1 UNITED STA

TES ENVIRONMENTA L PROTECTION A GENCY WA SHINGTON, D.C. 20460
OFFICE OF PREVENTION, PESTICIDES AN D TOXIC SUBSTA NCES PC Code No.: 1 29034 DP Barcode s : D 359097 , 3 62612 Date: July

24, 2009 SUBJECT: Drinking Water Assessment for: (1) I R

- 4 Registration for Flumioxazin to be used

on Cucurbit Group 9, L eaf Petioles Subgroup 4B and Hops, an d (2) Registration for Flumioxazin to be Used in the Noncrop Areas TO: Joanne Miller, R M 23

Barbara M adden , RM 05 John Red d en Registration Division (7505P) FROM: Larry

L iu, Environmental Scientist, Ph.D. Environmental Fate and Effects Division (7507P) THROUGH: Mah Shamim , Ph.D., Branch Chief

Environmental Risk Branch V Environme ntal Fate and Effects Division (7507P) The previous drinking water a ssessment for use of flumioxazin on cotton, almonds, grapes, Christmas trees, deciduous trees and container and field grown ornamentals ( completed on July 7, 2003) can be used for the currently proposed uses of Chateau WDG and Broadstar Herbicides. The ne w uses include: (1) I R

- 4 Registration for Flumioxazin to be used on Cucurbit Group 9, Leaf Petioles Subgroup 4B and Hops, and (2) Registration for Flumioxazin in the Noncrop Areas . T he maximum single application rates and the y early /seasonal application r ates for the proposed uses are either lower than or equivalent t o the rates used in the drinking water assessment completed on July 17, 2003. The minimum application intervals for the proposed new uses are the same or longer than the interval used in the drinking water assessment completed on July

17, 2003. Table 1 includes the application rates and numbers for flumioxazin on Cucurbit Group 9, L eaf Petioles Subgroup 4B and Hops . Table 2 includes the application rates and numbers for flumioxazin in the No ncrop Areas.2 \ Table 1. Uses and Application Rates for Flumioxazin on Cucurbit Group 9 , Leaf Petioles

Subgroup 4B , and Hops in the I R4 Registration ( Chateau WDG Herbicide ). Crop Maximum

single application rate (lb ai/A) Maximum

application number per season Application

interval (day s) Maximum

application rate per season (lb ai/A/season) Application

methods

Cucurbit Group 9 (such as cucumber) 0.10 1

- 0.10 Broadcast, band, aerial, chemigation Leaf Petioles Subgroup 4B (such as celery

) 0.13 2 35 0.26 Broadcast, band, aerial, chemigation Hops 0.19 1

- 0.19 Broadcast, band, aerial, chemigation Table 2. Uses and A pplication rates i n the N oncrop A reas for F lumioxazin Registration (Broadstar H erbicide). Uses Single

application rate (lb ai/A) Maximu m

application number per season Application

interval (day s) Maximum

application rate per season (lb ai/A/season) Application

methods

Noncrop areas in apartment complexes, gravel surfaces, ground mats, golf courses, office complexes, parks, parking areas, recreational sites, schools, sidewalks and other similar sites * 0.375 2 56 0.750 Drop or rotary ty pe granular equipment

* Label also includes uses on “container, field or landscape grown ornamental shrubs, trees, Christmas trees, ground covers, non

- beari ng fruit and nut trees, vines, and bare ground non

- crop areas” The previous drinking water assessment on cotton, almonds, grapes, Christmas trees, deciduous trees and container and field grown ornamentals is attached.3 UNITED STA

TES ENVIRONMENTA L PROTEC TION A GENCY WA SHINGTON, D.C. 20460

PC Code: 129034

MEMORANDUM : Date: July

7, 2003 SUBJECT: Tier I Estimated Environmental Concentrations for Flumioxazin and I ts

Degradates from the Use on cotton, almonds, grapes, Christmas trees, deciduous tree s and container and field grown ornamentals TO: Joanne Miller, PM 23

J. Stone, PM Team Reviewer Registration Division Doug Dotson Health Effects Division FROM: Larry

L iu, Ph.D., Environmental Scientist Environmental Risk Branch V Environmental Fate and Effects Division (7507C) THROUGH: Mah Shamim, Ph.D., Branch Chief

