Agreement to Maintain Stormwater Facilities 001RETURN ADDRESS
Document
Numbers(s) of related documents
-~ nc t 1 i-~:r~ •_
Additional Refuence a~ on page
ts'rantOr~S~ (Last, Ftiret and Middle ipnidap
C.~111 C~lN~1LUllf~ JC~,~~S
.._~
ti'rantee~S~ easy First and Middle Initiaq
grantors on page
(~~,~ G~I"a~th-
Additional granttrs on page
Legal DOSCrlptlon (abbreviated form: i.e. loy block, plat or section, townshig range,
quarter/quarter)
~ Ae ditional legal is on page
Assessor's Property Tax Parcel/Account Number
_~l7~5/`/d/o0
Additional parcel u~ on page
The Auditor/Rernrder will rely on the information provided on this fornr. The s[affwill not read [he document
to verity the accuracy or completeness ofthe indering information provided herein.
I am requesting an emergency nonstandard recording for an additional fee as provided in RCW
36.t8.Oto. 1 understand that the recording processing requirements may rnver up or otherwise
obscure some par[ of the teat of the original document.
Signature of Requesting Party
3965850 Paqe 1 of 12
1 19/2001 09 06 nl't Rgreemenl
Iliur r,lon County Wsxiu ngton
ally Ot Yf_LM
urn Address
/ of Yelm
ni Merriman
Box 479
m, WA 98597
Document title(s) (or transactions contained therein):
1. Agreement to Maintain Stonnwater Facilities
Reference Number(s) of Documents assigned or released:
(on page of documents(s))
Grantor(s) (Last name, first name, middle initial)
L Yelm Community Schools
Grantee(s) (Last name, first name, middle initial)
1. City of Yelm
2.
Legal Description (abbreviated: i.e. lot, block, plat or section, township, range)
The north half of the southeast quarter of the northeast quarter of Section 25, Township 17
North, Range ]East, W.M. EXCEPT the east 20 feet for county road.
Assessors Property Tax ParceUAccount Number:
21725140]00
3965850
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COMMERCIAL/INDUSTRIAL
AGREEMENT TO MAINTAIN
STORMWATF,R FACILITIES ANU TO IMFLEMENT A
POLLUTION SOURCE CONTROL PLAN
BY ANU 6ETWEEN
YELM COMMUNITY SCHOOLS
ITS HEIRS, SUCCESSORS, OR ASSIGNS
(HEREINAFTER "OWNER")
ANU CI"rY OI' YIi L'~YI
(114:RIi1N~V~IIiR ".1l'RISUI(`rION°)
The upl:cep and nmintenance of stormwater lucilitics and the implementation of pollution
source control best managemart practices (BMP) is essential to the protection of water
resources. All property owners are espected to conduce business in a manner that
promotes environmental protection. "this Agreement contains specific provisions with
respect to maintenance of stonmvater lucilities and use of pollution source control BMP.
LEGAL DESCRIPTION:
RIDGELINE MIDULE SCIIOOt.
Parcel number2n25ia01ou, in the Ciiv of Yelm.
Whereas, OUTER has constructed improvements', including but not limited ro, buildings,
pavement, utilities and stormwater facilities on the property described above. In order to
further the goals of the JURISDICTION and to ensure the protection and enhancement of
water resources, the JURISDICTION .md OWNER hereby enter into [his Agreement.
The responsibilities ofeach parry to this Agreement are identified below.
OWNER SHALL:
(I) Implemem the storm~cutcr lirilitp maintenunce program included herein as
Attachment "A".
(2) Implement the polluuou source control program included herein as Attachment
..B..
(3) Maintain a record (in the Corm of a logbook) of steps taken to implemwt the
programs referenced in (I) and (2) above. The logbook shall be available for
inspection by Jurisdiction stall at 401 Coates Ave. N W during normal business
hours. "f he logbook will catalog the action lalwn, the name of the person who
performed the action, when it was done, how it was done, and any problems
encountered or follow-on actions recommended. Maintenance items ("problems")
listed in Attachmem °A" shall he inspected on a monthly or more frequent basis
as necessary. OWNLR is encouraged to photocopy the individual checklists in
3965850 Page 3 of 22
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Attachment "A" and use them to complete its inspections. "these completed
checklists would tlien, in combination, comprise the monthly logbook.
(4) Submit an annual report to the JURISDICTION rewarding implementation of the
programs referenced in Q) and (2) above. The report must be submitted on or
before May I ~ of each calendar year and shall contain, at a minimum, [he
folbwing:
(a) '.Name, address and telephone number of thr businesses, the persons, o[ the
firms responsible tort plan implementation- and the person completing the
report.
(h) "time period covered by the report.
(c) A chronological summary oC activities conducted to implement the programs
referenced in Q) and (2) above. A photocopy of the applicable sections of the
logbook, with any additional explanation needed, shall normally smftice. Cor any
activities conducted by paid panics not affiliated with OWNER, inclmde a copy of
the invoice for services.
(d) An outline of planned activities fur the nest year.
THE JURISDICTION SHALL:
(I) Provide technical assistance to OWNER in support of its operation and
maimenance activities conducted pursuant to its maintenance and source control
programs. Said assis'tence shall be provided upon request, and as Jurisdiction
time and resources permit, ut no charge to OWNER.
