Storm Water AgreementRESIDENTIAL
AGREEMENT TO MAINTAIN
STORM WATER FACILITIES AND TO IMPLEMENT A
POLLUTION SOURCE CONTROL PLAN
BY AND BETWEEN
YELM PROPERTY DEVELOPMENT L.L.C.
ITS HEIRS, SUCCESSORS, OR ASSIGNS
(HEREINAFTER "The Owner")
AND THE N C ~ T `t ~ ~ '~ ~ ~ ~
(HEREINAFTER "The Jurisdiction")
The upkeep and maintenance of storm water facilities and the implementation of
pollution source control best management practices (BMPs) is essential to the
protection of water resources. All property owners are expected to conduct business
in a manner that promotes environmental protection. This Agreement contains
specific provisions with respect to maintenance if storm water facilities and use of
pollution source control BMPs.
LEGAL DESCRIPTION:
PARCEL A:
TRACT 8 IN BLOCK 36 OF MCKENNA IRRIGATED TRACTS, AS PER PLAT
RECORDED IN VOLUME 9 OF PLATS, PAGE 43, RECORD OF THURSTON
COUNTY AUDITOR; EXCEPTING THEREFROM THE SOUTH 185 FEET OF THE
NORTHEAST 589 FEET; ALSO EXCEPTING THEREFROM THAT PORTION
CONVEYED TO THE CITY OF YELM BY DEED RECORDED MAY 28, 2003
UNDER RECORDING NO. 3535670;
PARCEL B:
THE SOUTH 185 FEET OF THE NORTHEAST 589 FEET OF TRACT 8 IN BLOCK
36 OF MCKENNA IRRIGATED TRACTS, AS PER PLAT RECORDED IN VOLUME 9
OF PLATS, PAGE 43, RECORD OF THURSTON COUNTY AUDITOR; EXCEPTING
THEREFROM THAT PORTION CONVEYED TO THE CITY OF YELM BY DEED
RECORDED MAY 28, 2003 UNDER RECORDING NO. 3535670;
PARCEL C:
LOT 7 IN BLOCK 36 OF MCKENNA IRRIGATED TRACTS, AS PER PLAT
RECORDED IN VOLUME 9 OF PLATS, PAGE 43, RECORD OF THURSTON
COUNTY AUDITOR; EXCEPTING THEREFROM THAT PART CONVEYED TO
FLORINE BRADELEY BY DEED DATED FEBRUARY 16, 1945 AND RECORDED
IN VOLUME 193 OF DEEDS, PAGE 639; ALSO EXCEPTING THEREFROM THAT
PORTION CONVEYED TO THE CITY OF YELM FOR RIGHT OF WAY DEED
RECORDED APRIL 23, 2003 UNDER RECORDING NO. 3524399;
t
PURPOSE r ~ E; ~`-`7` .~(
-~
The "Drainage Design and Erosion Control Manual for~hurston Region, V~ashington" requires
that a maintenance plan be developed for each storm water~faci i y raining more than 5,000
square feet. Section 3.3 of the Manual addresses contents of the plan, and requires that the plan
include the following elements:
Type and frequency of long term maintenance.
Identification of the responsible maintenance organization.
Frequency of sediment removal, cleaning of catch basins, vegetation control, etc.
An estimated average annual cost of maintenance for the storm water facility.
An agreement to maintain the system according to the maintenance plan is also required by the
manual.
CONTENTS: PAGE
Purpose and contents.---------------------------------------------------------------------------------- 2
Commercial maintenance agreement.------------------------------------------------- -------------- 3
Description of the storm water systems.------------------------------------------------------ ------ 7
Storm water basin diagram.---------------------------------------------------------------------- ----- 8
Maintenance program cover sheet.------------------------------------------------------------------- 9
Instructions for person maintaining the storm water system.----------------------------- ------- 10
Specific maintenance requirements.------------------------------------------------------------ ----- 11
Estimate of cost to maintain.-------------------------------------------------------------------------- 16
r:\forms\drainage\appendk.97 Page K - 2 10/97
Yelm Property Development L.L.C.
16422 Middle Rd. S.E.
Yelm, WA 98597
STORM DRAINAGE MAINTENANCE MANUAL
FOR
OAK RIDGE SUBDIVISION
16401 SE MIDDLE RD. SE.
YELM, WA 98597
LEGAL DESCRIPTION:
PARCEL A:
TRACT 8 IN BLOCK 36 OF MCKENNA IRRIGATED TRACTS, AS PER PLAT RECORDED IN VOLUME 9 OF PLATS, PAGE
43, RECORD OF THURSTON COUNTY AUDITOR; EXCEPTING THEREFROM THE SOUTH 185 FEET OF THE
NORTHEAST 589 FEET; ALSO EXCEPTING THEREFROM THAT PORTION CONVEYED TO THE CITY OF YELM BY DEED
RECORDED MAY 28, 2003 UNDER RECORDING NO. 3535670;
PARCEL B:
THE SOUTH 185 FEET OF THE NORTHEAST 589 FEET OF TRACT 8 IN BLOCK 36 OF MCKENNA IRRIGATED TRACTS,
AS PER PLAT RECORDED IN VOLUME 9 OF PLATS, PAGE 43, RECORD OF THURSTON COUNTY AUDITOR;
EXCEPTING THEREFROM THAT PORTION CONVEYED TO THE CITY OF YELM BY DEED RECORDED MAY 28, 2003
UNDER RECORDING NO. 3535670;
PARCEL C:
LOT 7 IN BLOCK 36 OF MCKENNA IRRIGATED TRACTS, AS PER PLAT RECORDED IN VOLUME 9 OF PLATS, PAGE 43,
RECORD OF THURSTON COUNTY AUDITOR; EXCEPTING THEREFROM THAT PART CONVEYED TO FLORINE
BRADELEY BY DEED DATED FEBf2UARY 16, 1945 AND RECORDED IN VOLUME 193 OF DEEDS, PAGE 639; ALSO
EXCEPTING THEREFROM THAT PORTION CONVEYED TO THE CITY OF YELM FOR RIGHT OF WAY DEED RECORDED
APRIL 23, 2003 UNDER RECORDING NO. 3524399;
BY:
SKILLINGS CONNOLLY INC.
P.O. Box 5080
Lacey, WA 98509-5080
January 19, 2006
PURPOSE
The "Drainage Design and Erosion Control Manual for Thurston Region, Washington"
requires that a maintenance plan be developed for each storm water facility draining more
than 5,000 square feet. Section 3.3 of the Manual addresses contents of the plan, and
requires that the plan include the following elements:
• Type and frequency of long term maintenance.
• Identification of the responsible maintenance organization.
• A vegetation management plan.
• Pollution source control instructions.
• An estimated annual cost of maintenance for the storm water facility.
An agreement to maintain the system according to the maintenance plan is also required by
the manual.
CONTENTS: PAGE
Purpose and contents.----------------------------------------------------------------------------- 2
Residential maintenance agreement.----------------------------------------------------------- 3
Maintenance program cover sheet.------------------------------------------------------------- 7
Instructions for person maintaining the storm water system.----------------------------- 8
Specific maintenance requirements.------------------------------------------------------------ 9
Estimate of cost to maintain.---------------------------------------------------------------------- 16
RESIDENTIAL
AGREEMENT TO MAINTAIN
STORM WATER FACILITIES AND TO IMPLEMENT A
POLLUTION SOURCE CONTROL PLAN
BY AND BETWEEN
YELM PROPERTY DEVELOPMENT L.L.C.
