Geotech PRC User manual

Rev 10/27/2020 Part # 26650319
Product Recovery
Canister
Installation and Operation Manual

1
Table of Contents
Section 1: System Description........................................................................... 3
Function and Theory ......................................................................................... 3
System Components......................................................................................... 3
Section 2: System Installation and Operation.................................................. 4
Section 3: System Maintenance......................................................................... 6
Section 4: System Troubleshooting .................................................................. 7
Section 5: System Specifications ...................................................................... 9
Section 6: System Schematic........................................................................... 11
Section 7: Replacement Parts List................................................................... 12
The Warranty...................................................................................................... 21

2
NOTE
DOCUMENTATION CONVENTIONS
This uses the following conventions to present information:
An exclamation point icon indicates a WARNING of a situation
or condition that could lead to personal injury or death. You
should not proceed until you read and thoroughly understand the
WARNING message.
WARNING
CAUTION
A raised hand icon indicates CAUTION information that relates to
a situation or condition that could lead to equipment malfunction
or damage. You should not proceed until you read and thoroughly
understand the CAUTION message.
A note icon indicates NOTE information. Notes provide additional
or supplementary information about an activity or concept.

3
Section 1: System Description
Function and Theory
The Geotech Product Recovery Canister (PRC) is a passive, skimmer device designed to
recover light floating hydrocarbons (such as gasoline and diesel fuel) from the ground
water in wells that are 2” (5cm) and larger.
Featuring a floating oleophilic/hydrophobic intake assembly, the skimmer can
automatically collect and skim floating product down to a sheen. Standard 2” skimmers
provide 12” (30cm) of intake travel and standard 4” skimmers provide up to 16” (40cm) of
intake travel, to accommodate water fluctuations. The unit is suspended in the well at the
desired recovery depth by supplied stainless steel suspension cable.
System Components
A PRC consists of two (2) major components; a product skimmer assembly and a
collection canister (as shown in Figures 1-1 through 1-3). On the 4” model, the skimmer
assembly is protected by a slotted screen that pre-filters the incoming product and
protects the intake assembly from damage. The skimmer assembly collects free product
and passes it through a coiled hose to the collection canister. Recovered product is
evacuated by removing the PRC from the well and opening the drain on the bottom of the
device.
Increased capacity collection canisters are available and easily installed by simply
unscrewing the collection canister section and replacing it with a larger collection canister
and weight assembly. When going from smaller to larger collection canisters,
consideration must be made for weight. Going from larger to smaller is not a problem.

4
Figure 1-1: 2” PRC
Skimmer Assembly
Figure 1-2: 4” PRC
Skimmer Assembly 1
liter
Figure 1-3: 4” PRC
Skimmer Assembly 3
liter

5
Section 2: System Installation and Operation
To install the PRC first measure the water and product levels with an Interface Probe
(Geotech can provide you with a variety of Interface Probes for all applications).
Typically, the PRC is set so that the intake assembly is placed at the midpoint of its travel
to allow for water table fluctuation in both directions (see Section 6: System Schematic for
an example of a PRC in the well). To set the intake assembly at the midpoint of travel,
measure from the top centralizer (2” skimmer), or top cap (4” skimmer) on the PRC and
along the suspension cable, the same distance as the water level reading taken with an
Interface Probe, then subtract 6”(15cm). Suspend the PRC from the wellhead to this
point.
To empty the collection canister, simply pull the PRC up from the well, open the drain
valve (by applying a downward pulling force on the valve sleeve –like a water bottle) and
transfer the recovered product into an approved container.
When re-installing, verify that the intake assembly will be set within its range of travel (as
describe above), and that the drain valve is completely closed to avoid the possibility of
water entering the canister. Figure 2-1 shows an example of the drain valve open and
closed.
Figure 2-1: Drain valve operation
Prior to installation, the oleophilic/hydrophobic screen intake must be
“conditioned”, or primed. To accomplish this, use diesel fuel or similar
hydrocarbon to saturate the screen portion of the intake assembly (as
shown in the figures found in Section 7: Replacement Parts List). The
optimum fluid would be the down well hydrocarbons to be recovered.
Take care to avoid damaging the intake assembly.

