NSF Product and Service Listings

[1] This product is designed to be used off-line and flushed out prior to using the system
    for drinking water, following manufacturer's use instructions.
[2] This product has been evaluated to the requirements of NSF/ANSI/CAN 60, Annex C,
    utilizing an additional test based on ASTM Standard G22 to ensure the product does not
    support microbial growth.

[2] These products are designed to be flushed out prior to using the system for drinking 
    water. Before being placed into service, the well is to be properly flushed according 
    to the manufacturer's use instructions. Certification of these products is based on 
    the well drilling model with the following assumptions:
       - The amount of well drilling fluid is 3780 L (1000 U.S. gallons) to which the 
         drilling fluid has been added at the manufacturer's recommended level. 
       - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 
         acre aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
       - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in 
         length (20 ft.), and the bore hole is 25.4 cm in diameter (10 in.).
       - The amount of well drilling fluid removed from the well during construction is 
         equal to the combined volumes of the casing and the screen, plus an additional 
         amount removed through the well disinfection and development (90% removed). 
       - This product should not be used in constructing wells in highly porous 
         formations, such  as cavernous limestone.
[3] This product is designed to be used off-line and flushed out prior to using the system
    for drinking water, following manufacturer's use instructions.
    This product has been evaluated to the requirements of NSF/ANSI/CAN 60, Annex C,
    utilizing an additional test based on the ASTM Standard G22 to ensure the product does
    not support microbial growth.
[4] Certification of this product is based on a well drilling model using assumption in
    NSF/ANSI/CAN 60, Section 8 for well drilling foamers.
[5] This product is designed to be used off-line and flushed prior to using the system for
    drinking water, following manufacturer's use instructions.
[PC] Polyacrylamide Products Certified by NSF International comply with 40 CFR 141.111
     requirements for percent monomer and dose.

[2] These products are designed to be flushed out prior to using the system for drinking 
    water. Before being placed into service, the well is to be properly flushed according 
    to the manufacturer's use instructions. Certification of these products is based on 
    the well drilling model with the following assumptions:
       - The amount of well drilling fluid is 3780 L (1000 U.S. gallons) to which the 
         drilling fluid has been added at the manufacturer's recommended level. 
       - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 
         acre aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
       - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in 
         length (20 ft.), and the bore hole is 25.4 cm in diameter (10 in.).
       - The amount of well drilling fluid removed from the well during construction is 
         equal to the combined volumes of the casing and the screen, plus an additional 
         amount removed through the well disinfection and development (90% removed). 
       - This product should not be used in constructing wells in highly porous 
         formations, such  as cavernous limestone.
[PC] Polyacrylamide Products Certified by NSF International comply with 40 CFR 141.111
     requirements for percent monomer and dose.

[PC] Polyacrylamide Products Certified by NSF International comply with 40 CFR 141.111
     requirements for percent monomer and dose.

[1] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according to
    the manufacturer's use instructions. Certification of these products is based on the
    well drilling model with the following assumptions:
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which the
    drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 acre
    aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in
    length (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is equal
    to the combined volumes of the casing and the screen, plus an additional amount removed
    through the well disinfection and development (90% removed).
    - This product should not be used in constructing wells in highly porous formations,
    such as cavernous limestone.
[PC] Polyacrylamide Products Certified by NSF International comply with 40 CFR 141.111
     requirements for percent monomer and dose.

[1] This product is designed to be used off-line following manufacturer's use
    instructions. The well is to be flushed until the turbidity of the water is < 1 NTU
    before the system may be used for drinking water.

[1] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according to
    the manufacturer's use instructions. Certification of these products is based on the
    well drilling model with the following assumptions:
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which the
    drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 acre
    aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in
    length (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is equal
    to the combined volumes of the casing and the screen, plus an additional amount removed
    through the well disinfection and development (90% removed).
    - This product should not be used in constructing wells in highly porous formations,
    such as cavernous limestone.

[1] This product is designed to be used off-line following manufacturer's use instructions. 
    The well is to be flushed until the turbidity of the water is <1 NTU before the system
    may be used for drinking water.

[PC] Polyacrylamide Products Certified by NSF International comply with 40 CFR 141.111
     requirements for percent monomer and dose.