ITS HEIRS, SUCCESSORS, OR ASSIGNS
(HEREINAFTER "The Owner")
AND THE COUNTY OF THURSTON
(HEREINAFTER "The Jurisdiction")
The upkeep and maintenance of storm water facilities and the implementation of
pollution source control best management practices (BMPs) is essential to the
protection of water resources. All property owners are expected to conduct business
in a manner that promotes environmental protection. This Agreement contains
specific provisions with respect to maintenance if storm water facilities and use of
pollution source control BMPs.
LEGAL DESCRIPTION:
PARCEL A:
TRACT 8 IN BLOCK 36 OF MCKENNA IRRIGATED TRACTS, AS PER PLAT
RECORDED IN VOLUME 9 OF PLATS, PAGE 43, RECORD OF THURSTON
COUNTY AUDITOR; EXCEPTING THEREFROM THE SOUTH 185 FEET OF THE
NORTHEAST 589 FEET; ALSO EXCEPTING THEREFROM THAT PORTION
CONVEYED TO THE CITY OF YELM BY DEED RECORDED MAY 28, 2003
UNDER RECORDING NO. 3535670;
PARCEL B:
THE SOUTH 185 FEET OF THE NORTHEAST 589 FEET OF TRACT 8 IN BLOCK
36 OF MCKENNA IRRIGATED TRACTS, AS PER PLAT RECORDED IN VOLUME 9
OF PLATS, PAGE 43, RECORD OF THURSTON COUNTY AUDITOR; EXCEPTING
THEREFROM THAT PORTION CONVEYED TO THE CITY OF YELM BY DEED
RECORDED MAY 28, 2003 UNDER RECORDING NO. 3535670;
PARCEL C:
LOT 7 IN BLOCK 36 OF MCKENNA IRRIGATED TRACTS, AS PER PLAT
RECORDED IN VOLUME 9 OF PLATS, PAGE 43, RECORD OF THURSTON
COUNTY AUDITOR; EXCEPTING THEREFROM THAT PART CONVEYED TO
FLORINE BRADELEY BY DEED DATED FEBRUARY 16, 1945 AND RECORDED
IN VOLUME 193 OF DEEDS, PAGE 639; ALSO EXCEPTING THEREFROM THAT
PORTION CONVEYED TO THE CITY OF YELM FOR RIGHT OF WAY DEED
RECORDED APRIL 23, 2003 UNDER RECORDING NO. 3524399;
Whereas, The Owner has constructed improvements, including but not limited to
buildings, pavement, and storm water facilities on the property described above. In
order to further the goals of the Jurisdiction to ensure the protection and
enhancement of Jurisdiction's water resources, The Jurisdiction and The Owner
hereby enter into this Agreement. The responsibilities of each party to this
Agreement are identified below:
The Owner SHALL:
(1) Implement the storm water facility maintenance program included herein as
Attachment "A".
(2) Implement the pollution source control program included herein as Attachment
,.8..
(3) Maintain a record (in the form of a log book) of steps taken to implement the
programs referenced in (1) and (2) above. The log book shall be available for
inspection by The Jurisdiction staff by contacting The Owner during normal
business hours. The log book shall catalog the action taken, who took it, when it
was done, how it was done, and any problems encountered or follow-on actions
recommended. Maintenance items ("problems") listed in Attachment "A" shall be
inspected on a monthly or more frequent basis as necessary. The Owner is
encouraged to photocopy the individual checklists in Attachment A and use them
to complete its monthly inspections. These completed checklists would then, in
combination, comprise the monthly log book.
(4) Submit annual report to the Jurisdiction regarding implementation of the
programs referenced in (1) and (2) above. The report must be submitted on or
before May 15 of each calendar year and shall contain, at a minimum. the
following:'
(a) Name, address, and telephone number of the business, the person, or the firm
responsible for plan implementation, and the person completing the report.
(b) Time period covered by the report.
(c) A chronological summary of activities conducted to 'implement the
programs referenced (1) and (2) above. A photocopy of the applicable
sections of the log book with any additional explanation needed, shall
normally suffice. For any activities conducted by paid parties not affiliated
with The Owner, include a copy of the invoice for services.
(d) An outline of planned activities for the next year.
The Jurisdiction SHALL:
(1) Provide technical assistance to The Owner in support of its operation and
maintenance activities conducted pursuant to its maintenance and source control
programs. Said assistance shall be provided upon request, and as The
Jurisdiction time and resources permit, at no charge to The Owner.
(2) Review the annual report and conduct a minimum of one (1) site visit per year to
discuss performance and problems with The Owner.
(3) Review this agreement with The Owner and modify, it as necessary at least
once every three (3) years.
REMEDIES:
(1) If The Jurisdiction determines that maintenance or repair work is required to be
done to the storm water facility existing on the Owner's 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 and/or repair required. The Jurisdiction shall set a
reasonable time in which such work is to be completed by the persons who were
given notice. If the above 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 such
maintenance and bill the owner for all incurred expenses. The Jurisdiction may
also revoke storm water utility credits for the quality component or invoke
surcharges to the quantity component of the Owner if required maintenance is
not performed.
(2) If at any time The Jurisdiction determines that the existing system creates any
imminent threat to public health or welfare, the Jurisdiction may take immediate
measures to remedy said threat. No notice to the persons listed in (1), above,
shall be required under such circumstances.
(3) The Owner grants unrestricted authority to The Jurisdiction for access to any
and all storm water system features for the purpose of performing maintenance
or repair as may become necessary under Remedies (1) and/or (2).
(4) The persons listed in (1). above, shall assume all responsibly for the cost of any
maintenance and/or repairs to the storm water facility. Such responsibility shall
include reimbursement to The Jurisdiction within 30 days of the receipt of the
invoice for any such work performed. Overdue payments will require payment or
interest at the current legal rate for liquidated judgments. If legal action ensues,
any costs or fees incurred by The Jurisdiction will be borne by the parties
responsible for said reimbursements.
(5) The owner hereby grants to The Jurisdiction a lien against the above-described
property in an amount equal to the cost incurred by The Jurisdiction to perform
the maintenance or repair work described herein.
This Agreement is intended to protect the value and desirability of the real property
described above and to benefit all the citizens of The Jurisdiction. It shall run with
the land and be binding on all parties having or acquiring from The Owner or their
successors any right, title, or interest in the property or any part thereof, as well as
their title, or interest in the property or any part thereof, as well as their heirs,
successors, and assigns. They shall inure to the benefit of each present or future
successor in interest of said property or any part thereof, or interest therein, and to
the benefit of all citizens of The Jurisdiction.
~pi12~2t.~ /77. ~CZ.~ae~ ~ ~rw
Owner
Owner
STATE OF WASHINGTON )
)ss
COUNTY OF THURSTON )
On this day and year above personally appeared before me,
and known to be the individual(s) described, and who executed
the foregoing instrument and acknowledge that they signed the same as their free
and voluntary act and deed for the uses and purposes therein mentioned.
Given under my hand and official seal this day of ,
2005.
Notary Public in and for the
State of Washington, residing in
Dated at ,Washington, this day of
2005.
STATE OF WASHINGTON )
)ss
COUNTY OF THURSTON )
On this day and year above personally appeared before me,
who executed the foregoing instrument and acknowledge the
said instrument to be the free and voluntary act and deed of said for the uses and
purposes therein mentioned and on oath states he is authorized to execute the said
instrument.
Given under my hand and official seal this day of
2005.
