LIHI Certificate #52 - Penacook Upper Falls Project, New Hampshire

Penacook Upper Project, LIHI #52
项目名称 Penacook Upper Falls
LIHI 证书编号 52
LIHI 证书期限 September 25, 2019 – September 24, 2032
所有者 Briar Hydro Associates, a subsidiary of Essex Hydro Associates, LLC
状态 新罕布什尔
地点 Located at river mile 1.0 on the Contoocook River in the Village of Penacook, New Hampshire.
装机容量 3.02 MW
平均年发电量 14,967 MWh
设施类型 径流式
联邦能源管理委员会 不。 P-6689 issued in 1984, expires 11/30/2024

The Penacook Upper Falls Project is located on the lower Contoocook River in Merrimack County in the southeastern New Hampshire Village of Penacook. The Village of Penacook is made up of a small part of the Town of Boscawen and the northern end of the City of Concord. The project is located on the extreme northern end of Concord, with a section of the tailrace crossing into Boscawen. The Contoocook River rises on the eastern slopes of Mt. Monadnock in southeastern New Hampshire and ends at the confluence with the Merrimack River. The river is about 71 miles long and flows in a generally north-easterly direction through the towns of Jaffrey, Peterborough, Bennington, Antrim, Hillsboro, Henniker, and Contoocook to Concord. The river drops about 130 feet in elevation in its final 20 miles, thus explaining the development of numerous water-powered mills over the past two centuries. Its major tributaries, the Warner and Blackwater Rivers, both enter from the north, about two miles apart, near the village of Contoocook.

The project was constructed in 1984 – 1986. The project is the second 坝 upstream from the Contoocook River’s confluence with the Merrimack River. The Penacook Lower Falls Project (LIHI #64) is located downstream of the project and the York 坝 (owned by the State of NH and part of the Rolfe 运河 Project (LIHI #104) as well as numerous other dams upstream including the US Army Corps of Engineers’ Hopkinton flood control dam.
The project includes a dam, 泄洪道, 发电站, tailrace, and a generating unit.

The dam is a 21‐foot high, 187-foot-long timber stoplog dam with a spillway built on the remains of an existing dam. There are 16 门 in the 187-foot-long concreted spillway, 6 operable timber gates, 9.5 feet wide and 15.5 feet high; 8 fixed timber stopgate logs, and two operable ice gates, 12 feet wide and 3.5 feet high; a powerhouse at the east side of the dam with one Allis Chalmers horizontal shaft tube turbine with a capacity of 3.02 MW; and a tailrace, 47 feet wide and 350 feet long.

The riverbanks upstream and downstream of the powerhouse are contained by concrete retaining walls to bedrock. A 15‐foot-long forebay with a 58‐foot average width begins at the powerhouse and extends upstream.

该项目采用 径流 mode and impounds an 11.4-acre reservoir. The project provides a minimum continuous flow of 338 cfs below the tailrace to mitigate impacts to fish and other aquatic wildlife. The flow regime was recommended by US Fish and Wildlife Service (USFWS) and was monitored by New Hampshire Department of Environmental Services (NHDES). The project owner provided NHDES with flow monitoring reports annually until 2016 when NHDES confirmed that the project need only report any flow deviations, of which there have been none.

Waters within the project reach are designated as Class B waters that are managed for protection and propagation of fish, shellfish, and wildlife, and for primary and secondary contact recreation. The project owner has monitored water quality in the area and tested for dissolved oxygen, water temperature, total phosphorus, and chlorophyll-a. The data collected concluded that the project is meeting water quality standards as confirmed by NHDES.

This section of the Contoocook River is scheduled for restoration of anadromous species as deemed appropriate by the US Department of the Interior. Upstream 鱼道 is facilitated by an experimental 鳗梯 installed in 2017, able to pass roughly 3,000-4,000 American eel annually. This passage measure was installed in collaboration with USFWS and New Hampshire Fish and Game (NHFG). Permanent upstream passage for other species will be constructed once a minimum of 15,000 American Shad pass upstream through the downstream Garvins Falls Project on the Merrimack River.

PLUS-标准型： The project owner voluntarily implemented upstream passage for American eel beginning in 2020, well in advance of FERC relicensing, thus satisfying optional Condition 2 below, resulting in three extra years of certification.

