DNS RESUB1 BLD2024-0551+SWPPP+8.21.2024_10.49.49_AM+4454077Construction Stormwater General Permit (CSWGP)
Stormwater Pollution Prevention Plan
(SWPPP)
for
Reid SFR
Prepared for:
The Washington State Department of Ecology
Northwest Region
Permittee / Owner
Developer
Operator / Contractor
Kevin and Carolyn Reid
Kevin and Carolyn Reid
TBD
326 Sunset Ave N.
326 Sunset Ave N.
Edmonds, WA 98020
Edmonds, WA 98020
15501 Midvale Ave N
Shoreline, WA
Certified Erosion and Sediment Control Lead (CESCL)
Name
Organization
Contact Phone Number
TBD
TBD
TBD
SWPPP Prepared By
Name
Organization
Contact Phone Number
Jean -Luc Vidal, EIT
Furr Engineering, PLLC
(206) 605-8017
SWPPP Preparation Date
7/29/2024
Project Construction Dates
Activity / Phase
Start Date
End Date
Project construction
May 1st, 2025
May. 30th, 2026
Table of Contents
1 Project Information..............................................................................................................
4
1.1 Existing Conditions......................................................................................................
4
1.2 Proposed Construction Activities..................................................................................
5
2 Construction Stormwater Best Management Practices(BMPs)...........................................
6
2.1 The 13 Elements..........................................................................................................
6
2.1.1 Element 1: Preserve Vegetation / Mark Clearing Limits ........................................
6
2.1.2 Element 2: Establish Construction Access............................................................
7
2.1.3 Element 3: Control Flow Rates.............................................................................
8
2.1.4 Element 4: Install Sediment Controls....................................................................
8
2.1.5 Element 5: Stabilize Soils.....................................................................................
9
2.1.6 Element 6: Protect Slopes....................................................................................10
2.1.7 Element 7: Protect Drain Inlets............................................................................11
2.1.8 Element 8: Stabilize Channels and Outlets..........................................................12
2.1.9 Element 9: Control Pollutants...............................................................................13
2.1.10 Element 10: Control Dewatering..........................................................................15
2.1.11 Element 11: Maintain BMPs.................................................................................16
2.1.12 Element 12: Manage the Project..........................................................................17
2.1.13 Element 13: Protect Low Impact Development (LID) BMPs.................................18
3 Pollution Prevention Team.................................................................................................18
4 Monitoring and Sampling Requirements............................................................................19
4.1 Site Inspection............................................................................................................19
4.2 Stormwater Quality Sampling......................................................................................19
4.2.1 Turbidity Sampling...............................................................................................19
4.2.2 pH Sampling........................................................................................................21
5 Discharges to 303(d) or Total Maximum Daily Load (TMDL) Waterbodies .........................22
5.1 303(d) Listed Waterbodies..........................................................................................22
5.2 TMDL Waterbodies.....................................................................................................22
6 Reporting and Record Keeping..........................................................................................23
6.1 Record Keeping..........................................................................................................23
6.1.1 Site Log Book......................................................................................................23
6.1.2 Records Retention...............................................................................................23
6.1.3 Updating the SWPPP...........................................................................................23
6.2 Reporting....................................................................................................................24
6.2.1 Discharge Monitoring Reports..............................................................................24
6.2.2 Notification of Noncompliance..............................................................................24
Page I 1
List of Tables
Table 1 — Summary of Site Pollutant Constituents................................................................ 5
Table2 — Pollutants................................................................................................................13
Table 3 — pH -Modifying Sources............................................................................................14
Table4 — Dewatering BMPs....................................................................................................15
Table5 — Management............................................................................................................17
Table 6 — BMP Implementation Schedule..............................................................................18
Table 7 — Team Information....................................................................................................18
Table 8 — Turbidity Sampling Method....................................................................................19
Table 9 — pH Sampling Method..............................................................................................21
List of Appendices
Appendix/Glossary
A. Site Map
B. BMP Detail
C. Correspondence
D. Site Inspection Form
E. Construction Stormwater General Permit (CSWGP)
F. 303 (d) List Waterbodies/TMDL Waterbodies Information
G. Contaminated Site Information
H. Engineering Calculations
Page 12
List of Acronyms and Abbreviations
Acronym / Abbreviation
Explanation
303(d)
Section of the Clean Water Act pertaining to Impaired Waterbodies
BFO
Bellingham Field Office of the Department of Ecology
BMP(s)
Best Management Practice(s)
CESCL
Certified Erosion and Sediment Control Lead
COz
Carbon Dioxide
CRO
Central Regional Office of the Department of Ecology
CSWGP
Construction Stormwater General Permit
CWA
Clean Water Act
DMR
Discharge Monitoring Report
DO
Dissolved Oxygen
Ecology
Washington State Department of Ecology
EPA
United States Environmental Protection Agency
ERO
Eastern Regional Office of the Department of Ecology
ERTS
Environmental Report Tracking System
ESC
Erosion and Sediment Control
GUILD
General Use Level Designation
NPDES
National Pollutant Discharge Elimination System
NTU
Nephelometric Turbidity Units
NWRO
Northwest Regional Office of the Department of Ecology
pH
Power of Hydrogen
RCW
Revised Code of Washington
SPCC
Spill Prevention, Control, and Countermeasure
su
Standard Units
SWMMEW
Stormwater Management Manual for Eastern Washington
SWMMWW
Stormwater Management Manual for Western Washington
SWPPP
Stormwater Pollution Prevention Plan
TESC
Temporary Erosion and Sediment Control
SWRO
Southwest Regional Office of the Department of Ecology
TMDL
Total Maximum Daily Load
VFO
Vancouver Field Office of the Department of Ecology
WAC
Washington Administrative Code
WSDOT
Washington Department of Transportation
WWHM
Western Washington Hydrology Model
Page 13
1 Project Information
Project/Site Name: Reid SFR
Street/Location: 326 Sunset Ave N
City: Edmonds State: WA Zip code: 98020
Subdivision:
Receiving waterbody: Black River
1.1 Existing Conditions
Total acreage (including support activities such as off -site equipment staging yards, material
storage areas, borrow areas).
Total acreage: 0.182 ac
Disturbed acreage: 0.185 ac
Existing structures: N/A
Landscape Topography: Slopes 1-5%
Drainage patterns: Stormwater generally sheet -flows east to west
conveyed along gutter in Sunset Ave N. Enters catch
basin along Sunset Ave N. and discharges via
Municipal Storm System to the Puget Sound
Existing Vegetation: Grass pasture
Critical Areas (wetlands, streams, Seismic hazard area
high erosion risk, steep or difficult to
stabilize slopes):
List of known impairments for 303(d) listed or Total Maximum Daily Load (TMDL) for the
receiving waterbody: N/A
Table 1 includes a list of suspected and/or known contaminants associated with the construction
activity.
There are no known contaminants within the soil at this location.
Page 14
Table 1 — Summary of Site Pollutant Constituents
Constituent (Pollutant)
Location
Depth
Concentration
None known to exist on site
1.2 Proposed Construction Activities
Description of site development:
The project proposes the demolition of an existing single family residence and the construction of
a new single-family residence. Stormwater will be conveyed on site towards the drainage system
in the adjacent property and direct discharged to the Puget Sound.
Description of construction activities:
Site preparation, excavation, install BMPs, building construction, grading, equipment and piping
installation , filling trenches, site stabilization.
Description of site drainage (see Appendix A):
Stormwater generally sheet -flows east to west conveyed along gutter in Sunset Ave N. Enters
catch basin along Sunset Ave N. and discharges via Municipal Storm System to the Puget Sound
Description of final stabilization:
Fill trenches, pavement restoration, installation of walkway, soil amendment and revegetation.
