HomeMy WebLinkAbout9706230740 STORM EASEMENT 062397J U L 1 7 1997
~q 3 - 1,3-, _~2-
CITY OF
THIS [m r.
C17Y CLERKS OFFICE
Return Address:
City of Auburn
City Clerk
25 West Main
Auburn, WA 98001
IJU 19 1131 PH '91
R rI- t" 10
Above this line reserved for recording information.
STORM WATER EASEMENT AND MAINTENANCE AGREEMENT
(FA00027-96 and BLD0647-96)
Reference # (if applicable): NIA Additional on page:
Grantor/Borrower: 1) Western Steel, Inc. 2)
Additional on page.
Grantee/Assignee/Beneficiary: City of Auburn
Legal Descriplion/STR: 'NE 114 12-21-04 Additional on page:
Assessor's Tax Parcel ID#: 000080-0049
0
Ile
THIS EASEMENT AND AGREEMENT made and entered into this ( - day of
0 19 by and between the City of Auburn, a municipal corporation of
King Count k, Washington, hereinafter referred to as "CITY" and Western Steel, Inc., located at
1038 Industry Drive, Seattle, WA 98188, hereinafter referred to as "PROPERTY OWNER".
WHEREAS, PROPERTY OWNER has applied for certain permits with the CITY for the
construction of facilities at 9 16th Street NW which create impervious surface, and
WHEREAS, the PROPERTY OWNER will complete a storm system; and
WHEREAS, the PROPERTY OWNER and the CITY desire that the storm system be
maintained to provide adequate facilities for controlling both the quantity and quality of storm
drainage; and
WHEREAS, for maintenance of a storm system it is necessary to have appropriate right-
of-way to bring in equipment to conduct maintenance functions; and
WHEREAS, maintenance requirement will be in perpetuity to provide both quantity and
quality of discharge; and
LO
^J
rro
W
C6
0
cs
Q
:PIZ
x
c~
c-~
Q
ti
{
.'LT
m
c-a
ca
to
w;
R7
CD
Storm Water Easement and Maintenance Agreement
Western Steel, Inc.
Page I of 17
WHEREAS, the parties desire that this Agreement be recorded to advise heirs, successors
and assigns of both parties as to the existence of this easement and agreement; and
WHEREAS, an easement is needed to bring in maintenance equipment; and
WHEREAS, the parties are both desirous of permitting inspection of the storm system to
p make certain that it is functioning properly and for purposes of determining the appropriate
repairs.
G NOW, THEREFORE, BASED UPON MUTUAL COVENANTS TO BE DERIVED
CO)
THE PARTIES AGREE AS FOLLOWS:
t0
Section 1, EASEMENT
D3
PROPERTY OWNER hereby provides an easement over, under and on that portion of the
property as showing on the approved Record Drawings revised pursuant to construction records
for the City of Auburn under Permit Nos. FA00027-96 and BLD0647-96, which Record
Drawings are hereby incorporated by reference as if set out in full. This easement shall be a
burden to that real estate which is legally described and attached as Exhibit A and shall be of
benefit to the City storm utility system.
Section 2, HEIRS, SUCCESSORS AND ASSIGNS
This Agreement shall be binding upon the heirs, successors and assigns of the parties.
Section 3, MAINTENANCE
The PROPERTY OWNER agrees to maintain the storm system in accordance with the
ordinances and all applicable codes of the CITY, the Stormwater Pollution Prevention
Maintenance and Operation Schedule (Exhibit `B"), and does hereby allow the CITY to come
onto the property of the PROPERTY OWNER via the easements described above and to inspect
and perform necessary maintenance if, after the PROPERTY OWNER is given notice to maintain,
and the PROPERTY OWNER fails to maintain, in that event the PROPERTY OWNER shall
reimburse the CITY for the costs incurred in maintaining the system and should the CITY incur
attorneys fees and costs in enforcing the agreement and/or maintaining or collecting maintenance
fees the PROPERTY OWNER agrees to pay reasonable attorney fees and costs of the CITY.
