Field Procedures

This is a sample of a recommendation for chemistry and field procedures that is available to you for your specific well or pipeline problems. It can cover slime forming bacteria, mineral scale, silt infiltration, or chlorination. There is a contact button at the bottom of this sample for you to supply us with specific information. A "Field Procedure" will be E-mailed or faxed to you that will give you our recommendations for treatment.

SAMPLE
Field Procedure
(1st page only. Most reports are 3-5 pages with explanations)

To: Customer Name
From: David Hanson
Comments: A "Sludge/Debris Analysis" was done which indicated this debris was bacterial related and easily dissolved. This is a limestone well so acidic chemistry will dissolve cementation in the formation. Monitor pH and coloration of chemistry reaction to understand when chemistry changes from bacterial debris which is iron related (yellow coloration) to the actual formation (brown/tan coloration).

Well #

N/A

Well & Screen Information
Diameter/Saturated Thickness
5" dia, 173" td w/81 swl
183' - 81' = 92'

Initial Treatment
Product Recommended
"Unicid" Granular:
0.5 lbs/ft x 92' = 45 lbs
"Unicid" Catalyst:
0.05 gal/ft x 92' = 4.5 gal

For PH Adjustment
30% of initial Granular
15lbs per adjustment not necessary for adj.

Total chemistry est. for well IF 3 pH adjustments are required.
(Check with our distributors regarding returns of unused/undamaged containers.)
"Unicid" Granular: 40 lbs + (3 x 15) = 85 lbs estimated
"Unicid" Catalyst: 4.5 gallons total for well

Recommended Procedure for cleaning the well.
Step 1	Pull pump. Wire brush the casing/screen 4-5 times. Airlift all debris from the bottom of the well with an airline/air compressor. This is done in one step with our "WireHog" casing brush. If site cleanliness or containment is a concern, a "FernCo" coupling can be used with a "T" and horizontal piping to vent debris away from the well or into a disposal container.
Step 2	Install initial dosage of chemistry. In this case, simply pour 45 lbs of Granular into the well from surface. Follow by pouring 4.5 gal of Catalyst into the well.
Step 3	Start development immediately. We recommend a surge block to facilitate two directional development into the formation. A vertical block speed of 2-3' per second is critical to gain movement during the development process. With a low static as this, an airline lifting chemistry upwards in the well without blowing out of the well would work well.
Step 4	With the available limestone in this well and the potential for loss of chemistry through large fractures, monitor pH and color within 2 hours after start of development with a ball check/dart bailer. If less than 3, the chemistry is remaining within the borehole. If above 4.5-5, the chemistry is being lost to the flow of the aquifer and the chance this treatment will not work. As chemistry dissolves debris, pH will rise naturally within 3 hrs. When pH rises above 3.0, adjust pH by adding 30% of just the Granular (15 lbs). We recommend to have enough Granular on site for 3 adjustments. Place Granular as you did with the initial dosage. Continue to surge, monitor pH/color every 3-4 hrs, and adjust accordingly. Before leaving site in PM, always check pH and adjust if above 2.5. In AM, always surge for 20- 30 min before checking pH to mix chemicals in well. If lower than 3, continue to surge and monitor in two hours. Adjust accordingly. When pH remains below 3.0, job is complete as chemistry doesn't have any debris to dissolve. You should initially see a yellow color to the chemistry (iron). When dissolving the limestone (tan or brown), adj pH only one more time. At that time, when the aquifer is open, you may see a rapid rise in ph which indicates an open formation. The cleaning process is then done.
Step 5	Air lift all debris from the very bottom of the well. You can again, use a "T" and divert acids into a tank for disposal. Airlift until water is clear and pH is normal. Reset the pump and test for comparison results. Check for normal pH before connecting into the system.
Step 6	All chemicals can be land disposed as is non hazardous and totally biodegradable within 27 days. The calcium in soil will neutralize the chemistry. BEWARE, any chemistry at a pH below 5.0 will potentially kill plants. If chemistry is required to be neutralized prior to disposal to land surface, sanitary sewer, storm sewer, or an environmental treatment system, pH Neutralize (liquid) can be mixed into chemistry (surface tank) for proper disposal. Estimated product to neutralize is 5 gallons for this well. All ingredients are totally biodegradable and non hazardous.
	I've calculated the buried line first to see if enough solution to clean the pump. Use the amounts in cleaning pipelines. (See below)
Recommended Procedure for cleaning the pump. (Any chemistry required for cleaning the pump is not calculated previously in pg 1.)
We highly recommend to clean the pump in a slime or iron bacteria situation. It doesn't make much sense to re-infect a clean well with a slimy pump and can be done while cleaning the well. If you are cleaning just the pump and submersible cable, only use enough water for submergence for both. For domestic submersible pumps, a small stock tank or a 30 gal garbage can works great. If you are cleaning buried lines on this project, calculate the amount of water to be used for that (See below). If there is enough submergence to clean the pump as well, mix now, clean the pump, and use the same chemistry for the buried lines after the well cleaning. This can be done while cleaning the well to save time.
Step 1	Set pump and cable into solution. Let set for 2 hours.
Step 2	Lift discharge end and install a short nipple into the discharge. Use two elbows to return discharge to tank. Take electrical end of sub pump cable and connect into starter box. Energize until discharge is clean. Submerge pump for a second 2 hours. Repeat process. Submerge again for 1-2 hours and repeat process or until discharge is clean. You can also clean misc parts like spools for pitless adapters, watering nozzles, etc in this solution. When done store pump/cable in a clean area and wrap with plastic.
We recommend to install new drop pipe on domestic applications because it's difficult to clean and cheaper to replace. NOTE: DO NOT SET NEW PIPES/CLEANED PUMPS, PIPES, OR SUB CABLE DIRECTLY ON GROUND BEFORE INSTALLATION FOR POTENTIAL OF RE-CONTAMINATION.

