Mead Westvaco Industrial FacilityWastewater Treatment Workgroup

Gopal Bhatt

Penn State University

06/07/2016

1. Reported phosphorus loads

2. Weight of evidence approach

3. USGS-WRTDS tool

4. Phase 6 Beta 2 as a proof of concept

5. Review and approve

Presentation outline

2

3

Water quality monitoring sites

4

5

0

200

400

600

800

1000

1200

1400

1600

1800

0

1

2

3

4

5

6

7

8

9

1980 1985 1990 1995 2000 2005 2010 2015 2020

P L

oad

(lb

/mo

nth

)

P C

on

cen

trat

ion

(m

g/l

)

P Concentration (mg/l) P Load (lb/month)

1. Input data for Mead Westvaco Industrial Facility

6

2. Weight of evidence

7

8

9

10

11

Mead Westvaco Industrial Facility

Q-C Plot

Phase 6 Beta 1

12

… suggests major loading is from a point source.

13

3. USGS-WRTDS (Hirsch et al., 2010; Hirsch and Di Cicco, 2014) is a statistical model especially designed to estimate long-term trends in loads and concentrations.

WRTDS Input – Daily Flow

WRTDS Input – Concentration Samples

Jackson River below Dunlop Creek, Covington, VA

1985 to 1996

14

WRTDS estimates (a) daily concentration, (b) daily load

PHASE 6BETA 1

PHOSPHORUSJACKSON RIVER BL DUNLAP CREEK AT COVINGTON, VA

15

PHASE 6BETA 2

PHOSPHORUSJACKSON RIVER BL DUNLAP CREEK AT COVINGTON, VA

UPDATE

16

1. Revise assumptions for the 1984 – 1996 period

2. The process for estimating load

5. Review and approve …

17

0

100

200

300

400

500

600

700

800

1980 1985 1990 1995 2000 2005 2010 2015 2020

Flo

w (

mgd

)

RIVER Q PLANT Q

River flow is approximately 13 times that of point source discharge.

0

1

2

3

4

5

6

7

0 1000 2000 3000 4000 5000 6000

TOTP

(M

G/L

)

FLOW (CFS)

1985-1995 1996-2004 2005-2014