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This document specifies a method to identify and compare the compositional characteristics of oil samples. Specifically, it describes the detailed analytical and data processing methods for identifying the characteristics of spill samples and establishing their correlation to suspected source oils. Even when samples or data from suspected sources are not available for comparison, establishing the specific nature (e.g. refined petroleum, crude oil, waste oil, etc.) of the spilled oil still helps to constrain the possible source(s). This methodology is restricted to petroleum related products containing a significant proportion of hydrocarbon-components with a boiling point above 150 °C. Examples are: crude oils, higher boiling condensates, diesel oils, residual bunker or heavy fuel oils, lubricants, and mixtures of bilge and sludge samples, as well as distillate fuels and blends. While the specific analytical methods are perhaps not appropriate for lower boiling oils (e.g. kerosene, jet fuel, or gasoline), the general concepts described in this methodology, i.e. statistical comparison of weathering-resistant diagnostic ratios, are applicable in spills involving these kinds of oils. Paraffin based products (e.g. waxes, etc.) are outside the scope of this method because too many compounds are removed during the production process [37]. However, the method can be used to identify the type of product involved. Although not directly intended for identifying oil recovered from groundwater, vegetation, wildlife/tissues, soil, or sediment matrices, they are not precluded. However, caution is needed as extractable compounds can be present in these matrices that alter and/or contribute additional compounds compared to the source sample. If unrecognized, the contribution from the matrix can lead to false “non-matches”. It is therefore advisable to analyse background sample(s) of the matrix that appear unoiled. When analysing “non-oil” matrices additional sample preparation (e.g. clean-up) is often required prior to analysis and the extent to which the matrix affects the correlation achieved is to be considered. Whether the method is applicable for a specific matrix depends upon the oil concentration compared to the “matrix concentration”. In matrices containing high concentrations of oil, a positive match can still be concluded. In matrices containing lower concentrations of oil, a false “non-match” or an “inconclusive match” can result from matrix effects. Evaluation of possible matrix effects is beyond the scope of this document.

This document specifies how calculations of different parts can be combined into a carbon balance calculation for the entire value chain related to wood and wood-based products. NOTE This document will gradually mature over time as methodology evolves. This document sets general requirements and overarching terminology. This document includes information on how to bring calculation results forward in the value chain. It also includes information on how claims and declarations can be worded based on this standard, both within the value chain and to customers and consumers.

This document provides a methodology for calculating the carbon balance of a forest management unit. This quantification methodology will demonstrate if the forest management unit is a net carbon sink or net carbon source. It provides information that can be used both on organizational and product levels. This calculation methodology includes system boundaries, geographical scale, time periods, allocation method, emission and removal factors etc. Emissions related to forest operations (e.g. fuels for machinery, the production and use of fertilizers) are not included in this document. NOTE Emissions related to forest operations are covered in part 1 of this standard series.

This document provides a methodology for calculating the displacement effects for wood and wood-based products including through substitution. This document also deals with double counting and products that do not substitute other products or lead to displacement.