HomeMy WebLinkAbout03333 - Technical Information Report - Stormwater Maintenance Plan ■� �■
� �
� �
. _
T A C � M A • S E A T T L E
�.
Stormwater .
Maintenance P/an
PREPA RED FOR ;
� JDA Group, LLC
95 South Tobin Street, Suite 201
� Renton, WA 98055-1324
PROJECT.'
Rainier Station
City of Renton, Washington
� Z03615.10 '
� PREPARED BY.•
Glenn C. Hume, P.E.
� Project Engineer
�
� REVIEWED BY.•
� ]. Matthew Weber, P.E.
Principal
i
April 2006
• uo � �os �
i
Civil Engineers • Structural Engineers • Landscape Architects • Communrty Planners • Land Surveyors • Neighbors
�
Stormwater
Maintenance P/an
PREPARED FOR :
JDA Group, LLC
95 South Tobin Street, Suite 201
,��E�� Renton, WA 98055-1324
A� �
oF w �,c�`"�
�,�w -•�
'� �,�' .� ' , c ;�' ' PROJECT.•
,
o ��858� T��-�; Rainier Station
�, Grsr��°G�; ;:. City of Renton, Washington
`�I��� ��' 203615.10
� ���4�
DCPIRES: 11 f71 l�^ s
I hereby state that this Stormwater PREPARED BY.•
Maintenance Plan for Rainier Station, has
been prepared by me or under my Glenn C. Hume, P.E.
supervision and meets the standard of Project Engineer
care and expertise that is usual and
customary in this community for
professional engineers. I understand that
the City of Renton does not and will not
assume liability for the sufficiency, REVIEWED BY.•
suitability, or performance of drainage
facilities qreoared bv me. �. Matthew Weber, P.E.
Principal
April 2006
TABLE OF CONTENTS
SECTION PAGE
1.0 Introduction ............................................................................................................1
2.0 Responsibility ..........................................................................................................1
3.0 Schedule.................................................................................................................1
4.0 Vegetation Management Plan....................................................................................l
5.0 Source Control.........................................................................................................l
6.0 Instructions for Person Maintaining Stormwater System ..............................................2
7.0 Conclusion ..............................................................................................................2
AttachmentA —Maintenance Schedule
Attachment B—Pollution Prevention Plan
1.0 INTRODUCTION
This report presents a maintenance program that meets the requirements of the 1990
King County Surface Water Design Manual. The private stormwater control facilities
associated with the 6`h Street Short plat include a wet �ault, catch basins and conveyance
pipes.
It is vitally important that these facilities are maintained in a timely and conscientious
manner to ensure the facilities operate as intended. If the collection, conveyance, or
treatment facilities are not adequately inspected and maintained periodically, it could
lead to surcharging of the stormwater conveyance network, local flooding, increased
erosion potential and p�ssible groundwater contamination. Siltation, debris or lack of
general maintenance can reduce the performance capabilities of the facilities.
2.0 RESPONSIBILITY
A portion of the stormwater facilities associated with the Rainier Station project are
shared with the 6th Street Short plat to the west. This portion of the proposed storm
water systems are private, and the Homeowner's Association and the commercial
property owner are jointly responsible for maintenance of the proposed facilities.
Maintenance agreement and easements are required between the two sets of"owners".
The remainder of the Rainier Station stormwater management system is the sole
responsibility of the site owner.
3.0 SCHEDULE
Maintenance of the stormwater facilities shall follow the schedule as specified in the
DDECM. Additional maintenance may be required to respond to unusual storm events or
reduced performance of the treatment. A copy of the recommended maintenance
schedule is included in Attachment A and may be photocopied and used as inspection
records.
4.O VEGETATION MANAGEMENT PLAN
The attached maintenance schedule provides guidance on vegetation control and
management. Irrigation and other maintenance as necessary shall be provided to ensure
that vegetation remains viable and that a hardy root structure forms in the first year.
Vegetation planting shall be provided as described in the construction documents.
5.O SOURCE CONTROL
Wastes for this development will consist of oil, grease (and other contaminants from
cars), sediment, and small quantities of fertilizers and pesticides. The following actions
should be taken so that pollution generated on-site will be minimized:
1. Vehicle maintenance, washing, mixing of pesticides, or any other activities that
would contribute high concentrations of pollution to the stormwater conveyance
system should not be performed in the parking areas.
2. Vegetation along the road edges including cut and fill slopes shall be maintained to
prevent erosion of the banks.
1 a� � �
_
3. Street sweeping shall be performed to reduce the quantity of sediment being
transported to the storm drainage system.
4. The stormwater facilities shall be inspected and maintained per the checklists and
BMPs in Attachment A and Attachment B.
(See Attachment B for source control BMPs from the Sto�mwate�Management Manual for
the Puget Sound Department of Eco%gy, February 1992.) ',
6.O INSTRUCTIONS F�R PERSON MAINTAINING STORMWATER SYSTEM �
Attachment A contains a stormwater facility maintenance schedule. Plan to complete a
checklist for all system components per the following schedule:
1. Monthly from November through April;
� 2. Once in late summer (preferably September); and
3. After any major storm event (items marked "S" only).
Using photocopies of the attached pages, check off the problems that are noted each
time the item is inspected. Document comments on problems found and corrective
action taken. The inspection checklist sheets should be kept on file and presented to
Renton officials upon request. Use the suggested inspection frequency at the left of each
item as an inspection guide (see Attachment A).
7.0 CONCLUSION
This maintenance plan is developed for the stormwater facilities associated with the
Rainier Station project. The maintenance plan has been prepared within the guidelines
of the 1990 King County Surface Wate�Design Manua/and the 1992 Department of
Ecology Stormwater Management Manual fo�the Puget Sound Basin. If this plan is
properly implemented, the Owner can expect the stormwater conveyance system to
function as designed.
This analysis is based on data and records supplied to, or obtained by, AHBL. These documents are
referenced within the text of the analysis. The analysis has been prepared utilizing procedures and
practices within the standard accepted practices of the industry.
