Appendix 3

Construction Inspection Analysis
0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1–2.99 1.9 124 147 632 571 1,111 926 283 293 222 450 98 57 4,914

3–4.99 3.8 68 100 351 341 703 657 312 213 249 397 125 177 3,693

5–7.49 6 44 28 242 168 444 301 81 110 169 220 76 109 1,9927.5–9.99 8.5 22 26 187 172 318 309 52 70 109 180 68 167 1,680

10–14.99 12 23 14 195 218 506 388 139 78 72 430 75 283 2,42115–19.99 17 18 2 84 174 209 219 95 107 74 360 77 137 1,55620–29.99 23 1 28 107 133 239 303 73 90 103 325 101 307 1,81030–39.99 34 1 48 59 182 143 23 42 18 214 69 185 98440–59.99 46 11 33 84 126 114 11 24 70 155 101 192 92160–79.99 69 1 38 38 54 17 19 18 60 11 117 373

80–99.99 85 2 17 36 7 7 43 27 103 242100 < 145 8 11 45 50 15 12 37 50 39 77 344

Total Total Residentia 312 345 1,888 1,971 3,938 3,500 1,101 1,065 1,148 2,884 867 1,911 20,930

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1–2.99 1.9 558 1,359 4,910 5,334 4,806 3,276 940 685 442 592 180 155 23,237

3–4.99 3.8 219 547 1,990 2,973 2,643 1,715 910 461 199 465 140 148 12,410

5–7.49 6 150 206 996 1,368 1,516 1,059 513 285 240 188 89 99 6,709

7.5–9.99 8.5 55 97 578 736 616 617 165 152 144 274 49 96 3,579

10–14.99 12 77 73 493 660 950 741 347 178 162 291 41 71 4,084

15–19.99 17 13 82 246 261 505 419 203 60 114 131 29 39 2,10220–29.99 23 38 59 166 264 542 250 215 208 135 142 25 34 2,07830–39.99 34 3 27 78 164 176 126 48 72 29 101 5 36 86540–59.99 46 17 49 65 129 150 57 152 12 131 51 34 84760–79.99 69 2 2 29 50 33 30 30 87 16 71 2 14 36680–99.99 85 10 1 86 22 11 21 51 11 213

100 < 145 8 25 46 124 25 10 11 5 58 29 15 356

Total Total Nonreside 1,115 2,477 9,570 11,922 12,126 8,430 3,449 2,372 1,498 2,495 640 752 56,846

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1–2.99 1.9 82 210 629 418 308 323 136 55 132 117 7 2,417

3–4.99 3.8 25 87 277 255 246 146 81 60 34 58 22 7 1,298

5–7.49 6 16 23 184 138 170 53 45 26 78 15 22 770

7.5–9.99 8.5 7 15 70 73 78 78 33 89 17 7 21 6 49410–14.99 12 8 21 70 109 39 95 52 43 17 36 13 45 548

15–19.99 17 3 63 49 13 15 21 2 8 64 6 28 27220–29.99 23 5 2 31 36 6 76 40 27 14 95 16 15 36330–39.99 34 1 26 17 6 16 4 9 5 42 2 128

40–59.99 46 1 2 19 9 25 21 15 9 24 4 51 18060–79.99 69 3 9 10 4 5 21 52

80–99.99 85 7 3 2 4 12 28 56

100 < 145 1 3 4 1 9 11 24 35 30 118

Total Total Transporta 143 362 1,334 1,124 892 833 456 334 253 517 214 234 6,696

Table 1. Distribution of Model Projects for each Model Project Size and Duration Category for three Project Types (Residential Construction, Nonresidential Construction, and

Transportation). [Construction ELG Technical Development Document]

Duration (days)

Total by site

size

Size

category

(acres)

Median size

(acres)

RESIDENTIAL

Size

category

(acres)

Median size

(acres)

Duration (days)

Total by site

size

NONRESIDENTIAL

TRANSPORTATION

Size

category

(acres)

Median size

(acres)

Duration (days)

Total by site

size
0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–

1–2.99 1.9 764 1,716 6,171 6,323 6,225 4,525 1,359 1,033 796 1,159 

3–4.99 3.8 312 734 2,618 3,569 3,592 2,518 1,303 734 482 920 

5–7.49 6 210 257 1,422 1,674 2,130 1,413 639 421 409 486 

7.5–9.99 8.5 84 138 835 981 1,012 1,004 250 311 270 461 

10–14.99 12 108 108 758 987 1,495 1,224 538 299 251 757 

15–19.99 17 31 87 393 484 727 653 319 169 196 555 

20–29.99 23 44 89 304 433 787 629 328 325 252 562 

30–39.99 34 4 27 127 249 375 275 87 118 56 320 

40–59.99 46 11 18 84 168 264 289 89 191 91 310 

60–79.99 69 2 2 30 88 74 93 57 110 34 136 

80–99.99 85   ‐                ‐ 17 3 103 61 11 28 9 98 

100 < 145 ‐ 8 33 58 172 79 26 32 53 132 

Total Total 1,570 3,184 12,792 15,017 16,956 12,763 5,006 3,771 2,899 5,896 

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–

1‐4.99 1,076 2,450 8,789 9,892 9,817 7,043 2,662 1,767 1,278 2,079 

5‐39.99 481 706 3,839 4,808 6,526 5,198 2,161 1,643 1,434 3,141 

40‐99.99 13 20 131 259 441 443 157 329 134 544 

100 > ‐ 8 33 58 172 79 26 32 53 132 

Total Total 1,570 3,184 12,792 15,017 16,956 12,763 5,006 3,771 2,899 5,896 

Table 2. Model Project Size and Duration Category for Three Project Types (Residential Construction, Nonresidential Construction, and Transportation) 15 acres and 

