Component Count Change

What this report does

Shows how the component population changed within a selected date range, broken down by unit. For each unit, the report shows the number of active components at the start of the period, how many were added during the period, how many were deactivated, and how many remain active at the end.

The report is scoped to a single regulation — only components mapped to that regulation are counted. Use it to verify that component counts match your regulatory records and to document additions and deactivations for a reporting period. This report is in the Compliance folder on the Reports tab.

When to use it

• Confirming component counts before submitting a semi-annual or annual regulatory report.
• Documenting equipment additions and deactivations within a compliance period.
• Reviewing count changes by unit when population changes are under scrutiny.

Parameters

⚠ Date truncation — always use month boundaries. The report operates on full calendar months. A Start Date of December 4 becomes December 1; an End Date of May 20 becomes May 31. Enter the first day of the first month and the last day of the last month to ensure the period matches your records exactly.

Columns

What's included and excluded

Included:

• Only components mapped to the selected regulation.
• Only components of the selected type(s).
• Only components in the selected unit(s).

Excluded:

• Components not mapped to the selected regulation.
• Components that were already deactivated before the period and were not reactivated — they do not appear in Beginning Count or End Count.

How key values are calculated

Beginning Count

Components that had an active (non-deactivated) profile at the start of the period. A component that was deactivated before the period begins is not counted, even if it was later reactivated during the period.

Total Additions During Period

Components whose add date falls within the period window. This reflects newly created components — not reactivations of previously deactivated ones.

Total Deactivations During Period

Components whose most recent profile transition during the period was a deactivation.

End Count

Components with an active (non-deactivated) profile at the end of the period. The relationship between the four values is:

Beginning Count + Total Additions − Total Deactivations = End Count

Tips and common questions

• "The Start Date I entered is not what the report used." The report silently expands your date range to full calendar months — see the date truncation warning under Parameters. Always use the first day of the first month and the last day of the last month.
• "A unit I selected is not showing in the output." Units with zero components mapped to the selected regulation return no row. If you expect a unit to appear, confirm it has components with the selected regulation assigned.
• "Beginning Count plus Additions minus Deactivations does not equal End Count." This can happen when a component was both added and deactivated within the same period — it would be counted in Additions and Deactivations but would not appear in End Count.
• "The Comp Types parameter shows all types but I only need one." Selecting all types (the default) includes every component type in the counts. To isolate a single type — for example, to verify valve counts separately — deselect all and choose only the type you need.
• "A reactivated component does not appear in Additions." This report counts initial activations only. A component that was deactivated and then reactivated during the period increments End Count but does not increment Additions. To see reactivated components, use the Reactivated Components report.
• "The counts on this report may not match the Periodic Inspection Summary exactly." The Periodic Inspection Summary calculates Start Count and End Count using a different method and applies additional filters (regulation, component type, frequency). Use this report for a straightforward unit-level population change summary; use Periodic Inspection Summary when you need regulation-scoped counts.
• "Start Count + Additions − Deactivations may not equal End Count exactly." A component that was both added and deactivated within the same period contributes to both Additions and Deactivations but does not appear in End Count. This edge case can cause the population formula to not balance.

Sample output

Report run for Example Facility, Regulation: Consent Decree, Unit Type: Location Unit, Comp Types: All Component Types, StartDate: 1/1/2023, EndDate: 6/30/2023.

What the rows illustrate:

• ALKY — 27 additions and no deactivations: 801 + 27 − 0 = 828. Net gain of 27.

• CRUDE — 37 additions and 3 deactivations: 1572 + 37 − 3 = 1606. Net gain of 34.

• TRUCK LOADING — No population change during the period: Beginning Count equals End Count (110).

• TANK FARM — No additions, 4 deactivations; 713 + 0 − 4 = 709. Net loss of 4.

• ALKY 2 — 12 additions and 2 deactivations: 1436 + 12 − 2 = 1446. Net gain of 10.

• CRUDE 2 — Most active unit: 25 additions and 40 deactivations: 2052 + 25 − 40 = 2037. The only unit where deactivations exceed additions, resulting in a net loss of 9.

Output format

One row per unit. Suitable for on-screen viewing, PDF, and Excel export.