22-102749-UP-Construction SWPPP-06-15-2022-V1
CONSTRUCTION STORMWATER
POLLUTION PREVENTION PLAN
FOR
PLANT 2 RELOCATION
JUNE 9, 2022
TABLE OF CONTENTS
Stormwater Pollution Prevention Plan
SECTION 1 – PROJECT DESCRIPTION: ............................................................................................. 1
SECTION 2 – POLLUTION PREVENTION TEAM: .............................................................................. 1
SECTION 3 – EXISTING CONDITIONS SUMMARY: .......................................................................... 1
SECTION 4 – REQUIRED ACTIVITY-SPECIFIC INFORMATION: ........................................................ 2
Appendices
Appendix A BMP Forms
Appendix B Miscellaneous Forms
1
SECTION 1 – PROJECT DESCRIPTION:
The on-site proposed project includes:
· Removing/demolishing the existing buildings and pavement.
· Clearing and grading.
· Installing the sanitary sewer, storm sewer, and water systems.
· Paving the onsite areas for the development.
· Installing road improvements including asphalt, curb, gutter, and sidewalk.
SECTION 2 – POLLUTION PREVENTION TEAM:
Names and contact information for those identified as members of the pollution prevention
team are provided in the following table:
Title Name(s) Phone Number
Certified Erosion and Sediment Control
Lead (CESCL)
To Be Assigned ~
Resident Engineer Gabe L. Jellison (253) 473-4494
Emergency Ecology Contact Northwest Regional Office (360) 407-6000
Emergency Owner Contact Sloan Clack (253) 826-5020
Non-Emergency Ecology Contact Northwest Regional Office (360) 407-6000
Monitoring Personnel To Be Assigned ~
SECTION 3 – EXISTING CONDITIONS SUMMARY:
The existing project site has three buildings and is covered predominantly with gravel and
asphalt paving with limited vegetation. Slopes onsite are generally one to two percent. The
existing site entrances near the southwest corner and southeast corner slope up to the site at
approximately 7 percent.
The project site consists of a single Threshold Discharge Area. Generally, runoff from the
western half of the site flows to the west to the existing storm conveyance system located
within Pacific Hwy. S., and runoff from the eastern half of the site flows to the south to the
existing storm conveyance system located within S. 351st Street which is then conveyed to the
west to Pacific Hwy. S. Runoff from adjacent properties does not appear to drain onto the
project site and run-on drainage is considered insignificant.
2
SECTION 4 – REQUIRED ACTIVITY-SPECIFIC INFORMATION:
Storage and Handling of Liquids
1. The following liquids could be handled or stored on-site, including but not limited to:
a. Petroleum products
b. Fuel
c. Solvents
d. Detergents
2. Refer to the Site Development Plans for the location, types and sizes of the liquid
containers to be held on-site, if any.
3. On-site fueling tanks and petroleum product storage containers, if any, shall include
secondary containment.
Storage and Stockpiling of Construction Materials and Wastes
1. No construction materials and wastes are proposed to be stored or stockpiled on-site at
this time.
2. In general, cut and fill slopes will be stabilized as soon as possible and soil stockpiles will
be temporarily covered with plastic sheeting. All stockpiled soils shall be stabilized from
erosion, protected with sediment trapping measures, and where possible, be located
away from storm drain inlets, waterways, and drainage channels.
3. All pollutants, including waste materials and demolition debris, that occur on-site shall
be handled and disposed of in a manner that does not cause contamination of
stormwater. Good housekeeping and preventative measures will be taken to ensure
that the site will be kept clean, well-organized, and free of debris. Solid waste will be
stored in secure, clearly marked containers. Portable sanitation facilities will be firmly
secured, regularly maintained, and emptied when necessary.
Fueling
1. No on-site fueling for construction equipment (i.e. stationary tanks, truck mounted
tanks, wet hosing, etc.) is proposed at this time.
2. No propane tanks within the project site are proposed at this time.
3. The following containment methods for fuel spills will be performed on-site:
a. All vehicles, equipment, and petroleum product storage/dispensing areas will be
inspected regularly to detect any leaks or spills, and to identify maintenance
needs to prevent leaks or spills.
b. Contaminated surfaces shall be cleaned immediately following any discharge or
spill incident.
4. No fueling is proposed to occur during evening hours at this time.
3
Maintenance, Repairs, and Storage of Vehicles and Equipment
1. No maintenance and repair areas and locations are proposed on-site at this time.
However, spill prevention measures, such as drip pans, will be used when conducting
maintenance and repair of vehicles or equipment if necessary.