Storm Water Easement and Maintenance Agreement
Western Steel, Inc.
Page 2 of 17
Section 4, ACKNOWLEDGMENT OF OTHER ENFORCEMENT ACTIONS
PROPERTY OWNER acknowledges that there may be liability for violations of codes
that could result in additional fines andlor.the possibility of incarceration in addition to the fees for
maintenance should violations occur. %
EXECUTED as of the date first written above.
CITY OF AUBURN
D CTOR OF PUBLIC WORKS
0
a
Owner
1
4
`~o~POr•e ~ ~
.
7,
Date
Storm Water Easement and Maintenance Agreement
Western Steel, Inc.
Page 3 of 17 ,
owner late
STATE OF WASHINGTON)
)ss.
County of King )
I certify that I know or have satisfactory evidence that ' Ag& 1;ek
is the person who appeared before me, and said person ac wledged tha a/she signed
this instrument, on oath stated that he/she was authorized to execute the instrument and
acknowledged it as the ~~tL~icct of
a corporation, to be the free and voluntary act of such
party for the uses and purposes mentioned in this instrument.
Dated
L~
dl
i~
O
KRISTINE TANAKA
STATE OF WASHINGTON
NOTARY - PUBLIC
MY COMMISSION EXPIRES 8-17-93
STATE OF WASHINGTON)
)ss.
County of King )
Notary Public in and for the State of Washington
residing at
My appointment expires 10 - 7
I certify that I know or have satisfactory evidence that
is the person who appeared before me, and said person acknowledged that he signed this
instrument, on oath stated that he was authorized to execute the instrument and acknowledged it
as the DIRECTOR OF PUBLIC WORKS of THE CITY OF AUBURN to be the free and
voluntary act of such party for the uses and purposes tioned in this instrument.
Dated J.
,,`~IIIIIIfII~~,
F•
U , ` NpTAR m
owl
Z Notary Public 'n and fort a State o Washington
Pue►-~~ ~O residing at -~C_e~
My appointment expires (111,117
0j f W NS
HPM/bd
REF. H:\FAC\FAC2763\E97-301 (12/96) and Y:\PRMSYS\DOCUMENTIBLD0647_.96\EASEMAIN
Storm Water Easement and Maintenance Agreement
Western Steel, Inc.
Page 4 of 17
EXHIBIT A
LEGAL DESCRIPTION
TOTAL PARCEL: LOT D OF SHORT PLAT SPLO05-90
LOT 1: LOT D LESS THE EAST 166 FEET.
LOT 2: EAST 166 FEET OF LOT D.
C~
iL
Storm Water Easement and Maintenance Agreement
Western Steel, Inc.
Page 5 of 17
EXHIBIT B
Stormwater Pollution Prevention Plan
Site Address
"B" Street NW and 16th Street NW
Auburn, WA
Tax Parcel No. 000080-0049
O
Introduction
C) The "Microtel Inn" involves development of 1.74 acres into a three-story motel property.
I'- Stormwater from this project is detained with storm detention pipe and parking lot
ponding. Runoff is treated with a bioswale. The stormwater then discharges to the
existing drainage channel located within a 40' wide easement along the north property
line. Eventually this runoff will reach the Mill Creek drainage basin, west of the site.
Plan Goal
The property owner is required to enhance and'protect water quality due to stormwater
discharges from the site, as dictated by the City of Auburn's Developer Design Manual.
In this document, the site's storm drainage system is generally described and the
inspection and maintenance requirements are outlined.
Preventative BMP's
Preventative Best Management Practices '(BMP's) shall be implemented to ensure that
the stormwater is properly treated prior to site discharge. Such practices include the
following:
1) Areas which disharge runoff to the storm drainage system should be kept
free of debris and any dangerous wastes which may pollute the storm
drainage system. See Appendix A.