Technical Development Document]

Total (these are annual active projects)

Size

category

(acres)

Median

size (acres)

Duration (days)

Total (these are annual active projects)

Size

category

(acres)

Median

size (acres)

Duration (days)
1992 Urban acres 2001 Urban acres % of state that is developed (1992) % of state that is developed (2001)

Annual rate of developm

(acres)

Alabama 2,066,843 2,197,496 6.40% 6.80% 

Alaska NODATAArizona 1,285,258 1,408,765 1.80% 1.97% Arkansas 1,836,496 1,912,492 5.50% 5.73% California 6,278,143 6,524,815 6.20% 6.44% 

Colorado 1,609,387 1,751,902 2.40% 2.61% Connecticut 727,078 736,015 23.40% 23.69% 

Delaware 113,052 120,720 9.40% 10.04% 

Florida 4,526,626 4,870,084 13.00% 13.99% Georgia 3,026,921 3,319,772 8.20% 8.99% 

Hawaii NODATA

Idaho 847,520 898,118 1.60% 1.70% 

Illinois 4,014,480 4,197,711 11.30% 11.82% Indiana 2,238,170 2,353,388 9.90% 10.41% Iowa 2,527,225 2,621,239 7.10% 7.36% Kansas 2,463,194 2,666,459 4.70% 5.09% Kentucky 1,740,669 1,830,327 6.80% 7.15% Louisiana 1,788,423 1,903,893 6.60% 7.03% Maine 653,697 695,682 3.30% 3.51% 

Maryland 698,386 754,384 11.30% 12.21% 

Massachusetts 1,174,234 1,203,889 23.90% 24.50% Michigan 3,746,569 3,946,405 10.30% 10.85% Minnesota 2,648,001 2,731,809 5.20% 5.36% Mississippi 1,721,138 1,827,869 5.70% 6.05% 

Missouri 2,845,661 2,967,035 6.50% 6.78% Montana 1,187,901 1,246,068 1.30% 1.36% Nebraska 1,699,570 1,752,634 3.50% 3.61% Nevada 572,706 646,794 0.80% 0.90% 

New Hampshire 426,786 443,382 7.50% 7.79% 

New Jersey 1,124,705 1,162,613 23.70% 24.50% New Mexico 799,207 838,609 1.00% 1.05% 

New York 2,682,301 2,752,573 8.90% 9.13% North Carolina 2,816,229 2,984,988 9.10% 9.65% 

North Dakota 1,667,029 1,727,113 3.90% 4.04% 

Ohio 3,549,025 3,705,445 13.60% 14.20% 

Oklahoma 2,387,508 2,537,439 5.40% 5.74% Oregon 1,552,824 1,617,957 2.50% 2.60% Pennsylvania 3,006,384 3,149,538 10.40% 10.90% Rhode Island 173,764 177,085 27.00% 27.52% South Carolina 1,487,194 1,632,427 7.70% 8.45% 

South Dakota 1,315,111 1,388,776 2.70% 2.85% Tennessee 2,189,700 2,307,879 8.30% 8.75% 

Texas 8,229,892 8,791,816 5.00% 5.34% Utah 758,031 831,309 1.40% 1.54% 

Vermont 304,570 309,628 5.40% 5.49% 

Virginia 1,818,500 1,954,409 7.20% 7.74% Washington 2,286,574 2,402,332 5.40% 5.67% West Virginia 1,016,805 1,049,133 6.70% 6.91% 

Wisconsin 2,345,956 2,411,998 6.70% 6.89% 

Wyoming 491,168 516,818 0.80% 0.84% 

District of Columbia 26,381 28,865 82.80% 90.60% Nation 96,492,992 101,807,897 

Table 3. State and National Estimates for Rate of Development in Urban Areas (NLCD)
2010 Population

Guam: 181,000                    

American Samoa 66,000                      

Puerto Rico 3,979,000                 

                4,226,000 1.36%

US 2010 Projection 310,233,000            

All from US Census Data

Table 4. Population Analysis for GU, AS and PR
Events that produce discharge

NH

6‐hr Recession Limb, HSG B soil runoff

Threshold (Inches) 0.1 0.25 0.5 1 1.5 0.1 0.25 0.5 1 1.5

28 24 14 7 4 26 24 14 7 431 25 17 9 4 29 25 17 9 435 23 12 5 2 30 23 12 5 241 26 15 9 4 33 26 15 9 430 23 17 8 3 26 23 17 8 3

24.2 15 24.2 15

Events that produce RUNOFF

ID

6‐hr Recession Limb, HSGWork Week Only

Threshold (Inches) 0.1 0.25 0.5 1 1.5 0.1 0.25 0.5 1 1.5

15 8 2 0 0 11 8 2 0 014 8 3 1 1 9 8 3 1 120 5 2 1 0 11 5 2 1 014 5 2 0 0 6 4 1 0 016 8 0 0 0 13 8 0 0 0

6.8 1.8 6.6 1.6

Events that produce RUNOFF

NM

6‐hr Recession Limb, HSG B soil runoff

Threshold (Inches) 0.1 0.25 0.5 1 1.5 0.1 0.25 0.5 1 1.5

14 8 5 2 2 12 8 5 2 214 10 6 2 0 12 10 6 2 019 12 4 1 0 13 12 4 1 013 10 4 1 0 13 10 4 1 011 7 2 2 0 11 7 2 2 0

9.4 4.2 9.4 4.2

Workweek only, Precip Above Threshold, all events except

during snow months

Precip Above Threshold, only work-week events except

during snow months

Table 5. Number of Precipitation Events based on Threshhold levels for NH, ID and NM

