2015 Daily Log - Montana Department Of Environmental Quality printable pdf download

2015 Daily Log - Montana Department Of Environmental Quality

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

(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.

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.

2015 Daily Log - Montana Department Of Environmental Quality