LAUSD Final Report REV 032419 - Rainsystems€¦ · technology in order to introduce these water saving products to the managed turf industry. * LAUSD Office of Environmental Health

Data analysis and verification of results; Paul Cushing, Agronomist - Class A GCSAA, Golf Course and Sports Field Specialist

www.rainsystems.com

This pilot was conducted for the Los Angeles Unified School District (LAUSD), with funding from the Los Angeles Department of Water & Power (LADWP).

RAIN SYSTEMS PRECISION INJECTION MACHINE PILOT

JUNE 13, 2018 - DECEMBER 31, 2018

Jim Sibert, Cofounder, CTO, Rain Systems, PIM Inventor, Pilot Technical Manager

FINAL REPORT

Elaine Sibert, Cofounder, CEO, Rain Systems, Pilot Project Manager

FOR

"INSTALLING HYDROGEL TO REDUCE WATER USAGE FOR TURF IRRIGATION"

Paul Cushing, Agronomic Consultant, PCTurf Pro

EL SERENO MIDDLE SCHOOL

LOS ANGELES UNIFIED SCHOOL DISTRICT

Rain Systems PIM PIlot for LAUSD

Page 1

OPPORTUNITY

The goal of this case study was to validate water savings for turf irrigation utilizing Rain Systems' Precision Injection Machine (PIM) method of implanting hydrogel into existing turf at root zone level through a minimally invasive technique. In order to prove the efficacy of the PIM technology, Rain Systems injected Soil Moist (1) hydrogel into the mixed stand of Kikuyugrass (Pennisetum clandestinum) and Common bermudagrass (Cynadon dactylon) at LAUSD turf test sites at a depth of 3” into the soil, while keeping the grass pristine.

The pilot was conducted at El Sereno Middle School, 2839 N Eastern Ave, Los Angeles, CA 90032, a Los Angeles Unified School District (LAUSD) campus for which the Los Angeles Department of Water and Power (LADWP) provides water and electric service.

PRECISION INJECTION MACHINE (PIM)

Patent No: US 7,845,293 B1Patent No: US 8,707,878 B2


Page 2

PRECISION INJECTION MACHINE INNOVATION

Rain Systems' Precision Injection Machine (PIM) is the innovation and working prototype of Jim Sibert's patented technology. Jim discovered that hydrogel products such as Soil Moist (1) and Broadleaf P4 (2) were used to reduce irrigation for crops and for landscaping. He became intrigued by the fact that while many others had attempted to build a machine that could put these water saving soil amendments into lawns and turfgrass, no one had yet succeeded. Once he finalized his design and filed for patents, Jim received his first patent within 12 months and the second within 2 years. Jim worked with NASA fabricators, Navy submarine valve engineers and an Artificial Intelligence software engineer to help him build the working prototype of the PIM. Jim Sibert and Elaine Sibert started Rain Systems and became a Portfolio Company at the Los Angeles Cleantech Incubator in 2016. Since that time, they have implemented pilots with California State University Northridge and City of Los Angeles Department of Recreation and Parks (3).

The PIM has the unique ability to implant hydrogel into existing turfgrass at the root zone level, while keeping the turf pristine, even on short-cut turfgrass. Using computer controlled pin-point water injections, the PIM implants hydrogel between 2" - 8" into the ground, while simultaneously metering the exact amount of hydrogel necessary to each injection point. It is designed with the capability to adjust to different types of soil and turf.

The technological advances of the PIM allows Rain Systems to price our services at a fraction of our competitors. Our installation time is more than twice as fast, pays for itself within 6 months and each treatment is fully effective for 3 years.


Page 3

HYDROGELS

Hydrogels were developed decades ago as an environmentally friendly soil amendment to improves the water and retention capacity of soil. Rain Systems PIM implanted Soil Moist (*) at El Sereno Test Areas #1 and #2, a hydrogel product that is EPA tested, non-toxic, fully effective for 3 years and 100% biodegradable. Once the hydrogels are in the ground, they absorb and store water and nutrients typically lost in drainage and evaporation, then slowly release it back to the soil as needed. Hydrogels continuously provide water to the roots of the grass while enhancing nutrient uptake as well. This keeps the soil hydrated, leading to fewer days of irrigation and a reduction in water consumption for turf irrigation by up to 50%. These soil amendments have been effectively used in agriculture and landscaping for decades, where they were able to mix it into the soil before planting. Rain Systems developed the PIM technology in order to introduce these water saving products to the managed turf industry.

* LAUSD Office of Environmental Health and Safety (OEHS) approved the use of Soil Moist prior to awarding this pilot to Rain Systems.


Page 4

PILOT TEST AREAS JUNE 13, 2018 - DECEMBER 31, 2018

EL SERENO MIDDLE SCHOOL2839 N Eastern Ave, Los Angeles, CA 90032

TEST AREA #1 FRONT LAWN SOUTH7,020 SQFT

CONTROL AREA #1 FRONT LAWN NORTH

(FOR TURF CONDITION COMPARISON) 5,980 SQFT

TEST AREA #2 SOCCER FIELD, ZONES 1 - 325,574 SQFT

CONTROL AREA #2 SOCCER FIELD, ZONES 4-5


TEST AREA #1, FRONT LAWN SOUTH

CONTROL AREA #1, FRONT LAWN NORTH

TEST AREA #2 SOCCER FIELD, ZONES 1-3



Page 5

THE RESULTS


JUNE 13, 2018 - DECEMBER 31, 2018

TEST AREA #1, FRONT LAWN SOUTH 34% Reduction in Turf Irrigation

20% Higher Soil Moisture Retention (compared to control area)26,933 Gallons of Water Saved (during 5-month study)

MONTH EL SERENO MS TEST AREA #1, FRONT LAWN SOUTH 7,020 SQFTCONTROL TEST AREA #1

Water Usage (gallons) Water Usage (gallons) Savings (gallons) Reduction (%) Cost Savings ($)

2018 IRRIGATION 3 DAYS/WEEK IRRIGATION 2 DAYS/WEEK

August 16,673 10,260 6,413 38% $87.60September 16,673 11,543 5,130 31% $70.08October 16,673 11,543 5,130 31% $70.08November 15,390 10,260 5,130 33% $70.08December 14,108 8,978 5,130 36% $70.08

Average/Month 15,903 10,517 5,387 34% $73.585 Month Totals (7,020 sqft Test Area #1) 79,517 52,584 26,933 34% $367.90Savings/SqFt/Year 9 $0.13Savings/Acre/ Year 401,087 $5,479

PROJECTIONS BASED ON HYDROGEL INSTALLATION into ALL 3.5 Acres of Irrigated Turf for Entire El Sereno MS Campus

Savings/Each Year 3.5 Acres 1,403,805 $19,176

Projected Cumulative Savings/3 Years 3.5 Acres x 3 Years 4,211,414 $57,529

TEST AREA #2, SOCCER FIELD Inconclusive due to irrigation system challenges, although some improvement was noted.

During the 5-month case study with the Los Angeles Unified School District (LAUSD), Rain Systems' PIM hydrogel installation maintained green, healthy turf while reducing irrigation an average of 34%, saving 26,933 gallons of water for the 7,020 SqFt area of Kikuyugrass/Bermudagrass. Soil moisture readings were 20% higher in Test Area #1, Front Lawn South versus Control Area #1, Front Lawn North. The projected 3-year cumulative water savings, based on Rain Systems installation of hydrogel throughout the entire El Sereno MS campus, which has 3.5 acres of irrigated turf, would be 4MM gallons of water and $57k in water cost savings.

WATER DATA

PROJECTED CUMULATIVE WATER SAVINGS (gallons) - ENTIRE EL SERENO CAMPUS - 3.5 ACRESTEST AREA #1, FRONT LAWN SOUTH WATER USAGE OVER 5-MONTH STUDY

16,673

16,673

16,673

15,390

14,108

10,260

11,543

11,543

10,260

8,978

0 2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000

August

September

October

November

December

IRRIGATION WATER USAGE (GALLONS) AUGUST - DECEMBER 2018

TEST AREA #1 - IRRIGATION 2 DAYS/WEEK CONTROL - IRRIGATION 3 DAYS/WEEK

1,403,805

2,807,609

4,211,414

0

500,000

1,000,000

1,500,000

2,000,000

2,500,000

3,000,000

3,500,000

4,000,000

4,500,000

YEAR 1 YEAR 2 YEAR 3

PROJECTED CUMULATIVE WATER SAVINGS (gallons) Total Water Savings of 26,933 gallons over 5-month


Page 6

METHODOLOGYEL SERENO MIDDLE SCHOOL

JUNE 13, 2018 - DECEMBER 31, 2018

The following methodology was implemented during the pilot:

Test Area #1, Front Lawn South: Rain Systems' PIM implanted Soil Moist hydrogels into Kikuyugrass (Pennisetum clandestinum) and Common bermudagrass (Cynadon dactylon) turf plot areas at a depth of 3" below the surface into the root zone of the turf. Per the manufacturers recommendation of 5 lbs/1000 sqft , 35 lbs of hydrogel was installed into this 7,020 sqft test area.

Control Area #1, Front Lawn North: No hydrogel was installed. For the purposes of this case study, Front Lawn North is the control area for comparison of turf condition with Test Area #1, Front Lawn South. No changes were made to the irrigation schedule of the Control Area #1, Front Lawn North, while the irrigation schedule for Test Area #1, Front Lawn South was reduced.

Test Area #2, Soccer Field, Zones 1 - 3: Rain Systems PIM implanted Soil Moist hydrogel into Kikuyugrass (Pennisetum clandestinum) and Common bermudagrass (Cynadon dactylon) turf plot areas at a depth of 3" below the surface into the root zone of the turf. Per the manufacturers recommendation of 5 lbs/1000 sqft , 126 lbs of hydrogel was installed into this 25,574 sqft test area.

Control Area #2, Soccer Field, Zones 4 - 5: No hydrogel was installed. For the purposes of this case study, Soccer Field, Zones 4 - 5 are the control area for comparison of turf condition with Test Area #2, Soccer Field, Zones 1 - 3.

Rain Systems performed catchment testing for Test Area #2, Soccer Field to measure sprinkler head functionality and distribution uniformity.

Soil testing was conducted in this case study to determine the role that the hydrogels play in enhancing turfgrass plant nutrient availability in the upper root zone during the testing process.

Soil testing was conducted by Logan Labs LLC out of Lakeview, OH

Soil results, analysis and recommendations were performed by Paul Cushing, Agronomic Turfgrass Services

Photo documentation was taken with drone aerial camera photographs as well as photos at ground level

Soil moisture conditions and readings were monitored and collected with a Turf Tec International Digital Moisture Sensor soil water meter

Weather data was compiled for El Sereno Middle School through CIMIS North Hollywood, Time and Date and Wunderground for the Los Angeles Basin


Page 7

PILOT TEST AREA #1, FRONT LAWN SOUTHEL SERENO MIDDLE SCHOOL

JUNE 13, 2018 - DECEMBER 31, 2018


TEST AREA #1 FRONT LAWN SOUTH

7,020 SQFT

CONTROL AREA #1 FRONT LAWN NORTH





Page 8

PILOT PROGRESSION: TEST AREA #1, FRONT LAWN SOUTHEL SERENO MIDDLE SCHOOL

JUNE 13, 2018 - DECEMBER 31, 2018

JUNE 16. 2018Rain Systems implanted hydrogel into existing turf at root zone level with their patented technology, the Precision Injection Machine (PIM) into Test Area #1, Front Lawn South at El Sereno Middle School, 2839 N Eastern Ave, Los Angeles, CA 90032. Per the manufacturer's recommendation of 5 pounds/1000 sqft (9) 35 pounds of hydrogel was implanted into Test Area #1, Front Lawn South, which is 7,020 sqft of Kikuyugrass/Bermudagrass.