AHBL, Inc.
�'C17���%'�,��'2,
11�'
Glenn C. Hume, P.E.
Project Engineer
GCH/sca
Apri I 2006
K:�Civil\Yr_2003\203615�SfORM�COMMERCIAL\MAINT�615-Maintenance Plan(CC)-wp.doc
203615Maintenance Plan(CC)060417.doc
2 �a � O
Attachment A
Maintenance Schedule
Maintenance Checklist for Wet Vault
Drainage Conditions That Should
Frequency System ✓ Problem Conditians to Check For Exist
Feature
M General Trash/Debris Trash and debris accumulated in Remove trash and debris
Accumulation vault,pipe or inleVouUet(includes from vault.
floatables and non-iloatables).
M General Sediment Accumulation Sediment accumulation in vault Remove sediment from
in Vault bottom exceeds the depth ot the vault.
sedime�t zone plus 6-inches.
A General Damaged Pipes InleUoutlet piping damaged or Pipe repaired and/or
broken and in need of repair. replaced.
A General Access Cover Cover cannot be opened or Pipe repaired or replaced
Damaged/Not Working removed,especially by one person. to proper working
specifications.
M General Ventilation Ventilation area blocked or Blocking material removed
plugged. or cleared from ventilation
area. A specified%of the
vault surface area must
provide ventilation to the
vault interior(see design
speciiications).
A Vault Damage-Includes Maintenance/inspection personnel Vault replaced or repairs
Structure Cracks in Walls Bottom, determine that the vault is not made so that vault meets
Damage to Frame structurally sound. design specifications and
and.�or Top Slab ,is structurally sound.
A Vault Damage-Includes Cracks wider than 1!2-inch at the Vault repaired so that no
Structure Cracks in Walls Bottom, joint oi any inlet/outlet pipe or cracks exist wider than
Damage to Frame evidence of soil particles entering 1!4-inch at the joint of ihe
and/or Top Slab through the cracks. inlet/outlet pipe.
A Vault Bafiles Baffles corroding,cracking,warping BaHles repaired or
Struclure and/or showing signs of failure as replaced to specifications.
determined by
maintenance/inspection staff.
A Access Damage Ladder is corroded or deteriorated, Ladder replaced or
Ladder not functioning property,not repaired to specifications,
attached to structure wall,missing and is safe to use as
rungs,has cracks and/or determined by inspection
misaligned. Coniined space personnel. Replace sign
warning sign missing. warning of contined space
entry requiremenfs.
If you are unsure whether a problem exists, please contact a Professional Engineer.
Comments:
��
(M) Monthly from November through April.
(A) Once in late summer (preferable September)
(S) After any major storm (use 1-inch in 24 hours as a guideline).
Maintenance Checklist for Control Structure-'Flow Restrictor
(Structure that controls rate at which water exits facility)
Frequency Drainage / Problem Conditions To Check For Conditions That
Systems r Should Exist
Feature
M Structure Trash&debns Distance between debris buildup All trash and debris
(indudes and bottom oi orifice plate is less removed.
sediment) than 1-1/2 feet.
A Structural Structures are not securely Slructure securely
damage attached to manhole wall and attached to wall
outlet pipe structure should and outlet pipe.
support at least 1,000 pounds of
u or down ressure.
A Structure is not in upright position Structure in correct
allow u to 1�%from lumb. sition.
A Connections to outlet pipe are not Connections to
watertight and show signs of rust. outiet pipe are
. watertight;
structure repaired
or replaced and
works as desi ned.
M Any holes—other than designed Siructure has no
holes—in the structure. holes other than
desi ned holes.
M,S Cleanout Damaged or Cleanout gate is not watertight or Gate is watertight
gate missing missing. and works as
desi ned.
A Gate cannot be moved up and Gate moves up and
down by one maintenance person. down easily and is
waterti ht.
M,S Chain leading to gate is missing or Chain is in place
damaged. and works as
desi ned.
A Gate is rusted over 50%of its Gate is repaired or
surtace area. replaced to meet
desi n standards.
M,S Obsiructions Any trash,debris,sediment,or Piate is free of all
vegetation blocking the plate. obstructions and
works as desi ned.
M,S Overflow Obstructions Any trash or debris blocking(or Pipe is free of all
pipe having the potential of blocking) obstructions and
the overflow i e. works as desi ned.
If you are unsure whether a problem exists, please contact a Professional Engineer.
Comments:
Key:
A =Annual (March or April preferred)
M = Monthly(see schedule)
S =After major storms (use 1-inch in 24 hours as a guideline)
Maintenance Checklist for Catch Basins and Inlets
Frequency Drainage / Problem Conditions To Check For Conditions That
Systems r Should Exist
Feature
M,S General Trash,debris and Trash or debris in front ot ihe catch No trash or debris
sediment in or on basin opening is blocking capacity located immediately
basin by more than 10%. in tront oi catch basin
opening. Grate is
kept clean and allows
water to enter.
M Sediment or debris(in ihe basin) No sediment or debris
that exceeds 1/3 the depth from the in ihe catch basin.
bottom oi the basin to invert of the Catch basin is dug
lowesl i e into or out of the basin. out and clean.
M,S Trash or debris in any inlet or pipe Inlet and outlet pipes
blockin more than 1/3 of its hei ht. free of trash or debris.
M Structural damage Corner oi frame extends more than Frame is even with
to trame and/or 3/4 inch past curb face into the curb.
� to slab street ii a licable .
M Top slab has holes larger than 2 Top slab is free of
square inches or cracks wider than holes and cracks.
t/4 inch(intent is to make sure all
material is runnin into the basin.
M Frame not sitting flush on top slab, Frame is sitting flush
i.e.,separation of more than 3/4 on top slab.
inch of the irame irom the to slab.
