Untreated saw-machined solid wood packaging wedges and contoured blocks

1. Scope and Applicability

Applies only to finished loose, untreated solid-wood packaging wedges and contoured/notched blocks, saw-machined from purchased kiln-dried coniferous or temperate hardwood sawnwood by electric equipment. A cargo-contact taper, contour or notch and documented packaging fit acceptance are mandatory. Plain rectangular timber and continuous profiles sold for further manufacture remain upstream categories, even when a buyer later uses them as dunnage. H.A. Stiles documents custom shaped dry pine/poplar packaging components; CTU Code Annex 7 §2.3.5 makes wedge grain direction relevant to cargo restraint. These sources establish physical product/function distinctions, not a universal strength, yield or lifespan.

Excluded: wood boxes/crates/cable drums, pallets/load boards or their assembly stock, barrels/coopers products, wood wool/flour (31220), waste products (392), unshaped sawnwood (31101), general continuously shaped timber (31211), furniture/construction wedges, particleboard/composite or glued blocks, coatings, impregnation and phytosanitary-treated dispatch products. This cold route excludes onsite drying, thermal treatment, combustion, sanding/planing, wet processing, fuel-powered handling and product assembly. Material operations beyond this scope require an evidence-backed extension with individually resolved exchanges before data release. Untreated solid-wood dunnage is not exempt from phytosanitary obligations merely because cut; this dataset makes no export-compliance claim.

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.other-transportable-goods-except-metal-products-machinery-and-equipment.products-of-wood-cork-straw-and-plaiting-materials.other-wooden-wrapping-and-packaging-material
classification_refs	CPC 3.0 31709; narrower; scope and accepted decisions: classifications/mappings/cpc-3.0-to-pcr.yaml and its referenced ADRs
covered_products	Accepted solid-wood packaging wedges and contoured/notched blocks with cargo-contact geometry
excluded_products	The exclusions in section 1; classification labels alone do not establish applicability
representative_product	Unglued uncoated tapered pine packaging wedge, cut to order from kiln-dried sawn stock
production_route	Purchased dry stock; electric sawing of taper/contour/notch; dry dust collection; dimensional/grain/fit acceptance; bulk or PE-wrapped dispatch
market_state	Finished standalone packaging article at manufacturing gate, ready for customer cargo placement; no downstream installation included

3. Reference Flow

Field	Value
What	Supply specified loose packaging wedge or contoured block for declared cargo support/restraint application
How much	1 kg accepted net as-delivered wood at factory gate, excluding wrapping
How well	Meet actual order geometry, taper/contour/notch, grain direction, species, moisture, defect and fit acceptance; no generic load rating
How long or cycle	One declared production and dispatch cohort; no service life or shipment-count equivalence
reference_flow_link	finished_out

Field	Value
Reference amount	1
Reference product flow	Other wooden wrapping and packaging material 1437dd55-5b8c-4866-83a4-b6911ed60bf8
Reference flow property	Mass 93a60a56-a3c8-11da-a746-0800200b9a66
Reference unit group	Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
Reference unit	kg
Required qualifiers	One actual SKU and accepted geometry; cargo packaging function; botanical species/mix; solid/unglued/uncoated/unimpregnated state; source kiln-dried stock; actual finished dimensions/taper/contour/notch and grain direction; acceptance specification and defect/fit evidence; net delivered mass; dry-basis moisture and method; actual site/period; starting gate; wrapping separate; no phytosanitary treatment/export claim; matched upstream supplier basis

Declare all required qualifiers in dataset metadata or equivalent reference-flow notes. The broad verified reference identity must be constrained by these physical qualifiers; a kg cannot establish equivalent cargo restraint across geometries. No factory observations are supplied by this PCR.

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
reference_mass	reference product	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Use calibrated net weighing of accepted wood at dispatch under cp_reference. All inventory is per 1 kg reference flow, including physical residues. No piece-to-kg estimate from nominal geometry.
moisture_basis	wood and wood residues	Mass and dry-basis moisture	kg; dimensionless	For fractions u=(m_wet-m_dry)/m_dry; m_dry=m_wet/(1+u); water=m_wet-m_dry. Measure paired specimens to oven-dry constant mass, with sampling/calibration evidence, m_dry>0 and u≥0. Divide percentage by100. No fixed species moisture/density. [usda-wood-handbook-2021, Ch4 eq4-2; algebra.]
energy_basis	electricity_in	Net calorific value 93a60a56-a3c8-11da-a746-0800200c9a66	MJ	Meter customer-side delivered electricity by stage; 1 kWh=3.6 MJ from verified unit group. Database energy-property label does not imply combustion. Do not model onsite generation emissions for purchased electricity.
count_volume_basis	count/volume records	Mass	kg	Reconcile counts to directly weighed accepted lot mass at the same moisture; use measured density with actual net contoured solid volume only if conversion is necessary. Bounding rectangular volume and stacked volume are not net solid volume.