JUNE 16 - JULY 12. 2018Irrigation was kept at 3 cycles/week x 15 minutes/cycle, equal to 100% irrigation

JULY 12. 2018Rain Systems met with LAUSD personnel to review and assess the condition of the turf in Test Area #1, Front Lawn South. A reduction in irrigation was approved based on the condition of the turf.

AUGUST 1. 2018

LAUSD personnel reduced the irrigation schedule for Test Area #1, Front Building Lawn South from 3 cycles/week to 2 cycles/week x 15 minutes/cycle. This was a reduction of 34% to the overall turf irrigation for Test Area #1, Front Lawn South.

SEPTEMBER 14. 2018

Soil Moisture readings taken for Test Area #1, Front Lawn South and Control Area #1, Front Lawn North. Test Area #1 showed 20% higher moisture readings than Control Area #1, even with 34% reduction in irrigation to Test Area #1 during this time.

DECEMBER 18. 2018

Rain Systems met with LAUSD personnel to review the condition of the turf and discuss final steps of pilot for Test Area #1, Front Lawn South at El Sereno MS. The turf in Test Area #1, Front Lawn South was visually as green and dense when compared to Control Area #1, Front Lawn North turf.

DECEMBER 31. 2018Conclusion of initial case study. Collected soil samples, compiling of all data for final report.


Page 9

PILOT PROGRESSION: TEST AREA #1,FRONT LAWN SOUTH EL SERENO MIDDLE SCHOOL

JUNE 13, 2018 - DECEMBER 31, 2018

JUNE 16. 2018

Rain Systems implanted hydrogel into existing turf at root zone level with the Precision Injection Machine (PIM) into Test Area #1, Front Lawn South at El Sereno Middle School, 2839 N Eastern Ave, Los Angeles, CA 90032. Per the manufacturer's recommendation of 5 pounds/1000 sqft, 35 pounds of hydrogel was implanted into Test Area #1, Front Lawn South, which has 7,020 sqft of Kikuyugrass/Bermudagrass.




TEST AREA #1, FRONT LAWN SOUTH CONTROL AREA #1, FRONT LAWN NORTH


Page 10

PILOT PROGRESSION: TEST AREA #1,FRONT LAWN SOUTH EL SERENO MIDDLE SCHOOLJUNE 13, 2018 - DECEMBER 31, 2018

JUNE 16 - JULY 12, 2018.

Irrigation was kept at 3 cycles/week x 15 minutes/cycle, equal to 100% irrigation

JULY 12, 2018.

Rain Systems met with LAUSD personnel to review and assess the condition of the turf in Test Area #1, Front Lawn South. A reduction in irrigation was approved based on the condition of the turf.1 MONTH AFTER HYDROGEL INSTALLATION, OVERALL DENSITY AND HEALTH OF TURF HAS IMPROVEDIRRIGATION SCHEDULE: 3 CYCLES/WEEK X 15 MINUTES/CYCLE

AUGUST 1, 2018.

LAUSD personnel reduced the irrigation schedule for Test Area #1, Front Building Lawn South from 3 cycles/week X 15 minutes/cycle down to 2 cycles/week x 15 minutes/cycleREDUCED IRRIGATION SCHEDULE TO 2 DAYS/ WEEK FOR TEST AREA #1, FRONT LAWN SOUTH





Page 11


SEPTEMBER 14. 2018SOIL MOISTURE 20% HIGHER IN TEST AREA #1, FRONT LAWN SOUTH VS. CONTROL AREA #1, FRONT LAWN NORTH

Soil Moisture readings taken for Test Area #1, Front Lawn South and Control Area #1, Front Lawn North. Turf Tec International Digital Moisture Sensor readings showed 20% higher moisture in Test Area #1, Front Lawn South in comparison to Control Area #1, even with a 34% reduction in irrigation to Test Area #1 during this time.IRRIGATION SCHEDULE: 2 CYCLES/WEEK X 15 MINUTES/CYCLE FOR 6 WEEKS

NOVEMBER. 4. 20183 MONTHS AT 34% REDUCTION IN IRRIGATION IN TEST AREA #1, FRONT LAWN SOUTH, TURF IS VISIBLY AS GREEN AS CONTROL AREA #1IRRIGATION SCHEDULE: 2 CYCLES/WEEK X 15 MINUTES/CYCLE FOR 3 MONTHS

CONTROL AREA #1, FRONT LAWN NORTHIRRIGATION SCHEDULE: 3 CYCLES/WEEK X 15 MINUTES/CYCLE





Page 12


DECEMBER. 18. 2018Rain Systems met with LAUSD personnel to review the condition of the turf and discuss final steps of pilot for Test Area #1, Front Lawn South at El Sereno MS. The turf in Test Area #1, Front Lawn South was observed to be equally green and healthy when visually compared to Control Area #1, Front Lawn North turf.


5 MONTHS WITH 34% REDUCED IRRIGATION, GRASS IS VISIBLY GREENIRRIGATION SCHEDULE: 2 CYCLES/WEEK X 15 MINUTES/CYCLE FOR 5 MONTHS


TURF IN TEST AREA #1 AND CONTROL AREA #1 ARE EQUALLY GREENIRRIGATION SCHEDULE: 3 CYCLES/WEEK X 15 MINUTES /CYCLE

December 31, 2018: Conclusion of initial case study. Collected soil samples, compiling of all data for final report.




Page 13

WATER SAVINGS DATA - TEST AREA #1, FRONT LAWN SOUTH

MONTH TEST AREA #1, FRONT LAWN SOUTH 7,020 SQ FTCONTROL TEST

Water Usage (gallons) Water Usage (gallons) Savings (gallons) Reduction (%) Cost Savings ($)IRRIGATION 3 DAYS/WEEK IRRIGATION 2 DAYS/WEEK

2018

June Installation on June 16, 2018July Reduction of Irrigation on August 1, 2018August 16,673 10,260 6,413 38% $87.60September 16,673 11,543 5,130 31% $70.08October 16,673 11,543 5,130 31% $70.08November 15,390 10,260 5,130 33% $70.08December 14,108 8,978 5,130 36% $70.08

Average/Month 15,903 10,517 5,130 34% $73.585 Month Totals 79,517 52,584 26,933 34% $367.90

Savings/SqFt/Year 9 $0.13

Savings/Acre/ Year 401,095 $5,479

PROJECTED CUMULATIVE SAVINGS BASED ON HYDROGEL INSTALLATION into ENTIRE EL SERENO MS CAMPUS, which has 3.5 Acres of Irrigated Turf



WATER DATA

EL SERENO MIDDLE SCHOOLJUNE 13, 2018 - DECEMBER 31, 2018

34% AVERAGE REDUCTION IN TURF IRRIGATIONRain Systems' PIM hydrogel installation maintained green, healthy turf while reducing irrigation by an average 34% and saved 26,933 gallons of water for the 7,020 SqFt area of Kikuyugrass/Bermudagrass during the 5-month case study. Soil moisture readings were 20% higher in Test Area #1, Front Lawn South versus Control Area #1, Front Lawn North. The projected 3-year cumulative water savings, based on Rain Systems installation of hydrogel throughout the entire El Sereno MS campus, which has 3.5 acres of irrigated turf, would be 4MM gallons of water and $57k in water cost savings.

TEST AREA #1, FRONT LAWN SOUTH WATER USAGE OVER 5-MONTH STUDY

16,673

16,673

16,673

15,390

14,108

10,260

11,543

11,543

10,260

8,978

0 2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000

August

September

October

November

December

IRRIGATION WATER USAGE (GALLONS) AUGUST - DECEMBER 2018

TEST AREA #1 - IRRIGATION 2 DAYS/WEEK CONTROL - IRRIGATION 3 DAYS/WEEK

26,933 Gallons of Water saved

in 7,020 sqft Test Area #1 during 5-month case study.


Page 14

CONCLUSIONS: TEST AREA #1, FRONT LAWN SOUTH


JUNE 13, 2018 - DECEMBER 31, 2018

This case study validates substantial water savings utilizing Rain Systems' patented PIM method of implanting hydrogel into the upper 3” of the turf root zone. During the 5-month study period, water usage was reduced by an average 34%, saving the District 26,933 gallons of water in the 7,020 sqft test area. The turfgrass canopy on the Kikuyugrass/Bermudagrass lawn remained strong in Test Area #1, Front Lawn South and thrived while improving the turf quality on the surface through the increased uptake of water and nutrients with the use of the hydrogels.

Hydrogels continuously provide water to the roots while enhancing nutrient uptake as well. The added effectiveness in the Rain Systems PIM injection process of installing hydrogel into turf at root level can also be seen in the percentage of moisture found in the soil. Utilizing the Turf Tec International Digital Moisture Sensor, moisture readings in Test Area #1, Front Lawn South (Treated) were over 20% higher in comparison to Control Area #1, Front Lawn North (Untreated). Thus exhibiting the water holding capabilities of the hydrogels even though irrigation water usage was reduced by 34% during the same time period. This strongly displays the effectiveness of the hydrogels to retain moisture and allow the turfgrass to thrive while saving substantial water.

Even with higher than normal temperatures and rainfall of just 3.98" (2.59" of which occured on December 5-6, 2018), Rain Systems' installation of hydrogel into turf helped reduce irrigation and maintain healthy grass during the 5-month study. Hydrogels are highly effective for 3 years, which will contribute to continued water savings through the summer of 2021.

In conclusion, at Test Area #1, Front Lawn South at El Sereno Middle School, the turf remains healthy with above average density and moisture holding content, as evidenced in the photographs within this study. During the 5-month case study, water usage in Test Area #1, Front Lawn South was reduced by an average 34% and 26,933 gallons of water were saved in the 7,020 SqFt area of Kikuyugrass/Bermudagrass.

The projected 3-year cumulative water savings, based on Rain Systems installation of hydrogel throughout the entire El Sereno MS campus, which has 3.5 acres of irrigated turf, would be 4MM gallons of water and $57k in water cost savings.