2. The following methods will be used for collection, storage, and disposal of vehicle fluids
as required:
a. All vehicles, equipment, and petroleum product storage/dispensing areas will be
inspected regularly to detect any leaks or spills, and to identify maintenance
needs to prevent leaks or spills.
b. On-site fueling tanks and petroleum product storage containers shall include
secondary containment.
c. Spill prevention measures, such as drip pans, will be used when conducting
maintenance and repair of vehicles or equipment.
d. In order to perform emergency repairs on-site, temporary plastic will be placed
beneath and, if raining, over the vehicle.
e. Contaminated surfaces shall be cleaned immediately following any discharge or
spill incident.
3. No areas are proposed for vehicle maintenance at this time. However, if an area is
designated for vehicle maintenance, signs will be posted that state no vehicle washing
may occur in the area.
Concrete Saw Cutting, Slurry, and Washwater Disposal
1. Hand tools including, but not limited to, screeds, shovels, rakes, floats, and trowels shall
be washed off only into formed areas awaiting installation of concrete or asphalt.
2. The following methods will be followed for collecting, treating, and disposal of waste
water from exposed aggregate processes, concrete grinding and saw cutting, and new
concrete washing and curing water:
a. Concrete truck chutes, pumps, and internals shall be washed out only into
formed areas awaiting installation of concrete or asphalt.
b. Unused concrete remaining in the truck and pump shall be returned to the
originating batch plant for recycling, as feasible.
c. Equipment that cannot be easily moved, such as concrete pavers, shall only be
washed in areas that do not directly drain to natural or constructed stormwater
conveyances.
d. Washdown from areas such as concrete aggregate driveways shall not drain
directly to natural or constructed stormwater conveyances.
e. When no formed areas are available, washwater and leftover product shall be
contained in a lined container or a hole dug on-site. Contained concrete shall be
disposed of in a manner that does not violate groundwater or surface water
quality standards.
4
Handling of pH Elevated Water
New concrete vaults/structures may cause collected water to have an elevated pH. This water
cannot be discharged to storm or surface water until neutralized.
The key benchmark pH value for stormwater is a maximum of 8.5. If a pH greater than 8.5 is
measured in the sedimentation trap/pond(s) that has the potential to discharge to surface
water, the following steps will be conducted to treat/neutralize and/or dispose water:
a. Sampling and monitoring for pH will occur during the phase of construction
when concrete pouring will be conducted until fully cured (3 weeks from last
pour) and discharges are documented to be below pH 8.5. Samples will be
collected weekly at the sedimentation pond prior to discharge to surface water.
Samples will be analyzed for pH using a calibrated pH meter.
b. Prevent (detain) all discharges from leaving the site and entering surface waters
or storm drains if the pH is greater than 8.5.
c. Implement CO2 sparging or dry ice treatment in accordance with Ecology BMP
C252.
d. Describe inspection results and remedial actions that are taken in the site log
book and in monthly discharge monitoring reports.
Application of Chemicals including Pesticides and Fertilizers
1. At this time, the chemicals that may be used on the project site and the application
rates have not been determined.
2. Refer to the Landscape Plans for locations of on-site landscaping. Application of
agricultural chemicals, including fertilizers and pesticides, shall be conducted in a
manner and at application rates that will not result in loss of chemical to stormwater
runoff. Manufacturers’ recommendations for application procedures and rates shall be
followed.
3. Any chemicals stored in the construction areas will conform to the appropriate source
control BMPs listed in Volume IV of the Ecology Stormwater Manual. In Western WA, all
chemicals shall have cover, containment, and protection provided on-site.
