N.H. Admin. Code § Env-Dw 305.35

Current through Register No. 50, December 12, 2024

Section Env-Dw 305.35 - Procedure and Criteria for Approval of Replacement Wells

(a) A small CWS proposing to replace any active small production well shall submit a request to the department that contains the following information:

(1) The name, mailing address, email address, and daytime telephone number of the supplier of water and the supplier's authorized representative;

(2) The name and PWS identifier of the CWS;

(3) The source capacity requirements for the system established during design approval in accordance with Env-Dw 405;

(4) Such explanations and information as are needed to demonstrate that the criteria of Env-Dw 305.34(b) are met;

(5) A site plan and description of all land uses in the sanitary protective area of the replacement well and any measures that need to be taken to achieve compliance with Env-Dw 305.10;

(6) A current tax map showing property boundaries, well location, eased areas, sanitary protection area, and lot owners;

(7) A description of the replacement well in relation to surface water, wetlands, and the 100-year flood zone and any department-approved measures, if applicable, taken to elevate the permanent well casing;

(8) A plan for:

a. Conducting a constant rate pumping test of the replacement well for at least 24 hours at the previously-established permitted production volume of the well being replaced; and

b. Collecting a water quality sample in accordance with Env-Dw 305.15(b); and

(9) A plan for sealing the well that is being replaced in accordance with We 600, provided that if the well will not or cannot be sealed, the applicant shall submit a water conservation plan in accordance with Env-Wq 2101.

(b) The department shall authorize the supplier of water to install the replacement well and conduct the pumping test and sample collection and analysis if the information submitted pursuant to (a), above, demonstrates that the replacement well is needed and is likely to meet the criteria for approving the replacement well.

(c) Subsequent to the pumping test and water sampling and analysis, the supplier of water shall submit the results of the pumping test, the laboratory results from the sample, and a copy of the well completion report filed in accordance with We 800 to the department.

(d) The department shall approve the replacement well for the previously-approved capacity of the well being replaced or the sustainable yield of the replacement well as tested, whichever is less, within 30 days of receiving all of the information required by (c), above, if:

(1) The pumping test results demonstrate a sustainable yield for the replacement well and document the total drawdown at the end of the test;

(2) The water quality laboratory results from the sample collected at the end of the pumping test demonstrate that acceptable water quality can be delivered by the well, provided that for parameters that exceed primary or secondary maximum contaminant levels under Env-Dw 702 through 706, treatment or other management techniques may be used if approved by the department in accordance with Env-Dw 405;

(3) The requirements of (a)(10), above, have been met by:

a. A statement provided by a NH licensed water well contractor that:

1. The existing well has been abandoned in accordance with We 600; or

2. The well cannot be abandoned as required; and

b. If the well cannot be abandoned, a statement from the applicant that a water conservation plan developed in accordance with Env-Wq 2101 has been submitted and approved by the department;

(4) The well completion report for the replacement well was prepared and filed in accordance with We 800; and

(5) The applicant has documented that the sanitary protective area requirements established in Env-Dw 305.10 have been met, or improvements have been made to minimize the risk of contamination.

N.H. Admin. Code § Env-Dw 305.35

Adopted by, Volume XXXVI Number 14, Filed April 7, 2016, Proposed by #11062, Effective 4/1/2016, Expires 4/1/2026.