APPENDIX L. Acute and Chronic Risk Quotients Calculated for Aquatic Organisms for Aerial and Ground 

Endosulfans. Table L-1. Acute and Chronic Risk Quotients Calculated for Aquatic Organisms for Aerial and Ground App

Surface Water EECs (ppb) Freshwater Fish 

Estuarine /Marine Fish 

FreshwateInvertebrat

Scenario Crop Represented 

1

Crop 

Application 

Type Peak 21-day 60-day 

Acute RQ2

Chronic RQ3

Acute RQ2

Chronic RQ3

Acute RQ4

CR

Aerial 3.52 1.044 0.629 35.2 27.3 39.1 14.0 5.0 

CA almond 

Almonds, Hazelnuts Walnuts, and Macadamia nuts Ground 2.12 0.842 0.595 21.2 25.9 23.6 13.2 3.0 

Aerial 13.23 5.149 3.591 132.3 156.1 147.0 79.8 18.9 

FL citrs-nb Citrs-nb 

Ground 14.03 5.394 3.724 140.3 161.9 155.9 82.8 20.0 

Aerial 3.35 0.914 0.451 33.5 19.6 37.2 10.0 4.8 

CA citrus Citrs-nb 

Ground 1.44 0.474 0.297 14.4 12.9 16.0 6.6 2.1 

Broccoli, Cabbage, Aerial 4.89 1.796 1.268 48.9 55.1 54.3 28.2 7.0 Cauliflower & Kohlrabi Ground 4.93 1.817 1.226 49.3 53.3 54.8 27.2 7.0 Collards & Mustard Aerial 2.36 0.895 0.63 23.6 27.4 26.2 14.0 3.4 Green Ground 2.39 0.906 0.607 23.9 26.4 26.6 13.5 3.4 

Aerial 1.77 0.67 0.473 17.7 20.6 19.7 10.5 2.5 

FL cabbage 

Kale (other States) Ground 1.8 0.679 0.455 18.0 19.8 20.0 10.1 2.6 

Broccoli, Cabbage Aerial 5.34 2.672 1.805 53.4 78.5 59.3 40.1 7.6 & Cauliflower Ground 4.17 2.139 1.616 41.7 70.3 46.3 35.9 6.0 

Aerial 2.03 0.795 0.513 20.3 22.3 22.6 11.4 2.9 

CA cole crops Collards, Kale & 

Mustard Green Ground 1.31 0.627 0.427 13.1 18.6 14.6 9.5 1.9 

Aerial 3.59 1.601 1.172 35.9 51.0 39.9 26.0 5.1 

FL sweet corn 

Ground 3.67 1.54 1.161 36.7 50.5 40.8 25.8 5.2 

Aerial 2.6 1.215 1.049 26.0 45.6 28.9 23.3 3.7 

OR sweet corn 

Sweet corn for fresh market only 

Ground 2.78 1.349 1.192 27.8 51.8 30.9 26.5 4.0 

Aerial 3.11 1.173 0.8 31.1 34.8 34.6 17.8 4.4 

CA corn Sweet corn for fresh market only Ground 2.95 1.138 0.76 29.5 33.0 32.8 16.9 4.2 

