1. Certified Landscape Irrigation Auditor Training

2. C.L.I.A. Training l Originally Developed by I.T.R.C. With a Grant From the California Department of Water Resources l Modified by the I.A. For Teaching Outside the State of California l Course Updated As of 3/10/00

3. Class objectives:  Students will be able to perform field tests on real systems  Students will be able to identify problems that cause poor uniformity  Students will be able to calculate an accurate watering schedule  Students will be able to perform field tests on real systems  Students will be able to identify problems that cause poor uniformity  Students will be able to calculate an accurate watering schedule

4. Important!Important! l You will need a calculator l Please turn off cell phones and pagers

5. Today You Will: l Conduct your first audit l Develop your first watering schedule round l Start to get a headache at around 3:45 pm l Conduct your first audit l Develop your first watering schedule round l Start to get a headache at around 3:45 pm

6. Tomorrow you will: l Review the concepts you learned today l Learn the final three steps of auditing l Conduct your 2nd audit (by yourselves!) l Calculate your 2nd schedule (by yourselves!) l Take your test and go home!

7. Your Auditing Manual l Introduction l Site inspection and tune-up l Performing field tests l Calculating a schedule l Appendices: Auditing Drip, ET sources, tables and charts, blank worksheets l Introduction l Site inspection and tune-up l Performing field tests l Calculating a schedule l Appendices: Auditing Drip, ET sources, tables and charts, blank worksheets

8. Software Package l Base Schedule Software –This is a simplified version that is easy use –It is based on the Base Schedule worksheet that you will do in class –Does all of the math for you –Other more in-depth software is available from ITRC

9. Key Irrigation Auditor Actions l Identify Equipment Problems l Determine Actual System Performance Based on Uniformity Tests l Adjust Run Times According to Season l Fine Tune Stations to Exposures l Trim Back System to Minimize Water Use

10. OPERATION Irrigation Audits l 1. Site inspection - system tune up l 2. System tests l 3. Calculate a Base Schedule

11. OPERATION Irrigation Management l 4. Implement - adjust base schedule l 5. Track water use l 6. System maintenance

12. Benefits of Scheduling l Water Savings = Money Savings l Healthier Turf l Reduced Chemical Use - Cleaner Environment l Less Strain on Distribution Systems

13. How much money can be saved?

14. Case Study #1 l Description: 152 ac. 7 Sites l Pre-Audit Water Use = 825,418 ccf (149.6 in.) l Post-Audit Water Use = 694,695 (125.9 in.) l Water Saved = 130,723 (23.7 in.)

15. Case Study #1 cont. l Value of Water Saved 130,723 ccf X $0.46/ccf = $60,132 l Cost of Audits 152 ac. X $50/ac. = $ 7,600 l Net Savings $60,132 - 7,600 = $52,532

16. Case Study #2 l Description: 180 ac. 36 Sites l Pre-Audit Water Use=401,769 ccf l Post-Audit Water Use=355,556 l Water Saved=46,213

17. Case Study #2 cont. l Value of Water Saved 46,213 ccf X $1.72/ccf = $79,486 l Cost of Audits 180ac. X 108/ac. = $19,440 l Net Savings $79,486 - 19,440= $60,046

18. This water savings is achieved by: l Checking and fixing equipment l Following the weather throughout the season l Maintaining the system at peak efficiency

19. UniformityUniformity (NEVER PERFECT) GOOD UNIFORMITY Depth of Water POOR UNIFORMITY Depth of Water

20. Station BeforeAfter 1 2 3 First Repair Equipment Balance Runtimes Between Stations Then Adjust Runtime According to Season Finally Trim Back to Save More JanDec 100% Site Trim = 1 JanDec Site Trim =.8 80% JanDecJanDec Turf Water Requirement Water Applied Average Amount Applied Turf Water Requirement

21. Site Inspection Step one, get the system working right

22. Site Inspection Priorities l Minor not major repairs l Low heads l Plugged heads l Bad adjustments l Tilted heads l No matched precipitation rate l Mix matched heads

23. Data to Collect During the Site Inspection l Site conditions and micro-climates l Point of connection data l Controller data l Brand of products used l Current watering schedule

24. Practice Session

33. Matched Precipitation Rate (MPR) l Nozzle GPM is in proportion with the area covered l Watering time is in proportion with the area covered l You must verify during the site inspection l Can drastically alter the DU

34. Break Time!

35. Field Work Evaluating your systems

36. Wind and Auditing l Do not audit if the wind is 8 mph or higher (unless the wind is always 8 mph or higher) l Use the upwind\downwind ratio to be sure l An anemometer can also be used to judge wind speed

37. Audit Plan and Irrigation Test Areas (Sub-Areas) l Two types of test areas (sub-area) –Overlapping: more than one station in test area –Stand alone: single station in test area

38. Identify Test Groups l Stand Alone l Overlapping Stand Alone Overlapping Sta. 1 Sta. 2

39. Flag Stations

40. Check System Pressure

48. Irregular Geometry Station 1 Station 2 Station 3

51. ITRC Cal Poly Detail "AT-A-HEAD" Placement RIGHT 5 10 15 20 25 50 75 100 125 150 175 200 WRONG 5 10 15 20 25 50 75 100 125 150 175 200 Offset Approx. 2 ft. PART CIRCLE HEADS LATERAL FULL CIRCLE HEADS R R R

52. Collect Other Data During Station Runs l Spacing of Sprinklers: Head to Head, Line-to-Line l Test Soil Type and Rootzone Depth

54. Spacing Measurement LINE-TO-LINE Station 1Station 2Station 3 Sprinkler SPRINKLER-TO-SPRINKLER SAMPLE Spacing Measurement: Triangular Spacing

57. Testing Run Times (Min.) l How Long the Station Runs for Test l Affects Quantity of Water in Catchments l Spray Heads = 3-6 Minutes l Rotary Heads = 8-16 Minutes l Can Be Estimated from The Rotation Speed of the Sprinkler

58. Field Work Hints l Set Up Ahead of Current Station l Always be Running a Station l Get Major Areas Done First l Radio Remote or Walkie Talkie l Assistance of Site Staff

59. Audit Plan and “Linking Stations” l To Reduce Field Time, “Link” Stations if Possible l Untested Station Uses Results from a Tested Station l Link ONLY if the Following are Similar: –Equipment –Spacing –Pressures

60. Let’s go get wet and dirty!