Page 15

PROJECTED CUMULATIVE WATER SAVINGS - ENTIRE CAMPUS - 3.5 Acres x 3 YearsEL SERENO MIDDLE SCHOOLJUNE 13, 2018 - DECEMBER 31, 2018


PROJECTED CUMULATIVE SAVINGS OVER 3 YEARS BASED ON HYDROGEL INSTALLATION into ENTIRE EL SERENO MS CAMPUS, which has 3.5 Acres of Irrigated Turf

FRONT LAWN SOUTH A135' x 52' = 7,020 sq ft

FRONT LAWN NORTH115' X 52' = 5,980 sqft

SOCCER FIELD200' x 215' +82' x 24' =44,968 sq ft total

FRONT LAWN SOUTH B183' X 32'' = 5,856

SPORTS FIELD

500' X 174' = 87,000 sq ft total

COMMON AREAS50' X 30' = 1,500 sq ft

$19,176

$38,352

$57,529

$0

$10,000

$20,000

$30,000

$40,000

$50,000

$60,000

$70,000


PROJECTED CUMULATIVE WATER COST SAVINGS ($)

1,403,805

2,807,609

4,211,414

0

500,000

1,000,000

1,500,000

2,000,000

2,500,000

3,000,000

3,500,000

4,000,000

4,500,000


PROJECTED CUMULATIVE WATER SAVINGS (gallons)

Front Lawn North = 5,980 sqftFront Lawn South A = 7,020 sqftFront Lawn South B = 5,856 sqftSoccer Field = 44,968 sqftSports Field = 87,000 sqftCommon Areas = 1,500 sqft

Total Square Footage 152,324 sqft

Total Acreage 3.5 Acres


Page 16

PILOT TEST AREA #2, SOCCER FIELD, ZONES 1 - 3EL SERENO MIDDLE SCHOOLJUNE 13, 2018 - DECEMBER 31, 2018


TEST AREA #2 SOCCER FIELD, ZONES 1 - 325,574 SQFT



TEST AREA #2

CONTROL AREA #2


Page 17

CATCHMENT TESTING - TEST AREA #2, SOCCER FIELD

N

W E

Catchment tesing conducted on June 13, 2018 S

50 50 45 75 35 40 30 35 10 10 10

ZONE 5 50 50 75 70 30 35 35 35 10 10 10

40 50 75 40 30 25 25 30 40 25 45

35 25 25 20 30 20 20 20

ZONE 4 30 35 35 20 15 25 15 20 30

55 55 30 40 25 30 30 35 20 20 40

55 45 55 35 35 25 30 20 20 60 30

ZONE 3 40 40 75 30 50 35 40 25 40 20 60

25 30 30 40 50 30 30 25 25 45 20

30 25 30 25 20 20 35 25 25 30

ZONE 2 35 30 20 20 10 10 25 15 X 20

30 20 30 25 60 35 20 45 10 25 25

30 40 40 55 115 40 125 55 50 48 50

ZONE 1 20 40 30 100 45 100 115 50 85 25 45

50 55 55 60 125 75 65 65 40

Irrigation Heads - functioning properly, with uniform water distribution

Irrigation Heads - malfunctioning, with inconsistent water distribution

* all amounts in milliliters of water captured during 30 minute irrigation run time



Page 18

PILOT PROGRESSION: TEST AREA #2, SOCCER FIELD, ZONES 1 - 3EL SERENO MIDDLE SCHOOLJUNE 13, 2018 - DECEMBER 31, 2018

JUNE 13 - 15. 2018

Rain Systems implanted hydrogel into existing turf at rootzone level with their patented technology, the Precision Injection Machine (PIM) into SOCCER FIELD ZONES 1 - 3 at El Sereno Middle School, 2839 N Eastern Ave, Los Angeles, CA 90032. Per the manufacturer's recommendation of 5 pounds/1000 sqft, 126 pounds of hydrogel was implanted into TEST AREA #2, SOCCER FIELD, ZONES 1 - 3, which is 25,574 sqft of Kikuyugrass/Bermudagrass. No hydrogel was installed into CONTROL AREA #2, SOCCER FIELD, ZONES 4 - 5 for turf comparison purposes.

JUNE 13 - JULY 19, 2018

Irrigation schedule was kept at 100%. Overall condition of turf improved during this period of time.

JULY 19. 2018

LAUSD personnel applied overseeding(10) to entire SOCCER FIELD in order to fill in the bare soil areas, additional irrigation began in order to germinate the grass seeds. Overseeding is implemented each year at all LAUSD playing fields.

AUGUST 7. 2018

Field in better condition, but not yet fully covered in turf, germination of new seeds still a work in progress.(11)

SEPTEMBER 9. 2018Irrigation system problems resulted in set back of turf condition throughout soccer field.

SEPTEMBER 14. 2018

Site visit with LAUSD, Rain Systems performed soil moisture readings with Turf Tec International Digital Moisture Sensor , SOIL MOISTURE READINGS WERE 22% HIGHER IN TEST AREA #2 VS CONTROL AREA #2Irrigation system was reset in an attempt to revive overall Soccer Field turf.

OCTOBER - NOVEMBER 2018Site visits inconclusive due to lack of access to Soccer Field. Irrigation was reduced by 20% at one point, but system was reset again by computer and not functioning properly.

DECEMBER 18. 2018

Irrigation system not working properly, LAUSD personnel working to determine issues and order repairs.


Page 19


JUNE 13 - 15, 2018Rain Systems implanted hydrogel into existing turf at root zone level with the Precision Injection Machine (PIM) into TEST AREA #2, SOCCER FIELD ZONES 1 - 3. Per the manufacturer's recommendation of 5 pounds/1000 sqft, 126 pounds of hydrogel was implanted into the TEST AREA #2, which is 25,574 sqft of Kikuyugrass/Bermudagrass. No hydrogel was installed into CONTROL AREA #2, which will be used for turf comparison purposes while receiving 100% normal irrigation throughout the study.

HYDROGEL INSTALLATION AND CATCHMENT TESTINGTurf in poor condition, irrigation system for Zones 1 - 3 repair work during installation

TEST AREA #2, SOCCER FIELD, ZONES 1- 3

CONTROL AREA #2, SOCCER FIELD, ZONES 4-5


Page 20


JULY 12. 2018

IRRIGATION TO OVERALL FIELD AT 100% Turf condition improving.

JULY 19. 2018

LAUSD personnel applied overseeding(10) to entire SOCCER FIELD in order to fill in the bare soil areas, additional irrigation began in order to germinate the grass seeds. Overseeding is implemented each year at all LAUSD playing fields. (10)

AUGUST 7. 2018

Field in better condition, but not yet fully covered in turf, new grass seeds have not yet fully germinated (11)






Page 21

PILOT PROGRESSION: TEST AREA #2, SOCCER FIELD, ZONES 1 - 3


SEPTEMBER 9. 2018Irrigation system problems resulted in set back of turf condition throughout soccer field.

SEPTEMBER 14. 2018SOIL MOISTURE READINGS WERE 22% HIGHER IN TEST AREA #2 VS CONTROL AREA #2 Irrigation system was reset in an attempt to revive overall soccer field turf.

TEST AREA #2, Zones 1 - 3 CONTROL AREA #2, Zones 4 - 5


Page 22


DECEMBER 18. 2018

Irrigation system not working properly, LAUSD personnel working to locate and repair problem areas.

Of special note, pertaining to TEST AREA #2, SOCCER FIELD, ZONES 1-3, which received an application of hydrogels with the PIM at a depth of 3” below the soil surface in the root zone on June 13 - 15, 2018. Due to irrigation deficiencies and mechanical issues with the irrigation controller, the study was inconclusive and unable to move forward with a conclusion. However, on September 14, 2018, Paul Cushing was able to monitor the soil moisture levels with the Turf Tec International Digital Moisture Sensor. After taking extensive moisture meter readings on both TEST AREA #2, AND CONTROL AREA #2, it was found that TEST AREA #2, ZONES 1 - 3 (TREATED) was holding an average of 22% more moisture in the upper rootzone than the CONTROL AREA #2, ZONES 4-5 (UNTREATED). This was a surprising outcome, considering the inconsistency of the irrigation system. The ability of the hydrogel to hold on to moisture, even in the dry areas, was a true demonstration of the efficiency of the water holding capabilities of the hydrogel.

TEST AREA #2, Soccer Field Zones 1 - 3

CONTROL AREA #2, Zones 4 - 5


Page 23

SOIL CHEMISTRYEL SERENO MIDDLE SCHOOLJUNE 13, 2018 - DECEMBER 31, 2018

The test areas were soil tested to determine the soil chemistry in the upper 4” of the root zone. Test Area #1, Front Lawn South and Control Area #1, Front Lawn North were tested in September of 2018. The results in both area’s soil results came back with elevated levels of sodium (salts) which had accumulated from the existing irrigation source (water). TEST AREA #1, FRONT LAWN SOUTH soil results came back at 254 pounds/acre in sodium. CONTROL AREA #1, FRONT LAWN NORTH soil results came back at 284 pounds/acre in sodium. Both areas would be considered excessive in sodium, as these numbers should be less than 50 pounds/acre.(8) The sodium numbers would be considered detrimental for long term viability of the hydrogel, turfgrass root and shoot development.

The interpretation for correcting the soil chemistry was made by Agronomist Paul Cushing in September of 2018. The recommendations were for multiple applications of gypsum(12), a leaching irrigation to push the salts out of the root zone, then replacing the sodium with applications of potassium. This leaching process with the calcium was put on hold until the gypsum material could be approved through the LAUSD Office of Environmental Health and Safety (OEHS).

However, after the follow up soil test results in January 2019 came back, the numbers showed a substantial decrease in the amount of sodium in the upper 4” of the root zone by 65% in TEST AREA #1, FRONT LAWN SOUTH over the 5-month period. The follow up numbers showed the TEST AREA #1, FRONT LAWN SOUTH had reduced from 254 pounds/acre to 89 pounds/acre in sodium. This reduction in salts allowed for the hydrogel to better store water without breaking apart under the influence of sodium, which in turn allows for longer efficacy of the hydrogel material over a longer period.

To ensure the highest possible water savings, Rain Systems recommends annual soil testing in order to assess sodium levels and apply Calcium Products(12) when necessary, based on analysis of soil lab results. Monitoring the soil chemistry will safeguard the health of the soil structure and protect the integrity of the

hydrogel, which in return will improve the quality and long-term sustainability of the turf.

Note: CONTROL AREA #1, FRONT LAWN NORTH did not exhibit improved turf appearance or enhanced soil chemistry based on the results of the 2nd set of soil tests from January 2019.


Page 24

THANK YOU

We wish to extend our most sincere thanks to the Los Angeles Unified School District (LAUSD) for allowing us to conduct this case study. We appreciate all of the time and effort that everyone involved put into this project.

We would also like to thank the Los Angeles Department of Water and Power (LADWP) for their continued support and funding to conduct this pilot.

We would like to thank Paul Cushing of PCTurf Pro, Agronomic Consulting, for participating in this study. Thank you for sharing your immense knowledge of soil chemistry and turfgrass during the course of this study.

Sincerely,Elaine R. Sibert & James E. SibertRain Systems, Inc.