Precip Above Threshold, only work-week events except

during snow months

Workweek only, Precip Above Threshold, all events except

during snow months

Workweek only, Precip Above Threshold, all events except

during snow months

Precip Above Threshold, only work-week events exceptduring snow months
Exhibit 1. Summary of Inspection Burden and Costs for Construction Projects in Idaho

State: ID

Hours/Inspection

Add.Time/outfall

% Sites in State 1.0% Small 0.25 0.25

Rain Events per Month (.25) 0.57 Large 0.50 0.25

Rain Events per Month (.5) 0.15

Labor Cost (site) $30

Labor Cost (EPA) $39

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 10 23 84 94 93 67 25 17 12 20 5 5 457

5‐39.99 5 7 37 46 62 49 21 16 14 30 8 16 309

40‐99.99 0 0 1 2 4 4 1 3 1 5 2 5 31

100 > ‐ 0 0 1 2 1 0 0 1 1 1 1 8

Total Total 15 30 122 143 161 122 48 36 28 56 16 28 804

Midpoint Years (from econ analysis) 0.1 0.2 0.3 0.6 0.8 1.1 1.3 1.6 1.8 2.3 2.7 3

Number of Months of Activity 1.2 2.4 3.6 7.2 9.6 13.2 15.6 19.2 21.6 27.6 32.4 36

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 12 56 301 678 897 67 25 17 12 20 5 5 2,097

5‐39.99 5 16 132 330 596 49 21 16 14 30 8 16 1,232

40‐99.99 0 0 4 18 40 4 1 3 1 5 2 5 86

100 > ‐ 0 1 4 16 1 0 0 1 1 1 1 26

Total Total 18 73 438 1,029 1,550 122 48 36 28 56 16 28 3,441

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 7 32 171 384 508 38 14 10 7 11 3 3                  ‐ 1,188 

5‐39.99 3 9 75 187 338 28 12 9 8 17 4 9                     ‐ 698 

40‐99.99 0 0 3 10 23 2 1 2 1 3 1 3                       ‐ 49 

100 > ‐ 0 1 2 9 0 0 0 0 1 1 1                       ‐ 15 

Total Total 10 41 248 583 878 69 27 20 16 32 9 16                  ‐ 1,950 

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 7 32 171 384 508 38 14 10 7 11 3 3 1,188 1,188 

5‐39.99 3 9 75 187 338 28 12 9 8 17 4 9 698 698 

40‐99.99 0 0 3 10 23 2 1 2 1 3 1 3 49 97 

100 > ‐ 0 1 2 9 0 0 0 0 1 1 1 15 45 

Total Total 10 41 248 583 878 69 27 20 16 32 9 16 1,950 2,028 

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 2 8 45 102 135 10 4 3 2 3 1 1                     ‐ 314 

5‐39.99 1 2 20 49 89 7 3 2 2 4 1 2                     ‐ 185 

40‐99.99 0 0 1 3 6 1 0 0 0 1 0 1                       ‐ 13 

100 > ‐ 0 0 1 2 0 0 0 0 0 0 0                          ‐ 4 

Total Total 3 11 66 154 232 18 7 5 4 8 2 4                     ‐ 516 

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 2 8 45 102 135 10 4 3 2 3 1 1 314 314 

5‐39.99 1 2 20 49 89 7 3 2 2 4 1 2 185 185 

40‐99.99 0 0 1 3 6 1 0 0 0 1 0 1 13 26 

100 > ‐ 0 0 1 2 0 0 0 0 0 0 0 4 12 

Total Total 3 11 66 154 232 18 7 5 4 8 2 4 516 537 

Summary of Inspection Burden and Cost (construction sites/0.25 threshold baseline)

Size category (acres)

Total Events

Inspected by

site size

Total Outfall

Inspections

by site size

Total Burden

by site size

Total Burden

Cost by site

size

1‐4.99 1,188                   ‐ 297 $ 8,910

5 > 762                      ‐ 381 $ 11,427

Total                   ‐ 1,950 678 $ 20,337

Size category (acres)

Duration (days) Total Events

Inspected by

site size

Total (these are annual active projects)

Size category (acres)

Duration (days) Total by site

size

Number of Months of Activity‐Project

Size category (acres)

Duration (days) Total by site

size

Inspection Events Baseline (.25)

Inspection Events (.5)

Size category (acres)

Duration (days) Total Events

Inspected by

site size

Total Outfall

Inspections by site

size

Tot

Total Outfall

Inspections by site

size

Tot

Total Outfall

Inspections by site

size

Tot

Inspection Events (.25)

Size category (acres)

Duration (days) Total Events

Inspected by

site size

Total Outfall

Inspections by site

size

Tot

Inspection Events (.5)

Size category (acres)

Duration (days) Total Events

Inspected by

site size
Summary of Inspection Burden and Cost (construction sites/0.25 threshold with additional burden)

Size category (acres)

Total Events

Inspected by

site size

Total Outfall

Inspections

by site size

Total Burden

by site size

Total Burden

Cost by site

size

1‐4.99 1,188 1,188 594 $ 17,820

5 > 762 840 591 $ 17,728

Total 1,950 2,028 1,185 $ 35,548

Summary of Inspection Burden and Cost (construction sites/0.5 threshold)

Size category (acres)

Total Events

Inspected by

site size

Total Outfall

Inspections

by site size

Total Burden

by site size

Total Burden

Cost by site

size

1‐4.99 314                      ‐ 79 $ 2,359

5 > 202                      ‐ 101 $ 3,025

Total                      ‐ 516 179 $ 5,383

Summary of Inspection Burden and Cost (construction sites/0.5 threshold)

Size category (acres)

Total Events

Inspected by

site size

Total Outfall

Inspections

by site size

Total Burden

by site size

Total Burden

Cost by site

size

1‐4.99 314 314 157 $ 4,717

5 > 202 222 156 $ 4,693

Total 516 537 314 $ 9,410

Summary (construction sites/0.25 threshold)