A Cracks in basin Cracks wider than 1/2 inch and Basin replaced or
walis/bottom longer than 3 feet,any evidence of repaired to design
soil particles entering catch basin standards. Contact a
ihrough cracks,or maintenance protessional engineer
person judges that structure is for evaluation.
unsound.
A Cracks wider than 1!2 inch and No cracks more than
longer than 1 foot at the joint of any 114 inch wide at the
inleVoutlet pipe or any evidence oi joint of inleVoutlet
soil particles entering catch basin pipe. Contact a
through cracks. professional engineer
tor evaluation.
A SettlemenU Basin has settled more than t inch Basin replaced or
misalignment or has rotated more than 2 inches repaired to design
out of alignment. standards. Contact a
professional engineer
for evaluation.
M,S Fire hazard or Presence of chemicals such as No color,odor,or
other pollution natural gas,oil,and gasoline. sludge. Basin is dug
Obnoxious color,odor,or sludge out and clean.
� noted.
M,S Outlet pipe is Vegetation or roots growing in inleV No vegetation or root
clogged with outlet pipe joints that is more than growth present.
vegetation six inches tall and less than six
inches a art.
If you are unsure whether a problem exists, please contact a Professional Engineer.
Comments:
Kev:
A=Annual (March or April preferred)
M = Monthly(see schedule)
S =After major storms (use 1-inch in 24 hours as a guideline)
Maintenance Checklist for Fencing/Shrubbery Screen/Other Landscaping
Frequency Drainage / Problem Conditions To Check For Conditions That
Systems r Should Exist
Feature
M General Missing or Any deiect in the fence or screen that Fence is mended
broken permits easy eniry to a facility. or shrubs replaced
partsldead to form a solid
shrubbe barrier to ent .
M,S Erosion Erosion has resulted in an opening under Replace soil under
a fence that allows entry by people or fence so that no
pets. opening exceeds 4
inches in hei ht.
M Unruly Shrubbery is growing out of controi or is Shrubbery is
vegetation infested with weeds. trimmed and
weeded to provide
appealing
- aesthetics. Do not
use chemicals to
control weeds.
A Wire fences Damaged parts Posts out of plumb more than 6 inches. Posts plumb to
within 1-1/2 inches
' ot lumb.
A Top rails bent more than 6 inches. Top rail free of
bends greater ihan
1 inch.
A Any part of ience(inciuding posts,top Fence is aligned
rails,and iabric)more than 1 foot out of and meets design
desi n ali nment. standards.
A Missing or loose tension wire. Tension wire in
place and holding
fabnc.
A Missing or loose barbed wire that is Barbed wire in
sagging more than 2-1/2 inches between place with less than
posts. 3/4-inch sag
between osts.
- A Extension arm missing,broken,or bent Extension arm in
out of shape more than 1-1/2 inches. place with no
bends larger than
3�4 inch.
A Deteriorated Part or parts that have a rusting or scaling Structurally
paint or condition that has aftected structural adequate posts or
protective adequacy. parts with a uniform
coatin rotective coatin .
M Openings in Openings in iabric are such that an 8-inch No openings in
iabric diameter bail could fit through. fabric.
If you are unsure whether a problem exists, please contact a Professional Engineer.
Comments:
Key:
A=Annual (March or April preferred)
M = Monthly(see schedule)
S =After major storms (use 1-inch in 24 hours as a guideline)
i�
Maintenance Checklist for Conveyance Systems (Pipes, Ditches and Swales)
Frequency Drainage ✓ Problem Conditions To Check For Conditions That
Systems Should Exist
Feature
M, S Pipes Sediment 8 debris Accum�lated sediment that Pipe cleaned of
exceeds 20%of the diameter of all sediment and
the i e. debris.
M Vegetation Vegetation that reduces free All vegetation
movement of water through pipes. removed so
water flows
freely through
i es.
A Damaged(rusted, Protective coating is damaged; Pipe repaired or
bent,or crushed) rust is causing more than 50% replaced.
deterioration to an art of i e.
M Any dent that significantly impedes Pipe repaired or
flow(i.e.,decreases the cross- replaced.
section area of pipe by more than
20%)
M Pipe has major cracks or tears Pipe repaired or
allowing groundwater leakage. replaced.
M,S Open Trash 8 debris Dumping ot yard wastes such as Remove trash
ditches grass clippings and branches into and debris and
basi�. Unsightly accumulation of dispose as
nondegradable materials such as prescribed by
glass,plastic,metal,toam and the County.
coated a er.
M Sediment buildup Accumulated sediment that Ditch cleaned of
exceeds 20%of the design depth. all sediment and
debris so that it
matches desi n.
A Vegetation Vegetation(e.g.,weedy shrubs or Water flows
sapiings)that reduces free freely through
movemenis of water through ditches. Grassy
ditches. vegetation to be
left alone.
M Erosion damage to See Ponds Checklist. See Ponds
� slopes Checklist.
A Rock lining out of place Maintenance person can see Replace rocks to
or missing(if native soil beneath ihe rock lining. design standard.
a licable
Varies Catch See Catch Basins Checklisl. See Catch
basins Basins
Checklist.
M,S Swales Trash 8 debris See above for Ditches. See above for
Ditches.
M Sediment buildup See above for Ditches. Vegetation may
need ta be
replanted after
cleanin .
M Vegetation not growing Grass cover is sparse and seedy Aerate soils and
or overgrown or areas are overgrown with woody reseed and
vegetation. mulch bare
areas. Maintain
grass heighl at a
minimum of 6
inches tor best
stormwater
treatment.
Remove woody
growlh,
recontour,and
reseed as
necessa� .
M,S Erosion damage to See Ponds Checklist. See Ponds
slopes Checklist.
M Conversion by Swale has been filed in or blocked if possible,
homeowner to by shed,woodpile,shrubbery,etc. speak with
incompatible use homeowner and
request that
swale area be
restored.
Contact the
County to report
problem if not
rectitied
voluntaril .
