The following tips and guidance can help improve environmental outcomes and reduce costs during site cleanups.

• Consider no-purge techniques, such as passive diffusion bags, or low-flow purging techniques, depending on site contaminants.
• Schedule groundwater sampling activities with other site (e.g., O&M) activities to carpool and reduce trips to the site.
• Return purge water to the same well where it came from once all sediment has settled.¹