Advanced swine manure treatment in Maitenlahue and La Manga

Audit Analysis

A CDM methane-avoidance project from swine manure treatment in Chile with VVB-confirmed additionality and quantified leakage, but undermined by a 7.4× discrepancy between the ex-ante and monitoring-period ERR figures, a grid emission factor contradiction between documents, and eight corrective action requests that signal material documentation quality issues. The project's claim safety is significantly weakened by the unexplained over-delivery relative to the pro-rata expectation.

Project Description

Red Flags

• ⚠Monitoring report ERR of 402,429 tCO2e is approximately 7.4× the pro-rata expectation derived from the validation report's ex-ante estimate of 198,025 tCO2e over the full 7-year crediting period
• ⚠Grid emission factor differs between the validation report (0.56736, based on 2008 data) and the monitoring report (0.797, 2013 data), with the validation report's use of 2008 data flagged as a CAR
• ⚠Eight corrective action requests were raised during verification, covering retention time errors, crediting period date errors, parameter misclassification, and monitoring plan gaps
• ⚠Verified ERR figure is not stated in the available extracted record, preventing independent confirmation of the claimed reductions

Credit Vintages