Section R12-15-725. Pinal AMA – Groundwater Allowance

The Director shall calculate the groundwater allowance for a certif- icate or designation in the Pinal AMA as follows:

1.        If the application is for a certificate, multiply the applica- ble allocation factor in the table below for the manage- ment period in effect on the date of application by the

annual estimated water demand for the proposed subdivi- sion.

MANAGEMENT PERIOD/ DATE OF APPLICATION	ALLOCATION FACTOR
Third	10
Fourth	10
Fifth	5
After Fifth	0

2.        If the application is for a designation:

a.         If the applicant was designated as having an assured water supply as of October 1, 2007:

i.         Multiply the applicant’s service area population as of October 1, 2007 by 125 gallons per capita per day and multiply the product by 365 days. The service area population shall be determined using the methodology set forth in Section 5- 103(D) of the Third Management Plan for the Pinal AMA.

ii.        Convert the number of gallons determined in subsection (A)(2)(a)(i) into acre-feet by divid- ing the number by 325,851 gallons.

iii.      Determine the number of residential lots within plats that were recorded as of October 1, 2007 but not served water as of that date, and to which the applicant commenced water service by January 1, 2010.

iv.       Multiply the number of lots determined in sub- section (A)(2)(a)(iii) of this Section by 0.35 acre-foot per lot.

v.        Add the volume from subsection (A)(2)(a)(ii) of this Section and the volume from subsection (A)(2)(a)(iv) of this Section.

b.        If the applicant provided water to its customers before October 1, 2007 but was not designated as having an assured water supply as of that date, and a complete and correct application for designation is filed before January 1, 2012, multiply the applicant’s service area population as of October 1, 2007 by 125 gallons per capita per day and multiply the product by 365 days. The service area population shall be determined using the methodology in Section 5- 103(D) of the Third Management Plan for the Pinal AMA.

c.         If the applicant provided water to its customers before October 1, 2007 but was not designated as having an assured water supply as of that date, and a complete and correct application for designation is filed on or after January 1, 2012, the applicant’s groundwater allowance is zero acre-feet.

d.        If the applicant commenced providing water to its customers on or after October 1, 2007, the appli- cant’s groundwater allowance is zero acre-feet.

3.        For each calendar year of a designation, the Director shall calculate the volume of incidental recharge for a desig- nated provider within the Pinal AMA and add that vol- ume to the designated provider’s groundwater allowance. The Director shall calculate the volume of incidental recharge by multiplying the provider’s total water use from any source in the previous calendar year by the stan- dard incidental recharge factor of 4%. A designated pro- vider may apply for a variance from the standard incidental  recharge  factor  by  submitting   a  hydrologic

study demonstrating, to the satisfaction of the Director, that the ratio of the average annual amount of incidental recharge expected to be attributable to the designated pro- vider during the management period to the average annual amount of water expected to be withdrawn, diverted or received for delivery by the designated pro- vider for use within its service area during the manage- ment period is different than 4%. The hydrologic study shall include the amount of water withdrawn, diverted or received for delivery by the designated provider for use within its service area during each of the preceding five years and the amount of incidental recharge that was attributable to the designated provider during each of those years. The Director may establish a different inci- dental recharge factor for the designated provider upon such demonstration.

Historical Note

Adopted effective February 7, 1995 (Supp. 95-1). Section repealed; new Section made by final rulemaking at 12

A.A.R. 3475, effective September 12, 2006 (Supp. 06-3). Section repealed; new Section made by final rulemaking at 13 A.A.R. 1394, effective October 1, 2007 (Supp. 07-

2). Amended by final rulemaking at 15 A.A.R. 1979,

effective January 2, 2010 (Supp. 09-4). Amended by final

rulemaking at 19 A.A.R. 4174, effective December 3,

2013 (Supp. 13-4).