2) The storm drainage utilities and bioswale should be properly maintained,
as described in the following sections.
z
Storm Water Easement and Maintenance Agreement
Western Steel, Inc.
Page 6 of 17
Stormwater Pollution Prevention Plan (Cont.)
Treatment BMP's
Site runoff is treated via the bioswale along the south property line. This bioswale was
designed per the requirements of the Washington State Department of Ecology
Stormwater Management Manual of the Puget Sound Basin (1992). The bioswale
should be mowed regularly during the summer to promote growth and pollutant uptake,
but must not be cut below the water quality design flow of three (3) inches. The bottom
width and swale sideslope should not be altered without approval from the City of
Auburn. See Appendix A for maintenance requirements.
Inspection
0 Regular inspection of the storm drainage facilities will ensure their proper function.
See Appendix A for inspection requirements.
Maintenance
CD Regular maintenance of the storm drainage facilities will ensure their proper function.
0 See "Treatment BMP's" and Appendix A and for maintenance requirements.
N
Person of Responsibility
Western Steel, Inc.
1038 Industry Drive
Seattle, WA 98188
(206) 575-8352
Attn: Kent Vail orb
Sig
Date:
Design Engineer: Rupert Engineering, Inc.
Attn: Pedro DeGuzman
1519 West Valley Hwy. N. Suite 101
Auburn, WA 98001
Plan and/or Information Updates
The City of Auburn Utilities Section is to review and approve any changes to this
Stormwater Pollution Prevention Plan prior to changes in its implementation.
Additionally, any changes in ownership or person of responsibility are to be reported to
the City Utilities Section.
Storm Water Easement and Maintenance Agreement
Western Steel, Inc.
Page 7 of 17
APPENDIX A
STORM DRAINAGE FACILITY
INSPECTION AND MAINTENANCE
REQUIREMENTS
O
O
s~
LD
OStorm Water Easement and Maintenance Agreement
Western Steel, Inc.
Page 8 of 17
ATTACHMENT "A"
MAINTENANCE PROGRAM
Maintenance Checklist for Closed Detention Systems (Pipes/Tanks)
Frequency
Drainage
/
Problem
Conditions To
Conditions That Shall Exist
Systems
V
Check For
Feature
M
Storage
Plugged air vents (small
One-half of the end area of a vent is
Vents free of debris and
area (pipe
pipe that connects catch
blocked at any point with debris and
sediment
tank)
basin to storage pipe)
sediment Plugged vent can cause
storage area to collapse.
M
Debris and sediment
Accimulated sediment depth exceeds
All sediment and debris
I S% of diameter. Example: 72- inch
removed from storage area.
storage tank would require cleaning
Contact the County for
when sediment reaches depth of 10
guidance on sediment removal
inches
and disposal.
A
Joints between tank/pipe
Any crack allowing material to leak
All joints between tankipipe
section
into facility.
sections are sealed.
A
Tank/pipe bent out of
Any part of tank/pipe is noticeably
Tank/pipe repaired or replaced
shape
bent out of shape.
to design. Contact a
professional engineer for
evaluation.
M's
Manhole
Cover not in place
Cover is missing or only partially in
Manhole is dosed.
place. Any open manhole requires
maintenance.
A
Locking mechanism not
Mechanism cannot be opened by one
Mechanism opens with proper
working
maintenance person with proper tools.
tools.
Bolts into frame have less than 112-
inch of thread (may not apply to self-
locking lids).
A
Cover difficult to remove
One maintenance pennon cannot
Cover can be removed and
remove lid after applying 80 pounds of
reinstalled by one
lift. Intent is to keep cover from
maintenance person.
sealing off access to maintenance.
A
Ladder rungs unsafe
Maintenance person judges that
Ladder meets design
I
ladder is unsafe due to missing rungs,
standards and allows
misalignment, rust, or cracks. Ladder
maintenance persons safe
L-
must be fixed or secured immediately.
access.
If you are unsure whether a problem exists, please contact a Professional Engineer.