(2) Review the annual report and conduct a minimum of one (I) site visit per year to
discuss performance and problems with OWNER.
(3) Review this agreement with OWNER and modify it as necessary at least once
every three (3) years.
REMEDIES:
(I) If the JURISDICTION determines that maintenance or repair work is required to
be done to the stormwutcr fuilities' existing on O WN13R, property, the
JURISDICTION shall give the owner of the property within which the drainage
facility is located, and the person or agent in control of said property, notice of the
specific maintenance end/or repair required. The JU121SDICTION shall set a
reasonable time in which such work is to be completed by the persons who were
given notice. If the about required maintenance and/or repair is not completed
within the time set by the JURISDICTION, written notice will be sent to the
persons who were given notice stating the JURISDICTION'S intention to perform
3965850 Page 4 of 21
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such maintenance and bill the owner for all incurred expenses. The Jurisdiction
may also revoke stormwater utility rate credits for the quality component or
invoke surcharges to the quantity component of O Wn ER bill if required
maintenance is not pcrtbrnmd.
(2) If at any time the JURISDICTION determines that the existing system creates any
imminent threat to public health or welfare, the 1GRISDICTION may Lake
immediate measures to remedy said ducat. No notice to the persons listed in
Remedies (I), above, shall be required under such circumstances.
(3) The owner grants unrestricted authority to thc.IURISDICTION for access to any
and all stonnwatcr system features for the purpose of performing maintenance or
repair as may become necessary under Remedies 1 and/or 2.
(4) The person listed in (I). above. shall assume all responsibility for the cost of any
maintenance and for repairs io the sronnwater facility. Such responsibility shall
include reimbursement to the JURISDICI'IOV within 30 days of the receipt of the
Invoice for any such wort: pcr~onned. Overdue payments will require payment of
inrcrest at [he current legal rate for liquidutedjudgments. II legal action ensues,
any cost or Ices incurred by the JURISDICTION will be borne by nc~ parties
responsible for said reimbursements.
(5) 'The owner hereby grants to the .IURISDICTION alien against the above-
described property in an amount equal to the cost incurred by the
JURISDICfION to perform the maintenance or repair work described herein.
3965850 Page 5 of 22
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This Agrcemen[ is intended to protect the value and desirabilin~ of the real property described
above and to benef[ all the citizens of tie Jurisdiction. I[ shall run with the land and be binding
on ell paiYics having or acquiring Gam OWNGR or their successors any rights, title, or interest in
[hc propaYy or any part thereof, as well as their lisle, or interest in the property or any part
thereof, es well as [heir heir,,, successors, and assigns. They shall inure ro the benefit ofeach
presem or fumrc successor in in[erest of said propcity or an ~ art thereof, C~nteres~eiu, and
to Lhe benefit of all citizens of the JURISDICTION.
•/~
Alan Burke, Superintendent
Yelm ConnnunihSchools
STA'TC OF WAS111NG'fON
SS
COUNTY OF THURSTON )
On this' day and year personals}' appeared belbre me, ~~~ ~~~ and
known to be the individual(s) described, and who executed
the foregoing instrument and acknowledge the said instrument to be the tree and voluntary ac[
and deed for the uses and purposes tlrerein mentioned.
Given under my hand and official seal this ~ day of , 200.
~-
sw ~ Vo ry ublic ~n and for th Saro of
oton, residing in
Dated at ~ ~ ~~,~~,~ Washingioq this ! :~~ day of/`C ~,~ ~/ , 200%.
S"CATG OF WASHINGTON )
)SS
COUNTY OF'THURSTON )
-~- - '
On this day and year personally' appeared belbre me. ~ ..;~., ~ P ` 7 (<_ ,~3'~
who executed the li>regoiug Insn'ument and acknowledge the
said instrument ro be the fire and volunmiy ncl and decd of said Aqunicipal Corporation for the
uses and purposes therein mentioned and on oath stales he is authorized to execute the said
instrument
S1.
Given under my hand and olTic ial seal this _~(~ day of~x'~_t~.)}~, 200_[.
~4~' : ~_
Not~ry Public in and or [he State of
Washington, residi gin `t~,c ~7x (`;,
APPROVRD AS TO FORM:
3965850 Page 6 of 22
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INSTRUCTIONS FOR PERSON MAINTAINING
STOI2MWATER SYSTGD9
"fhe following pages describe the uminrcnanco needs of the s~ormwarer conveyance,
storage and disposal components of the system designed for this site. 'Phis maintenance
effort shall be the responsibility of tl1e YCLM CUMV4UNI'PY SCHOOLS or its assigned
representative. L1 generate system components should be inspected in accordance with
the Maintenance Checklists included as Attachment "A" a[ the rear of this document.
Use the suggested frcyucncy indicated on the Icft side oi'the Checldist 6'orms:
Q) Monthly (M) from November through April
(2) Annually (A), once in late summer (preferably September)
(3) After major storm events (S)>l inch in 24 hours.
Inspection findings should be recorded on photocopies of Maintenance Checklist Forms.
"fhe problems looked each time an inspection was performed should be checked off on
the forms. Maintaiunce should be undertaken to correct deficiencies Cound and
comments on problems found and actions taken entered on the lorms.
