HomeMy WebLinkAbout6-27-23 Central Maintenace FacilityConstruction Stormwater Site Inspection Form
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Project Name King County Parks
Central Maintenance
Facility
Permit # WAR310106 Inspection Date 6/27/23 Time 12:00
PM
Name of Certified Erosion Sediment Control Lead (CESCL) or qualified inspector if less than one acre
Print Name: Alexis Lamrouex
Approximate rainfall amount since the last inspection (in inches): 0.27
Approximate rainfall amount in the last 24 hours (in inches): 0.00
Current Weather Clear Cloudy x Mist Rain Wind Fog
A. Type of inspection: Weekly x Post Storm Event Other
B. Phase of Active Construction (check all that apply):
Pre Construction/installation of erosion/sediment
controls
Clearing/Demo/Grading Infrastructure/storm/roads
Concrete pours Vertical
Construction/buildings
x Utilities
Offsite improvements Site temporary stabilized Final stabilization
C. Questions:
1. Were all areas of construction and discharge points inspected? Yes x No
2. Did you observe the presence of suspended sediment, turbidity, discoloration, or oil sheen Yes No x
3. Was a water quality sample taken during inspection? (refer to permit conditions S4 & S5) Yes No x
4. Was there a turbid discharge 250 NTU or greater, or Transparency 6 cm or less?* Yes No x
5. If yes to #4 was it reported to Ecology? Yes No x
6. Is pH sampling required? pH range required is 6.5 to 8.5. Yes No x
If answering yes to a discharge, describe the event. Include when, where, and why it happened; what action was taken,
and when.
*If answering yes to # 4 record NTU/Transparency with continual sampling daily until turbidity is 25 NTU or less/ transparency is 33
cm or greater.
Sampling Results: PH Turbidity
Date:
6/27/23
Construction Stormwater Site Inspection Form
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D. Check the observed status of all items. Provide “Action Required “details and dates.
Element # Inspection BMPs
Inspected
BMP needs
maintenance
BMP
failed
Action
required
(describe in
section F)
yes no n/a
1
Clearing
Limits
Before beginning land disturbing
activities are all clearing limits,
natural resource areas (streams,
wetlands, buffers, trees) protected
with barriers or similar BMPs? (high
visibility recommended)
x
2
Construction
Access
Construction access is stabilized
with quarry spalls or equivalent
BMP to prevent sediment from
being tracked onto roads?
x
Sediment tracked onto the road
way was cleaned thoroughly at the
end of the day or more frequent as
necessary
x
3
Control Flow
Rates
Are flow control measures installed
to control stormwater volumes and
velocity during construction and do
they protect downstream
properties and waterways from
erosion?
x
If permanent infiltration ponds are
used for flow control during
construction, are they protected
from siltation?
x
4
Sediment
Controls
All perimeter sediment controls
(e.g. silt fence, wattles, compost
socks, berms, etc.) installed, and
maintained in accordance with the
Stormwater Pollution Prevention
Plan (SWPPP).
x
Sediment control BMPs (sediment
ponds, traps, filters etc.) have been
constructed and functional as the
first step of grading.
x
Stormwater runoff from disturbed
areas is directed to sediment
removal BMP.
x
5
Stabilize
Soils
Have exposed un-worked soils
been stabilized with effective BMP
x
Construction Stormwater Site Inspection Form
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to prevent erosion and sediment
deposition?
Construction Stormwater Site Inspection Form
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Element # Inspection BMPs
Inspected
BMP needs
maintenance
BMP
failed
Action
required
(describe in
section F)
yes no n/a
5
Stabilize Soils
Cont.
Are stockpiles stabilized from erosion,
protected with sediment trapping
measures and located away from drain
inlet, waterways, and drainage
channels?
x
Have soils been stabilized at the end of
the shift, before a holiday or weekend
if needed based on the weather
forecast?
x
6
Protect
Slopes
Has stormwater and ground water
been diverted away from slopes and
disturbed areas with interceptor dikes,
pipes and or swales?
x
Is off-site storm water managed
separately from stormwater generated
on the site?
x
Is excavated material placed on uphill
side of trenches consistent with safety
and space considerations?
x
Have check dams been placed at
regular intervals within constructed
channels that are cut down a slope?
x
7
Drain Inlets
Storm drain inlets made operable
during construction are protected.
x
Are existing storm drains within the
influence of the project protected?
x
8
Stabilize
Channel and
Outlets
Have all on-site conveyance channels
been designed, constructed and
stabilized to prevent erosion from
expected peak flows?
x
Is stabilization, including armoring
material, adequate to prevent erosion
of outlets, adjacent stream banks,
slopes and downstream conveyance
systems?
x
9
Control
Pollutants
Are waste materials and demolition
debris handled and disposed of to
prevent contamination of stormwater?
x
Has cover been provided for all
chemicals, liquid products, petroleum
products, and other material?
x
Has secondary containment been
provided capable of containing 110%
of the volume?
x
Were contaminated surfaces cleaned
immediately after a spill incident?
x
Construction Stormwater Site Inspection Form
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Were BMPs used to prevent
contamination of stormwater by a pH
modifying sources?
x
Element # Inspection BMPs
Inspected
BMP needs
maintenance
BMP
failed
Action
required
(describe in
section F)
yes no n/a
9
Cont.
Wheel wash wastewater is handled
and disposed of properly.
x
10
Control
Dewatering
Concrete washout in designated areas.
No washout or excess concrete on the
ground.
x
Dewatering has been done to an
approved source and in compliance
with the SWPPP.
x
Were there any clean non turbid
dewatering discharges?
x
11
Maintain
BMP
Are all temporary and permanent
erosion and sediment control BMPs
maintained to perform as intended?
x
12
Manage the
Project
Has the project been phased to the
maximum degree practicable?
x
Has regular inspection, monitoring and
maintenance been performed as
required by the permit?
x
Has the SWPPP been updated,
implemented and records maintained?
x
13
Protect LID
Is all Bioretention and Rain Garden
Facilities protected from
sedimentation with appropriate BMPs?
x
Is the Bioretention and Rain Garden
protected against over compaction of
construction equipment and foot
traffic to retain its infiltration
capabilities?
x
Permeable pavements are clean and
free of sediment and sediment laden-
water runoff. Muddy construction
equipment has not been on the base
material or pavement.
x
Have soiled permeable pavements
been cleaned of sediments and pass
infiltration test as required by
stormwater manual methodology?
x
Heavy equipment has been kept off
existing soils under LID facilities to
retain infiltration rate.
x
Construction Stormwater Site Inspection Form
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E. Check all areas that have been inspected.
All in place BMPs x All disturbed soils x All concrete wash out area x All material storage areas x
All discharge locations x All equipment storage areas x All construction entrances/exits x
F. Elements checked “Action Required” (section D) describe corrective action to be taken. List the element number;
be specific on location and work needed. Document, initial, and date when the corrective action has been completed
and inspected.
Element
#
Description and Location Action Required Completion
Date
Initials
Dust control throughout the job Have a water truck spray the
roadways throughout the day to keep
down the dust.
G. Corrective action taking place.
Description of action Completion
Date
Initials
Sign the following certification:
“I certify that this report is true, accurate, and complete, to the best of my knowledge and belief”
Inspected by: (print) Alexis Lamrouex
(Signature) Alexis Lamrouex
Date: 6/29/23
Title/Qualification of Inspector:
CESCL