Comments:
-KgY:
A = Annual (March or April preferred)
M Monthly (see schedule)
S = After major storms (use 1-inch in 24 hours as a guideline)
Storm Water Easement and Maintenance Agreement
Western Steel, inc.
Page 9 of 17
ATTACHMENT "A" (CONTINUED)
t
Maintenance Checklist for Control Structure/Flow Restrictor
(Structure that controls rate at which water exits facility)
O
C
N
cp;
Frequency
Drainage
/
Problem
Conditions To Check For
Conditions That Should Exist
Systems
✓
Feature
M
Structure
Trash & debris
Distance between debris buildup and bottom
All trash and debris removed.
(includes
of orifice plate is less than 1-12 feet
sediment)
A
Structural
Structures are not securely attached to
Structure securely attached to
damage
manhole wall and outlet pipe structure should
wall and outlet pipe.
support at least 1,000 pounds of up or down
pressure.
A
Structure is not in upright position (allow up to
Structure in correct position.
10% from plumb).
A
Connections to outlet pipe are not watertight
Connections to outlet pipe are
and show signs of rust
watertight; structure repaired or
replaced and works as
designed.
M
Any holes-other than designed holes-in the
Structure has no holes other
structure.
than designed holes.
M'S
Cleanout
Damaged or
Cleanout gate is not watertight or is missing.
Gate is watertight and works as
gate
missing
designed.
A
Gate cannot be moved up and down by one
Gate moves up and down
maintenance person,
easily and is watertight
M's
Chain leading to gate is missing or damaged.
Chain is in place and works as
designed.
A
Gate is rusted over 50% of its surface area.
Gate is repaired or replaced to
meet design standards.
M's
Obstructions
Any trash, debris, sediment, or vegetation
Plate is free of all obstructions
blacking the plate.
and works as designed.
M'S
Overflow
Obstructions
Any trash or debris blocking (or having the
Pipe is free of all obstructions
pipe
potential of blocking) the overflow pipe.
and works as designed.
If you are unsure whether a problem exists, please contact a Professional Engineer.
Comments:
Kew
A=Annual (March or April preferred)
M=Monthly (See schedule)
S=After major storms (use 1-inch in 24 hours as a guideline)
Storm Water Easement and Maintenance Agreement
Western Steel, Inc.
Page 10 of 17
ATTACHMENT "A" (CONTINUED)
Maintenance Checklist for Catch Basins and Inlets
0
Frequency
Drainage
System
Problem
Conditions To Check For
Conditions That Should Exist
Feature
M'S
General
Trash, debris,
Trash or debris in front of :he catch
No trash or debris k:cated immediately
and sediment in
basin opening is blocking capacity by
in front of catch basin opening. Grate
or on basin
more than 10%
is kept dean and allows water to enter,
M
Sediment or debris (in the basin) that
No sediment or debris in the catch
exceeds 113 the depth from the bottom
basin. Catch basin is dug out and
of basin to invert of the lowest pipe into
clean.
or out of the basin.
M'S
Trash or debris in any inlet or pipe
Inlet and outlet pipes free cf trash or
blocking more than 113 of its height
debris.
M
Structural
Comer of frame extends more than 314
Frame is even with curb.
damage to frame
inch past curb face into the street (If
and/or top slab
applicable).
M
Too slab has holes larger than 2 square
Top slab is free of holes and cracks.
inches or cracks wider than 114 inch
(intent is to make sure all material is
funning into the basin).
M
Frame not sitting lush on top slab, i.e.,
Frame is sitting flush on top slab.
separation of more than 314 inch of the
frame from the top slab.
A
Cracks in basin
Cracks wider than 112 inch and longer
Basin replaced or repaired to design
walls/bottom
than 3 feet, any evidence of soil
standards. Contact, a professional
partic!es entering catch basin through
engineer for evaluation.
cac'ks, or maintenance person judges
that structure is unsound.