Completed Checklist Dorms should he filed and Incorporated in the annual report to be
issued in May of each year.
If you have specific questions or require technical assistance, contact the responsible
jurisdiction. Please do not hesitate to calk especially if you arc unsure whether a
situation you have discovered may be a problem.
:1965850 Page 7 of 22
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ATTACHMENT "A": MAINTENANCE PROGRAM
COVBR SHEET
Inspection Period:
Number of Sheets Attached:
Date Inspected:
A'ume of Inspector:
Inspector's Signature _.
3965850 Page 8 of 22
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ATTACHMENT "A" (CONTINUED)
Mainlenanre Checklist br Calrll Basins aM Inlets
Garage
SySlem LLndillpna Vlat $hpY0
Frequenry Feature ~ Problem CorMgions to check for Exist
No VasM1 w tlebris totaled
ImmlUialely in hoot ci
Tresn, debtls Tresn pr aegis in Iront of the calm basin vetch Dasin opening.
aM sediment opening is blockinA wpadty by more Dan Grate is kept clean and
M,B General in Or On Dasin l0°h. allows water lLenler.
Sediment or tlebris (in the basin) Thal
ceeds 1l3 ma depth hom Ina D9tlpm of No sediment or debris in
basin b Inved DI the lowest plpe'mlo or out me cater Dasin. CaIU
M the Dasin. Oasind out antl dean.
Trash or tlebris any inlet or pipe bloding
n Inlet antl oNlel pipes Ree
M B more loan 1fJ of
lls hei hl. of Vasn or aeons.
Slmdural
damage to Comer olfiame eaentles more loan 3u
name andl9r inch past LulO face into Ina street (f
M b slab a nwple . Frame Is even with cuN.
Top slab has nOlee larger loan 2 square
'Inches o! necks wide! Than 1I4 irlGl (intent
is to make sure all material is mooing into Top slab Is free of hales
M the basin . anb Grads.
Fxme not sininA Oush on lop slab. I e.,
separation of more Irian L4 inch of the Frame Is xMing Oush on
M name ham lM to slab. la s1aE.
Cracks wider than V2 into antl longer than
3 teal, any avitlenre of soil Dadides Basin replar<d or repaired
Crads in entering oteT basin brough cracks, or t0 design alaMaNS.
basin ainlanence person lodges trial s(runura is LOnlaclapmlessional
A wallslDOnom u Duna. rear brevaluatlOn.
e
Lrads wider ban l2 inch and longer loan
1 fool al the joint of any imeVaullet pipe or No cracks more hlan 1la
any evitlenm of soil parlides entering resat into wide at Ina joint of
A basin mrou hcracks. inleVOUtlet 1
Basin replaced or repaired
Basin nos senletl more man t into or nos lp tlesien slandarea.
SenlemenVm rotated more man4inches out Of Cpnlanaprolessipnal
A isali omens ali omens. en inaer for evaluation.
oe az
a emlwsxuc as na ura ore ge.
r
or dmer gas6oilnaM gasoline. ODnoaious wlor. Basin is
duA Om and
M,5 pollution odor, or sludge noteb. clears.
Outlet Dlpe Is Vegetation or mats growing in inleVOUllel
dogged wiln pipe Joints that is more Irian six inches tan Np vegetatlon or root
M, S vegetation and less this su inUes apart. growth present.
II yOll aR uOSUra Wlleifrel a prOObm euxlx, Dl9aae conWtl Na JutlaOlplOn end ask br
COmmenls'
A =Annual (Haler Or April prt(ered)
M = Monlnly (see scnBdule)
S = ARer major storms
3965850 Page 9 of 1.2
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LILT OF VLl fl
I I I I I I I I I I I I I I I I I I I I I I ~l I I I I I I I I I I I I I I I I I I I I I I I I I! I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I'.
Maintenance CMdlist br PoMs
ATTACHMENT "A" (CONTINUED)
nags
System
Frequency Feature J Problem Cor#ilions to shed for Cpntlitipns that Shoultl Exist
Dumping pl yartl wastes
auto as grass tlipping such
as Brass clippings ant
Dranphes into basin.
Unsignny a6umulahon of
TrashB nonaegradadl¢mat¢aals
debris such as Blass, plastic, Remove trash ana aebris ana dispose as
builtlup In metal, foam, and coat¢d prescribed Dy Ciry Waste management
M,$ General ontl. a r SeGion.
Vashrack Bar screen overoWlel more Replaw screen. Removelrash and tlebds
pluBBea or IM1an 25%mvared by aebris ontl dispose es preacrihetl by City Waste
M. S missln gr missln mans ement Seclipn.
Remove poisonous vegetation. w not spray
Any poisonous vegetation chemicals on vegelalion wildoN Obtaining
Poisonous which may constitute a guidance hom Ue Cooperative E#ension
M e station hazaN b Ills tic. Service and a royal hom the Cit
Presence of chemicels sutll
as naWral qas, oil and Fintl source¢of pollution ontl eliminal¢Ihem.
Firehazartl BasDline. obnoxio wloq Writer is hee hom noticeable wlpc otlpr.or
M 5 p1lNipn Door or stud enptetl. rnnWminatlon.
