Pollutant Removal Effectiveness of the Mc Connell Springs

Pollutant Removal Effectiveness of the Mc. Connell 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

The “pond” before construction

Design Firm: CDP Engineers Layout

Mc. Connell Springs Stormwater Quality Wetland Pond

The site before construction

Mc. Connell Springs Design Firm: Carman Welcome Center

Layout

A pond liner installed The site today Boardwalk taking shape

Pollutant Removal Results Mc. Connell Springs Stormwater Quality Wetland Pond

Locating Sampling Sites and Training of Personnel

Sampling Locations M 4 M 2 M 5 M 3 M 1

Sampling at Mc. Connell Springs Stormwater Quality Wetland Project

Water Quality Parameters Measured at Mc. Connell Springs Stormwater Quality Wetland Project • • • Temperature p. H 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

7/26 8/27 4/22 3/26 4/26 6/9 12/2 6/14 Rainfall Levels Recorded at the Bluegrass Airport for 2010

Mc. Connell Springs Water Quality Results for 2010 • Nine Sampling Dates • p. H • DO • Conductivity • Alkalinity • Hardness • Nitrate • Nitrite 7. 00 – 9. 75 SU 3. 03 – 8. 40 mg/L 81 – 1614 µS/cm 45 – 210 mg/L 65 – 1650 mg/L <0. 01 – 5. 86 mg/L <0. 05 – 0. 52 mg/L

Total Suspended Solids (TSS) in Water Samples from Mc. Connell Springs Stormwater Quality Wetland Project Year 2010

Total Suspended Solids (TSS) in Water Samples from Mc. Connell Springs Stormwater Quality Wetland Project Spring-Summer

Total Suspended Solids (TSS) in Water Samples from Mc. Connell Springs Stormwater Quality Wetland Project Summer-Winter

Total Phosphorous in Water Samples from Mc. Connell Springs Stormwater Quality Wetland Project

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

Metal Concentrations in Water Samples from Mc. Connell Springs Stormwater Quality Wetland Project 03/26/10 06/09/10

03/26/10 <0. 005 06/09/10 <0. 002 <0. 005 Metal Concentrations in Water Samples from Mc. Connell Springs Stormwater Quality Wetland Project

Metal Concentrations in Water Samples from Mc. Connell Springs Stormwater Quality Wetland Project 03/26/10 06/09/10

Pollutant Removal Results Gainesway Pond Retrofit Project

Sampling Locations GP 5 GP 4 FLO GP 3 W GP 2 GP 1

Sampling at Gainesway Pond Stormwater Quality Project

Gainesway Pond Water Quality Results for 2010 • Sampling Dates: 4/2, 6/24, 8/26, 12/2 • p. H • DO • Conductivity • Alkalinity • Hardness • Nitrate • Nitrite 7. 00 – 8. 85 SU 1. 12 – 12. 68 mg/L 328 – 1231 µS/cm 126 – 288 mg/L 166 – 445 mg/L <1. 00 – 7. 50 mg/L <0. 05 – 0. 17 mg/L

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

Total Ammonia in Water Samples from Gainesway Pond Retrofit Project

Total Phosphorous in Water Samples from Gainesway Pond Retrofit Project

CONCLUSIONS Mc. Connell Springs ● p. H, dissolved oxygen, alkalinity and hardness were within normal parameters ● Total suspended solids decreased through the stormwater facility ● ● Ammonia levels decreased at sites M 4 and M 5 ● Total phosphorous and orthophosphates decreased over time Nitrate and nitrite levels were low – continue monitoring

CONCLUSIONS Mc. Connell Springs ● Counts for E. coli and other coliforms were lowest at sites M 4 and M 5 ● Metals not detected in any of the sites: Antimony, Beryllium, Cadmium, Chromium, Gold, Lead, Selenium, Silver, Thallium, Strontium, & Vanadium ● Reductions of Aluminum, Copper, Iron, Nickel, Sulfur & Zinc through the stormwater facility

CONCLUSIONS Gainesway Pond ● p. H, dissolved oxygen, alkalinity and hardness were within normal parameters ● Total suspended solids were highest in the ponds (GP 4 & GP 5) ● Spring/summer ammonia levels decreased at GP 4 & GP 5, but Fall/Winter levels increased ● Levels for total phosphorous, orthophosphates, nitrate and nitrite were similar in Spring/Summer, but increased in Fall/Winter – Continue monitoring

RECOMENDATIONS u Based on the preliminary data, it appears that both stormwater structures are performing as expected u Continue monitoring in 2011 (at least every other month) Significant for phosphorous, nitrates, nitrites, & metals which could be detrimental

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