5. System Boundary

Boundary Abstraction

Field	Value
declared_starting_condition	Purchased kiln-dried untreated sawn stock received at workshop; supplier drying burdens remain upstream
starting_condition_role	Gate-to-gate electric conversion to accepted packaging articles
product_classification_scope	Only specified solid-wood packaging wedge/contoured-block subset; CPC31709 narrower scope
recursive_input_rule	Purchased same-category unfinished/reworked packaging articles change the route and require separate disclosed supplier gate; never silently substitute for sawn stock or create repeated finishing credit
upstream_dataset_requirement	Match stock species, drying, moisture/reference quantity, forestry carbon/allocation, supplier gate and inbound transport; match delivered electricity voltage/geography/period, oil and PE supplier specifications. Identity UUID is not a background dataset.
disclosure	Disclose all gates, actual operations, meters, transport providers, exclusions and pending identities/background compatibility; gate-to-gate alone is not cradle-to-gate

rule_id	Applies to	Rule	source_ids
boundary_operations	workshop	Include receiving, layout, taper/contour/notch sawing, reject handling, dust collection, electric internal movement, maintenance attribution, fit/geometry acceptance and dispatch; meter stages within one foreground unit. Installation, cargo transport/use, fasteners applied by customers and end-of-life are downstream. Declare capital/tool replacement and employee-activity treatment and assess significance; no automatic zero claim.	hastiles-packaging-wedges; ctu-code-2014
boundary_dust	mechanical releases	Measure actual air emissions after controls; captured sawdust is an external material output. EPA PTE tables are screening evidence, not actual emissions. Add each other observed atomic substance before dataset completion; no blanket mass cutoff.	epa-sawmill-pte-2014
boundary_carbon	wood carbon	Track measured dry-wood carbon crossing all material gates and retained stock. No new atmospheric uptake or avoided-disposal credit is created at the workshop. Retain inherited upstream uptake once. This cold non-combustion route has no prescribed positive biogenic CO2 emission; any measured oxidation/decay invalidates assumed absence and requires separate biogenic CO2 and other species rows. Never erase biogenic CO2 from LCI because of a greenhouse-gas reporting convention.	usda-wood-handbook-2021
boundary_treatment	route qualification	Do not represent heated, glued, coated, fumigated or export-certified products with this untreated route. Machining alone is not a processed-wood pest exemption. Require separate treatment evidence and inventory for an extended route.	ippc-ispm15-2018

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
manufacture	Cold sawing, collection, acceptance and dispatch	required	Purchased dry stock, all-electric dry route	Single foreground unit with stage meters and material balance	finished_out

The physical graph retains unallocated inputs, accepted wood, shipped wrapping, all coproducts/wastes, emissions and stock changes. Divide same-cohort physical totals once by accepted net wood kg; this is normalization, not allocation. Keep a separate product-specific environmental-burden ledger after allocation; never multiply coproduct physical outputs or internal transfer amounts by allocation shares. Sawing and dispatch are aggregated to one process so the same finished UUID has exactly one reference output; keep substage metering. Internal returns remain internal and are not new purchased inputs. No amount ranges or factory values are asserted. Unknown exchanges are pending, not zero; conditional absence requires records.

Process: Cold saw machining and dispatch (manufacture)

Inputs

Product flows

Kiln-dried sawn coniferous timber, at mill (coniferous_in)

Only the actual kiln-dried untreated coniferous stock; do not use for hardwood. Collect species, dimensions, moisture and supplier drying boundary. The selected stock identity applies to actual incoming sawn boards thicker than 6 mm; record measured thickness. Boards at or below 6 mm require a separately verified compatible identity before use.

• Selected flow: Kiln-dried sawn coniferous timber, at mill 50904047-e5b0-4110-990a-53751d250267

• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg

• Amount rule: Use unallocated measured same-cohort exchange total divided once by accepted net wood kg; preserve raw total, stock change and origin/destination.

• Value mode: Calculated value (calculated_value)

• Specificity: Site-specific (site_specific)

• Normalization basis: per 1 kg reference flow

• Basis kind: Reference flow (reference_flow)

• Evidence kind: Calculated from collection (calculated_from_collection)

• Collection protocol: cp_material

• Sources: usda-wood-handbook-2021

Sawnwood, hardwood (hardwood_in)

Only actual kiln-dried untreated temperate hardwood stock. Generic feedstock identity is not a seat-frame manufacturing inventory; verify actual species and supplier gate. The selected stock identity applies to actual incoming sawn boards thicker than 6 mm; record measured thickness. Boards at or below 6 mm require a separately verified compatible identity before use.

