04-0180 CIVIL STEP 3~
SECTION 0221 S- SUBGRADE PREPARATIOIV
PART 1- GENERAL
~ .O 1 DESCRIPTION
A. Work of this Section is bound by the Conditions of the Contract and Division 1
Specifications sections, bound herein, in addition to this Specifica6on and
accompanying Ihawings.
1.02 WORK INCLUDED
A. All subgrade prepazation as specified herein or otherwise required for installation of
new work shown or specified.
B. In general, work specificd herein shall be included in the Bid. Work under this
section includes all labor, supervision, equipment, tools, materials, service and
incidentals necessary for subgrade preparation.
1.03 RELATED SECTIONS
A. Secrion 02300 - Earthwork
B. Section 02315 - Trenching, Backfilling and Compaction for Utilities
C. Section 02740 - Asphalt Concrete Pavement
D. Section 02750 - Portland Cement Concrete Pavement, Curbs and Sidewalks
E. Section 02721- Catch Basins and Inlets
F. Section 02630 - Stormwater System
1.04 QUALITY ASSURANCE
A. PERMITS & LICENSES
1. Obtain and pay for any required permits.
2. Contractor to be licensed for any work in the locality of the project.
B. STANDARD SPECIFICATIONS
1. The work under this section shall be governed by the 2004 version of the WSDOT
"Standazd Specifications" for Road, Bridge, and Municipal Construction
published by the Washington State Department of Transportation (WSDOT).
2. All references in the Standard Specifications to measurement and payment shall
be deleted from consideration, and the terms agreed to in the Contract substituted
therefore.
1.05 JOB CONDITIONS
A. CONDITION OF SITE PRIOR TO CONSTRUCTION
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[ym,s~ 02215-1 SUBGRADE PREPARATION
02215-1
1. Accept premises on an"as-is" condition; Owner assumes no responsibility for site
condition now, at time of bidding, nor thereafter.
2. Assurne all risks from damage or loss to premises by means of fire, theft, and all
other causes.
3. Damage or loss resulting from any cause to building, persons and/or property
shall not relieve Contractor from his abligation to complete all work under the
contract.
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B. PROTECTION
l. General:
a. Conduct all operations in such a manner as to prevent damage to existing
structures and surfaces and adjacent property. Keep free of damage those
portions of existing site buildings and appurtenances that are to remain.
Repair any damage incurred because of the work of this section to the
satisfaction of the Owner.
2. Reference benchmarks and monuments:
a. Maintain benchmarks, monuments, and ail other reference points.
b. If disturbed or destroyed, monuments and benchmarks sha11 be replaced by a
registered Land Surveyor or Professional Engineer.
3. Utilities:
a. Where existing utilities exist at site, either overhead or underground, take care
not to cause damage thereto; keep building drains, street dra.ins and sewers
open, for free drainage at all times.
b. The Contractor shall be responsible for, and shall immediately repair, all
damage to existing sewers, watermains, and building service connections to
the same, operated by the Owner, which is caused by the construction work;
repair such damage at no cost to Owner in manner approved by the applicable
utility. Contractor sha11 contact the underground utility locating service at 1-
800-424-SS55 a minimum of 48 hours prior to construction.
4. Landscape plantings to remain: Save and protect trees as designated on
applicable Architectural, Landscape and Civil Drawings or as designated in the
field.
5. Adjacent buildings: Provide protection required by the General Conditions. Such
protection includes occupants of said adjacent buildings, visitors, and passers-by
from damage, injtuy and discomfort caused by dust.
6. Street Blockage: Coordinate with the Owner should blockage of any streets by
contemplated due to site prep work of this project; provide all necessary signs,
lights and barricades required for any said blockage.
7. Traffic control Plan: Contractor shall provide a traffic control plan for any work
that will interfere with the normal traffic flow. Contractor shall refer to WSDOT
Standard Plans Section K for traffic control plans.
1.06 llEFINITIONS
A. Optimum Moisture Content:
1. Ratio, in percent, of as-compacted field dry density to laboratory m~imum dry
density, as determined in accordance with ASTM~D 1557-91.
~~ 02215-2 SUBGRADE PREPARATION
022? 5-2
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2. Apply corrections for oversize material to either as-compacted field dry density or
maximum dry density, as determined by the Engin~er.
B. Prepared Ground Surface: Ground surface after completion of clearing and grubbing,
saalping of sod, stxipping of topsoil, excavation to grade, and scarification and
compaction af Subgrade.
C. Relative Compaction: As defined in Section 02315, Trenching, Backfilling and
Compaction for Utilities.
D. Relative Density: As defined in Section 02315, Trenching, Backfilling and
Compaction for Utilities.
E. Subgrade: Layer of existing soil aft~r completion of clearing, grubbing, scalping of
topsotl pr~or to placement of f ll, roadway structure.
F. Proof-Rolling: Testing of Subgrade by compaction effort to identify areas that wi11
not support the future loading without excessive settlement.
G. Dry Subgrade: Subgrade for which the in-place moisture content is more than 5
percent below the optimum moisture content.
H. Wet Subgrade: Subgrade for which the in-place moisture content is more than 10
percent above the optimum moisture content.
I. Unsuitable Material: Material which, in the judgment of the Owner's representa.tive,
is not suitable to be used for the int~nded purpose.
1.07 SEQUENCING AND SCHEDULiNG
A. Complete applicable work specified in Sections 02220, Site Demolition Clearing and
Preparation; and Section 02300, Earthwork, prior to Subgrade Prepara~ion.
1.08 QUALITY ASSURt1NCE
A. Notify Engineer when subgrade is ready for compaction.or Proof-Rolling, or
whenever compaction of Proof Rol~ing is resumed after a period of extended
inactivity.
1.09 CONSTRUCTION SURVEY CONTROL
A. The Contra.ctor shall supply construction survey control for approval of the Engineer
prior to construction. ~e rontractor shall coordinat~ to obtain the Engineer's
inspectian Qf a.~1 fo.~mwork graaes and a~tgnment at ~east 24 hours prior to the
placement of concrete at each location where concrete is to be placed.
1.10 PPOPERTY LINE STAKES
A. The Contractor shall provide properiy stakes every 200 feet along all property lines as
rec~uir~d by the City of Yelm.
PART 2 - PR~ODTJCTS (Not Used)
PAIZT 3 - EXECUTION
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[yrms~ 02295-3 SUBGRADE PREPARATION
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3.Q1 GENERAL
A. Keep Subgrade free of water, debris, and. foreign matter during compaction or Proof-
Rolling.
B. Bring Subgrade to proger grade and cross-sectian and uniformly compact surface.
l.. Do not use sections of Prepared Ground Surface as haul roads. Protect prepazed
Subgrade from tr~c.
2. Maintained Prepared Ground Surface in f nished condition until next course is
placed.
3.02 COMPACTION
A. Under Earth fill: Compact the upper 6 inches to mi.nimum o€ 90 percent RelaYave
Compaction as detsrmined in accordance with ASTM D 1557-91.
B. Under Pavement Structure: Floor Slabs 4n Grade, or Granular Fill Under Structures:
Compact .the upper 12 inches ta minimum of 95 percent Relative Compaction as
determined in accordance with ASTM D l 553-91.
3.03 MOIST'URE CONDITIONING
A. Dry Subgrade: Add water, then mi~c to make moisture content uniform t~~roughout.
~. Wet Subgrade: AeXate material by hlading, discing, harrowing, or other methods, to
hastsn drying pracess.
3.04 CORRECTION
A. Soft or Loose Subgrade:
1. Adjust moisture content and recompact, or
2. Over-excavate as specified in Section 02300 Earthwork, and replace with suitable
material from excavation, as specified in Section 02315, Trench Backfilling and
Compaction.
END OF SEC'TION 0221 S
[yrms] 02295-4 SUBGRADE PREPARATION
02215-~
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1 SECTION 02220 - SIT~ DEMOLI7'ION, CLF.ARING & P~~ARATION
PART 1- GENERAL
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1.01 DESCRIPTION
A. Work of this Section is bound by the Conditions of the Contract and Division 1
Specifications sections, bound herein, in addition to this Specification and
accompanying Drawings.
1.02 WORK INCLUDED
A. Work under this Section includes all labor, supervision, equipment, tools, materials,
services and incidentals necessary for the following:
1. Saw cutting and removing asphalt and concrete paving, steps and curbing;
abandoning, plugging and removing existing utilities; fences; bicycle racks; play
equipment; landscape plants and bridge; clearing and grubbing; and removing
trees as shown on the plans.
B. Demolition: All onsite and offsite demolition and/or preparation as specified herein
or otherwise required for installation of new work shown or specified, excepting
those items shown and noted on Drawings as existing and to remain.
G Site Clearing and Preparation: All site clearing and preparation work including
clearing and grubhing of vegetation, removal of trees from designated areas, removal
and disposal of such materials from below the ground surface, removal of existing
asphalt and concrete, identify, disconnect, cap and remove utilities; protect from harm
any trees or other objects selected to remain; protect from harm offsite trees and
surrounding properties.
1.03 RELATED SECTIONS
A. Section 02215 - Subgrade Preparation
B. Section 02300 - Earthwork
C. Section 42315 - Trenching, Backfilling and Compaction for Utilities
D. Section 02740 - Asphalt Concretc Pavement
E. Section 02750 - Portland Cement Concrete Pavement, Curbs and Sidewalks
F. Section 02721- Catch Basins and Inlets
G. Section 02630 - Stormwater System
1.04 QUALITY ASSURANCE
A. PERMITS & LICENSES
1. Obtain and pay for any required perm.its. ~
2. Contractor shall be licensed for any work required under this item.
B. STANDARD SPECIFICATIONS
[yrms~ 02220-1 SITE DEMOLITION, CLEAR/NG & PREPARATION 02220-1
1. The work under this section sha11 be governed by the 2004 version of the WSDOT
"Standard Specification" for Road, Bridge, and Municipal Construction published
by the Washington State Department of Transportation (WSDOT).
2. All references in the Standaxd Specifications to measurement and payment shall
be deleted from consideration, and the terms agreed to in the Contract substituted
therefore.
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1.05 JOB CONDITIONS
A. CONDITION OF SITE PRIOR TO CONSTRUCTION
l. Accept premises on an "as-is" condition; Owner assumes no responsibility for site
condition now, at time of bidding, nor thereafter.
2. Assume all risks from damage or loss to premises by means of fire, theft, and all
other causes.
3. Damage or loss resulting from any cause to buildings, persons and/or property
shall not relieve Contractor from lus obligation to complete all work under the
contract.
B. PROTECTION
1. General: Conduct all operations in such a manner as to prevent damage to trees
that are to remain, surfaces, and adjacent property. Keep free of damage those
portions of existing site appurtenances that are to remain or to be removed for re-
use by owner. Repair any damage incurred because of the work of this section to
the sadsfaction of the Owner.
2. Reference benchmarks and monuments:
a. Maintain benchmarks, monuments, and all other reference points.
b. If disturbed or destroyed, monuments and benchmarks shall be replaced by a
registered Land Surveyor or Professional Engineer.
3. Utilities:
a. Where existing utilities are located at the site, either overhead or underground,
take care not to cause damage thereto; keep building drains, street drains and
sewers open, for free drainage at all times.
b. The Contractor shall be responsible for, and shall immediately repair, all
damage to existing sewers, watermains, and building service connections to
the same, operated by the Owner, which is caused by the construction work;
repair such damage at no cost to Owner in manner approved by the applicable
utility. Contractor sha11 contact the underground utility locating service at 1-
500-424-5555 a minimum of 48 hours prior to construction.
4. Landscape plantings to remain: Save and protect trees as designated on
applicable Architectural, Landscape and Civil Drawings or as designated in the
field.
5. Adjacent buildings: Provide protection required by the General Conditions. Such
protection i.ncludes occupants of said adjacent buildings, visitors, and passers-by
from damage, injury and discomfort caused by dust.
6. Street blockage: Coordinate with the Owner should blockage of any streets be
contemplated due to site prep work of this project; provide all necessary signs,
lights and barricades required for any such blockage.
[yrms] 02220-2 SITE DEMOLITION, CLEARING & PREPARATION 02220-2
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7. Traffic control plan: Contractor sha11 p~ovide a traffic control plan for any work
that will interfere with the normal traffic flow. Contra~tor sha11 refer to WSDOT
Standard Plans Section K for traffic control plans.
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1.06 REFERENCE BENCHIVIARi~S, MONUMENTS & PROPERTY CORNERS
A. Maintain benchmarks, monuments, property corners, and all other reference points.
If disturbed or destroyed, bench marks, monurnents and properry carners shall be
replaced Uy a registered Land Surveyor or Professional Engineer at the sole expense
of the Contractor.
1.07 PPOPERTY LINE STAKES
A. The Contractor shall provide property stakes every 200 feet along all property lines as
required by the City of Ye~r~.
1'AR'T 2 - I'RODiJCTS (Not Used)
~~RT 3 - EXECUT'ION
3.01 DEMOLITION
A. General: Breakup, remove, haui and dispose of all e~sting asp$a1t and concrete
pavement, concrete steps and retaining walls. Disconnect, cap and remove existing
utilities.
B. Asphalt removal: Contractor shall saw cut the existing asphalt to a"neat line" prior
to asphalt removal. All asphalt shall be removed from the site and disposed of in a~
approved manner (i.e. recycling plant, permitted landfill etc.).
C. Concrete removal: Contractor sha11 saw cut the existing cement concrete to a"neat
line" prior to concrete removal. All cement concrete shall be removed from the site
and disposed of in an approved manner (i.e. recycling plant, permitted landfill etc.).
3.02 SITE CLEARING AND PREPARATION
A. Provide and conform to a11 pernvts, approvals and necessary agency requirements for
site work indicated on Drawings and specified herein.
B. Do all clearing and grubbing work required for the completion of new work shown on
drawi.ngs and/or specified.
C. Remove, haul and dispose of all debris and materials on site except those items
directed to remain.
D. As noted on the plans and details saw or cut materials and debris so that only those
portions noted are removed.
E. All debris as approved by the Engi.neer, shall become the property of the Contractor
and removed from the site. ~
[yrms] 02220-3 SITE DEMOLITION, CLEARlNG & PREPARATION Q2220-3
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3.03 CLEARING & GRUBBING
A. General:
l. Clea.r and grub completely a11 materials indicated to be cleared, plus all grasses,
shrubs, trees, organic topsoil, asphalt and concrete pavement and other debris
within areas required for the new building construction and related structures,
utilities, walk, parking areas, planting areas, including areas of site to be improved
or altered by cut ancUor fill work and a11 other improvements within the limits
shown on dra.wings and to a depth of at least 12 inches.
2. Remove roots of removed trees and shrubs to 4 8 inches minimum below new
work under buildings and paved areas, to 6 inches minimum below finish grade in
all other areas.
3. All materials cleared and grubbed under work of this Section sha11 be disposed of
off-site at a contractor provide site at no cost to the Owner.
B. Stripping Tapsoil:
1. After clearing and grubbing is completed, strip all organic topsoil below the
existing grade of all areas ta be cleared and grubbed for new building, paving,
landscape, drainage, and site utility work.
2. Keep topsoil reasonably free of subsoil, clay lumps, stones, weeds, roots and other
foreign materials. Strip topsoil to whatever depths encountered, to prevent
mixing with underlying subsoil.
C. Topsoil Stock~iling:
1. Stockpile existing topsoil in separate piles in designated onsite stockpile area(s) or
as otherwise directed by the Engineer, for re-use and re-spreading.
2, Construct topsoii piles to a11ow fre~ drainage of surface water. When required
due ta dry, wet and windy weather conditions, cover topsoil to prevent blowing
dust or erosion and migration of sediments.
3.04 UTILI`TIES
A. Terminate and cap utilities as required for new work, conforming to local, state and
servicing utility companies' requi.rements.
B. Ta.ke care not to cause damage to any other existing utilities; keep all other utilities
intact and in continuous operation.
C. If damaged, rep~ir su~h damage at ~o cost to ~Jume~ in manner approvec~ by the
applicable utility, refer to subparagraph 1.03 B.3 above and conform to requirement
therein.
3.05 DISPOSAL OF DEIVIOLISI3ED, CLEARED & GRUBBED MATERIAL
A. Remove a11 non-usable materials and debris from site, streets and walks as work
proceeds, excepting those material/items indicated on 33rawings andior otherwise
selected by the Owner to be retained by Owner or reused in the new work.
B. Remove from site all other cleared and grubbed material not selected to be retained
by Owner. Let no non-usable material accumulate at. site, except where burning is
permitted, burn same on site; conform to a11 laws and ordinances relating to fires;
obtain and pay for fire and air pollution permits and remove ash residue from site.
[ymis) 02220-4 SlTE DEMOLIT/0N, CLEARIIVG & PREPARATION 02220-4
Haul a11 said materials/debris to an approved o~f'r-site disposal site as selected by
Contractor, at Contractor's expense.
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3.06 UNAUTHORI2ED REMOVAL OF TIMBER
A. Contractor shall remove only timber that has bee~ designated to be removed. Timber
removed without the authorizatian of the Engineer shall be compensated at 300% of
the marketable value of the unauthorized removal. In addition, the Contractor shall
plant tl7ree new irees of the same type for every unauthorized removal of an existing
~re~ at a location agreed upon by the Owner.
3.07 MAINTAIN TRAFFIC ACCESS
B. Contractor shall maintain access over and through the various work areas as identified
on the Contract Plans. Lane closures and traffic diversions sha11 be per the latest
edition of the MUTCD (Mar~ual of Uniform Traffic Con~rol Devices), Contract Plans
shall be submitted to the engineer for approval prior to any existing traffic
modifications.
3.0$ SURFACE RESTORA.TION
A. Ail disturbed areas that are seeded sha~l be level~ free of any s~trface rocks px~iox to
application of any grass seed. Disturbed areas shall be maintainedlrepaired by the
contractor until. grassed areas are established to the satisfaction of the Owner or
Engineer.
B. A11 disturbed areas that are paved shall be replaced with an acceptable pavement
section as identified on the plans or approved by the Engineer. Asphalt pavement
restoration shall conform to ~echon 0275Q - Portland Cement Cancrete Pavement.
C. All disturbed areas that conta.in cement pavement, sidewalk, driveway, or curb
sections sha11 be replaced with an acceptable sectian as identified on the plans or
approved by the Engineer. Cement concrete pavement, sidewalk, driveway, and curb
restoration shall conform to Section 02750 - Portland Cement Concrete Pavement.
3.09 DEMOLITION REQUIREMEN'~S
A. Conduct demolition to minimize interference with adjacent property owners and
vehicular traffic.
B. Cease opera.tions immediately ~f adjacent structures appear to be in danger. Notify
owner and do not resume operations until directed.
C. Conduct operations with the mirumum interference to public and private accesses.
D, Maintain protected egress and access at a11 times.
E. Obtain written permission from adjacent property owners when d~molition equipment
wiil tra~verse, infringe upon or liznit access to their property.
F. Spririkle work site with water to minimize dust. Provide hoses, water and cannections
for this purpose,
3.10 DEMOLITION
[yrms) 0222Q-5 SITE DEMOLITION, CLEARING & PREPARA.T/OIV 02220-5
1 A. Disconnect and remove utilities within demolition area.
2 B. Remove foundation wa11s and footings to a miuimum of four feet below finished
3 grade.
4 C. Break up concrete slabs oi1 grade and remove to permit natural moisture drainage.
5 D. Remove tanks, components and piping from site loca.ted within de~nolition area.
6 E. Backfill areas excavated caused as result of demolition.
7 F. Rou,gh grade and compact areas affected by demalition to maintain site grades and
8 contours.
9 G. Remove demolished materials from site.
10 H. Do not burn or bury any materials on site.
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12 END~~'SEC~'I01i~02220
(yrms] 02220-6 SITE DEMOLITION, CLEARING & PREPARATION 02220-6
1 ~'EC'TI~N 02300 - ~~'~fN'O~
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4 PAR'I' 1- GENERAL
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6 1.01 DESCRIPTION
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A. Work of this Section is bound by the Conditions of the Contract and Division 1
Specifications sections, bound herein, in addition to this Specifica~ion and
accompanying Drawings.
$. RELATED SECTIONS
1. Section 02215 - Subgrade Preparation
2. Section 0231 S- Trenching, Backfilling and Compaction for Utilities
3. Section 02630 - Stormwater System
4. Section {12721 -~atch Basir~s ar~d Inlets
5. Section 02740 - Asphalt Concrete Pavement
6. Section 02750 - Portland Cement Concrete Pavement, Curbs, and Sidewallcs
1.02 WORK INCLUDED
A. Work under this section includ~s aIl labor, supervision, equipment, tools, materials,
service and incidentals necessary for the completion of the following:
1. All excavation as specified herein or otherwise required for installation of new
work shown or specified.
2. General filling and contour~ng of site surfaces for paving, structures, lawn and
landscaping.
3. Structural filling.
4. Backfilling of walls.
5. RQUgh and fir~ish grading of cut and fill surfaces.
6. Preparation of excavated surfaces for pavi.ng, structures, lawn and landscaping.
7. Proof rolling and compactioz~ of fill.
8 Inspection and testing.
B. Thcre is no guarante:, the pxoject site earkhwork quantities will balance. The
contractor will be required to import or export as required to achieve the design
grades as part the bid price (unknown unsuita.ble soils not with standing), based on
the site survey attached soils report and grading plans.
1.03 QUALITY ASSURANCE
A. PERMITS & LICENSES
1. Obtain and pay for any required permits.
2. Contractor sha11 be licensed for any work required under this item.
B. STANDARD SPECIFICATTONS
1. The work under this section sha11 be govemed by the most current version of the
WSDOT "Standard Specifications" for Road, Bridge, and Municipal Construction
published by the VVashington State Department of Transportation (WSDOT).
[yrms] 02300-1 EARTHWORK 02300-1
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2. All references in ~hhe Standaxd Specifications to measurement and payment shall
he deleted from cflnsideratian, and the terms agreed to in the Contract substituted
therefore.
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1.04 CONSTRUCTION STAKING
A. The Contractor sha11 supply a11 conshuction survey control and stakeout for the
approval of the Engineer prior to construction. The alignment of water mains, storm
sewers and sanitary sewers and locations of components to be installed sk~all be as
indicated. on the Contract Plar~s. Ait survey control work shall be done by a registered
Land Surveyor or Professional Engineer.
B. Should construction staking be lost as a result of the Contractor's operations or as a
result vandalism, the Contractor sha11 replace the staking at the Contractor's soie
expense.
1.05 JOB CONDITIQNS
A. CONDITION OF SITE PRIOR TO CONSTRUCT~ON
1. Accept premises on an "as-is" condition; Owner assumes no respansibility for site
condition now, at time of bidding, nor thereafter.
2. Assume all risks from damage or loss to premises by means of fire, theft, and a11
other causes.
3. Damage or loss resuiting fram any cause to buiidings, persons and/or property
sha11 not relieve Contractor from his obligation to complete all work under the
contract.
B. PROTECTION
1. General: Conduct all operations in such a manner as to prevent damage to trees
that are to remain, surfaces, and adjacent property. Keep free of damage those
portions of existing site appurtenances that are to remain or to be removed for re-
use by owner. Repair any damage incurred hecause of the work af this section to
the satisfaction of the Owner.
2. Reference benchmarks and monuments:
a. Maintain benchmarks, monuments, and a11 other reference points.
b. If disturbed or destroyed, monuments and benchmarks shall be replaced by a
registered L~.nd Surveyor or Professional Engin~r.
3. Utilities:
a. Where existing utilities are located at the site, either overhead or underground,
ta.ke care not to cause damage thereto; keep building drains, street drains and
sewers open, for free drainage at a11 times.
b. The Contractor shall be responsible for, and shall immediately repair, all
datnage to existing sewers, watermains, and building service connections to
the same, operated by the 4wner, which is caused by the construction work;
repair such damage at no cost to Owner in manner approved by the applicable
utility. Contractor shall contact the underground utility locating service at 1-
800-424-SSSS a minimum of 48 hours prior to conshuction.
4. Landscape plantings to remain: Save and protect trees as designated on
applicable Architectural, Landsca.~e and Civil Dra.wings or as designated in the
~ field.
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5. 1~djacent buildings: Provide protection required by ~1ne General Conditions. Such
protection includes occupants of said adjacent buildings, visitors, and passers-by
from damage, injury and discomfort caused by dust.
6. Street blockage: Coordinate with the Owner should blocka.ge of any streets be
contemplated due to site prep work of this project; provide a11 necessary signs,
~ights and barrica.des required for any such blockage.
7. Tr~c control plan: Contractor shall provide a tra~c control pian for any work
that will interfere with the normal tr~c flow. Con~ractor shall refer to WSDOT
Standard Plans Section K for tcaf~ic control plans.
1.06 REFERENCE BENCHMARKS, MONUMENTS & PROPERTY CORNERS
A. Maintain benchmarks, monuments, property corners, and all other reference points.
If d.isturbed or destroyed, benchmazks, monuments and properly comers sha11 be
replaced by a registered Land Surveyor or Professional Engineer at the sole expense
of the Contractor.
I.Q7 SUBMITTALS
A, T'he Contractor shall submit an Excavation Plan detailing:
1. Methods and sequencing of excavation.
2. Proposed locations of stockpiled excavated material.
3. Proposed onsite and offsite spoil disposal sites,
1.08 WEATHER LIMITATIONS
A. Material excavated during inclement weather sha11 not be used as fill or backfill until
after material drains and dries sufficiently for praper compaction in accordance with
the Standard Specifications.
1.09 SEQUENCING AND SCHEDULING
A. Clearing; Grubbing, and Stripping: Complete applicable Work specified in Section
02220, Site Clearing, Demolition And Preparation, prior to excavating.
1.10 BASE TOPOGRAPHIC ADVISORY
A. Contractor is advised to verify site conditions prior to bidding. Attached is a copy of a
soils report for this project.
1.11 PPOPERTY LINE STAKES
A. The Contractor shall provide properry stakes evezy 200 feet along a11 properly lines as
required by the City of Yelm.
PA12T 2 - PItODUCTS
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2.01 GRAVEL BACKFILL FOR WALLS
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A. Cra.vel Backfill for Walls sha11 conform to the requirements of Section 9-03.12(2) of
the Standard Specifications.
2A2 GRAVEL BACKFILL FOR F~UNDATIONS - CLASS B
A. Gravel Backfill for Foundations - Class B shall conform to Section 9-03.12(1)B of
the Standard Specifications and shall be used as structural fill beneath building slabs,
and exterior stairways when placed during the months between April 15 and ~ctober
15. Gravel backfill for founda.tions placed during the period between October 16 and
April l4 shall conform to Section 2.41 Gravel Backfil~ for VJalls.
2.03 BALLAST
A. Ballast shall conform to the requirements of Section 9-03:9(1) of the Standard
Specifications.
2.04 CRUSHED SURFACE TOP COURSE
A. Crushed Surface Top Course shall conform to the requirement of Section 9-03.9(3) of
the Standard Specifications.
2.05 IMPORT AND ON-SITE SOILS FOR STRUCTURAL OR NATIVE FILL
A. Structwral Excavation and Fill sha11 conform to the requirement of Section 2-09 of the
Standard Specifications. No extra payment for import or export of soils.
PART 3 - EXECUTION
3.01 GENERAL
A. Excavate ta lines, grades, and dimensions shown and as necessary to accomplish
Work. Excavate to withi.n toierance of plus or minus 0.1 foot except where
dimensions or grades are shown or specified as maacimum or minimum. Alio~~v for
forms, working space, granular base, topsoil, and similar items, wherever applicable.
Trim to neat lines where concrete is to be deposited against earth.
B. Do not over-excavate without written authorization of Engineer.
C. Remove or protect abstructions as shown.
3.42 STRUCTURE EXCAVATION - CLASS B
A. Structure Excavation - Class A: shall be defined in accordance with Section 2-09.3(2)
of the Standard Specifications.
3.03 EMBANI~MENT AND CUT SLOPES
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A. Shape, trim, and finish cut slopes to conform with lines, grades, and cross sections
shown, with proper allowance for topsail or slope protection, where shown.
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B. Remove stones and rock that exceed 3 inch in diameter and that are loose and may
ra11 dozvn s~ope. Remove exposed roots from cut slopes.