Notary Public in and for the
State of Washington, residing in
APPROVED AS TO FORM:
ATTACHMENT "A" MAINTENANCE PROGRAM
COVER SHEET
Inspection Period:
Number of Sheets Attached:
Date Inspected:
Name of Inspector:
Inspector's Signature:
INSTRUCTIONS
The following pages contain maintenance needs for most of the components that are part of
your drainage system as well as for some components that you may have. Let us know if
there are any components that are missing from these pages. Ignore the requirements that
do not apply to your system. You should plan to complete a checklist for all system
components on the following schedule:
(1) Monthly from November through April.
(2) Once in late summer (preferably September).
(3) After any major storm (use 1 -inch in 24 hours as a guideline),
items marked "S" only.
Using photocopies of these pages, check off the problems you looked for each time you did
an inspection. Add comments on problems found and actions taken. Keep these "checked"
sheets in your files, as they will be used to write your annual report (due in May). Some
items do not need to be looked at every time an inspection is done. Use the suggested
frequency at the left of each item as a guideline for your inspection.
You may call the jurisdiction for technical assistance. Please do not hesitate to call,
especially if you are unsure whether a situation you have discovered may be a problem.
A=Annual (March or April preferred)
M=Monthly (see schedule)
S=After major storms
ATTACHMENT "A" (CONTINUED)
Maintenance Checklist for Closed Detention Systems (Pipes/Tanks)
Frequency Drainage System Problem Conditions to Check For Conditions That Should
Feature / Exist
M Storage area Plugged One-half of the end area of a vent is Vents free of debris and
(pipe tank) air vents blocked at any point with debris and sediment.
(small pipe sediment. Plugged vent can cause
that storage area to collapse.
connects
catch
basin to
storage
Pipe)
M Debris and Accumulated sediment depth exceeds All sediment and debris
sediment 15% of diameter. Example: 72-inch removed from storage
storage tank would require cleaning when area. Contact City
sediment reaches depth of 10 inches. Public Works for
guidance on sediment
removal and dis osal.
A Joints Any crack allowing material to leak into All joints between
between facility. tank/pipe sections are
tank/pipe sealed.
section
A Tank/pipe Any part of tank/pipe is noticeably bent of Tank/pipe repaired or
bent out of shape. replaced to design.
shape. Contact a professional
en ineer for evaluation.
M,S Manhole Cover not Cover is missing or only partially in place. Manhole is closed.
in lace. An o en manhole re wires maintenance.
A Locking Mechanism cannot be opened by one Mechanism opens with
mechanis maintenance person with proper tools. proper tools.
m not Bolts into frame have less than 1/2-inch of
workin thread ma not a I to self-lockin lids .
A Cover One maintenance person cannot remove Cover can be removed
difficult to lid after applying 80 pounds of lift. Intent and reinstalled by one
remove. is to keep cover from sealing off access to maintenance person.
maintenance.
A Ladder Maintenance person judges that ladder is Ladder meets design
rungs unsafe due to missing rungs, standards and allows
unsafe misalignment, rust, or cracks. maintenance persons
safe access.
If you are unsure whether a problem exists, please contact Jurisdiction and ask for technical assistance.
Comments:
ATTACHMENT "A" (CONTINUED)
Maintenance Checklist for Energy Dissipators
Frequency Drainage System Problem Conditions to Check For Conditions That
Feature Should Exist
A Rock Pad Missing or Only one layer of rock exists above Replace rocks to
moved rock native soil in area 5 square feet or design standards
lar er, or an ex osure of native soil.
A Rock-filled trench Missing or Trench in not full of rock. Vents free of debris
for discharge from moved rock and sediment.
and
M Dispersion trench Pipe plugged Accumulated sediment that exceeds Pipe cleaned/flushed.
with 20% of the design depth.
sediment
M Perforations Over '/2 of perforations in pipe are Clean or replace
lu ed lu ed with debris and sediment. erforated i e.
M,S Not Visual evidence of water discharging at Trench must be re-
discharging concentrated points along trench designed or re-built to
water (normal condition is a "sheet flow" of standard. Elevation of
properly water along trench). Intent is to prevent lip of trench should be
erosion damage. the same (flat) at all
oints.
M,S Water flows Maintenance person observes water Facility must be re-
out top of flowing out during any storm less than built or re-designed to
"distributor" the design storm or it is causing or standards. Pipe is
catch basin appears likely to cause damage. probably plugged or
damaged and needs
re lacement.
M,S Receiving Water in receiving area is causing or Stabilized slope with
area over- has potential of causing landslide. grass or other
saturated. vegetation, or rock if
condition is severe.
If you are unsure whether a problem exists, please contact Jurisdiction and ask for technical assistance.
Comments:
ATTACHMENT "A" (CONTINUED)
Maintenance Checklist for Control Structure/Flow Restrictor
(structure that controls rate at which water exits facility)
Frequency Drainage System Problem Conditions to Check For Conditions That
Feature / Should Exist
M Structure Trash & Distance between debris buildup and All trash and debris
debris bottom of orifice plate is less than 1'/z removed.
(includes feet.
sediment)
A Structural Structure is not securely attached to Structure securely
damage manhole wall and outlet pipe structure attached to wall and
should support at least 1,000 pounds of outlet pipe.
u or down ressure.
A Structure is not in upright position (allow Structure in correct
u to 10% from lumb . osition.
A Connections to outlet pipe are not Connections to outlet
watertight and show signs of rust. pipe are watertight;
structure repaired or
replaced and works
as desi ned.
M Any holes -other than designed holes - in Structure has no
the structure. holes other than
desi ned holes.
M,S Cleanout gate Damaged or Cleanout gate is not watertight or is Gate is watertight
missing missing. and works as
desi ned.
A Gate cannot be moved up and down by Gate moves up and
one maintenance person. down easily and is
waterti ht.
M,S Chain leading to gate is missing or Chain is in place and
dama e. works as desi ned.
A Gate is rusted over 50% of its surface Gate is repaired or
area. replaced to meet
desi n standards.
M,S Obstructions Any trash, debris, sediment, or vegetation Plate is free of all
blocking the plate. obstructions and
works as desi ned.
M,S Overflow pipe Obstructions Any trash or debris blocking (or having the Pipe is free of all
potential of blocking) the overFlow pipe. obstructions and
works as desi ned.
If you are unsure whether a problem exists, please contact Jurisdiction and ask for technical assistance.
Comments:
ATTACHMENT "A" (CONTINUED)
Maintenance Checklist for Catch Basins and Inlets
Frequency Drainage Problem Conditions to Check For Conditions That
System / Should Exist
Feature
M,S General Trash, Trash or debris in front of the catch basin No trash or debris
debris, and opening is blocking capacity by more located
sediment in than 10%. immediately in
or on basin front of catch
basin opening.
Grate is kept
clean and allows
water to enter.
M Sediment or debris (in the basin) that No sediment or
exceeds 1/3 the depth from the bottom debris in the
of basin to invert of the lowest pipe into catch basin.
or out of the basin. Catch basin is
dug out and
clean.
M,S Trash or debris in any inlet or pipe Inlet and outlet
blocking more than 1/3 of its height. pipes free of trash
or debris.
M Structural Corner of frame extends more than'/. Frame is even
damage to inch past curb face into the street (if with curb.
frame applicable).
and/or top
slab
M Top slab has holes larger than 2 square Top slab is free of
inches or cracks wider than %. inch holes and cracks.
(intent is to make sure all material is
runnin into the basin .
M Frame not sitting flush on top slab, i.e., Frame is sitting
separation of more than'/. inch of the flush on top slab.
frame from the to slab.
A Cracks in Cracks wider than'/: inch and longer Basin replaced or
basin than 3 feet, any evidence of soil particles repaired to design
walls/botto entering catch basin through cracks, or standards.
m maintenance person judges that Contract a
structure is unsound. professional
engineer for
evaluation.