For grassy poMS, selaNvely Na1M, aerate.
and reaeea pours. Grass wbing
nnecessary umess dktstetl Dy aesthetics.
For wetland ponds, bona plant nurserygmwn
FDr grassy DOrrds. grds¢ vletland plants In bare areas. Contact the
cover is sparse ontl weedy Cooperative Fxlenson Service for OVetlion
Vegeladon or is overgrown. Far on invasive species such as purple
notgrowing wetlantl lwntls, plenla are IooeesUile and read canary grass. Pont
sparse ar invasive species bottoms should nave uniform dense
M ant. a e of desirtN tool s
nor e~m¢nw or rpaent
holes if tacilay Is atling as a
cram or Dorm. or any
evitl¢nce of water piping Rotlenta destroyetl and tlam or berm
0.otlent through tlam or barn via repaired. Comas the Thurston County
M holes rotlen[holes. HealthR aam¢nt br uitlanw.
Wh¢n ISelY6 aYf11 d¢ Wasps
and hornets inbrtare with
eintenence activities, or Insects tleshoyetl or removed from site.
W11¢n m0¢QUII050¢wm¢a CU0Ia4(CiCODerdllVa E#ensign $eIVCG fIN
M Insects uiaan
Tree growth does not allow
aintenanrc access or
Interferes wiN maintenance
acliviry (l e., slope mowing,
sill removal, of equipment
movements). dtrees era Trees ap not hintler maintenance aClivities.
not inteRering with access, Seledirely cultivate trees suU as alders for
A Tree rowN leave trees aline. Lrewootl.
Cheri around inlets ontl
outlets far signs of erosion.
Che k berms br signs of
slitling or settling. Action is
ne~etl where ¢naaea Fina tduses olertasion ana eliminatethem.
damag¢tlamag¢overt Then slopes should be slabahze0 by using
Erosion an inches Beep and where apProprieta erosion control measurels);eg..
Sitle slopes derma or el there is pglenhal for rgcF rentorcement, planting pf grass.
M of ontl enhancelexil cenlinuea enosion. cam action.
3965850 Page 10 of 22
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Acwmulata0 sedimetn mal
eaceetls 10% of Ne
deslgiretl poM aepm.
Burbd or paNally Ouri¢tl
Setliment ouget a4udum pmbeply Setliment tled^ed out tp tlesignetl pond
Stomg¢ bulNlup in Indlmles significant shape and dep0; po~M reseetletl tl
M area o(Itl satlmem de Mils. nec899a la canlro ert^sion.
Any part of dike which has
settbd a'ntllea l¢vrer Ivan DIkG snoukl ba built beck to Ina desgn
A Pontl dikes Settkmenm Ne deai neleveliprt ebwti¢n.
Onry one layer of rod
oats above na1Ne soil In
Emergenry area 5 s¢uare ket or laryer,
pveMawl Rock or any elmoaure to neliva
A s i1Me missin sail. fte lace redo to de9i n standaNS.
meryanry e o po as np area
overflow I Ove~llow wiN large rods to haMl¢
One TVne sDlllway mleeirg mergenry Merflave. Conlad Gly for guidance
11 you eB unsure Mwtner a pmpiem evsu, pmase wnma um •oiiwiouoi~ a~n, ea. ~m wvnnw
CmnmeMS:
A =Annual (MerUl pr Aptll prelered7
M = Mw01y (see schedule)
5 = Afler maKK elpmrs
3965850 Page 11 of 22
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ATTACHMENT"A"(CONTINUED)
Maintenance LMdlisl br InfilValion Systems
ralr~age
svslem
Frequenry Feature J Problem Contlitions to cM1eck for CoMitions lM1al $M1OUId Erlst
Trasn s eebns
buileup in See Manenace CM1eUllm for
M, 5 Gareral one Ponns. See Maintenance Lbedlisl IOr PUnes.
Poisonous See Malnlemace Checklist for
M elation PofMS. See Maintenance CM1ecklisl for POntls.
Fire Oazare or See Maimenace Checklist br
M.S Ilulion Panes. Sea Maintenance Checklist for Pones.
vegetagon not
growing or is See Maimenace CheJ.lisl for
M pve rown Pones. See MaMlenanm CM1ecklisl for Pones.
See Mainlerwce CM1ecklisl for
M Rotlent M1Oles Pontls. See Maintenance CM1ecklisl for Pones.
See Maimenace CM1ecklisl for
M Insects Pones. See Maintenance CM1ecklisl far POntls.'
Seeiment is remnvetl antllor lacility is
Asoil lepure le6l intlicatea cleanee sU that in(IValion system
Setlimenl facility is not working al iV wpIXS accereing to design. Asetlimenl
Slprege Euiltlup In eesigree cepabililies or was Iappinq area is inslallee to reeuce
A aRa 5 lem redl eesi N. seeimenl Vans M1 lnlo'm(iNralion ared.
