EP 1110-1-19
30 Jun 01
c.
Periodic costs are those capital or O&M costs that occur only once every few
years (e.g., five-year reviews, equipment replacement) or expenditures that occur only once
during the entire O&M period or remedial timeframe (e.g., site close out). Periodic costs can be
incurred during the RA operating period, but are more likely to be incurred during the post-RA
O&M period. Either the RA or O&M WBS can be used to report periodic costs.
Exhibit 6-1
Relationship of Capital and O&M Costs to Pipeline Phases
6-3. Cost Element Structure. All applicable capital, O&M, and periodic costs should be
documented in the RA report. To help identify the cost element structure to report costs; capital,
O&M, and periodic cost elements are described in Exhibits 6-2, 6-3, and 6-4, respectively.
Exhibits 6-2 and 6-3 includes second-level elements from the HTRW RA and O&M work
breakdown structures, respectively, for construction and O&M activities. Professional/technical
services and institutional controls have been added to the descriptions in Exhibits 6-2 and 6-3;
however, these costs are not reported into HCAS. More information on the RA and O&M work
breakdown structures is provided below.
a.
The RA WBS, Account 33XXX, includes construction (RA capital) and operation
during the remedial action (RA operating). Account 33XXX excludes all project management at
all phases and excludes pre construction investigations and remedial design. Account 33XXX
excludes post construction O&M, which is in Account 34XXX.
b.
The O&M WBS, Account 34XXX, includes post construction O&M (post RA
O&M), which is long term, indefinite term, or caretaker status following remedial action.
Account 34XXX includes such items as operation labor and equipment, maintenance and repair,
fuel, utilities, bulk chemicals, raw materials, plant ownership/rental, plant upgrades and
replacements, transport waste materials to the plant, preparation and handling of waste materials
at the plant, training, regulatory approvals, etc.
6-4. Capital Cost Elements. The majority of the capital cost elements listed in Exhibit 6-2
are construction activities (e.g., sitework) that are incurred as part of the physical construction of
the RA.
Project management, remedial design, and construction management are
6-2
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