pollutant removal effectiveness of the mcconnell springs stormwater quality wetland pond and the...

Pollutant Removal Effectiveness of the McConnell Springs Stormwater Quality Wetland Pond

and the Gainesway Pond Retrofit Project, Lexington, KY

David J. Price, Ph.D.Susan L. Plueger, P.E.

Division of Water Quality

Funded in part through §319(h) Non-Point Source Implementation Grants from the

U.S. EPA administered by KDOW

Gainesway Pond Retrofit Project Gainesway Pond Retrofit Project

The “pond” before constructionThe “pond” before construction

LayoutDesign Firm: CDP Engineers

McConnell Springs Stormwater Quality

Wetland Pond


Wetland Pond

The site before construction

Welcome CenterMcConnellSprings

Design Firm: Carman

Layout

A pond liner installedA pond liner installed Boardwalk taking shapeBoardwalk taking shape

The site today

Pollutant Removal Results


Wetland Pond



Wetland Pond

Locating Sampling Sites and Training of Personnel

Sampling LocationsSampling Locations

M1M2

M3

M5

M4

Sampling at McConnell Springs Stormwater Quality Wetland Project

Water Quality Parameters Measured at McConnell Springs Stormwater Quality Wetland Project

• Temperature

• pH

• ORP

• Dissolved Oxygen

• Conductivity

• Total Dissolved Solids

• Salinity

• Alkalinity

• Hardness

• Carbonaceous Biological Oxygen Demand (CBOD)

• Total Suspended Solids

• Total Ammonia

• Nitrate

• Nitrite

• Total Phosphorous

• Ortho-phosphate

• E. coli

• Other Coliforms

• Turbidity

• Clarity

• Depth

Metals analyzed by ICP at UK-KGS• Aluminum• Antimony• Arsenic• Barium• Beryllium• Boron• Cadmium• Calcium• Chromium• Cobalt• Copper• Gold• Iron• Lead• Lithium

• Magnesium• Manganese• Nickel• Phosphorus• Potassium• Selenium• Silicon• Silver• Sodium• Strontium• Sulfur• Thallium• Tin• Vanadium• Zinc

0.0

0.5

1.0

1.5

2.0

2.5

3.0

1/1

1/1

5

1/2

9

2/1

2

2/2

6

3/1

2

3/2

6

4/9

4/2

3

5/7

5/2

1

6/4

6/1

8

7/2

7/1

6

7/3

0

8/1

3

8/2

7

9/1

0

9/2

4

10

/8

10

/22

11

/5

11

/19

12

/3

Rai

nfa

ll (

Inch

es)

3/26 4/22

Rainfall Levels Recorded at the Bluegrass Airport for 2010

4/26

6/9

6/14

7/26

8/27

12/2

• Nine Sampling Dates

• pH 7.00 – 9.75 SU

• DO 3.03 – 8.40 mg/L

• Conductivity 81 – 1614 µS/cm

• Alkalinity 45 – 210 mg/L

• Hardness 65 – 1650 mg/L

• Nitrate <0.01 – 5.86 mg/L

• Nitrite <0.05 – 0.52 mg/L

McConnell Springs Water Quality Results for 2010

0

5

10

15

20

25

30

35

40

M1 M2 M3 M4 M5

Sampling Station

TS

S (

mg

/L)

3/26

4/26

6/9

6/14

7/26

8/27

12/2

Total Suspended Solids (TSS) in Water Samples from McConnell Springs Stormwater Quality Wetland Project

Year 2010

0

5

10

15

20

25

30

35

40

M1 M2 M3 M4 M5

Sampling Station

TS

S (

mg

/L)

3/26

4/26

6/9

6/14


Spring-Summer

0

5

10

15

20

25

30

35

40

M1 M2 M3 M4 M5

Sampling Station

TS

S (

mg

/L)

7/26

8/27

12/2


Summer-Winter

0.00

0.10

0.20

0.30

0.40

0.50

0.60

M1 M2 M3 M4 M5

Sampling Station

To

tal

Ph

osp

ho

rou

s (m

g/L

)

6/96/147/268/2712/2

Total Phosphorous in Water Samples from McConnell Springs Stormwater Quality Wetland Project

0

2000

4000

6000

8000

10000

M1 M2 M3 M4 M5

Sampling Station

E.

co

li (

CF

U/1

00

mL

) 3/264/224/266/96/147/268/2712/2

Bacterial Counts (E. coli) in Water Samples from McConnell Springs Stormwater Quality Wetland Project

0.00

0.20

0.40

0.60

0.80

1.00

1.20

Alu

min

ium

(m

g/L

)

03/26/10

0.00

0.20

0.40

0.60

0.80

1.00

1.20

M1 M2 M3 M4 M1 M2 M3 M4

Iro

n (

mg

/L)

Metal Concentrations in Water Samples from McConnell Springs Stormwater Quality Wetland Project

06/09/10

0.000

0.002

0.004

0.006

0.008

0.010

0.012

0.014

Co

pp

er (

mg

/L)