Aetlilional volume Is eatlee 0rougn
Storage area excavalipn la pmvitle neetletl storage.
tlrains slowly Aseil tepure lest intlicatez Soil is aeroletl ant rololillee to improve
(more than a0 fatilily is not wonting al lls erainage. Gonlaq Oe Ciry for
haurs)or eesigneecepabililies or was informalien an il6 requieements
A pvemows incprteat tles netl. aNin exravalion.
r
My seeimenl and eebns filling
area Ic 10%ol tlepth Vom
sumo banam rn bpeom or oullal
Seeiment pipe or obsWCting flaw into Ne
M tra in area connector i Clean oN SUm to tlesi nee lh.
AUtl a napping area by ranstmming a
Saeimenl sump for senling of solitls. Segregate
VapplnB area Slo~mwaler enters infilnalion settling area hom rest of lacility.
One Time not reaenl area ehedl without Veatmenl. Conlapt Cll far uieance.
y wa~a ~mpemmn .n
Setlimenl one water flows through filler tlueng
M Rock linen: aeons heavy rain storms. Replace gravel in rock filler.
n you are unsu!¢ wrlelner a Droolem ends, please COnlaq Ne JunsOldion one ask tar leUnipl assislanca.
Comments:
A =Annual (March or Apil prekretl)
M = MonNly Isee sMetlule)
5 = Aler major storms
3965850 Page 12 of 22
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ATTACHMENT "A" (CONTINUED)
Maintenance Ghedlisl for Erelgy Dlssipmors
nage
•
System
Frequency Feature J ProDIBm Coneigons to rhed far Coneitiwsthat Shaultl Exist
Only one layer of rock exists above
Missing pr Na naWral sail In area 5 square
moves 1B¢t ar laryep p! any exposure to
q Rcrk atl rock native soil. Re lace rinks la Oesi n slarMares.
Rack flk0
Vench for Missing or
tlischerge movetl large mck (3g ID. Each) sa that rock is
A hom ontl. rack Trench is not full of rock. visiple aDOVe ee a of trench.
Pbe
p1uBB¢tl
Dipersion with Acwmulaletl setllmenl that
M Verrch setlkmin exceetls 2g%of Ne tlesi ntl m. PI cleanetllflushae.
Perlorallon Over tl3 of perloretions in Dipe are
M 6 to ee lu etl with tlebh6 an0 setlimenl. Clean of re IoW doraletl I
Ysual evltlence of water
eischarging al Wncenhatetl paints
Nol elorg trench (normal contlihon Is a
tlischergin "sheet OaW+'of water along trenchl. Trench must be retlesignetlororrepuil
g water Intent is to prevent eroson l0 51aMan]. Elevation of Ilp el Vench
M, 5 rl tlama e. shgultl De 0e same flat al all Dints.
water
Mows aul Maintenance person observes
IDp of water flowing out tluring any storm
"tllstebulor lev roan tlesgn storm or it is Fadllly must De reWill or retlesignetlt
"catch Wusing or appears llkelylD WUSe slantlaNS. Pipe lspmbabtyplugge0 or
M.5 basin tlama e. tlama etl and neetls re IaWment.
Receiving
area Water in receiving area Is causing Slabaize slope with grass or o1Der
oversalura or has polenlialolceusing vegetation, or rorkRWntligan is
M 5 tetl IantlslNe.
n you are unsure wh¢mer a problem
Comments:
Nev
A =Annual (Marco or April preleree)
M = Mwahly (see schatlule)
S = Afler major storms
39F5850 Page 13 of 22
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ATTACHYENT'8":IMINTENANCE pRWRNA
MaMeneme CBxfSMN CmvaYero SyYmm> (Plpm, Oltrli® erk Swale)
nNe
SYaMm
Frpuenry F®Nm Pmbbm CWNewwb tllMF for GMUINne me150auY EVa1
$WlmemB / rmWelee Saeimenl lBal eviceeea
M,S Plpes Debria 30%d Ne Eiemekr of Na pi PI tleeneedall aeeimmlenC EaNis.
Vepelaean Mel m]umelree Nve0ela0an bmavM SO wMrflwn lreNy
M V em nl otwbr Mro M1 I Mmu M1pi
DemepM, Prabctive meting is eampM, mal la
ruabe. Benl, ceueiYp more Nan 50%eMrrretion
waMO. ban rtdNe' Pipe ie ra iretlw
My eenl Nel ignifinntly impeex
Bea' lie., eeueama Ne wu wcbm
M >e of qpe oy more Men 20%f. Pip mpeiree areµaW.
o~mpirq d rare w>Y> ewe m
Area. rbppinpa eM MamMe. mm
b>Mn. un>IgnIM emamubflon d
rmmpmesYe meleeels eum as Remove wean aae aenaam eiapomdee
open yeas. Masnc, meMl, Imm a~a m.be eemabee M cBY w.Ya M.n.gemem
M.S U20m Tme060ebna per. Seem.
seeimam Mwmwbe aeeimem Melmmaes Diem oeareedev a.elmem am eam>x
M WIMw zo%dNeba eee malnmblmez BeagO.
vepemow (e.g., w.ey samba w
mginaq mal reeamarree w.YrlNn'>rmly Nrrmgn mlmm.cYny
v abase emmbdwlm nNOa nelMNm. vewlebm snouts be Mnabae.
Ema
eamege b
M sm Pme> cnwial see Pones cn«ulal.
