HomeMy WebLinkAbout20200226000964 STORMWATER EASEMENT AND MAINTENANCE AGREEMENT N`N 1tb'-/- 5Llefl
tiII1t 111.1
lI11Ii LIII 11111 IiL Illil Illil 1111111 1111 III III
.
20200226000964
Return Address: EASEMENT Rec:$234.00
City of Auburn 212812020 2:51 PM
KING COUNTY,WA
City Clerk
25 West Main
Auburn,WA 98001
FIRST AMERICAN """CC, 1
Above this line reserved for recording information.
STORM WATER EASEMENT AND MAINTENANCE AGREEMENT
Reference#(if applicable):
Grantor/Borrower: Auburn School District#408
Grantee/Assignee/Beneficiary: City of Auburn
Legal Description/STR: 18-21-05
Assessor's Tax Parcel ID#: 182105-9082
THIS EASEMENT AND AGREEMENT made and entered into this IDS" day of
•Vdiartl ary , 2020, by and between the City of Auburn, a municipal corporation
of King County, Washington, hereinafter referred to as "CITY" and Auburn School District
#408 hereinafter referred to as "PROPERTY OWNER".
WHEREAS, PROPERTY OWNER has applied for certain permits with the CITY
or the construction of improvements for Auburn High School located at 711 E Main St,
Auburn, WA 98002, which create impervious surface; and
WHEREAS, the PROPERTY OWNER and the CITY desire that the elements of a
storm management plan be implemented and maintained to provide adequate performance
for controlling both the quantity and quality of storm drainage; and
WHEREAS, for maintenance of storm system elements, it is necessary to have
appropriate right-of-way to bring in equipment to conduct maintenance functions; and
WHEREAS, maintenance requirement is a covenant running with the land and
binding upon all heirs, successors and assigns of both parties; and
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
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 1 of 28 RECORDING REQUESTED BY
FIRST AMERICAN TITLE COMPANY
A8 AN ACOOIY^ ATIO44 ONLY
WHEREAS, the parties are both desirous of permitting inspection of the storm
management plan elements to make certain that they are functioning properly and for
purposes of determining the appropriate repairs.
NOW, THEREFORE, BASED UPON MUTUAL COVENANTS TO BE
DERIVED THE PARTIES AGREE AS FOLLOWS:
Section 1,EASEMENT
PROPERTY OWNER hereby provides a non-exclusive easement to the City for
access, inspection, and maintenance for the purposes of this Agreement and the attached
Storm Water Pollution Prevention Plan, over, under and on that real estate described in
Exhibit "A" and depicted in Exhibit "B" 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 No. FAC12-0007, 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 depicted attached as Exhibit "A" & "B" and incorporated herein by
this reference, and shall be a benefit to the City Storm Drainage 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 and the Maintenance and Operation
Manual included as "Exhibit C" and incorporated herein by this reference as if set out in
full. The PROPERTY OWNER does hereby agree that the CITY may enter onto the
property of the PROPERTY OWNER via the easement described above to inspect and
perform necessary maintenance if, after the PROPERTY OWNER is given notice to
maintain, the PROPERTY OWNER fails to maintain. Further, the PROPERTY OWNER
agrees the CITY may enter onto the property of PROPERTY OWNER via the easement
described above to perform emergency maintenance in the event of failure of the storm
management plan elements which might result in adverse impacts(s) on public facilities or
private facilities of other property owners. In both events the PROPERTY OWNER agrees
to reimburse the CITY for the costs incurred by the CITY in maintaining the storm system.
Should the CITY incur attorney's fees and/or costs in enforcing the agreement and/or in
maintaining or collecting maintenance fees, the PROPERTY OWNER agrees to pay
reasonable attorney's fees and all costs incurred by the CITY.
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 2 of 28
The Storm System Includes the following BMP's:
• Infiltration Facility
• Control Structure
• Catch Basins
• Stormfilters
• Baffle Oil/Nature Separators (API Type)
• Catch Basin Inserts
• Bioretention Rain Gardens
• Compost Amended Soil
• Pervious Pavement
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 and/or the possibility of incarceration in addition
to the fees for maintenance should violations occur.
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 3 of 28
SIGNATORY—MUNICIPAL CORPORATE
IN WITNESS WHEREOF the Grantor has executed these presents this
OA- day of K�':Jn i lVA. , 2020.
AUBURN SCHOOL DISTRICT NO. 408,
a municipal corporation of the State of Washington
2 ( Io �l2-
Alan Spicciati Date
Superintendent
STATE OF WASHINGTON )
) ss
COUNTY OF KING ) Nall
.I certify that I know or have satisfactory evidence that RIGLI all
is the person who appeared before me, and said person acknowledged that they signed this
instrument, on oath stated that they were authorized to execute the instrument and
acknowledged it as the Superintendent of the AUBURN SCHOOL DISTRICT NO. 408,
a municipal corporation, to be the free and voluntary act of such party for the uses and
purposes mentioned in this instrument.
Dated a. \0 - a0a-c•
,.\\‘‘‘‘‘‘ili„
•{ HAR ►��
,,,,,,,,,,,,,,44. ��; `y
r. '�� ��►R '�► /� Notary Public in and for the State of Washington
S :v 20257 = Residing at 54)t1A/18 y LA. , W
(1) • .e1/s�\o 0 s My appointment expires
R•2�l• 22-
O111%iltt W AS�`a��=
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 4 of 28
EXHIBIT A
(LEGAL DESCRIPTION)
BEGINNING AT A POINT WHICH IS 691.97 FEET EAST AND 50 FEET NORTH OF THE S.W.
