WQ0018708_Calibration Results_20110105

Barber, Jim
From: Barber, Jim
Sent: Wednesday, January 05, 2011 2:55 PM
- To: 'Brooks Barwick'
Cc: Shields, Joel; Honeycutt, Tony
Subject: RE: Calibration Results
Attachments: Baytree SI calibration doc.pdf
.Brooks and Bill;
As requested by Bill Stafford during our phone conversation on 4 January, I'm sending this!'email to address the information
provided to DWQ concerning the field calibration information sheets (copy attached) that was faxed to DWQ. The informatiori.
was from the site visit that Ms. Spearman, of the NC State Cooperative Extension, 'made to calibrate your solid set irrigation
system. The information provided is acceptable for addressing the calibration requirement in your spray irrigation permit. The
information provided should be placed in your operating record or wherever you maintains records for future review (by Baytree
Lakes, its ORC or DWQ inspectors), so future calibrations can be checked against this baseline information to determine
irrigation system condition`and operating efficiency.
I,
As.noted in the permit, the calibration of,you system is required each permit cycle (essentially once every five years) at a
minimum. Calibration verification of the system more frequently is certainly encouraged to identify any'potential issues with the
irrigation system that may require repair or parts replacement.
If you have any questions, don't hesitate to "call me, Joel or Tony.
Jim Barber
From: Brooks Barwick jmailto:[e-mail]1
Sent: Monday, December.20, 2010 2:49 PM
To: Barber, Jim
Subject: Calibration Results
'Jim, j '1
We are going to fax you the field calibration results that Soil and Water Conservation helped us obtain in calibrating our spray field
equipment on 12-3-10. Please review our permit and advise us if there are any other requirements on our part at this time.
Thank you 4
Bill Stafford
Brooks Barwick
91.0-588-4432. Office
' 910-214-9929 CeII
www. BayTreeLakes.com
btlCa intrstar.net
1

Dec 20 2010 3:49PM HP LASERJET FABAY TREE 9105884434
•it`• Bay Tree Utilities Company
33 W. Bay Ridge. Road
Harrells, NC 28444
Phone [phone]
Fax [phone]
Fax Cover Sheet
To:. Jim Barber
From: Bill Stafford
Date: 12/20/201 0 Fax .#
6 0) i(vp-
Total Number of pages including this cover sheet:
Comments

WETTED DIAMETER (ft)
Om wettable acres determination
for expected diameter)
Dec ,PO 2010 3:49PM HP LF1SERJET FABFlY TREE
'11
9105884434
• I
page 2
IRRIGATION EQUIPMENT 1,
FLOW METER
FIELD CALIBRATION
LOCATION: 604., Yee La -
PHONE: sb- 5Vt 94432
DATE OF FIELD CALIBRATION:01-4401t
FLOW METER SERIAL NUMBER:
l
REEL/GUN/SPRINKLER MAKE AND MODEL: Roia-4-11°
(see reverse for solid set system)
' a „
MEASURED RING SIZE (from irrigation design): %Doc -inches
Is ring within .01% of expected manufacturer size?
If not, ring must be replaced ,
I Se
Aydth
PRESSURE READINGS. AT PUMP:
AT REEL:
AT GUN :
• psi (optional)
si (optional);
•45 psi (required) 50
FLOW RATE (GPM) EXPECTED: /40.D gum
(from manufacturers chart MEASURED: j5.5 EPD1 - ma
and flow meter readout) VARIANCE: %
EXPECTED: i39 ft Lia -
MEASURED: i 119 ft VARIANCE: f(6.5 %
If wetted diameter is greater than 15% or flow rate variance is greater than 1O%,
contact a Certified Technical Specialist or irrigation specialist for assistance.
'And/or Explain findings:
CALIBRATOR; P)ec. -gam= &Jt14 fa41144Y"
(print. n (signtuie)
Phone:
NCSTATE -UNIVERSITY
COOPERATIVE
A&T STATE UNIVERS=
' allana EXISNSION -
AMMO RelpingPeopfe Pot Knowledge to Work
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Des? 20 2010, 3:49PM HP LFISERJET FFIBRY TREE
9105884c434
pace 3
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iFor solid set sprinklers, measure the gun pressure and wetted diameter of several
isprinklers (at least 10% of total) that are all alike in nozzle size4 Then take the
average of the pressures and put, in tli,e,N.4,-oin,:the, front of this sheet. Also take
the average of the wetted diameteriiiiiii put in the blank oii.th0, front of this sheet.
.
Sprinkler
.
qun Pressure
Wetted Diameter
1
Sprinkler I 3.Ag.
Ltk1
I 1
' hot "T --.
Sprinkler 2 A i
1411)
!.
Sprinkler 3 3-9) i
. 14 (0 _
ii
(.0 i 51, toi, to 5
Sprinkler 4
'
Average
4
•
,
.. • .
Measuring Wetted Diameter:
To measure wetted diameter, measure the distance from the gun
of water. This will give you the radius. Multiply this number by
Additional Notes:
.
. ,
. . .
•
. .
to
2 tio
, I
1
. '
the end of the throw
get diameter.
,
•