LIHI Certificate #140 – Little Falls Project, Maine

Little Falls Project, LIHI #140
Little Falls Project, LIHI #140
Little Falls Project, LIHI #140
项目名称 Little Falls
LIHI 证书编号 140
LIHI 证书期限 2017年9月5日 – 2027年9月4日
所有者 Presumpscot Hydro LLC，Relevate Power LLC 的子公司
状态 缅因州
地点 坎伯兰县温德姆和戈勒姆
River mile 16.9
普雷桑普斯科特河
装机容量 1.0 MW
平均年发电量 4,200 MWH
设施类型 径流
联邦能源管理委员会 不。 P-2941 issued in 2003, expires 09/30/2053

The Little Falls Project is located on the Presumpscot River in Cumberland County, Maine. Several mills have existed at the Little Falls site since the early 19th century. C.A. Brown and Company purchased the site in 1875 and constructed a wood board mill. Later, in the early 1900s, the Androscoggin Pulp and Paper mill purchased the property. Although Central Maine Power Company owned the power rights in the 1950s, they did not operate it. Mr. Lawrence Keddy purchased the site in the 1960s and used the power in his nearby steel mill. S.D. Warren purchased the site in 1974 (later renamed Sappi North America, Inc.). There are six hydroelectric facilities on the Presumpscot River between Sebago Lake and the Atlantic Ocean in Portland, Maine. The Little Falls project is the fifth hydro project downstream of the Sebago Lake outlet. Upstream of the project, from upstream to downstream, are the 鳗鱼堰 (LIHI #137), 北戈勒姆 (LIHI #129), 邓迪 (LIHI #138)， 和 甘博 (LIHI #139) Projects. The downstream project is 马里森瀑布 (#141).

该项目包括 坝, intake structure, 发电站, four turbines, bypass reach, and upstream eel passage. The dam is a 331-foot-long, 14- foot-high, reinforced concrete and masonry structure incorporating a 160-foot-long 泄洪道 section, a 101.5-foot-long spillway and sluice gate section, and a 70.5-foot-long intake structure. A masonry powerhouse is also integral to the dam. It contains four vertical 弗朗西斯式水轮机 direct-connected to generators with a total installed capacity of 1 MW. The bypass reach is 300 feet long, running between the dam and the powerhouse tailwaters.

The project operates in run-of-river mode and impounds a 29-acre reservoir. The project provides a minimum flow of 26 cfs into the bypass reach. The flow regime was developed based on studies conducted by Maine Department of Environmental Protection (MEDEP) to ensure suitable riverine habitat is maintained for fish and wildlife resources.

Waters within the project reach are designated Class B. This area of the Presumpscot River has historically been impaired for low dissolved oxygen levels. Monitoring conducted by MEDEP confirms that increased minimum flows at the project have achieved full attainment of dissolved oxygen standards in the downstream section of the river.

下游水坝阻止 溯河洄游鱼类 passage at the project. Agencies retain the right to prescribe passage facilities should biological triggers be met that would require passage construction. American eel passage facilities were installed in 2007 and have been updated to provide more effective access for eel passage. From September 1 through October 31, the project shuts down operations for 8 hours starting at sunset. This facilitates downstream migration of American eel. Shutdowns are coordinated with Maine Department of Marine Resources and USFWS to determine the most effective timing. Flows pass over the spillway and ensure safe migration into the bypass reach.

The project property consists of 2 acres not including the reservoir. The project’s operation and flow monitoring plan includes provisions for mitigating erosion through impoundment dewatering and re-fill procedures.

项目附近可能存在的受威胁和濒危物种包括：北长耳蝠、东部小足蝠、小棕蝠、溪浮子、小麻鳽、陆地鹬、东部箱龟、斑点龟。可能影响所列物种的活动包括：砍伐可能为蝙蝠提供栖息地的大树；在水库水位大幅长期下降期间使溪浮子贻贝暴露/脱水，由于开发导致小麻鳽、陆地鹬和斑点龟栖息地丧失或破碎，直接捕捉箱龟作为宠物。项目所有者表示，该项目不计划开展这些活动。

项目附近的文化资源包括坎伯兰和牛津 运河, the Oriental Powder Mill Complex, and an archaeological site. The project owner submits annual reports to the State Historic Preservation Office and the Penobscot Indian Nation detailing activities conducted under the project’s historic properties management plan.

Recreational resources at the project include a canoe portage trail and a carry-in boat launch.

