Rhode Island Code of Regulations › Title 440 - Contractors' Registration and Licensing Board › Chapter 10 - General Administration, Registration, Licensing, and Filing Claims › Subchapter 00 - N/A › Part 6 - Rules and Regulations for Well-Drillers, Pump Installers, and Water Filtration Contractors › Section 440-RICR-10-00-6.24 - Performance Standards

Current through June 14, 2024
A. The
				 performance standards are intended to specify the minimum performance
				 standards and requirements for the construction, alteration,
				 installation, and repair of wells and pumps, and residential
				 filtration/water treatment systems.
Supplemental performance standards for wells,
					 pumps and filtration/water treatment for public water systems, as
					 described in R.I. Gen. Laws Chapter 46-13, can be found in 216-RICR-
					 50-05-1.
B.
				 Well-drillers, pump installers, water filtration contractors, and
				 water filtration installers shall perform all work in accordance with
				 R.I. Gen. Laws Chapters 5-65 and 5-65.2, these Rules and Regulations,
				 any plans and specifications governing the project(s), and
				 city/town/municipal regulations.
C. The Board's investigators and/or
				 staff may inspect well-drillers, pump installers, water filtration
				 contractors, and water filtration installers work to ensure it
				 complies with all applicable laws, regulations, city/town/municipal
				 regulations, plans, and specifications governing the project,
				 industry standards, manufacturers' specifications. Contractor
				 responsibility may not extend to items which have been subject to
				 owner neglect, modifications, or abnormal use.
6.24.2
Defects in
				 Equipment
Nothing in this Part creates a warranty or
					 limitations on a warranty for defective equipment.
6.24.3
Applicable Building
				 Code
A. For the purposes of
				 this Part, the building code governing the life safety, structural,
				 mechanical, plumbing, electrical, fuel, gas, and energy requirements
				 for well drillers, pump installers, and
				 water-filtration/treatment-system work shall be the building code
				 that was adopted and in effect at the time the work was
				 completed.
B. Well
				 drillers, pump installers, and water-filtration/treatment system
				 contractors and installers must also comply with 216-RICR- 50-05-1
				 when working on public water systems as defined in R.I. Gen. Law
				 §46-13-2.
6.24.4
Filtration
				 and Treatment of Water
All installations and/or repairs shall meet or
					 exceed all applicable State building codes, and Water Quality
					 Association, and National Sanitation Foundation/American National
					 Standards Institute standards.
6.24.5
Construction
				 Standards for Public Water Wells
In addition to the applicable standards found in
					 this Part, standards for public water systems, including wells,
					 pumps, filtration/treatment and other appurtenances are set forth by
					 the Rhode Island Department of Health in 216-RICR- 50-05-1.
6.24.6
Construction Standards for Non-Public Water Wells
A. Well Location Wells shall be
				 located in a manner to reduce the likelihood of contamination from
				 sources of pollution at or near the ground surface.
1. The following are minimum
				 isolation distances from the listed potential contamination sources:
Distribution Box
75 feet
Septic Tank
75 feet
Sewage Disposal Field, including
								 cesspools
100 feet
Sewer Line
50 feet
Road
25 feet from the edge of the road
								 surface
Fuel Storage Tanks
As far as possible from wells
Livestock Pens / animal waste storage
								 facility
No well shall be located within 100
								 feet
Active Agricultural Areas
Minimum of 20 feet and uphill whenever
								 possible
2. Tiered Separation Distances
				 between leach field and private wells based on OWTS Design Flow:
Design Flow (gpd)
Distance from Leach field (ft)
100
1000-1999
150
2000-4999
200
5000-9999
300
3. Source of Contamination
				 Additional Distance Requirements
Agricultural chemical:
tank or container with 25 gallons or
								 more or 100 pounds or more dry weight, or equipment filling or
								 cleaning area without safeguards
150 feet
storage or equipment filling or
								 cleaning area with safeguards
100 feet
storage or equipment filling or
								 cleaning area with safeguards and roofed
50 feet
Anhydrous ammonia tank
50 feet
Animal:
feedlot, unroofed, 300 or more animal
								 units
100 feet
feedlot, more than 1.0, but less than
								 300 animal units
50 feet
building or poultry building, including
								 a horse riding area, more than 1.0 animal unit
50 feet
Rendering plant
100 feet
feeding or watering area within a
								 pasture, more than 1.0 animal unit
50 feet
area to bury more than one animal
								 unit
100 feet
building, feedlot, confinement area, or