• Selected flow: Sawnwood, hardwood 43103a96-43df-4f35-ad02-728237b3f815

• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg

• Amount rule: Use unallocated measured same-cohort exchange total divided once by accepted net wood kg; preserve raw total, stock change and origin/destination.

• Value mode: Calculated value (calculated_value)

• Specificity: Site-specific (site_specific)

• Normalization basis: per 1 kg reference flow

• Basis kind: Reference flow (reference_flow)

• Evidence kind: Calculated from collection (calculated_from_collection)

• Collection protocol: cp_material

• Sources: usda-wood-handbook-2021

Alternating current (electricity_in)

Purchased customer-side grid electricity below 1 kV, for sawing, dust collection, electric handling and dispatch. Supplier geography/period/voltage must match. Other voltages require another verified identity. The raw record states geography CN. This physical AC identity does not establish a globally applicable background: verify the actual supplier, region, year, delivery gate, loss convention and MJ reference-quantity basis before linking a supplier dataset; unresolved compatibility remains disclosed.

• Selected flow: Alternating current 50657322-939c-4829-a87b-47c093bfa6a7

• Flow property / unit: Net calorific value 93a60a56-a3c8-11da-a746-0800200c9a66 / MJ

• Amount rule: Use unallocated measured same-cohort exchange total divided once by accepted net wood kg; preserve raw total, stock change and origin/destination.

• Value mode: Calculated value (calculated_value)

• Specificity: Site-specific (site_specific)

• Normalization basis: per 1 kg reference flow

• Basis kind: Reference flow (reference_flow)

• Evidence kind: Calculated from collection (calculated_from_collection)

• Collection protocol: cp_energy

• Sources:

Lubricating oil (oil_in)

Petroleum-fraction liquid machinery lubricating oil when consumed. Verify formulation/SDS and maintenance attribution. Do not transfer the record heating value into inventory or treat oil as burned fuel.

• Selected flow: Lubricating oil 66628f20-9d33-4997-bd6c-6357453fa268

• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg

• Amount rule: Use unallocated measured same-cohort exchange total divided once by accepted net wood kg; preserve raw total, stock change and origin/destination.

• Value mode: Calculated value (calculated_value)

• Specificity: Site-specific (site_specific)

• Normalization basis: per 1 kg reference flow

• Basis kind: Reference flow (reference_flow)

• Evidence kind: Calculated from collection (calculated_from_collection)

• Collection protocol: cp_auxiliary

• Sources:

Polyethylene film (film_in)

Only actual PE film used for dispatch wrapping. Verify polymer/SDS, additives, supplier and delivered grade. Source classification defect remains disclosed. No assumed wrapping quantity.

• Selected flow: Polyethylene film e64eb06c-6dc9-45f1-b003-3dc6c44b27e2

• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg

• Amount rule: Use unallocated measured same-cohort exchange total divided once by accepted net wood kg; preserve raw total, stock change and origin/destination.

• Value mode: Calculated value (calculated_value)

• Specificity: Site-specific (site_specific)

• Normalization basis: per 1 kg reference flow

• Basis kind: Reference flow (reference_flow)

• Evidence kind: Calculated from collection (calculated_from_collection)

• Collection protocol: cp_auxiliary

• Sources:

Outputs

Product flows

Finished untreated saw-machined solid-wood cargo-securing block (finished_out)

The referenced identity has the official baseName “Other wooden wrapping and packaging material”; this card represents one actual finished cargo-securing block SKU with one accepted geometry within that identity, constrained to the wedge or contoured/notched-block scope. Only accepted finished packaging wedges or contoured/notched blocks, excluding attached dispatch film. Record geometry, grain orientation, lot, fit acceptance and actual moisture.

• Selected flow: Finished untreated saw-machined solid-wood cargo-securing block 1437dd55-5b8c-4866-83a4-b6911ed60bf8

• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg

• Amount rule: 1 kg

• Value mode: Calculated value (calculated_value)

• Specificity: Site-specific (site_specific)

• Normalization basis: per 1 kg reference flow

• Basis kind: Reference flow (reference_flow)

• Evidence kind: Calculated from collection (calculated_from_collection)

• Collection protocol: cp_reference

• Sources: hastiles-packaging-wedges; ctu-code-2014

Polyethylene film (film_shipped)

Dispatch PE wrapping crossing the gate with goods, counted separately from net wood reference mass; physical transfer only, not another reference product or a coproduct credit.

