Information on TPHC by 418.1 |
The NJ Site Remediation Program (SRP) will no longer be accepting TPHC analyses by 418.1 after September 30, 2007. Clients will be required to use either DRO by 8015B (if the contamination is known) or QAM025 rev 6. (if the contamination is unknown). http://www.state.nj.us/dep/srp/guidance/tph/
"As a result, the SRP will not accept Method 418.1 data generated from the analysis of all matrices sampled after September 30, 2007 including those instances where Method 418.1 was cited in an approved sampling plan.
For all samples taken after September 30, 2007 (for data submitted to the SRP) there are two methods for which certification exists that would be acceptable alternatives to Method 418.1 and are to be used for the analysis of samples for petroleum products: the Diesel Range Organics (DRO) option under USEPA SW-846 Method 8015B and the NJDEP Method OQA-QAM-025, Rev.6.
The methods are used under the following circumstances. When petroleum product contamination at a site is known to be diesel fuel/home heating oil/#2 fuel oil, the DRO option under USEPA Method 8015B or OQA-QAM-025, Rev.6 is to be used.
When the identity of the petroleum product contamination at a site is not known, OQA-QAM-025, Rev.6 must be used.
For all analyses, data deliverables, at a minimum, are to be consistent with N.J.A.C. 7:26E, Appendix A, IV, Reduced Laboratory Data Deliverables-Non-USEPA/CLP Methods, Sections 1 and 6.
When petroleum product contamination at a site is known to be gasoline, samples are to be analyzed pursuant to N.J.A.C.7:26E, Subchapter 2. (http://www.state.nj.us/dep/srp/regs/techrule/techrl02.pdf - see Table 2-1) "
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