C. Round tops of cut slopes in soil to not less than a 6-foot radius, proviaed suc~
rounding does not extend offsite or outside easements and right-of-ways, or adversely
impacts e~sting facilities, adjacent property, or completed work.
D. Embankment construction sha11 be performed in accordance with Section 2-03.3(14)
or the Standard Specifications.
3.04 SUBGR.ADE PREPARATION
A. All subgrade areas beneath structures, paving and wa11s shall be prepared in
accordance with Section 2-Ob of the Standard Specifications, with the follawing
modifications:
1. In paragraph 2-06.3(1)6 the wording "Compact subgrade to a depth of 6 inches."
shall be removed and replaced with "Compact subgrade to a depth of 12 inches."
2. In para.graph 2-06.3(2) the wording "The Contxactor sha11 compact t,he subgrade to
a depth of 6 inches to 95 percent standard density" shall be removed and replaced
with "The Contractor shall compact the subgrade to a depth of 12 inches to 98
percent standard density."
3.05 STOCKPILING EXCAVATED MATERIAL
A. Stockpile excavated material that is suitable for use as fill or bacicfill until material is
needed.
$. Post signs indicating proposed use of material stockpiled. Post signs that are readable
from all directions of approach to each stockpile. Signs should be cleazly worded. and
reada.ble by equipment operators from their normal seated position.
C. Confine stockpiles to within easements, right-of-way, and approved work areas. Do
not obstruct roads or streets.
D. Do not stockpile excavated material adjacent to trenches and other excavations unless
excavation side slopes and excavation support systems are designed, constructed, and
maintained for stockpile loads.
E. Do not stockpile excavated materials near ar over existing facilities, adjacent
property, or completed work, if weight of stockpiled material could induce excessive
settlement.
3.06 DISPOSAL OF SPOIL
A. Dispose of excavated materiats, which are ansu~rable or exceed quantity needed for
fill or backfill, offsite.
B. Dispose of debris resulting from removal of organic matter, trash, refuse, and junk as
specified in Section U222U, Site Clearing, Demolition and Prepara.tion, for clearing
and grubbing debris.
3.07 EMBANKMENT AND FILL
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2 A. Earth Embankment sha11 consist of fill place in lawn and landscape areas, sha11
3 consist of native material excavated onsite and sha11 be placed in accordance with
4 ~ection 2-033(14}B and compacted in aceordance with Section 2-03.3(14)C -
5 Method A of the Standard Specificatian.
6 B. Gravel Backfill for Walls sha11 be placed in accordance with Secfion 2-03.3(14)B and
7 cornpacted in accordance with Section 2-03.3(14)C - Method B of the Standard
8 Specification.
9 C. Ballast and Crushed Surface Top Course shall be placed and compacted in
10 accordance with Section 4-04 of the Standard Specifications.
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SECTION 0.~31 S- TRENCHING, ~AC%FILLING & COMPACTION FOdt ~ITILITIES
PART 1- GENERAL
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1.01 DESCRIPTION
A. Work of this Section is bound by th~e Conditions of the Contract and Division 1
Specifications sections, bound herein, in addition to this Specific,~tion and
accompanying Drawi.ngs.
B. RELATED SECTICINS
1, Section 02215 - Snbgrade preparation
2. Section 02220 - Site Demolition and Clearing & Preparation
3, Section 02300 - Earthwork
4, Section 02740 - Asphalt Concrete Pavement
5, Sectian 0275Q - Portland Cement Concrete Pavement, Curbs, ana Sidewa~ks
6, Section 02721 - Catch Basins and Txilets
7, Section 0263n - Stormwater System
1.02 WQRK INCLUDED
A. Work under this Section includes a11 labor, supervision, equipment, tools materials,
services and incidenttals necessary for trenching, bedding, backfilling, compaction and
dewat~ring for water system, sanitary sewer system, stormwater system, wa11 block
systems, and the associated appurtenances.
i.03' Qt~ALITY ASSURANCE
A. PERM[TS & LICENSES
1, Obtain and pay for any required permits.
2. Contractor shatl be licensed for any work required under this item.
B. STANDARD SPECIFICATIONS
1. The work wnder this section shall be gavemed by the most current version of the
WSDOT "Standard Specifications" for Road, Bridge, and Municipal Cpnstruction
published by the Washington State Department of Transportation (WSDOT~.
2, All references in the Standard Specifications to measurement and payment shall
be deleted from consideration, and the terms agreed to in the Contract substituted
therefore.
1.Q4
STAKING
A. The Contractor shall supply a.[i construction survey control and sta~ceout for the
approval of the Engineer prior to construction. The alignment of water mains, storm
sewers and sanitary sewers and locations of components to be installed sha11 be as
ind.icated on the Contract Plans. All survey control work shall be done by a registered
Land Surveyor or Professional Engi.neer.
[ym,s) 02395-1 TRENCH/NG, BACKFtLLlNG & COMPACTION FOR UTILITIES 02315-1
B. Should construction staking be lost as a result of the Cantractor's operations or as a
result of vandalism, the Contractor shall replace the staking at the Contractor's sole
expense.
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I.DS REFEREI~~E BENCHfMARI~S, MONUMENTS & PROPERTY CORNER.S
. A. Maintain benchmarks, monuments, property corners, and all other reference points.
If disturbed or destroyed, benchmarks, monuments and property corners shall be
replaced by a registered Land Surveyor or Professional Engineer at the sole expense
of the Contra.ctor.
Pt~RT ~ - PR(?DUCTS
2.01 B~I)DING MATERYAL FOR RIGII~ AND FLExiBLE PIPE
A. General
l. In general, determination of the source material for bedding sha~l be the
responsibility of the Contractor, but use of the mate~ials shall be subject to the
approval of the Engineer.
2, Otherwise, approved imported material shall be used for all material
classifications.
B. Bedding Material
1. "Select native material" shall be defineti as that portion of native material, one
hundred percent (100%) of which can pass a 3/4-inch U.S. Standard sieve. All
material not passing the 3/4-ineh U.S. Standard sieve shall be hauled off site at the
Contractor expense.
2. "Imported bedding material" shall consist of clean, well graded granular material,
meeting the requirements for Bedding Material for Pipe in Section 7-10.3(9) of
the Standard Specifications.
2.02 BACKFILL MATERIAL
A. Gex~eral Backfill Material
1. The material shall be subst~tia~lly free from peat, wooc~, roats, bar~ ~r other
extraneous material.
2. The material size of stflnes within this material shall not exceed b inches in the
largest dimension or as approved by the ~ngineer.
B. Select Granular Backfill: Select granular backfill material shall be clean crushed,
partially crushed, or naturally occurring granular material, meeting the following
requirements for gradation and quality
Siev~ Size Percent Passin~
3" square 100 :
I /4" square 25 minimwn
U.S. No. 40 Sieve 40 maximum
U.S. No. 200 Sieve 7.5 maximum
~y+ms102395-2 TRENCH/NG, BACKFILLING & C~MPACTlON FOR UTILl7'lES 423'{5-2
Sand equivalent 35 minimum
PART 3 - EXECUTION
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3.01 TRENCHING, BACKFILLING & COMPACTION FOR PIPE
A. Trench Excavation
1. Clearing and Cmxbbing: The area to be excavated shall be cleazed and grubbed by
the Contractor. This work shall consist of the removal and disposal of a11 Iogs,
stumps, roots, brush, and all other refuse within the area to be excavated. All
such material shall be disposed of offsite at a Contractor provided waste site
unless other wise directed by the Engineer.
2. Removal of Existing Improvements: With cert~in exceptions the Contractor sha11
remove and replace all culverts, fences; pavements, sidewalks, and other
obstructions that lie within the area to be excavated, except items specifically
marked for demolition. The exceptions are utility improvements and any other
items the Engineer may direct the Contractor to leave intact. All materials
described above shall be disposed of offsite at a Contractor provided waste site.
In removing pavement, sidewalks, and curbs, tlie Contractor shall make a vertical
saw cut between any e~sting pavement, sidewalk, culvert, or curb that is to
remain and the portion to be removed. T'he Contractor shall replace any existing
pavement, sidewalk or other improvement designated to remain that is damaged
during the Contractor's operations. Ti~e costs of a11 such.rep~acernent shall be
borne by the Contractor.
3. Existing Utilities: E~cisting utilities of record (electrical power lines indicated on
the plans are estimations provided by the owner) aze shown. on the plans. These
are shown far convenience oniy, and the Engineer assumes no responsibility for
improper locations or failure to show ufility locations on the Plans. The
Contractor sball be responsible for protecting all existing public and private
utilities including, but not limited to telephone, power, gas, and water lines. Ca11
1-800-424-5555 for utility location. Any utility owner may enter the job site to
repair, rearrange, alter or connect their equip~ent. The Contractor shall cooperate
with such efforts and shall avoid creating delays or hindrances to those doing the
work. As nee~.~d, the Contractor shalll ~rrange to coordinate work schec~ules. To
ease or streamline the work, the Contractor may desire to ask utility owners to
move, remove, or alter their equipment in ways other that those listed in the Plans.
The Contractor shall make the arrangements and pay all costs that arise form
them. All costs that this section makes the Contractor's obligation sha11 be
incidental to the Contract Bid Items and no separate compensation will be
allowed.
4. Trench Excavation: Trench excavat~on sha~~ be performed in accordance with
section 7-08 of the Standard Specifications, except as modified herein. The
length of trench excavated shall be only that necessary to install the required
improvements, sha11 be kept to a minimum, and in no instance shall it exceed
three hundred (300) feet unless specificall~ authorized by the Engineer. All
trenches sha11 be closed up at the end of the day. In a11 cases, the trench must be
of sufficient width to permit proper jointing of the pipe and backfilling of material
[ym,s~ 02315-3 TRENCHING, BACKFILUNG & COMPACTION FOR UTILITIES 02395-3
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B.
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along the sides of the pipe. Trench width at the surface of the ground shall be
kept to the minimum necessary to safely install the im.provements identified in the
Contract Plans.
5. Shoring and Cribbing: Shoring and cribbing shall comply with Section 2-
09.3(3)D of the Standard Specifications.
5tockpiling & Disposal
1. Unless approved or directed otherwise by the Engineer, all excavated material
sha11 be removed from the site and disposed of at a Contractor provided waste
site. If suitable material is encountered, the soil sha11 be piled beside the trench as
it is removed, unless otherwise directed, and sha11 be backfilled from the position.
The material shall be piled and maintained so that the tow of the slope of the
material is at least 2 feet from the edge of the trench. It sha11 be piled in such a
manner to prevent surface water from flowing into the excavation and in a manner
that will cause a minimum of inconvenience to travel. Free access shalt be
provided to all fire hydrants, water valves and meters; and clearance shall be left
to ena.ble the free flow of stormwater in a11 gutters, conduits, and natural
watercourses.
2. The disposal of excess material shall be considered as incidental.
Control of Water
1. The Contractor shall furnish, install and operate all necessary machinery,
appliance and equipment to keep excavations free from water during construction,
and shall dewater and dispc~se of the water so as not to cause injury to public or
private property or to cause a nuisance or menace to the public. The Contractor
shall at all times have on hand sufficient pumping equipment and maclunery in
good working conditions for all ordinary emergencies, including power outage,
and shaii have available at all times competent workers for the operation of the
pumping equipment.
2. The control of ground water shall be such that softening of the bottom of
excavations, or formations of "quick" conditions or "boils" during excavation
shall be prevented. Dewatering systems sha11 be designed and operated to prevent
removal of natural soils.
3. Dewatering of the trench sha11 be considered as incidental to the construction and
a11 costs thereof shall be included in the various contract prices in the proposal.
Bedding & Backfilling:
1. Pipe shall be bedded in conformancs with Section 7-08 of the Standard
Specifications and the details on the Contract Plans. Beddingshall be placed in
more that one lift. The first lift is to provide at least 4 inches of bedding under
a.ny portion of the pipe and sha11 be placed befare the pipe is installed, and sha11
be spread smoothly so that the pipe is uniformly supported along the barrel.
5ubsequent lifts of not more that 6 inches tluckness shall he installed to a depth of
b inches over the crown of the pipe. Each Iift sha11 be compacted to 95 percent of
the maximum density as determined by methods outlined in Section 2-03.3(14}D
of the Standazd Specifications.
2. ~or bedding purposes, "Select native materials" sha.ll be defined as that portion of
native material, one hundred percent (100%) of which can pass a 3/4-inch U.S.
Standard Sieve.
3. Trenches shall be backfilled in conformance with section 7-10.3(10) of the
Standard Specifications. Prior to backfilling, a11 debris shall be removed from the
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trench. Sheeting used by the Contractor sha11 be removed just ahead of
backfilling. Backfill up to 12 inches over the top of the pipe shall be evenly and
carefully placed. Materials capable of damaging the pipe or its coating shall be
removed from the backfill material. The remainder of the material sha11 be placed
by aumptng into the trench by any method at the option of the contractor and shall
be compacted as specified herein after. A minimum
3 inch sand cushion shall be placed between the water main and existing pipelines
or other conduits when encountered during construction and as directed by the
Engineer.
E. Compaction
1. Pipe Bedding sha11 be compacted to at least 90% of the maximum density as
determined by ASTM D-1557 except as noted. Trench Backfill shall be
compacted to at least a minimum of 95% of the m~imum density as determined
by ASTM D-1557. At locations where paved streets, roadway shoulders,
driveways, or sidewalks will be constructed or reconstructed over the trench, the
backfill shall be spread in layers and be compacted by mechanical tampers. In
such cases, the backfill material shall be placed in successive layers not exceeding
6 inches in loose thickness, and each layer sha11 be compacted with mechanical
tampers to tke density specified herein. Mechanical tampers shall be of the
impact type as approved by the Engineer.
3.02 TRAFFIC CONTROL AND PUBLIC SAFETY
A. Traffic control sha1l be in accordance wi~h VVashington State Departmen~ of
Transportation requirements when work is in Washington State right of way.
B. Maintain appropriate barrica.des and si,gning to protect public safety.
END OF" SECTION 0231 S
[yrms) 02315-5 TRENCHING, BACKFILLlNG 8 COMPACTION FOR tJTIL1TlES 02315-5
1 SECT'ION 02370 - EROSIOIY CONTROL
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PA1ZT 1- GENEIZAL
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1.01 DESCRIP'TION
A. Work of this Section is bound by the Conditions of the Contract and Division 1
Specifications sections, bound herein, in addition to this Specification and
accompanying Drawings.
B. RELATED WORK SPECIFIED ELSEWHERE
1. Section 02220 - Site Demolition and Clearing & Preparation
2. Section 02300 - Earthwork
3. Section 02315 ~- Trenching, Bac~lling and Compaction for Utilities
4. Section 02740 - Asphalt Concrete Pavement
5. Section 02750 - Portland Cement Concrete Pavement, Curbs and Sidewalks
6. Section 02721 - Catch Basins and Inlets
7. Section Q2630 - Stormwater System
1.02 WORK INCLUDED
A. Work under this Secrion includes all labor, supervision, equipment, tools mazeriats,
services and incidentals necessary for, but not limited to: installation of silt fence,
installation of catch basin inlet protection, erosion control for disturbed surfaces,
provide site maintenance of any sediment transport inlet protection, plastic covering,
street cleaning, construction entrances, seeding, f~rtilizing silt traps, and mulching.
B. Erosion control shall include all site surface stabilization requu~ed during the
construction of the project. Specifically, this effort is to include silt fences along the
down slope perimeter of the construction area, installing inlet protection in all inlets
within the fenced project area and along material haul routes, and protection of ail
disturbed and exposed soil surfaces during the construction period where erosion is a
potential. All erosion control measures installed shall be maintained by the
Coniractor.
1.03 QUALITY ASSURANCE
A. PERMITS & LICENSES
1. Obtain and pay for any required permits.
2. Contractor shall be licensed for any work required under this i#em.
B. STANDARD SPECIFICATIONS
1. The work under this section shall be govemed by the 2004 version of the WSDOT
"Standard Specifications" for Road, Bridge, and Municipal Construction
published by the Washington State Department of Transporta.tion (WSDO'1~.
2. All references in the Standard Specifications to measurement and payment shall
be deleted from consideration, and the terms agreed to in the Contra.ct substituted
therefore.
(yrms) 0237tJ-9 EROSION CONTROL 02370-1
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PART 2 - PROI)IJCTS
2.Q 1 MATERIALS
A. Silt fence, inlet protection, plastic covering, street cleaning, seeding, fertilizing and
mulching shall be in accordance with Section 8-Ol of the Standard Specification.
B. 5tabilized conshuction entrance rock paving shall consist of quarry spalls as
described in Section 9-13.6 of the Standard Specificabons.
PAR'T 3 - E~ECUTIC~N
3.01 ~ROSION CONTROL
A. Silt fence, inlet protection, plastic covering, street cleaning, seeding, fertilizing and
mulching sha11 be installed in accordance with Section 8-41 of the Standard
Specification.
B. The Con#ractor shall install silt fence on the downhill side of all open trenches and
disturbed areas, to prevent the migration of soil materials due to construction
activities and as directed by the Engineer.
C. The contractor shall install inlet protection on stormwater catch basins and manholes
within and adjacent to the constiuction site and as directed by the Engineer.
D. Disturbed surface stabilization, consisting plastic covering, street cleaning, seeding,
fertilizing, seeding and mulching (see landscape plans and specifications for type aad
locations of seeding and mulching) shall be applied to areas where surficial soil is
exposed for more than 14 days during the period between October 01 and April Ol
and/or as directed by the Engineer.
E. Stabilized construction entrance shall be constructed in~ accorda.nce Section 8-01.3(6)
of the Standard Specifications and in accordance with tl~e plans.
END OF SECTION OZ370
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EROSION CONTROL
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SECTIDN 02510 - WATER SYSTEM
PART 1- GENERAL
1.01 DESCRIPTION
A. Work of this Section is bound by the Conditions of the Cantract and Division 1
Specifica.tions sections, bound herein, in addition to this Specification and
accompanying Drawings.
1.02 WORK INCLUDED
A. Work under this section includes all labor, supervision, equipment, tools, materials,
service and incidentals necessary to furnish and install water pipelines, valves, fittings
and appurtenances as shown on the Contract Plans to convert domestic service to
irrigation, and for domestic and fire services (see the mechanical and architectural
plans for all work within four feet of the building structure).
1.03 RELATED SECTIONS
A. Section 02220 - Site Demolition and Clearing & Preparation
B. Section 02300 - Earthwork :
C. Section 02315 - Trenching, Backfilling and Compaction for Utilities
D. Section 02740 - Asphalt Concrete Pavement
E. Section 02750 - Portland Cement Concrete Pavement, C~rbs and Sidewallcs
F. Section 02721 - Catch Basins and Inlets
G. Section 02630 - Storinwater System
1.04 QUALITY ASSURANCE
A. PERMITS & LICENSES
1. Obtain and pay for any required permits.
2. Contractor sha11 be licensed for any work required under this item.
B. STANDARD SPECIFICATIONS
1. The work under this section sha11 be governed by the 2004 version of the WSDOT
"Standard Specifieations" for Road, Bridge, and Municipal Construction
published by the Washington State Department of Transportation (WSDOT).
2. All references in the Standard Specifications to measurement and payment shall
be deleted &om consideration, and the terms agreed to in the Contraet substituted
therefore.
1.05 CONSTRUCTION STAKING
[ym-s~ 02510-1 WATER SYSTEM 02514-1
A. The Contractor shall supply all construction survey control and stakeout for the
approval of the Engineer prior to construction. The alignment of water mains, storm
sewers and sanitary sewers and locations of components to be installed shall be as
indicated on the Contract Plans. All survey control work sha11 be done by a registered
Land Surveyor or Professional Engineer.
B. Should construction staking be lost as a result of the Contractor's operations or as a
result of vandalism, the Contractor shall replace the staking at the Contractor's sole
expense.
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1.06 REFERENCE BENCHMARKS, MOlViJMENTS & PROPERTY CORNERS
A. Maintain benchmarks, monuments, property corners, and all other reference points.
If disturbed or destroyed, benchmarks, monuments and property corners shall be
replaced by a registered Land Surveyor or Professional Engineer at the sole expense
of the Contractor.
1.07 SYSTEM INSPECTTONS
A. The water system sha11 be inspected by the City of Yelm as required. Coordinate with
the City for all required testing and inspections. The Design Engineer shall be notified
24-hour for testing, inspections and backfilling
PART 2 - PRODUCTS
2A1 WATERMAIN PIPE & FITTING MATERIALS
A. Pipe shall be of several material types as noted on the plans and as described herein.
Pipe material types are interchangeable only as described herein.
1. All watermain shall meet the City of Yelm Standards and as shown on the
contract plans and notes.
2. All fittings for ductile iron pipe shall be ductile iron or PVC pipe shall be ductile
iron compact fittings conforming to AWWA C 153 or Class 250 gray iron
conform.ing to AWWA C 110 and C i 11. All sha11 be cement mortor lined
conforming to AWWA C 104. Plai.n end fittings shall be ductile iron if
mechanical joint retainer glands are install on the plain ends. All fittings shall be
connected by flanges or mechanical joints. They sha11 meet the City of Yelm
Standards.
2.02 GATE VALVES AND VALVE BOXES
A. Gate Vaives shall conform to AWWA C509-80 latest edition and shall be resilient
wedge non-rising stem (NRS) with two internal o-rings stem seals. Gate valves shall
be MueIler, M& H, Kennedy, Clow R/W or Waterous Series 500 meeting the City of
Yelm Standards as shown on the contract plans and notes.
B. All valve boxes shall have a standard Inland Foundry, Yelm 248 Water valve box set
to grade with a 6 inch ASTM D30304 SDR 35 PVC riser from valve to within 4 to 6
inches of valve box top. If valves are not set in paved area, a 3 foot by 3 foot by 4
inch concrete pad shall be set around each valve box at finished grade. In areas where
(yrrns) 02510-2
WATER SYSTEM
0251 Q2
valve box falls in road shoulder, the ditch and shoulder shall be graded before placing
asphalt or concrete pad.
2.03 FIRE HYDRANTS
A. The lead from the service main to the fire hydrant shall be ductile iron cement mortor
lined Class 52 no less than 6 inches in diameter. MJ joints shall be restrained with
wedge action retainer glands, MegaLug 1006 or approved equal.
Fire hydrants, shall have two, 2-1/2 inch outlets and one 4-1/2 inch pumper port
outlet. All outlets ports shall be National Standard thread. The valve opening sha11 be
no less than 5-1/4 inch diameter with a 5-inch "Storz" coupling and blind flange cap
installed on the steamer port. The hydrant shall have a positive and automatic barrel
drain and shall be of the "traf~'ic safety" or break-away style; i.e., when accidentally
broken off, water will not flow.
All hydrants shall be center-stem compression design, valve shall open against
pressure.
Hydrants shall be M& H Reliant Style 929 or Style 129, Mueller Centurion, or Clow
Medallion. All hydrants shall be bagged unril system is approved.
2.04 PIPE DETECTION WIRE
A. As noted on the conh~.ct plans and notes, pipe detection wire shall be 14 gage heavy
duty direct bury coated wire (PAIGE "UF" single conductor or equal).
2.05 MARKER TAPE
A. As noted on the contract plans and notes, marker tape shall be plastic non-
biodegradable and metal core with backing marked "Water" wluch can be detected by
a standard metal detector. Tape shall be Terra Tape "D" or approved equal, 2" wide,
blue, continuously marked with "Caution Waterline Buried Below."
2.05 IRRIGATION METER
A. The irrigation meter shall meet the City of Yelm Standards and as shown on the
contract plans and notes {see the irrigation plans and specifications for the landscape
system beyond the point of connection).
2.06 MECHANICAL JOINT REST'RAINT GLANDS
A. Mechanical joint restraint glands shall be MegaLug 1100 Series for ductile iron pipe
or MegaLug 2000 PV for PVC pipe or approved equal.
2.07 PIPE JOINT RESTRAINT
A. Where shown on the plans pipe joint restraint for ductile iron pipe shall be EBBA
Iron Series 1200 for Mechanical joint end pipe, EBBA Iron Series 1700 for bell end
(yrms] 02510-3 WATER SYSTEM 02510-3
pipe, or mechanical joint sleeve coupling with EBBA iron series 1200 for each end or
approved equal.
4 PART 3 - EXECUTION
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3.01 PIPE AND FITTING INSTALLATION FOR WAT'ERMAINS
A. Ductile Iron Pipe shall be installed in accordance with Section 7-09 of
WSDOT/APWA Standard Specifications and the City of Yelm Standards. In case of
conflict, follow the City of Yelm Standards. Minimum cover for waterlines shall be
3.5 feet measured from the top of the pipe to finished gra.de except as otherwise
shown on the Contract Plans or as required to maintain separation from existing
utilities.
B. The cost of furnishing and installing water fittings shall be deemed incidental to the
pipe, and no separate compensation shall be made.
3.02 DETECTION WIRE/MA.RKER TA.PE
A. In conforrnance with the City of Yelm Standards as shown on the contract plans and
notes, the Contractor shall furnish and install pipe detection wire. T'he wire shall be
installed at a depth of 12" to 18" below finished grade, above the pipeline, and as
approved by the Engineer.
B. The wire shall be laid continuously over all portions of the watermain, shall be copper
taped to the top of the pipeline to prevent movement during backfilling and shall be
bmught up and tied to all valve bodies, meter setters with the end of the wire
accessible to hook up to a locator with a minimum of 2 ft of slack.
C. The wire shall be laid loose enough to prevent stretching and damage
D. Detection wire shall be detectible with a standard metal detector.
E. Toning wire shall be tested prior to acceptance of the pipe system.
3.03 VALVE INSTALLATION
A. Valves shall be installed in accordance with Section 7-12 of the VJSDOT/APWA
Standard Specifications and in conformance with the City of Yelm St~.ndazds as
shown on the contract plans and details. The Contractor sha11 furnish and install
valve operator risers as appmved by the Engineer at all locations where valve
operating nuts are located deeper than five (5) feet below finished grade. The cost of
furnishing and installing the valve operator risers shall be deemed incidental to the
gate valve, and no separate compensation sha11 be made.
3.04 THRUST BLOCKING
A. All underground fittings shall be installed with the proper thrust blocking in
conformance with the details shown on the plans and with the Waterworks Manual -
Basic by the Coordinating Council for Occupational Education. Where noted on the
contract plans and details mechanical joint restraining glands shall be used in lieu of
thrust blocking.
(ym,s] 02510-4 WATER SYSTEM 02510-4
3.05 WATER FACILITIES DTSiN~ECTION AND TESTING
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A. Upon completion of the construction of the Water system, the Contractor sha11 test
each component and the entire system to confirm the operational adequacy of the
system and portability of the water provided.
B. Bacteriological Disinfection
l. The Contractor shall chlorinate, flush and obtain satisfactory samples from t~e
locations designated by the Engineer. All watexlines shall be disinfected and
flushed in conformance with Section 7-11.3(12) of the WSDOT/.APWA Standard
Specifications.
2. Sections of pipe to be disinfected shall first be flushed to remove any solids or
contaminated material that may have become lodged in the pipe. If no hydrant is
installed at the end ~of the main, then a tap shall be provided large enough to
develop a velocity of at least 2.5 fps in the main.
3. Taps required by tlae Contractor for temporary or permanent reiease of air,
chlorination or flushing purposes, shall be provided by the Contractor as a part of
the construction of water mains.
4. Where dry calcium hypochlorite is used for disinfection of the piping, flushing
shall be done after disinfection.
5. The Contractor shall be responsible for disposal of treated water flushed fram
mains and sha11 neutralize the wastewater for protection of aquatic life in the
receiving water before disposal into any natural drainage channel, The Contractor
sha11 be responsible for disposing of disinfection soiution to the satisfaction of
State and local authorities. If there is no acceptable area for disposal of water
flushed from mains, the Contractor shall haul the water to a site approved by
School District staff and shall dispose of the water ae the site per School District
staff requirements.
C. Hydrostatic Pressure Testing pressure pipelines shall be fested with hydrostatic
pressure in accordance with Section 7-11.3(11) of the WSDOT/APWA Standard
Specifications.
D. Incidentals: All service taps, temporary connections, chemicals, wastewater disposal
requireme~ts, and appurtenances required for pressure and portability testing shall be
deemed incidentai ~o ~iie instaiiarion of fhe wa.termain and services and no separate
compensation shall be made.
