Monitoring and Reporting (DMRs) for the Sand and Gravel General Permit

Gravel processing site

The Sand and Gravel General Permit limits pollutants in discharges and requires monitoring of discharges to measure pollutant levels. Discharge Monitoring Reports are referred to as DMRs.

DMRs for Inactive Sites

Per the 2016 Sand & Gravel General Permit most inactive sites are not required to submit quarterly DMRs.

Submitting DMRs

Permittees must submit DMRs electronically, online using Ecology’s Water Quality Permitting Portal (WQWebDMR) – Discharge Monitoring Report (DMR) application, unless the Permittee applies for and Ecology approves an Electronic Reporting Waiver. Permittees that have received an Electronic Reporting Waiver from Ecology must submit their paper DMRs to the appropriate regional Ecology office. There is help available inside WQWebDMR to guide you through the DMR submittal process. You may also want to refer to the WQWebDMR User Guide: Electronic Discharge Monitoring Reports.

DMRs for the Sand and Gravel General Permit are due quarterly per the dates in the table below.
Discharge Monitoring Period: DMR Due Dates:
October, November, December January 30
January, February, March April 30
April, May, June July 30
July, August, September October 30

Help for Oil Sheen Reporting

The permit requires monitoring for oil sheen on a daily basis when equipment operates and runoff occurs. This means that during the rainy season you may need to report for every day of the month. The online DMR form doesn't have a monthly No Oil Sheen detected button. This can make it time consuming to fill out the form for every day of the month even when you haven't observed any oil sheen. In order to simplify this reporting you can use two different methods: adding a note to your reporting or using the Excel import feature.

Adding a Note

If you did not observe any oil sheen for the entire monitoring period. You can include a note at the monitoring point level that states that you monitored throughout the entire month for the presence of oil sheen and that no oil sheen was observed. Please include each month within the monitoring quarter.

For example, in the DMR below you would enter in the last day of the month for all three months in the quarter (1st red box in the picture below). Then in the Oil & Grease column next to the the Yes/No entry you would click on the box to add a note.

Discharge Monitoring Report screen shot

The note box appears in the picture below. Add in your observation of no sheen for the entire month. Please leave the reporting code blank. Do not add a no discharge reporting code.

Monitoring Note screen shot

Using the Excel Import Feature

Another way to input the oil and grease data quickly is to use the "Paste Data from Excel" option. This allows you to use an Excel spreadsheet to insert your date and a value of "0" for no Oil and Grease observed. Then you can fill down the dates and "0" value. You can copy and paste this information into your DMR and upload it. Follow the instructions on the Paste DMR Data From a Spreadsheet screen.

Monitoring Note screen shot

Help for Reporting No Discharge

Even though DMRs are due quarterly, you may need to monitor on a quarterly, monthly, or twice-monthly basis. In addition, the online DMR form doesn’t have a monthly No Discharge button. This can make it hard to figure out how to fill out the form without accidentally creating violations. Below is guidance for reporting when there was no discharge. Note that "No Discharge" means there was no discharge to sample during the entire reporting period. Your monitoring program must be flexible enough to take into account there may not be sufficient water available for sampling on any given day. Providing alternative sampling times, perhaps based on the occurrence of rainfall events onsite, is a good way to avoid this shortcoming in a plan. Sampling practices must be flexible enough to take advantage of storm events when they happen.

Groundwater Discharges

If you have a ground water discharge, you may be required to report either monthly or quarterly, depending on the activities that discharge to the ground.

  1. If you are only required to monitor on a quarterly basis, either:
    1. Enter your monitoring data
    2. Or, choose “No Discharge” from the DMR Reporting Codes drop-down.
  2. no discharge screen shot
  3. If you are required to monitor on a monthly basis, and your facility was active and discharged water during 1 or 2 months of the quarter, but not all three, you will have to create one entry per month that you did not discharge. For example, if during Q2 your facility discharged only in June (not in April or May), you would create entries for 4/1 and 5/1 and mark all the values for both entries as “C” (No Discharge). You would put in your monitored values for the entry in June.
    sampling discharge screen shot

Surface Water Discharges

If you have a surface water discharge, you need to enter at least two monitoring events for every month – because all surface water discharges require twice-monthly turbidity monitoring.

  1. If your facility is discharging water every month, then take at least two samples every month, and record them in your DMR.
    sampling discharge screen shot
  2. If your facility doesn't discharge at all, simply mark "No discharge" for your entire DMR.
    no discharge screen shot
  3. If your have more than one outfall and one of them did discharge, you can mark "No Discharge" for each Monitoring Point that didn't discharge.
    no discharge screen shot
  4. If your facility discharged water during 1 or 2 months of the quarter, but not all three, you will have to create two entries per month that you did not discharge. For example, if during Q2 your facility discharged only in June (not in April or May), you would create entries for 4/1, 4/15, 5/1, and 5/15, and mark all the values for all four entries as “C” (No Discharge). You would put in your monitored values for the entries in June.
    sampling discharge multiple entries screen shot