Contaminated Site Information:
No contaminated soils or groundwater is anticipated for this project.
Page 15
2 Construction Stormwater Best Management Practices (BMPs)
The SWPPP is a living document reflecting current conditions and changes throughout the life
of the project. These changes may be informal (i.e., hand-written notes and deletions). Update
the SWPPP when the CESCL has noted a deficiency in BMPs or deviation from original design.
2.1 The 13 Elements
2.1.1 Element 1: Preserve Vegetation / Mark Clearing Limits
The site will be delineated by silt fence.
List and describe BMPs:
BMP C101: Preserving Natural Vegetation
BMP C102: Buffer Zone
BMP C233: Silt Fence
Installation Schedules: once prior to construction
Inspection and Maintenance plan: Weekly and daily during storm events
Responsible Staff: TBD
Page 16
2.1.2 Element 2: Establish Construction Access
Street washing is not permitted, even after shoveling or sweeping.
Vehicles that use public roads will not go beyond the stabilized construction area
Limit vehicle access limited to one route.
During construction, if material is being deposited on off -site streets, consider implementing the
following:
1. Regenerative -type vacuum sweepers and repeated or continuous sweeping.
2. Wheel wash (or an improved wheel wash if one already exists).
3. Special site procedures and provisions (such as transferring haul -outs to trucks that travel
only on paved and maintained surfaces in the site).
4. Suspension of work until dry weather.
List and describe BMPs:
BMP C105: Stabilized Construction Entrance / Exit
Inspection and Maintenance plan: Weekly
It will be the responsibility to clean all roadway surfaces using regenerative vacuum sweepers.
Installation Schedules: as needed.
Responsible Staff: TBD
Page 17
2.1.3 Element 3: Control Flow Rates
Site driveway will be constructed using porous pavement.
Will you construct stormwater retention and/or detention facilities?
❑ Yes ® No
Will you use permanent infiltration ponds or other low impact development (example: rain
gardens, bio-retention, porous pavement) to control flow during construction?
® Yes ❑ No
List and describe BMPs:
Installation Schedules:.
Inspection and Maintenance plan:
Weekly and after every storm event.
Responsible Staff:
2.1.4 Element 4: Install Sediment Controls
Silt fence will be installed downstream along the determined clearing limits.
List and describe BMPs:
BMP C233: Silt Fence
Installation Schedules: once prior to construction activities
Inspection and Maintenance plan: Weekly and daily during storm events.
Responsible Staff: TBD
If the standards are not being met, additional BMPs (including site -specific designs) shall be
implemented. If additional BMPs are not implemented or are not successful, work may be
suspended until the City approves a new SWPPP (see Vol. II: 2.3).
Page 18
2.1.5 Element 5: Stabilize Soils
All unworked exposed soil will be covered by mulching, plastic covering or permanently
vegetated.
West of the Cascade Mountains Crest
Season
Dates
Number of Days Soils Can
be Left Exposed
During the Dry Season
May 1 — September 30
7 days
During the Wet Season
October 1 — April 30
2 days
Soils must be stabilized at the end of the shift before a holiday or weekend if needed
based on the weather forecast.
Anticipated project dates: Start date: TBD End date: TBD
Will you construct during the wet season?
❑ Yes ® No
List and describe BMPs:
BMP C120: Temporary and Permanent Seeding
BMP C121: Mulching
BMP C123: Plastic Covering
BMP C 140: Dust Control
BMP C150: Materials on Hand - in the event that additional TESC materials are necessary
during emergency situations.
Installation Schedules: Once prior to construction activities
Inspection and Maintenance plan: Weekly and daily during storm events
Responsible Staff: TBD
Page 19
2.1.6 Element 6: Protect Slopes
Cut slopes of 2ft are expected during foundation construction. These slopes should be covered
by plastic until foundation walls are set and the foundations should be immediately backfilled.
Exposed soils will be covered with mulch then nets and blankets.
Clearing/grading work shall comply with the Stormwater Manual, geotechnical
recommendations, SEPA (State Environmental Policy Act) conditions, and other applicable
regulations and standards. These project -specific requirements are in addition to and take
priority over general standards.
Will steep slopes be present at the site during construction?
® Yes ❑ No
List and describe BMPs:
BMP C121: Mulching
BMP C122: Nets and Blankets
BMP C123: Plastic Covering
Installation Schedules: When cuts are made
Inspection and Maintenance plan: Daily
Responsible Staff: TBD
Page 1 10
2.1.7 Element 7: Protect Drain Inlets
Catch basins along Sunset Ave N. will have storm drain inlet protection.
List and describe BMPs: BMP C220: Inlet Protection
Installation Schedules: Once prior to construction activities
Inspection and Maintenance plan: Weekly and daily during storm events
Responsible Staff: TBD
Page 111
2.1.8 Element 8: Stabilize Channels and Outlets
Temporary conveyance channels are not anticipated for this project.
List and describe BMPs:
Installation Schedules:
Inspection and Maintenance plan:
Responsible Staff:
Page 112
2.1.9 Element 9: Control Pollutants
The following pollutants are anticipated to be present on -site
Table 2 — Pollutants
Pollutant (List pollutants and source, if applicable)
Concrete from foundation construction
Waste material
All pollutants, including waste materials and demolition debris, that occur onsite 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. Dust will be controlled and is in compliance with the Puget
Sound Clean Air Agency and Work in Critical Areas conforms to requirements of the City's
Critical Areas Ordinance (CAO). If required, BMPs to be implemented to control specific
sources of pollutants are discussed below.
BMP C151: Concrete Handling
BMP C152: Saw cutting and Surfacing Pollution Prevention
BMP C153: Material Delivery, Storage and containment
Installation Schedules: Prior to construction and during foundation construction
Inspection and Maintenance plan: Weekly and during storm events
Responsible Staff: TBD
Will maintenance, fueling, and/or repair of heavy equipment and vehicles occur on -site?
❑ Yes ❑ No
List and describe BMPs:
Installation Schedules:
Inspection and Maintenance plan:
Responsible Staff:
Will wheel wash or tire bath system BMPs be used during construction?
❑ Yes ❑ No
List and describe BMPs:
Installation Schedules:
Page 113
Inspection and Maintenance plan:
Responsible Staff:
Will pH -modifying sources be present on -site?
® Yes ❑ No If yes, check the source(s).
Table 3 — pH -Modifying Sources
❑
None
®
Bulk cement
❑
Cement kiln dust
❑
Fly ash
❑
Other cementitious materials
®
New concrete washing or curing waters
❑
Waste streams generated from concrete grinding and sawing
❑
Exposed aggregate processes
❑
Dewatering concrete vaults
❑
Concrete pumping and mixer washout waters
❑
Recycled concrete
❑
Recycled concrete stockpiles
❑
Other (i.e., calcium lignosulfate) [please describe: ]
Construction concrete washout is planned to be done onsite using an eco-pan type system. On
a weekly basis the eco pans will be disposed of offsite at an approved facility.
List and describe BMPs:
BMP C151: Concrete Handling
BMP C152: Saw cutting and Surfacing Pollution Prevention
BMP C153: Material Delivery, Storage and containment
Installation Schedules: Throughout the project
Inspection and Maintenance plan: Inspection and Maintenance plan: Inspect weekly and
dispose of eco pans weekly or more frequently. Dispose to an approved facility
Responsible Staff: TBD
Adjust pH of stormwater if outside the range of 6.5 to 8.5 su.
Obtain written approval from Ecology and the City of Shoreline before using chemical treatment
with the exception of COz or dry ice to modify pH.