[1] This product is designed to be flushed out prior to using the system for drinking water.
    Before being placed into service, the well is to be properly flushed according to the
    manufacturer's use instructions.
[2] Certification of this product is based on the well drilling model with the following
    assumptions:
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which the
    drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5
    acre aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in
    length (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is equal
    to the combined volumes of the casing and the screen, plus an additional amount
    removed through the well disinfection and development (90% removed).

[1] This product is designed to be used off-line following manufacturer’s use instructions.
    The well is to be flushed until the turbidity of the water is < 1 NTU before the system
    may be used for drinking water.

[1] This product is designed to be used off-line following manufacturer’s use instructions.
    The well is to be flushed until the turbidity of the water is < 1 NTU before the system
    may be used for drinking water.
[2] This product can be shipped with either the Cetco® or Volclay® prefix.
[3] This product can be shipped with either the Cetco®, Volclay®, or Puregold® prefix.
[5] The sealant is to be mixed at a ratio of not greater than 18 pounds of product to 50
    pounds of grout.
[6] Certified for use as a well sealant additive only when used in conjunction with a well
    sealant grout.

[1] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according to
    the manufacturer's use instructions. Certification of these products is based on the
    well drilling model with the following assumptions: 
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which
      the drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 acre
      aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in
    length
      (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is equal
    to 
      the combined volumes of the casing and the screen, plus an additional amount removed 
      through the well disinfection and development (90% removed).
    - This product should not be used in constructing wells in highly porous formations,
    such 
      as cavernous limestone.
[2] This product is designed to be flushed out prior to using the system for drinking water.
    The well is to be properly flushed and drained before being placed into service. This
    product is to be used according to the manufacturer's use instructions.
[PC] Polyacrylamide Products Certified by NSF International comply with 40 CFR 141.111
     requirements for percent monomer and dose.

[1] This product is designed to be flushed out prior to using the system for drinking water.
    Before being placed into service, the well is to be properly flushed according to the
    manufacturer's use instructions.
[2] Certification of this product is based on the well drilling model with the following
    assumptions:
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which the
    drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 acre
    aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in
    length (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is equal
    to the combined volumes of the casing and the screen, plus an additional amount removed
    through the well disinfection and development (90% removed).

[1] This product is designed to be used off-line and flushed out prior to using the system
    for drinking water, following manufacturer's use instructions.
[2] This product is designed to be flushed out until the turbidity of the water is < 1 NTU. 
    Flushing is required before the system may be used for drinking
    water.

[1] This product is designed to be used off-line and flushed out prior to using the system
    for drinking water, following manufacturer's use instructions.

[1] This product is designed to be used off-line and flushed out prior to using the system
    for drinking water, following manufacturer's use instructions.
[2] This product is designed to be flushed out until the turbidity of the water is < 1 NTU.
    Flushing is required before the system may be used for drinking water.

[1] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according
    to the manufacturer's use instructions. Certification of these products is based on
    the well drilling model with the following assumptions:
    - The amount of well drilling fluid is 3780 L (1000 U.S. gallons) to which the
    drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5
    acre aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in
    length (20 ft.), and the bore hole is 25.4 cm in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is
    equal to the combined volumes of the casing and the screen, plus an additional
    amount removed through the well disinfection and development (90% removed).
    - This product should not be used in constructing wells in highly porous
    formations, such as cavernous limestone.
[PC] Polyacrylamide Products Certified by NSF International comply with 40 CFR 141.111
     requirements for percent monomer and dose.

[1] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according to
    the manufacturer's use instructions. Certification of these products is based on well
    drilling model with the following assumptions:
    - The amount of well drilling fluid used to 3780 L (1000 U.S. gallons) to which the 
      drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 
      acre aquifer of 6.1 meter depth (20 ft) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft), the screen is 6.1 meters in 
      length (20 ft), and the bore hole is 25.4 cm in diameter (10 in).
    - The amount of well drilling fluid removed from the well during construction is equal 
      to the combined volumes of the casing and the screen, plus an additional amount 
      removed through the well disinfection and development (90% removed).