CORNER OF THE S.E.OF THE N.W.OF SECTION 18.TOWNSHIP 21 NORTH.RANGE 5 EAST.W M
IN KING COUNTY. WASHINGTON;
THENCE NORTH 02°28'49" WEST ALONG THE EAST BOUNDARY UNE OF THE WASHINGTON
SCHOOL TRACT A DISTANCE OF 575.81 FEET TO THE CENTERLINE OF VACATED SECOND
STREET N.E.,;
THENCE SOUTH 87°30 39" WEST A DISTANCE OF 333.91 FEET TO THE EASTERLY MARGIN OF
"E STREET N.E.;
THENCE NORTH 00°51'20" EAST ALONG SAID EASTERLY MARGIN AND ALONG THE WEST
LINE OF LANGE'S FIRST ADDITION TO AUBURN.ACCORDING TO THE PLAT THEREOF
RECORDED IN VOLUME 25 OF PLATS.AT PAGE 36.RECORDS OF KING COUNTY,
WASHINGTON.A DISTANCE OF 280.58 FEET TO AN ANGLE POINT IN SAID MARGIN;
THENCE CONTINUNG ALONG SAC MARGIN NORTH 00°50'02" EAST A DISTANCE OF 254.07
FEET TO THE SOUTHERLY MARGIN OF 4TH STREET NE AND TO THE N.W CORNER OF BLOCK
3 OF SAID PLAT.
THENCE NORTH 87°31 25" EAST ALONG SAID SOUTHERLY MARGIN A DISTANCE OF 187.17
FEET TO AN ANGLE POINT IN SAID MARGIN,
THENCE CONTINUING ALONG SAID MARGIN NORTH 86°47'04"EAST A DISTANCE OF 637.46
FEET TO AN ANGLE POINT IN SAID MARGIN
THENCE CONTINUING ALONC SAID MARGIN NORTH 87°32'53" EAST A DISTANCE OF 307.22
FEET TO THE EAST LINE OF THE WEST HALF OF LOT 9.BLOCK 5.POPIARWOOD ADDITION
TO AUBURN.ACCORDING TO THE PLAT THEREOF RECORDED IN VOLUME 32 OF PLATS.
PAGE 5. RECORDS OF KING COUNTY.WASHINGTON;
THENCE SOUTH 00°42'30" WEST ALONG THE EAST LINE OF THE WEST HALF OF LOTS 9 THRU
16.BLOCK 3,AND ALONG THE EAST LINE OF THE WEST HALF OF LOTS 13 THRU 21.BLOCK 2
OF SAID PLAT A DISTANCE OF 998.25 FEET TO THE SOUTH UNE OF LOT 21;
THENCE SOUTH 87°31'19"WEST ALONG SAID SOUTHERLY LINE AND ITS WESTERLY
EXTENSION A DISTANCE OF 72.58 FEET TO AN ANGLE POINT;
THENCE SOUTH 87°31'40"WEST A DISTANCE OF 16.26 FEET TO THE S.E.CORNER OF LOT 4.
BLOCK 1.OF SAID PLAT;
THENCE SOUTH 00°42'27"WEST ALONG THE WESTERLY MARGIN OF"I"STREET NE AND
ALONG THE EAST LINE OF LOT 3,BLOCK 1,OF SAID PLAT,TO THE S.E.CORNER THEREOF
AND TO THE NORTHERLY MARGIN OF MAIN STREET EAST A DISTANCE OF 120.96 FEET;
THENCE SOUTH 87°31'34" WEST ALONG THE SOUTH LINE OF SAID BLOCK I AND ALONG
SAID NORTHERLY MARGIN A DISTANCE OF 221.88 FEU TO AN ANGLE POINT IN SAID
MARGIN;
THENCE CONTINUING ALONG SAID MARGIN SOUTH 87°30'40"WEST A DISTANCE OF 455.93
FEET TO THE POINT OF BEGINNING.
TOGETHER WITH THOSE PORTIONS OF GOVERNMENT LOTS 7 AND 8,SECTION 18,TOWNSHIP
21 NORTH.RANGE 5 EAST.W M.DESCRIBED AS FOLLOWS:
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 5 of 28
EXHIBIT A
(LEGAL DESCRIPTION CONTINUED)
BEGINNING AT THE S.W.CORNER OF LOT 3,BLOCK 2,SAID LANGE'S FIRST ADDITION TO
AUBURN,SAID POINT BEING ON THE NORTHERLY MARGIN OF 4TH STREET N.E..
THENCE NORTH 02°17'21"WEST ALONG THE WEST LINE OF SAID LOT A DISTANCE OF 105.00
FEET TO THE N.W.CORNER THEREOF;
THENCE NORTH 87°31'24" EAST ALONG THE NORTH LINE OF LOTS 3 AND 4 A DISTANCE OF
91.51 FEET TO THE N.E.CORNER OF SAID LOT 4.
THENCE NORTH 02°31'15" WEST A DISTANCE OF 15.14 FEET,MORE OR LESS,TO THE SOUTH
LINE OF SAID GOVERNMENT LOT 8.
THENCE NORTH 87°30'06"EAST ALONG SAID LINE A DISTANCE OF 62.22 FEET.