Concrete trucks must not be washed out onto the ground, or into storm drains, open ditches,
streets, or streams. Excess concrete must not be dumped on -site, except in designated
concrete washout areas with appropriate BMPs installed.
Page 1 14
Will uncontaminated water from water -only based shaft drilling for construction of building, road,
and bridge foundations be infiltrated provided the wastewater is managed in a way that prohibits
discharge to surface waters?
❑ Yes ® No
If yes, provide BMPs to contain the wastewater during infiltration.
List and describe BMPs:
Installation Schedules:
Inspection and Maintenance plan:
Responsible Staff:
2.1.10 Element 10: Control Dewatering
Dewatering is not anticipated for this project.
Check treatment of disposal option for dewatering water, if applicable: N/A
Table 4 — Dewatering BMPs
❑
Infiltration
❑
Transport off -site in a vehicle (vacuum truck for legal disposal)
❑
Ecology -approved on -site chemical treatment or other suitable treatment technologies
❑
Sanitary or combined sewer discharge with local sewer district approval (last resort)
❑
Use of sedimentation bag with discharge to ditch or swale (small volumes of localized
dewaterin
List and describe BMPs:
Installation Schedules:
Inspection and Maintenance plan:
Responsible Staff:
Page 1 15
2.1.11 Element 11: Maintain BMPs
All temporary and permanent Erosion and Sediment Control (ESC) BMPs shall be maintained
and repaired as needed to ensure continued performance of their intended function.
Maintenance and repair shall be conducted in accordance with each particular BMP
specification (see Volume 11 of the SWMMWW or Chapter 7 of the SWMMEW).
Visual monitoring of all BMPs installed at the site will be conducted at least once every calendar
week and within 24 hours of any stormwater or non-stormwater discharge from the site. If the
site becomes inactive and is temporarily stabilized, the inspection frequency may be reduced to
once every calendar month.
All temporary ESC BMPs shall be removed within 30 days after final site stabilization is
achieved or after the temporary BMPs are no longer needed.
Trapped sediment shall be stabilized on -site or removed. Disturbed soil resulting from removal
of either BMPs or vegetation shall be permanently stabilized.
Additionally, protection must be provided for all BMPs installed for the permanent control of
stormwater from sediment and compaction. BMPs that are to remain in place following
completion of construction shall be examined and restored to full operating condition. If
sediment enters these BMPs during construction, the sediment shall be removed and the facility
shall be returned to conditions specified in the construction documents.
Page 1 16
2.1.12 Element 12: Manage the Project
The project will be managed based on the following principles:
• Projects will be phased to the maximum extent practicable and seasonal work limitations
will be taken into account.
• Inspection and monitoring:
o Inspection, maintenance and repair of all BMPs will occur as needed to ensure
performance of their intended function.
o Site inspections and monitoring will be conducted in accordance with Special
Condition S4 of the CSWGP. Sampling locations are indicated on the Site Map.
Sampling station(s) are located in accordance with applicable requirements of
the CSWGP.
• Maintain an updated SWPPP.
o The SWPPP will be updated, maintained, and implemented in accordance with
Special Conditions S3, S4, and S9 of the CSWGP.
• For CESCL requirements, and Rainy Season Requirements and Seasonal Suspension
Plan, refer to EDM Chapter 22, Stormwater Pollution Prevention Plan.
As site work progresses the SWPPP will be modified routinely to reflect changing site
conditions. The SWPPP will be reviewed monthly to ensure the content is current.
Check all the management BMPs that apply at your site:
Table 5 — Management
®
Design the project to fit the existing topography, soils, and drainage patterns
®
Emphasize erosion control rather than sediment control
®
Minimize the extent and duration of the area exposed
®
Keep runoff velocities low
®
Retain sediment on -site
®
Thoroughly monitor site and maintain all ESC measures
®
Schedule major earthwork during the dry season
❑
Other (please describe)
Page 117
Table 6 — BMP Implementation Schedule
Phase of Construction
Stormwater BMPs
Date
Wet/Dry
Project
Season
TBD
TBD
TBD
TBD
2.1.13 Element 13: Protect Low Impact Development (LID) BMPs
None.
3 Pollution Prevention Team
Table 7 — Team Information
Title
Names
Phone Number
Certified Erosion and
Sediment Control Lead
(CESCL)
TBD
TBD
Resident Engineer
Dean A. Furr, P.E., CESCL
206.890.8291
Emergency Ecology
Contact
Report A Spill
425.649.7000
Emergency Permittee/
Owner Contact
Kevin and Carolyn Reid
Non -Emergency Owner
Contact
Kevin and Carolyn Reid
Monitoring Personnel
TBD
Ecology Regional Office
Northwest Regional Office
425.649.7000
Page 1 18
4 Monitoring and Sampling Requirements
Monitoring includes visual inspection, sampling for water quality parameters of concern, and
documentation of the inspection and sampling findings in a site log book. A site log book will be
maintained for all on -site construction activities and will include:
• A record of the implementation of the SWPPP and other permit requirements
• Site inspections
• Stormwater sampling data
Create your own Site Inspection Form or use the Construction Stormwater Site Inspection Form
found on Ecology's website.
http://www. ecy.wa.gov/programs/wq/stormwater/construction/index. htmI
File a blank form under Appendix D.
The site log book must be maintained on -site within reasonable access to the site and be made
available upon request to Ecology or the local jurisdiction.
Numeric effluent limits may be required for certain discharges to 303(d) listed waterbodies. See
CSWGP Special Condition S8 and Section 5 of this template.
4.1 Site Inspection
Site inspections will be conducted at least once every calendar week and within 24 hours
following any discharge from the site. For sites that are temporarily stabilized and inactive, the
required frequency is reduced to once per calendar month.
The discharge point(s) are indicated on the Site Map (see Appendix A) and in accordance with
the applicable requirements of the CSWGP.
4.2 Stormwater Quality Sampling
4.2.1 Turbidity Sampling
Requirements include calibrated turbidity meter or transparency tube to sample site discharges
for compliance with the CSWGP. Sampling will be conducted at all discharge points at least
once per calendar week.
Method for sampling turbidity:
Check the analysis method you will use:
Table 8 — Turbidity Sampling Method
❑
Turbidity Meter/Turbidimeter (required for disturbances 5 acres or greater in size)
❑
Transparency Tube (option for disturbances less than 1 acre and up to 5 acres in size)
The benchmark for turbidity value is 25 nephelometric turbidity units (NTU) and a transparency
less than 33 centimeters.
Page 1 19
If the discharge's turbidity is 26 to 249 NTU or the transparency is less than 33 cm but equal to
or greater than 6 cm, the following steps will be conducted:
1. Review the SWPPP for compliance with Special Condition S9. Make appropriate
revisions within 7 days of the date the discharge exceeded the benchmark.
2. Immediately begin the process to fully implement and maintain appropriate source
control and/or treatment BMPs as soon as possible. Address the problems within 10
days of the date the discharge exceeded the benchmark. If installation of necessary
treatment BMPs is not feasible within 10 days, Ecology may approve additional time
when the Permittee requests an extension within the initial 10-day response period.
3. Document BMP implementation and maintenance in the site log book.
If the turbidity exceeds 250 NTU or the transparency is 6 cm or less at any time, the following
steps will be conducted:
Telephone or submit an electronic report to the applicable Ecology Region's
Environmental Report Tracking System (ERTS) within 24 hours.