Environmental Risk Branch V Environmental Fate and Effects Division (7507C)

This document summarizes the Tier I Estimated Environmental Concentrations (EECs) for flumioxazin under t he use for cotton, almonds, grapes, Christmas trees, deciduous trees and container and field grown ornamentals. The FI RST and SCI

- GROW models were used to estimate the concentrations of this chemical and its degradates in surface water and groundwater, r espectively . These values represent upper

- bound estimates of the concentrations that might be found in surface water and groundwater due to the use of flumioxazin on cotton, almonds, grapes, Christmas trees, deciduous trees and container and field grown o rnamentals. I t should be noted that: (1) flumioxazin water numbers were generated from the models in which the Koc values used were obtained from a column leaching study instead of the ty

pical absorption study ; (2) 482

- HA water numbers were generated from the models in which the Koc values for THPA were used; (3) APF and THPA water numbers were generated from the adsorption/desorption4

studies; and (4) the initial residue levels for the parent and its degradates used in the models were based on the 30

- day

r esults of the hy droly sis study . Due to the rapid hy droly sis rate of the parent compound, EFED acknowledged the difficulty in obtaining adsorption coefficients from the batch equilibrium study . Due to the rapid dissipating of flumioxazin in the environme nt, EFED is not concerned about the parent compound. Results at pH 7 are presented below:

Peak Conc. in Surface Water Conc. in Groundwater Flumioxazin 1.03 ppb negligible 482

- HA 6.87 ppb 45.27 ppb APF 26.46 ppb 2.66 ppb THPA 27.67 p pb 182.28 ppb Should the results of this assessment need further refinement, please contact us as soon as possible so that we may

schedule a Tier I I assessment.

Water Resource Assessment Flumioxazin is unlikely

to c ontaminate surface water and groundwater. However, its hy droly sis degradates (482

- HA, APF, and THPA) are more persistent and mobile and they tend to reach surface water and groundwater at much higher concentrations. Fate studies show that flumioxazin is relative mobile (average Koc = 557, note: Koc values were estimated from a column leaching study

), but non

- persistent (hy droly sis half

- life at pH 7 = 1 day ; aqueous photoly sis half

- life at pH 5 = 1 day ; soil aerobic metabolism half life = 14.7 day s; aquati c anaerobic metabolism half

- life = 0.2 day s). Since hy droly sis appears to be the major route of dissipation in the environment, EFED used the residue levels detected at the end of hy droly sis as the input parameters for modeling. Table 1 listed the degra dates identified and their relative concentrations from the hy droly sis study . Based on the relative concentrations presented in Table 1 and the application rate of the parent, the worst residue levels that could be found on the soil surface were estimated (see Table 2). Table 1. Percentages of the applied radioactivity identified at the end of 30

- day hy droly sis study Compound pH 5 pH 7 pH 9 % of the applied Flumioxazin negligible 4.7 negligible 482

- HA negligible 9.3 97.35

APF 83. 6 80.0 negligible THPA 95.4 83.6 negligible Table 2. Maximum amounts of flumioxazin and its degradates expected to be on the soil surface after flumioxazin was applied at the maximum rate of 0.383 lb ai/A/application (two applications per y ear w ith an application interval of 30

- 60 day s). Compound pH 5 pH 7 pH 9 lbs ai/A/application Flumioxazin negligible 0.019 negligible 482

- HA negligible 0.038 0.391 APF 0.199 0.192 negligible THPA 0.176 0.153 negligible The FI RST and SCI

- GROW models were used to estimate the concentrations of this chemical and its degradates in surface water and groundwater, respectively . These values represent upper

bound estimates of the concentrations that might be found in surface water and groundwater due to the use of flumioxazin at the maximum application rate. Tables 3 and 4 listed the residue concentrations in the surface water and groundwater, respectively

. Table 3. Surface water estimated environmental peak concentrations for flumio xazin and its major degradates in various pH. pH 5 pH 7 pH 9 Flumioxazin negligible 1.03 ppb negligible 482

- HA negligible 6.87 ppb 70.71 ppb APF 27.43 ppb 26.46 ppb negligible THPA 31.83 ppb 27.67 ppb negligible Table 4. Ground water estimated environmental concentrations for flumioxazin and its major degradates in various pH. pH 5 pH 7 pH 96 pH 5 pH 7 pH 9 Flumioxazin negligible negligible negligible 482