THENCE NORTH 00°49'06"EAST A DISTANCE OF 661.92 FEET,MORE OR LESS.TO THE NORTH
LINE OF THE SOUTH HALF OF SAID GOVERNMENT LOT 8;
THENCE NORTH 87°33'06"EAST ALONG SAID NORTH LINE A DISTANCE OF 400.65 FEET;
THENCE SOUTH 00°49'06" WEST A DISTANCE OF 661.92 FEET TO THE SOUTH LINE OF SAID
GOVERNMENT LOT 8;
THENCE NORTH 87°30'06"EAST ALONG SAID SOUTH LINE A DISTANCE OF 157.93 FEET,MORE
OR LESS,TO THE WESTERLY MARGIN OF'H" STREET N.E.;
THENCE SOUTH 00°52'47"WEST ALONG SAID MARGIN A DISTANCE OF 112.64 FEET,MORE OR
LESS,TO THE NORTHERLY MARGIN OF 4TH STREET N.E.;
THENCE SOUTH 86°47'04" WEST ALONG SAID MARGIN A DISTANCE OF 614.35 FEET TO AN
ANGLE POINT IN SAID MARGIN,SAID POINT ALSO BEING ALONG THE SOUTH LINE OF
BLOCK 2 OF SAID LANGE'S FIRST ADDITION TO AUBURN;
THENCE CONTINUING ALONG SAID MARGIN AND SAID SOUTH LINE SOUTH 87°31'25" WEST
A DISTANCE OF 91.77 FEET TO THE BEGINNING.
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 6 of 28
. .
Exhibit B
OPERATIONS AND MAINTENANCE EXHIBIT
en\
4
NTS
- - / - - - - - - -
4TH STREET NE
i 1 °S Si
PROPERTY CATCH BASIN(TYP)
•
BOUNDARY • 4
•
(TYP) * '
1 STORM "41------STORM LINE(TYP)
o = _ = LINE(TYP)
,:'-':"-'":"
3 .. YAC' .,.' F:4:.s
.fie S a
POROUS
CONCRETE
PAVING(TYP)' l'' '''.;,--';',-:,'' _A . -, 4
•
PROPOSED CATCH BASIN(TYP)
IIIr '
w
Z I t
" � STORMTEC
H
I, ` CHAMBERSW ill (TYP)
L ,,w
i , [pi: mil
1 ii r IiRt`9'.�`u 3t'ai>.
I III
�na> st
Ado' t
<illa 08
Itirn lag 17
1:43
�p s 1 e,71.'. 'dk 4Re Aw6 t A FN
COUGHLINPORTERLUNDEEN 800 4TH STREET NE
STRUCTURAL CIVIL SEISMIC ENGINEERING AUBURN, WA 98002
801 SECOND AVENUE,SUITE 900 (206)343-0460 PAGE I OF 4
SEATTLE,WA 98104 www.cplinc.com
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 7 of 28
Exhibit B
OPERATIONS AND MAINTENANCE EXHIBIT
41110.,
NTS
4TH STREET NE
SD—
-
4101-1,4
- - SD —
EX STORM LINE(TYP) STORM LINE(TYP)
. PROPERTY BOUNDARY(TYP)
POROUS CONCRETE PAVING(TYP)
At}k4�dskai:,S'W.
STORM LINE(TYP)
STORMTECH CHAMBERS(TYP)
CATCH BASIN(TYP)
EX STORM LINE(TYP)
I
0
i
COUGHLINPORTERLUNDEEN 800 4TH STREET NE
STRUCTURAL CIVIL SEISMIC ENGINEERING AUBURN, WA 98002
801 SECOND AVENUE,SUITE 900 (206)343-0460 PAGE 2 OF 4
SEATTLE,WA 98104 www.cplinc.com
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 8 of 28
Exhibit B
OPERATIONS AND MAINTENANCE EXHIBIT
.7Ls ! . 9.D . ,...
SD.
STORM LINE
(TYP) 7
I 4 II
I IN rs ,
CATCH BASIN _
(TYP) I
w 1
ZI
IUJ
I IS ID o
, r..1 _ 1
....I!!
STORMTECH
I CHAMBERS .... .-"L
I o (TYP)
1
ij
r "--,.....\..., ' ,,,,,,,,,,
ix-
1 \V 1 ;____ I I
PROPERTY
I 0,5, I,
o I
BOUNDARY
If)
O,
I - - g
_ E MAIN STREET ,-
OS III SD SD -
'. 1
COUGH LINPORTERLUNDEEN 800 4TH STREET NE
STRUCTURAL CIVIL SEISMIC ENGINEERING AUBURN, WA 98002
801 SECOND AVENUE,SUITE 900 WA 98104 (206)343-0460 PAGE 3 OF 4
SEATTLE, www.cplinc.com
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 9 of 28
Exhibit B
OPERATIONS AND MAINTENANCE EXHIBIT
STORMTECH
CHAMBERS
(TYP)
NTS STORM LINE , /
YW J
(TYP)
PROPERTY
BOUNDARY
(TYP)
CATCH BASIN 0
(TYP) s
STORM LINE /
(TYP)
)11 oN
E MAIN STREET
as as as _ , as
I F I
COUGHLINPORTERLUNDEEN 800 4TH STREET NE
STRUCTURAL CIVIL SEISMIC ENGINEERING AUBURN, WA 98002
801 SECOND AVENUE,SUITE 900 (206)343-0460 PAGE 4 OF 4
SEATTLE,WA 98104 www.cplinc.com
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 10 of 28
EXHIBIT 'C'
STORM WATER POLLUTION PREVENTION
MAINTENANCE and OPERATION SCHEDULE
for
Auburn High School
SEPA NO. N/A
FAC NO. 408
Site Address:
The project is located in Section 18-Township 21 - Range 5 East, W.M., 800
4th Street Northeast, Auburn, WA 98002.The tax parcel number is
1821059082.
Introduction:
This storm drainage technical information report has been prepared to
address the City of Auburn's site development and storm drainage
requirements for the proposed Auburn High School located at 800 4th Street
Northeast, Auburn, WA 98002. The site has an area of approximately 23.41
and is currently consists of a combination of one and two-story high school
buildings, play fields, and associated storm sewer, sanitary sewer, gas, power,
and communications/franchise utilities. Site drainage patterns consist of
manmade drainage systems which tie in to two separate City storm mains
which tie together onsite.