Page 25

BIBLIOGRAPHYEL SERENO MIDDLE SCHOOLJUNE 13, 2018 - DECEMBER 31, 2018

1 http://www.soilmoist.com/products/golf-courses.php

2 http://broadleafp4.com

3 https://rainsystems.com/#case-studies

4 https://www.loganlabs.com

5 https://www.pcturfpro.com

6 https://cimis.water.ca.gov

7 https://www.wunderground.com/history/daily/us/ca/los-angeles-downtown/KCQT/date/2018-12-31

8Brookside Laboratories - Official Report of Analysis and Audit - Soil-Plant-Animal Nutritional Research - New Knoxville, OH & Eco-Farm, An Acres USA Primer by Charles Walters

9 http://www.soilmoist.com/forms/JRM-Form-144_REVISED2010.pdf

10 http://safesportsfields.cals.cornell.edu/overseeding

11 https://oldschoollawnservice.com/grass-seed-germination-process/

12 http://www.calciumproducts.com


Page 26

RAIN SYSTEMS PRECISION INJECTION MACHINE PILOT"INSTALLING HYDROGEL TO REDUCE WATER USAGE FOR TURF IRRIGATION"


APPENDIX


Page 27

WEATHER AND WATER DATA FOR EL SERENO MIDDLE SCHOOL

1 Compilation of all weather and water data for El Sereno Middle School

Test Area #1, Front Lawn South and Test Area #2, Soccer Field

June - December 2018

2 Monthly Compilations of weather and water data for El Sereno Middle School

Test Area #1, Front Lawn South and Test Area #2, Soccer Field


3 CIMIS North Hollywood/ Los Angeles Basin Station 223

Evapotranspiration Rates for Test Area #1 and Test Area #2


APPENDIX A

RAIN SYSTEMS PRECISION INJECTION MACHINE PILOT INSTALLING HYDROGEL TO REDUCE WATER USAGE FOR TURF IRRIGATIONEL SERENO MIDDLE SCHOOLJUNE 13, 2018 - DECEMBER 31, 2018


Page 28

WEATHER AND WATER DATA COMPILATION FOR ALL TEST AREAS


MONTH TEST AREA #1, FRONT LAWN SOUTH 7,020 SQ FTCONTROL TEST MAX MIN AVG TEMP Precip CIMIS ETo

Water Usage (gallons) Water Usage (gallons) Savings (gallons) Reduction (%) Cost Savings ($) (℉) (℉) (℉) (in) (in.)2018 IRRIGATION 3 DAYS/WEEK IRRIGATION 2 DAYS/WEEK

June Installation on June 16, 2018 88 68 78 0.00 6.54July Irrigation Reduction on August 1, 2018 94 68 81 0.00 7.60August 16,673 10,260 6,413 38% $87.59 101 63 82 0.00 6.16September 16,673 11,543 5,130 31% $70.08 108 73 91 0.00 4.50October 16,673 11,543 5,130 31% $70.08 90 55 73 0.31 3.55November 15,390 10,260 5,130 33% $70.08 88 47 68 1.07 2.72December 14,108 8,978 5,130 36% $70.08 77 39 58 2.60 1.88

AVERAGE TOTAL TOTALAverage 15,903 10,517 5,130 34% $73.58 92 59 76 3.98 32.95

5 Month Totals 79,515 52,583 26,933 34% $367.90

Savings/SqFt/Year 9 $0.13

Savings/Acre/ Year 401,087 $5,479

PROJECTED CUMULATIVE SAVINGS BASED ON HYDROGEL INSTALLATION into ENTIRE EL SERENO MS CAMPUS, which has 3.5 Acres of Irrigated Turf



CIMIS Eto Evapotranspiration RateSourcesWunderground Downtown LA (6) https://www.wunderground.com/history/daily/us/ca/los-angeles-downtown/KCQT/date/2018-12-31ET Rates - N Hollywood Station 223 (7) http://www.cimis.water.ca.gov/App_Themes/images/etozonemap.jpg

RAIN SYSTEMS PRECISION INJECTION MACHINE PILOT INSTALLING HYDROGEL TO REDUCE WATER USAGE FOR TURF IRRIGATION

2839 N Eastern Ave, Los Angeles, CA 90032

WATER SAVINGS DATAWEATHER DATA


JUNE - DECEMBER 2018.


Page 29

WEATHER & WATER DATA - JUNE 2018

SUN MON TUE WED THUR FRI SAT WEEK6/1 6/2

GPC FL NORTH 1283 1283 1283 3848GPC FL SOUTH 1283 1283 1283 3848Max Temp 73 79 76Min Temp 70 73 72Mean Temp 72 76 74Precipitation 0 0 0Avg Humidity 59 50 54

6/3 6/4 6/5 6/6 6/7 6/8 6/9GPC FL NORTH 1283 1283 1283 3848GPC FL SOUTH 1283 1283 1283 3848Max Temp 79 77 72 73 75 81 81 77Min Temp 72 72 68 70 72 77 75 72Mean Temp 76 75 70 72 74 79 78 75Precipitation 0 0 0 0 0 0 0 0Avg Humidity 63.5 64.5 70 68 60 50 60 62

6/10 6/11 6/12 6/13 6/14 6/15 6/16 INSTALLED HYDROGELGPC FL NORTH 1283 1283 1283 3848GPC FL SOUTH 1283 1283 1283 3848Max Temp 79 81 82 79 88 81 73 80Min Temp 75 79 75 75 75 72 68 74Mean Temp 77 80 79 77 82 77 71 77Precipitation 0 0 0 0 0 0 0 0Avg Humidity 59 52 62 67 60 61 60 60

6/17 6/18 6/19 6/20 6/21 6/22 6/23GPC FL NORTH 1283 1283 1283 3848GPC FL SOUTH 1283 1283 1283 3848Max Temp 70 72 73 79 77 77 73 74Min Temp 64 70 72 73 72 72 72 71Mean Temp 67 71 73 76 75 75 73 73Precipitation 0 0 0 0 0 0 0 0Avg Humidity 64 59.5 64 67 67 71 73 66

6/24 6/25 6/26 6/27 6/28 6/29 6/30GPC FL NORTH 1283 1283 1283 3848GPC FL SOUTH 1283 1283 1283 3848Max Temp 75 79 77 81 79 79 79 78Min Temp 73 73 72 75 73 73 73 73Mean Temp 74 76 75 78 76 76 76 76Precipitation 0 0 0 0 0 0 0 0Avg Humidity 65 60.5 60 63 63 63 63 63

WATERSAVINGS

MONTHLY ET Max Min Mean Precipitation Humidity GPM FL NORTH GPM FL SOUTH GALLONS SAVED

JUNE. 2018 5.93 77 72 75 0 61 19238 19238 0

CONTROL - 3 CYCLES/WEEK X 15 MINUTES/CYCLE TEST AREA #1 - 3 CYCLES/WEEK X 15 MINUTES/CYCLEGallons/Minute Minutes/Cycle Gallons/Cycle FRONT LAWN Gallons/Minute Minutes/Cycle Gallons/Cycle

CONTROL 85.5 15 1282.5 SOUTH 85.5 15 1282.5

JUNE 2018

Temperature


JUNE 13, 2018 - DECEMBER 31, 2018


Page 30

WEATHER & WATER DATA - JULY 2018

SUN MON TUE WED THUR FRI SAT WEEK7/1 7/2 7/3 7/4 7/5 7/6 7/7

GPC FL NORTH 1283 1283 1283 3848GPC FL SOUTH 1283 1283 1283 3848Max Temp 79 75 77 81 88 108 102 87Min Temp 73 73 73 75 82 102 91 81Mean Temp 76 74 75 78 85 105 97 84Precipitation 0 0 0 0 0 0 0 0Avg Humidity 61 62 60 56 50 28 40 51

7/8 7/9 7/10 7/11 7/12 7/13 7/14GPC FL NORTH 1283 1283 1283 3848GPC FL SOUTH 1283 1283 1283 3848Max Temp 97 95 91 88 86 82 82 89Min Temp 90 86 82 82 79 79 79 82Mean Temp 94 91 87 85 83 81 81 86Precipitation 0 0 0 0 0 0 0 0Avg Humidity 37 43 56 58 60 64 61 54



7/29 7/30 7/31GPC FL NORTH 1283 1283GPC FL SOUTH 1283 1283Max Temp 91 84 88 88Min Temp 82 82 82 82Mean Temp 87 83 85 85Precipitation 0 0 0 0Avg Humidity 56 64 64 61

WATERSAVINGS

MONTHLY ET Max Min Mean Precipitation Humidity GPM SF CONTROL GPM SF Z 1-3GALLONS SAVED

JULY. 2018 6.88 87 81 84 0 58 16673 16673 0


CONTROL 85.5 15 1282.5 SOUTH 85.5 15 1282.5

JULY 2018

Temperature GPM COMBINED


JUNE 13, 2018 - DECEMBER 31, 2018


Page 31

WEATHER & WATER DATA - AUGUST 2018

SUN MON TUE WED THUR FRI SAT WEEK

8/1 8/2 8/3 8/4GPC FL NORTH 1283 1283 2565GPC FL SOUTH 1283 1283Max Temp 95 92 93 92 93Min Temp 72 72 71 69 71Mean Temp 84 82 82 81 82Precipitation 0 0 0 0 0Avg Humidity 48 55 56 61 55

8/5 8/6 8/7 8/8 8/9 8/10 8/11GPC FL NORTH 1283 1283 1283 3848GPC FL SOUTH 1283 1283 2565Max Temp 91 100 100 96 101 93 90 168Min Temp 68 69 72 70 72 74 73 125Mean Temp 80 85 86 83 87 84 82 84Precipitation 0 0 0 0 0 0 0 0Avg Humidity 61 54 51 39 50 42 54 50



8/26 8/27 8/28 8/29 8/30 8/31GPC FL NORTH 1283 1283 2565GPC FL SOUTH 1283 1283Max Temp 83 81 81 88 91 86 128Min Temp 64 63 63 65 63 63 95Mean Temp 74 72 72 77 77 75 74Precipitation 0 0 0 0 0 0 0Avg Humidity 62 62 64 57 65 65 62

WATERSAVINGS

MONTHLY GPM FL NORTH GPM FL SOUTHGALLONS SAVED

AUGUST 2018. ET Max Min Mean Precipitation Humidity 16673 10260 6413GPM FL NORTH GPM FL SOUTHGALLONS SAVED


CONTROL 85.5 15 1282.5 SOUTH 85.5 15 1282.5

AUGUST 2018

Temperature


JUNE 13, 2018 - DECEMBER 31, 2018


Page 32

WEATHER & WATER DATA - SEPTEMBER 2018


9/1

GPC FL NORTH 1283 1283GPC FL SOUTH 1282.5 1283Max Temp 82 81Min Temp 67 75Mean Temp 75 78Precipitation 0 0Avg Humidity 65 65


9/9 9/10 9/11 9/12 9/13 9/14 9/15GPC FL NORTH 1283 1283 1283 3848GPC FL SOUTH 1283 1282.5 2565Max Temp 89 84 81 81 85 92 86 85Min Temp 64 67 68 66 64 65 65 66Mean Temp 77 76 75 74 75 79 76 76Precipitation 0 0 0 0 0 0 0 0Avg Humidity 54 64 61 62 61 40 51 56


9/23 9/24 9/25 9/26 9/27 9/28 9/29 9/30GPC FL NORTH 1283 1283 1283 3848GPC FL SOUTH 1283 1282.5 2565Max Temp 80 79 73 80 80 82 81 85 80Min Temp 65 64 63 63 64 64 65 61 64Mean Temp 73 72 68 72 72 73 73 73 72Precipitation 0 0 0 0 0 0 0 0 0Avg Humidity 66 62 72 69 71 72 71 65 68

WATERSAVINGS


September. 2018 4.75 82 67 74 0 63 16673 11543 5130


CONTROL 85.5 15 1282.5 SOUTH 85.5 15 1282.5

SEPTEMBER 2018

Temperature


JUNE 13, 2018 - DECEMBER 31, 2018


Page 33

WEATHER & WATER DATA - OCTOBER 2018


10/1 10/2 10/3 10/4 10/5 10/6

GPC FL NORTH 1283 1283 1283 3848GPC FL SOUTH 1283 1282.5 2565Max Temp 90 82 80 79 77 77 81Min Temp 66 67 68 65 65 64 66Mean Temp 78 75 74 72 71 71 73Precipitation 0.00 0.00 0.01 0.00 0.00 0.00 0.01Avg Humidity 43 59 63 66 66 68 61