[1] This product is designed to be flushed out until the turbidity of the water is < 1 NTU.
    Flushing is required before the system may be used for drinking water.

[1] This product is designed to be used off-line following manufacturer’s use instructions.
    The well is to be flushed until the turbidity of the water is < 1 NTU before the system
    may be used for drinking water.
[2] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly
    flushed according to the manufacturer's use instructions. Certification of these
    products is based on the well drilling model with the following assumptions:
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which the
    drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 acre
    aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in
    length (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is equal
    to the combined volumes of the casing and the screen, plus an
    additional amount removed through the well disinfection and development (90% removed).
    - This product should not be used in constructing wells in highly porous formations,
    such as cavernous limestone.

[2] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly
    flushed according to the manufacturer's use instructions. Certification of these
    products is based on the well drilling model with the following assumptions:
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which the
    drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 acre
    aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in
    length (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is equal
    to the combined volumes of the casing and the screen, plus an
    additional amount removed through the well disinfection and development (90% removed).
    - This product should not be used in constructing wells in highly porous formations,
    such as cavernous limestone.
[PC] Polyacrylamide Products Certified by NSF International comply with 40 CFR 141.111
     requirements for percent monomer and dose.

[1] This product is designed to be used off-line following manufacturer's use instructions. 
    The well is to be flushed until the turbidity of the water is < 1 NTU before the system
    may be used for drinking water.
[2] Trade name may include numeric suffix corresponding to the quantity of fluid to which
    the pre-measured packaged product is added.

[1] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according to
    the manufacturer's use instructions.  Certification of these products is based on the
    well drilling model with the following assumptions:
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which the 
      drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 
      acre aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in 
      length (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is equal 
      to the combined volumes of the casing and the screen, plus an additional amount 
      removed through the well disinfection and development (90% removed).
    - This product should not be used in constructing wells in highly porous formations, 
      such as cavernous limestone.
[2] This product is designed to be used off-line following manufacturer's use instructions. 
    The well is to be flushed until the turbidity of the water is < 1 NTU before the system
    may be used for drinking water.
[PC] Polyacrylamide Products Certified by NSF International comply with 40 CFR 141.111
     requirements for percent monomer and dose.

[1] This product is designed to be used off-line following manufacturer's use instructions.
    The well is to be flushed until the turbidity of the water is < 1 NTU before the system
    may be used for drinking water.

[1] This product is designed to be used off-line and flushed out prior to using the system
    for drinking water, following manufacturer's use instructions.

[1] This product is designed to be used off-line following manufacturer's use instructions.
    The well is to be flushed until the turbidity of the water is < 1 NTU before the system
    may be used for drinking water.

[1] This product is designed to be used off-line following manufacturer’s use instructions.
    The well is to be flushed until the turbidity of the water is < 1 NTU before the system
    may be used for drinking water.
[2] This product is Certified for use as a well sealant additive only when used in
    conjunction with a well sealant grout.
[3] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according to
    the manufacturer's use instructions.
    Certification of these products is based on the well drilling model with the following
    assumptions: 
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which the
    drilling fluid has been added at the manufacturer's recommended level. 
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 acre
    aquifer of 6.1 meter depth (20 ft.) and 25% porosity. 
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in
    length (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.). 
    - The amount of well drilling fluid removed from the well during construction is equal
    to the combined volumes of the casing and the screen, plus an additional amount removed
    through the well disinfection and development (90% removed). 
    - This product should not be used in constructing wells in highly porous formations,
    such as cavernous limestone. 
    
[4] This product is designed to be used off-line following manufacturer’s use instructions.
    The well is to be flushed until the turbidity of the water is 1 NTU before the system
    may be used for drinking water.

[PC] Polyacrylamide Products Certified by NSF International comply with 40 CFR 141.111
     requirements for percent monomer and dose.