The site is proposing onsite detention facilities to match pre-developed
(forested) site conditions. Stormwater will be routed to these facilities via man-
made conveyance systems and subsequently discharge to the City storm
mains onsite. Water quality for the majority of pollution generating impervious
surfaces will be treated by onsite infiltration, with a small area being treated by
rain gardens. Flow control and water quality facilities will be designed and
constructed in accordance with the 2009 City of Auburn Surface Water
Management Manual (SWMM). The fully developed site will be roughly 80%
impervious area.
According to the City of Auburn's Construction Standards for storm water
management, the city requires storm water quantity and quality control to all
proposed developments. We have proposed to collect all of the storm water
runoff from the landscaped, building and pavement areas in a series of catch
basins. This water will be conveyed by storm drainage pipe to an area of
porous pavement, a field base course gallery, stormtech chambers, or a rain
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 11 of 28
garden. Here the storm water will be released into existing 36" and 30" storm
mains and is routed through the site and combined into a 42" main onsite. The
42" main leaves the site heading east on 4th St NE and continues until
reaching a point greater than 1/4 mile downstream of the project site.
Plan Goal:
The specific purpose for the storm water facility is to minimize pollution that is
typically associated with modern development. In general, pollution from
motor vehicles and pollution generated from erosion. Attached to this
narrative is a maintenance manual, which offers guidelines to the owner for
storm water facility maintenance.
Prevention BMP'S:
The catch basins shall have stenciled on them "DUMP NO WASTE—DRAINS
TO STREAM." The owner shall be responsible for sweeping the lot, installing
storm drainage stenciling and provide spill control procedures. In case of spill
call DOE at 1-425-649-7000. The catch basins, detention/wetpond, and
control structures will be visually inspected for accumulation of debris and silt
and will be maintained as required by this pollution prevention plan and
attachments.
• Maintenance Standards for Drainage Facilities (from the City of Auburn
Surface Water Management Manual, November 2009)
No. 2 - Infiltration
No. 4 — Control Structure/Flow Restrictor
No. 5 — Catch Basins
No. 15 — Stormfilters
No. 16 — Baffle Oil/Nature Separators (API Type)
No. 18 — Catch Basin Inserts
No. 20 — Bioretention Rain Gardens
No. 22 — Compost Amended Soil
No. 24 — Pervious Pavement
Treatment BMP'S:
Basic treatment through porous paving, field base course galleries, and
stormtech galleries have been proposed to treat runoff for conventional
pollutants. The pavement was designed to treat 91% of the 2-year storm
event (water quality storm) for water quality treatment. In addition, the
treatment was designed to match forested condition flows leaving the site.
Inspection/Maintenance:
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 12 of 28
Regular inspections of the drainage facilities should be carried out twice per
year, in the spring and fall. The responsible party should keep records of
these inspections available for review by the City. Additional inspections may
be required after severe storms.
Routine maintenance of the site will include mowing, care of landscaping and
the removal of trash and debris from the drainage system. The parking lots
and driveways should be kept clean and in repair. Events such as major
storms or heavy winds will require immediate inspections for damages.
To ensure proper water quality and treatment, the basic treatment systems
must be properly maintained. Be careful to avoid introducing landscape
fertilizer to receiving waters or groundwater. If wetpond side slopes become
eroded over 2" deep, stabilize by using appropriate erosion control measures
(e.g., rock reinforcement, planting of grass, compaction).
Catch basins shall be cleaned when sump is 1/3' full of sediment or debris.
Person of Responsibility:
Auburn School District
915 4th Street NE
Auburn, WA 98002
253/931-4900
Design Engineer:
Kyle Malaspino
Coughlin Porter Lundeen
413 Pine Street Suite 300
Seattle, WA 98101
206/343-0460
Plan and/or Information Updates:
The City of Auburn Storm Drainage Utility section is to review and approve any
changes to this Storm Water 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 Storm Drainage Utility section.
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 13 of 28
INSPECTION/MAINTENANCE CHECKLIST
STRUCTURE DATE OF INSPECTION/MAINTENANCE
Results/
Maintenance Date
Inspection
All Catch Basins Results
Maintenance
Done
Bioretention Rain Inspection
Gardens Results
Maintenance
Done
Inspection
Conveyance Pipes Results
Maintenance
Done
Flow Control Inspection
Structure Results
Maintenance
Done
Pervious Pavement Inspection
Results
Maintenance
Done
Stormfilters Inspection
Results
Maintenance
Done
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 14 of 28
Maintenance Standards for Drainage Facilities:
The facility-specific maintenance standards contained in this section are
intended to be conditions for determining if maintenance actions are required
as identified through inspection. They are not intended to be measures of the
facility's required condition at all times between inspections. In other words,
exceeding these conditions at any time between inspections and/or
maintenance does not automatically constitute a violation of these standards.
However, based upon inspection observations, the inspection and
maintenance schedules shall be adjusted to minimize the length of time that a
facility is in a condition that requires a maintenance action.
No.2—Infiltration
Maintenance Defect Conditions When Maintenance Is Results Expected
Component Needed When Maintenance Is
Performed
General Trash& Debris See"Detention Ponds"(No. 1). See"Detention Ponds"
(No. 1).
Poisonous/Noxious See"Detention Ponds"(No. 1). See"Detention Ponds"
Vegetation (No. 1).
Contaminants and See"Detention Ponds"(No. 1). See"Detention Ponds"
Pollution (No. 1).