Respondents Responses

Burden(hours) Burden Cost

804 1,950 678 $ 20,337

Summary (construction sites/0.25 threshold with additional burden)

Respondents Responses

Burden(hours) Burden Cost

804 1,950 1,185 $ 35,548

Summary (construction sites/0.5 threshold)

Respondents Responses

Burden(hours) Burden Cost

804 516 179 $ 5,383

Summary (construction sites/0.5 threshold with additional burden)

Respondents Responses

Burden(hours) Burden Cost

804 516 314 $ 9,410
Exhibit 2. Summary of Inspection Burden and Costs for Construction Projects in Massachusetts

State: MA

Hours/Inspection

Add.Time/Discharge Total

% Sites in State 0.6% Small 0.25 0.25 0.50

Rain Events per Month (.25) 2.02 Large 0.50 0.25 0.75

Rain Events per Month (.5) 1.25

Labor Cost (site) $30Labor Cost (EPA) $39

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 6 14 49 55 55 39 15 10 7 12 3 3 268

5‐39.99 3 4 21 27 36 29 12 9 8 18 5 9 181

40‐99.99 0 0 1 1 2 2 1 2 1 3 1 3 18

100 > ‐ 0 0 0 1 0 0 0 0 1 1 1 5

Total Total 9 18 71 84 95 71 28 21 16 33 10 16 471

Midpoint Years (from econ analysis) 0.1 0.2 0.3 0.6 0.8 1.1 1.3 1.6 1.8 2.3 2.7 3Number of Months of Activity 1.2 2.4 3.6 7.2 9.6 13.2 15.6 19.2 21.6 27.6 32.4 36

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 7 33 177 397 526 39 15 10 7 12 3 3 1,229

5‐39.99 3 9 77 193 350 29 12 9 8 18 5 9 722

40‐99.99 0 0 3 10 24 2 1 2 1 3 1 3 50

100 > ‐ 0 1 2 9 0 0 0 0 1 1 1 15

Total Total 11 43 257 603 908 71 28 21 16 33 10 16 2,017

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 15 66 356 801 1,060 79 30 20 14 23 6 6              ‐ 2,478 619 $ 5‐39.99 6 19 156 390 705 58 24 18 16 35 9 19              ‐ 1,456 728 $ 

40‐99.99 0 1 5 21 48 5 2 4 2 6 3 6                 ‐ 101 51 $ 

100 > ‐ 0 1 5 19 1 0 0 1 1 1 1                    ‐ 31 15 $ 

Total Total 21 86 518 1,217 1,832 144 56 42 33 66 19 33              ‐ 4,067 1,414 $ 

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 15 66 356 801 1,060 79 30 20 14 23 6 6 2,478 2,478 1,238.99 $ 

5‐39.99 6 19 156 390 705 58 24 18 16 35 9 19 1,456 1,456 1,092 $ 

40‐99.99 0 1 5 21 48 5 2 4 2 6 3 6 101 203 101 $ 

100 > ‐ 0 1 5 19 1 0 0 1 1 1 1 31 93 39 $ 

Total Total 21 86 518 1,217 1,832 144 56 42 33 66 19 33 4,067 4,230 2,472 $ 

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 9 41 221 497 657 49 19 12 9 14 4 4              ‐ 1,536 384 $ 

5‐39.99 4 12 96 241 437 36 15 11 10 22 6 12                 ‐ 903 451 $ 

40‐99.99 0 0 3 13 30 3 1 2 1 4 2 4                    ‐ 63 31 $ 

100 > ‐ 0 1 3 12 1 0 0 0 1 1 1                    ‐ 19 10 $ 

Total Total 13 53 321 754 1,135 89 35 26 20 41 12 20              ‐ 2,521 876 $ 

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 9 41 221 497 657 49 19 12 9 14 4 4 1,536 1,536 768 $ 

5‐39.99 4 12 96 241 437 36 15 11 10 22 6 12 903 903 677 $ 

40‐99.99 0 0 3 13 30 3 1 2 1 4 2 4 63 126 63 $ 

100 > ‐ 0 1 3 12 1 0 0 0 1 1 1 19 58 24 $ 

Total Total 13 53 321 754 1,135 89 35 26 20 41 12 20 2,521 2,622 1,532 $ 

Total (these are annual active projects)

Size category (acres)

Duration (days)

Total by site

size

Inspection Events Baseline (.25)

Size category (acres)

Duration (days)

Total Events

Inspected by

site size

Number of Months of Activity‐Project

Size category (acres)

Duration (days)

Total by site

size

T

Co

Inspection Events (.25)

Size category (acres)

Duration (days) Total Events

Inspected by

site size

Total Outfall

Inspections by site

size

Total Burden by

site size

T

Co

Total Outfall

Inspections by site

size

Total Burden by

site size

Inspection Events (.5)

Size category (acres)

Duration (days) Total Events

Inspected by

site size

Total Outfall

Inspections by site

size

Total Burden by

site size

T

Co

Inspection Events (.5)

Size category (acres)

Duration (days) Total Events

Inspected by

site size

Total Outfall

Inspections by site

size

Total Burden by

site size

T

Co
Summary of Inspection Burden and Cost (construction sites/0.25 threshold baseline)

Size category (acres)

Total Events

Inspected by

site size

Total Outfall

Inspections by

site size

Total Burden

by site size

Total Burden

Cost by site size

1‐4.99 2,478                ‐ 619 $ 18,585

5 > 1,589                ‐ 794 $ 23,833

Total                ‐ 4,067 1,414 $ 42,418

Summary of Inspection Burden and Cost (construction sites/0.25 threshold with additional burden)

Size category (acres)

