BOH Agenda 022620 - Laserfiche WebLink

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d) Bentonite slurry grout shall consist of a mixture of not more than 24 gallons of clear, potable water to one 50 pound bag of commercial sodium granular Wyoming sodium bentonite. Non-organic, non-toxic substances may be added to bentonite slurry grout mixtures to improve particle distribution and pump-ability. Bentonite slurry grout may only be used in accordance with the manufacturer's written instructions. e) Bentonite chips or pellets shall consist of pre-screened Wyoming sodium bentonite chips or compressed sodium bentonite pellets with largest dimension of at least one-fourth inch but not greater than one-fifth of the width of the annular space into which they are to be placed. Bentonite chips or pellets shall be hydrated in place. Bentonite chips or pellets may only be used in accordance with the manufacturer's written instructions. f)Specialty grout shall consist of a mixture of non-organic, non-toxic materials with characteristics of expansion, chemical-resistance, rate or heat of hydration, viscosity, density or temperature-sensitivity applicable to specific grouting requirements. Specialty grouts may not be used without prior approval by the Health Director.A request for approval of a specialty grout shall be submitted to the Director and shall include the following information: (1)A demonstration of non-toxicity, such as American National Standard Institute(ANSI)or National Sanitation Foundation, Inc. (NSF)Standard 60 certification,which is hereby incorporated by reference including subsequent amendments and editions, and can be obtained from NSF International, P.O. Box 130140, 789 North Dixboro Road,Ann Arbor, MI 48105 at a cost of three hundred and twenty-five dollars($325.00); (2)The results of an independent laboratory that demonstrate the finished product has a permeability of less that 1x10-6 centimeters per second and, if the product is used in areas of brackish or saline groundwater, the grout will not degrade over the lifetime of the well; (3)A general procedure for mixing and emplacing the grout; (4)The types of wells the request would apply to; and Comment[VH57]:MORE SPECIFICITY TO (5)Any other additional information the Department needs to ensure SPECIALITY GROUTING SUGGESTED BY THE STATE compliance with G.S. 87-84. 2.With the exception of bentonite chips or pellets, the liquid and solid components of all grout mixtures shall be blended prior to emplacement below land surface. 3. No fly ash, other coal combustion byproducts,or other wastes may be used in any grout. History Note: Substitute for NCAC 02C.0107 Eff. March 25, 2020 F. GROUT EMPLACEMENTI Comment[VH58]:SECTION E-F REVISED OCHD SECTION TO ADOPT STATE VERBIAGE 02C.0107 24