A Cracks wider than %2 inch and longer No cracks more
than 1 foot at the joint of any inlet/outlet than %. inch wide
pipe or any evidence of soil particles at the joint of
enterin catch basin throw h cracks. inlet/outlet i e.
A Settlement/ Basin has settled more than 1 inch or Basin replaced or
misalignme has rotated more than 2 inches out of repaired to design
nt alignment. standards.
Contact a
professional
engineer for
evaluation.
M,S Fire hazard Presence of chemicals such as natural No color, odor, or
or other gas, oil, and gasoline. Obnoxious color, sludge. Basin is
pollution odor, or sludge noted. dug out and
clean.
M,S Outlet pipe Vegetation or roots growing in inlet/outlet No vegetation or
is clogged pipe joints that is more than six inches root growth
with tall and less than six inches apart. present.
ve etation
If you are unsure whether a problem exists, please contact Jurisdiction and ask for technical assistance.
ATTACHMENT "A" (CONTINUED)
Maintenance Checklist for Gates
Frequenc Drainage Problem Conditions to Check For Conditions That
y System / Should Exist
Feature
M Damaged or Gate is broken, jammed, or missing. Pond has a functioning
missing gate to allow entry of
components people and maintenance
equipment such as
mowers and backhoes.
If a lock is used, make
sure City Stormwater
Section field staff have a
ke .
M Broken or missing hinges such that Hinges intact and tubed.
gate cannot be easily opened and Gate is working freely.
closed b a maintenance erson.
A Gate is out of plumb more than 6 Gate is aligned and
inches and more than 1 foot out of vertical.
desi n ali nment.
A Missing stretcher bar, stretcher Stretcher bar, bands,
bands, and ties. and ties in lace.
If you are unsure whether a problem exists, please contact the Jurisdiction and ask for technical assistance.
Comments:
ATTACHMENT "A" (CONTINUED)
Maintenance Checklist for Access Roads/Easements
Frequen Drainage Problem Conditions to Check For Conditions
cy System That Should
Feature Exist
One General No access road If ponds or other drainage system Determine
Time exists features needing maintenance by whether an
motorized equipment are present, easement to
either an access road or access drainage
form public streets is required. feature exists.
If yes, obtain
City permits
and construct
gravel (or
equal) access
road. If not,
report lack of
easement to
Ci attention.
M Blocked roadway Debris which could damage Roadway free
vehicle tires (glass or metal). of debris
which could
dams a tires.
A Any obstructions which reduce Roadway
clearance above road surface to overhead
less than 14 feet. clear to 14
feet hi h.
A Any obstructions restricting the Construction
access to less than 15 feet width. removed to
allow at least
a 15-foot-wide
access.
A,S Road Settlement, When any surface defect exceeds Road surface
Surface potholes, mush 6 inches in depth and 6 square uniformly
spots, ruts feet in area. In general, any smooth with
surface defect which hinders or no evidence of
prevents maintenance access. settlement,
potholes,
mush spots,
or ruts.
Occasionally
application of
additional
gravel or pit-
run rock will
be needed.
M Vegetation in road Woody growth that could block Remove
surface vehicular access. Excessive weed woody growth
cover. at early stage
to prevent
vehicular
blockage. Cut
back weeds if
they begin to
encroach on
road surface.
M,S Shoulders Erosion damage Erosion within 1 foot of the Shoulder free
and roadway more than 8 inches wide of erosion and
ditches and 6 inches deep. matching the
surrounding
road.
If you are unsure whether a problem exists, please contact Jurisdiction and ask for technical assistance.
Comments:
ATTACHMENT "A" (CONTINUED)
Maintenance Checklist for Ponds
Frequency Drainage Problem Conditions to Check For Conditions That Should
System Exist
Feature
M,S General Trash & debris Dumping of yard waste such Remove trash & debris
build-up in pond. as grass clippings and branches and dispose as pre-scribed
into basin. Unsightly accumulation by City Waste Management
of non-degradable materials such Section.
as glass, plastic, metal, foam and
coated a er.
M Poisonous Any poisonous vegetation in Remove poisonous
vegetation which may constitute a hazard to vegetation. Do not spray
the public. Examples of poisonous chemicals on vegetation
vegetation include: tansy ragwort, without obtaining guidance
poison oak, stinging nettles, devils from the Cooperative
club. Extension Service and
ap royal from the Cit .
M,S Fire hazard or Presence of chemicals such Find sources of
pollution as natural gas, oil, and gasoline, pollution and eliminate
obnoxious color, odor, or sludge them. Water is free from
noted. noticeable color, odor, or
contamination.
M Grass not growing For grassy ponds, grass cover Grass cutting
or is overgrown. is sparse and weedy or is unnecessary unless dictated
over rown. b aesthetics.
M Rodent holes Any evidence of rodent holes if Rodents destroyed and
facility is acting as a dam or berm, dam or berm repaired.
or any evidence of water piping Contact the Thurston
through dam or berm via rodent County Health Department
holes. for uidance.
M Insects When insects such as wasps Insects destroyed or
and hornets interfere with re-moved from site. Contact
maintenance activities, or when Cooperative Extension
mos uitoes become a nuisance. Service for uidance.
A Tree growth Tree growth does not allow Trees do not hinder
maintenance access or interferes maintenance activities.
with maintenance activity (i.e.,
slope mowing, silt removal, or
equipment movements). If trees
are not interfering with access,
leave trees alone.
M Side slopes Erosion on berms Check around inlets and Find causes or erosion
of pond or at entrance/exit outlets for signs of erosion. Check and eliminate them. Then
berms for signs of sliding or settling. slopes should be stabilized
Action is needed where eroded by using appropriate erosion
damage over 2 inches deep and control measure(s): e.g.,
where there is potential for rock reinforcement, planting
continued erosion. of rass, com action.
M Storage area Sediment buildup Accumulated sediment that Sediment cleaned out
in pond exceeds 10% of the designed pond to designed pond shape and
depth. Buried or partially buried depth; pond re-seeded if
outlet structure probably indicates necessary to control
si nificant sediment de osits. erosion.
A Emergency Water obstructer Debris block outlet. Remove debris.
overflow
If you are unsure whether a problem exists, please contact the jurisdiction and ask for technical assistance.
Comments:
ATTACHMENT "A" (CONTINUED)
Maintenance Checklist for Infiltration Systems
Frequency Drainage Problem Conditions to Check For Conditions That Should
System Exist
Feature
M,S General Trash & debris See Maintenance Checklist for See Maintenance
buildu in and Ponds. Checklist for Ponds.
M Poisonous See Maintenance Checklist for See Maintenance
ve etation Ponds. Checklist for Ponds.
M,S Fire hazard or See Maintenance Checklist for See Maintenance
ollution Ponds. Checklist for Ponds.
M Vegetation not See Maintenance Checklist for See Maintenance
growing or is Ponds. Checklist for Ponds.
over rown
M Rodent holes See Maintenance Checklist for See Maintenance
Ponds. Checklist for Ponds.
M Insects See Maintenance Checklist for See Maintenance
Ponds. Checklist for Ponds.
A Storage area Sediment A soil texture test indicates Sediment is removed
buildup in facility is not working at its designed and/or facility is cleaned so
system capabilities or was incorrectly that infiltration system works
designed. according to design. A
sediment trapping area is
installed to reduce sediment
transport into infiltration
area.
A Storage area A soil texture test indicates Additional volume is
drains slowly facility is not working at its designed added through excavation to
(more than 48 capabilities or was incorrectly provide needed storage.
hours) or designed. Soil is aerated and rototilled
overflows to improve drainage.
Contact the City for
information on its
requirements regarding
excavation.