6
Section 3: System Maintenance
With proper maintenance, the Geotech PRC will provide years of reliable service. When
emptying the canister, these simple maintenance steps can be taken to assure its
reliability.
1. Inspect the product skimmer assembly for signs of physical damage. Scrapes or
dents in the screen intake may cause the skimmer to take on water. If such
damage is found, a new replacement intake assembly may be necessary.
2. Inspect the tubing coil for physical damage or obstructions, such as kinks.
Replace the tubing coil as necessary.
3. Inspect the collection canister for physical damage such as cracks. Replace as
necessary.
4. To clean the intake assembly screen intake, use a very soft bristle paint brush
and fresh diesel fuel or the type of product being recovered. Typically, this type of
maintenance should only be performed when the screen is obstructed with
emulsified product or other debris. Take care not to dent or scratch the screen
intake.
5. Use diesel fuel or similar hydrocarbon to saturate the screen portion of the
intake. The optimum fluid would be the down well hydrocarbons to be recovered.
Take care to avoid damaging the screen intake.

7
Section 4: System Troubleshooting
Problem: The PRC recovers only water.
Solutions:
1. The PRC is set too low in the well restricting the travel of the intake assembly.
2. Drain the collection canister completely, allow the screen intake to dry, re-prime
the screen, and then reset the PRC so that the water level fluctuation is within
the travel range of the intake assembly.
Problem: The water level has risen past the top of the travel range of the intake
assembly.
Solution:
Drain the collection canister completely, allow the screen intake to dry, re-prime the
screen, and then reset the PRC so that the water level fluctuation is within the travel range
of the intake assembly.
Problem: The drain valve is not fully closed.
Solution:
Empty the collection canister (as described in Section 2: System Installation and
Operation), and then close the drain valve by pushing up on the outer sleeve of the drain
valve until it stops.
Problem: There is a mechanical malfunction or a leak has developed.
Solution:
Call Geotech Environmental Equipment Inc. at 1-800-833-7958 for assistance.
Problem: The skimmer intake is not recovering product.
Solutions:
1. There is no product to recover.
2. Check, and periodically monitor, the product layer thickness.
If the water level has risen above the travel range of the intake
assembly at any time between site visits, the skimmer
assembly and collection canister will fill up with water and
displace any collected product. It will remain this way until
reset, even if the water level falls back within the travel range of
the intake assembly.

8
Problem: The skimmer is set too high.
Solution:
Recheck the water and product levels and reset the skimmer assembly (use the
installation procedures described in Section 2: System Installation and Operation).
Problem: The canister vent is blocked.
Solution:
Make sure that the holes in the suspension fitting are clear of debris. The PRC will not
operate if these holes are plugged.
Problem: The intake assembly is obstructed or the coiled product hose is kinked.
Solution:
Refer to Section 3: System Maintenance.

9
Section 5: System Specifications
Overall Dimensions
Size
Volume (L)
Dimensions
2"
0.125
43.5”L (110cm) x 1.75” OD (4.4cm)
0.25
49.0"L (149cm) x 1.75" OD (4.4cm)
0.5
59.5"L (151cm) x 1.75" OD (4.4cm)
1
82.5"L (210cm) x 1.75" OD (4.4cm)
2"
(With SS
Screen)
0.125
43.5”L (110cm) x 1.88” OD (4.8cm)
0.25
49.0"L (149cm) x 1.88" OD (4.8cm)
0.5
59.5"L (151cm) x 1.88" OD (4.8cm)
1
82.5"L (210cm) x 1.88" OD (4.8cm)
4"
1
37"L (94cm) x 3.5" OD (9cm)
3
53.0"L (135cm) x 3.5" OD (9cm)
4
60.0"L (152cm) x 3.5" OD (9cm)
Weight
Size
Volume (L)
Empty Weight
Full Weight
2"
0.125
2.9lbs (1.3kg)
3.1lbs (1.4kg)
0.25
3.1lbs (1.4kg)
3.5lbs (1.6kg)
0.5
3.5lbs (1.6kg)
4.3lbs (2.0kg)
1
5.2lbs (2.4kg)
6.7lbs (3.0kg)
2" (With SS
Screen)
0.125
4.3lbs (2.0kg)
4.5lbs (2.1kg)
0.25
4.5lbs (2.0kg)
4.9 lbs (2.2kg)
0.5
4.9lbs (2.2kg)
5.7lbs (2.6kg)
1
6.6lbs (3.0kg)
8.1lbs (3.7kg)
4"
1
8.0lbs (3.7kg)
9.5 lbs (4.3kg)
3
15.0lbs (6.8kg)
19.0lbs (8.6kg)
4
18.0lbs (8.2kg)
25.5lbs (11.6kg)

