"Construction Dewatering General Permit - Daily Log" - Montana

Construction Dewatering General Permit - Daily Log is a legal document that was released by the Montana Department of Environmental Quality - a government authority operating within Montana.

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Download "Construction Dewatering General Permit - Daily Log" - Montana

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Montana Department of Environmental Quality – Water Protection Bureau
Construction Dewatering General Permit
Daily Log
Construction dewatering activities authorized under the Construction Dewatering General Permit
(CDGP, MTG070000) must be monitored in accordance with the CDGP. The permittee is
responsible for recording required data on a daily log -- either on the attached form (“Daily
Log”) or a site-specific log that includes all the data required by the CDGP.
Records, including the daily log, must be maintained for at least three (3) years and be available
for inspection by the Montana Department of Environmental Quality (DEQ). Permittees do not
need to submit the logs to the DEQ unless requested.
In addition to the daily log, the permittee must submit completed Discharge Monitoring Reports
th
(DMRs) to DEQ by the 28
of the month following each reporting month, as stated in the
CDGP. Monthly DMRs must be submitted until the Construction Dewatering authorization
is terminated whether or not there is a discharge.
Once dewatering is complete and the permittee determines that authorization to discharge under
the CDGP is no longer required, they must submit a request for termination to DEQ. Based on
this request, DEQ will terminate the permit authorization and the corresponding requirement to
complete the daily log and monthly DMRs.
Specific Instructions for Daily Log:
If no dewatering discharge occurred for any period of record, indicate “no discharge” on the
daily log.
Footnotes from Daily Log form:
1) Indicate yes for any visual observations of either elevated turbidity or an oil sheen. Visual
observation of either parameter triggers the need for the permittee to cease discharging, take
a grab sample for analysis, investigate the cause, and address the problem.
2) If any turbidity or oil & grease off-site analysis is performed, the permittee is required to
maintain records of the date the analysis was performed, the name of the individual who
performed the analysis, and what 40 CFR Part 136 analytical technique/method was used
[see ARM 17.30.1342(10)(c).] For instance, EPA Method 180.2 is an acceptable method for
turbidity, and EPA Method 1664A is an acceptable analysis for oil & grease.
3)
For any visual observations or numeric turbidity exceedances, the permittee must follow their
corrective action plan and include a summary of observations and follow-up actions on
additional pages.
Montana Department of Environmental Quality – Water Protection Bureau
Construction Dewatering General Permit
Daily Log
Construction dewatering activities authorized under the Construction Dewatering General Permit
(CDGP, MTG070000) must be monitored in accordance with the CDGP. The permittee is
responsible for recording required data on a daily log -- either on the attached form (“Daily
Log”) or a site-specific log that includes all the data required by the CDGP.
Records, including the daily log, must be maintained for at least three (3) years and be available
for inspection by the Montana Department of Environmental Quality (DEQ). Permittees do not
need to submit the logs to the DEQ unless requested.
In addition to the daily log, the permittee must submit completed Discharge Monitoring Reports
th
(DMRs) to DEQ by the 28
of the month following each reporting month, as stated in the
CDGP. Monthly DMRs must be submitted until the Construction Dewatering authorization
is terminated whether or not there is a discharge.
Once dewatering is complete and the permittee determines that authorization to discharge under
the CDGP is no longer required, they must submit a request for termination to DEQ. Based on
this request, DEQ will terminate the permit authorization and the corresponding requirement to
complete the daily log and monthly DMRs.
Specific Instructions for Daily Log:
If no dewatering discharge occurred for any period of record, indicate “no discharge” on the
daily log.
Footnotes from Daily Log form:
1) Indicate yes for any visual observations of either elevated turbidity or an oil sheen. Visual
observation of either parameter triggers the need for the permittee to cease discharging, take
a grab sample for analysis, investigate the cause, and address the problem.
2) If any turbidity or oil & grease off-site analysis is performed, the permittee is required to
maintain records of the date the analysis was performed, the name of the individual who
performed the analysis, and what 40 CFR Part 136 analytical technique/method was used
[see ARM 17.30.1342(10)(c).] For instance, EPA Method 180.2 is an acceptable method for
turbidity, and EPA Method 1664A is an acceptable analysis for oil & grease.
3)
For any visual observations or numeric turbidity exceedances, the permittee must follow their
corrective action plan and include a summary of observations and follow-up actions on
additional pages.
Construction Dewatering General Permit - Daily Log
Name of Permittee:________________________________________________ Name of Project:__________________________________________________
MPDES Permit Number: MTG070__________ Outfall Number____________ Month ___________
Year ____________
(one form must be filled out per permitted outfall)
Day of Month/
Name / Initials
Discharge
Discharge
Oil & Grease
BMP Failures
Corrective Action Report
(2)
(3)
(1)
Time
Turbidity High
?
Turbidity
Sheen
Observed?
Attached?
(1)
(Visual - Y/N)
(NTU)
(Visual - Y/N)
(Visual - Y/N)
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