• Selected flow: Polyethylene film e64eb06c-6dc9-45f1-b003-3dc6c44b27e2

• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg

• Amount rule: Use unallocated measured same-cohort exchange total divided once by accepted net wood kg; preserve raw total, stock change and origin/destination.

• Value mode: Calculated value (calculated_value)

• Specificity: Site-specific (site_specific)

• Normalization basis: per 1 kg reference flow

• Basis kind: Reference flow (reference_flow)

• Evidence kind: Calculated from collection (calculated_from_collection)

• Collection protocol: cp_auxiliary

• Sources:

Clean untreated non-agglomerated solid-wood cutting offcuts sold as coproduct (offcuts_sold)

Conditional actual separately sold clean untreated, non-agglomerated solid cutting pieces with lawful product/coproduct status, buyer-accepted dimensions/specification and continuing intended use. Record species, solid form, measured dimensions, moisture, treatment/adhesive/coating state, origin, wet mass and receiver. Payment alone does not establish product identity. Wood material is a broad physical locator for this single concrete stream; provider/downstream route, geography, period and reference-quantity compatibility remain to be verified. Keep separate from sawdust and discarded offcuts, without avoided credit.

• Selected flow: Wood material d07bf4c9-7cd0-46ad-a6b3-2fd11fe08f98

• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg

• Amount rule: Use unallocated measured same-cohort exchange total divided once by accepted net wood kg; preserve raw total, stock change and origin/destination.

• Value mode: Calculated value (calculated_value)

• Specificity: Site-specific (site_specific)

• Normalization basis: per 1 kg reference flow

• Basis kind: Reference flow (reference_flow)

• Evidence kind: Calculated from collection (calculated_from_collection)

• Collection protocol: cp_residue

• Sources: usda-wood-handbook-2021

Clean untreated uncompressed sawdust sold as coproduct (sawdust_sold)

Conditional actual separately sold clean untreated, uncompressed sawing particles with lawful product/coproduct status, buyer-accepted particle specification and continuing intended use. Record species, actual particle size/form, moisture, treatment/adhesive/coating state, collection origin, wet mass and receiver. Payment alone does not establish product identity. Wood material is a broad physical locator for this single concrete sawdust stream; provider/downstream route, geography, period and reference-quantity compatibility remain to be verified. Do not substitute chips, pellets, mixed hog fuel or a waste identity; keep separate from solid offcuts and captured waste, without avoided credit.

• Selected flow: Wood material d07bf4c9-7cd0-46ad-a6b3-2fd11fe08f98

• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg

• Amount rule: Use unallocated measured same-cohort exchange total divided once by accepted net wood kg; preserve raw total, stock change and origin/destination.

• Value mode: Calculated value (calculated_value)

• Specificity: Site-specific (site_specific)

• Normalization basis: per 1 kg reference flow

• Basis kind: Reference flow (reference_flow)

• Evidence kind: Calculated from collection (calculated_from_collection)

• Collection protocol: cp_residue

• Sources: usda-wood-handbook-2021

Waste flows

Offcut (offcuts_waste)

Actual discarded untreated, unglued, uncoated, non-agglomerated solid wood cutting offcuts/rejects only; record adhesive contamination absence and named receiver. Conditional physical identity despite disclosed CPC39282 conflict. No compressed briquettes.

• Selected flow: Offcut acc22294-8e77-4784-988f-2499be3c60eb

• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg

• Amount rule: Use unallocated measured same-cohort exchange total divided once by accepted net wood kg; preserve raw total, stock change and origin/destination.

• Value mode: Calculated value (calculated_value)

• Specificity: Site-specific (site_specific)

• Normalization basis: per 1 kg reference flow

• Basis kind: Reference flow (reference_flow)

• Evidence kind: Calculated from collection (calculated_from_collection)

• Collection protocol: cp_residue

• Sources: usda-wood-handbook-2021

sawdust waste (sawdust_waste)

Captured untreated sawing dust leaving for declared waste treatment/receiver. Exclude airborne dust and sold coproduct. Receiver combustion is outside this foreground and linked once downstream if modelled. The raw identity specifies combustion/recycling compatibility: verify actual fine powder/tiny-chip form, untreated clean state and receiver route; an incompatible actual route requires another verified flow.

• Selected flow: sawdust waste e1a44d20-d968-4d64-bd7c-253a1441ab35

• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg

• Amount rule: Use unallocated measured same-cohort exchange total divided once by accepted net wood kg; preserve raw total, stock change and origin/destination.

