Appendix D – Analysis of Changes

The table below presents all line items from the ICR with a greater than 50 percent change (positive or negative) from the currently approved ICR

(i.e., OMB’s inventory). It also includes an explanation of the reason for the change and the quality assurance actions to verify the validity of these 

changes. 

Reference 

Code

Activity Description Respondent Type Total 

Hours / 

Year

(Renewal)

Total 

Hours / 

Year 

(OMB)

% 

Change

Reason for Change

2.16 Great Lakes 

Antidegradation 

Demonstration

Nonmunicipal - BCCs 140 351 -60% Burden for the activity was divided by two 

because some of the burden is accounted 

for in the Water Quality Standards ICR.

2.17 Great Lakes 

Antidegradation 

Demonstration

Nonmunicipal - non-BCCs 93 234 -60%

4.65 Other Noncompliance 

Reports

CAFOs 0 790 -100% Burden moved to the Animal Sector ICR

4.66 Other noncompliance 

Reports (CAFO 

Permittees)

NPDES States 0 306 -100%

1.23 Permit Consolidation Industry 0 4 -100% EPA anticipates that 0 facilities will file 

Permit Consolidation Requests each year 

1.24 Permit Consolidation NPDES States, Facilities 0 1 -100%

7.2 Request for NPDES 

Partial Program Approval

NPDES States 0 693 -100% EPA anticipates that no states that 

currently are not authorized to implement 

the NPDES program will seek partial 

program authorization during the life of 

this ICR. 

6.3 Section 308(a) Letters General Stormwater Permittees 

Industrial

3,208 1,712 87% EPA estimates that 1,200 permittees will 

be required to respond to a section 308(a) 

letter. These are allocated based on the 

number of permits and the type of 

permits. The change in stormwater 

permittees affects the allocation of these 

letters.

6.4 Section 308(a) Letters MS4s (Phase I and II) 248 120 107%

7.1 Request for NPDES 

Program Approval

NPDES States 0 693 -100% EPA expects that no states will request 

full program authorization during the life of 

this ICR. 
Reference 

Code

Activity Description Respondent Type Total 

Hours / 

Year

(Renewal)

Total 

Hours / 

Year 

(OMB)

