BESST, Incorporated stands for Best Environmental Subsurface Sampling Technologies. We are a groundwater technology and services company that specializes in groundwater wells and exploratory boreholes. Since 1999, we have passionately pursued our mission to design, develop, build, and deploy forensic, technically minded, miniaturized, subsurface-based technologies for solving groundwater quality and quantity problems in innovative and cost-effective ways.
We strive to say “yes” to a wide variety of challenges offered by our customers that drive our core strengths – research and development followed by practical, real-world implementation. We are excited to undertake new challenges. Your success is our success.

Who are we??

Leslie Emmens

Main Office

Noah Heller, MS, PG

President/Founder

Miles Koehler

Inside Sales and Technical Info

James Tsumura

Outside Sales

Our company’s vision is technically expansive and focused on advancement of subsurface data acquisition technologies for groundwater applications. Our team of geoscientists and engineers at BESST listen to the unique nature of each problem as defined by our clients and then provide scientifically focused solutions.
In pursuing our mission, we offer our palette of subsurface technologies and services at highly competitive prices. We work with hundreds of municipalities, hundreds of private water companies, government entities such as the Department of Energy and the Department of Defense, and many more organizations within the agricultural, mining, geotechnical, and environmental sectors.
In our mind, “challenge” means “opportunity”!

Mission Statement

Flow & Chemistry Profiling

Water Well Services

Long Screen Test Well

Exploration Support

Groundwater, Soil & Gas Sampling

Sampling Equipment

## Treatment Avoidance
Using Well Profiling under Ambient and Dynamic conditions

## Well inspection
New Well, Water-Quality Failure Diagnostics

## Support Services

Rapid High Resolution Site & Well Characterization

## Soil Sampling
Precision Groundwater & Soil Gas Sampling


## Deep Borehole Sampling
Groundwater samples up to 3,000 feet downhole

## Groundwater sampling
Capable of sampling in 1.25-inch diameter wells

Johnson Utilities (Arizona)

Burns and McDonnell (California)

Water Replenishment District (California)

large_drinkingwater2_9d37d077a5.png

medium_drinkingwater2_9d37d077a5.png

small_drinkingwater2_9d37d077a5.png

thumbnail_drinkingwater2_9d37d077a5.png

drinkingwater2_9d37d077a5.png

Water Quality and Production Optimization

## Water Quality and Production Optimization

[Dynamic Profiling](/services-pages/water-well-services/water-quality-and-production/1)

[Ambient Profiling](/services-pages/water-well-services/water-quality-and-production/2)

[Long-Screen Test Well Profiling](/services-pages/water-well-services/water-quality-and-production/3)

[Well Access](/services-pages/water-well-services/water-quality-and-production/4)


large_dynamic_b1cd952994.jpg

medium_dynamic_b1cd952994.jpg

small_dynamic_b1cd952994.jpg

thumbnail_dynamic_b1cd952994.jpg

dynamic_b1cd952994.jpg

large_dynamic2_3233636022.jpg

medium_dynamic2_3233636022.jpg

small_dynamic2_3233636022.jpg

thumbnail_dynamic2_3233636022.jpg

dynamic2_3233636022.jpg

## Dynamic Flow Profiling
#### Overview
![dynamic1.png](https://besst.teocoop.site/uploads/dynamic1_4a9a73c201.png)

Increasingly stringent standards for trace levels of contaminants such as chromium, arsenic, nitrates, and TCP, in combination with a surge in demand for groundwater resources, have led to a need for more efficient and precise well characterization.
Under exclusive license to BESST, Inc. from the U.S. Geological Survey, the Dye Tracer system uses an NSF 60 certified rhodamine dye solution injected at varying depths within a well while the well is still operating at a steady state. The return rate of the injected dye provides high-definition data that is analyzed by BESST to determine flow dynamics throughout the well. Other conventional methods of characterizing wells are expensive, involve disrupting water service, and do not accurately represent water quality with flow velocity data during steady-state pumping conditions. BESST’s miniaturized technology allows the well to operate normally while the diagnostic analysis is conducted, which provides representative data under actual pumping conditions with no test pump required.
#### Objectives
- To delineate zonal flow contributions along the screened sections of a well.
- To delineate zonal flow percentage contributions along the screened sections of a well.
- To develop a customized sampling plan for water quality analysis.
- To determine mass transfer of contaminants throughout a well.
- To reduce or eliminate dependence on expensive treatment technologies.
- To delineate plume migration within an active well field.

Combining BESST’s HydroBooster Pump System with the Dynamic Flow Profile has produced diagnostic data that has revealed opportunities for many different well modifications. Installation of sleeves and packers at precise depths along well screens can prevent contaminants from entering wells, resulting in water treatment cost savings that have been estimated at nearly 80 percent annually. Engineered suctions and pump replacements to address energy use and sand invasion are other common modifications that can be implemented following a Dynamic Flow Profile.