M Sediment Any sediment and debris filling Clean out sump to
trapping area area to 10% of depth from sump design depth.
bottom to bottom of outlet pipe or
obstructing flow into the connector
i e.
One Time Sediment Storm water enters infiltration Add a trapping area by
trapping area not area directly without treatment. constructing a sump for
present settling of solids. Segregate
settling area from rest of
facility. Contact City for
uidance.
If you are unsure whether a problem exists, please contact the jurisdiction and ask for technical assistance.
Comments:
ATTACHMENT "A" (CONTINUED)
Maintenance Checklist for Fencing/Shrubbery Screen/Other Landscaping
Frequency Drainage Problem Conditions to Check For Conditions That
System Should Exist
Feature
M General eeds Weeds growing in more than 20% of Weeds present in
nonpoisonous) the landscaped area (trees and shrubs less than 5% of the
onl landsca ed area.
M Safety hazard Any presence of poison ivy or other No poisonous
poisonous vegetation or insect nests. vegetation or insect nests
present in landscaped
area.
M,S Trash or litter See Ponds Checklist. See Ponds
Checklist.
M,S Erosion of Noticeable rills are seen in Causes of erosion
ground landscaped areas. are identified and steps
surface taken to slow
down/spread out the
water. Eroded areas are
filled, contoured, and
seeded.
A Trees and Damage Limbs or parts of trees or shrubs Trim tree/shrubs to
shrubs that are split or broken which affect more restore shape. Replace
than 25% or the total foliage of the tree or trees/shrubs with severe
shrub. dama e.
M Trees or shrubs that have been Replant tree,
blown down or knocked over. inspecting for injury to
stem or roots. Replace if
severe) dama ed.
A Trees or shrubs which are not Place stakes and
adequately supported or are leaning over, rubber-coated ties around
causing exposure of the roots. young trees/shrubs for
su ort.
If you are unsure whether a problem exists, please contact the Jurisdiction and ask for technical assistance.
Comments:
ATTACHMENT "A" (CONTINUED)
Maintenance Checklist for Conveyance Systems (Pipes, Ditches, and Swales)
Frequency Drainage Problem Conditions to Check For Conditions That
System Should Exist
Feature
M,S Open Trash & Dumping of yard wastes such as grass Remove trash and
ditches debris clippings and branches into basin. Unsightly debris.
accumulation of non-degradable materials
such as glass, plastic, metal, foam and
coated a er.
M Sediment Accumulated sediment that exceeds Ditch cleaned of all
buildup 20% of the design depth. sediment and debris so
that is matches desi n.
M Erosion See Ponds Checklist. See Ponds
damage to Checklist.
slo es
A Rock lining Maintenance person can see native soil Replace rocks to
out of place or beneath the rock lining. design standard.
missing (if
a livable
Varies Catch See Catch Basins Checklist. See Catch Basins
basins Checklist.
M,S Swales Trash 8~ See above for Ditches. See above for
debris Ditches.
M Sediment See above for Ditches. Vegetation may need
buildup to be replanted after
cleanin .
M Vegetation not Grass cover is sparse and weedy or Aerate soils and
growing or areas are overgrown with woody vegetation. reseed and mulch bare
overgrown areas. Maintain grass
height at a minimum of 6
inches for best storm
water treatment. Remove
woody growth, recontour,
and reseed as necessa
M,S Erosion See Ponds Checklist. See Ponds
damage to Checklist.
slo es
M Conversion by Swale has been filled in or blocked by If possible, speak
home-owner shed, woodpile, shrubbery, etc. with homeowner and
to request that swale area
incompatible be restored. Contact City
use to report problem if not
rectified voluntaril .
A Swale does Water stands in swale or flow velocity A survey map may
not drain is very slow. Stagnation occurs. be needed to check
grades. Grades need to
be in 1-5% range if
possible. If grade is less
than 1%, underdrains may
need to be installed.
If you are unsure whether a problem exists, please contact the jurisdiction and ask for technical assistance.
Comments:
ATTACHMENT "A" (CONTINUED)
Maintenance Checklist for Grounds (Landscaping)
Frequency Drainage Problem Conditions to Check For Conditions That Should
System Exist
Feature
M General Weeds Weeds growing in more than 20% of Weeds present in less
(nonpoisono the landscaped area (trees and shrubs than 5% of the landscaped
us onl area.
M Safety Any presence of poison ivy or other No poisonous vegetation
hazard poisonous vegetation or insect nests. or insect nests present in
landsca ed area.
M.S Trash or See Ponds Checklist. See Ponds Checklist.
litter
M,S Erosion of Noticeable rills are seen in Causes of erosion are
ground landscaped areas. identified and steps taken to
surface slow down/spread out the
water. Eroded areas are filled,
contoured, and seeded.
A Trees and Damage Limbs or parts of trees or shrubs Trim tree/shrubs to restore
shrubs that are split or broken which affect more shape. Replace trees/shrubs
than 25% or the total foliage of the tree or with severe damage.
shrub.
M Trees or shrubs that have been Replant tree, inspecting
blown down or knocked over. for injury to stem or roots.
Re lace if severel dama ed.
A Trees or shrubs which are not Place stakes and rubber-
adequately supported or are leaning over, coated ties around young
causin ex osure of the roots. trees/shrubs for su ort.
If you are unsure whether a problem exists, please contact the jurisdiction and ask for technical assistance.
Comments:
COST ESTIMATE
FOR
MAINTENANCE
Monthly and After Major Storm:
Rock Galleries: 2 Hours
Swales 4 Hours
6 hrs. per month
12 Months/Year x 6.0 Hours/Month x $15.00/Hour = $1,080.00/Year
Annual:
Rock Galleries: $ 400.00 (Sediment removal
once every 5 years)
Conveyance Systems $1,500.00 (includes pipes,
ditches and swales)
General cleanup $1,000.00 (Includes cleaning
pavement surfaces,
and other drainage surfaces.)
$1,900.00/Year
TOTAL ESTIMATED ANNUAL MAINTENANCE COST = $2,980.00
Stormwater Program Guidance Manual
Volume /l
PURPOSE
Many products and practices commonly used in and around our houses are hazardous to
both ourselves and the environment. The purpose of this chapter is to give alternatives,
where possible, for those types of products and practices. There are two categories of
BMPs in this chapter. The first category of BMPs includes "good housekeeping" practices
that everyone should use. The second category of BMPs deals with erosion and pollution
control practices for people who raise large animals.
RECOMMENDED POLLUTION CONTROL PRACTICES FOR HOMEOWNERS
It has been said that the average home today contains more chemicals than the average
chemical lab of .100 years ago. When many of these chemicals are used industrially, they
can be subject to various health and safety standards; yet these same substances are used
freely and often carelessly in homes across the nation.
The BMPs in this section are divided into four categories: Household Hazardous Wastes,
Pesticides, Remodeling, and Septic Maintenance. Each section includes information on
available alternatives.
Household hazardous wastes
Many of the cleaning agents, solvents, polishes, etc. used commonly in the home are
considered hazardous wastes. These products may be toxic, corrosive, reactive,
flammable, and/or carcinogenic.. It is critical that these products are disposed of properly.
A list of some common household hazardous wastes is presented in Table 1.
In addition, many hazardous household chemicals persist for long periods of time in the
environment. Manufacturers may truthfully state that a product is "biodegradable"; most
products are biodegradable, but what is important is the rig at which they are broken
down and the ro u they are broken down into. The term "biodegradable" on its own
is thus rather meaningless unless the product is rapidly degraded into harmless breakdown
.products.