% 

Change

Reason for Change

2.83 Development of SWPPP Large construction sites (>5 

acres) in NPDES States

1,260,277 5,262,057 -76% EPA generated a new estimate of 

construction sites based on data collected 

for the development of the final 

Construction Effluent Limitation 

Guidelines. The Agency revised its 

estimate of the number of large and small 

construction sites covered by this ICR 

downward from 243,076 to 84,472 sites 

annually (Continued through

2.84 Development of SWPPP Large construction sites (>5 

acres) EPA Perm Auth no ESA

41,059 187,314 -78%

2.85 Development of SWPPP Large construction sites (>5 

acres) EPA Perm Auth informal 

ESA

25,516 116,444 -78%

2.86 Development of SWPPP Large construction sites (>5 

acres) EPA Perm Auth formal 

ESA

1,856 8,445 -78%

3.98 Routine site inspection Large construction sites (>5 

acres) in NPDES States

450,099 1,879,306 -76%

3.99 Routine site inspection Large construction sites (>5 

acres) EPA Perm Auth no ESA

14,664 66,898 -78%

3.1 Routine site inspection Large construction sites (>5 

acres) EPA Perm Auth informal 

ESA

9,113 41,587 -78%

3.101 Routine site inspection Large construction sites (>5 

acres) EPA Perm Auth formal 

ESA

663 3,016 -78%

4.319 Permittee Report of 

Planned Facility Changes

Construction Stormwater General 

Permittees

1,640 4,772 -66%

4.320 Permittee Report of 

Planned Facility Changes

NPDES States, Construction 

Stormwater General Permittees

8,200 23,860 -66%

4.321 Permittee Report of 

Anticipated 

Noncompliance

Construction Stormwater General 

Permittees

410 1,195 -66%

4.322 Permittee Report of 

Anticipated 

Noncompliance

NPDES States, Construction 

Stormwater General Permittees

780 2,260 -66%

4.323 Facility and Permit 

Transfer Report

Construction Stormwater General 

Permittees

246 717 -66%

4.324 Facility and Permit 

Transfer Report

NPDES States, Construction 

Stormwater General Permittees

312 904 -66%

4.325 Permittee Report of 

Inaccurate Previous 

Information

Construction Stormwater General 

Permittees

82 238 -66%

4.326 Permittee Report of 

Inaccurate Previous 

Information

NPDES States, Construction 

Stormwater General Permittees

156 448 -65%
Reference 

Code

Activity Description Respondent Type Total 

Hours / 

Year

(Renewal)

Total 

Hours / 

Year 

(OMB)

% 

Change

Reason for Change

4.327 Unanticipated Bypass / 

Upset Reports (Verbal 

Reports)

Construction Stormwater General 

Permittees

410 1,195 -66%

4.328 Unanticipated Bypass / 

Upset Report (Verbal 

Notification)

NPDES States, Construction 

Stormwater General Permittees

78 225 -65%

4.329 Unanticipated Bypass / 

Upset Report (Immediate 

Action)

NPDES States, Construction 

Stormwater General Permittees

39 113 -65%

4.330 Unanticipated Bypass / 

Upset Reports (Written 

Reports)

Construction Stormwater General 

Permittees

124 358 -65%

4.331 Unanticipated Bypass / 

Upset Report (Written 

Report)

NPDES States, Construction 

Stormwater General Permittees

118 338 -65%

4.332 Maximum Daily Violation 

Reports (Verbal Reports)

Construction Stormwater General 

Permittees

234 675 -65%

4.333 Maximum Daily Violation 

Report (Verbal 

Notification)

NPDES States, Construction 

Stormwater General Permittees

78 225 -65%

4.334 Maximum Daily Violation 

Report (Immediate 

Action)

NPDES States, Construction 

Stormwater General Permittees

39 113 -65%

4.335 Maximum Daily Violation 

Reports (Written Reports)

Construction Stormwater General 

Permittees

78 226 -66%

4.336 Maximum Daily Violation 

Report (Written Report)

NPDES States, Construction 

Stormwater General Permittees

78 226 -66%

4.337 Other Noncompliance 

Reports

Construction Stormwater General 

Permittees

4,105 11,930 -66%

4.338 Other Noncompliance 

Reports (NPDES 

Permittee Reports)

NPDES States, Construction 

Stormwater General Permittees

1,556 4,504 -66%

5.44 Recordkeeping Large construction sites (>5 

acres) in NPDES States

13,849 57,825 -76%

5.45 Recordkeeping Large construction sites (>5 

acres) EPA Perm Auth no ESA

451 2,058 -78%

5.46 Recordkeeping Large construction sites (>5 

acres) EPA Perm Auth informal 

ESA

280 1,280 -78%

5.47 Recordkeeping Large construction sites (>5 

acres) EPA Perm Auth formal 

ESA

20 93 -78%
Reference 

Code

Activity Description Respondent Type Total 

Hours / 

Year

(Renewal)

Total 

Hours / 

Year 

(OMB)

% 

Change

Reason for Change

5.48 Recordkeeping of 

Inspections

Stormwater General Permittees, 

Construction

328,294 954,316 -66%

6.34 Inspection & Investigation 

of NPDES permittees -

Stormwater General 

(large Construction) - RI

NPDES States 13,848 57,824 -76%

1.124 NOI preparation & 

submittal

Large construction sites (>5 

acres) in NPDES States

51,935 216,843 -76%

1.125 NOI preparation & 

submittal

Large construction sites (>5 

acres) EPA Perm Auth no ESA

1,692 7,719 -78%

1.126 NOI preparation & 

submittal

Large construction sites (>5 

acres) EPA Perm Auth informal 

ESA

4,206 19,194 -78%

1.127 NOI preparation & 

submittal

Large construction sites (>5 

acres) EPA Perm Auth formal 

ESA

1,020 4,640 -78%

1.128 NOI Processing & review NPDES States, Large 

construction sites (>5 acres) 

34,623 144,562 -76%

1.133 Prepare and submit a 

NOT

Large construction sites (>5 

acres)

18,252 76,569 -76%

1.134 NOT processing NPDES States, Large 

Construction

8,656 36,141 -76%

3.102 Monitoring Construction Sites 35,031 10,135 246% Formula correction from previous ICR. 

4.137 Permittee Report of 

Inaccurate Previous 

Information

Minor Municipal 378 208 82% Formula correction from previous ICR. 

