximumwidthofadrivewaythroatshallbe35feetasshownonCity’s

StandardDrawing270.

h. Provideafive‐footbufferfromtheedgeofadrivewaytoafirehydrantand/or

streetlight.Anexceptionmaybemadeindevelopmentswith3000sflots,or

less,onacasebycasebasis.

TYPICALCROSSSECTIONS

Gradingoutsidetheimprovedareasshallbe2%upwardtotheright‐of‐wayline,5:1

upwardordownwardwithinthepublicutilityeasementandnosteeperthan2:1upor

downoutsidethepublicutilityeasement.

Cross‐slopeofstreetsshallbenotlessthan2%orgreaterthan5%.Wherever

practicable,thecrownofthestreetandtopofcurbshallhavethesameelevation.

PLANTERSTRIP

TheplanterstriplandscapingandstreettreesshallconformtoMunicipalCodeSection

16.42.040.Alandscapeplanfortheplanterstriplandscapingandstreettreesshallbe

includedtheconstructionplansetasnotedinSection2bofChapter2.

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RevisedApril2019

CURBRETURNS/ADAACCESSIBILITY

BecauseofthetopographyinHappyValley,anindividualcurbreturndesignshallbe

includedintheplansetforeachcurbreturn.Provideaprofileofthecurbreturnthat

extends50feetbeyondthePC/PTofthecurbreturn.Provideaplanviewofeachcurb

returnwithspotelevationsandsidewalkslopesatthePC/PT,landing,andramps.The

landingshallhaveamaximumof2%slopeinalldirections.

ThemaximumgradeontheADArampsis8.33percent.Theminimumgradeis1%.All

gradesshallslopetowardthestreet.Yellowtruncateddomesaretobeinstalledinthe

throatoftheADAramp.Crosswalkslopesandrampdesignsshallbeinaccordancewith

thelatestADAguidelines.

CurbrampsshallconformtoCity’sStandardDrawingNo.245.

CATCHBASINS



Streetswithbikelanesshallhavecurbinletssothatthereisnogratelocatedinthebike

lane.Catchbasinsshallbespacednomorethan250feetapart.

NOPARKINGZONES



NoParkingZonesshallbesignedandthecurbpaintedyellow.VehiclesparkedinNo

ParkingZonesandNoParkingFireZonesmaybeticketedortowed.



Chapter4 Page1

RevisedApril2019

CHAPTER4

SITEIMPROVEMENTPLANS

1. GENERAL

SiteImprovementPlansforcommercial,industrial,andmultifamilydevelopmentsare

reviewedbytheEngineeringDivision.SiteImprovementPlansshallbedesignedand

stampedbyaprofessionalengineer,registeredintheStateofOregon,hereinafter

referredtoastheDesignEngineer.Theseprojectsaregenerallyconditionedthrough

theDesignReviewlanduseapprovalprocess.Chapter2oftheEngineeringDesign

ManualprovidesdrawingrequirementsfortheSiteImprovementConstructionPlans.



2. GRADINGANDEROSIONSEDIMENTCONTROL

TheEngineeringDivisionreviewsthesitegradinganderosionsedimentcontrolplansfor

commercial,industrial,andmultifamilydevelopments.Chapter2,Section4provides

therequirementsforthegradinganderosionsedimentcontroldesign.

3. RETAININGWALLS

Retainingwallsgreaterthanfourfeetinheightshallhaveaprofessionalengineeror

geotechnicalengineerregisteredintheStateofOregonprovidestampeddesign

calculationsanddetaildrawingsrequiredfortheretainingwallconstruction.See

Chapter2,Section3gforretainingwalldesignguidelines.

4. PARKINGAREAS

ThegoalofsitedesigninHappyValleyistoprovideforthesafemovementofall

vehicles,pedestriansandserviceproviders.Allparkingareasshallhavepavedsurfaces.

Generalparkingareaslopesshallnotexceed5%.Driveaislesnotadjacenttoparking

spacesshallnotexceedalongitudinalslopeof12%.Crossslopesshallnotexceed5%.



Concentratedsurfacerunoffwillnotbeallowedtoflowovercommercialdrivewaysor

sidewalksintothepublicstreet.



 

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ParkingLotLayout

TheparkinglotdesignshallbeinaccordancewithMunicipalCodeSection

16.43.030andshallbestampedbyaprofessionalengineer,registeredintheState

ofOregon.Tobeconsideredaparkingspace,adequatemaneuveringareashallbe

providedforeachvehicletoenterandexitsaidparkingspace.Adequateaislesor

turnaroundareasshallbeprovidedsothatallvehiclesareabletoenterthepublic

right‐of‐wayinaforwardmanner.Bicycleparkingshallbeprovidedinaccordance

withMunicipalCodeSection16.43.040.MinimumAASHTOsightdistance

requirementsshallbemetatallstreetsandinternalsiteintersectionsand

driveways.



Thedeveloper’sengineershallprovidetheCitywithasiteplanexhibitshowingthe

expectedroutesandturningpatternsforemergencyvehicles,garbagetrucks,and

delivery/movingtrucksinteriortothesite.Thesiteplanexhibitshallbeseparate

fromtheconstructiondrawings.



