FUTURE IMPLICATIONS OF UTILIZING DEDICATED PUMPS FOR ... · MATERIALS MATERIALS* Note this is a one time cost -100 feet 3/8 I.D. Poly Tubing per well .25 per foot -100 feet 3/8 I.D

FUTURE IMPLICATIONS OF UTILIZING DEDICATED PUMPS FOR

GROUNDWATER SAMPLING / MONITORING

Presented by:

Christine Batchelder

Groundwater Essentials

Bradenton, FL

WHAT WE WILL COVER

• What is low-flow, dedicated sampling.

• What are the advantages.

• Why should I dedicate.

• What do my regulations say.

• Is it right for my industry.

• How to promote dedication to your clients.

Presented by: Groundwater Essentials

And most importantly…

How much money can I save? Presented by: Groundwater Essentials

We cannot forget…

What about the environment? Presented by: Groundwater Essentials

DEDICATED LOW FLOW SAMPLING

• EPA 542-S-02-001 – Purpose “The purpose of this standard operating procedure (SOP) is to provide a method that minimizes the impact the purging process has on the ground-water chemistry and the volume of water that is being purged and disposed of during sample collection.”



• EPA 542-S-02-001

– Purpose

“The flow rate at which

the pump will be operating

will depend upon both

hydraulic conductivity of

the aquifer and the

drawdown with the goal of

minimizing the

drawdown.”



• EPA 542-S-02-001

– Scope

“It is critical to place

the pump intake in the

exact location or depth for

each sampling event. This

argues for the use of

dedicated, permanently

installed, sampling devices

whenever possible.”


DEDICATED LOW FLOW SAMPLING*

• EPA 542-S-02-001 – Purging and Sampling

Procedures. “The following describes the purging and sampling procedures for the Low-Stress (Low-Flow)/ Minimal Drawdown method for the collection of ground-water samples. These procedures also describe steps for dedicated and non-dedicated systems.”


LOW FLOW DEDICATED PUMP PROCEDURE

1. Check and record the condition of the monitoring well. 2. Unlock well head. Record appropriate information. 3. Remove inner casing cap. 4. Monitor the headspace for VOC’s. 5. Measure depth to water. 6. Record well depth. 7. Record depth of pump intake. This will remain constant with a dedicated

pump. 8. Measure water level. 9. Connect discharge line and flow-through cell. 10. Start pumping. Monitor and record water level and pump rate every

three to five minutes. 11. Monitor and record water-quality-indicator parameters. 12. Maintain stabilized drawdown. Start Sampling. 13. Close and lock well.


BENEFITS FROM DEDICATION

1. Pre-field Preparation– Dedicated equipment means no ordering, no shipping and NO PREDEPLOYMENT.

2. Travel to Site – Dedicated equipment means less equipment and supplies to carry and fewer trips to the site.

3. Sample – Dedicated pumps eliminate more than half the listed steps from the procedure.

4. Post Sampling – Dedicated pumps eliminates both decontamination & equipment removal and drastically reduces waste management.


Sample Tasks - ELIMINATED

• ELIMINATED – DEPLOYMENT

• Lowering the pump causes disturbance and requires time.

– PURGING • Purge related costs are reduced directly by the amount of purge

water not required.

– SAMPLE TASKS • Need for equipment blanks are eliminated.

• Removal of sampling equipment is eliminated.

• Disposal of down hole tubing is eliminated.

– DECONTAMINATION • The entire procedure is eliminated. Supplies and equipment needed

are reduced.


WHY SHOULD I DEDICATE

1. Most environmentally conscious decision. – Waste Considerations. – Sustainability.

2. Most scientifically backed decision. – Sample Integrity. – Sample Consistency.

3. Least difficult method. – Less Time Involved, less procedures. – Less Effort.

4. Least expensive. – Life Cycle Cost is Predictable. – Purge Disposal Quantity is consistent.


What do my regulations say?

• EPA/540/S-95/504 April 1996 – If the sampling device is already in place (i.e., dedicated

sampling systems), then the time and purge volume needed for stabilization is much shorter.

– Other advantages of dedicated equipment include less purge water for waste disposal, much less decontamination of equipment, less time spent in preparation of sampling as well as time in the field, and more consistency in the sampling approach which probably will translate into less variability in sampling results.

– “The use of dedicated equipment is strongly recommended at wells which will undergo routine sampling overtime.”



• Ground-Water Sampling Guidelines for Superfund and RCRA Project Managers EPA 542-S-02-001 – “Dedicated sampling systems are greatly preferred

since they avoid the need for decontamination of equipment and minimize turbulence in the well.”

– “Dedicated sampling pumps are recommended for metals sampling because the pumps avoid the generation of turbidity from frequent sampler deployment.”

– “The preferred method is to use dedicated sampling equipment whenever possible.”



• AFCEE - Air Force Long-Term Monitoring Optimization Guide

– “Regardless of the techniques used, dedicated equipment should be considered. Dedicated equipment can reduce the volume of water used for decontaminating sampling equipment, which is required for disposal, and the time required to decontaminate the sampling equipment.”



