Remediation of Asbestos
Impacted Soils
Presentation by:
Robin Crowther - JPC Environmental Services
Craig Chaplin – Elvanite Recycling Ltd
Introduction
Site Investigation – Robin Crowther
Site Works – Craig Chaplin
Validation – Robin Crowther
Site Investigation
Know your site
Know your soil
Know your contaminant
Presentation by JPC Environmental Services Ltd & Elvanite Recycling Ltd Remediation of Asbestos Impacted Soils
Site Investigation – know your site
Presentation by JPC Environmental Services Ltd & Elvanite Recycling Ltd Remediation of Asbestos Impacted Soils
Small farm with
residual buildings
and paddock land –
approximately
8,600m2
Site Investigation – know your site
Presentation by JPC Environmental Services Ltd & Elvanite Recycling Ltd Remediation of Asbestos Impacted Soils
Trial Pit Locations
Site Investigation – know your Soil
Presentation by JPC Environmental Services Ltd & Elvanite Recycling Ltd Remediation of Asbestos Impacted Soils
Made Ground – dark brown, slightly gravelly, slightly
clayey SAND. Gravel is fine to coarse flint, brick and clay
roofing tile with occasional slate, charcoal and asbestos
fragments
The coarser made ground was generally encountered
along the line of the access road, farm yard and under
former building footprints. Elsewhere surface deposits of
asbestos cement board/drainage pipe were identified
over highly organic topsoil.
Site Investigation – know your contaminant
Presentation by JPC Environmental Services Ltd & Elvanite Recycling Ltd Remediation of Asbestos Impacted Soils
Asbestos Risk
Site Investigation – know your contaminant
Presentation by JPC Environmental Services Ltd & Elvanite Recycling Ltd Remediation of Asbestos Impacted Soils
Development Requirements
Presentation by JPC Environmental Services Ltd & Elvanite Recycling Ltd Remediation of Asbestos Impacted Soils
Development Requirements
Presentation by JPC Environmental Services Ltd & Elvanite Recycling Ltd Remediation of Asbestos Impacted Soils
Opportunity to retain suitable material on site
Fill areas such as
Building footprint
Carpark
Design Constraints
Engineering requirement for a ground bearing slab, ruled out the placement of material beneath building footprint– Type 1 fill required.
Drainage requirement for soakaway restricted the fill area of the carpark for fibre impacted fines.
Regulatory Involvement
Presentation by JPC Environmental Services Ltd & Elvanite Recycling Ltd Remediation of Asbestos Impacted Soils
Local Planning Authority – contaminated
land conditions
Environment Agency –
environmental permitting
Exemptions
CL:AIRE – DoW DI CoP
enforcement position statements
Disposal of surplus soil
Contaminants of concern
Waste classification –
Waste acceptance criteria testing
Tip discretion
WM3 requirements
Pre-treatment requirements
Presentation by JPC Environmental Services Ltd & Elvanite Recycling Ltd Remediation of Asbestos Impacted Soils
WM3 Technical
Guidance
Presentation by JPC Environmental Services Ltd & Elvanite Recycling Ltd Remediation of Asbestos Impacted Soils
Site Work – Craig
Chaplin
Site Works –
Delivering the strategy on site
Adopt common strategy to
satisfy both reuse and off site
disposal demands
Site walkover and hand pick all
visible surface deposits
Strip site in a defined sequence to
minimise cross contamination
Moving from low risk to high risk
Presentation by JPC Environmental Services Ltd & Elvanite Recycling Ltd Remediation of Asbestos Impacted Soils
Site Works –
Delivering the strategy on site
Presentation by JPC Environmental Services Ltd & Elvanite Recycling Ltd Remediation of Asbestos Impacted Soils
Localised caches / concentrated hotspots were identified, isolated to start, then treated at source as far as possible.
Excavated soils only screened once the bulk of the asbestos removed.
Site Works –
Delivering the strategy on site
Presentation by JPC Environmental Services Ltd & Elvanite Recycling Ltd Remediation of Asbestos Impacted Soils
Site Works –
Delivering the strategy on site
Presentation by JPC Environmental Services Ltd & Elvanite Recycling Ltd Remediation of Asbestos Impacted Soils
Site Works –
Delivering the strategy on site
Presentation by JPC Environmental Services Ltd & Elvanite Recycling Ltd Remediation of Asbestos Impacted Soils
The stock piles were placed within their
own risk areas to further reduce the
risk of cross contamination
The clean/low risk soils stripped from
the green/paddock area, were retained
on site as topsoil, subject to validation
sampling
The medium and high risk material was
screened under controlled conditions,
hand picked to remove asbestos
Site Works –
Delivering the strategy on site
Presentation by JPC Environmental Services Ltd & Elvanite Recycling Ltd Remediation of Asbestos Impacted Soils
Dust fighter (fogging unit) used to prevent fibre release
Site Works –
Delivering the strategy on site
Presentation by JPC Environmental Services Ltd & Elvanite Recycling Ltd Remediation of Asbestos Impacted Soils
Personnel and perimeter air monitoring was
undertaken to verify that control measures were
working correctly
Site Works –
Delivering the strategy on site
Green waste and assorted debris separated from topsoil
Site Works –
Delivering the strategy on site
Recycled aggregate
recovered from
made ground
Utilised on site to
form sub-base to
car park
Site Works –
Delivering the strategy on site
Screened fines
placed in 50m3
stockpiles pending
the results of
validation testing
Site Works –
Delivering the strategy on site
Screened fines
placed in 50m3
stockpiles pending
the results of
validation testing
Site Works –
Delivering the strategy on site
Presentation by JPC Environmental Services Ltd & Elvanite Recycling Ltd Remediation of Asbestos Impacted Soils
?
Frequent sampling of screened
soils was used to verify success
of strategy and demonstrate
compliance with waste disposal
requirements
Validation – Robin
Crowther
Validation / Verification
Presentation by JPC Environmental Services Ltd & Elvanite Recycling Ltd Remediation of Asbestos Impacted Soils
Elvanite provided a wide
range of documentation to
assist with the validation
reporting. This included:
Risk assessments
Method statements
A daily site diary
Haulage tickets
Waste disposal paperwork
Air monitoring reports
Validation / Site Visit 1
Presentation by JPC Environmental Services Ltd & Elvanite Recycling Ltd Remediation of Asbestos Impacted Soils
Validation / Site Visit 2
Presentation by JPC Environmental Services Ltd & Elvanite Recycling Ltd Remediation of Asbestos Impacted Soils
Validation / Site Visit 3
Presentation by JPC Environmental Services Ltd & Elvanite Recycling Ltd Remediation of Asbestos Impacted Soils
Construction starts on blank canvas
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