• Central Region (Benton, Chelan, Douglas, Kittitas, Klickitat, Okanogan,
Yakima): (509) 575-2490 or
http://www.ecy.wa.gov/programs/spills/forms/nerts online/CRO nerts online.html
• Eastern Region (Adams, Asotin, Columbia, Ferry, Franklin, Garfield, Grant,
Lincoln, Pend Oreille, Spokane, Stevens, Walla Walla, Whitman): (509) 329-3400
or http://www.ecy.wa.gov/programs/spills/forms/nerts online/ERO nerts online.html
• Northwest Region (King, Kitsap, Island, San Juan, Skagit, Snohomish,
Whatcom): (425) 649-7000 or
http://www.ecy.wa.gov/programs/spills/forms/nerts online/NWRO nerts online.html
• Southwest Region (Clallam, Clark, Cowlitz, Grays Harbor, Jefferson, Lewis,
Mason, Pacific, Pierce, Skamania, Thurston, Wahkiakum,): (360) 407-6300 or
http://www.ecy.wa.gov/programs/spills/forms/nerts online/SWRO nerts online.html
2. Immediately begin the process to fully implement and maintain appropriate source
control and/or treatment BMPs as soon as possible. Address the problems within 10
days of the date the discharge exceeded the benchmark. If installation of necessary
treatment BMPs is not feasible within 10 days, Ecology may approve additional time
when the Permittee requests an extension within the initial 10-day response period
3. Document BMP implementation and maintenance in the site log book.
4. Continue to sample discharges daily until one of the following is true:
• Turbidity is 25 NTU (or lower).
• Transparency is 33 cm (or greater).
• Compliance with the water quality limit for turbidity is achieved.
0 1 - 5 NTU over background turbidity, if background is less than 50 NTU
0 1 % - 10% over background turbidity, if background is 50 NTU or greater
• The discharge stops or is eliminated.
Page 120
4.2.2 pH Sampling
Less than 1000 CY is anticipated being poured over the life of the project.
pH monitoring is required for "Significant concrete work" (i.e., greater than 1000 cubic yards
poured concrete over the life of the project). The use of recycled concrete or engineered soils
(soil amendments including but not limited to Portland cement -treated base [CTB], cement kiln
dust [CKD] or fly ash) also requires pH monitoring.
For significant concrete work, pH sampling will start the first day concrete is poured and
continue until it is cured, typically three (3) weeks after the last pour.
For engineered soils and recycled concrete, pH sampling begins when engineered soils or
recycled concrete are first exposed to precipitation and continues until the area is fully
stabilized.
If the measured pH is 8.5 or greater, the following measures will be taken:
1. Prevent high pH water from entering storm sewer systems or surface water.
2. Adjust or neutralize the high pH water to the range of 6.5 to 8.5 su using appropriate
technology such as carbon dioxide (CO2) sparging (liquid or dry ice).
3. Written approval will be obtained from Ecology prior to the use of chemical treatment
other than CO2 sparging or dry ice.
Method for sampling pH:
Check the analysis method you will use: N/A
Table 9 — pH Sampling Method
❑
pH meter
❑
pH test kit
❑
Wide range pH indicator paper
Page 121
5 Discharges to 303(d) or Total Maximum Daily Load (TMDL)
Waterbodies
5.1 303(d) Listed Waterbodies
Is the receiving water 303(d) (Category 5) listed for turbidity, fine sediment, phosphorus, or pH?
❑ Yes ❑ No
List the impairment(s):
N/A
5.2 TMDL Waterbodies
Waste Load Allocation for CWSGP discharges:
Describe the method(s) for TMDL compliance:
List and describe BMPs:
Discharges to TMDL receiving waterbodies will meet in -stream water quality criteria at the point
of discharge.
The Construction Stormwater General Permit Proposed New Discharge to an Impaired Water
Body form is included in Appendix F.
Page 122
6 Reporting and Record Keeping
6.1 Record Keeping
This section does not need to be filled out. It is a list of reminders for the permittee.
6.1.1 Site Log Book
A site log book will be maintained for all on -site construction activities and will include:
• A record of the implementation of the SWPPP and other permit requirements
• Site inspections
• Sample logs
6.1.2 Records Retention
Records will be retained during the life of the project and for a minimum of three (3) years
following the termination of permit coverage in accordance with Special Condition S5.0 of the
CSWGP.
Permit documentation to be retained on -site:
• CSWGP
• Permit Coverage Letter
• SWPPP
• Site Log Book
Permit documentation will be provided within 14 days of receipt of a written request from
Ecology. A copy of the SWPPP or access to the SWPPP will be provided to the public when
requested in writing in accordance with Special Condition S5.G.2.b of the CSWGP.
6.1.3 Updating the SWPPP
The SWPPP will be modified if:
• Found ineffective in eliminating or significantly minimizing pollutants in stormwater
discharges from the site.
• There is a change in design, construction, operation, or maintenance at the construction
site that has, or could have, a significant effect on the discharge of pollutants to waters
of the State.
The SWPPP will be modified within seven (7) days if inspection(s) or investigation(s) determine
additional or modified BMPs are necessary for compliance. An updated timeline for BMP
implementation will be prepared.
Page 123
6.2 Reporting
6.2.1 Discharge Monitoring Reports
Cumulative soil disturbance is one (1) acre or larger; therefore, Discharge Monitoring
Reports (DMRs) will be submitted to Ecology monthly. If there was no discharge during a given
monitoring period the DMR will be submitted as required, reporting "No Discharge". The DMR
due date is fifteen (15) days following the end of each calendar month.
DMRs will be reported online through Ecology's WQWebDMR System.
To sign up for WQWebDMR go to:
http://www.ecV.wa.gov/programs/wq/permits/paris/webdmr.html
6.2.2 Notification of Noncompliance
If any of the terms and conditions of the permit is not met, and the resulting noncompliance may
cause a threat to human health or the environment, the following actions will be taken:
1. Ecology will be notified within 24-hours of the failure to comply by calling the applicable
Regional office ERTS phone number (Regional office numbers listed below).
2. Immediate action will be taken to prevent the discharge/pollution or otherwise stop or
correct the noncompliance. If applicable, sampling and analysis of any noncompliance
will be repeated immediately and the results submitted to Ecology within five (5) days of
becoming aware of the violation.
3. A detailed written report describing the noncompliance will be submitted to Ecology
within five (5) days, unless requested earlier by Ecology.
Specific information to be included in the noncompliance report is found in Special Condition
S5.F.3 of the CSWGP.
Anytime turbidity sampling indicates turbidity is 250 NTUs or greater, or water transparency is 6
cm or less, the Ecology Regional office will be notified by phone within 24 hours of analysis as
required by Special Condition S5.A of the CSWGP.
• Northwest Region at (425) 649-7000 for Island, King, Kitsap, San Juan, Skagit,
Snohomish, or Whatcom County
Include the following information:
1. Your name and / Phone number
2. Permit number
3. City / County of project
4. Sample results
Page 124
5. Date / Time of call
6. Date / Time of sample
7. Project name
In accordance with Special Condition S4.D.5.b of the CSWGP, the Ecology Regional office will
be notified if chemical treatment other than CO2 sparging is planned for adjustment of high pH
water.
Page 125
Append ix/Glossary
A. Site Map:
414, IV,3
126
B. BMP Detail
Page 127
Joints in geotextile fabric shall be
spliced at posts. Use staples, wire rings
or equivalent to attach fabric to posts
2"x2" by 14 Ga. wire or equivalent,
if standard strength fabric used
I
Minimum 6' max
4"x4" trench
u
Post spacing may be increased
to 8' if wire backing is used 2"x2" wood posts, steel
fence posts, or equivalent
00111!
q9WFW&
DEPARTMENT OF
ECOLOGY
2"x2" by 14 Ga. wire or equivalent,
if standard strength fabric used
Geotextile fabric
Backfill trench with
native soil or %4" -
1.5" washed gravel
Minimum
4"x4" trench
2"x2" wood posts, steel
fence posts, or equivalent
2' min
min
Silt Fence
NOT TO SCALE
Revised July 2017
Please see http://www.ecy.wa.gov/copyright.html for copyright notice including permissions,
limitation of liability, and disclaimer.