Rodent Holes See"Detention Ponds"(No. 1). See"Detention Ponds"
(No. 1).
Storage Area Sediment Water ponding in infiltration pond after Sediment is removed
rainfall ceases and appropriate time and/or facility is cleaned
allowed for infiltration. so that infiltration system
works according to
(A percolation test pit or test of facility design.
indicates facility is only working at 90%of
its designed capabilities. If two inches or
more sediment is present, remove).
Filter Bags(if Filled with Sediment Sediment and debris fill bag more than 1/2 Filter bag is replaced or
applicable) and Debris full. system is redesigned.
Rock Filters Sediment and By visual inspection, little or no water flows Gravel in rock filter is
Debris through filter during heavy rainstorms. replaced.
Side Slopes of Erosion See"Detention Ponds"(No. 1). See"Detention Ponds"
Pond (No. 1).
Emergency Tree Growth See"Detention Ponds"(No. 1). See"Detention Ponds"
Overflow Spillway (No. 1).
and Berms over 4
feet in height.
Piping See"Detention Ponds"(No. 1). See"Detention Ponds"
(No. 1).
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 15 of 28
No. 2—Infiltration
Maintenance Defect Conditions When Maintenance Is Results Expected
Component Needed When Maintenance Is
Performed
Emergency Rock Missing See"Detention Ponds"(No. 1). See"Detention Ponds"
Overflow Spillway (No. 1).
Erosion See "Detention Ponds"(No. 1). See "Detention Ponds"
(No. 1).
Pre-settling Facility or sump 6"or designed sediment trap depth of Sediment is removed.
Ponds and Vaults filled with Sediment sediment.
and/or debris
No.4—Control Structure/Flow Restrictor
Maintenance Defect Condition When Maintenance is Needed Results Expected
Component When Maintenance
is Performed
General Trash and Debris Material exceeds 25%of sump depth or 1 Control structure
(Includes Sediment) foot below orifice plate. orifice is not blocked.
All trash and debris
removed.
Structural Damage Structure is not securely attached to Structure securely
manhole wall. attached to wall and
outlet pipe.
Structure is not in upright position (allow up Structure in correct
to 10%from plumb). position.
Connections to outlet pipe are not watertight Connections to outlet
and show signs of rust. pipe are watertight;
structure repaired or
replaced and works
as designed.
Any holes, other than designed holes, in the Structure has no
structure. holes other than
designed holes.
Cleanout Gate Damaged or Missing Cleanout gate is not watertight or is missing. Gate is watertight
and works as
designed.
One maintenance person cannot move up Gate moves up and
and down gate. down easily and is
watertight.
Chain/rod leading to gate is missing or Chain is in place and
damaged. works as designed.
Gate is rusted over 50%of its surface area. Gate is repaired or
replaced to meet
design standards.
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 16 of 28
No.4—Control Structure/Flow Restrictor
Maintenance Defect Condition When Maintenance is Needed Results Expected
Component When Maintenance
is Performed
Orifice Plate Damaged or Missing Control device is not working properly due Plate is in place and
to missing, out of place, or bent orifice plate. works as designed.
Obstructions Any trash, debris, sediment, or vegetation Plate is free of all
blocking the plate. obstructions and
works as designed.
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 designed.
Manhole See"Closed See "Closed Detention Systems" (No. 3). See"Closed
Detention Systems" Detention Systems"
(No. 3). (No. 3).
Catch Basin See"Catch Basins" See"Catch Basins" (No. 5). See "Catch Basins"
(No. 5). (No. 5).
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 17 of 28
No. 5—Catch Basins
Maintenance Defect Conditions When Maintenance is Needed Results Expected When
Component Maintenance is
performed
General Trash& Trash or debris which is located immediately No Trash or debris
Debris in front of the catch basin opening or is located immediately in
blocking inletting capacity of the basin by front of catch basin or on
more than 10%. grate opening.
Trash or debris(in the basin)that exceeds 60 No trash or debris in the
percent of the sump depth as measured from catch basin.
the bottom of basin to invert of the lowest
pipe into or out of the basin, but in no case
less than a minimum of six inches clearance
from the debris surface to the invert of the
lowest pipe.
Trash or debris in any inlet or outlet pipe Inlet and outlet pipes free
blocking more than 1/3 of its height. of trash or debris.
Dead animals or vegetation that could No dead animals or
generate odors that could cause complaints vegetation present within
or dangerous gases(e.g., methane). the catch basin.
Sediment Sediment(in the basin)that exceeds 60 No sediment in the catch
percent of the sump depth as measured from basin.
the bottom of basin to invert of the lowest
pipe into or out of the basin, but in no case
less than a minimum of 6 inches clearance
from the sediment surface to the invert of the
lowest pipe.
Structure Top slab has holes larger than 2 square Top slab is free of holes
Damage to inches or cracks wider than 1/4 inch. and cracks.
Frame and/or
Top Slab (Intent is to make sure no material is running
into basin).
Frame not sitting flush on top slab, i.e., Frame is sitting flush on
separations of more than 3/4 inch of the the riser rings or top slab
frame from the top slab. Frame not securely and firmly attached.
attached
Fractures or Maintenance person judges that structure is Basin replaced or
Cracks in unsound. repaired to design
Basin Walls/ standards.
Bottom
Grout fillet has separated or cracked wider Pipe is regrouted and
than 1/2 inch and longer than 1 foot at the secure at basin wall.
joint of any inlet/outlet pipe or any evidence
of soil particles entering catch basin through
cracks.
Settlement/ If failure of basin has created a safety, Basin replaced or
Misalignment function, or design problem. repaired to design
standards.