END OF SECTION 02510
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WATER SYSTEM
02510-5
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1 SECTION 02530 - SAI~TITAItY SEWERAGE SYS'TEIVIS
2
3 PAR_T 1- GENERAL
4
s 1 A1 CONTRACT CONDITIONS
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7 A. Work of this section is bound by the Conditions of the Contract and Division
s 1 Specifications sections, bound herein, in addition to ttus Specification and
9 accompar~ying Drawings.
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11 1.02 RELATED SECTIONS
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13 A. Section 02315 - Trenching, Backfilling and Compaction for Utilities.
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15 1.03 WORK INCLUDED
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17 A. Thzs section includes sanitary sewage disposal including ~ravity collection
18 pipe, STEP pump control & alarm panel, STEP pumps, STEP tanks,
19 cleanouts, pressure sewer line, and appurtenances. Where City of Yelm
2Q approvat of constre~ctzon is required, STEP ~2nes, STEP tanks ar~d pump
21 and control/alarm assemblies, submit copies of City of Yelm approvai.
22
23 1.04 QUALITY ASSURANCE
24
25 A. The work under this secrion sha11 be governed by the following defined
z6 references except as modified herein.
27
2s STANDARD SPECIFICATIONS: The "Standard Specifications" or
29 "APWA/WSDOT" .wherein referenced shall be govemed by the 2004 of
3o the Standard Specifications for Road, Bridge, and Municipal Construction
31 pubiish~d by the Washington State Department af Transpartatian
32 (WSDOT), American Public Works Association ~APWA) and the City of
33 Yelm Development Cxuidelines. All references in the Standard
34 Specifications to measurement and paymea~t shall be deieted from
3s consideration, and no separate compensation will be allowed.
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37 T'he National Electric Code.
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39 The Washington Saf~ty Code
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41 All local codes and ordinances.
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43 1.05 REFE _RENCE BENCH. MA.RI~S, MONUMENTS & PROPERTY CORNERS
~
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A. Mainta.in bench marks, monuments, property corners, and all other
reference points. If disturbed or desfiroyed, bench marks, monuments and
property comers shall be replaced by a registered Land Surveyor or
Professional Engineer.
1.06
A. Existing utilities of record, except services, are shown on the contract
plans. These are shown for convenience only, and the Engineer assutnes
no responsibility for improper locations or failure to show utility locations
on the plans. The Contractor shall be responsible for protecting existing
utilities and shall be responsible for any damages. Contractor shall contact
the underground utility locating service at 1-800-424-SS55 48 hours prior
to const~~ction.
1.07 BUILDING AND ELECTRICAL PERMITS
A. Obtain permits and ins~ections required by state and local authorities.
During progress, the work will be observed by the Architect, Engineer or
authorized representative and by state and local Building and Electrical
Inspectors and their certificates sha11 be furnished to the Owner. Notify
Engineer in writing when certificates have been delivered. The Contractor
shall include the costs of a11 permit fees in the contract bid and no separate
compensation will be made.
1.08 REGULATIONS
A. The pumps, float switches, and wiring, control panel, and appurtenances
shall comply with tha Sta.te of Washington's Department of Labor and
Industries requirements.
B. T'he Contractor sha11 furnish the Owner a copy of the Electrical Inspectar's
acceptance certificate for installation before payment w~ll be made for that
installation.
1.09
A. The Contractor sha11 supply all construction survey control and
construction staking for the approval of the Engineer prior to construction.
All survey control work shall be done by a registered Land Surveyor or
Professional Engineer. Maintain a11 bench marks, monuments and all other
reference points. If disturbed or destroyed, mQnuments and bench mazlcs
shall be replaced by a registered Land Surveyor or Professional Engineer.
The Contractor shall be compensated for work performed on this project
based on the units of work identified in the proposal. A11 work required to
complete the project and not specifically identified in a~roposal item,
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such as but not limited to construction staking, etc., shall be deemed
incidental to the items of work in the proposal and no sepazate
compensation shall be made.
110 SUBMITTALS
A. Submittals shall be made for the materials specified in this section. The
Contractor sha11 furnish four (4) sets of submittals to the Engineer for
review.
l.l 1 FIELD APPROVAL OF WORK
A. All construction shall be field approved by the Engineer, Jerome W.
Morrissette & Associates Inc., P.S.
1.12
A. The water system shall be inspected by the City of Yelm as required.
Coordinate with the City for a11 required testing and inspections. The
Design Engineer shall be notified 24hour for testing, inspections and
backfilling.
2.01 PVC PIPE & FITTINGS
A. PVC gravity sewer pipe shall conform to ASTM D3034 (SDR 35) with
gasket or solvent or solvent wEld joints and fittings..
B. PVC Pressure sewer pipe, 2 inches and above shall be Class 200 PVC IPS
1120 (SDR 21) with rubber gasketed joints in conformance with ASTMD
1784 and have a worki.ng pressure of 200 PSI.
C. PVC pressure pipe, less than 2-inches sha11 be Schedule 40, solvent weld
joints and comply with ASTM D 1785.
D. Solvent Weld Joints - Solvent cements and primer for joining
PVC pipe and fittings sha11 comply with ASTMD 2564 and be
as recommended by the pipe and fitting manufacturers.
E, Rubber Ring Gaskets shall comply with ASTMD 1869 and
ASTMD 3139 and shall be supplied by the pipe or fitting
manufacturer with a sufficient amount of lubricant. The
lubricant shall be water soluble, non toxic, non supportive of
bacterial growth and have no deteriorating effect on the PVC
or gasket.
F. Bedding - Bedding shall be crushed or granular material as
Per Section 9-03.12(3) of the Standard Specifications.
Bedding sha11 be installed as shown on the Standard Details.
[yrms] 02530-3 SANITARYSEWERAGE SYSTEMS 02530-3
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G. PVC Gravity sewer pipe in the Service Yard shall AWWA C900, Class
150.
2A2 DETECTABLE MARI~ING TAPE
A. Pipe detection tape sha11 be 14-gauge coated copper wire meeting City of
Yelm Standards. All costs to fu.rnish and install complete detectable
marking tape shall be included in the contract bid price.
2.03 CLEAN OUTS
A. Clean outs shall conform to the detail as shown on the Contract Plans. All
costs to furnish, install a complete clean out shall be included in the
contra,ct bid price.
2.04 STEP TANK
A. The septic tank shall be a Xerxes single wall of the size noted on the
plans and details.
Fiberglass STEP tanks shall be in conformance with City of Yelm
Development Guidelines, Chapter 7- Sanitary Sewer Requirements
for Fiberglass Tanks. Loading criteria for fiberglass Step tanks shall
be as noted in Chapter 7. The contractor shall obtain City of Yelm
approval for the fiberglass tank proposed for installation prior to
installation. Tl2e tank installation must meet the City of Yelm
Development Guidelines and ha.ve all City of Yelm required
inspections and testing prior to being accepted by the owner.
2.05 STEP PUIV~ ASSEMBLIES
A. In accordance with City of Yelm Development Guidelines, ST'EP pumps
shall be Orenco P20 OS 11, rated at 2Q gpm at 105 feet T.D.H., and with a
shut-off head of not less than 160 feet. A 1/8" bypass orifice shall be
drilled in the discharge head of the pump to allow for cooling pump motor
during periods of no discharge.
B. Internal Vaults shall be as Orenco Biotube as noted on the plans and
details.
C. Float switch assembly sha11 be Orenco MF-A3GT or equai subject to Cily
of Yelm approval.
D. Pump Control and alarm panel shall be Orenco TA 1 I R3 RO ETM CT or
equal subject to City of Yelm approval.
E. Hose and valve assemblies shall be Orenco HV 125 BASX 11/4"
diameter, PVC hose with PVC union and ball valve and anti-siphon valve
or equal subject to City of Yelm approval.
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F. R.isers for step tanks shall be ribbed PVC or FRP as noted on the plans and
details and shall be in accordance with City of Yelm Development
G~t~elines Chapter 7 Res~uirem~nts.
G. Tr~c bearing lids sha11 be as noted on the plans and details.
H. Additional material requirements - all equipment including but not limited
to pump vaults, risers, bonding epoxy, splice boxes, discharge piping, float
assemblies, pump control and alarm panel, etc. shall be in conformance
urith C2ty of Yelm Development Guidelines Re.~uirements.
2.06 VALVES SADDLES AND VALVE BOXES
A. Ba11 valves shall meet the City of Yelm Development Guidelines.
B. Gate va.~ves shall meet th€ City of Ye~m Development Guidelines.
C. Check valves shall meet the City of Yelm Development Guidelines.
D. Valves Boxes shall meet the City of Yelm Development Guidelin~es.
E. Saddles shali meet the City of Yelm Development Guidelines.
F. Standard Service Boxes sha11 meet the City of Yelm Development Guidelines.
3.01 GRAVITY SEWER LINES
A. INSTALLATION
Gravity sanitary sewer construction shall conform to the reqwirements of
Section 7-17.3 of the Standard Specifica.tions. Foundation stabilization,
preparation of bedding and initial and subsequcnt backfill shall be in
accordance with fihe requirements of Section 02315 and as shown on the
Contract I}rawings. A~1 gravity sewers sha~1 be cleanec~ ana ~ow pressure
air tested in accordance with Section 7-17.3 (2).
B. C4NNECTION TO BUII.,DINCr SAN~ITARY SEWER
The site contractor shall make the final connections to the building
sanitary sewers at the points shown on the Con.tract drawings, The site
contractor sha1~ confirm the exact location of bui~ding stubauts a~d s~a~~
adapt as required,
C. CLEANOUT INSTALLATION
Cleanouts shall be installed where shown on the Contract drawings and
where required for bends as provided by the Uniform Plumbing Code and
as amenaed by the 1oca1 government. A~~ c~ean-outs sha~I be extend~d to
finished grade in conformance with the detail shown on the Contract
Drawings.
D. MANHOLE
Manhole and construction shall be as noted on the plans and details and
shatt be as in confortnance with section 7-OS o~tt~e Standard
Specifications except as herein modified.
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3.02 PRESSURE SEWER LINES
A. INSTALLATION
Installation of pressure sewer tines shall be in conformance with Chapter
7E of the Ciry of Yelm Development Guidelines. Installation of solvent
weld pipe sha.ll be in accordance with ASTM D 2855 and the
manufacturer's recommendations. A double bell, rubber ring coupling
shall be installed on solvent weld piping runs langer than 100 feet.
Spacing of rubber ring caupling shall be at 100 foot spacing.
B. CLEARANCE FROM WATER MAINS
At locations where pressure sewer mains or services cross water mains the
pressure sewer main or pressure sewer service shall be installed below the
waterline so as to provide a minimum cleaxance of l 8 inches. In addition,
the length of sewer pipe sha11 be centered at the point of cross~ng so that
the joints will be equidistant and as far as possible from the waterline. The
sewer pipe sha11 be the longest standard length available from the
manufactwrer, with a minimum acceptable length of 18 feet.
3.03 DETECTION WIRE
A. The Contractor shall install a continuous strand of 14-gauge caated copper
wire taped to the crown of all PVC sanitary sewer effluent pressure service
lines. In addition, wire shall be spliced to provide electrical continuity by
loo~ing into valve boxes so as to be accessible.
3.04 TRACER TAPE
A. Tracer tape ~or sanitary sewer lines sha.ll be installed identically as shown
on the contract plans for watermain insta.llation. Tape shall be installed
over a11 sanitary sewer gravity collection lines and pressure e~luent lines
per the City of Yelm Standards.
3.D~
A. Cleaning and testing of the Gravity sewers sha11 be in accordance with
Section 7-17.3(2) of the Standard Specifications.
B. Cleaning and testing of STEP sewer lines shall be in conformance with
fihe City of Yelm Development Guideli.nes and shall obtain City of Yelm
approval.
3.06 STEP TANK AND VALVE BOX IN5TALLATION
A. ]nstall tanks in accordance with manufacturer's recommendations and the
City of Yelm Development Guidelines. Tanks with cracks or other surface
imperfections will be rejected and immediately removed from the site.
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B. Earthwork shall be in accordance with Section 02300.
C. Shoring and dewatering where required, shall be in accordance with
Sections 0231 S and 02215. Backfill shall be placed and compacted in 8-
inch maximum lifts. Contractor shall comply uvlth manufacturer's
recommendations regarding backfiiling.
D. The backfill under and around the point of piping connections (both inlet
and outlet) to the tank sha11 be compacted to 95% of the maximum density
as determined in accordance with ASTM D 1557 to prevent differential
settlement and separation of the piping from the tank.
E. Contractor shall remove excess excavated material after tank installation
and shall grade the site so that a gentle slope exists away from the access
cover and blends with the surrounding ground.
F. Piping and conduits to tank, access holes and openings shall be watertight.
3.U7 AS-BUa,T DRAWING
A. The Contractor shall provide the Engineer with an as-built drawing of the
improvements.
3.08 SUBMITTAL~
A. Submittals shall be made for the materials specified in this section. The
Contractor shall fuYnish four (8) sets of submittals to the Engineer for
review,
3.09 ELECTRICAL FACILI~'IES
A. All electrical installation shall comply with the current editions of the
National Electrical Code, the Washington State Safety Code, and county
codes and ordinances.
3.10 STEP TANK TEST
A. Step tank sha11 be tested in accordance with the City of Yelm
Development Guidelines and shall obtain City of Yelm approval.
3.1 ~ PUMPS AND CflNTR.OLS
A. Pumps and controls shali be installed ar~d tested as noted on the plans ar~d
details, as noted herein, in conformance with Washington Safety Code
requirements, with the manufacturers recommendations, and in accordance
with the City of Yelm Development Guidelines. Pumps and controls shall
obtain Washington State Labor and Industries approvai and shali obtain
city of Yelm approval. Submit copies af approvals.
[ym~s) 02530-7 SfWITRRYSEWERfIGE SY~TEMS ~253f}-7
1 1. Components shall be installed in accordance with manufacturer's
2 printed instructions.
3 2. Control panels shall be mounted at the location shown on the
4 Contract drawings.
s 3. Contractor sha11 install pump control panel and shall provide
6 electrical power to the control panel.
7 4. Electrical conduit shall be installed at least 18 inches below grade.
8 Install conduit with a minimum of 24 inches cover in paved or
9 gravel areas ar deeper if required hy code.
10 5. Backfill for electrical conduit shall be native materials unless
11 installed in gravel or asphalt areas. Backfill shall be placed and
12 compacted in 6-inch maximum lifts. Backfill shall be structural
13 material used in pavement section and shatl be as shown on the
14 contract plans far the respective sections. Trench bottom shall be
15 uniform so that condui# is supported along entire length. Native
16 materials shall be compacted by wheel rolli.ng. Use mechanical
17 compaction to campact granular materials.
18 6. Excavations shall not be left open for more than 48 hours.
19 B. Testing and Acceptance
20 1. AfGer ca~npletion of the water tightness test, the Contractor shall
21 demonstrate the workability of the pump assembly and the various
22 electrical and alar~ features with clean water prior to connection
23 of the septic tank to the building sewer.
24
25 END AF SECT'IaN U253D
[yrms] 02530-8 SANITARYSEWERAGE SYSTEMS 02530-8
1 SECTIQN 02630 - ST012MUI~~IT~R SYSTEM
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PART 1-- GENERAL
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1.01 DESCRII'TION
A. Work of this Section is bound by the Condition of the Contract and Division 1
Specifications sections, bound herein, in addition to this Specificatian and
accompany~ng Draw~ngs.
1.02 WORK INCLUDED
A. Work under this section included all labor, supervision, equipment, tools, materials,
service and incidentals necessary for providing and installing roof drain piping,
cleanouts anc~ fzttings; sic~ewalk/plaza ctrains; yard ara~n system, ana veht~~e traff c
area drain system.
B. Work under tlus section inciudes a11 labor, supervision, equipment, tools, materials,
service and incidentals necessary to instail stormwater pipelines, cieanouts, catch
basins, including trenching, bedding, backfilling, compacting and dewatering as
required by the plans and details.
1.03 RELATED SECTIONS
A. Section 02220 -- Site Demolition aad Clearing & Preparation
B. Section 02300 -- Earthwork
C. Section 02315 -- Trenching, Backfilling and Compaction for Utilities
D. Section 02740 ~ Asphalt Concrete Pavement
E. Section 02750 - Portland Cement Concrete Pavement, Curbs and Sidewalks
F. Section 02721- Catch Basins and Inlets
G. Section 02630 -- Stormwater System
1.04 QUALITY ASSURANCE
A. PERMTTS & LICENSES
1. Obtain and pay for any required permits.
2. Contractor sha11 be licensed far any work required under this item.
B. STANDARD SPECIFICATIONS
l. The work under this section shall be governed by the most current version of the
WSDOT "Standard Specifications" for Road, Bridge, and Muzucipal Constructron
published b~ the Washington State Department of Transportation (WSDOT).
2. All references in the Standard Specifications to measurement and payment shall
be deleted from consideration, and the terms agreed to in the Contract substituted
therefore.
1.05 JOB CONDITIONS .
A. CONDITION 4F SITE PRIOR T~ CONSTRUCTION
[ym,s~ 02630-9 STORMWATER SYSTEM 02630-1
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1. Accept premises on an "as-is" condition; Owner assumes no responsibility for site
condition now, at time of bidding, nor thereafter.
2. Assume ail risks from damage or loss to premises by means of fire, the£t, and all
other causes.
3. Damage or loss resulting from any cause to buildings persons and/or property
sha11 not relieve Contractor fram his obligation to complete all work under the
contract.
B. PROTECTION
1. General: Conduct a11 operations in such a manner as to prevent damage to
existing structures and surfaces and adjacent properry. Keep free of damage those
portions of existing site building and appurtenance that aze to remain. Repair any
damage incurred because of the work of this section to the sati5faction of the
Owner.
2. Reference benchmarks and monuments:
a. Maintain benchmarks, manuments, and all other reference points.
b. If disturbed or destroyed, monuments and benchmarks sha11 be replaced by a
registered Land Surveyor or Professional Engineer.
3. Utilities:
a. Where existing utilities exist at site; either overhead or underground, take care
not to cause damage thereto; keep building drains, street drains and sewers
open, for free drainage at all times.
b. The Contractor shall be responsible for, and shall immediately repair, a11
damage to existing sewers, watermains, and building service connections to
the sazne, operated by the Owner, which is caused by the construction work;
repair such damage at no cost to Owner in manner approved by the applicable
utility, Contra~tor shall contact the underground utility locating service a 1-
800-424-5555 a minimum of 48 hours prior to construction.
4. Landscape plantings to remain: Save and protect trees as designated on
applicable Architectiual, Landscape and Civil Arawings or as designated in the
field.
S. Adjacent bui~ding: Provide protection required by tha General Conditions. Such
grotection includes occupants of said adjacent buildings, visitors, and passers-by
from dasnage, injury and discomfort caused by dust.
6. Street biockage: Coordinate with the Owner should blockage of any streets be
contemplated due to site prep work of this project; provide a11 necessary signs,
lights and barricades required for any said blockage.
7. Traff'ic control plan: Contractor sha11 provide a tra.ffic control plan for any work
that vvill interfere wi#h the nflrmal traffic flow. Contractor shall refer to VJSDOT
Standard Plans Section K for traffic control plans.
1.06 REFERENCE BENCHMARI~S, MONUMENTS & PROPERTY CORNERS
A. Maintain benchmarks, monuments, property corners, and a11 other reference points.
If dis4urbed or destroyed, benchmarks, monuments, and property corners shaYl be
replaced by a registered Land Surveyor or Pmfessianal Engineer at the sole expense
of the Cantractor.
(yrms) 02630-2
STORMWATER SYSTEM
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1.07 SYSTEM INSPECTIONS
A. The stormwater system shall be inspected by the City of Yelm as required.
Coordinate with the City prior to starting any work on the stormwater system. The
Design Engineer sha11 be notified prior to starting work on the stornawater system to
coordinate required inspections for certification. A 24-hour notification shall be given
to the Engineer prior backfilling any stormwater gallery.
PART 2 - PRODUC'I'S
2.01 GENERAL
A. Sizes and strength classifications of storm drain pipe to be used in all locations are
indicated.
2.02 PIl'E FOR STORM SEWERS
A. Pipe for storm sewers sha11 be installed in accordance with the sizes, lines and grades
shown on the plans and details.
B. Pipe for storm sewers shall be SDR 35 PVC, or SDR 26 where less than 3 feet of
cover.
C. Pipe materials shall meet the requirements of WSDOT Standard Specification 7-04-2.
2.03 BEEHIVE GRATES
A. Beehive grates shall be a MH30 as manufactured by Olympic Foundry, Inc.
2.04 AREA DRAINS
A. Area drains shail be DURA-DRAIN Model P-4 or approved equal. Shall include a
holt down galvanized steel grate connected to the 4-inch roof drain system with
fittings as required. All costs to install a complete area drain are included in the unit
price.
2.05 STORMWATER TREATMENT UNIT
A. Stormwater treatment system unit be completely housed within one rectangular
structure.
B. The completed stormwater unit shall be capable of removing 80% or the net annual
Total Suspended Solids (TSS) load based on a 50-micron particle size.
C: Stormwater treatrnent system shall have a usable sediment storage capacity of not
less than 0.7 cubic yards.
0. Stormwater treatment system shall include a water-lock to prevent the release of
trapped oil and floatable contaminants into the downstream piping during routine
maintenance and to ensure that no oil escapes the system during the ensuing rain
event.
E. Direct access shall be provided to the sediment and floatable contaminant storage
chambers to facilitate ma.intenance.
(yrms] 02630-3
STORMWATER SYSTEM
02630-3
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F. Pipe materials shall meet the requirements of Section 7-04.2 of the Standard
Specification.
G. The Contractor, and/or a manufacturer selected by the Contractor and approved by
the Engineer, shall furnish all labor, materials, equipment and incidentals required to
install and connect a pre-cast concrete stormwater treatment systems, consisting of a
Vortechnics Mode15000 or approved equal.
H. Concrete for pre-cast stormwater treahnent systems sha11 conform to ASTM C 857
and C 858.
1. The wall thickness shall not be less than 6 inches (152 mm) or as shown on the
dimensional drawings. In all cases the wall thickness shall be no less than the
minimum thickness necessary to sustain HS20-44 (MS18) loading requirements as
determined by a Licensed Professional Engineer.
J. Sections shall have tongue and groove or ship-lap joints with a butyl mastic sealant
conforming to ASTM C 990.
K. Cement shall be Type 11 Portland cement confornung to ASTM C 150.
L. All sections shall be cured by an approved method. Sections shall not be shipped
until the concrete has attained a compressive strength of 4,OQ0 psi (28 MPa) or until
5 days after fabrication and/or repair, whichever is the longer.
M. Pipe openings shall be sized to accept pipes of the specified size(s) and material(s),
and shall be sealed by the Contractor with a hydraulic cement conforming to ASTM
C 595M
N. Internal aluminum plate components shall be aluminum alloy 5052-H32 in
accordance with ASTM B 209.
O. Sealant to be utilized at the base of the swirl chamber sha11 he extruded EPDM.
P. Brick or masonry used to build the manhole frame to grade shall conform to ASTM
C 32 or ASTM C 139 and shall be installed in conformance with all local
requirements.
Q. Casting for manhole frames and covers shall be in accordance with A5TM A48,
CL.30B and AASHTO M105. The manhole frame and cover shall be equivalent to
Campbell Foundry Pattern #1009A or #1012D custom cast with the Vortechnics
logo and the words Vortechnics Stormwater Treatment System".
R. A bitumen sealant in conformance with ASTM C 990 shall be utilized in affixing the
aluminum swirl chamber to the concrete vault.
S. Stormwater system shall ha.ve a minimum certifiable successful performance record
of 5 years.
T. Shop Drawings: The Contractor sha11 provide dimensional drawings of the
stormwater treatment system as provided by the supplier and shall utilize these
drawings as the basis for preparation of shop drawings showing details for
construction, reinforcing, joints and any cast-in-place appurtenances, in accordance
with Section 01330. Shop drawings shall be annotated to indicate all materials to be
used and all applicable standards for materials, required tests of materials and design
assumptions for structural analysis. Structural design calculations and shop
drawings shall be certified by a Professional Engineer retained by the system
manufacturer or Contractor and licensed in the state where the system is to be
installed. Shop drawings shall be prepared at a scale of not less than 3/16-inches per
foot (1:75). Six (6) hard copies of said shop drawings shall be submitted to the
Engineer for review and approval.
[yrtns) 02630-4
STORMWATER SYSTEM 02630-4
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2.06 INFILTRATION GALLERY PTPE AND APPURTENANCES
A. The perforated pipe material shall be in accordance with the manufacturers
s~pecifications and shall meet the requirements of Section 9-OS-2{8) of the WSDOT
S~~pecifications.
B. Washed drain rock sha11 meet Section 9-03.12(5) of the WSDOT Standard
Specifications.
C. Thedrywell geotextile shall meet Section 9-33, Non-woven Moderate Survivability,
Class A of the WSDOT Standard Specifications
PART 3 - EXECUTION
3.01 TRENCH EXCAVATION, BACKFILL AND COMPACTION
A. Trench excavation, backfill, and compaction sha11 conform to the requirements of
Section 02315, Trenching, Backfilling, and Compaction For Utilities.
3.02 PIPE
A. Storm pipe shall be installed in the sizes, material types and to the lines and grades
shown on the plans.
B. Storm pipe shall be installed in accordance with Section 7-04 of the Standard
Specifications.
C. Leakage/pressure tests shall be performed on installed pipelines, and shall consist of a
low pressure air test in accordance with Section 7-04.3(1)F of the Standard
Specifications.
3.03 CATCH BASINS
A. Catch basins shall be installed in accordance with the manufacturer's
recommendations and in accordance with Section 7-OS of the Standard Specifica.tions.
B. Catch basin frames shall be installed with the flanges in the down position.
C. Catch basin grates shall be installed in accordance with Standard Plan B-2a or B-2b
of the Standard and with the instructions embossed on the finish surface of the grate.
3.04 PRECAST CONCRETE VAULT
A. Vault floor shall slope 1/+-inch maximum across the width and slope downstream 1-
inch per 12 floor of length. Vault top finish grade shall be even with surrounding
finish grade surface unless otherwise noted on plans.
B. Contractor shall grout all inlet and outlet pipes flush with vault interior wall.
C. Sanded PVC fittings shall be used on all PVC inlet and autlet pipes.
D. Contractor responsible for inspecting and/or completing installation of flow spreaders
and energy dissipaters.
3.05 BEEHIVE GRATE
A. Beehive grates shall be installed in accordance with the manufacturer's
recommendatians.
[yrms~ 0263Q5
STORMWATER SYSTEM
02630-5
3.06 AREA DRAINS
A. Area drains shall be installed in accordance with the manufacturer's
recommendations.
3.07 CLEAN UP
8 A. Remove all excess materials, rocks, roots, or foreign material, leaving the site in a
9 clean, complete condition approved by the engineer. All filter components shall be
10 free of any foreign materials including concrete and excess sealant.
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12 END OF SECTION 02630
[yrms] 02630-6 STORMWATER SYSTEM 02630-6
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1 SECTION 02721- CATCH BAS/AiS AND INLETS
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4 PART 1- GENERAL
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6 1.01 DESCRIPTION
7
8 A. Work in this section is bound by the Conditions of the Contract and Division 1
9 Specifications sections, bound herein, in add.ition to this Specification and
10 accompanying Drawings.
11
12 1.02 WORK INCLUDED
13
14 A. This section covers the work necessary for the catch basins and inlets, complete.
15 B. In general, work specified herein shall be included in the Bid.
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17 1.03 RELATED SECTIONS
18
19 A. Section 02215 - Subgrade Prepar~tion
20 B. Section 02315 - Trenching, Backfilling, and Compaction for Utilities
21 C. Section 02300 - Earthwork
22 D. Section 02630 - Stormwater System
23
24 1.04 QUALITY ASSURANCE
25
26 A. PERMITS & LICENSES
a~
28 1. Obtain and pay for any required permits.
29 2. Contractor to be licensed for any work in the locality of the project.