• Value mode: Calculated value (calculated_value)

• Specificity: Site-specific (site_specific)

• Normalization basis: per 1 kg reference flow

• Basis kind: Reference flow (reference_flow)

• Evidence kind: Calculated from collection (calculated_from_collection)

• Collection protocol: cp_residue

• Sources: usda-wood-handbook-2021

Spent petroleum machinery lubricating oil (used_oil_out)

Conditional actual used liquid petroleum-based machinery oil at its point of generation, with treatment unspecified by the selected broad waste identity. Record actual base oil/additives, contaminants, source equipment and maintenance interval, weighed dispatched mass, stock changes, retained oil and named receiver. Verify receiver treatment and provider reference-quantity compatibility separately; do not treat this identity as cleaned or regenerated oil, assume input equals waste, or substitute alkaline liquor.

• Selected flow: Used lubricating oil 55d93375-7f04-4166-b2a2-88ce929051a5

• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg

• Amount rule: Use unallocated measured same-cohort exchange total divided once by accepted net wood kg; preserve raw total, stock change and origin/destination.

• Value mode: Calculated value (calculated_value)

• Specificity: Site-specific (site_specific)

• Normalization basis: per 1 kg reference flow

• Basis kind: Reference flow (reference_flow)

• Evidence kind: Calculated from collection (calculated_from_collection)

• Collection protocol: cp_auxiliary

• Sources:

Unprocessed polyethylene wrapping-film trimmings (film_waste)

Conditional factory PE film trimmings, before cleaning or recycling; record polymer, contamination and receiver. Shipped wrapping remains in film_shipped.

• Selected flow: Unprocessed polyethylene wrapping-film trimmings

• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg

• Amount rule: Use unallocated measured same-cohort exchange total divided once by accepted net wood kg; preserve raw total, stock change and origin/destination.

• Value mode: Calculated value (calculated_value)

• Specificity: Site-specific (site_specific)

• Normalization basis: per 1 kg reference flow

• Basis kind: Reference flow (reference_flow)

• Evidence kind: Calculated from collection (calculated_from_collection)

• Collection protocol: cp_auxiliary

• Sources:

Elementary flows

particles (PM2.5) (pm_fine)

Actual emitted PM2.5 after controls, outdoor-air unspecified, including separately measured outlet and fugitive releases. Not total generated or captured dust.

• Selected flow: particles (PM2.5) 08a91e70-3ddc-11dd-9293-0050c2490048

• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg

• Amount rule: Use same-cohort actual emitted mass after controls divided once by accepted net wood kg. No nested PM sums or assumed zero.

• Value mode: Calculated value (calculated_value)

• Specificity: Site-specific (site_specific)

• Normalization basis: per 1 kg reference flow

• Basis kind: Reference flow (reference_flow)

• Evidence kind: Calculated from collection (calculated_from_collection)

• Collection protocol: cp_dust

• Sources: epa-sawmill-pte-2014

particles (PM2.5 - PM10) (pm_coarse)

Only the non-overlapping PM2.5-to-PM10 size interval actually emitted to unspecified outdoor air; derive difference only from compatible simultaneous nested measurements.

• Selected flow: particles (PM2.5 - PM10) 08a91e70-3ddc-11dd-9501-0050c2490048

• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg

• Amount rule: Use same-cohort actual emitted mass after controls divided once by accepted net wood kg. No nested PM sums or assumed zero.

• Value mode: Calculated value (calculated_value)

• Specificity: Site-specific (site_specific)

• Normalization basis: per 1 kg reference flow

• Basis kind: Reference flow (reference_flow)

• Evidence kind: Calculated from collection (calculated_from_collection)

• Collection protocol: cp_dust

• Sources: epa-sawmill-pte-2014

particles (> PM10) (pm_large)

Only actual emitted particles larger than PM10 in unspecified outdoor air; require measured compatible size basis. Unspecified PM cannot be reassigned to this bin.

• Selected flow: particles (> PM10) fe0acd60-3ddc-11dd-a70a-0050c2490048

• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg

• Amount rule: Use same-cohort actual emitted mass after controls divided once by accepted net wood kg. No nested PM sums or assumed zero.

• Value mode: Calculated value (calculated_value)

• Specificity: Site-specific (site_specific)

• Normalization basis: per 1 kg reference flow

• Basis kind: Reference flow (reference_flow)

• Evidence kind: Calculated from collection (calculated_from_collection)

• Collection protocol: cp_dust

• Sources: epa-sawmill-pte-2014

water vapour (water_vapour_out)

Conditional positive water evaporation from wood during cold handling/storage to unspecified outdoor air, supported by water balance. No onsite kiln. Material ambient sorption requires a separate verified resource input before completion, never a negative emission.