Vegetation Vegetation growing across and blocking No vegetation blocking
more than 10%of the basin opening. opening to basin.
Vegetation growing in inlet/outlet pipe joints No vegetation or root
that is more than six inches tall and less than growth present.
six inches apart.
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 18 of 28
No. 5—Catch Basins
Maintenance Defect Conditions When Maintenance is Needed Results Expected When
Component Maintenance is
performed
Contamination See"Detention Ponds"(No. 1). No pollution present.
and Pollution
Catch Basin Cover Not in Cover is missing or only partially in place. Catch basin cover is
Cover Place Any open catch basin requires maintenance. closed.
Locking Mechanism cannot be opened by one Mechanism opens with
Mechanism maintenance person with proper tools. Bolts proper tools.
Not Working into frame have less than 1/2 inch of thread.
Cover Difficult One maintenance person cannot remove lid One maintenance person
to Remove after applying normal lifting pressure. can remove cover.
(Intent is keep cover from sealing off access
to maintenance.)
Ladder Ladder Rungs Ladder is unsafe due to missing rungs, not Ladder meets design
Unsafe securely attached to basin wall, standards and allows
misalignment, rust, cracks, or sharp edges. maintenance person safe
access.
Metal Grates Grate opening Grate with opening wider than 7/8 inch. Grate opening meets
(If Applicable) Unsafe design standards.
Trash and Trash and debris that is blocking more than Grate free of trash and
Debris 20% of grate surface inletting capacity. debris.
Damaged or Grate missing or broken member(s) of the Grate is in place and
Missing. grate. meets design standards.
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 19 of 28
No. 15-STORMFILTERTM
Maintenance Defect Condition When Maintenance is Results Expected When
Component Needed Maintenance is Performed
Below Ground Sediment Sediment depth exceeds V4 inch. No sediment deposits that
Vault Accumulation on would impede permeability of
Media. the compost media.
Sediment Sediment depth exceeds 6-inches in first No sediment deposits in vault
Accumulation in chamber. bottom of first chamber.
Vault
Trash/Debris Trash and debris accumulated on Trash and debris removed from
Accumulation compost filter bed. the compost filter bed.
Sediment in When drain pipes, clean-outs, become Sediment and debris removed.
Drain full with sediment and/or debris.
Pipes/Clean-
Outs
Damaged Pipes Any part of the pipes that are crushed or Pipe repaired and/or replaced.
damaged due to corrosion and/or
settlement.
Access Cover Cover cannot be opened; one person Cover repaired to proper
Damaged/Not cannot open the cover using normal working specifications or
Working lifting pressure, corrosion/deformation of replaced.
cover.
Vault Structure Cracks wider than 1/2-inch or evidence Vault replaced or repairs made
Includes Cracks of soil particles entering the structure so that vault meets design
in Wall, Bottom, through the cracks, or specifications and is structurally
Damage to maintenance/inspection personnel sound.
Frame and/or determine that the vault is not
Top Slab structurally sound.
Cracks wider than 1/2-inch at the joint of Vault repaired so that no cracks
any inlet/outlet pipe or evidence of soil exist wider than 1/4-inch at the
particles entering through the cracks. joint of the inlet/outlet pipe.
Baffles Baffles corroding, cracking warping, Baffles repaired or replaced to
and/or showing signs of failure as specifications.
determined by maintenance/inspection
person.
Access Ladder Ladder is corroded or deteriorated, not Ladder replaced or repaired
Damaged functioning properly, not securely and meets specifications, and is
attached to structure wall, missing rungs, safe to use as determined by
cracks, and misaligned. inspection personnel.
Below Ground Media Drawdown of water through the media Media cartridges replaced.
Cartridge Type takes longer than 1 hour, and/or overflow
occurs frequently.
Short Circuiting Flows do not properly enter filter Filter cartridges replaced.
cartridges.
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 20 of 28
No. 16—Baffle Oil/Water Separators (API Type)
Maintenance Defect Condition When Maintenance is Results Expected When
Component Needed Maintenance is Performed
General Monitoring Inspection of discharge water for Effluent discharge from vault should
obvious signs of poor water be clear with out thick visible sheen.
quality.
Sediment Sediment depth in bottom of vault No sediment deposits on vault
Accumulation exceeds 6-inches in depth. bottom that would impede flow
through the vault and reduce
separation efficiency.
Trash and Debris Trash and debris accumulation in Trash and debris removed from
Accumulation vault or pipe inlet/outlet, floatables vault and inlet/outlet piping.
and non-floatables.
Oil Accumulation Oil accumulations that exceed 1 Extract oil from vault by vactoring.
inch, at the surface of the water. Disposal in accordance with state
and local rules and regulations.
Damaged Pipes Inlet or outlet piping damaged or Pipe repaired or replaced.
broken and in need of repair.
Access Cover Cover cannot be opened, Cover repaired to proper working
Damaged/Not corrosion/deformation of cover. specifications or replaced.
Working
Vault Structure Vault replaced or repairs made so
Damage-Includes that vault meets design
Cracks in Walls See"Catch Basins" (No. 5). specifications and is structurally
Bottom, Damage to sound.
Frame and/or Top
Slab Cracks wider than 1/2-inch at the Vault repaired so that no cracks
joint of any inlet/outlet pipe or exist wider than 1/4-inch at the joint
evidence of soil particles entering of the inlet/outlet pipe.
through the cracks.
Baffles Baffles corroding, cracking, Baffles repaired or replaced to
warping and/or showing signs of specifications.
failure as determined by
maintenance/inspection person.
Access Ladder Ladder is corroded or Ladder replaced or repaired and
Damaged deteriorated, not functioning meets specifications, and is safe to
properly, not securely attached to use as determined by inspection
structure wall, missing rungs, personnel.
cracks, and misaligned.