[1] Certification of this product is based on a well drilling model using assumptions staed
    in NSF/ANSI/CAN 60, Section 8 for well drilling foamers.
[2] This product is designed to be used off-line and flushed out prior to using the system
    for drinking water, following manufacturer's use instructions.
[3] This product is designed to be used off-line following manufacturer's use instructions.
    The well is to be flushed until the turbidity of the water is < 1 NTU before the system
    may be used for drinking water.
[4] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according to
    the manufacturer's use instructions.
[5] Certification of these products is based on the well drilling model with the following
    assumptions: 
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which the 
      drilling fluid has been added at the manufacturer's recommended level. 
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 
      acre aquifer of 6.1 meter depth (20 ft.) and 25% porosity. 
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in 
      length (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.). 
    - The amount of well drilling fluid removed from the well during construction is equal 
      to the combined volumes of the casing and the screen, plus an additional amount 
      removed through the well disinfection and development (90% removed). 
    - This product should not be used in constructing wells in highly porous formations, 
      such as cavernous limestone.
[PC] Polyacrylamide Products Certified by NSF International comply with 40 CFR 141.111
     requirements for percent monomer and dose.

[PY] Polyamines Certified by NSF International comply with 40 CFR 141.111 requirements for
     percent monomer and dose.

[1] This product is designed to be used off-line following manufacturer's use instructions.
    The well is to be flushed until the turbidity of the water is < 1 NTU before the system
    may be used for drinking water.

[1] This product is designed to be flushed out prior to using the system for drinking water.
     The well is to be properly flushed and drained before being placed into service.  This
    product is to be used according to the manufacturer's use instructions.
[2] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according to
    the manufacturer's use instructions. Certification of these products is based on the
    well drilling model with the following assumptions: 
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which
      the drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 acre
      aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in
    length
      (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is equal
    to 
      the combined volumes of the casing and the screen, plus an additional amount removed 
      through the well disinfection and development (90% removed).
    - This product should not be used in constructing wells in highly porous formations,
    such
      as cavernous limestone.
    
[PC] Polyacrylamide Products Certified by NSF International comply with 40 CFR 141.111
     requirements for percent monomer and dose.

[1] This product is designed to be flushed out prior to using the system for drinking water.
     The well is to be properly flushed and drained before being placed into service.  This
    product is to be used according to the manufacturer's use instructions.
[2] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according to
    the manufacturer's use instructions. Certification of these products is based on the
    well drilling model with the following assumptions: 
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which
      the drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 acre
      aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in
    length
      (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is equal
    to 
      the combined volumes of the casing and the screen, plus an additional amount removed 
      through the well disinfection and development (90% removed).
    - This product should not be used in constructing wells in highly porous formations,
    such
      as cavernous limestone.
    

[1] This product is designed to be used off-line following manufacturer's use
    instructions. The well is to be flushed until the turbidity of the water is < 1 NTU
    before the system may be used for drinking water.

[WL] These products are designed to be flushed out prior to using the system for drinking

     water.  The well shall be properly flushed and drained before being placed in service.

[1] This product is designed to be flushed out prior to using the system for drinking water.
     The well is to be properly flushed and drained before being placed into service.  This
    product is to be used according to the manufacturer's use instructions.
[2] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according to
    the manufacturer's use instructions. Certification of these products is based on the
    well drilling model with the following assumptions: 
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which
      the drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 
      acre aquifer of 6.1 meter depth (20 ft.) and 25% porsity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in 
      length (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is equal 
      to the combined volumes of the casing and the screen, plus an additional amount 
      removed through the well disinfection and development (90% removed).
    - This product should not be used in constructing wells in highly porous formations, 
      such as cavernous limestone.

[1] This product is designed to be flushed out prior to using the system for drinking water.
     The well is to be properly flushed and drained before being placed into service.  This
    product is to be used according to the manufacturer's use instructions.
[2] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according to
    the manufacturer's use instructions. Certification of these products is based on the
    well drilling model with the following assumptions: 
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which
      the drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 
      acre aquifer of 6.1 meter depth (20 ft.) and 25% porsity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in 
      length (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is equal 
      to the combined volumes of the casing and the screen, plus an additional amount 
      removed through the well disinfection and development (90% removed).
    - This product should not be used in constructing wells in highly porous formations, 
      such as cavernous limestone.
[PC] Polyacrylamide Products Certified by NSF International comply with 40 CFR 141.111
     requirements for percent monomer and dose.
[PY] Polyamines Certified by NSF International comply with 40 CFR 141.111 requirements for
     percent monomer and dose.