								 kennel, 0.1 to 1.0 animal unit
20 feet
Building, building projection, deck,
								 overhang, permanent structure
3 feet
Cistern or reservoir, buried,
								 non-pressurized water supply
20 feet
Composting
Leaf and yard waste
200 feet
Putrescible waste
200 feet
Mixed Solid Waste
1000 feet
Construction or demolition debris
								 disposal area
500 feet
Cooling water pond, industrial
50 feet
Deicing chemicals, bulk road
50 feet
Drain field (see Absorption
								 area)
Electric transmission line
10 feet
Electrical transformer storage area,
								 oil-filled
50 feet
Elevator boring, not conforming to
								 rule
50 feet
Elevator boring, conforming to
								 rule
20 feet
Fertilizer chemigation tank,
								 safeguarded, from irrigation well only
20 feet
Floor drain, grate, or trough connected
								 to a buried sewer
50 feet
if buried sewer is air-tested, approved
								 materials, serving one building, or two or less single-family
								 residences
20 feet
Frost-proof yard hydrant or discharge
								 of a frost-proof hydrant draining into the soil, fire hydrant or
								 flushing hydrant
10 feet
Gas (flammable or volatile) pipe
10 feet
Grave or mausoleum
50 feet
Human Remains
100 feet
Gravel pocket or French drain for clear
								 water drainage
20 feet
Hazardous substance:
tank or container, above ground or
								 underground, 56 gallons or more, or 100 pounds or more dry weight,
								 without safeguards
150 feet
tank or container, above ground or
								 underground, 56 gallons or more, or 100 pounds or more dry weight
								 with safeguards
100 feet
Buried piping:
50 feet
multiple storage tanks or containers
								 for residential retail sale or use,
no single tank or container exceeding
								 56 gallons or 100 pounds, but aggregate volume exceeding
50 feet
Horizontal ground source closed loop
								 heat exchanger buried piping
50 feet
Horizontal ground source closed loop
								 heat exchanger buried piping and horizontal piping, approved
								 materials, and heat transfer fluid
10 feet
Household solid waste disposal area,
								 single residence
100 feet
Interceptor, including a flammable
								 waste or sediment
50 feet
Petroleum
300 feet
Unused, unsealed well or boring
50 feet
Vertical heat exchanger (vertical)
								 piping, conforming to rule
35 feet
horizontal piping conforming to
								 rule
10 feet
Wastewater rapid infiltration basin,
								 municipal or industrial
300 feet
Wastewater spray irrigation area,
								 municipal or industrial
150 feet
Wastewater stabilization pond
								 municipal, 500 or more gallons/acre/day of leakage
300 feet
municipal, less than 500
								 gallons/acre/day of leakage
150 feet
industrial
150 feet
Wastewater treatment unit tanks,
								 vessels, and components (Package plant)
50 feet
Water treatment backwash disposal
								 area
50 feet
Water treatment backwash holding basin,
								 reclaim basin, or surge tank with a direct sewer connection
50 feet
with a backflow protected sewer
								 connection
50 feet
Stormwater Infiltration System,
								 distances pursuant to 250-RICR- 150-10-8
3. The well driller shall inform
				 the property owner of the proper isolation distances from pollution
				 sources. The property owner shall provide information to the well
				 driller on the location of existing reserved and permitted areas for
				 subsurface disposal fields and other pollution sources. If the
				 property owner is unable to provide such information, the property
				 owner shall obtain that information from the city/town hall or the
				 Onsite Wastewater Treatment Systems (OWTS) Section of the Department
				 of Environmental Management.
B. Variances
1. In those circumstances in which
				 compliance with the requirements for locating a new or replacement
				 non-public water well would result in undue hardship, property owners
				 may seek a variance from any one or more of the siting requirements,
				 in accordance with the following:
a. Except as specified in (c), from
				 the building code board of appeals authorized in the municipality
				 with jurisdiction over the property on which the well is
				 proposed;
b. Except as
				 specified in (c), in the absence of a local building code board of
				 appeals, from the state building code board of appeals; and
c. From the Department of
				 Environmental Management in all cases in which the well is proposed
				 to be installed as part of an application for the new construction of
				 or repair of an onsite wastewater treatment system. The appropriate
				 authority specified above may grant a variance to the extent
				 necessary to ameliorate the undue hardship and to the extent the
				 exemption can be granted without impairing the intent and purpose of
				 this chapter.