10/7 10/8 10/9 10/10 10/11 10/12 10/13GPC FL NORTH 1283 1283 1283 3848GPC FL SOUTH 1283 1282.5 2565Max Temp 78 77 77 73 75 81 70 76Min Temp 63 63 63 63 60 60 70 63Mean Temp 71 70 70 68 68 71 70 70Precipitation 0 0 0 0 0 0.23 0.07 0.30Avg Humidity 67 63 59 59 50 54 76 61

10/14 10/15 10/16 10/17 10/18 10/19 10/20GPC FL NORTH 1283 1283 1283 3848GPC FL SOUTH 1283 1282.5 2565Max Temp 73 82 83 83 85 89 90 84Min Temp 62 61 54 57 58 60 61 59Mean Temp 68 72 69 70 72 75 76 71Precipitation 0 0 0 0 0 0 0 0.00Avg Humidity 71 19 24 30 26 25 24 31


10/28 10/29 10/30 10/31GPC FL NORTH 1283 1283GPC FL SOUTH 1283 1283Max Temp 81 74 74 80 77Min Temp 58 58 61 55 58Mean Temp 70 66 68 68 68Precipitation 0 0 0 0 0.00Avg Humidity 72 77 70 68 72

WATERSAVINGS


OCTOBER. 2018 3.70 79 62 70 0.31 58 16673 11543 5130


CONTROL 85.5 15 1282.5 SOUTH 85.5 15 1282.5

OCTOBER 2018

Temperature


JUNE 13, 2018 - DECEMBER 31, 2018


Page 34

WEATHER & WATER DATA -NOVEMBER 2018


11/1 11/2 11/3

GPC FL NORTH 1283 1283 2565GPC FL SOUTH 1283 1283Max Temp 82 88 86 85Min Temp 56 58 58 57Mean Temp 69 73 72 71Precipitation 0 0 0 0Avg Humidity 33 33 39 35

11/4 11/5 11/6 11/7 11/8 11/9 11/10GPC FL NORTH 1283 1283 1283 3848GPC FL SOUTH 1283 1282.5 2565Max Temp 82 77 75 75 75 82 78 78Min Temp 59 61 62 62 58 50 53 58Mean Temp 71 69 69 69 67 66 66 68Precipitation 0 0 0 0 0 0 0Avg Humidity 49 68 62 70 66 20 21 51

11/11 11/12 11/13 11/14 11/15 11/16 11/17GPC FL NORTH 1283 1283 1283 3848GPC FL SOUTH 1283 1282.5 2565Max Temp 78 78 76 79 80 76 72 77Min Temp 50 48 47 54 51 52 58 51Mean Temp 64 63 62 67 66 64 65 64Precipitation 0 0 0 0 0 0 0 0Avg Humidity 28 20 18 19 25 47 67 32

11/18 11/19 11/20 11/21 11/22 11/23 11/24GPC FL NORTH 1283 1283 1283 3848GPC FL SOUTH 1283 1282.5 2565Max Temp 74 73 74 71 68 69 71 71Min Temp 55 52 50 53 56 54 55 54Mean Temp 65 63 62 62 62 62 63 63Precipitation 0.00 0.00 0.00 0.10 0.14 0.00 0.00 0.24Avg Humidity 56 43 55 62 74 67 68 61

11/25 11/26 11/27 11/28 11/29 11/30GPC FL NORTH 1283 1283GPC FL SOUTH 1283 1283Max Temp 76 78 76 69 65 69 108Min Temp 56 54 56 55 54 55 83Mean Temp 66 66 66 62 60 62 95Precipitation 0.00 0.00 0.00 0.02 0.81 0.00 0.83Avg Humidity 63 32 34 65 90 63 86

WATERSAVINGS


November. 2018 2.65 84 61 72 1.07 53 15390 10260 5130


CONTROL 85.5 15 1282.5 SOUTH 85.5 15 1282.5

NOVEMBER 2018

Temperature


JUNE 13, 2018 - DECEMBER 31, 2018


Page 35

WEATHER & WATER DATA -DECEMBER 2018

SUN MON TUE WED THUR FRI SAT WEEK12/1

GPC FL NORTH 0GPC FL SOUTH 0Max Temp 66 66Min Temp 48 48Mean Temp 57 57Precipitation 0 0Avg Humidity 54 54

12/2 12/3 12/4 12/5 12/6 12/7 12/8GPC FL NORTH 1283 1283GPC FL SOUTH 1283 1283Max Temp 65 68 72 61 58 70 70 66Min Temp 52 51 61 52 50 49 61 54Mean Temp 59 60 67 57 54 60 66 60Precipitation 0.00 0.00 0.00 0.44 2.15 0.00 2.59Avg Humidity 39 38 27 57 88 56 52 51

12/9 12/10 12/11 12/12 12/13 12/14 12/15GPC FL NORTH 1283 1283 1283 3848GPC FL SOUTH 1283 1282.5 2565Max Temp 72 68 70 66 77 69 72 71Min Temp 53 56 56 52 48 56 47 53Mean Temp 63 62 63 59 63 63 60 62Precipitation 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00Avg Humidity 52 52 59 69 36 31 36 48


12/23 12/24 12/25 12/26 12/27 12/28 12/29GPC FL NORTH 1283 1283 1283 3848GPC FL SOUTH 1283 1282.5 2565Max Temp 67 67 67 66 67 62 62 65Min Temp 47 53 52 47 49 45 39 47Mean Temp 57 60 60 57 58 54 50.5 56Precipitation 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.01Avg Humidity 80 76 50 54 49.5 15 31 51

12/30 12/31GPC FL NORTH 1283 1283GPC FL SOUTH 0Max Temp 66 63 65Min Temp 41 46 44Mean Temp 54 55 54Precipitation 0.00 0.00 0.00Avg Humidity 54 52 53

WATERSAVINGS

MONTHLY ET Max Min Mean Precipitation Humidity GPM FL NORTH GPM FL SOUTH

December. 2018 1.91 67 51 59 2.60 53 14108 8978 5130


CONTROL 85.5 15 1282.5 SOUTH 85.5 15 1282.5

DECEMBER 2018

Temperature


JUNE 13, 2018 - DECEMBER 31, 2018


Page 36

California Irrigation Management Information System (CIMIS)

CIMIS Monthly ReportRendered in ENGLISH Units.June 2018 - December 2018Printed on Wednesday, March 13, 2019

North Hollywood - Los Angeles Basin - Station 223Month Year Total

ETo(in)

TotalPrecip

(in)

Avg SolRad

(Ly/day)

AvgVapPres

(mBars)

AvgMax AirTemp(°F)

AvgMin AirTemp(°F)

Avg AirTemp(°F)

AvgMaxRel

Hum(%)

AvgMin Rel

Hum(%)

AvgRel

Hum(%)

AvgDewPoint(°F)

AvgWind

Speed(mph)

AvgSoil

Temp(°F)

Jun 2018

Jul 2018

Aug 2018

Sep 2018

Oct 2018

Nov 2018

Dec 2018

Tots/Avgs

6.54 K 0.02 K 634 15.0 81.2 58.8 68.4 86 44 64 55.5 2.9 K 70.7

7.60 K 0.03 638 16.5 K 91.6 L 67.3 K 77.6 L 73 K 34 K 53 L 58.4 L 2.8 K 77.2

6.16 K 0.03 581 K 20.5 K 81.8 K 67.2 K 73.7 K 89 61 71 L 63.3 L 3.7 K 76.7

4.50 K 0.00 488 K 18.0 78.0 K 62.5 69.0 92 59 76 60.2 3.5 K 73.5

3.55 0.35 395 K 15.8 K 73.1 59.8 65.6 90 58 74 K 56.2 K 3.9 K 69.5

2.72 1.98 K 308 K 9.8 K 77.1 48.6 K 61.1 83 29 54 K 42.3 K 1.9 K 59.1

1.88 K 2.71 254 9.2 69.5 45.2 55.6 86 35 61 41.3 1.4 K 54.2

32.95 5.1 471 15.0 78.9 58.5 67.3 86 46 65 53.9 2.9 68.7

Flag LegendM - All Daily Values Missing K - One or More Daily Values Flagged

J - One or More Daily Values Missing L - Missing and Flagged Daily ValuesConversion Factors

W/sq.m = Ly/day/2.065 inches * 25.4 = mm (F-32) * 5/9 = cmBars * 0.1 = kPa --


Page 37

APPENDIX BSOIL TESTING RESULTSRAIN SYSTEMS PRECISION INJECTION MACHINE PILOT

INSTALLING HYDROGEL TO REDUCE WATER USAGE FOR TURF IRRIGATIONEL SERENO MIDDLE SCHOOLJUNE 13, 2018 - DECEMBER 31, 2018

Soil samples were taken at each of the test areas for this pilot. This appendix includes the soil test results from Logan Labs, LLC. It also contains the analysis and recommendations by Paul Cushing, Agronomist.

1 Soil Report from Logan LabsTest Area #1, Front Lawn South & Control Area #1, Front Lawn NorthSeptember. 2018

2 Soil Report from Logan LabsTest Area #1, Front Lawn South & Control Area #1, Front Lawn NorthJanuary. 2019

3 Paul Cushing, Agronomist, Soil RecommendationsTest Area #1, Front Lawn South & Control Area #1, Front Lawn NorthSeptember. 2018

4 Soil Report from Logan LabsTest Area #2, Soccer Field Zones 1 - 3 & Control Area #2, Soccer Field Zones 4 - 5September. 2018

5 Paul Cushing, Agronomist, Soil RecommendationsTest Area #2, Soccer Field Zones 1 - 3 & Control Area #2, Soccer Field Zones 4 - 5September. 2018

6 Rain Systems - Paul Cushing Soil Recommendations Test Area #1, Front Lawn South and Test Area #2, Soccer FieldMarch. 2019

7 Rain Systems Estimate for Soil Testing & MaterialsTest Area #1, Front Lawn South and Test Area #2, Soccer FieldMarch. 2019


Page 38

Soil Report

Paul Cushing GC and Sports Turf Agronomic ServicesCompany:

9/25/2018Date:Rain Systems El Sereno MSJob Name:

Paul CushingSubmitted By:

2 5

Sample Location

Sample ID

Lab Number

Total Exchange Capacity (M. E.)

pH of Soil Sample

Organic Matter, Percent

SULFUR: p.p.m.

Mehlich III Phosphorous:

CALCIUM:Desired Value

Value Found

Deficit

MAGNESIUM:Desired Value

Value Found

Deficit

POTASSIUM: Desired Value

Value Found

Deficit

SODIUM:

Calcium (60 to 70%)

Magnesium (10 to 20%)

Potassium (2 to 5%)

Sodium (.5 to 3%)

Other Bases (Variable)

Exchangable Hydrogen (10 to 15%)

Boron (p.p.m.)

Iron (p.p.m.)

Manganese (p.p.m.)

Copper (p.p.m.)

Zinc (p.p.m.)

Aluminum (p.p.m.)

