EcoSpold 1 · Calculation comparison

BAFU 2025 v1, Water pollutants

A comparison of published impact results with VoLCA calculations from the same source data and the publisher’s impact factors. Points on the diagonal agree.

Engine version: volca 0.14.0 (bd7e64a, v0.14.0, linux)
Measured on: 2026-09-20

Comparison measurements and reference
Database	BAFU 2025 v1
Source format	EcoSpold 1
Impact method collection	Ecological Scarcity 2021
Impact category	Water pollutants
Unit	UBP
Activities compared	11,557
Median ratio (VoLCA / published)	0.9410
Comparison band	1%
Activities outside the band	10,301
Share outside the band	89.13%
Verdict	Disagrees: misses the agreement a release is held to
Points drawn	2,087
Largest relative deviation	-99.87%
Activity with largest deviation	Arsine, at plant {GLO}
Published reference	BAFU-2025 ecospold1.zip!BAFU-2025_LCIA Results.xlsx

Each point is one activity: what BAFU 2025 v1 published for Water pollutants (UBP), against what VoLCA computes from the same EcoSpold 1 source under the publisher's own Ecological Scarcity 2021 factors. The black line is equality and the grey band is 1%. 11,557 activities were compared; 10,301 fall outside the band, more than a picture can hold, so 1,927 of the 11,557 are drawn, evenly spaced over the published value whichever side of the band they fall, and the 160 of the 200 farthest from equality that this walk missed are added. Where several fall on one spot, at most three markers are drawn there, since a fourth would not darken it. Median ratio 0.9410, 89.13% outside the band. This misses the agreement a release is held to: at most 5% of activities outside the band and a median ratio inside it.