Total Events

Inspected by

site size

Total Outfall

Inspections by

site size

Total Burden

by site size

Total Burden

Cost by site size

1‐4.99 2,478 2,478 1,239 $ 37,170

5 > 1,589 1,752 1,233 $ 36,976

Total 4,067 4,230 2,472 $ 74,146

Summary of Inspection Burden and Cost (construction sites/0.5 threshold)

Size category (acres)

Total Events

Inspected by

site size

Total Outfall

Inspections by

site size

Total Burden

by site size

Total Burden

Cost by site size

1‐4.99 1,536                ‐ 384 $ 11,520

5 > 985                   ‐ 492 $ 14,773

Total                ‐ 2,521 876 $ 26,292

Summary of Inspection Burden and Cost (construction sites/0.5 threshold)

Size category (acres)

Total Events

Inspected by

site size

Total Outfall

Inspections by

site size

Total Burden

by site size

Total Burden

Cost by site size

1‐4.99 1,536 1,536 768 $ 23,039

5 > 985 1,086 764 $ 22,919

Total 2,521 2,622 1,532 $ 45,958

Summary (construction sites/0.25 threshold)

Respondents Responses

Burden(hours) Burden Cost

471 4,067 1,414 $ 42,418

Summary (construction sites/0.25 threshold with additional burden)

Respondents Responses

Burden(hours) Burden Cost

471 4,067 2,472 $ 74,146

Summary (construction sites/0.5 threshold)

Respondents Responses

Burden(hours) Burden Cost

471 2,521 876 $ 26,292

Summary (construction sites/0.5 threshold with additional burden)

Respondents Responses

Burden(hours) Burden Cost

471 2,521 1,532 $ 45,958
Exhibit 3. Summary of Inspection Burden and Costs for Construction Projects in New Hampshire

State: NH

Hours/Inspection

Add.Time/Discharge Total

% Sites in State 0.3% Small 0.25 0.25 0.50

Rain Events per Month (.25) 2.02 Large 0.50 0.25 0.75

Rain Events per Month (.5) 1.25

Labor Cost (site) $30Labor Cost (EPA) $39

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 3 8 27 31 31 22 8 6 4 6 2 2 150

5‐39.99 2 2 12 15 20 16 7 5 4 10 3 5 101

40‐99.99 0 0 0 1 1 1 0 1 0 2 1 2 10

100 > ‐ 0 0 0 1 0 0 0 0 0 0 0 3

Total Total 5 10 40 47 53 40 16 12 9 18 5 9 264

Midpoint Years (from econ analysis) 0.1 0.2 0.3 0.6 0.8 1.1 1.3 1.6 1.8 2.3 2.7 3Number of Months of Activity 1.2 2.4 3.6 7.2 9.6 13.2 15.6 19.2 21.6 27.6 32.4 36

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 4 18 99 222 294 22 8 6 4 6 2 2 688

5‐39.99 2 5 43 108 196 16 7 5 4 10 3 5 404

40‐99.99 0 0 1 6 13 1 0 1 0 2 1 2 28

100 > ‐ 0 0 1 5 0 0 0 0 0 0 0 9

Total Total 6 24 144 338 508 40 16 12 9 18 5 9 1,129

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 8 37 199 448 593 44 17 11 8 13 4 3               ‐ 1,387 347 

5‐39.99 4 11 87 218 395 33 14 10 9 20 5 11                  ‐ 815 408 

40‐99.99 0 0 3 12 27 3 1 2 1 3 1 3                    ‐ 57 28 

100 > ‐ 0 1 3 10 0 0 0 0 1 1 1                    ‐ 17 9 

Total Total 12 48 290 681 1,025 80 32 24 18 37 11 18               ‐ 2,276 791 

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 8 37 199 448 593 44 17 11 8 13 4 3 1,387 1,387 693.38 5‐39.99 4 11 87 218 395 33 14 10 9 20 5 11 815 815 611 

40‐99.99 0 0 3 12 27 3 1 2 1 3 1 3 57 114 57 

100 > ‐ 0 1 3 10 0 0 0 0 1 1 1 17 52 22 

Total Total 12 48 290 681 1,025 80 32 24 18 37 11 18 2,276 2,367 1,383 

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 5 23 123 278 368 27 10 7 5 8 2 2                  ‐ 860 215 

5‐39.99 2 7 54 135 245 20 8 6 6 12 3 7                  ‐ 505 253 

40‐99.99 0 0 2 7 17 2 1 1 1 2 1 2                    ‐ 35 18 

100 > ‐ 0 0 2 6 0 0 0 0 1 0 0                    ‐ 11 5 

Total Total 7 30 180 422 635 50 20 15 11 23 7 11               ‐ 1,411 490 

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 5 23 123 278 368 27 10 7 5 8 2 2 860 860 430 

5‐39.99 2 7 54 135 245 20 8 6 6 12 3 7 505 505 379 

40‐99.99 0 0 2 7 17 2 1 1 1 2 1 2 35 70 35 

100 > ‐ 0 0 2 6 0 0 0 0 1 0 0 11 32 13 

Total Total 7 30 180 422 635 50 20 15 11 23 7 11 1,411 1,467 857 

Total (these are annual active projects)

Size category (acres)

Duration (days)

Total by site size

Inspection Events Baseline (.25)

Size category (acres)

Duration (days)

Total Events

Inspected by site

size

Number of Months of Activity‐Project

Size category (acres)

Duration (days)

Total by site size

Inspection Events (.25)

Size category (acres)

Duration (days) Total Events

Inspected by site

size

Total Outfall

Inspections by site

size

Total Burden by

site size

Total Outfall

Inspections by site

size

Total Burden by

site size

Inspection Events (.5)

Size category (acres)

Duration (days) Total Events

Inspected by site

size

Total Outfall

Inspections by site

size

Total Burden by

site size

Inspection Events (.5)