C. General Requirements for New
				 Non-Public/Private Systems
1. Prior
				 to being placed into service, the local building official shall
				 verify that all new private water systems or existing private water
				 systems meet all applicable codes and standards.
2. As specified in the rules and
				 regulations for Private Drinking Water Systems (216-RICR- 50-05-2),
				 all required testing shall be performed after all plumbing and
				 water-using appliances are in place and the system has been properly
				 disinfected in accordance with § 6.24.17 of this Part. The
				 sampling point for this sample shall be an interior faucet that
				 yields untreated (raw) well water. Testing must be conducted prior to
				 the installation of any drinking water quality treatment systems. All
				 drinking water quality treatment systems in-place shall be identified
				 and noted.
3. All water
				 samples for lead analyses shall be acquired as first draw samples
				 from the cold-water tap. Bubblers or drinking fountains shall not be
				 satisfactory sampling points. All treatment systems in-place shall be
				 identified and noted.
D. Basic Restrictions
1. All water used in the
				 construction, alteration, repair, hydro fracturing, surging or
				 abandonment of a well shall be drawn from a potable source.
2. Organic materials
				 which foster or promote undesired organic growth or have the
				 potential to degrade water quality shall not be employed in the
				 construction of a drinking water well. This includes but is not
				 limited to brans, hulls, grains, starches, and proteins.
3. In no case shall explosives be
				 detonated inside the well casing or liner pipe without written
				 permission from the Rhode Island State Fire Marshall. The request
				 shall include the type of explosive to be used and how they will be
				 placed. In no case shall an explosive charge be dropped down a well
				 or used to sever installed well casing or liner pipe.
4. System piping installed for
				 geothermal wells shall not extend more than five (5) feet into a
				 structure to a shutoff.
5. No well shall be used for the
				 injection of surface water.
6. In no case shall a well be
				 constructed to allow commingling or leakage of groundwater within an
				 individual well by gravity flow or artesian pressure from different
				 groundwater aquifers associated with different geological
				 units.
7. All wells that
				 yield contaminated or mineralized water, and therefore are not
				 usable, must be adequately cased and sealed off to prevent
				 contamination of the overlying or underlying water-bearing
				 zones.
8. All wells when
				 unattended during construction must be secured per recognized
				 industry standards.
E. Drilling - General
1. The well driller shall not cause
				 undue soil erosion or water pollution and shall not pollute the site
				 with fuels, lubricants, solvents, or other contaminants used in
				 construction of the well. Any drilling fluids used shall be disposed
				 of properly.
2. The well
				 driller shall use care in the selection and use of drilling fluids,
				 additives, cements, and other materials to avoid materials and
				 procedures that may adversely affect the drill site, or any
				 groundwater encountered. Any chemical or other additives used in
				 drilling along with rock cuttings shall be cleaned out from the
				 well.
3. Well drillers
				 drilling a well for potable water shall not reuse casing or drilling
				 fluids that may have become contaminated. All drilling equipment that
				 may have become contaminated during a drilling operation shall be
				 thoroughly cleaned, decontaminated, and disinfected before
				 reuse.
4. Disinfection
				 shall be as per § 6.22.19 of this Part.
5. Wells shall be designed to be of
				 adequate diameter and depth capable of yielding the quantity of water
				 required by appendix B of these standards.
F. Pumps and Pumping Equipment
1. Pumps and pumping equipment
				 shall be installed to make the most efficient use of well.
2. Pumps and pumping equipment
				 shall be located to permit convenient access for inspection,
				 maintenance, and repair.
3. In the event the base plate of a
				 pump is placed directly over the well, the base plate shall be a type
				 designed to form a water tight seal with the well casing or pump
				 foundation.
4. The well
				 shall be properly vented to allow for pressure changes within the
				 well. It shall also be fitted with a pitless adaptor. All well covers
				 must have sanitary seals.
5. Potable water must be used for
				 priming all pumps.
6. The
				 electrical wiring used in connection with the pump shall conform to
				 the current specifications of the Rhode State Electrical Code (SBC-   5).
7. The pump installer
				 shall disinfect a well subsequent to installation of a pump to the
				 standards.