ThefireturnaroundlocationsanddimensionsshallbesuperimposedontheSite

ImprovementPlanintheconstructionplansetandshallbeapprovedbyClackamas

FireDistrict#1.

HeavyPavementSection

Theroutethroughtheparkinglotforemergencyvehicles,garbagetrucks,and

delivery/movingtrucksinteriortothesiteshallhaveapavementsectioncapableof

supportingtheimposedloadoffireapparatusweighingatleast75,000poundsin

accordancewiththestandardssetbyClackamasFireDistrict#1.TheCity’s

standardpavementsectionforresidentialstreetswillmeetthisrequirement.

SignageandStriping

Provideaparkinglotsignageandstripingplanforreviewthatisstampedbya

professionalengineer,registeredintheStateofOregon.Compactparkingstalls

shallbestripedassuch.SeeMunicipalCodeSection16.43.030formore

information.

 

Chapter4 Page3

RevisedApril2019

Lighting

Adequatelightingshallbeprovidedonallprivateaccessroadsandparkinglotsin

accordancewithMunicipalCodeSection16.43.030.F.6.

5. ADASTANDARDS

AllcurrentADArequirementsforparkinglots,streetsandintersectionsshallbemet

.

ThesitelayoutwillbereviewedforconformancetotheAmericanswithDisabilitiesAct

(ADA)StandardsforAccessibleDesign.

CurbRampsandAccessibleRoute

ProvidespotelevationsforthecurbrampsandalongtheaccessiblerouteforCity

review.Provideanaccessibleroutefromthepublicright‐of‐waytothebuilding.

ADAParkingSpaces

SeeCityStandardDrawingNo.335foradetailoftheAccessibleParkingArea

Stencil.

6. LANDSCAPEPLAN

TheSiteImprovementPlansshallincludeasitelandscapeplan,signedbyalandscape

architectasspecifiedinMunicipalCodeSection16.42.Wheelstopsshallbeprovidedto

protectlandscapedareas.



Chapter5 Page1

RevisedApril2019

CHAPTER5

CONSTRUCTION

1. PRE‐CONSTRUCTIONMEETING

Priortobeginningconstruction,thecontractorshallattendapre‐constructionmeeting

withCitystaff.SeeChapter1,Section6formoreinformation.Anycontractor

performingworkintheCityofHappyValleywillneedaHappyValleyBusinessLicense.

2. WORKHOURS

ThehoursofworkarecloselymonitoredbytheCitythroughouttheconstructionofa

project.AConstructionHoursSignshallbeinstalledateveryconstructionsite.Thesign

shallbeinaccordancewiththeCity’sStandardDrawing350andasshownbelow:

SITECONSTRUCTIONSHALLBELIMITEDTO

7:00AMTO6:00PMONWEEKDAYS,AND

8:00AMTO5:00PMONSATURDAYSANDSUNDAYS.



HOWEVER,SITECLEARING,EARTHMOVING,INSTALLATIONOR

CONSTRUCTIONOFUNDERGROUNDUTILITES,PAVINGOFSTREETS

ANDSIDEWALKS,FOUNDATIONFRAMINGANDPOURING,AND

STRUCTURALFRAMINGSHALLBEENTIRELYPROHIBITEDON

SUNDAYS.



TOREPORTVIOLATIONSCALL503‐783‐3800.



TheCityManagerortheDirectorofCommunityServicesmayallowlonger,orrequire

shorter,workhoursdependingonsite‐specificconditions.Thefollowingholidayswill

beconsideredasSundays:NewYear’sDay,IndependenceDay,ThanksgivingDay,and

ChristmasDay.

InordertoperformworkcoveredbytheSiteDevelopmentPermitoutsidetheabove

daysandhours;theowner,developer,orEngineerofRecord(orcontractorif

accompaniedbyawrittenauthorizationbyDeveloper)shallsubmitarequestinwriting

Chapter5 Page2

RevisedApril2019

atleasttwofullbusinessdayspriortotherequestedday.Thisrequestshallindicate

whatspecialcircumstancerequirestheworktobeperformedoutsidethestandard

workweekasdescribedabove.Tobevalid,theCityManagerortheDirectorof

CommunityServicesapprovalmustbeinwritingandthisapprovalshallbeavailableat

thesiteontheapprovedworkday,andacopyofitshallbesubmittedwiththeEngineer

ofRecord’sdailyreporttotheCityEngineer.Requestsmadewithlessthantwodays’

noticemaynotbeapprovediftheCityManagerorDirectorofCommunityServicesis

notavailable.

PlacementofpavementonfutureorexistingpublicstreetsshalloccurMondaythrough

Friday.Pavementshallnotbeplacedonweekendsorholidays.