Frequency Drainage ✓ Problem Conditions To Check For Conditions That
Systems Should Exist
Feature
A Swale does not drain W ater stands in swale or ilow A survey may be
velocity is very slow. Stagnation needed to check
occurs. grades. Grades
need to be in 1-
5%range if
possible. H
grade is less �
than 1°/
underdrains may
need to be
installed.
If you are unsure whether a problem exists, please contact a Professional Engineer.
Comments:
Kev:
A=Annual (March or April preferred)
M - Monthly (see schedule)
S=After major storms (use 1-inch in 24 hours as a guideline)
i
, ..�
�
1
�
Attachment B
Pollution Prevention Plan
STORlSFIJ1TLR !s7►ti1�GLKENT MaNUAL FOR SHE PUGET SOUND BASIN
Ztl-�.i L/Q' 61.�O L1��GDfCY.ilIIS. C1.LJUfII! TLANS
Ownez• of faciliti�s enqaged in storinq, proce�siaq, or refininq oil and/or oil
pzoducts -ar� r�quizsd by P�dtral Lau to ha�• a Spill Pzsv�ntion and Control �lan
(STCC). Ovners oF bu�ia��i�s that produc• Dangerous F7ast�s azs z�qvir�d by State
Lav to !ui►t a ■pill cl�anvp plan. Th�s� bu�inesat• shonld al�c zetsr to R.7 is
Cl�apt�s 2 V-S.
T!u bu�in���es and public aqenci�s id�ntified in Chapters IV-2 and IV-3 of thi�
�a�wal that are rfquir�d to nav� an Eo�rqency Spill Cls�nup Plan ihall follov these
.Qsn�ral quid�line■ in its pr�paration.
l. ?1►� fir�t part of th� plaa shall contain s da�eriptioa of th• faeilitr
ineludinq the owner'• naa� �nd addr���, the nature of tl�e taeility acti�itY
and th� qeasral typ�• o[ chmical• u�ed ia th� faeility.
2. T1» plaa shall contain a sit� plan ■howinq ths location of ■toraq� ar�aa !or
chsaical�, tAe loeatioas of •tor� drain�. anG th� dir�etion o! •lopes tovards
tho�e drain�, and the location and dascription of any de•iee• to st�p �pi�l•
fraa l�aving the •ite such as posiLiv� control valvsa.
3. Sh� plan shall de�csibe notitication proc�dur�• to be used in the e��nt ot a
spill, �ueb a� key personnel, and aqcncies sueh as Ecoloqy and ih� local S�r
Anthority.
4. T2�s plan ■hall provide ir+struetiona regardinq cleanup procedures.
� S. Tt+� ovner shall bavs a desiqnat�d person with overall spill respoa�e cl�anup
� =uponiibility.
� 6. ltsy per�onnel �hall be trained in tAe u�e of thia plan. All emplorees ihou2d
� lfare Dasic knowl�dqs of �pill control proc�dures.
7. H �usna.ry of th� plan slsali D� xrittan and po�tcd at approprlat• points in the
_ buildinq, identifyinq tht �pill cl�anup coordinstors, loe�tion of cl�anup
kiti, and phon� nusibsrs of regulatary wqencies to b� contact*d in tM r��nt of
a �pill_
a. Cleaaup o! �pilli •ha21 beqin faroediately. 1�o emulsifier or di�p�z�ant •ball
be nsed.
9. In fu�linq ueas: absorbeat rhould be packayed in seall baqa for �a�y us• and
s�all dzums •hould b� arailabl� Zor •torsq� oi absorbeni and/or u��d
- ab�orbsnt.
10. ]lbwrnent �atsrial ahall aot De ws�hed dwn the floor drain or �torm s�wr.
11. Ltifsqerscy spill eontair�nt �nd cleanup kit(�) •hall bs locat�d at tht
taeility site. Ths cont�nts of the kit shall b� approprlaie to tM ty� and
quaatiti�s of ch�aieal liquid■ stored at th� facility. Tht kit �iqb� eontain
appropriately lined dru�s, sb�ozbent padi, and qzanular or powder�d �at�ri�l•
foz nsutralizfnq acid• or alkaline 2iquids. Kits �hould be dtployed in a
�anner tnat allovs zapid aec��s and use by amployeea. This plan ahall De
vpd�ted reg+slarly.
22. Ecoloqy •nd tbe local S�ws J►uthority shall be notitied� inroediataly i! th�
�pill ssy reaeh ■anitary or storu sewers, or surfacs water.
I V-4-21 FESRUl►RY,
STOR!liP11SER lSJ1Nl►GSKENT 1WtU71L FOR THE PUGET SOUND B�SIN
Iti'4.! E/P S1.f0 VLGLTJ►TION li71tD►GD�]]ITJI2fTEGR7►SED PESS� lU1N]1GE1mTS �
21ro �sry difier�at tpp�s of �eq�tatton management are used by businesser. The liz�t
�yp� o! �snaqm�nt i• nsc��iazp fot �u�in�sie� such a• publie and pri�at• utilitiei.
?l�ic ne�d i• to niniais� ths yrovtA of ��g�tation in unde�irabls loeatfoas •uch aa
ntility eorridora. OtAer bn�ia�sse�, sueh a• publie and priv�t• golt cour�es and
parks nNd to �ansq� d��irabl• �eq�tation for lu:uriant q:owtb and b�auty. Kany
bu�ia����� luv� at lta�t a eiaiisal a�x�at o! landacapinq around tAsis buildinq t!►at
tlNY wi�h ta �airtain. .
Zn �hort, on� typ� ot bu�ine�• vant• to oiniaiss ths preience o! v�qetation vhere
the other visA�• to euiais� it. Hotd types ot Du�in�sse�� wDetber usinq lurbicid�s
to b� rid o! undesirsbls ��q�tatioa, pesticide• to r�duc• pe�t inle�tation� or
i�rtilis�rs to proovt• �eqetati.� qzowth n�ed to implenwnt th�se practic�i in aa
3nte11ie�nL, en�irorwatallY •onad iasdion.