• Equipment Blanks

– “Equipment blanks should be collected on a regular basis from non-dedicated equipment, the frequency depending on the sampling plan and regional protocols, to document the effectiveness of the decontamination procedures.”


Industry Considerations

• Landfills, Power Generation, Manufacturing, Agriculture, Mining, Hazardous Waste, Federal & Military, Superfund.

Sites which will have long term monitoring by their nature.

•ALL SITES! Sites which

require sample integrity and consistency.


Client Motivation

Saves Time and Money

Improves Sample Integrity

Reduces Waste

Performance Based Contracts

Reduces Liability

Equipment & Training Consistency


Money, Money, Money

• Initial Equipment Costs

• Equipment Lifetime Cost

• Maintenance Requirements

• Operational Requirements

– Energy Cost

– Waste Cost

– Professional time needed for managing the process


FACTORS

• Waste – What is NOT needed when you dedicate with a 12 volt low flow pump system

– Decontamination (decon waste)

– Purge Water (disposal)

– Materials (consumable samplers & accessories)

– Energy (power & logistics)

– Time (this is priceless)



TIME TAKEN TO DEPLOY PORTABLE PUMP TIME TAKEN TO INSTALL DEDICATED PUMP

-20 minutes per well - deployment & removal -10 minutes per well - deployment only

20 minutes x 20 wells x 4 times a year 10 minutes x 20 wells x 1 times a year

TIME TAKEN TO PURGE (RATE 1 gpm) TIME TAKEN TO PURGE (RATE .132 gpm)

-49 minutes per well based on 5 case volume -(2 GALLON total purge volume to stabilize)15 minutes per well based on 2 Gallons


TIME TAKEN TO DECONTAMINATE TIME TAKEN TO DECONTAMINATE

-5 minutes per pump* -THIS STEP IS ELIMINATED

5 minutes x 20 wells x 4 times a year

PURGE & DECON WATER DISPOSAL PURGE & DECON WATER DISPOSAL

-49 gallons/purge + 15 gallons/decon* -2 gallons/purge

64 gallons x 20 wells x 4 times a year at $1 per gallon 2 gallons x 20 wells x 4 times a year at $1 per gallon

MATERIALS MATERIALS* Note this is a one time cost

-100 feet 3/8 I.D. Poly Tubing per well .25 per foot -100 feet 3/8 I.D. Poly Tubing per well .25 per foot

100 feet x 20 wells x 4 times a year at 25 cents per foot 100 feet x 20 wells x 1 time at 25 cents per foot

-5 gallons deionized water per pump*+ -DEIONIZED WATER IS ELIMINATED

5 gallons x 20 wells x 4 times a year at $1.50 per gallon

-1 each equipment blank -EQUIPMENT BLANKS ARE ELIMINATED

1 blank x 4 times a year at $800 per screen

1Your Costs May Vary

*based on RCRA & Superfund SOPS

+does not include cleaning materials

Note: Other items not included that can be considered constant are; on site

purge water handling, transportation to and from the site, etc.

SITE ANALYSIS INCLUDES 20 WELLS SAMPLED 4 TIMES A YEARWELL DEPTH 100' / DEPTH TO WATER 40' / 2" DIAMETER / ONE CASE VOLUME EQUALS 9.78 GALLONS

NON-DEDICATED PUMP SYSTEM

26.67 Hours

2 men @ $45

$3,200 $04 Blanks

1 YEAR TIME SPENT SAMPLING 98.33 hrs. 1 YEAR TIME SPENT SAMPLING 23.33 hrs.

6.67 Hours 0 Hours

400 Gallons

2 men @ $45

5,120 Gallons 160 Gallons

2,000 Dollars 500 Dollars

$600 $0

$5,120 $160

$600

$500

$0

$2,400 3.33 Hours $150

1 YEAR TOTAL COSTS $19,770 1 YEAR TOTAL COST $1,710

$2,000

2 men @ $45 1 man @ $45

1 man @ $45

65 Hours $5,850 20 Hours $900

CHART #1 - ONE YEAR COMPARISON NON-DEDICATED AND DEDICATED PUMPS - PURGING AND DECONTAMINATION1

NON-DEDICATED PUMP

SYSTEM

Submersible Centrifugal or Bladder Pump

DEDICATED PUMP SYSTEM DEDICATED PUMP SYSTEM

TIME MONEY TIME MONEY


TIME TAKEN TO DEPLOY PORTABLE PUMP TIME TAKEN TO INSTALL DEDICATED PUMP

-20 minutes per well - deployment & removal -10 minutes per well - deployment only


TIME TAKEN TO PURGE (RATE 1 gpm) TIME TAKEN TO PURGE (RATE .132 gpm)

-49 minutes per well based on 5 case volume -(2 GALLON total purge volume to stabilize)15 minutes per well based on 2 Gallons