Size category (acres)

Duration (days) Total Events

Inspected by site

size

Total Outfall

Inspections by site

size

Total Burden by

site size
Summary of Inspection Burden and Cost (construction sites/0.25 threshold baseline)

Size category (acres)

Total Events

Inspected by

site size

Total Outfall

Inspections by

site size

Total Burden

by site size

Total Burden

Cost by site size

1‐4.99 1,387                ‐ 347 $ 10,401

5 > 889                   ‐ 445 $ 13,338

Total                ‐ 2,276 791 $ 23,739

Summary of Inspection Burden and Cost (construction sites/0.25 threshold with additional burden)

Size category (acres)

Total Events

Inspected by

site size

Total Outfall

Inspections by

site size

Total Burden

by site size

Total Burden

Cost by site size

1‐4.99 1,387 1,387 693 $ 20,801

5 > 889 981 690 $ 20,693

Total 2,276 2,367 1,383 $ 41,495

Summary of Inspection Burden and Cost (construction sites/0.5 threshold)

Size category (acres)

Total Events

Inspected by

site size

Total Outfall

Inspections by

site size

Total Burden

by site size

Total Burden

Cost by site size

1‐4.99 860                   ‐ 215 $ 6,447

5 > 551                   ‐ 276 $ 8,267

Total                ‐ 1,411 490 $ 14,714

Summary of Inspection Burden and Cost (construction sites/0.5 threshold)

Size category (acres)

Total Events

Inspected by

site size

Total Outfall

Inspections by

site size

Total Burden

by site size

Total Burden

Cost by site size

1‐4.99 860 860 430 $ 12,893

5 > 551 608 428 $ 12,826

Total 1,411 1,467 857 $ 25,720

Summary (construction sites/0.25 threshold)

Respondents Responses

Burden(hours) Burden Cost

264 2,276 791 $ 23,739

Summary (construction sites/0.25 threshold with additional burden)

Respondents Responses

Burden(hours) Burden Cost

264 2,276 1,383 $ 41,495

Summary (construction sites/0.5 threshold)

Respondents Responses

Burden(hours) Burden Cost

264 1,411 490 $ 14,714

Summary (construction sites/0.5 threshold with additional burden)

Respondents Responses

Burden(hours) Burden Cost

264 1,411 857 $ 25,720
Exhibit 4. Summary of Inspection Burden and Costs for Construction Projects in New Mexico

State: NM

Hours/Inspection

Add.Time/Discharge Total

% Sites in State 0.7% Small 0.25 0.25 0.50 Assumed all events caused a discharge

Rain Events per Month (.25) 0.78 Large 0.50 0.25 0.75

Rain Events per Month (.5) 0.35

Labor Cost (site) $30

Labor Cost (EPA) $39

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 8 18 65 73 73 52 20 13 9 15 4 4 356

5‐39.99 4 5 28 36 48 39 16 12 11 23 6 12 240

40‐99.99 0 0 1 2 3 3 1 2 1 4 2 4 24

100 > ‐ 0 0 0 1 1 0 0 0 1 1 1 6

Total Total 12 24 95 111 126 95 37 28 21 44 13 21 626

Midpoint Years (from econ analysis) 0.1 0.2 0.3 0.6 0.8 1.1 1.3 1.6 1.8 2.3 2.7 3Number of Months of Activity 1.2 2.4 3.6 7.2 9.6 13.2 15.6 19.2 21.6 27.6 32.4 36

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 10 44 235 528 699 52 20 13 9 15 4 4 1,633

5‐39.99 4 13 102 257 464 39 16 12 11 23 6 12 960

40‐99.99 0 0 3 14 31 3 1 2 1 4 2 4 67

100 > ‐ 0 1 3 12 1 0 0 0 1 1 1 20

Total Total 14 57 341 802 1,207 95 37 28 21 44 13 21 2,679

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 7 34 184 414 547 41 15 10 7 12 3 3           ‐ 1,279 320 $ 

5‐39.99 3 10 80 201 364 30 13 10 8 18 5 10              ‐ 752 376 $ 40‐99.99 0 0 3 11 25 3 1 2 1 3 1 3                ‐ 52 26 $ 

100 > ‐ 0 1 2 10 0 0 0 0 1 1 1                ‐ 16 8 $ 

Total Total 11 44 267 628 945 74 29 22 17 34 10 17           ‐ 2,099 730 $ 

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 7 34 184 414 547 41 15 10 7 12 3 3 1,279 1,279 639.44 $ 5‐39.99 3 10 80 201 364 30 13 10 8 18 5 10 752 752 564 $ 

40‐99.99 0 0 3 11 25 3 1 2 1 3 1 3 52 105 52 $ 

100 > ‐ 0 1 2 10 0 0 0 0 1 1 1 16 48 20 $ 

Total Total 11 44 267 628 945 74 29 22 17 34 10 17 2,099 2,183 1,276 $ 

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 3 15 82 185 245 18 7 5 3 5 1 1              ‐ 571 143 $ 

5‐39.99 1 4 36 90 163 13 6 4 4 8 2 4              ‐ 336 168 $ 

40‐99.99 0 0 1 5 11 1 0 1 0 1 1 1                ‐ 23 12 $ 

100 > ‐ 0 0 1 4 0 0 0 0 0 0 0                   ‐ 7 4 $ 

Total Total 5 20 119 281 422 33 13 10 8 15 4 8              ‐ 938 326 $ 

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 3 15 82 185 245 18 7 5 3 5 1 1 571 571 286 $ 

5‐39.99 1 4 36 90 163 13 6 4 4 8 2 4 336 336 252 $ 

40‐99.99 0 0 1 5 11 1 0 1 0 1 1 1 23 47 23 $ 

100 > ‐ 0 0 1 4 0 0 0 0 0 0 0 7 21 9 $ 

Total Total 5 20 119 281 422 33 13 10 8 15 4 8 938 976 570 $ 

Total (these are annual active projects)

