MAPP-LSH 2020-001

Pond Skimmer Testing (via ASTM D8107)

of Rymar Waterworks’ Marlee Float Skimmers

Issued February 2020 TRI-MAPP Report

The testing herein is based on accepted industry practice as well as test method(s) listed. This TRI Materials and Product Performance (TRI-MAPP) report and the data and evaluations included herein are specific to the materials received and evaluated and may not apply to materials not specifically tested, nor does the report

endorse or recommend the product(s) or material(s) use. There is no warranty by TRI, expressed or implied, as to any finding or other matter in this report, or as to any product or material covered by the report. TRI neither accepts nor makes claim as to the final use and purpose of the product(s) or material(s).

Final Report

Submitted to: RYMAR Waterworks Innovations

803 Roper Creek Drive Greenville, SC 29615

Attn: Jamie McCutchen, President

E-mail: jamie@rymarwaterworks.com

Submitted by: TRI Environmental, Inc.

9306 Bee Cave Rd. Austin, TX 78733

Prepared by: C. Joel Sprague, P.E.

Technical Director – TRI South Carolina (864) 346-3107

jsprague@tri-env.com

Date Submitted: February 17, 2020

MAPP-LSH 2020-001

Pond Skimmer Testing (via ASTM D8107)

of Rymar Waterworks’ Marlee Float Skimmers

Issued February 2020 TRI-MAPP Report

The testing herein is based on accepted industry practice as well as test method(s) listed. This TRI Materials and Product Performance (TRI-MAPP) report and the data and evaluations included herein are specific to the materials received and evaluated and may not apply to materials not specifically tested, nor does the report

endorse or recommend the product(s) or material(s) use. There is no warranty by TRI, expressed or implied, as to any finding or other matter in this report, or as to any product or material covered by the report. TRI neither accepts nor makes claim as to the final use and purpose of the product(s) or material(s).

February 17, 2020

Mr. Jamie McCutchen RYMAR Waterworks Innovations 803 Roper Creek Drive Greenville, SC 29615 864-918-3676 E-mail: jamie@rymarwaterworks.com REPORT: Pond Skimmer Testing of Marlee Float Skimmers via ASTM D8107 The large-scale testing reported herein was performed in general accordance with ASTM D8107 on a range of skimmer sizes manufactured by Rymar Waterworks as Marlee Float Pond Skimmers. The test results characterize skimmer performance in terms of clear water flow rate vs. pond depth.

C. Joel Sprague, P.E. Technical Director TRI-South Carolina

James E. (Jay) Sprague, CPESC Laboratory Director TRI-South Carolina

ASTM D8107 Testing of Marlee Skmmers

February 17, 2020

Page 1

Project:

Client:

Events:

2" - 0.5"

Orifice

2" - 0.75"

Orifice

2" - 1.0"

Orifice

2" - 1.5"

Orifice

2" - No

Orifice

3" - 1.5"

Orifice

3" - 2"

Orificey =

1.6425x0.0636

y =

6.4078x0.0312

y =

7.5459x0.0748

y =

14.221x0.0401

y =

22.133x0.1378

y =

16.127x0.0897

y =

29.588x0.0625

4.0 1.3 6.7 8.4 15.0 26.8 18.3 32.3

3.5 1.3 6.7 8.3 15.0 26.3 18.0 32.0

3.0 1.2 6.6 8.2 14.9 25.8 17.8 31.7

2.5 1.2 6.6 8.1 14.8 25.1 17.5 31.3

2.0 1.2 6.5 7.9 14.6 24.4 17.2 30.9

1.5 1.2 6.5 7.8 14.5 23.4 16.7 30.3

1.0 1.2 6.4 7.5 14.2 22.1 16.1 29.6

0.5 1.1 6.3 7.2 13.8 20.1 15.2 28.3

0.3 1.1 6.2 6.9 13.6 18.7 14.5 27.4

0.1 1.0 6.0 6.4 13.0 16.1 13.1 25.6

3" - 2.5"

Orifice

3" - No

Orifice

4" - 2.0"

Orifice

4" - 2.5"

Orifice

4" - 3.0"

Orifice

4" - 3.5"

Orifice

4" - No

Orificey =

32.06x0.1537

y =

60.386x0.12

y =

32.786x0.0463

y =

48.885x0.0519

y =

72.011x0.0744

y =

99.028x0.0712

y =

141.13x0.1432

4.0 39.7 71.3 35.0 52.5 79.8 109.3 172.1

3.5 38.9 70.2 34.7 52.2 79.0 108.3 168.9

3.0 38.0 68.9 34.5 51.8 78.1 107.1 165.2

2.5 36.9 67.4 34.2 51.3 77.1 105.7 160.9

2.0 35.7 65.6 33.9 50.7 75.8 104.0 155.9

1.5 34.1 63.4 33.4 49.9 74.2 101.9 149.6

1.0 32.1 60.4 32.8 48.9 72.0 99.0 141.1

0.5 28.8 55.6 31.8 47.2 68.4 94.3 127.8

0.3 26.6 52.3 31.0 45.9 65.8 90.9 118.8

0.1 22.5 45.8 29.5 43.4 60.7 84.1 101.5

Rymar Waterworks Innovations

11/1/2019 & 2/12/2020

1 to 180 gpm

6-ft x 39-ft x 4-ft deep

C. Joel Sprague / February 17, 2020

Quality Review / Date

Flow Rate Testing of Marlee Float Pond Skimmers

The testing reported herein is based upon accepted industry practice as well as the test method listed. Test results do not apply to samples

other than those tested. TRI neither accepts responsibility for nor makes claim as to the final use and purpose

