The Geoprobe® Screen Point 22 (SP-22) sampling device is utilized in conjunction with the Geoprobe® DualTube™ Sampling System. The SP-22 screen is typically utilized after the depth to groundwater has been confirmed by collecting soil samples with the Geoprobe® DualTube™ Sampling System. Once the surface of the water table has been confirmed, the SP-22 screen is lowered inside the Geoprobe® 2.25-inch rods and the rods are slowly retracted 4-feet to expose the screen below the Geoprobe® DualTube™ cutting shoe. With the stainless steel screen exposed, and the water table surface intersecting the screen, clean dedicated tubing is lowered inside the screen and groundwater is extracted utilizing a peristaltic pump and/or a stainless steel check ball valve.
This video shows The Probing Company installing limited space soil borings inside an industrial facility just north of Atlanta, Georgia. We have successfully reached depths of 15 feet bls with this method. The video demonstrates the process from start to finish using a custom built cart rig and other hand tools. #soilsampling #atlantageoprobe #floridageoprobe #alabamageoprobe #tennesseegeoprobe #mississippigeoprobe #georgiageoprobe #geoprobe #environmentalsampling #PhaseIIESA #environmentalassessmentPlease contact us if we can help out in any way on your next site.Jim Cole, PGThe Probing Company404.296.1006www.TheProbingCompany.com
Posted by The Probing Company | Atlanta Georgia Geoprobe Services on Tuesday, June 14, 2016
The Geoprobe® SP-15/16 is a protected screen, direct push groundwater sampling device utilized for sampling groundwater from unconsolidated materials. To collect a groundwater sample utilizing this device, a stainless steel screen is inserted inside a stainless steel sheath, and a drive head is attached to the sheath. A steel expendable point is then attached to the other end of the sheath, and a drive rod is threaded to the top. Once attached, the entire assembly is driven into the subsurface using the percussion of the Geoprobe® rig. Drive rods are added to the string of tools as the sampler is advanced to the desired depth. Once the desired depth is reached, stainless steel extension rods are inserted down the center of the drive rods to hold the expendable point in place, and the drive rods are retracted approximately 4 feet. With the stainless steel screen exposed and the water table surface intersecting the screen, the extension rods are removed. The groundwater is extracted using disposable poly tubing and a peristaltic pump or a stainless steel check ball valve.