#### PDF Downloads
- [USGS Dye Tracer](http://besst.teocoop.site/uploads/Combined_Well_Bore_Flow_Meter_and_Depth_Dependent_Sampler_fs19699_357a2d6d97.pdf)
- [Dynamic Flow and Chemistry Report Example 2020](http://besst.teocoop.site/uploads/Dynamic_Flow_and_Chemistry_Report_Example_2020_4060a8635d.pdf)

Combined_Well_Bore_Flow_Meter_and_Depth_Dependent_Sampler_fs19699_357a2d6d97.pdf

Dynamic_Flow_and_Chemistry_Report_Example_2020_4060a8635d.pdf

large_ambient2_95f9a47cfe.jpg

medium_ambient2_95f9a47cfe.jpg

small_ambient2_95f9a47cfe.jpg

thumbnail_ambient2_95f9a47cfe.jpg

ambient2_95f9a47cfe.jpg

medium_large_ambient_4ae34e59ff.jpg

small_large_ambient_4ae34e59ff.jpg

thumbnail_large_ambient_4ae34e59ff.jpg

large_ambient_4ae34e59ff.jpg

## Ambient Flow Profiling

#### Overview

Offline wells present their own challenges to successful wellfield management, but can also serve as valuable tools when gathering data for subsurface characterization. In order to measure the ambient flow and chemistry within offline wells, BESST has developed its Ambient Flow Profiling Service to better characterize flow and mass flux under non-pumping conditions. 
The Ambient Flow Profiling Service utilizes the [dye tracer system](/) developed by the U.S. Geological Survey that injects small quantities of diluted rhodamine dye solution into the well. The dye then moves with the hydraulic gradient within the well, and that movement is measured using one or more fiber-optic sensors positioned a known distance from the injection point. 
The diagnostic data obtained with the Ambient Flow Profiling Service provides insight into potential risks to the water quality of critical assets through the process of vertical and lateral mass transfer within an aquifer.

![ambient1.png](https://besst.teocoop.site/uploads/ambient1_aff714b3cf.png)

#### Objectives
- To determine pathways of water migration into a well.
- To determine mass transfer of contaminants throughout a well.
- To delineate plume migration within a well field.
- To compare zonal contribution under static conditions vs. dynamic conditions.

Combining BESST’s HydroBooster sampling system with the Ambient Flow Profile Service has produced diagnostic data that has revealed opportunities for a variety of different well modifications, including sleeves and packers at precise depths to reduce water treatment costs. 




large_20220915_124013_1_aa1dd5abe0.jpg

medium_20220915_124013_1_aa1dd5abe0.jpg

small_20220915_124013_1_aa1dd5abe0.jpg

thumbnail_20220915_124013_1_aa1dd5abe0.jpg

20220915_124013_1_aa1dd5abe0.jpg

large_hydrobooster1_76b4ec3194.jpg

medium_hydrobooster1_76b4ec3194.jpg

small_hydrobooster1_76b4ec3194.jpg

thumbnail_hydrobooster1_76b4ec3194.jpg

hydrobooster1_76b4ec3194.jpg

## Long-Screened Test Well Profiling

#### Introduction

BESST Inc. has integrated the practice of test well investigations with the precision and granularity of BESST’s proprietary dynamic flow tracer and chemistry profiling to confidently inform development of production wells. A dynamic, steady state flow and chemistry profile is employed in a long-screened test well with a custom injection and sampling plan to best characterize the subsurface environment in tandem with lithologic and geophysical data. The data gathered and analyzed from the long-screened test well aids in determining the most viable and effective construction for a proposed production well; including recommendations for screen and blank casing locations, pump depths, and pumping rates to develop a long lasting well.
 
#### Methods

The long-screened test well application begins with determining the right location for drilling or testing an existing well in the immediate area of a proposed production well. For example, an existing monitoring well with a long screen, usually exceeding 300 feet in continuous length, may take the place of drilling and developing a long-screened test well. Once the informed construction is underway, or the existing well is modified to testing standards, a team of scientists gathers the geologic data in the region and of the well to best advise the testing methods. The long-screened test well sampling typically delineates 15 zones along the length of the screen, but this may be adjusted based on the client’s needs. In most instances, an electric submersible pump is deployed to the bottom of the well to engage the entirety of the well screen. Once the well has been sufficiently pumped and developed, the [Dynamic Flow Profile](/services-pages/water-well-services/water-quality-and-production/1)  is conducted in a span typically lasting two full days. The flow data is used to mass balance the chemical influence of each zone within the well and at the wellhead, producing a flow and chemistry scenario that will be used in forming recommendations for the development of a production well based on the clients desired water yield and chemical allowances.
During the long-screen test well profile, a pump and packer assembly may be used in isolating portions of screen to maximize engagement to smaller zones along the screened interval. This process has been used to ensure screen engagement and compare pump placement locations to the overall chemical yield of the well. 

#### Results
 
The long-screened test well technology is proprietary and innovative in the groundwater community and has already provided clients with deep understandings and unprecedented foresight into their future well designs. Furthermore, this technology has been integrated into entire basin characterizations for a variety of basin planned use projects. The data gathered during this test has been used in conjunction with groundwater modeling to accurately identify constituent mass and water production potential in the subsurface. Pictured below include graphs and figures conceived from past long-screen test well projects.

![test well2.png](https://besst.teocoop.site/uploads/LSTW_diagram_sanitized_9097853a6c.jpg)



## Well Access

Coming soon. If you have any questions, please [contact us](/contact)

Water Quality and Production Optimization

Contact Form