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It is important to note here that the term "biodegradable" currently has no legal definition
in this state. This means that any product can use this term according to the
manufacturer's own definition. This definition may not be at all similar to the consumer's
perception.
Household nroduct,~,anas~ement
1. Buy only those detergents that contain little or no phosphorus. Phosphorus can
cause algae ,blooms if it is washed into lakes, streams, bays or from septic systems
into ground water. Most detergents which are low or phosphate free are labeled as
such.
2. Use only the manufacturer's suggested amount-of any cleaner. More is not
necessarily better.
3. Products such as oven cleaner, floor wax, furniture polish; drain cleaners, and spot
removers. often contain chemicals that are toxic..- Buy the least tr~xic product
available, and use anon-toxic substitute if one can be found. Covens, for example
can be cleaned by applying table salt to spills, then scrubbing with a solution of
Wvashing soda and water. Table 2 lists some substitutes for commonly Wised
household cleaners.
1f it is necessary to use a product that contains toxic chemicals; then use the
product only as directed. do not combine products, as they may become more
dangerous when mixed (such as chlorine bleach and ammonia). Use protective
clothing and rubber gloves.
Contact the Hazardous Substance Hotline at "1-800-633-7585 if you have any
questions regarding how to dispose of 8 product or empty container. Many areas
now have either hazardous waste collection days, or permanent facilities where
residents can. bring hazardous wastes. Call your county's environmental health
department for further information.
4. ~ Chemicals left over from such hobbies as .photography are hazardous and should
not be flushed down the sink. This is especially important if your home is hooked
up to a septic system. Toxic chemicals can kill the bacteria in the tank that treat
sewage.
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5. Buy toxic products in small quantities. If you cannot use all of the product, try to
give it away instead of disposing of it.
6. Be sure that the contents of all containers are clearly marked.
7. Common (not automobile) batteries are one of the worst sources of heavy metals
found in landfills.. Instead of throwing them away, dispose of them at a hazardous
waste collection site.
AUTOMOTIVE USAGE, CARE AND MAINTENANCE
1. Cars should be serviced regularly. Any leaky lines or valves should be replaced.
Dumping oil, degreasers, antifreeze, and other automotive liquids into a stream or a
storm drain is illegal. Do not dump them onto the ground because they will end up
in stormwater runoff once it rains. Do not use oil to reduce dust levels on unpaved
areas.
2. If possible, recycle used oil and antifreeze. Keep them in separate containers. Call
the Recycling Hotline at 1-800-RECYCLE for the location of the nearest recycling
center or call your local gas stations.
3. Wrap empty oil or antifreeze containers in several layers of newspaper, tie securely
and place in a covered trash can. Antifreeze is sweet-tasting, but poisonous to
people, fish, pets and wildlife.
4. Sweep your driveway instead of/or before hosing it down. Many toxicants and
heavy metals associated with automobiles can build up on driveway surfaces and
be washed into local surface water when driveways are hosed down.
5. When washing vehicles, direct soapsuds onto the lawn or another vegetated area to
keep the soap from washing into the local surface water.
6. Small spills of oil and other fluids can be absorbed by using materials such as kitty
litter or sawdust. Wrap the used kitty litter and any contaminated soil in a plastic
bag and then place it ~in the garbage. If a spill reaches surface water, you mus
notify the nearest regional office of the Department of Ecology:
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Northwest .Region -Redmond $67-7000 (24-hour)
Southwest Region -Olympia 753-2353 (24-hour)
There are fines for failure to notify the appropriate agency. when a spill occurs.
7. Deicing chemicals (most commonly salt) are often used on private sidewalks and
driveways during cold winter weather. These chemicals can harm concrete less
than three years in age, and burn vegetation. They are also corrosive to cars and
other metal objects. Not only are the deicing chemicals pollutants, but the
additives are often .pollutants as well. Cyanide is formed from the breakdown of a
common anti-caking agent used in deicing chemicals:
Urea salts have been proposed as an alternative to other types of salt deicers, but
great care must be used in applying them: These salts contain large quantities of
nitrogen, which can severely burn plants if over-applied.
The use of these chemicals should be minimized or avoided if possible. While
deicing chemicals are more effective in removing snow from roads than are grits
such as sand, they cause much worse pollution and if used at all should be used in
moderation. --
SMALL BOAT USAGE, CARE AND MAINTENANCE
1. In' narrow creeks and coves boat wakes can contribute to shoreline erosion. To
minimize erosion, boats should, not produce wakes within 500. feet of shore. A
speed greater than 8 knots can cause a wake with great erosive force.
2. When washing a boat, use low phosphate or phosphate free detergent. Using a
brush and scrubbing the boat down after each use can minimize the need for
washing. When possible, avoid stain-removing products as they are generally~toxic.
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Table 1 Hazardous Household Substances List
Repair and RemQ~eling
1. Adhesives, glues, cements.
2. Roof coatings, sealants.
3. Caulking and sealants.
4. Epoxy resins.
5. Solvent-based paints.
6. Solvents and thinners.
7. Paint removers and strippers.
Cleaning Agents
1. Oven cleaners
2. Degreasers and spot removers
3. Toilet, drain and septic tank cleaners
4. Polishes, waxes and strippers
5. Deck, patio and chimney cleaners
6. Solvent cleaning fluids
P ii
1. Insecticides
2. Fungicides
3. Rodenticides
4. Molluscicides
5. Wood preservatives
6. Moss retardants
7. Herbicides
8. Fertilizers
Auto, Boat and Equipment Maintenance
1. Batteries
2. Waxes and cleaners
3. Paints, solvents and thinners
4. Additives
5. Gasoline
6. Flushes
7. Auto repair materials
8. Motor oil
9. Diesel oil
10. Antifreeze
Hobby and Recreation
1. Paints, thinners and solvents
2. Chemicals (photo and pool)
3. Glues and cements
4. Inks and dyes
5. Glazes
6. Chemistry sets
7. Bottled gas
8. White gas
9. Charcoal starter fluid
Miscellaneous
1. Ammunition
2. Asbestos
3. Fireworks
Source: Guidelines for Local Hazardous
Waste Planning, Ecology, No. 87-18, 1987.
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Table 2' NonrToxic or Less Toxic Alternatives to Toxic Products
Hazardous Product ~I,f~Qrnativelsl
air fresheners Set out a dish of vinegar or simmer
cinnamon and cloves or set out herbal
bouquets or potpourri in open dishes or burn
scented candles.
Bleach Borax or oxygen bleaches or reduce. bleach
by h and add '/. - %C. baking soda, or let
clothes dry in the sun.
Brass polish: Worcestershire sauce.
Chrome polish apple cider vinegar or a paste of baking
soda and water or a lemon peel.
Coffee stains Moist salt paste.
Coffee pot cleaner Vinegar..
Copper cleaner Mix lemon juice and salt or use tomato
catsup.
Drain cleaner Use a plunger followed by '/: C. baking soda
mixed in 'h C. vinegar. Let sit 15 minutes,
pour down Z qts. boiling water.
Furniture polish Linseed, olive or almond oils or a mixture of
3. parts olive oil to 1 part white vinegar or a
mixture of 1 Tbsp. lemon oil and 1 pint
mineral ail.
Garbage disposal deodorizer Used lemorf rind: or baking soda.
Glass cleaner Mix 2 Tbsp. vinegar with 1 quart water.
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Grease remover Make a paste of borax on a damp cloth.
Ink stain remover ~ Spray with leftover non-aerosol hairspray
before washing.
Laundry soap Borax, baking soda or washing soda.
Linoleum floor cleaner 1 C. white vinegar in 2 gals. water.