Sample Depth in inches

lbs / acre

lbs / acre

lbs / acre

lbs / acre

lbs / acre

as (P O )

Fr Lawn N

Control Area #1

52

6

24.55

7.3

7.43

56

313

6677

7072

707

1157

765

331-434

284

72.02

19.64

1.73

2.52

4.10

0.00

1.33

63

19

8.94

48.23

167

Fr Lawn S

Test Area #1

53

6

18.58

7.2

7.75

56

295

5054

5034-20

535

1005

579

372-207

254

67.73

22.54

2.57

2.97

4.20

0.00

0.85

147

22

7.45

55.5

222

Logan Labs, LLC


Page 39

230 175

Control Area #1 Test Area #1

765 579

707 535

6677 5054

Acceptable Levels Acceptable Levels


Page 40

Acceptable Levels

Test Area #1

Acceptable Levels

Control Area #1Test Area #1 Control Area #1

3477 6256

368 662

398 717

175-184 184-230

Rain Systems – El Sereno Middle School – Los Angeles, CA

Soil Testing Recommendations from September 2018:

Front Lawn North (Test Area #1) Recommendations-

• Three (3) individual applications of Gypsum - Calcium Products SO4 @ 15#/1000 ft.Leach that night with at least 1 hour of water (or time application prior to flushingrainfall) to displace sodium. Apply Gypsum applications 3-4 weeks a part in schedule.

• Three (3) individual applications of 9-9-0 + 11% Iron (Best Products) @ .54# N-P-K (6#product/1000 ft. Blow any remaining material off sidewalk, as iron may stain walkway.Water for at least 20 minutes after application. Apply 9-9-9 applications 4 weeks a partin schedule.

• Three (3) individual applications of Manganese sulfate (31%) @ 3#/1000 ft. Water inproduct thoroughly after application. Apply Manganese applications 4 weeks a part inschedule.

Front Lawn South (Control Area #1) Recommendations-

• Three (3) individual applications of Gypsum - Calcium Products SO4 @ 15#/1000 ft.Leach that night with at least 1 hour of water (or time application prior to flushing rainfall)to displace sodium. Apply Gypsum applications 3-4 weeks a part in schedule.

• Two (2) individual applications of 9-9-0 + 11% Iron (Best Products) @ .54# N-P-K (6#product/1000 ft. Blow any remaining material off sidewalk, as iron may stain walkway.Water for at least 20 minutes after application. Apply 9-9-9 applications 4 weeks a part inschedule.

• Three (3) individual applications of Manganese sulfate (31%) @ 3#/1000 ft. Water inproduct thoroughly after application. Apply Manganese applications 4 weeks a part inschedule.


Page 41

Soil Report

Paul Cushing GC and Sports Turf Agronomic ServicesCompany:

7/19/2018Date:Rain Systems El Sereno MSJob Name:

Paul CushingSubmitted By:

2 5

Sample Location

Sample ID

Lab Number

Total Exchange Capacity (M. E.)

pH of Soil Sample

Organic Matter, Percent

SULFUR: p.p.m.

Mehlich III Phosphorous:

CALCIUM:Desired Value

Value Found

Deficit

MAGNESIUM:Desired Value

Value Found

Deficit

POTASSIUM: Desired Value

Value Found

Deficit

SODIUM:

Calcium (60 to 70%)

Magnesium (10 to 20%)

Potassium (2 to 5%)

Sodium (.5 to 3%)

Other Bases (Variable)

Exchangable Hydrogen (10 to 15%)

Boron (p.p.m.)

Iron (p.p.m.)

Manganese (p.p.m.)

Copper (p.p.m.)

Zinc (p.p.m.)

Aluminum (p.p.m.)

Sample Depth in inches

lbs / acre

lbs / acre

lbs / acre

lbs / acre

lbs / acre

as (P O )

Soccer Fld

Test Area #2

97

6

18.68

7.6

7.51

36

1406

5080

4545-535

537

1118

582

1168

207

60.83

24.94

8.02

2.41

3.80

0.00

1.61

341

19

4.2

22.7

193

Soccer Fld

Control Area #2

98

6

19.35

7.7

8.66

38

1559

5263

4566-697

557

1162

603

1509

205

58.99

25.02

10.00

2.30

3.70

0.00

1.68

268

18

3.28

22.38

155

Logan Labs, LLC


Page 42

Acceptable Levels

Acceptable Levels

Test Area #2 Control Area #2

5080 5263

537 557

582 603

166-175 175-184

Rain Systems – El Sereno Middle School – Los Angeles, CA

Soil Testing Recommendations from July 2018:

Soccer Field (Test Area #2) Recommendations-


• Three (3) individual applications of Manganese sulfate (31%) @ 3#/1000 ft. Water inproduct thoroughly after application. Apply Manganese applications 3-4 weeks a part inschedule.

Soccer Field (Control Area #2) Recommendations-


• Three (3) individual applications of Manganese sulfate (31%) @ 3#/1000 ft. Water inproduct thoroughly after application. Apply Manganese applications 3-4 weeks a part inschedule.


Page 43

SOIL ANALYSIS RECOMMENDATIONS

All soil amendment products listed below are Calcium Products (12)

TEST AREA #1, FRONT LAWN NORTH (7,020 sqft of irrigated turf)

TEST AREA #2, SOCCER FIELD (45,000 sqft of irrigated turf)

Based on soil sample testing of Test Areas #1 and #2 at El Sereno MS, Paul Cushing, Agronomist, made the following recommendations in order to reduce sodium levels and maintain proper soil chemistry. Rain Systems recommendations include soil testing annually after installation for the 3 year life cycle of the hydrogel, to ensure the highest possible water savings.

Three (3) individual applications of Gypsum - Calcium Products SO4 @ 15#/1000 ft. Leach that night with at least 1 hour of water (or time application prior to flushing rainfall) to displace sodium. Apply Gypsum applications 4 weeks a part in schedule.

Two (2) individual applications of Signature 24-4-8 @ 1# N/1000 ft. (4.2# product/1000 ft.) Applications should be made at 8-week intervals.

Three (3) individual applications of Manganese sulfate (31%) @ 3#/1000 ft. Water in product thoroughly after application. Apply Manganese applications 3-4 weeks a part in schedule.

Three (3) individual applications of Gypsum - Calcium Products SO4 @ 15#/1000 ft. Leach that night with at least 1 hour of water (or time application prior to flushing rainfall) to displace sodium. Apply Gypsum applications 4 weeks a part in schedule.

Three (3) individual applications of 9-9-0 + 11% Iron (Best Products) @ .54# N-P-K (6# product/1000 ft. Blow any remaining material off sidewalk, as iron may stain walkway. Water for at least 20 minutes after application. Apply 9-9-9 applications 4 weeks a part in schedule.

Two (2) individual applications of Signature 24-4-8 @ 1# N/1000 ft. (4.2# product/1000 ft.) Applications should be made at 8-week intervals.

Three (3) individual applications of Manganese sulfate (31%) @ 3#/1000 ft. Water in product thoroughly after application. Apply Manganese applications 4 weeks a part in schedule.


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ESTIMATED COSTS FOR SOIL MONITORING, ANALYSIS AND MATERIALS

Estimated Costs for Soil Monitoring, Analysis and Materials for both Test Areas(December 2019 - June 2021)

Soil Testing $500Materials Prices ranging from $0 - $2000 per application

TBD, based on future soil testing

SO4 100# / application (2 bags) – 300# total or 6 total bags9-9-9 50# / application (1 bag) – 150# total or 3 total bags 24-4-8 50# / application (1 bag) – 150# total or 3 total bagsManganese 30# /application (1 bag) - 90# total or 2 total bags

SO4 700# / application (14 bags) – 2,100# total or 42 total bags24-4-8 200# / application (4 bags) – 400# total or 8 total bagsManganese 150# /application (3 bags) - 450# total or 9 total bags

Estimated Materials Needed and Quantities for Test Area #1, Front Lawn North

TEST AREA #1, FRONT LAWN NORTH AND TEST AREA #2, SOCCER FIELD

As part of this pilot, Rain Systems will assume all expenses for El Sereno MS Test Areas through June 2019.

Rain Systems recommendations include soil testing annually after installation for the 3-year life cycle of the hydrogel, to ensure the highest possible water savings. Any future application of Calcium Products (12) will be based on soil analysis and recommendations by Paul Cushing, Agronomist (5)

Estimated Materials Needed and Quantities for Test Area #2, Soccer Field


Page 45

APPENDIX CSDS AND PROP 65 STATEMENTS RAIN SYSTEMS PRECISION INJECTION MACHINE PILOT

INSTALLING HYDROGEL TO REDUCE WATER USAGE FOR TURF IRRIGATIONEL SERENO MIDDLE SCHOOLJUNE 13, 2018 - DECEMBER 31, 2018

Soil Moist (1) hydrogel was used during this study, this appendix includes the SDS and Prop 65 Statements for Soil Moist Hydrogels. Calcium Products have been approved by the District Office of Environmental Health and Safety (OEHS) and will be applied as recommended by Agronomist, Paul Cushing based on soil testing.

1 Prop 65Soil Moist Hydrogel (aka Cross-link polymer)JRM Chemical

2 SDSSoil Moist Hydrogel (aka Cross-link polymer)JRM Chemical

3 SDSSuperCal S04 Pelletized GypsumCalcium Products

4 Prop 65SuperCal S04 Pelletized GypsumCalcium Products

5 SDSSuperCal 98G Pelletized LimestoneCalcium Products

6 Prop 65SuperCal 98G Pelletized LimestoneCalcium Products


Page 46

Prop65RequirementsforSoilMoistgranules

SoilMoistisacopolymerofacrylicacid(Propenicacid)andacrylamide(2-Propenamide).

Initialproductcomposition:ComponentName Component% Prop65requirements[4]Polyacrylamide 18-20% NOTLISTED

CAS#9003-06-9http://www.cas-no.org/9003-06-9

Propenicacid 8-10% NOTLISTEDCAS#103455-29-4http://www.cas-no.org/103455-29-4

AmmoniumPersulfate(catalyst) <0.01% NOTLISTEDCAS#7727-54-0http://www.cas-no.org/7727-54-0

Finalproducthaslessthan200ppm(<200ppm)ofacrylamidemonomer.ANSIStandard60fordrinkingwaterrequirethemonomertobelessthan500ppm(<500ppm).[1,2,3]

Degradedproductcomposition:

ComponentName Prop65requirements[4]CarbonDioxide NOTLISTEDAmmonium NOTLISTEDWater NOTLISTEDReferences:

1. NSFANSI60(Page28,Reference4)https://www.nsf.org/newsroom_pdf/NSF-ANSI_60_watemarked.pdf

2. TREATMENTTECHNIQUESFORACRYLAMIDEANDEPICHLOROHYDRIN(40CFR141.111)https://www.gpo.gov/fdsys/pkg/CFR-2012-title40-vol24/pdf/CFR-2012-title40-vol24-sec141-111.pdf

3. OEHHAAcrylamideDailyMaximumDosage:140micrograms/dayhttps://oehha.ca.gov/media/downloads/proposition-65/chemicals/madl022610.pdf

4. TheProposition65Listhttps://oehha.ca.gov/proposition-65/proposition-65-list


Page 47

SAFETY DATA SHEET

Rev. 03/18/16SDS 03

1. IDENTIFICATION OF THE SUBSTANCE/PREPARATION AND THE COMPANY

Product name: Company:

Telephone: 216-475-8488 Fax: 216-475-6517 E-mail: [email protected] Emergency 800-962-4010

SOIL MOISTTM

JRM CHEMICAL INC4881 NEO PARKWAYCLEVELAND, OH 44128

Product Use: product aid in commercial applications.

2. HAZARDS IDENTIFICATION

Appearance and Odor:

Form: Granular solidColor: White

Odor: None

Potential Health Effects:None. See Section 11 for more information.

Potential Physical/Chemical Effects:The product swells in water. The product when wet renders surfaces extremely slippery.