- HA negligible 45.27 ppb 465.82 ppb APF 2.76 ppb 2.66 ppb negligible THPA 209.68 ppb 182.28 ppb negligible
Surface Water and Groundwater Input Parameters Surface water concentrations of flumioxazin were estimated with FI RST. The estimates made with FI RST are intended here to represent drinking water sources with significant turnover such that there is no y ear - to
- ye ar accumulation. Ground water concentrations were predicted with SCI

- GROW. I nput parameters for FI RST and SCI

- GROW at pH 7 (Tables 5

- 8) were sele cted according to current EFED guidance. The application rates for flumioxazin for pH 5 and 9 can be found in Table 2. I t should be noted that the worst cases were assumed for those input parameters which no information were available (such as APF was as sumed to be very stable under aerobic soil metabolism conditions with a half

- life of 999 day s). Since the intended use of FIRST in this particular simulation is only to represent a water body with significant water turnover, only

the peak concentration ha s phy sical significance. The averaged concentrations reported in Appendix 1 do not account for the turnover and thus are less phy sically meaningful. The SCI

- GROW output file is located in Appendix 2. Table 5. FI RST and SCI

- GROW input parameters for f lumioxazin at pH 7. Parameter FIRST Values SCI

- GROW Values Application number per y ear 2 2 Application rate 0.019 lb ai/acre 0.019 lb ai/acre Application ty

pe aerial pH 7 Hy droly sis half life 1 day 1 day Photoly sis half life 1 d ay n/a Aerobic soil metabolism half life 23.4 14.7 day s (mean value) Aerobic aquatic half life n/a n/a Solubility 1.8 ppm n/a Koc * 656 112 * Koc was estimated from a column leaching study instead of the adsorption study . Due to the rap id hy droly sis rate of the parent compound, EFED acknowledged the difficulty in obtaining adsorption coefficients from the batch equilibrium study

.7

Table 6. FI RST and SCI

- GROW input parameters for 482

- HA at pH 7. Parameter FIRST Values SCI

- GROW Values Application number per y ear 2 2 Application rate 0.038 lb ai/acre 0.038 lb ai/acre Application ty

pe aerial pH 7 Hy droly sis half life stable stable Photoly sis half life stable n/a Aerobic soil metabolism half life stable stable Aerobic aquatic half life stable n/a Solubility * 10,000 ppm n/a Koc ** 13 13 * No water solubility

is available so 10,000 ppm was assumed. ** Koc for THPA was used for 482

- HA Table 7. FI RST and SCI

- GROW input parameters for APF at pH 7. Parameter FIRST Values SCI

- GROW Values Application number per y ear 2 2 Application rate 0.192 lb ai/acre 0.192 lb ai/acre Application ty

pe aerial pH 7 Hy droly sis half life stable stable Photoly sis half life stable n/a Aerobi c soil metabolism half life stable stable Aerobic aquatic half life stable n/a Solubility * 10,000 ppm n/a Koc 201 201 * No water solubility

is available so 10,000 ppm was assumed. Table 8. FI RST and SCI

- GROW input parameters for THPA a t pH 7. Parameter FIRST Values SCI

- GROW Values Application number per y ear 2 28

Parameter FIRST Values SCI

- GROW Values Application rate 0.153 lb ai/acre 0.153 lb ai/acre Application ty

pe aerial pH 7 Hy droly sis half life stable stable Photoly sis half life stable n/a Aerobic soil metabolism half life stable stable Aerobic aquatic half life stable n/a Solubility * 10,000 ppm n/a Koc 13 13 * No water solubility

is available so 10,000 ppm was assumed.
Drinking Water Recommendations EFED has recommen ded that the Health Effects Division use the concentrations presented in Table 9 for drinking water EECs. Table 9. Estimated EECs for flumioxazin and its degradates in surface water and groundwater at pH 7. Compound Average 56