35072_Construction SWPPP_031822.doc
APPENDIX A
CSWPP WORKSHEET/BMP FORMS
KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL
E S C M A I N T E N A N C E R E P O R T
Performed By:___________________________
Date:___________________________
Project Name:___________________________
DPER Permit #:___________________________
Clearing Limits
Damage OK Problem
Visible OK Problem
Intrusions OK Problem
Other OK Problem
Mulch
Rills/Gullies OK Problem
Thickness OK Problem
Other OK Problem
Nets/Blankets
Rills/Gullies OK Problem
Ground Contact OK Problem
Other OK Problem
Plastic
Tears/Gaps OK Problem
Other OK Problem
Seeding
Percent Cover OK Problem
Rills/Gullies OK Problem
Mulch OK Problem
Other OK Problem
Sodding
Grass Health OK Problem
Rills/Gullies OK Problem
Other OK Problem
Perimeter Protection including Silt Fence
Damage OK Problem
Sediment Build-up OK Problem
Concentrated Flow OK Problem
Other OK Problem
Flow Control BMP protection
Damage OK Problem
Sedimentation OK Problem
Concentrated Flow OK Problem
Rills/Gullies OK Problem
Intrusions OK Problem
Other OK Problem
Brush Barrier
Damage OK Problem
Sediment Build-up OK Problem
Concentrated Flow OK Problem
Other OK Problem
Vegetated Strip
Damage OK Problem
Sediment Build-up OK Problem
Concentrated Flow OK Problem
Other OK Problem
Construction Entrance
Dimensions OK Problem
Sediment Tracking OK Problem
Vehicle Avoidance OK Problem
Other OK Problem
2016 Surface Water Design Manual – Appendix D CSWPP Forms 4/24/2016
KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL
Wheel Wash
Dimensions OK Problem
Sed build up or tracking OK……. Problem
Other OK Problem
Construction Road
Stable Driving Surf. OK Problem
Vehicle Avoidance OK Problem
Other OK Problem
Sediment Trap/Pond
Sed. Accumulation OK Problem
Overtopping OK Problem
Inlet/Outlet Erosion OK Problem
Other OK Problem
Catch Basin/Inlet Protection
Sed. Accumulation OK Problem
Damage OK Problem
Clogged Filter OK Problem
Other OK Problem
Interceptor Dike/Swale
Damage OK Problem
Sed. Accumulation OK Problem
Overtopping OK Problem
Other OK Problem
Pipe Slope Drain
Damage OK Problem
Inlet/Outlet OK Problem
Secure Fittings OK Problem
Other OK Problem
Ditches
Damage OK Problem
Sed. Accumulation OK Problem
Overtopping OK Problem
Other OK Problem
Outlet Protection
Scour OK Problem
Other OK Problem
Level Spreader
Damage OK Problem
Concentrated Flow OK Problem
Rills/Gullies OK Problem
Sed. Accumulation OK Problem
Other OK Problem
Dewatering Controls
Sediment OK.. Problem
Dust Control
Palliative applied OK Problem
Miscellaneous
Wet Season Stockpile OK Problem
Other OK Problem
Comments:
Actions Taken:
Problems Unresolved:
2016 Surface Water Design Manual – Appendix D CSWPP Forms 4/24/2016
KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL
BMP Implementation
Completed by:
Title:
Date:
Develop a plan for implementing each BMP. Describe the steps necessary to implement the BMP (i.e., any
construction or design), the schedule for completing those steps (list dates), and the person(s) responsible for
implementation.
BMPs
Description of Action(s) Required for
Implementation
Scheduled Milestone and
Completion Date(s)
Person
Responsible for
Action
Good
Housekeeping
1.
2.
3
Preventive
Maintenance
1.
2.
3.
4.
Spill
Prevention
and
Emergency
Cleanup
1.
2.
3.
Inspections 1.
2.
3.
2016 Surface Water Design Manual – Appendix D CSWPP Forms 4/24/2016
KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL
BMPs
Description of Action(s) Required for Implementation
Schedule Milestone and
Completion Date(s)
Person
Responsible for
Action
Source Control
BMPs
1.
2.
3
4.
5.
6.
7.
8.
Treatment BMPs 1.
2.
3.
4.
Emerging
technologies
1.
2.
Flow Control
BMPs
3.
4.
2016 Surface Water Design Manual – Appendix D CSWPP Forms 4/24/2016
KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL
Pollution Prevention Team
Completed by: ______________________
Title: ______________________________
Date: ______________________________
Responsible Official: Title:
Team Leader: Office Phone:
Cell Phone #:
Pager #:
Responsibilities:
(1) Title:
Office Phone:
Pager #:
Cell Phone:
Responsibilities:
(2) Title:
Office Phone:
Pager #:
Cell Phone #:
Responsibilities:
2016 Surface Water Design Manual – Appendix D CSWPP Forms 4/24/2016
KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL
Employee Training
Completed by:
Title:
Date:
Describe the annual training of employees on the SWPPP, addressing spill response, good housekeeping, and material management practices.
Training Topics
1.) LINE WORKERS
Brief Description of Training Program/Materials
(e.g., film, newsletter course)
Schedule for Training
(list dates)
Attendees
Spill Prevention and
Response
Good Housekeeping
Material Management
Practices
2.) P2 TEAM:
SWPPP Implementation
Monitoring Procedures
2016 Surface Water Design Manual – Appendix D CSWPP Forms 4/24/2016
KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL
List of Significant Spills and Leaks
Completed by:
Title:
Date:
List all spills and leaks of toxic or hazardous pollutants that were significant but are not limited to, release of oil or hazardous substances in excess of reportable
quantities. Although not required, we suggest you list spills and leaks of non-hazardous materials.
