EPA Guidance On Borehole Construction & Wellhead Protection Ms. - - PowerPoint PPT Presentation

▶
epa guidance on borehole construction wellhead protection
SMART_READER_LITE
LIVE PREVIEW

EPA Guidance On Borehole Construction & Wellhead Protection Ms. - - PowerPoint PPT Presentation

Mar 26, 2024 193 likes •452 views

EPA Guidance On Borehole Construction & Wellhead Protection Ms. Criona Doyle Office of Environmental Enforcement Environmental Protection Agency 19 th April 2018. 1 Introduction Why important ? Guidance documents Groundwater

slide-1
SLIDE 1

1

EPA Guidance On Borehole Construction & Wellhead Protection

  • Ms. Criona Doyle

Office of Environmental Enforcement Environmental Protection Agency 19th April 2018.

slide-2
SLIDE 2

Introduction

  • Why important ?
  • Guidance documents
  • Groundwater flow and potential contamination
  • Critical factors in design & construction
  • Further information
slide-3
SLIDE 3

Why Important ?

slide-4
SLIDE 4

Why important ?

  • 170,000 private wells
  • Estimated up to 30% have E. coli
  • Microbial pathogens e.g. E. coli cause gastrointestinal disease
  • Increase in VTEC in recent years
  • VTEC cases 4 times more likely where private well water

consumed

slide-5
SLIDE 5

VTEC Figures

slide-6
SLIDE 6

Guidance Documents

slide-7
SLIDE 7

Guidance Documents

  • IGI Water Well Guidelines (2007) – 3 booklets

http://igi.ie/publications/guidelines/

  • EPA Advice Note 14: Borehole Construction & Wellhead

Protection (2013) https://www.epa.ie/pubs/advice/drinkingwater/EPA_DrinkingW ater_AdviceNoteNo14b_web.pdf

slide-8
SLIDE 8

Groundwater Flow

slide-9
SLIDE 9

9

slide-10
SLIDE 10

10

slide-11
SLIDE 11

11

slide-12
SLIDE 12

Checklist

  • Surface water ingress ?
  • Well Cap ?
  • Well Grouted ?
  • Borehole log ?
  • Water tested ?
slide-13
SLIDE 13

Design – IGI Guidelines

  • Recommended distances to likely pollution sources
  • Casing materials
  • Minimum depth of casing & grout
  • Headworks details & concrete pad
  • Pump house
slide-14
SLIDE 14

Installation of Borehole

  • Important Elements
  • Pump Chamber
  • Grouting
  • Pump Position
  • Well Head Completion
slide-15
SLIDE 15
slide-16
SLIDE 16

Grouting

slide-17
SLIDE 17
slide-18
SLIDE 18
slide-19
SLIDE 19

Wellhead Protection

  • Insert picture of
slide-20
SLIDE 20

Well Head Protection

slide-21
SLIDE 21

Well Head Protection

AIM - PROTECT PUBLIC HEALTH

slide-22
SLIDE 22

Further Information

  • EPA Website – Householder Information on Private Wells

http://www.epa.ie/water/dw/hhinfo/

slide-23
SLIDE 23

EPA Infographic

  • Insert text
slide-24
SLIDE 24

Web App & Animation

  • Insert text
slide-25
SLIDE 25

How Can You Help ?

  • http://www.epa.ie/pubs/a

dvice/drinkingwater/SS%2 0Wells%20Web.pdf