03/26/10

0.000

0.001

0.002

0.003

0.004

M1 M2 M3 M4 M1 M2 M3 M4

Nic

kel

(mg

/L)


06/09/10

<0.002 <0.002 <0.002

<0.005<0.005

0.000

1.000

2.000

3.000

4.000

5.000

6.000

Su

lfu

r (m

g/L

)

03/26/10

0.000

0.010

0.020

0.030

0.040

0.050

0.060

M1 M2 M3 M4 M1 M2 M3 M4

Zin

c (m

g/L

)


06/09/10


Gainesway Pond Retrofit Project


Gainesway Pond Retrofit Project

Sampling LocationsSampling Locations

GP1

GP2GP3

GP4

GP5

FLOW

Sampling at Gainesway Pond Stormwater Quality Project

• Sampling Dates: 4/2, 6/24, 8/26, 12/2

• pH 7.00 – 8.85 SU

• DO 1.12 – 12.68 mg/L

• Conductivity 328 – 1231 µS/cm

• Alkalinity 126 – 288 mg/L

• Hardness 166 – 445 mg/L

• Nitrate <1.00 – 7.50 mg/L

• Nitrite <0.05 – 0.17 mg/L

Gainesway Pond Water Quality Results for 2010

0

5

10

15

20

25

GP1 GP2 GP3 GP4 GP5

Sampling Station

TS

S (

mg

/L) 4/2

6/24

8/26

12/2

Total Suspended Solids (TSS) in Water Samples from Gainesway Pond Retrofit Project

0.00

0.02

0.04

0.06

0.08

0.10

0.12

0.14

0.16

0.18

GP1 GP2 GP3 GP4 GP5

Sampling Station

To

tal

Am

mo

nia

(m

g/L

)

4/26/248/2612/2

Total Ammonia in Water Samples from Gainesway Pond Retrofit Project

0.000.05

0.100.150.200.25

0.300.350.40

0.450.50

GP1 GP2 GP3 GP4 GP5

Sampling Station

To

tal

Ph

osp

ho

rou

s (m

g/L

)

4/26/248/2612/2

Total Phosphorous in Water Samples from Gainesway Pond Retrofit Project

CONCLUSIONSCONCLUSIONSMcConnell SpringsMcConnell Springs

● pH, dissolved oxygen, alkalinity and hardness pH, dissolved oxygen, alkalinity and hardness were within normal parameterswere within normal parameters

● Total suspended solids decreased through the Total suspended solids decreased through the stormwater facilitystormwater facility

● Ammonia levels decreased at sites M4 and M5Ammonia levels decreased at sites M4 and M5

● Nitrate and nitrite levels were low Nitrate and nitrite levels were low – – continue monitoringcontinue monitoring

● Total phosphorous and orthophosphates Total phosphorous and orthophosphates decreased over timedecreased over time

CONCLUSIONSCONCLUSIONSMcConnell SpringsMcConnell Springs

● Counts for Counts for E. coliE. coli and other coliforms were lowest and other coliforms were lowest at sites M4 and M5at sites M4 and M5

● Metals not detected in any of the sites: Metals not detected in any of the sites: Antimony, Beryllium, Cadmium, Chromium, Gold, Lead, Antimony, Beryllium, Cadmium, Chromium, Gold, Lead, Selenium, Silver, Thallium, Strontium, & VanadiumSelenium, Silver, Thallium, Strontium, & Vanadium

● Reductions of Aluminum, Copper, Iron, Nickel, Sulfur Reductions of Aluminum, Copper, Iron, Nickel, Sulfur & Zinc through the stormwater facility& Zinc through the stormwater facility

CONCLUSIONSCONCLUSIONSGainesway PondGainesway Pond

● pH, dissolved oxygen, alkalinity and hardness pH, dissolved oxygen, alkalinity and hardness were within normal parameterswere within normal parameters

● Total suspended solids were highest in theTotal suspended solids were highest in theponds (GP4 & GP5)ponds (GP4 & GP5)

● Spring/summer ammonia levels decreased Spring/summer ammonia levels decreased at GP4 & GP5, but Fall/Winter levels increasedat GP4 & GP5, but Fall/Winter levels increased

● Levels for total phosphorous, orthophosphates,Levels for total phosphorous, orthophosphates,nitrate and nitrite were similar in Spring/Summer, nitrate and nitrite were similar in Spring/Summer, but increased in Fall/Winterbut increased in Fall/Winter

– – Continue monitoringContinue monitoring

RECOMENDATIONSRECOMENDATIONS

Based on the preliminary data, it appears that bothBased on the preliminary data, it appears that bothstormwater structures are performing as expectedstormwater structures are performing as expected

Continue monitoring in 2011 (at least every other month)Continue monitoring in 2011 (at least every other month)

Significant for phosphorous, nitrates, nitrites, Significant for phosphorous, nitrates, nitrites, & metals which could be detrimental& metals which could be detrimental

Questions?Questions?

pollutant removal effectiveness of the mcconnell springs stormwater quality wetland pond and the...

Documents

construction slide

layout slide

carman slide

kdow slide

training of personnel

pond liner

water quality parameters

division of water quality