3. EROSIONANDSEDIMENTCONTROL

TheCityofHappyValleyhasadoptedtheWaterEnvironmentServices(WES)Erosion

PreventionandSedimentControlPlanningandDesignManual(latestversion)asthe

standardforerosionandsedimentcontroldesignandconstructionrequirements.All

fencing,erosionandsedimentcontrolfacilitiesandconstructionentrancesshallbe

installedandinspectedbytheCitypriortobeginninganyworkonthesite.

a. Vegetativecovershallbemaintainedonslopesorestablishedthroughnew

plantingsforstabilityanderosioncontrolpurposes.Vegetationshallnotbe

strippedfromanysteeplyslopedareaexceptforconstructionofutilities,internal

streets,parkingareas,pedestrianfacilities,retainingwallsandbuildings.

b. SedimentTrackingandDustControl‐Sedimentthatistrackedoffofa

constructionsiteandontoadjacentpublicstreetswillneedtoberemoved

immediatelybymechanicalmeansratherthanwashingwithwater.Dustshallbe

controlledwithinthedevelopmentduringconstructionandshallnotbe

permittedtodriftontoadjacentproperties.

c. Wetweathermeasuresshallbeimplementedandmaintainedbetweenthedates

ofOctober1standApril30th.Note:Experiencehasshownthatoncethefine

claysoilsintheHappyValleyareabecomewaterborne,theyarenoteasily

separatedfromwater.Mechanicalsystems,suchasBakerTanks,arethemost

effectivemeansoffiltrationforthesesoiltypes.

Chapter5 Page3

RevisedApril2019

d. WhenacontractorordeveloperrequeststouseCement‐TreatedBase(CTB)ona

project,theywillberequiredtoprovidetheCitywitharecommendedpavement

sectionfromtheprojectGeotechforCityreviewandastormwatermonitoring

actionplan.SeeChapter2,Section3.cformoreinformation.

e. Priortoprojectacceptance,thesitevegetationmustbeestablishedand/orfinal

erosioncontrolmeasurescoveringallexposedsoilsneedtobeinplace.

4. SAFETYANDTRAFFICCONTROL

a. Thecontractorisresponsibleforthesafetyoftheworkzoneandofallpersons

andpropertycomingintocontactwiththework.Thecontractorshallcomply

withallrequirementsprescribedbyOSHA.Workzonetrafficcontrolshall

conformtothemostrecenteditionoftheMUTCD.

f. AttheCity’sdiscretion,atrafficcontrolplanshallbesubmittedpriorto

construction.Acopyofthetrafficcontrolplanshallbeon‐siteatalltimes.

g. SignsonTemporarySignSupportsshallberetroreflectiveroll‐upsigns.

Temporarytrafficcontrolmeasuresshallnotbelocatedonsidewalksorinbike

lanes.Sidewalkandbikelaneclosuresshallbesignedinconformancewiththe

MUTCDandincludedintheworkzonetrafficcontrolplan.Theroll‐upsignsshall

beremovedattheendoftheworkdayandwhenworkisnotoccurring.

h. Temporarytrenchpatchesshallbemadeusinghotmixasphalt.

i. Steelplateswillnotbeallowedtocoverexcavationsinthetraveledwayduring

themonthsofJanuarythroughApril,NovemberandDecember.Allexcavations

duringtheserestrictedmonthsshallbebackfilledandpatchedtemporarilywith

hotmixasphaltuntilthefinalpavementrestorationoccurs.

j. IfanexcavationhasbeenbackfilledwithCDF,asteelplatemaybeusedtocover

theexcavationuntilthemixcures.Aftercuring,thesteelplateshallberemoved

andtheexcavationpatchedtemporarilywithhotmixasphaltuntilthefinal

pavementrestorationoccurs.Steelplatesshallbesecuredinplacewithpins.

k. TheroleoftheCityInspectorisnotoneofsupervision,safetymanagementor

enforcementofOSHA’srules,butisoneofobservationonly.TheCityInspector

Chapter5 Page4

RevisedApril2019

maypointoutpossibleOSHAviolationstothecontractorbutmustrelyonOSHA

fordeterminingandenforcingviolations.

5. CONSTRUCTIONINSPECTION

TheCityshallbeprovidedaccesstoinspectallimprovementsrequiredunderapermit

orlandusedecision.Thecostsforinspection,planreview,andprojectcoordinationare

assessedandincludedintheissuanceoftheSiteDevelopmentPermitand/orRight‐of‐

WayPermitfee.

AllpublicimprovementsshallbeinspectedbyanInspectingEngineerwhoisanOregon

registeredProfessionalEngineeroraqualifiedindividualunderthesupervisionofan

OregonregisteredProfessionalEngineerasrequiredintheEngineeringServices

Agreement(ExhibitA).

InspectingEngineeringfirms,andallemployeesofsuchfirms,shallnothavea

partnership,oranyformofrealpropertyinterest,inthedevelopmentforwhichthe

improvementsarerequired.TheInspectingEngineer’srelationshiptotheprojectmust

besolelythatofaprofessionalservicenature.

TheCitydoesnotprovidefullinspectionservicesfornon‐publicfundedpublic

improvements.

CityInspectionActivities

AninspectorfromtheCitywillbeassignedtoeachprojecttoprovidesecondary

inspectionservices,whicharelistedbelow.Suchinspectionmayextendtoanyor

allpartsoftheworkandtothepreparationand/ormanufactureofthematerialsto

beused.

TheCityinspectorisnotauthorizedto:

i. Revise,alter,orrelaxtheprovisionsofthespecifications,theapprovedplans,

ortheseStandards.

ii. Directhowtheworkistobeperformed.