Mildew remover Equal parts vinegar and salt. f
Mothballs Cedar chips or blocks, or use dried tansy,
lavender or peppercorns in drawers and
closets.
Oil spills Kitty litter, sawdust.
Oil stain removal White chalk rubbed into the stain prior to
washing.
Over cleaner Pour lots of salt on fresh spills and scrape
off after the oven cools. A. soda water
solution will cut grease. Paint ammonia on
spills with a paintbrush; then rinse off.
Paint brush softener Hot vinegar.
Paint/grease remover Wear gloves or use baby oil.
Paint stripper Use mechanical sanding instead of chemical
strippers.
Pet odor removal Cider vinegar.
Pitch or sap remover Butter, margarine or vegetable shortening.
Porcelain stain remover Baking soda.
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Refrigerator deodorizer Open box of baking soda.
Rug/carpet cleaner (general) Use asoap-based non-aerosol rug shampoo,
vacuum when dry.
Rug/carpet cleaner (spots) Pour on club soda or sprinkle cornmeal or
cornstarch on the rug, let sit at least 30
mins. then vacuum.
Rust removal Lemon juice plus salt plus sunlight.
Rusty bolt remover Carbonated beverage.
Scorch mark remover Grated onion.
Spot remover Club soda, lemon juice or salt or rub with a
cornstarch paste, brush off when dry.
Scouring powder Baking soda or anon-chlorine scouring
powder.
Silver polish Soak silver in warm water with 1 Tbsp.
soda, 1 Tbsp. salt and a piece of aluminum
foil.
Stainless steel polish Mineral oil.
Toilet bowl cleaner Past of borax and lemon juice.
Tub and file cleaner '/~ C. soda and %= C. white vinegar mixed
with warm water.
Upholstery spot remover ~ Club soda.
Water mark remover Toothpaste.
Water softener %. C. vinegar.
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3. Boat hulls may have been repainted with tributyltin (a paint) to prevent fouling. This
type of paint is extremely toxic to marine life. When scraping the boat bottom,
catch the scrapings with a drop cloth. Compress the scrapings into as small a can
as possible, label the can and turn it in to the nearest household hazardous waste
collection center. Repaint the hull using acopper-based paint. Copper-based paints
are less toxic (although not non-toxic) to marine life.
PESTICIDES AND FERTILItERS
Pesticides (such as insecticides. and herbicides) and fertilizers are commonly used by
homeowners in their quest for bigger, healthier plants. These chemicals are easily
overused. Homeowners often do not know just how much fertilizer is necessary in their
soil. Often, people assume that more is better. These chemicals are easily introduced into
stormwater runoff and can. cause algae blooms (fertilizers) or kill off aquatic organisms
(pesticides).
Fertilizer management
1. Before fertilizing, test your soil. This can be easily done by using kits that are
available, or through tests provided by the County Cooperative Extension office in
your area. Use only -the recommended amount of fertilizer.
2. Use fertilizers that are appropriate for your area, and for the type of plants you are
growing. Work the fertilizer into the soil directly around the plant's drip line. By
incorporating the fertilizer into the soil, there will be less likelihood of contaminated
runoff.
3. Water before fertilizing. Water enough to dampen the ground thoroughly, but not
enough to cause surface runoff.
4. Many soils can benefit from the use of organic fertilizers such as compost or peat.
Not only do these substances add nutrients to soil, they also increase the porosity of
the soil and increase its ability to hold water.
As used here, the word pesticide can mean any herbicide, insecticide, rodenticide, miticide or other types
of chemicals used in the same manner.
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5. Slow release fertilizers (which are generally resin-coated) can be used in addition to
organic fertilizers. They are not mobile in the soil, and are only applied once, which
saves work.
In~,ggrated nest management
Rather than bringing out the sprayer whenever a pest infestation occurs in the garden,
consider using Integrated Pest Management (also known as IPM). IPM emphasizes the
evaluation of all factors including environmental effects before chemicals are applied.
Pesticides should only be used as a last resort. IPM maximizes the use of natural pest
controls. Some of the tactics that can be used to decrease or eliminate the use of
pesticide sprays include:
• Use. of Natural Predators. Pathogens: Because sprays generally kill many
beneficial insects instead of just the target pest, it may be necessary to
introduce natural predators back into the garden. Ladybugs, lacewings,
predatory wasps, and nematodes are all commercially available. Garter snakes
and toads are also predators and should not be eliminated from the garden.
There are some bacteria, viruses, and insect parasites that are specific to pests
and will not harm other insects or animals. A commonly used bacterium in the
Puget Sound area is BaciNus thuringiensis let), which is intended to control
infestations of tent caterpillars.
• Habitat Changes: Many times a change of habitat can control pest
infestations. Removal of old tires can cut down on the mosquito population by
removing a convenient water-filled location that they can breed in. Crop
rotation, even in a small garden can reduce the number of pest in#estations.
Removing last year's leaves from under rose bushes can cut down on the
incidence of mildew and blackspot, as these fungi overwinter in dead leaves.
• Timin Crops that can overwinter (such as leeks or carrots) should be planted
in the fall. This gives them the time to become established before pests
appear in the spring.
• Mechanical: Many eggs, larvae, cocoons,.-and adult insects can be removed by
hand. Be sure that the insect is properly identified prior to removing it so that
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beneficial insects are not destroyed in error. Drowning insects in water is an
alternative to squashing them.
• Resistant Plants: Plants that are native to this area are often more resistant to
pests and climate, etc. than are introduced plants. Many plant cultivars have
been developed which- are resistant to such diseases as verticitium wilt and
. peach leaf curl.
• Growing Conditions: Plants, such as hostas, that require some shade are more
susceptible to pests when they are grown in sun. Plants that are not properly
fertilized or watered are less vigorous in growth and tend to attract pests.
Plants that prefer an acid soil, such as azaleas, will perform better and be less
susceptible to. pests when they are grown in soil with the proper pH.
• Chemicals: Chemicals are a small part of the entire IPM plan and should be
applied only as needed after reviewing all other alternatives.
Pesticide management
1. Know what pest you are spraying for. Use the pesticide according to the
manufacturer's instructions-and buy-only the quantity needed. Many pesticides have
a limited shelf life and may be useless or degrade into even more toxic compounds if
kept on the shelf.
2. Do not apply more than the specified amount. Overuse can be dangerous to your
health as well as the health of wildlife and the environment. If more than one
chemical can be used to control the pest, choose the least toxic. The word
"caution" on the label means that the chemical is less toxic than one that is labelled
"warning."
3. Do not spray on windy days, in -the morning of what will be a very hot day, or when
.rain is likely to occur. Herbicides can drift and injure valuable ornamental .plants in
either your or your neighbor's back yard. Do not water heavily after application.
Plants should be lightly watered. BEFORE application to prevent burning of the
foliage. .
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4. Never apply pesticides near streams, ponds, or wetlands. Do not apply them to bare
or eroded ground. Many pesticides bind to soil particles and can be easily carried
into a stream or storm drain.
5. Pesticides should be stored well away from living areas. Ideally, the storage area
should have a cement floor and be insulated from temperature extremes. Always
keep pesticides in their original containers with labels intact. Labels often corrode
and become illegible in this climate and may have, to be taped onto the container.
6. Federal law now requires that all pesticides be labelled with the appropriate dis
cr F,'} j
method. Leftovers should never be dumped°anywhere, including a landfill. Ma ~°~:-~:
counties in this area conduct hazardous waste collection days or collect waste `~ ~`~}''
regularly at the landfill. Contact the county environmental health department for
more information.