4.138 Permittee Report of 

Inaccurate Previous 

Information

NPDES States, Minor Municipal 744 408 82%

6.20 Inspection & Investigation 

of NPDES permittees -

PCI

NPDES States 0 21,408 -100% This burden has been transferred to the 

Pretreatment ICR (OMB Control No. 

2040-0009).

1.104 Form 1 Individual Stormwater Permits, 

New

258 166 55% More new individual NPDES stormwater 

permits were issued in the last 3-years 

than in the 3 years prior to the last ICR 

Update. (86 vs. 55)

1.105 Form 1 NPDES States, New Facilities 

Individual Stormwater Facilities

42 27 56%

5.38 Recordkeeping (Develop 

recordkeeping system; 

enter data; train 

personnel; and file 

information)

Individual Stormwater Permits 

New

129 83 55%
Reference 

Code

Activity Description Respondent Type Total 

Hours / 

Year

(Renewal)

Total 

Hours / 

Year 

(OMB)

% 

Change

Reason for Change

1.50 Form 2S PrOTWs, Sludge Only 572 378 52% Number of Sludge Only Nonmunicipal 

permits in ICIS is proportionally larger 

than the number of permits reported in 

PCS. More states are under ICIS now.

5.13 Recordkeeping (Develop 

recordkeeping system; 

enter data; train 

personnel; and file 

information)

Nonmunicipal, Sludge Only 99 65 52%

4.15 Permittee Report of 

Inaccurate Previous 

Information

Minor Nonmunicipal 1,126 710 59% Significant reduction in the number of 

Existing Minor NPDES Permits based on 

EPA's direction to account for data entry 

4.16 Permittee Report of errors in ICIS. 

Inaccurate Previous 

Information

NPDES States, Minor 

Nonmunicipal

2,212 1,392 59%

7.5 Request for NPDES 

Program Modification -

Update Legal Authority in 

Other Areas

NPDES States 3,083 333 825% The Agency anticipates that all authorized 

states will revise their programs to update 

their legal authorities in response to the 

multiple rulemakings anticipated in the 

NPDES program. 

4.106 Permittee Report of 

Anticipated 

Noncompliance

NPDES States, Nonmunicipal 

Sludge

0 10 -100% The previous ICR had one permittee 

responding to this activity. Mathematical 

restriction to prevent less than full 

permittees (i.e., rounding) to be counted 

and the combination of updating the 

number of permits and the allocation of 

permits to authorized vs. non-authorized 

states based on the number of permits 

and not population.

4.108 Facility and Permit 

Transfer Report

NPDES States, Nonmunicipal 

Sludge

0 4 -100%

4.110 Permittee Report of 

Inaccurate Previous 

Information

NPDES States, Nonmunicipal 

Sludge

0 4 -100%

4.193 Facility and Permit 

Transfer Report

NPDES States, Municipal Sludge 0 4 -100%

3.57 DMR Sampling Minor Municipal Dischargers, 

Bimonthly Reporting

2,650 580 357% The total number of Minor (Municipal) 

Dischargers that report Bimonthly has 

increased. Reporting frequency fields in 

ICIS are easier to interpret than those in 

PCS. More States are now under ICIS.