10
Overall Volumes
Size
Volume (L)
Capacity (gallons)
2"
0.125
0.035
0.25
0.07
0.5
0.13
1
0.26
4"
1
0.26
3
0.8
4
1.06
Minimum Water Required
Size
Volume (L)
Depth
2"
0.125
23.5” (60cm)
0.25
29.0" (74cm)
0.5
39.5" (100cm)
1
62.0" (157cm)
4"
1
18.5" (47cm)
3
35.0" (89cm)
4
43.0" (109cm)

11
Section 6: System Schematic
Figure 6-1: PRC Skimmer deployed in well

12
Section 7: Replacement Parts List
Figure 7-1: Standard 2” PRC Skimmer Assembly

13
Part numbers for the Standard 2” PRC Skimmer Assembly
Item #
Parts Description
Parts List
1
ASSY,CABLE,SUSPENSION,PRC,25FT
56650305
2
CLAMP,SS,STEPLESS EAR,7MM
16600005
3
CENTRALIZER,PVC,SKIMMER,2"
26650306
CENTRALIZER,PVC,SCREENED PR2
26600186
4
ASSY,BUOY,SKIMMER,2"100MESH
56650309
ASSY,BUOY,SKIMMER,2" 60 MESH
56650312
5
HOSE CLIP,SKIMMER FLOAT
26650028
6
HOSEBARB,BRS,1/8"X10-32,90DEG
17500149
7
LOCK,SS,9/16",SPIRAL
16650304
8
O-RING,VITON,#123 (BROWN)
11200299
9
SHAFT,SS,SKIMMER,33.5",PRC
26600002
10
HOSE,COILED,PR2
26650304
11
CAP,PVC,TOP,PRC2
26650315
12
BODY,PVC,CANISTER,0.125L,PRC
26650321
BODY,PVC,CANISTER,0.25L,PRC
26650307
BODY,PVC,CANISTER,0.5L,PRC
26650311
BODY,PVC,CANISTER,1LITER,PRC
26650313
13
ASSY,WEIGHT,SKIMMER,2",INSERT .25/.5L PRC,
56650302
ASSY,WEIGHT,SKIMMER,2",1L PRC
56650301
14
ASSY,SLEEVE,DRAIN,W/ O-RINGS
56650308
15
SCREEN,SS,1.88"ODX32.7" STRAIGHT WELD
26600188
16
CLAMP,SS6,CABLE,LOW PRFL
16650327
17
CRIMP,SS6,3/16,OVAL SLEEVE
17200189
PRC Accessories (not shown)
CAP,EXPANDABLE,LOCKING,2" W/SEAL
17150001
CAP,EXPANDABLE,LOCKING,4" W/SEAL
17150002
CAP,EXPANDABLE,LOCKING,6" W/SEAL
17150003
CAP,EXPANDABLE,LOCKING,8" W/SEAL
17150021
HANGER,CABLE,SLIP ON,SS4 WELL CAP
HANGER(D)
17150004
CABLE,SS,SUSPENSION,3/32"DI
16650300

