Table 3 Environmental impact of drilling waste management scenarios (per 1000 tons of drill cuttings)

Agricultural land occupation - ALOP

m² a

2.53E+05

7.63E+03

9.71E+03

2.60E+03

428

Climate change - GWP100

kg CO₂-eq

2.44E+04

1.82E+05

4.02E+05

2.79E+05

6.05E+04

Fossil depletion – FDP

kg oil-eq

8.33E+03

6.32E+04

9.41E+04

5.25E+04

2.10E+04

Freshwater ecotoxicity – FAETPinf

kg 1,4-DCB-eq

473

2.34E+03

3.64E+03

1.85E+03

1.92E+03

Freshwater eutrophication – FEP

kg P-eq

3.1

23.6

47.6

29.7

29.0

Human toxicity – HTPinf

kg 1,4-DCB-eq

6.80E+03

4.25E+04

7.26E+04

4.56E+04

2.36E+04

Ionising radiation - IRP_HE

kg U²³⁵-eq

1.54E+03

1.35E+04

1.94E+04

1.02E+04

1.46E+04

Marine ecotoxicity – METPinf

kg 1,4-DCB-eq

451

2.32E+03

3.54E+03

1.84E+03

1.73E+03

Marine eutrophication – MEP

kg N-Eq

74

547

784

404

66

Metal depletion – MDP

kg Fe-eq

2.04E+03

1.14E+04

1.68E+04

8.32E+03

1.97E+03

Natural land transformation - NLTP

m²

7.9

299.5

319.9

81.8

8.2

Ozone depletion – ODPinf

kg CFC-11-eq

0.0036

0.0274

0.0364

0.0189

0.0077

Particulate matter formation - PMFP

kg PM₁₀-eq

81

579

849

440

163

Photochemical oxidant formation - POFP

kg NMVOC

223

1.66E+03

2.35E+03

1.20E+03

194

Terrestrial acidification - TAP100

kg SO₂-eq

148

1.15E+03

1.71E+03

898

241

Terrestrial ecotoxicity – TETPinf

kg 1,4-DCB-eq^a

6.5

42.9

54.3

33.4

5.9

Urban land occupation – ULOP

m²a

1.14E+03

4.79E+04

5.44E+04

1.61E+04

703

Water depletion – WDP

m³

29

2.14E+04

2.17E+04

3.87E+03

1.13E+04