合规状态

该证书包括以下针对设施的特定条件：

条件 1. 业主应在年度 LIHI 合规声明中向 LIHI 更新以下活动：

一个） 鳗鱼顺流通道有效性检测的现状。

b) 上游和下游溯河洄游鱼类状况 鱼道 项目和 Saccarappa 项目的活动。更新应包括机构和利益相关者咨询和建议的摘要、鱼类通道计划与 LIHI 申请中所述计划的任何变化，以及两个项目的通道要求或实施时间的任何变化。如果机构未确定项目提供安全通道且此类通道需求未被免除，LIHI 保留暂停其认证的权利。

c) 与 MIF&W 和/或 USFWS 就可能出现在该地点并受施工活动或非常规运营或维护活动影响的州或联邦列出的物种进行的任何磋商的摘要。这还包括将暴露大部分河底的蓄水池放水以及其他非常规活动。还应提供相关触发活动和年度内为保护此类物种而实施的措施的摘要。

d) The status of completion of the outstanding portage take-out/put-in or a viable alternative. A copy of FERC’s acceptance of the December 2017 request for extension of time, and FERC’s subsequent acceptance of the completed facility shall also be provided when it becomes available.

2024: No material changes or compliance issues were identified. The project remains in compliance based on the annual review.  The project filed its upstream eel passage effectiveness report. For Condition 1, the project reported no change in status.

2023: No material changes or compliance issues were identified. The project remains in compliance based on the annual review.  The project reported completion of upstream eel passage effectiveness studies in 2023. For Condition 1, the project reported no change in status.

2022: No material changes or compliance issues were identified. The project remains in compliance based on the annual review.  The project reported filing an upstream eel passage effectiveness study plan with MDMR and is awaiting comments. For Condition 1b, the project reported that MDMR conducted trap and tag testing in 2022 at the Saccarappa 鱼道 with another testing year planned for 2023. For Condition 1a, 1c and 1d, the project reported no change in status.

2021: There were no reported changes or compliance issues. The project remains in compliance based on the annual review. For Condition 1a, the project reported awaiting agency comments on effectiveness testing needs, with delays due to Covid. For Condition 1b, the project reported that removal of the Saccarappa dam and fish passage was completed. For Condition 1c, the project reported no activity. For Condition 1d, the project reported receiving another FERC extension due to ongoing hazardous waste site issues.

2020: There were no reported changes or compliance issues. The project remains in compliance based on the annual review. For Condition 1a, the project reported ongoing agency interaction with delays due to Covid. For Condition 1b, the project reported that removal of the Saccarappa dam and fish ladder installation was ongoing.  For Conditions 1c and 1d, the project reported no change in status.

2019: There were no reported changes or compliance issues.  The project remains in compliance based on the annual review. For Condition 1a, the project reported a planned agency meeting for the study. For Condition 1b, the project reported  that removal of the Saccarappa dam had begun. For Conditions 1c and 1d, the project reported no change in status.

2018: There were no reported changes or compliance issues.  The project remains in compliance based on the annual review. For Condition 1a, the project reported no change in status. For Condition 1b, the project reported filing with FERC of the Saccarapa project license surrender application. For Condition 1c, the project reported no change in status. For Condition 1d, the project reported requesting an extension to complete the portage due to proximity of a hazardous waste site.

 

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。

2018 年 3 月 5 日 – The 30-day appeal window closed for the preliminary certification decision of the Little Falls Hydroelectric Project closed on March 1, 2018 with no appeals to the decision received. The decision is therefore final and Little Falls is LIHI Certificate #140. The Certification term will be September 5, 2017 – September 4, 2022.

2018 年 1 月 30 日 – On January 24, 2018, the Low Impact Hydropower Institute (LIHI) preliminarily approved Low Impact Certification for the Little Falls project. This decision is preliminary pending the 30-day appeal window. Only those who commented in the initial application 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 to comments@lowimpacthydro.org. 请求必须在 2018 年 3 月 1 日东部时间下午 5:00 之前收到。

2017 年 9 月 7 日 – On September 7, 2017, the Low Impact Hydropower Institute (LIHI) received a complete application from S.D. Warren Company d/b/a Sappi North America for the Low Impact Certification of the Little Falls Project, FERC No. P-2941.

LIHI is seeking comment on the Little Falls application for certification. Comments that are directly tied to specific LIHI criteria (flows, water quality, fish passage, etc.) will be most helpful, but all comments will be considered.  Comments may be submitted to the Institute by e-mail at comments@lowimpacthydro.org with “Little Falls Project Comments” in the subject line, or by mail addressed to the Low Impact Hydropower Institute, 329 Massachusetts Avenue, Suite 2, Lexington, MA 02420.  评论必须在 2017 年 11 月 7 日东部时间下午 5 点或之前送达研究所 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。

认证文件

2017 年认证

重要文件