L-1
Surface Water EECs (ppb) Freshwater Fish 

Estuarine /Marine Fish 

FreshwateInvertebrat

Crop 

Application Acute Chronic Acute Chronic Acute C

Crop Represented 

1

Scenario Type Peak 21-day 60-day RQ2 RQ3 RQ2 RQ3 RQ4 R

Aerial 10.31 3.97 2.655 103.1 115.4 114.6 59.0 14.7 

MS cotton 

Ground 13.5 5.282 3.565 135.0 155.0 150.0 79.2 19.3 

Aerial 9.8 4.994 3.261 98.0 141.8 108.9 72.5 14.0 

NC cotton 

Ground 13.5 6.816 4.395 135.0 191.1 150.0 97.7 19.3 

Aerial 11.99 4.398 2.808 119.9 122.1 133.2 62.4 17.1 

S-TX cotton 

Ground 16.52 5.98 3.706 165.2 161.1 183.6 82.4 23.6 

Aerial 10.26 3.783 2.275 102.6 98.9 114.0 50.6 14.7 

TX cotton 

Cotton 

Ground 13.19 5.163 3.073 131.9 133.6 146.6 68.3 18.8 

Aerial 1.58 0.838 0.604 15.8 26.3 17.6 13.4 2.3 

CA cotton Cotton 

Ground 2.25 0.928 0.75 22.5 32.6 25.0 16.7 3.2 

Aerial 6.2 2.803 1.987 62.0 86.4 68.9 44.2 8.9 

GA peaches Ground 5.39 1.803 0.995 53.9 43.3 59.9 22.1 7.7 

Aerial 6.35 2.803 1.987 63.5 86.4 70.6 44.2 9.1 

MI cherries 

Ground 8.14 3.417 2.184 81.4 95.0 90.4 48.5 11.6 

Aerial 4.44 1.829 1.26 44.4 54.8 49.3 28.0 6.3 

NC apples Ground 6.96 2.289 1.399 69.6 60.8 77.3 31.1 9.9 

Aerial 3.84 1.329 0.918 38.4 39.9 42.7 20.4 5.5 

OR apples Ground 2.33 1.035 0.825 23.3 35.9 25.9 18.3 3.3 

Aerial 5.34 2.22 1.368 53.4 59.5 59.3 30.4 7.6 

PA apples Ground 5.46 1.864 1.106 54.6 48.1 60.7 24.6 7.8 

Aerial 3.4 0.956 0.503 34.0 21.9 37.8 11.2 4.9 

WA orchards 

Apple 

Apricot, , Nectarine 

& Peach 

Ground 2.27 0.656 0.374 22.7 16.3 25.2 8.3 3.2 

Aerial 1.48 0.778 0.559 14.8 24.3 16.4 12.4 2.1 

OR apples Ground 1.46 0.646 0.515 14.6 22.4 16.2 11.4 2.1 

Aerial 1.19 0.542 0.297 11.9 12.9 13.2 6.6 1.7 

WA orchards 

Cherry, Pear, Plum & Prune 

Ground 0.7 0.235 0.133 7.0 5.8 7.8 3.0 1.0 

Aerial 3.45 1.03 0.542 34.5 23.6 38.3 12.0 4.9 

CA fruits 

Apple, Apricot, Cherry, Nectarine, Peach, Pear, Plum & Ground 0.82 0.263 0.178 8.2 7.7 9.1 4.0 1.2 

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Surface Water EECs (ppb) Freshwater Fish 

Estuarine /Marine Fish 

FreshwateInvertebrat

Crop 

Application Acute Chronic Acute Chronic Acute C

Crop Represented 

1

Scenario Type Peak 21-day 60-day RQ2 RQ3 RQ2 RQ3 RQ4 R

Prune 

Aerial 6.13 2.666 1.907 61.3 82.9 68.1 42.4 8.8 

CA lettuce Lettuce & Brussels Sprouts Ground 6.36 2.632 1.781 63.6 77.4 70.7 39.6 9.1 

Aerial 5.94 2.527 1.632 59.4 71.0 66.0 36.3 8.5 

FL cucumber 

Ground 5.82 2.116 1.437 58.2 62.5 64.7 31.9 8.3 

Aerial 1.88 0.91 0.641 18.8 27.9 20.9 14.2 2.7 

MI melon 

Ground 1.56 0.639 0.412 15.6 17.9 17.3 9.2 2.2 

Aerial 5.13 2.074 1.533 51.3 66.7 57.0 34.1 7.3 

MO melon 

Ground 5.06 2.027 1.453 50.6 63.2 56.2 32.3 7.2 

Aerial 4.93 1.756 1.217 49.3 52.9 54.8 27.0 7.0 

NJ melon 

Ground 5.03 1.729 1.14 50.3 49.6 55.9 25.3 7.2 

Cucurbits (Cucumber, Melons, Pumpkin & Squash), and Eggplant (Other states)

Aerial 10.31 4.112 2.79 103.1 121.3 114.6 62.0 14.7 

S-TX melon 

Ground 11.1 4.345 2.842 111.0 123.6 123.3 63.2 15.9 

Cucurbits Aerial 1.6 0.833 0.627 16.0 27.3 17.8 13.9 2.3 (Cucumber, Melons, Pumpkin & Squash) Ground 2.81 1.034 0.704 28.1 30.6 31.2 15.6 4.0 