6.24.7
Standards for Wells
				 in Unconsolidated Materials
A. Any well, constructed to obtain
				 water from an unconsolidated rock formation shall be equipped with a
				 screen, for the purpose of preventing the entrance of formation
				 material into the well after the well has been developed and
				 completed.
B. The well
				 screen shall:
1. Be of a standard
				 design and manufacture, for the specific purpose of well
				 construction;
2. Be made
				 of material adequate to withstand normal physical and chemical
				 forces, applied to it during and after installation;
3. Have openings free of rough
				 edges, irregularities, or other defects that may contribute to
				 corrosion or clogging; and
4. Be provided with such fittings
				 as are necessary to seal the top of the screen to the casing and to
				 close the bottom, and in no case shall fittings be made of
				 lead.
C. Any
				 well, constructed in very coarse gravel largely free of fines, shall
				 not, however, be required to have a screen; or, if a screen is used,
				 the bottom may be left open.
D. Jetted or washed wells shall not
				 be terminated in unconsolidated materials unless an adequate quantity
				 of water free from fine soil particles can be withdrawn.
E. To allow for grouting,
				 unconsolidated wells shall have an upper drill hole 3" or 4" greater
				 in diameter than the nominal diameter of the permanent well casing,
				 depending on the type of grout.
F. In all cases, cases a minimum of
				 18 feet of casing and casing seal will be required.
6.24.8
Standards
				 for Artesian Wells
A. To
				 allow for grouting, unconsolidated wells shall have an upper drill
				 hole 3" or 4" greater in diameter than the nominal diameter of the
				 permanent well casing, depending on the type of grout
B. Watertight unperforated casing
				 shall extend and be sealed at least 5' into the confining formation
				 immediately overlying the artesian water-bearing zone.
C. In all cases a minimum of 18
				 feet of casing and casing seal will be required.
D. If a well flows at the land
				 surface, the well shall be equipped with a watertight mechanical cap,
				 threaded or welded, and a control valve, so that all flow of water
				 from the well can be completely stopped.
E. All flowing artesian wells shall
				 be tested for artesian shut-in pressure in (psi) and rate of flow in
				 ft/sec., or gal/min. under free discharge conditions. This data shall
				 be reported on the well report.
6.24.9
Standards for Drilled
				 Rock Wells
A. To allow for
				 grouting, drilled rock wells shall have an upper drill hole 3" or 4"
				 greater in diameter than the nominal diameter of the permanent well
				 casing, depending on the type of grout.
B. The bottom of the casing shall
				 be set securely into the rock in a manner which is adequate to
				 prevent fluids, contaminations, or rock material from the ground
				 surface or from any zone from entering the well.
C. All wells drilled into bedrock
				 shall be completed with water tight casing and casing seal to a
				 minimum depth of 18 feet below the land surface and no less than 5
				 feet into the bedrock.
D.
				 A drive shoe may be used to assist in sealing the casing into
				 bedrock.
E. When plastic
				 casing is used, the seal shall be created by the use of a
				 Jaswell-type seal tip, shale packer or equal.
F. When a well is re-cased for the
				 purpose of shutting off undesirable water or sand, a Jaswell-type
				 seal tip shall be used, and the annular space be grouted with an
				 acceptable material.
G. A
				 tapered hole to receive the outer diameter of the plain end casing is
				 acceptable.
H. When
				 bedrock is encountered within 10 feet, air may be used to lift the
				 cuttings from the bore hole. However, when the depth to bedrock is
				 greater the cuttings must be removed by slurries mudding method which
				 will then insure the annular space to be free from voids to allow for
				 proper grouting.
6.24.10
Construction of
				 Shallow Wells in Unconsolidated Materials by Excavation (Dug
				 Wells)
A. Dug wells are
				 prohibited for new private and public drinking water systems but are
				 permissible for other uses.
1. For
				 situations where no other alternatives exist and such prohibition
				 would be the sole factor in rendering the subject property
				 non-buildable, application may be made to the Board for a variance to
				 allow a dug well to be utilized as a private drinking water
				 source.
B. The
				 following standards pertain to repairs to existing dug wells that can
				 be repaired to the extent required to maintain source potability.
1. Upper joints in well casings
				 shall be sealed to exclude surface and near surface water from
				 entering the well.
2. The
				 bottom of the casing shall be set on a bed of clean crushed stone or
				 naturally occurring coarse gravel, if present.