A
Cracks wider than 112 inch and longer
No cracks more than 114 inch wide at
than 1 foot at the joint of any inlet/outlet
the joint of inlet/outlet pipe. Contact a
pipe or any evidence of soil particles
professional engineer for evaluation.
entering catch basin through cracks.
A
Settlement!
Basin has settled more than 1 inch or
Basin replaced or repaired to design
misalignment
has rotated more than 2 inches out of
standards. Contact a professional
alignment
engineer for evaluation.
M,S
Fire hazard or
Presence of chemicais suc'1 as natural
No color, odor, or sludge. Basin is dug
other pollution
gas, oil, and gasoline. Obnoxious color,
out and clean.
odor, or sludge noted.
M'S
Outlet pipe is
Vegetation or roots growing in
No vegetation or root growth present
dogged with
inlet/outlet pipe joints that is more than
t
vegetation
six inches tall and less than six inches
aoart.
If you are unsure whether a problem exists, please contact a Professional Engineer.
Comments:
fir.
A=Annual (March or April preferred)
M=Monthly (see schedule)
S=After major storms (use 1-inch in 24 hours as a guideline)
Storm Water Easement and Maintenance Agreement
Western Steel, Inc.
Page I I of 17
ATTACHMENT "A" (CONTINUED)
(
Maintenance Checklist for Energy Dissipators
Frequency
Drainage
System
Problem
Conditions to Check For
Conditions That Should Exist
Feature
A
Rods pad
Missing or moved
Only one layer of rock exists above native
Replace rocks to design standard.
rock
soil in area 5 square feet or larger, or any
exposure of native soil.
A
Rock-filled
Missing or moved
Trench is not full of rock.
Add large rock or - 30 lb. each)
trench for
rock
so that rock is visible above edge
discharge from
of trench.
pond
M
Dispersion
Pipe plugged with
Accumulated sediment that exceeds 20%
Pipe cleanediflushed.
trench
sediment
of the design depth.
M
Perforations
Over 1R of perforations in pipe are
Clean or replace perforated pipe.
plugged
plugged with debris and sediment
0
M'S
Not discharging
Visual evidence of water discharging at
Trench must be redesigned or
water property
concentrated points along trench (normal
rebuilt to standard. Elevation of lip
0
condition is a "sheet flow" of water along
of trench should be the same (flat)
trench). Intent is to prevent erosion
at all points.
damage.
M,S
Water flows out
Maintenance person observes water
Facility must be rebuilt or
0
top of "distributor"
flowing out during any strom less than the
redesigned to standards. Pipe is
catch basin
design stone or it is causing or appears
probably plugged or damaged and
likely to cause damage.
needs replacement.
M'S
Receiving area
Water in receiving area is causing or has
Stabilize slope with grass or other
over-saturated
potential of causing landslide.
vegetation, or rock if condition is
severe. Contact a professional
engineer for evaluation.
If you are unsure whether a problem exists, please contact a Professional Engineer.
Comments:
KAY:
A=Annual (March or April preferred)
M=Monthly (see schedule)
S=After major storms (use 1-inch in 24 hours as a guideline)
Storm, Water Easement and Maintenance Agreement
Western Steel, Inc.
Page 12 of 17
ATTACHMENT "A" (CONTINUED)
Maintenance Checkiist for Fencing/Shrubbery Screen/Other Landscaping
Frequency
Drainage
/
Problem
Conditions to Check For
Conditicns That Should
system
✓
Exist
Feature
M
General
Missing or
Any defect in the fence or screen that permits
Fence is mended or
broken
easy entry to a facility.
shrubs replaced to form a
parts/dead
solid barrier to entry,
shrubbery
M's
Erasion
Erosion has resulted in an opening under a
Replace sail under fence
fence that allows entry by people or pets.
so that no opening
exceeds 4 inches in
height.
M
Unruly
Shrubbery is growing out of control or is
Shrubbery is trimmed an
vegetation
infested with weeds.