3.63 DMR Sampling Analysis Minor Municipal Dischargers, 

Bimonthly Reporting

5,630 1,232 357%

4.147 DMR Reporting Minor Municipal Dischargers, 

Bimonthly Reporting

1,152 252 357%

4.148 DMR Administration NPDES States, Minor Municipal 

Dischargers, Bimonthly Reporting

149 34 343%
Reference 

Code

Activity Description Respondent Type Total 

Hours / 

Year

(Renewal)

Total 

Hours / 

Year 

(OMB)

% 

Change

Reason for Change

3.3 DMR Sampling Minor Nonmunicipal Dischargers, 

Bimonthly Reporting

9,853 4,885 102% The total number of Minor (nonmunicipal) 

Dischargers that report Bimonthly has 

increased. Reporting frequency fields in 

ICIS are easier to interpret than those in 

PCS. More States are now under ICIS.

3.1 DMR Sampling Analysis Minor Nonmunicipal Dischargers, 

Bimonthly Reporting

20,938 10,381 102%

4.25 DMR Reporting Minor Nonmunicipal Dischargers, 

Bimonthly Reporting

4,284 2,124 102%

4.26 DMR Administration NPDES States, Minor 

Nonmunicipal Dischargers, 

Bimonthly Reporting

562 278 102%

3.81 DMR Sampling General Non-stormwater 

Permittees (State) - SemiAnnually

977 0 N/A Total Number of Non-Stormwater General 

Permittees decreased by EPA. (Jackie 

Clark) Additionally, the percent of Nonstormwater General Permittees not 

required to report has increased, and 

there is a move from monthly and 

quarterly sampling to semiannual and 

annual.

3.82 DMR Sampling General Non-stormwater 

Permittees (State) - Quarterly

47,538 109,944 -57%

3.83 DMR Sampling General Non-stormwater 

Permittees (State) - Bimonthly

49,194 23,720 107%

3.87 DMR Sampling Analysis General Non-stormwater 

Permittees (State) - SemiAnnually

651 0 N/A

3.88 DMR Sampling Analysis General Non-stormwater 

Permittees (State) - Quarterly

31,692 73,296 -57%

3.89 DMR Sampling Analysis General Non-stormwater 

Permittees (State) - Bimonthly

32,796 15,813 107%

4.225 DMR Reporting General Non-stormwater 

Permittees (State) - SemiAnnually

868 0 N/A

4.226 DMR Reporting General Non-stormwater 

Permittees (State) - Quarterly

42,256 97,728 -57%

4.227 DMR Reporting General Non-stormwater 

Permittees (State) - Bimonthly

43,728 21,084 107%

3.47 DMR Sampling Sludge Only, Class I Mgmt 

Facilities (Industrial)

2,440 536 355% Uncertainty attached to sludge permits 

(i.e., unknown sludge class) has 

decreased in the number reported in ICIS 

from the numbers reported in PCS. This 

increases the number of Class I facilities 

and reduces the number of Non-Class I 

facilities.

3.51 DMR Sampling Analysis Sludge Only, Class I Mgmt 

Facilities (Industrial)

7,319 1,607 355%

3.69 DMR Sampling Sludge Only, Class I Mgmt 

Facilities (Municipal Biosolids)

10,784 1,927 460%

3.70 DMR Sampling Sludge Only, Non-Class I Mgmt 

Facilities (Municipal Biosolids)

31 5,916 -100%

3.73 DMR Sampling Analysis Sludge Only, Class I Mgmt 

Facilities (Municipal Biosolids)

32,353 5,780 460%
Reference 

Code

Activity Description Respondent Type Total 

Hours / 

Year

(Renewal)

Total 

Hours / 

Year 

(OMB)

% 

Change

Reason for Change

3.74 DMR Sampling Analysis Sludge Only, Non-Class I Mgmt 

Facilities (Municipal Biosolids)

52 9,861 -100%

4.111 DMR Reporting Sludge Only, Class I Mgmt 

Facilities (Industrial)

1,626 357 355%

4.112 DMR Administration NPDES States Sludge Only, 

Class I Mgmt Facilities (Industrial)

82 25 224%

4.114 DMR Administration NPDES States Sludge Only, NonClass I Mgmt Facilities (Industrial)15 31 -51%

4.196 DMR Reporting Sludge Only, Class I Mgmt 

Facilities (Municipal Biosolids)

