WI Environmental Is Your Remediation Solution


Stormwater samples taken from CSR Marine in Seattle, Washington on March 29th, 2010 were put into containers given to WI Environmental by ALS labs in Everett, Washington. One sample was the raw stormwater, while the other was stormwater that was collected and then treated with WI Environmental’s XR-88TM.

The samples are preserved with nitric acid to keep the heavy metals in the solution, so they don’t adhere to the walls of the container. Protocols for collecting and preserving the sample were followed, according to ALS.

The samples were then given to a lab representative that same day at 2:30pm for testing of heavy metals – including copper, lead and zinc. Those times and dates are to verify that the sample went straight from WIE to the lab, with no tampering between delivery and reception.

ALS is a lab accredited by the State of Washington, and must pass ‘blind samples’ twice a year to maintain its accreditation. The lab also maintains tight quality control on an internal basis to ensure that instruments are properly calibrated and that no cross- contamination occurs.

ALS uses EPA specified testing methods for stormwater, using ICP-MS, (Inductively coupled plasma mass spectrometry) widely acknowledged as the premier technology for trace metals analysis. The samples were tested March 30th, 2010.

In the first sample, before treatment with WIE’s XR-88TM, the raw CSR stormwater sample showed the following:

  • 2,700 parts per billion of Copper
  • 340 parts per billion of Lead
  • 850 parts per billion of Zinc

In the CSR stormwater sample after treatment with XR-88TM, lab results showed the following:

  • 5.6 parts per billion of Copper
  • Non-detectable amount of Lead
  • Non-detectable amount of Zinc

Under state Department of Ecology permit requirements for boatyards, current benchmarks for copper are 38 parts per billion, while the lead limit is 55.6 parts per billion. There is no limit or benchmark for zinc.

The DOE is, as of June 30th, 2010, in the process of changing the requirements. The daily benchmark for copper would be 147 parts per billion, with a seasonal average (5 samples taken between September to May) of 50 parts per billion. The proposed limit for lead would be 185 parts per billion, and for zinc, the daily benchmark would be 90 parts per billion with a seasonal average of 85 parts per billion.