30
31 B. REFERENCES
32
33 1. the work under this section shall be govemed by the following defined references
34 except as modified herein:
35 2. STANDARD SPECIFICATIONS: The most current version of the WSDOT
36 "Standard Specifications" for Road, Bridge, and Municipal Construction
37 published by the Washington State Department of Transportation (WSDOT~. All
38 references in the Standard Specifications to measurement and payment shall be
39 deleted from considera.tion, and the terms agreed to in the Contract substituted
40 therefore.
41
42 1.05 JOB CONDITIONS
43
44 A. CONDITION OF SITE PRIOR TO CONSTRUCTION
45 .
46 1. Accept premises on an "as-is" condition; Owner assumes no responsibility for site
47 condition now, at time of bidding, nor thereafter.
[yrms] 02721-1 CATCH BASlNS AND INLETS 02721-1
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2. Assume all risks from damage or loss to premises by means of fire, theft, and all
other causes.
3. Damage or loss resulting from any cause to buildings, persons, and/or praperty
sha11 not relieve Contractor from his obligation to complete all work under the
contract.
B. PROTECTION
l. General:
a. Conduct all operations in such a manner as to prevent damage to existing
structures and surfaces and adjacent property. Keep free of damage those
portions of existing site buildings and appurtenances that are to remain.
Repair any damage incurred because of the work of this section to the
satisfaction of the Owner.
2. Reference benchmarks and monuments:
a. Maintain benchmazks, monuments, and all other reference points.
b. If disturbed or destroyed, monuments and benchmarks shall be replaced by a
registered Land Surveyor or Professional Engineer.
3. Utilities:
a. Where existing utilities exist at site, either overhead or underground, take care
not to cause damage thereto; keep building drains, street drains and sewers
open, for free drainage at all times.
b. The Contractor sh~ll be responsible for, and shall immediately repa.ir, all
damage to existing sewers, watermains, and building service connections to
the same, operated by the Owner, which is caused by the construction work;
repair such damage at no cost to Owner in manner approved by the applicable
utility. Contractor shall contact the underground utility locating service at 1-
800-424-5555 a minimum of 48 hours prior to construction.
4. Landscape plantings to remain: Save and protect trees as designated on
applicable Architectural, Landscape and Civil Drawings or as designated in the
field.
5. Adjacent buildings: Provide protection required by the General Conditions. Such
protection includes occupants of said adjacent buildings, visitors, and passers-by
from damage, injury and discomfort caused by dust.
6. Street blockage: Coordinate with the Owner should blockage of any streets be
contemplated due to site prep work of this project; provide all necessary signs,
lights, and barricades required for any said blockage.
7. Traff'ic control plan: Contractor sha11 provide a traffic control plan for any work
that will interfere with the normal brat~'ic flow. Contractor shall refer to WSDOT
Standard Plans Section K for traffic control plans.
PART 2 - PRODUCTS
2.01 CONCRETE
A. Concrete shall be ready-mixed, conforming to ASTM C94, Alternate 2. Compressive
field strength shall be less than 2,500 psi at 28 days. Maximum size of aggregate
shall be 1'/Z inches. Slump shall be between 2 and 4 inches. Field strength sha11 be
assumed as equal to 85 percent of the strength of laboratory-cured cylinders.
(ym,s) 02721-2 CATCH BASINS AND /NLETS
02721-2
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1 2.02 FORMS
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3 A. Exposed surfaces shall be plywood, others shall be steel, matched boards, plywood,
4 or other acceptable material. Form a11 vertical surfaces. Provide fillets on reentrant
5 angles. Trench walls, large rock, or earth will not be acce~table form material.
6
7 2.03 REINFORCING STEEL
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9 A. Reinforcing steel shall conform to ASTM A615, Grade 40, deformed bars.
10
11 2.04 PRECAST LTNITS
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9 3 A. At the option of Contractor, approved precast units may be substituted for cast-in-
14 place units. Precast units shall conform to ASTM C478 except that the dimensions
15 sha11 be as shown. Subznit details of proposed units to the Engineer for review.
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17 2.05 MORTA.R
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19 A. Standard premi~ced mortar conforming to ASTM C387, Type S, or proportion 1 part
20 Portland cement to 2 parts clean, well-graded sand which will pass a 1/8 inch screen.
21 Admixtures may be used not exceeding the following per+centages of weight of
22 cement: Hydrated lime, 10 percent; diatomaceous earth or other inert materials, 5
23 percent. Consistency of mortar shall be such that it will readiiy adhere fo the
24 concrete.
25
26 2.06 FRAMES AND GRATES
27
28 A. Frames and grates for catch basins and storm drain iniets shall be fabricated of steel
29 conforming to ASTM A48, Class 3Q in accordance with the details shown. All
30 connections shall be welded. Welding shall conform to requirements of current Code
31 For Weldi.ng in Building Construction of the American Welding Society. Bearing
32 surfaces shall be clean anci shall provide uniform conta.ct. Castings shall be tough,
33 close-grained gray iron, sou.nd, smooth, clean, free from blisters, blowholes,
34 shrinkage, cold shuts, and all defects.
35
36 PAR'I' 3 - EXECUTION
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38 3.01 EXCAVATION AND BACKFILL
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40 A. Excavation as required to accomplish the construction. $ackfill shall be as specified
41 for the adjoining pipe trench.
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43 3.02 CONSTRUCTION Ol~ CATCH BASINS AND INLETS
44
45 A. Construct inlets and catch basins at the locations shown and in accordance with the
46 drawings. Construct ~orms to the dimensions and elevations required. Forms shall be
47 tight and well braced. Chamfer corners of forms.
[yrms] 02T21 -3 CATCH BASlNS AND /NLETS 02721-3
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B. Priar to placing the concrete, remove all wate~ and debris from the forms. Moisten
forms just prior to placing concr~te. Handle concrete from the transporting vehicle to
the forms in a continuous manner as rapidly as practical without segregation or loss of
ingredients. Immediately after placing, compact concrete with a mechanical vibrator.
Limit the duration of vibra.tion to the time necessary to produce satisfactory
consolidation without causing segregation.
C. Screed the top surface of exposed slabs and walls. When the initial water has been
absorbed, float the surfaces with a wood float and lightly trowel with a steel trowel to
a smooth finish free from marks or irregularities. Finish expased edges with steel
edging tool. Remove forms and patch any defects in the concrete with mortar mixed
in the same proportions as the original concrete mix.
D. Cure concrete by preventing the loss of moisture for a period of 7 days. Accomplish
with a membrane-fornun~ curing compound. Apply the curing compound
immediately after remova~ of forms or finishing of the slabs. Protect concrete from
darnage during the 7-day cure period.
3.03 PLACING PRECAST ITNITS
A. If material in bottom of trench is unsuitable for supporting unit, excavate an.d backfill
to required grade with 3-inch minus, ciean, pit-run material. Set units to grade at
locations shown.
3.04 EXTENSIONS
A. Install extensions to height determined by Engineer. Lay risers in mortar with sides
plumb and tops to grade. Joints shall be sealed with mortar, with interior and e~cteriar
troweled smooth. Prevent mortar from drying out and cure by applying a curing
comp~und. Extensions shall be watertight.
3A5 INSTALLATION OF FRAMES AND GRATES
A. Set frames and grates at elevations indicated an the plans, or as determined in the
field and in conformance with the drawings.
B. Frames may be cast in, or shall be set in mortar.
3.06 CLEANING
A. Upon completion, clean each structure of silt, debris, and foreign matter.
END OF SECTION 02721
(yrms~ 02721-4 CATCH BAStNS AND INLETS
02721-4
SECTION 02740 - ASPHALT CONCRETE PAV/NG
PART 1- GENERAL
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as
1.01 DESCRIPTION
A. Work of this Section is bound by the Conditions of the Contract and Division 1
Specifications sections, bound herein, in addition to this Specification and
accompanying Drawings.
1.02 WORK INCLUDED
A. All subgrade preparation as specified herein ar otherwise required for installation of
new work shown or specified.
B. In general, work specified herein shall be included in the Bid. Work under this
section includes labor, supervision, equipment, tools, materials, service and
incidentals necessary for subgrade preparation.
1.03 RELATED SECTIONS
A. Section 02300 - Earthwork
1.04 QUALITY ASSURANCE
A. Standard Specifications
1. For materials and installation procedures used on the paving portion of the
project, conform to the provisions of the "Standard Specifications for Road,
Bridge, and Municipal Construction", as prepared by the Washi.ngton State
Chapter of American Public Works Association and the Washington State
Departrnent of Transportation (APWA/WSDO'1~ latest edition, except as
modified hereinafter, and hereina.i~er cailed the "Standard Specifications".
2. All references in Standard Specifications to Measurement and Payment shall be
deleted from consideration; and terms agreed to in the Contract subsdtuted
therefore.
B. Inspections 8t Tests
1. Covered hereinafter in this Section; Paragraph 3.SA, and in Section 01400.
1.05 JOB CONDITIONS
A. Weather Conditions
1. Do no paving work when raining or when subgrade or base has free water on the
surface or does not meet compaction requirements; suspend operations until
surfaces are adequately dry.
2. Apply no bituminous materials when ambient temperature is below 45 degrees F.
B. (3rade & Slopes
1. Provide even slopes, minimum 1/8" per.foot, consistent with existing abutting
paving surfaces.
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2. Standing water on surfaces will not be permitted.
3. Contractor shall fine grade all areas to be paved to subgrade elevations shown on
Drawings. Areas to be paved shall be prepazed, compacted and protected in
accordance with the Standard Specifications, except that the pavement subgrade
shall be compacted to a depth of 12 inches to 98 percent standard density.
C. Defective Work
1. Remove and replace defective pavement work, when directed by Engineer,
including surfaces without proper drainage; patching of new surfaces not
permitted.
D. Construction Survey Control
1. Contractor shall provide all construction survey control for the approvai of the
Engineer prior to construction of work under this section.
PART 2 - PRODUCTS
2.01 MATERIALS
A. Soil Sterilization Material
1. Similar to U.S. Borax "Monobar-Chlora.te (Granular)", or approved, containing
30% sodium chlora.te and 68% sodium metaborate, dry, free flowing.
B. Base Course Surfacing (Ballast)
1. Furnish under new vehiculaz asphalt pavement areas, placed over compacted
subgrade, crushed, partially crushed, or naturally occurring granular "Ba11ast"
material meeting the requirements of Section 9-03:9(1), Ballast, of the Standard
Specifications; 4-inch minimum compacted thickness unless otherwise shown on
drawings.
C. Crushed Surface Top Cowse
1. Furnish Crushed Swrfacing material over a11 base course surfacing, beneath a!1
asphalt walking paths and concrete sidewalks, meeting the requirements of
Section 9-03.9(3), Crushed Surfacing of Standard Specifications; 2-inch minimum
compacted thickness unless otherwise shown on drawings.
D. Pavement Wearing Course
1. Asphalt concrete pavement surface course shall be HMA CL1/2 PG 58-22. The
mixing and proportioning of aggregates for the asphalt concrete shall meet the
requirements of Section 9-03.8, Aggregate for Asphalt Concrete of the Standard
Specifications. Paving asphalt shall meet the requirements of Section 9-02.1(4),
Paving Asphalt of the Standard Specifications. The grade of asphalt binder shall
be as required by the contract. Prior to the submittal of the mix design, the
Contractor shail provide a written designation of the grade of PG asphalt binder to
be used. The Contractor may propose the substitution of alternate grades of
performance grade (PG) asphalt binder at no cost to the Contracting Agency. The
proposal will be approved if the proposed alternate asphalt binder has an average
7-day maximum pavement design tempera.ture that is equal to or higher than the
specified asphalt binder and has a minimum pavement design temperature that is
equal to or lower than the specified asphalt binder. The substituted alternate
grade of asphalt binder shall be used in all HMA contract items of the same class
and originally specified grade of asphalt binder. Blending of asphalt binder from
(yrms) 02740-2 ASPHALT CONCRETE PAVING
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different sources is not permitted. Production of aggxegates shall comply with the
requirements of Section 3-01.
2. Minimum compacted thickness for al vehicular paving sha11 be as noted on the
plans.
E. Tack Oil
1. Asphalt for tack coat shall be CRS-~ meeting the requirements of Section 9-
02.1(6), Cationic Emulsified Asphalt of the Standard Specifications. Tack oil
sha11 be applied to all asphalt surfaces on which any course of asphalt concrete is
to be placed or abutted.
2.02 EQUIPMENT
A. Paving Equipment
1. Sha11 be spreading, self-propelled machine capable of mai.ntaining line, grade and
course thickness indicated. Spreader box or manual methods may be used in
small patch areas.
B. Compacting Equipment
1. Sha11 be steel wheel, pneumatic tired or vibrating ruller. Use hand operated
mechanical vibrators in small patch azeas.
PART 3 - ~XECUTION
3.01 INSPECTTON
A. Inspection of Prior Work
1. Cazefii~lly inspect the instailed work of all other tcades and verify that all such
work is complete to the point where this installation may properly commence.
2. In the even~ of discrepancy, immediateiy notify the Engineer.
3. Do not proceed with installation in areas of discrepancy until a11 such
discrepancies have been fully resolved.
3.02 PREPAR.ATION
A. Protection
1. Protect existing site improvements from damage by paving work.
2. Install barricades to keep trafl'c away from paving work.
B. Existi.ng Pavement
~. A1~ cut eages of extstirzg pavement where new pavement is to abut sha]] b~ saw-
cut so edges are neat and straight, as approved by Engineer.
C. Excavatio~
1.. Areas for asphalt concrete paving shall be excavated as necessa.ry to the grade
established for the bottom of the ba~last base and the excess material shall be
d~sposed of off site as dire~ted.
D. Subgrade Preparation
1. Prepare the subgrade in accordance with Section 2~06,3(1), Subgrade for
Surfacing of the Standazd Specifications.
(yrms~ 02740-3 ASPHALT CONCRETE PAVING
Q2744-3
2. Compaction sha11 achieve 98% of the ma~mum density to a depth of 12 inches
deternlined under the tests described in Section 2-03.3(14)I3, Compaction Control
Tests of the Standard Specifications.
E. Application of Soil Sterilization Solution
1. Apply in water solution over all subgrade areas to ~eceive ballast base for asphalt
pavement; solution mix shall be 1 pound per gallon of water and spread on at rate
of 2 gallons of solutian per 100 square feet.
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3.03 ASPH.A,LT PAVEMENT PLACEMENT
A. Base Course Surfacing (Ballast)
1. The gra.vel ballast course shall be placed to the minimum compacted depth
specified on the plans, placed over the full areas shown on the Drawings for new
work confarm to ahave requirement5 af paragraph 2.O1B.
2. Spread and compact to ni.nety-five percent (95%) o~the maximum density all in
conformance with Section 4-02, Gravel Base of the Standard Specifications.
B. Crushed Surface Top Course
1. The crushed rock coursing shall be placed to the minimum compacted depth
specified on the plans, piaced over all base caur5e surfacing areas and aver proof
rolled and compacted native surfaces that will receive asphalt pathways and
concrete sidewalks; conform to above requirements of paragraph 2.01 C.
2. Spread and compact to ninefiy-five (9S%) of the maximum density' all in
conformance with Section 4-04, Ballasting and Crushed Surfacing of the Standard
Specifications.
C. Tack Oil
1. Apply tack coat asphalt at the rate of 0.02 to 0.06 gallons per square yard to in-
place asphalt and concrete contact surfaces where new pavement joins e~usting
and along curbs and gutters..
D. Asphalt Concrete Pavement
1. The asphalt concrete pavement wearing course shall be consh~ucted in accordance
with Section 5-04, Asphalt Concrete Pavement of the Standard Specifications.
Section 5-04.3(9), Spreading and Finishing of the Standard Speci~cations shall
apply except that the nominal compacted depth for paving areas shall be 2 inches
or as otherwise indicated on Civil drawings.
2. Slope a1I paving smoothiy to catch basins and to elevations or grades shown on
Drawings and consistent with existing adjacent pavement surface grades. Pre-
level any depressed areas as required to produce a finished surface that does not
vary by more than. %4" in l Oft. Stand.ing water will r~ot be peranitted on any paved
surface and any corrective measures will be the responsibility of tlie Contractor
using methods approved in advance by the engineer.
3. Contractor shall feather. the asphalt concrete pavement overlay in a manner to
produce a smooth ridirig connection to the existing pavement. All feathered joints
and saw cut joints shall be sealed with AR-400U and topped with sand as directed
by the Engineer. Asphalt concrete pavement Class B utilized in the construction
of feathered connections to existing pavement shall be modified by eliminating
the coarse aggregate firom the mix at the Contractor's plant or the commercia.l
source from which the Contractor obtains the mix or by raking the joi.nx on the
roadway, to the satisfaction of the Engineer.
[yrms] 027'40-4 ASPHA4T CONCRETE PAVING 02740-4
4. where utility trenches require pavement patching, the pavement restoration shall
be performed in accordance with the Washington Department of Transportation.
3.04 Tolerances
A. General
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l. Surface Smoothness for Velucular and Pedestrian Paving: Maximum variation
from the lower edge of a 10-foot straight edge shall be as follows:
a. Parallel to centerline: 1/8-inch
b. Transverse slope: '/a-inch
2. Section Thickness: Section thickness shall not deviate more than'/a inch from the
design section.
3. Correction of Defective Work: Conform to applicable provisions of the Contract
Documents. Contractor shall correct defective work to the sa.tisfaction of the
Engineer.
3.05 FIELD QUALITY CONTROL
A. Inspections & Tests
1. General: Field inspection and testing shall be performed under provisions of
Section 01400. Contractor shall comply with the requirements of the Owner's
testing and inspection agency.
2. Inspections: Owner may employ the services of an independent inspection
services to inspect work of this Section for conformance with the Contract
Documents and may conduct tests as follows:
a. Conduct nuclear density gauge testing in conformance with Section 5-
04.1(10)B, Control of the Standard Specifications.
b. Frequency of Testing: As required for testing laboraiory to certify compliance
with the Contract Documents.
3.06 PROTECTION
A. General
1. Immediately after placement, protect pavement from mechanical injury.
2. Erect barriers and warning signs as necessary to prevent vehicular brat~ic on new
pavement until pavement can support loads and movement without damage.
END OF SECTION 02740
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SECTION. 02750 - PORTLAND CEMENT CONCRETE PAVEMENT CURBS AND
PART 1 - GENERAL
1.1 DESCRIPTION OF WORK
A. This Section includes exterior Cemeat Concrete Pavement and Cement Concrete
Curb construction and a.ll related pavement and curb construction materials and
methods where shown on the Contract Drawings.
1.2 RELATED SECTIONS
A. Section 02220 - Site Demolition and Ciearing & Prepararion
B. Section 02300 - Earthwork
C. Section 02315 - Trenching, Backfilling and Compaction for Utilities
D. Section 02740 - Asphalt Concrete Pavement
E. Section 02750 - Portland Cement Concrete Pavement, Curbs, and Sidewalks
F. Section 02721 - Catch Basins and Inlets
G. Section 02630 - Stormwa.ter System
1.3 REFERENCES
A. The most current version of the Standard Specifications for Road, Bridge, and
Municipal Construction as published by the Washington State Department of
Transportation (WSDO'1~, hereby referred to as The WSDOT Standard
Specifications, Note that Division 1 of the WSDOT Standard Specifications shall
not apply to this project.
B. The Standazd Plans for Road, Bridge, and Municipal Construction, most recent
edition, as published by the Washington State Department of Transportation
(WSDOT), hereby referred to as the WSDOT Standard Plans.
C. The American Society for Testing and Materials, ASTM.
D. ACI 301, Specification for Structural Concrete.
1.4 QUALITY ASSURANCE
A. All Cement Concrete Pavement construction shall conform to the requirements of
Section 5-OS of the WSDOT Standard Specifications, except as noted herein. All
references to measurement and payment shall be deleted, and the terms agreed to in
the Contract shall be substituted therefore.
B. All Cement Concrete Curb construction shall conform to the requirements of Section
8-04 of the WSDOT Standard Specifications, except as noted herein. All references to
[yrms) 02750-1 PORTI.AIVD CEMENT CONCRETE PAYEMENT, CURBS AND SIDEWALKS 02750-1
~ measurement and payment shall be deleted, and the ternis agreed to in the Contract
2 shall be substituted therefore.
3 C. All Cement Concrete Sidewalk construction shail conform to the requirements of
4 Section 8-14 of the WSDOT Standard Specifications, except as noted herein, and
s except that all references to measurement and payment shall be deleted, and the terms
6 agreed to in the Contract shall be substituted therefore.
~ D. Manufacturer Qualifications: Manufacturers of ready-mixed concrete products for
8 tlus project shall comply with ASTM C94-98 (Standard Specifications for Ready-
9 Mixed Concrete) for a11 concrete materials and co~crete production facilities.
1o E. This project sha11 use only materials which are listed in the most recent edition of the
11 Washington State Qualified Products List (QPL) published by the WSDOT Materials
12 Laboratory, if the QPL conta.ins an enhy for such materials.
13 F. Testing Agency Qualifications: The Contractor's testing agency shall be an
t 4 independent agency qualified in accordance with, and meeting the requirements of,
~ s ASTM C 1077-98 and ASTM E 329-98 for the testing indicated, as documented in
16 accordance with ASTM E 548-94.
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18 1.5 SUBMITTALS
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2o A. Manufacturer's materiai and product data: Submit a11 manufacturer's printed material
21 and product data which the manufacturer provides for review purposes for a11
22 materials to be incorporated into the finished work.
23 B. Material Safety Data Sheets (MSDS): Submit a11 MSDS information, highlighting
24 VOC limits if available.
25 C. Design Mixtures: Submit mix designs for a11 concrete mixtures furnished, including
26 alternate mix designs which may be required to adjust for weather, project conditions,
27 and test results. T'he Contractor shall propose any modifications to the design mix
28 required to prevent shrinkage cracking and excessive edge slump.
29 D. Material Test Reports: Submit test reports from a qualified testing agency indicating
3o and interpreting test results for compliance of the following with requirements
31 indicated, based on comprehensive testing of current materials.
32 1. Aggregates: Include service record data indicatin~ absence of deleterious
33 expansion of concrete due to alkali-aggregate reactivity, including alkali-silica
34 reactivity.
35 2. Compressive and flexural strength testing for all concrete mix designs for
36 concrete to be used in Cement Concrete Pavemen~
37 E. Material Certificates: Submit material certificates signed by manufacturers certifying
38 that each of the following materials complies with requirements:
39 1. Cementihous materials.
40 2. Admixtures.
4 ~ 3. Joint Fillers.
42 4. Joint Sealants.
[ym-s] 0275U-2 PORTLAND CEMENT CONCRETE PAVEMEN7; CURBS AND SIDEWALKS 02750-2
1 F. Field quality control test reports: Submit test reports showing the results of
2 compressive strength testing, slump testing, and air content for a11 Portland Cement
3 Concrete tests specified.
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5 1.6 CONSTRUCTION SURVEY CONTROL
~ A. The Contractor shatl supply construction survey control for approval of the Engineer
8 prior to construction. The Contractor shall coordinate to obtain the Engineer's
9 inspection of all formwork grades and alignment at least 24 hours prior to the
to placement of concrete at each location where concrete is to be placed.
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12 1.7 DEFECTIVE WORK
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t4 A. Cracked pavement and cracked curbs will be rejected. The Contractor shall determine
t5 and shall implement methods for protecting the completed pavement and curbs and
16 preventing cracking of the completed work. The Contractor shall remove and replace
17 cracked and defective pavement panels and curbs as described in this specification,
18 and no additional payment will be allowed therefore.
19 B. Pavement without positive drainage will not be acceptable. The Contractor shall
2o maintain a minimum slope to drain as shown on the Contract Drawings, or a
21 minimum slope of 1:100 where there is no slope shown. The Contractor shall remove
22 and replace pavement panels which are flatter than 1:100 to the nearest point of
23 drainage as described in this specification, and no additional payment will be allowed
24 therefore.
25 C. Cracked sidewalks will be rejected. The Contractor shall determine a method for
26 protecting the completed sidewalks and preventing cracking of the completed work.
27 The Contractor shall remove and replace cracked or otherwise defective Cement
28 Concrete Sidewalk panels as described in ttus specification, and no additional
29 compensation wi11 be allowed therefore.
3o D. Cement Concrete Sidewallcs without positive drainage will be rejected. The
3 t Contractor shall maintain a minunum slope to drain as shown on the Contract
32 Drawings. The Contractor sha11 remove and replace Cement Concrete Sidewalk
33 panels which do not meet the minimum slope requirements, and no additional
34 compensation will be allowed therefore.
35 E. Cement Concrete Sidewalks which do not meet the requirements for finished color
36 and texture will be rejected. The acceptable color and texture will be established by
37 matching the existing sidewalk as described herein.
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41 A. The Contractor's Testing Agency shall conduct Field Quality Controi Testing in
42 accordance with the test methods specified in Section 6-02.3(5)D of the Standard
43 Specifications.
[yrms] 02750-3 PORTLAND CEMENT CONCRETE PA VEMENT, CURBS AND SIDEWALKS 02750-3
1 B. The Contractor's Testing Agency shall conduct one set of quality control tests of
2 concrete placed at the jobsite for Cement Concrete Pavement, for Cement Concrete
3 Curbs, and for Cement Concrete Sidewalk for each day Concrete is placed at the
4 jobsite. One set of tests shall consist of the following:
5 a. Three (3) cylinders for compression strength testing at seven (7) days.
6 b. Three (3) cylinders for compression strength testing at twenty-eight (28) days.
7 c. One test for Concrete slump.
8 d. One test for entrained air.
1o PART 2 - PRODUCTS
t~
t2 2.1 BALLAST AND CRUSHED SURFACING
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t4 A. Ballast (if shown on the Contract Drawings) shall conform to the requirements of
1 s Section 9-03.9(1) of the WSDOT Standard Specifications.
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17 B. Crushed Surfacing Top Course shall conform to the requirements of Section 9-03.9(3)
1s of the WSDOT Standard Spec~cations.
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20 2.2 CONCRETE MATERIALS
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22 A. All materials shall be products listed on the WSDOT Qualified Products List (QPL)
23 unless altemative materials are specified.
24 B. Concrete for Cement Concrete Pavement shall provide a minimum flexural (beam)
25 strength of 650 psi at 14 days based on statistically analyzed results of 5 beam
26 specimens and sha11 meet a11 requirements of Section 5-05.2 and Section 5-05.3(1) of
27 the WSDOT Standazd Specifications. The Engineer will deterinine a conversion
28 between compressive strength and flexural (beam) strength, which shall then be used
29 to determine an acceptable minimum compressive strength.
3o C. Concrete for Cement Concrete Curbs shall be air-entrained Class 3000 concrete
31 meeting the requirements of Section 8-04.2 and 8-04.3(1) of the WSDOT Standard
32 Specifications.
33 D. Concrete for Cement Concrete Sidewalks shall be air-entrained Class 3000 concrete
34 meeting the requirements of Section 6-02 of the WSDOT Standard Specifications.
35 E. Portland Cement Materials shall conform to the requirements of Section 9-01 of the
36 WSDOT Standard Specifications.
37 F. Aggregates for Cement Concrete Pavement and Cement Concrete Curbs shall
38 conform to the requirements of Section 9-03 of the WSDOT Standard Specifications.
39 G. Pre-molded Joint Filler shall conform to the requirements of Section 9-04.1 of the
4o WSDOT Standard Specifications.
41 H. Dowel bars (smooth bars) shall be 18-inches long and shall be furnished and installed
42 where shown on the Contract Drawings. Dowel Bars shall be installed in bar cages
43 with each cage containing a minimum of four (4) bars and minimum cage length of 6
44 feet. Bent, short, or otherwise defective cages vv~ll be rejected.
[yrms) 02750-4 PORTLAND CEMENf CONCRETE PAYEMENT, CURBSAND SIDEWALKS 02750-4
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I. Tie bars (deformed bars) shall be 30-inches long and shall be furnished and installed
where shown on the Contract Drawi.ngs.
J. Joint sealant for Cement Concrete Pavement sha11 be two-component ~oured rubber
joint sealer as specified in Section 9-04.2(2) of the Standard Specifications. Furnish
sealant in gray color.
K. Concrete Curing Materials and admixtures shall conform to the requirements of
Secrion 9-23 of the WSDOT Standard Specifications, except that the only acceptable
method of curing shall be by the use of white or clear 8-mil polyethylene sheeting as
described below.