Water Depth,

ft

Test Date:

Flow Range:

Test Pond Size:

Flow Rate vs. Depth Measurements

Skimmer

Skimmer Flow Rate, gal/min

Skimmer

Skimmer Flow Rate, gal/min

Water Depth,

ft

© 2020 TRI Environmental, Inc.

ASTM D8107 Testing of Marlee Skmmers

February 17, 2020

Page 2

Testing Protocol - Apparatus / Facility

Testing Protocol - Test Setup

Figure 5. Access for Insertion of Orifice Figure 6. Skimmer Floats to Top during Filling

Testing of the floating surface skimmer was performed in a calibrated basin (i.e. it has a known surface area at any

known depth). The basin dimensions were 40-ft long x 6-ft wide x 4-ft deep. The basin was outfitted with an 8”

discharge pipe. The discharge pipe was fitted with a valve that could be controlled from the outside of the basin to

initiate and stop flow through the skimmer. In addition, the test basin was outfitted with a second valved discharge

pipe to enable lowering of the water surface within the basin if desired to take flow rate measurements at various

depths without waiting for drainage exclusively through the skimmer. A calibrated ruler was mounted on the side of

the test basin to allow depth to be read at pre-determined intervals. To facilitate filling of the 7000 gallon basin, a

PTO driven Crisafulli pump was used to draw water from an adjacent pond, quickly filling the test basin and allowing

for multiple test replicates per day.

The skimmer to be tested was attached to the discharge pipe prior to pond filling using reducers/connectors depending

on the size of the flexible coupling. The connection between the discharge pipe and the flexible coupling was

watertight to ensure that the only outflow from the test basin was through the skimmer inlet. Figures 1-6 depict the

typical test setup, filling, draining, and measuring of the tested floating surface skimmer.

Figure 1. View of Test Pool during Fill Test Figure 2. Outlet is Controlled with 8-inch Valve

Figure 3. Skimmer Connected to Outlet Pipe Figure 4. Skimmer Connected to Outlet Pipe

© 2020 TRI Environmental, Inc.

ASTM D8107 Testing of Marlee Skmmers

February 17, 2020

Page 3

Test Operation and Data Collection

Test Results

Figure 7. Marlee Float Skimmer Test Results

With the valve on the discharge pipe closed, and the skimmer to be tested in place, the test basin was filled with water

to the maximum desired depth using the PTO driven pump and piping. Filling proceeded at a pace which allowed all

of the air within the skimmer assembly to bleed completely during filling. This slow bleeding of the air trapped inside

the skimmer system ensured that all tested skimmers were not influenced by trapped “air pockets” and that gravity

flow was occurring. Once the basin was filled to the desired depth, the surface of the water was allowed to become

still and the initial depth reading was recorded on the calibrated ruler mounted on the sidewall. After the initial

reading was taken, the skimmer discharge valve was opened and the clock on the test was simultaneously started. As

the water discharged from the test basin through the floating skimmer, periodic depth and time readings were

recorded. By converting change in depth to change in water volume, an average flow rate at different water elevations

was calculated for each individual skimmer design and size. Flow rates were verified by monitoring the discharge

through a 30° V-notch weir.

Measurements of water surface elevation over time and weir flows were the principle data used to determine the

performance of the product tested. This data is entered into a spreadsheet that transforms the measurements of water

surface elevation over time into a curve that fits average flow rate, in gallons per minute, to a given depth, in feet.

The data for the various skimmer sizes and orifices tested in the program described herein are summarized in Figure

7. The data shows that each skimmer size and orifice exhibits a unique flow rate at various depths. This is true across

all sizes.

0.0

10.0

20.0

30.0

40.0

50.0

60.0

70.0

80.0

90.0

100.0

110.0

120.0

130.0

140.0

150.0

160.0

170.0

180.0

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

Flo

w R

ate

(GP

M)

Depth (ft)

Marlee Float Skimmer Flow Rate (GPM) vs. Depth (ft)

4" - No Orifice

4" - 3.5" Orifice

4" - 3.0" Orifice

3" - No Orifice

4" - 2.5" Orifice

3" - 2.5" Orifice

4" - 2.0" Orifice

3" - 2" Orifice

2" - No Orifice

3" - 1.5" Orifice

2" - 1.5" Orifice

2" - 1.0" Orifice

2" - 0.75" Orifice

2" - 0.5" Orifice

© 2020 TRI Environmental, Inc.