• Selected flow: water vapour fe0acd60-3ddc-11dd-ac04-0050c2490048

• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg

• Amount rule: Use same-cohort actual positive evaporation mass evidenced by the water balance divided once by accepted net wood kg. Absorption requires a separate verified input; do not assume zero or use a negative emission.

• Value mode: Calculated value (calculated_value)

• Specificity: Site-specific (site_specific)

• Normalization basis: per 1 kg reference flow

• Basis kind: Reference flow (reference_flow)

• Evidence kind: Calculated from collection (calculated_from_collection)

• Collection protocol: cp_material

• Sources: usda-wood-handbook-2021

7. Allocation and Co-product Handling

The dry-mass fallback is a candidate PCR methodological choice for residual joint dry material conversion, subject to site causal assessment and independent review. Wood Handbook supports only moisture-to-dry-mass measurement, not allocation approval. Do not use a dry-mass share for dedicated geometric machining or services with a demonstrated different driver.

rule_id	Applies to	Rule	source_ids
allocation_avoid	cohort operations	First separate operations/meters by accepted geometry/species and by coproduct destination. Dedicated operations belong to their output. Distinguish physical waste from genuine marketable coproduct using contract/specification/receiver evidence; a receipt of revenue alone is not methodological approval.	hastiles-packaging-wedges
allocation_joint	unavoidable joint burdens	For unavoidable joint dry sawing burdens without a demonstrated causal alternative, use site-measured oven-dry mass shares of accepted wood and genuine coproducts. State products, measured moisture and sums; disclose justification and test an economic-share sensitivity with same-period prices if decision-relevant. Do not allocate burdens to discarded wastes or assume zero disposal burden. Preserve actual full physical outputs and water/carbon ledgers; allocated external input/emission values are a separate account. No survey shares or substitution credit.	usda-wood-handbook-2021

8. Foreground Data Collection, Calculation, and Quality Rules

Data Collection Protocols

protocol_id	process_id	flow_role	record_type	raw_fields	collection_method	unit	frequency	temporal_coverage	site_scope	aggregation_rule	quality_evidence
cp_reference	manufacture	accepted wood denominator	collected_record	lot; order; species; geometry; taper/contour/notch; grain; moisture; net mass; wrapping tare; defects; fit acceptance; rejects; period	Calibrated scales and order-linked dimensional/grain/fit inspection at dispatch; retain net weighing and acceptance trace Aggregation: Accepted net wood kg divided by the same accepted net wood kg: per 1 kg reference flow	kg	each accepted lot	one common disclosed cohort	one workshop; geometry/species separately	per 1 kg reference flow	Scale calibration; order drawings; acceptance/rejection records
cp_material	manufacture	stock, moisture, water and carbon	collected_record	supplier; species; treatment; wet mass; paired oven-dry specimens; geometry; carbon fraction analysis; beginning/end stock; evaporation evidence	Calibrated stock weighing, representative paired moisture samples oven-dried to constant mass; record sampling coverage and uncertainty; independently evidence carbon fraction; reconcile gate water Aggregation: Each unallocated cohort mass/positive evaporation total divided by accepted net wood kg: per 1 kg reference flow	kg	each stock lot and dispatch cohort	same common cohort	same workshop and receiving gate	per 1 kg reference flow	Supplier boundary; oven/scales calibration; sampling and analysis files
cp_energy	manufacture	electricity by stage	collected_record	meter start/end; kWh; voltage; site; period; machine runtime; standby; dust fan; electric handling; shared-use split	Calibrated stage meters; reconcile purchased delivery with sawing/fans/handling/dispatch; evidence any shared-service driver Aggregation: Unallocated attributed delivered MJ divided by accepted net wood kg: per 1 kg reference flow	kWh; MJ	continuous meters; cohort reconciliation	same common cohort	same workshop and customer-side supply	per 1 kg reference flow	Meter certificates; supplier voltage/geography/period; splits
cp_auxiliary	manufacture	oil, PE film and their destinations	collected_record	SDS; actual polymer/oil formulation; supplier; issue mass; opening/closing stocks; shipped wrapping; trimming mass; used oil; base oil/additives; contaminants; source equipment; receiver treatment; provider reference-quantity basis; retained oil	Weigh issues, wrap and trimmings separately; reconcile consumption and stocks; maintenance logs attribute oil; manifests identify actual waste receiver Aggregation: Each unallocated attributed material total divided by accepted net wood kg: per 1 kg reference flow	kg	each issue/dispatch/maintenance event	same common cohort; maintenance interval disclosed	same workshop and contracted providers	per 1 kg reference flow	Scales; SDS/invoices; transfer notes; residual/stock balances
cp_residue	manufacture	offcuts and sawdust by destination	collected_record	origin stage; species; particle form; glue/coating contamination; wet/dry mass; moisture; internal returns; stock; contracts; price; receiver; lawful product/waste status; buyer-accepted specification and intended use; dimensions/particle size; provider reference-quantity basis	Weigh each separated stream; representative paired moisture tests; reconcile offcuts/captured dust/sold products/waste without duplicate destinations Aggregation: Each unallocated stream total divided by accepted net wood kg: per 1 kg reference flow	kg	each collection/transfer and cohort close	same common cohort	same workshop; named receivers	per 1 kg reference flow	Scales; moisture; contracts; receiver classification; disposal evidence
cp_dust	manufacture	three disjoint emitted PM sizes	collected_record	outlet/fugitive source; PM2.5; PM10; compatible total particulate; sampling basis; exhaust volume; hours; controls; captured dust; detection limits; uncertainty	Site-specific post-control monitoring with documented size, sampling and dry/wet standard volume bases; representative campaigns linked to production hours; no direct EPA PTE transfer Aggregation: Each actual emitted non-overlapping cohort mass divided by accepted net wood kg: per 1 kg reference flow	kg	representative campaign plus operation/control logs	same common cohort	same workshop; specified outdoor-air release	per 1 kg reference flow	Accredited method; matched size basis; control logs; uncertainty and detection evidence