State of Washington
NOT TO SCALE
cu
roadsi
Notes:
1. Driveway shall meet
the requirements of the
permitting agency.
2. It is recommended that
the access be crowned
so that runoff drains off
the pad.
Oka
q9WFW&
DEPARTMENT OF
ECOLOGY
12 minimum thickness
lb'min.
Provide full width
of ingress/egress
area
Stabilized Construction Access
Revised June 2018
Please see http://www.ecy.wa.gov/copyright.html for copyright notice including permissions,
limitation of liability, and disclaimer.
State of Washington
C. Correspondence
Ecology
EPA
Local Government
Page 130
D. Site Inspection Form
Page 131
2022 Construction General Permit Site Inspection Report
Project Name:
NPDES ID Number:
Section A — General Information
(If necessary, complete additional inspection reports for each separate inspection location.)
Inspector Information
Inspector Name:
Title:
Company Name:
Email:
Address:
Phone Number:
Inspection Details
Inspection Date:
Inspection Location:
Inspection Start Time:
Inspection End Time:
Current Phase of Construction:
Weather Conditions During Inspection:
Did you determine that any portion of your site was unsafe for inspection per CGP Part 4.5? ❑ Yes ❑ No
If "Yes," provide the following information:
Location of unsafe conditions:
The conditions that prevented you inspecting this location:
Indicate the required inspection frequency: (Check all that apply. You may be subject to different inspection frequencies in different areas of the site.)
Standard Frequency (CGP Part 4.2):
❑ At least once every 7 calendar days; OR
❑ Once every 14 calendar days and within 24 hours of the occurrence of either:
• A storm event that produces 0.25 inches or more of rain within a 24-hour period, or
• A snowmelt discharge from a storm event that produces 3.25 inches or more of snow within a 24-hour period
Increased Frequency (CGP Part 4.3.1) (If site discharges to sediment or nutrient -impaired waters or to waters designated as Tier 2, Tier 2.5, or Tier 3):
❑ Once every 7 calendar days and within 24 hours of the occurrence of either:
• A storm event that produces 0.25 inches or more of rain within a 24-hour period, or
• A snowmelt discharge from a storm event that produces 3.25 inches or more of snow within a 24-hour period
Page 1 of 7
2022 Construction General Permit Site Inspection Report Project Name:
NPDES ID Number:
Reduced Frequency (CGP Part 4.4):
❑ For stabilized areas: Twice during first month, no more than 14 calendar days apart, then once per month after first month until permit coverage is
terminated
❑ For stabilized areas on "linear construction sites": Twice during first month, no more than 14 calendar days apart; then once more within 24 hours of
the occurrence of either:
• A storm event that produces 0.25 inches or more of rain within a 24-hour period, or
• A snowmelt discharge from a storm event that produces 3.25 inches or more of snow within a 24-hour period
❑ For arid, semi -arid, or drought -stricken areas during seasonally dry periods or during drought: Once per month and within 24 hours of the occurrence
of either:
• A storm event that produces 0.25 inches or more of rain within a 24-hour period, or
• A snowmelt discharge from a storm event that produces 3.25 inches or more of snow within a 24-hour period
❑ For frozen conditions where construction activities are being conducted: Once per month
Was this inspection triggered by a storm event producing 0.25 inches or more of rain within a 24-hour period? ❑ Yes ❑ No
If "Yes," how did you determine whether the storm produced 0.25 inches or more of rain?
❑ On -site rain gauge
❑ Weather station representative of site.
Weather station location:
Total rainfall amount that triggered the inspection (inches):
Was this inspection triggered by a snowmelt discharge from a storm event producing 3.25 inches or more of snow within a 24-hour period? ❑ Yes ❑ No
If "Yes," how did you determine whether the storm produced 3.25 inches or more of snow?
❑ On -site rain gauge
❑ Weather station representative of site.
Weather station location:
Total snowfall amount that triggered the inspection (inches):
Page 2 of 7
2022 Construction General Permit Site Inspection Report Project Name:
NPDES ID Number:
Section B - Condition and Effectiveness of Erosion and Sediment (E&S) Controls (CGP Part 2.2)
(Insert additional rows if needed)
If "Yes," How Many
Conditions
Conditions
Times (Including
Conditions
Date on Which
Type and Location of US
Requiring Routine
This Occurrence)
Condition First
Description of Conditions Observed
Control
Maintenance?'
Has This Condition
Corrective
Observed (If
Been Identified?
Action?2, s
Applicable)?
1.
❑ Yes ❑ No
❑ Yes ❑ No
2.
❑ Yes ❑ No
❑ Yes ❑ No
3.
❑ Yes ❑ No
❑ Yes ❑ No
4.
❑ Yes ❑ No
❑ Yes ❑ No
5.
❑ Yes ❑ No
❑ Yes ❑ No
If the same routine maintenance was found to be necessary three or more times for the same control at the same location (including this occurrence),
follow the corrective action requirements and record the required information in your corrective action log, or describe here why you believe the specific
condition should still be addressed as routine maintenance:
1 Routine maintenance includes minor repairs or other upkeep performed to ensure that the site's stormwater controls remain in effective operating condition, not including
significant repairs or the need to install a new or replacement control. Routine maintenance is also required for specific conditions: (1) for perimeter controls, whenever sediment
has accumulated to half or more the above -ground height of the control (CGP Part 2.2.3.c.i); (2) where sediment has been tracked -out from the site onto paved roads,
sidewalks, or other paved areas (CGP Part 2.2.4.d); (3) for inlet protection measures, when sediment accumulates, the filter becomes clogged, and/or performance is
compromised (CGP Part 2.2.10.b); and (4) for sediment basins, as necessary to maintain at least half of the design capacity of the basin (CGP Part 2.2.12.f)
2 Corrective actions are triggered only for specific conditions (CGP Part 5. 1):
1. A stormwater control needs a significant repair or a new or replacement control is needed, or, in accordance with Part 2.1.4.c, you find it necessary to repeatedly (i.e., three
(3) or more times) conduct the same routine maintenance fix to the same control at the same location (unless you document in your inspection report under Part 4.7.1.c that
the specific reoccurrence of this same problem should still be addressed as a routine maintenance fix under 2.1.4); or
2. A stormwater control necessary to comply with the requirements of this permit was never installed, or was installed incorrectly; or
3. Your discharges are not meeting applicable water quality standards; or
4. A prohibited discharge has occurred (see CGP Part 1.3); or
5. During the discharge from site dewatering activities:
a. The weekly average of your turbidity monitoring results exceeds the 50 NTU benchmark (or alternate benchmark if approved by EPA pursuant to Part 3.3.2.b); or
b. You observe or you are informed by EPA, State, or local authorities of the presence of the conditions specified in Part 4.6.3.e.
3If a condition on your site requires a corrective action, you must also fill out a corrective action log found at https://www.epa.gov/npdes/construction-general-permit-
resources-tools-and-templates. See CGP Part 5.4 for more information.