OSHA Regulatory Status:This material is not considered hazardous in accordance with OSHA 29 CFR 1910.1200.

Potential Environmental Effects:None. See Section 12 for more information.

Other information No information available.

3. COMPOSITION/INFORMATION ON INGREDIENTS

Identification:Crosslinked polymer

Regulated Components:None.

4. FIRST AID MEASURES


Page 48

mailto:[email protected]

Inhalation: Move to fresh air.

Skin contact: Wash with water and soap as a precaution. Get medical attention if irritation develops and persists.

Eye contact: Rinse thoroughly with plenty of water, also under the eyelids. Get medical attention.

Ingestion: Rinse mouth with water. Do not induce vomiting.

5. FIRE FIGHTING MEASURES

Suitable extinguishing media: Water. Water spray. Foam. Dry powder. Carbon dioxide (CO2).

Unsuitable extinguishing media: None.

Precautions: The product swells in water The product when wet renders surfaces extremely slippery

Special protective equipment for firefighters: No special protective equipment required.

Specific methods: Keep personnel removed and upwind of fire.

Specific hazards: In the event of fire the following can be released: Nitrogen Oxides. Carbon Oxides.

Flash point (°C): Not applicable.

Auto ignition temperature (°C): Not applicable.

6. ACCIDENTAL RELEASE MEASURES

Personal precautions: No special precautions required. The product swells in water. The product when wet renders surfaces extremely slippery

Environmental precautions: As with all chemical products, do not flush into surface water.

Methods for cleaning up: Do not flush with water. Clean up promptly by sweeping or vacuum Keep in suitable and closed containers for disposal. After cleaning, flush away traces with water.

7. HANDLING AND STORAGE

Handling: Avoid contact with skin and eyes. Avoid dust formation. Do not breathe dust. Wash hands before breaks and at the end of workday.

Storage: Keep in a dry, cool and well-ventilated place. The recommended storage temperature is 5-30 °C.

Technical measures/Precautions: No special precautions required.

Incompatible products: Strong oxidizing agents. Acids.

Technical measures/Storage conditions: No special storage conditions required.

8. EXPOSURE CONTROLS / PERSONAL PROTECTION

Occupational Exposure Limits:None.

Engineering measures: Use local exhaust if dusting occurs. Natural ventilation is adequate in absence of dusts.

Personal protective equipment:

Respiratory protection: Dust safety masks are recommended where concentration of total dust is more than 10 mg/m3.

Hand protection: PVC or other plastic material gloves.

Eye protection: Safety glasses with side-shields. Do not wear contact lenses where this product is used.


Page 49

Skin and body protection: Chemical resistant apron or protective suit if splashing or repeated contact with solution is likely.

Hygiene measures: Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday.

9. PHYSICAL AND CHEMICAL PROPERTIES

Form: Granular solid

Color: White

Odor: None

pH: 5 - 8 @ 5 g/L

Melting point/range (°C): > 150°C

Flash point (°C): Not applicable.

Boiling point (°C): Not applicable

Auto ignition temperature (°C): Not applicable.

Vapor pressure (mm Hg): Not applicable

Approx. bulk density: 0.6 - 0.9Viscosity (mPa.s): See Technical Bulletin

Water solubility: Insoluble

LogPow: -2

10. STABILITY AND REACTIVITY

Stability: Stable. Hazardous polymerization does not occur.

Materials to avoid: Strong oxidizing agents. Strong acids. Oxidizing agents may cause exothermic reactions.

Hazardous decomposition products: Thermal decomposition may produce: nitrogen oxides (NOx), carbon oxides (COx). Hydrogen cyanide (hydrocyanic acid).

11. TOXICOLOGICAL INFORMATION

Product Information

Acute toxicity:

Oral: LD50/oral/rat > 5000 mg/kg

Dermal: LD50/dermal/rat > 5000 mg/kg

Inhalation: The product is not expected to be toxic by inhalation.

Irritation:

Skin: Not irritating.

Eyes: Not irritating.

Sensitization: Not sensitizing.

Mutagenicity: Not mutagenic.


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Carcinogenicity: Not carcinogenic.

Reproductive effects: Not toxic for reproduction.

Chronic toxicity: No chronic effects.

12. ECOLOGICAL INFORMATION

Product Information

Aquatic toxicity:

Toxicity to fish: LC50/Danio rerio/96 hours > 100 mg/L (OECD 203)

Toxicity to daphnia: EC50/Daphnia magna/48 hours > 100 mg/L (OECD 202)

Toxicity to algae: IC50/Scenedesmus subspicatus/72 hours > 100 mg/L (OECD 201)

Environmental fate:Persistence and degradability: Not readily biodegradable.

Hydrolysis: Does not hydrolyze.

Bioaccumulation: Does not bioaccumulate.

LogPow: -2LogKow: Not determined.

13. DISPOSAL CONSIDERATIONS

Disposal: Dispose of in accordance with local, state and federal regulations.

Container: Rinse empty containers with water and use the rinse water to prepare the working solution. Can be landfilled or incinerated, when in compliance with local, state and federal regulations.

14. TRANSPORT INFORMATION

DOT:Not classified as dangerous in the meaning of DOT regulations.

IMDG/IMO:Not classified as dangerous in the meaning of IMO/IMDG regulations.

ICAO/IATA:Not classified as dangerous in the meaning of ICAO/IATA regulations.

15. REGULATORY INFORMATION

Product Information

US SARA Reporting Requirements: None.

RCRA status : Not RCRA hazardous.

SARA (Section 311/312) hazard class: Not concerned.

International Inventories:

USA (TSCA): All components of this product are either listed on the inventory or are exempt from listing.


Page 51

China (IECSC): All components of this product are either listed on the inventory or are exempt from listing.

European Union (REACH): All components of this product have been registered or pre-registered with the EuropeanChemicals Agency or are exempt from registration.

Australia (AICS): All components of this product are either listed on the inventory or are exempt from listing.

Japan (ENCS): All components of this product are either listed on the inventory or are exempt from listing.

Korea (ECL): Status not yet confirmed. For Research & Development purposes only.Philippines (PICCS): Status not yet confirmed. For Research & Development purposes only

Taiwan (CSNN): All components of this product are either listed on the inventory or are exempt from listing.

New Zealand (NZloC): All components of this product are either listed on the inventory or are exempt from listing.

16. OTHER INFORMATION

16. OTHER INFORMATIONNFPA and HMIS Ratings:

NFPA:

Health: 1Flammability: 1Instability: 0

HMIS:

Health: 1Flammability: 1Physical Hazard: 0PPE Code: B

This MSDS was prepared in accordance with the following: ISO 11014-1: Material Safety Data Sheet for Chemical Products ANSI Z400.1-2004; Material Safety Data Sheets - Preparation

Revision Number: 03

The information provided in this Safety Data Sheet is correct to the best of our knowledge, information and belief at the date of its publication. The information given is designed only as a guidance for safe handling, use, processing, storage, transportation, disposal and release and is not to be considered a warranty or quality specification. The information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process, unless specified in the text.


Page 52

Calcium Products

Safety Data Sheet

Product Name: SuperCal 98G Updated: June 2015

Section 1 – PRODUCT AND COMPANY IDENTIFICATION

Manufacturer: Calcium Products, 2520 N. Loop Dr. #7100, Ames, IA 50010

Product Name: SuperCal 98G

Common Name: Calcium carbonate, limestone

Chemical Name: Calcium carbonate

Chemical formula: CaCO3

Chemical Type: Mineral ore

Emergency Contact: (800) 255-8196 (M – F, 7:30am – 4:30pm CST)

Poison Control: (800) 222-1222 (24 hrs)

Section 2 – HAZARDS IDENTIFICATION

DESCRIPTION: Brown granular mix with slight mineral odor.

HEALTH HAZARDS: May be irritating to the respiratory tract, eyes, and skin. Ingestion may cause gastrointestinal

upset.

MEDICAL CONDITIONS AGGRAVATED BY EXPOSURE: Pre-existing respiratory, skin, or eye conditions.

EYE CONTACT: Direct contact with dust may cause irritation by mechanical abrasion.

SKIN CONTACT: Direct contact may cause irritation by mechanical abrasion.

INGESTION: If ingested, intestinal obstruction may occur if the material hardens, especially in the pyloric

region.

INHALATION: Dusts may irritate the nose, throat, and respiratory tract by mechanical abrasion. Coughing,

sneezing, and shortness of breath may occur following exposures in excess of appropriate

exposure limits.

Section 3 – COMPOSITION & INFORMATION ON INGREDIENTS

INGREDIENTS CAS REGISTRY# % BY WEIGHT MSHA/OSHA PEL ACGIH TLV

Calcium carbonate 1317-65-3 85-95% (T) 15 mg/m3 (I) 10 mg/m3

Calcium lignosulfonate 8061-52-7 1-2%

(T) = total dust (I) = inhalable fraction

Section 4 – FIRST AID MEASURES

EYES: In case of contact, immediately flush eyes with water for a minimum of 15 minutes. Warm water

is recommended but cold water may be used.


Page 53

SKIN: In case of skin contact, immediately rinse area with water. Cover irritated are with an emollient.

Remove contaminated clothing and shoes. Wash clothing before reuse. Thoroughly clean shoes

before reuse. Seek medical attention if irritation persists.

INGESTION: Small amounts of (a tablespoon) swallowed during normal handling operations are not likely to

cause injury or irritation. Ingestion of large amounts may cause gastrointestinal irritation and

blockage. Seek medical attention if conditions worsen.

INHALATION: If a person inhales a large amount of nuisance dust, move exposed person to fresh air at once.

Other measures are usually unnecessary.

Section 5 – FIRE FIGHTING MEASURES

FLAMMABLE PROPERTIES: Not flammable or combustible. NFPA Hazard Class No: 1/0/0

EXTINGUISHING AGENT: Dry chemical, foam, water, fog or spray.

FLAMMABLE LIMITS IN AIR: Not flammable.

UNUSUAL FIRE AND EXPLOSION HAZARD: None.

Section 6 – ACCIDENTAL RELEASE MEASURES

STEPS TO BE TAKEN IN CASE MATERIAL IS RELEASED OR SPILLED

Use dry methods to collect spilled materials, and reuse clean materials. Avoid generating dust. Do not clean up with

compressed air. Minimize dust by evacuating area downwind in the case of large spills. Store contaminated materials in

dry, sealed plastic or non-aluminum metal containers. Residues on surfaces may be washed with water.

None of the components in this product are subject to the reporting requirements of Title III or SARA, 1986 and 40 CFR

372.

Section 7 – HANDLING AND STORAGE

Store in a cool, dry, well-ventilated location. Do not store near acids or other incompatible materials. Keep away from

moisture.

Respirable quartz containing dust may be generated during processing, handling, and storage. Do not breathe dust and

avoid contact with skin or eyes.

Section 8 – EXPOSURE CONTROL & PERSONAL PROTECTION

RESPIRATORY PROTECTION: NIOSH approved particulate respirator if required.

EYE PROTECTION: Safety glasses with side shield, goggles, or face mask recommended.

SKIN PROTECTION: No personal protection is recommended.


Page 54

VENTILATION: Local exhaust ventilation recommended.

Section 9 – PHYSICAL AND CHEMICAL PROPERTIES

APPEARANCE AND ODOR: Light brown granular mix with slight detectable odor.