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 21 of 28
No. 18—Catch Basin Inserts
Maintenance Defect Conditions When Maintenance Results Expected When
Component is Needed Maintenance is
Performed
General Sediment When sediment forms a cap No sediment cap on the insert
Accumulation over the insert media of the media and its unit.
insert and/or unit.
Trash and Debris Trash and debris accumulates Trash and debris removed from
Accumulation on insert unit creating a insert unit. Runoff freely flows
blockage/restriction. into catch basin.
Media Insert Not Effluent water from media insert Effluent water from media insert
Removing Oil has a visible sheen. is free of oils and has no visible
sheen.
Media Insert Water Catch basin insert is saturated Remove and replace media
Saturated with water and no longer has the insert.
capacity to absorb.
Media Insert-Oil Media oil saturated due to Remove and replace media
Saturated petroleum spill that drains into insert.
catch basin.
Media Insert Use Media has been used beyond Remove and replace media at
Beyond Normal the typical average life of media regular intervals, depending on
Product Life insert product. insert product.
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 22 of 28
NO. 20-BIORETENTION RAIN GARDENS
Maintenance Defect Conditions When Maintenance is Results Expected When
Component Needed Maintenance is Performed
Ponding Area Cracks or failure Cracks wider than %inch or Vault repaired or replaced so
in concrete maintenance/inspection personnel that it meets design
planter reservoir determine that the vault is not specification and is structurally
structurally sound sound
Failure in Erosion (gullies/rills)greater than 2 Eliminate source of erosion
earthen reservoir inches around inlets, outlet, and along and stabilize damaged area
(embankments, side slopes (regrade, rock, vegetation,
dikes, berms, erosion control blanket)
and side slopes)
Settlement greater than 4 inches Restore to design height
(relative to undisturbed sections of the
berm)
Downstream face of the berm or Plug holes. Contact
embankment wet, seeps or leaks evident geotechnical engineer ASAP.
Any evidence of rodent holes or water Eradicate rodents and repair
piping around holes if facility acts as a holes(fill and compact)
dam or berm
Sediment or Accumulation of sediment or debris Remove excess sediment or
debris debris. Identify and control the
accumulation sediment source, if feasible.
Facility should be free of
material. May contain standing
water.
Rockery Rock walls are insecure Stabilize walls
reservoir or walls
Basin inlet via Soil is exposed or signs of erosion are Repair and control erosion
surface flow visible. sources.
Basin inlet via Sediment, vegetation, or debris partially Clear the blockage. Identify
concentrated or fully blocking inlet structure the source of the blockage and
flow(e.g. curb take actions to prevent future
cuts) blockages.
Basin inlet Water splashes adjacent buildings Reconfigure/repair blocks.
splash block
failure Water disrupts soil media.
Inlet/outlet pipe Pipe is damaged. Repair/replace pipe.
failure
Pipe is clogged. Remove roots or debris.
Outlet pipe/ Sediment, vegetation, or debris is Clear the blockage. Identify
structure failure partially or fully blocking the outlet the source of the blockage and
structure. take actions to prevent future
blockages.
Trash rack Trash or debris present on trash rack. Clean and dispose of trash.
failure
Bar screen damaged or missing. Replace bar screen.
Check dams and Sediment, vegetation, or debris is Clear the blockage. Identify
weirs failures partially or fully blocking the check dam the source of the blockage and
or weir. take actions to prevent future
blockages.
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 23 of 28
NO. 20-BIORETENTION RAIN GARDENS
Maintenance Defect Conditions When Maintenance is Results Expected When
Component Needed Maintenance is Performed
Ponding Area Check dams and Erosion and/or undercutting is present. Repair and take preventative
weirs failures measures to prevent future
erosion and/or undercutting.
Flow spreader Sediment blocks 35%or more of Remove and dispose of
problems ports/notches or, sediment fills 35%or sediment.
more of sediment trap.
Grade board/baffle damaged or not Remove and reinstall to level
level. position.
Overflow/ Overflow spillway is partially or fully Remove and dispose of
emergency plugged with sediment or debris. sediment.
spillway
Native soil is exposed, or other signs of Repair erosion and stabilize
erosion are present. surface of spillway.
Spillway armament is missing. Replace armament.
Bioretention soil Water remains in the basin 48 hours or Ensure that underdrain(if
longer after the end of a storm. present)is not clogged. If
necessary, clear underdrain. If
this is not the problem,the
bioretention soil is likely
clogged. Remove the upper 2
to 3 inches of soil and replace
with imported bioretention soil.
Identify sources of clogging
and correct.
Vegetation Bottom swale Less than 80%of swale bottom is
vegetation covered with healthy wetland vegetation. Plant additional vegetation.
Ideally, planting should be
Upland slope Less than 70%of upland slopes are performed in the fall or winter.
vegetation covered with healthy vegetation.
Trees and Large trees and shrubs interfere with Prune or remove large trees
shrubs operation of the basin or access for and shrubs.
maintenance
Standing dead vegetation is present Remove standing dead
vegetation when covering
greater than 10%of the basin
area. Replace dead vegetation
annually or immediately if
necessary to control erosion
(e.g. on a steep slope).
Mulch Bare spots(without much cover)are Replenish with the appropriate
present or mulch covers less than 3 type of mulch to cover bare
inches deep for compost or 4 inches spots and augment to
deep for coarse,woody mulch. minimum depth.
Clippings Grass or other vegetation clippings Remove clippings.
accumulate to 2 inches or greater in
depth.