Page 3 of 7
2022 Construction General Permit Site Inspection Report
Project Name:
NPDES ID Number:
Section C - Condition and Effectiveness of Pollution Prevention (P2) Practices and Controls (CGP Part 2.3)
(Insert additional rows if needed)
If "Yes," How Many
Conditions
Date on Which
Type and Location of P2
Conditions
Times (Including
Requiring
Condition First
Practices and Controls
Requiring Routine
This Occurrence)
Corrective
Observed (If
Description of Conditions Observed
Maintenance?'
Has This Condition
Action?2 3
Applicable)?
Been Identified?
1.
❑ Yes ❑ No
❑ Yes ❑ No
2.
❑ Yes ❑ No
❑ Yes ❑ No
3.
❑ Yes ❑ No
❑ Yes ❑ No
4.
❑ Yes ❑ No
❑ Yes ❑ No
5.
❑ Yes ❑ No
❑ Yes ❑ No
If the same routine maintenance was found to be necessary three or more times for the same control at the same location (including this occurrence),
follow the corrective action requirements and record the required information in your corrective action log, or describe here why you believe the specific
condition should still be addressed as routine maintenance:
Page 4 of 7
2022 Construction General Permit Site Inspection Report
Project Name:
NPDES ID Number:
Section D - Stabilization of Exposed Soil (CGP Part 2.2.14)
(Insert additional rows if needed)
Specific Location That Has
Stabilization MethodStabilization
Final Stabilization
Final Stabilization
Been or Will Be Stabilized
and Applicable
Initiated?
Criteria Met?
Photos Taken?
Notes
Deadline
1.
❑ Yes ❑ No
❑ Yes ❑ No
❑ Yes ❑ No
If "Yes," date
If "Yes," date
initiated:
criteria met:
2.
❑ Yes ❑ No
❑ Yes ❑ No
❑ Yes ❑ No
If "Yes," date
If "Yes," date
initiated:
criteria met:
3.
❑ Yes ❑ No
❑ Yes ❑ No
❑ Yes ❑ No
If "Yes," date
If "Yes," date
initiated:
criteria met:
4.
❑ Yes ❑ No
❑ Yes ❑ No
❑ Yes ❑ No
If "Yes," date
If "Yes," date
initiated:
criteria met:
5.
❑ Yes ❑ No
❑ Yes ❑ No
❑ Yes ❑ No
If "Yes," date
If "Yes," date
initiated:
criteria met:
Page 5 of 7
2022 Construction General Permit Site Inspection Report
Project Name:
NPDES ID Number:
Section E - Description of Discharges (CGP Part 4.6.2)
(Insert additional rows if needed) --7a
Was a discharge (not including dewatering) occurring from any part of your site at the time of the inspection?4 ❑ Yes ❑ No
If "Yes," for each point of discharge, document the following:
• The visual quality of the discharge.
• The characteristics of the discharge, including color; odor; floating, settled, or suspended solids; foam; oil sheen; and other indicators of stormwater
pollutants.
• Signs of the above pollutant characteristics that are visible from your site and attributable to your discharge in receiving waters or in other
constructed or natural site drainage features.
Discharge Location
Observations
1.
2.
3.
4.
5.
4 If a dewatering discharge was occurring, you must conduct a dewatering inspection pursuant to CGP Part 4.3.2 and complete a separate dewatering inspection report.
Page 6 of 7
2022 Construction General Permit Site Inspection Report
Project Name:
NPDES ID Number:
Section F - Signature and Certification (CGP Part 4.7.2)
"I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system
designed to assure that qualified personnel properly gathered and evaluated the information contained therein. Based on my inquiry of the person or
persons who manage the system, or those persons directly responsible for gathering the information, the information contained is, to the best of my
knowledge and belief, true, accurate, and complete. I have no personal knowledge that the information submitted is other than true, accurate, and
complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing
violations."
MANDATORY: Signature of Operator or "Duly Authorized Representative:"
Signature:
Date:
Printed Name:
Affiliation:
OPTIONAL: Signature of Contractor or Subcontractor
Signature:
Date:
Printed Name:
Affiliation:
Page 7 of 7
General Tips for Using This Template
This Site Inspection Report Template is provided to assist you in preparing site inspection reports for EPA's 2022 Construction General Permit (CGP). If you are
covered under the 2022 CGP, you can use this template to create a site inspection report form that is customized to the specific circumstances of your site
and that complies with the minimum reporting requirements of Part 4.7 of the permit. Note that the use of this form is optional; you may use your own site
inspection report form provided it includes the minimum information required in Part 4.7 of the CGP.
This template does not address the CGP's inspection reporting requirements related to dewatering activities. A separate inspection template has been
developed specifically for dewatering activities and is available at https://www.epa.gov/npdes/construction-general-permit-resources-tools-and-templates.
Keep in mind that this document is a template and not an "off -the -shelf" inspection report that is ready to use without some modification. You must first
customize this form to include the specifics of your project in order for it to be useable for your inspection reports. Once you have entered all of your site -
specific information into the blank fields, you may use this form to complete inspection reports.
The following tips for using this template will help you ensure that the minimum permit requirements are met:
• Review the inspection requirements. Before you start developing your inspection report form, read the CGP's Part 4 inspection requirements. This will
ensure that you have a working understanding of the permit's underlying inspection requirements.
• Complete all required blank fields. Fill out all blank fields. Only by filling out all fields will the template be compliant with the requirements of the permit.
(Note: Where you do not need the number of rows provided in the template form for your inspection, you may delete these or cross them off as you see
fit. Or, if you need more space to document your findings, you may insert additional rows in the electronic version of this form or use the bottom of the
page in the field version of this form.)
• Use your site map to document inspection findings. In several places in the template, you are directed to specify the location of certain features of your
site, including where stormwater controls are installed and where you will be stabilizing exposed soil. You are also asked to fill in location information for
unsafe conditions and the locations of any discharges occurring during your inspections. Where you are asked for location information, EPA encourages
you to reference the point on your SWPPP site map that corresponds to the requested location on the inspection form. Using the site map as a tool in this
way will help you conduct efficient inspections, will assist you in evaluating problems found, and will ensure proper documentation.
• Complete the inspection report within 24 hours of completing a site inspection. You must complete an inspection report in accordance with Part 4.7.1 of
the CGP.
• Include the inspection form with your SWPPP. Once your form is complete, make sure to include a copy of the inspection form in your SWPPP in
accordance with Part 7.2.7.e of the CGP.
• Retain copies of all inspection reports with your records. You must also retain in your records copies of all inspection reports in accordance with the
requirements in Part 4.7.3 of the CGP. These reports must be retained for at least 3 years from the date your permit coverage expires or is terminated in
accordance with the requirements in Part 4.7.4 of the CGP.
Instructions for Section A
Inspector Name
Enter the name of the person that conducted the inspection. Include the person's contact information (title, affiliated company name, address, email,
and phone number).
Inspection Date and Time
Enter the date you performed the inspection and the time you started and ended the inspection.
Weather Conditions During Inspection
Enter the weather conditions occurring during the inspection, e.g., sunny, overcast, light rain, heavy rain, snowing, icy, windy.
Current Phase of Construction
If this project is being completed in more than one phase, indicate which phase it is currently in.
Inspection Location
If your project has multiple locations where you conduct separate inspections, specify the location where this inspection is being conducted. If only one
inspection is conducted for your entire project, enter "Entire Site." If necessary, complete additional inspection report forms for each separate inspection
location.
Unsafe Conditions for Inspection (CGP Part 4.5.7)
Inspections are not required where a portion of the site or the entire site is subject to unsafe conditions. These conditions should not regularly occur and
should not be consistently present on a site. Generally, unsafe conditions are those that render the site (or a portion of it) inaccessible or that would pose a
significant probability of injury to applicable personnel. Examples could include severe storm or flood conditions, high winds, and downed electrical wires.