Description Response Procedure
Date
(month/day/ye
ar)
Location
(as
indicated
on site
map)
Type of
Material
Quantit
y
Sourc
e, If
Known
Reason for
Spill/Leak
Amount of
Material
Recovered
Material No
longer
exposed to
Stormwater
(Yes/No)
Preventive Measure Taken
2016 Surface Water Design Manual – Appendix D CSWPP Forms 4/24/2016
KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL
Potential Pollutant Source Identification
Completed by:
Title:
Date:
List all potential stormwater pollutants from materials handled, treated, or stored on-site.
Potential Stormwater Pollutant
Stormwater Pollutant Source
Likelihood of pollutant being present in your
stormwater discharge. If yes, explain
2016 Surface Water Design Manual – Appendix D CSWPP Forms 4/24/2016
KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL
Material Inventory
Completed by:
Title:
Date:
List materials handled, treated, stored, or disposed of at the project site that may potentially be exposed to precipitation or runoff.
Quantity (Units) Likelihood of contact with stormwater Past Spill or
Used Produced Stored If Yes, describe reason Leak
Material Purpose/Location (indicate per/wk. or yr.) Yes No
2016 Surface Water Design Manual – Appendix D CSWPP Forms 4/24/2016
APPENDIX B
MISCELLANEOUS FORMS
Emergency Phone Numbers
Fire, Police, Ambulance 911
Owner: 35000 Pacific Hwy South LLC (253) 826-5020
General Contractor: To be determined Office: N/A
Mobile # N/A
Subcontractors
Sub #1: To be determined Office: N/A
Sub #2: To be determined Office: N/A
Sub #3: To be determined Office: N/A
Sub #4: To be determined Office: N/A
City Contact: To be determined N/A
State Ecology Dept.: Northwest Region (360) 407-6000
Emergency – Spill Procedures:
All discharges to the District or City sewer system (storm or sanitary) require District or City
approval. The approval may include a separate Special Approved Discharge (SAD) permit.
All pollutants, including waste materials and demolition debris, that occur on-site during
construction shall be handled and disposed of in a manner that does not cause contamination
of surface water.
Cover, containment, and protection from vandalism shall be provided for all chemicals, liquid
products, petroleum products, and non-inert wastes present on the site. See Chapter 173-304
WAC for the definition of inert waste.
Maintenance and repair of heavy equipment and vehicles involving oil changes, hydraulic
system drain down, solvent and de-greasing cleaning operations, fuel tank drain down and
removal, and other activities which may result in discharge or spillage of pollutants to the
ground or into surface water must be conducted using spill prevention measures, such as drip
pans. Contaminated surfaces shall be cleaned immediately following any discharge or spill
incident. Emergency repairs may be performed on-site using temporary plastic placed beneath
and, if raining, over the vehicle.
Wheel wash or tire bath wastewater shall be discharged to a separate on-site treatment system
or to the sanitary sewer (with the District approval noted above).
Application of agricultural chemicals including fertilizers and pesticides shall be conducted in a
manner and at application rates that will not result in loss of chemical to surface water runoff.
Manufacturers’ recommendations for application rates and procedures shall be followed.
A site representative shall notify the City of Federal Way and/or the Lakehaven Water and
Sewer District within 24-hours of any spillage or discharge of pollutants.
In the event of a spill, make the appropriate notification(s) consistent with the following
procedures:
· Call 911 for fire department, police, and ambulance if required.
· Any spill of oil which 1) violates water quality standards, 2) produces a “sheen” on a
surface water, or 3) causes a sludge or emulsion must be reported immediately by
telephone to the National Response Center Hotline at (800) 424-8802.
· Any oil, hazardous substance, or hazardous waste release which exceeds the
reportable quantity must be reported immediately by telephone to the National
Response Center Hotline at (800) 424-8802.
· Any spill of oil or hazardous substance to waters of the state must be reported
immediately by telephone to the Washington State Emergency Management Division
at (800) 258-5990.
· Any release of a hazardous substance that may be a threat to human health or the
environment must be reported to the Ecology Toxics Cleanup Program immediately,
but no longer than 90 days from discovery.