Vegetation Noxious weeds Listed noxious vegetation is present. By law, noxious weeds must
See Pierce County noxious weed list. be removed and disposed
immediately. Herbicides and
pesticides shall not be used in
order to protect water quality.
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 24 of 28
NO. 20-BIORETENTION RAIN GARDENS
Maintenance Defect Conditions When Maintenance is Results Expected When
Component Needed Maintenance is Performed
Weeds Weeds are present(unless on edge and Remove and dispose of weed
providing erosion control). material. Herbicides and
pesticides shall not be used in
order to protect water quality.
Irrigation Irrigation system Irrigation system present Follow manufacturer's
(if any) instructions for O&M
Plant watering Plant establishment period (1-3 years) Water weekly during periods
of no rain to ensure plant
establishment
Longer term period (3+years) Water during drought
conditions or more often if
necessary to maintain plant
cover.
Spill Prevention Spill prevention Storage or use of potential contaminants Exercise spill prevention
and Response in the vicinity of the facility. measures whenever handling
or storing potential
contaminants.
Spill response Release of pollutants. Call to report any Cleanup spills as soon as
spill to the Washington Dept. of possible to prevent
Emergency Management contamination of stormwater.
1-800-258-5990
Training and Training/written Training/written guidance is required for Provide property owners and
Documentation guidance proper O&M tenants with proper training
and a copy of the O&M
manual and Landscape and
Maintenance Manual.
Safety Safety(slopes) Erosion of sides causes slope to exceed Take actions to eliminate the
1:4 or otherwise become a hazard. hazard.
Safety(hydraulic Hydraulic structures(pipes, culverts, Take actions to eliminate the
structures) vaults, etc.)become a hazard to children hazard (such as covering and
playing in and around the facility. securing any openings).
Line of sight Vegetation causes some visibility(line of Prune.
sight) or driver safety issues.
Aesthetics Aesthetics Damage/vandalism/debris accumulation Restore facility to original
aesthetic conditions.
Grass/vegetation Less than 75% of planted vegetation is Take appropriate maintenance
healthy with a generally good actions(e.g. remove/replace
appearance. plants, amend soil, etc.)
Edging Grass is starting to encroach on swale. Repair edging.
Pest Control Mosquitoes Standing water remains in the basin for Identify the cause of the
more than three days following storms. standing water and take
appropriate actions to address
the problem (see Boiretention
Soil above)
Rodents Rodent holes are present near the Fill and compact the soil
facility. around the holes(refer to
Integrated Pest Management).
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 25 of 28
NO. 22-COMPOST AMENDED SOIL
Maintenance Defect Conditions When Maintenance Is Results Expected
Component Needed When Maintenance Is
Performed
General Facility Soil media Vegetation not fully covering ground Re-mulch landscape
Requirements (maintain high surface beds with 2-3 inches of
organic soil mulch until the
content) vegetation fully closes
over the ground surface
Preventative maintenance Return leaf fall and
shredded woody
materials from the
landscape to the site as
mulch.
On turf areas,
"grasscycle"((mulch-
mow or leave the
clippings)to build turf
health.
Avoid broadcast use of
pesticides(bug and
weed killers)like"weed
&feed",which damage
the soil life.
Where fertilization is
needed (mainly turf and
annual flower beds),
use a moderate
fertilizationprogram that
relies on natural
organic fertilizers(like
compost) or slow-
release synthetic
balanced fertilizers.
Compaction Soils become waterlogged, do not To remediate, aerate
appear to be infiltrating. soil, till or further
amend soil. If drainage
isstill slow, consider
investigating alternative
causes (e.g. high wet-
season
groundwaterlevels, low-
permeability soils).Also
consider land use and
protection from
compacting activities. If
areas are turf, aerate
compacted areas and
top dress them with '/4
to 1/2 inch of compost to
renovate them.
Erosion/scouring Areas of potential erosion are visible. Take steps to repair or
prevent erosion.
Indentify and address
the causes of erosion.
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 26 of 28
NO. 22-COMPOST AMENDED SOIL
Maintenance Defect Conditions When Maintenance Is Results Expected
Component Needed When Maintenance Is
Performed
General Facility Grass/vegetation Less than 75%of planted vegetation is Take appropriate
Requirements healthy with a generally good maintenance actions
appearance. (e.g. remove/replace
plants).
Noxious weeds Listed noxious vegetation is present. By law, loxious weeds
See Pierce County noxious weed list. must be removed and
disposed immediately.
Herbicides and
pesticides shall not be
used in order to protect
water quality.
Weeds Weeds are present. Remove and dispose of
weed material.
Herbicides and
pesticides shall not be
used in order to protect
water quality.
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 27 of 28
NO.24-PERVIOUS PAVEMENT
Maintenance Defect Conditions When Maintenance Is Results Expected
Component Needed When Maintenance Is
Performed
Surface Pervious asphalt Maintenance to prevent clogging with Use conventional street
or cement fine sediment. sweepers equipped
concrete with vacuums.
Prohibit use of sand
and sealant application
and protect from
construction runoff.
Major cracks or trip hazards Fill with patching mixes.
Large cracks and
settlement may require
cutting and replacing
the pavement section.
Utility cuts Any damage or change
due to utility cuts must
be replaced in kind.
Fallen Fallen leaves or debris Remove/dispose
leaves/debris
Interlocking Interlocking paving block missing or Replace paver block
concrete paver damaged.
blocks
Settlement of surface May require resettling
Sediment or debris accumulation Remove/dispose
between paver blocks
Loss of void material between paver Refill per
blocks manufacturer's
recommendations.
Varied conditions Perform O&M per
manufacturer's
recommendations.
FAC12-0007 Storm Water Easement and Maintenance Agreement
Page 28 of 28