Fred S. Lubnow,, Ph.D. Princeton Hydro, LLC 256 Eagleview Boulevard PMB 309 Exton, PA PH (610) FAX (610)

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1 The Design and Installation of an Innovative Best Management Practice Structure to Reduce the Annual Phosphorus Load to a 633 acre Lake in Northeastern Pennsylvania Fred S. Lubnow,, Ph.D. Princeton Hydro, LLC 256 Eagleview Boulevard PMB 309 Exton, PA PH (610) FAX (610) flubnow@princetonhydro princetonhydro.com John A. Miller, P.E., CFM Princeton Hydro, LLC 1108 Old York Road P.O. Box 720 Ringoes, NJ, PH (908) FAX (908) jmiller@princetonhydro princetonhydro.com

2 Harveys Lake, Luzerne County Largest natural lake, by volume, entirely located within the Commonwealth. Surface area: 633 acres (256 ha) Maximum depth: 96 feet (29 m) Mean depth: 36 feet (11 m) Watershed area: 3,627 acres (1,468 ha) The lake and a portion of Harveys Creek, just below the outlet, are designated as High Quality (HQ) - cold water fishery

3 Harveys Lake, Luzerne County

4 Harveys Lake Recent History A Phase I Diagnostic / Feasibility Study was conducted on the lake in Funds were provided by PA DEP through the US EPA Clean Lakes (314) Program. The Study was designed to develop a Restoration and Management Plan to reduce the magnitude and frequency of algal blooms and protect the water quality of Harveys Lake.

5 Results of Phase I Study Based on the Phase I study, it was determined that less than 20% of the watershed is developed. However, this developed land accounts for approximately 50% and 70% of the total phosphorus and total suspended solid loads, respectively. The majority of the developed land is located immediately along the shoreline of the lake.

6 Implementation of Projects The Borough passed a local ordinance banning the use of phosphorus fertilizers. Educational material distributed to residents on a regular basis. Recently completed a number of small streambank / inlet stabilization projects immediately along the shoreline.

7 Implementation of Projects Recently completed the installation of a structural BMP to reduce the TP and TSS loads generated from a 28 acre (11.5 ha) site. Completed a fishery survey to determine the potential feasibility of using biomanipulation to improve water quality. In the process of implementing a number of innovative retrofit technologies in the stormwater infrastructure of Route 415.

8 Hemlock Gardens Section of the Watershed Hemlock Gardens is a 28 acre (11.5 ha) section of land, located in the southeastern portion of the watershed. Approximately 26 homes are located in Hemlock Gardens. The site has steep slopes (between 8 and 18%), unpaved dirt roads and no stormwater infrastructure.

9 Hemlock Gardens

10 Hemlock Gardens

11 Hemlock Gardens A Growing Greener Grant was awarded to the Borough of Harveys Lake and the Harveys Lake Environmental Advisory Council by the Pennsylvania Department of Environmental Protection. Original idea was to install an infiltration basin, however, lack of space, high depth to groundwater and low depth to bedrock required a modification on this proposed BMP.

12 Structural BMP Nutrient Separating Baffle Box Three chambered basin with screen above the static water line to collect leaf litter, grass clippings and trash. Water Polishing Unit Additional unit that provides a platform for secondary treatment. A hydrocarbon absorbing sock was first installed.

13 Structural BMP

14 Installation

15 Installation

16 Installation

17 Installation

18 Installation

19 Installation

20 Installation

21 Operation

22 Operation

23 Operation

24 Stormwater Results (TSS) Total Suspended Solids (lbs) /6/2003 8/11/2003 9//22/03 Sampling Date Entering the BMP Leaving the BMP

25 Stormwater Results (TP) Total Phosphorus (lbs) /6/2003 8/11/2003 9//22/03 Sampling Date Entering the BMP Leaving the BMP

26 TMDL Assessment Existing annual TP load for Harveys Lake is 1,019 lbs. The targeted TMDL TP load is 789 lbs. Thus, a 230 lbs reduction in the existing TP load is required. The estimated reduction in TP of the Hemlock Garden BMP is 36 lbs per year, which accounts for 16% of the required TMDL reduction.

27 Participants in Project PADEP The Borough of Harveys Lake and the Borough s s Department of Public Works The Harveys Lake Environmental Advisory Council Suntree Technologies, Inc. (Henry Happel, President) Brdaric Excavating, Inc. Wilkes University Mr. Sardoni (easement for discharge pipe) Other Contractors The residents of Hemlock Gardens