TheCityinspectorhastheauthorityto:

i. ActasaliaisonbetweentheInspectingEngineerandtheCity.

Chapter5 Page5

RevisedApril2019

ii. Monitorworkprogressandmaterialsfurnished,includingwithoutlimitation;

thepreparation,fabrication,ormanufactureofmaterialstobeused.

iii. Performadministrativeandcoordinationactivitiesasrequiredtosupportthe

processingandcompletionoftheproject.

iv. Requirerevisionstoapprovedengineeringplanswhennecessarydueto

conflictingfieldconditions.

v. Temporarilysuspendtheworkforsafetydeficienciesandallowworkto

proceedaftersafetydeficiencieshavebeencorrected.

vi. Temporarilysuspendtheworkforerosionandsedimentcontroldeficiencies

andallowworktoproceedaftererosionandsedimentcontroldeficiencies

havebeencorrected.

vii. Exerciseadditionaldelegatedauthority.

TheCityinspectorshallbepresentatthefollowinginspections:

i. VerificationoftheConstructionHoursSigninstallation.

ii. VerificationoftheinitialplacementofErosionandSedimentControl

facilities.Noworkwillbeginuntilthesiteerosioncontrolhasbeeninspected

andapprovedbytheCity.

iii. Proofrollofbaserockpriortocurbplacementandpavingonpublicand

privatestreets.

iv. InspectionofconcreteformsforcurbreturnsandADAfacilities.Note:ADA

forminspectionbytheCitydoesn’tabsolvethecontractorfromthe

responsibilityofensuringthatthefinalconcretemeetstheFederalADA

requirementsandguidelines.

v. Placementandcompactionofpavement.SeeSection2ofthisChapterfor

placementofpavementworkhours.

vi. Stripinglayout.

InspectingEngineer’sActivities

PrivatelyfundedinspectionservicesrequiredbytheCityaretheprimaryinspection

servicesonaproject,aremorecomprehensiveandintensivethanCityinspection

services,andaretheresponsibilityoftheowner,developer,anddesignated

inspectingengineer.Thefollowingminimumactivitiesarerequiredofthe

designatedinspectingengineer:

Chapter5 Page6

RevisedApril2019

i. *ExecutetheEngineeringServicesAgreementacceptingresponsibility.

(ExhibitA)

ii. Maintaindailyinspectionreportswhichcontainthefollowinginformation:

a. JobnumberandnameofEngineeranddesignees

b. Sitedevelopmentpermitnumber

c. Dateandtime(arrivalanddeparture)ofsitevisits

d. Weathercondition,includingtemperature

e. Adescriptionofconstructionactivities

f. Statementsofdirectionstochangeplans,specifications,stopwork,

rejectmaterials,orotherworkqualityactions

g. Publicagencycontactswhichresultinplanchangesorothersignificant

actions

h. Perceivedproblemsandactiontaken

i. Finalandstagedinspections

j. Recordallmaterialandsoiltypesandconditions

k. RecordthelocationofCementAmendedBaseorCement‐Amended

Soilswithintheproject.Theselocationsshallbetransferredontothe

projectAs‐builtConstructionPlans

l. Testresults

m. Recordallpavementgradeanddepthmeasurementsbystreet

stationing

n. Generalremarksincludingcitizencontactorcomplaints

o. MaintainESCdailylogbookandESCinspectionreports

Allactivesitedevelopmentprojectswillberequiredtoturnindailyinspection

reportstotheCityonaweeklybasiscontaininginformationasoutlinedabove.If

thecompiledreportsbecomemorethantwoweeksinarrears,oraresignificantly

deficientasdeterminedbytheCityEngineer,astopworkordermaybepostedon

theprojectsite.

iii. ObtainanduseacopyoftheCity‐approvedconstructionplans,

specifications,andacopyofthismanual.

iv. Reviewandapproveallpipe,aggregate,portlandcementconcrete,asphaltic

concrete,andothermaterialstoensuretheircompliancewithCitystandard.

Chapter5 Page7

RevisedApril2019

v. *ApproveallplanorspecificationchangesinwritingandobtainCity

approval.Allchangestotheapprovedplansorspecificationsmustbewith

theapprovaloftheCitypriortothecommencementofworkaffectedbythe

revision.

vi. MonitorconstructionactivitiestoensureendproductsmeetCity

specifications.

vii. *Perform(orhaveperformed)material,composition,andothertests

requiredtoensureCityspecificationsaremet.

viii. Forstreetconstruction,performthefollowinginspectionsandrecorddateof

each:

a. Curbs,curbandgutter,catchbasinsandstreetinlets,andsidewalk

rampsarebuilttolineandgradeandmeetallADArequirements.

b. Subgrademeetsgradeandcompactionspecifications.

c. Baserockmeetsdepth/thickness,gradation,grade,andcompaction

specifications.

d. Levelingcoursemeetsdepth/thickness,gradation,grade,surface

condition,andcompactionspecifications.

e. Wearingcoursemeetsmaterial,depth/thickness,gradation,grade,

surfacecondition,andcompactionspecifications.

f. ProvidetheCitywith24‐hournoticeofimpendinginspections.

ix. Forgrading,ensurethatthegradingplan,asstaked,willresultinacceptable

slopesalongexteriorpropertylines,properonandoffsitedrainage,and

erosioncontrol.

x. Priortorequestinganybuildingoccupancyoncommercial,multi‐family,

and/orotherprojectswithconcurrentsitedevelopmentandbuilding

permits,theengineershallcertifythatallnecessarypublicimprovements

havebeeninstalledandacceptedincompliancewiththeCityapprovedSite

DevelopmentPermitconstructionplans.Thiscertificationshallalsoindicate

thatallitemsrequired(atorbeforeoccupancyofthefirstbuilding)through

thelanduseprocess,havebeencompleted(includingbutnotlimitedto

paymentofallfees,recordingofallpublicutilityeasements,andobtaining

maintenancebonds).

