### 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**  **( OM**  **B )**  **%**

**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 W ater 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 num ber 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**  **( OM**  **B )**  **%**

**Change Reason for Change** 

2.83 Development of SWP PP 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 SWP PP Large construction sites (>5 acres) EPA Perm Auth no ESA 41,059 187,314 -78% 2.85 Development of SWP PP Large construction sites (>5 acres) EPA Perm Auth informal ESA 25,516 116,444 -78% 2.86 Development of SWP PP 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% 4.32 0 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**  **( OM**  **B )**  **%**

**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% 4.33 0 Unanticipated Bypass /

Upset Reports (W ritten Reports) Construction Stormwater General Permittees 124 358 -65% 4.331 Unanticipated Bypass /

Upset Report (W ritten 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 (W ritten Reports) Construction Stormwater General Permittees 78 226 -66% 4.336 Maximum Daily Violation

Report (W ritten 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**  **( OM**  **B )**  **%**

**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% Form ula correction from previous ICR. 4.137 Permittee Report of

Inaccurate Previous Information Minor Municipal 378 208 82% Form ula correction from previous ICR. 4.138 Permittee Report of

Inaccurate Previous Information NPDES States, Minor Municipal 744 408 82% 6.2 0 Inspection & Investigation

of NPDES permittees - PCI NPDES States 0 21,408 - 100% T his 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-ye ars 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 s ystem; 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**  **( OM**  **B )**  **%**

**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 errors in ICIS. 4.16 Permittee Report of

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 mu ltiple 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 num ber 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% 4.11 0 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, Bim onthly 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, Bim onthly Reporting 5,630 1,232 357% 4.147 DMR Reporting Minor Municipal Dischargers, Bim onthly 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**  **( OM**  **B )**  **%**

**Change Reason for Change** 

3.3 DMR Sampling Minor Nonmunicipal Dischargers, Bim onthly 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, Bim onthly Reporting 20,938 10,381 102% 4.25 DMR Reporting Minor Nonmunicipal Dischargers, Bim onthly Reporting 4,284 2,124 102% 4.26 DMR Administration NPDES States, Minor Nonmunicipal Dischargers, Bim onthly Reporting 562 278 102% 3.81 DMR Sampling General Non -stormwater Permittees (State) - Semi Annually 977 0 N/A Total Number of Non -Stormwater General Permittees decreased by EPA. (Jackie Clark) Additionally, the percent of Non stormwater 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) - Semi Annually 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) - Semi Annually 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**  **( OM**  **B )**  **%**

**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, Non Class 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, Non Class 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% 1.14 0 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**  **( OM**  **B )**  **%**

**Change Reason for Change** 

3.117 Annual Inspections Passenger Vessels 990 2,321 -57% 4.339 One Time Reporting Cruise Ships 2 18 -90% 4.34 0 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 - Sm all 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 - Sm all 0 35 - 100.0%**Reference**

**Code Activity Description**  **Respondent Type Total**  **Hours / Year**  **(Renewal) Total** 

**Hours / Year**  **( OM**  **B )**  **%**

**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 - Sm all 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 - Sm all 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 - Sm all 0 78 - 100.0%**Reference**

**Code Activity Description**  **Respondent Type Total**  **Hours / Year**  **(Renewal) Total** 

**Hours / Year**  **( OM**  **B )**  **%**

**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 - Sm all 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 - Sm all 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**  **( OM**  **B )**  **%**

**Change Reason for Change** 

2.51 Documenting Nine

Minimum Control Measures - Public Notification POTWs - Sm all 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 - Sm all 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 - Sm all 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**  **( OM**  **B )**  **%**

**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 - Sm all 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%