- Day

Conc. in Surface W ater Peak Conc. in

Surface Water Conc. in

Groundwater
Flumioxazin negligible 1.03 ppb negligible 482

- HA 4.84 ppb 6.87 ppb 45.27 ppb APF 12.85 ppb 26.46 ppb 2.66 ppb THPA 19.50 ppb 27.67 ppb 182.28 ppb9 Appendix 1: FIRST for Enviro nmental Fate Assessment
Background Information on FIRST: FIRST is a new screening model designed to estimate the pesticide concentrations found in water for use in drinking water assessments. It provides high - end values on the concentrations that might be found in a small drinking water reservoir due to the use of pesticide. Like GENEEC, the model previously used for Tier I screening level, FIRST is a single - event model (one run - off event), but can account for spray drift from multiple applications. F IRST uses a Drinking Water Reservoir instead of a pond as the standard scenario. The FIRST scenario includes a 427 acres field immediately adjacent to a 13 acres reservoir, 9 feet deep, with continuous flow (two turnovers per year). The pond receives a spray drift event from each application plus one runoff event. The runoff event moves a maximum of 8% of the applied pesticide into the pond. This amount can be reduced due to degradation on field and the effect of binding to soil. Spray drift is equal to 6.4% of the applied concentration from the ground spray application and 16% for aerial applications. FIRST also makes adjustments for the percent crop area. While FIRST assumes that the entire watershed would not be treated, the use of a PCA is still a screen because it represents the highest percentage of crop cover of any large watershed in the US, and it assumes that the entire crop is being treated. Various other conservative assumptions of FIRST include the use of a small drinking water reservoir surrounded by a runoff - prone watershed, the use of the maximum use rate, no buffer zone, and a single large rainfall. FIRST Results at various pHs: PH 5 RUN No. 11 FOR APF ON Christmas tree * INPUT VALUES *

--------------------- ---------------------------------------------- ------------------------------------------- - RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN )

------------------------------------------------------------------- ------------------------------------------- - .199( .398) 2 30 201.0 10000.0 AERIAL(16.0) 87.0 .0 FIELD AND RESERVOIR HALFLIFE VALU ES (DAYS)

----------------------------------------------------------------- --------------------------------------------------- --- METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.

- EFF) (RESER.) (RESER.)

--------------------------------------------------------------- --------------------------------------------------- ----- .00 2 N/A .00

- .00 .00 .00 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.0 AUG 1, 2001

------------------- --------------------- ------------------------------------------------- PEAK DAY (ACUTE) ANNUAL AVERAGE (C HRONIC) CONCENTRATION CONCENTRATION

---------------------------------------- ---------------------- ---------------------------10 27.426 13.322 **************************** *************************************************************** pH 5 RUN No. 2 FOR THPA ON Christmas tree * INPUT VALUES *

------------------------------------------------------------------- -------------------------------------- ----- - RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

------------------------------------------------------------------- ------------ ------------------------------- - .176( .352) 2 30 13.0 10000.0 AERIAL(16.0) 87.0 .0 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS)

----------------------------------------------------------------- -- ------------------------------------------------- --- METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.

- EFF) (RESER.) (RESER.)

------------------------------- -------------------------------- --------------------------------------------------- ----- .00 2 N/A .00

- .00 .00 .00 UNTREATED WATER CONC (MICROGRAMS/LI TER (PPB)) Ver 1.0 AUG 1, 2001

------------------- --------------------- ------------------------------------------------- PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) CONCENTRATION CONCENTRATION

------- --------------------------------- ---------------------- --------------------------- 31.830 22.436 ******************************************************************************************** pH 7 RUN No. 3 FOR Flumioxazin ON Christmas tree * INPUT VALUES *

------------------------------------------------------------------- ------------------------------------------- - RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

------------------------------------------------------------------- ------------------------------------------- - .019( .027) 2 30 656.0 1.8 AERIAL(16.0) 87.0 .0 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS)

----------------------------------------------------------------- --------------------------------------------------- --- METABOLIC DAYS UN TIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.

- EFF) (RESER.) (RESER.)

--------------------------------------------------------------- ------------------------------------------ --------- ----- 23.40 2 1.00 1.00

- 124.00 .00 .99 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.0 AUG 1, 2001

------------------------------------------- ------------------- ------------------ ------ PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) CONCENTRATION CONCENTRATION

------------------------------------------------------------------- ------------------ - 1.034 .004 ************************************************************************************ pH 711

RUN No. 4 FOR 482

- HA ON Christmas tree * INPUT VALUES *

------------------- ------------------------------------------------ ------------------------------------------- - RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA ( IN)

------------------------------------------------------------------- ------------------------------------------- - .038( .076) 2 30 13.0 10000.0 AERIAL(16.0) 87.0 .0 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS)

----------------------------------------------------------------- --------------------------------------------------- --- METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED (FIELD) RAIN/RUNOFF (RESERV OIR) (RES.

