NJDEP has lowered the organic compound health value from 10,000 mg/kg to 4,800 mg/kg and has implemented a new ecological screening value. This change must be considered for all plans and reports submitted after March 17, 2009 or additional costs for resubmittal will result. Total Petroleum Hydrocarbon (418.1) analysis is no longer acceptable for No. 2 heating oil/diesel fuel assessments. Details below.
Any value exceeding the 4,800 mg/kg human health based criterion will require further evaluation to determine the need for additional delineation and potential remedial action.
For concentrations above 1,000 mg/kg, the current requirement to analyze for volatile organic compounds plus 10 tentatively identified compounds (VO+10) is being discontinued. In its place, the NJDEP will require that a base neutral compounds plus 15 tentatively identified compounds (BN+15) analysis of 25% of the samples exceeding the 1,000 mg/kg concentration threshold. Of particular concern are the base neutral compounds naphthalene and 2-methylnaphthalene.
Analysis methods acceptable by the Department for no. 2 fuel oil and/or diesel fuel oil are SW-846 Method 8015B – Diesel Range Organics and the Department’s OQA-QAM-025, and/or their latest versions or equivalents.
Ecological Based Screening Value:
A new ecological screening value of 1,700 mg/kg is applicable to all petroleum hydrocarbon discharges if a sensitive environmental receptor is potentially impacted, as determined by a baseline ecological evaluation. In this case, an ecological risk assessment will need to be conducted for the purpose of establishing a site-specific ecological criterion. The maximum allowable site-specific ecological criterion is 4,800 mg/kg.
Currently under development at the NJDEP is a site-specific approach using an Extractable Petroleum Hydrocarbon (EPH) method, which will be used to replace the 4,800 mg/kg value. The public and regulated community will be notified via the Department’s website when the EPH Method becomes available and the site-specific approach implemented.