ROtlr linlrq oul
d qem
mNainp (M Melnbnewb peram mlive
eB
mde soil tenmM Ne rmA I'nlnO Meplace r¢ka to eesgn alanGartl.
Borne See GtrJr Beeiiu cBeUJisl. Sm CelcM1 Bmiru UZWla1.
M.S Svzb> TmM1 fl Cebrie See eCOVe lw OilcBee See above M Di111ea.
$eeiment 6 VeOeretim may nee] b be reyenlee NNr
M Cebrf> See eMVeb Ohme>, tleenlrq.
gerab aWla aM maao entl mulm Mre
recs. Ma'mYin gnu MpM al a minimum
VeBeYlbn n% Gresa mverb epeme enU weeey or BircBee In bglabrtnwlerlmehWnl.
Orwvln0 or over0ronn wiN wWY Ramous wwtlY OrcxtR leccnlour, en0
M over0mwn vegebtion, reaeaE as nemsmry.
Eroinn
eemaab
M.5 su POMS CM1eWbt Sm Pmee CtbcWel.
Convem'un by Hpamide>pmM wiN MmWwlNf ane
Banswnx w mpuml Net sorb area M reaMree Conled
mmPetitb Swb Bas Ueen Yal In w gedeo ty CBy m mporl px[bm M ml ixtfiea
M >M, nMpib, MruEbery, e¢. Wwbn .
h wrvey may K rweeee N cM1eck graeee.
Ones nM robe In 1-5%renBe tl ponble.'
Sveb ewa WeW abMeinswW wAw veMVly 11 grass is bm Nan l%utAeNnlne may
8 rplUAirl ve Wrx.S pBlb~ttNR. Meeb MinaleMM.
Ilym nv.IWlBreplOdem eelsp, FAmm mnletl Me JUrBLtlm arts aYlar Ydmimlamieterca.
Gmmenls:Nu
A=Mnual (MamO er Ntll prNamB)
M=ManlBly lase xBNWq
s=A(ler mepr>Gma
3965850 Page 14 of 12
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ATTACHMENT "A" (CONTINUED)
Maintenance Checklist for FencinglShmbbery Screen/Other Lantlscaping
rainage
System
Frequency Feature J Problem Contlitions to check far Conditions that Should Exist
Missing or
broken
partts/tlead Any defect in the fence or screen Fence is mended or shrubs replaced to
M Caeneral shrubbe that ermits eas ent [o a facili . form a solid barrier [o ent .
Erosion has resulted in an opening
under a fence that allows entry by Replace soil under fence so that no
M, S Erosion peo le or ets. openin exceeds 4 inches in hei ht.
Shrubbery is trimmed and weeded to
Unruly Shrubbery is growing out of control provide appealing aesthetics. Do not
M ve elation or is infested with weeds. use chemicals to control weeds.
Damaged Posts out of plumb more than 6 Posts plumb to within 11l2 inches of
A parts inches. plumb.
Top rail free of bends greater than 1
A To rails bent more than 6 inches. inch.
Any part of fence (including posts,
tap rails, and fabric) more than 1 Fence is aligned and meets design
A foot out of desi n ali nments. standards.
A Missin or loose tension wire. Tension wire in place and holdin fabric.
Missing or loose barbed wire that
is sagging more than 2112 inches Barbed wire in place with less than 3l4
q between osts. inch sa between posts.
Extension arm missing, broken, or
ben[ out of shape more than 11/2 Extension arm in place with no bentls
q inches. tar er than 3/4 inch.
Deteriorated
paint or Part or parts that have a rusting or
protective scaling condition that has affectetl Structurally atlequate posts or parts with
A cootie structural ode uac . a uniform protective ceatln .
pemngs in a nc are suc 1 a[
Openings in an 8inch~iameter ball could flt
M fabric through. No openings in fabric.
If you are unsure whether a problem exists, please contact the Jurisdiction and ask for technical assistance.
Comments:
A =Annual (March or April prefered)
M =Monthly (see schedule)
S =After major stones
3965850 Page 15 0( 22
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Maintenance Checklist for Gates
ATTACHMENT "A" (CONTINUED)
rainage
System
Frequency Feature J Problem Conditions to check for Conditions that Should Exist
Pond has a functioning gate to allow
entry of people and maintenance
equipment such as mowers and
Damaged or backhoes. If a lock is used, make sure
missing Gale is broken, jammed, or City Stormwater Section held stall have
M General com onents missin a ke .
Broken or missing hinges such
that gale cannot be easily openetl
and closetl by a maintenance Hinges intact and tubed. Gate is
M erson. workin free) .
Gate is out of plumb more than 6
inches and more than 1 foot out of
A desi n ali nment. Gate is ali ned and vertical.
Missing stretcher bar, stretcher
A bands, and ties. Stretcher bar, bands ,and ties in lace.
If you are unsure whether a problem exists, please contact [he Jurisdiction and ask for technical assistance.
Comments:
A =Annual (March or April prefered)
M =Monthly (see schedule)
S = Aker major stones
3965858 Page 16 of 22
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[iY Or YEIJ9
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ATTACHMENT"A"(CONTINUED)
Maintenance Checklist for Grounds (Landscaping)
(sWdure That controls rate al which water exits tarJlhy)
reinage
System
Frequenq Feature J Problem Conditions to check for Contlitions that Shall Ezist
Weeds Weeds growing in mare than 20 % of the Weetls present in less than 5%of the
M General (nonpoisionous) landscapetl area (trees and shrubs only). landscaped area.