A site representative will be responsible for completing the spill reporting form and for
reporting the spill to the appropriate state or local agency. Facility personnel with primary
responsibility for spill response and cleanup will need to be trained as required to respond and
clean up spills. This training will include identifying the location of spill kits and other spill
response equipment and the use of spill response materials. Spill response equipment will be
inspected and maintained as necessary to replace any materials used in spill response activities.
Spill Report Form
Location:
Date:___________________ Time:
Regulatory agencies notified (date, time, person, agency, and how):
Material spilled:
Quantity spilled:
Source:
Cause:
Extent of injuries (if any):
Adverse environmental impact (if any):
Immediate remedial actions taken at time of spill:
Measures taken or planned to prevent recurrence:
Additional comments:
This report prepared by:
(Signature)
(Date) (Job title)
BMP Maintenance and Inspection Schedule
(Source Control BMPs)
BMP
Designation
BMP Name Recommended Maintenance Recommended Schedule of
Maintenance
D.2.1.4.1 Stabilized
Construction
Entrance
Inspect stabilized areas regularly, especially
after large storm events. Add rock (hog fuel),
gravel, etc. as needed to maintain a stable
surface which won’t erode.
Daily
D.2.1.2.6 Temporary &
Permanent
Seeding
Re-seed areas failing to establish 80% cover
within one month (during growing season). If
re-seeding is ineffective, use sodding or
nets/blankets. Eroded areas shall be
corrected, re-planted, and irrigated as
required.
Inspect to ensure growth
weekly
D.2.1.2.2 Mulching Maintain specified thickness of mulch cover.
Eroded areas must be corrected and re-
mulched. Drainage problems must be
corrected.
Weekly and following
storms
D.2.1.6.1 Interceptor
Swale
Immediately remove sediment from the flow
area. Repair damage caused by construction
traffic or other activity before the end of each
working day. Check outlets and make timely
repairs as needed to avoid gully formation.
When the area below the temporary diversion
dike is permanently stabilized, remove the
dike and fill and stabilize the channel to blend
with the natural surface.
Weekly and following
storms
D.2.1.8 Dust Control Use dust control practices in areas (including
roadways) subject to surface and air
movement of dust where on-site and off-site
impacts to roadways, drainage ways, or
surface waters are likely. Evaluate the
potential for dust generation frequently during
dry periods.
Daily
D.2.1.3.1 Silt Fence Repair any damage immediately. Check the
uphill side of the fence for signs of the fence
clogging, acting as a barrier to flow, and then
causing channelization of flows parallel to the
fence. If this occurs, replace the fence or
remove the trapped sediment. Remove
sediment deposits when the deposit reaches
approximately one-third the height of the silt
fence, or install a second silt fence. If the filter
fabric (geotextile) has deteriorated due to
ultraviolet breakdown, replace it.
Weekly and following
storms
D.2.1.5.2 Sediment
Pond
Sediment shall be removed from the pond
when it reaches 1 foot in depth. Any damage
to the pond embankments or slopes shall be
repaired.
Inspection daily
D.2.1.5.3 Storm Drain
Inlet
Protection
Sediment shall be removed from the catch
basin insert when it has filled one-third of the
available storage.
Inspection daily
Erosion and Sediment Control Inspection Form
Inspector(s):________________________________Date:________________
Site Name and Location:___________________________________________
Current Weather Conditions:_____________ Last 24 Hours:______________
BMP Designation Not O.K. BMP Condition, Corrective Action, General Notes
Construction Access
Trackout?
Street Clean?
Soil Stabilization
Signs of Erosion:
Gullies?
Slope Failures?
Rills?
Slope Protection
Plastic Condition?
Grass Growing?
Hydroseed Condition?
Matting?
Perimeter Control
Clearing Limits Marked?
Silt Fences?
Swales?
Conveyances Stable
Ditches?
Check Dams Intact?
Sand Bags?
Slope Drains?
TESC Management
Revisions Required?
Water Management
Infiltration System?
Clean and Dirty Water Separated?
Off-site Water Bypassing?
Outlet Protection
Stabilized?
Erosion and Sediment Control Inspection Form
BMP Designation t O.K. BMP Condition, Corrective Action, General Notes
Stormwater Detention
And Monitoring
BMP Maintenance
Inlet Protection
Dust Control
Spill Prevention
Condition of Discharge
Water
Comments:_______________________________________________________________________________________
_________________________________________________________________________________________________
_________________________________________________________________________________________________
_________________________________________________________________________________________________
_________________________________________________________________________________________________
_________________________________________________________________________________________________
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