What is a PCR?
Quality Assurance is important to all reporters in assuring that the data reported is the data received, and that it demonstrates compliance with permit requirements. For this reason, as of February 2008 we reinstated our Quality Assurance program under a new name. If there are what appear to be violations of your permit detected during an electronic compliance review of your eDMR you will receive an email and PCR the day following your submission. The advantage of using eDMR and PCR is the rapid response combined with the opportunity to call up your reports to see what is actually on file. The letter offers a variety of options for resolving the issues identified in the PCR. You will still be able to get direct assistance if you are not able to resolve the issues by correcting and resubmitting you eDMR.
Who gets a PCR?
If your submittal has NO compliance issues, you will NOT get a PCR. Only those DMRs which have some sort of compliance related issue will get the next day email.
What do I do when I get a PCR?
The action needed will depend on the nature of the compliance issue defined in the PCR you received. Follow the guidance listed on the PCR to remedy the specific issue that you have....available options generally include:
- Perform a "revision" if you left data out. (Please see the eDMR Training and User Guide located on the eDMR main page for info on revisions)
- Contact your District Office permit representative designated on the letter.
- Contact the Permits Compliance Unit representative designated on the letter.
Common Compliance Errors
1. The date for the potential violation does not match the dates for which I submitted data.
The EPA weekly calendar is based on days 1-7, 8-14, 15-21 & 22-28. To accommodate weeks that have multiple samples that require comparison of the average to the limit(s), the average is taken as having occurred on the first day of the week. A single sample in the week is handled as an average of 1 and also reported on the first day of the week...
Weekly Frequency Sampling Flow Chart
2. I did not get credit for data submitted on days 28 -31
The software used to calculate compliance cannot compute partial weeks so days 28-31 are not averaged for parameters with weekly limits. Data on those days will be left out of all but monthly or daily monitoring requirements.
3. The limits on the PCR do not match the limit(s) on my permit.
Look carefully at the Type of potential violation. If the Type is Freq then the Permit Limit will be the number of sample results expected in the Limit Type. In the following example there was a sample result expected each day of the month but none was received on 1/31/08.
There is often confusion between concentration and load limits. Verify whether the limits are for concentration or loading and check these against your permit.
4. The Reported Value does not match the values I reported.
Daily and weekly samples may be required several times in the monitoring period. The sample results for the period are averaged for comparison against the limit. The averaged value will appear as the reported value.
Loading values are calculated by the PCR software as the product of the flow converted to liters (3.785 liters/gallon) times the concentration converted to kilogram/liter (1mg/l * 1e-6 kg/mg = 1e-6 kg/l) . Loading is calculated only for those days having flow and concentration. Average loading is the sum of the loading calculations divided by the number of days for which loading can be calculated.