8R71ClICis tOA tUSZHtSSTS iRSRI1IG ?O PROMOTE PSAlIS GROi1T�t
sNdis�q and Plantinq EKP•
�u�inss��• who vi�h to u�e teoporary or permaaent scedinq, or vho intend to p�ant
��tatioa �hould zef�r to th• lolloving B}�s found in Volune II, Ero�ion and
SadiaMat Control:
S!V L1.10 Trsporary Ss�dis�q
Dl�l Z1.15 Mulchinq and Ttattinq
i!Q =1.�0 Clear Yla�ti� Corcrinq
�t4 i1.35 Msoan�nt S��dinq and Plantinq
�T S1.<0 Sodding
Tbei� �i proiide iafoznation on qzao ai�cturts, tmporarp and peroanent seedinq,
�iat�nanea of a r�e�atlY plant�d ar�� and fertilizer applieation rat��. • �
IIITLGR7►'!W YEST !!1►NJ►GlXENT
I�tt�qrat�d P�st Nanaq�ment (IPM) is s lonq-tess, ecoloqically ba��d •y�tss approaeh
to controlling p��t papulwtions tbat ntilize� a aeads a�aeisment bas�d on deeision-
�akiaq eriteria. IpM aaici�ise� relianc� on �atural pe�t eontrols. ZPM ha• tvo
luadaasnt�l aias. She Sirst i• to •t�ar p�atieids2 u�e �vay fra� pzophrlaetie,
atoad •pecirua n�• twards optiais�d ��l�ctirt u��, asinq th� vazious IpM ec�pon�nts
to quid� d�ci�ion-aakinq and achir� an seonaaicslly ju�tifiabl• incoo�. ?A� •scond
t� to r�eoqnist that tAe non-�acoru,ric conr�qu�nees o! pe�t eontrol (ar►d noe ju�t
p��tieid� uat) �ay b� ha�stul to the �o.iron�nt, and ■o p�stieid� input• ■Aould b�
s�ducwd and natural controls �sxiais�d in ord�s to rinisize the cn�ir��ssntal side
' �f1�ct■ (3).
Int�qrat�d eontrol i• a peit �anagment •yste� thst utili:e• all suitaDl� t�chaiques
eitb�r to reduee pe�t popvlations and eaintain thm at levela D�low tho�e cauriag
•eonouic injury, or to �o eanipulat� tbe populations that they are prev�nt�d fros
ea��inq wcb injury.
• 'A/�M�O�Y�AIT�'ifl Y/t�/OfI iC M��Y)a��,�'`[IL[f WKL�Y"�MCY�Of Mt�fYiO��'AICL WIW��YjY O[Y M r�
CM�I rM���y 1�r[rfO�(�IK<Y IM r�0�YS{-
- =A��M+MR��t I4!�i�iC1�t LCIY�l�+OM eJt�i[�s GOOIDO�Ir�OVf L PC�K1All.�OOi�Ji1/C!.�111(KI/L'i�w�'�IdC1\�
� M�Ii��Y{tA�Yi�CtGL�Or�-c-�o.
, Iv-�- 2 E'EBAU11Rlf, 99
�..
STORMi)aiER ?S�NACE?{£N? FiaT1UAI. FOR ?HE PUCE'P SOUND BaSSN
Inteqratsd eontzol achieves tt►is ideal by harmonizinq techniquea in an orqanised
war, by ukinq th� techniqusa compatible and blcndinq thsm into a multilaeeted,
tisxse>i. .r■c.a c2!-
?h� iujor eoapon�nts of IPIS as�:
• 2nitial inLonsation qath�ring: ?h� pest and/oc probleo ae�d� to bf
id�ntiti�d. Infosution ■hould b� eollact�d on the blologlr of tM p��t
and its wanaqement, and prsvion• athods used to aanage ths p��t in tJ��
:r�a. Record• •bould b• kept in sooe nanner of otf-qoiny acti�riti�s.
• Manitozinq: obiern th� plaots or tre •lt� for potential p��t problms
at s�qular int�rvals. Eaeh �onitorinq •y�tas n�ed• to b� tailor�d to
th� pasLlcular situation, and the le.rel of a!!ort st�ould b� appropriat�
to th� asount of damagt eaused by the peat, th• tiae availabls, and th�
•kill 1���1 of the person oakinq t?►c itupections.
• =�tabli�bisfq injury levsls: an in�ury or tol�rane• le�el i■ u��d to '
d�t�r�ine i1 th� psoDlem is •eriou• enouqh to juitify •ose kind of
tz�atment. l► irade-of! need• to b� wde betveen the amount of damaq�
done versu• ihe co�t o! eontiol. lui iajury l�vol should be d�Y�sainsd
for •ach pot�ntial pest, and [hat l�vel •hould D� compared with field
�asple• or oDservations befor� any aetion ic taken.
• R�card-keepinqz Records ahould be kept of vhat i• seen, deei�ions oade�
action• tak��, and zesults. Records ara th� meoory of tho ■yst�.
. FThen per�onnel l�avt, their ezperi�net is lost if th�re ire no record�.
• Lea�t-toxic tr�ataentai Treats�nt ■trat�qies �hould b� eho��n that az•
the lea�t di�rupCive of natural control�, least ha:ardou■ to huoan or
non-tary�t orqani�s� healtr, l�ast d�oaqinq to tht q�neral snvirot�ent,
the �o�t likely to produee a perman�nt reduction ia th� sn�izo�ueent•�
ability to support that pest, and tAs wst co�t-efiective in ths short
and lonq ter�. Ths aw�t eoerqy and cort-effectiv� p��t eanag�nt
•trateqy in the loaq t�zs i■ Lo redtsiqn the sy�tem to elidinat� tHe
lit� •upport •y�tms rsquired br the pests.
