Concrete supplied to Ochrefield Tower (synthetic)
Two parties agree (V1)Can be filedProxyOpen finding
Geography: AE-DUProxy · Only 4 supplier EPDs held; band widened No factor exists for this region, so a wider region’s factor stands in. The band is widened and the tier capped.Geography fallback · depth 1
P5 · 79.4P95 · 155.7
111.2 tCO2ebetween 79.4 and 155.7 about 90% of the time (P5 to P95) The median is the middle estimate. The band runs from P5 to P95: the true value falls inside it about 90% of the time.Two parties agree (V1)A tier says how the evidence behind a figure was obtained. It is evidence quality, not assurance.
Why this tier
Two parties agree (V1): regional proxy limits evidence quality.
Capped because a regional proxy factor is used. Only 4 supplier EPDs held; band widened
How to move this up
Add a second, independent record of the same quantity.
Who to check it with
O. Haddad (synthetic), site engineer at Ochrefield Tower.
What could we add
A supplier statement or a meter reading for the same weeks.
Chain of evidence
The tier describes only the quantity.
Quantity
- 356.4 m3 from the records listed below
Factor
- FACTOR-01: 312.009 kgCO2e per m3, geography AE-DU, PROXY with its band widened
Where it comes from
- Ochrefield Tower team (synthetic) · primary recordDocument and a second party · 2026-Q2 · Kept as received356.4 m3, GSD 1.10 · Two parties agree (V1)
- Instrument slot: empty
- Practitioner slot: empty. No assurance engagement is recorded for this period.
What was added
- Delivery notes, 58Dunebay Readymix (synthetic)Rail R1, Documents
- Mixer truck arrivals, CAM-GATE-02YoursRail R4, Site vision
What should we add next?
Pick something you could add and whose it would be. The answer is the engine’s.
Nothing is picked yet.
What is missing to clear V3
- Not held: an instrument reading, A weighbridge reading at the gate
- Held: a second party who independently agrees, Dunebay Readymix (synthetic) delivery notes
The cheapest second party: Dunebay Readymix (synthetic), who already produce a docket. With both, this figure could clear V3.
Computing
For auditors
- kgCO2e
- 111,200 (P5 79,400, P95 155,700)
- GSDs
- Document and a second party 1.1 · factor 0.3
- Factor
- FACTOR-01, geography AE-DU
- Verdict
- concordant
- z
- Not computed, because there is one record
- Criteria
- CS-GROUP-2026.v1, PROPOSED, not ratified