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 of plumb.
A
Top rails bent more than 6 inches.
Top rail free of bends
greater than 1 inch.
A
Any part of fence (including pasts, top rails, and
Fence is aligned and
fabric) more than 1 foot out of design alignment.
meets design standards.
A
Missing or loose tension wire.
Tension wire in place and
holding fabric.
A
Missing or loose barbed wire that is sagging
Barbed wire in place with
more than 2-1/2 inches between posts.
less than 314-inch sag
between posts.
A
Extension arm missing, broken, or bent out of
Extension arm in place
shape more than 1-1/2 inches.
with no bends larger than
314 inch.
A
Deteriorated
Part or parts that have a rusting or scaling
Structurally adequate
paint or
condition that has affected structural adequacy.
posts or parts with a
protective
uniform protective
coating
coating.
M
Openings in
Openings in fabric are such that an &inch
No openings in fabric.
fabric
diameter ball could fit through.
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)
Storm Water Easement and Maintenance Agreement
Western Steel, Inc.
Page 13 of 17
ATTACHMENT "A" (CONTINUED)
0
Q
Maintenance Checklist for Conveyance Systems (Pipes, Ditches, and Swales)
Frequency
Drainage
System
Problem
Conditions to Check For
Conditions That Should Exist
Feature
M,S
Pipes
Sediment iii debris
Accumulated sediment that exceeds
Pipe cleaned of all sediment and
20% of the diameter of the pipe.
debris.
M
Vegetation
Vegetation that reduces free
All vegetation removed so water
movement of water through pipes.
flows freely through pipes.
A
Damaged (rusted, bent, or
Protective coating is damaged; rust is
Pipe repaired or replaced.
crushed)
causing more than 50% deterioration
to any part of pipe.
M
Any dent that significantly impedes
Pipe repaired or replaced.
flow (i.e., decreases the cross section
area of pipe by more than 20%).
"
M
Pipe has major cracks or tears
Pipe repaired or replaced.
allowing groundwater leakage.
M'S
Open
Trash if debris
Dumping of yard wastes such as
Remove trash and debris and
ditches
grass clippings and branches into
dispose as prescribed by the
basin. Unsightly accumulation of
County.
nondegradable materials such as
glass, plastic, metal, foam, and
coated paper.
M
Sediment buildup
Accumulated sediment that exceeds
Ditch cleaned of all sediment and
20% of the design depth.
debris so that it matches design
A
Vegetation
Vegetation (e.g., weedy shrubs or
Water flows freely through dit.
saplings) that reduces free
Grassy vegetation should be left
movements of water through ditches.
alone.
M
Erosion damage to slopes
See Ponds Checklist.
See Ponds Checklist
A
Rock lining out of place or
Maintenance person can see native
Replace rocks to design standard.
missing (if applicable)
soil beneath the rock lining.
Varies
Catch
See Catch Basins Checklist
See Catch Basins Checklist
basins
M,S
Swales
Trash & debris
See above for Ditches.
See above for Ditches.
M
Sediment buildup
See above for Ditches.
Vegetation may need to be
replanted after cleaning.
M
Vegetation not growing or
Grass cover is sparse and seedy or
Aerate sails and reseed and mul
overgrown
areas are overgrown with woody
bare areas. Maintain grass height
vegetation,
at a minimum of 6 inches for best
stormwater treatment Remove
woody growth, , ntour, and
reseed as necessary.
M,S
Erosion damage to slopes
See Ponds Checklist
See Ponds Checl'rsL
M
Conversion by homeowner
Swale has been filed in or blocked by
If possible, speak with homeowne
to incompatible use
shed, woodpile, shrubbery, etc.
and request that swale area be
restored. Contact the County to
report problem if not rectified
voluntarily.
Storm Water Easement and Maintenance Agreement
Western Steel, Inc.