[1] This product is designed to be flushed out prior to using the system for drinking water.
     The well is to be properly flushed and drained before being placed into service.  This
    product is to be used according to the manufacturer's use instructions.
[2] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according to
    the manufacturer's use instructions. Certification of these products is based on the
    well drilling model with the following assumptions: 
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which
      the drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 
      acre aquifer of 6.1 meter depth (20 ft.) and 25% porsity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in 
      length (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is equal 
      to the combined volumes of the casing and the screen, plus an additional amount 
      removed through the well disinfection and development (90% removed).
    - This product should not be used in constructing wells in highly porous formations, 
      such as cavernous limestone.

[1] This product is designed to be flushed out prior to using the system for drinking water.
    Before being placed into service, the well is to be properly flushed according to the
    manufacturer's use instructions.
[2] Certification of this product is based on the well drilling model with the following
    assumptions:
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which the
    drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 acre
    aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in
    length (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is equal
    to the combined volumes of the casing and the screen, plus an additional amount removed
    through the well disinfection and development (90% removed).

[1] This product is designed to be used off-line and flushed out prior to using the system
    for drinking water, following manufacturer's use instructions.

[1] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according to
    the manufacturer's use instructions.  Certification of these products is based on the
    well drilling model with the following assumptions:
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which the 
      drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 acre
    
      aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in
    length 
      (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is equal
    to 
      the combined volumes of the casing and the screen, plus an additional amount removed 
      through the well disinfection and development (90% removed).
    - This product should not be used in constructing wells in highly porous formations,
    such 
      as cavernous limestone.

[4] This product should not be used in constructing wells in highly porous formations such
    as cavernous limestone.
    This product is designed to be flushed out prior to using the system for drinking water.
    Certification of this product is based on a well drilling model with the following
    assumptions:
    The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which the
    drilling fluid has been added at the manufacturer's recommended level.  The aquifer
    contains 3.1 million liters of water (815,000 gallons) based on a 0.5 acre aquifer of
    6.1 meter depth (20 ft.) and 25% porosity.  The bore hole is 61 meters (200 ft.) in
    total depth, the screen is 6.1 meters in length (20 ft.), and the bore hole is 25.4 cm
    (10 in.) in diameter.  The amount of well drilling fluid removed from the well during
    construction is equal to the combined volumes of the casing, the screen and the bore
    hole annuals around the casing and the screen, plus an additional amount removed through
    the well disinfection and development (90% removed).
[PC] Polyacrylamide Products Certified by NSF International comply with 40 CFR 141.111
     requirements for percent monomer and dose.

[1] This product is designed to be used off-line following manufacturer's use instructions. 
    The well is to be flushed until the turbidity of the water is < 1 NTU before the system
    may be used for drinking water.

[1] These products are designed to be flushed out prior to using the system for drinking
    water following the manufacturer's use instructions. The well is to be properly flushed
    and drained until the turbidity of water is <1 NTU.

[1] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according to
    the manufacturer's use instructions. Certification of these products is based on well
    drilling model with the following assumptions:
    - The amount of well drilling fluid used to 3780 L (1000 U.S. gallons) to which the 
      drilling fluid has been added at the manufacturer's recommended level. 
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 
      acre aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters 
      in length (20 ft.), and the bore hole is 25.4 cm in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is 
      equal to the combined volumes of the casing and the screen, plus an 
      additional amount removed through the well disinfection and development 
      (90% removed).

[1] This product is designed to be used off-line and flushed out prior to using the system
    for drinking water, following manufacturer's use instructions.
[2] This product is designed to be flushed out until the turbidity of the water is < 1 NTU.
    Flushing is required before the system may be used for drinking water.

[1] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly
    flushed according to the manufacturer's use instructions. Certification of these
    products is based on the well drilling model with the following assumptions:
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which the
    drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 acre
    aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in
    length (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is equal
    to the combined volumes of the casing and the screen, plus an
    additional amount removed through the well disinfection and development (90% removed).
    - This product should not be used in constructing wells in highly porous formations,
    such as cavernous limestone.

[1] This product is designed to be used off-line and flushed out prior to using the system
    for drinking
    water, following manufacturer's use instructions.