2.3 FORMS
A. Forms for Cement Concrete Pavement shall meet the requirements of Section 5-
05.3(7)B of the WSDOT Standard Specifications, except that wood forms will not be
allowed. All forms shall be free of warping and dents.
B. Forms for Cement Concrete Curbs sha11 meet the requirements of Section 8-04.3(1) of
the WSDOT Standard Specifications, except that wood forms will not be allowed.
All forms shall be free of warping and dents.
C. Forms for Cement Concrete Sidewalks shall meet the requirements of Section 8-
14.3(2) of the WSDOT Standard Specifications. All forms shall be free of warping
and dents.
2.4 CONCRETE CURING MATERIALS
A. Concrete Curing Material sha11 be white, 8-mil polyethylene sheeting.
2,5 JOINT SEALANT FOR SIDEWALKS
A. Joint Sealant for Cement Concrete Sidewalks sha11 be two-component poured rubber
joint sealant as specified in Section 9-04.2(2) of the Standard Specifications. Furnish
sealant in a light or dark gray color which matehes the color of the finished walkway,
or as directed by the Owner.
PART 3 - EXECUTION
3.1 E~~AMINATION
A. Verify that subgrade is firtnly compacted, smooth, and thoroughly watered but not
saturated with moisture, and that forms are correctly aligned prior to placing concrete.
Proceed to place concrete only after all unsatisfactory conditions have been corrected,
and all access structures have been raised to grade.
3.2 PROTECTION OF EXISTING IMPROVEMENTS
(yrms) 02750-5 PORTLAND CEMENT CONCRETE PAVEMENT, CURBS AND SIDEWALKS 02750-5
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A. The Contractor shall be responsible for protecting existing utilities and shall be
responsible for any damage to existing utilities where such utilities are not shown to
be removed, demolished, or abandoned. The Contractor shall contact the
underground utility locating service at least 48 hours prior to construction. The
Contractor shall coordinate with the owners of adjacent utilities regazding the exact
location of utility lines.
3.3 REMOVAL OF EXISTING PAVEMENT AND CURBS
A. The Contractor shall sawcut fiill depth, remove and dispose of existing concrete
pavement and curbs as waste materials where existing pavement and curbs are in
conflict with the proposed construction. The Contractar shall manage waste materials
in accordance with Section Ol 575 of the Contract Documents.
3.4 REMOVAL OF EXISTING CONCRETE SIDEWALKS
A. The Contractor shall sawcut, remove and dis~pose of existing sidewalk materials as
waste materials where such sidewalks conflict with the proposed improvements.
Waste materials sha1l be disposed of in accordance rvrth waste management
procedures specified in Section 01575 of the Contract Documents.
3.5 ROADWAY EXCAVATION AND EMBANKMENT AND HAUL
A. The Contractor shall complete Roadway Excavation and Embankment in
conformance with Section 8-14.3(1) and Section 2-03 of the WSDOT Standard
Specifications, except that the provisions of Section 2-03.3(2) shall not apply.
B. Excavate to the lines, grades, and dimensions shown and as necessary to accomplish
the work. Excavate to within a tolerance of plus or minus 0.1 foot. Allow for forms,
working space, and base materials.
C. Embankment Compaction shall be completed in accordance with Method B of
Section 2-03.3(14)C ofthe WSDOT Standard Specifications.
D. The Contractor shall complete Haul in conformance with Section 2-04 of the
WSDOT Standard Specifications for all soil materials which are not required for the
completed installation.
3.6 SUBGRADE PREPARATION
A. The Contractor shall complete Subgrade Preparation in conformance with Section 2-
06 of the WSDOT Standazd Specifications.
3.7 BALLAST AND CRUSHED SURFACING
A. The Contractor shall construct Ballast (if shown on the Contract Drav~ngs) and
Crushed Surfacing for pavement construchon in accordance with Sectian 404 of the
[yrms] 02750-6 PORTLAND
PAVE1l1ENT, CURBSAND SIDEWALKS 02750-6
1 WSDOT Standard Specifications, and to the lines, grades, and depths shown on the
2 Contract Drawings.
3 B. T'he Contractor shall place and compact Crushed Surfacing Base Material for Cement
4 Concrete Curb and Cement Concrete Sidewalk construction in accordance with
5 Section 4-04 of the WSDOT Standard Specifications, and to the lines, grades, and
6 depths shown on the Contract Drawings.
~ C. The Contractor shall insure that the final lift of Crushed Surfacing is placed in
8 accordance with Section 4-04.3(5) of the Standard Specifications. The final lift of
9 surfacing material shall be compacted to a smooth surface with a maximum allowed
l0 deviation of'/4-inch from straight-grade prior to concrete placement.
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12 3.8 ACCESS STRUCTURES EMBEDDED IN PAVEMENT
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14 A. The Conhactor shall adjust to grade all access structures to be embedded in pavement
i s and sidewalks. Access structures sha11 include, but will not be iimited to valve cans,
t6 meter boxes, junction and s~lice boxes, and manhole rims and lids. Such items shall
» be adjusted to be set flush with the finished surface.
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19 3.9 FORMIl~TG FOR CONCRETE
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21 A. Forming for Cement Concrete Pavement shall meet the requirements of Section 5-
22 05.3(7)B of the WSDOT Standard Specifications.
23 B. Forming for Cement Concrete Curbs shall meet the requirements of Section 8-Q4.3(1)
24 of the WSDOT Standard Specifications.
25 C. Forming for Cement Concrete Sidewalks shall meet the requirements of Section 8-
26 14.3(2) of the WSDOT Standazd Specifications.
27 D. Wherever concrete is to be placed against an e~cistin~ structure, the Contractor shall
28 place pre-molded expansion ~omt filler against the existmg structure to the full depth
29 of either the existing structure th~ pavement, the sidewalk, or the curb, whichever is
30 less. The ~avement, sidewal~C, or curb will be formed against the expansion joint
31 filler matenal. The joint filler sha11 be cut and warped as required to tight~y conform
32 to the irregularities of the existing structure.
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34 3.10 DOWEL BARS AND DOWEL BAR CAGES
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C.
Dowel bars (smooth bars) shall be installed at all transverse conshuction and
contraction joints, except where directed otherwise by the Engineer.
Dowel bar cages shall be used to support all dowel (smooth~ bars. Dowel bars shall
be firmly welded or wired into the cages, such that the entue cage can be lifted by
lifting up one bar. Cages which are bent or deformed shall not be used and will be
rejected by the Engineer in the field. Rejected bar cages shall be removed from the
pro~ect site by the end of the same day they are rejected. Attempting to straighten baz
cages m the field will not be acceptable.
Dowel bars shall receive a heavy coating of axle grease around their full
circumference and length on the same da.y they are to be incorporated into the finished
pavement.
[yrms) 02750-7 PORTLAND CEMENT CONCRETE PAVEMENT, CURBSAND SIDEwALKS 02750-7
1 D. Dowel baz cages shall be correctly designed to provide support for the dowel bars at
2 the correct depth within the finished concrete pavement slab. All dowel bars shall be
3 installed approximately parallel with the street centerline, and exactly parallel to the
4 finished pavement surface.
5 E. Workers shall not step on dowel bars or dowel bar cages after they have been placed
6 on the prepared base materials.
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8 3.11 TIE BARS AND SUPPORT OF TIE BARS
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lo A. Tie bars (deformed bars) shall be installed at all longitudinal construction and
11 contraction pavement joints, except where directed otherwise by the Engineer. When
12 the Engineer directs tie bars not to be installed, those bars shall remain onsite for
13 installation at other miscellaneous locations, where directed by the Engineer.
l4 B. Tie bars shall be installed by one of three methods: 1. By attaching them to the
~5 construction forms at longitudinal construction joints. 2. By attaching them to
16 supporting tie bar cages or chairs at longitudinal contraction joints, or 3. By drilling
17 and grouting them into place. Tie bars shall not be drilled inta concrete which is less
18 than 48 hours old, as measured from the time the final finish was applied.
19
20 3.12 PLACING AND FINSHING CONCRETE
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22 A. The Contractor sha11 place and finish Cement Concrete Pavement in accordance with
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Section 5-OS of the WSDO
24 pavement finish sha11 be a light broom fuush in the transverse duection.
25 B. The Contractor sha11 place and finish Cement Concrete Curbs in accorda.nce with
26 Section 8-04 of the WSDOT Standard Specifications.
27 C. The Contractor shall lace and shall finish Cement Concrete Sidewalks in accordance
28 with Section 8-14.3(~ of the WSDOT Standard Specifications:
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30 3.13 JOINTS FOR CONCRETE PAVEMENT AND CURBS
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32 A. Construction and Contraction Joints for Cement Concrete Pavement shall be
33 constructed in accordance with Section 5-OS of the WSDOT Standard Specifications
34 and as shown on the Contract Drawings, except where directed otherwise by the
35 Engineer. When joint spacing,is not shown on the Contract Drawings, the Contractor
36 shall space the joints on a maximutn of 15-foot centers at the locations directed by the
3~ Engineer in the field at the time of construction.
38 B. Joints in Cement Concrete Curb sha11 be spaced on approximately 15-foot centers and
39 where shown on the Contract Drawings. All ~omts shall be constructed to the full
4o cross section height and width of the curb. Joints m the curb shall be as shown on the
41 plans (if shown) and sha11 be coincident with the joints in the pavernent, except where
42 the Engmeer directs otherwise.
43 C. All joints shall be tooled smooth and thoroughly cleaned of loose debris and concrete
44 prior to applying sealant.
45 D. Expansion joints for Cement Concrete Sidewalk shall be constructed as shown on the
46 Contract Drawings, except where changes aze required to match the existing joints.
[yrms) 02750-8 PORTLAND CEMENT CONCRETE PAYEMENT, CURBS AND SIDEWALKS 02750-8
E. The Contractor shall use the details shown on the Contract Drawings for estimation
purposes only. The exact location of expansion joints and score lines shall be as
directed by the ~wner at the time of cor~st7uction. The Conrra~tor sha11 rec~uest such
direction at least 48 hours priar to concrete placement.
6 3.14 CURING
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A. The Cantractor shal] perform curmg of Cement Concrete Pavement in accordance
with Section 5-05.3(13)B of the WSDO'~ Standard Specifications, except that the
curing period shal~ be for at least six (6) days, regardless of the compressive strength
final concrete finis~i. Poly.ethylene sheeting shall complefely cover a11 exposed
concrete surfaces, including the sides, and shall be weighted with sandbags, tires, or
other mear~s to seal the edges: prevent ~iftin~ by wind, and retain moisture.
Polyethylene sheeting shall xemain m place dunng the entire curing period. The
Contractor shall perform dai~ly maintenance of the sheeting to prevent lifting and
exposure of the concrete.
B. The Contractor sha11 erform curing of the Cement Concrete Sidewalk in accordance
with Section 8-14.3(~ of the WSDOT Standard Specifications, except that the curing
period shall be for at least four (4) days, and except that the only acceptable curing
method sha1l utilize poiyethytene sheefmg. Polyethyiene sheeting shatl be placed
within one (1) hour of obtainuig the final concrete finish.
C. The Contractor shall perform curing of Cement Concrete Curbs utilizing the same
method described above, except that the curing period shall be for at least three (3)
days. Polyethylene sheeting s~all remain in place during the entire curing period.
D. Polyethylene sheeting shall completely cover all exposed concrete surfaces, including
the sides, and shall be weighted with sandbags or other means to seai the edges,
prevent lifting by wind, and zetain moisture. The sheeting shall be arranged without
flat and flush with the concrete to be cured, without wrinkle~ or folds.
E. During the curing period for both Concrete Pavement and Concrete Curbs, all
pedestrian and velucular traff'ic sha11 be positively excluded from access to the
pavement and curbs. The Contractor shall erect WSDOT Type III barricades and
cones, and use any other means as requir~ct to insure that traffic of all types is
excluded from travel on the completed work for the s ecified curing period. Type III
barricades across roadways shall be furnished in su~cient quantity to leave no more
than a two foot gap between barricades and to completely block all vehicular and
pedestrian tra.ffic.
3.15 PAVEMENT REPAIRS
A. Where contractor-furnished repairs are r~quired, such repair shall require the
complete removal and re~lacement of the dama~ed Cement Concrete Curb or Cement
Concrete Sidewalk section(s) to the nearest ~omt. Patching of curb or sidewalk
sections will not be accep table. Where xequired for a straight match line, the
Contractor sha..ll sawcut sidewalk sections to accomplish the complete removal of the
damaged sections.
B. Where pavement repairs are required due to defective pavement, such repair sha11
require the complete removal and replacement of the damaged panel(s) to the nearest
longitudinal and transverse joint, and no additional payment will be allowed therefore.
Patching of panels will not be acceptable. Where requ~red for a straight match line,
(yrms] 02750-9 PORTLAND CEMENT CONCRETE PAVEMENT, CURBS AND SIbEWALKS 02750.9
1 the Contractor sha11 sawcut pavement panels to accomplish the complete removal of
2 the damaged panels.
3
4 3.16 JOINT SEALANT
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6 A. Prior to the application of joint sealant, the Contractor sha11 pressure-wash and
7 thoroughly dry a11 joints.
8 B. The Contractor sha11 apply joint sealant where specified on the Contract Dra.wings in
9 accordance with the manufactiurer's written installation instructions.
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ii
12 END OF SECTION 02754
13
[yrms] 02750-10 PORTL;4IVD CEMENT CONCRETE PAVEMENT, CURBS AND SIDEWALKS 02750-10
1 SECTION 02765 - S/GNS AND PAVEMENT MARKINGS
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PART 1- GENERAL
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1.01 DESCRIPTION
A. General Requirements
1. Drawings and general provisions of the Contract Documents including General,
Special and other Conditions and Division 1, "General Requirements" Sections,
apply to the work specified in this Section.
1.02 WORK INCLUDED
A. All subgrade preparation as specified herein or otherwise required for installation of
new work shown or specified.
B. In genera.l, work specified herein shall be included in the Bid. Work under this
section includes all labor, supervision, equipment, tools, materials, services and
incidentals necessary for signs and pavement markings.
1.03 RELATED SECTIONS
A. Section 02220 - Site Demolition and Clearing & Preparation
B. Secrion 02300 - Earthwork
C. Section 02315 - Trenching, Backfilling and Compaction for Utilities
D. Section 02740 - Asphalt Concrete Pavement
E. Section 02750 - Portland Cement Concrete Pavement, Curbs and Sidewalks
F. Section 02721- Catch Basins and Inlets
G. Section 02630 - Storrnwater System
1.04 QUALITY ASSURANCE
A. Standard Specifications
1. MUTCD: Except as otherwise specified, the work under this Section shall
conform to the pmvisions and details of the "Manual on Uniform Traffic Conform
Devices", latest Edition, hereinafter called "MUTCD"
2. Provide approved stencils for arrows, lettering and symbols in accordance with
applicable City, State and Federal Regulations.
1.05 PRODUCT DELNERY, STOR.AGE & HANDLING
A. Delivery & Storage of Materials
1. Deliver paints and solvents in unopened original containers with original labels
thereon; keep sealed until containers and materials have been approved by
Engineer.
2. Store materials in approved safe azea; mix and thin only as recommended by
mat~ufacturer.
[yrms] 02765-1 SIGNS AND PAVEMENT MARKINGS 02765-1
1.06 JOB CONDITIONS
A. Protection
1. Erect barriers so that paint is not driven over or walked upon until paint is
completely dry and fully cured.
PART 2 - PRODUCTS
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2.01 MATERIALS
A. Traffic Line Paint
1. Material: Furnish chlorinated rubber base traffic paint, conforming to Federal
Specifications TT-P-115E, M-E-I solvent type, colors as specified herein for each
~3'~•
2. Approved Manufacturers/Products:
a. General: Tru-Test Supreme Zone Marking Paint
b. Glidden: Traffic Zone Paint
c. Miller: Traffic Line Paint
d. P.P.G. Industries: Pittsburgh Traffic and Zone Marking Paint
e. Rodda: Traffic Paint
B. Street, Tra~c, Waming and Information Signs
I. All street, traffic, warning and information signs shall be configured in
accordance with MLTTCD and the plans.
2. All signs shall be supported on sign posts constructed in accordance with City of
Yelm Zoning Code.
2.02 EQUIPMENT
A. Spray Equipment
1. Use only approved pneumatic spraying machine, manufactured for pavement
paint striping, fitted with an atomizing nozzle capable of applying stripes of
widths shown.
2. Operate spraying equipment by means of quick opening valves and pressure
regulators and gauges located in reach and view of operator.
B. Stencils
1. Use plywood, hardboard or metal stencils, neatly fortned, of size as approved by
the Engineer.
2. Provide approved stencils for arrows, symbols and lettering.
3. Provided approved stencils for handicapped symbols in accordance with Sta,te and
Federal Regulations.
PART 3 - EXECUTION
3.01 PREPARATION
A. Preparation of Surfaces
1. Clean all surfaces to receive striping or mazking to be free of dirt, oil and loose
material; surfaces to be thoroughly dry.
(ym,s) 02765-2 S/GNS A111D PAVEMENT MARKlNGS
02765-2
B. Striping Layout
I. Adequately mark on pavement with chalk or other material that may be easily
brushed or washed off.
2. Obtain approval of Engineer before applying paint.
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3.p2 APPLICATION
A. Paint Application - General
1. All straight lines to be straight, in locations shown, curved lines to true radii.
Stripe widths shall not vary more than plus or minus '/a inch.
2. Paint shall be applied at a rate of 80 square feet per gallon (approximately 20 mils
wet thickness). An allowable toleranc~ not to exceed minus 10% shall be
permitted for film thiclrness or yield in paint application.
3. All painted surfaces free of holidays with nea.t, clean edges and ends.
4. Perform all work by mechanics skilled in operatian of spraying equipment.
B. Striping
1. Striping sha11 be applied in the locations and to the dimensions shown on
Drawings, except as otherwise noted, and shall consist of straight solid lines of
white tra~c pa.int.
2. Crosswalk stripes shall be in accordance with City of Yelm Zoning Code.
3. Pedestrian drop-off azea stripes shall consist of solid white warning stripes 12
inches in width and spaced at 36 inches center to center, oriented at 15 degrees to
the cwb face and in lengths indicated on the plans.
4. Fire lane curb striping shall be in accordance with City o€ Yelm Fire Departmant
Standards.
C. Lettering
1. Provide drop-off area and fire lan~ painted iettering as shown on the plans,
consisting of white color traffic paint, 12 inches lugh using 2 inch brush strokes.
2. Lettering shall be places so that it is aligned parallel with the pavement edge.
3.03 FIELD QUALITY CONTROL
A. Defective Work
1. Repla,ce, in ma.nner approved by Engineer and without damage to surface and at
no additional cost to Owner, all work considered defective by Engineer; defective
work to include mis-painted lines, checking, cracking, peeling, discoloration, and
lack of bonding of paint.
2. Normal traffic wear will not be considered a defect in the work.
END OF SECTION 02765
(yrms~ 02765-3 SIGNS AlVD PA~/EMENT MARKINGS 02765-3
November 19, 2003
Use Designations for Vortechnics Inc.'s Vortechs System
Apnlicant: Vortechnics, Inc.
Annlicant Address: 200 Enterprise Drive
Scarborough, ME 04074
Annlication Documents: Vortechs System Conditional Use Approval Application Letter
to the Washington State Department of Ecology (June 25, 2003)
Vortechs Stormwater Treatment System Technology Report,
June 2003
Technical Appendices 1 through 16
Applicant's Use Level Request: Conditional Use Designation as a Basic Treatment device in
accordance with Ecology's 2001 stormwater manual.
Annlicant's Performance Claims: Based on laboratory trials, the Vortechs System will achieve an
80% TSS removal efficiency, for sediment particles ranging
from 38 to 75 microns, at an operating rate of 13 gallons per
minute per square foot (GPM/sfl at the peak flow for the
Ecotogy design treatment storm.
The system is recommended only for sites likely to produce
relatively high TSS concentrations (above 100 mg/L), where
TSS is primarily composed of 50 microns and larger. Potentially
appropriate sites include parking lots, highways and urban
streets, material transfer sites, hydrocarbon transfer sites,
retrofits, steep/erosive sites, and space-limited sites.
Ecologv's Decision: Based on the applicant's submissions and the Technical Review
Committee's (TRC) reco~nmendations (see below), Ecology
hereby issues the following use designations for the Vortechs
technology:
1. General Use Level Designation (GULD) for pretreatment
use, as defined in the Ecology Manual Volume I, (a)
ahead of infiltration treatment, or (b) to protect and
extend the maintenance cycle of a Basic or Enhanced
Treatment device (e.g., sand or media filter). This
GULD applies to Vortechs units sized at an operating rate of
no more than 35 gpm/sf aT the Water Quality design flow
rate as determined using the Western Washington Hydrology
Model (WWHM).
2. Pilot Use Level Designation (PULD) for oil and grease
treatment. This applies to Vortechs units sized at an
operating rate of na more than 13 gpm/sf at the Water
Quality design flow rate as determined using the WWHM.
This PULD expires on August 1, 2006 unless extended by
Ecology.
3. Properly designed and operated Vortechs systems may also
have applicability in other situations (example: low-head
situations such as bridges or ferry docks), for TSS and
oil/grease removal where, on a case-by-case basis, it is found
to be infeasible or impracticable to use any other approved
practice. Local jurisdictions should follow established
variance or exception procedures in approving such
applications.
4. Ecology finds that the Vortechs may also be appropriate
when used:
o To provide water quality benefits in retrofit
situations.
o As the first (primary or pre-treatment) component in
a treatment train.
o To capture and retain deicing grit/sand.
Ecolo¢v's Conditions of Use:
Technical Review
Committee's Recommendations
To Ecolo6v:
1. Vortechs Systems must be designed, assembled,
installed, operated, and maintained in accordance with
Vortechnics, Inc.'s applicable manuals and documents
and the Ecology Decision.
2. On or before December 31, 2003, Vortechnics shall
submit a QAPP that meets the TAPE requirements for
attaining a GULD for oil and grease removal.
3. Local jurisdictions must file a"Pilot Level Technologies
Notice of Intent" form with Ecology prior to authorizing
Vortechs for a PULD application. All facilities installed
under a PULD must monitor oil and grease in
accordance with the Ecology-approved QApP.
4. Vortechnics, Inc. shall complete all required testing and
submit a TEER for TRC and Ecology review by
December 2005.
5. Vortechnics, Inc. may request Ecology to grant deadline
or expiration date extensions, upon showing cause for
such extensions.
6. Discharges from the Vortechs System shall not cause or
contribute to water quality standards violations in
receiving waters.
The TRC finds that:
• Pretreatment guidelines are needed to assass facilities
performing at less-than-Basic Treatment levels, but
adequate to serve as presettling facilities ahead of
infiltration treatment. The TRC recommends the
guidelines be set at 50% removal of 50-micron particles
and 80% removal of 125-micron particles. The TRC
further recommends these guidelines be applied
uniformly to this and all future technology submissions,
until such time as a different pretreatment goal is
devefoped and inctuded in Ecalogy's stormwater
manual.
The Vortechs system, sized at 35 GPM/sf, should
provide, at a minirnum, equivalent performance to a
presettling basin as defined in Stormtivater Management
Manual for Western Washington (August 2001), Volume
I! Chapter 6.
Vortechnics Inc. should be given the opportunity to
demonstrate, through additional laboratory and field
testing, whether the Vortechs System can attain
Ecology's Basic Treatment performance goal for TSS
removal.
Vortechnics Inc. should be given the opportunity to
demonstrate, through additional laboratory and field
testing, whether the Vortechs System can attain
Ecology's Oil Treatment performance goal.
Basis for the TRC's
Recommendations:
1. Laboratory testing was completed by ~ortechnics, Inc. for
sieved sand using a Vortechs Model 2000. Laboratory
results for the "50 micron" particle range (mean particle size
50 microns and including particles ranging from 38 to 75
microns) showed 50% removal at 35 GPM/sf operating rate.
In addition, laboratory results for the "typical gradation"
(mean particle size 80 microns and including particles
ranging from 38 to 500 microns) showed 80% removal at 35
GPM/sf.
2. Laboratory testing was completed by Vortechnics, Inc. for
l OW40 motor oil at 15 to 90 mg/L using a Vortechs Model
2000. The system provided about 90% removal at 13
GPM/sf operating rate.
3. Abbreviated laboratory testing was completed by
Vortechnics, Inc. for Sil-Co-Sil 106, a ground silica product
with a mean particle size of about 20 microns. Removal
rates at 5 to 10 GPM/sf were around 40%.
4. Various field studies were completed by independent parties
in the eastern and northeastern United States (Lake George,
NY; South Windsor, CT; Yarmouth, ME; Harding
Township, NJ; Lexington, MA; Burlington, VT; and
Charlottesville, VA). Study details are provided in the
technical appendices. These studies generally show above
80% TSS removal rates. However, the results from a particle
size distribution analysis on sediment captured in the Lake
George Vortechs System indicate that mainly coarse
particles were present. Because the influent particle size
distribution was not measured removal e~ciency of specific
particle sizes could not be determined.
Three field studies were completed by independent parties in
the Pacific Northwest (WSDOT SR-405; Buffalo
Slough/City of Portland; Unified Sewerage Agency,
Oregon). Study details were not included in Vortechnics
submissions. These studies generally show TSS removal
rates significantly below Ecology's Basic Treatment goals.
Vortechnics questions the studies' apparent inconsistencies
and sampling errors.
The system is easily maintained using a vacuum truck.
There are over 2500 and 100 Vortechs systems installed
nationwide and in the Pacific Northwest, respectively.
Other Vortechs-Related
Issues to be Addressed
By the Compan~
Design of future facilities must verify that effective vertical
hydraulic oil rise rates (the generally accepted rate is 0.033
feet per minute) can be achieved within the separation
chamber.
Field testing to-date suggests that the Vortechs System
cannot reliably attain 80% removal of the finer particles
comprising TSS found on local highways, parking lots, and
other high-use areas. Design of future facilities should
consider:
a. a flow diverter,
b. reducing the design velocity for small particle
applications,
c. testing the system in conjunction with a filter as part
of a treatment train,
d. deepening or modifying the sediment sump, or other
design features as needed to prevent resuspension of
settled solids.
e. taboratory re-testing with Sil-Co-Sil 106, after
modifying the system to reduce resuspension (for
example, retrofitting with a deeper sump).
TechnoloEy Description: CD-ROM of Vortechs System Technology Report, dated June
2003, may be requested from Vortechnics, Inc.
Design Manual and technical bulletins can be downloaded from
company's web site.
Contact Information:
Applicant: Vaikko Allen
Vortechnics, Inc.
(877)907-8676
Jerome W. Morrissette & Associates Inc. P. S.
1700 Cooper Point Road SW, #B-2, Olympia, WA. 98502-1110
(360) 352-9456 • (360) 352-9990
LETTER OF TRANSMITTAL
~~~~~~;~~d
TO: James E. Gibson
Development Services Engineer (NAR ~ 5 2005
City of Yelm
1 Q5 Yelm Avenue W.
Yelm, WA 98597
JOB NO. 03157
DATE: March 25, 2005
Si1R.ni.("'T~ Vr~lm ('nmmnr~;ls, C..1,..,,1„
- - - - ----- ~.,......... .> ..~....vv.o
Yelm Ridgeline Middle School (Junior High School)
I am enclosing for you the attached items:
COPIES DATE DESCRIPTION
March, 20Q5 Deveiopment Review Plans
March, 2005 Drainage Report
March, 2005 Contract Specifications
March, 2005 Revised Landscape Plans
March, 2005 Redlined Drawing Set
March, 2005 Landscape Review Comment Response Letter
Attached are the revised Civil Improvement Plans, Drainage Report, Revised Landscape
Response Letter, Revised Landscape Plans addressing your Mazch 8, 2005 comment letter. The
City comments are in bold, my responses are italicized:
Site Plan (sheet C1.2):
1.,I~ Please add the structural sections for the maintenance access roads.
~'E~ Section provided on Sheet Cl. S
c~~cl~ (~us fz~~e 2" cs~c
l. The parking stalls do not meet the City of Yelm standards. Please review
city details and revise as necessary.
