HomeMy WebLinkAbout6-20-23 Central Maintenace FacilityConstruction Stormwater Site Inspection Form
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Project Name King County Parks
Central Maintenance
Facility
Permit # WAR310106 Inspection Date 6/20/23 Time 2:00
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): 0.53
Approximate rainfall amount in the last 24 hours (in inches): 0.15
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:
6/20/23
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
Eco pan West corner next to concrete
waste bin
Empty out
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: 6/20/23
Title/Qualification of Inspector:
CESCL