WELL DRILLING AND CONSTRUCTION

Ken Bousfield, P.E.

Utah Division of Drinking Water

BASIS FOR RULES:

–Same as for springs: Plan review (Primacy)Engineering principlesExperience

PLAN REVIEW PROCESS:

– Prior to Drilling Drilling Specifications

– After DrillingChemical AnalysisSource CapacitySource ProtectionEquipping Specifications

WELL DRILLING SPECS:

– Drilling Method– Surface Seal – Plumbness and Alignment– Construction Materials

WELL EQUIPPING:

– Type of Pumps– Pitless Adaptors– Pump Capacity– Appurtenant Equipping– Well House Construction

Well SystemINCOMING POWER

DISCONNECT

MOTOR

STORAGERESERVOIR

PUMP BOWLS- BELOW PUMPING LEVEL

CONE OF DEPRESSION

CONCRETESANITARYSEAL

WATER BEARING SAND

WELL CASING

WELL GROUT100 FT/MINIMUM

PUMPING LEVEL

IMPERVIOUS FORMATION (ROCK,CLAY,OTHER DENSE MATERIAL)

DRAWDOWN

STATIC WATER LEVEL- WATER TABLE

SCREEN

SPIDER,BEARING,& COUPLING

IMPELLERS

RADIUS OFINFLUENCE

STUFFING BOXSHAFT SLEEVEPACKING OR MECHANICAL SEALPACKING GLANDPACKING ADJUSTMENT NUTSSEAL WATERLANTERN RING

FLOW TO WASTE

DISCHARGE LINE

VALVES

DESANDER

FLOOR DRAIN TO DAYLIGHT

AIR VAC W/#14 MESH SCREEN& TURNED DOWN

LUBRICATION-FOOD GRADE MINERAL OIL AND FOOD GRADE GREASE

PSI GAUGE

CHECK VALVE

OILER

WELL VENTW/#14 MESH

WELL GROUTING:

SUBMERGED WELL:

PITLESS ADAPTOR:

PITLESS ADAPTOR:

CONVERTED SUBMERGED WELL:

WELL HOUSE PIPING:

WELL HOUSE PIPING:

WELL HOUSE CONSTRUCTION:

– Heating– Ventilation– Drainage– Treatment

STORAGE CAPACITY ISSUES:

– Average Day Use in gallons (gal)Residence: 400galPicnic/Park: 5gal/personVisitor’s Center: 5gal/personCampground Hydrant: 35gal/person

– ADD FIRE FLOW TO VOLUMES

DISTRIBUTION CAPACITY ISSUES:

– Peak Instantaneous UseEngineering Hydraulic Network

Analysis20 psi minimum pressure under all

conditions