N.J. Admin. Code § 7:26E-1.14

Current through Register Vol. 56, No. 21, November 4, 2024

Section 7:26E-1.14 - Receptor evaluation-ground water

(a) The person responsible for conducting the remediation shall conduct a receptor evaluation of ground water when any contaminant is detected in ground water in excess of any Class II ground water quality standard, as follows:

1. Within 90 days after ground water contamination is detected, conduct a well search to identify wells that may be impacted by contamination from the site as follows:

i. Conduct a file search of all available Department, county and local records and identify all wells located within one-half mile of each point of ground water contamination, and all irrigation, industrial wells, and wells with water allocation permits located within one mile of each point of ground water contamination;

ii. If there are any potable or irrigation wells within one-half mile of each point of ground water contamination, conduct a door-to-door survey to determine the existence of any unpermitted potable or irrigation wells within a 500-foot radius of each known point of ground water contamination when the ground water flow direction is not known and within 250 feet up gradient, 500 feet side gradient and 500 feet down gradient and of each known point of ground water contamination when the ground water flow direction is known;

iii. For each well, other than a monitoring well, that is to be sampled pursuant to (a)2ii through iv below, identify the type (potable, irrigation, industrial, etc.), status (that is, active, inactive, properly decommissioned pursuant to N.J.A.C. 7:9D), and the construction of each well;

iv. Generate a map of all well locations, except monitoring wells, borings, and other non-pumping wells, and document well information on a spreadsheet available on the Department's web site at www.nj.gov/dep/srp/srra/forms;

v. Document all sources used in conducting the well search, including the names of any agency that was unable to provide the information requested; and

vi. For each point of ground water contamination, determine if the ground water contamination is located within a well head protection area, available on the Department's website at http://www.state.nj.us/dep/njgs/geodata;

2. Within 120 days after ground water contamination is detected at the site above any Class II ground water quality standard, the person responsible for conducting the remediation shall:

i. Notify the Department, on a form and spreadsheet found on the Department's website at www.nj.gov/dep/srp/srra/forms,, at the time that the person contacts property owners or tenants for the purpose of gaining access to conduct sampling, but no later than seven days prior to the scheduled sampling date to conduct potable well sampling. Information to be supplied by filling out the form and spreadsheet includes:

(1) Site identification information;

(2) A description of the planned sampling activities, including sampling location and date(s) sampling was conducted;

(3) The name of the responsible entity and a certification statement; and

(4) The name of the licensed site remediation professional and a certification statement;

ii. Sample each potable well identified by the well search that is located within 500 feet of any point of ground water contamination if ground water flow direction is not known, or if ground water flow direction is known, limit sampling to wells 250 feet up gradient, 500 feet side gradient and 500 feet down gradient from any point of ground water contamination;

iii. Sample each irrigation well that may be utilized for potable purposes and is identified within 500 feet of any point of ground water contamination if ground water flow direction is not known, or if ground water flow direction is known, limit sampling to wells 250 feet up gradient, 500 feet side gradient and 500 feet down gradient from any point of ground water contamination identified by the well search when there are concerns about exposure or when information about the characteristics of the plume is needed; and

iv. When ground water contamination is located within a Tier I well head protection area, sample each community and non-community supply well within the Tier 1 well head protection area, unless pre-treatment analytical results for the chemicals of concern in ground water are available from sampling completed within the last three months; and

3. Every two years after the first trigger for a well search pursuant to (a)1 above, update the well search pursuant to (a)1i, to identify if new wells have been installed.

(b) If any contaminant is identified in excess of the minimum ground water remediation standards at N.J.A.C. 7:26D-2.2(a)1, except for any ground water remediation standard derived pursuant to N.J.A.C. 7:9C-1.7(c)6, in any potable or irrigation well that may be utilized for potable purposes, then the person responsible for conducting the remediation shall conduct all actions pursuant to N.J.A.C. 7:26E-1.11, according to the schedule in that section.

(c) If no contaminant is detected in any potable well sample in excess of any Class II ground water quality standard, then the person responsible for conducting the remediation shall, within 30 days after receipt of the analytical results from the laboratory:

1. Submit all analytical results to the Department with full laboratory data deliverables and a form and spreadsheet found on the Department's website at www.nj.gov/dep/srp/srra/forms;;

2. Provide a copy and explanation of all ground water analytical results to each property owner, occupant (if applicable), and designated local health department of the analytical results; and

3. Provide the Department with a copy of the documentation required by (c)2 above. The documentation shall be submitted pursuant to 7:26E-1.6(a).

N.J. Admin. Code § 7:26E-1.14

Amended by 50 N.J.R. 1715(b), effective 8/6/2018