� • yvaluation aru! ad�u�tsent: 2napect after the tr�atm�nt action l�a• b��n
takan. Ra• tht treatssnt been worthwAile? Hw c:n th� vAol� proc��� b�
i�pro�ed to aehie�• th� overall oDjecti�es o! th• proqrasT (3)
l�iticids■ are used only wh�re other tschnlqu�• aze not ad'equate or po�sible to u�e.
?r�►lAC�OA is a wjar componant of IPK and can be b�rst addressed at ths pzoqras
d��iqo ataqe. �4}.
teoutinq caA reqularl7 De don� bY vozk aad ro�d crews for insect and veed
inf��tation� •o tAat some sort oi •arly action can b. takan. Praept action aqainst
a p�st before it becoM• •�tabli�lud neans tAat l�si to:ic MtRod■ of aooirol suc4
si Aand wading ean b� us�d in�iead oi an herDieid� or p�sticids.
DfOS TOR T� 1TSL OF tL52ICIDLS
l. 7► pe�ticide-u�e plan should b� fozmul�ted and sT�all inelude ai a mini�umt a
list of •elected pe�tieide• and Chcfz specific usesi Drand�, foz�ulations,
applicatioa oethod• and quantities to De u��d; equipo�nt u�• and �aint�nance
proeedura�; iafetr, •toraqe, and di�posal metl►ods; monitozinq and recard
kMpinq procedures and pabllc notie� proceduses. 1►11 pzoc�durss shall conlots
to th� requiremants ot Ch. 17.21 ACi1 and Ch. 16-228 ItAC (sea R.8 in
Chapter Iv-S).
. .
IY-h2 _ FEBRUl1RY� 2
f
i -
•5?OA?Si�]1SElt lS71NACElSEN? !f1►NV�L FOR iHE PUGET SOUND BASIN
2. 71r�y cor►trol ussd •hould bt done at the lif� itaqe when the p�st is so�t ,
rults�rabl�. lor �xasplt, if it i■ n�ce��azy to use a Bacillus trurinaien�is
application to control tent catezpillars, it must b� applied bcfors ths
eatsrpillar• cxoon or it will be ineffeetive. ]►ny method u�ed should De
sitr�pecitic and not vatd vAolesal� orer a vide azea. Onc• an application is
aad�, it� •ff�cti�eners should be evaluated �o Lhat future treatmsnt can b�
aor� iin�ly tunsd.
3. Sbs pe�tieid� cAo�en •hall D� tM lnast toxie pe�tieid� availaDl• tAat 1•
eapibl� ot r�ducinq th� int��tation to aec�ptabl• lev�l�. Th� p�sticid�
slfould r�adlly deqzad� in the �n�irorrient and/or ?►ave prop�rtie� that �troaqly
Dind it to �oil particle�.
1. Doeyfented f�idene� �hall D� pro�ided shwinq th� inapplicabilit7 of availabl•
alternati���.
S. ]1a annual ��aluation proe�dur• ■hovld be dev�lop�d :nd inelud� s reviw of t}►�
�fi�etiran�s• of tr�ata�nt�, buff�r• and •�nslti�e ar�s�, public conc�rns a�d
ooeplaint�, and recent toxieoloqical Lnfor�ation oa pesticides ns�d or
propo��d tos u�e.
f. T��ticide■ shall not b� •prayed vithin 300 f�ei of open vater• fncludinq
vetland�, pond�, •tr�ama, •louqhs and any drainaq� ditch oz channel that l�ad■
to op�a water. �
7- Zf r�qvir�d os reco��nd�d by the local qov�rnmsnt, publie poatlnq of the arsa
to Dt spzay�d shall lr� donr prior to tbe application. All �en�itive areas
ineludiaq vells, crseks and vetlandi �hall De fl�qged prior to sprayiaq ar►d a
. buffer strip oi appsoxi�sately 100 teet shall be used.
s. Spray applieation shall not occur durinq wacher conditions indieat�d in tds
' applicanl� ti7►C�.
!. Epr�ad�r/�tiek�rs us�d ahall bs th� l�ast Losic and/or eo�t tarqet sp�eific
a�ailaDl�. .
� 10. 71pplY th� pestieid� accordiaq to label dir�ction�. P�aCleid�• •hould b�
�ised, and �quip�eat elean�d, in an area whsze acoid�nial �pill� vill noi
� �ater �uzlae� or qrouad vater�, •od will nat eontaminate tbe soil. Rin�eate
lros �quipsant cl�apinq and/or tzipl�-riaainq oL peoticid� containsrs should
nt u��d as pzoduct.
11. ?�� applicatioa equipaent used sl�ould be capable of israsdiate shutofi in th�
�wnt of aa ewrqsncy.
7ttSO1JRCt5
hrson■ intazeated in 11�isiq out ooss infotsation on IPM can eontact tht •io-
Int�qral R��oures GAtsr (sZRC), P.O. soz 7414, E�sk�ley, G. 9�707. 2h�y
publi�h a nusber ot report• and • periodlcal, 'IPN lzaetitto�er'.
SA• D�partsent oi Lcoloqy puDliiAe• 'Sasardou• Wa�t� P��tieides' (;l9-41)
vhleh csn Aelp to deteraine it a pazticular pestieide is a dang�rous vait�,
and faclud�s intonatton on p�sticids wa�t• reduction.
SPA publi�he� 'Su�pend�d, Canceled and lt�stsicted Festicid�s' vhich liats tll
ze�triet�d pe�tfeid�s and tns spetitie ui�• vhieh are allw�d.
i
' . .
