Guidance on the Assessment of Mineral Dust Impacts for Planning 2016

1. AGENDA
• Introduction - Claire Holman, Brook Cottage Consultants
• Source-pathway-receptor approach Jon Pullen, RPS
• Site conditions Hugh Datson, Dustscan
• PM10 and dust reduction with distance Ian Stone, Advance
Environmental
• Determining ‘Residual Source Emissions’ Srinivas Srimath,
RSK
• Planning inquiry decisions Mark Dawson, Wardell
Armstrong
• Closing remarks
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2. IAQM Mineral Planning Guidance
Dr Claire Holman
Chair: IAQM Minerals Working Group
IAQM Meeting
24 May 2016
London
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3. New IAQM guidance
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4. Scope
• Sites extracting solid minerals
• May include secondary aggregate processing
• Specifically for planning not environmental permit
applications
• Primarily for England
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Photo: Rachel McHale. SLR
Consulting Ltd

5. Approach
• Aims to:
– promote good quality assessments provide framework
– fill gap left by withdrawal of MP2
– supplement advice given in national Planning Practice Guidance
• To use the Source-pathway-receptor relationship
• Otherwise non prescriptive
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6. Assessing impacts
Mineral impacts
• Difficult to quantify
• Little robust data of
impacts
• Requires knowledge of
site operations &
effectiveness of mitigation
measures
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Photo: Ian Stone, Advance Environmental

7. nPPG - Key stages to a dust
assessment
1. Establish baseline conditions of the existing dust
climate around the site of the proposed operations;
2. identify site activities that could lead to dust emissions
without mitigation;
3. identify site parameters which may increase potential
impacts from dust;
4. recommend mitigation measures, including modification
of site design;
5. make proposals to monitor and report dust emissions to
ensure compliance with appropriate environmental
standards and to enable an effective response to
complaints.
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8. IAQM approach
• Assessments to use
Source – pathway – receptor model
• Screening: Where there are no receptors near to a mineral site there
will be no significant effect.
– Distance based screening criteria for dust disamenity
– Distance + background for PM10
• Assessment approach not prescriptive
• Example provided evolved from Alex Grant’s approach
• Modelling not generally required
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9. Screening – dust disamenity
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10. Screening - PM10
National Planning Practice
Guidance IAQM
• Where receptors within 1
km and background PM10
concentration is less than
17 µg/m3
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Figure 1: Site Assessment Flow Chart[1]
Paragraph: 032 Reference ID:
27-032-20140306

11. Minerals dust assessment -
Content
• Existing PM10 concentration and dust deposition rates (where
available)
• Location of receptors and sensitivities to PM10 / dust
• Dust sources associated with the proposed development
• Control/mitigation measures
• A prediction of the likely PM10 and dust impacts and resulting effects
(on health, amenity, and/or ecology) at relevant sensitive receptors:
– likely magnitude of dust emissions (after mitigation)
– meteorological characteristics at the site;
– dispersion and dilution to the receptors, taking into account
distance, orientation, local terrain and features, and other
relevant factors;
– the sensitivity of the receptors to disamenity, health and/or
ecology effects; and
– any likely cumulative interactions
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12. Dust disamenity assessment steps
Step 1: Describe site characteristics and baseline
conditions
Step 2: Estimate dust impact risk (with mitigation)
Step 3: Estimate likely magnitude of effect
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Photo: Ian Stone, Advance Environmental

13. Assessment conclusion
• Assessment provides overall disamenity and, where required, the
ecological and health effects, at individual receptors
• Conclusion must be drawn of overall effect Judgement must be
used to determine effect is either “significant” or “not significant”
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Photo: Hugh Datson, DustScan Ltd

14. Consultation: substantive
comments
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Issue Response
Short term PM10 not included Lack of data available
PM2.5 not included
Mineral site generally produce coarse
PM > PM2.5
The graphs will be used as a proxy for
an assessment
Clearly stated this is not to be done
Ecological receptors not the same as in
the IAQM construction guidance
background PM10 screening criteria
Now consistent
Unclear how to estimate PM10 process
contribution
Now referred to Appendix 5

15. Review
• Guidance will be reviewed in 12-18 months in
light of the experience of using it
• IAQM members will be asked to comment
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16. Working group members
• Hugh Datson, DustScan
• Mark Dawson, Wardell Armstrong
• Claire Holman, Brook Cottage Consultants (Chair)
• Rachel McHale, SLR
• Jon Pullen, RPS
• Srinivas Srimath, RSK
• Matt Stoaling, Isopleth
• Ian Stone, Advance Environmental
• Penny Wilson, Air Quality Consultants
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17. AGENDA
• Introduction - Claire Holman, Brook Cottage Consultants
• Source-pathway-receptor approach Jon Pullen, RPS
• Site conditions Hugh Datson, Dustscan
• PM10 and dust reduction with distance Ian Stone, Advance
Environmental
• Determining ‘Residual Source Emissions’ Srinivas Srimath,
RSK
• Planning inquiry decisions Mark Dawson, Wardell
Armstrong
• Closing remarks
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