7. Empty containers should be triple-rinsed and the leftover rinse water used as spray.
Once containers are triple-rinsed, they are not considered hazardous waste and may
be disposed of in most landfills. However, call your local landfill before putting the
container in the garbage. ;
8. If a pesticide is spilled onto pavement, it can be absorbed using kitty litter or
sawdust. The contaminated absorbent should be bagged and labeled and taken to a
hazardous waste collection site. If the pesticide is spilled onto dirt, dig up the dirt,
place it in a plastic bag and take it to a hazardous waste collection center.
9. Many pest control companies and licensed applicators have access to pesticides that
are more toxic than those available to the consumer. Check with the company
before they spray indoors or outdoors to find out what spray they will be using and
what precautions, if any, are necessary after the operator leaves.
HOME REMODELING
Remodeling uses some of the most toxic substances found in the home. Paints,
preservatives, strippers, brush cleaners, and solvents atl contain a wide range of
chemicals, some of which are suspected to be carcinogens lcancer-causing). These
products should never be dumped in a landfill or put down a sewer or septic system.
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1. When building a deck consider using wood instead of concrete. Wood decking
allows rainwater to:drip onto the ground below, keeping it from becoming surface
runoff.
2. Decks and sidewalks can also be built out of brick interlocking pavers or modular
concrete. If these surfaces are placed on a bed of well-drained soil, gravel or sand,
rainwater can infiltrate into the ground through them.
3. To reduce disposal problems, buy only the amount you need. Used turpentine or
brush cleaner can be filtered and reused. Paint cans should be allowed to dry and
then be disposed of during a hazardous waste collection day or at a permanent
collection location.
4. Large amounts of.leftover paint can'be given away, for example to a theater group.
Currently, the- City of Seattle is experimenting with recycling latex paint turned in as
hazardous waste. It is blended, cleaned, tinted, and is now being sold on a trial
basis as "Seattle Beige."
5. Roof downspouts can be adapted to infiltrate runoff where the soil is well drained.
The runoff from them can enter a gravel bed where it can infiltrate into the ground.
For design criteria, see BMP RI-15, Roof Downspout Systems in Volume III of the
Stormwater Management Manual for the Puget Sound Basin.
6. When gardening on slopes, reduce the potential for surface runoff by using terraces
across the face of the hill. These can be as simple as little soil "bumps" or can be
elaborate using such products as pressure-treated wood 4x4s or rock walls.
SEPTIC SYSTEM CARE AND MANAGEMENT
While septic~systems do not seem to have a direct relationship with stormwater runoff,
they can in some instances be related.
1. Roof drains and stormwater runoff should be diverted away from drainfields. Excess
water reduces the capacity of the drainfield to absorb effluent from the septic tank.
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2. Water from hot tubs should not be drained into a septic system all at once. They are
not designed to handle large volumes of chlorinated water.. Either :use the water on
plants in the yard, or drain the hot tub slowly over'a period of days..
3. Septic tank tanks should be pumped regularly. Ponded water, damp places in the
yard, foul odors and/or ;a-dark gray or black soil color may indicate septic drainfield
failure. Effluent from a malfunctioning septic tank can cause disease and nitrate
problems in groundwater.
LARGE ANIMAL MANAGE1111ENT
People often own livestock in low-density residential areas. Horses are the most popular
animal, but goats, cows, sheep, llamas, pigs and :chickens are also kept. Nearby streams
and lakes can be .adversely affected by manure-contaminated stormwater draining from
pastures. Overgrazing, a common ,problem, denudes ,pastures and allows :excessive runoff
and erosion. Contamination #requenily occurs when animals .defecate directly into a lake
or stream. Streambanks can also be broken down.
It is essential for livestock owners to install BMPs similar to those described :below. .Not
only will they help in controlling water quality, but they w`itl~help maintain productive
pastures by increasing the grass cover and reducing erasion.
Pasture management
1. Pastures should be fenced to keep animals away from surface water. If stock must
be watered at a stream, use cramp-and-fence system to :keep them out of the water
(Figure 1). A minimum 1 O-foot strip of vegetation should be :left between the #ence
and the water.
2. If the buffer area around the water cannot be fenced:, it should 'be ;planted with a
"living fence," vegetation that is :impenetrable to livestock. The bu#fer strip should
be at~ least 25 feet wide. Consult with local goverment for any other restrictions
and/or the restrictions contained in a Sensitive Areas Ordinance, if ,passed:.
3. Avoid overgrazing. Restrict grazing during the winter months w-hen .grasses are
dormant and easily overgrazed. Grazing when the soil is wet can cause compaction
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Stormwater Program Guidance Manual
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of the soil and can :result in reduced plant growth, erosion; and contamination of
surface water.
4. If animals must be kept in a pasture over the winter, a small "sacrifice" area should
be used for feeding and watering. This will limit the amount of land disturbed and
reduce the area of pasture that will need reseeding. The sacrifice area should be
located away from streams or standing water. Portable electric fencing can be used
to keep the animals in this temporary area.
5. Always limit the number. of animals pastured based on the amount of land available
and pasture productivity. The -focal Conservation District can offer advice on the
proper stocking rate.for your land. The smaller the acreage grazed, the greater the
chance for vegetative destruction, even when hay is provided.
6. Intensive livestock use may necessitate reseeding of a pasture every two to three
years to optimize production and minimize the chance of erosion. Ideal renovation
entails plowing the pasture. and sowing an annual crop such as corn, oats, or annual
rye grass for one year and reseeding again the following year. Animals should be
kept off the new seeding for the first year. Fields may be hayed towards the end of
the first growing year.
7. If planting an alternate crop for one year is not possible, some coverage and plant
species improvement .can be achieved by disking the pasture and reseeding.
8. Overgrazing can also be avoided by dividing the pasture into three or more units. and
establishing a grazing rotation period that allows foliage three to four weeks of
regrowth between grazing periods. A portable electric fence can also be used in this
situation.
9. The Soil Conservation Service and the County Conservation District can provide
growers with details of these practices.
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Stormwater Program Guidance Manual
Volume 1l
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Animal waste management
1. Manure should be collected regularly and stored. The storage site should be an area
well away from creeks, ditches, marshes, and ponded or flowing water, where off-
site runoff cannot mix with. manure and where seepage from manure cannot enter
surface water.
2. Stored manure should be covered with either a roof' or plastic sheeting to prevent the
entry of rainwater.. Rooftop runoff from the manure storage area should be diverted
away from the storage area by using gutters and downspouts. This clean water can
be infiltrated back into the ground to recharge ground water. BMPs III-RI-15 and III-
RI-16 in Volume III of the Stormwater Management Manual for the Puget Sound
Basin give design criteria for roof downspout infiltration systems.
3. Small watercourses adjacent to the manure storage. area should be redirected or
enclosed. To do any work in or on streambanks, a short-term water quality
modification permit or a hydraulic permit approval may be required.
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Stormwater Program Guidance Manual
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4. Concrete slabs with walls or curbs will provide the most control for manure storage.
The storage area should be designed so that liquid wastes are retained and directed
to a liquid storage area.
5. Manure maybe given away, or used as fertilizer on seeded pastures.
REFERENCES
Puget Sound Water Quality Authority, Managing Nonpoint Pollution -
an Action Plan for Puget Sound Watersheds, 88-31, June, 1989.
Washington State Dept. of. Ecology, Water Quality Guide -Recommended
Pollution Control Practices for Homeowners and- Small Farm Operators 87-30,
revised June, 1991.
Washington State Dept. of Ecology, Hazardous Waste Pesticides, 89-41, August, 1989.
Washington State Dept. of Ecology, Turning the Tide on Toxics in the Home, 1989.
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1 ~ Best Management Practices