- EFF) (RESER.) (RESER.)

--------------------------------------------------------------- --------------------------------------------------- ----- .00 2 N/A .00

- .00 .00 .00 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.0 AUG 1, 2001

---- ------------------------- ---------------------------------------------------------------- PEAK DAY (ACUTE) ANNUAL A VERAGE (CHRONIC) CONCENTRATION CONCENTRATION

----------------------------- ------------------------- --------------------------------------- 6.872 4.844 *************************** ********************************************************** pH 7 RUN No. 4 FOR APF ON Christmas tree * INPUT VALUES *

------------------------------------------------------------------- ------------------------------------------- - RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

------------------------------------------------------------------- -------------------- ----------------------- - .192( .384) 2 30 201.0 10000.0 AERIAL(16.0) 87.0 .0 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS)

----------------------------------------------------------------- ------------- -------------------------------------- --- METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.

- EFF) (RESER.) (RESER.)

------------------------------------------ --------------------- --------------------------------------------------- ----- .00 2 N/A .00

- .00 .00 .00 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.0 AUG 1, 2001

------------------------------------------ ------------------ -------------------------- PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) CONCENTRATION CONCENTRATION

---------------- -------------------------------------------- ------------------ -------- 26.461 12.854 ********************************************************************************* pH 7 RUN No. 6 FOR THPA ON Christmas tree * INPUT VALUES *

------------------------------------------------------------------- ------------------------------------------- - RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

------------------------------------------------------------------- ------------------------------------------- - .153( .306) 2 30 13.0 10000.0 AER IAL(16.0) 87.0 .012

FIELD AND RESERVOIR HALFLIFE VALUES (DAYS)

----------------------------------------------------------------- --------------------------------------------------- --- METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLY SIS METABOLIC COMBINED (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.

- EFF) (RESER.) (RESER.)

--------------------------------------------------------------- --------------------------------------------------- ----- .00 2 N/A .00

- .00 .00 .00 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.0 AUG 1, 2001

--------------------------------------------------------------- -- --------------- ----- PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) CONCENTRATION CONCENTRATION

------------------------------------------------------------------- ------------------ - 27.670 19.504 **************************************************************************************** pH 9 RUN No. 7 FOR 482

- HA ON Christmas tree * INPUT VALUES *

----------------------------------------------------- -------------- ------------------------------------------- - RATE (#/AC) No.APPS & SOIL SOLUBIL APPL TYPE %CROPPED INCORP ONE(MULT) INTERVAL Koc (PPM ) (%DRIFT) AREA (IN)

--------------------------- ---------------------------------------- ------------------------------------------- - .391( .782) 2 30 13.0 10000.0 AERIAL(16.0) 87.0 .0 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS)

---------------- ------------------------------------------------- --------------------------------------------------- --- METABOLIC DAYS UNTIL HYDROLYSIS PHOTOLYSIS METABOLIC COMBINED (FIELD) RAIN/RUNOFF (RESERVOIR) (RES.

- EFF) (RESER.) (RESER.)

--------------------------------------------------------------- --------------------------------------------------- ----- .00 2 N/A .00

- .00 .00 .00 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.0 AUG 1, 2001

------------------------------------------------------------------ ----------------------------- -- PEAK DAY (ACUTE) ANNUAL AVERAGE (CHRONIC) CONCENTRATION CONCENTRATION

------------------------------------------------------------------- ----------------------------- - 70.713 49.843

------------------------------------ --------------------------------------------------------------13 Appendix 2: SCI - ROW for Environmental Fate Assessment
Background Information on SCI - GROW: SCI - GROW provides a ground water screening exposure value to be used in determining the potentia l risk to human health from drinking water contaminated with the pesticide. Since the SCI - GROW concentrations are likely to be approached in only a very small percentage of drinking water sources, i.e., highly vulnerable aquifers, it is not appropriate to use SCI - GROW concentrations for national or regional exposure estimates. SCI - GROW estimates likely ground water concentrations if the pesticide is used at the maximum allowable rate in areas where ground water is exceptionally vulnerable to contamination. In most cases, a large majority of the use area will have ground water that is less vulnerable to contamination that the areas used to derive the SCI - GROW estimate.
SCI