Size category (acres)

Duration (days)

Total by site

size

Inspection Events Baseline (.25)

Size category (acres)

Duration (days)

Total Events

Inspected by

site size

Number of Months of Activity‐Project

Size category (acres)

Duration (days)

Total by site

size

Total 

Cost by 

Inspection Events (.25)

Size category (acres)

Duration (days) Total Events

Inspected by

site size

Total Outfall

Inspections by site

size

Total Burden by

site size

Total 

Cost by 

Total Outfall

Inspections by site

size

Total Burden by

site size

Inspection Events (.5)

Size category (acres)

Duration (days) Total Events

Inspected by

site size

Total Outfall

Inspections by site

size

Total Burden by

site size

Total 

Cost by 

Inspection Events (.5)

Size category (acres)

Duration (days) Total Events

Inspected by

site size

Total Outfall

Inspections by site

size

Total Burden by

site size

Total 

Cost by 
Summary of Inspection Burden and Cost (construction sites/0.25 threshold baseline)

Size category (acres)

Total Events

Inspected by

site size

Total Outfall

Inspections by

site size

Total Burden

by site size

Total Burden

Cost by site size

1‐4.99 1,279                ‐ 320 $ 9,592

5 > 820                   ‐ 410 $ 12,300

Total                ‐ 2,099 730 $ 21,892

Summary of Inspection Burden and Cost (construction sites/0.25 threshold with additional burden)

Size category (acres)

Total Events

Inspected by

site size

Total Outfall

Inspections by

site size

Total Burden

by site size

Total Burden

Cost by site size

1‐4.99 1,279 1,279 639 $ 19,183

5 > 820 904 636 $ 19,083

Total 2,099 2,183 1,276 $ 38,267

Summary of Inspection Burden and Cost (construction sites/0.5 threshold)

Size category (acres)

Total Events

Inspected by

site size

Total Outfall

Inspections by

site size

Total Burden

by site size

Total Burden

Cost by site size

1‐4.99 571                   ‐ 143 $ 4,286

5 > 366                   ‐ 183 $ 5,496

Total                   ‐ 938 326 $ 9,782

Summary of Inspection Burden and Cost (construction sites/0.5 threshold)

Size category (acres)

Total Events

Inspected by

site size

Total Outfall

Inspections by

site size

Total Burden

by site size

Total Burden

Cost by site size

1‐4.99 571 571 286 $ 8,571

5 > 366 404 284 $ 8,527

Total 938 976 570 $ 17,098

Summary (construction sites/0.25 threshold)

Respondents Responses

Burden(hours) Burden Cost

626 2,099 730 $ 21,892

Summary (construction sites/0.25 threshold with additional burden)

Respondents Responses

Burden(hours) Burden Cost

626 2,099 1,276 $ 38,267

Summary (construction sites/0.5 threshold)

Respondents Responses

Burden(hours) Burden Cost

626 938 326 $ 9,782

Summary (construction sites/0.5 threshold with additional burden)

Respondents Responses

Burden(hours) Burden Cost

626 938 570 $ 17,098
Exhibit 5. Summary of Inspection Burden and Costs for Construction Projects in PR, GU, AS

State: Territories (PR, GU, AS)

Hours/Inspection

Add.Time/Discharge Total

% Sites in State NA Small 0.25 0.25 0.50

Rain Events per Month (.25) 2.02 Large 0.50 0.25 0.75

Rain Events per Month (.5) 1.25

Labor Cost (site) $30Labor Cost (EPA) $39

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 2 2 7 9 16 11 8 8 7 14 4 6 94

5‐39.99 0 1 4 7 8 7 6 5 8 16 6 9 78

40‐99.99 ‐ 0 0 1                     ‐ 1 1 1 1 2 1 4 11

100 >                 ‐ ‐                 ‐ 1 1                    ‐ 0 0 0 1 0 2 5

Total Total 3 4 11 18 25 18 15 15 16 32 11 21 188

Midpoint Years (from econ analysis) 0.1 0.2 0.3 0.6 0.8 1.1 1.3 1.6 1.8 2.3 2.7 3Number of Months of Activity 1.2 2.4 3.6 7.2 9.6 13.2 15.6 19.2 21.6 27.6 32.4 36

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 3 6 25 65 150 11 8 8 7 14 4 6 306

5‐39.99 0 2 14 53 73 7 6 5 8 16 6 9 201

40‐99.99 ‐ 0 1 6                     ‐ 8 1 1 1 2 1 4 24

100 >                 ‐ ‐                 ‐ 4 8                    ‐ 0 0 0 1 0 2 15

Total Total 3 9 40 128 238 18 15 15 16 32 11 21 545

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 5 12 51 131 302 22 16 16 14 27 8 13              ‐ 616 154 $ 5‐39.99 1 5 28 107 147 15 13 11 16 32 12 18              ‐ 405 202 $ 

40‐99.99 ‐ 1 1 12                   ‐ 15 2 2 2 3 1 8                ‐ 48 24 $ 

100 >                 ‐ ‐                 ‐ 9 15                    ‐ 0 0 0 1 0 4                ‐ 31 16 $ 

Total Total 6 17 80 258 480 37 30 29 32 64 22 43           ‐ 1,100 396 $ 

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 5 12 51 131 302 22 16 16 14 27 8 13 616 616 308 $ 

5‐39.99 1 5 28 107 147 15 13 11 16 32 12 18 405 405 303 $ 

40‐99.99 ‐ 1 1 12                   ‐ 15 2 2 2 3 1 8 48 96 48 $ 

100 >                 ‐ ‐                 ‐ 9 15                    ‐ 0 0 0 1 0 4 31 93 39 $ 