Downstream fish passage is facilitated by an opening in the gate bay. It releases a constant 40 cfs channeled into a 水槽 that discharges into the tailrace. A current inducer directs fish toward the passage and away from the turbine intake. Resident fish species include brown bullhead, common shiner, common sunfish, common white sucker, fallfish, largemouth bass, longnose dace, margined madtom, redbreast sunfish, and smallmouth bass. River herring are also stocked in the river by NHFG.

The project lands consist of roughly four acres located within a heavily developed area in the center of Boscawen. Surrounding lands are primarily commercially developed and one of the banks is heavily sloped and vegetated. No lands of significant ecological value exist in the project area due to its small footprint and developed location. The project owner has assisted the City of Concord in constructing a river walk and provided funds to the Penacook Downtown River Park to assist in its construction.

Threatened or endangered species potentially present in the project vicinity include the Northern long-eared bat, bald eagle, and spotted turtle. While not found within the project, the spotted turtle and bald eagle have been found within one mile. No critical habitat for the Northern long-eared bat exist in the project area. Due to the project’s urban location and small footprint, it is unlikely that any impact on listed species or their critical habitat may occur.

No cultural or historic properties exist in the project area. The project owner consults with the State Historic Preservation Office prior to any land disturbing activities or construction. No material changes have been made or are planned for the project.

No formal recreational access is provided at the project due to public safety concerns. Nearby non-project recreation opportunities are present, and the project owner contributed to the development of the Penacook Downtown River Park and scenic overlook. In areas downstream of the project, recreational access is provided free of charge where safe.

合规状态

该证书包括以下针对设施的特定条件：

条件 1： Since the Project is in relicensing and is likely to receive a new FERC license during the new LIHI Certification term, the facility Owner shall provide to LIHI as part of the annual compliance reports, a brief status summary of the FERC licensing progress listing significant agency interactions that have occurred in the past year that are relevant to any LIHI criteria, the results of any relicensing studies, and highlighting major topics of agreement or disagreement.  LIHI reserves the right to modify conditions and/or reassess Certification in light of new agency recommendations or if a new license changes Project operations or facilities related to the LIHI criteria.

Satisfied in 2020, extended term granted. 条件 2（可选）： 如果在认证期限到期前六个月内的任何时间，设施所有者在获得新的 FERC 许可之前已在项目中实施了上游鳗鱼通道，LIHI 将审查该信息并确定是否授予 PLUS 标准并将证书期限再延长三年。

2024: No material changes or compliance issues were identified. The project remains in compliance based on the annual review.  For Condition 1, the project reported that FERC issued its notice of Ready for Environmental Analysis on June 20, 2024.

2023: No material changes or compliance issues were identified. The project remains in compliance based on the annual review.  For Condition 1, the project reported filing the FERC Final License Application on November 30, 2022.

2022: No material changes or compliance issues were identified. The project remains in compliance based on the annual review.  For Condition 1, the project reported filing the FERC Draft License Application on July 15, 2022 with the final application due by November 30, 2022.

2021: There were no reported changes or compliance issues. The project remains in compliance based on the annual review.  For Condition 1, the project reported relicensing studies were in progress.

2020: There was one reported change and no reported compliance issues.  The project remains in compliance based on the annual review. For Condition 1, the project reported on relicensing status with study requests received.  For optional Condition 2, the project confirmed installation of upstream American eel passage thus satisfying the PLUS standard.

认证历史

2022 年 1 月 1 日： LIHI 证书期限已根据 2022 年 1 月 1 日发布的 LIHI 第 2 版认证手册 2.05 版延长。有关新期限，请参阅上面的设施表。

2021 年 8 月 27 日： In accordance with optional Condition 2 below, the facility implemented upstream eel passage at the Project in 2020, in advance of a new FERC license and therefore the extended term is granted.

April 15, 2020: The decision to recertify the Penacook Upper Falls Project is now final. The Certification term is from September 25, 2019 – September 24, 2024 with an option to extend the term by three years.

April 10, 2020:  LIHI sent a response letter to the appeal requestor. The letter can be found below under 2019-2020 Recertification Files.