Chapter5 Page8

RevisedApril2019

xi. CalltotheCity’sattentionwithintwoworkingdaysallplanchanges,material

changes,stopworkordersorerrorsoromissionsintheapprovedplansor

specifications.

xii. NotifytheCity24‐hoursbeforethestartofconstructionorresumptionof

workaftershutdowns,exceptfornormalresumptionofworkfollowing

Sundaysorholidays.

*TheinspectingEngineerofrecordmustpersonallyperformallactivitiesmarkedby

an(*)andmustsuperviseallindividualsperformingdelegatedactivities.Material

testingnotperformedbytheinspectingEngineermustbeaccomplishedbya

recognizedtestingfirmoranotherregisteredengineer.

CityInspectionNotification

ScheduleCityInspectionsatinspect‐engineering@happyvalleyor.gov.Aminimumof

24‐hours’notificationshallbegiventotheCitywhenthefollowingworkistobe

scheduled:

i. Initialplacementoferosionandsedimentationcontrols.

ii. Fencingofgradinglimits.

iii. Proofrollofbaserockpriortocurbplacementandpaving.

iv. ConcreteforminspectionofcurbreturnsandADAfacilities.Note:ADAform

inspectionbytheCitydoesn’tabsolvethecontractorfromtheresponsibility

ofensuringthatthefinalconcretemeetstheFederalADArequirementsand

guidelines.

v. Placementandcompactionofpavement.SeeSection2ofthisChapterfor

placementofpavementworkhours.

vi. Stripinglayout.

Testing



AlltestingrequiredbytheCityshallbeattheapplicant’sexpense.Testingshallbe

inaccordancewiththeODOTManualofFieldTestProcedures,mostrecent

edition.

6. SITEGRADING

Thefollowingareaswillneedtobefencedusingthestandard4’orangeconstruction

fencingpriortoconstruction:

Chapter5 Page9

RevisedApril2019

 Gradinglimits

 Protectivefencingaroundtreesthatwillpreserved‐Atreeremovalpermit

mustbeobtainedfromtheCitypriortotheremovalofanytreesonsitein

conformancewithMunicipalCodeSection16.42.050.

 Conservationeasementlinesorenvironmentallysensitiveareas

Allconstructiontruckingusedforhaul‐offofexcavatedmaterialshallperformtransfer

oftrailerson‐site.SurroundingCitystreetsshallnotbeusedasastagingareafordump

truckswithtrailerstoperformtransfers.Allconstructionsitesshallbemaintainedina

cleanandsanitaryconditionatalltimes.Constructiondebris,includingfoodanddrink

waste,shallberestrictedfromleavingtheconstructionsitethroughtheuseofproper

disposalcontainersorconstructionfencingenclosures.Failuretocomplymayresultina

“StopWork”orderuntildeficiencieshavebeencorrectedtothesatisfactionoftheCity.

Noiseshallbekeptattheminimumlevelpossibleduringconstruction.Thedeveloper

and/orcontractorshallagreetoaggressivelyensurethatallvehiclesworkingonthe

developmentshallhaveadequateandfullyfunctioningsoundsuppressiondevices

installedandmaintainedatalltimes.

7. REVISIONPROCESS

Anysubstantialdeviationfromtheapprovedconstructionplansmusthaveprior

approvaloftheCity.

8. UTILITYINSTALLATIONS

Allutilities,includingelectricalpower,telephone,cableTV,gasandothersshallbe

undergroundwhenassociatedwithnewpublicimprovementsandprivatedevelopment

projects.SeeChapter2,Section4foradditionalinformation.

PLACEMENTOFASPHALTANDCONCRETE

TheCityhasadoptedtheAPWA/ODOTOregonStandardSpecificationsforConstruction.

Themaximumliftthicknessofasphaltpavementshallbe2‐1/2”.Theplacementof

asphaltandconcreteshallbeinaccordancewiththesestandards.SeeSection2ofthis

Chapterforplacementofpavementworkhours.

Chapter5 Page10

RevisedApril2019

10. PRESERVATION,RESTORATIONANDCLEANUP

Theowner,developerand/orcontractorshallpreserve,protectandmaintainexisting

sitefeaturesbeyondtheconstructionlimits.Theexistingpublicimprovements

surroundingthesite,including,butnotlimitedto,theexistingasphaltsurfaces,

sidewalksandADAramps,shallberestoredtotheiroriginalconditionorbetter,priorto

theCity’sacceptanceoftheprojectascomplete.

