New Hampshire Code of Administrative Rules
We - Water Well Board
Chapter We 600 - STANDARDS FOR THE CONSTRUCTION, MAINTENANCE AND ABANDONMENT OF WELLS
Part We 602 - NEW WELL CONSTRUCTION
Section We 602.34 - Development of Well Yield by Hydrofracturing

Universal Citation: NH Admin Rules We 602.34

Current through Register No. 40, October 3, 2024

A water well contractor who uses hydrofracturing, as defined in We 101.20 to potentially increase the yield of a water well shall comply with the following requirements:

(a) Injection water used for hydrofracturing shall be drawn from a potable source if available;

(b) If a potable water source is not available, a water well contractor may use non-potable water if the water is:

(1) Not drawn from stagnant water sources such as beaver ponds;

(2) Free of visible sediment; and

(3) Chlorinated to a minimum concentration of 50 parts per million and allowed to stand for a minimum of 1/2 hour contact-time prior to use;

(c) Packer settings shall be no less than 40 feet below the bottom of the casing and at least 60 feet below ground surface;

(d) For wells yielding 5 gallons per minute or less, yield measurement shall be for a minimum of 30 minutes after dewatering the hole and until the flow has stabilized;

(e) Dewatering the hole shall be accomplished by removing, either by pumping or by air lift method, no less than a quantity of water equal to the volume of water in the well;

(f) For the purposes of (e), above, dewatering a 6 inch diameter, 500 foot well, shall require removing a minimum of 1 1/2 gallons of water per linear foot of water column from the well, prior to taking the first yield measurement; and

(g) Dry ice and explosives shall not be used for hydrofracturing or well development in bedrock well construction.

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