[1] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according to
    the manufacturer's use instructions. Certification of these products is based on the
    well
    drilling model with the following assumptions:
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which the
    drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 acre
    aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in
    length
    (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is equal
    to
    the combined volumes of the casing and the screen, plus an additional amount removed
    through the well disinfection and development (90% removed).
    - This product should not be used in constructing wells in highly porous formations,
    such
    as cavernous limestone.
[PC] Polyacrylamide Products Certified by NSF International comply with 40 CFR 141.111
     requirements for percent monomer and dose.

[1] This product is designed to be used off-line following manufacturer's use instructions.
    The well is to be flushed until the turbidity of the water is < 1 NTU before the system
    may be used for drinking water.

[1] This product is designed to be flushed out prior to using the system for drinking water.
    Before being placed into service, the well is to be properly flushed according to the
    manufacturer's use instructions.
[2] Certification of this product is based on the well drilling model with the following
    assumptions:
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which the
    drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5
    acre aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in
    length (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is equal
    to the combined volumes of the casing and the screen, plus an additional amount
    removed through the well disinfection and development (90% removed).

[1] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according
    to the manufacturer's use instructions. Certification of these products is based on
    well drilling model with the following assumptions:
    - The amount of well drilling fluid used to 3780 L (1000 U.S. gallons) to which the
    drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5
    acre aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters
    in length (20 ft.), and the bore hole is 25.4 cm in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is
    equal to the combined volumes of the casing and the screen, plus an
    additional amount removed through the well disinfection and development
    (90% removed).

[1] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according
    to the manufacturer's use instructions. Certification of these products is based on
    the well drilling model with the following assumptions:
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which
    the drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5
    acre aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in
    length (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is equal
    to the combined volumes of the casing and the screen, plus an additional amount
    removed through the well disinfection and development (90% removed).
    - This product should not be used in constructing wells in highly porous formations,
    such as cavernous limestone.

[1] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according
    to the manufacturer's use instructions. Certification of these products is based on
    the well drilling model with the following assumptions:
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which
    the drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5
    acre aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in
    length (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is equal
    to the combined volumes of the casing and the screen, plus an additional amount
    removed through the well disinfection and development (90% removed).
    - This product should not be used in constructing wells in highly porous formations,
    such as cavernous limestone.
[PC] Polyacrylamide Products Certified by NSF International comply with 40 CFR 141.111
     requirements for percent monomer and dose.
[PY] Polyamines Certified by NSF International comply with 40 CFR 141.111 requirements for
     percent monomer and dose.

[1] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according to
    the manufacturer's use instructions. Certification of these products is based on the
    well drilling model with the following assumptions:
     - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which the
       drilling fluid has been added at the manufacturer's recommended level.
     - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5
       acre aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
     - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in
       length (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
     - The amount of well drilling fluid removed from the well during construction is
       equal to the combined volumes of the casing and the screen, plus an additional
       amount removed through the well disinfection and development (90% removed).
     - This product should not be used in constructing wells in highly porous formations,
       such as cavernous limestone.
[2] The pH of the influent and effluent water should be monitored to ensure that all traces
    of the product have been removed before placing into service.

[1] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according to
    the manufacturer's use instructions. Certification of these products is based on the
    well drilling model with the following assumptions:
     - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which the
       drilling fluid has been added at the manufacturer's recommended level.
     - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5
       acre aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
     - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in
       length (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
     - The amount of well drilling fluid removed from the well during construction is
       equal to the combined volumes of the casing and the screen, plus an additional
       amount removed through the well disinfection and development (90% removed).
     - This product should not be used in constructing wells in highly porous formations,
       such as cavernous limestone.
[PC] Polyacrylamide Products Certified by NSF International comply with 40 CFR 141.111
     requirements for percent monomer and dose.

[PC] Polyacrylamide Products Certified by NSF International comply with 40 CFR 141.111
     requirements for percent monomer and dose.

[1] This product is designed to be used off-line following manufacturer’s use instructions.
    The well is to be flushed until the turbidity of the water is < 1 NTU before the system
    may be used for drinking water.