MinorcracksinthecurbandguttershallbesealedwithSikaflexorapprovedequal.

11. PROJECTACCEPTANCE

TheCitywilldoafinalinspectionwalkthroughoftheprojectwhenallelementsonthe

approvedconstructionplansarecompleteandthefinalerosionandsedimentcontrol

measuresareinplace.Aprojectpunchlistwillbepreparedoutliningtheitemsthat

needtobecompletepriortoprojectacceptanceandsubmittalofbuildingpermits.See

Chapter1,Section7foradditionalinformation.

Exhibit A

Engineering Services Agreement for Development – April 2019 Page 1 of 1

Engineering Services

Agreement for Development

By this agreement, required by the City of Happy Valley, _______________________

_____________________ proposes to provide professional engineering, surveying, and inspection

services for the proposed project, ______________________________

_____________________ and be recognized as the Developer’s representative with responsibilities as

follows:

1. Provide field surveying, engineering, design and drafting to prepare the necessary construction plans

for the proposed project.

2. Submit plans for approvals from the governing agencies.

3. Provide field construction layout for the street improvements, sanitary sewer system and storm

sewer system.

4. Provide continuous field inspection for the project as required, with billing to be on an hourly basis

paid for by the Developer.

5. Provide daily inspection reports to the City of Happy Valley.

6. Approve materials and/or workmanship as required by the plans and specification.

7. Provide written notice to the contractor to stop construction, if necessary, when Engineer is not

satisfied with materials and/or workmanship.

8. Prepare electronic “As-Built” plans and a certificate of completion to the City of Happy Valley for the

constructed street improvements, sanitary sewer system and storm sewer system.

The fee for these services will be as outlined in the proposal dated _____________ for engineering

services.

The Developer and Engineer understand that if these services are not performed to a satisfactory level

as outlined by the above items, the City may issue a Stop Work Order for the site until the items are

addressed and rectified.

Engineer

Developer

Signature of Engineer Signature of Developer

Printed Name of Engineer Printed Name of Developer

Date Date

Exhibit B

General Notes - April 2019 Page 1 of 4

General Notes

1. All work and material shall conform to these plans and the applicable provisions of the City's

Engineering Design and Standard Details Manual (Design Manual), latest edition,

APWA/ODOT Oregon Standard Specifications for Construction, latest edition, and the

Manual on Uniform Traffic Control Devices (MUTCD), latest edition.

2. The contractor shall have a minimum of one (1) set of approved construction plans on the

job site at all times during the construction phases.

3. At the pre-construction meeting, the contractor shall provide the following items:

a. copy of the contractor’s certificate of insurance

b. emergency contact name and phone number

c. traffic control plan

d. list of subcontractors

4. A copy of the permit with all attachments, a copy of the approved construction plans, and all

amendments shall be available at the project site at all times. All work shall conform to the

permit terms, conditions/provisions, approved construction plans, approved plan

amendments, and these general conditions. Changes to any of the aforesaid must be

approved by the project engineer and City, in advance of work performance.

5. The contractor shall have a current Happy Valley business license before starting

construction.

6. A sign shall be posted conspicuously at the job site entrance prior to site construction, and

shall be maintained throughout construction. Use 2-inch high black letters on an orange

background. This sign shall read as follows:

“CONSTRUCTION SHALL BE LIMITED TO 7:00 AM TO 6:00 PM ON WEEKDAYS,

AND 8:00AM TO 5:00PM ON SATURDAYS AND SUNDAYS.

HOWEVER, SITE CLEARING, EARTH MOVING, INSTALLATION OR

CONSTRUCTION OF UNDERGROUND UTILITIES, PAVING OF STREETS AND

SIDEWALKS, FOUNDATION FRAMINING AND POURING, AND STRUCTURAL

FRAMING SHALL BE ENTIRELY PROHIBITED ON SUNDAYS.

TO REPORT VIOLATIONS CALL 503-783-3800.”

7. All fencing, ESC measures, and construction gravel entrances shall be installed and

maintained by the developer and inspected by the City of Happy Valley prior to

beginning work on the site. Call for inspection 24 hours in advance, 503-783-3800.

8. Maintenance of the work area and approach roads is the responsibility of the contractor. the

work area and approach roads shall be maintained in a clean and sanitary condition, free

from obstructions, hazards, debris, and trash at all times. a copy of the contractor certificate

of insurance shall be available at the work area.

9. The spreading of mud or debris or storage of material or equipment of any kind upon any

public roadway is strictly prohibited and violation shall be cause for immediate suspension of

the permit. The project engineer and/or City may at any time order immediate clean up and

stoppage of work to accomplish clean-up.

Exhibit B

General Notes - April 2019 Page 2 of 4

10. Dust shall be controlled within the development during construction and shall not be

permitted to drift onto adjacent properties.

11. Contractor shall monitor the hauling of debris to ensure that all spillage from trucks is

promptly and completely removed and cleaned up.

12. The contractor shall control traffic through the project site in conformance with the latest

edition of "Manual on Uniform Traffic Control Devices" (MUTCD), "Oregon Supplements",

and City requirements. The contractor shall at all times maintain local access for owners

near the project site. The contractor shall provide a project-specific traffic control plan,

approved by the City, and available on the project site.