IY-4-2� FEBRUJIRY,
;
�
'
SSOA!liI71TER lS71NACEKEN? M7►NUAL FOR 2NE YQGET SOUND B?►SSN
, " Z1/��.30 � L2.00 lt7lIlrlD�llNCt OT S?O)t][ DIt1►INJIGE FACILITI£S
trop�r eatet�nance of public and privat• stozo.aater facilities is n�c�s�ary to
insaz� th�y ■�rve th=ir intcndrd function. Zn a •tudy rscsntly caopleted by ths
1Cipq Co�ntY Coa��rvation Di�triet t31. aloo�t onrhalt tha atiP• in�tallad on larg�
eoaatr�etion ■it�� wer� rot wintaiosd. Nithout adsquat� wintenance, •�dioent and
otMr dsbri■ eaa quickly clog faeilitits, aukinq th�a usalss�. RsAabilitation of
' wcb lacilitit� i� �:p�n�i�t, and in the ca�� of infiltration rystew aay be
iapo�siDlt. lollutod water and ��dirent� rwored durinq the clesning operstion w st
b� properlly disposed of.
M1IIfTIIU►IIC� STI►1tIIARDs
Local qo�erns�nt� •hall dwelop standard• fot ihe etint�nance of pub2ie and private
rto�+at�r facilities. Th��e standards •hall inelude but need noi be lisit�d Lo th�
lollo+rinqz
1. CatCt�Da�in�, siozsvat�r d�tantion and tztatmen! •ystems shall be in�pected iG
lea�t annually. a repz��antative ot the loeal qoverrrocnt shsll al�a in�pect
pri�at� facilili�s at lesst anaually to insur� complisnce by the ovner of the
following asint�nsnc� r�quirem�nts.
2. kfr deteriozation threateninq the strvctural integrity o! the facilitie• �hall
b� im�editte2y zepaired. 2hes• includs such thinga as replacement oi eleaa-
out gat��, cstchbasin lids, and roek in esargeaey spillvays.
3. ]1 catchba�ia iAall be cl�ansd if th* d�pth of deposits ar� �qual to or qz�ater
than 1/3 the depth from thf basin to t2t� invart vE th� 1v�+Q�t pip� into or out
ot the baain. if a caichbsRin i■ fouad during the annu�l insp�ctioa• �o
siqniticar�tly e:es�d ihi� �t:ndazd, it �hall bs cl�ansd every 6 sontrs. I!
woody deDzi� in likely to accuaulate in a eatchbasin, it should b� cleaned on
- a w�k�y baai�.
4. Rarninq siqn� (t.q. 'Dump !fo iiast• - Dra�n� to Ground Nster', 'Streass",
, 'Lake�' :te.) shall be paiated or embo�sed on or adjsc�nt to :ll seoro drain
inl�t�. TAey ihall b� r�paiat�d as n�ed�d.
5. Debris •hall be reqularly zamoved fros suzfac• basins used for either pea3c-
rat� control or atosvwat�r treatscnt.
6. Stozwrattr treataent faci2ities rhall be maiatain�d accordinq to criieria or
procedure• presentcd in Volueoe III_ (ttalnt�nance reqvireuents are detail�d at
tht •nd of •ach B�iP d��cription},
7. lasking lats sTull bs �vspt wh�a necs��ary to remove dsbris.
lZ1111L DSSPGSAL OP COMl7tlLZNASED xATER
(Lcology policy requdiny di�po�al is under developmcni by the Drban Non-Point
I{attaq�nt UniC and is not availabl• at thi� tim�.�
tI1f71I. D2bP0571L QT CON?1ulINATLD SLDSltYN?5
(LeoloqY polity regarding disposal 'Ls under dev�lopment by the Urb:n ►ton-Point
lRanaQesent Dnit and i• noi availaLle st this Lime.)
IV-4-25 FEBRU]LRY. 1 2
'
�/ STORM�f71TER lUN71GEl�NT 14ufUAL FOR THL YUGET SOVND H71SSN
I.'-{.11 3� 52.10 LOC�?SItG ILLZCZT CANIZ'C2ION5 To sTo1W D1tJlINS .
Zllieit eonnections are sanitas7r or proce�■ wa�tewatez drain� loeated in a bufldinq
tltat di�cluzqe to t!k stor� draia, rather than to tAe sanitary �war. hn allovabl�
s:cyptior i� rsoncontact eoolinq vater which eay ba di�charqed to a •torw dzain.
bcp�siene� !►a• �!►own tAat illicit conn�etion■ ar� �ery comison, •ven in �uildinqa
ooe�tsnet�d a• lat� at tba 1960•�. Huildinq o�m�ra ar� �aldm wvare thai el��ir
draln lia�� ars iapropszly conn�et�d ■inct th�ir s�wer bill• ar� ti�d to watsr ui�.
T1� lollowinq ars g�nezal quid�lin�■ to a��ist local qorernosnts in e�tablishlaq
tb�ir proqrae�.
l. ?rioritis• ar�si by aqe of �tructurea. Cir� priozity �o Duildiaq� vho��
int�rnsl acti�iti�s �ay causs vat�z pollution it tba drains ar� impropezly
eooa�eted.
1. Tr�par� a up of •ach area as it i• to bs surveyed. sha+ on tAe aap the known
location of •tore drains and •anitazy •�zs. 7►erial photo• may b� uselul.
Ch�ek record■ to ideatify ks►orm •id• sswer cona�etiona and ihov these oa tAe
�ap.
3. Conduct a field �ur��y o! the buildinqs to locat• obssrrable •tozm dsain• fro�
biaildinq• a�sd pav�d •uriac�s. Jiot� vher� th�s� join the public •toss drain.
�. ltiform Z'V in�peetion of tht •tona drain• and reeord �+ith vfdeo t�pe that
nott� footaq� s� the TV pasr�s through the line.
. S. Oo�pare !ht ob��zo�d location• o[ eonneetioni wlth th� information oa the wp.
llot� �u�pect cot�ection� tbat are incon�i�tent xith tA� fitld surv�y.
r
. 6. �Isovs ■iqnificant accw�ul�tion� ot sedis�ent froa tl+� •torw drain •Y�t�s.
, ?�tt the ssdi�o�nt betor� dispo�al (9MP R2.00, S�ction IV-5.10}. Ask priYate
prop�rty own�ra to cl�an th�ir ca�ehbaain■ and linei at the saee tis�.