TIME TAKEN TO DECONTAMINATE TIME TAKEN TO DECONTAMINATE

-5 minutes per pump* -THIS STEP IS ELIMINATED

5 minutes x 20 wells x 4 times a year

PURGE & DECON WATER DISPOSAL PURGE & DECON WATER DISPOSAL

-49 gallons/purge + 15 gallons/decon* -2 gallons/purge

64 gallons x 20 wells x 4 times a year at $1 per gallon 2 gallons x 20 wells x 4 times a year at $1 per gallon

MATERIALS MATERIALS* Note this is a one time cost

-100 feet 3/8 I.D. Poly Tubing per well .25 per foot -100 feet 3/8 I.D. Poly Tubing per well .25 per foot

100 feet x 20 wells x 4 times a year at 25 cents per foot 100 feet x 20 wells x 1 time at 25 cents per foot

-5 gallons deionized water per pump*+ -DEIONIZED WATER IS ELIMINATED

5 gallons x 20 wells x 4 times a year at $1.50 per gallon

-1 each equipment blank -EQUIPMENT BLANKS ARE ELIMINATED

1 blank x 4 times a year at $800 per screen

1Your Costs May Vary

*based on RCRA & Superfund SOPS

+does not include cleaning materials

PURCHASE OF PORTABLE EQUIPMENT PURCHASE OF DEDICATED EQUIPMENT

-Pump average $3,500 -Pump $545 Controller $1095 Extended Warranty $150

Based on a Five Year Full Warranty

CHART #3 - FIVE YEAR COMPARISON NON-DEDICATED & DEDICATED PURCHASED PUMPS

SITE ANALYSIS INCLUDES 20 WELLS SAMPLED 4 TIMES A YEARWELL DEPTH 100' / DEPTH TO WATER 40' / 2" DIAMETER / ONE CASE VOLUME EQUALS 9.78 GALLONS

NON-DEDICATED PUMP

SYSTEM

Submersible Centrifugal or Bladder Pump

DEDICATED PUMP SYSTEMNON-DEDICATED PUMP SYSTEM DEDICATED PUMP SYSTEM

TIME MONEY TIME MONEY

Includes pump & controller (submersible) or pump &

bags (bladder) 3,500 Dollars 15,145 Dollars

$3,500 $15,145

5 YEAR TOTAL COSTS $102,350 5 YEAR TOTAL COST $23,695

5 YEAR TIME SPENT SAMPLING 492 hrs. 5 YEAR TIME SPENT SAMPLING 117 hrs.

26.67 Hours $2,400 3.33 Hours $1502 men @ $45 1 man @ $45

65 Hours $5,850 20 Hours $9002 men @ $45 1 man @ $45

6.67 Hours $600.00 0 Hours $02 men @ $45

$5,120 $1605,120 Gallons 160 Gallons

$2,000 $5002,000 Dollars 500 Dollars

$600 $0400 Gallons

$3,200 $0

4 Blanks

Note: Other items not included that can be considered constant are; on site

purge water handling, transportation to and from the site, etc.

ON SITE PURGE WATER HANDLING


ONE 55 GALLON DRUM OR 500 GALLON TANK ON TRAILER

WASTE DISPOSAL IMPLICATIONS

TOTALS

• There are approximately 2.8 million monitoring wells in the US.

• It is estimated approximately one-quarter of that number have the potential use of dedicated pumps.

• 700,000 monitoring wells are purged.

FUTURE IMPLICATION

• Based on the previous site analysis, a minimum of 19 gallons of purge waste water and 15 gallons of potable waste water per well could be saved.

• THIS TOTALS 95.2 MILLION GALLONS OF WASTE WATER EACH YEAR. (Based on 4 samples per year).


Lasting Thoughts

• If the 150,000+ gas stations in the US used dedicated pumps - they would save landfill disposal of 60 million feet of tubing EACH YEAR.

• STORET and NWIS databases show approximately 172,000 wells under 180 feet, these wells could save 155 Million Dollars in ONE YEAR.


Lasting Thoughts

• There are more than 650,000 injection wells in the US. If each had ONE monitoring well – more than $ 500 MILLION dollars in unnecessary equipment blanks could be saved IN 1 YEAR!

• - more than 195 million feet of tubing

• - more than 13 million gallons of deionized water

• - more than 2.4 million man hours

• YES ALL THIS IN ONE YEAR!


In Cooperation with…

GROUNDWATER ESSENTIALS PROACTIVE ENVIRONMENTAL PRODUCTS


Special Thanks to:

Points of Contacts

• For more information;

– Groundwater Essentials

– 5245 Office Park Blvd. Ste 102

– Bradenton, FL 34203

– 1-866-947-8677

– www.groundwateressentials.com

– [email protected]


http://www.groundwateressentials.com/

mailto:[email protected]

Documents

FUTURE IMPLICATIONS OF UTILIZING DEDICATED PUMPS FOR ... · MATERIALS MATERIALS* Note this is a one time cost -100 feet 3/8 I.D. Poly Tubing per well .25 per foot -100 feet 3/8 I.D