ICR Attachment 3: ICR-related Calculations

OMB Control Number 2070-0162; EPA ICR Number 1884.04

ICR Attachment 3

IUR ICR Calculations Calculation of Number of Reports For IUR Reporting

Based on 2006 IUR Reporting (October 2007)

a. Total # Form U’s	4,190
b. Total # Reports1	28,398
c. # Reports with volume < 300K lbs.1	10,611
d. # Reports with volume >= 300K lbs.1	17,787
Full Reports
e. # Reports with Processing or Use data	9,310	(# full rpts)
f. # Reports with Processing or Use data but <300 K lb	959	(full rpts but under 300K lb.threshold)
g. #Reports with Processing or Use data >= 300K	8,351
Inorganic Chemicals
h. Total Reports	6,513
i. Reports <300K lbs.	1,834
j. Reports >=300K lbs.	4,679
# Discrete Chemicals	7,641

Because inorganic chemicals are no longer partially exempt, only those chemicals with volumes <300K lbs and partially exempt listed chemicals (e.g., petroleum process streams) do not report processing and use information OR complete a partial Form U.

Calculation for Estimated Number of Full and Partial Reports

Approach 1. Determine the number of estimated reports for listed chemicals using est. number of full reports expected (based on volume) and subtracting the number of full reports received. The number of remaining reports are those that meet the volume threshold but did not complete full form. They are then partitioned into reports on inorganics and others, where others are expected to be due to listed chemicals.

A. Calculate reports for listed chemicals that will be partially exempt.

1a. Total reports >= 300K (d)	17,787	(expected full rpt)
Total number of full reports (e)	- 9,310	(full reports received)
Est. # Reports >=300 K w/partial reports submitted	8,477

2. Remove inorganics >= 300K lbs
Est. # reports attributable to ’06 partially exempt chemicals (inorganics and partially exempt listed chemicals)	8,477
# inorganic reports >= 300K (j)	- 4,679	(# inorganic Reports >= 300K)
Est. Partial Reports due to listed chemicals only	3,798

B. Estimated Numbers of Full Reports
1. Calculate number of reports >= 300k minus	17,787	(# reports >= 300K)
Reports from partially exempt chemicals	- 3,798	(# reports from partially exempt chems >= 300K)
	13,989	(Est. # full reports)

C. Estimated Number of Partial Reports	10,611	(# reports < 300K)
	+ 3,798
	14,409

1 Report refers to an individual chemical-site combination. Companies generally submit one Form U per site, addressing multiple chemicals, and therefore, multiple chemical “reports” per site.