7,190 1,284 460%

4.197 DMR Administration NPDES States Sludge Only, 

Class I Mgmt Facilities (Municipal 

Biosolids)

364 90 303%

4.198 DMR Reporting Sludge Only, Non-Class I Mgmt 

Facilities (Municipal Biosolids)

2 394 -100%

4.199 DMR Administration NPDES States Sludge Only, NonClass I Mgmt Facilities (Municipal 

Biosolids)

1 277 -100%

5.14 DMR Recordkeeping Sludge Only, Class I Mgmt 

Facilities (Industrial)

138 30 355%

5.26 DMR Recordkeeping Sludge Only, Class I Mgmt 

Facilities (Municipal Biosolids)

611 109 460%

5.27 DMR Recordkeeping Sludge Only, Non-Class I Mgmt 

Facilities (Municipal Biosolids)

0 34 -100%

5.31 DMR Recordkeeping 

Only

Sludge Only, Non-Class I Mgmt 

Facilities (Municipal Biosolids)

14 2,662 -100%

1.140 NOI Filing Tank Ships 731 402 82% Vessels Universe updated based on 

information in the Economic and Benefits 

Analysis of the 2013 Vessel General 

Permit (VGP), September 2011. One time 

reporting activities already completed by 

most permitted vessels. NOI 

1.143 NOI Filing Passenger Vessels 66 248 -73%

3.105 Routine Inspections Tank Ships 2,014 1,011 99%

3.106 Routine Inspections Commercial Fishing 1,168 4,813 -76%

3.108 Routine Inspections Passenger Vessels 918 2,270 -60%

3.114 Annual Inspections Tank Ships 6,739 3,661 84%

3.115 Annual Inspections Commercial Fishing 1,184 4,813 -75%
Reference 

Code

Activity Description Respondent Type Total 

Hours / 

Year

(Renewal)

Total 

Hours / 

Year 

(OMB)

% 

Change

Reason for Change

3.117 Annual Inspections Passenger Vessels 990 2,321 -57%

4.339 One Time Reporting Cruise Ships 2 18 -90%

4.340 One Time Reporting Freight Ships 290 613 -53%

4.342 One Time Reporting Commercial Fishing 0 963 -100%

4.343 One Time Reporting Freight Barges 820 3,171 -74%

4.344 One Time Reporting Passenger Vessels 0 466 -100%

4.346 One Time Reporting Utility Vessels 23 642 -96%

4.347 One Time Reporting Tank Barges 229 488 -53%

5.51 Recordkeeping Activities Tank Ships 2,020 1,074 88%

5.52 Recordkeeping Activities Commercial Fishing 1,175 4,813 -76%

5.54 Recordkeeping Activities Passenger Vessels 949 2,292 -59%

2.30

Documenting Nine 

Minimum Control 

Measures - O&M POTWs - Small 0 17 -100.0%

All CSO permits or enforcement orders 

have fulfill the obligation of Phase I 

technology-based CSO control 

requirements (Nine Minimum Controls)

2.31

Documenting Nine 

Minimum Control 

Measures - O&M POTWs - Medium 0 13 -100.0%

2.32

Documenting Nine 

Minimum Control 

Measures - O&M POTWs - Large 0 27 -100.0%

2.33

Documenting Nine 

Minimum Control 

Measures - Max. Storage 

of System POTWs - Small 0 35 -100.0%
Reference 

Code

Activity Description Respondent Type Total 

Hours / 

Year

(Renewal)

Total 

Hours / 

Year 

(OMB)