Revised the arking stalls to meet the City Requirements
cG.ee_ ~ ~ ~ -l 1~ -J--~,r,-r
3~~~ Please add sidewalk details to t~e plans.
Details provided on Sheet C2.14
Civit * Municipal * Geotechnical Engineering and Planning
~
4. The aiignment of the access road at 107th Ave SE needs to be realigned.
The driveway should be aligned closer to a perpendicular angle.
The entrance has been revised to be in accordance with the City detail 4-9,
directing the traffc perpendicular at the approach to 107`h. The entrance is
perpendicular to 107~h Avenue SW greater than 30 feet from the back af the
crosswalk
~ The stormwater facility needs to be removed from the Y2 Corridor per the
Conditions of Appro~ al.
The pond was moved out of the Y2 Corridor, the 100 year storm event is at
elevation 347.36 with a one foot freeboard elevation at 348.36, placing the
pond outside the corridor. ~ d~ c> 1 s o u~r- ~~ 4~ ~
5- ~_ o~ r n-.~ v- c J ~-~ 07` .
6. The Conditions of Approval requires there to be a turnaround at the end of
(~ ~C-Carter Street before the school gates.
The gates were moved to provide the entire fr•ont parking lot as a turnaround.
E~lC z~ -r~-+,S ~-~,~ ~ f
Erosion Control Details and Notes (sheets C1.1,1.3):
7. The property lines need to be staked by a surveyor every 200 feet. At all
corners and every 200 feet there needs to be a stake placed to delineate the
~ property lines, r-T ~ s ~~~ r P cz S
A note has been added requiring the contractor to stake the property lines every
200 feet prior to the pre-construction meeting. I have also included in the
Contract Specrfications (see attached) the cantractors' surveyor will provide the
property stakes every 200 feet.
Sto water and Grading Piau (sheet C2.0, 2.1,2.2,2.3,2.4,2.5, 2.6, ~nd 2.8):
~ The stormwater pond does not meet the setback requirements. The toe or
top of the slope must be setback 10 feet from the property line, tract or
right of way line. This measurement is taken from the property line to the
catch point of the grading.
The pond x~as revised to be 12 +/- feet from the property line
i~v ~ s r~-~7 f~PPe,4.,~ Tp 1-'~ ~s- i~ d~-.~ ~'
9. The stormwater conveyance sy~stem needs to be shown in profile view.
Profile sheets have been added to the plan set.
~
wiA-i..~ ~ w ~ruK.
~oKF<<(rTS StC-
S++'r G 3 . ~
S,e w S l.,t .~C. ~ C"3 . 1
It appears t6at the segaration betv~~een water and storm as not being met in
certnin locations. Please verify that there is at least 5 feet horizontally and
l8" vertically are maintained.
The City of Yelm Guidelines does nvt have any separation requirements
between water and storm. The design has incorporated every effvrt to avoid any
conflicts, and adjust as necessary to prol~ide the maximum pos.rible separation
between systems. The design has been revised to meet the requested separation
between water and sewer.
Civil * Municipal * Geotechnical Engineering and Alanning
c,.~ ~
11. Without profiles the vertical separation has not be reviewed.
Profile sheets have been added to the plan set.
12. Are the football field and baseball fields going to have stormwater
drainage?
Infiltration galleries have been added to take care of stormwater from the sports
frelds. c4-e~~ ~ins~~~ ~~ ~~t,o~-~.
13. The entrance from Carter St appears to be graded flat or sloging toward
~ Carter St. Please verify the stormwater will be retained onsite and not run
~ off site to Carter St.
The design has provided a grade break directing as much of the entrances
storm~~ater a possible onto the site.
14. The callouts for CB 25 appear in error.
The callout has been corrected.
15. "1'he lU7th Avenue 5~ connection is required to be made utilizing a
driveway apron. The driveway will be designed as a cement concrete
b t,~ approach, City of Yeim detail4-9, Type 1. See comment from site plan
section concerning alignment.
The entrance has been rel~ised to be in accordance with the Ciry detail ~-9,
directing the traffic perpendicular at the approach to 107`". The entrance is
perpendicular to 107`h Avenue SW greater than 30 feet from the back of the
crosswalk.
16. Verify that stormwater is not being discharged offsite due to the proposed
~~~ grades.
Grade breaks have been provided at the site entrances to drain as much
stormwater as possible onto the site.
17. Any ladders in Type 2 catch basins need to have a minimum of 2 feet of
n tL clearance between them and adjacent objects. Please verify this and review
the standard notes to reflect this.
A note has been added to sheet C2.13 to address this comment.
Detail Sheet (sheet C2.9)(Sheet number revised to C2.14)
18. The ADA curb ramp detail is not current. Please add the agpropriate
~ lC- WSDOT curb ramp deta2ls t~ the plans.
WSDOT curb ramp details have been added to sheet C2.14
19. Please make the following note on the utility treneh: This detail is not being
d I~ approved by the city.
The note has been added as reques•ted.
STEP Plan (sheets C3.1, 3.4, 3.5, 3.'~:
Civil * Municipa] * Geotechnical Eneineering and Planning
S ~L`~ 2-
20. The'End of Line Clean Out' identified an the end of the new 3" farce main
~., should also have a 3" gate valve and clean out.
Typical end of the line clean out detail, sheet C3.5, tia~as modifred as requested.
21. The Type 3-48" manhole must be constructed in such a way as to prevent
any infiltration from entering the system. Please identify this method.
~ vacuum test requirement was added to the notes on the plans and in the
specifications (see attached).
22. The new SO,OOQ-gallon STEP Tank will need to be ~I-20 rated.
The manufacturers details are on the plans. The tank is designed for H-20
loading as requi/red by the manufactur/er (see attached).
~ ~c C L~L b~ 5 c.t ~*~-~ ~-~ ~ e 1
23. A submittal will be required on this new tank, to identify the location of the
~~` 6affle waU and the inlet type and size.
Additional callouts and details were added indicting the baf,fle location.
24. A hose bi6 will be required within 4U' of this S 1~.Y tanK fol~ mainienance.
A yard hydrant hose bib was added, providing water from the building to u~ithin
40 feet of the tank. (See sheet C3. 3) D+~~~-~ s~~re --S ~ v~~z ~~ ~~ r`-' r R~~ ~`''~ ~"
25. Page C3.1 shows side sewers coming from future portables? Ptease label
~ fL this on the plans.
A note r~~as added on sheet C3.1.
26. Please identify the size of the proposed Grease interceptor.
I have uttached the Mechanical Engineer's plan sheet with the sizing criteria
used to design the grease interceptor. St~~4, 3 2~ w~~ ls ~ d r~ ~~ +
27. This Grease Interceptor appears to 6e within the building. This tank will
need to be leak tested and the Sewer Department will need access to
d~ monitor grease levels.
The Grease interceptor is not u~ithin the building. The Mechanical Engineer has
designed the Grease Interceptor and their specifications will require this to be
met by the Contractor.
Water Plan (sheets C3.0, 3.2, 3.3):
The water plan and fire s~~stem has been re~~iewed as submitted. It is apparent that
the design is being changed and wiEl be reviewea when subnmitted with the revisions.
28. The water meter will be required to be a compound meter meeting Ciry
standards.
A 3" Compound meter has been added, a new detail is shown on sheet C3.4. /
~~"~t c~'tf-~ ~. 2 ~~,~..--~ £- m t~ 4. ~~~ vc o k ~ c1 r r S J'a S ~l S y~~
29. A Reduced Pressure Backflo~v Assembly will be requared after the water
meter.
Civil * Municipai * Geotechnical Engineering and Planning
5 u-8 2
The reduced pressure backfl'ow assembly is provided inside the building (see the
mechanical drawing 7.04 attached, the Mechanical Engineer will revise their
drax~ing to include a RP Backflow Prevention Device).
~ o --~- , ~ , , ~.. -~ 4 ~ « t ~ ~ ~ ~t ~ ~ u , ~- ~ -~ i~ ~ ~, ~ K ~ -~f 4 ~ -~ ~._
30. A double check valve will be required after the irrigation meter.
See the irrigation plans, the Landscape Architect is providing this, 1 have been
tasked to design to the back side of the irrigation meter only.
Ar'P D `C~~ C 2 l. Lo cc'(~ G4 D L U (i-t L L L~ ~- l l..c 1TY~- L.< ~Z~.
31. The water connections for the portables are considered private. Please label
the plans showing the connection between portables and building being
responsibility of the school district.
,A note has been added to the plans stating they are private.
32. Water usage calculations are requared. Please submit these calculations
with the next submittal.
The water usage calculations are included with the STEP tank calculations
submitted with the original submittal, based on the City of Yelm design
standards. lf you need additiona~ copies, p~ease ier me icnow.
.~ C e •~ e -~- ~ ~ c I~y ~ z. -~-~~ .
Stormw ater Report:
33. The stormwater report does not appear to have been updated when the
design changed. Please verify the report matches t~ie design wben
resubmitted.
7'he storm water report N~as revi~ed.~~
34. Much of the report refers to the separate Mill Pond School gallery. The
~plan does not show this gallery.
~ The Mill Pond gallery references were remvved.
35. The proposed Vortechnics stormwater treatment system may be allowed if
the following provisions can be met:
a. The sizing of the vault is in compliance with the Depart~ent of Ecology's
Use Designation.
I have provided sizing verification calculation meeting the DOE criteria in
Appendiz B. The maximum operating rate for the General Use Level
Designation is 35 gpm/sf (See appendix B, DOE L'se Designations for
Vortechnics Ine. 's Vortechs System), the proposed treatment devic•e
operating rate is 31 gpm/sf.
b. The Vortechnics is instalied following a flow splitter. This splitter shm~Zd
be designed with stand pipes and separating the 6-month flows from the
100 year flows.
I have designed the outlet pipe to the treatment device at 0.~0 feet helow the
bypass, which equates to 3.49 cfs discharging to the treatment device before
any flow enters the bypasses. (See Appendix B of the Drainage Report, 6-
Month Storm Event pipe invert elel~ation to Treatment Device) The floti+~ to
Civil * Municipal * Geotechnical Engineering and Planning
Su 6 Z I
the Vortechnics Treatment device is approximately 3.49 cfs, which is greater
than the HYDRA model for the 6-month storm of 3.45 cfs.
c. The appropriate stormwater model should be used to size this
applica~tion.
The 6-month storm event model provided the flow, which dictated the
treatment device size. The design blPasses all events greater than the 6-
month storm.
Landscape Plan:
36. Please refer to Tami Merriman's redlined plans for the comments.
The Landscape Architect has addressed these comments (see attache revised
Landscape Plans).
Conditions of Approval:
37. Please verify that you have addressed all the land use conditions of
approval on tl~e civil engineering plans. I have not reviewed them and will
not review them until the second review.
1 have reviewed the conditions of approval and believe I have addressed each
item.
If you have any questions, please contact me at (360} 352-9456.
Very truly yours;
Jerome W. Morrissette 8~ Associates Inc., P.S.
SIGNED:
Robert Tauscher, P.E.
Cc: Mr. Erling Birkland, Facilities Operations, Yelm Community Schools, P.O. Box 476, Yelm, WA 98597
Mr. Stan Zielinski, Architect, Erickson McGovern, 120 131~ Street S., Tacoma, WA 98444-4804
C:\Bob'sFiles103157 Yelm Rid~eline Middle School\Correspondance1032505 Transmit Yelm Comment LettecDOC
Civil * Municipal * Geotechnical Engineering and Planning
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Jerome W. Morrissette & Associates Inc.. P. S.
1700 Cooper Point Road SW, #B-2, Olympia, WA. 98502-1110
(360) 352-9456 • (360) 352-9990
TO: James E. Gibson
Development Services Engineer
City of Yelm
105 Yelm Avenue W.
Yelm, WA 98597
JOB NO. 03157
DATE: May 6, 2005
SUBJECT: Yelm Community Schools
Yelm Ridgeline Middle School (Junior High School)
I am enclosing for you the attached items:
Received
MAY g 2005
COPiES DATE DESCRIPTION
May, 2005 Development Review Plans
May, 2005 Drainage Report
May, 2005 Sizing Methodology of the Vortechnics Treatment
Device
Attached are the revised Civil Improvement Plans and Drainage Report, addressing your April
24, 2005 comment letter. The City comments are in bold, my responses are italicized:
Site Plan (sheet C1.2}:
1. The parking stalls do not meet the City of Yelm standards. Please review city details
$nd revise as necessary.
The parking lot layout was revised to meet the City details.
STEP Plan (sheets C3.1, 3.4, 3.5, 3.'n:
2. A hose bib will be required within 40' of this STEP tank for maintenance. The
callout for the hose 6ib is connecting it to the irrigation system. This hose bib will
need to be connected to a"constant on" water source.
The hose bib is connected to the irrigation system, downslream of the double check and
before the irrigation pump, providing a constant supply of water year around.
/3. Please add a callout to the civil plans with the size of the grease interceptor.
A callout was added.
Civil » Municipal * Geotechnical Engineering and Planning
./4. T6e sewer mainline connecting at the eausting main and running to the step tank
needs to be run paraliel and at least 10' horizontally from the proposed sewer main.
The s~ewer mainline zvas adjusted ta be parc~llel and 1 D feet of separation from the
watermain.
~5. The step tank invert should not be deeper than siz feet from invert to fmished grade.
The gravity sewer was revised to provide the invert less than ~ feet from the surface.
Water Plan (sheets C3.Q, 3.2, 3.3):
.~ 6. The water meter will be required to be a compound meter meeting City standards.
Following a discussioa between Bob Tauscher and myself it was the school's
preference to have a bypass installed in the vault This has been shown on the plans
however the bypass meter is not shown. Please add the second meter to the detail.
The 5chool's preference is to provide a bypass line for the compound meter, not an
additional meter. The bypass line was removed from the detail.
~•
~ o~'~ ~ ~7. A Reduced Pressure Backtlow Assembly will be required after the water meter. This
must be installed immediately after the water meter. No exceptions can be made.
A Reduced Pressure Backflow Assembly has been added immediately after the water
meter and a Reduced Pressure Backflow Assembly zn the building was removed.
~ 8. A double check valve will be ~required after the irrigation meter. Please call out the
need for the DACV on the civil plans. The specifications may be located on the
landscape plans.
A double check valve was shown on the Irrigataon Plans and a callout ha.r been added on
the Civil Plans.
9. Water usage calculations have been submitted and are being reviewed.
Understood
Stormwater Report:
10. The proposed Vortechnics stormwater treatment system will be ailowed if the
following provisions can be m~et per the DOE General Use Designation:
a. The sizing of t6e vauIf is in compliance witL the Deparhnent of Ecotogy's Use
Designation which specifies 35 g~m/sf using the Western Washington
Hydrology Model (`~VWHM). When asing the SBLTH or SCS methods the
accepted standard is 15 gpm/sf.
The WWHM was run for the site and the results indicated the our design is
providing treatment to fXow greater than the S year~, flow indicated by the t~G~'HM
(see attached WWHMresults).
b. It is recommended that the Vortechnics is installed following a flow splitter.
This splitter should be designed with stand pipes, separating the 6 month
flows from the IQO year #Tows. Piease sbow ~he stand pipes within t~e catcL
basin.
Civil * Municipal * Geotechnical Engineering and Planning
Per the manufacturer, the detail provided on the plans will function as long and
there is at least 1 foot of head between the inlet of the Vartechnics Treatment
Device and the bypass. The bypass was raised to provide a minimum of 1 foot of
elevafion difference between the inlet to the F~ortechnics Treatment Device and
the bypass.
If you have any questions, please contact me at (360) 352-9456
Very truly yours;
Jerome W. Morrissette ~ Associates Inc., P,S.
SIGNED: ~~e,.~/t>F'QG~1L.¢~c~ ,p,
Robert Tauscher, P.E. C-
Cc: Mr. Erting Brrkiand, Pacilities Operdtions, Yelm Coa~munity Schools, P.O. Box 476, Yelm, WA 98597
Mr. Stan Zielinski, Architect, Erickson McGovern, 120 131" Street S., Tacoma, WA 98444-4804
C:~Bob'sFiles\03157 Yelm Ridgeline Middle SchoollCottespondance\050605 Transmit Ye(m Comment 1,etter.DOC
Civil * Municipal * Geotechnical Engineering and Plant~ing
JWM&A
Jerome W. Morrissette & Associat~s Inc., P.S.
1700 Cooper Point Road SW, #&2, qiympia, WA 98502-1110
(360)352-9456 / FAX (360)352-9990
May 6, 2005
Mr. dames E. Gibson
City of Yelm - Development Services
105 Yelm Avenue
Yelm, Waskungton 98597
SUBJECT; Yelm Community School, Ridgeline Middle School
Sizing Methodology of the Vortechnics Treatment Device
Dear Mr. Gabson:
The following is an overview report for the sizing methodology used is sizing the proposed Vortechnics
Treatment Device for the Yelm Ridgeline Middle School site.
Yelm Community Schools is proposing site improvements for the above referenced school. I designed a
stormwater system to collect, treat and dispose of for the site stormwater. I used the HYDRA model for
the required hydrological analysis. The treatment sizing requirements is based on the 6-month 24-hour
storm event as required 1992 Department of Ecology's, Stormwater Management Manual for the Puget
Sound Basin.
The 6-month flow indicated by the HYDRA Model is 3.45 cfs for the d~sign. The sizing of the
Vortechnics Treatment device per the Depart~ment of Ecology's Use Designation requires a maximum
35gpm/sf flow. A Vortechnics Model 7000 was chosen, which has 50 sf of treatment surface area. Per the
manufacturers flow calculations (see attached), with the Vortechnics orifice elevation in the treatment
device set at 347.69 and th.e stormwater system bypass pipe set at 349.69, the total flow through the
treatment device is 3.46 cfs. A flow of 3.46 cfs converts to 1553 gpm, when divided by the 50 sftreatmenf
surface area, equates to 31 gpm/sf, meeting the 35 gpm/sf maximum.
The WWHM was also run to verify that the sizing calculation maximum of 35 gpm/sf can be rnet. The
results of the W WHM indicated the 5-year storm event resulted in 3.20 cfs, which is less than the
HYDRA modei d-month storm event flows of 3.45 cfs. Since the WWH~i 5-year flow is less than the
HYDRA model6-month storm event, the designed stormwater treatment device size is more conservative
and meets the requirements of the Department of Ecology and the City of Yelm standards.
Should you have any questions or require further information, please ca11 me at (360) 352-9456.
Yours very truly,
J. W. MORRISSETTE & ASSOCIATES INC., P.S.
Robert E. Tauscner, P.E.
Project Engineer
Civi! / Municipal / Geotechnical Engineering and P/anning
Page 1 of 2
Bob
From: Scott Gomeau jsgomeau@Vortechnics.com]
Sent: Friday, April 29, 2005 3:26 PM
To: Robert Tauscher
Subject: Yelm Junior High school
Bob,
Good news, i had already designed the hydraulics on the system per my e-mail correspondence with you on
March 25.
My hydraulic modeling indicates the off-line Vortechs 7000 will treat the WQF of 3.45 cfs before bypass occurs
(see flow calcs attached). Our bypass modeling assumes broad crested weir flow because we typically install a
diagonal weir wall in the diversion MH. In your case there is no weir wall but an overtlow pipe. From the SDC
sheet you can see that at 2 ft of head above the orifice crest, the system treats 3.45 cfs. This is the elevation or
head tevel we should set the overfiow pipe at (EL. 349.69 ft). As far as modeling the bypass flow, it can easily be
done using culvert analysis and pa~tial pipe flow equafions. The system will continue to see water during bypass
events because of the head build up in the diversion MH, however they will not be significant enough to wash our
system out. For simplification purposes I would assume any flow above 3.45 cfs enters the overflow pipe. The
maximum allowable water surface elevation in the diversion MH during peak flows should be around 350.65.
Please consider this e-mail confirmation that the diversion MH you are proposing is acceptable to Vortechnics
(Manufacturer) provided that you set the overflow pipe accordingly.
Altematively you can go with the bypass weir wall design which is reflected in the SDC sheet
Thanks,
Scott Go~neau
Scott Gomeau, P.E., CPSWQ
Design Engineer
Vortechnics, Inc.
200 Enterprise Drive
Scarborough, Maine 04074
tel: 207-885-9830, ext 242
fax:207-885-9825
e-mail: sgorneau@vortechnics.com
Visit us at: www.vortec/t-tics.com
Committed to Cle~r~T WaterT M
The information contained in this message and any file transmitted with it may be privileged and
confidential, and protected from disclosure. If the reader of this message is not the intended recipient, or
an employee or agent responsible for delivering this message to the intended recipient, you are hereby
4/29/2005
~
Vortechs "" Stormwater Treatment Systems
vartechnics
1
~ FLOW CALCULATIONS
Yetm Juniar H~gh Schoo~
Yelm, WA
Model 7000
System WQS
Vortechs Orifice
Cd = 0.56
A(ft2) = 0.46
Crest Elevation ft= 347.69 Vortechs Weir
Cd = 3.37
Weir Crest Length (ft) = 0.75
Crest Elevation ft= 349.28 Bypass Weir
Cd = 3.3
W~ir Crest Length (ft) = 6
Crest Elevation ft= 350
Head Elevation Oriflce Flow Weir Flow B ass Flow Total Flow
(ft) (ft) ( cfS) (cfs) (cfs) (cfsj
0.00 347.69 0.00 0.00 0.00 0.00
0.20 347.89 0.30 O.OQ O.DO 0.30
0.40 348.09 0.85 0.00 0.00 0.85
0.60 348.29 1.30 0.00 0.00 1.30
0.80 348.49 1.60 0.00 0.00 1.60
1.00 348.69 1.$5 0.00 0.00 1.85
1.20 348.89 2.Q7 0.00 0.00 2.07
1.40 349.09 2.27 0.00 0.00 2.27
1.60 349.29 2.46 0.00 0.00 2.46
1.80 349.49 2.63 0.25 0.00 2.88
2.00 349.69 2.79 0.67 O.OQ 3.46
2.20 349.89 2.94 121 0.00 4.15
2.40 350.09 3.09 1.85 0.56 5.50
2.60 350.29 3.22 2.58 3.14 8.94
2.80 35Q.48 3.36 3.38 6.85 13.59
2.96 350.65 3.46 4.05 10.38 17.89
alcu ate b: WS 12/15/2004 Checked by:
351.0
350.5
350.0
~
c 349.5
0
:a
> sas.o
m
w
348.5
348.0
347.5
VortechsT"' System
Stage Discharge Curve
0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0
Discharge (cfs)
7300ADSWQS.xIs 3/25/2005
Vortechs "" Stormwater T~+eatment Systems
~~~~
1 FLOW CALCULATIONS
Yelm Junior High School
Yelm, WA
Model 7000
System WQS
Vortechs Oriflce
Cd = 0.56
A(ft2) = 0.46
Crest Elevation ft= 347.69 Vortechs Weir
Cd = 3.37
Weir Crest Length (ft) = 0.75
Crest Elevation ft= 349.28 Bvpass Weir
Cd = 3.3
Weir Crest Length (ft) = 6
Crest Elevation ft= 350
Head Elevatlon Oriflce Flow Weir Flow B ass Flow Total Flow
(ft) (ft) ( cfs) (cfs) (cfs) (cfs)
0.00 347.69 0.00 0.00 0.00 0.00
0.20 347.89 0.30 0.00 0.00 0.30
0.40 348.09 0.85 0.00 0.00 0.85
0.60 348.29 1.30 0.00 0.00 1.30
0.80 348.49 1.60 0.00 0.00 1.60
1.00 348.69 1.85 0.00 0.00 1.85
1.20 348.89 2.07 0.00 0.00 2.07
1.40 349.09 2.27 0.00 0.00 2.27
1.60 349.29 2.46 0.00 0.00 2.46
1.80 349.49 2.63 0.25 0.00 2.88
2.00 349.69 2.79 0.67 0.00 3.46
2.20 349.89 2.94 1.21 0.00 4.15
2.40 350.09 3.09 1.85 0.56 5.50
2.60 35029 3.22 2.58 3.14 8.94
2.80 350.49 3.36 3.38 6.85 13.59
2.96 350.65 3.46 4.05 10.38 17.89
Calculated : WSG 12 15/2004 ecked b:
VortechsT"' System
Stage Discharge Curve
351.0 -,-
~
350.5 - - - -- ---
-
j ----- -----
350.0 _~--- - ' -- -
~ -~ - 6res
~ ! `
c 349.5 - - -- --
----
_..
_
-
•a° --
- •-
• --. ..---
- - -
.
-
.. .
---- -----
_ .
-----
. -
----- •- --. -. Wei
- Crest
~ 349
0 - ---- -
. - --
w
348
5 -
. ~I i
348A - - - - ,
347
5 -- -- ----- ----- - ---- ----. ._..- ----- -- --• -- OrifiZeCrest
. , .
0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0
Discharge (cfs)
7300ADSWQS.xIs 3/25/20~5
Page 2 of 2
notified that any dissemination, distribution or copying of this communications is strictly prohibited. If
you have received this communication in error, please notify us immediately by replying to the message
and deleting it from your computer. Finally, the recipient should check this email and any attachments
for the presence of viruses. The company accepts no liability for any damage caused by any virus
transmitted by this email. Thank you, Vortechnics, Inc.
4/29/2005
WESTERN WASHINGTON HYDROLOGY MODEL V2
PROJECT REPORT
Project Name: Ridgeline Middle School
Site Address: 10336 carter Street
City . Yelm, WA
Report Date : 5/2/2005
Gage . Olympia
Data Start . 1955
Data End . 1999
(adjusted) Precip Scale: 0.80
PREDEVELOPED L AND U3E
Basin . Basin 1
Flows To . Pond 1
GroundWater: No
Land Use Acres
OUTFIASH PASTURE: 20.08
OUTWASH GRA53: 5.01
II~ERVIOU3: 5.51
Standard residential land areas:
Soil Type Lot Acres Number of Lots
Outwash . 0.000 0
Till . 0.000 0
Saturated : 0.000 0
DEVELOPED LPND U3E
Basin . Basin 1
Flows To . Pond 1
GroundWater: No
Land Use Acres
OUTWASH PASTURE: 14.06
OUTWASH GRASS: 5.41
IMPERVIOUS: 11.13
RCHRES (PONDj INFORMATION pond exista in the predeveloped acenareo
Pond Name: Pond 1
Pond Type: Trapezoidal Pond
Pond Flows to : Point of Compliance
Pond Rain / Evap is not activated.
Dimensi.ona
Depth: 3ft.
Bottom Length: 90ft.
Bottom Width : 90ft.
Side slope 1: 3 To 1
Side slope 2: 3 To 1
3ide slope 3: 3 To 1
3ide slope 4: 3 To 1
Volume at Riser Head: 0.424 acre-ft.
Diseharge Structure
Riser Height: 2 ft.
Riser Diameter: 12 in.
Pond Hydraulic Table
3tage(ft) Area(acr) Volume(acr-Pt) Dachrg(cPe) Znfilt(cfs)
~4R.~ (1.1Rh n.nnn n.nnn n.n~n
398. 1 0 .188 0. 019 0.000 0.000
348. 2 0 .191 0. 038 0.000 0.000
348. 3 0 .193 0. 057 0.000 0.000
348. 4 0. 196 0. 076 0.000 0.000
348. 5 0. 199 0. 096 0.000 0.000
348. 6 0. 201 0. 116 0.000 0.000
348. 7 0 .204 0. 136 0.000 0.000
348. 8 0. 206 0. 157 0.000 0.000
348. 9 0. 209 0. 178 0.000 0.000
349. 0 0. 212 0. 199 0.000 0.000
349. 1 0 .214 0. 220 0.000 0.000
349. 2 0. 217 0. 241 0.000 0.000
349. 3 0. 220 0. 263 0.000 0.000
349. 4 0. 222 0. 285 0.000 0.000
349. 5 0. 225 0. 308 0.000 0.000
349. 6 0. 228 0. 330 0.000 0.000
349. 7 0. 230 0. 353 0.000 0.000
349. 8 0. 233 0. 376 0.000 0.000
349. 9 0. 236 0. 900 0.000 0.000
350. 0 0. 239 0. 424 0.000 0.000
350. 1 0. 242 0. 448 0.308 0.000
350. 2 0. 244 0. 472 0.871 0.000
350. 3 0. 247 0. 497 1.600 0.000
350. 4 0. 250 0. 521 2.464 0.000
350. 5 0. 253 0. 547 3.443 0.000
350. 6 0. 256 0. 572 4.526 0.000
350. 7 0. 259 0. 598 5.704 0.000
350. 8 0. 262 0. 624 6.969 0.000
350. 9 0. 265 0. 650 8.315 0.000
351. 0 0. 268 0. 677 9.739 0.000
Pond Name: Pond 1
Pond Type: Trapezoidal Pond
Pond Flows to : Point of Compliance
Pond Rain / Evap is not activated.