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
normalize_cohort	all inventory rows	For each exchange, sum unallocated same-cohort measured amounts after stock reconciliation and divide once by accepted net wood kg. finished_out is 1 kg. Retain physical values separately from burden allocation.	cp_reference; cp_material; cp_energy; cp_auxiliary; cp_residue; cp_dust	physical exchange per 1 kg reference flow
energy_conversion	electricity_in	Multiply metered delivered kWh by3.6 to MJ before cohort normalization; do not confuse fuel heat with electricity.	cp_energy	delivered MJ
dry_balance	wood and residue ledger	Convert each measured wet mass using its own dry-basis moisture per moisture_basis. Dry inputs plus stock decrease equal dry accepted wood, coproducts, discarded wood, emitted wood dust and unexplained residual. Keep water and carbon balances separate; investigate uncertainty rather than assigning a made-up yield.	cp_material; cp_reference; cp_residue; cp_dust	unallocated dry mass, water and carbon closure	usda-wood-handbook-2021
dust_bins	pm_fine; pm_coarse; pm_large	When nested quantities are measured under identical conditions: fine=PM2.5; coarse=PM10-PM2.5; large=compatible total particulate-PM10. Require nonnegative differences and consistent methods/coverage. Otherwise measure disjoint bins or retain missing-bin uncertainty. Never sum PM2.5+PM10+total or subtract incompatible condensable/filterable measurements.	cp_dust	three disjoint emitted masses	epa-sawmill-pte-2014
burden_shares	joint burdens only	Use each accepted product or genuine coproduct dry mass divided by the sum of those dry masses for residual joint burdens after subdivision. Shares sum to1; do not apply shares to physical outputs, waste or internal links. Document any justified causal alternative.	cp_reference; cp_material; cp_residue	separate allocated environmental-burden account	usda-wood-handbook-2021
complete_period_normalization	all inventory rows	Every existing campaign, batch or lot amount rule and linked collection protocol uses one documented complete reporting-period pool for the same declared product, grade, route, configuration, site and reference state. Accepted-lot wording identifies the denominator only; retain all attributable startup, shutdown, wholly failed or zero-output batches, rejects, work in progress and rework in the raw native-unit numerator records. Count reworked reference product once only when finally accepted. Sum each attributable exchange over this matched pool, divide once by its strictly positive accepted reference-product quantity in the declared denominator unit, and scale to the declared reference quantity. Do not average batch ratios, drop a failed batch, pool unrelated products/periods or replace native numerator units. If the entire matched pool has no accepted output, retain the unnormalized absolute inventory and require review; issue no normalized result or fabricated output. Preserve stock/return and physical-transfer ledgers independently of burden allocation; allocation never removes already-incurred failed/rework activity.	all linked raw collection protocols; accepted reference-product pool; stock and rework links	native exchange unit per declared reference quantity; zero-output pool remains unnormalized

