Paragraph 33 Emission data: water, leachate and gas controlF1
Samples of leachate or surface water (if present) must be collected at representative points.
Sampling and measuring of the volume and composition of any leachate must be performed separately at each point at which leachate is discharged from the site.
Monitoring of surface water (if present) must take place at least two points, one upstream from the landfill and one downstream.
Gas monitoring must be carried out for each section of the landfill and representative samples must be collected and analysed in accordance with Table 11.
A sample of leachate and water representative of the average composition must be taken for monitoring purposes in accordance with Table 11.
Table 11
| Operational phase | After-care phasef1 | |
|---|---|---|
(1) The frequency of sampling may be adapted on the basis of the morphology of the landfill waste (in tumulus, buried, etc) (but only if SEPA considers that the conditions of the landfill permit should allow for it). | ||
(2) These do not apply where leachate collection is not required under paragraph 39(2). | ||
(3) Longer intervals may be allowed if the evaluation of data indicates that they would be equally effective. For leachates, the conductivity must always be measured at least once a year. | ||
(4) The parameters to be measured and substances to be analysed vary according to the composition of the waste deposited. They must be specified in the conditions of the landfill permit and reflect the leaching characteristics of the wastes. | ||
(5) On the basis of the characteristics of the landfill site, SEPA may determine that these measurements are not required. | ||
(6) These measurements are related mainly to the content of the organic material in the waste. | ||
(7) CH4, CO2, O2 regularly, other gases as required, according to the composition of the waste deposited, with a view to reflecting its leaching properties. | ||
(8) Efficiency of the gas extraction system must be checked regularly. | ||
| Leachate volumef2 | Monthlyf3 | Every six months |
| Leachate compositionf4 | Quarterly | Every six months |
| Volume and composition of surface waterf5 | Quarterly | Every six months |
| Potential gas emissions and atmospheric pressure f6 (CH4, CO 2, O2, H2S, H2 etc) | Monthlyf7 | Every six monthsf8 |
Annotations
Textual amendments
- F1
Sch. 13 inserted (1.11.2025) by The Environmental Authorisations (Scotland) Amendment Regulations 2025 (S.S.I. 2025/165), reg. 1(2), sch. 4 (with sch. 23)
Footnotes
- f1
(1)
The frequency of sampling may be adapted on the basis of the morphology of the landfill waste (in tumulus, buried, etc) (but only if SEPA considers that the conditions of the landfill permit should allow for it).
- f2
(2)
These do not apply where leachate collection is not required under paragraph 39(2).
- f3
(3)
Longer intervals may be allowed if the evaluation of data indicates that they would be equally effective. For leachates, the conductivity must always be measured at least once a year.
- f4
(4)
The parameters to be measured and substances to be analysed vary according to the composition of the waste deposited. They must be specified in the conditions of the landfill permit and reflect the leaching characteristics of the wastes.
- f5
(5)
On the basis of the characteristics of the landfill site, SEPA may determine that these measurements are not required.
- f6
(6)
These measurements are related mainly to the content of the organic material in the waste.
- f7
(7)
CH4, CO2, O2 regularly, other gases as required, according to the composition of the waste deposited, with a view to reflecting its leaching properties.
- f8
(8)
Efficiency of the gas extraction system must be checked regularly.