Any presence of poision ivy or other No poisionous vegetation or insect
M Safety hazartl poisionous vegetation or insect nests. nests present in the landscaped area.
,S Trash or litter See Ponds Checklist. See Pontls Checklist.
Causes o(erosion are identified and
steps taken to slowdown/spread out
Erosion of ground Nolicable rills are seen in landscaped the water. Erotletl areas are filled.
,S surtace areas. contoured, ana saedetl.
Limbs or parts of trees or shmibs that are Trim trees/shrubs to restore shape.
Trees antl split or broken which aftecl more than 25 % Replace lreeslshrubs with severe
shrubs Damage of the total loilage o(the tree or shrub. damage.
Replant tree, inspecting for injuryto
Trees or shrubs that have been blown stem or roots. Replace if sevedy
M down or knocked over. tlamaged.
Trees or shrubs whitJl en; not atlequately Place stakes and rubber-coatetl ties
supported or are leaning aver, causing around young trees/shrubs for
ezposure o/the teals. supPOd.
If you are unsure whether a problem exists, please ceMacl the Judstliction and ask
Comments:
A =Annual (March or Apnl prefered)
M =Monthly (see schedule)
S =After major slonns
3965850 Page 17 of 22
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ATTACHMENT"A"(CONTINUED)
Maintenance Checklist for Access RoadslEasemenls
Drainage
System
Frequenq Feature J Problem CondRions to check (or Contlitions that Shall Ezist
If ponds or other tlrainage system Determine whether an easement(
features needing maintenance by drainage feature ezists. If yes, obtain City
motorized equipment are present, either permits and construct gravel (or equal)
No access an access road or axes from public access road- If not, repod lack of
One time General road ezisls streets is required. easment to City attention.
Blocked Debris which mould damage vehicle tires Roadway bee of debris which could
roadway (glass or metap. damage tires.
Any obstructions which reduce clearance
above road sudace to less than 14 feel. Roatlway overhead clear to t4 feet high.
Any obstructions restricting the access to Obstruction removed to allow at least a
less than 15 feet witlth. i 6 foot wide access.
When any surface defect exceeds 6 Road surface uniformly smooth with no
Settlement, inches in depth and 6 square feel in evidence of settlement, potholes, mush
potholes, area. In general, any sudace defect spots, or ruts. Occasionally application of
Roatl mush spots, which hintlers or prevents maintenance atlditional gravel or pit run rock will be
,S surtax ruts access needed.
Remove woody growth at eady stage to
Vegetation prevent vehicular blockage. Cut back
Shoulders in roatl Wootly growth that ccultl block vehicular weeds if they begin to encroach on road
M and ditches sudace axes Excessive weetl cover. surtace.
Erosion within 1 foot o(the roadway
Erosion more than 8 inches wide antl 6 inches Shoultler free of erosion and matching
M,S damage deep- the surrounding road.
If you are unsure whether a problem exists, please contact the Juristlidion and ask for technical
Comments:
A =Annual (March or April pretend)
M =Monthly (see schedule)
S = ARer major storms
3965850 Page 18 of 12
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VORTECHSr' STORMWATER TREATMENT SYSTEM
MAINTENANCE
The Vortechs System should he inspected at regular intervals and maintainetl when necessary
to ensure optimum performance. The rate at which the System collects pollutants will depend
more heavily on site activities than the size of the unit, e.g., unstable sails or heavy winter
sanding will cause the grit chamber to fll more quickly but regular sweeping will slow
accumulation.
Inspection
Inspection is~ the key [o effective maintenance and is easily performed. Vortechnics
recommends ongoing quarterly inspections of [he accumulated sediment. Pollutant deposition
and transport may vary from year to year and quarterly inspections will help insure that Systems
are cleaned out at the appropriate time. Inspections should be performed more often in the
winter months in climates where sanding operations may lead to rapid accumulations, or in
equipment washdown areas. It is very useful to keep a record of each inspectlon. A simple form
for doing so is provided.
The Vortechs System should be cleaned when inspection reveals that the sediment depth has
accumulated [o within six inches of the dry-weather water surface elevation. This determination
can be made by taking 2 measurements with a stadia rod or similar measuring tlevice; one
measurement from the manhole opening to the top of the sediment pile and the other from the
manhole opening to the water surface. The System should be cleaned out if the tliHerence
between the two measurements is six inches or less. Nate: to avoid underestimating the
volume of sediment in the chamber, the measuring device must be lowered to [he top of the
sediment pile carefully. Finer, silty particles at the top of the pile typically offer less resistance to
the end of the rod than larger particles toward the boHom of the pile.
Cleaninn
Maintaining the Vortechs System is easiest when there is no flow entering the System. For [his
reason, it is a good idea to schedule the cleanout during dry weather. Cleanout of the Vortechs
System with a vacuum truck is generally the most effective and convenient method of
ezcava[ing pollutants from the System. If such a truck is not available, a "clamshell" grab may
be used, but R is difficult to remove all accumulated pollutants with such devices.
