| Finished ground level (+ or – 0.5m) | – | – | 9m AOD | – |
| Gas holder/gas bag (Work No. 8) | 1 | 17m diameter | 29m AOD (20m above FGL) including lightning protection | 2,000m3 |
| Flare stack (Work No. 8) | 1 | | 24m AOD (15m above FGL) | 2,000m3/hr |
| Footprint of biogas storage and operational area (Work No. 8) | | 170m x 50m | | |
| Foundation depth | | Piles to a depth of -16m AOD (25m below FGL) | | |
| EITHER | | | | |
| Biogas upgrading plant (Work No. 9) | 1 | 50m x 50m | 21m AOD (12m above FGL) | 1,000m3/hr |
| OR | | | | |
| Combined heat and power (CHP) plant (Work No. 9) | 2 CHP engines | 50m x 50m | 33m AOD (24m above FGL) stack combined with boiler flue (see Part 16 below) | 1.5 MW thermal input per CHP engine (total maximum 3MWth) |