Total Total 6 17 80 258 480 37 30 29 32 64 22 43 1,100 1,210 698 $ 

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 3 7 32 81 187 14 10 10 9 17 5 8              ‐ 382 95 $ 5‐39.99 1 3 17 67 91 9 8 7 10 20 8 11              ‐ 251 125 $ 

40‐99.99 ‐ 1 1 7                   ‐ 10 1 1 2 2 1 5                ‐ 30 15 $ 

100 >                 ‐ ‐                 ‐ 5 10                    ‐ 0 0 0 1 0 3                ‐ 19 10 $ 

Total Total 4 11 50 160 298 23 19 18 20 40 14 27              ‐ 682 245 $ 

0–46 47–91 92–182 183–274 275–365 366–456 457–547 549–639 640–730 731–912 913–1,095 > 1,096

1‐4.99 3 7 32 81 187 14 10 10 9 17 5 8 382 382 191 $ 

5‐39.99 1 3 17 67 91 9 8 7 10 20 8 11 251 251 188 $ 

40‐99.99 ‐ 1 1 7                   ‐ 10 1 1 2 2 1 5 30 60 30 $ 

100 >                 ‐ ‐                 ‐ 5 10                    ‐ 0 0 0 1 0 3 19 58 24 $ 

Total Total 4 11 50 160 298 23 19 18 20 40 14 27 682 750 433 $ 

Inspection Events Baseline (.25)

Size category (acres)

Duration (days)

Total Events

Inspected by

site size

Number of Months of Activity‐Project

Size category (acres)

Duration (days)

Total by site

size

Total (these are annual active projects)

Size category (acres)

Duration (days)

Total by site

size

Total Samplings

by site size

Total Burden by

site size

Tot

Cost 

Tot

Cost 

Inspection Events Baseline (.5)

Size category (acres)

Duration (days)

Total Events

by site size

Total Samplings

by site size

Total Burden by

site size

Tot

Cost 

Total Outfall

Inspections by site

size

Total Burden by

site size

Inspection Events (.25)

Size category (acres)

Inspection Events (.5)

Size category (acres)

Duration (days)

Total Events

by site size

Tot

Cost 

Duration (days) Total Events

Inspected by

site size

Total Outfall

Inspections by site

size

Total Burden by

site size
Summary of Inspection Burden and Cost (construction sites/0.25 threshold baseline)

Size category (acres)

Total Events

Inspected by

site size

Total Outfall

Inspections by

site size

Total Burden

by site size

Total Burden

Cost by site size

1‐4.99 616                   ‐ 154 $ 4,622

5 > 484                   ‐ 242 $ 7,255

Total                ‐ 1,100 396 $ 11,877

Summary of Inspection Burden and Cost (construction sites/0.25 threshold with additional burden)

Size category (acres)

Total Events

Inspected by

site size

Total Outfall

Inspections by

site size

Total Burden

by site size

Total Burden

Cost by site size

1‐4.99 616 616 308 $ 9,243

5 > 484 594 390 $ 11,709

Total 1,100 1,210 698 $ 20,952

Summary of Inspection Burden and Cost (construction sites/0.5 threshold)

Size category (acres)

Total Events

Inspected by

site size

Total Outfall

Inspections by

site size

Total Burden

by site size

Total Burden

Cost by site size

1‐4.99 382                   ‐ 95 $ 2,8655 > 300                   ‐ 150 $ 4,497

Total                   ‐ 682 245 $ 7,362

Summary of Inspection Burden and Cost (construction sites/0.5 threshold)

Size category (acres)

Total Events

Inspected by

site size

Total Outfall

Inspections by

site size

Total Burden

by site size

Total Burden

Cost by site size

1‐4.99 382 382 191 $ 5,729

5 > 300 692 409 $ 7,258

Total 682 1,074 600 $ 12,987

Summary (construction sites/0.25 threshold)

Respondents Responses

Burden(hours) Burden Cost

188 1,100 396 $ 11,877

Summary (construction sites/0.25 threshold with additional burden)

Respondents Responses

Burden(hours) Burden Cost

188 1,100 698 $ 20,952

Summary (construction sites/0.5 threshold)

Respondents Responses

Burden(hours) Burden Cost

188 682 245 $ 7,362

Summary (construction sites/0.5 threshold with additional burden)

Respondents Responses

Burden(hours) Burden Cost

188 682 600 $ 12,987
Exhibit 6. Summary of Inspection Burden and Costs for States and Terriorities where EPA is the Permitting Authority

Respondents Summary (Construction Sites ‐ 0.25 Threshold Baseline) Cost Increase

BurdeIncrea

AnnualRespondents

AnnualResponses

Annual Burden

(hours)

Annual Burden

Cost Baseline 0.5 to Baseline 0.25 56,730 $ 

2,353 11,491 4,009 $ 120,263

Baseline 0.5 to 0.25 with

Additional Time) 146,874 $ 

Respondents Summary (Construction Sites ‐ 0.25 Threshold)

AnnualRespondents

AnnualResponses

Annual Burden

(hours)

Annual BurdenCost

2,353 11,491 7,014 $ 210,407

Respondents Summary (Construction Sites ‐ 0.5 Threshold Baseline)

AnnualRespondents

AnnualResponses

Annual Burden

(hours)

Annual BurdenCost

2,353 6,067 2,118 $ 63,533

Tables below included for informational purposes only

Respondents Summary (Construction Sites ‐ 0.5 Threshold) Cost Increase

Burde

Increa

AnnualRespondents

AnnualResponses

Annual Burden

(hours)

Annual Burden

Cost

Baseline 0.5 to 0.5 with

Additional Time) 47,640 

2,353 6,067 3,873 $ 111,172