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Findings & Recommendations for the Remediation of Historic Pesticide Contamination - Final Report March 1999
[ToC] Table of Contents

Addendum 5

Site Investigation Sampling Methods

The following sampling methods were developed by the New Jersey Department of Environmental Protection and should be used state-wide so that consistent and reliable data are generated. Site investigation sampling methods are to be used to investigate current or former farm fields and orchards and should not be used to evaluate other potential areas of concern which may be present, such as chemical storage and mixing areas, underground storage tanks and waste disposal areas. The goal of site investigation sampling is to determine if contamination is present at levels exceeding the Departmentís soil cleanup criteria.

If contamination is detected, additional remedial investigation sampling may be necessary to determine the vertical and horizontal distribution of the contamination which is needed to develop a specific remediation plan. The Department should be contacted to oversee additional sampling and remedial action.

Sampling should be conducted pursuant to the Departmentís Field Sampling Procedures Manual and analysis conducted by certified laboratories pursuant to the Technical Requirements for Site Remediation, N.J.A.C. 7:26E-2.

Site Investigation Sampling

Sample location and depth:
Discrete samples should be taken at a depth of 0-6" within farm fields. If extent of former fields cannot be determined, the entire property should be sampled.

Sample frequency:
Sampling frequency is dependent on the size of the site:

Sites<1-10 acres, 1 sample for every 2 acres with a minimum of 2 samples; then sites>10 acres add 1 sample for every 5 acres. A reduced sampling frequency may be appropriate for very large sites.

Analytical Parameters
All samples should be analyzed for arsenic, lead and a pesticide scan (SW 846-8081A). The pesticide scan includes a total of 20 compounds including DDT, DDD, DDE, dieldrin and chlordane (see pesticide analyte list in Addendum 2). All analytical results obtained from the pesticide analysis should be provided to the reviewing agency.

 

   
 
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