Aerial 0.74 0.242 0.135 7.4 5.9 8.2 3.0 1.1 

CA melon 

Eggplant (CA) Ground 1.29 0.5 0.341 12.9 14.8 14.3 7.6 1.8 

Aerial 10.15 4.49 3.581 101.5 155.7 112.8 79.6 14.5 

FL nursery Ground 10.45 4.536 3.619 104.5 157.3 116.1 80.4 14.9 

Aerial 4.5 2.509 1.853 45.0 80.6 50.0 41.2 6.4 

MI nursery Ground 4.41 2.169 1.583 44.1 68.8 49.0 35.2 6.3 

Aerial 10.29 3.519 2.412 102.9 104.9 114.3 53.6 14.7 

NJ nursery Ground 10.55 3.503 2.372 105.5 103.1 117.2 52.7 15.1 

Aerial 1.99 1.132 0.85 19.9 37.0 22.1 18.9 2.8 

OR nursery Ground 1.39 0.675 0.532 13.9 23.1 15.4 11.8 2.0 

Aerial 7.02 3.008 2.086 70.2 90.7 78.0 46.4 10.0 

TN nursery 

Ornamentals or Shade Trees (Other States) 

Ground 6.16 2.566 1.832 61.6 79.7 68.4 40.7 8.8 

CA nursery Ornamentals or Aerial 5.6 1.378 1.02 56.0 44.3 62.2 22.7 8.0 

L-3
Surface Water EECs (ppb) Freshwater Fish 

Estuarine /Marine Fish 

FreshwateInvertebrat

Crop 

Application Acute Chronic Acute Chronic Acute C

Crop Represented 

1

Scenario Type Peak 21-day 60-day RQ2 RQ3 RQ2 RQ3 RQ4 R

Shade Trees (CA) Ground 4.19 1.416 0.839 41.9 36.5 46.6 18.6 6.0 

Aerial 6.48 2.515 1.697 64.8 73.8 72.0 37.7 9.3 

FL potato Ground 6.56 2.5 1.574 65.6 68.4 72.9 35.0 9.4 

Aerial 2.01 0.976 0.576 20.1 25.0 22.3 12.8 2.9 

ID potato Ground 1.09 0.455 0.419 10.9 18.2 12.1 9.3 1.6 

Aerial 8.46 3.74 2.581 84.6 112.2 94.0 57.4 12.1 

ME potato Ground 8.92 3.718 2.559 89.2 111.3 99.1 56.9 12.7 

Aerial 1.94 0.861 0.567 19.4 24.7 21.6 12.6 2.8 

WA potato 

Potato 

Ground 1.64 0.716 0.567 16.4 24.7 18.2 12.6 2.3 

Aerial 12.26 4.697 3.372 122.6 146.6 136.2 74.9 17.5 

NC sweet potato Sweet Potato (Other States) Ground 12.65 4.768 3.386 126.5 147.2 140.6 75.2 18.1 

Aerial 2.72 1.028 0.571 27.2 24.8 30.2 12.7 3.9 

Potato 

Ground 1.85 0.577 0.364 18.5 15.8 20.6 8.1 2.6 

Aerial 1.21 0.632 0.363 12.1 15.8 13.4 8.1 1.7 

CA potato Sweet Potato (CA) Ground 0.55 0.26 0.153 5.5 6.7 6.1 3.4 0.8 

Aerial 10.71 4.893 3.504 107.1 152.3 119.0 77.9 15.3 

IL beans 

Ground 11.61 5.38 3.846 116.1 167.2 129.0 85.5 16.6 

Aerial 5.01 2.429 1.773 50.1 77.1 55.7 39.4 7.2 

MI beans 

Ground 5.1 2.304 1.599 51.0 69.5 56.7 35.5 7.3 

Aerial 1.86 0.765 0.424 18.6 18.4 20.7 9.4 2.7 

WA beans 

Ground 2.61 0.709 0.489 26.1 21.3 29.0 10.9 3.7 

Aerial 4.58 2.004 1.475 45.8 64.1 50.9 32.8 6.5 

FL peppers 

Beans & Peas (dry) & Pepper 

Ground 4.66 1.985 1.427 46.6 62.0 51.8 31.7 6.7 

Aerial 2.5 1.055 0.759 25.0 33.0 27.8 16.9 3.6 

FL carrots Carrot & Celery Ground 2.44 1.04 0.757 24.4 32.9 27.1 16.8 3.5 

Beans & Peas (dry) Aerial 2.23 0.877 0.523 22.3 22.7 24.8 11.6 3.2 & Pepper Ground 1.85 0.704 0.45 18.5 19.6 20.6 10.0 2.6 

