PCP Environment Surveillance - Dewatering

• EPA Environmental Guidelines for Major Construction Sites (Publication 480)
  

• Document No.

• Audit Title

• Client / Site (displayed on first page)

• Conducted on

  Date

• Prepared by

More than one auditor?

• Additional auditors

• Frequency: Prior to and during dewatering events

• Has flocculent been added at required dosage and appropriate settlement achieved (+24hrs)?

  Yes

  No

  N/A

• ACTION: Determine contractor management requirements

• Parameters:
  
  Hourly: Turbidity below 30 NTU
  Once prior: pH 6.4 - 7.7
  Once prior: DO 85 - 110%
  Once prior: Conductivity 500 us/cm

• Prior to pumping and during pumping; have parameters been measured and recorded?

  Yes

  No

  N/A

• ACTION: Determine contractor management requirements

• Is contractor constantly supervising the pump during pumping?

  Yes

  No

  N/A

• ACTION: Pumping to cease if requirement not met

• Is the pump intake as close to the water surface as possible?

  Yes

  No

  N/A

• ACTION: Pumping to cease immediately

• If water colour changes; has contractor turned off pump immediately and taken additional readings?

  Yes

  No

  N/A

• ACTION: Pumping to cease immediately

• Further observations

• Add media

  Media

• Signed PoMC representative:

  Sign

• Signed principal contractor representative (optional):

  Sign