3. Crushed stone shall be placed
				 around the exterior of the casing at the bottom section(s) to promote
				 infiltration of water and provide additional storage, if appropriate
				 for the soil conditions at the site.
4. Backfill shall be of an
				 appropriate material and placed in a manner which will deter
				 intrusion of soil into the well and reduce the likelihood of surface
				 waters percolating directly into the well through the
				 backfill.
5. Organic
				 material shall not be used in the backfill including but not limited
				 to: loam, peat, building paper, hay, or soil with organic
				 matter.
6. Pea stone or
				 other non-polluting barriers shall be used over the crushed stone to
				 prevent fine soils from entering the crushed stone.
7. Backfill shall be compacted to
				 reduce settlement.
8. The
				 top of the backfill shall be covered with at least 2 feet of
				 impervious material such as clay.
9. The ground surface at the well
				 should be raised and graded to drain away from the well taking into
				 consideration future settlement of the backfill.
10. The dug well shall be provided
				 with a watertight cover constructed of a single integral material so
				 as to prevent sources of contaminants from entering the
				 well.
6.24.11
Casing
A. The casing material used on all
				 water wells shall be of such strength and composition as to prevent
				 the movement of water or contaminants into or out of the well in the
				 interval so cased; and shall not distort, deform, collapse, crack, or
				 disintegrate under normal conditions for the life of the well, or
				 contaminate the water in the well.
B. The casing shall be adequate to
				 provide for the installation, removal, and maintenance as appropriate
				 of caps, pitless adaptors, screens, pumps, pipes, wires, or other
				 devices which may be used throughout the normal life of the
				 well.
C. Casing shall
				 prevent intrusion of contaminants from the ground surface or
				 unconsolidated soil layers into the well.
D. Steel well casing shall have a
				 minimum wall thickness of 0.237 inches for wells drilled in bedrock
				 and deep wells in unconsolidated materials.
E. Well casings shall have an
				 airtight cover with a sanitary seal, and a screened vent to prevent
				 the entrance of foreign matter into the well.
F. Well casing shall extend above
				 the ground surface a minimum of 18 inches. In areas prone to
				 flooding, additional casing heights must be installed to prevent
				 entrance of surface water. Wells that serve public water system must
				 adhere to the requirements of 216-RICR- 50-05-1.
G. The above requirements do not
				 preclude the use of additional protection measures.
6.24.12
Grouting
				 annular space
A. Public
				 Wells: Well grouting for all public drinking water wells shall be in
				 accordance with 216-RICR- 50-05-1.
B. Private Wells: Well grouting for
				 all private drinking water wells may be accomplished as follows:
1. In cases where no more stringent
				 standards are required, and there is no evidence of existing or
				 potential contamination sources or excessively corrosive condition
				 and the natural materials contain a significant proportion of
				 naturally impervious materials mixed with drilling mud, the driller
				 may fill the annular space with the natural materials excavated
				 during the drilling of the well to meet the following requirements:
a. The annular space shall be
				 fitted as completely as possible from the bottom or the casing to the
				 land surface without any depressions, voids, holes or
				 channels;
b. The driller
				 shall employ whatever techniques are effective for the existing
				 conditions to achieve maximum density, strength and impermeability of
				 the fill material; and
c.
				 The surface of the fill material shall be sloped away from the
				 casing.
2. In
				 cases where potentially contaminating or corrosive fluids are
				 encountered, or impermeable natural materials cannot be adequately
				 placed and compacted or where geologic conditions or the isolation
				 distance may not be adequate, the annular space shall be grouted for
				 the full length of the casing, or the portion thereof below the frost
				 line or pitless adaptor, so that no fluids may move in the zone
				 needing to be grouted.
3.
				 In cases where frost heaving is likely, the annular space from the
				 frost line to the ground surface may be filled with compacted
				 granular fill to reduce the potential for frost heaving of the
				 casing. The casing shall be securely supported by the surrounding
				 fill material to a degree that it cannot be moved by manual
				 means.
4. In no case will
				 a driller leave a completed well with water flowing or standing in
				 the annular space.
6.24.13
Maintenance, Repair,
				 and Deepening of Wells
A.