13. The contractor is responsible for provision of timely notification of traffic flow disruptions to

area-wide emergency services and the school district. The contractor shall maintain and

coordinate access to all affected properties.

14. Traffic control devices, flag persons, etc., shall be in place prior to initiation of construction

work and shall be effectively maintained. A traffic control plan shall be submitted to the City

for approval prior to any work within existing right-of-way.

15. Public roadways shall not be closed to traffic, at any time, without having first obtained a

street closure permit from the City.

16. Compaction testing is the responsibility of the developer. Provide the City with copies of the

test results on base rock and asphalt. Schedule proof rolls with the City at least 48 hours in

advance.

17. Contractor must verify all existing utilities for both vertical elevation and horizontal location

prior to start of work (pothole before digging if necessary). Contractor shall coordinate the

work with applicable agencies.

18. Trenches within rights-of-way, pavement, or concrete areas shall be backfilled with

approved crushed rock (Drawing No. 205) or CDF (Drawing No. 210), and as specified on

these plans. Trenches outside of the paved or concrete areas may be backfilled with native

Class A material per Drawing No. 205.

19. The contractor shall maintain benchmarks, property corners, and monuments. If such points

are disturbed or destroyed by construction activities, they shall be replaced in accordance

with ORS 209 by employing a professional land surveyor to reset property corners and other

such monuments.

20. The contractor shall notify the City forty-eight (48) hours prior to any proof roll, concrete form

inspection, and paving.

21. Property disturbed by construction activity shall be repaired. Grass, shrubs, flowers, bark

dust, existing signs, pavement markings, mailboxes, etc. disturbed by construction activity

shall be re-established, reinstalled or replaced, with like kind and material.

22. Effective drainage control is required. Drainage shall be controlled within the site and shall

be routed so that adjacent private property, public property, and the receiving system are

not adversely impacted. The project engineer and/or City may at any time order corrective

action and stoppage of work to accomplish effective drainage control.

Exhibit B

General Notes - April 2019 Page 3 of 4

23. Trenches will not be allowed to remain open overnight. A temporary hard-surface patch (hot

mix base paving) or steel plates secured with pins and cold mix ramps shall be placed on

trenches within existing roadways at the end of each day's work. No trench, on-site or off-

site, shall be left at any time in an unsafe condition. The contractor is responsible and liable

for hazards or damage resulting from the prosecution of the work.

24. Work provided for under the permit shall include repair of existing facilities (roads, ditches,

etc.) as may be necessary, in the City's opinion, to overcome deterioration or damage which

occurred in conjunction with the work authorized by the permit. Corrective work shall be

done at the contractor's expense.

25. Power, telephone, gas, and cable television trenching and conduits are to be installed per

utility company requirements. Verify with utility company for size and type of conduit prior to

construction.

26. Unidentified utilities shall not be disrupted or cut until utility company has approved the cut

or disruption.

27. All facilities shall be maintained in-place by the contractor unless otherwise shown or

directed. Contractor shall take all precautions necessary to support, maintain, or otherwise

protect existing utilities and other facilities at all times during construction. Contractor to

leave existing facilities in an equal or better-than-original condition.

28. Notify the utility company immediately of all utilities exposed. Utilities or interfering portions

of utilities that are abandoned in place shall be removed by the contractor to the extent

necessary to accomplish the work.

29. The contractor shall remove and dispose of trees, stumps, brush, roots, topsoil, and other

material in the new public right-of-way, under the new roadway and where indicated on the

plans. Material shall be disposed of in such a manner as to meet all applicable regulations.

30. If ground water springs are encountered during construction, the contractor shall take

measures to ensure that the water is not conveyed through utility trenches, and the natural

flow path of the spring is altered as little as practicable.

31. Sawcut straight match lines where existing pavement meets new pavement. Sand and seal

joint (typical).

32. Contractor shall follow OSHA requirements.

33. All trenches shall be properly shored and braced to prevent caving.

34. Where trench excavation requires removal of pcc curbs and/or sidewalks, the curbs and/or

sidewalks shall be sawcut and removed at a tooled joint unless otherwise authorized by the

owner's representative. The sawcut lines shown on the drawings are schematic and not

intended to show the exact alignment of such cuts.

35. The contractor shall provide all the "means and methods" necessary to complete the project

in accordance with the approved drawings and documents. The contractor is responsible for

all repairs and damage to all items that are to remain. All repairs shall use new material.

Repairs shall restore the damaged item to the pre-existing condition or better. Such repairs

shall be performed at the contractor's sole expense.

Exhibit B

General Notes - April 2019 Page 4 of 4

36. Contractor is responsible for site job safety, which shall include but not be limited to the

installation and maintenance of barriers, fencing, and other appropriate safety items

necessary to protect the public from areas of construction and construction activity.

37. Settlement or cracking of finished surfaces within the warranty period shall be considered to

be a failure of the subgrade, and repaired in a manner acceptable to and at no cost to the

City or developer.

38. Prior to final project acceptance, the contractor shall clean the work site and adjacent areas

of any debris, discarded asphaltic concrete material, or other items deposited by the

contractor's personnel during the performance of this contract.