[1] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly
    flushed according to the manufacturer's use instructions. Certification of these
    products is based on the well drilling model with the following assumptions:
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which the
    drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 acre
    aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in
    length (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is equal
    to the combined volumes of the casing and the screen, plus an
    additional amount removed through the well disinfection and development (90% removed).
    - This product should not be used in constructing wells in highly porous formations,
    such as cavernous limestone.

[1] This product is designed to be used off-line and flushed out prior to using the system
    for drinking water, following manufacturer's use instructions.

[1] This product is designed to be flushed out prior to using the system for drinking water.
     The well is to be properly flushed and drained before being placed into service.  This
    product is to be used according to the manufacturer's use instructions.
[2] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according to
    the manufacturer's use instructions. Certification of these products is based on the
    well drilling model with the following assumptions: 
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which
      the drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 
      acre aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in 
      length (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is equal 
      to the combined volumes of the casing and the screen, plus an additional amount 
      removed through the well disinfection and development (90% removed).
    - This product should not be used in constructing wells in highly porous formations, 
      such as cavernous limestone.

[1] This product is designed to be flushed out prior to using the system for drinking water.
     The well is to be properly flushed and drained before being placed into service.  This
    product is to be used according to the manufacturer's use instructions.
[2] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according to
    the manufacturer's use instructions. Certification of these products is based on the
    well drilling model with the following assumptions: 
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which
      the drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 
      acre aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in 
      length (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is equal 
      to the combined volumes of the casing and the screen, plus an additional amount 
      removed through the well disinfection and development (90% removed).
    - This product should not be used in constructing wells in highly porous formations, 
      such as cavernous limestone.
[4] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according to
    the manufacturer's use instructions. Certification of these products is based on the
    well drilling model with the following assumptions: 
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which
      the drilling fluid has been added at 7.6L.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 
      acre aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in 
      length (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is equal 
      to the combined volumes of the casing and the screen, plus an additional amount 
      removed through the well disinfection and development (90% removed).
    
[PC] Polyacrylamide Products Certified by NSF International comply with 40 CFR 141.111
     requirements for percent monomer and dose.
[PY] Polyamines Certified by NSF International comply with 40 CFR 141.111 requirements for
     percent monomer and dose.

[1] This product is designed to be flushed out prior to using the system for drinking water.
     The well is to be properly flushed and drained before being placed into service.  This
    product is to be used according to the manufacturer's use instructions.
[2] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according to
    the manufacturer's use instructions. Certification of these products is based on the
    well drilling model with the following assumptions: 
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which
      the drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 
      acre aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in 
      length (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is equal 
      to the combined volumes of the casing and the screen, plus an additional amount 
      removed through the well disinfection and development (90% removed).
    - This product should not be used in constructing wells in highly porous formations, 
      such as cavernous limestone.

[1] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly
    flushed according to the manufacturer's use instructions. Certification of these
    products is based on the well drilling model with the following assumptions:
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which the 
      drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 
      acre aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in 
      length (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is equal 
      to the combined volumes of the casing and the screen, plus an additional amount 
      removed through the well disinfection and development (90% removed).
    - This product should not be used in constructing wells in highly porous formations, 
      such as cavernous limestone.
[PC] Polyacrylamide Products Certified by NSF International comply with 40 CFR 141.111
     requirements for percent monomer and dose.

[1] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according
    to the manufacturer's use instructions. Certification of these products is based on
    well drilling model with the following assumptions:
    - The amount of well drilling fluid used to 3780 L (1000 U.S. gallons) to which the
    drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5
    acre aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters
    in length (20 ft.), and the bore hole is 25.4 cm in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is
    equal to the combined volumes of the casing and the screen, plus an
    additional amount removed through the well disinfection and development
    (90% removed).

[1] This product is designed to be used off-line and flushed out prior to using the system
    for drinking water, following manufacturer's use instructions.

[1] This product is designed to be used off-line following manufacturer's use instructions.
    The well is to be flushed until the turbidity of the water is < 1 NTU before the system
    may be used for drinking water.

