2012-06-07_HYDROLOGY - M2001005

• Permit No: M2001005
• IBM Index Class Name: HYDROLOGY
• Doc Date: 6/7/2012
• Doc Name: Transit Mix Concrete Co Pit, Approval Period
• From: DWR
• Media Type: D
• Archive: No

Ms. Julia Keedy
June 6, 2012
Page 4
10. Adequate accounting of depletions and replacements (in acre -feet) must be provided to the
water commissioner (Brian. Sutton (cD-state. co. us) and the division engineer
( Div2Ground.WaterCa--)state.co.us) on forms and at times acceptable to both of them. The
accounting form(s) shall be sufficient to demonstrate that the net effective replacement
equaled or exceeded the total depletion on a monthly basis. All replacement water must be
concurrent with depletions in quantity, timing and location, except that releases aggregated
at the discretion of the division engineer may occur in a later month than the depletions.
Said accounting must be received by the 10th of the month following the reporting period.
The proposed accounting form is provided in the attached Table 4.
11. For all sources of dry-up the following conditions apply related to fields containing alfalfa:
a. Credit from dry-up fields containing alfalfa will be assessed in the following manner:
For fields deep tilled or chemically treated to kill alfalfa, 100% credit will be
given for consumptive use as otherwise computed under the conditions of
this approval.
For fields not deep tilled or chemically treated to kill alfalfa, records of
monthly monitoring of depth to groundwater at existing irrigation wells or
existing or new monitoring wells or piezometers within % -mile of each alfalfa
field and capable of measuring ground water levels to a depth at least 8 feet
below the lowest point of elevation of the field must be maintained. The
wells or piezometers to be used must be identified and located by UTM
coordinates.
Credits will be reduced according to the following table when depth to groundwater
is less than the depth assumed to provide no significant contribution to alfalfa
growth. Measurements of depth to ground water shall be recorded on forms
acceptable to the Division Engineer and submitted to the Division Engineer's Office
by the 10th of each month. Measurements taken at the start of each month will
determine the necessary reduction in credit to be applied during the following
month.
Depth to Ground
Water (Feet)
Percent Reduction
in CU Credit
Depth to Ground
Water (Feet)
Percent Reduction
in CU Credit
1
100%
5
35%
2
90%
6
20%
3
75%
7
15%
4
50%
8
10%
12. Any request for amendment must include identification of the subject well (pit), an estimate
of the amount of water that will be lost, an update of the total stream depletions by reach
and month including post -plan depletions, and identification of the source of additional
replacement water. Approval of an amendment will be contingent upon demonstrating it
has sufficient replacement water to cover the additional well depletions.
13. The approval of this substitute water supply plan does not relieve the applicant of the
requirement to obtain a water court approved permanent plan for augmentation to ensure