In Vortechs installafions where the risk of large petroleum spills Is small, liquid contaminants
may not accumulate as quickly as sediment. However, an oil or gasoline spill should be
cleaned out immediately. Motor oil and other hydrocarbons that accumulate on a more routine
basis should be removed when an appreciable layer has been captured. To remove these
pollutants, it may be preferable to use adsorbent pads since they are usually cheaper [o dispose
of than [he oil water emulsion that may be created by vacuuming [he oily layer. Trash can be
netted out if you wish to separate it from the other pollutants.
Accumulated sediment is typically evacuated through the manhole over [he grit chamber.
Simply remove the cover and insert the vacuum hose into the grit chamber. As water is
evacuated, the water level outside of the grit chamber will drop to the same level as [he crest of
the lower aperture of the grit chamber. It will not drop below this level due to the fact that the
bottom and sides of the gdt chamber are sealed to the tank Hoor and walls. This "Water Lock"
3965850 Page 19 of 22
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CITY Or YELM
l~~~l,
VORTECHS'" STORMWATER TREATMENT SYSTEM
feature prevents water from migrating into the grit chamber, exposing the bottom of the baffle
vaall. Floating pollutants will decant into the grit chamber as the water level [here is drawn
down. This allows most Floating material to be withdrawn from the same access point above [he
gdt chamber.
If maintenance is not performed as recommended, sediment may accumulate outside the grit
chamber. If this is the case, it may be necessary to pump out all chambers. It is a good idea to
check for accumulation in all chambers during each maintenance event to prevent sediment
build up there.
Manhole covers should be securely seated following cleaning activities, to ensure that surtace
runoff does not leak into the unit from above.
3965850 Page 20 of 12
~~,i ~vrzon/ 09 nr, nn n~~eem..n~
ii, ,m„ c~~~,ir ~.n~ngm„
CIiY OF YELM
~~ ~~~~~ ~~~ ~~~~ ~~~~ ~~I~ ~~~~ ~~~ ~~~~ ~~~~ ~~~~~ ~~~~ ~~~ I~~~ ~~~~~ ~,~~~ ~~ ~~i~~ III ~~
Vortechs° System
Vortechs® System Inspection & Maintenance Log
Model: Location:
Water Floatahle Maintenance
Date Depth to Layer Maimm~ance Comments
SeBfinenlr Thickness z PeAortnetl Pervonn¢I
1. TM wafer depth Ip setlimenf is delerminetl try taking My meawremenls with a stadia red one measurement hom the manhole
opening fo the top of lha eetlimenl pile ark the o1Mr kam the maM¢le opmirp to Ina wafer sudarc. YMen the Oleerenre beN.een
the nw measurements is six inMes ar less, the SYSIem ahouro be tleened out.
2 Fa optimum performance. the System should be tleaned out when the Apaling hytlrawlbon layer accumulates Io an appreaable
fhirkrrees. In the event o/a spill, the System shook be dearred immetliakty.
Sdmpl¢ VortecM1S° System Technical Oeslpn Manual
3965850
'ISrzoor oe ac qn pg~aefne„I Page 21 of 22
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n~t°rncumu:n~r ^R^
POLLGTION SOURCI?CONTROL PROGRAM
Pollution source comrols are actions taken be a person or business to reduce the amount
of pollution reaching surtnee water and groundwater. A conscious control program is of
significant importance to the YELM C0~4MUN1"fY SCIi00LS, as runoff will be
directed to a constructed ~cetland and inliltration dlsposul facility that will ultimately
introduce the collected runoff in to the shallow groundwater- system. Many pollutants
generated ou commercial sites cannot be removed from the runoff by conventional
trcauncnt and may eventually enter the shallow groundwater system. Hence, it is of great
importance to limit the development of these pollutants in the generated stormwater
runoft~.
'the subject controls are also known as "L3est Management Practices" (BMP), include:
Minimizing vegetatiotr/groundcoverdisturbance.
• Stabilizing existing exposed soil surfaces through fortilizing and seeding, and
mulching with chopped hay during the wet season Q S October through 15
March).
• Maintaining roof sldcwalk and paved drivewa}' areas fi'ec of debris accumulation;
refi~aining from using soaps and deteegents in s+~ashing these exterior surfaces; and
carefully controlling activities in these areas so as to prcdude hazardous materials
spills (i.c. chemical storage. vehicle maintenance, etc.).
• Substitute non-toxic products for toxic materials; recycle used oil and antifreeze
immcdiatcly.
• Refrain from storing hazardous or toxic chemicals or other substances. Where it
is imperative to store such materials, enclose them in a lockable cabinet.
• Limit the use of fertilizers and pesticides to the precise amount recommended by
professionals working the area.
Pollution source controls arc needed because of the contamination found in runoff from
commercial areas and the effect of this contamination on aquatic life and human health.
Research on urban runoff in the Puget Sound area and elsewhere has found oil and
grease, nutrients, organic substances, toxic metals, bacteria, viruses, and sediments at
unacceptable levels. Effects oC contaminated runoff include closure of shellfish
harvesting areas and swimming areas. mortality of young fish and other aquatic
organisms, tumors on fish and impairment of tish reproduction.
3965850 Page 22 of 22
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