[1] This product is designed to be flushed out prior to using the system for drinking water.
    Before being placed into service, the well is to be properly flushed according to the
    manufacturer's use instructions.
[2] Certification of this product is based on the well drilling model with the following
    assumptions: 
    
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which the 
      drilling fluid has been added at the manufacturer's recommended level. 
    
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 
      acre aquifer of 6.1 meter depth (20 ft.) and 25% porosity. 
    
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in 
      length (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.). 
    
    - The amount of well drilling fluid removed from the well during construction is equal 
      to the combined volumes of the casing and the screen, plus an additional amount 
      removed through the well disinfection and development (90% removed).

[1] This product is designed to be used off-line following manufacturer’s use instructions.
    The well is to be flushed until the turbidity of the water is < 1 NTU before the system
    may be used for drinking water.

[1] These products are designed to be flushed out prior to using the system for drinking
    water.  The well is to be properly flushed and drained until the turbidity of the water
    is < 1 NTU.
[2] These products are designed to be flushed out prior to using the system for drinking
    water.  The well is to be properly flushed and drained before being placed in service.

[1] This product is designed to be flushed out until the turbidity of the water is < 1 NTU.
    Flushing is required before the system may be used for drinking water.
[WS] The well shall be properly flushed and drained before being placed in service.

[1] This product is designed to be flushed out until the turbidity of the water is < 1 NTU.
    Flushing is required before the system may be used for drinking water.
[2] Certification of this product is based on a well drilling model using assumptions stated
    in NSF/ANSI/CAN 60, Section 8 for well drilling foamers.
[3] This product is designed to be used off-line and flushed out prior to using the system
    for drinking water, following the manufacturer's use instructions.
[4] These products should not be used in constructing wells in highly porous formations such
    as cavernous limestone.
[5] Certification of these products is based on a well drilling model with the following
    assumptions:
    -The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which the 
     drilling fluid has been added at the manufacturer's recommended level.  
    -The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 acre 
     aquifer of 6.1 meter depth (20 ft.) and 25% porosity.  
    -The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in length
    
     (20 ft.), and the bore hole is 25.4 cm in diameter (10 in.).  
    -The amount of well drilling fluid removed from the well during construction is equal to
    
     the combined volumes of the casing, the screen, and bore hole annuals around the bore 
     hole annuals around the casing and the screen, plus an additional amount removed 
     through the well disinfection and development (90% removed).
[PC] Polyacrylamide Products Certified by NSF International comply with 40 CFR 141.111
     requirements for percent monomer and dose.
[WS] The well shall be properly flushed and drained before being placed in service.

[4] These products should not be used in constructing wells in highly porous formations such
    as cavernous limestone.
[5] Certification of these products is based on a well drilling model with the following
    assumptions:
    -The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which the 
     drilling fluid has been added at the manufacturer's recommended level.  
    -The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 acre 
     aquifer of 6.1 meter depth (20 ft.) and 25% porosity.  
    -The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in length
    
     (20 ft.), and the bore hole is 25.4 cm in diameter (10 in.).  
    -The amount of well drilling fluid removed from the well during construction is equal to
    
     the combined volumes of the casing, the screen, and bore hole annuals around the bore 
     hole annuals around the casing and the screen, plus an additional amount removed 
     through the well disinfection and development (90% removed).
[6] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according to
    the manufacturer's use instructions.
[PC] Polyacrylamide Products Certified by NSF International comply with 40 CFR 141.111
     requirements for percent monomer and dose.

[1] This product is designed to be flushed out until the turbidity of the water is < 1 NTU.
    Flushing is required before the system may be used for drinking water.

[1] This product is designed to be flushed out until the turbidity of the water is < 1 NTU.
    Flushing is required before the system may be used for drinking water.
[WS] The well shall be properly flushed and drained before being placed in service.

[1] This product is designed to be flushed out until the turbidity of the water is < 1 NTU.
    Flushing is required before the system may be used for drinking water.
[2] These products are designed to be flushed out prior to using the system for drinking
    water.  The well is to be properly flushed and drained until the turbidity of the water
    is <1 NTU.
[WS] The well shall be properly flushed and drained before being placed in service.

[1] This product is designed to be flushed out until the turbidity of the water is < 1 NTU.
    Flushing is required before the system may be used for drinking water.