7. Detsrain� vAath�r •acb suspect ronnsction i• a stors drain or int�rnal drain
by inapectioa ot tls� building and dys te�t3ng as n�ce�sary.
•. Ipfo=s pri�ate ovaer• vhe ha�e illicit eonneetions of tA�ir obliqation to
eonA�ct to tb� •�►itary s�w�er.
_ E�11 ii dev�lopinq a 'Draft ?taaual o! Yractic� Id�r►tification of Zllicit
. O�ne�etiona', prepartd Dy Ths Cadsu• Group, Zac. and Tziad inqin�er£nq, 2ne, ior
�svia Mei�� at Lhs OSEPI► P�rwii• Di•ision (iM-336}, �01 1�l St. S.lt., Wa�hinqton D.C.
101L0. ?As eo�t current draft �t dated Sepie�ber 7, 1990.
?hi� OSLP71 �anual eov�rs outfall sappinq, �valuation and analy�is, identificatloa af
petsnLial indu�trial •ouse��, oo-�ft• inv�atiqation and Siald survey ltchniqu�s in
qr�at dstail.
�
IV-{-Z6 FESRUIIRY, 1 92
, ;
SSOR?SWATER Hl►NAGE?fENT ?lANVAL FOR THE PUGET SOVND H]►SZN
T9�.12 a1Q =3.2Q S?RLrET SYILLPINC
]�volication: Street �.respiaq �hould b� implement�d for sit�s rrith high impsrvious
eov�r. St ■Fwuld bc i.mplement�d for proqram• d�siqn�d to iwprovs runaff quality
fra� �xiatinq deve�opessnt ■it��. Sitc• whieh sxhibit hiqh l�v�ls of •edi�ent on
lap�r�►iov surlsce� •hould al�o iieplsment aqgr�ssi�s source eontrol m�asures to
�rwtnt aae+�sul�tion ct such •odisenu.
Stse�tt �wtspirg is a co�wn naintenance nethod in aost urban ar�a�, but is •�ldo�
tl�ouqht o! a• a seans Lo eontrol pollutant�. Str�st swsepinq zefes� to th� r�mo�al
o! sccvaulattd dust, dirt xnd debri• Lrow iap�rvioy• str�eta surlaces wiih t2u� n�•
vt Melunical cl�aner�. Street �wepiaq aay bs an •ft�ctive method oi pollutint
eontsol ia Aiqh2r vrbaniz•d areas vhere spac� i• at a presiuo and retrotitting ir
diifieult.
1lbilt tr�ditional street �vespinq Aas •hovn 2lmitsd �tf�ctirene�s at i�pro�inq wat�r
qu�►liLy th�re i• sridonce tiut it caa b� effactin� when b�tttr equip�m�nt s�d
op�satinq pzoeeduze• ara u�ed. TA� Citr of Austin, Tsxas. (I) documerl�d
•tatisL3ca11Y aignificant �1plOY�tpL1 ia water quality at a shopping aall locat�d�
ia a qround vat�r reeharge zone aftst impleawntation of an intsnsive svs�pinq
ptOqra+�. Monitarinq condueted betor� and after •tartup of tls� •w�,epinq proqram
doe�sint�d that went sean conceatrationa drop�p�d fros SO to 84 percert for
particulats-t� poilut:nt�. Ths City conelud�d that pollutant coneentrations irwa
3iqh-density d�v�lopment cauld be dropped ►ritb better mafatenanc• and fr�qu�nt
parkinq lot �weePing•
Siliressan and Stenaercm (3j argue that street aveeping eonld pot�ntially be
•tf�ctive at removing oil �nd qrea�e. Shey state that svicepinq effort• wauld a�ed
� to eol�Centrat� on location� vkieh r�e�i�� heavy deposits �e.q., eurb�) and that
i�ati�r� stss�t �w�eping techooloqp aasds to b� derilo�d.
. `
___ She lr�nit• of •trt�t sweeping in the Paqet Sound basln •e�m ta be less eertsin.
_ TA� lw int�nsity rains which occur in the Puqet Sound basin rarsl7 cl�az •treet� ot
all diri and debris. Fitt and Si�sonnette {2) found that irs B�ll�ws, lrow� 50 to
300 qraa� per cnrD-set�r ot �tre:t surlacs particulate• sesain oa ihe atrNt• aiter
' stor� o! abont 6 �s ar qsaat�r. Lvadinq �aluea wvuld b� auch hiqh�r in araas wit2a
sts�t� in poor eendition_ On tAe snriae�, it ■��a tRat swe�pir� used in thi• arsa
- rould !►ar� a Detter opportunity te clran •tzests of all partieulate pollutants.
Ilo�+e�er, .P�tt and 83ssonrette aUo coacludrd that stre�t sxQepinq had littl• eft�cc
oA xat�r quslity. A possiDl• zaason far tbis ii that wost pollutint• adsorb on to ,
si2t and elar-sise particl�s, vhicA ars the oass oosi likely ta be zmeov�d br
raintsll. • -
- Ia ord�r to rs�s thes� particl�s, the w�t •tficienC Cyp�rs ot �r.�pers, sueb ws
ssqen�ratir� air cleansr• or vacuuw srn+pari sust Ds ustd. No curzent conventioaal
sw�per i� �lS�ctl�e in zwwriaq cil and yseas� (3).
� IQZ7lODS TG lSA7[I![IZE SFitEYIItG LipICIEMC7 (t)
l. Nuaiber of passes and ir�queney:
• incr�sss t1►e frequsncy of �veepinq •Creeta with hiqh pollutant loadinq�,
particularly in industrial ueaa
• Gen�ral�y epoaking, one pass can recoove SOt of avail:Dle eolids, two
pass�• pzovide• 75! removal.
• Strsets cleared veekly will provide mozt removal efficiency; less
frequent sveepinq will aeeompli�h little.
t V-{-2 FE8RU1►AY,
PCL XL error
� Subsystem: IMAGE
Error: MissingData
Operator: Readlmage
Position: 1664
f
