2025-09-18_HYDROLOGY - M1999034

• Permit No: M1999034
• IBM Index Class Name: Hydrology
• Doc Date: 9/18/2025
• Doc Name: Substitute Water Supply Plan
• From: Division of Water Resources
• To: DRMS
• Email Name: NCG
• Email Name: JLE
• Media Type: D
• Archive: No

Holcim South Platte Combined SWSP September 18, 2025
Plan IDs 3614, 4773, 3624, 4772, 4616, 3437, 3376, 3650, 3668, 5475, 5829, Ft 6243 Page 30 of
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10.All diversions shall be measured in a manner acceptable to the division engineer. The
Applicant shall install and have approved by the Water Commissioner all structures
prior to any credit or use in this SWSP. The Applicant shall maintain such measuring
devices as required by the division engineer for operation of this SWSP.
11 .The Division of Water Resources will not acknowledge any recharge activity conducted
without the knowledge of the water commissioner. The flow into the recharge site
must be metered and equipped with a continuous flow recorder unless the water
commissioner, in conjunction with the division engineer, determines adequate records
may be kept without such equipment.
12.The Applicant shall follow the attached Division 1 Recharge Protocol for the operation
of this SWSP, except that for the reasons described in this SWSP, evaporative losses
from the Lighthouse Cove Pond do not need to be considered.
13. The Applicant shall provide daily accounting (including, but not limited to diversions,
depletions, replacement sources, and river calls) on a monthly basis. The accounting
must be uploaded to the CDSS Online Reporting Tool within 30 days of the end of the
month for which the accounting applies (https://dwr.state.co.us/Tools/reporting). In
addition, the accounting must be submitted to the water commissioners [currently
Alec Hernandez ([e-mail]), David Bridge
([e-mail]), Shera Sumerford ([e-mail]), and
Graham Buggs ([e-mail])] within 30 calendar days of the end of the
month for which the accounting is being made. Instructions for using the tool are
available on the Division of Water Resources website on the "Services" ii "Data Ft
Information" page under the heading of "Online Data Submittal. Accounting and
reporting procedures are subject to approval and modification by the division
engineer. Accounting forms need to identify the WDID number for each structure
operating under this SWSP. NOTE: Monthly accounting, even during the winter non-
irrigation season, is required. Submitted accounting shall conform to the attached
Augmentation Plan Accounting Protocol.
In addition, the Applicant shall verify that each entity making replacements for this
plan have included this plan in their respective accounting submitted to the division
engineer. For this plan period those entities are the City of Greeley, City of
Longmont, Centennial Water and Sanitation District, City of Westminster, City of
Thornton, and the City of Aurora.
14.All return structures utilized in this plan must have a measuring device equipped with
an electronic recording device and must be approved by the water commissioner prior
to use. In addition, all charts or other output data associated with each measuring