CA row crops 

Carrot & Celery Aerial 1.88 0.753 0.556 18.8 24.2 20.9 12.4 2.7 

L-4
Surface Water EECs (ppb) Freshwater Fish 

Estuarine /Marine Fish 

FreshwateInvertebrat

Crop 

Application Acute Chronic Acute Chronic Acute C

Crop Represented 

1

Scenario Type Peak 21-day 60-day RQ2 RQ3 RQ2 RQ3 RQ4 R

Ground 0.89 0.378 0.24 8.9 10.4 9.9 5.3 1.3 Aerial 4.79 1.892 1.289 47.9 56.0 53.2 28.6 6.8 

FL strawberry Strawberry Ground 5.55 2.181 1.526 55.5 66.3 61.7 33.9 7.9 

Aerial 3.79 1.751 1.134 37.9 49.3 42.1 25.2 5.4 

CA strawberry Strawberry Ground 3.14 1.296 0.871 31.4 37.9 34.9 19.4 4.5 

Aerial 5.39 1.957 1.256 53.9 54.6 59.9 27.9 7.7 

NC tobacco Tobacco (Other States) Ground 6.28 2.089 1.274 62.8 55.4 69.8 28.3 9.0 

Aerial 6.91 2.927 2.111 69.1 91.8 76.8 46.9 9.9 

FL tomato 

Ground 7.1 2.948 2.113 71.0 91.9 78.9 47.0 10.1 

Aerial 11.14 4.658 2.84 111.4 123.5 123.8 63.1 15.9 

PA tomato 

Ground 12.39 4.971 3.009 123.9 130.8 137.7 66.9 17.7 

Aerial 8.07 2.805 1.869 80.7 81.3 89.7 41.5 11.5 

S-TX Vegetables 

Tomato 

Ground 8.35 2.862 1.873 83.5 81.4 92.8 41.6 11.9 

Aerial 1.83 0.822 0.458 18.3 19.9 20.3 10.2 2.6 

CA tomato Tomato 

Ground 2.08 0.72 0.463 20.8 20.1 23.1 10.3 3.0 

Aerial 2.23 0.798 0.489 22.3 21.3 24.8 10.9 3.2 

OR berries Blueberry (Other States) Ground 1.17 0.499 0.399 11.7 17.3 13.0 8.9 1.7 

OR berries (with 

W22521 met file 

from Hawaii) Pineapple (Hawaii) Aerial 

11.98 4.66 2.86 119.8 124.3 133.1 63.5 17.1 

Ground 12.34 4.68 2.68 123.4 116.3 137.1 59.4 17.6 

Freshwater Fish 

Estuarine /Marine Fish 

FreshwateInvertebrat

Acute RQ 

Chronic RQ 

Acute RQ 

Chronic RQ 

Acute RQ 

ChRQ 

min 5.5 5.8 6.1 3.0 0.8 max 165.2 191.1 183.6 97.7 23.6 

1 See Table 3.30 and Table 3.33 for additional description of the crop use categories and exposure scenarios modeled. CA eggplant repres

application rates specific to eggplant 

L-5
2 Acute RQ values calculated using the peak EEC for total endosulfan (ά + β + sulfate) divided by the acute LC50 of 0.1 μg a.i./L for freshw

(Sunderam et al. 1992; ECOTOX 5850) and the acute LC50 of 0.09 μg a.i./L for estuarine/marine fish based on spot (MRID 5005824) 

3 Chronic RQ calculated using the 60-d EEC for total endosulfan (ά + β + sulfate) divided by the estimated chronic NOAEC of 0.023 μg a.i

estimated chronic NOAEC of 0.045 μg a.i./L for spot (see Section 4.1 for details on estimation of the chronic NOAECs). 

4 Acute RQ values calculated using the peak EEC for total endosulfan (ά + β + sulfate) divided by the acute LC50 of 0.7 μg a.i./L for freshw

mayfly (Leonard, et al. 2001; ECOTOX 62479) and the acute LC50 of 0.04 μg a.i./L for estuarine/marine invertebrates based on pink shrim

5 Chronic RQ calculated using the 21-d EEC for total endosulfan (ά + β + sulfate) divided by the estimated chronic NOAEC of 0.011 μg a.i

chronic NOAEC of 0.013 μg a.i./L for pink shrimp (see Section 4.1 for details on estimation of the chronic NOAEC). 

L-6