14
Figure 7-2: Standard 4” PRC Skimmer Assembly (1 Liter)

15
Part numbers for the Standard 4” PRC Skimmer Assembly (1 Liter)
Item #
Parts Description
Parts List
1
ASSY,CABLE,SUSPENSION,PRC,25FT
56650305
2
ASSY,BUOY,SKIMMER,4"100 MESH
56650310
3
ASSY,DRAIN VALVE,SKIMMER,4" PR4,
56650307
4
SHAFT,SS,SKIMMER,24.5" 2065 REV A
26650305
5
HOSE,COILED,PR4
16650312
6
CAP,PVC,TOP,PRC4
16650313
7
COUPLER,PVC,PRC4
16650316
8
SCREEN,PVC,PRC4
16650317
9
HOSEBARB,BRS,.170"X1/8MPT,90D
17500148
10
CANISTER,1L,PRC4,W/ BTM PLATE
56650311
11
CLAMP,SS,STEPLESS EAR,7MM
16600005
12
CLAMP,SS6,CABLE,LOW PRFL
16650327
13
CRIMP,SS6,3/16,OVAL SLEEVE
17200189
PRC Accessories (not shown)
CAP,EXPANDABLE,LOCKING,2" W/SEAL
17150001
CAP,EXPANDABLE,LOCKING,4" W/SEAL
17150002
CAP,EXPANDABLE,LOCKING,6" W/SEAL
17150003
CAP,EXPANDABLE,LOCKING,8" W/SEAL
17150021
HANGER,CABLE,SLIP ON,SS4 WELL CAP HANGER(D)
17150004
CABLE,SS,SUSPENSION,3/32"DI
16650300

16
Figure 7-3: Standard 4” PRC Skimmer Assembly (3 & 4 Liter)

17
Part numbers for the Standard 4” PRC Skimmer Assembly (3 & 4 Liter)
Item #
Parts Description
Parts List
1
ASSY,CABLE,SUSPENSION,PRC,25FT
56650305
2
ASSY,BUOY,SKIMMER,4"100 MESH
56650310
3
ASSY,DRAIN VALVE,SKIMMER,4" PR4,
56650307
4
SHAFT,SS,SKIMMER,24.5" 2065 REV A
26650305
5
HOSE,COILED,PR4
16650312
6
CAP,PVC,TOP,PRC4
16650313
7
COUPLER,PVC,PRC4
16650316
8
SCREEN,PVC,PRC4
16650317
9
CANISTER,PVC,3L,PRC4
16650318
CANISTER,PVC,4L,PRC4
16650320
10
WEIGHT,SS4,3L&4L,PRC4
16650319
11
CLAMP,SS,STEPLESS EAR,7MM
16600005
12
HOSEBARB,BRS,.170"X1/8MPT,90D (3 LITER)
17500148
HOSEBARB,BRS,1/8”X1/8”NPT (4 LITER)
16600065
13
O-RING,VITON,#041
16650321
14
WEIGHT,SS4,4L,PRC4
26650318
15
CLAMP,SS6,CABLE,LOW PRFL
16650327
16
CRIMP,SS6,3/16,OVAL SLEEVE
17200189
PRC Accessories (not shown)
CAP,EXPANDABLE,LOCKING,2" W/SEAL
17150001
CAP,EXPANDABLE,LOCKING,4" W/SEAL
17150002
CAP,EXPANDABLE,LOCKING,6" W/SEAL
17150003
CAP,EXPANDABLE,LOCKING,8" W/SEAL
17150021
HANGER,CABLE,SLIP ON,SS4 WELL CAP
HANGER(D)
17150004
CABLE,SS,SUSPENSION,3/32"DI
16650300

18
REVISION HISTORY
PROJECT #
DESCRIPTION
DATE
1670
General formatting and consistency updates. Added pn
16600065, removed pn 56650303, added 0.0125 specs to
system specifications, added revision history –StellaR
6/27/2018
1670
Corrected table title in Section 5: System specifications.
Corrected weight for .125 volume –StellaR
6/29/2018
2093
Added PRC Accessories and updated figures 7-1, 7-2, 7-3
to include the stainless steel crimp and low profile
adjustable clamp –StellaR
10/27/2020