Title

Identifying Biogeochemical Processes Beneath Stormwater Infiltration Ponds In Support Of A New Best Management Practice For Groundwater Protection

Keywords

Best management practice; Biogeochemistry; Groundwater protection; Natural attenuation; Stormwater infiltration

Abstract

When applying a stormwater infiltration pond best management practice (BMP) for protecting the quality of underlying groundwater, a common constituent of concern is nitrate. Two stormwater infiltration ponds, the SO and HT ponds, in central Florida, USA, were monitored. A temporal succession of biogeochemical processes was identified beneath the SO pond, including oxygen reduction, denitrification, manganese and iron reduction, and methanogenesis. In contrast, aerobic conditions persisted beneath the HT pond, resulting in nitrate leaching into groundwater. Biogeochemical differences are likely related to soil textural and hydraulic properties that control surface/subsurface oxygen exchange. A new infiltration BMP was developed and a full-scale application was implemented for the HT pond. Preliminary results indicate reductions in nitrate concentration exceeding 50% in soil water and shallow groundwater beneath the HT pond. Copyright © 2011 IAHS Press.

Publication Date

12-1-2011

Publication Title

IAHS-AISH Publication

Volume

342

Number of Pages

437-440

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

84860600474 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84860600474

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