Total Petroleum Hydrocarbons, Reactive Cyanide, Reactive Sulfide, Ignitability, and Corrosivity
This Fact Sheet is presented by the U. S. Environmental Protection Agency, Region III (EPA) to assist in the selection of analytical parameters and the associated Quality Assurance and Quality Control (QA/QC) procedures to be utilized in Phase II Environmental Assessments under the U.S. Environmental Protection Agency (EPA) Brownfields initiative. This fact sheet is presented for informational purposes only, and should not be construed as a federal policy or directive. The Brownfields Coordinator for this region may be reached at 215-814-5000.
Please note that the methods listed below are EPA approved and the most commonly used by EPA and their contractors. However, they are not the only methods for the analysis of total petroleum hydrocarbons, reactive cyanide, reactive sulfide, ignitability, or corrosivity. In addition, these are not drinking water test methods.
|Petroleum Hydrocarbons||418.1 (1)|
|Reactive Cyanide||SW-846 220.127.116.11 (2)|
|Reactive Sulfide||SW-846 18.104.22.168 (2)|
|Ignitability||SW-846 7.1 or 1010, 1020 (2)|
|Corrosivity||SW-846 7.2 or 9040, 9041, 9045 (2)|
- U.S. Environmental Protection Agency (EPA). 1983 Test Methods for the Chemical Analysis of Water and Wastes. Washington, D.C. March.
- EPA. 1986. Test Methods for Evaluating Solid Waste. SW-846. Washington, D.C. September.
Listed below are the EPA-recommended preservation and holding times as well as suggested glassware.
|Soil/Sediment||8-oz soil jar||1 8-oz jar||ice to 4º C||28 days for TPHC|
|Waste||8-oz wide mouth jar||1 8-oz jar||none required
|none (try not to exceed 28 days for cyanide)|
MINIMUM LABORATORY QUALITY CONTROL MEASURES
The laboratory should have Standard Operating Procedures available for review for the total petroleum hydrocarbons, reactive cyanide, reactive sulfide, ignitability, and corrosivity, and for all associated methods needed to complete these analyses, such as total solids, instrument maintenance, sample handling, and sample documentation procedures. In addition, the laboratory should have a Laboratory Quality Assurance/Quality Control Statement available for review which includes all key personnel qualifications.
|QC TYPE||FREQUENCY OF ANALYSIS||ACCEPTABLE LIMITS|
|Initial Calibration||Prior to analysis of samples (minimum three concentration levels for every compound and an instrument blank)||Correlation Coefficient for all analyses should be >0.995
Blank concentration should not exceed twice the instrument detection limit
|Continuing Calibration||Once per 10 samples (mid-level standard containing all compounds) and a continuing calibration blank||Within 10% of true value
Bank concentration should not exceed twice the instrument detection limit
|Method Blank (does not apply to ignitability and corrosivity)||Once per extraction set||See method for allowable limits|
|Matrix Spikes (TPHC, reactive cyanide and reactive sulfide only)||One per set or per 20 samples||75-125%|
|Duplicates||One per set or per 20 samples|
MINIMUM DATA PACKAGE REQUIREMENTS
- Sample results in a tabular form (if soil or sediment) reported on a dry weight basis.
- Report % moisture or % solids for all soil and sediment samples.
- Report sample volumes or weights, as well as any dilution factors, for each sample analysis.
- Returned copy of the chain of custody form sent with the samples with laboratory receipt acknowledgment, and the internal or laboratory chain of custody forms.
- Method blank results.
- Initial and continuing calibration data summary forms.
- Matrix spike recovery tables, including laboratory recovery QC limits, and duplicate relative percent difference QC limits.
- Date samples were analyzed, on a separate sheet, or results page.
- Optional: sample, standard and blank instrument printouts, instrument run logs, digestion logs, and total solids logs.
Note: The optional QC must be maintained by laboratory for at least one year for possible future QC audits.