SPECIFIC GRAVITY: 2.7 – 2.9 g/cc pH: 7.66

BOILING POINT: N/A VAPOR PRESURE: N/A

VAPOR DENSITY IN AIR: N/A FLASH POINT: Not flammable.

EVAPORATION RATE: Zero SOLUBILITY IN WATER: Negligible

Section 10 – STABILITY AND REACTIVITY

STABILITY: Stable CONDITIONS TO AVOID: Temperatures above 825°C

INCOMPATABILITY (Materials to avoid):

Material is soluble in acid with concomitant release of carbon dioxide. Avoid exposure to acids.

HAZARDOUS DECOMPOSITION PRODUCTS:

When heated to high temperatures above 825°C, product may decompose to calcium oxide with release of carbon dioxide.

Section 11 – TOXICOLOGICAL INFORMATION

Calcium carbonate

NOTE: Calcium Products has not conducted specific toxicity tests on this product.

Exposure route: Inhalation, skin, and/or eye contact.

Target organs: Eyes, skin, respiratory system.

Acute Effect: Calcium carbonate dust has an irritant effect on eyes, skin, and respiratory system. It has been reported that

there may be a silicosis risk when using impure limestone containing an excess of 3% quarts. However, it is claimed that

pure calcium carbonate does not cause pneumoconiosis. Adverse health effects have generally not been reported in

literature among workers exposed to CaCO3.

Section 12 – ECOLOGICAL INFORMATION

Calcium carbonate

Note: Calcium Products has not conducted specific ecological tests on this product. The product is also used as an animal

feed ingredient and agricultural liming material.


Page 55

Section 13 – DISPOSAL CONSIDERATIONS

WASTE DISPOSAL METHOD

Calcium carbonate (limestone) is not classified as a hazardous waste under RCTA Section 3001. Use normal waste

disposal procedures that are in compliance with federal, state, and local regulations.

Section 14 – TRANSPORT INFORMATION

DOT HAZARD CLASSIFICATION: None

PLACARD REQUIRED: None

LABEL REQUIRED: Label as required by OSHA Hazards Communication Standard [29 CFR 1910.1200 (f)] and applicable

state and local regulations.

Section 15 – REGULATORY INFORMATION

FDA: Product is manufactured for agricultural applications. As such, FDA regulations do not apply.

Section 16 – OTHER INFORMATION

Revised June 2015

CFR: US Code of Federal Regulations

DOT: Department of Transportation

IARC: International Agency for Research on Cancer

IDLH: Immediately Dangerous to Life and Health

NIOSH: National Institute for Occupational Safety and Health, US Department of Health and Human Services

NTP: National Toxicology Program

OSHA: Occupational Safety and Health Administration

PEL: Permissible Exposure Limits

SARA Title III: Title III of the Superfund Amendments and Reauthorization Act, 1986

TLV: Threshold Limit Value

TWA: Time-weighted Average

FDA: Food and Drug Administration


Page 56

Proposition 65 Requirements for SuperCal 98G Pelletized Limestone (all grades)

References:

1. The Proposition 65 List:https://oehha.ca.gov/proposition-65/proposition-65-list

Component Name Component % Prop 65 Requirements[1]

Calcium carbonate (limestone)

98% NOT LISTEDCAS# 1317-65-3http://www.cas-no.org/1317-65-3

Calcium lignosulfonate 1-2% NOT LISTEDCAS# 8061-52-7http://www.cas-no.org/8061-52-7

Degraded product composition does not differ from initial product composition.

Signed,

Andrew Hoiberg, Ph.D.V.P., Research & Development


Page 57

Calcium Products

Safety Data Sheet

Product Name: SuperCal SO4 Updated: June 2015

Section 1 – PRODUCT AND COMPANY IDENTIFICATION

Manufacturer: Calcium Products, 2520 N. Loop Dr. #7100, Ames, IA 50010

Product Name: SuperCal SO4

Common Name: Calcium sulfate dihydrate, gypsum

Chemical Name: Calcium sulfate dihydrate

Chemical formula: CaSO4 • 2H2O

Chemical Type: Mineral ore

Emergency Contact: (800) 255-8196 (M – F, 7:30am – 4:30pm CST)

Poison Control: (800) 222-1222 (24 hrs)

Section 2 – HAZARDS IDENTIFICATION

DESCRIPTION: Brown granular mix with slight mineral odor.

HEALTH HAZARDS: May be irritating to the respiratory tract, eyes, and skin. Ingestion may cause gastrointestinal

upset.

MEDICAL CONDITIONS AGGRAVATED BY EXPOSURE: Pre-existing respiratory, skin, or eye conditions.

EYE CONTACT: Direct contact with dust may cause irritation by mechanical abrasion.

SKIN CONTACT: Direct contact may cause irritation by mechanical abrasion.

INGESTION: If ingested, intestinal obstruction may occur if the material hardens, especially in the pyloric

region.

INHALATION: Dusts may irritate the nose, throat, and respiratory tract by mechanical abrasion. Coughing,

sneezing, and shortness of breath may occur following exposures in excess of appropriate

exposure limits.

Section 3 – COMPOSITION & INFORMATION ON INGREDIENTS

INGREDIENTS CAS REGISTRY# % BY WEIGHT MSHA/OSHA PEL ACGIH TLV

Calcium sulfate dihydrate 10101-41-4 85-95% (T) 15 mg/m3 (I) 10 mg/m3

Calcium lignosulfonate 8061-52-7 1-2%

(T) = total dust (I) = inhalable fraction

Section 4 – FIRST AID MEASURES

EYES: In case of contact, immediately flush eyes with water for a minimum of 15 minutes. Warm water

is recommended but cold water may be used.


Page 58

SKIN: In case of skin contact, immediately rinse area with water. Cover irritated are with an emollient.

Remove contaminated clothing and shoes. Wash clothing before reuse. Thoroughly clean shoes

before reuse. Seek medical attention if irritation persists.

INGESTION: Do not induce vomiting. If conscious, have person drink plenty of water. Seek medical attention

of contact poison control center immediately.

INHALATION: If a person inhales a large amount of nuisance dust, move exposed person to fresh air at once.

Other measures are usually unnecessary.

Section 5 – FIRE FIGHTING MEASURES

FLAMMABLE PROPERTIES: Not flammable or combustible. NFPA Hazard Class No: 1/0/0

EXTINGUISHING MEDIA: Dry chemical, foam, water, fog or spray.

FLAMMABLE LIMITS IN AIR: Not flammable.

UNUSUAL FIRE AND EXPLOSION HAZARD: None.

HAZARDOUS COMBUSTION PRODUCTS: None. Above 1450°C, material can decompose and release sulfur dioxide

(SO2) and oxides of carbon.

Section 6 – ACCIDENTAL RELEASE MEASURES

STEPS TO BE TAKEN IN CASE MATERIAL IS RELEASED OR SPILLED

Use dry methods to collect spilled materials, and reuse clean materials. Avoid generating dust. Do not clean up with

compressed air. Minimize dust by evacuating area downwind in the case of large spills. Store contaminated materials in

dry, sealed plastic or non-aluminum metal containers. Residues on surfaces may be washed with water.

None of the components in this product are subject to the reporting requirements of Title III or SARA, 1986 and 40 CFR

372.

Section 7 – HANDLING AND STORAGE

Ensure proper ventilation, and respiratory and eye protection are used under dusty conditions. Dew point conditions or

other conditions causing presence of moisture will harden gypsum during storage. Excessive particulate concentrations in

workplace must be avoided even though it is inert and non-toxic.

Section 8 – EXPOSURE CONTROL & PERSONAL PROTECTION

RESPIRATORY PROTECTION: NIOSH approved particulate respirator if required.

EYE PROTECTION: Safety glasses with side shield, goggles, or face mask recommended.

SKIN PROTECTION: Long sleeves, cotton gloves recommended.


Page 59

VENTILATION: Local exhaust ventilation recommended.

Section 9 – PHYSICAL AND CHEMICAL PROPERTIES

APPEARANCE AND ODOR: Light brown granular mix with slight detectable odor.

SPECIFIC GRAVITY: 2.6 – 2.75 g/cc pH: 6.72

BOILING POINT: N/A VAPOR PRESURE: N/A

VAPOR DENSITY IN AIR: N/A FLASH POINT: Not flammable.

EVAPORATION RATE: Zero SOLUBILITY IN WATER: 2.1 g/L @ 20°C

Section 10 – STABILITY AND REACTIVITY

STABILITY: Stable CONDITIONS TO AVOID: Items listed under Incompatibility.

INCOMPATABILITY (Materials to avoid):

Aluminum (at high temperatures), diazomethane

HAZARDOUS DECOMPOSITION PRODUCTS:

When heated to high temperatures above 825°C, gypsum may emit toxic fumes of oxides of sulfur and calcium.

Section 11 – TOXICOLOGICAL INFORMATION

Calcium sulfate dihydrate

Exposure route: Inhalation, skin, and/or eye contact.

Target organs: Eyes, skin, respiratory system.

Acute Effect: Calcium sulfate dihydrate dust has an irritant action on mucous membranes of the respiratory tract and

eyes. There have been reports of conjunctivitis, chronic rhinitis, laryngitis, pharyngitis, impaired sense of smell and taste,

bleeding from the nose and reactions of tracheal and bronchial membranes in exposed workers.

Section 12 – ECOLOGICAL INFORMATION

No data available.

Section 13 – DISPOSAL CONSIDERATIONS

WASTE DISPOSAL METHOD

May be disposed of as an inert solid in sanitary landfill or by other procedures in accordance with all federal, state, and

local regulations. May be used as a supplement on land and on some agricultural products.


Page 60

Section 14 – TRANSPORT INFORMATION

DOT HAZARD CLASSIFICATION: None

PLACARD REQUIRED: None

LABEL REQUIRED: Label as required by OSHA Hazards Communication Standard [29 CFR 1910.1200 (f)] and applicable

state and local regulations.

Section 15 – REGULATORY INFORMATION

FDA: Product is manufactured for agricultural applications. As such, FDA regulations do not apply.

Section 16 – OTHER INFORMATION

Revised June 2015

CFR: US Code of Federal Regulations

DOT: Department of Transportation

IARC: International Agency for Research on Cancer

IDLH: Immediately Dangerous to Life and Health

NIOSH: National Institute for Occupational Safety and Health, US Department of Health and Human Services

NTP: National Toxicology Program

OSHA: Occupational Safety and Health Administration

PEL: Permissible Exposure Limits

SARA Title III: Title III of the Superfund Amendments and Reauthorization Act, 1986

TLV: Threshold Limit Value

TWA: Time-weighted Average

FDA: Food and Drug Administration


Page 61

Proposition 65 Requirements for SuperCal 98G Pelletized Limestone (all grades)

References:

1. The Proposition 65 List:https://oehha.ca.gov/proposition-65/proposition-65-list

Component Name Component % Prop 65 Requirements[1]

Calcium carbonate (limestone)

98% NOT LISTEDCAS# 1317-65-3http://www.cas-no.org/1317-65-3

Calcium lignosulfonate 1-2% NOT LISTEDCAS# 8061-52-7http://www.cas-no.org/8061-52-7

Degraded product composition does not differ from initial product composition.

Signed,

Andrew Hoiberg, Ph.D.V.P., Research & Development


Page 62

LAUSD Final Report REV 032419 - Rainsystems€¦ · technology in order to introduce these water saving products to the managed turf industry. * LAUSD Office of Environmental Health

Documents