If your site, or a portion of it, is affected by unsafe conditions during the time of your inspection, provide a description of the conditions that prevented you
from conducting the inspection and what parts of the site were affected. If the entire site was considered unsafe, specify the location as "Entire Site."
Inspection Frequency
Check all the inspection frequencies that apply to your project. Note that you may be subject to different inspection frequencies in different areas of your
site.
Inspection Triggered by a Storm Event
If you were required to conduct this inspection because of a storm event that produced 0.25 inches or more of rain within a 24-hour period, indicate whether
you relied on an on -site rain gauge or a nearby weather station (and where the weather station is located). Also, specify the total amount of rainfall for this
specific storm event.
If you were required to conduct this inspection because of a snowmelt discharge from a storm event that produced 3.25 inches or more of snow within a 24-
hour period, then indicate whether you relied on an on -site measurement or a nearby weather station (and where the weather station is located). Also,
specify the total amount of snowfall for this specific storm event.
Instructions for Section B
Type and Location of Erosion and Sediment (E&S) Controls
Provide a list of all erosion and sediment (E&S) controls that your SWPPP indicates will be installed and implemented at your site. This list must include at a
minimum all E&S controls required by CGP Part 2.2. Include also any natural buffers established under CGP Part 2.2.1. Buffer requirements apply if your
project's earth -disturbing activities will occur within 50 feet of a discharge to receiving water. You may group your E&S controls on your form if you have
several of the same type of controls (e.g., you may group "Inlet Protection Measures," "Perimeter Controls," and "Stockpile Controls" together on one line),
but if there are any problems with a specific control, you must separately identify the location of the control, whether routine maintenance or corrective
action is necessary, and in the notes section you must describe the specifics about the problem you observed.
Conditions Requiring Routine Maintenance?
Answer "Yes" if the E&S control requires routine maintenance as defined in footnote 1 of this template. Note that in many cases, "Yes" answers are expected
and indicate a project with an active operation and maintenance program. You should also answer "Yes" if work to fix the problem is still ongoing from the
previous inspection, though necessary work must be initiated immediately and completed by the end of the next business day or within seven calendar days
if documented in accordance with CGP Part 2.1.4.b.
If "Yes," How Many Times (Including this Occurrence) Has this Condition Been Identified?
Indicate how many times the routine maintenance has been required for the same control at the same location.
Conditions Requiring Corrective Action?
Answer "Yes" if you found any of the conditions listed in footnote 2 in this template to be present during your inspection (CGP Part 5.1). If you answer "Yes,"
you must take corrective action and complete a corrective action log, found at https://www.epa.gov/npdes/construction-general-permit-resources-tools-
and-templates. You should also answer "Yes" if work to fix the problem from a previous inspection is still ongoing, though the operator must comply with the
corrective action deadlines in CGP Part 5.2.
Date on Which Condition First Observed (if Applicable)?
Provide the date on which the condition that triggered the need for routine maintenance or corrective action was first identified. If the condition was just
discovered during this inspection, enter the inspection date. If the condition is a carryover from a previous inspection, enter the original date of the
condition's discovery.
Description of Conditions Observed
For each E&S control and the area immediately surrounding it, describe whether the control is properly installed and whether it appears to be working to
minimize sediment discharge. Indicate also whether a new or modified control is necessary to comply with the permit. Describe any problem condition(s)
you observed such as the following:
1. Failure to install or to properly install a required E&S control
2. Damage or destruction to an E&S control caused by vehicles, equipment, or personnel, a storm event, or other event
3. Mud or sediment deposits found downslope from E&S controls, including in receiving waters, or on nearby streets, curbs, or open conveyance channels
4. Sediment tracked out onto paved areas by vehicles leaving construction site
5. Noticeable erosion or sedimentation at discharge outlets or at adjacent streambanks or channels
6. Erosion of the site's sloped areas (e.g., formation of rills or gullies)
7. E&S control is no longer working due to lack of maintenance
8.Other incidents of noncompliance
Describe also why you think the problem condition(s) occurred as well as actions (e.g., routine maintenance or corrective action) you will take or have taken
to fix the problem.
For buffer areas, make note of whether they are marked off as required, whether there are signs of construction disturbance within the buffer, which is
prohibited under the CGP, and whether there are visible signs of erosion resulting from discharges through the area.
If routine maintenance or corrective action is required, briefly note the reason. If routine maintenance or corrective action has been completed, make a
note of the date it was completed and what was done. If corrective action is required, note that you will need to complete a separate corrective action log
describing the condition and your work to fix the problem.
Routine Maintenance Need Has Been Found to be Necessary Three (3) or More Times for the Same Control at the Same Location (Including this Occurrence)
If routine maintenance has been required three (3) or more times for the same control at the same location, the permit requires (CGP Part 2.1.4.c) you to fix
the problem using the corrective action procedures in CGP Part 5 or to document why you believe the reoccurring problem can be addressed as a routine
maintenance fix. If you believe the problem can continue to be fixed as routine maintenance, describe why you believe the specific condition should still be
addressed as routine maintenance.
Instructions for Section C
Type and Location of Pollution Prevention (P2) Practices and Controls
Provide a list of all pollution prevention (P2) practices and controls that are implemented at your site. This list must include all P2 practices and controls
required by CGP Part 2.3 and those that are described in your SWPPP.
Conditions Requiring Routine Maintenance?
Answer "Yes" if the P2 practice or control requires routine maintenance as defined in footnote 1 of this template. Note that in many cases, "Yes" answers are
expected and indicate a project with an active operation and maintenance program. You should also answer "Yes" if work to fix the problem is still ongoing
from the previous inspection, though necessary work must be initiated immediately and completed by the end of the next business day or within seven
calendar days if documented in accordance with CGP Part 2.1.4.b.
If "Yes," How Many Times (Including this Occurrence) Has this Condition Been Identified?
Indicate how many times the routine maintenance has been required for the same practice or control at the same location.
Conditions Requiring Corrective Action?
Answer "Yes" if you found any of the conditions listed in footnote 2 in this template to be present during your inspection (CGP Part 5.1). If you answer "Yes,"
you must take corrective action and complete a corrective action log, found at https://www.epa.gov/npdes/construction-general-permit-resources-tools-
and-templates. You should also answer "Yes" if work to fix the problem from a previous inspection is still ongoing, though the operator must comply with the
corrective action deadlines in CGP Part 5.2.
Date on Which Condition First Observed (If Applicable)?
Provide the date on which the condition that triggered the need for maintenance or corrective action was first identified. If the condition was just
discovered during this inspection, enter the inspection date. If the condition is a carryover from a previous inspection, enter the original date of the
condition's discovery.
Description of Conditions Observed
For each P2 control and the area immediately surrounding it, describe whether the control is properly installed, and whether it appears to be working to
minimize or eliminate pollutant discharges. Indicate also whether a new or modified control is necessary to comply with the permit. Describe any problem
conditions) you observed such as the following:
1. Failure to install or to properly install a required P2 control
2. Damage or destruction to a P2 control caused by vehicles, equipment, or personnel, or a storm event
3. Evidence of a spill, leak, or other type of pollutant discharge, or failure to have properly cleaned up a previous spill, leak, or other type of pollutant
discharge
4. Spill response supplies are absent, insufficient, or not where they are supposed to be located
5. Improper storage, handling, or disposal of chemicals, building materials or products, fuels, or wastes
6. P2 control is no longer working due to lack of maintenance
7.Other incidents of noncompliance
Describe also why you think the problem conditions) occurred as well as actions (e.g., routine maintenance or corrective action) you will take or have taken
to fix the problem.