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
dq_route	manufacture	Prove dry purchased stock, actual shaped packaging end-state and cold electric route; exclude incompatible treatment/assembly. Document absence rather than assume.	cp_reference; cp_material; cp_energy
dq_identity	each external flow and background	Verify physical identity separately from measured quantity and provider dataset basis. Blank UUIDs and classification conflicts remain visible; all material missing exchanges/backgrounds block a complete dataset claim.	Direct identity records; supplier/receiver specifications; uncertainty log
dq_period	all records	Same disclosed cohort/site, traceable source periods and stock changes; keep collection totals, allocation drivers and detection limits. No universal manufacturing ranges inferred.	cp_reference; cp_material; cp_energy; cp_auxiliary; cp_residue; cp_dust

9. Validation Rules

rule_id	Applies to	Rule	source_ids
validate_reference	finished_out	Exactly one reference output is 1 kg accepted net wood; reference link, UUID, Mass/kg, geometry/function, moisture and packaging exclusion must agree. Do not duplicate its UUID as an intermediate product output.	ctu-code-2014; hastiles-packaging-wedges
validate_balance	physical and allocated accounts	Close raw mass/water/carbon within documented measurement uncertainty; same internal transfer has equal quantities at both ends. Reconcile wrapping consumed=shipped+trimmings+stock change; oil issue=used oil+retention+documented loss+stock change. No balancing invented emissions or allocating physical coproduct amounts.	usda-wood-handbook-2021
validate_dust	dust emissions	Check three non-overlapping size bins, compatible monitoring/volume basis and post-control outdoor compartment. Captured and emitted dust cannot be counted twice. PTE values, unspecified-size PM or missing bins cannot prove measured complete emissions.	epa-sawmill-pte-2014
validate_completeness	data release	Resolve all applicable material UUID/background gaps and supplier/receiver compatibility; disclose source classification defects and uncertain coverage. Every added actual flow is atomic and audited. An unavailable identity, incomplete physical balance or unmeasured material emission fails a complete-dataset claim; passing a structural PCR check does not approve methodology or fill missing field data.
validate_treatment	product status	No ISPM15 certification, heat-treatment, load rating, life-cycle completeness or full CPC31709 coverage follows from this manufacturing reference. Reject incompatible states unless the method is formally extended with evidence.	ippc-ispm15-2018

10. Published Dataset Profile

Field	Value
dataset_role	secondary_dataset; background_dataset
downstream_use	Only completed compatible manufacturing inventory for specified untreated shaped packaging articles
allowed_use	Supplier-specific packaging component burdens at matched net wood/moisture/geometry gate; cargo-support model with separately demonstrated suitability
excluded_use	Cargo securement certification, installation/transport/use/EOL, treated/composite articles, generic sawnwood, equivalent restraint per kg, automatic full CPC31709 mapping
required_metadata	All reference qualifiers; site/cohort; starting gate; stock/upstream sources; allocated and physical accounts; inventory/protocol links
required_quality_disclosure	Meter/sampling/uncertainty; moisture/carbon basis; dust coverage; source identity defects; unresolved applicable UUIDs/backgrounds; allocation justification/sensitivity; excluded stages
update_trigger	Changes to geometry/application, stock species/treatment/moisture, site equipment/control/supply, provider definitions, residue fate, source metadata or verified inventory gaps

11. Data Sources

Source id	Type	Reference	Used for
hastiles-packaging-wedges	extension_guidance	H.A. Stiles, Wood Wedges & Corner Blocks; Use Cases; Materials and Options	Primary manufacturer page: shaped dry pine/poplar packaging options; exclude particleboard, green wood, construction uses and optional finishes. No LCI values.
ctu-code-2014	official_guidance	IMO/ILO/UNECE CTU Code, January 2014; Annex7 §2.3.5, Figure7.7, PDF p83	Cargo-blocking wedge grain/design qualifier only; no default force, dimensions or lifespan; downstream installation separate.
usda-wood-handbook-2021	handbook	USDA FPL Wood Handbook, FPL-GTR-282 (2021); Ch4, printed p4–1, eq4-1/4-2	Dry-basis moisture and matched-state mass accounting; no species density, moisture target, carbon fraction or industry yield adopted.
epa-sawmill-pte-2014	official_guidance	EPA Region10 sawmill PM PTE memorandum, May8 2014; activity table headers/footnotes; cover memorandum	Mechanical dust screening and nested PM/PM10/PM2.5 interpretation only; excludes boilers. No geographic/species PTE factors transferred as actual packaging emissions.
ippc-ispm15-2018	standard	IPPC ISPM15, 2018 text; scope and processed-wood exemptions	Solid-wood dunnage trade limitations; cold sawing does not confer exempt status or export certification. Current provider publication page should be consulted for actual destination obligations.