Page 14 of 17
A
Swab does not drain
Water stands In swab or flow velocity
A survey may be needed to check
is very slow. Stagnadon occurs.
grades. Grades need to be in 1-
5% range It possible. If grade is
less than I% underdrains may
need to be I tstalled.
If you are unsure whether a problem exists, please contact a Professional Engineer.
Comments:
C
Lfl
W.
A=Annual (March or April preferred)
M=Monthly (see schedule)
S=After major storms (use 14nch in 24 Hours as a guideline)
Storm Water Easement and Maintenance Agreement
Western Steel, Inc.
Page 15 of 17
ATTACHMENT "A" (CONTINUED)
Maintenance Checldist for Grounds (Landscaping)
t
Frequency
Drainage
System
Problem
Conditions to Check For
Conditions That Should Exist
Feature
M
General
Weeds (nonpoisonous)
Weeds growing in more than 20% of the
Weeds present in less than 5% of
landscaped area (trees and shrubs
the landscaped area.
only).
M
Insect hazard
Any presence of poison ivy or other
No poisonous vegetation or insect
poisonous vegetation or insect nests.
nests present in lanscaped area.
M,S
Trash or litter
See Ponds Checklist.
See Ponds Checklist
M's
Erosion of Ground
Noticeable rills are seen in landscaped
Causes of erosion are identified
Surface
areas.
and steps 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 that
Trim trees/shrubs to restore
shrubs
are split or broken which affect more
shape. Replace trees/shrubs with
than 25% of the total foliage of the tree
severe damage.
or shrub.
M
Trees or shrubs that have been blown
Replant tree, inspecting for injury
down or knocked over.
to stem or roots. Replace if
severely damaged.
A
Trees or shrubs which are not
Place stakes and rubber-coated
adequately supported or are leaning
ties around young trees/shrub-- fnr
over, causing excosure of the roots.
support
If you are unsure whether a problem exists, please contact a Professional Engineer.
Comments:
K:
A=Annual (March or April preferred)
M=Monthly (see schedule)
S=After major storms (use 1-inch in 24 hours as a guideline)
Storm Water Easement and Maintenance Agreement
Western Steel, Inc.
Page 16 of 17
STORMWATER MANUAL FOR THE PUCET SOUND BASIN
IV-2.4.8 PROFESSIONAL SERVICES
SIC: 6000, 7000 and 5000, not listed elsewhere
DESCRIPTION: Included here are the remaining service businesses including theaters,
hotels/motels, finance, banking, hospitals and medical services, nursing homes,
schools and universities, and legal, financial and engineering services.
MATERIALS USED AND WASTES GENERATED: The primary concern is runoff from parking
areas. Stormwater from parking lots will contain undesirable concentrations of oil
and grease, suspended particulates, and metals such as lead, cadmium and zinc. It
will also contain the organic by-products of engine combustion. Some also produce
Dangerous Wastes, for example, hospitals, nursing homes and other medical services.
These materials are stored within the building until disposal.
Source Control BMPs: See BMPs 51.20, S1.30, 51.50, 51.80, 52.00 and S2.20 in
Chapter IV-4 to determine appropriate actions.
Regulatory Requirements: See R.1, R.2, R.3, and R.10 in Chapter IV-S»
Stcrmnwater Treatment BMPs: Source control BMPs such as good housekeeping should
always be used to control stormwater pollution. Stormwater from parking lots and
outside areas shall be treated using infiltration and/or detention as detailed in
Volume III, Runoff Control. Those practices shall be used in combination with other
appropriate pre-treatment and treatment BMPs such as biofiltration, pre-settling
basins and oil/water separators or equivalent (see Volume III).
Stormwater from rooftops may be discharged to the storm drain below the treatment
system as long as the drainage requirements of the local. Public Works Department are
met. If there is no stormwater drainage system (storm sewer) to discharge to,
runoff from rooftops should be disposed of through the use of an infiltration ?
facility wherever possible (see BMPs RI.15 and RI.16 in Chapter III-3 of the Runoff
Control Volume).
two