Hidden Lake Instrument Modification

Baker, Caroline D
From: Davis, Erin B
Sent: Tuesday, January 10, 2023 8:52 AM
To: Baker, Caroline D
Subject: FW: [External] Hidden Lake Instrument Modification
Laserfiche Upload: Email & Attachments
DWR#: 20070828 v.1
Doc Date: 12/7/22
Doc Type: Mitigation — Mitigation Information
Doc Name: General topic of email title
From: Tugwell, Todd J CIV USARMY CESAW (USA) <[e-mail]>
Sent: Wednesday, December 7, 2022 7:44 PM
To: Wilson, Travis W. <[e-mail]>; [e-mail]; Brittingham, Cathy
<[e-mail]>; Bowers, Todd <[e-mail]>; Davis, Erin B <[e-mail]>
Cc: Kim Browning <[e-mail]>; Haywood, Casey M CIV USARMY CESAW (USA)
<[e-mail]>; Douglas Frederick <[e-mail]>; Scott Frederick
<[e-mail]>
Subject: [External] Hidden Lake Instrument Modification
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Good afternoon IRT,
Hidden Lake, LLC (Sponsor) has submitted a proposed modification to their instrument for the Hidden Lake Mitigation
Bank, which is attached for your review along with a cover letter. These documents have also been posted to the RIBITS
Cyber Repository for the bank site (see link and instructions provided below). If you are unable to access the document
or prefer to have a hard copy mailed to you, please let me know as soon as possible, and I will arrange to get you a copy
of the modification.
Proposed Modification: The changes to the instrument are proposed to eliminate the condition that all mitigation
requirements accepted by the bank be fulfilled with restoration credits at a 1:1 ratio, and that preservation credits only
be used for mitigation requirements in excess of a 1:1 ratio. In order to make this change, the Sponsor has proposed to
reassess credits generated through wetland preservation activities at the bank at a 10:1 ratio, resulting in a reduction of
preservation credits from 151 to 75.4, and a reduction of the total wetland credit provided by the bank from 199.4 to
123.8. Please note that this proposal was previously discussed during the NCIRT meeting held on August 9, 2022.
Following our initial review of the proposed changes, we have determined that this modification can be processed using
the streamlined review procedures outlined in Section 332.8(g)(2) of the 2008 Federal Mitigation Rule, which requires
an IRT review period of 30 calendar days from the date of this email notification. Please provide any comments by 5 PM
on January 6t", 2023. Within 30 days of the conclusion of the IRT review period (comment deadline), a copy of all
comments will be provided to the bank Sponsor and the IRT along with District Engineer's intent to approve or
disapprove this proposed modification.
30-Day Comment Start Date: December 7, 2022
30-Day Comment Deadline: January 6, 2023

60-Day Intent to Approve Deadline: February 5, 2023
Please be sure to log on to RIBITS before following the link below. Once in the Cyber Repository, select the arrow beside
appropriate folder to view and/or download the documents.
Cyber Repository Link: https://ribits.ops.usace.army.mil/ords/f?p=107:158:245582527829::NO
Thank you and please contact me with any questions,
Todd TugwelI
Chief, Mitigation Branch
Regulatory Division
Wilmington District, USACE
[phone]