				 Valves and casing on all artesian wells shall be maintained in a
				 condition so that the flow of water can be completely stopped when
				 the water is not being put to beneficial use. All casing, liner pipe,
				 and casing seals shall be maintained in a condition that will prevent
				 surface or subsurface leakage of groundwater. Valves shall be closed
				 when water is not being put to beneficial use. During period of
				 subfreezing temperatures, care shall be taken to prevent damage due
				 to freezing. The pressure gauge and petcock valve shall be maintained
				 so that the artesian pressure can be accurately determined at any
				 time.
B. If in repair of
				 a drilled well the old casing is withdrawn, the well shall be
				 re-cased and resealed.
C.
				 The access port or airline on all wells shall be maintained in a
				 condition that will prevent contamination of the water body. Access
				 ports and air lines shall be maintained so that the position of the
				 water table can be determined at any time.
D. In no case shall a dug well be
				 deepened, unless the deepening is for the purpose of developing a
				 bedrock or gravel packed drilled well. This is allowed only if the
				 siting requirements listed in § 6.22.6 of this Part preclude the
				 development of a drilled well elsewhere on the property.
6.24.14
Temporary
				 Removal from Service
Any well to be temporarily removed from service,
					 either due to a recess in construction or before commencing service,
					 shall be capped with a watertight seal, watertight welded steel cap,
					 or threaded cap. In the event that temporary removal from service is
					 to be more than 90 days or more, the temporary steel cap must be
					 welded to the well casing with a minimum of four (4) separate welds,
					 evenly spaced, each at least 1/2 of an inch in length. Steel or
					 cast-iron caps shall be at least 3/16 of an inch in thickness.
6.24.15
Decommissioning of Wells:
A.
				 Abandoned wells, test wells and bores must be
				 decommissioned.
B.
				 Decommissioning of all potable water wells and potable test wells and
				 bores associated with a private well shall be in accordance with
				 216-RICR- 50-05-1 and the following:
1. The well shall be disinfected
				 prior to decommissioning in accordance with§ 6.22.18 of this
				 Part.
2. All casing and
				 screen materials that have salvage value may be removed by the
				 contractor.
3. Upon
				 completion of abandonment of the well, the top of the casing or grout
				 material shall be terminated at least four (4) feet below the ground
				 surface.
C.
				 Decommissioning of ground water monitoring wells, piezometers, and
				 others subsurface borings shall be done in compliance with 250-RICR-
				 150-05-03.
D.
				 Decommissioning of a geothermal well shall be performed only by a
				 licensed well driller.
6.24.16
Record of
				 Wells
Within ten (10) days after completion of a new,
					 reconstructed, replacement or decommissioned well, whether attached
					 to an existing building or planned building, the licensed well
					 contractor shall provide the owner, the Building Official and the
					 Department of Health, a Well Completion Report on a form obtained
					 from the Department of Health, completed in its entirety in
					 accordance with R.I. Gen. Laws §
												46-13.2-5.
6.24.17
Electrical/Plumbing
Any licensed person or entity under these
					 regulations may perform electrical and/or plumbing work as defined in
					 the definitions of Rhode Island General Law
					 5-65.2-2 in
					 relation to the work performed pursuant to these regulations and R.I.
					 General Law. Nothing herein shall prohibit any Rhode Island licensed
					 electrician or plumber from performing similar work. All electrical
					 or plumbing work performed shall meet the State of Rhode Island;
					 electrical code (SBC-   5) and plumbing code (SBC-   3).
6.24.18
Disinfecting
Disinfecting shall be accomplished in accordance
					 with the Rhode Island Department of Health well disinfection
					 guidelines.
6.24.19
Drilling
				 Depths
A. For the use of
				 individual household, bedrock well of 6 inches in diameter shall be
				 satisfactory when it meets the following minimum criteria:
1. With a yield of 5 gpm, a minimum
				 depth of 100' or less is required.
2. With a yield of 3 1/2 gpm, a
				 minimum depth of 150' is required.
3. With a yield of 2 gpm, a minimum
				 depth of 200' is required.
4. With a yield of 1 gpm, a minimum
				 depth of 300' is required.
5. With a yield of 1/2 gpm, a
				 minimum depth of 450' is required.
B. This is assumed that the static
				 water level is between 25 and 35 feet and the pump has been
				 appropriately set to insure maximum productivity. The above is
				 intended as a construction standard and does not imply or guarantee
				 actual yield.
C. Special
				 caution should be exercised in coastal areas because of potential
				 saltwater intrusion.