April 3, 2020: One letter requesting an appeal of the preliminary decision were received on April 3, 2020. The letter can be found below under 2019-2020 Recertification Files.

March 5, 2020: The Low Impact Hydropower Institute has preliminarily approved Low Impact Recertification for the Penacook Upper Falls Hydroelectric Project, LIHI #52.This decision is preliminary pending the 30-day appeal window. Only those who commented on the initial application during the 60-day comment period are eligible to file an appeal. Such appeal needs to include an explanation as to how the Project does not meet the LIHI criteria. Appeal requests can be submitted by email to comments@lowimpacthydro.org with “Penacook Upper Falls Hydroelectric Project” in the subject line, or by mail addressed to the Low Impact Hydropower Institute, 329 Massachusetts Ave, Suite 6, Lexington, MA 02420. All requests will be posted to the website.  The applicant will have an opportunity to respond and any response will also be posted. 请求必须在 2020 年 4 月 4 日东部时间下午 5 点之前收到。  The full application and reviewers report are available below. If no appeal requests are received and the decision becomes final, the Certification term for the Project will be from September 25, 2019 to September 24, 2024, with the option to extend the term until September 24, 2027.

November 26, 2019: The Low Impact Hydropower Institute has received a complete application for Low Impact Recertification of the Penacook Upper Falls Hydroelectric Project.  LIHI is seeking public comment on this application.  Specifically, we are interested in knowing whether you think the Project meets the LIHI Low Impact Certification Criteria, as revised in the 2nd Edition Handbook.  Please review the program and criteria in LIHI’s revised 手册 然后查看以下项目的申请材料。与特定 LIHI 标准（流量、水质、鱼类通道等）直接相关的评论将最有帮助，但所有评论都会被考虑。评论可以通过电子邮件提交给研究所 comments@lowimpacthydro.org with “Penacook Upper Falls Project Comments” in the subject line, or by mail addressed to the Low Impact Hydropower Institute, 329 Massachusetts Avenue, Suite 6, Lexington, MA 02420.  Comments must be received on or before 5 pm Eastern time on January 25, 2020 予以考虑。所有评论都将发布到网站上，申请人将有机会作出回应。任何回应也将发布。

August 5, 2016: LIHI Executive Director, Michael J. Sale, using authority delegated from the LIHI Governing Board, has certified that the Penacook Upper Falls Hydroelectric Project (FERC No. P-6689) satisfies the LIHI Certification Criteria. A Preliminary Decision was announced on June 17, 2016, and a 30-day appeal period was open through July 17, 2016. No requests for appeal were received. This Certification Decision includes two facility-specific conditions, as follows:

  • Condition satisfied 2017. 条件 1.The facility owner shall consult with NHDES to determine the most appropriate and efficient way to report on minimum flows and pond level fluctuations, then, after reaching agreement with NHDES on best methods, complete the subject summary report on or before the end of December 2016. The owner shall provide a copy of this report to LIHI along with all related correspondence.
  • Condition satisfied 2017. 条件 2。  Within 30 days after LIHI recertification, the facility owner shall complete consultation with the NHDES to finalize the details of an alternative approach for spot testing the current water quality conditions at the facility. The owner shall provide LIHI with all related correspondence pertaining to resolution of this issue and with the water quality data once testing has been completed.  The owner shall complete the water quality testing before the end of December 2016, weather permitting.

The effective certification date for the Penacook Upper Falls Project is September 25, 2014 for a five (5) year term, which will expire on September 25, 2019.

October 30, 2015: The Low Impact Hydropower Institute has received a complete application for a new term of Low Impact Certification for the Penacook Upper Falls Hydroelectric project.  The application materials can be found in the Files section below.

April 21, 2010: The Penacook Upper Falls Hydroelectric Project has been certified as low impact for a five year term, effective September 25, 2009 and expiring September 25, 2014.

November 25, 2009: 公众评论期已结束。

September 25, 2009: Briar Hydro Associates has submitted an application for certification of the Penacook Upper Falls Hydroelectric Project. A public comment period will remain open for 60 days.

认证文件

2019-2020 Recertification

2015 年重新认证

2010年认证

重要文件