Dimensions
Depth: 2ft.
Bottom Lenqth: 120ft.
Hottom Width : 55ft.
3ide slope 1: 3 To 1
Side slope 2: 3 To 1
Side slope 3: 3 To 1
Side slope 4: 3 To 1
Volume at Riser Head: 0.164 acre-ft.
Discharge Structure
Riser Height: 1 ft.
Riser Diameter: 12 in.
NotchTypa . Rectangular
Notch Width : 0.000 ft.
Notch Height: 0.000 ft.
Pond Hydraulic Table
Sta ge(ft) Area (acr) Volume(acr-ft) Dsahrg(cfa) Infilt(oPe)
346. 0 0. 152 0.000 0.000 0.000
396. 1 0. 154 0.015 0.000 0.000
346. 2 0. 156 0.031 0.000 0.000
346. 3 0. 159 0.047 0.000 0.000
346. 4 0. 161 0.063 0.000 0.000
346. 5 0. 164 0.079 0.000 0.000
346. 6 0. 166 0.095 0.000 0.000
346. 7 0. 169 0.112 0.000 0.000
396. 8 0. 171 0.129 0.000 O.OOQ
346. 9 0. 174 0.146 0.000 0.000
347. 0 0. 176 0.164 0.000 0.000
347. 1 0. 179 0.182 0.308 0.000
347. 2 0. 182 0.200 0.871 0.000
347. 3 0. 184 0.218 1.600 0.000
347. 4 0. 187 0.237 2.964 0.000
347. 5 0. 190 0.255 3.443 0.000
347. 6 0. 192 0.274 4.526 0.000
347. 7 0. 195 0.294 5.704 0.000
347:8 0 .198 0. 313 6.969 0 .000
347.9 0 .200 0. 333 8.315 0 .000
348.0 0 .203 0. 353 9.739 0 .000
ANAI,YSIS RESULTS
Flow Frequency Return Periods for Predeveloped
Return Period Flow(cfs)
2 year 1.251937
5 year 1.548016
10 year 1.729683
25 year 1.946962
50 year 2.101626
100 year 2.251213
Flow Frequency Return Periods for Developed Unmitigated
Return Period Flow (cfs)
2 year 2.632772
5 year 3.200665
10 year 3.536932
25 year 3.92806
50 year 9.199658
100 year 4.457295
Flow Frequenay Return Periods for DeveloQed Mitigated
Return Period Flow(cfs)
2 year 2.632772
5 year 3.200665
10 year 3.536932
25 year 3.92806
50 year 4.199658
100 year 9.457295
Yearly Peaks for Predeveloped and Developed-Mitigated
Year Predeveloped Developed
1956 1.291 2.522
1957 2.149 4.335
1958 1.013 2.177
1959 1.244 2.558
1960 1.505 3.084
1961 0.955 2.030
1962 0.952 1.975
1963 1.633 3.376
1964 1.525 3.245
1965 1.469 2.929
1966 0.823 1.859
1967 1.261 2.470
1968 1.030 2.086
1969 0.742 1.590
1970 0.949 1.949
1971 1.149 2.460
1972 1.709 3.104
1973 1.146 2.366
1974 1.324 2.916
1975 0.966 2.007
1976 1.282 2.748
1977 1.229 2.596
1978 1.352 2.852
1979 1.394 2.913
1980 1.164 2.518
1981 1.451 3.168
1982 1.388 3.198
1983 1.617 3.375
1984 0.992 2.256
1985 1.217 2.591
1986 1.409 2.866
1987 1.597 3.101
1988 0.816 1.762
City of Yel m
Community Development Department
105 Yel m Aven u e West
P.O. Box 479
Yel m, WA 98597
March 8, 2005
Bob Tauscher
Jerome W. Morrissette and Assoc.
1700 Cooper Point Road SW #B2
Olympia, Washington 98502
RE: Ridgeline Middle School - SPR-04-0180-YL
Initial Review of Civil - Site Construction Documents
Mr. Tauscher:
The City of Yelm has completed the initial review of the proposed junior high school
referred to as Ridgeline Middle School. Your application included:
• Civil Engineering Plans dated 12/22/04
• Landscape Plans dated 12/17/04
• Preliminary Drainage and Erosion Control Report, Nov 2004
• STEP Calculations
We have reviewed the plans for compliance with the City of Yelm Development
Guidelines, the DOE Stormwater Manual and general standards of civil engineering
practice. The following comments need to be addressed before the plans may be
approved for construction. The plans have been reviewed as submitted. If you have
made any changes to the plans since the initial submittal they should be shown the
revised plans. Our comments are summarized below:
Site Plan (sheet C1.2):
1. Please add the structural sections for the maintenance access roads.
2. The parking stalls do not meet the City of Yelm standards. Please review city details
and revise as necessary.
3. Please add sidewalk details to the plans.
4. The alignment of the access road at 107t" Ave needs to be realigned. The
driveway should be aligned closer to a perpendicular angle.
5. The stormwater facility needs to be removed from the Y2 Corridor per the
Conditions of Approval.
6. The Conditions of Approval requires there to be a turnaround at the end of Carter
Street before the school gates.
(360) ?58-8438
(360) 458-3144 FAX
www.ci.yelm.wa.us
Erosion Control Details and Notes (sheets C1.1, 1.3):
7. The property lines need to be staked by a surveyor every 200 feet. At all corners and
every 200 feet there needs to be a stake placed to delineate the property line.
Stormwater and Grading Plan (sheet C2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, and 2.8):
8. The stormwater pond does not meet the setback requirements. The toe or top of the
slope must be setback 10 feet from the property line, tract or right of way line. This
measurement is taken from the property line to the catch point of the grading.
9. The stormwater conveyance system needs to be shown in profile view.
10. It appears that the separation between water and storm is not being met in certain
locations. Please verify that there is at least 5 feet horizontally and 18" vertically are
maintained.
11. Wthout profiles the vertical separation has not be reviewed.
12.Are the football field and baseball fields going to have stormwater drainage?
13. The entrance from Carter St appears to be graded flat or sloping toward Carter
St. Please verify the stormwater will be retained onsite and not run off site to
Carter St.
14. The callouts for CB 25 appear in error.
15. The 107t" St connection is required to be made utilizing a driveway apron. The
driveway will be designed as a cement concrete approach, City of Yelm detail 4-
9, type 1. See comment from site plan section concerning alignment.
16. Verify that stormwater is not being discharged offsite due to the proposed
grades.
17. Any ladders in type 2 catch basins need to have a minimum of 2 feet of
clearance between them and adjacent objects. Please verify this and review the
standard notes to reflect this.
Detail Sheet (sheet C2.9)
18. The ADA curb ramp detail is not current. Please add the appropriate WSDOT
curb ramp details to the plans.
19. Please make the following note on the utility trench: This detail is not being
approved by the city.
STEP Plan (sheets C3.1, 3.4, 3.5, 3.7):
20. The `End of Line Clean Out' identified on the end of the new 3" force main should
also have a 3" gate valve and clean out.
21. The type 3-48" manhole must be constructed in such a way as to prevent any
infiltration from entering the system. Please identify this method.
22. The new 50,000-gallon STEP Tank will need to be H-20 rated.
23.A submittal will be required on this new tank, to identify the location of the baffle
wall and the inlet type and size.
24.A hose bib will be required within 40' of this STEP tank for maintenance.
25. Page C3.1 shows side sewers coming from future portables? Please label this on
the plans.
26. Please identify the size of the proposed Grease interceptor.
February 8, 2005 Page 2 of 4
27. This grease Interceptor appears to be within the building. This tank will need to
be leak tested and the Sewer Department will need access to monitor grease
levels.
Water Plan (sheets C3.0, 3.2, 3.3):
The water plan and fire system has been reviewed as submitted. It is apparent that the
design is being changed and will be reviewed when submitted with the revisions.
28. The water meter will be required to be a compound meter meeting City standards.
29. A Reduced Pressure Backflow Assembly will be required after the water meter.
30. A double check valve will be required after the irrigation meter.
31. The water connections for the portables are considered private. Please label the plans
showing the connection between portables and building being responsibility of the
school district.
32. Water usage calculations are required. Please submit these calculations with the next
submittal.
Stormwater Report:
33. The stormwater report does not appear to have been updated when the design
changed. Please verify the report matches the design when resubmitted.
34. Much of the report refers to the separate Mill Pond School gallery. The plan
does not show this gallery.
35. The proposed Vortechnics stormwater treatment system may be allowed if the
following provisions can be met:
a. The sizing of the vault is in compliance with the Department of Ecology's
Use Designation.
b. The Vortechnics is installed following a flow splitter. This splitter should
be designed with stand pipes and separating the 6 month flows from the
100 year flows.
c. The appropriate stormwater model should be used to size this application.
Landscape Plan:
36. Please refer to Tami Merriman's redlined plans for the comments.
Conditions of Approval:
37. Please verify that you have addressed all the land use conditions of approval on
the civil engineering plans. I have not reviewed them and will not review them
until the second review.
Please review and revise the plans to address the above referenced comments. When
the project is resubmitted you will need to submit 4 sets of plans, 2 stormwater reports.
The project engineer should include a written response with the resubmittal, indicating
how all the review comments above have been addressed or responded to. This will
significantly expedite our review of the project. If you have any additional questions or
comments please do not hesitate to call or contact me at jimg@ci.yelm.wa.us.
February 8, 2005 Page 3 of 4
Community Development Department
Respectfully,
Jim Gibson
Development Review Engineer
Cc Grant Beck, Tami Merriman, Gary Carlson, City of Yelm
Rocky Birkland, Yelm Schools
enc. Redlined Landscape Plans
February 8, 2005 Page 4 of 4
November ~9, 2003
Use Designations for Vortechnics Inc.'s Vortechs System
Applicant: Vortechnics, Inc.
Applicant Address: 200 Enterprise Drive
Scarborough, ME 04074
A lication Documents: Vortechs System Conditional Use Approval Application Letter
to the Washington State Department of Ecology (June 25, 2003)
Vortechs Stormwater Treatment System Technology Report,
June 2003
Technical Appendices 1 through 16
Appljcant's Use Level Request: Conditional Use Designation as a Basic Treatment device in
accordance with Ecology's 2001 stormwater manual.
AAA~lcant's Performance Claims: Based on laboratory trials, the Vortechs System will achieve an
80% TSS removal efficiency, for sediment particles ranging
from 38 to 7S microns, at an operating rate of 13 gallons per
minute per square foot (GPM/s~ at the peak flow for the
Ecology design treatment storm.
Ecologv's Decision:
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The system is recommended only for sites likely to produce
relatively high TSS concentrations (above 100 mg/L), where
TSS is primarily composed of 50 microns and larger. Potentially
appropriate sites include parking lots, highways and urban
streets, material transfer sites, hydrocarbon transfer sites,
retrofits, steep/erosive sites, and space-limited sites.
Based on the applicant's submissions and the Technical Review
Committee's (TRC) recommendations (see below), Ecology
hereby issues the following use designations for the Vortechs
technology: _~_
General Use Level Designation (GULD) for pretreatment
use, as defined in the Ecology Manual Volume I, (a)
ahead of infiltration treatment, or (b) to protect and
extend the maintenance cycle of a Basic or Enhanced
Treatm~ent device (e.g., sand or media ~lter). This
GULD applies to Vortechs units sized at an operating rate of
no more than 35 gpm/sf at the Water Quality design flow
rate as determined using the Western Washington Hydrolo~
2. Pilot Use Level Designation (PULD) for oil and grease
treatment. This applies to Vortechs units sized at an
operating rate of no more than 13 gpm/sf at the Water
Quality design flow rate as determined using the WWHM.
This PULD expires on August 1, 2006 unless extended by
Ecology.
Properly designed and operated Vortechs systems may also
have applicability in other situations (example: low-head
situations such as bridges or ferry docks), for TSS and
oil/grease removal where, on a case-by-case basis, it is found
to be infeasible or impracticable to use any other approved
practice. Local jurisdictions should follow established
variance or exception procedures in approving such
applications.
Ecology finds that the Vortechs may also be appropriate
when used:
o To provide water quality benefits in retrafit
situations.
o As the first (primary or pre-treatment) camponent in
a treatment train.
o To capture and retain deicing grit/sand.
Ecolo~v's Conditions of Use:
Technical Review
Committee's Recommendations
To Ecolo~v:
1. Vortechs Systems must be designed, assembled,
installed, operated, and maintained in accordance with
Vortechnics, Inc.'s applicable manuals and documents
and the Ecology Decision.
2. On or before December 31, 2003, Vortechnics shall
submit a QAPP that meets the TAPE requirements for
attaining a GULD for oil and grease removal.
3. Local jurisdictions must file a"Pilot Level Technologies
Notice of Intent" form with Ecology prior to authorizing
Vortechs for a PULD application. All facilities installed
under a PULD must monitor oil and grease in
accordance with the Ecology-approved QAAP.
4. Vortechnics, Inc. shall complete all required testing and
submir a TEER for TRC and Ecology review by
December 2005.
5. Vortechnics, Inc. may request Ecology to grant deadline
or expiration date extensions, upon showing cause for
such extensions.
6. Discharges from the Vortechs System shall not cause or
contribute to water quality standards violations in
receiving waters.
The TRC finds that:
• Pretreatment guidelines are needed to assess facilities
performing at less-than-Basic Treatment levels, but
adequate to serve as presett(ing facitities ahead of
infiltration treatment. The TRC recommends the
guidelines be set at 50% removal of 50-micron particles
and 80% removal of 125-micron particles. The TRC
further recommends these guidelines be applied
uniformly to this and all future technology submissions,
until such time as a different pretreatment goal is
deveioped and inctuded in Ecology's storme~arer
manual.
The Vortechs system, sized at 35 GPM/sf, should
provide, at a minimum, equivalent performance to a
presettling basin as defined in Stormwater Management
Manual for Western Washington (August 2001), Volume
V, Chapter 6.
Vortechnics Inc. should be given the opportunity to
demonstrate, through additional laboratory and field
testing, whether the Vortechs System can attain
Ecology's Basic Treatment performance goal for TSS
removal.
Vortechnics Inc. should be given the opportunity to
demonstrate, through additional laboratory and field
testing, whether the Vortechs System can attain
Ecology's Oil Treatment performance goal.
Basis for the TRC's
Recomrnenc~ations:
l. Laboratory testing was compfeted by Vortechrlics, Inc. for
sieved sand using a Vortechs Model 2000. Laboratory
results for the "50 micron" particle range (mean particle size
50 microns and including particles ranging from 38 to 75
microns) showed 50% removal at 35 GPM/sf operating rate.
In addition, laboratory results for the "typical gradation"
(mean particle size 80 microns and including particles
ranging from 38 to SQO microns) showed 80% removal at 35
GPM/sf.
2. Laboratory testing was completed by Vortechnics, Inc. for
l OW40 motor oil at 15 to 90 mg/L using a Vortechs Model
2000. The system provided about 90% removal at 13
GPM/sf operating rate.
3. Abbreviated laboratory testing was completed by
Vortechnics, Inc. for Sil-Co-Sil 106, a ground silica product
with a mean particle size of about 20 microns. Removal
rates at 5 to 10 GPM/sf were around 40%.
4. Various field studies were completed by independent parties
in the eastern and northeastern United States (Lake George,
NY; South Windsor, CT; Yarmouth, ME; Harding
Township, NJ; Lexington, MA; Burtington, VT; and
Charlottesville, VA). Study details are provided in the
technical appendices. These studies generally show above
80% TSS removal r~tes. However, the results from a particle
size distribution analysis on sediment captured in the Lake
George Vortechs System indicate that mainly coarse
particles were present. Because the influent particle size
distribution was not measured removal efficiency of specific
particle sizes could not be determined.
5. Three field studies were completed by independent parties in
the Pacific Northwest (WSDOT SR-405; Buffalo
Slough/City of Portland; Unified Sewerage Agency,
Oregon). Study details were not included in Vortechnics
submissions. These studies generally show TSS removal
rates significantly below Ecology's Basic Treatment goals.
Vortechnics questions the studies' apparent inconsistencies
and sampling errors.
6. The system is easily maintained using a vacaum truck.
7. There are over 2500 and 100 Vortechs systems installed
nationwide and in the Pacific Northwest, respectively.
Other Vortechs-Related
Issues to be Addressed
Bv the Company:
1. Design of future facilities must verify that effective vertical
hydraulic oil rise rates (the generally accepted rate is 0.033
feet per minute) can be achieved within the separation
chamber.
2. Field testing to-date suggests that the Vortechs System
cannot reliably attain 80% removal of the finer particles
comprising TSS found on local highways, parking lots, and
other high-use areas. Design of future facilities should
consider:----~ --~
Ca. a flow divertei~,
S~ reducing the design velocity for small particle
applications,
c. testing the system in conjunction with a filter as part
of a treatment train,
d. deepening or modifying the sediment sump, or other
design features as needed to prevent resuspension of
settled solids.
e. laboratory re-testing with Sil-Co-Sil 106, after
modifying the system to reduce resuspension (for
example, retrofitting with a deeper sump).
Technology Descriation: CD-ROM of Vortechs System Technology Report, dated June
200~, may be requested from Vortechnics, Inc.
Design Manual and technical bulletins can be downloaded from
company's web site.
Contact Information:
Applicant: Vaikko Allen
Vortechnics, Inc.
(877) 907-8676
vallen e vortechnics.com
Applicant website: http://www.vortechnics.com
Ecology: Stan Ciuba, P.E.
Water Quality Program
(360) 407-6435
sciu461 ,ecy.wa.~t,ov
TRC: Mark Blosser, P.E.
City of Olympia
(360) 753-8320
mblosser cr,ci.olvmpia.wa.us
CITY OF YELM SEWER DEPARTMENT
March 4, 2005
Review - Ridgeline Middle School
1. The `End of Line Clean Out' identified on the end of the new 3" force
main should also have a 3" gate valve and clean out.
2. The type 3 48" manhole must be constructed in such a way as to
prevent any infiltration from entering the system. Please identify this
method.
3. The new 50000-gallon STEP Tank will need to be H-20 rated.
4. A submittal will be required on this new tank, to identify the location
of the baffle wall and the inlet type and size.
5. A hose bib will be required within 40' of this STEP tank for
maintenance.
6. Page C3.1 shows side sewers coming from ?? future portables?
7. Please identify the size of the proposed Grease interceptor.
8. This grease Interceptor appears to be within the building. This tank
w~ll need to be ]eak tested and the Sewer Department will need access
to monitor grease levels.
Jerome W. Morrissette & Associates Inc. P. S.
1700 Cooper Point Road SW, #B-2, Olympia, WA. 98502-1 1 1 0
(360) 352-9456 • (360) 352-9990
LETTER OF TRANSMITTAL
TO: James E. Gibson
Development Services Engineer
City of Yelm
105 Yelm Avenue W.
Yelm, WA 98597
JOB NO. 03157
DATE: December 23, 2004
SUBJECT: Yelm Community Schools
Yelm Ridgeline Middle School (Junior High School)
I am enclosing for you the attached items:
Received
DEC 2 3 2004
COPIES DATE DESCRIPTION
December, 2004
December, 2004
December, 2004
December, 2004
December, 2004
November, 2004
Civil Plan Review Application
Development Review Plans
Drainage Report
Landscape Plans
STEP Calculations
Fire Flow Calculations previously submitted
Attached are the civil, landscape plans and drainage report. The plans do not include profiles for
water and sewer as required by the Development Guidelines. I will submit them after you have
first review these systems and make any adjustments as required to save in redesign effort of the
profiles. If you have any questions, please contact me at (360) 352-9456.
Very truly yours;
Jerome W. Morrissette ~ Associates Inc., P.S.
SIGNED: ~ Q
Robert Tauscher, P.E.
Cc: Mr. Erling Birkland, Facilities Operations, Yclm Community Schools, P.O. Box 476, Yclm, WA 98597
Mr. Stan 7.ielinski, Architect, F,rickson McGovern, 120 131 S` Street S., Tacoma, WA 98444-4804
C:~Bob'sFiles\03157 Yelm New Jr High School\Correspondsuice\I22304 Transmit Yelm DR DWG.DOC
Civil * Municipal * Geotechnical Engineering and Planning
~eceived
DEC 2 3 2004
Community Development I j~ pf THEp,, ~~I OFFICIAL USE ONLY
I?epartment ~,9~
~
City of Yelm °' Date Received
P.O. Box 479
Yelm, WA 98597 x~~ M Received By:
CIVIL PLAN REVIEW APPLICATION USE BLACK INK ONLY
~: Y~u~ en~-n~,uw-Ty sc.HOO~s PROPER'IYIACAIION:
iress: t D l 1~l _ I`~ ST r~ E T
' 8e State: Y~LM ,~/ A
: ~igSB7 Phone: 31~-458 -lrl Z8 North South ~ West side of:
(roadname): CA2T~2 ST. SE
plicant EIZ-Ll N l~ 13121L LA N i~ seta~een (road name) ~', q 2TE(Z ~ T. ~E
V E LM CO M M U,N ITy SU-i~ 0 OI~L And (road name) M 1 l~L R.~ . Sw
are~: PO 3ox 4'1~
~ ana state: 11 EI.M ~ W A
'p: ei 8'Sq 7 phone: ~(pp -4 SFS - to I Z~ PropertyRdclress: ~ ~I~DS f~rR.-T~ Q. S?. SF
g,neer. IZU6~T TArUSG41ER
J~'120ME h1. MOR.1Z.lSS~ TTE `1- ASSOC, Section: 2-S Township ~~ Range I E
ciress: I'?0o CDOPE72 PT. RD . SW t# B-2
~ty & state: O L~1 M P I l4 ~ W F1
' : ~l$SD Z ~one: 3l~0 -3SL-~14 Slo Assessors Parcel No. 2-I ~ ZZS ~~ d l O O
UMMARY OF RF.QUF.S7' (Iast type of uses)
N~l !tiN d~ -!~ (to S O l.r 'OR OFFlCIAL U8E ONLY
Yre Dlstrlct Rsquirements Yes No
~re Flow R~equined p~m
o, of proposed dwellic~ units:
' ensons of property: ~JO .LO AUZ~ S i-ater connect}~on estimabe
csver conncction estimate
~semeats requ9red
tal sq.ft oisite: i, 33 Z. ~I 3S SF Ng2ttof-way required
tat sq.t~. ~r, bu~cungs: ~18 ,~-1 ~-I l~ sG
tond~ng requ9red
tal sq. R in paved and covereci surfaces (indude bwldings,
sidew2lks, and parl~g lots)
iiscellaneous
A cursory check of the plans against the attached plan checklist w~l be made by the Development
Engineer. If the plans meet the minimum checklist requirements as to content, they will be routed to the
appropriate City staff and the plan review process will begin. ff m~n~mum checklist requirements are not
met, plans will be retumed to sui~mitting engirieer.
R:\Community DevelopmentlForms & ProcedureslCivilPlanRcview\CivilPlanApp.doc
8/01
JEROME W. MORRISSE~TE ~ ASSOC., IP6C. `1O6 ~~~E'~~'^~ ~ ~~~'~'Y' `~ ~~,-~.t~~~- ' `~~~:-a~
1700 Cooper Point Rd. S.W., #B2 SHEEf NO. ` oF ?
OLYMPIA, WASHINGTON 98502-1110 ~
(360) 352-9456 FAX (360) 352-9990 CALCULATED BY DATE l2- Z 2~~
JOB NUMBER ~3~7~ CHECKEDBY ~ DATE ~~'?Z~~~
~
,~.
JEROME W. NiORRISSETfE & ASSOC., fMC.