- GROW Results at pH 5 VERSION 2.2: NOVEMBER 1, 2001 RUN No. 11 FOR APF ** INPUT VALUES **

-------------------------------- -------------------------------------- ------------------------ APP RATE APPS/ TOTAL/ SOIL AEROBIC SOIL METAB (LBS/AC) YEAR SEASON KOC HAL FLIFE (DAYS)

------------------------------------------------ --------------------------------------- -------- .199 2 .398 201.0 999.00 GROUND

- WATER SCREENING CONCENTRATION (IN UG/L

- PPB)

- -------------------------------------------------------

2.756142

--------------------------------------------------------
RUN No. 12 FOR THPA ** INPUT VALUES **

-- ------------------------- --------------- ------------------------------------------------------ APP RATE APPS/ TOTAL/ SOIL AEROBIC SOIL METAB (LBS/AC) YEAR SEASON KOC HALFLIFE (DAYS)

------------------------------------------ ---------------- ------------------------- ------------- .176 2 .352 13.0 999.00

GROUND

- WATER SCREENING CONCENTRATION (IN UG/L

- PPB)

--------------------------------------------------------

209.676900

--------------------------------------------------------14

SCIGROW Results at pH 7 : RUN No. 1 FOR flumioxazin ** INPUT VALUES **

-------------------------------------------------- ----------- ----------------------------------- ----- APP RATE APPS/ TOTAL/ SOIL AEROBIC SOIL METAB (LBS/AC) YEAR SEASON KOC HALFLIFE (DAYS)

----------------------------------------------------- --------------------------------- ------------ --- .019 2 .038 112.0 14.70 GROUND

- WATER SCREENING CONCENTRATION (IN UG/L

- PPB)

--------------------------------------------------------

.00317

- ------------------------------------------------------- RUN No. 2 FOR 482

- HA ** INPUT VALUES **

--- ---------------------------------------------- ----------------------------------------------------- APP RATE APPS/ TOTAL/ SOIL AEROBIC SOIL METAB (LBS/AC) YEAR SEASON KOC HALFLIFE (DAYS)

------------------------------------------------- ----------------------------------------------- ------- .038 2 .076 13.0 999.00 GROUND

- WATER SCREENING CONCENTRATION (IN UG/L

- PPB)

--------------------------------------------------------

45.271150

--------------------------------------------------------
R UN No. 3 FOR APF ** INPUT VALUES **

--- ----------------------------------------------- ----------------------------------------------------- APP RATE APPS/ TOTAL/ SOIL AEROBIC SOIL METAB (LBS/AC) YEAR SEASON KOC HALFLIFE (DAYS)

-------------------------------------------------- ------------------------------------------------ ------ .192 2 .384 201.0 999.00 GROUND

- WATER SCREENING CONCEN TRATION (IN UG/L

- PPB)

--------------------------------------------------------

2.659193

--------------------------------------------------------
RUN No. 4 FOR THPA ** INPUT VALUES **

------------------------------------------------ -------------------------------------------------------- APP RATE APPS/ TOTAL/ SOIL AEROBIC SOIL METAB (LBS/AC) YEAR SEASON KOC HALFLIFE (DAYS)

---------------------- ----------------------------- ----------------------------------------------- ----- .153 2 .306 13.0 999.00 GROUND

- WATER SCREENING CONCENTRATION (IN UG/L

- PPB)

------------------------------------ --------------------

182.275900

--------------------------------------------------------15

SCI

- GROW Results at pH 9 RUN No. 21 FOR 482

- HA ** INPUT VALUES **

--------------------------------- ---- -------------------------------- ----------------------- APP RATE APPS/ TOTAL/ SOIL AEROBIC SOIL METAB (LBS/AC) YEAR SEASON KOC HALFLIFE (DAYS)

-------------------------------------------------- ---------------------- -------------- ------ .391 2 .782 13.0 999.00

GROUND

- WATER SCREENING CONCENTRATION (IN UG/L

- PPB)

--------------------------------------------------------

465.8 16300

--------------------------------------------------------