Recommended Procedure for cleaning buried water lines
We recommend cleaning horizontal piping when there is more than 20% of the pipe is plugged. If less than 20% plugged, pumping water with low bacterial counts (< 100 colonies/ml) after cleaning with Unicid will actually clean the piping system within 3-4 months. We have a pipe volume chart in our brochure, "Cleaning Wells & Pipelines" available on our web site under "Literature" or call. A work sheet is also available.
Step 1	Estimated buried line is 1/25" x 250' in length or .08 gal/ft x 250' = 20 gal. Include piping inside the building with this total. Estimate 30' of interior piping of 1.25" diameter or .08 gal/ft x 30' = 2.4 gal. Run surface lines (coiled PVC or even garden hose) from the end of buried line to return chemistry back to the mix tank (used to clean pump). Using 1/25" x 250' = 20 gallons.
Step 2	Calculate total water in all lines (buried, in buildings, surface return lines) = 42.4 gal. Add 20% (divide total gallons in lines by .8) for mix water in the tank for total gallons or 42.4 ÷ .8 = 50 gal total. Use any standard tank for mixing. This tank can be in the basement if that's better mixing conditions. Multiply total gallons by .3 lb/gal for total Granular = 15 lbs and multiply 50 gal water x .04 gal/gal for total = 2 gal Catalyst. Mix Granular into total water and circulate with any pump to mix. Add Catalyst to this mixture and circulate to mix all chemistry.
Step 3	Connect to buried lines through the pitless adapter (for submersible pumps). Some spools for pitless adapters can simply be turned upside down and reset with a pipe to surface. Others may have to be plugged on the bottom, and drill/tap a hole in top of spool for the stand pipe to surface. Others may require an elbow and short nipple with elbow to bring a pipe to surface. Connect stand pipe with flexible hose to the discharge of pump. Connect all surface piping back to mix tank.
Step 4	Start pump in tank and circulate chemistry into buried lines in opposite direction of normal flow. Dispose of normal pH water on ground or sewer until pH drops drastically. Recirculate chemistry. You may notice sludge/debris initially being pump which will settle in the tank. Measure time on a single line to fill a quantity of water. Volume will increase as lines open. When the volume doesn't increase, the line is clean. pH adjustment should not be required. You can physically inspect pipes for removal of debris.
Step 5	Circulate water through all lines. Do not discharge any chemistry to sewage or septic systems. Neutralize if necessary and dispose of accordingly.
Step 6	Reset pump. Pump water through all lines until clear. CHECK PH AT AT ALL POINTS IN THE SYSTEM TO MAKE SURE IT'S NORMAL.

Chemistry Totals Well Buried pipe/pump Totals	"Unicid" Granular 85 lbs (est)* 15 lbs 100 lbs	"Unicid" Catalyst 4.5 gal 2 gal 6.5 gal	"pH Neutralize" 5 gal 2 gal 7 gal
* May not take this much. Depends on debris outside the formation that can't be reach by the wire brush.

Time Estimate .5 days .5 days .5-1 day .5-1 day	Pull pump, wire brush, airlift all debris Install chemistry, 4 hours of development, monitoring pH, adjustment if necessary, cleaning pump simultaneously. Surge chemistry, adj pH if necessary, airlift all chemistry from well. Clean buried pipelines, reinstallation of pump, pumping through system, checking normal pH.
2-2.5 days	Total estimated time.

For specific procedures on your well, contact us.

Well Rehab by Design, not by accident.

Design Water Technologies
5920 Covington Road
Shorewood, MN 55331
P: 952-474-4657 | F: 952-470-6637 | Toll Free: 888-437-6426

Website Designed by WISSH Graphics