1700 Cooper Point Rd. S.W., #B2
OLYMPIA, WASHINGTON 98502-1110
(360) 352-9456 FAX (360) 352-9990
JOB NUMBER
~og 1~'~J ~a FzLi a~ ~/~ r~~ ~.~ S~.r~oz -`t'~~-v~t
SHEET NO. °~ OF ~
CALCUTATED BY DATE ! ~.'~ 2~-'~U ~
CHECKEDBY DATE i~ ~Z~a~
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XERXES CORPORATION
Dipstick Calibration Chart 50,000 Galion - 12' Diameter SW Tank
DIPSTICK
READING
GALLONS DIPSTICK
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READING I
GALLONS I
1/8 9 71/8 1010 141/8 2739 211/8 4918 281/8 7430 351/8 10198
1/4 15 7 1/4 1036 14 1/4 2775 21 1/4 4960 28 1/4 7477 35 1/4 10249
3/8 22 7 3/8 1062 14 3/S 2810 21 3/8 5003 28 3/8 7524 35 3/8 10300
1/2 29 7 1/2 1 Q89 14 1/2 2846 21 1/2 5045 28 1/2 7572 35 1/2 10352
5/8 37 7 5/8 1115 14 5/8 2882 21 5/8 5087 28 5/8 7620 35 5/8 10403
3/4 46 7 3/4 1142 14 3/4 2918 21 3/4 5130 28 3/4 7667 35 3/4 10455
7/8 56 7 7/8 1169 14 7B 2954 21 7/8 5173 28 7/8 7715 35 7/8 10507
1 66 8 1196 15 2990 22 5216 29 7763 36 10559
11/8 77 81/8 1223 151/8 3026 221/8 5258 291/8 7811 361/8 10610
11/4 88 81/4 1253 151/4 3063 221/4 5302 29114 7859 361/4 10662
1 3/8 100 8 3/$ 127$ 15 3/8 39 00 22 3/8 5345 29 3/8 7907 36 3/8 10714
1 1/2 112 8 1/2 1306 15 1/2 3136 22 1/2 5388 29 1i2 '955 36 9/2 10766
1 5/8 125 8 5/8 1334 15 5/8 3173 22 5/8 5431 29 5/8 8003 36 5/8 10818
1 3/4 138 8 3/4 1362 15 3/4 3210 22 3/4 5475 29 3/4 8052 36 3/4 10870
1 7/8 152 8 7/8 1391 15 7/8 3247 22 7/8 5518 29 7/8 8100 36 7/8 10923
2 166 9 1420 16 3285 23 5562 30 8149 37 10975
21/8 180 91/8 1448 161/8 3322 2318 56Q5 301/8 8197 371/8 11Q27
2 1/4 195 9 1/4 1477 16 1/4 3360 23 1/4 5649 30 1/4 8246 37 1/4 11079
2 3/8 210 9 3/8 1507 16 3/8 3397 23 3/8 5693 30 3/8 8294 37 3/8 11132
2 1/2 226 9 1/2 1536 16 1/2 3435 23 1/2 5737 30 1/2 8343 37 1/2 11184
2 5/8 242 9 5/8 1566 16 5/8 3473 23 5/8 5781 30 5/8 8392 37 5!8 11237
2 3/4 258 9 3/4 1595 16 3/4 3511 23 3/4 5826 30 3/4 8441 37 3/4 11289
2 7/S 275 9 7/8 1625 16 7!8 3549 23 7/8 5870 30 718 8490 37 7/8 11342
3 292 10 1655 17 3588 24 5914 31 8539 38 11395
3 1/8 309 10 1/8 1686 17 1/8 3626 24 1/8 5959 31 1/8 8588 38 1/8 11447
3 1/4 327 10 1/4 1716 17 1/4 3665 24 1/4 6003 31 1/4 8637 38 1/4 11500
3 3/8 345 10 3/8 1747 17 3/8 3703 24 3/8 6048 31 3/8 8687 38 3/8 11553
3 1/2 363 10 1/2 1777 17 1/2 3742 24 1/2 6093 31 1/2 8736 38 1/2 11606
3 5/8 382 10 5/8 1808 17 5/8 3781 24 5/8 6138 31 5/8 8786 38 5/8 11659
3 3/4 400 10 3/4 1839 17 3/4 3820 24 3/4 6183 31 3/4 8835 38 3/4 11712
3 7!8 420 10 7/8 1871 17 7/8 3859 24 7/8 6228 31 7/8 8885 38 7/8 11765
4 439 11 1902 18 3899 25 6273 32 8934 39 ~1818
4 1/8 459 11 1/8 1934 18 1/8 3938 25 1/8 6318 32 1/8 8984 39 1/8 11871
41/4 479 111/4 1966 181/4 3978 251/4 6363 321/4 9034 391/4 11925
4 3/8 499 11 3/8 1997 18 3/8 4017 25 3/8 6409 32 3/8 9084 39 3/8 11978
4 1/2 520 11 1/2 2030 18 1/2 4057 25 1/2 6454 32 1/2 9134 39 1/2 12031
4 5/8 541 11 5/8 2062 18 5/8 4097 25 5/8 6500 32 5/8 9184 39 5/8 12085
4 3/4 562 11 3/4 2094 18 3/4 4137 25 3/4 6545 32 3/4 9234 39 3/4 12138
4 7/8 583 1 i 7/8 2 i 27 18 i i8 4177 25 7/3 6591 32 7/8 9284 39 7/8 12192
5 605 12 2160 19 4217 26 6637 33 9334 40 12245
5 1/8 627 12 1/8 2192 19 1/8 4257 26 1/8 6683 33 1/8 9384 40 1/8 12299
51/4 649 121/4 2226 191/4 4298 261/4 6729 331/4 9435 401/4 12352
5 3/8 672 12 3/8 2259 19 3/8 4339 26 3/8 6775 33 3/8 9485 40 3/8 12406
5 1/2 694 12 1/2 2292 19 1/2 4379 26 1/2 6821 33 1/2 9535 40 1/2 12460
5 5/8 717 12 5/8 2326 19 5/8 4420 26 5/8 6868 33 5/8 9586 40 5/8 12514
5 3/4 740 42 3/4 2359 99 3/4 4461 26 3/4 6914 33 3/4 9637 40 3/4 12568
5 7/8 764 12 7/8 2393 19 7/8 4502 26 7B 696C 33 7,'8 9687 40 7/8 12621
6 787 13 2427 20 4543 27 7007 34 9738 41 12675
61/8 811 131/8 2461 201/8 4584 271/8 7054 341/8 9789 411/8 12729
6 1/4 835 13 1/4 2495 20 1/4 4626 27 1/4 7100 34 1/4 9840 41 1/4 12783
6 3/8 860 13 3/$ 2530 20 3/8 4667 27 3/8 7147 34 3/8 9891 41 3/8 12838
6 1/2 884 13 1/2 2564 20 1/2 4709 27 1/2 7194 34 1/2 9942 41 1/2 12892
6 5/8 909 13 518 2599 20 5/8 4750 27 5/8 7241 34 5/S 9993 41 5/8 12946
6 3/4 934 13 3/4 2634 20 3/4 4792 27 3/4 7288 34 3/4 10044 41 3/4 13000
6 7/8 959 13 7/$ 2669 20 7/8 4834 27 7/8 7335 34 7/8 10095 41 7/8 13054
7 985 14 2704 21 4876 28 7382 35 10146 42 13109
^^
XERXES CORPORATION 7901 XERXES AVENUE SOUTH, MINNEAPOLIS, MN 55431 -(952) 887-1890
XERXES CORPORATION
Dipstick Calibration Chart 50,000 Gallon - 12' Diameter SW Tank
DIPSTICK
RE~tDfHG
GRLLONS DIPSTICK
R~RD~fYv^
GRZZON& DIPSTICK
RERDING
GAl.LONS DIPSTICK
READING
GALLONS DIPSTICK
READING
GALLONS DIPSTICK
READING
GALLONS
421/8 13163 491/8 16277 561/8 19497 631/8 22782 701/8 26093 771/8 29394
42 1/4 13218 49 1/4 16334 56 1/4 19555 63 1/4 22841 70 1/4 26152 77 1/4 29452
42 3/8 13272 49 3/8 16391 56 3/8 19613 63 3/8 22900 70 3/8 26211 77 3/8 29511
42 1/2 13327 49 1/2 16448 56 1/2 19672 63 1/2 22959 70 1/2 26270 77 1/2 29569
42 5/8 13381 49 5/8 16504 56 5/8 19730 63 5/8 23018 70 5/8 26329 77 5/8 29628
42 3/4 13436 49 3/4 16561 56 3/4 19788 63 3/4 23077 70 3/4 26389 77 3/4 29687
42 7/8 13491 49 7/8 16618 56 7/8 19846 63 7/8 23136 70 7/8 26448 77 7/8 29745
43 13545 50 16675 57 19905 64 23195 71 26507 78 29804
43 7/8 13600 50 1/8 16732 57 1/8 19963 64 1 B 23254 71 1/8 26566 78 1/8 29862
431/4 13655 501/4 16789 571/4 20021 641/4 23313 711/4 26625 781/4 29921
43 3/8 13710 50 3/8 16846 57 3/8 20080 64 3/8 23372 71 3/8 26684 78 3!8 29979
43 1/2 13765 50 1/2 16903 57 1/2 20138 64 1/2 23431 71 1/2 26743 78 1/2 30037
43 5/8 13820 50 5/8 16960 57 5/8 20197 64 5/8 23490 71 5/8 26802 78 5/8 30096
43 3/4 13875 50 3/4 17017 57 3/4 20255 64 3/4 23549 71 3/4 26861 78 3/4 30154
43 7/8 ?3930 50 7/8 17074 57 7/8 20314 64 7/8 23608 71 7/8 26921 78 7/8 30213
44 13985 51 17131 58 20372 65 23667 72 26980 79 30271
44 1/8 14040 51 1/8 17188 58 1/8 20430 65 1/8 23727 72 1/8 27Q39 79 1/8 30329
44 1/4 14095 51 1/4 17246 58 1/4 20489 65 1/4 23786 72 1/4 27098 79 1/4 30388
44 3/8 14150 51 3/8 17303 58 3/8 20547 65 3/8 23845 72 3/S 27157 79 3/8 30446
441/2 14205 511/2 17360 581/2 20606 651/2 23904 721/2 27216 791/2 30504
44 5/8 14261 51 5/8 17417 58 5/8 20665 65 5/8 23963 72 5/8 27275 79 5/8 30563
44 3/4 14316 51 3/4 17475 58 3/4 20723 65 3/4 24022 72 3/4 27334 79 3/4 30621
44 7/8 14371 51 7/8 17532 58 7/8 20782 65 7/8 24081 72 7/8 27393 79 7/8 30679
45 14427 52 17589 59 20840 66 24140 73 27452 80 30737
45 1/8 14482 52 1/8 17647 59 1/8 20899 66 1/8 24200 73 1/8 27511 80 1/8 30796
45 1/4 14538 52 1/4 17704 59 1/4 20958 66 1/4 24259 73 1/4 27570 80 1/4 30854
45 3/8 14593 52 3/8 17762 59 3/8 21016 66 318 24318 73 3/8 27629 80 3/8 30912
451/2 14649 521/2 17819 591/2 21075 661/2 24377 731l2 27688 801/2 30970
45 5/8 14705 52 5/8 17877 59 5/$ 21134 66 5/8 24436 73 5B 27747 80 5/8 31028
45 3/4 14760 52 3/4 17934 59 3/4 Z'f 192 66 3i4 24495 73 3,'~ 278J6 &0 3/4 39D86
45 7/8 14816 52 7/8 17992 59 7/$ 21251 66 7/8 24555 73 7/8 27865 80 7/8 31144
46 14872 53 18049 60 21310 67 24614 74 27924 81 31202
46 1/8 14927 53 1/8 18107 60 1/$ 21368 67 1/8 24673 74 1/8 27983 81 1/8 31260
46 1/4 14983 53 1/4 18165 60 1/4 21427 67 1/4 24732 74 1/4 28042 81 1/4 31318
46 3/8 15039 53 3/8 18222 60 3/8 21486 67 3/8 24791 74 3/8 28101 81 3/8 31376
46 1/2 15095 53 1/2 18280 60 1/2 21545 67 1/2 24850 74 1/2 28159 81 1/2 31434
46 5/8 15151 53 5/8 18338 60 5/8 21603 67 5/8 24910 74 5/8 28218 81 5/8 31492
46 3/4 15207 53 3/4 18395 60 3/4 21662 67 3/4 24969 74 3/4 28277 81 3/4 31550
46 7/8 15263 53 7/8 18453 60 7/8 2172 i o7 7/3 25028 74 7/8 28336 81 7/8 31603
47 15319 54 18511 61 21780 68 25087 75 28395 82 31666
471/8 15375 541/8 18569 611/8 21839 681/8 25146 751/8 28454 8218 31724
47 1/4 15431 54 1/4 18627 61 1/4 21898 68 1/4 25205 75 1/4 28513 82 1/4 31782
47 3/8 15487 54 3/8 18684 61 3/8 21956 68 3/8 25265 75 3/8 28571 82 3/8 31839
47 1/2 15544 54 ~/2 18742 61 ~12 22095 68 9/2 25324 75 1/2 28630 82 1/2 31897
47 5/8 15600 54 5/8 18800 61 5/8 22074 68 5/8 25383 75 5/8 28689 82 5/8 31955
47 3/4 15656 54 3/4 18858 61 3/4 22133 68 3/4 25442 75 3/4 28748 82 3/4 32013
47 7/8 15712 54 7/8 18916 61 7/8 22192 68 7/8 25501 75 7/8 28807 82 7/8 32070
48 15769 55 18974 62 22251 69 25560 76 28865 83 32128
48 1/8 15825 55 1/8 19032 62 1/8 22310 69 1/8 25620 76 1/8 28924 83 1/8 32186
481/4 15882 551/4 19090 621/4 22369 691/4 25679 761/4 28983 831/4 32243
4$ 3/8 15938 55 3/8 19148 62 3/8 22428 69 3/8 25738 76 3/8 29042 83 3/8 32301
4$ 112 15995 55 1/2 19206 62 1/2 22487 69 1/2 25797 76 1/2 29100 83 1/2 32358
4$ 5!8 16051 55 5/8 19264 62 5/8 22546 69 5/8 25856 76 5/8 29159 83 5/8 32416
4$ 3/4 16108 55 3/4 19322 62 3/4 22605 69 3/4 25915 76 3/4 29218 83 3/4 32473
48 7/8 16164 55 7/8 19381 62 7/8 22664 69 7/8 25975 76 7/8 29276 83 7/8 32531
49 16221 56 19439 63 22723 70 26034 77 29335 84 32588
^^
XERXES CORPORATION 7901 XERXES AVENUE SOUTH~ MINNEAPOLIS~ MN 55431 -(952j 88T•1890
XERXES CORPORATION
Dipstick Calibration Chart 50,000 Gallon - 12' Diameter SW Tank
DIPSTICK
READING
GALLONS DIPSTICK
READING
GALLONS DIPSTICK
READING
GALLONS DIPSTICK
READING
GALLONS DIPSTICK
READING
GALLONS ~IPSTICK
READING
GALLONS
84 1/8 32646 91 1/8 35810 98 1/8 38845 105 1/8 41704 1 12 1 B 44334 119 1/8 46666 j
841f4 32703 91 1f~ 35866 98 1f4 38898 1D5 1f4 41753 112 7I4 44378 119 1I4 46705
84 3/8 32760 91 3/8 35921 98 3/8 38951 105 3/8 41803 112 3/8 44423 119 3/8 46743
84 1/2 32818 91 1/2 35976 98 1/2 39003 105 1/2 41852 112 1/2 44467 119 1/Z 46781
84 5/8 32875 91 5/8 36032 98 5/8 39056 105 5/8 41900 112 5/8 44511 119 5/8 46819
84 3/4 32932 91 3/4 36087 98 3/4 39108 105 3/4 41949 112 3/4 44555 119 3/4 46857
84 7/8 32990 91 7/8 36142 98 7/8 39161 105 7B 41998 112 7/8 44599 119 7/8 46895 ;
~
85 33~47 92 36'l98 99 39213 106 42047 1°~3 44643 '420 ~69JJ
85 1/8 33104 92 1/8 36253 99 1/8 39265 106 1/8 42095 113 1/8 44687 120 1/8 46970
85 1/4 33161 92 1/4 36308 99 1/4 3931 S 106 1/4 42144 113 1/4 44731 120 1/4 47008
85 3/8 33218 92 3/8 36363 99 3!8 39370 106 3/8 42192 113 3/8 44774 120 3/8 47~45
85 1/2 33276 92 1/2 36418 99 1/2 39422 106 1/2 42241 113 1/2 44818 120 1/2 47082 ~
85 5/8 33333 92 5/8 36473 99 5/8 39474 106 5/8 42289 113 5/8 44861 120 5/8 47119
85 3/4 33390 92 3/4 36528 99 3/4 39526 106 3/4 42337 1 13 3/4 44905 120 3/4 47156
85 7/8 33447 92 7/8 36583 99 7/8 39578 106 7/8 42386 113 7/8 44948 120 7l8 47193
86 33504 93 36638 100 39630 107 42434 114 44991 121 47230
86 1/8 33561 93 1!8 36692 100 1/8 39682 107 1/8 42482 114 1/8 45034 1 Z 1 1/8 47266 ;
86 1/4 33617 93 1/4 36747 100 1/4 39734 107 1/4 42530 114 1/4 45077 121 1/4 47302
86 3/8 33674 93 3!8 36802 100 3/8 39786 107 3/8 42577 114 3/8 45120 121 3/8 47339
86 1/2 33731 93 1/2 36857 100 1/2 39837 107 1/2 42625 114 1/2 45162 121 1/2 47375
86 5/8 33788 93 5/8 36911 100 5/8 39889 107 5/8 42673 114 5/8 45205 121 5/8 47411
86 334 33845 93 3I4 36966 100 3/4 39941 107 3/4 42721 114 3/4 45248 121 3/4 47447
86 7/8 33902 93 7/8 37020 100 7/8 39992 107 7/3 42768 114 7/8 45290 121 7/8 47482 j
87 33958 94 37075 101 40044 108 42816 115 45332 122 47518
87 1/8 34015 94 1/8 37129 101 1/8 40095 108 1/8 42863 115 1/8 45375 122 1/8 47553
87 1/4 34072 94 1/4 37184 101 1/4 40146 108 1/4 42910 115 1/4 45417 122 1/4 47589
87 3/8 34128 94 3/8 37238 101 3/8 40197 108 3/8 42957 115 3/8 45459 122 3/8 47624
87112 34'~85 34~~f2 37292 ^~Oi 112 ~0249 ti081i2 43D05 115112 455DD 1221/2 47659
87 5/8 34241 94 5/8 37347 101 5/8 40300 108 5/8 43052 115 5/8 45542 122 5/8 47693
87 3/4 34298 94 3/4 37401 101 3/4 40351 108 3/4 43099 115 3/4 45584 122 3/4 47728
87 7/8 34354 94 7/8 37455 101 7/8 40402 108 7/8 43145 115 7B 45625 122 7/8 47763
88 34411 95 37509 102 40453 109 43192 116 45667 123 47797
88 1/8 34467 95 1/8 37563 102 1/8 40504 109 1/8 43239 116 1/8 45708 123 1/8 47831
881/4 34524 951/4 37617 1~12114 4Q554 1091l4 43286 116114 45?49 1~23'~f4 43$65
88 3/8 34580 95 3/8 37671 102 3/8 40605 109 3/8 43332 116 3!8 45791 123 3/8 47899
88 1/2 34636 95 1/2 37725 102 1/2 40656 109 1/2 43379 19 6 1/2 45832 123 1/2 47933
88 5l8 34693 95 5/8 37779 102 5/8 40707 109 5/8 43425 116 5/8 45873 123 5/8 47967
88 3/4 34749 95 3/4 37833 102 3/4 40757 109 3/4 43471 116 3/4 45913 123 3/4 48000
88 7/8 348G5 95 7i8 37886 102 7/8 40808 109 7/8 43517 110 7!8 45954 123 7/8 48034
89 34861 96 37940 103 40858 110 43564 117 45995 124 48067
89 1/8 34917 96 1/8 37994 103 1/8 40908 110 1/8 43610 117 1/8 46035 124 1/8 4S 100
891/4 3A973 961/4 38047 1031/4 40959 1101/4 43655 1171/4 46075 1241/4 48133
89 3/8 35030 96 3/8 38101 103 3/8 41009 110 3/8 43701 117 3/8 46116 124 3/8 48166
891l2 35086 961/2 38154 1031/2 41059 1101/2 43747 1171/2 46156 1241/2 48198
89 5/8 35142 96 5/8 38208 103 5/8 41109 110 5!8 43793 117 5/8 46196 124 5!8 48231
89 3/4 35197 96 3/4 38261 103 3!4 41159 110 3/4 43838 1 17 3/4 46236 124 3/4 48263
89 7/8 35253 96 7/8 38315 103 7/8 41209 110 7/8 43884 117 7/8 46275 124 7/8 48295
90 35309 97 38368 104 41259 111 43929 118 46315 125 48327
1/8 35365 971/8 38 1 1 4 41' b 1 1 1
4 4 4 ~} 4 41 111 4 1 4 1 4
a4 4 1 1 4
~
~ 1 4 4 1
4 b 4 4 5 11 4 4 4
4 4 1 4 4
~ ~ 4
XERXES CORPORATION 7901 XERXES AVENUE SOUTH~ MINNEAPOLIS~ MN 55431 -(952) 887-1890
XERXES CORPORATION
Dipstick Calibration Chart 50,000 Gallon - 12' Diameter SW Tank
DIPSTICK
READING
GALLONS DIPSTICK
READING
GALLONS DIPSTICK
READING
GALLONS DIPSTICK
READING
GALLONS DIPSTICK
READING
GALLONS DIPSTICK
READING
GALLONS
126 1/8 48607 128 1/8 49069 130 1/8 49481 132 1/8 49834 134 1/8 50112 136 1/8 50284
126 1/4 48637 128 1/4 49097 130 1/4 49505 132 1/4 49853 134 1/4 50127 136 1/4 50288
126 3/8 48667 128 3/8 49124 130 3/8 49529 132 3/8 49873 134 3/8 50141 136 3/8 50292
126 1/2 48697 128 1/2 49151 130 1/2 49552 132 1/2 49892 134 1/2 50154 136 1/2 50293
126 5/8 48727 128 5/8 49177 130 5/8 49575 132 5/8 49911 134 5/8 50167
126 3/4 48757 128 3/4 49204 130 3/4 49598 132 3/4 49930 134 3/4 50180
126 7/8 48786 128 7/8 49230 130 7/8 49621 132 7/8 49948 134 7/8 50192
127 48815 129 49256 131 49643 133 49966 135 50204
127 1/8 48844 129 1/8 49282 131 1/8 49666 133 1/8 49983 135 1/8 50215
127 1/4 48873 129 1/4 49308 131 1/4 49688 133 1/4 50001 135 1/4 50226
127 3/8 48902 129 3/8 49333 131 3/8 49709 133 3/8 50018 135 3/8 50236
127 1/2 48930 129 1/2 49358 131 1/2 49731 133 1/2 50034 135 1/2 50246
127 5/8 48958 129 5/8 49383 131 5/8 49752 133 5/8 50051 135 5/8 50255
127 3/4 48986 129 3/4 49408 131 3/4 49773 133 3/4 50067 135 3/4 50263
127 7/8 49014 129 7/8 49433 131 7/8 49793 133 7/8 50082 135 7/8 5Q271
128 49042 130 49457 132 49814 134 50097 136 50278
XERXES CORPORATION 790'1 XERXES AVENUE SOUTH, MINNEAPOLlS~ MN 55431 -(952) 887-'1890
b' i ~ ~
J
1700 Cooper Point Road SW, #B-2, Olympia, WA 98502-1110
(360) 352-9456 • FAX (360) 352-9990
November 16, 2004
Mr. James E. Gibson, Development Services Engineer
City of Yelm
105 Yetm Avenue
Yelm, Washington 98597
Re: Yelm Community Schools
New Junior High School
_ Fire Flow Calculations
Dear Mr. Gibson:
Please find enclosed for your preliminary review the "Fire Flow Calculations" provided to
us by Skillings/Connolly Engineers dated November 11, 2004. I believe the next step is
to have a meeting at Yelm with yourself, Gary Carlson and Steve Barber aiong with the
appropriate consulting engineers for Yelm Community Schools, including myself.
Please contact me at your earliest convenience in order to arrange a meeting with you
in regard to the fire flow issue at the subject location. Please feel free to contact me if
you have any questions.
Sincerely,
Jerome W. Morrissette & Associates Inc., P.S
J ome W. rris ette, P.E.
Cc: Mr. Stan Zielinski, Erickson McGovern Architects (with attachment)
Mr. Chris Caffee, BCE Engineer's (with attachment)
Mr. Erling Birkland, Yelm Community Schools (letter only)
C:1Docurnents and SettingslKari K~y~fmar~~nl~~~~~Z~Err~k.~l~{~~~r~~r~~~~~~Q~~;p~ri~7~/~.~nt~c~~ibson 11-16-04.doc
s
~ ~ s~c~ «.~ n~s
cor~NO~`~
November 11, 2004
#04045
Mr. Jerry Morrissette, PE
Serome ViT. Moizissette & Associates
1700 Cooper Point Rd SW #B2
Olympia, WA 98502
RE: Yelm School Fire Flo~~~ Calcula~ions
Dear Jen-y;
The fire flo«r infornlation that you requested for the new Yelm Junior High School was developed usin~ the
City of YeIm's water system model and the infoi•mation that youi• office prQVided on the attached dsav,;i»g.
The City's water stoi•age tank levels run beriveen ele~~ation 477' ~~~hen the tanks are full to 4~6.2' at the
bottom of the Fire Suppression Storage. I have included a reservoir storage coinponent drawing ~~~ith this
letter. VVe ran three different scenarios with for each of the trial types that yorl renuested to see w~hat tl~e fire
flow conditions are given the water levels in the tanl:s.
The first table below is the model calculations ~vith the water storage tanlcs full. The tivater level is at
elevation 477'. The second table is with tlle stora~e tanks at midway point be~t~~-een full and the bottom of
the fire suppression stora;e, elevation 463. The third table is the model results «Tith the ~~vater level in the
storage tank at the bottom of the fire suppi-ession storage, elevation 4~6.0.
In all three scenarios the well pump is in operation supplying ~vater to the sysfem at 1,200gpni.
Scenario #1: Water Level in the Stora;e Tanlc at 477'.
Trial #1 10" Dia. Feed Line ~~°itti 8" Dia. Loo Line
Node l~ode
Elevation Calculated Fire Flow
(~ m Fire FIo~i~ Residual Pressure
si~
A 3~7 2,10~ 21.23
B 357 2.101 21.27
C 356 2,052 20.01
D 3~8 2,043 20.01
E 354 2,020 23.42
F 359 1.989 21.73
Trial #2 All 10" Dia. Line ~
Node Node
Elevation Calculated Fire Flow (gpm) Fire Flow Residual Pressure
sia)
A 3~7 2,49~ 21.81
B 357 2,087 21.87
C 356 2,135 20.01
D 358 2,077 20.8~
E 354 2,057 2~.46
F 359 2,023 21.73
CtVL! • Te~~NS~O~T~l'ION • E[~VIe~ONNlENT~~ • CO[~SFe'~l~~'PIO[~
~o aox 5oso La~¢y, wQ:n~ngcQn gs~o9-s~ga
360-491-3399 1-800-454-75k5 Fax 36f1-49F-3857
E-maii skil7ings@sici6lings.corts www.skiili~gs.cvrn
Trial #3 A118' Dia. Line
Node Node
Elevation Calculated Fire FIow (g~7m) Fire Floia~ Residual Pressure
~psia~
A ~57 2,126 20.48
B 3~7 2,109 20.56
C 356 2,033 20.U1
D 358 2,023 2U.01
~ 354 2,033 22.53
F 3~9 1,949 21.73
Scenario #2: V~~ater Level in the Storage Tanl: at 463'.
Tria! #1 10" Dia. Feed Line «~ith 8" Dia. Loo Line
I~~ode I~rode
Elevation Calculated Fire Flotiv (gpm) Fire Flow Residual Pressure
~PSIa
A 357 1;86I ~ 21.52
B 357 1,8~6 21.~5
C 356 1,838 20.00
D 358 1,824 20.00
E ~~4 1,785 23.52
F 359 1,75~ 21.73
Trial #2 All 10" Dia. Line
Node Node
~levation Calculated Fire Flow (gpm) Fire Flow Residual Pressure
sia~
A 357 1,966 21.91
B 357 1,961 21.9~
C 356 2,023 20.00
D ~ 358 1,952 21.02
E 354 1,932 23.51
F 3~9 1,b99 ~ ~_ 21.73 -
Trial #3 Ali 8' Dia. Line
Node Node
~levation Calculated Fire Flow (gpm) Fire Tlow Residual Pressure
~si°~
A 3~7 1,877 20.93
B 357 1,864 20.99
C 3~6 1,823 20.00
D ;~~ 1,808 20.00
E 354 1,797 22.81
l~ ,;9 1,724 21.73
Scenai•io #3: Water Level in the Stoi•age Tank at 456'.
Trial #1 10" Dia. Feed Line ~vith 8" Dia. Loo Line
Node Node
Elevation Calculated Fire Flow (gpm) Fire Flow Residual Pressure
si )
A 357 1,673 21.70
B 3~7 1,668 21.73
C 3~6 1,675 20.00
D 358 1,647 20.00
E ~54 1,645 23.~9
F 359 1;581 ~ 21.73
Trial #2 All 10" Dia. Line
Node Node Calculated Fire Flo~v (gpm)
~levation Fire Flow Residual Pressure
( si~}
A 357 1,661 22.08
B 357 1,656 22• 12
C 356 1,741 20.00
D 358 ( 1,649 21.32
E 354 j 1,634 23.61
F 359 1;607 I 21.73
Trial #3 All 8' Dia. Line
Node Node
Elevation Calculated Fire Flo~~- (~pin) Fire Flo«~ Residual Pressure
( si~)
A 357 1,6~7 21.21
B 357 1,674 21.26
C 356 1,660 20.00
D 358 1,641 20.28
E 354 1,61~ 23.00
~-- ,~9 -- 1,~50 21.73 ;
In addition we ran a model run with a demand of SOOgpm to determine the residual pressure. The residual
pressure ~rith the tank Icvel at 463' is 43.64psig.
Should you require any additional information, please contact me at 491-3399.
Cord~ ly,
~ ~~ ~
~ i~~' G ~
Brian K. Matthews, PE
Proj ect Managcr
BKM:p (~\sc-0\Data\Project`~004\04045 Yelm School District Fire Flow•\l 1-I 1-04 flo~+~ ]tr.doc)
Enclosure
cc: Earlin~ Birkland - Yelm Community Schools
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Jerome W. Morrissette & Associates Inc., P.S
1700 Cooper Point Road SW, #B-2, blympia, WA 98502-1110
(360)352-8456 / FRX (3&~)352-9990
LETTER OF TRANSMITTAL
TO: The City of Yelm Job No. 03157
P.O. Box 479 Date: 18 May 2005
Yelm, Wa. 98597 Attention: Mr. xim Gibson
Dev. Services Engineer
SUBJECT: Final Plan Submittal for Building Permit, Ridgeline Middle School
°ft~a
I am sending you attached the following items: ~~' '."
COPIES DATE DESCRIPTION
1 06 May 2005 24" x 36" Mylar Civil Drawings 30 total
1 06 May 2005 24" x 36" Reproducible Bond Civil Drawings 30 total
1 06 May 2005 11" x 17" Reduced Size Civil Drawings 30 total
2 May 2005 Drainage & Erosion Control Report
Jim,
The attached package for the Ridgeline Middle School is per the e-mail that you sent out 17 May 2005.
The ~chooi District is anxious to obtain the buzlding permit a.nd proceed with construction.
Should you have any questions or require additional information, please contact me at (360)352-9456, or
e-mail me at Scott@JWMorrissette.com
SIGNED: ~ `
Scott Sev s
Sr. Engineering Technician
cc Erling Birkland (Yelm School District)
Bob Tauscher (JWM&A)
Stan Zielinski (Erickson McGovern)
Civil / Municipal / Geotechnical Engineering and Planning