Exhibit C 

Engineering Plan Submittal Checklist – April 2019 Page 1 of 3

Engineering Division Plan Submittal Checklist

Based upon the City’s Engineering Design Manual, most recent edition

Land Use File No. ____________

Project Name _______________________________________

1. General

 Submit Construction Plans Electronic Plans via email to plans-

[email protected]

 Construction plans are 95% complete

 Plan Review Deposit

 Plans are stamped by a professional engineer, registered in the State of Oregon

 Submittals and supporting documentation

o Transmittal Memo

o Engineer’s Cost Estimate

o Signed & Stamped Plan Submittal Checklist

o Geotechnical Engineering Report

o Wall Design

o Turning Exhibits for Garbage Trucks, Emergency Vehicles and Delivery

Trucks

o Traffic Study

o Storm Drainage Report

2. Construction Drawing Format

 Plan sheets are 22” x 34” (ANSI D) or 24” x 36” (ARCH D).

 A vicinity map is located on the Title Sheet

 The City’s standard General Notes shall be included in the Construction Notes

for each project. See Exhibit B of the Engineering Design Manual.

 A north arrow shall be shown on each plan view sheet. The orientation of the

north arrow is up or to the right on the plan sheet, with stationing from left to right.

 The scale shall be 1”= 2’, 4’, 5’ or 10’ vertically and 1”= 10’, 20’, 30’, 40’ or 50’

horizontally for all drawings except structural drawings.

 Letter size shall not be smaller than 0.10 of an inch high.

 All detail drawings, including standard drawings, shall be included in the

drawings.

 A title block is provided on each sheet

Exhibit C 

Engineering Plan Submittal Checklist – April 2019 Page 2 of 3

3. Required Plan Sheets

 Title Sheet

 Existing Conditions

 Grading and Erosion Control Plan - minimum 2-foot contour intervals

 Composite Utility Plan

 Sanitary Sewer, Storm Sewer and Water Plan and Profile

 Street Plan and Profile – Provide a stand-alone street plan and profile, not

combined with any other utility

 Signage and Striping Plan –prepared by a professional engineer registered in the

State of Oregon.

 Pathways – provide a separate plan and profile for each pathway

 PGE Approved Street Lighting design

 Retaining Walls – walls greater than four feet in height shall be designed by a

registered professional engineer.

 Curb Returns - each curb return shall be individually designed and shall include a

profile and plan view

 Site Plan – provide for private site development

 City Standard Drawings - shall be full size

 Tree Removal Plan

 Landscape Plan

4. Happy Valley Specific Design Elements

 All utilities associated with development shall be place underground.

 Provide an 8’ Public Utility Easement (PUE) behind the right-of-way

 All excavations within the public right-of-way shall be backfilled with crushed rock

or Control Density Fill (CDF). Temporary trench patches shall be hot mix

asphalt.

 Weep holes through the curb are not allowed in the City of Happy Valley

 Detention/Water Quality Pond Fencing - Fencing around storm water detention

facilities shall be six-foot tall, black, vinyl-coated chain link

5. Required Approvals, Submittals and Permits

 Water Environment Services (WES) – Storm and Sanitary Sewer

 Sunrise Water Authority (SWA) – Domestic Water

 Clackamas Fire District #1

 Planning Division

Exhibit C 

Engineering Plan Submittal Checklist – April 2019 Page 3 of 3

 DEQ NPDES 1200C Permit

 Engineering Plan Review Fees and Performance Guarantees

 PGE Street Lighting

 Engineering Services Agreement

 USPS Mode of Delivery Agreement

 Geotechnical Engineer of Record if necessary

 Clackamas County Department of Transportation & Development (DTD)

 Private Plumbing Permit from the Building Division if necessary

_________________________________

Engineer of Record Signature

_________________________________

Date

Note: The City’s Engineering Design and Standard Details Manual (Design Manual)

can be found on the City’s website at the link below:

https://www.happyvalleyor.gov/business/engineering-division/design-manual-details/

Exhibit D

Material Testing Requirements – April 2019 Page 1 of 1

CityofHappyValley

MaterialTestingRequirements

(ModeledafterODOTManualofFieldTestProcedures)

Earthwork Embankment Compaction

< 3,500 cy – 1 test/500 cy

> 3,500 cy – 1 test/3,00 cy

Subgrade Stabilization – Visual

Trench Foundation Stabilization Compaction – 1 nuclear test/300 LF of trench

Trench Pipe Zone Compaction - 1 nuclear test/100 LF of trench/every 2’ of fill

Trench Backfill Compaction - 1 nuclear test/100 LF of trench/every 2’ of fill

Commercial Grade Concrete – 1 set of cylinders/20 cy (max. 2/day)

City Standard Curb & Gutter – one test per 500 LF

5 ft wide sidewalk – one test per 500 LF

Asphalt Trench Resurfacing – 1 nuclear test/100 LF of trench for each lift of asphalt

Aggregate Base – Visual (City Standard – Visual Proofroll)

Asphalt Compaction – 10 nuclear tests/day of paving

1” Thin Lift Overlays – Statistical Acceptance per ODOT Chapter 00745