If routine maintenance or corrective action is required, briefly note the reason. If routine maintenance or corrective action has been completed, make a
note of the date it was completed and what was done. If corrective action is required, note that you will need to complete a separate corrective action log
describing the condition and your work to fix the problem.
Routine Maintenance Need Was Found to be Necessary Three (3) or More Times for the Same Control at the Same Location (Including this Occurrence)
If routine maintenance has been required three (3) or more times for the same control at the same location, the permit requires (CGP Part 2.1.4.c) you to fix
the problem using the corrective action procedures in CGP Part 5 or to document why you believe the reoccurring problem can be addressed as a routine
maintenance fix. If you believe the problem can continue to be fixed as routine maintenance, describe why you believe the specific condition should still be
addressed as routine maintenance.
Instructions for Section D
Specific Location That Has Been or Will Be Stabilized
List all areas where soil stabilization is required to begin because construction work in that area has permanently stopped or temporarily stopped (i.e., work
will stop for 14 or more days), and all areas where stabilization has been implemented (CGP Part 2.2.14).
Stabilization Method and Applicable Deadline
For each area, specify the method of stabilization (e.g., hydroseed, sod, planted vegetation, erosion control blanket, mulch, rock).
Specify also which of the following stabilization deadlines apply to this location:
1.5 acres or less of land disturbance occurring at any one time at site: Complete no later than 14 calendar days after stabilization initiated.
2. More than 5 acres of land disturbance occurring at any one time at site: Complete no later than 7 calendar days after stabilization initiated.
3. Arid, semi -arid, and drought -stricken areas: See CGP Part 2.2.14.b.i.
4. Unforeseen circumstances: See CGP Part 2.2.14.b.ii.
5. Discharges to a sediment- or nutrient -impaired water or to a water identified as Tier 2, 2.5, or 3 for antidearadation purposes: Complete no later than 7
days after stabilization initiated.
Stabilization Initiated?
For each area, indicate whether stabilization has been initiated. If "Yes," then enter the date stabilization was initiated.
Final Stabilization Criteria Met?
For each area, indicate whether the final stabilization criteria in CGP Part 2.2.14.c have been met. If "Yes," then enter the date final stabilization criteria were
met.
Final Stabilization Photos Taken?
Answer "Yes" if you have taken photos before and after meeting the stabilization criteria as required in CGP Part 8.2.1.a.
Notes
For each area where stabilization has been initiated, describe the progress that has been made and what additional actions are necessary to complete
stabilization. Note the effectiveness of stabilization in preventing erosion. If stabilization has been initiated but not completed, make a note of the date it is to
be completed. If stabilization has been completed, make a note of the date it was completed. If stabilization has not yet been initiated, make a note of the
date it is to be initiated and the date it is to be completed.
Instructions for Section E
You are only required to complete this section if a discharge is occurring at the time of the inspection (CGP Part 4.6.2).
Was a discharge (not including dewatering) occurring from any part of your site at the time of the inspection?
During your inspection, examine all points of discharge from your site, and determine whether a discharge is occurring. If a dewatering discharge was
occurring, you must conduct a dewatering inspection pursuant to CGP Part 4.3.2. If there is a discharge, answer "Yes" and complete the questions below
regarding the specific discharge. If there is not a discharge, answer "No" and skip to the next page.
Discharge Location (Repeat as necessary if there are multiple points of discharge.)
Specify the location on your site where the discharge is occurring. The location may be an outlet from a stormwater control or constructed stormwater
channel, a discharge into a storm sewer inlet, or a specific point on the site. Be as specific as possible; it is recommended that you refer to a precise point on
your site map.
Observations
Document the visual quality of the discharge and take note of the characteristics of the stormwater discharge, including color; odor; floating, settled, or
suspended solids; foam; oily sheen; and other indicators of stormwater pollutants. Also, document signs of these same pollutant characteristics that are visible
from your site and attributable to your discharge in receiving waters or in other constructed or natural site drainage features.
Instructions for Section F
Each inspection report must be signed and certified to be considered complete (CGP Part 4.7.2).
Operator or "Duly Authorized Representative" - MANDATORY (CGP Appendix G Part G.1 1.2 and CGP Appendix H Section X)
At a minimum, the site inspection report must be signed by either (1) the person who signed the NOI, or (2) a duly authorized representative of that person.
The following requirements apply:
If the signatory will be the person who signed the NOI for permit coverage, as a reminder, that person must be one of the following types of individuals:
For a corporation: By a responsible corporate officer. For the purpose of this subsection, a responsible corporate officer means: (i) a president, secretary,
treasurer, or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy- or decision -
making functions for the corporation, or (ii) the manager of one or more manufacturing, production, or operating facilities, provided, the manager is
authorized to make management decisions which govern the operation of the regulated facility including having the explicit or implicit duty of making
major capital investment recommendations, and initiating and directing other comprehensive measures to assure long term environmental compliance
with environmental laws and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and
accurate information for permit application requirements; and where authority to sign documents has been assigned or delegated to the manager in
accordance with corporate procedures.
• For a partnership or sole proprietorship: By a general partner or the proprietor, respectively.
• For a municipality, State, Federal, or other public agency: By either a principal executive officer or ranking elected official. For purposes of this
subsection, a principal executive officer of a Federal agency includes (i) the chief executive officer of the agency, or (ii) a senior executive officer
having responsibility for the overall operations of a principal geographic unit of the agency (e.g., Regional Administrator of EPA).
If the signatory will be a duly authorized representative, the following requirements must be met:
• The authorization is made in writing by the person who signed the NOI (see above);
• The authorization specifies either an individual or a position having responsibility for the overall operation of the regulated facility or activity such as the
position of plant manager, operator of a well or a well field, superintendent, position of equivalent responsibility, or an individual or position having overall
responsibility for environmental matters for the company. (A duly authorized representative may thus be either a named individual or any individual
occupying a named position); and
• The signed and dated written authorization is included in the SWPPP. A copy must be submitted to EPA, if requested.
Sign, date and print your name and affiliation.
Contractor or Subcontractor - OPTIONAL
Where you rely on a contractor or subcontractor to complete the site inspection report, you should consider requiring the individual(s) to sign and certify
each report. Note that this does not relieve you, the permitted operator, of the requirement to sign and certify the site inspection report as well. If applicable,
sign, date, and print your name and affiliation.
Note
While EPA has made every effort to ensure the accuracy of all instructions contained in this template, it is the permit, not this template, that determines the
actual obligations of regulated construction stormwater discharges. In the event of a conflict between this template and any corresponding provision of the
CGP, you must abide by the requirements in the permit. EPA welcomes comments on this Site Inspection Report Template at any time and will consider those
comments in any future revision. You may contact EPA for CGP-related inquiries at cqp@epa.gov
E. Construction Stormwater General Permit (CSWGP)
Download the CSWGP:
http://www. ecy.wa.gov/programs/wq/stormwater/construction/index. html
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F. 303(d) List Waterbodies / TMDL Waterbodies Information
Proposed New Discharge to an Impaired Water Body form
SWPPP Addendum addressing impairment
G. Contaminated Site Information
H. Engineering Calculations
No sediment traps will be installed for this project
Sediment Traps
2080 ft 2
SA= FS (Qz/ Vs) 'JS (QZ)
FS= 2 Factor of Safety
Vs= 0.00096 ft/sec Settling Velocity
Q2= 0.0584 15-min Peak from
WWHM2012
WWHM Input
Landcover Basin A
Type (AC)
Imp. Area
Grass
Total Area
Soil Type = Till
Used 15 min. Time series
Results
Basin A
Q 10 (cfs)
SA REQD (fe)
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