% 

Change

Reason for Change

2.34

Documenting Nine 

Minimum Control 

Measures - Max. Storage 

of System POTWs - Medium 0 27 -100.0%

2.35

Documenting Nine 

Minimum Control 

Measures - Max. Storage 

of System POTWs - Large 0 53 -100.0%

2.36

Documenting Nine 

Minimum Control 

Measures - Pretreatment POTWs - Small 0 17 -100.0%

2.37

Documenting Nine 

Minimum Control 

Measures - Pretreatment POTWs - Medium 0 13 -100.0%

2.38

Documenting Nine 

Minimum Control 

Measures - Pretreatment POTWs - Large 0 27 -100.0%

2.39

Documenting Nine 

Minimum Control 

Measures - Max. Flow POTWs - Small 0 35 -100.0%

2.40

Documenting Nine 

Minimum Control 

Measures - Max. Flow POTWs - Medium 0 27 -100.0%

2.41

Documenting Nine 

Minimum Control 

Measures - Max. Flow POTWs - Large 0 53 -100.0%

2.42

Documenting Nine 

Minimum Control 

Measures - Dry-weather 

Overflows POTWs - Small 0 78 -100.0%
Reference 

Code

Activity Description Respondent Type Total 

Hours / 

Year

(Renewal)

Total 

Hours / 

Year 

(OMB)

% 

Change

Reason for Change

2.43

Documenting Nine 

Minimum Control 

Measures - Dry-weather 

Overflows POTWs - Medium 0 13 -100.0%

2.44

Documenting Nine 

Minimum Control 

Measures - Dry-weather 

Overflows POTWs - Large 0 27 -100.0%

2.45

Documenting Nine 

Minimum Control 

Measures - Control Solids POTWs - Small 0 17 -100.0%

2.46

Documenting Nine 

Minimum Control 

Measures - Control Solids POTWs - Medium 0 13 -100.0%

2.47

Documenting Nine 

Minimum Control 

Measures - Control Solids POTWs - Large 0 27 -100.0%

2.48

Documenting Nine 

Minimum Control 

Measures - Pollution 

Prevention POTWs - Small 0 17 -100.0%

2.49

Documenting Nine 

Minimum Control 

Measures - Pollution 

Prevention POTWs - Medium 0 13 -100.0%

2.50

Documenting Nine 

Minimum Control 

Measures - Pollution 

Prevention POTWs - Large 0 27 -100.0%
Reference 

Code

Activity Description Respondent Type Total 

Hours / 

Year

(Renewal)

Total 

Hours / 

Year 

(OMB)

% 

Change

Reason for Change

2.51

Documenting Nine 

Minimum Control 

Measures - Public 

Notification POTWs - Small 0 17 -100.0%

2.52

Documenting Nine 

Minimum Control 

Measures - Public 

Notification POTWs - Medium 0 13 -100.0%

2.53

Documenting Nine 

Minimum Control 

Measures - Public 

Notification POTWs - Large 0 27 -100.0%

2.54

Documenting Nine 

Minimum Control 

Measures - Monitor POTWs - Small 0 69 -100.0%

2.55

Documenting Nine 

Minimum Control 

Measures - Monitor POTWs - Medium 0 27 -100.0%

2.56

Documenting Nine 

Minimum Control 

Measures - Monitor POTWs - Large 0 27 -100.0%

2.57

Documenting Nine 

Minimum Control 

Measures - General 

Reporting POTWs - Small 0 35 -100.0%

2.58

Documenting Nine 

Minimum Control 

Measures - General 

Reporting POTWs - Medium 0 27 -100.0%
Reference 

Code

Activity Description Respondent Type Total 

Hours / 

Year

(Renewal)

Total 

Hours / 

Year 

(OMB)

% 

Change

Reason for Change

2.59

Documenting Nine 

Minimum Control 

Measures - General 

Reporting POTWs - Large 0 53 -100.0%

2.60

Documenting Nine 

Minimum Control 

Measures -

Recordkeeping POTWs - Small 0 35 -100.0%

2.61

Documenting Nine 

Minimum Control 

Measures -

Recordkeeping POTWs - Medium 0 27 -100.0%

2.62

Documenting Nine 

Minimum Control 

Measures -

Recordkeeping POTWs - Large 0 53 -100.0%

2.63

Review NMC 

Documentation NPDES States 0 267 -100.0%

5.58

CSO State Oversight -

Recordkeeping NPDES States 0 7 -100.0%