7/30/2014 Page 1 of 5 

POST-FOCUS EXPOSURE REPORT 

This assessment was updated based on the Post-Focus Draft Revision 2 dated 7/8/2014 

 Chemical ID: P-14-0364 Reviewer: Bevington/BC 

 

 

Results Table: Dose, Concentration, and Days Exceeded Results Summary 

Exposure 

Scenario1 

 Water Landfill Stack Air Fugitive Air 

Drinking Water Fish Ingestion 

ADR LADD ADR LADD 7Q104 

CC = 

170 

PDM 

Days 

Exceeded

LADD ADR LADD ADR LADD 

Release 

activity(ies)2; 

exposure 

calculation(s)3 

mg/kg/day mg/kg/day mg/kg/day mg/kg/day μg/l # Days mg/kg/day mg/kg/day mg/kg/day mg/kg/day mg/kg/day

MFG: max 

acute eco 

--- --- --- --- 2.23E+02 --- --- --- --- --- --- 

PROC: max 

acute eco 

--- --- --- --- 1.31E+01 --- --- --- --- --- --- 

1 Exposure scenario titles consist of release activity followed by exposure calculation abbreviation. 

2 Release activities are from engineering report's Manufacturing (Mfg), Processing (Proc) and Use release activity 

labels. Multiple release activities are combined in one exposure scenario if their releases occur at same location. 

3 Exposure calculations are Acute Dose Rate (ADR), Lifetime Average Daily Dose (LADD), and Probabilistic 

Dilution Model (PDM). There may be one, two, or all three exposure calculations per exposure scenario. 

 CC is the aquatic concentration of concern. 

4 This column displays concentration values for the 7Q10 streamflow, which is defined as the average daily 

streamflow of the seven consecutive days of lowest flow within a ten year period. 

Remarks: Submitter states on-site WWTP used, but not assessed.
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 POST-FOCUS EXPOSURE REPORT 

Chemical ID: P-14-0364 Assessor: Bevington/BC 

ENVIRONMENTAL RELEASES 

 Scenario#:1 Number of Release Sites: 1. 

 Release Activity: MFG:USE1: Max ADR 

 Release Description: WATER LANDFILL 

Non-sludge/Sludge 

STACK FUGITIVE 

Total Releases: 11.30 N/A N/A N/A 

 (kg/yr) (kg/yr) (kg/yr) (kg/yr) 

 

 Non-sludge/Sludge 

Release Days/yr: 2.00 0.00/0.00 N/A N/A 

Per Site Release: 5.65 N/A/0.00 N/A N/A 

 (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day) 

Remarks: 
7/30/2014 Page 3 of 5 

POST-FOCUS EXPOSURE REPORT 

 Chemical ID: P-14-0364 

SITE-SPECIFIC HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES 

SCENARIO NUMBER:1 RELEASE ACTIVITY: MFG:USE1: Max ADR 

FACILITY NAME: WCRSA/LOWER REEDY RIVER PLANT 

FACILITY LOCATION: GREENVILLE SC 29607 

RECEIVING WATER NAME: REEDY R 

REACH NUMBER: 03050109053 FACILITY ON REACH: Yes DISCHARGE TYPE: Direct 

NPDES PERMIT #: SC0024261 EXPOSED POPULATION: Adult 

WWT 

REMOVAL 

(%) 

RELEASE 

DAYS 

PRETREATMENT 

RELEASE 

(kg/site/day) 

POSTTREATMENT 

RELEASE 

(kg/site/day) 

DWT 

(%) BCF 

(L/kg) 

50. 2. 5.65 2.83 0.00 0.00 

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER 

FLOW DESCRIPTOR Harmonic Mean 30Q5 7Q10 1Q10 PLANT 

FLOW (MLD) 65.81 21.37 12.68 12.68 NA 

CONCENTRATION (μg/L) 42.92 132.22 222.79 222.79 NA 

DRINKING WATER INGESTION AND FISH INGESTION EXPOSURE ESTIMATES 

Exposure Units 

Drinking Water 

Results 

Drinking Water 

Units 

Fish Ingestion 

Results 

Fish Ingestion 

Units 

Cancer 

LADDpot 1.83E-06 mg/kg/day 0.00 mg/kg/day 

LADCpot 9.41E-05 mg/L 0.00 mg/kg 

Acute 

ADRpot 1.10E-02 mg/kg/day 0.00 mg/kg/day 

Surface Water Comments: 
7/30/2014 Page 4 of 5 

 POST-FOCUS EXPOSURE REPORT 

Chemical ID: P-14-0364 Assessor: Bevington/BC 

ENVIRONMENTAL RELEASES 

 Scenario#:2 Number of Release Sites: 20. 

 Release Activity: PROC:USE3: Max ADR 

 Release Description: WATER LANDFILL 

Non-sludge/Sludge 

STACK FUGITIVE 

Total Releases: 21.00 N/A N/A N/A 

 (kg/yr) (kg/yr) (kg/yr) (kg/yr) 

 

 Non-sludge/Sludge 

Release Days/yr: 5.00 0.00/0.00 N/A N/A 

Per Site Release: 0.21 N/A/0.00 N/A N/A 

 (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day) 

Remarks: 
7/30/2014 Page 5 of 5 

POST-FOCUS EXPOSURE REPORT 

 Chemical ID: P-14-0364 

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES 

SCENARIO #: 2 Number of Sites: 20 RELEASE 

ACTIVITY:PROC:USE3: Max 

ADR 

SIC-CODE DESCRIPTION: Plastic Resins & Synthetic Fiber Manufacture 

SIC-CODE (S): 2821,2823,2824 EXPOSED POPULATION: Adult 

WWT 

REMOVAL 

(%) 

RELEASE 

DAYS 

PRETREATMENT 

RELEASE 

(kg/site/day) 

POSTTREATMENT 

RELEASE 

(kg/site/day) 

DWT 

(%) BCF 

(L/kg) 

50.00 5. 0.21 0.10 0.00 0.00 

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER 

PLANT 

TYPE 

% ILE 

FACILITY 

STREAM FLOW (MLD) STREAM CONC. (μg/l) 

Harmonic 

Mean 30Q5 7Q10 1Q10 

Harmonic 

Mean 30Q5 7Q10 1Q10 

ALL 50 1321.81 604.40 403.46 328.18 7.94E-02 0.17 0.26 0.32 

ALL 10 44.53 13.72 8.02 7.44 2.36 7.65 13.09 14.11 

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES 

Exposure Units 

Drinking Water Results Drinking 

Water Units Fish Ingestion Results 

Fish 

Ingestion 

Units 

50% 10% 50% 10% 

Cancer 

LADDpot 8.49E-09 2.52E-07 mg/kg/day 0.00 0.00 mg/kg/day 

LADCpot 4.35E-07 1.29E-05 mg/L 0.00 0.00 mg/kg 

Acute 

ADRpot 1.45E-05 6.40E-04 mg/kg/day 0.00 0.00 mg/kg/day 

SIC Code Comments: