State of Utah Clean Lakes Program Diagnostic/Feasibility Study Pelican Lake t September 1999 ------- State of Utah Clean Lakes Program Diagnostic/Feasibility Study Pelican Lake David Wham Utah Division of Water Quality EPA Clean Lakes Grant # CL998213-01 U.S.EPA REGION 8 Technical Library 80C-L 999 18th Street, Suite 500 Denver, CO 80202 Utah Department of Environmental Quality Division of Water Quality Salt Lake City, Utah September 1999 ------- ACKNOWLEDGMENTS The Pelican Lake Diagnostic/Feasibility Study by the Department of Environmental Quality, Division of Water Quality is a product of technical assistance and support of a large number of people not all of whom are mentioned here. We would like to thank members of the Pelican Lake Technical Committee for their support, input, and assistance on the project. Their knowledge of the lake and its surrounding area was crucial to development of the study. Appreciation is extended to the Division of Water Quality Monitoring Section staff for their assistance in conducting the water quality monitoring, and providing field information for the study. Special recognition is given to Ed Johnson and Chad Crosby of the Utah Division of Wildlife Resources for conducting a through fisheries study for this report. Also for their efforts in planning and implementing the study. The success of the project is largely due to their efforts. We recognize and appreciate the interest and support of David Rathke (project officer for EPA Region VIII) on the project. Finally, we appreciate the financial support received for the project from the Environmental Protection Agency and the Utah Community Impact Board ------- TABLE OF CONTENTS List of Figures iii List of Tables iv Executive Summary v Chapter 1: Introduction and Background Information 1-1 Introduction 1-1 Physical Description and Morphometry of Lake 1-2 Location 1-3 Water Quality Standards 1-3 Public Access and Public Uses 1-5 Population 1-6 Watershed Description 1-7 Land Ownership 1-7 Topography/Geology 1-8 Land Use 1-9 Soils 1-9 Basin Hydrology 1-9 Point Sources 1-11 Non-point Sources 1-11 Septic Tanks 1-12 Agriculture 1-12 Streambank Erosion 1-12 Chapter 2: Water Quality Monitoring 2-1 Monitoring Sites 2-1 Lake Sampling 2-2 Stream Sampling 2-4 Chapter 3: Water Quality Evaluations - Stream 3-1 Metals 3-1 Chemistry 3-1 Nutrients 3-5 Nutrient Loading 3-8 Chapter 4: Water Quality Evaluations - Lake 4-1 Historical Water Quality Data 4-1 Reservoir Profiles 4-2 Metals 4-9 Chemical Evaluation 4-10 Nutrients 4-11 Trophic Level Evaluation 4-12 Chapter 5: Biological Evaluations 5-1 i ------- Fisheries 5-1 Gill Netting 5-1 Winter Mortality 5-2 Spawning Success 5-2 Creel Census 5-3 Piscivorus Birds 5-3 Fish Tissue Analysis 5-4 Phytoplankton 5-4 Macrophytes 5-6 Chapter 6: Recreation/Socio-Economic Impact 6-1 Chapter 7: Public Participation 7-1 Chapter 8: Quality Assurance/Quality Control 8-1 Chapter 9: Restoration Feasibility and Alternatives 9-1 Lake Management Alternatives 9-1 Possible Macrophyte Controls 9-1 Dredging 9-2 Mechanical Weed Harvesting 9-3 Grass Carp 9-3 Chemical Treatment of Sediments and Herbicides 9-3 Hydrologic Control Measures 9-4 Watershed Management Alternatives 9-4 References 10-1 Appendix A - Lake Profile Data Appendix B - Lake Water Quality Sampling Data Appendix C - Stream Water Quality Sampling Data Appendix D - Fisheries Report Appendix E - Phytoplankton Report Appendix F - Quality Control/Quality Assurance ii ------- LIST OF FIGURES 1-1 Location Map 1-1 1-2 Land Ownership 1-8 1-3 Land Use- Pelican Lake Watershed 1-10 2-1 Location of Lake and Watershed Water Quality Sampling Stations 2-3 3-1 Mean TSS Concentrations at Three Sites on Ouray Park Canal 3-5 3-2 Relationship Between Mean TSS and Total Phosphorus Values 3-7 3-3 Regression Analysis of TSS Against Total Phosphorus 3-6 3-4 Mean Nutrient Loads and Concentrations on Ouray Park Canal 3-9 4-1 Pelican Lake Temperature and DO Profiles 4-3 4-2 TSI Values West Midlake Station 4-13 5-1 Catch Rate per unit effort for Summer Trend Netting 5-2 5-2 Bluegill Gill Net Numbers vs Annual Precipitation 5-3 5-3 Percent of ISI of the Major Species of Phytoplankton in Pelican Lake Samples 5-8 5-4 Percent of ISI index Comprised by the Major Groups of Phytoplankton 5-8 iii ------- LIST OF TABLES 1-1 Water Quality Criteria for Pelican Lake 1-4 1-2 Distance of Major Population Centers from Pelican Lake 1-6 1-3 Population Estimates: 1990 and 1998 1-7 2-1 Lake Parameters Analyzed 2-2 2-2 Water Column Location of Samples 2-4 2-3 Watershed Parameters Measured 2-5 3-1 Metals Values for Pelican Lake Stream Samples 3-2 3-2 Mean Stream Chemistry Values for Pelican Lake Samples 3-3 3-3 Mean Stream Nutrients and Chemistry 3-4 3-4 Mean Loads and Concentrations of Selected Parameters for Stream Sites 3-8 4-1 Metal Values for Pelican Lake Samples 4-9 4-2 Chemical Analysis Data Summary of Pelican Lake Samples 4-10 4-3 Mean Nutrient Values for Pelican Lake Samples 4-12 4-4 Mean TSI Values for Pelican Lake Samples 4-14 5-1 Relative Densities of Phytoplankton Taxa from Pelican Lake Samples 5-7 5-2 List of Pelican Lake Phytoplankton Species 5-2 9-1 Comparison of Management Techniques for Control of Nuisance Aquatic Weeds ... 9-1 iv ------- EXECUTIVE SUMMARY An EPA Clean Lakes Program Study, Phase 1 - Diagnostic/Feasibility Report for Pelican Lake is ¦ documented in this report. The study included water quality and biological monitoring, analysis, and data assessment, and the development of alternatives to deal with identified problems. Pelican Lake is a small warm water storage reservoir located in southwestern Uintah County, approximately 19 miles south-southeast of Vernal, Utah. The lake has a maximum surface area of 1680 acres of surface area and is 1.96 miles in length and 1.13 miles in width. The average depth is 9 feet. The lake is primarily used for agricultural irrigation, boating, fishing, non-contact recreation, and hunting. Pelican Lake is a high recreational and agricultural use facility. Low water levels going into winter appear to be the trigger for winter fish kills and the cause for the collapse of the fishery in Pelican Lake. The factors that contribute to this process the shallow nature of the lake, an adequate nutrient supply, abundant macrophyte growth (with subsequent die-off and decay under winter ice), and little or no water inflow during the critical late fall/winter period. In general, evaluation of data collected during the study period showed favorable water quality conditions. However, a significant potential for a repeated collapse of the fishery exists during future drought cycles. Recommended management activities include the following: • The conservation pool at Pelican Lake has been reduced through sedimentation, compounding the dissolved oxygen problem by reducing the overall lake volume. A bathymetric survey needs to be conducted to determine any compromise in the conservation pool. If the lake volume has been reduced, dredging may be necessary to recover the full conservation pool. v ------- Carefully investigate the use of grass carp in Pelican Lake for the biological control of macrophytes. Following completion of a lake bathymetric survey, a survey should be completed to determine the DWR conservation pool elevation, and a staff gauge installed. In this way the conservation pool elevation can be monitored to insure that the water stays in the lake. This is critical to the to the winter survival of the fishery and to protect the water right investment. A staff gauge would also aid the local water users in monitoring their available water. At present, there is no way to accurately determine if the lake is at the conservation pool. The timing of water delivery is also important to the winter survival of the fishery. If the lake can be filled in the late fall or winter it would mitigate many of the problems. In low water years, water has simply not been available to put into Pelican Lake in the fall. The purchase or exchange of additional water rights would greatly benefit the Pelican Lake fishery. A cooperative approach with local land owners, lake users, the Ouray Park Irrigation Company and state and federal resource management agencies should be undertaken to address sources of sediment and nutrient loading in the watershed. In-stream erosion of the canal bed and banks could be addressed by implementing bank stabilization treatments and riparian buffer zones in critical areas. Application of agricultural best management practices are recommended to reduce erosion, sedimentation and nutrient loading from the watershed. vi ------- CHAPTER 1: INTRODUCTION AND BACKGROUND INFORMATION Introduction Pelican Lake is a small warm water storage reservoir located in southwestern Uintah County, approximately 19 miles south-southeast of Vernal, Utah (Figurel-1). The lake has a maximum surface area of 1680 acres of surface area and is 1.96 miles in length and 1.13 miles in width. The average depth is 9 feet. The lake is primarily used for agricultural irrigation, fishing, non- contact recreation, and hunting. Pelican Lake is a high recreational and agricultural use facility. This area is popular to people throughout the state and is also visited by a significant number of individuals from adjacent States. Lake Figure 1-1. Location Map 1-1 ------- Pelican Lake has one major inflow, the Ouray Park Canal. The canal diverts water to the lake from the Uintah River. Pelican Lake is privately operated by the Ouray Park Irrigation Company. Prior to 1967, the lake was used primarily for irrigation and stock watering. Between 1954 and 1966 Utah DWR personnel reported that Pelican Lake was not being used extensively for fishing, probably because most of the shoreline was inaccessible to anglers, no boat launching facilities were present, and objectionable odors were produced in the summer months by decaying aquatic vegetation due to excessive drawdown of the lake for irrigation needs (Burdick, 1979). In 1967, the UDWR purchased a conservation pool of 5,500 acre-feet from the irrigation company that expanded the lake and raised the previous maximum water level of 2.44 m to over 4.9 m (Burdick 1979). In the 1970's Pelican Lake was recognized as a world-class trophy bluegill fishery. The DWR reported that it was common for anglers to catch their limit of half- pound bluegills. Burdick (1979) estimated an annual harvest of 22,469 to 58,277 bluegill from 1975 to 1977. Populations of bluegills and largemouth bass began to decline in the early 1980's and by 1990, no bluegills were captured by the DWR during summer trend netting. In 1993 UDWR approached the Division of Water Quality (DWQ) with concerns over the decline in the fishery and the possibility that impaired water quality was playing a role. In 1994 a federal EPA Clean Lakes Program grant was received by DWQ to conduct a lake diagnostic and feasibility study. UDWR received a matching grant of $43,000 from the Utah State Division of Community Development. Field work for the project began on December 1, 1994 and ended November 30, 1996. Physical Description and Morphometry of Lake Elevation 1,462 m (4797 ft.) 680 ha (1,680 acres) 20,895,0006 m3 (17,072 acre-feet) Maximum Surface Area Maximum Volume 1-2 ------- Mean Depth Maximum Depth Length Width Shoreline Length Major Inflows Outlet 3 m (9.84 ft.) 5.5 m (18.1 ft.) 3.17 km (1.06 miles) I.83 km (1.13 miles) II.9 km (7.4 miles) Ouray Park Canal Irrigation pump stations, Ouray National Bird Refuge pipeline Location Location: Latitude Longitude Township Range Sections Major Hydrologic Basin USGS Cataloging Unit Stream Watershed USGS Map and Date Uintah County 40° ii' 42" 109° 40' 52" 7S 20E 19,20,21,28,29 Green River Lower Green River(# 14060001 Lake Canal Pelican Lake, Utah 1964 Water Quality Standards The designated uses pertaining to Pelican Lake (UAC R317-2, Standards of Quality for Waters of the State) are as follows: Class 2B Protected for secondary contact recreation such as boating, wading or similar uses. 1-3 ------- Class 3B Protected for warm water species of game fish and other warm water aquatic life, including the necessary aquatic organisms in their food chain. Class 4 Protected for agricultural uses including irrigation of crops and stock watering. A summary of the numeric water quality criteria associated with each of these classifications are given in Table 1-1. Table 1-1. Water Quality Criteria for Pelican Lake1 PARAMETER 2B 3C 4 Physical Minimum Dissolved Oxygen (mg/1)2 30 day average — 5.5 — 7 day average — 6.0/4.0 — 1 day average — 5.0/3.0 — pH (units) 6.5-9.0 6.5-9.0 6.5-9.0 Temperature (deg. C) 27 — Pollution Indicators Nitrate as N (mg/1) 4 4 — Total Phosphorus as P (mg/1) 0.025 0.025 — BOD (mg/1) 5 5 5 1-4 ------- PARAMETER 2B 3C 4 Metals (us/I)3 Aluminum — 87/750 — Arsenic — 190/360 0.1 Barium — — — Cadmium — 1.1/3.9 0.01 Chromium(T rivalent) — 210/1700 0.01 Copper — 12/18 0.2 Lead — 3.2/82 0.1 Mercury — 0.012/2.4 — Selenium — 5.0/20 0.05 Silver — 4.1 — Zinc — 110/120 — Inorganic Total Dissolved Solids (mg/1) Total Suspended Solids (mg/1) 90 90 1200 ' This is only a partial list of parameters. Refer to UAC R317-2 for a complete listing. These limits are not applicable to lower water levels in deep impoundments. First number in column is for when early life stages are present, second number is for when all other life stages present. 3 Metals limits are dissolved 4-day average/1-hour average based on a hardness of 200 mg/1 CaC03. Public Access and Public Uses The lake shoreline is 50% publicly owned and administered by BLM with unrestricted accessibility. Pelican Lake is accessible to motorists via U-88 between Ouray and US-40. The turnoff to U-88 is 13 miles west of Vernal and 14 miles east of Roosevelt on US-40. Present lake uses include the following: 1. Recreation (motorized and non-motorized boating, fishing, hunting, camping, bird 1-5 ------- watching and wading). 2. Water storage for irrigation and stock watering use. 3. Wetlands for birds and aquatic animals. 4. Waterfowl habitat and refuge. Table 1-2 Distance of Major Population Centers from Pelican Lake City Via Distance (miles) Vernal US-40, U-88 23 Roosevelt US-40, U-88 24 Duchesne US-40, U-88 51 Salt Lake City 1-80, US-40, U-88 172 Fishing, boating, and hunting are popular activities at the lake. There is a Bureau of Land Management (BLM) camping area on the south side of the lake which will accommodate approximately 18 units and provides a concrete boat ramp and restroom facilities. Facilities are limited at the lake but can be found in nearby Roosevelt or Vernal. A convenience store and cafe are located on the highway just to the northeast of the lake. Population The populations of cities near Pelican Lake in Uintah and Duchesne Counties are shown in Table 1-3. The cities of Duchesne and Vernal, the two major population centers in their respective counties, are located within 25 miles of the Lake. 1-6 ------- Table 1-3 Population Estimates: 1990 and 1998 1990 1998 Duchesne County 12,645 14,481 Altamont 167 196 Duchesne 1,308 1,493 Myton 468 524 Roosevelt 3,915 4,314 Tabiona 120 138 Balance of Duchesne Co. 6,667 7,816 Uintah County 22,211 25,660 Ballard 644 784 Naples 1,334 1,517 Vernal 6,640 7,366 Balance of Uintah Co. 13,593 15,993 Source U S Bureau of the Census, Population Estimates Program Watershed Description Land Ownership Figure 1-2 shows that a large part of the lands within the Pelican Lake watershed are privately owned. The remaining land in the watershed is under the administration of the BLM. 1-7 ------- Figure 1-2. Land Ownership Land Ownership Pelican Lake N A T opography/Geology Pelican Lake has a small natural watershed consisting of Ouray Park, a flat agricultural area north of the lake. The park is bounded by gentle slopes that rise several hundred feet to become rolling hills. Landforms include low terraces, fans and desert valley plains. The lake's watershed BLM ¦i PRIVATE WATER 1-9 ------- 18,240 ac of 6 to 8 inches of precipitation every year. The watershed high point is 4,963 feet above sea level, thereby developing a 1.2% complex down slope to Pelican Lake. The average decrease in river mile elevation is 79.5 ft./mile. The frost-free season extends from 100 to 120 days per year. Irrigated farmland, shadscale, greasewood and sagebrush-grass make up the principal vegetation communities. Land Use Land use in the watershed is primarily irrigated agriculture, with some grazing land. Figure 1-3 depicts land use patterns in the basin. Soils Percent composition and description of principal subgroup soil associations represented in the watershed include the following: Percent Description 100% Typic Calciorthids-typic Torriorthents Association contains moderately to strongly alkaline, silt loams, sandy clay loams, loamy fine sands, very fine sandy loams, and gravelly sand loams which have low to high erodibility (K= .17 to .49) and well to somewhat excessive drainage. Permeability is slow to rapid. Runoff is slow to medium and sediment production is moderate to low. The hydrologic groups are mainly B, C, and D. Basin Hydrology Pelican Lake has one major inflow, the Ouray Park Canal. The canal diverts water from the Uintah River. The canal flows into Bullock Reservoir, then into Cottonwood Reservior. Water 1-9 ------- Figure 1-3. Land Use Land Use Legend Alfalfa Builds/Homes Fruit Grain Idle Low Density NA Pasture Reservoir Riparian Trans/Utilities Unknown agriculture conifer deciduous grain sage grassland scrub ------- then returns to the Ouray Park Canal and is transported to Pelican Lake. A secondary source of water is diverted from the Whiterocks River via a network of canals into Brough Reservior. Water can be release into the Ouray Park Canal. Withdrawals are made from the lake via pump stations used for agricultural irrigation. In addition, a gravity pipeline was installed in 1995 to provide water to the Ouray National Bird Refuge in an effort to mitigate selenium problems at the refuge. U.S. Fish and Wildlife Service (USFWS) personnel have indicated that the bottom of the USFWS outlet pipe is located at the elevation of the Utah Division of Wildlife Resources- owned conservation pool at 4,794.25 feet. In 1967, the UDWR purchased a conservation pool of 5,500 acre-feet from the irrigation company that expanded the lake and raised the previous maximum water level of 2.44 m to over 4.9 m (Burdick 1979). Water levels in the lake fluctuate at full or near full capacity in the spring, followed by water drawdown during the summer for irrigation, and rise in the fall/winter with subsequent early spring filling. Midwinter filling had been problematic due to the formation of ice dams and subsequent flooding. Point Sources There are no known point sources of pollution that discharge into Pelican Lake or its tributary waters. Non-point Sources Approximately 50 percent of the lake shoreline is administered by the BLM for multipurpose use. Managed recreational use and cattle grazing on these lands are potential, but limited sources of nonpoint source pollution. 1-11 ------- Septic tanks Homes in the Pelican Lake drainage use septic tanks/absorption field systems. These are widely dispersed and most are away from the lakeshore or drainages feeding the lake. Impacts from septic tanks are judged to have a negligible impact on the lake. Agriculture Land use in the watershed is primarily agricultural. Runoff from agricultural lands could be a possible source of pollutants to Pelican Lake. Farms in the basin use sprinkler irrigation which results in minimizing irrigation return flow to area drainages. There are several cattle feed lots on the north and south shores of the lake which may also contribute to nutrient loading and sedimentation in the lake. Streambank Erosion The Ouray Park Canal is down-cutting and exhibits channel bank erosion, providing a source of pollutants (nutrients and sediment) to the lake. 1-12 ------- CHAPTER 2: WATER QUALITY MONITORING Monitoring Sites Figure 2-1 shows the location of all monitoring sites in the watershed and on the lake. The STORET numbers on the map correspond to the STORET numbers listed below. Lake Sites Site Location STORET # 1 Pelican Lake west midlake 01 493713 2 Pelican Lake in east bay 02 493714 3 Pelican Lake in southeast bay 03 493716 4 Pelican Lake near west bay inlet 04 493715 Watershed Sites Site Location STORET # 1 Ouray Park Canal above Pelican Lake at County Road 493712 2 Ouray Park Canal above Pelican Lake at U.S. Highway 40 493708 3 Outlet from Cottonwood Reservoir (Ouray Park Canal) 493709 4 Brough Reservoir Spillway 593241 Sampling was conducted by experienced personnel from the Division of Water Quality. A Hydrolab was used to measure temperature, pH, dissolved oxygen, and conductivity. A secchi disk was used to determine lake transparency. Canal flow rates were calculated by using standard stream transects with depths and velocities for open channels. Dissolved nutrients and metals 2-1 ------- were field filtered with a peristaltic pump through a 0.45u membrane filter. Chlorophyll-a samples were frozen immediately after filtration and kept frozen for transfer to a freezer at the laboratory upon return from the trip. All samples were collected, refrigerated and transported according to accepted procedures to the Utah State Department of Health Laboratory in Salt Lake City for analysis. Lake Sampling Monitoring began in May, 1995. Lake stations where sampled approximately bi-weekly during spring and summer months (May through September). The lake was sampled monthly during October, November, January, February and April. Early and late winter sampling schedule was dependent upon safe ice conditions and was shifted accordingly. Table 2-1. Lake Parameters Analyzed Field Nutrients Metals (Dissolved) Chemistry Biological Temperature Total P04 Arsenic Alkalinity Chlorophyll-a Sp. Conductivity Total Filterable P04 Cadmium Volatile TSS Macrophyte diversity Dissolved Oxygen T.K.N. Copper Residual TSS Phytoplankton Secchi Depth d-no2 + no3 Lead Calcium pH Ammonia as N Mercury Potassium Silver Total Hardness Manganese Magnesium Barium Silica Chromium Sodium Iron Chloride Selenium Sulfate Aluminum Zinc At each sampling station, samples were collected from three depths: just off the bottom, at mid- depth, and just below the surface. Table 2-2 shows the location in the water column where each group of samples were collected. 2-2 ------- Figure 2-1. Location of Lake and Watershed Water Quality Sampling Stations 2-4 ------- Table 2-2. Water Column Location of Samples SAMPLE SITE (Depth) PARAMETER Surface Mid-Depth Bottom Chlorophyll-a All Stations Nutrient Samples All Stations All Stations All Stations Chemistry Samples All Stations Stations 1 & 4 (tot. hardness only) Metals Samples Stations 1 & 4 Phytoplankton All Stations. Water Column Sample from surface to 3 times secchi depth. All samples were collected using a Van Dorn sampling device except phytoplankton samples. For phytoplankton, Water column samples were collected from three times secchi depth to the surface. Stream Sampling Pelican Lake has one major inflow, the Ouray Park Canal. The canal diverts water from the Uintah River. For the purposes of this study, only the canal water was sampled and analyzed. Inflows were monitored by grab sample at the same time the lake was monitored. Nutrient and chemical analyses at these sites reflect the same strategy as used on the lake. Each station was sampled bi-weekly from March, 1995 through September 1996 during runoff and the productive cycle in the lake. During the remainder of the year sampling was conducted monthly. Samples were analyzed for metals quarterly. Table 2-3 list the parameters measured at stream sites. 2-4 ------- Table 2-3 Watershed Parameters Measured Field Nutrients Metals (dissolved) Chemistry Biological Temperature Total P04 Arsenic Alkalinity None Sp. Conductivity Total Filterable P04 Cadmium Volatile TSS Dissolved Oxygen T.K.N. Copper Residual TSS pH N02 + N03 Lead Calcium Flow Ammonia as N Mercury Potassium Silver Total Hardness Manganese Magnesium Barium Silica Chromium Sodium Iron Chloride Selenium Sulfate Aluminum TDS Zinc 2-5 ------- CHAPTER 3: WATER QUALITY EVALUATIONS ¦ STREAM Water sample collection was performed at four locations in the Pelican Lake Watershed from February 1995 to June 1996. Those sites included three locations on the Ouray Park Canal, and one site at the outlet of Brough Reservoir. Stream and reservoir sampling were usually performed on the same trip, usually the same day. The purpose of the sampling was to develop data necessary to evaluate water quality and particularly to determine nutrient concentrations and loadings. Water quality samples collected in the field were analyzed in the laboratory and the results were compared against the state water quality classifications and standards for metals, physical and chemical parameters and nutrient concentrations. Monitoring sites are shown in Figure 2-1 . Metals A metals analysis on the water samples from each of the stream stations was conducted for aluminum, arsenic, barium, cadmium, chromium, copper, iron, lead, manganese, mercury, selenium, silver, and zinc. The results of these analyses are shown in Table 3-1. The complete data set is contained in Appendix C. None of the metals were found in concentration exceeding the state water quality standards for designated uses. The majority of the samples analyzed showed metal concentrations below detection limits. Chemistry Chemical analyses were performed to determine Total Volatile Solids, Residual Suspended Solids (RSS), Total Suspended Solids, Calcium, Magnesium, Potassium, Sodium, Chloride, Sulfate, Total Alkalinity, Total Hardness, and Total Dissolved Solids (TDS). Specific Conductance and pH were determined in the field. A summary of the results of these analyses is shown in Table 3-2 and Table 3-3. The complete data set is contained in Appendix C. 3-1 ------- Table 3-1. Metals Values for Pelican Lake Stream Samples STORET No Date MMDDYY D-As uq/l D-Ba D-Cd D-Cr D-Cu D-Fe D-Pb D-Mn D-Se D-Ag D-Zn uq/l uq/l uq/l uq/l ug/l uq/l ug/l uq/l ug/l ug/l 97 <1.0 <5.0 <12.0 38 4 6 <1.0 <2.0 <30.0 96 <1.0 <5.0 <12.0 47 <3.0 <5.0 <1.0 <2.0 <30.0 97 <1.0 <5.0 <12.0 64 <3.0 <5.0 <1.0 <2.0 <30.0 110 <1.0 <5.0 <12.0 47 <3.0 <5.0 <1.0 <2.0 <30.0 110 <1.0 <5.0 <12.0 40 <3.0 7.6 <1.0 <2.0 <30.0 109 <1.0 <5.0 <12.0 <20.0 <3.0 <5.0 <1.0 <2.0 <30.0 97 <1.0 <5.0 <12.0 28 <3.0 5.8 <1.0 <2.0 <30.0 95 <1.0 <5.0 <12.0 <20.0 <3.0 <5.0 <1.0 <2.0 <30.0 110 <1.0 <5.0 <12.0 25 3 5.7 <1.0 <2.0 <30.0 110 <1.0 <5.0 <12.0 26 <3.0 18 <1.0 <2.0 <30.0 106 <1.0 <5.0 <12.0 <20.0 <3.0 <5.0 <1.0 <2.0 <30.0 95 <1.0 <5.0 <12.0 38 <3.0 <5.0 <1.0 <2.0 <30.0 100 <1.0 <5.0 <12.0 54 <3.0 <5.0 <1.0 <2.0 <30.0 110 <1.0 <5.0 <12.0 36 <3.0 5.1 <1.0 <2.0 <30.0 110 <1.0 <5.0 <12.0 <20.0 <3.0 <5.0 <1.0 <2.0 <30.0 102 <1.0 <5.0 <12.0 <20.0 <3.0 24.4 2 <2.0 <30.0 108 <1.0 <5.0 <12.0 <20.0 <3.0 <5.0 <1.0 <2.0 <30.0 D-AI uq/l 36 D-Hg _ug/l_ <0.2 493708 493708 493708 493708 493708 493708 493709 493709 493709 493709 493709 493712 493712 493712 493712 493712 593241 2/9/1995 3/15/1995 7/19/1995 10/25/1995 2/7/1996 5/1/1996 2/9/1995 3/15/1995 10/25/1995 2/6/1996 5/1/1996 2/8/1995 7/19/1995 10/25/1995 2/7/1996 5/1/1996 5/1/1996 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 47 50 33 36 <30.0 <30.0 <30.0 30 <30.0 <30.0 50 47 35 <30.0 <30.0 <30.0 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 3-2 ------- Table 3-2. Mean Stream Chemistry Values for Pelican Lake Samples STORET Temp PH D.O. Sp.Cond. T.Sus.Sol D-Calclum D-Magnesum D-Potassum D-Sodium Chloride Sulfate Tot. Alk. No Dea C ma/l umhos/cm ma/l ma/l ma/l mq/l ma/l mq/l mq/l ma/l 493708 Mean 10.80 8.41 9.12 477.95 47.91 44.32 24.73 2.12 21.26 7.13 85.10 160.20 Min 0.13 7.8 7.1 346 2 37 15 1.2 9 2 0.95 50.602 115 Max 22 8.6 11.6 681 132 54 37 3.36 46 2 16.5 150.9 216 Stan. Dev. 6.164 0.173 1.315 108.055 27.833 5.483 5.987 0.489 8.311 3.662 25.868 29 598 N 20 20 20 20 20 20 20 20 20 20 20 20 493709 Mean 9.89 8.30 8.99 428.30 7.45 43.27 22.14 1.88 15.05 5.54 73.12 149.15 Min 2.4 7.6 6.2 330 2 36 15 1.2 8.4 0.8 50.502 118 Max 19 8.54 11.3 530 19 51.3 28 2.4 23 17 5 98.1 177 Stan. Dev. 4.727 0.232 1.250 65.333 4.473 4.257 3.908 0.350 3.681 3.287 14.766 21.448 Mean 20 20 20 20 20 20 20 20 20 20 20 20 493712 Mean 11.16 8.19 9.62 626.14 101.97 46.12 29.39 2.45 43.50 22.90 112.00 186.55 Min 0 3.4 7.5 316 10 35 14 1.3 10 0.25 47.154 110 Max 23 8.9 11.7 2417 314 69 58.2 5 225 252.5 304.5 318 Stan. Dev. 6.411 1.121 1.241 456.443 81.840 9.157 12.112 0.900 48.842 54 792 66.370 61.552 N 21 21 21 21 21 20 20 20 20 20 20 20 593241 Mean 11.16 8.565 9.0975 275.25 4.8 27.75 10.81 1 8.5475 2.65 43.6115 88.25 Min 8 8.3 7.7 209 2 24 8.8 05 6.8 0.1 30.446 72 Max 15.4 8.8 10.85 311 13.2 31.5 12.7 1.3 9.6 4 50.5 97 Stan Dev. 3.169 0.205 1.450 45 624 5.600 3 283 1.928 0.356 1 308 1.748 9.192 11.815 N 4 4 4 4 4 4 4 4 4 4 4 4 3-3 ------- Table 3-3. Mean Stream Nutrients and Chemistry STORET T.K.N. Ammonia N Bicarbnate Carb. Diox T. Phos. TDS @ 180C T Vol Sol RSS D-N02+N03 D-T Phos. NO 493708 Mean Min Max Stan. Dev. N ma/i 0.46 0.1 0.98 0.246 18 mq/i 0.05 0.025 0.16 0.041 20 211.50 140 264 38 799 12 1.33 1 2 0.492 12 0.04 0.005 0.096 0.023 20 299.40 194 468 69.579 20 5.67 0 14 3.195 18 43.39 4 118 26 982 18 0.10 0.01 08 0.177 20 0.01 0.005 0.05 0.011 20 493709 Mean Min Max Stan. Dev. Mean 0.35 0 05 0.87 0.193 18 0.04 0.025 0.136 0.029 20 195.33 144 216 26.085 12 1.42 1 3 0.669 12 0.02 0.005 0 06 0.013 20 267.70 200 350 41.616 20 2.50 0 8 2.425 18 5.31 1.5 13 3.824 18 0.11 0.01 0.74 0.169 20 0.01 0.005 0.04 0.008 20 493712 Mean Min Max Stan. Dev. N 0.79 0.2 3.107 0.651 18 0.05 0.025 0.152 0.041 21 254.00 134 388 86.183 12 1.75 1 4 0 866 12 0.08 0.005 0.304 0.068 21 378.38 190 1208 226.042 21 9.21 0 30 7.705 19 90.11 10 288 77.170 19 0.22 0.01 1.35 0.304 20 0.01 0.005 0.04 0.010 20 593241 Mean Min Max Stan. Dev. N 0.10 0 1 0.1 NA 1 0.03 0.025 0.025 0.000 4 114.00 106 118 6.928 3 1.00 1 1 0.000 3 0.05 0.005 0.17 0.081 4 161.00 126 180 24.576 4 2.00 2 2 NA 1 NA NA NA NA NA 0.01 0.01 0.01 0.000 4 0.01 0.005 0.01 0.003 4 3-4 ------- The mean concentrations for these parameters are all within state water quality standards. The lowest station sampled, Ouray Park Canal above Pelican Lake at the county road crossing (STORET # 493712), exceeds the state's pollution indicator value (90 mg/1) for total suspended solids (TSS) with a mean concentration of 102 mg/1. TSS values at this station exceeded the pollution indicator value in 43% of the samples. High residual suspended solids (RSS) and low total volatile solids (TVS) values for the same samples suggest that the source of TSS is sediment and not organic material. Figure 3-1 illustrates how of TSS concentrations clearly increase as the flow moves downstream from the Cottonwood Reservoir outlet toward Pelican Lake. The Ouray Park Canal is down-cutting and eroding its channel through this stream section. This erosion is the likely cause of the suspended material. Figure 3-1. Mean Total Suspended Solids Concentrations at Three Sites on Ouray Park Canal.. 120 -t 493709 493708 493712 Storet # Nutrients Water quality data showing mean nutrient concentrations in the watershed are shown in Table 3- 3. The complete data set is contained in Appendix C. Phosphorus and nitrogen are the primary 3-5 ------- parameters of concern in the lake because these nutrients largely control productivity and eutrophication processes in the lake. Mean total phosphorus levels increase downstream from a low of 0.02 mg/1 at the Cottonwood Reservoir spillway, to 0.04 mg/1 where the canal crosses Highway 40, and finally, to 0.08 mg/1 just above the lake. The mean total phosphorus level at the lower station exceeds the state pollution indicator value of 0.05 mg/1. Total dissolved phosphorus levels however, remain low and constant throughout the reach at a mean level of 0 .01 mg/1. These results, coupled with the previous findings concerning TSS indicate that a significant fraction of the total phosphorus in the stream is associated with sediment (Figure 3-2). A regression analysis of total phosphorus against TSS showed good correlation (r = 0.87) yielding an r2 value of 0.76 (Figure 3-3). Figure 3-3. Regression Analysis of TSS Against Total Phosphorous As previously indicated, nitrogen values were well below the state's water quality standards and pollution indicator values. N02 +N03 concentrations stayed fairly constant between the upper and middle Ouray Park Canal stations at approximately 0.1 mg/1, then doubled to approximately 0.2 mg/1 at the lower station just above Pelican Lake. Ammonia levels remained fairly constant 3-6 ------- at around 0.05 mg/1 across all three stations. Nutrient levels from the Brough Reservoir outlet site were generally well below those found in the Ouray Park Canal. Overall, stream water quality data indicate that stream water quality is acceptable for irrigation, fish, wildlife and recreational uses based on its general chemistry. However, the waters would certainly benefit from reduced sediment and phosphorus concentrations. Figure 3-2. Relationship Between Mean TSS and Total Phosphorus Values at Three Stream Sites 2 3 120 0.09 Downstream 493709 493708 493712 STORET# 3-7 ------- Nutrient Loading Loadings were calculated from the concentration and flow data as lbs/day for ammonia N, total phosphorus (TP), dissolved phosphorus (TDP) and N02+N03; and tons/day for TDS and TSS. Load calculations were volume-weighted from each pair of concentration and flow data, then averaged to give a mean load over the study period. Results are shown in Table 3-4 and Figure 3-4. While concentrations generally stayed constant or increased as flows moved downstream, loads increase at the middle station (STORET 493708) and then decrease at the lower station (STORET 493712). This was the result of flows increasing between the upper and middle stations and then decreasing at the lower station. Table 3-4. Mean Loads and Concentrations of Selected Parameters for Stream Sites Mean Loads STORET Flow Ammonia N T. Phos. TDS @ 180C D-N02+N03 D-T Phos. TSS # CFS Ibs/dav Ibs/dav tons/dav lbs/day Ibs/dav tons/dav 493709 24.15 6.244 2.542 16.899 10.243 1.191 0.484 493708 29.89 7.311 6.463 22.734 17.910 1.918 4.229 493712 22.51 6.233 10.334 16.580 12.951 1.284 8.077 593241 5.28 0.711 2.091 2.428 0.285 0.266 0.104 Mean Concentrations STORET Ammonia N T. Phos. TDS @180C D-N02+N03 D-T Phos. TSS # mq/l mg/1 mg/l mq/l mq/l mg/1 493709 0.04 0.02 267.7 0.11 0.01 7.45 493708 0.05 0.04 299.4 0.1 0.01 47.91 493712 0.05 0.08 378.38 0.22 0.01 101.97 593241 0.03 0.05 161 0.01 0.01 4.8 The annual average TP load to Pelican Lake was 10.33 lbs/day (3770 lbs/year). Approximately 12% of this load was DTP. A reduction in phosphorus concentration to a recommended level of 0.05 mg/1 would result in a loading reduction of 4.26 lbs per day. The annual average TSS load to the lake was 8.1 tons per day (2957 tons/year). A reduction in TSS concentration to a recommended level of 90 mg/1 would result in a loading reduction of 2.6 tons/day. 3-8 ------- Figure 3-4. Mean Nutrient Loads and Concentrations at Three Sites on Ouray Park Canal. Mean Loads 493709 493708 493712 STORET * Mean Concentrations 493709 493708 493712 STORET# 3-9 ------- CHAPTER 4: WATER QUALITY EVALUATIONS - LAKE Historical Water Quality Data In 1975 the National Eutrophication Study (NES) included an assessment of Pelican Lake (EPA, 1975). Their survey indicated Pelican Lake was eutrophic. It ranked twelfth in overall trophic quality when the 27 Utah lakes and reservoirs were compared. Survey limnologists observed extensive growths of submerged macrophytes with a phytoplankton bloom present during their September survey. Mean chlorophyll-a concentrations were reported at 6.33 mg/1 with a mean secchi reading of 1.55 meters. The 1975 NES report listed 11 different genera of phytoplankton. Of those 11 genera, only one was a Diatom, Fragilaria, and four were blue-green algae, Microcystis, Dactylococcopsis, Merismopedia, and Oscillatoria. Data obtained during surveys in 1979 and 1980 by the Utah Division of Water Quality (1982) indicated the lake to be mesotrophic with an overall TSI value of 48.65 (TP = 58.5, SD = 39.25, CLA = 48.65). Reported single values for arsenic, copper and lead exceeded state standards. Pelican Lake was ranked number 49 out of 70 lakes in the state for an overall need to improve the reservoir's conditions. Since that time, the lake has experienced a major reduction in fish populations. Data obtained for the Utah Lake Water Quality Assessment in 1990 (Division of Water Quality, 1997) reported an overall TSI value of 45.26 (TP = 50.71, SD = 46.51, CLA = 38.56). Burdick (1979) pointed out that investigators have perennially noted dead fish at ice-out on the lake. Samples taken in January and March of 1977 (Burdick, 1979) indicated temperature and dissolved oxygen (D.O.) profile patterns typical of the summer season. However, samples taken in mid-February showed stratification and deterioration of dissolved oxygen levels. Dissolved oxygen levels below 1.3 mg/1 where found near the bottom depth at several stations. Oxygen levels in the top 2 meters of the water column were at acceptable levels (5-7 mg/1). D.O. samples taken during the same study in 1978 found critical D.O. levels below 3 meters during 4-1 ------- February through mid-March. Again, dissolved oxygen in the top 1 to 2 meters of the water column were at acceptable levels. The investigators suggested that decrease oxygen levels found during the winter of 1978 could be tied to the fact that lake levels were 20% lower in 1978 than in 1977. Reservoir Profile Deep lakes stratify into layers of markedly different temperatures during part of the year. Thermal structure is a physical process. Cold water is heavier than warm water and will sink to the bottom of the lake. During warm summer months, the sun efficiently warms water in the photic zone and can establish temperature gradients. Rapidly flushed or shallow lakes normally do not develop persistent stratification. Representative temperature and dissolve oxygen profiles for Pelican Lake are shown in Figure 4- 1. The complete set of lake profile data is contained in Appendix A. The shallow nature of Pelican Lake is not conducive to strong thermal stratification. Summer temperature profiles show little or no stratification. D.O. concentrations for the four lake sites were typically near saturation levels (7-8 mg/1). Some decrease in lake-wide D.O. levels was noted late in the productive season, but they were well above the state 30-day standard of 5.5 mg/1. Profile data collected in February, 1996 showed deterioration of D.O. at depths below 3 meters (Figure 4-1). Oxygen levels in the top 3 meters of the water column were at acceptable levels (7-8 mg/1). Lake water levels during the study period were above average and the winters were mild. Open water was present on the lake as early as the first week of March 1995. These factors likely contribute to a more favorable D.O. regime during this period. Pelican Lake does experience substantial dissolved oxygen depletion under the winter ice cover in some years. The reasons for winter D.O. depletion are: 1) decomposition of macrophytes and algae under winter ice; 2) reduced photosynthesis by these same organisms; 3) low water levels at the onset of ice cover, 4-2 ------- resulting in an a rather small volume of oxygenated lake water to accommodate oxygen demands of plant decomposition; and 4) a long period of winter ice cover with little inflow to lake. Figure 4-1 (continued). Pelican Lake Temperature and DO Profiles May 24,1995 5/24/95, West Midlake 01 Temp (Deg. C) and DO (mg/l) 2 4 6 8 10 12 14 16 18 5/24/95, East Bay 02 Temp (Deg. C) and DO (mg/l) 0 2 4 6 8 10 12 14 16 18 0 0.5 1 I 15 r 2 I 2.5 ° 3 5/24/95, Southeast Bay 03 Temp (Deg. C) and DO (mg/l) 0 2 4 6 8 10 12 14 16 18 0 5/24/95, Near West Bay Inlet Temp (Deg. C) and DO (mg/l) 2 4 6 8 10 12 14 16 1 4-3 ------- Figure 4-1. Pelican Lake Temperature and DO Profiles March 10,1995 3/10/95, West Midlake 01 Temp (Deg. C) and DO (mg/l) 01 23456789 3/10/95, Site 3 Temp (Deg. C) and DO (mg/l) 1123456789 3/10/95, Site 5 Temp (Deg. C) and DO (mg/l) 0123456789 3/10/95, Site2 Temp (Deg. C) and DO (mg/l) 0123456789 3/10/95, Site 4 Temp (Deg. C)and DO (mg/l) 0123456789 3/10/95, Site 6 Temp (Deg. C) and DO (mg/l) 123456789 4-4 ------- Figure 4-1 (continued). Pelican Lake Temperature and DO Profiles March 10,1995 3/10/95, Site 8 Temp (Deg. C) and DO (mg/l) 123456789 10 3/10/95, Site 7 Temp (Deg. C) and DO (mg/l) 123456789 2 2.5 3 3,5 0 0.5 1 1 1.5 i 2 o O 2.5 v ¦* o (0 J _1 3.5 4 4.5 3/10/95, East Bay Temp (Deg. C) and DO (mg/l) 123456789 10 3/10/95, Site 11 3/10/95, Site 12 Temp (Deg. C) and DO (mg/l) 0123456789 10 0 0.5 B 1 i 1-5 01 Q 2 • je « 2.5 3 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 Temp (Deg. C) and DO (mg/l) 123456789 10 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 3/10/95, Site 10 Temp (Deg. C) and DO (mg/l) 1 23456789 10 4-5 ------- Figure 4-1 (continued). Pelican Lake Temperature and DO Profiles August 15,1995 8/15/95, East Bay 02 Temp (Deg. C) and DO (trg/l) 3 6 9 12 15 18 21 24 27 8/15/95, West Mid lake 01 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 Temp (Deg. C) and DO (mg/l) 3 6 9 12 15 18 21 24 27 8/15/95, Southeast Bay 03 Temp (Deg. C)and DO (mg/l) 0 3 6 9 12 15 18 21 24 27 0 _*_DO —g—Temp 8/1 5/95, Near West Bay Inlet 04 Temp (Deg. C) and DO (mg/l) 3 6 9 12 15 18 21 24 27 4-6 ------- Figure 4-1 (continued). Pelican Lake Temperature and DO Profiles February 7,1996 2/7/96, West Mid lake Temp (Deg. C) and DO (mg/l) 0 2 4 6 8 10 12 DO Temp 2/7/96, SE Bay Temp (Deg. C) and DO (mg/l) 0 2 4 6 8 10 12 2/7/96, Site 1 2/7/96, East Bay Temp (Deg. C) and DO (mg/l) 0 2 4 6 8 10 12 2/7/96, West Bay Temp (Deg. C) and DO (mg/l) 2 4 6 8 10 12 2/7/96, Site 2 Temp (Deg. C) and DO (mg/l) 0 1 23456789 10 11 4-7 ------- Figure 4-1 (continued). Pelican Lake Temperature and DO Profiles February 7,1996 2/7/96, Site 4 2/7/96, Site 3 Temp (Deg. C) and DO (mg/l) 2 4 6 8 10 12 Temp (Deg. C) and DO (mg/l) 0 2 4 6 8 10 0 2/7/96, Site 5 Temp (Deg. C) and DO (mg/l) 0 2 4 6 8 10 12 0 ^ . , j ___—. 0 5 — 1 g 1 U--- * ' f - -J £ 1 5 «— * ! + pn 2 j - ,-.|j A— ... —n—Temp 4-8 ------- Metals A metals analysis on the water samples from the lake was conducted for aluminum, arsenic, barium, cadmium, chromium, copper, iron, lead, manganese, mercury, selenium, silver, and zinc. Samples were collected near the bottom substratum. None of the metals were found in concentration exceeding the state water quality standards for designated uses. Metal concentrations are listed in Table 4-1. Table 4-1. Metals Values for Pelican Lake Samples STORET Date D-As D-Ba D-Cd D-Cr D-Cu D-Fe D-Pb D-Mn No MMDDYY uq/l uq/l uq/l uq/l uq/l uq/l uq/| uq/| D-Se uq/l D-Ag uq/I D-Zinc uq/l D-AI uq/l D-Hg uq/l 493713 493713 493713 493713 493713 493713 493713 493713 493713 493713 493713 493714 493714 493714 493714 493714 493714 493714 493714 493714 493715 493715 493715 493715 493715 493715 493715 493715 493715 493716 493716 3/10/1995 10/25/1995 11/15/1995 2/7/1996 3/20/1996 4/5/1996 5/29/1996 6/12/1996 7/10/1996 8/6/1996 9/16/1996 3/10/1995 10/25/1995 2/7/1996 3/20/1996 4/5/1996 5/29/1996 6/12/1996 7/10/1996 8/6/1996 10/25/1995 2/7/1996 3/20/1996 4/5/1996 5/29/1996 6/12/1996 7/10/1996 8/6/1996 9/16/1996 3/10/1995 7/10/1996 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 110 61 77 120 108 112 99 81 45 52 43 110 63 120 108 113 100 80 53 49 95 110 111 115 88 66 41 58 71 100 42 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 14 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <12.0 <12.0 <12.0 <12.0 <12.0 <12.0 <12.0 <12.0 <12.0 <12.0 <12.0 <12.0 <12.0 <12.0 <12.0 <12.0 <12.0 <12.0 <12.0 <12.0 <12.0 <12.0 <12.0 <12.0 <12.0 <12.0 <12.0 <12.0 <12.0 <12.0 <12.0 <20.0 28 <20.0 26 <20.0 21.9 <20.0 <20.0 <20.0 <20.0 <20.0 <20.0 21 <20.0 <20.0 <20.0 <20.0 36.3 <20.0 <20.0 29 <20.0 24.1 <20.0 <20.0 <20.0 <20.0 <20.0 <20.0 35 <20.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 16 5.4 <5.0 88 7.2 9.1 <5.0 <5.0 <5.0 <5.0 <5.0 13 <5.0 41 7.5 10.5 6.7 <5.0 <5.0 <5.0 <5.0 6 10.5 9.1 <5.0 <5.0 <5.0 <5.0 <5.0 10 <5.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 1.8 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 66 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 40 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <30.0 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 4-9 ------- Chemical Evaluation Chemical analyses were performed to determine Total Volatile Solids, Residual Suspended Solids (RSS), Total Suspended Solids, Calcium, Magnesium, Potassium, Sodium, Chloride, Sulfate, Total Alkalinity, Total Hardness, and Total Dissolved Solids (TDS). Specific Conductance and pH were determined in the field. A summary of the results of these tests is shown in Table 4-2. The complete data set is contained in Appendix B. The mean concentrations for these parameters are all within state water quality standards. Observed pH values were high with approximately 35% (16 of 46) samples exceeding the state standard of 9.0. High pH values in the lake are likely the result of photosynthesis and the reduction of CO, by the large biomass of aquatic vegetation found in the lake (Cole, 1979). High DO levels at the surface during the growing season also support this conclusion. Overall, these chemical data indicate a hard, moderately alkaline water which is acceptable for irrigation, fish, wildlife and recreational uses based on its general chemistry. Table 4-2. Chemical Analysis Data Summary of Pelican Lake Samples. F-pH T Vol Sol RSS T.Sus.Sol D-Calcium D-Magnesum D-Potassum mq/l mq/l mg/l mg/l mg/l mg/l MEAN 8.86 1.59 2.62 2.32 27.70 33.75 3.57 MAX 10.1 5 5 9 43 44 5.4 MIN 7.6 0 1.5 2 10.3 13 1.2 STD. DEV. 0.560 1.316 1.147 1.232 9.812 3.579 0.604 N 254 83 98 98 125 125 95 D-Sodium Chloride Sulfate Tot. Alk. T. Hardns. F-Sp.Cond. TDS @180C mq/l mq/l mq/l mg/l mq/l umhos/cm mq/l MEAN 40.92 17.70 109.08 161.90 207.95 542.76 334.31 MAX 65 165 161.5 208 273.4 668 464 MIN 8.9 3.5 43.154 98 130.8 172 196 STD. DEV. 8.440 16.236 22.531 28.805 27.491 63.137 37.044 N 96 97 97 97 125 254 97 4-10 ------- Nutrients Ammonia, Nitrate+Nitrite, Total Phosphorus, Dissolved Total Phosphorus, and Total Kjeldahl Nitrogen were analyzed for lake samples. A summary of the results of these tests are shown in Table 4-3. The complete data set is contained in Appendix B. Phosphorus is often the key nutrient in determining the quantity of algae in a lake. Phosphorus is typically the least abundant element required for plant growth and commonly limits biological productivity in aquatic ecosystems. However, nitrogen is the limiting nutrient in some lakes. In a nitrogen-limited system, unless a large nitrogen deficiency exists so as to limit algae growth almost continually, reductions in algae growth by further reductions of nitrogen alone may cause shifts towards more of the noxious blue-green algal species. An evaluation of the nitrogen to phosphorus ratio (N:P) was completed to consider the limiting nutrient in the lake. A ratio value of less than 14 will be defined as nitrogen limited while values of 14 or greater will be defined as phosphorus limited. In the N:P ratio, total nitrogen was calculated as the sum of NH3, N02 and N03 nitrogen. Phosphorus values represent total phosphorus. Phosphorus and nitrogen values include all samples at all depths. An average N:P ratio 4.5:1 was calculated, indicating a nitrogen limited system. Lake data collected by the Division of Water Quality in 1990 and 1992 also indicated nitrogen limitation (DWQ, 1997). Total phosphorus, as it relates to water quality standards is defined as an indicator of pollution and not a standard. The numeric criteria limit associated with lake water quality has been established at 0.025 mg/1. This is a generally accepted target level needed to put a lake into a moderate range of productivity. Nutrient analysis of Pelican Lake has yielded mean total phosphorus concentrations (0.015) well below this target level. 4-11 ------- Table 4-3. Mean Nutrient Values for Pelican Lake Samples Ammonia N D-N02+N03 T. Phos. D-T Phos. T.K.N. mq/l mq/l mq/l mq/l mq/l Mean 0.047 0.021 0.015 0.012 0.730 Min 0.025 0.01 0.005 0.005 0.05 Max 0.6 0.66 0.084 0.08 1.95 Std. Dev. 0.053 0.054 0.010 0.050 0.243 N 255 256 256 256 228 Trophic Level Evaluation The Carlson (1977) Trophic State Index (TSI) classifies or predicts productivity of a lake as compared to typical lakes. The index uses three indicators: secchi depth, chlorophyll-a, and total phosphorus. Secchi depth measurements indicate transparency, chlorophyll-a indicated the amount of algal biomass, and total phosphorus indicates the nutrient availability to drive subsequent algal growth. To determine average TSI values, the following procedure was used: a. The average TSI value for total phosphorus, Secchi depth, and chlorophyll-a for each lake site was determined using the standard Carlson formulas. b. Those values where then averaged to determine an overall TSI value at each lake station. c. The average TSI value for the lake was calculated by averaging all of the station TSI values. These values were then compared to the following values and the trophic status determined: TSI index values < 40 - Oligotrophic TSI index values 40 to 50 - Mesotrophic TSI index values 50 to 60 - Eutrophic TSI index values > 60 - Hypereutrophic 4-12 ------- Table 4-4 shows the individual, station average, and total average TSI values for Pelican Lake. Figure 4-2 shows how the TSI index varied over time during the study period. TSI values indicate that Pelican Lake is on the low end of the mesotrophic category. However, the very high densities of macrophytes found in the lake suggest that the lake may more appropriately be classified in the mid to high mesotrophic range. Figure 4-2 TSI Values, West Midlake 01 70 60 50 40 <7) i- 30 20 10 0 DATE 4-13 ------- Table 4-4. Mean TSI Values For Pelican Lake Samples Mean Mean Mean Ave STORET Transp. T. Phos. Chlor-A TSI No m ma/I ua/l 493713 3.432 0.013 2.148 TSI 42.2 41.5 38.1 40.6 493714 3.619 0.016 2.250 TSI 41.5 43.8 38.6 41.3 493715 3.097 0.015 1.856 TSI 43.7 42.8 36.7 41.1 493716 2.536 0.012 1.929 TSI 46.6 39.7 37.0 41,1 Average 3.171 0.014 2.046 Average 43.5 41.9 37.6 41.0 Data obtained during surveys in 1979 and 1980 by the Utah Division of Water Quality (1982) indicated the lake to be mesotrophic with an overall TSI value of 48.65 (TP = 58.5, SD = 39.25, CLA = 48.65). Data obtained for the Utah Lake Water Quality Assessment in 1990 (Division of Water Quality, 1997) reported an overall TSI value of 45.26 (TP = 50.71, SD = 46.51, CLA = 38.56). 4-14 ------- Chapter 5: BIOLOGICAL EVALUATION Fisheries An in-depth fishery study was conducted by the Utah Division of Wildlife Resources (UDWR) over a two year period from 1995-1996. The UDWR sampled the fishery, including trend gill netting, winter mortality counts, seine net sampling, creel census, piscivorus bird counts and stomach sampling, and fish tissue sampling for contaminants. The purpose of the UDWR study was to determine: o the current relative abundance of fish species in Pelican Lake o the annual winter mortality of fish in the lake o the spawning success of sport fish in the lake o the current angler utilization of the fishery o the number and species of piscivorus birds at Pelican Lake o which bird species are consuming fish at the lake o the heavy metals and organic compounds content of Pelican lake fish tissues. The following is a brief synopsis of the UDWR study. The full report is contained in Appendix D. Gill Netting The mean gill net catch rate per unit effort (fish per hour) increased from 1995 to 1996 for most species; largemouth bass (0.29-0.47), bluegill (0.13-0.21), black bullhead (0.05-0.13), and green sunfish (0.01-0.04). However, white sucker relative abundance decreased slightly (0.04-0.01). Increases in the relative abundance are likely due to high water years during the study, particularly during the winter months. Figure 5-1 shows the catch per unit effort (CPUE) from summer trend netting for largemouth bass and bluegill from 1984 - 1996. 5-1 ------- Figure 5-1. Catch per unit effort (CPUE) from Summer Trend Netting for Largemouth Bass and Bluegill from 1984 -1996. ¦ LM Bass ¦ Bluegill ¦¦:¦¦¦¦¦¦¦ ; ¦¦¦¦ . ¦ ... ' .;a>S MMHirilflg J ; ' . -4- 1984 1985 1986 1987 1988 1990 1991 1992 1993 1994 1995 1996 Year Winter Mortality No winter mortality was observed either year. Again, investigators noted that abundant water during the study period reduced anoxic conditions in the lake during the winter. Long-term lake depth data was not available. However, in an effort to correlate low water years with a decrease in fish numbers, annual rainfall totals at Vernal, Utah were compared to bluegill gill net results over the period from 1984 - 1996. Figure 5-2 shows a strong connection between the 1988 and 1989 drought years and the subsequent decline of the bluegill fishery. Spawning Success Successful reproduction of largemouth bass and bluegill was documented in the seine net sampling both years. 5-2 ------- Figure 5-2. Bluegill Gill Net Numbers vs Annual Precipitation IBluegill Numbers -Annual Precip. oS q& oP 01s oO' CK-3 of" cfc fP & & & ^ ^ Year Creel Census The number of anglers decreased from 1995 to 1996 (534-228) while the number of angler hours were nearly identical (1404 -1422). Catch rates significantly increased (0.61 fish/hour-2.35 fish/hour) between the two years. Drawdowns in 1996 limited boat access in the middle of the summer, which explains the decreased number of anglers. The high catch rates in 1996 would account for the increased hours per angler. Piscivorus Birds Piscivorus Bird counts revealed high use of the lake by eared grebes and western grebes, and low use by great blue herons, cormorants, and pied-billed grebes. Great blue herons, cormorants and one western grebe were found to be consuming fish. Due to the small number of birds stomachs sampled, an estimate of annual fish consumption was not calculated. However, the fish population at Pelican Lake increased throughout the study despite moderate and increasing numbers of piscivorus birds. It is apparent that bird predation at Pelican Lake is not suppressing the warm-water fish population at this time. 5-3 ------- Fish Tissue Analysis Fish tissue analysis on largemouth bass, bluegill, black bullhead, and white sucker did not indicate any organic compound contamination. Heavy metal analysis revealed trace amounts of mercury and selenium. However, the extremely low levels of these metals were determined to have no effect on the fish population. Mercury and selenium occur naturally in the drainage. UDWR investigators summarized that Pelican Lake fishery populations positively increased in response to higher storage levels associated with wetter water years. However, they indicated that the fishery will likely be at risk during the next drought cycle. Specific recommendations are included in Chapter 9. Phytoplankton A total of 13 composite photic zone phytoplankton samples were taken throughout the study. Samples were processed and analyzed by Dr. Samuel Rushforth. His report is contained in Appendix E. A total of 42 taxa was identified from collected samples. Several additional taxa were present in the samples recorded as pennate diatoms and centric diatoms. The taxa collected and identified were distributed in 6 taxonomic divisions with the following species composition: 3 diatoms (Bacillariophyta), 26 green algae (Chlorophyta), 3 chrysophytes (Crysophyta), 7 blue- green algae (Cyanophyta), 1 euglenophyte (Euglenophyta), and 2 dinoflagellates (Pyrrhophyta). Table 5-1 shows the relative density (%) of phytoplankton taxa from each of the Pelican Lake Samples. Important species indices (ISIs) were calculated by multiplying the percent frequency of the taxon by its average relative density. This index is often preferable to comparing average density alone since it reflects both the distribution and abundance of a taxon in a system (Rushforth, 1994). Table 5.2 shows a list of phytoplankton species having importance index values greater than 0.1. The most important species in all Pelican Lake plankton samples for 1995 and 1996 was the dinoflagellate Ceratium hirundinella. Additional important taxa included the green algae Mougeotia species, Oocystis species, Straurastrum gracile, Pediastrum duplex, 5-4 ------- Table 5-2. List of Pelican Lake Phytoplankton Species with an Importance Index Values Greater than 0.1 TAXON IMPORTANCE VALUE Ceratium hirundinella 26.16 Mougeotia species 5.51 Peridinium species 3.78 Oocystis species 3.44 Straurastrum gracile 2.73 Pennate diatoms 2.61 Fragilaria crotonensis 1.97 Pediastrum duplex 1.58 Oocystis gigas 0.77 Sphaerocystis schroeteri 0.75 Cosmarium species 0.61 Unknown sperical Chlorophyta 0.33 Microcystis incerta 0.32 Chrysocapsa planktonica 0.26 Closterium species 0.23 Oocystis borgei 0.20 Botryococcus sudeticus 0.16 Tetraedron species 0.10 Gomphosphaeria aponina 0.10 Sphaerocystis schroeteri, and Oocystis gigas, the diatoms Fragilaria crotonensis and the pennate diatom category, and the dinoflagellate Peridinium species. These species and categories comprise about 94% of the sum importance value for all taxa sampled in Pelican Lake (Figure 5- 3). The dinoflagellates (57% of the flora) and green algae (32% of the flora) together comprised about 89% of the flora as measured by determining ISIs. The diatoms comprised about 10% of the flora, while the bluegreen algae, chrysophytes and euglenophyte were present in low frequency and biomass (Figure 5-4). The low biomass of cyanophytes and the rather diverse nature of the phytoplankton found in the lake are indicative of reasonably good water quality. Rushforth (1995) indicated that the dinoflagellate Ceratium hirundinella generally occurs in eutrophic to hyperutropic waters, although it may occur in relatively clean to mesotrophic waters. Dr. Rushforth noted that C. 5-5 ------- hirundinella is often a dominant phytoplankter in Utah Lake. Macrophytes Pelican Lake supports a significant population of rooted and floating water plants as well as filamentous algae. The shallow and relatively clear nature of the lake, coupled with adequate nutrient availability, combine to provide ideal growing conditions for macrophytes. During the study period, the lake approached an estimated 90% density coverage and was essentially weed- choked from July to October. The principal macrophytes present in the lake include: pondweed (Potamogeton pectinatus), coontail (Ceratophyllum demersum ), musk grass (Chara sp.), and water milfoil (Myriophyllum sp.). The near shore littoral zone contains dense stands of common cattail (Typha latifolia), reeds (.Phragmites sp.) And bulrush (Scirpus sp.) As previously discussed in Chapter 4, this large biomass has the potential for having a significant adverse affect on dissolved oxygen regimes in the lake under winter ice. Although high water levels in the lake and mild winters appear to have to have ameliorated dissolved oxygen depletion during the study period, the potential for severe oxygen depletion during low water years remains a significant concern. 5-6 ------- 38.99 0 0 6.09 0 2.92 0 0 9.13 0 5.68 1.22 0 0 5.68 0 0 0 0 0 0.28 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Table 5-1. Relative Density of Phytoplankton Taxa from Pelican Lake Samples 10/6/95(1) 10/6/95(2) 10/6/95 (3) 5/96 (l) 7/10/96 (1) 7/10/96 (2) 7/10/96 (4) 7/10/96(4) 8/6/96(1) 8/6/96(2) 8/6/9TW 8.97 68 0 0 67.49 39.62 60.07 29.54 0 23.55 8 83 0 0 0 85.62 7.94 0 0 0 59.76 27.7 5.19 0 0 0 0 5.16 30.3 11.48 33.88 7.77 18.01 0 0.04 6 16.92 0 1 55 1.75 1.86 7.04 1.17 2.08 3.11 56.57 0 0 0 5.16 15 15 11.48 0 3.88 0 0 8.14 1.6 1.06 4.79 1.52 4.1 0.42 1.95 5.07 1.44 0.71 20.57 24 0 0 0 0 10.6 0 3.59 0 0 3.16 0 79.63 0 0 0 0 0 0 0 6.23 0 0 0 0 0.36 0 1.56 0 2.96 1.87 1.64 0 0 0 0 8.73 0 0 19.11 0 0 0 0.74 0 0 0 1.11 0 0 0 2.51 5.82 1.46 0 0.4 0 0 0 0.7 0.88 0.52 0.42 0.97 0.93 0 0 0 0 0 0 0 0 4 18 1.39 4.15 0 0 0 0 0 0 0 0 0 0 43.61 0 0 0 0 0 0 0 0 5 98 0 1.45 0 0 0 0 0.64 0.93 0.71 3.48 0 0 0 1.42 0 0 0 0 6.29 0 0 0 0 1.4 0 0 0.8 0 0 0 56 0 0 0.32 0.75 0.19 0 0 0 0 0 0 0.71 0.7 0.24 0.55 1.04 0 0 0 0 0 0 0 0 0 13.85 0 0.04 0 0 46 0.6 0 0 33 0 0.12 0 0 0 0 0 0 0 0 0 0 0 0 0 12.46 0 0 0 0 0 0 0 0 1.33 1.03 0.77 0 0 0 8.99 0 0 0 0 0 0 0 0.07 0 0 0 0 0 0 0 0.07 0.69 0.97 0 0 0 0 0.19 0 0 1.25 0 0 0.87 0 0 0 0 0 0 0 1.39 0.48 0 0.42 0.21 0 0 0 0 0 0 0 0.12 0 0.21 0 0 0 0 0 0 0 0 0 0 0 0.03 0 0 0 0.09 0 0.19 0 0.13 0 0.06 0 0 0 0 0 0 0 0 0 0 2.08 0 0 0 0 0 0 0 0 0 0 0.93 0 0 0.8 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.7 0 0 0 0 0 0 0 0 0 0 0 0 0 0.06 0 0 0 0 0 0 0 0.07 0.02 0 0 0 0 0 0 0 0 0 0 0 0 0.38 0 0 0.33 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.3 0 0 0 0 0 0 0 0 0.26 0 0 0 0 0 0 0 0.06 0 0 0 0 0 0 0.04 Q 0 0 0 0 0 0 0 0 0 5-7 ------- Figure 5-3. Percent of Important Species Indices of the Major Species of Phytoplankton in Pelican Lake Samples Peridnium species 7% All Others 5% Mougeotic species 11% Cosmarium species -1% Oocystis species - 7% O. gigas -1% S. gracile - 5% P. duplex - 3% Ceratium himndinella 50% S. schroeten -1% Pennate d atoms - 5% P. cnotonensis 4% Figure 5-4. Percent of Important Species Index Comprised by the Major groups of Phytoplankton in Pelican Lake Samples 5-8 ------- CHAPTER 6. RECREATION/SOCIO-ECONOMIC IMPACT Pelican Lake has a variety of uses, including water storage for irrigation, fishing, wetlands and waterfowl habitat, hunting and other water-based recreation. The primary function of the lake is irrigation water storage, but recreational opportunities, primarily fishing, continue to be play an important role in the lake's value to its users. Fishing, boating, and hunting are popular activities at the lake. There is a Bureau of Land Management (BLM) camping area on the south side of the lake which will accommodate approximately 18 units and provides a concrete boat ramp and restroom facilities. Facilities are limited at the lake but can be found in nearby Roosevelt or Vernal. A convenience store and cafe are located on the highway just to the northeast of the lake. Fishing, the most important recreational activity at Pelican Lake, is adversely affected by poor quality during some years. During low water years, low levels of dissolved oxygen, caused by poor water exchange and decaying aquatic vegetation under winter ice cover, have had disastrous impacts on the fishery. Recreational use of Pelican Lake has followed a pattern which is closely tied to the success of the bluegill and bass fishery. The Utah DWR (this study) indicated that the Pelican Lake fishery provided 534 angler days in 1995 and 228 days in 1996, compared to a peak pressure of 10,054 angler days in 1975. One estimate of economic value of recreational activities is the cost incurred by the recreationist. The U.S. Fish and Wildlife Service (1998) estimated that Utah anglers spend approximately $31 in fishing trip-related expenditures per day (excluding equipment). Comparing angler days from 1975 (10,054) and 1996 (228), this represents an annual loss of $304,606 due to the declining fishery in the lake. Another approach of estimating value of an activity is to estimate the income that an individual would be willing to give up to participate in a recreation day of a given activity. Based on a day's income of perhaps $100, the difference in angler days from 1975 compared to 1996 results in a value of to $982,600 per year. Although the economic values associated with angler days are only rough estimates, it can readily be assumed that the decline in 6-1 ------- user days for this resource represents a significant economic impact to the area. The recovery of this fishery would have a significant economic benefit to the local economy. 6-2 ------- Chapter 7: PUBLIC PARTICIPATION One of the first steps in developing a successful lake management plan is to invite participation from all the peoples and groups that have an interest in the reservoir or those who will be affected by a lake project. Partnerships provide a forum for solving complex problems that involve many interests. The people with a stake in the reservoir watershed, those that are close to problems that may exist, are best able to help determine effective solutions. Partnerships are helpful for encouraging clear and open communication , promoting a spirit of trust and cooperation, raising public awareness and educating people, identifying problems, needs and financial resources. The Utah Division of Wildlife Resources coordinated the public participation component of this study. A Pelican Lake Technical Advisory Committee was formed in 1994. Committee members were asked to participate according to their interest in the lake, its watershed, and downstream uses. Members included people with diverse talents including those with technical, leadership, communication, education and regulatory skills. The Pelican Lake Technical Advisory Committee was organized with the following members. Utah Division of Water Quality Utah Division of Wildlife Resources Utah Bass Federation Uintah Basin Bass Group Ouray National Wildlife Reserve US Fish and Wildlife Service BLM Ouray Park Irrigation Company The Pelican Lake Committee met throughout the development and monitoring stage of the project to receive updates and provide input to the study. 7-1 ------- CHAPTER 8. QUALITY ASSURANCE/QUALITY CONTROL Duplicate sampling was performed during the project at two sites, one for lake samples and one for the watershed sites. Replicate samples were given "dummy names", STORET numbers and field sheets to produce a blind duplicate sample. The term blind duplicate refers to a sample where the analyst is unaware of the duplication. This effort was performed to increase the validity of the data and expose any problem analyses or sampling techniques. The validity is increased by demonstrating the reproducibility of the reported values. Appendix F of this report is a memorandum from the monitoring section of the Division of Water Quality, stating that none of the duplicate samples showed significant differences in several duplicate samples. The laboratory data accompanying the above stated memorandum was not included in this report due to its length, plus the fact that the memo states that there were no significant problems associated with sampling or laboratory procedure. The data is available for review upon request. 8-1 ------- CHAPTER 9: RESTORATION FEASIBILITY AND ALTERNATIVES Low water levels going into winter appear to be the trigger for winter fish kills and the cause for the collapse of the fishery in Pelican Lake. The factors that contribute to this process the shallow nature of the lake, an adequate nutrient supply, abundant macrophyte growth (with subsequent die-off and decay under winter ice), and little or no water inflow during the critical late fall/winter period. In general, evaluation of data collected during the study period showed favorable water quality conditions. However, a significant potential for a repeated collapse of the fishery exists during future drought cycles. Lake Management Alternatives Possible Macrophyte Controls The excessive growth of water plants causes two problems. First, it interferes with boating, fishing and overall aesthetics. Second, is the potential loss of oxygen under winter ice, particularly in low water years. The macrophyte problem is more severe in low water years because the total oxygen stored in the lake is proportional to its volume (depth). The problem is compounded during a drought because in addition to inadequate or nonexistent inflows in the fall and early winter, water use by irrigators increases as well, further drawing down the lake. Table 9-1 presents a matrix treatment options, effects and relative cost of several common management techniques for controlling aquatic vegetation (EPA, 1988). 9-1 ------- Table 9-1. Comparison of Management Techniques for Control of Nuisance Aquatic Weeds Treatment Short Term Effect Long Term Effect Cost Chance of Negative Effects Sediment Removal Excellent Excellent Poor Fair Drawdown Good Fair Excellent Good Sediment Covers Excellent Fair Poor Excellent Grass Carp Poor Excellent Excellent Fair/Good Insects Poor Good Excellent Excellent Harvesting Excellent Fair Fair Fair/Good Hebicides Excellent Poor Fair Poor Dredging Dredging for the purpose of aquatic plant management is most effective in targeted areas where increasing water depth and reducing nutrient-rich sediments will limit plant growth. Sediments in productive systems such as Pelican Lake are nutrient-rich. The two nutrients of prime concern are phosphorus and nitrogen. Both are found in lake sediments or dissolved in the water column, due to its shallow depth, the lake responds to nutrient rich sediments by extensive growth of macrophytes. Table 9-1 shows that dredging is excellent for both short and long-term effectiveness in macrophyte control after the source of sediment is controlled. However, it rates poor for cost. Another potential negative aspect of dredging is that a disposal area of adequate size to handle the high volume of sediments. In Utah, Salem Lake was dredged in 1992 to accomplish the same goals as needed in Pelican Lake. Even though dredging deepened the lake and removed the nutrient rich sediments, macrophytes still remain a problem after five years (Loveless, 1998). The inflow to the lake carries a high sediment load. The Utah DWR has suggested (this study) that it is likely that the conservation pool at Pelican Lake has been reduced through 9-2 ------- sedimentation, compounding the dissolved oxygen problem by reducing the overall lake volume. A bathymetric survey needs to be conducted to determine any compromise in the conservation pool. If the lake volume has been reduced, dredging may be necessary to recover the full conservation pool. Mechanical Weed Harvesting Mechanical harvesters are used to mow and remove aquatic plants from lakes. Harvesters are labor intensive and cannot be used in shallow areas where obstacles are present. Mechanical weed harvesting has an excellent short-term benefit and a fair long-term benefit. The cost of implementing this alternative is fair. Weed harvesters come in a variety of sizes ranging from one which can be adapted to a small boat, to large models which utilize pontoons. Any removal of macrophytes and filamentous algae before they die and decompose would be considered a benefit to the lake. Grass Carp Investigate the use of grass carp (C. idella ) in Pelican Lake for the biological control of macrophytes. Triploid grass carp, a sterile fish, has been most widely used in the United States. These fish are hardy, long-lived, may grow quite large (120 lbs), and are generally not caught. Grass carp are known to have a positive long-term effect for the control of filamentous algae and macrophytes in lakes (Table 9-1). They are rated poor for a short-term remedy, however. Loveless (1998) indicated that the Division of Wildlife Resources cooperated with Salem City to introduce grass carp into Salem Lake for demonstration purposes. After five years, the carp were growing very well. Macrophytes are still abundant, but short-term benefits were not anticipated. Investigators noted that stocking rates were very important, and suggested that a higher number of fish would have provided quicker results at Salem Lake. The presence of endangered fish species at the Ouray National Wildlife Refuge may preclude the use of this option due to possibility of introducing exotics species into that system. Chemical Treatment of Sediments and Herbicides Chemicals such as alum have been shown to be highly effective (EPA, 1988) in lakes to bind 9-3 ------- nutrients to the sediment so that they are not released back into the water column. Treatment of sediments will not have a long-term effect on macrophyte growth if the reservoir remains shallow. If dredging is considered an option at some point in time, then this alternative may be given serious consideration. Herbicides that kill targeted species of nuisance aquatic plant growth have been successfully applied in lakes. Due to social and environmental concerns regarding the use of chemical agent, all cost effective alternatives to herbicides should be considered first. Hydrologic Control Measures Following completion of a lake bathymetric survey recommended above, a survey should be completed to determine the DWR conservation pool elevation, and a staff gauge installed. In this way the conservation pool elevation can be monitored to insure that the water stays in the lake. This is critical to the to the winter survival of the fishery and to protect the water right investment. A staff gauge would also aid the local water users in monitoring their available water. At present, there is no way to accurately determine if the lake is at the conservation pool. The timing of water delivery is also important to the winter survival of the fishery. If the lake can be filled in the late fall or winter it would mitigate many of the problems. In low water years, water has simply not been available to put into Pelican Lake in the fall. The purchase or exchange of additional water rights would greatly benefit the Pelican Lake fishery. Watershed Management Alternatives A cooperative approach with local land owners, lake users, the Ouray Park Irrigation Company and state and federal resource management agencies should be undertaken to address sources of sediment and nutrient loading in the watershed. In-stream erosion of the canal bed and banks could be addressed by implementing bank stabilization treatments and riparian buffer zones in critical areas. 9-4 ------- The following general best management practices are recommended to reduce erosion, sedimentation and nutrient loading from the watershed: 1. Apply fertilizers carefully and only when needed. Apply animal wastes to the land in a careful and planned manner so as to reduce transport to water courses. Timing of application can be critical to control and prevent surface wash to streams, either from frozen fields or from surface runoff during irrigation or heavy rainfall. 2. Practice proper water management to control or reduce surface runoff from irrigation and return flow waters to reduce nutrients and sediments from reaching streams and canals. 3. Manage lands to reduce soil erosion, topsoil is particularly high in phosphorous and nitrogen. Erosion control on lands near surface watercourses can be significant value in reducing nutrient loadings to the waters entering the lake. 4. Keep animal wastes from getting into return flows and watercourses in the area. Prevent wastes and surface runoff waters from animal concentration areas from reaching watercourses. Curtail or manage access by animals in and around watercourse areas. This may involve development of alternative water sources, fencing, and creation of riparian buffer zones between areas of animal concentrations and the lakeshore or watercourse to uptake nutrients before they enter the lake. 9-5 ------- REFERENCES Burdick, B.D., 1979. Biology, Reproductive Potential and Impact of Fishing Pressure on the Bluegill Fishery of Pelican Lake, Uintah County, Utah. Master Thesis, Utah State University, Logan; 235 pp. Carlson, R.E. 1977. A Trophic State Index for Lakes. Limnol. Oceanog. 22:363-369. Cole, G.A., 1979. Textbook of Limnology. C.V. Morsby Co., St. Louis, Mo. 426 pp. Loveless, R., 1998. Diagnostic and Feasibility Report on Mantua Reservoir, Mountainlands Association Of Governments, Provo. Rushforth, S.A., 1995. Phytoplankton Floras from Mantua Reservoir, Summer 1994, 13 pp. U.S. Environmental Protection Agency, 1977. National Eutrophication Survey - Report on Pelican Lake, 13 pp. U.S. Environmental Protection Agency, 1988. The Lake and Reservoir Restoration Guidance Manual, First edition, EPA 440/5-88-002. U.S. Fish and Wildlife Service, 1998. National Survey of Fishing, Hunting and Wildlife Associated Recreation - Utah, FHW/96UT, 87 pp. Utah Division of Water Quality, 1982. State of Utah Clean Lakes Inventory and Classification, 257 pp. Utah Division of Water Quality, 1997. Utah's Lakes and Reservoirs. An inventory and Classification of Utah's Priority Lakes and Reservoirs. 10-1 ------- Appendix A Lake Profile Data ------- 10-Mar-95 Pelican Lake West Midlake; Start of transect Site 1 Site 2 Site 3 Site 4 Site 5 Site 6 Site 7 Site 8 Temp 7.38 7.27 7.33 7.2 7.12 7.04 7.07 7.07 Temp 7.05 7.04 7.08 7.15 7.22 7.71 PH DO Depth 8.11 7.76 0.2 8.05 7.43 0.7 8.01 6.91 1 8.01 6.68 1.6 8.01 6.71 2 8.01 6.78 2.5 8 6.78 3 8 6.66 3.5 PH DO Depth 8.03 6 3.7 8.01 6.09 3.3 8.01 6.12 2.7 8.02 6.05 2 8.02 6.36 1 8.09 6.51 0.2 Temp PH DO Depth 7.92 8.05 6.98 0.2 7.27 8.03 6.78 1.4 7.3 8 5.96 3 7.32 7.98 5.67 4 Pelican Lake E. Bay Site 9 Temp 8.88 8.37 7.74 7.66 7.6 7.55 7.43 7.4 7.4 Site 10 Temp PH 8.88 7.66 7.37 Site 11 Temp PH 8.88 7.81 7.33 Site 12 Temp PH 8.88 7.94 7.48 PH DO Depth 8.13 7.63 0.2 8.14 7 37 0.6 8.13 7.29 1.2 8.12 7.18 1.7 8.11 7.14 2.3 8.11 7.06 2.7 8.11 6.89 3.2 8.11 6.89 3.7 8.11 6.84 4.1 DO Depth 8.12 7.36 0.3 8.11 7.26 2.1 8.1 7 4.2 DO Depth 8.12 7.55 0.3 8.12 7.33 2 8.12 6.67 43 DO Depth 8.13 7.42 0.4 8.12 7.35 2.1 8.16 7.04 3.3 Temp PH DO Depth 8.5 8.02 6.8 0.2 Site 13 Temp PH DO 7.38 8.01 6.66 2 9.14 8 14 7.28 7.99 6.41 4 8.19 8.15 7.86 8.17 Temp PH DO Depth 8.53 8.01 6.99 0.2 Site 14 Temp PH DO 7.38 8.02 6.77 2.1 9.04 8.08 7.32 8.01 6.61 4 8.69 8.07 8.6 8.07 Temp PH DO Depth 8.51 8.09 8.35 8.07 7.03 0.2 8.38 8.11 7.71 8.07 6.99 0.8 8.37 8.13 7.56 8.05 6.82 1.6 7.51 8.05 6.68 1.9 7.47 8.05 6.58 2.3 7.43 8.04 6.59 2.9 7 43 8.03 6.37 3.2 7.45 8.02 6.09 3.8 7.46 8.02 5.96 4 Temp PH DO Depth 8.56 8.12 7.48 0.3 7.53 8.1 7.3 2.1 7.45 8.08 6.92 3.3 Temp PH DO Depth 8.74 8.12 7.48 0.3 7.56 8.11 7.36 2.1 Depth 7.66 0.3 7.64 1.9 7.4 3 2 Depth 7 16 7.12 7.1 7.14 7.34 7.39 0.2 0.7 1.2 1.7 2.2 2.7 7.35 8.06 6.54 3.8 ------- STORET 493713 (01) Site 1 Temp 14.44 14.44 14.44 14.44 14.44 14.44 14.43 14.43 14.43 14.44 STORET 493714(02) Site 2 Temp 14.41 14.41 14.41 14.39 14.39 14.31 14.18 14.03 14.01 STORET 493714 (03) Site 3 Temp 14.11 14.11 14.03 13.96 13.96 13.96 STORET 493715(04) Site 4 Temp 15.51 15.51 15.51 14.81 14.63 14 51 14.48 14.48 14.48 10-May-95 PH DO Depth 8.44 8.49 0.2 8.45 8.49 0.5 8.44 8.55 1 8.44 8.55 1.5 8.45 8.59 2 8.45 8.61 2.5 8.45 8.67 3 8.45 8.67 3.5 8.46 8.65 4 8.46 8.47 4.2 PH DO Depth 8.45 8.86 0.2 8.45 9.05 0.5 8.45 9.51 1 8.45 9.92 1 5 8.46 10.31 2 8.47 10.42 2.5 8.48 10.59 3 8 48 10.86 3.5 8.47 10.39 4 PH DO Depth 8.49 8.94 0.03 8.49 9.11 0.05 8.49 9.57 1 8.5 10.1 1.5 8.5 10.48 2 8.5 10.98 2.5 PH DO Depth 8.58 9.75 0.2 8.58 9.72 0.5 8.59 9.76 1 8.56 9.7 1.5 8.55 9.59 2 8.52 9.55 2.5 8.51 9.51 3 8.5 9.5 3.5 8.47 8.46 4 ------- 24-May-95 STORET 493713(01) Temp PH DO Depth 16.71 8.7 8.06 0.2 16.74 8.71 7.93 0.4 16.76 8.71 7.84 1.1 16.76 8.71 7.83 1.5 16.74 8.71 7.83 2 16.74 8.71 7.83 2.5 16.76 8.71 7.83 3 16.74 8.74 7.76 3.5 16.74 8.73 7.85 3.9 STORET 493714 (02) Temp PH DO Depth 16.83 8.65 7.79 0 16.85 8.66 7.7 0.5 16.85 8.66 7.69 1 16.86 8.66 7.67 1.5 16.86 8.66 7.66 2 16.86 8.67 7.65 2.5 16.86 8.67 7.64 3 16.86 8.67 7.63 3.5 16.86 8.67 7.63 4 16.86 8.67 7.62 4.3 STORET 493716(03) Temp PH DO Depth 16.76 8.66 7.82 0.1 16.78 8.67 7.81 0.5 16.78 8.68 7.79 1 16.8 8.68 7.79 1.4 16.8 8.68 7.77 1.9 16.8 8.67 7.77 2.4 STORET 493715(04) Temp PH DO Depth 16.68 8.69 8.81 0.1 16.74 8.75 8.87 0.5 16.76 8.76 8.81 1 16.76 8.78 8.78 1.4 16.78 8.78 8.81 2 16.8 8.79 8.79 2.5 16.8 8.79 8.8 3 16.8 8.8 8 77 3.5 16.83 8.8 8.67 4.1 ------- 15-Aug-95 STORET 493713 (01) Temp PH DO Depth 23.11 9.64 8.27 0.5 23.14 9.64 8.29 1 22.99 9.64 8.38 1.5 22.95 9.64 8.39 2 22.93 9.63 8.39 2.5 22.92 9.63 8.36 3.1 22.92 9.63 8.48 3.5 22.93 9.64 8.59 4.1 22.93 9.66 8.99 4.4 STORET 493714(02) Temp PH DO Depth 23.4 9.57 6.69 0.3 23.46 9.57 6.8 1 23 29 9.56 6.71 1.5 23.2 9.57 6.61 1.9 23.17 9.56 6.58 2.4 23.13 9.57 6.84 3 23.13 9.58 6.88 3.5 23.11 9.57 6.93 4 23.1 9.57 6.81 4.5 STORET 493716(03) Temp PH DO Depth 23.73 9.45 7.11 0.4 23.75 9.47 7 1 23.76 9.47 7.04 1.5 23.71 9.45 7.06 2 STORET 493715 (04) Temp PH DO Depth 22.86 9.6 8.68 0.7 22.79 9.59 8.53 1 22.68 9.59 8.58 1.5 22.65 9.59 8.67 2 22.63 9.59 8.68 2.5 22.63 9.59 8.82 3.1 22.61 9.59 8.89 3.6 22.55 9.31 7.69 4 ------- 10/25/1995 STORET 493713(01) Temp PH DO Depth 9.4 9.2 7.4 0.1 9.4 9.2 7.3 0.5 9.4 9.2 7.3 1 9.4 9.2 7.2 1.5 9.4 9.2 7.3 2 9.5 9.3 7.4 2.5 9.4 9.2 7.2 3 9.4 9.2 7.2 3.5 9.5 9.2 7.1 3.8 STORET 493714(02) Temp PH DO Depth 9.6 9.2 7.4 0.1 9.6 9.2 7.3 0.5 9.6 9.2 73 1 9.6 9.2 7.3 1.5 9.6 9.2 7.3 2 9.6 9.2 7.3 2.5 9.6 9.2 7.1 3 9.6 9.2 7.1 3.5 9.6 9.2 7 3.7 STORET 493716 (03) Temp PH DO Depth 9.5 9.2 8.3 0.1 9.5 9.1 7.6 0.5 9.5 9.2 7.4 1 9.5 9.2 7.3 1.5 9.5 9.2 7.6 2 STORET 493715 (04) Temp PH DO Depth 8.2 9 8.8 0.1 8.3 9 8.1 0.5 8.1 9 8.2 1 8 9 8.2 1.5 8 8.9 8.2 2 8 9 8.2 2.5 8.1 9 8.2 3 8 8.9 8.1 3.6 ------- 11/15/1995 STORET 493713(01) Temp PH DO Depth 6.1 8.4 9.2 0.2 6.1 8.4 9 0.5 6.1 84 8.9 1 6.1 8.4 8.9 1.5 6.1 8.4 8.9 2 6 8.4 8.9 2.5 6 8.4 8.9 3 6 84 8.8 3.5 6 8.4 8.8 4.1 STORET 493714(02) Temp PH DO Depth 6.2 8.4 9 0.2 6.2 8.4 8.9 0.6 6.1 8.4 8.9 1 6.1 8.4 8.9 1.5 6.1 8.4 8.8 2 6.1 84 8.8 2.5 6.1 8.4 8.8 3 6.1 8.4 8.8 3.5 6.1 8.4 8.8 4.3 STORET 493716 (03) Temp PH DO Depth 6.4 8.8 8.8 0.1 6.4 8.3 8.8 0.5 6.4 8.3 8.8 1 6.4 8.3 8.8 1.5 6.3 8.3 8.7 2 6.3 8.3 8.7 2.4 STORET 493715(04) Temp PH DO Depth 5.6 8.3 9.1 0.1 5.6 8.3 9.1 0.5 5.6 8.3 9.1 1 5.7 8.3 9.1 1.5 5.7 8.3 9.1 2 5.8 8.3 9 2.5 5.9 8.3 8.6 3 5.9 8.3 8.5 3.5 5.9 8.3 8.4 3.8 ------- Appendix B Lake Water Quality Data ------- Division of Water Quality 11/22/96 13:14 ADH Page: 17 Lab Analysis Results Inquiry Storet: 493713 04 County: 24 PELICM! IAKE 01 W MIDLAKE Date Time Lab No Samp Type F-Tenp F-pH F-D.O. F-Sp.Cond. Transp. Depth Peg C mg/1 umhos/an m m 03/10/95 1149 C9502378 21 8.4 8.1 70.0 561 4.0 0 03/10/95 1150 C9502379 29 7.5 8.0 6.0 559 4.0 04/25/95 0911 C9503992 21 11.8 8.4 9.2 556 4.35 0 04/25/95 0913 C9503993 25 11.7 8.4 11.1 556 2.5 04/25/95 0915 C9503994 29 11.7 8.4 11.8 557 4.5 05/10/95 0842 C9504538 21 14.4 8.4 8.5 518 4.2 0 05/10/95 0846 C9504539 25 14.4 8.4 8.6 514 2.0 05/10/95 0848 C9504540 29 14.4 8.5 8.6 516 4.0 05/24/95 0831 C9505182 21 16.7 8.7 8.1 547 4.2 0 05/24/95 0833 C9505183 25 16.7 8.7 7.8 549 2.0 05/24/95 0835 C9505184 29 16.8 8.7 7.8 552 4.0 06/07/95 0831 C9505609 21 17.5 8.8 7.2 519 3.1 0 06/07/95 0834 C9505610 25 17.5 8.8 7.2 522 2.5 06/07/95 0836 C9505611 29 17.5 8.8 7.2 520 4.1 06/21/95 0835 C9506293 21 19.3 8.7 8.5 521 3.6 0 06/21/95 0836 C9506294 25 19.2 8. B 8.7 526 2.0 06/21/95 0837 C9506295 29 19.2 8.8 8.7 520 4.2 07/13/95 0830 C9507230 21 19.5 8.5 11.0 492 3.7 0 07/13/95 0831 C9507231 25 23.5 8.4 8.0 492 2.0 07/13/95 0832 C9507232 29 23.5 8.4 7.6 497 4.0 07/19/95 0811 C9507673 25 23.7 9.4 11.1 495 2.0 07/19/95 0811 C9507674 29 23.7 9.4 11.1 496 4.2 08/01/95 1029 C9508164 21 23.0 9.3 9.3 462 3.2 0 08/01/95 1030 C9508165 25 23.0 9.3 9.2 462 2.0 08/01/95 1032 C9508166 29 22.7 9.4 6.7 462 4.0 08/15/95 1021 C9508755 21 23.2 9.6 8.2 487 3.9 0.2 08/15/95 1021 C9508756 25 22.9 9.6 8.4 485 2.0 08/15/95 1021 C9508757 29 22.9 9.7 9.0 487 4.0 08/24/95 0844 C9509141 21 24.2 9.7 10.2 479 3.3 0 08/24/95 0844 C9509142 25 24.2 9.7 10.1 486 2.0 08/24/95 0844 C9509143 29 24.2 9.7 9.4 484 4.0 08/24/95 0912 C9509147 21 24.5 9.6 9.4 481 2.2 0 09/06/95 0740 C9509684 21 23.1 9.6 8.4 486 3.7 0.2 09/06/95 0740 C9509685 25 23.2 9.6 7.7 489 1.5 09/06/95 0740 C9509686 29 23.2 9.6 7.5 489 3.5 09/20/95 0950 C9510222 21 20.3 9.5 7.7 441 3.2 0.2 09/20/95 0951 C9510223 25 20.3 9.7 7.4 444 1.8 09/20/95 0957 C9510224 29 20.4 9.7 7.2 443 3.6 10/25/95 C9511222 25 9.4 8.9 7.6 471 2.0 10/25/95 0955 C9511221 21 9.4 8.8 7.8 467 3.1 0 10/25/95 0958 C9511223 29 9.5 8.9 7.4 466 3.8 11/15/95 0940 C9511798 21 6.1 8.4 9.2 540 1.4 0.2 11/15/95 0942 C9511799 25 6.1 8.4 8.9 543 2.0 11/15/95 0945 C9511800 29 6.0 8.4 8.8 534 4.1 02/07/96 1014 C9600994 21 3.2 8.3 10.6 579 2.6 0 ------- 11/22/96 13:14 Division of Water Quality Lab Analysis Results Inquiry ADH Page: 18 Storet: 493713 04 County: 24 PELICAN LAKE 01 W MIDLAKE 02/07/96 1015 C9600995 25 4.0 8.3 8.6 597 2.5 02/07/96 1017 C9600996 29 5.0 7.8 2.3 627 4.2 03/20/96 0929 C9601945 21 8.0 8.5 10.1 616 4.5 0 03/20/96 0930 C9601946 25 7.9 8.5 9.5 621 2.8 03/20/96 0932 C9601947 29 7.9 8.5 9.5 620 4.4 04/05/96 1011 C9602225 21 10.0 8.5 10.0 611 4.0 0 04/05/96 1013 C9602226 29 9.6 8.5 9.4 618 4.3 04/17/96 0954 C9602614 21 12.0 8.52 10.1 614 4.2 0 04/17/96 0955 C9602615 25 12.1 8.5 9.6 615 2.5 04/17/96 0957 C9602616 29 12.1 8.4 9.6 620 4.2 05/01/96 0931 C9603075 21 12.6 8.4 7.5 621 3.4 0 05/01/96 0932 C9603076 25 12.4 8.4 7.6 621 2.0 05/01/96 0934 C9603077 29 12.4 8.4 7.6 622 4.4 05/29/96 0958 C9604021 21 16.8 8.7 9.5 611 4.2 0 05/29/96 1000 C9604022 25 16.6 8.7 8.7 610 2.0 05/29/96 1002 C9604023 29 16.6 8.8 8.8 612 4.2 06/12/96 0942 C9604675 21 22.3 9.0 10.9 610 3.8 0 06/12/96 0943 C9604676 25 22.0 9.0 10.8 613 2.0 06/12/96 0944 C9604677 29 22.0 9.0 11.0 612 3.6 07/10/96 1035 C9605865 21 24.2 9.6 12.9 570 3.3 0 07/10/96 1037 C9605866 25 24.0 9.6 13.7 571 1.5 07/10/96 1047 C9605867 29 23.8 9.5 7.5 591 08/06/96 1259 C9606924 04 22.9 10.1 9.0 585 2.85 0 08/06/96 1301 C9606925 29 22.4 10.1 9.4 585 2.4 09/16/96 1329 C9608502 21 19.4 9.9 8.3 605 1.8 0 09/16/96 1330 C9608503 29 19.5 9.9 8.3 604 1.6 Averages 16.6 8.9 9.7 543 3.4 2.0 Date Time Flow, cfs T.Sus.Sol T.K.N. Sulfide Ammonia N D-Arsenic D-Barium D-Cadmium mg/1 mq/1 mq/l mg/1 uq/l uq/l uq/l 03/10/95 1149 7.0 <0.05 03/10/95 1150 <0.05 <5.0 110.0 <1.0 04/25/95 0911 <4.0 0.58 <0.05 04/25/95 0913 0.67 <0.05 04/25/95 0915 0.75 0.05 05/10/95 0842 <4.0 0.37 <0.05 05/10/95 0846 0.53 <0.05 05/10/95 0848 0.71 <0.05 05/24/95 0831 <4.0 0.56 <0.05 05/24/95 0833 0.56 <0.05 05/24/95 0835 0.43 <0.05 06/07/95 0831 <4.0 0.87 0.06 06/07/95 0834 0.58 0.06 06/07/95 0836 0.54 0.06 ------- 11/22/96 13:14 Division of Water Quality Lab Analysis Results Inquiry ADH Page: 19 Storet: 493713 04 County: 24 PELICAN LAKE 01 W MIDLAKE 06/21/95 0835 <4.0 0.34 <0.05 06/21/95 0836 0.48 <0.05 06/21/95 0837 0.5 <0.05 07/13/95 0830 <4.0 0.47 <0.05 07/13/95 0831 0.66 <0.05 07/13/95 0832 0.47 <0.05 07/19/95 0811 0.75 <0.05 07/19/95 0811 0.83 <0.05 08/01/95 1029 <4.0 0.48 0.054 08/01/95 1030 0.14 0.065 08/01/95 1032 0.65 0.061 08/15/95 1021 <4.0 0.96 <0.05 08/15/95 1021 0.64 <0.05 08/15/95 1021 0.75 <0.05 08/24/95 0844 <4.0 0.7 <0.05 08/24/95 0844 0.65 <0.05 08/24/95 0844 0.68 0.052 08/24/95 0912 <4.0 0.57 <0.05 09/06/95 0740 <4.0 <0.05 09/06/95 0740 0.75 <0.05 09/06/95 0740 1.0 <0.05 09/20/95 0950 <4.0 1.0 0.068 09/20/95 0951 0.73 0.051 09/20/95 0957 0.89 0.05 10/25/95 0.53 <0.05 10/25/95 0955 <4.0 0.33 <0.05 10/25/95 0958 0.94 0.057 11/15/95 0940 <4.0 0.5 0.064 11/15/95 0942 0.57 0.072 11/15/95 0945 0.48 0.098 02/07/96 1014 <4.0 L0 0.069 02/07/96 1015 L0 0.061 02/07/96 1017 L0 <0.07 0.097 03/20/96 0929 <4.0 0.7 0.073 03/20/96 0930 0.89 0.075 03/20/96 0932 0.93 0.074 04/05/96 1011 <4.0 1.12 0.068 04/05/96 1013 0.66 0.062 04/17/96 0954 <4.0 NO 0.059 04/17/96 0955 NO 0.069 04/17/96 0957 NO 0.064 05/01/96 0931 <4.0 0.634 <0.05 05/01/96 0932 0.974 <0.05 05/01/96 0934 0.744 <0.05 05/29/96 0958 <4.0 0.729 <0.05 05/29/96 1000 0.729 <0.05 05/29/96 1002 0.879 0.2 06/12/96 0942 <4.0 0.694 <0.05 06/12/96 0943 0.874 <0.05 <1.0 <5.0 61.0 <1.0 <5.0 77.0 <1.0 <5.0 120.0 <1.0 <5.0 108.0 <1.0 <5.0 112.0 <1.0 <5.0 99.0 <1.0 ------- Division of Water &jality 11/22/96 13:14 ADH Page: 20 Lab Analysis Results Inquiry Storet: 493713 04 County: 24 PELICAN LAKE 01 W MIDLAKE 06/12/96 0944 0.724 <0.05 <5.0 81.0 <1.0 07/10/96 1035 <4.0 0.646 <0.05 07/10/96 1037 1.016 <0.05 07/10/96 1047 0.986 <0.05 <5.0 45.0 <1.0 08/06/96 1259 <4.0 0.855 <0.05 08/06/96 1301 0.745 <0.05 <5.0 52.0 <1.0 09/16/96 1329 <4.0 0.637 <0.05 09/16/96 1330 0.557 <0.05 <5.0 43.0 <1.0 Averages <4.12 0.62 <0.070 <0.05B <5.0 82.5 <1.0 Date Time D-Calcium D-Chrcmium D-Copper D-Inon D-Lead D-Magnesum D-Mangan D-Potassum mg/l ucj/1 1 M 1 ug/1 ug/1 mg/l uq/1 mq/1 03/10/95 1149 03/10/95 1150 <5.0 <12.0 <20.0 <3.0 16.0 04/25/95 0911 42 32 3.7 04/25/95 0913 04/25/95 0915 05/10/95 0842 39 33 4 05/10/95 0846 05/10/95 0848 05/24/95 0831 35 32 3.5 05/24/95 0833 05/24/95 0835 06/07/95 0831 34 33 3.6 06/07/95 0834 06/07/95 0836 06/21/95 0835 32 33 06/21/95 0836 06/21/95 0837 07/13/95 0830 24 34 3.3 07/13/95 0831 07/13/95 0832 07/19/95 0811 07/19/95 0811 08/01/95 1029 19 30 2.8 08/01/95 1030 08/01/95 1032 08/15/95 1021 16 32 3.1 08/15/95 1021 08/15/95 1021 08/24/95 0844 15 32 3 08/24/95 0844 08/24/95 0844 08/24/95 0912 15 33 3.2 ------- Division of Water Quality 11/22/96 13:14 ™ Pa9e: Lab Analysis Results Inquiry storet: 493713 04 County: 24 PELICAN LAKE 01 W MIDLAKE 09/06/95 0740 15 33 3.2 09/06/95 0740 09/06/95 0740 09/20/95 0950 16 33 3.3 09/20/95 0951 09/20/95 0957 10/25/95 10/25/95 0955 21 33 3.5 10/25/95 0958 23 <5.0 <12.0 28.0 <3.0 33 5.4 11/15/95 0940 27 33 3.6 11/15/95 0942 11/15/95 0945 28 <5.0 <12.0 <20.0 <3.0 32 <5.0 02/07/96 1014 36 36 4 02/07/96 1015 02/07/96 1017 43 <5.0 <12.0 26.0 <3.0 35 88.0 03/20/96 0929 34.9 33.9 3.9 03/20/96 0930 03/20/96 0932 38.2 <5.0 <12.0 <20.0 <3.0 33.1 7.2 04/05/96 1011 35.6 32.5 5.4 04/05/96 1013 37.5 <5.0 <12.0 21.9 <3.0 32.7 9.1 04/17/96 0954 37.6 34.8 4.2 04/17/96 0955 04/17/96 0957 05/01/96 0931 39.3 35.5 4.2 05/01/96 0932 05/01/96 0934 05/29/96 0958 35.7 35.9 3.88 05/29/96 1000 05/29/96 1002 38 <5.0 <12.0 <20.0 <3.0 37.2 <5.0 06/12/96 0942 30.2 35.6 3 06/12/96 0943 06/12/96 0944 30.3 <5.0 <12.0 <20.0 <3.0 35.5 <5.0 07/10/96 1035 17.3 38.1 3.6 07/10/96 1037 07/10/96 1047 18 <5.0 <12.0 <20.0 <3.0 38.4 <5.0 08/06/96 1259 14.9 39 08/06/96 1301 14.7 <5.0 <12.0 <20 .0 <3.0 38.9 <5.0 09/16/96 1329 12.1 32.7 4.3 09/16/96 1330 12.2 <5.0 <12.0 <20 .0 <3.0 33 <5.0 Averages 27 <5.0 <12.0 <21.4 <3.0 34 <14.2 4 Date Time D-Selenium D-Silver D-Sodium D-Zinc Bicartanate Carb. Diox Carbonate SI02 uq/1 uq/1 mq/1 ug/1 mq/1 mq/1 mq/1 mq/1 03/10/95 1149 ------- Division of Water Quality 11/22/96 13:14 SDH Page: 22 Lab Analysis Results Inquiry Storet: 493713 04 County: 24 PELICAN LAKE 01 W MIDLAKE <30.0 11.5 10.2 8.1 7.0 4.3 4.0 03/10/95 1150 <1.0 <2.0 04/25/95 0911 35.0 04/25/95 0913 04/25/95 0915 05/10/95 0842 36.0 05/10/95 0846 05/10/95 0848 05/24/95 0831 36.0 05/24/95 0833 05/24/95 0835 06/07/95 0831 37.0 06/07/95 0834 06/07/95 0836 06/21/95 0835 38.0 06/21/95 0836 06/21/95 0837 07/13/95 0830 39.0 07/13/95 0831 07/13/95 0832 07/19/95 0811 07/19/95 0811 08/01/95 1029 34.0 08/01/95 1030 08/01/95 1032 08/15/95 1021 38.0 08/15/95 1021 08/15/95 1021 08/24/95 0844 39.0 08/24/95 0844 08/24/95 0844 08/24/95 0912 39.0 09/06/95 0740 40.0 09/06/95 0740 09/06/95 0740 09/20/95 0950 40.0 09/20/95 0951 09/20/95 0957 10/25/95 10/25/95 0955 41.0 10/25/95 0958 <1.0 <2.0 11/15/95 0940 39.0 11/15/95 0942 11/15/95 0945 <1.0 <2.0 02/07/96 1014 42.0 02/07/96 1015 02/07/96 1017 <1.0 <2.0 03/20/96 0929 40.3 03/20/96 0930 03/20/96 0932 <1.0 <2.0 <30.0 <30.0 <30.0 <30.0 6.0 6.0 6.0 7.0 8.3 148 0 10.0 9.0 200 2 0 9.0 242 2 0 6.0 240 2 0 4.0 ------- Division of Water Quality 11/22/96 13:14 ADH Page: 23 Lab Analysis Results Inquiry Storet: 493713 04 County: 24 PELICAN LAKE 01 W MIDLAKE 04/05/96 1011 35.5 236 2 0 4.0 04/05/96 1013 <1.0 <2.0 <30.0 04/17/96 0954 42.0 244 2 0 3.0 04/17/96 0955 04/17/96 0957 05/01/96 0931 44.1 252 2 0 3.0 05/01/96 0932 05/01/96 0934 05/29/96 0958 46.1 246 1 0 3.1 05/29/96 1000 05/29/96 1002 <1.0 <2.0 <30.0 06/12/96 0942 45.8 232 1 0 3.0 06/12/96 0943 06/12/96 0944 <1.0 <2.0 <30.0 07/10/96 1035 51.8 197 0 0 4.0 07/10/96 1037 07/10/96 1047 <1.0 <2.0 <30.0 08/06/96 1259 187 0 0 7.0 08/06/96 1301 <1.0 <2.0 <30.0 09/16/96 1329 59.5 160 0 0 10 .0 09/16/96 1330 <1.0 <2.0 <30.0 Averages <1.0 <2.0 40.8 <30.0 215 1 0.83 6.24 Date Time Sulfate T. Phos. Tot. Alk. T. Hardns. Tuzbidity L-Sp. Cond TDS G S 180C T Vol Sol mg/1 mq/1 mq/1 mq/1 NTU umhos/cm mg/1 mg/1 03/10/95 1149 0.016 2 03/10/95 1150 0.014 04/25/95 0911 104.58 0.016 174 236.5 356 1 04/25/95 0913 0.013 04/25/95 0915 0.03 05/10/95 0842 117.46 0.017 180 233.1 346 1 05/10/95 0846 0.015 05/10/95 0848 0.015 05/24/95 0831 99.71 0.019 174 219.0 338 1 05/24/95 0833 0.015 05/24/95 0835 0.016 06/07/95 0831 111.71 0.02 172 220.6 334 2 06/07/95 0834 0.01 06/07/95 0836 0.01 06/21/95 0835 93.19 0.01 164 215.6 324 2 06/21/95 0836 0.01 06/21/95 0837 0.01 07/13/95 0830 104.27 0.01 148 199.8 308 1 07/13/95 0831 0.01 ------- Division of Water CMality 11/22/96 13:14 ADH Page: Lab Analysis Results Inquiry Storet: 493713 04 County: 24 PELICAN LAKE 01 W MIDLAKE 07/13/95 0832 0.01 07/19/95 0811 0.01 07/19/95 0811 0.01 08/01/95 1029 106.97 <0.01 126 170.8 286 08/01/95 1030 0.01 08/01/95 1032 <0.01 08/15/95 1021 89.0 0.01 129 171.6 308 08/15/95 1021 <0.01 08/15/95 1021 0.01 08/24/95 0844 89.0 0.01 124 169.1 290 08/24/95 0844 0.01 08/24/95 0844 0.01 08/24/95 0912 92.0 <0.01 123 173.2 288 09/06/95 0740 104.0 0.01 125 173.2 0.38 310 09/06/95 0740 0.02 09/06/95 0740 0.04 09/20/95 0950 101.0 0.01 127 175.7 304 09/20/95 0951 0.01 09/20/95 0957 0.01 10/25/95 0.04 10/25/95 0955 120.83 0.01 138 188.2 320 10/25/95 0958 0.02 193.2 11/15/95 0940 120.3 H o o 164 203.1 334 11/15/95 0942 0.03 11/15/95 0945 0.03 201.5 02/07/96 1014 60.0 0.01 198 237.9 366 02/07/96 1015 0.01 02/07/96 1017 0.03 251.3 03/20/96 0929 109.7 0.02 197 226.6 348 03/20/96 0930 0.02 03/20/96 0932 0.02 231.5 04/05/96 1011 113.7 H o o 194 222.5 370 04/05/96 1013 0.01 228.1 04/17/96 0954 142.5 0.02 200 237.0 358 04/17/96 0955 0.02 04/17/96 0957 0.02 05/01/96 0931 125.2 0.01 207 244.1 380 05/01/96 0932 0.01 05/01/96 0934 0.02 05/29/96 0958 127.1 0.02 202 236.8 384 05/29/96 1000 0.01 05/29/96 1002 0.02 247.9 06/12/96 0942 120.2 0.01 190 221.8 378 06/12/96 0943 0.02 06/12/96 0944 0.02 221.7 07/10/96 1035 138.4 0.02 162 199.9 362 07/10/96 1037 0.02 07/10/96 1047 0.02 202.9 08/06/96 1259 154.8 0.026 154 197.6 364 24 2 1 2 2 2 5 4 4 0 0 1 3 0 0 1 NO NO ------- Division of Water Quality 11/22/96 13:14 ADH Page: 25 Lab Analysis Results Inquiry Storet: 493713 04 County: 24 PELICAN LAKE 01 VI MIDLAXE 08/06/96 1301 0.023 196.7 09/16/96 1329 139.7 0.01 132 164.7 364 <9 09/16/96 1330 0.01 166.2 Averages 111.89 <0.016 163 208.2 0.38 338 < 2 Date Time Chlor-A D-Aluminum RSS D-N02+N03 UCf/1 uq/1 mg/1 mq/1 uq/1 mcr/1 03/10/95 1149 0 5 <0.02 <0.01 03/10/95 1150 <30.0 <0.02 <0.2 0.01 04/25/95 0911 1.7 3 <0.02 <0.01 04/25/95 0913 <0.02 <0.01 04/25/95 0915 <0.02 <0.01 05/10/95 0842 1.1 3 <0.02 0.012 05/10/95 0846 <0.02 <0.01 05/10/95 0848 <0.02 0.012 05/24/95 0831 1.2 3 0.02 <0.01 05/24/95 0833 <0.02 <0.01 05/24/95 0835 <0.02 <0.01 06/07/95 0831 2.7 <3 <0.02 <0.01 06/07/95 0834 <0.02 <0.01 06/07/95 0836 <0.02 <0.01 06/21/95 0835 1.7 <3 0.03 0.01 06/21/95 0836 <0.02 <0.01 06/21/95 0837 <0.02 0.01 07/13/95 0830 2.3 ^ 3 <0.02 <0.01 07/13/95 0831 <0.02 <0.01 07/13/95 0832 V <0.02 <0.01 07/19/95 0811 <0.02 0.01 07/19/95 0811 <0.02 <0.01 08/01/95 1029 2.1 <3 <0.02 <0.01 08/01/95 1030 <0.02 <0.01 08/01/95 1032 <0.02 <0.01 08/15/95 1021 1.9 3 <0.02 <0.01 08/15/95 1021 <0.02 <0.01 08/15/95 1021 <0.02 <0.01 08/24/95 0844 2.4 <3 <0.02 <0.01 08/24/95 0844 <0.02 <0.01 08/24/95 0844 <0.02 <0.01 08/24/95 0912 2.3 <3 <0.02 0.01 09/06/95 0740 5.7 <3 0.02 0.01 09/06/95 0740 0.02 0.01 09/06/95 0740 0.03 0.01 09/20/95 0950 2.5 <3 <0.02 0.03 09/20/95 0951 <0.02 0.02 ------- Division of Water Qoality 11/22/96 13:14 ADH Page: 26 Lab Analysis Results Inquiry Storet: 493713 04 County: 24 PELICAN LAKE 01 W MIDLAKE 09/20/95 0957 <0.02 0.03 10/25/95 <0.02 0.01 10/25/95 0955 5.5 <3 0.08 0.02 10/25/95 0958 66.0 0.03 <0.2 0.02 11/15/95 0940 5.2 <3 <0.02 <0.01 11/15/95 0942 0.02 0.01 11/15/95 0945 <30.0 <0.02 <0.2 0.01 02/07/96 1014 0.2 4 0.02 <0.01 02/07/96 1015 <0.02 <0.01 02/07/96 1017 <30.0 0.07 <0.2 0.01 03/20/96 0929 4 <0.02 <0.01 03/20/96 0930 0.09 0.01 03/20/96 0932 <30.0 0.42 <0.2 0.01 04/05/96 1011 0.9 3 <0.02 0.01 04/05/96 1013 <30.0 0.25 <0.2 <0.01 04/17/96 0954 2.7 <3 0.02 0.01 04/17/96 0955 <0.02 0.01 04/17/96 0957 <0.02 0.01 05/01/96 0931 2.5 4 <0.02 0.01 05/01/96 0932 <0.02 0.01 05/01/96 0934 <0.02 0.01 05/29/96 0958 2.5 4 0.02 0.01 05/29/96 1000 <0.02 0.01 05/29/96 1002 <30.0 <0.02 <0.2 0.01 06/12/96 0942 1.1 3 0.03 <0.01 06/12/96 0943 <0.02 <0.01 06/12/96 0944 <30.0 <0.02 <0.2 <0.01 07/10/96 1035 0.9 4 <0.02 0.01 07/10/96 1037 <0.02 0.01 07/10/96 1047 <30.0 0.02 <0.2 0.01 08/06/96 1259 3.0 4 <0.02 0.01 08/06/96 1301 <30.0 <0.02 <0.2 0.01 09/16/96 1329 0.9 <3 <0.02 0.01 09/16/96 1330 <30.0 0.1 <0.2 0.01 Averages 2.2 <33.3 < 3 <0.03 <0.2 <0.011 ------- Division of Water Quality 11/22/96 13:14 ADH Page: 27 Lab Analysis Results Inquiry Storet: 493714 04 County: 24 PELICAN LAKE 02 E MIDLAKE Date Time Lab No Sairp Type F-Tenp Deg C F-pH F-D.O. mq/1 F-Sp.Cand. unihos/an Transp. m Depth m 02/09/95 1615 C9501377 21 0 03/10/95 1203 C9502380 21 8.9 8.1 7.6 549 4.1 0 03/10/95 1204 C9502389 29 7.4 8.1 6.8 552 4.2 04/25/95 0920 C9503989 21 12.2 8.5 8.8 554 4.6 0 04/25/95 0922 C9503990 25 12.1 8.5 9.1 556 2.5 04/25/95 0923 C9503991 29 11.9 8.4 8.7 554 4.5 05/10/95 C9504541 21 14 .4 8.4 8.9 516 4.5 0 05/10/95 C9504542 25 14.4 8.5 10.3 517 2.0 05/10/95 C9504543 29 14.0 8.5 10.4 514 4.0 05/24/95 0842 C9505185 21 IS.8 8.6 7.8 546 3.75 0 05/24/95 0844 C9505186 25 16.9 8.7 7.7 550 2.0 05/24/95 0846 C9505187 29 16.9 8.7 7.6 547 4.3 06/07/95 0842 C9505612 21 17.6 8.8 7.1 520 3.3 0 06/07/95 0844 C9505613 25 17.5 8.8 7.1 522 2.0 06/07/95 0846 C9505614 29 17.5 8.8 7.1 522 4.1 06/21/95 0843 C9506296 21 19.2 8.8 9.0 523 3.95 0 06/21/95 0844 C9506297 25 19.2 8.8 9.0 520 2.1 06/21/95 0846 C9506298 29 19.1 8.8 7.5 534 4.4 07/13/95 0837 C9507233 21 19.7 8.9 10.6 497 4.0 0 07/13/95 0839 C9507235 29 23.8 8.3 6.7 511 4.2 07/13/95 0858 C9507234 25 23.8 8.3 8.3 497 2.0 07/19/95 0822 C9507675 21 24.0 9.4 10.7 496 3.8 0 07/19/95 0822 C9507676 25 24.0 9.4 10.8 497 2.0 07/19/95 0822 C9507677 29 24.0 9.3 10.6 498 4.0 08/01/95 1039 C9508167 21 23.5 9.5 10.0 487 3.2 0 08/01/95 1040 C9508168 25 23.3 9.5 10.0 491 08/01/95 1041 C9508169 29 23.2 9.5 10.1 493 4.1 08/15/95 1032 C9508758 21 23.5 7.6 6.7 488 4.1 0.2 08/15/95 1032 C9508759 25 23 .2 9.6 6.6 489 2.0 08/15/95 1032 C9508760 29 23.1 9.6 6.8 488 4.0 08/24/95 0900 C9509144 21 24.3 9.6 8.6 481 4.0 0.2 08/24/95 0900 C9509145 25 24.3 9.6 8.7 482 2.0 08/24/95 0900 C9509146 29 24.3 9.6 8.5 482 4.0 09/06/95 0745 C9509687 21 23.5 9.6 7.8 482 0.2 09/06/95 0754 C9509688 25 23.5 9.6 7.7 484 1.5 09/06/95 0754 C9509689 29 23.5 7.6 7.6 483 3.5 09/20/95 1004 C9510225 21 20.4 9.6 8.1 441 3.0 0.2 09/20/95 1006 C9510226 25 20.4 9.8 8.3 442 1.8 09/20/95 1009 C9510227 29 20.5 9.8 8.2 441 3.5 10/25/95 1015 C9511225 21 9.6 8.8 7.8 471 2.1 0 10/25/95 1016 C9511226 25 9.63 8.8 7.5 474 2.0 10/25/95 1018 C9511227 29 9.6 8.8 7.4 172 3.9 11/15/95 0958 C9511801 21 6.2 8.4 9.0 535 1.3 0.2 11/15/95 1000 C9511802 25 6.1 8.4 8.8 535 2.0 11/15/95 1001 C9S11803 29 6.1 8.4 8.8 535 4.3 ------- Division of Water Quality 11/22/96 13:14 ADH Page: 28 Lab Analysis Results Inquiry storet: 493714 04 County: 24 PELICAN LAKE 02 E MIDLAKE 02/07/96 1050 C9600997 21 3.2 8.2 9.9 564 4.5 0 02/07/96 1052 C9600998 25 3.8 8.2 8.2 598 1.9 02/07/96 1053 C9600999 29 4.8 7.9 1.9 616 4.2 03/20/96 0941 C9601948 21 8.3 8.4 9.5 625 5.0 0 03/20/96 0942 C9601949 25 8.1 8.4 9.4 622 2.5 03/20/96 0944 C9601950 29 7.9 8.4 9.3 623 5.0 04/05/96 1013 C9602227 21 10.0 8.5 9.8 619 4.1 0 04/05/96 1024 C9602228 29 9.9 8.5 9.4 617 4.1 04/17/96 1007 C9602617 21 12.2 8.4 9.8 613 4.5 0 04/17/96 1008 C9602618 25 12.1 8.5 9.6 617 2.5 04/17/96 1009 C9602619 29 12.1 8.5 9.6 616 4.5 05/01/96 C9603080 29 12.6 B.4 7.6 623 4.3 05/01/96 0943 C9603078 21 13.2 8.4 7.8 619 2.6 0 05/01/96 0945 C9603079 25 12.6 8.4 7.7 621 7.0 05/29/96 1010 C9604024 21 16.9 8.8 8.4 610 4.3 0 05/29/96 1011 C9604025 25 16.6 8.8 8.5 612 2.0 05/29/96 1012 C9604026 29 16.6 8.8 8.8 614 3.9 06/12/96 0958 C9604678 21 22.7 9.0 10.4 608 4.0 0.1 06/12/96 0959 C9604679 25 22.4 9.0 10.6 612 2.0 06/12/96 1001 C9604680 29 22.2 8.7 6.1 634 4.0 07/10/96 1058 C9605868 21 24.4 9.4 10.0 573 3.4 0 07/10/96 1100 C9605869 25 24.2 9.4 10.2 576 1.4 07/10/96 1104 C9605870 29 24.1 9.5 10.4 576 3.4 08/06/96 1314 C9606926 21 22.6 9.9 7.7 577 3.05 0 08/06/96 1316 C9606927 29 22.5 9.9 8.0 577 2.5 09/16/96 1336 C9608504 21 19.5 9.8 8.1 592 1.7 0 09/16/96 1337 C9608505 29 19.5 9.8 8.0 592 1.7 Averages 16.5 8.9 8.5 540 3.6 2.0 Date Time Flow, cfs T.Sus.Sol T.K.N. Sulfide Aitmonia N D-Arsenic D-Barium D-Cadmium raq/1 nw/1 mq/l mq/1 uq/1 uq/1 uq/1 02/09/95 1615 7.0 0.4 <0.07 <0.05 03/10/95 1203 <3.0 <0.05 03/10/95 1204 <0.05 <5.0 110.0 <1.0 04/25/95 0920 7.0 0.34 <0.05 04/25/95 0922 0.38 <0.05 04/25/95 0923 0.67 <0.05 05/10/95 <4.0 0.54 <0.05 05/10/95 0.63 <0.05 05/10/95 0.69 <0.05 05/24/95 0842 <4.0 0.42 <0.05 05/24/95 0844 <0.1 <0.05 05/24/95 0846 1.66 <0.05 06/07/95 0842 <4.0 0.64 0.06 ------- 11/22/96 13:14 Division of Water Quality Lab Analysis Results Inquiry ADH Page: 29 storet: 493714 04 County: 24 PELICAN LAKE 02 E MIDLAKE 06/07/95 0844 0.59 0.06 06/07/95 0846 0.55 0.06 06/21/95 0843 <4.0 0.44 <0.05 06/21/95 0844 0.56 <0.05 06/21/95 0846 0.53 <0.05 07/13/95 0837 <4.0 0.64 <0.05 07/13/95 0839 0.66 <0.05 07/13/95 0858 0.56 <0.05 07/19/95 0822 <4.0 0.68 <0.05 07/19/95 0822 0.53 <0.05 07/19/95 0822 0.49 <0.05 08/01/95 1039 <4.0 0.75 0.067 08/01/95 1040 0.82 0.051 08/01/95 1041 0.75 0.142 08/15/95 1032 <4.0 0.68 <0.05 08/15/95 1032 0.83 <0.05 08/15/95 1032 0.93 0.05 08/24/95 0900 <4.0 0.6 0.067 08/24/95 0900 0.66 0.063 08/24/95 0900 0.86 0.055 09/06/95 0745 <4.0 0.71 <0.05 09/06/95 0754 0.82 <0.05 09/06/95 0754 0.5 <0.05 09/20/95 1004 <4.0 0.84 0.05 09/20/95 1006 0.8 0.05 09/20/95 1009 1.14 0.05 10/25/95 1015 <4.0 0.46 0.05 10/25/95 1016 1.25 <0.05 10/25/95 1018 1.01 <0.05 11/15/95 0958 <4.0 0.62 0.11 11/15/95 1000 0.32 0.087 11/15/95 1001 0.77 0.108 02/07/96 1050 <4.0 L0 0.071 02/07/96 1052 L0 0.061 02/07/96 1053 LO <0.07 0.111 03/20/96 0941 <4.0 0.86 0.072 03/20/96 0942 1.21 0.071 03/20/96 0944 0.52 0.081 04/05/96 1013 <4.0 0.83 0.058 04/05/96 1024 0.93 0.055 04/17/96 1007 <4.0 NO 0.061 04/17/96 1008 NO 0.065 04/17/96 1009 NO 0.064 05/01/96 1.104 <0.05 05/01/96 0943 <4.0 0.914 <0.05 05/01/96 0945 1.129 <0.05 05/29/96 1010 <4.0 0.859 0.073 05/29/96 1011 0.709 0.066 05/29/96 1012 0.909 0.063 <5.0 63.0 <1.0 <5.0 120.0 <5.0 108.0 <5.0 113.0 <1.0 <1.0 <1.0 <5.0 100.0 <1.0 ------- Division of Water Quality 11/22/96 13:14 ADH Page: 30 Lab Analysis Results Inquiry storet: 493714 04 County: 24 PELICAN LAKE 02 E MIDLAKE 06/12/96 0958 <4.0 0.624 <0.05 06/12/96 0959 0.824 <0.05 06/12/96 1001 0.874 0.05 <5.0 80.0 <1.0 07/10/96 1058 <4.0 0.746 <0.05 07/10/96 1100 0.766 <0.05 07/10/96 1104 0.429 <0.05 <5.0 53.0 <1.0 08/06/96 1314 <4.0 0.905 <0.05 08/06/96 1316 0.855 <0.05 <5.0 49.0 <1.0 09/16/96 1336 <4.0 0.617 <0.05 09/16/96 1337 0.937 <0.05 Averages <4.19 <0.66 <0.070 <0.058 <5.0 88.4 <1.0 Date Time D-Calcium D-Chromium D-Copper D-Iron D-Lead D-Magnesum D-Mangan D-Potassum mq/1 ug/1 ug/1 uq/1 ug/1 mg/1 ug/1 mq/1 02/09/95 1615 31 13 1.2 03/10/95 1203 03/10/95 1204 <5.0 <12.0 <20.0 <3.0 13.0 04/25/95 0920 42 33 3.8 04/25/95 0922 04/25/95 0923 05/10/95 39 34 4 05/10/95 05/10/95 05/24/95 0842 35 32 3.5 05/24/95 0844 05/24/95 0846 06/07/95 0842 34 33 3.6 06/07/95 0844 06/07/95 0846 06/21/95 0843 31 33 3.5 06/21/95 0844 06/21/95 0846 07/13/95 0837 24 34 3.4 07/13/95 0839 07/13/95 0858 07/19/95 0822 22 33 3.3 07/19/95 0822 07/19/95 0822 08/01/95 1039 17 33 3 08/01/95 1040 08/01/95 1041 08/15/95 1032 16 33 3.1 08/15/95 1032 08/15/95 1032 ------- Division of Water Quality 11/22/96 13:14 MM Page: 31 Lab Analysis Results Inquiry Storet: 493714 04 County: 24 PELICAN LAKE 02 E MXDIAKE 08/24/95 0900 15 33 3 08/24/95 0900 08/24/95 0900 09/06/95 0745 14 33 3.2 09/06/95 0754 09/06/95 0754 09/20/95 1004 15 33 3.3 09/20/95 1006 09/20/95 1009 10/25/95 1015 22 33 3.6 10/25/95 1016 10/25/95 1018 23 <5.0 <12.0 21.0 <3.0 32 <5.0 11/15/95 0958 26 33 3.6 11/15/95 1000 11/15/95 1001 02/07/96 1050 37 44 5.1 02/07/96 1052 02/07/96 1053 40 <5.0 <12.0 <20.0 <3.0 34 41.0 03/20/96 0941 35.2 34.2 3.9 03/20/96 0942 03/20/96 0944 38.2 <5.0 <12.0 <20. 0 <3.0 33.3 7.5 04/05/96 1013 35.2 32.9 5.19 04/05/96 1024 37.9 <5.0 <12.0 <20.0 <3.0 32.8 10.5 04/17/96 1007 38.1 35.3 4.3 04/17/96 1008 04/17/96 1009 05/01/96 05/01/96 0943 38.8 35.6 4.2 05/01/96 0945 05/29/96 1010 37.3 37.4 4.19 05/29/96 1011 05/29/96 1012 37 <5.0 <12.0 <20.0 <3.0 36 6.7 06/12/96 0958 29.4 35.5 3.1 06/12/96 0959 06/12/96 1001 29.3 <5.0 <12.0 36.3 <3.0 35.6 <5.0 07/10/96 1058 19.2 38 3.7 07/10/96 1100 07/10/96 1104 19 <5.0 <12.0 <20.0 <3.0 38 <5.0 08/06/96 1314 13.9 38 3.56 08/06/96 1316 13.8 <5.0 <12.0 <20.0 <3.0 38.1 <5.0 09/16/96 1336 10.3 31.4 4 09/16/96 1337 Averages 28 <5.0 <12.0 <21.9 <3.0 34 <11.0 4 ------- Division of Water Quality 11/22/96 13:14 ADH Page: 32 Lab Analysis Results Inquiry storet: 493714 04 County: 24 PELICAN LAKE 02 E MIDLAKE Date Time D-Selenium D-Silver D-Sodiura 1 lS |\ Iw ug/1 mci/1 02/09/95 1615 8.9 03/10/95 1203 03/10/95 1204 <1.0 <2.0 04/25/95 0920 35.0 04/25/95 0922 04/25/95 0923 05/10/95 36.0 05/10/95 05/10/95 05/24/95 0842 36.0 05/24/95 0844 05/24/95 0846 06/07/95 0842 37.0 06/07/95 0844 06/07/95 0846 06/21/95 0843 38.0 06/21/95 0844 06/21/95 0846 07/13/95 0837 39.0 07/13/95 0839 07/13/95 0858 07/19/95 0822 39.0 07/19/95 0822 07/19/95 0822 08/01/95 1039 39.0 08/01/95 1040 08/01/95 1041 08/15/95 1032 39.0 08/15/95 1032 08/15/95 1032 08/24/95 0900 39.0 08/24/95 0900 08/24/95 0900 09/06/95 0745 39.0 09/06/95 0754 09/06/95 0754 09/20/95 1004 40.0 09/20/95 1006 09/20/95 1009 10/25/95 1015 42.0 10/25/95 1016 10/25/95 1018 <1.0 <2.0 11/15/95 0958 39.0 11/15/95 1000 11/15/95 1001 D-Zinc Bicarfcnate Cart). Diax Carbonate uq/1 mq/1 mq/1 mq/1 SI02 mq/1 120 <30.0 <30.0 157 202 11.0 11.1 10.4 8.0 7.0 3.6 5.0 5.7 7.0 7.0 8.0 7.9 9.0 9.0 9.0 ------- Division of Water Qial ity 11/22/96 13:14 ADH Page: 33 Lab Analysis Results Inquiry Storet: 493714 04 County: 24 PELICAN LAKE 02 E MIDLAKE 02/07/96 1050 65.0 240 2 0 6.0 02/07/96 1052 02/07/96 1053 <1.0 <2.0 <30.0 03/20/96 0941 39.8 242 1 0 3.0 03/20/96 0942 03/20/96 0944 <1.0 <2.0 <30.0 04/05/96 1013 36.1 236 2 0 4.0 04/05/96 1024 <1.0 <2.0 <30.0 04/17/96 1007 42.5 246 2 0 3.0 04/17/96 1008 04/17/96 1009 05/01/96 05/01/96 0943 43.8 252 2 0 3.0 05/01/96 0945 05/29/96 1010 47.7 244 1 0 3.2 05/29/96 1011 05/29/96 1012 <1.0 <2.0 <30.0 06/12/96 0958 46.1 232 1 0 3.0 06/12/96 0959 06/12/96 1001 <1.0 <2.0 <30.0 07/10/96 1058 51.8 202 0 0 4.0 07/10/96 1100 07/10/96 1104 <1.0 <2.0 <30.0 08/06/96 1314 56.7 181 0 0 8.0 08/06/96 1316 <1.0 <2.0 <30.0 09/16/96 1336 59.4 148 0 0 6.0 09/16/96 1337 Averages <1.0 <2.0 41.4 <30.0 208 1 0.85 6.29 Date Time Sulfate T. Phos. Tot. Alk. T. Hardns. Turbidity L-Sp. Cond TDS « S 180C T Vol Sol mq/1 mq/1 mg/i mq/1 NTU umhos/an mg/1 mq/1 02/09/95 1615 43.154 0.014 98 130.8 11.0 253 200 03/10/95 1203 <0.01 1 03/10/95 1204 0.013 04/25/95 0920 105.49 <0.01 172 240.6 348 2 04/25/95 0922 <0.01 04/25/95 0923 0.022 05/10/95 117.17 0.026 179 237.2 342 1 05/10/95 0.024 05/10/95 0.021 05/24/95 0842 98.02 0.01 171 219 .0 334 1 05/24/95 0844 0.016 05/24/95 0846 0.014 06/07/95 0842 107.77 0.01 171 220.6 330 2 ------- Division of Water Quality 11/22/96 13:14 ADH Page: Lab Analysis Results Inquiry Storet: 493714 04 County: 24 PELICAN LAKE 02 E MIDLAKE 06/07/95 0844 0.01 06/07/95 0846 0.01 06/21/95 0843 89.02 0.01 164 213.1 324 06/21/95 0844 0.01 06/21/95 0846 0.01 07/13/95 0837 100.14 0.01 149 199.8 318 07/13/95 0839 0.01 07/13/95 0858 0.01 07/19/95 0822 95.98 0.01 143 190.7 296 07/19/95 0822 0.01 07/19/95 0822 0.01 08/01/95 1039 123 .96 0.01 134 178.2 310 08/01/95 1040 0.01 08/01/95 1041 0.01 08/15/95 1032 92.0 0.01 129 175.7 308 08/15/95 1032 0.01 08/15/95 1032 0.01 08/24/95 0900 90.0 0.01 125 173.2 290 08/24/95 0900 0.01 08/24/95 0900 0.01 09/06/95 0745 101.0 0.01 122 170.7 298 09/06/95 0754 0.01 09/06/95 0754 0.01 09/20/95 1004 108.0 0.02 126 173.2 296 09/20/95 1006 0.01 09/20/95 1009 0.01 10/25/95 1015 117.09 0.08 147 190.7 346 10/25/95 1016 0.01 10/25/95 1018 0.02 189.0 11/15/95 0958 107.5 0.01 166 200.6 2.7 332 11/15/95 1000 0.02 11/15/95 1001 0.02 02/07/96 1050 53.5 0.01 197 273.4 464 02/07/96 1052 0.01 02/07/96 1053 0.02 239.7 03/20/96 0941 106.7 0.01 198 228.5 348 03/20/96 0942 0.02 03/20/96 0944 0.02 232.3 04/05/96 1013 115.6 0.01 194 223.2 358 04/05/96 1024 <0.01 229.5 04/17/96 1007 127.1 0.01 202 240.3 362 04/17/96 1008 0.02 04/17/96 1009 0.02 05/01/96 0.03 05/01/96 0943 130.5 0.02 207 243.3 372 05/01/96 0945 0.01 05/29/96 1010 120.6 0.03 200 246.9 380 05/29/96 1011 0.01 05/29/96 1012 0.02 240.4 34 2 2 3 2 1 2 2 5 5 4 1 0 0 0 4 0 ------- Division of Water Quality 11/22/96 13:14 ADH Page: 35 Lab Analysis Results Inquiry Storet: 493714 04 County: 24 PELICAN LAKE 02 E MIDLAKE 06/12/96 0958 123.0 <0.01 190 219.4 366 <9 06/12/96 0959 0.01 06/12/96 1001 0.03 219.6 07/10/96 1058 132.7 0.02 166 204.3 362 NO 07/10/96 1100 0.02 07/10/96 1104 0.02 203.8 08/06/96 1314 161.5 0.025 148 191.0 348 NO 08/06/96 1316 0.031 191.2 09/16/96 1336 138.9 0.01 122 154.9 344 <9 09/16/96 1337 0.01 Averages 108.26 <0.015 161 208.5 6.85 253 335 < 2 Date Time Chlor-A D-Aluminum RSS D-N02+N03 D-Mercury D-T Phos. uq/1 uq/1 mq/1 mq/1 uq/1 mq/1 02/09/95 1615 0.131 <0.01 03/10/95 1203 0 <3 <0.02 <0.01 03/10/95 1204 <30.0 <0.02 <0.2 <0.01 04/25/95 0920 0.9 5 <0.02 <0.01 04/25/95 0922 <0.02 <0.01 04/25/95 0923 <0.02 <0.01 05/10/95 0 3 <0.02 0.01 05/10/95 <0.02 <0.01 05/10/95 <0.02 0.01 05/24/95 0842 1.9 3 <0.02 0.014 05/24/95 0844 <0.02 0.01 05/24/95 0846 <0.02 <0.01 06/07/95 0842 2.5 <3 <0.02 <0.01 06/07/95 0844 <0.02 <0.01 06/07/95 0846 <0.02 <0.01 06/21/95 0843 2.1 <3 <0.02 <0.01 06/21/95 0844 <0.02 <0.01 06/21/95 0846 <0.02 <0.01 07/13/95 0837 2.2 <3 <0.02 <0.01 07/13/95 0839 <0.02 <0.01 07/13/95 0858 <0.02 <0.01 07/19/95 0822 2.5 <3 <0.02 <0.01 07/19/95 0822 <0.02 <0.01 07/19/95 0822 <0.02 <0.01 08/01/95 1039 3.0 <3 <0.02 <0.01 08/01/95 _1040 <0.02 <0.01 08/01/95 1041 <0.02 <0.01 08/15/95 1032 1.8 3 <0.02 0.01 08/15/95 1032 <0.02 <0.01 08/15/95 1032 <0.02 <0.01 ------- Division of Water Quality 11/22/96 13:14 ADH Page: 36 Lab Analysis Results Inquiry storet: 493714 04 County: 24 PELICAN LAKE 02 E MIDLAKE 08/24/95 0900 3.0 <3 <0.02 <0.01 08/24/95 0900 <0.02 <0.01 08/24/95 0900 <0.02 <0.01 09/06/95 0745 5.5 <3 <0.02 0.01 09/06/95 0754 <0.02 0.01 09/06/95 0754 <0.02 0.01 09/20/95 1004 5.0 <3 <0.02 0.08 09/20/95 1006 <0.02 0.02 09/20/95 1009 <0.02 0.01 10/25/95 1015 6.0 <3 0.02 0.02 10/25/95 1016 <0.02 0.01 10/25/95 1018 <30.0 <0.02 <0.2 0.02 11/15/95 0958 5.6 <3 <0.02 0.01 11/15/95 1000 <0.02 0.01 11/15/95 1001 <0.02 0.01 02/07/96 1050 0.2 3 0.05 <0.01 02/07/96 1052 <0.02 <0.01 02/07/96 1053 <30.0 0.07 <0.2 0.01 03/20/96 0941 4 <0.02 0.01 03/20/96 0942 <0.02 0.01 03/20/96 0944 <30.0 0.02 <0.2 0.01 04/05/96 1013 1.6 4 <0.02 <0.01 04/05/96 1024 <30.0 <0.02 <0.2 <0.01 04/17/96 1007 1.6 4 0.03 0.01 04/17/96 1008 0.02 <0.01 04/17/96 1009 0.02 <0.01 05/01/96 0.03 <0.01 05/01/96 0943 2.0 <3 0.15 <0.01 05/01/96 0945 <0.02 0.01 05/29/96 1010 2.3 4 <0.02 0.01 05/29/96 1011 <0.02 0.01 05/29/96 1012 <30.0 <0.02 <0.2 0.01 06/12/96 0958 2.2 <3 <0.02 <0.01 06/12/96 0959 <0.02 <0.01 06/12/96 1001 <30.0 0.02 <0.2 <0.01 07/10/96 1058 1.2 4 <0.02 0.01 07/10/96 1100 <0.02 0.01 07/10/96 1104 <30.0 <0.02 <0.2 0.01 08/06/96 1314 4.1 4 <0.02 0.01 08/06/96 1316 <30.0 <0.02 <0.2 <0.01 09/16/96 1336 1.4 <3 <0.02 0.01 09/16/96 1337 <0.02 0.01 Averages 2.4 <30.0 < 3 <0.03 <0.2 <0.011 ------- Division of Water Quality 11/22/96 13:14 ADH Page: 37 Lab Analysis Results Inquiry Storet: 493715 04 County: 24 PELICftN LfiXE 04 NR WEST INLET Date Time Lab No Sanp Type F-Tenp Deq C F-pH F-D.O. itkj/1 F-Sp.Cond. urahos/cm Transp. m Depth m 02/09/95 1530 C9501376 21 0 03/10/95 1113 C9502377 21 7.4 8.1 7.8 483 0.4 0 03/10/95 1120 C9502388 29 7.1 8.0 6.7 553 3.5 04/25/95 0852 C9503998 21 11.6 8.6 9.1 547 4.43 0 04/25/95 0854 C9503999 25 11.6 8.5 8.6 549 2.5 04/25/95 0855 C9504000 29 11.6 8.5 8.1 547 4.2 05/10/95 0825 C9504547 21 15.5 8.6 9.8 514 4.45 0 05/10/95 0829 C9504548 25 14.6 8.6 9.6 511 2.0 05/10/95 0832 C9504549 29 14.5 8.5 8.5 516 4.0 05/24/95 0820 C9505191 21 16.7 8.7 8.8 538 4.2 0 05/24/95 0824 C9505192 25 16.8 8.8 8.8 540 2.0 05/24/95 0825 C9505193 29 16.8 8.8 8.7 544 4.0 06/07/95 0820 C9505615 21 17.3 8.8 8.1 510 1.6 0 06/07/95 0825 C9505616 29 17.2 8.8 8.0 508 4.0 06/21/95 0826 C9506301 21 19.2 8.7 8.5 513 2.6 0 06/21/95 0829 C9506302 29 16.4 8.5 9.4 425 4.1 07/13/95 0809 C9507239 21 23.1 8.4 8.6 491 3.7 0 07/13/95 0812 C9507241 29 23.0 8.4 8.0 467 3.9 07/13/95 1054 C9507240 25 23.1 8.4 7.8 474 2.0 07/19/95 0800 C9507678 21 23.7 9.4 11.4 483 3.9 0.2 07/19/95 0800 C9507679 29 21.3 8.7 6.1 455 4.0 08/01/95 1022 C9508170 21 22.8 9.4 9.5 445 3.8 0 08/01/95 1024 C9508171 29 22.8 9.5 10.8 433 3.5 08/15/95 1010 C9508763 21 22.9 9.6 8.7 481 3.8 0 08/15/95 1010 C9508764 29 22.6 9.3 7.7 478 3.5 08/24/95 0833 C9509149 21 24.3 9.7 10.4 483 2.9 0 08/24/95 0833 C9509150 29 24.0 9.5 7.2 491 3.5 09/06/95 0725 C9509692 21 23.8 7.6 8.4 486 2.8 0.2 09/06/95 0725 C9509693 29 21.6 9.0 5.9 501 3.5 09/20/95 0938 C9510230 21 20.0 8.9 8.7 443 3.1 0.2 09/20/95 0942 C9510231 29 18.3 8.9 5.8 468 3.5 10/25/95 0927 C9511231 21 8.2 8.6 9.2 445 0.9 0 10/25/95 0930 C9511232 29 8.0 8.5 8.5 429 3.4 11/15/95 0914 C9511806 21 5.6 8.3 9.1 477 0.5 0 11/15/95 0918 C9511807 29 5.9 8.3 8.4 528 3.8 02/07/96 0948 C9601000 21 2.0 8.3 10.1 598 4.3 0 02/07/96 0950 C9601001 29 4.3 8.0 5.1 668 4.3 03/20/96 0917 C9601953 21 8.0 8.5 9.9 602 3.4 0 03/20/96 0919 C9601954 29 7.9 8.5 9.8 610 3.0 04/05/96 1005 C9602231 21 10.5 8.3 9.2 618 4.2 0 04/05/96 1007 C9602232 29 10.3 8.3 9.1 616 4.3 04/17/96 0930 C9602620 21 12.2 8.5 10.2 619 3.0 0 04/17/96 0937 C9602621 29 12.2 8.5 10.2 616 3.3 05/01/96 0917 C9603084 21 12.68 8.4 7.68 619 3.9 0 05/01/96 0918 C9603085 25 12.42 8.43 7.81 621 2.0 ------- Division of Water Quality 11/22/96 13:14 ADH Page: 38 Lab Analysis Results Inquiry storet: 493715 04 County: 24 PELICAN LAKE 04 NR WEST INLET 05/01/96 0919 C9603086 29 12.4 8.44 7.85 622 4.0 05/28/96 0941 C9604030 25 16.9 8.7 9.2 614 2.0 05/29/96 0939 C9604029 21 17.0 8.7 9.0 611 3.9 0 05/29/96 0945 C9604031 29 16.8 8.8 10.3 608 3.9 06/12/96 0924 C9604684 21 22.0 9.1 12.9 601 3.8 0.1 06/12/96 0927 C9604686 29 19.7 8.4 1.0 654 3.8 06/12/96 1925 C9604685 25 21.8 9.1 13.4 600 2.0 07/10/96 0957 C9605862 21 24.0 9.7 13.6 566 3.3 0 07/10/96 1009 C9605864 29 22.0 8.1 0.4 642 3.3 08/06/96 1241 C9606930 21 22.4 10.1 9.4 596 2.8 0 08/06/96 1245 C9606931 29 22.4 10.1 10.7 595 2.6 09/16/96 1319 C9608499 21 19.2 9.6 7.8 631 1.74 0 09/16/96 1321 C9608500 29 19.2 9.5 7.8 635 1.8 Averages 16.3 8.8 8.6 542 3.1 1.8 Date Time Flaw, cfs T.Sus.Sol T.K.N. Sulfide Armenia N D-Arsenic D-Barium D-Cadmium mg/1 mg/1 mq/1 mcr/1 uq/1 uq/1 uq/1 02/09/95 1530 7.0 0.35 <0.05 03/10/95 1113 03/10/95 1120 <0.05 04/25/95 0852 <4.0 0.54 <0.05 04/25/95 0854 0.52 <0.05 04/25/95 0855 0.61 <0.05 05/10/95 0825 <4.0 0.61 <0.05 05/10/95 0829 0.68 <0.05 05/10/95 0832 0.71 <0.05 05/24/95 0820 <4.0 0.54 <0.05 05/24/95 0824 0.53 <0.05 05/24/95 0825 0.54 <0.05 06/07/95 0820 4.0 0.61 0.07 06/07/95 0825 0.85 0.07 06/21/95 0826 <4.0 0.54 <0.05 06/21/95 0829 0.43 <0.05 07/13/95 0809 <4.0 0.73 <0.05 07/13/95 0812 0.74 <0.05 07/13/95 1054 0.58 <0.05 07/19/95 0800 <4.0 o 00 H <0.05 07/19/95 0800 0.7 <0.05 08/01/95 1022 <4.0 0.57 0.065 08/01/95 1024 1.95 0.059 08/15/95 1010 <4.0 1.09 0.05 08/15/95 1010 1.04 <0.05 08/24/95 0833 <4.0 0.68 0.5 08/24/95 0833 0.62 <0.05 ------- Division of Water Quality 11/22/96 13:14 MH Page: 39 Lab Analysis Results Inquiry Storet: 493715 04 County: 24 PELICAN LAKE 04 NR WEST INLET 09/06/95 0725 <4.0 0.75 0.058 09/06/95 0725 0.78 <0.05 09/20/95 0938 <4.0 1.11 0.6 09/20/95 0942 1.0 0.114 10/25/95 0927 4.0 1.15 0.156 10/25/95 0930 0.61 <5.0 95.0 <1.0 11/15/95 0914 9.0 0.36 0.059 11/15/95 0918 0.57 0.206 02/07/96 0948 <4.0 LO 0.067 02/07/96 0950 L0 0.064 <5.0 110.0 <1.0 03/20/96 0917 <4.0 1.03 0.074 03/20/96 0919 1.01 0.069 <5.0 111.0 <1.0 04/05/96 1005 <4.0 1.68 0.051 04/05/96 1007 1.12 0.064 <5.0 115.0 <1.0 04/17/96 0930 <4.0 NO 0.059 04/17/96 0937 NO 0.058 05/01/96 0917 <4.0 0.914 <0.05 05/01/96 0918 0.764 <0.05 05/01/96 0919 0.894 <0.05 05/28/96 0941 0.584 <0.05 05/29/96 0939 <4.0 0.639 0.05 05/29/96 0945 1.639 0.183 <5.0 88.0 <1.0 06/12/96 0924 <4.0 0.847 <0.05 06/12/96 0927 0.807 0.051 <5.0 66.0 <1.0 06/12/96 1925 0.927 <0.05 07/10/96 0957 <4.0 0.646 <0.05 07/10/96 1009 0.626 <0.05 <5.0 41.0 <1.0 08/06/96 1241 <4.0 1.125 <0.05 08/06/96 1245 0.765 0.056 <5.0 58.0 <1.0 09/16/96 1319 <4.0 0.557 <0.05 09/16/96 1321 0.557 <0.05 <5.0 71.0 <1.0 Averages <4.32 0.73 <0.080 <5.0 83.9 <1.0 Date Time D-Calcium D-Chromiura D-Copper D-Iron D-Lead D-Magnesum D-Mangan D-Potassum mg/1 uq/1 uq/1 uq/1 uq/1 mq/1 uq/1 mq/1 02/09/95 1530 35 15 1.4 03/10/95 1113 03/10/95 1120 04/25/95 0852 41 32 3.6 04/25/95 0854 04/25/95 0855 05/10/95 0825 39 33 4 05/10/95 0829 05/10/95 0832 ------- Division of Water Quality 11/22/96 13:14 ADH Page: 40 Lab Analysis Results Inquiry Storet: 493715 04 County: 24 PELICAN LAKE 04 NR WEST INLET 05/24/95 0820 33 32 3.4 05/24/95 0824 05/24/95 0825 06/07/95 0820 35 32 3.4 06/07/95 0825 06/21/95 0826 32 32 3.3 06/21/95 0829 07/13/95 0809 24 32 3.1 07/13/95 0812 07/13/95 1054 07/19/95 0800 22 33 3.3 07/19/95 0800 08/01/95 1022 19 28 2.7 08/01/95 1024 08/15/95 1010 16 32 3.1 08/15/95 1010 08/24/95 0833 15 33 3.2 08/24/95 0833 09/06/95 0725 18 31 3.2 09/06/95 0725 09/20/95 0938 19 32 3.3 09/20/95 0942 10/25/95 0927 28 31 3.2 10/25/95 0930 36 <5.0 <12.0 29.0 <3.0 27 <5.0 11/15/95 0914 34 27 2.7 11/15/95 0918 02/07/96 0948 37 37 4.1 02/07/96 0950 39 <5.0 <12.0 <20.0 <3.0 34 6.0 03/20/96 0917 36 31.8 3.49 03/20/96 0919 38.8 <5.0 <12.0 24.1 <3.0 32.1 10.5 04/05/96 1005 39.5 34.4 4.34 04/05/96 1007 39.6 <5.0 <12.0 <20.0 <3.0 34 9.1 04/17/96 0930 36.7 33.8 3.8 04/17/96 0937 05/01/96 0917 38.3 35.2 4.1 05/01/96 0918 05/01/96 0919 05/28/96 0941 05/29/96 0939 38 37.3 4.19 05/29/96 0945 37.2 14.0 <12.0 <20.0 <3.0 37.6 <5.0 06/12/96 0924 27.3 35.3 3 06/12/96 0927 27 <5.0 <12.0 <20.0 <3.0 35.5 <5.0 06/12/96 1925 07/10/96 0957 16.6 37.9 3.6 07/10/96 1009 16.9 <5.0 <12.0 <20.0 <3.0 36.7 <5.0 08/06/96 1241 14 38.6 3.49 08/06/96 1245 14.3 <5.0 <12.0 <20.0 <3.0 38.9 <5.0 09/16/96 1319 14.1 33.4 4.3 09/16/96 1321 19.2 <5.0 <12.0 <20.0 <3.0 34 <5.0 ------- Division of Water Quality 1/22/96 13:14 ADH Page: 41 Lab Analysis Results Inquiry Storet: 493715 04 County: 24 PELICAN LAKE 04 NR WEST INLET Averages 29 <6.0 <12.0 <21.5 <3.0 33 <6.2 3 Date Time D-Selenium D-Silver D-Sodium D-Zinc Bicarbnate Carb. Diax Carbonate SI02 uq/1 uq/1 mg/1 uq/1 mq/1 mq/1 mq/1 mq/1 02/09/95 1530 9.7 132 21 0 03/10/95 1113 03/10/95 1120 04/25/95 0852 35.0 10.8 04/25/95 0854 04/25/95 0855 05/10/95 0825 37.0 10.3 05/10/95 0829 05/10/95 0832 05/24/95 0820 35.0 7.8 05/24/95 0824 05/24/95 0825 06/07/95 0820 35.0 6.0 06/07/95 0825 06/21/95 0826 37.0 4.2 06/21/95 0829 07/13/95 0809 36.0 4.0 07/13/95 0812 07/13/95 1054 07/19/95 0800 38.0 5.8 07/19/95 0800 08/01/95 1022 32.0 6.0 08/01/95 1024 08/15/95 1010 38.0 7.0 08/15/95 1010 08/24/95 0833 40.0 7.0 08/24/95 0833 09/06/95 0725 37.0 4.9 09/06/95 0725 09/20/95 0938 39.0 6.6 09/20/95 0942 10/25/95 0927 35.0 166 1 7.0 8.0 10/25/95 0930 <1.0 <2.0 <30.0 11/15/95 0914 29.0 198 2 0 9.0 11/15/95 0918 02/07/96 0948 43.0 236 2 0 6.0 02/07/96 0950 <1.0 <2.0 <30.0 03/20/96 0917 36.4 234 1 0 4.0 03/20/96 0919 <1.0 <2.0 <30.0 04/05/96 1005 40.4 236 2 0 4.0 ------- Division of Water Quality 11/22/96 13:14 ADH Page: 42 Lab Analysis Results Inquiry storet: 493715 04 County: 24 PELICAN LAKE 04 NR WEST INLET 04/05/96 1007 <1.0 <2.0 <30.0 04/17/96 0930 42.6 244 2 0 3.0 04/17/96 0937 05/01/96 0917 43.0 250 2 0 3.0 05/01/96 0918 05/01/96 0919 05/28/96 0941 05/29/96 0939 47.8 244 1 0 3.7 05/29/96 0945 1.8 <2.0 <30.0 06/12/96 0924 45.8 218 0 0 3.0 06/12/96 0927 <1.0 <2.0 <30.0 06/12/96 1925 07/10/96 0957 53.9 194 0 0 4.0 07/10/96 1009 <1.0 <2.0 <30.0 08/06/96 1241 57.9 188 0 0 8.0 08/06/96 1245 <1.0 <2.0 <30.0 09/16/96 1319 63.9 165 0 0 10.0 09/16/96 1321 <1.0 <2.0 <30.0 Averages <1.1 <2.0 39.5 <30.0 208 3 0.54 6.09 Date Time Sulfate T. Phos. Tot. Alk. T. Hardns. Turbidity L-Sp. Cond IDS « <*11 I H 00 o o T Vol Sol mq/1 mq/1 mq/1 mq/1 NTCJ umhos/am mq/1 mq/1 02/09/95 1530 48.052 0.015 108 149 .0 14.0 286 196 03/10/95 1113 03/10/95 1120 0.015 04/25/95 0852 102.19 0.013 172 234 .0 346 2 04/25/95 0854 0.012 04/25/95 0855 0.021 05/10/95 0825 116.17 0.013 179 233 .1 348 1 05/10/95 0829 0.01 05/10/95 0832 0.014 05/24/95 0820 107.66 <0.01 174 214 .0 326 1 05/24/95 0824 0.014 05/24/95 0825 <0.01 06/07/95 0820 109.25 0.01 166 219.0 324 1 06/07/95 0825 0.02 06/21/95 0826 89.09 0.01 159 211.5 314 1 06/21/95 0829 0.01 07/13/95 0809 93.06 0.01 141 191.5 298 2 07/13/95 0812 0.02 07/13/95 1054 0.01 07/19/95 0800 93.02 0.01 140 190.7 296 2 07/19/95 0800 0.01 08/01/95 1022 95.78 <0.01 124 162.6 280 2 ------- Division of Water Quality 1.l/22/96 13:14 ADH Page: 43 Lab Analysis Results Inquiry storet: 493715 04 County: 24 PELICAN LAKE 04 NR WEST INLET 08/01/95 1024 <0.01 08/15/95 1010 88.0 <0.01 126 171.6 288 1 08/15/95 1010 0.01 08/24/95 0833 92.0 0.01 121 173.2 296 2 08/24/95 0833 0.01 09/06/95 0725 93.0 0.01 127 172.5 294 1 09/06/95 0725 0.03 09/20/95 0938 97.0 0.01 132 179.1 296 4 09/20/95 0942 0.03 10/25/95 0927 105.55 0.01 148 197.4 312 3 10/25/95 0930 0.01 200.9 11/15/95 0914 86.9 0.02 162 195 .9 288 4 11/15/95 0918 0.08 02/07/96 0948 55.8 0.01 194 244 .6 364 1 02/07/96 0950 0.01 237.2 03/20/96 0917 99.5 0.01 192 220.7 336 0 03/20/96 0919 0.03 228.9 04/05/96 1005 119.4 <0.01 194 240.1 360 0 04/05/96 1007 0.02 238.7 04/17/96 0930 120.4 0.02 200 230.6 352 0 04/17/96 0937 0.02 05/01/96 0917 121.8 0.01 205 240.4 370 0 05/01/96 0918 0.01 05/01/96 0919 0.02 05/28/96 0941 0.01 05/29/96 0939 123.0 0.03 200 248.3 394 0 05/29/96 0945 0.05 247.5 06/12/96 0924 122.1 0.01 179 213.4 348 <9 06/12/96 0927 0.01 213.4 06/12/96 1925 0.01 07/10/96 0957 135.0 0.02 159 197.4 358 NO 07/10/96 1009 0.02 193.2 08/06/96 1241 157.5 0.084 154 193.7 368 NO 08/06/96 1245 0.025 195.7 09/16/96 1319 140.9 0.01 135 172.6 374 <9 09/16/96 1321 0.01 187.8 Averages 104.49 <0.017 160 207.1 14.00 28G 325 < 2 Date Time Chlor-A D-Aluminum uq/i uq/l RSS nxr/1 D-N02+N03 mil D-Mercury uq/i D-T Phos. "q/i 02/09/95 1530 03/10/95 1113 03/10/95 1120 04/25/95 0852 1.2 0.7 1.1 0.192 0.065 <0.02 0.012 0.011 <0.01 ------- Division of Water Quality L3 :14 Lab Analysis Results Inquiry Storet: 493715 04 County: 24 PELICAN LAKE 04 NR WEST INLE7T 04/25/95 0854 <0.02 <0.01 04/25/95 0855 <0.02 <0.01 05/10/95 0825 1.2 3 <0.02 <0.01 05/10/95 0829 <0.02 <0.01 05/10/95 0832 <0.02 <0.01 05/24/95 0820 1.1 3 <0.02 <0.01 05/24/95 0824 <0.02 0.01 05/24/95 0B25 <0.02 <0.01 06/07/95 0820 2.1 3 <0.02 <0.01 06/07/95 0B25 <0.02 <0.01 06/21/95 0826 1.7 3 <0.02 <0.01 06/21/95 0829 <0.02 <0.01 07/13/95 0809 2.0 <3 <0.02 <0.01 07/13/95 0812 <0.02 <0.01 07/13/95 1054 <0.02 <0.01 07/19/95 0800 1.9 <3 <0.02 <0.01 07/19/95 0800 <0.02 0.01 08/01/95 1022 2.1 <3 <0.02 <0.01 08/01/95 1024 <0.02 <0.01 08/15/95 1010 1.8 3 <0.02 <0.01 08/15/95 1010 <0.02 <0.01 08/24/95 0833 2.4 <3 <0.02 <0.01 08/24/95 0833 <0.02 <0.01 09/06/95 0725 2.5 3 0.02 0.01 09/06/95 0725 <0.02 0.01 09/20/95 0938 3.6 <3 <0.02 0.01 09/20/95 0942 <0.02 0.01 10/25/95 0927 3.1 <3 0.02 0.03 10/25/95 0930 40.0 0.04 <0.2 0.03 11/15/95 0914 3.4 5 0.02 <0.01 11/15/95 0918 0.02 0.01 02/07/96 0948 0.2 3 0.02 0.01 02/07/96 0950 <30.0 0.02 <0.2 0.01 03/20/96 0917 4 <0.02 0.01 03/20/96 0919 <30.0 0.66 <0.2 <0.01 04/05/96 1005 0.6 4 <0.02 <0.01 04/05/96 1007 <30.0 <0.02 <0.2 <0.01 04/17/96 0930 4.5 4 <0.02 <0.01 04/17/96 0937 0.02 0.02 05/01/96 0917 1.2 4 <0.02 0.01 05/01/96 0918 <0.02 0.01 05/01/96 0919 0.05 0.01 05/28/96 0941 <0.02 0.01 05/29/96 0939 1.1 4 <0.02 0.01 05/29/96 0945 <30.0 0.08 <0.2 0.04 06/12/96 0924 0.8 <3 <0.02 0.01 06/12/96 0927 <30.0 0.02 <0.2 0.01 06/12/96 1925 <0.02 0.01 07/10/96 0957 1.7 4 <0.02 0.01 ------- Division of Water Quality '1/22/96 13:14 ADH Page: 45 Lab Analysis Results Inquiry storet: 493715 04 County: 24 PELICAN LAKE 04 NR VEST INLET 07/10/96 1009 <30.0 <0.02 <0.2 0.01 08/06/96 1241 3.8 4 <0.02 <0.01 08/06/96 1245 <30.0 <0.02 <0.2 <0.01 09/16/96 1319 1.4 <3 0.04 O o H 09/16/96 1321 <30.0 <0.02 <0.2 0.01 Averages 1.9 <31.1 <3 <0.04 <0.2 <0.011 ------- Division of Water Quality 11/22/96 13:14 ADHPage: 46 Lab Analysis Results Inquiry Storet: 493716 04 County: 24 PELICAN LAKE 03 SE BAY Date Time Lab No Sarap Type F-Temp Deq C F-pH F-D.O. mq/1 F-Sp.Cond. urahos/cm Transp. m Depth m 03/10/95 1228 C9502381 21 9.0 8.1 7.2 547 2.7 0 03/10/95 1229 C9502382 29 8.4 8.1 7.4 543 2.7 04/25/95 0929 C9503995 21 12.6 8.6 9.3 556 3.42 0.2 04/25/95 0930 C9503996 25 12.5 8.5 9.3 557 1.7 04/25/95 0932 C9503997 29 12.5 8.5 9.5 555 2.7 05/10/95 0908 C9504544 21 14.1 8.5 8.9 514 2.6 0 05/10/95 0910 C9504545 25 14.0 8.5 10.1 518 1.5 05/10/95 0911 C9504546 29 14.0 8.5 11.0 513 2.5 05/24/95 0850 C9505188 21 16.8 8.7 7.8 550 2.6 0 05/24/95 0B51 C9505189 25 16.8 8.7 7.8 552 1.4 05/24/95 0852 C9505190 29 16.8 8.7 7.8 547 2.4 06/07/95 0851 C9505617 21 17.8 8.8 7.3 520 3.1 0 06/07/95 0853 C9505618 29 17.5 8.8 7.4 520 2.2 06/21/95 0852 C9506299 21 19.4 8.7 8.7 521 2.5 0 06/21/95 0853 C9506300 29 19.3 8.8 9.4 523 2.2 07/13/95 0844 C9507236 21 23.3 8.4 7.9 497 2.6 0 07/13/95 0844 C9507237 25 23.0 8.3 7.7 497 1.5 07/13/95 0847 C9507238 29 23.9 8.4 7.4 496 3.0 07/19/95 0824 C9507680 21 24.5 9.2 9.5 499 2.8 0 07/19/95 0824 C9507681 29 24.5 9.2 9.9 501 2.7 08/01/95 1047 C9508172 21 23.5 9.5 9.4 463 3.6 0 08/01/95 1049 C9508173 29 23.2 9.5 9.9 480 3.8 08/15/95 1040 C9508761 21 23.7 9.4 7.1 485 2.0 0.2 08/15/95 1040 C9508762 29 23.7 9.4 7.1 485 2.0 08/24/95 0912 C9509148 29 24.8 9.6 9.7 484 2.0 09/06/95 C9509691 29 23.3 9.5 7.2 483 2.0 09/06/95 0810 C9509690 21 23.2 9.5 7.2 485 2.3 0.2 09/20/95 1014 C9510228 21 20.3 9.6 7.5 442 2.1 0.2 09/20/95 1021 C9510229 29 20.2 9.7 7.5 443 1.9 10/25/95 1032 C9511229 21 9.5 8.7 8.6 473 2.1 0 10/25/95 1033 C9511230 29 9.5 8.8 7.9 476 2.1 11/15/95 1014 C9511804 21 6.4 8.3 8.8 533 1.7 0 11/15/95 1016 C9511805 29 6.3 8.3 8.7 545 2.4 02/07/96 0920 C9601003 29 2.0 8.3 10.1 598 2.8 02/07/96 1106 C9601002 21 4.4 8.1 6.9 599 2.8 0 03/20/96 0955 C9601951 21 8.5 8.4 9.3 623 3.0 0 03/20/96 0957 C9601952 29 8.2 8.4 9.3 621 3.1 04/05/96 1030 C9602229 21 10.2 8.6 10.1 619 3.1 0 04/05/96 1031 C9602230 29 10.0 8.4 8.8 622 3.1 04/17/96 1018 C9602622 21 12.6 8.52 10.1 612 3.1 0 04/17/96 1020 C9602623 29 12.6 8.5 9.9 612 3.0 05/01/96 0953 C9603081 21 13.1 8.4 7.5 622 2.2 0 05/01/96 0954 C96030B2 25 12.6 8.4 7.8 624 1.5 05/01/96 0955 C9603083 29 12.5 8.4 7.9 623 3.0 05/29/96 1022 C9604027 21 17.2 8.7 9.1 607 2.6 0 ------- Division of Water Quality '1/22/96 13:14 ADH Page: 47 Lab Analysis Results Inquiry Storet: 493716 04 County: 24 PELICAN LAKE 03 SE BAY 05/29/96 1024 C9604028 29 16.9 8.7 9.7 612 2.6 06/12/96 1013 C9604681 21 22.8 9.0 9.5 608 2.4 0 06/12/96 1013 C9604682 25 22.6 9.0 10.7 609 1.5 06/12/96 1015 C9604683 29 22.6 9.1 12.0 602 2.5 07/10/96 C9605871 21 24.7 9.4 9.5 572 2.9 0 07/10/96 C9605872 25 24.2 9.5 10.0 571 1.5 07/10/96 1122 C9605873 29 24.0 9.6 11.2 569 2.9 08/06/96 1333 C9606928 21 22.5 10.1 9.8 574 1.45 0 08/06/96 1334 C9606929 29 22.5 10.1 10.1 575 1.1 09/16/96 1339 C9608506 21 19.0 10.0 9.3 598 1.2 0 09/16/96 1340 C9608507 29 19.2 10.0 10.0 602 1.2 Averages 16.8 8.9 8.9 548 2.5 1.3 Date Time Flow, cfs T.Sua.Sol T.K.N. Sulfide Airmonia N D-Arsenic D-Barium D-Cadmium mg/l mq/1 mej/1 mq/1 uq/1 uq/1 uq/1 03/10/95 1228 <3.0 <0.05 03/10/95 1229 <0.05 <5.0 100.0 <1.0 04/25/95 0929 <4.0 0.2 <0.05 04/25/95 0930 0.74 <0.05 04/25/95 0932 0.57 <0.05 05/10/95 0908 <4.0 0.54 <0.05 05/10/95 0910 0.93 <0.05 05/10/95 0911 0.93 0.05 05/24/95 0850 <4.0 0.45 <0.05 05/24/95 0851 0.6 <0.05 05/24/95 0852 0.57 <0.05 06/07/9S 0851 <4.0 0.72 0.06 06/07/95 0853 0.56 0.06 06/21/95 0852 <4.0 0.68 <0.05 06/21/95 0853 0.64 <0.05 07/13/95 0844 <4.0 0.67 <0.05 07/13/95 0844 0.54 <0.05 07/13/95 0847 0.73 <0.05 07/19/95 0824 <4.0 0.63 <0.05 07/19/95 0824 0.72 <0.05 08/01/95 1047 <4.0 1.24 0.145 08/01/95 1049 0.82 <0.05 08/15/95 1040 <4.0 0.67 <0.05 08/15/95 1040 0.7 0.05 08/24/95 0912 0.6 0.05 09/06/95 0.64 <0.05 09/06/95 0810 <4.0 0.89 <0.05 09/20/95 1014 <4.0 0.82 0.067 09/20/95 1021 0.84 0.062 ------- 11/22/96 13:14 Division of Water Quality Lab Analysis Results Inquiry ADH Page: 48 Storet: 493716 04 County: 24 PELICAN LAKE 03 SE BAY 10/25/95 1032 <4.0 0.95 <0.05 10/25/95 1033 0.98 <0.05 11/15/95 1014 <4.0 0.64 0.055 11/15/95 1016 0.82 0.054 02/07/96 0920 L0 <0.07 0.053 02/07/96 1106 <4.0 L0 0.057 03/20/96 0955 <4.0 0.65 0.071 03/20/96 0957 0.86 0.075 04/05/96 1030 <4.0 0.98 0.052 04/05/96 1031 0.94 0.05 04/17/96 1018 <4.0 NO 0.065 04/17/96 1020 NO 0.075 05/01/96 0953 <4.0 0.634 <0.05 05/01/96 0954 0.794 <0.05 05/01/96 0955 1.174 <0.07 <0.05 05/29/96 1022 <4.0 0.789 0.057 05/29/96 1024 0.789 0.054 06/12/96 1013 <4.0 0.607 <0.05 06/12/96 1013 0.827 <0.05 06/12/96 1015 0.777 0.05 07/10/96 <4.0 0.816 <0.05 07/10/96 0.646 0.055 07/10/96 1122 0.786 0.053 08/06/96 1333 <4.0 0.855 <0.05 08/06/96 1334 0.685 <0.05 09/16/96 1339 <4.0 0.587 <0.05 09/16/96 1340 0.597 <0.05 <5.0 42.0 <1.0 Averages <3.96 0.68 <0.070 <0.055 <5.0 71.0 <1.0 Date Time D-Calcium D-Chromium mq/1 ug/1 03/10/95 1228 03/10/95 1229 04/25/95 0929 41 04/25/95 0930 04/25/95 0932 05/10/95 0908 38 05/10/95 0910 05/10/95 0911 05/24/95 0850 35 05/24/95 0851 05/24/95 0852 06/07/95 0851 33 06/07/95 0853 D-Copper D-Iron D-Lead uq/1 uq/1 uq/1 <12.0 35.0 <3.0 D-Magnesum D-Mangan D-Potassum mg/1 uq/1 mq/1 10.0 32 3.8 33 3.9 32 3.5 33 3.5 ------- 11/22/96 13:14 Division of Water Quality t ah Analysis Results Inquiry ADH Page: 49 Storet: 493716 04 County: 24 PELICAN LAKE 03 SE BAY 06/21/95 0852 31 06/21/95 0853 07/13/95 0844 24 07/13/95 0844 07/13/95 0847 07/19/95 0824 21 07/19/95 0824 08/01/95 1047 18 08/01/95 1049 08/15/95 1040 16 08/15/95 1040 08/24/95 0912 09/06/95 09/06/95 0810 15 09/20/95 1014 15 09/20/95 1021 10/25/95 1032 22 10/25/95 1033 11/15/95 1014 26 11/15/95 1016 02/07/96 0920 02/07/96 1106 36 03/20/96 0955 35 03/20/96 0957 04/05/96 1030 39.3 04/05/96 1031 04/17/96 1018 37 04/17/96 1020 05/01/96 0953 38.5 05/01/96 0954 05/01/96 0955 05/29/96 1022 36.8 05/29/96 1024 06/12/96 1013 28.8 06/12/96 1013 06/12/96 1015 07/10/96 00 07/10/96 07/10/96 1122 16.7 08/06/96 1333 12.8 08/06/96 1334 09/16/96 1339 10.7 09/16/96 1340 <5.0 <12.0 <20.0 <3.0 33 34 34 33 32 32 33 33 33 36 34 34.5 34 35.3 37.6 35.8 38.6 38.5 38.8 31.9 <5.0 3.4 3.4 3.3 3 3.2 3.3 3.6 3.7 4.1 3.9 4.24 3.8 4.1 4.3 3.2 3.7 3.68 Averages 27 <5.0 <12.0 <27.5 <3.0 34 <7.5 ------- Division of Water Quality 11/22/96 13:14 ADH Page: 50 Lab Analysis Results Inquiry storet: 493716 04 County: 24 PELICAN LAKE 03 SE BAY Date Time D-Selenium D-Silver D-Sodium D-Zinc Bicarbnate Carb. Diax Carbonate SI02 uq/1 uq/1 mq/1 uq/1 mq/1 mq/1 mq/1 mq/1 03/10/95 1228 03/10/95 1229 <1.0 <2.0 <30.0 04/25/95 0929 36.0 10.6 04/25/95 0930 04/25/95 0932 05/10/95 0908 36.0 9.6 05/10/95 0910 05/10/95 0911 05/24/95 0850 36.0 8.6 05/24/95 0851 05/24/95 0852 06/07/95 0851 37.0 7.0 06/07/95 0853 06/21/95 0852 38.0 5.0 06/21/95 0853 07/13/95 0844 39.0 5.0 07/13/95 0844 07/13/95 0847 07/19/95 0824 39.0 5.5 07/19/95 0824 08/01/95 1047 38.0 6.0 08/01/95 1049 08/15/95 1040 38.0 7.0 08/15/95 1040 08/24/95 0912 09/06/95 09/06/95 0810 39.0 7.5 09/20/95 1014 40.0 8.5 09/20/95 1021 10/25/95 1032 41.0 160 1 9.0 9.0 10/25/95 1033 11/15/95 1014 40.0 202 1 0 9.0 11/15/95 1016 02/07/96 0920 02/07/96 1106 42.0 238 2 0 6.0 03/20/96 0955 39.6 244 1 0 3.0 03/20/96 0957 04/05/96 1030 40.3 236 2 0 4.0 04/05/96 1031 04/17/96 1018 42.4 244 2 0 3.0 04/17/96 1020 05/01/96 0953 43.5 254 2 0 2.0 05/01/96 0954 05/01/96 0955 05/29/96 1022 47.7 244 1 0 2.5 ------- Division of Water Quality 11/22/96 13:14 ADH Page: 51 Lab Analysis Results Inquiry Storet: 493716 04 County: 24 PELICAN LAKE 03 SE BAY 05/29/96 1024 06/12/96 1013 46.3 228 1 0 3.0 06/12/96 1013 06/12/96 1015 07/10/96 52.2 195 0 0 5.0 07/10/96 07/10/96 1122 <1.0 <2.0 <30.0 08/06/96 1333 56.9 182 0 0 8.0 08/06/96 1334 09/16/96 1339 59.9 152 0 0 5.0 09/16/96 1340 Averages <1.0 <2.0 42.1 <30.0 215 1 0.75 6.08 Date Time Sulfate T. Phos. Tot. Alk. T. Hardns. Turbidity L-Sp. Cond IDS ® 180C T Vol Sol roq/l mq/1 mq/l mq/1 NTU umhos/cm mq/1 mq/1 03/10/95 1228 0.011 1 03/10/95 1229 0.01 04/25/95 0929 108.92 0.019 175 234.0 368 2 04/25/95 0930 0.013 04/25/95 0932 0.022 05/10/95 0908 114.76 0.02 177 230.6 342 2 05/10/95 0910 0.017 05/10/95 0911 0.037 05/24/95 0850 105.93 <0.01 177 219.0 336 1 05/24/95 0851 0.01 05/24/95 0852 0.022 06/07/95 0851 110.95 0.01 169 218.1 328 1 06/07/95 0853 0.01 06/21/95 0852 88.96 0.01 164 213.1 326 1 06/21/95 0853 0.01 07/13/95 0844 104.35 0.01 146 199.8 312 2 07/13/95 0844 0.01 07/13/95 0847 0.01 07/19/95 0824 95.49 0.01 140 192.3 306 2 07/19/95 0824 0.01 08/01/95 1047 114.49 <0.01 134 180.7 312 2 08/01/95 1049 <0.01 08/15/95 1040 95.0 0.01 126 171.6 310 1 08/15/95 1040 <0.01 08/24/95 0912 <0.01 09/06/95 0.01 09/06/95 0810 97.0 0.01 123 169.1 298 2 09/20/95 1014 98.0 0.01 128 173.2 298 4 09/20/95 1021 0.01 ------- Division of Water Quality 11/22/96 13:14 ADH Page: 52 Lab Analysis Results Inquiry Storet: 49371S 04 County: 24 PELICAN LAKE 03 SE BAY 10/25/95 1032 112.54 0.02 146 190.7 326 2 10/25/95 1033 0.01 11/15/95 1014 107.8 0.02 166 200.6 340 3 11/15/95 1016 0.02 02/07/96 0920 0.02 02/07/96 1106 54.4 0.01 195 237.9 366 1 03/20/96 0955 109.4 0.01 200 227.2 352 0 03/20/96 0957 0.01 04/05/96 1030 118.0 <0.01 194 240.0 360 0 04/05/96 1031 <0.01 04/17/96 1018 130.3 0.01 200 232.2 352 0 04/17/96 1020 0.01 05/01/96 0953 125.9 0.01 208 241.3 372 0 05/01/96 0954 0.02 05/01/96 0955 0.01 05/29/96 1022 121.5 0.01 200 246.5 374 0 05/29/96 1024 0.01 06/12/96 1013 124.8 <0.01 187 219.2 366 <9 06/12/96 1013 0.01 06/12/96 1015 0.01 07/10/96 136.2 0.01 160 203.2 360 NO 07/10/96 0.02 07/10/96 1122 0.02 200.1 08/06/96 1333 156.6 0.032 149 191.6 354 NO 08/06/96 1334 0.044 09/16/96 1339 146.1 0.01 125 157.9 348 <9 09/16/96 1340 0.01 Averages 112.06 <0.014 165 207.9 339 < 2 Date Time Chlor-A D-Aluminum RSS D-N02+N03 D-Mercury D-T Phos. uq/1 uq/1 mg/1 mq/1 uq/1 mq/1 03/10/95 1228 0 <3 0.024 0.01 03/10/95 1229 <30.0 <0.02 <0.2 0.01 04/25/95 0929 0.8 <3 <0.02 <0.01 04/25/95 0930 <0.02 <0.01 04/25/95 0932 <0.02 <0.01 05/10/95 0908 0.2 <3 <0.02 0.013 05/10/95 0910 <0.02 <0.01 05/10/95 0911 <0.02 0.012 05/24/95 0850 1.0 3 <0.02 <0.01 05/24/95 0851 <0.02 <0.01 05/24/95 0852 <0.02 <0.01 06/07/95 0851 2.1 3 <0.02 <0.01 06/07/95 0853 <0.02 <0.01 ------- Division of Water Quality 1.3:14 Lab Analysis Results Inquiry Storet: 493716 04 County: 24 PELICAN LAKE 03 SE BAY 06/21/95 0852 1.5 3 <0.02 <0.01 06/21/95 0853 <0.02 <0.01 07/13/95 0844 2.2 <3 <0.02 <0.01 07/13/95 0844 <0.02 <0.01 07/13/95 0847 <0.02 <0.01 07/19/95 0824 2.1 <3 <0.02 <0.01 07/19/95 0824 <0.02 <0.01 08/01/95 1047 2.7 <3 <0.02 <0.01 08/01/95 1049 <0.02 <0.01 08/15/95 1040 1.5 3 <0.02 <0.01 08/15/95 1040 <0.02 <0.01 08/24/95 0912 <0.02 0.01 09/06/95 <0.02 <0.01 09/06/95 0810 3.2 <3 <0.02 0.01 09/20/95 1014 3.0 <3 <0.02 0.01 09/20/95 1021 <0.02 0.01 10/25/95 1032 10.0 <3 0.02 0.02 10/25/95 1033 0.03 0.02 11/15/95 1014 2.3 <3 0.02 0.02 11/15/95 1016 <0.02 <0.01 02/07/96 0920 <0.02 <0.01 02/07/96 1106 0.2 3 0.06 <0.01 03/20/96 0955 4 <0.02 0.01 03/20/96 0957 <0.02 0.01 04/05/96 1030 0.7 4 <0.02 <0.01 04/05/96 1031 <0.02 <0.01 04/17/96 1018 1.8 4 0.02 0.01 04/17/96 1020 NO 0.03 0.01 05/01/96 0953 1.6 4 <0.02 0.01 05/01/96 0954 0.02 <0.01 05/01/96 0955 0.03 0.01 05/29/96 1022 0.5 4 <0.02 <0.01 05/29/96 1024 <0.02 0.01 06/12/96 1013 1.8 <3 <0.02 <0.01 06/12/96 1013 <0.02 <0.01 06/12/96 1015 <0.02 0.01 07/10/96 0.8 4 <0.02 0.01 07/10/96 <0.02 0.01 07/10/96 1122 <30.0 <0.02 <0.2 0.01 08/06/96 1333 3.6 4 <0.02 <0.01 08/06/96 1334 <0.02 0.01 09/16/96 1339 2.2 <3 <0.02 0.8 09/16/96 1340 <0.02 0.02 ADH Page: 53 Averages 1.9 <30.0 < 3 <0.02 <0.2 <0.025 ------- Appendix C Stream Water Quality Data ------- Division of Water Quality 11/22/96 13:14 ADH Page: 5 Mb Analysis Results Inquiry Storet: 493708 03 County: 24 CORffif PARK CANAL @ HWY 40 XING Date Time Lab No Sanp Type F-Temp F-pH F-D.O. F-Sp.Cond. Transp. Depth Peg C mq/1 umhos/cm m m 02/09/95 1230 C9501374 04 3.5 7.8 10.5 350 03/15/95 1530 C9502568 04 7.0 8.5 10.2 359 03/30/95 1749 C9503144 04 10.4 8.4 9.2 356 05/10/95 1422 C9504585 04 14.5 8.4 8.9 384 05/24/95 1329 C9505171 04 12.4 8.5 8.7 473 06/07/95 1330 C9505606 04 15.0 8.5 8.4 439 OS/21/95 1316 C9506280 04 17.7 8.4 7.7 465 07/19/95 1413 C9507665 04 19.8 8.4 8.2 414 08/24/95 1546 C9509162 04 22.0 8.6 8.0 433 09/20/95 0904 C9510212 04 13.7 8.4 7.1 346 10/25/95 1336 C9511180 04 9.6 8.4 9.4 392 11/15/95 1330 C9511786 04 6.7 8.4 10.3 420 01/03/96 0733 C9600115 04 0.97 8.37 9.89 681 02/07/96 0734 C9600992 04 0.13 8.35 11.59 637 03/20/96 0738 C9601923 04 2.45 8.38 10.35 605 04/17/96 1234 C9602573 04 8.1 8.6 11.6 571 05/01/96 0740 C9603061 04 8.52 8.33 7.52 497 05/13/96 1247 C9603476 04 14.3 8.6 8.1 530 05/29/96 1415 C9604034 04 16.2 8.6 8.8 657 06/12/96 0734 C9604760 04 13.11 8.28 7.97 550 Averages 10.8 8.4 9.1 478 Date Time Flow, cfs T.Sus.Sol T.K.N. Sulfide Armenia N D-Arsenic D-Barium D-Cadmium mq/1 mq/1 ire;/! mq/1 uq/1 uq/1 uq/1 02/09/95 1230 27.9 32.0 0.26 <0.05 <5.0 97.0 <1.0 03/15/95 1530 48.0 36.0 0.25 <0.05 <5.0 96.0 <1.0 03/30/95 1749 27.0 132.0 0.14 <0.05 05/10/95 1422 25.0 44.0 0.19 <0.05 05/24/95 1329 43.0 85.0 0.5 <0.05 06/07/95 1330 45.0 63.0 0.58 0.16 06/21/95 1316 25.0 52.0 0.15 <0.05 07/19/95 1413 56.0 40.0 0.53 <0.05 <5.0 97.0 <1.0 08/24/95 1546 35.0 72.0 0.75 0.111 09/20/95 0904 31.0 54.0 0.98 0.05 10/25/95 1336 50.0 26.0 0.1 <0.05 <5.0 110.0 <1.0 11/15/95 1330 48.0 61.0 0.56 0.05 01/03/96 0733 5.0 23.0 0.54 <0.05 02/07/96 0734 1.0 26.0 L0 0.137 <5.0 110.0 <1.0 03/20/96 0738 4.2 31.0 0.43 0.061 04/17/96 1234 12.0 <4.0 NO <0.05 ------- Division of Water Quality 11/22/96 13:14 ADH Page: 6 Lab Analysis Results Inquiry storet: 493708 03 County: 24 OURAY PARK CANAL ffl HWY 40 XING 05/01/96 0740 31.89 32.0 0.794 0.052 <5.0 109.0 <1.0 05/13/96 1247 28.0 56.0 0.356 <0.05 05/29/96 1415 36.0 60.8 0.584 <0.05 06/12/96 0734 18.8 30.4 0.557 <0.05 Averages 29.9 <48.01 0.41 <0.064 <5.0 103.2 <1.0 Date Time D-Calcium D-Chromium D-Copper D-Iran D-Lead D-Magnesum D-Mangan D-Potassum mq/1 uq/1 uq/1 uq/1 uq/1 mq/1 uq/1 mq/1 02/09/95 1230 37 <5.0 <12.0 38.0 4.0 15 6.0 1.2 03/15/95 1530 41 <5.0 <12.0 47.0 <3.0 17 <5.0 1.4 03/30/95 1749 41 18 1.6 05/10/95 1422 44 22 1.9 05/24/95 1329 44 25 2.4 06/07/95 1330 43 23 2.4 06/21/95 1316 42 23 2.2 07/19/95 1413 37 <5.0 <12.0 64.0 <3.0 19 <5.0 2 08/24/95 1546 38 23 2.6 09/20/95 0904 37 23 2.5 10/25/95 1336 42 <5.0 <12.0 47.0 <3.0 22 <5.0 2 11/15/95 1330 41 21 1.7 01/03/96 0733 53 35 2.6 02/07/96 0734 54 <5.0 <12.0 40.0 <3.0 37 7.6 2.4 03/20/96 0738 48.5 30 2.05 04/17/96 1234 46 25.2 1.9 05/01/96 0740 49.6 <5.0 <12.0 <20.0 <3.0 27 <5.0 2.1 .05/13/96 1247 50.9 28.7 2.33 05/29/96 1415 52.3 34.8 3.36 06/12/96 0734 45.1 25.9 1.7 Averages 44 <5.0 <12.0 <42.7 <3.2 25 <5.6 2 Date Time D-Selenium D-Silver D-Sodium D-Zinc Bicarbnate Carb. Diax Carbonate SI02 uq/1 uq/1 mq/1 uq/1 mq/1 mq/1 mq/1 mq/1 02/09/95 1230 <1.0 <2.0 9.2 <30.0 140 1 0 03/15/95 1530 <1.0 <2.0 11.0 <30.0 152 1 0 03/30/95 1749 13.0 7.0 05/10/95 1422 16.0 6.9 05/24/95 1329 23.0 7.8 06/07/95 1330 22.0 8.0 06/21/95 1316 19.0 6.8 ------- Division of Water Quality 11/22/96 13:14 ADH Page: 7 Lab Analysis Results Inquiry storet: 493708 03 County: 24 OURAY PARK CANAL ® HWV 40 XING 07/19/95 1413 <1.0 <2.0 18.0 <30.0 00 | O 1 08/24/95 1546 20.0 8.0 09/20/95 0904 19.0 8.0 10/25/95 1336 <1.0 <2.0 17.0 <30.0 189 1 0 7.0 11/15/95 1330 17.0 193 1 0 7.0 01/03/96 0733 32.0 264 2 0 11.9 02/07/96 0734 <1.0 <2.0 32.0 <30.0 262 2 0 11.0 03/20/96 0738 26.3 228 1 0 9.0 04/17/96 1234 17.7 208 1 0 8.0 05/01/96 0740 <1.0 <2.0 20.0 <30.0 220 2 0 8.0 05/13/96 1247 22.4 216 1 0 8.0 05/29/96 1415 46.2 248 1 0 9.8 06/12/96 0734 24.4 218 2 0 8.0 Averages <1.0 <2.0 21.3 <30.0 212 1 0.00 8.23 Date Time Sulfate T. Phos. Tot. Alk. T. Hardns. Turbidity L-Sp. Cond TDS G wv H co O O T Vol Sol ncr/1 mq/1 mg/1 mq/1 NTU umhos/cm mq/1 mq/1 02/09/95 1230 50.602 0.028 115 154.0 13.0 301 194 03/15/95 1530 52.648 <0.01 125 172.2 14.5 353 222 03/30/95 1749 63.012 0.017 128 176.4 226 14 05/10/95 1422 74.15 0.043 136 200.3 260 3 05/24/95 1329 84.28 0.096 151 212.6 300 6 06/07/95 1330 85.38 0.07 146 201.9 292 7 06/21/95 1316 78.39 0.05 142 199.4 282 4 07/19/95 1413 72.79 0.05 134 170.5 256 5 08/24/95 1546 70.0 0.08 144 189.4 272 4 09/20/95 0904 67.0 0.04 142 186.9 260 12 10/25/95 1336 72.11 0.02 155 195.3 262 5 11/15/95 1330 65.6 0.03 158 188.7 248 8 01/03/96 0733 129.1 0.02 216 276.2 404 <9 02/07/96 0734 72.4 0.04 215 287.0 420 4 03/20/96 0738 117.5 0.04 187 244.4 340 5 04/17/96 1234 84.9 0.02 171 218.5 288 0 05/01/96 0740 104.2 0.03 180 234.8 312 4 05/13/96 1247 108.1 0.01 177 245.1 336 5 05/29/96 1415 150.9 0.03 203 273.7 468 7 06/12/96 0734 98.9 0.04 179 219.1 346 <9 Averages 85.10 <0.038 160 212.3 13.75 327 299 < 6 ------- Division of Water Quality 11/22/96 13:14 ADH Page: 8 Lab Analysis Results Inquiry Storet: 493708 03 County: 24 OURAY PARK CANAL ® HWY 40 XING Date Time Chlor-A uq/1 D-Aluminum ug/1 RSS mq/1 D-N02+N03 mq/1 D-Mercury uq/1 D-T Phos. mg/1 02/09/95 1230 36.0 0.136 <0.2 0.019 03/15/95 1530 47.0 0.116 <0.2 <0.01 03/30/95 1749 118 0.048 <0.01 05/10/95 1422 41 0.02 0.016 05/24/95 1329 79 0.06 <0.01 06/07/95 1330 56 0.05 0.01 06/21/95 1316 48 <0.02 0.01 07/19/95 1413 50.0 35 0.03 <0.2 0.02 08/24/95 1546 68 <0.02 0.05 09/20/95 0904 42 0.03 0.01 10/25/95 1336 33.0 21 0.8 <0.2 <0.01 11/15/95 1330 53 0.05 <0.01 01/03/96 0733 14 0.23 0.03 02/07/96 0734 36.0 22 0.19 <0.2 0.01 03/20/96 0738 26 0.08 <0.01 04/17/96 1234 4 <0.02 <0.01 05/01/96 0740 <30.0 28 0.07 <0.2 <0.01 05/13/96 1247 51 <0.02 0.01 05/29/96 1415 54 <0.02 0.01 06/12/96 0734 21 <0.02 0.01 Averages <38.7 43 <0.10 <0.2 <0.014 ------- Division of Water Quality 11/22/96 13:14 ADH Page: 9 t ah Analysis Results Inquiry storet: 493709 03 County: 24 OURAY PARK CANAL BL COTTCNWCIOD RES Date Time Lab No Samp Type F-Tenp F-pH F-D.O. F-Sp.Cond. Transp. Depth Peg C mg/1 umhos/cm m m 02/09/95 1245 C9501375 04 2.4 7.6 11.1 353 03/15/95 1450 C9502569 04 5.1 8.4 10.6 337 03/30/95 1724 C9503145 04 6.6 8.4 10.1 330 05/10/95 1446 C9504586 04 10.1 8.1 9.2 370 05/24/95 1352 C9505172 04 11.2 8.4 8.6 383 06/07/95 1305 C9505607 04 12.3 8.4 8.6 383 06/21/95 1340 C9506281 04 13.5 8.1 8.2 414 07/12/95 1827 C9507293 04 15.6 8.1 7.8 411 08/24/95 1609 C9509161 04 19.0 7.9 7.6 408 09/20/95 0841 C9510213 04 17.7 8.4 6.2 385 10/25/95 1306 C9511181 04 10.6 8.4 9.1 383 11/14/95 1657 C9511787 04 6.8 8.4 9.8 416 01/03/96 1253 C9600116 04 3.53 8.54 9.21 444 02/06/96 0757 C9600982 04 3.1 8.3 10.1 497 03/20/96 0755 C9601924 04 5.43 8.38 8.82 519 04/17/96 1254 C9602574 04 7.9 8.4 11.3 494 05/01/96 0809 C9603062 04 10.26 8.51 8.18 494 05/14/96 1311 C9603477 04 11.58 8.52 8.16 518 05/29/96 1353 C9604010 04 12.2 8.4 8.9 497 06/11/96 1738 C9604761 04 12.83 8.25 8.19 530 Averages 9.9 8.3 9.0 428 Date Time Flow, cfs T.Sus.Sol T.K.N. Sulfide Anmonia N D-Arsenic D-Barium D-Cadmium mq/1 mq/1 mq/1 mq/1 uq/1 uq/1 uq/1 02/09/95 1245 23.9 8.0 0.32 <0.05 <5.0 97.0 <1.0 03/15/95 1450 25.0 4.0 0.24 <0.05 <5.0 95.0 <1.0 03/30/95 1724 26.0 10.0 <0.1 <0.05 05/10/95 1446 22.0 6.0 0.2 0.06 05/24/95 1352 40.0 4.0 0.15 0.05 06/07/95 1305 40.0 <4.0 0.46 0.08 06/21/95 1340 23.0 5.0 0.18 <0.05 07/12/95 1827 41.0 6.0 0.33 <0.05 08/24/95 1609 30.0 15.0 0.46 0.054 09/20/95 0841 28.0 10.0 0.61 0.056 10/25/95 1306 35.0 19.0 0.2 0.136 <5.0 110.0 <1.0 11/14/95 1657 36.0 <4.0 0.38 <0.05 01/03/96 1253 3.5 8.0 0.87 <0.05 02/06/96 0757 4.0 11.0 LO 0.051 <5.0 110.0 <1.0 03/20/96 0755 12.0 5.0 0.52 0.065 04/17/96 1254 10.0 <4.0 NO <0.05 ------- Division of Water Quality 11/22/96 13:14 ADH Page: 10 Lab Analysis Results Inquiry Storet: 493709 03 County: 24 OURAY PARK CANAL BL COTTCNWOCD RES 05/01/96 0809 32.0 H 1 to 1 O 1 0.275 <0.05 <5.0 106.0 <1.0 05/14/96 1311 25.0 4.0 0.45 <0.05 05/29/96 1353 6.5 00 00 0.367 <0.05 06/11/96 1738 20.0 7.2 0.265 0.071 Averages 24.1 <7.75 <0.32 <0.059 <5.0 103.6 <1.0 Date Time D-Calcium D-Chromium D-Copper mq/1 ug/1 uq/1 D-Iran uq/1 D-Lead D-Magnesura ug/1 mq/1 D-Mangan D-Potassum uq/1 mq/1 02/09/95 1245 38 <5.0 <12.0 28.0 <3.0 15 5.8 1.2 03/15/95 1450 40 <5.0 <12.0 <20.0 <3.0 15 <5.0 1.3 03/30/95 1724 40 16 1.5 05/10/95 1446 43 20 1.8 05/24/95 1352 42 19 1.7 06/07/95 1305 42 20 1.7 06/21/95 1340 42 22 1.9 07/12/95 1827 44 23 2.2 08/24/95 1609 37 21 2.4 09/20/95 0841 36 21 2.4 10/25/95 1306 45 <5.0 <12.0 25.0 3.0 24 5.7 2.4 11/14/95 1657 40 21 1.8 01/03/96 1253 44 24 1.9 02/06/96 0757 48 <5.0 <12.0 26.0 <3.0 27 18.0 2 03/20/96 0755 46.9 26.6 1.94 04/17/96 1254 46 25.5 1.9 05/01/96 0809 49.7 <5.0 <12.0 <20.0 <3.0 26 <5.0 2 05/14/96 1311 51.3 28 2.23 05/29/96 1353 48.9 26.1 1.9 06/11/96 1738 41.6 22.5 1.4 Averages 43 <5.0 <12.0 <23.8 <3.0 22 <7.9 2 Date Time D-Selenium D-Silver D-Sodium D-Zinc Bicarbnate Carto. Diax Carbonate SI02 uq/1 uq/1 mq/1 uq/1 mq/1 mq/1 mq/1 mq/1 02/09/95 1245 <1.0 <2.0 8.4 <30.0 144 2 0 03/15/95 1450 <1.0 <2.0 8.9 <30.0 146 1 0 03/30/95 1724 9.5 6.8 05/10/95 1446 13.0 7.7 05/24/95 1352 12.0 7.3 06/07/95 1305 12.0 8.0 06/21/95 1340 14.0 7.3 ------- Division of Water Quality "i 1/22/96 13:14 MDH Page: 11 Lab Analysis Results Inquiry Storet: 493709 03 County: 24 OURAY PARK CANAL BL COITCNWXJD RES 07/12/95 1827 16.0 8.0 08/24/95 1609 15.0 8.0 09/20/95 0841 15.0 8.4 10/25/95 1306 <1.0 <2.0 23.0 <30.0 183 2 0 8.0 11/14/95 1657 14.0 188 1 0 8.0 01/03/96 1253 16.0 193 1 0 8.7 02/06/96 0757 <1.0 <2.0 17.0 <30.0 214 0 10.0 03/20/96 0755 18.4 212 1 0 9.0 04/17/96 1254 17.6 208 1 0 8.0 05/01/96 0809 <1.0 <2.0 17.6 <30.0 216 1 0 9.0 05/14/96 1311 18.9 214 1 0 8.0 05/29/96 1353 18.2 210 1 0 9.1 06/11/96 1738 16.4 216 3 0 9.0 Averages <1.0 <2.0 15.0 <30.0 195 1 0.00 8.24 Date Time Sulfate T. Phos. Tot. Alk. T. Hardns. Turbidity L-Sp. Cond IDS 3 180C T Vol Sol mq/1 mq/1 mq/1 mq/1 NTU umhos/cm mq/1 mq/1 02/09/95 1245 51.03 0.01 118 156.5 4.0 306 202 03/15/95 1450 50.502 <0.01 120 161.5 2.5 331 200 03/30/95 1724 56.521 <0.01 125 165.6 212 2 05/10/95 1446 68.93 0.014 131 189.6 244 1 05/24/95 1352 67.58 0.019 131 183.0 236 1 06/07/95 1305 72.34 0.02 133 187.1 242 2 06/21/95 1340 77.42 0.02 135 195.3 252 1 07/12/95 1827 77.01 0.02 142 204 .4 278 2 08/24/95 1609 64.0 0.06 131 178.7 246 2 09/20/95 0841 66.0 0.02 134 176.2 242 8 10/25/95 1306 74.95 0.03 150 211.0 282 8 11/14/95 1657 62.7 <0.01 154 186.2 246 4 01/03/96 1253 70.3 0.01 158 208.5 286 <9 02/06/96 0757 56.7 0.01 175 230.9 308 2 03/20/96 0755 92.8 0.02 174 226.5 302 2 04/17/96 1254 98.1 0.01 171 219.7 288 0 05/01/96 0809 86.6 0.01 177 231.0 304 1 05/14/96 1311 97.2 0.04 175 243.2 320 0 05/29/96 1353 76.9 0.01 172 229.4 314 0 06/11/96 1738 94.9 0.02 177 196.4 350 <9 Averages 73.12 <0.019 149 199.0 3.25 319 268 < 3 ------- Division of Water Quality 1/22/96 13:14 ADH Page: 12 Lab Analysis Results Inquiry storet: 493709 03 County: 24 OURAY PARK CANAL BL COTTONWOOD RES Date Time Chlor-A D-Aluminum RSS D-N02+N03 D-Mercury D-T Phos. uq/1 ug/1 mq/1 mq/1 Uq/1 mq/1 02/09/95 1245 <30.0 0.381 <0.2 <0.01 03/15/95 1450 <30.0 0.084 <0.2 <0.01 03/30/95 1724 8 0.075 <0.01 05/10/95 1446 5 0.05 0.015 05/24/95 1352 3 0.04 <0.01 06/07/95 1305 <3 0.03 <0.01 06/21/95 1340 4 <0.02 0.01 07/12/95 1827 4 0.09 0.01 08/24/95 1609 13 0.1 0.04 09/20/95 0841 <3 0.05 0.01 10/25/95 1306 30.0 11 0.06 <0.2 0.01 11/14/95 1657 <3 0.05 <0.01 01/03/96 1253 <3 0.09 <0.01 02/06/96 0757 <30.0 9 0.74 <0.2 <0.01 03/20/96 0755 3 0.06 <0.01 04/17/96 1254 4 0.07 <0.01 05/01/96 0809 <30.0 11 0.11 <0.2 <0.01 05/14/96 1311 4 <0.02 <0.01 05/29/96 1353 9 <0.02 <0.01 06/11/96 1738 <3 <0.02 0.01 Averages <30.0 <0.11 <0.2 <0.012 ------- Division of Water Quality 11/22/96 13:14 ADH Page: 13 Lab Analysis Results Inquiry Storet: 493712 03 County: 24 OURAY PARK CANAL AB PELICAN LAKE Date Time Lab No Sanp Type F-Tenp F-pH F-D.O. F-Sp.Cand. Transp. Depth Peg C nq/1 umhos/cm m m 02/08/95 1730 C9501373 04 3.4 7.8 10.1 347 03/10/95 1330 C9502376 04 8.0 8.4 10.4 324 03/15/95 1708 C9502566 04 7.8 8.4 9.9 316 03/30/95 1516 C9503146 04 9.2 8.4 9.7 325 05/10/95 1027 C9504587 04 13.6 8.2 8.8 459 05/24/95 1014 C9505173 04 11.6 8.4 9.6 476 06/07/95 1013 C9505608 04 14.2 8.6 8.3 443 06/21/95 C9506282 04 13.4 8.4 9.0 450 07/19/95 1040 C9507666 04 18.7 8.4 7.7 408 08/24/95 0943 C9509160 04 19.8 8.3 7.5 573 09/20/95 0805 C9510214 04 15.6 8.9 7.8 454 10/25/95 1149 C9511182 04 7.4 8.3 9.8 405 11/15/95 1133 C9511788 04 5.6 3.4 10.7 434 01/03/96 1402 C9600117 04 0 8.11 10.54 707 02/07/96 1239 C9600993 04 0.1 8.4 11.7 732 03/20/96 1030 C9601925 04 6.06 8.5 8.42 518 04/17/96 1108 C9602575 04 9.1 8.6 11.7 624 05/01/96 1029 C9603063 04 11.36 8.54 9.29 1081 05/14/96 1130 C9603478 04 19.57 8.72 9.43 877 05/29/96 1047 C9604011 04 16.8 8.6 11.3 779 06/12/96 1128 C9604762 04 23.0 8.6 10.3 2417 Averages 11.2 8.2 9.6 626 Date Time Flow, cfs T.Sus.Sol T.K.N. Sulfide Amronia N D-Arsenic D-Barium D-Cadmium mq/1 mq/1 mq/1 mq/1 uq/1 uq/1 uq/1 02/08/95 1730 38.7 56.0 0.26 <0.05 <5.0 95.0 <1.0 03/10/95 1330 40.0 163.0 <0.05 03/15/95 1708 67.5 190.0 0.42 <0.05 03/30/95 1516 17.0 100.0 0.2 <0.05 05/10/95 1027 4.0 78.0 0.4 <0.05 05/24/95 1014 27.0 314.0 0.88 <0.05 06/07/95 1013 25.6 208.0 0.87 0.1 06/21/95 37.7 165.0 0.61 <0.05 07/19/95 1040 39.0 187.0 1.13 0.132 <5.0 100.0 <1.0 08/24/95 0943 7.0 114.0 1.1 0.152 09/20/95 0805 12.0 182.0 1.14 0.07 10/25/95 1149 58.0 65.0 0.3 <0.05 <5.0 110.0 <1.0 11/15/95 1133 43.8 76.0 0.35 0.089 01/03/96 1402 6.0 32.0 0.67 <0.05 02/07/96 1239 17.0 19.0 0.113 <5.0 110.0 <1.0 ------- Division of Water Quality 11/22/96 13:14 ADH Page: 14 Lab Analysis Results Inquiry storet: 493712 03 County: 24 OURAY PARK CANAL AB PELICAN LAKE 03/20/96 1030 1 o 1 (NJ 1 rH 73.0 0.82 0.063 04/17/96 1108 9.0 41.0 NO <0.05 05/01/96 1029 2.5 14.8 0.594 0.055 <5.0 102.0 <1.0 05/14/96 1130 2.5 10.0 0.609 <0.05 05/29/96 1047 4.6 34.0 0.699 <0.05 06/12/96 1128 2.2 19.6 3.107 0.076 Averages 22.5 101.97 0.75 <0.069 <5.0 103.4 <1.0 Date Time D-Calcium D-Chromium D-Ccpper D-Iron D-Lead D-Magnesum D-Mangan D-Potassum mq/1 uq/1 uq/1 uq/1 uq/1 mq/1 uq/1 mq/1 02/08/95 1730 36 <5.0 <12.0 38.0 <3.0 15 <5.0 1.4 03/10/95 1330 03/15/95 1708 35 14 1.3 03/30/95 1516 36 16 1.5 05/10/95 1027 45 26 1.9 05/24/95 1014 44 24 2.4 06/07/95 1013 44 23 2.4 06/21/95 41 23 2.5 07/19/95 1040 37 <5.0 <12.0 54.0 <3.0 19 <5.0 2.1 08/24/95 0943 45 29 4.1 09/20/95 0805 40 27 3.1 10/25/95 1149 42 <5.0 <12.0 36.0 <3.0 23 5.1 2.2 11/15/95 1133 41 22 1.9 01/03/96 1402 54 39 2.4 02/07/96 1239 56 <5.0 <12.0 <20.0 <3.0 41 <5.0 2.6 03/20/96 1030 41.5 24.5 1.84 04/17/96 1108 46.9 31.2 2.2 05/01/96 1029 61.1 <5.0 <12.0 <20.0 <3.0 49.8 24.4 2.3 05/14/96 1130 56.3 45.8 2.26 05/29/96 1047 51.6 37.3 3.5 06/12/96 1128 69 58.2 5 Averages 46 <5.0 <12.0 <33.6 <3.0 29 <8.9 2 Date Time D-Selenium D-Silver D-Sodium D-Zinc Bicarbnate Carb. Diax Carbonate SI02 uq/1 uq/1 mq/1 uq/1 mq/1 mg/1 mq/1 mq/1 02/08/95 1730 <1.0 <2.0 10.0 <30.0 138 1 0 03/10/95 1330 03/15/95 1708 11.0 134 1 0 03/30/95 1516 12.0 6.9 ------- Division of Water Quality 11/22/96 13:14 ADH Page: 15 Lab Analysis Results Inquiry Storet: 493712 03 County: 24 OURAY PARK CANAL AB PELICAN LAKE 05/10/95 1027 27.0 7.1 05/24/95 1014 23.0 7.5 06/07/95 1013 23.0 8.0 06/21/95 22.0 7.2 07/19/95 1040 <1.0 <2.0 18.0 <30.0 7.3 08/24/95 0943 38.0 9.0 09/20/95 0805 33.0 8.3 10/25/95 1149 <1.0 <2.0 18.0 <30.0 189 2 0 8.0 11/15/95 1133 19.0 198 2 0 8.0 01/03/96 1402 47.0 290 2 0 11.2 02/07/96 1239 <1.0 <2.0 42.0 <30.0 290 2 0 12.0 03/20/96 1030 23.8 189 1 0 8.0 04/17/96 1108 38.4 240 1 0 7.0 05/01/96 1029 2.0 <2.0 106.0 <30.0 388 2 0 6.0 05/14/96 1130 76.0 328 1 0 7.0 05/29/96 1047 57.8 288 2 0 9.7 06/12/96 1128 225.0 376 4 0 10.0 Averages <1.2 <2.0 43.5 <30.0 254 2 0.00 8.23 Date Time Sulfate T. Phos. Tot. Alk. T. Hardns. Turbidity L-Sp. Cand TDS ( i 180C T Vol Sol mq/1 mq/1 mg/1 mq/1 NTO umhos/cm mq/1 mq/1 02/08/95 1730 51.537 0.071 113 151.5 35.0 294 206 03/10/95 1330 0.123 202 10 03/15/95 1708 47.154 <0.01 110 144.9 47.0 309 190 03/30/95 1516 57.724 0.07 116 155.7 212 8 05/10/95 1027 88.34 0.072 156 219.3 306 4 05/24/95 1014 93.4 0.304 161 208.5 302 26 06/07/95 1013 89.58 0.16 172 204.4 302 16 06/21/95 81.65 0.11 147 196.9 280 8 07/19/95 1040 66.25 0.11 136 170.5 252 12 08/24/95 0943 87.0 0.09 180 231.6 360 9 09/20/95 0805 89.0 0.17 164 210.9 326 30 10/25/95 1149 77.82 0.06 155 199.4 278 8 11/15/95 1133 72.7 0.05 162 192.8 266 10 01/03/96 1402 159.9 0.03 238 295.2 450 <9 02/07/96 1239 68.7 0.02 238 308.4 460 5 03/20/96 1030 96. B 0.03 155 204.3 284 11 04/17/96 1108 138.2 0.01 197 245.4 374 4 05/01/96 1029 237.1 0.03 318 357.3 668 2 05/14/96 1130 187.6 0.04 269 328.9 542 0 05/29/96 1047 145.0 0.08 236 282.2 478 3 06/12/96 1128 304.5 0.09 308 411.6 1208 <9 ------- Division of Water Quality 11/22/96 13:14 ADH Page: 16 Lab Analysis Results Inquiry storet: 493712 03 County: 24 OURAY PARK CANAL AB PELICAN LAKE Averages 112.00 <0.082 187 236.0 41.00 302 378 <10 Date Time Chlor-A D-Aluminum RSS D-N02+N03 D-Mercury D-T Phos. ug/1 ug/1 mq/1 mq/1 uq/1 mq/1 02/08/95 1730 50.0 0.133 <0.2 0.012 03/10/95 1330 153 0.065 <0.01 03/15/95 1708 <0.02 <0.01 03/30/95 1516 92 0.067 <0.01 05/10/95 1027 74 0.09 0.02 05/24/95 1014 288 0.09 0.014 06/07/95 1013 192 0.05 0.01 06/21/95 157 <0.02 0.01 07/19/95 1040 47.0 175 0.36 <0.2 0.02 08/24/95 0943 105 0.2 0.04 09/20/95 0805 152 0.17 0.03 10/25/95 1149 35.0 57 0.05 <0.2 0.01 11/15/95 1133 66 0.08 <0.01 01/03/96 1402 23 0.48 0.01 02/07/96 1239 <30.0 14 <0.2 03/20/96 1030 62 0.06 <0.01 04/17/96 1108 37 0.09 0.01 05/01/96 1029 <30.0 13 0.5 <0.2 0.01 05/14/96 1130 10 0.32 0.01 05/29/96 1047 31 0.18 0.01 06/12/96 1128 11 1.35 0.03 Averages <38.4 90 <0.22 <0.2 <0.015 ------- Division of Water Quality 11/22/96 13:14 ADH Page: 59 Lab Analysis Results Inquiry storet: 593241 03 County: 24 BR0U3H RES SPILLWAY Date Time Lab No Sairp Type F-Tenp F-pH F-D.O. F-Sp.Cond. Transp. Depth Peg C mq/1 umhos/cm ra ra 03/31/95 1042 C9503155 04 8.0 8.3 9.7 209 04/25/95 1200 C9504053 10 11/15/95 C9511811 10 01/03/96 1500 C9600126 10 02/07/96 1430 C9601018 10 03/20/96 1145 C9601935 10 04/17/96 0751 C9602539 04 9.73 8.57 10.85 311 05/01/96 1346 C9603071 04 11.51 8.59 8.14 298 05/14/96 0906 C9603491 10 05/29/96 1215 C9604019 04 15.4 8.8 7.7 283 06/12/96 1320 C9604771 10 Averages 11.2 8.6 9.1 275 Date Time Flow, cfs T.Sua.Sol T.K.N. Sulfide Amronia N D-Arsenic D-Barium D-Cadmium mq/1 mq/1 mq/1 mq/1 uq/1 uq/1 uq/1 03/31/95 1042 0.72 <4.0 0.1 <0.05 04/25/95 1200 11/15/95 01/03/96 1500 02/07/96 1430 03/20/96 1145 04/17/96 0751 2.0 <4.0 <0.05 05/01/96 1346 10.0 13.2 <0.05 05/14/96 0906 05/29/96 1215 8.4 <4.0 <0.05 06/12/96 1320 Averages 5.3 <6.30 0.10 <0.050 <5.0 108.0 <1.0 Date Time D-Calcium D-Chromium D-Copper D-Iron D-Lead D-Magnesum D-Mangan D-Potassum mq/1 uq/1 uq/1 uq/1 uq/1 mq/1 uq/1 mg/1 03/31/95 1042 24 8.8 04/25/95 1200 11/15/95 01/03/96 1500 02/07/96 1430 ------- Division of Water Quality 11/22/96 13:14 ADH Page: 60 Lab Analysis Results Inquiry Storet: 593241 03 County: 24 BROUGH RES SPILLWAY 03/20/96 1145 04/17/96 0751 29.2 12.7 1.3 05/01/96 1346 31.5 <5.0 <12.0 <20.0 <3.0 12.2 <5.0 1.2 05/14/96 0906 05/29/96 1215 26.3 9.54 <1 06/12/96 1320 Averages 28 <5.0 <12.0 <20.0 <3.0 11 <5.0 < 1 Date Time D-Selenium D-Silver D-Sodium D-Zinc Bicartanate Carb. Diax Carbonate SI02 uq/1 ug/1 mq/1 uq/1 mq/1 mq/1 mq/1 mq/1 03/31/95 1042 6.8 04/25/95 1200 11/15/95 01/03/96 1500 02/07/96 1430 03/20/96 1145 04/17/96 0751 9.6 118 1 0 05/01/96 1346 <1.0 <2.0 9.5 <30.0 118 1 0 05/14/96 0906 05/29/96 1215 8.29 106 1 0 06/12/96 1320 Averages <1.0 <2.0 8.5 <30.0 114 1 0.00 6.20 Date Time Sulfate T. Phos. Tot. Alk. T. Hardns. Turbidity L-Sp. Oand TOS @ 180C T Vol Sol mq/1 mq/1 mq/1 mq/1 NTU umhos/cm mq/1 mq/1 03/31/95 1042 30.446 <0.01 72 96.1 126 04/25/95 1200 11/15/95 01/03/96 1500 02/07/96 1430 03/20/96 1145 04/17/96 0751 49.3 0.01 97 125.1 0.8 306 176 05/01/96 1346 50.5 0.01 97 128.8 2.9 300 180 05/14/96 0906 05/29/96 1215 44.2 0.17 87 104.9 6.16 263 162 06/12/96 1320 ------- Division of Water Quality 11/22/96 13:14 ADHPage: 61 Lab Analysis Results Inquiry storet: 593241 03 County: 24 BRCU3H RES SPILLWAY Averages 43.61 <0.050 88 113.7 3.29 290 161 2 Date Time Chlor-A D-Aluminum uq/1 ug/1 RSS D-N02+N03 D-Mercury D-T Phos. np/1 mq/1 uq/1 mq/1 03/31/95 04/25/95 11/15/95 01/03/96 02/07/96 03/20/96 04/17/96 05/01/96 05/14/96 05/29/96 06/12/96 1042 1200 1500 1430 1145 0751 1346 0906 1215 1320 <3 <0.02 <0.01 <30.0 <0.02 <0.02 <0.02 <0.2 <0.01 0.01 0.01 Averages <30.0 <3 <0.02 <0.2 <0.010 ------- Appendix D Fisheries Report ------- PELICAN LAKE 1995/1996 Water Quality Study Final Report Edward K. Johnson Regional Aquatic Biologist Chad W. Crosby Regional Aquatic Program Manager Utah Department of Natural Resources Division of Wildlife Resources 1596 West North Temple Salt Lake City, Utah 84116 An Equal Opportunity Employer John Kimball Director ------- Executive Summary An in-depth water quality and fishery study was conducted at Pelican Lake, Uintah County, Utah over a 2 year period (1995 - 1996) . Pelican Lake is a warmwater irrigation reservoir that covers 1,680 surface acres (15,850 acre feet) at full storage. The lake gained a reputation as an outstanding bluegill fishery in the 1970's, and also had a good largemouth bass population. It also held black bullhead and white sucker. Green sunfish first appeared in Pelican Lake during 1994 sampling. The overall fish population began to decline in the early 1980's, and by 1990 only a few juvenile largemouth bass were captured during annual trend netting. This in-depth study was proposed to determine if certain water quality parameters are contributing to the warmwater fishery decline in Pelican Lake. It was a cooperative effort of federal, state and local agencies and private angling groups. The study was funded with Federal Clean Water Act monies and a matching grant from the Utah State Division of Community Development. The Utah State Division of Water Quality took responsibility for water quality sampling. The Utah Division of Wildlife Resources (UDWR) sampled the fishery, including trend gill netting, winter mortality counts, seine net sampling, creel census, piscivorous bird counts and stomach sampling, and fish tissue sampling for contaminants. This portion of the report is a summary of all the sampling done by the UDWR. The following is a brief synopsis of the findings of this study; 1. The mean gill net catch per unit effort (fish per net hour) increased from 1995 to 1996 for most species; largemouth bass (0.29 - 0.47), bluegill (0.13 - 0.21), black bullhead(0.05 - 0.13), and green sunfish (0.01 - 0.04). However, white sucker relative abundance decreased slightly (0.04 - 0.01). Increases in relative abundance are likely due to high water years during the study, particularly during the winter months. 2. No winter mortality was observed either year. Abundant water in 1995 and 1996 reduced anoxia during the winter. 3. Successful reproduction of largemouth bass and bluegill was documented in the seine net sampling both years. 4. The number of anglers decreased from 1995 to 1996 (534 - 228) while the number of angler hours were nearly identical (1404 - 1422). Catch rates significantly increased (0.61 fish/hour - 2.35 fish/hour) between the two years. Drawdowns in 1996 limited boat access in the middle of summer, which explains the decreased number of anglers. The high catch rates in 1996 would account for the increased hours per angler. ------- 5. Piscivorous bird counts revealed high use by eared grebes and western grebes, and low use by great blue herons, cormorants and pied-billed grebes. Great blue herons, cormorants and one western grebe were found to be consuming fish. Due to the small number of piscivorous bird stomachs sampled, an estimate of annual consumption was not calculated. However, the fish population at Pelican Lake increased throughout the study despite moderate and increasing numbers of piscivorous birds. It is apparent that bird predation at Pelican Lake is not suppressing the warm-water fish population at this time. 6. Fish tissue analysis on largemouth bass, bluegill, black bullhead and white sucker did not indicate any organic compound contamination. Heavy metal analysis revealed trace amounts of mercury and selenium. However, the extremely low levels of these metals were determined to have no effect on the fish population. Mercury and selenium occur naturally in the drainage. In summary, Pelican Lake fishery populations positively increased in response to higher storage levels associated with wetter water years. However, the fishery will likely be at risk during the next drought cycle. Introduction Pelican Lake is a warm-water irrigation reservoir located in southwestern Uintah County in Northeastern Utah. The lake covers 1,680 surface acres (15,850 acre feet) at full storage, at an elevation of 4,803.75 feet. It has a conservation pool owned by the UDWR. The conservation pool is at an elevation of 4,794.25 feet and is 1,375 surface acres (5,500 acre feet). Bluegill and largemouth bass were first introduced into Pelican Lake in 1954 by the Utah Fish and Game with fish purchased by the Randlett Lions Club. Prior to the 1960's, the lake received little angling pressure. During the mid 1960's, an outlet structure was built, the reservoir storage was increased and a conservation pool was purchased by the UDWR. The reservoir gained a reputation as an outstanding bluegill fishery in the 1970's when limits of half pound bluegill were common. Burdick (1979) estimated an annual harvest of 22,469 to 58,277 bluegill from 1975 to 1977. The mean length and harvest of bluegill began to decline in the early 1980"s. By 1990, there were no bluegill captured during summer trend netting. The largemouth bass population had also declined by 1990. White suckers and black bullhead, which had been abundant in the trend netting, were no longer captured (UDWR Fish Files 1954-1990). ------- In 1994, a federal grant was applied for under Section 314 of the Clean Water Act to initiate an in-depth water quality study at Pelican. The purpose of this study was to determine: 1. If water quality was a factor in the decline of the Pelican Lake fishery. 2. The current relative abundance of fish species in Pelican Lake. 3. The annual winter mortality of fish in Pelican Lake. 4. The spawning success of sportfish in Pelican Lake. 5. The current angler utilization of the Pelican Lake fishery. 6. The number and species of piscivorous birds at Pelican Lake. 7. Which bird species are consuming fish at Pelican Lake. 8. The heavy metal and organic compound content of Pelican Lake fish tissues. The Pelican Lake Water Quality study was approved and is a cooperative effort involving the UDWR, the Utah State Division of Water Quality, the Bureau of Land Management, the U.S. Fish and Wildlife Service, the Utah BASS Federation, the Uintah Basin Bassmasters and the Ouray Park Irrigation Company. A $100,000 grant was received from the Federal 314 funds, and a matching grant of $43,000 was received from the Utah State Division of Community Development. The water quality study began on December 1, 1994 and ended November 30, 1996. UDWR biologists (Northeastern Region) collected fishery and angler use information, while the Division of Water Quality collected water quality data. In conjunction with the water quality study, UDWR biologists: 1. Increased gillnet sampling from 1 to 3 times a year. 2. Conducted a winter mortality count during the spring. 3. Conducted fall seining in 1995 and 1996. 4. Conducted a comprehensive creel census in 1995 and 1996. 5. Conducted piscivorous bird counts in conjunction with the ------- creel census. 6. Collected piscivorous birds and did stomach analysis. 7. Collected fish tissue samples for lab analysis to determine heavy metal and organic compound content. This report is a summary of all the 1995 and 1996 sampling. Methods Gillnet Sampling Pelican Lake was sampled 3 times with gillnets in 1995 and 1996. Experimental floating gillnets with 5, 25 X 6 foot panels made up of 1/2, 3/4, 1, 1 1/2 and 2 inch mesh were used. Nets were set overnight on 6-7-95, 7-10-95 and 9-7-95; and 5-22-96, 7-2-96 and 8-5-96. All nets were set perpendicular to the shoreline with the small mesh end set at the shore or weedline. Nets were weighted with concrete blocks on each end attached to the lead line. Wood floats were attached to the floatline by a rope on each end of the net. Nets were located in 6 standard trend net locations on each sampling, plus several additional locations in 1995 (Figure 1). Fish captured were identified, weighed, measured and examined for visceral fat content. Largemouth bass and bluegill were autopsied using the Health Condition Profile method (Goede, 1993). Winter Mortality Transect A mortality transect (0.6 miles long) is conducted each spring at Pelican Lake, immediately after the ice disappears in approximately mid-March. The prevailing northwesterly wind at Pelican Lake concentrates winter killed fish along the lakes eastern shoreline. The mortality count was made by walking along the dike of State Road 88 on the east shore and recording the numbers and species of all dead fish observed (Figure 1). The annual mortality transects were conducted on 3-7-95 and 3-12-96. ------- Pelican Lake * 1 Inflow Canal £ = Standard Trend Net Locations Outflow Canal State Road J •¦= Additional Net Locations in 1995 Figure 1. Trend net locations for Pelican Lake, Utah: 1995 and 1996 . ------- Seining Seine sampling was conducted at Pelican Lake on 9-26-95 and 1-4-96. The seine used measured 20 X 4 feet and had 1/8 inch mesh. Seining was done with a man holding one end of the net at the shoreline. The second man walked the other end of the net out perpendicular to the shoreline, then looped back to the shore and the seine was pulled onto the shore. Fish captured were identified, weighed, measured and released. Seine haul locations were restricted to accessible shoreline areas and were not evenly distributed (Figure 2). Creel Census Stratified random creel census was conducted at Pelican Lake from May through October in 1995 and 1996 (Neuhold and Lu 1957). The sampling schedule was stratified into week days, weekend days and holidays. The sampling days within each strata, except holidays, were randomly selected. There were 7 week days and 3 weekend days sampled every month. In addition, Memorial Day, Fourth of July, Pioneer Day, Labor Day and the Columbus Day holidays were also sampled. Instantaneous angler counts were randomly selected. Each sample day, 3 angler counts were made at 2 hour intervals. Anglers were interviewed between counts to determine the number of anglers per party, time spent fishing, whether completed fishing or not, the number and species of fish kept and released, and when possible, the length and weight of fish harvested. The creel data was analyzed using the C-SAP program developed by the Colorado Division of Wildlife (Babcock, 1988) . Piscivorous Bird Count A piscivorous bird count was conducted at Pelican Lake from May through October in 1995 and 1996. Bird counts were taken in conjunction with the creel census, therefore the sampling days were also randomly selected (except holidays). A single comprehensive count was made each day of the creel census, identifying numbers and species of piscivorous birds. The creel clerk would count from shore and boat using binoculars and a spotting scope. Bird use estimates were defined in terms of total bird-days. A bird-day was equivalent to 1 bird on the lake for 1 day. Bird-days were estimated by calculating a monthly mean number of birds per count and multiplying it by the number of days in that month (Ottenbacher, Hepworth and Berg 1994) . Bird use estimates were compiled using the QuatroPro spreadsheet program. ------- Pelican Lake 1 Inflow Canal I = Set Outflow.Canal State Road 88 Seine net locations* Figure 2. Seine net locations for Pelican 'Lake, Utah: 1995 and 1996 . ------- Piscivorous Bird Stomach Analysis Data on piscivorous bird diets were collected at Pelican Lake in late August, 1996. There were 4 blue herons, 5 cormorants, 5 eared grebes and 5 western grebes collected. Pied-billed grebes were present in such low numbers at Pelican, none were collected for stomach analysis. Birds were collected using shotguns, and stomachs were removed and preserved in formalin. Stomach contents were later analyzed in the lab. Stomach contents were identified to obvious fish species, or as unidentified fish remains or other matter. Total length was obtained from whole fish. Data were summarized for each individual bird sampled as species, date collected, time collected, stomach contents and percent of total contents. Due to the small number of bird stomachs sampled, the data were not used to make estimates of annual fish consumption by piscivorous birds at Pelican Lake. The objective of the stomach sampling was to determine which bird species were utilizing fish as forage at the lake. Fish Tissue Sampling Fish tissue samples were taken from the dominant species in Pelican Lake. There were 9 bluegill, 5 largemouth bass, 3 black bullhead and 5 white sucker preserved from summer trend netting in 1995. Fish were individually wrapped in plastic Ziplock bags, labeled and frozen. The frozen fish samples were placed in a cooler with dry ice and shipped to Hazelton Environmental Services (Madison, WI) on 2-14-96. Pelican Lake fish tissue samples were analyzed for heavy metal and organic compound content. Results Gillnet Sampling Sample 1, 1995 Five floating gillnets were set in Pelican Lake on 6-7-95 at 15:30 hours and pulled on 6-8-95 at 09:45 hours (91.25 total net hours). The sixth net was damaged and could not be used. The water temperature was 64'F at the time of sampling. The relative abundance indices were 50% largemouth bass, 39% black bullhead and 11% bluegill. The total catch per unit effort (CPUE) was 0.10 fish/net hour (fnh) for largemouth bass, 0.02 fnh for bluegill, ------- 0.08 fnh for black bullhead and 0.08 fnh for white sucker. All Health Condition Profile (HCP) autopsy parameters were within the normal range for largemouth bass and bluegill. Sample 2, 1995 Eight floating gillnets were set in Pelican on 7-10-95 at 16:00 hours and pulled on 7-11-95 at 10:00 hours (144 total net hours). The water temperature was 76'F at the time of sampling. The relative abundance indices were 48% largemouth bass, 35% bluegill, 12% black bullhead and 5% green sunfish. The total CPUE was 0.13 fnh for largemouth bass, 0.10 fnh for bluegill, 0.03 fnh for black bullhead, 0.01 fnh for green sunfish and 0.02 fnh for white sucker. All HCP autopsy parameters were within the normal range for largemouth bass and bluegill. Sample 3, 1995 Six floating gillnets were set in Pelican on 9-7-95 at 16:00 hours and pulled on 9-8-95 at 10:30 hours (111 total net hours). The water temperature was 73'F at the time of sampling. The relative abundance indices were 68% largemouth bass, 28% bluegill, 3% black bullhead and 1% green sunfish. The total CPUE was 0.63 fnh for largemouth bass, 0.26 fnh for bluegill, 0.03 fnh for black bullhead, 0.01 fnh for green sunfish and 0.03 fnh for white sucker. All HCP autopsy parameters fell within the normal range for largemouth bass and bluegill. Sample 1, 1996 Six floating gillnets were set in Pelican on 5-21-96 at 14:30 hours and pulled on 5-22-96 at 10:15 hours (118.5 total net hours). The water temperature was 641F at the time of sampling. The relative abundance indices were 59% black bullhead, 20% bluegill, 18% largemouth bass and 3% green sunfish. The total CPUE was 0.05 fnh for largemouth bass, 0.06 fnh for bluegill, 0.01 fnh for green sunfish, 0.32 fnh for black bullhead and 0.01 fnh for white sucker. All HCP autopsy parameters fell within the normal range for largemouth bass and bluegill. Sample 2, 1996 Six floating gillnets were set in Pelican on 7-1-96 at 15:00 hours and pulled on 7-2-96 at 12:30 hours (129 total net hours). The water temperature was 76"F at the time of sampling. The relative abundance indices were 65% largemouth bass, 27% bluegill, 7% green sunfish and 1% black bullhead. The total CPUE was 0.91 fnh for largemouth bass, 0.38 fnh for bluegill, 0.09 fnh for green sunfish, 0.02 fnh for black bullhead and 0.01 fnh for white sucker. All HCP autopsy parameters were within the normal range for largemouth bass and bluegill. ------- Sample 3, 1996 Six floating gillnets were set in Pelican on 8-4-96 at 14:30 hours and pulled on 8-5-96 at 11:00 hours (123 total net hours). The water temperature was 74'F at the time of sampling. The relative abundance indices were 62% largemouth bass, 25% bluegill, 4% green sunfish and 9% black bullhead. The total CPUE was 0.45 fnh for largemouth bass, 0.19 fnh for bluegill, 0.03 fnh for green sunfish, 0.06 fnh for black bullhead and 0.02 fnh for white sucker. The mean CPUE for largemouth bass has been increasing since 1988 (Figure 3). [_ QJ ^ O ~ =n Q1 u a tfi LM Caich Raie& 5 lj m m N e + + i n g 0.60 0.40 0.20 0.00 84 85 86 87 88 30 91 32 33 34 35 36 Year FIGURE 3. Largemouth bass CPUE from summer trend netting. The 1995 and 1996 data is the mean of 3 net samples. ------- The mean 1996 CPUE for bluegill increased slightly from 1995 net data (Figure 4). However, the CPUE appears relatively static between 1993-1996. c_ 04 -I- O ~ ~= cc OJ u ~ -C t 3 l/l Catch Rates > r Netting 8H- 85 86 87 88 80 31 3Z 33 34- 35 SB Year FIGURE 4. Bluegill CPUE from summer trend netting. The 1995 and 1996 data is the mean of 3 net samples. The black bullhead mean CPUE is the highest it has been since 1990 (Figure 5). £_ GJ =¦ -I- O a nr cu ~ _c in Bullhead Catch Rates Summer^ Netting 0.00—r 84 85 86 87 88 30 31 32 93 34 35 35 Yea FIGURE 5. Black bullhead CPUE from summer trend netting. The 1995 and 1996 data is the mean of 3 net samples. ------- The white sucker mean CPUE remains low and decreased slightly in 1996 (Figure 6). L. HI D —1— O a zn cr H— 1— Qi u z: —1— N a _C £_3 £ L±_ Sucker 5ummer Catch Rates, N e + + i n 9 "I 1—T* f *T 84 85 86 87 88 90 91 92 93 94 95 95 Y ear FIGURE 6. White sucker CPUE from summer trend netting. The 1995 and 1996 data is the mean of 3 net samples. Green sunfish have only been captured in Pelican Lake since 1994 (Figure 7). Green sunfish are likely entering the lake through the inflow canal from Cottonwood Reservoir located in the upper drainage. The green sunfish population in Cottonwood and Bullock Reservoirs has expanded to the point that these reservoirs are scheduled for chemical renovation in 1999. Green Sun-Pish Catch Rate 5ummen Ne ttin g 0.04 C- QJ 3 0.03 O a cc 0.02 r- ai 0.0L 0 -C £ 3 If 0.00 lZ 84 85 85 87 88 90 9L 92 93 94 95 96 Y ear FIGURE 7. Green Sunfish CPUE from summer trend netting. The 1995 and 1996 data is the mean of 3 net samples. ------- Largemouth bass and bluegill length histograms from the last trend gill netting in 1996 indicate survival of several cohorts Both species appear to have had successful recruitment over the last several years (Figures 8 and 9). 1/1 l_ a 1/1 20 o CO 15 c_ oi _o Z7 10 £ o £ 5 - ai cr> 0 £_ O 1 Pelican Lake 8-5-96 g mo u 4 h B a & & L c n g + K 300 350 100 150 200 250 125 175 225 275 325 Length (mm) 375 FIGURE 8. Largemouth bass length histogram from 1996 trend netting. Pelican Lake 8-5~96 6 lu q 9 ill L_ « r-i g + h 10 8 c_ CL> Ul b _Q (LI Z3 4 =3 CO 2 0 Length ( m m FIGURE 9. Bluegill length histogram from 1996 trend netting. ------- Mortality Transect No fish were observed during the spring mortality count transects on 3-7-95 and 3-12-96 (Table 1). Wet water cycles have kept storage high during this study period. Mortality counts have been conducted at Pelican Lake since 1974. Partial winter kills have been common (Table 1), and have had a thinning effect on the bluegill population, helping to keep growth rates high and prevent stunting (Burdick, 1979). During drought years, winter kills are more severe due to extreme drawdowns of the lake to meet irrigation demands. TABLE 1. Mortality count transect trend data for Pelican Lake. YEAR # Bluegill # Largemouth Bass 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 219 1237 780 570 1184 35 3 2 1 4 0 2 3 0 103 6 503 246 15 3 4 0 0 3 4 1 0 0 3 0 3 26 0 0 0 0 0 0 2 0 0 0 ------- Seine Sampling Eleven seine hauls were done at various accessible locations at Pelican Lake on 9-26-95 (Figure 2). A total of 6 largemouth bass, 26 bluegill and 2 red shiners were captured (Table 2). The 2 red shiners captured in 1995 are the only ones ever sampled in the lake. Twelve seine hauls were done on 10-4-96 (Figure 2). A total of 2 largemouth bass and 6 bluegill were captured (Table 2). The low seine catch at Pelican Lake is due to capture difficulty. Shoreline vegetation precludes seining on most areas of the lake. However, young of the year largemouth bass and bluegill were captured in 1995 and 1996, indicating successful spawning both years. Although young of the year largemouth bass and bluegill were not effectively sampled in the gillnets and seines, they were observed in abundance throughout the lake during the 2 year study. TABLE 2. Largemouth bass, bluegill and red shiner seine catch. Seine # LM Bass # Bluegill # Red Shiner Pull 1995 1996 1995 1996 1995 1996 1 0 0 0 0 0 0 2 0 0 0 0 0 0 3 0 1 0 0 0 0 4 0 0 3 0 0 0 5 0 0 5 0 2 0 6 4 0 5 0 0 0 7 1 0 9 0 0 0 8 1 0 2 0 0 0 9 0 0 2 2 0 0 10 0 1 0 4 0 0 11 0 0 0 0 0 0 12 - 0 - 0 - 0 Creel Census The average catch rate for Pelican Lake in 1995 was estimated at 0.61 fish per hour (f/h), with 0.00 f/h from shore and 0.82 f/h from boats. The average catch rate was the highest for July weekdays at 2.09 f/h. A total of 534 anglers were estimated for 1995, with 128 from shore and 406 from boats. Anglers expended an estimated 1,404 hours fishing, with 354 hours from shore and ------- 1,050 hours from boats. The average length of an angler day was 2.6 hours. The total fishing pressure, Angler Day Use (ADU), at Pelican Lake in 1995 was 534 days. There was a total catch of 856 fish, with a species composition of 854 largemouth bass and 2 bluegill. Fishermen kept 6% of all largemouth bass caught and no bluegill were kept. Total annual harvest was estimated at 83 largemouth bass. The average catch rate for Pelican lake in 1996 was estimated to be 2.35 f/h, with 0.56 f/h from shore and 2.83 f/h from boats. The average catch rate was highest for August weekends at 3.08 f/h. A total of 228 anglers were estimated in 1996, with 58 from shore and 170 from boats. Anglers expended an estimated 1,422 hours fishing, with 303 hours from shore and 1,119 hours from boats. The average length of an angler day was 6.2 hours. The total fishing pressure, Angler Day Use (ADU) , at Pelican Lake in 1996 was 228 days. There was a total catch of 3,337 fish, with a species composition of 3,208 largemouth bass and 129 bluegill. Fishermen kept only 0.2% of all largemouth bass caught and no bluegill were kept. Total annual harvest was estimated at 6 largemouth bass. A summary of the creel estimates are provided in Table 3. The number of anglers decreased from 1995 to 1996 (534 - 228) . However, the number of angler hours was nearly identical (14 04 - 1422) and catch rates dramatically increased (0.61 fish/hour - 2.35 fish/hour). Drawdowns in 1996 limited boat access in the middle of summer, which explains the decreased number of anglers. An improved boat ramp and dredging would allow boat access at Pelican throughout the season. The high catch rates in 1996 would account for the increased hours per angler. Shoreline access is limited at Pelican Lake, which is why more boat anglers are present as compared to shore anglers. Pelican Lake would be a good lake to install a fishing pier to improve access for anglers without boats. The lack of current utilization of the Pelican Lake bluegill fishery can be attributed to several factors. The public is unaware that the bluegill fishery is improving. Utilization of the fishery could be increased through news releases and fishing shows. However, the bluegill have not yet attained the trophy proportions of the past. Therefore, publicizing the improving bluegill fishery may not be appropriate at this time. Creel data indicates fish over a pound have already been harvested at the lake. The five fish bluegill limit at Pelican Lake may discourage anglers from travelling any distance to fish. Bluegill fishermen are traditionally harvest oriented. This will be corrected in the future with increased limits as the population improves. ------- The objective of this creel census was to document declining angler use at Pelican Lake associated with the declining bluegill fishery. Although the fishery is improving, Pelican Lake only provided 534 angler days in 1995 and 228 days in 1996, compared to a peak pressure of 10,054 angler days in 1975. This is a significant loss of angling opportunity for Northeastern Utah. The recovery of this fishery would have significant economic benefits to the local community. The potential for the Pelican Lake fishery to crash again is very likely in the event of a future drought. TABLE 3. Shore and boat estimates for the Pelican Lake creel census, 1995 and 1996. 1995 Report Name Shore Boat Both # Fishermen 128 406 534 # Fishermen Hours 354 1, 050 1,404 Total Catch 0 856 856 Total Harvest 0 83 83 Total Catch Rate 0.00 0 .82 0.61 Largemouth Catch 0 854 854 Largemouth Harvest 0 83 83 Bluegill Catch 0 2 2 Bluegill Harvest 0 0 0 1996 Report Name Shore Boat Both # Fishermen 58 170 228 # Fishermen Hours 303 1,119 1,422 Total Catch 170 3,167 3, 337 Total Harvest 0 6 6 Total Catch Rate 0.56 2 .83 2.35 Largemouth Catch 85 3,123 3,208 Largemouth Harvest 0 6 6 Bluegill Catch 85 44 129 Bluegill Harvest 0 0 0 Piscivorous Bird Stomach Analysis Three of the 4 blue herons sampled had remains of fish in their stomachs. All of the 5 cormorants sampled had recently eaten fish. Fish or fish remains were not found in any of the eared grebes sampled, and only 1 of the 5 western grebes sampled contained fish remains. It appears eared grebes and western ------- Table 4. Piscivorous bird stomach contents from Pelican Lake, 1996 . PELICAN LAKE Piscivorous bird stomach analysis October 16, 1996 Specie Date Time Findings % of total contents J Blue Heron 8/30/96 12:00 pm EMPTY Blue Heron 8/30/96 12:05 pm 1 - crayfish: 3 - unidentified fish skeletons 30 - 40 mm in length 80 Blue Heron 8/22/96 12:35 pm 1 - Largemouth bass 60 mm; and 1 largemouth bass 100 mm;2 - unidentified skeletal fish remains 80 Blue Heron 8/30/96 12:05 pm 120 mm largemouth bass and vertebrae of a 30 mm fish 80 % fish matter 20% unknown Cormorant 8/28/96 11:55 am 1 - Bluegill sun fish 150mm 99*/* fish matter 1% unknown Cormorant 8/27/96 11:10 am 2 - Bluegill sunfsih 130 mm, 150mm 99% fish matter 1% unknown Cormorant 8/30/96 11:20 am Skeletal remains of 1 fish (bluegill) 100mm 99% fish matter 1% unknown Cormorant 8/30/96 9:55 am 3 - largemouth bass 80,90,. and 70 mm: 1 - Bluegill sun fish 60mm; 1- unidentified fish 50mm 90% fish matter 10% unknown Cormorant 8/27/96 11:20 1 - largemouth bass 140mm 99%fish matter 1% unknown Eared Grebe 8/22/96 12:50 pm feathers 100% Eared Grebe 8/30/96 12:45 pm feathers 100% Eared Grebe 8/30/96 12:40 pm feathers 100% Eared Grebe 8/30/96 12:50 pm feathers 100% Eared Grebe 8/22/96 10:45 am feathers 100% Western Grebe 8/22/96 11:45 am feathers 100% Western Grebe 8/27/96 12:53 pm feathers, fish remains unidentified 80mm 90% feathers 10% fish matter Western Grebe 8/22/96 12:15 pm feathers 100% Western Grebe 8/30/96 12:30 pm feathers 100% Western Grebe 8/22/96 11:15 am feathers 100% ------- grebes do not prey heavily on fish at Pelican Lake. However, stomach analysis results may be affected by bird digestion rates and feeding times. A summary of species of birds sampled, the date and time of sampling, and the stomach contents are provided as Table 4. Piscivorous Bird Count Piscivorous birds counted, in order of abundance in both 1995 and 1996, were eared grebes, western grebes, cormorants, great blue herons and pied-billed grebes. An estimate of total bird days at Pelican Lake in 1995 and 1996 is given in Table 5. One notable outcome of the bird counts was the significant increase in the number of bird-days of blue herons, cormorants and western grebes between 1995 and 1996. Stomach analysis results indicated that blue herons and cormorants are the primary fish consumers among the piscivorous birds at Pelican Lake. At peak bird-day use of 765 days for cormorants in July 1996, and 372 days for blue herons in August 1996, fish consumption would be only moderate. The fish population in the lake continued to increase during the course of the 2-year study, in spite of the moderate and increasing number of piscivorous birds. This increase is likely due to the high fecundity rate of largemouth bass and bluegill, and the abundance of available escape cover in the lake. It is likely that predation on fish by piscivorous birds at Pelican Lake is a contributing factor when fish numbers are declining, but not the major cause of the decline. Table 5. Estimated bird-days spent by piscivorous birds on Pelican Lake, Utah: May-October 1995 and 1996. 1995 SPECIE Month EG WG CRT BH PBG May 16430 732 225 112 23 June 21273 1312 155 57 25 July 47067 1786 99 16 43 August 27013 2926 322 68 68 September 966 1722 222 78 24 October 787 2604 34 81 6 1996 SPECIE Month EG WG CRT BH PBG May 53992 1943 475 103 0 ------- June 42720 3585 765 90 45 July 20150 4596 744 78 101 August 17670 4619 713 217 165 September No Counts October 589 1612 124 372 0 Fish Tissue Sampling A detailed summary of the Pelican Lake fish tissue analysis from Hazelton Environmental Services is provided as Attachment A. There were no organic contaminants found in any of the fish tissue samples from bluegill, largemouth bass, black bullhead and white sucker. Mercury and selenium levels found in fish tissues were the highest in largemouth bass and the lowest in black bullhead. Mercury and selenium levels are summarized by species in Table 6. These small trace amounts of heavy metals are believed to have no effect on the fish population (Sorensen 1991, Rand and Petrocelli 1985). Mercury and selenium occur naturally in the sediments of the drainage. TABLE 6. Fish tissue mercury and selenium levels from Pelican Lake, 1995. Species Mercury in Tissue Selenium in Tissue Bluegill Largemouth Bass Black Bullhead White Sucker .104 MG/KG .156 MG/KG .054 MG/KG .126 MG/KG .37 MG/KG .46 MG/KG .23 MG/KG .33 MG/KG Discussion An effort should be made to improve the water quality of Pelican Lake to prevent another collapse of the fishery. Low water levels going into winter are the trigger for winter kills at Pelican Lake. Long term recovery of the fishery will require finding solutions to the water quality problems. The Utah Division of Water Quality has classified Pelican Lake as a mesotrophic, moderately productive, system (UDWQ 1997) . The water quality ranking includes factors for the Trophic State Index (TSI), dissolved oxygen concentration, phytoplankton species dominance, reported fish kills and water quality trend (UDWQ 1997) . The TSI index value is a measure of total phosphorus, secchi depth and chlorophyll-a in the water (Carlson 1977). ------- Due to the lack of adequate water exchange in Pelican Lake, the system traps nutrients. The increased nutrient levels and the shallow nature of Pelican Lake, creates abundant vegetation and subsequent winterkills, despite its mesotrophic status. The Pelican Lake system tends to react more like a eutrophic, or highly productive system. Aquatic vegetation in Pelican Lake decomposes under the ice, consuming oxygen and causing the release of hydrogen sulfide from the lake sediments. The lake becomes anoxic and thus toxic to fish, leading to winter kills of fish (UDWR Fish Files 1954-1990) The reduction of organic and inorganic nutrients from inflow canal headcutting and return irrigation up the inflow drainage would certainly improve the water quality. This could be accomplished through bank stabilization and riparian buffer zones in critical areas. There are also several cattle feed lots on the north and south shores of Pelican Lake that contribute nutrients through cattle wastes. These nutrients could also be reduced by providing a riparian buffer zone between the feed lots and the shoreline to uptake nutrients before they enter the lake. The creation of riparian buffer zones would require a cooperative effort with the local landowners. This could be achieved through either a conservation easement or outright purchase of these critical areas. Sedimentation of the lake is also a contributor to winter kill problems at Pelican. The canal inflow carries a high sediment load. It is likely the UDWR conservation pool at Pelican has been reduced through sedimentation, compounding the low oxygen problems by overall reduction of the lake volume. A bathymetric survey needs to be conducted at Pelican Lake to determine any compromise of the conservation pool. If the lake volume has been reduced, dredging may be necessary to recover the full conservation pool. A survey also needs to be conducted to determine the conservation pool elevation, and a staff gauge needs to be installed. A conservation pool is of little value if it cannot be monitored to insure the water stays in the lake. This is critical to the winter survival of the fishery and to protect the investment in the water rights. This would also aid the local water users in monitoring their available water. At present, there is no way to accurately determine if the lake is at the conservation pool level. The timing of water delivery to the lake is also critical to the winter survival of the fishery. If the lake can be filled in late fall or winter, it would mitigate many of the water quality ------- problems. In low water years, water has simply not been available to put into Pelican Lake in the fall. The purchase or exchange of additional water would greatly benefit the Pelican Lake fishery. The collapse of the fishery in the late 1980's could very well have been from a one time, low water event. The fishery has been slowly recovering ever since. However, a future crash of the fishery is likely if water quality problems are not corrected at Pelican. Literature Cited Babcock, B. 1988. C-SAP (Creel Survey Analysis Program). Colorado Division of Wildlife Publication. 43 pp. Burdick, B.D. 1979. Biology, reproductive potential and the impact of fishing pressure on the bluegill fishery of Pelican Lake, Uintah County, Utah. Masters Thesis, Utah State University, Logan. 232 pp. Carlson, R.E. 1977. A trophic state index for lakes. Limnology and Oceanography. 22(2:361-369). Goede, R.W. 1991. Fish health/condition assessment procedures. Utah Division of Wildlife Resources, Logan. 2 9 pp. Neuhold, J.M. and K.H. Lu 1956. Creel census design. Utah State Dept. Fish and Game, Publication No. 8. 27 pp. Ottenbacher, M.J. and D.K. Hepworth and L.N. Berg. Observations on double-crested cormorants (phalacrocorax auritus) at sportfishing waters in southwestern Utah. Great Basin Naturalist. 54 (3:272-285) Rand, G.M. and S.R. Petrocelli 1985. Fundamentals of aquatic toxicology. Hemisphere Publishing Corp. pp. 83-95, 374-394. Sorensen, E.M.B. 1991. Metal poisoning in fish. CRC Press, Boca Raton. 331 pp. Utah Division of Water Quality 1997. Utah's lakes and reservoirs- inventory and classification of Utah's priority lakes and reservoirs. Utah Division of Water Quality report, Salt Lake City. Utah Division of Wildlife Resources 1954-1990. Unpublished fisheries reports, Vernal. ------- H azleton I £ nvironmental I § ervices, Inc. REPORT OF ANALYSIS HES, Inc. SAMPLE NUMBER: DATE ENTERED: REPORT PRINTED: FISH: BLUEGILLS FROM TREND GILLNET, 7/11/95 UTAH DEPARTMENT OF NATURAL RESOURCES PURCHASE ORDER NUMBER: PC56065000000056 ICP SPECTROSCOPY EDWARD K.JOHNSON STATE OF UTAH DIVISION OF WILDLIFE RESOURCES NORTHEASTERN REGION 152 EAST 100 NORTH VERNAL, UT 84078-2126 ELEMENTS MG/KG ALUMINUM 9.65 BARIUM 1.82 BERYLLIUM < 0.020 BORON 1.11 CADMIUM < 0.059 CHROMIUM 0.240 COPPER 0.398 IRON 14.2 LEAD < 0.493 MAGNESIUM 305. MANGANESE 1.19 MOLYBDENUM < 0.394 NICKEL < 0.118 STRONTIUM 36.3 VANADIUM < 0.049 ZINC 17.2 PESTICIDES-PCBS IN TISSUES USDI-WS SEE ATTACHED REPORT. % LIPID DETERMINATION SEE ATTACHED REPORT. % MOISTURE DETERMINATION SEE ATTACHED REPORT. ARSENIC IN TISSUE < .07 MG/KG 60200475 02/16/96 04/15/96 525 SCIENCE DRIVE • MADISON. WISCONSIN 5371 1 Phone 608-232-3300 Fax 608-233-0502 ------- H azleton HES, Inc. ervices, Inc. SAMPLE NUMBER: 60200475 ISH: BLUEGILLS FROM TREND GILLNET, 7/11/95 _ TAH DEPARTMENT OF NATURAL RESOURCES nvironmental PAGE 2 SSAY ERCURY IN TISSUE ANALYSIS UNITS MG/KG .104 ELENIUM IN TISSUE 37 MG/KG METHOD REFERENCES CP SPECTROSCOPY DAHLQUIST, R. L., AND KNOLL, J. W. , "INDUCTIVELY COUPLED PLASMA - ATOMIC EMISSION SPECTROMETRY: ANALYSIS OF BIOLOGICAL MATERIALS AND SOILS FOR MAJOR, RACE, AND ULTRA-TRRACE ELEMENTS," ALLIED SPECTROSCOPY, 32(1):1-29 (JAN./FEB). OFFICIAL METHODS OF ANALYSIS, 14TH EDITION, METHOD 43.292-43.296, AOAC, ARLINGTON, VIRGINIA (1984). FFICIAL METHODS OF ANALYSIS, 1ST SUPPLEMENT, 14TH EDITION. METHOD 3.A01-3.A04 DAC, ARLINGTON, VIRGINIA (1985). U.S. ENVIRONMENTAL PROTECTION AGENCY CONTACT LABORATORY PROGRAM, STATEMENT OF ORK, INORGANIC ANALYSIS, MULIMEDIA, MULICONCENTRATION REV. (DECEMBER 1987) PESTICIDES-PCBS IN TISSUES USDI-WS ETERMINATION OF ORGANOCHLORINE PESTICIDES ANNNS POLYCHLORINATED BIPHENYLS PCBS) IN BIOLOGICAL TISSUES. HAZLETON WISCONSIN INC. % LIPID DETERMINATION ANDALL, R.C., LEE, H., OZRETICH. R.J., LAKE, J.L., AND PRUELL, PRUELL, R.J. EVALUATION OF SELECTED LIPID METHODS FOR NORMALIZING POLLUTANT BIOACCUMUALATION". ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY, VOL 10, .1431-1436,(1991) STANDARD METHODS FOR THE EXAMINATION OF WATER AND WASTEWATER." ALPH, AWWA, fiPCF 17TH ED., PP. 5-41, (1989) MOISTURE DETERMINATION .S. EPA CONTRACT LABORATORY, CONTRACT NO. 68-01-7418, STATEMENT OF WORK FOR ORGANIC ANALYSIS, EXHIBIT D, (REVISED NOVEMBER, 1987). RSENIC IN TISSUE U.S.EPA, "METHODS FOR CHEMICAL ANALYSIS OF WATER AND WASTES", METALS 1-19 AND "ND METHOD 206.2, CINCINNATI, OH (1979). .S.EPA, "TEST METHODS FOR EVALUATING SOLID WASTE", SW-846, SECOND EDITION, «ETHOD 7060, WASHINGTON DC (REVISED APRIL 1984). ".S.EPA, CONTRACT LABORATORY PROGRAM (CLP), STATEMENT OF WORK ILM02.0, 1990. 525 SCIENCE DRIVE • MADISON, WISCONSIN 537 1 1 Phone 608-232-3300 Fax 608-233-0502 Q printed on recycled paper ------- |j-j] azleton |E | nvironmental I § ervices, Inc. SAMPLE NUMBER: 60200475 HES, Inc. PAGE FISH: BLUEGILLS FROM TREND GILLNET, 7/11/95 UTAH DEPARTMENT OF NATURAL RESOURCES METHOD REFERENCES (CONTINUED) MERCURY IN TISSUE U.S. EPA, "TEST METHODS FOR EVALUATION SOLID WASTE,"EPA PUBLICATION NO. SW-846 SECOND EDITION, METHODS 3030,3040;AND 7470, WASHINGTON,DC (REVISED APRIL 1984) "MERCURY IN FISH, "AOAC OFFICIAL METHODS OF ANALYSIS, 15TH EDITION, METHOD 977.15 (MODIFIED), (1990). SELENIUM IN TISSUE U.S.EPA, "METHODS FOR CHEMICAL ANALYSIS OF WATER AND WASTES", METALS 1-19 AND METHOD 272.02, CINCINNATI,OH (1979). U.S.EPA, "TEST METHODS FOR EVALUATING SOLID WASTE", SW-846, SECOND EDITION, METHOD 7841, WASHINGTON, DC (REVISED APRIL 1984). USEPA, CLP, STATEMENT OF WORK ILM02.0, 1990. coc cmrwri: nmvp . MADISON. WISCONSIN 5371 1 Phone 608-232-3300 Fax 608-233-0502 ------- SAMPLE RESULTS SUMMARY CLIENT I.D. HLA NO. HLA NO. CATALOG NO. QC SET No. DATE RECEIVED BLUEGILL,7/11/95 60200475 P 60200475 AR 02/15/96 MATRIX TYPE % MOISTURE % LIPID MS ANALYZED DATE ANALYZED TISSUES ERR % 8.21 % NO Apr 3, 1996 Apr 2, 1996 COMPOUND SAMPLE RESULTS (ppm) LIMIT OF DETECTION (ppm) DILUTION FACTOR MS CONFIRMED Hexachlorobenzene... < 0.010 0.010 1.0 NO Gamma-BHC < 0.010 0.010 1.0 NO Oxychlordane < 0.010 0.010 1.0 NO Gamma-Chlordane < 0.010 0.010 1.0 NO Alpha-Chlordane < 0.010 0.010 1.0 NO 4,4'-DDE < 0.010 0.010 1.0 NO Endrin < 0.010 0.010 1.0 NO 4,4'-DDD < 0.010 0.010 1.0 NO 4,4'-DDT < 0.010 0.010 1.0 NO Alpha-BHC < 0.010 0.010 1.0 NO Heptachlor Epoxide.. < 0.010 0.010 1.0 NO 0,p'-DDE < 0.010 0.010 1.0 NO Trans-Nonachlor < 0.010 0.010 1.0 NO Dieldrin < 0.010 0.010 1.0 NO o,p *-DDD < 0.010 0.010 1.0 NO O,p1-DDT < 0.010 0.010 1.0 NO Mirex < 0.010 0.010 1.0 NO Beta-BHC < 0.010 0.010 1.0 NO Toxaphene < 0.050 0.050 1.0 NO Total PCB's < 0.050 0.050 1.0 NO File Name: C:\RT\UTAH\F1_475 ------- H azleton "|E nvironmental I § ervices, Inc. REPORT OF ANALYSIS HES, Inc. SAMPLE NUMBER: DATE ENTERED: REPORT PRINTED: FISH: WHITE SUCKERS FROM TREND GILLNET, 6/08/95 UTAH DEPARTMENT OF NATURAL RESOURCES PURCHASE ORDER NUMBER: PC56065000000056 EDWARD K.JOHNSON STATE OF UTAH DIVISION OF WILDLIFE RESOURCES NORTHEASTERN REGION 152 EAST 100 NORTH VERNAL, UT 84078-2126 ICP SPECTROSCOPY ELEMENTS MG/KG ALUMINUM 8.43 BARIUM 1.86 BERYLLIUM < 0.020 BORON 0.573 CADMIUM < 0.059 CHROMIUM 0.222 COPPER 0.399 IRON 14.3 LEAD < 0.494 MAGNESIUM 303. MANGANESE 1.19 MOLYBDENUM < 0.395 NICKEL < 0.119 STRONTIUM 37.4 VANADIUM < 0.049 ZINC 16.4 PESTICIDES-PCBS IN TISSUES USDI-WS SEE ATTACHED REPORT. % LIPID DETERMINATION SEE ATTACHED REPORT. % MOISTURE DETERMINATION SEE ATTACHED REPORT. ARSENIC IN TISSUE < .07 MG/KG 60200476 02/16/96 04/15/96 Phone 608-232-3300 Fax 608-233-0502 ------- SAMPLE RESULTS SUMMARY CLIENT I.D. HLA No. HLA NO. CATALOG No. QC SET NO. DATE RECEIVED SUCKERS, 6/08/95 60200476 P 60200476 AR 02/15/96 MATRIX TYPE % MOISTURE % LIPID MS ANALYZED DATE ANALYZED TISSUES ERR % 6.21 % NO Apr 3, 1996 Apr 2, 1996 COMPOUND SAMPLE RESULTS (ppm) LIMIT OF DETECTION (ppm) DILUTION FACTOR MS CONFIRMED Bexachlorobenzene... < 0.010 0.010 1.0 NO Gamma-BHC < 0.010 0.010 1.0 NO Oxychlordane < 0 .010 0.010 1.0 NO Gamma-Chlordane < 0.010 0.010 1.0 NO Alpha-Chlordane < 0.010 0.010 1.0 NO 4,4'-DDE < 0.010 0.010 1. 0 NO Endrin < 0.010 0.010 1.0 NO 4,4'-DDD < 0.010 0.010 1.0 NO 4,4'-DDT < 0.010 0.010 1.0 NO Alpha-BBC < 0.010 0.010 1.0 NO Heptachlor Epoxide.. < 0.010 0.010 1.0 NO o,p *-DDE < 0.010 0.010 1.0 NO Trans-Nonaohlor < 0.010 0.010 1.0 NO Dieldrin < 0.010 0.010 1.0 NO 0,p'-DDD < 0.010 0.010 1.0 NO 0,p* -DDT < 0.010 0.010 1.0 NO Mirex < 0.010 0.010 1.0 NO Beta-BBC < 0.010 0.010 1.0 NO Toxaphene < 0.050 0.050 1.0 NO Total PCB•s < 0.050 0.050 1.0 NO File Name: C:\RT\UTAH\F1_476 ------- H azleton I ^ nvironmental HES, Inc. § ervices,Inc SAMPLE NUMBER: 60200476 PAGE 2 FISH: WHITE SUCKERS FROM TREND GILLNET, 6/08/95 UTAH DEPARTMENT OF NATURAL RESOURCES ASSAY MERCURY IN TISSUE ANALYSIS UNITS MG/KG .126 SELENIUM IN TISSUE 33 MG/KG METHOD REFERENCES ICP SPECTROSCOPY DAHLQUIST, R. L., AND KNOLL, J. W. , "INDUCTIVELY COUPLED PLASMA - ATOMIC EMISSION SPECTROMETRY: ANALYSIS OF BIOLOGICAL MATERIALS AND SOILS FOR MAJOR, TRACE, AND ULTRA-TRRACE ELEMENTS," ALLIED SPECTROSCOPY, 32(1):1-29 (JAN./FEB). OFFICIAL METHODS OF ANALYSIS, 14TH EDITION, METHOD 43.292-43.296, AOAC, ARLINGTON, VIRGINIA (1984). OFFICIAL METHODS OF ANALYSIS, 1ST SUPPLEMENT, 14TH EDITION. METHOD 3.A01-3.A04 AOAC, ARLINGTON, VIRGINIA (1985). U.S. ENVIRONMENTAL PROTECTION AGENCY CONTACT LABORATORY PROGRAM, STATEMENT OF WORK, INORGANIC ANALYSIS, MULIMEDIA, MULICONCENTRATION REV. (DECEMBER 1987) PESTICIDES-PCBS IN TISSUES USDI-WS DETERMINATION OF ORGANOCHLORINE PESTICIDES ANNNS POLYCHLORINATED BIPHENYLS (PCBS) IN BIOLOGICAL TISSUES. HAZLETON WISCONSIN INC. % LIPID DETERMINATION RANDALL, R.C., LEE, H., OZRETICH. R.J., LAKE, J.L., AND PRUELL, PRUELL, R.J. "EVALUATION OF SELECTED LIPID METHODS FOR NORMALIZING POLLUTANT BIOACCUMUALATION". ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY, VOL 10, P.1431-1436,(1991) "STANDARD METHODS FOR THE EXAMINATION OF WATER AND WASTEWATER." ALPH, AWWA, WPCF 17TH ED., PP. 5-41, (1989) % MOISTURE DETERMINATION U.S. EPA CONTRACT LABORATORY, CONTRACT NO. 68-01-7418, STATEMENT OF WORK FOR ORGANIC ANALYSIS, EXHIBIT D, (REVISED NOVEMBER, 1987). ARSENIC IN TISSUE U.S.EPA, "METHODS FOR CHEMICAL ANALYSIS OF WATER AND WASTES", METALS 1-19 AND AND METHOD 206.2, CINCINNATI, OH (1979). U.S.EPA, "TEST METHODS FOR EVALUATING SOLID WASTE", SW-846, SECOND EDITION, METHOD 7060, WASHINGTON DC (REVISED APRIL 1984). U.S.EPA, CONTRACT LABORATORY PROGRAM (CLP), STATEMENT OF WORK ILM02.0, 1990. RPR Sr.lFNnF DRIVF . MADISON WISCONSIN 537 1 1 Phone 60B-232-3300 Fax 608-233-0502 ------- azleton nvironmental ervices, Inc. SAMPLE NUMBER: 60200476 HES, Inc. PAGE SH: WHITE SUCKERS FROM TREND GILLNET, 6/08/95 UTAH DEPARTMENT OF NATURAL RESOURCES STHOD REFERENCES (CONTINUED) SRCURY IN TISSUE S. EPA, "TEST METHODS FOR EVALUATION SOLID WASTE,"EPA PUBLICATION NO. SW-846 SECOND EDITION, METHODS 3030,3040;AND 7470, WASHINGTON,DC (REVISED APRIL 1984) IERCURY IN FISH, "AOAC OFFICIAL METHODS OF ANALYSIS, 15TH EDITION, METHOD '7.15 (MODIFIED), (1990). -"SLENIUM IN TISSUE S.EPA, "METHODS FOR CHEMICAL ANALYSIS OF WATER AND WASTES", METALS 1-19 AND STHOD 272.02, CINCINNATI,OH (1979). U.S.EPA, "TEST METHODS FOR EVALUATING SOLID WASTE", SW-846, SECOND EDITION, ITHOD 7841, WASHINGTON, DC (REVISED APRIL 1984). :EPA, CLP, STATEMENT OF WORK ILM02.0, 1990. 525 SCIENCE DRIVE •MADISON, WISCONSIN 537 1 1 Phone 608-232-3300 Fax 608-233-0502 G pmted on recycled paper ------- H azleton I nvironmental I § ervices, Inc. REPORT OF ANALYSIS HES, Inc. SAMPLE NUMBER: DATE ENTERED: REPORT PRINTED: FISH: BLACK BULLHEADERS FROM TREND GILLNET, 6/08/95 UTAH DEPARTMENT OF NATURAL RESOURCES PURCHASE ORDER NUMBER: PC56065000000056 ICP SPECTROSCOPY EDWARD K.JOHNSON STATE OF UTAH DIVISION OF WILDLIFE RESOURCES NORTHEASTERN REGION 152 EAST 100 NORTH VERNAL. UT 84078-2126 ELEMENTS MG/KG ALUMINUM 7.47 BARIUM 2.08 BERYLLIUM < 0.020 BORON 0.661 CADMIUM < 0.059 CHROMIUM < 0.296 COPPER 0.407 IRON 13.0 LEAD < 0.494 MAGNESIUM 356. MANGANESE 1.51 MOLYBDENUM < 0.395 NICKEL < 0.119 STRONTIUM 42.7 VANADIUM < 0.049 ZINC 19.6 PESTICIDES-PCBS IN TISSUES USDI-WS SEE ATTACHED REPORT. % LIPID DETERMINATION SEE ATTACHED REPORT. % MOISTURE DETERMINATION SEE ATTACHED REPORT. ARSENIC IN TISSUE < .07 MG/KG 60200477 02/16/96 04/15/96 525 SCIENCE DRIVE •MADISON, WISCONSIN 5371 1 Phone 608-232-3300 Fax 608-233-0502 ------- SAMPLE RESULTS SUMMARY CLIENT I.D. HLA NO. HLA NO. CATALOG No. QC SET NO. DATE RECEIVED BULLHEADS,6/08/95 60200477 P 60200477 AR 02/15/96 MATRIX TYPE % MOISTURE % LIPID MS ANALYZED DATE ANALYZED TISSUES ERR % 4.69 % NO Apr Apr 3, 2, 1996 1996 COMPOUND SAMPLE RESULTS (ppm) LIMIT OF DETECTION (ppm) DILUTION FACTOR MS CONFIRMED Hexachlorobenzene... < 0.010 0.010 1.0 NO Gamma-BHC < 0.010 0.010 1.0 NO Oxychlordane < 0.010 0.010 1.0 NO Gamma-Chlordane < 0.010 0.010 1.0 NO Alpha-Chlordane < 0.010 0.010 1.0 NO 4,4'-DDE < 0.010 0.010 1.0 NO Endrin < 0.010 0.010 1.0 NO 4,4'—DDD < 0.010 0.010 1.0 NO 4,4"-DDT < 0.010 0.010 1.0 NO Alpha-BEC < 0.010 0.010 1.0 NO Heptachlor Epoxide.. < 0.010 0.010 1.0 NO o,p¦-DDE < 0.010 0.010 1.0 NO Trans-Nonachlor < 0.010 0.010 1.0 NO Dieldrin < 0.010 0.010 1.0 NO o,p'-DDD < 0.010 0.010 1.0 NO o,p'-DDT < 0.010 0.010 1.0 NO Mirex < 0.010 0.010 1.0 NO Beta-BHC < 0.010 0.010 1.0 NO Toxaphene < 0.050 0.050 1.0 NO Total PCB'8 < 0.050 0.050 1.0 NO File Name: C:\RT\UTAH\F1_477 ------- HES, Inc. nvironmental I § ervices, Inc. SAMPLE NUMBER: 60200477 FISH: BLACK BULLHEADERS FROM TREND GILLNET, 6/08/95 UTAH DEPARTMENT OF NATURAL RESOURCES PAGE 2 ASSAY MERCURY IN TISSUE ANALYSIS UNITS MG/KG .054 SELENIUM IN TISSUE 23 MG/KG METHOD REFERENCES ICP SPECTROSCOPY DAHLQUIST, R. L., AND KNOLL, J. W., "INDUCTIVELY COUPLED PLASMA - ATOMIC EMISSION SPECTROMETRY: ANALYSIS OF BIOLOGICAL MATERIALS AND SOILS FOR MAJOR, TRACE, AND ULTRA-TRRACE ELEMENTS," ALLIED SPECTROSCOPY, 32(1):1-29 (JAN./FEB). OFFICIAL METHODS OF ANALYSIS, 14TH EDITION, METHOD 43.292-43.296, AOAC, ARLINGTON, VIRGINIA (1984). OFFICIAL METHODS OF ANALYSIS, 1ST SUPPLEMENT, 14TH EDITION. METHOD 3.A01-3.A04 AOAC, ARLINGTON, VIRGINIA (1985). U.S. ENVIRONMENTAL PROTECTION AGENCY CONTACT LABORATORY PROGRAM, STATEMENT OF WORK, INORGANIC ANALYSIS, MULIMEDIA, MULICONCENTRATION REV. (DECEMBER 1987) PESTICIDES-PCBS IN TISSUES USDI-WS DETERMINATION OF ORGANOCHLORINE PESTICIDES ANNNS POLY CHLORINATED BIPHENYLS (PCBS) IN BIOLOGICAL TISSUES. HAZLETON WISCONSIN INC. % LIPID DETERMINATION RANDALL, R.C., LEE, H., OZRETICH. R.J., LAKE, J.L., AND PRUELL, PRUELL, R.J. "EVALUATION OF SELECTED LIPID METHODS FOR NORMALIZING POLLUTANT BIOACCUMUALATION". ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY, VOL 10, P.1431-1436,(1991) "STANDARD METHODS FOR THE EXAMINATION OF WATER AND WASTEWATER." ALPH, AWWA, WPCF 17TH ED., PP. 5-41, (1989) % MOISTURE DETERMINATION U.S. EPA CONTRACT LABORATORY, CONTRACT NO. 68-01-7418, STATEMENT OF WORK FOR ORGANIC ANALYSIS, EXHIBIT D, (REVISED NOVEMBER, 1987). ARSENIC IN TISSUE U.S.EPA, "METHODS FOR CHEMICAL ANALYSIS OF WATER AND WASTES", METALS 1-19 AND AND METHOD 206.2, CINCINNATI, OH (1979). U.S.EPA, "TEST METHODS FOR EVALUATING SOLID WASTE", SW-846, SECOND EDITION, METHOD 7060, WASHINGTON DC (REVISED APRIL 1984). U.S.EPA, CONTRACT LABORATORY PROGRAM (CLP), STATEMENT OF WORK ILM02.0, 1990. coc epicure nniv/c - tiAniCOM \A/ icrn M C I M ^"57 1 1 Phnne fidR-?32 - 3300 Fax 608-233-0502 ------- IF azleton nvironmental ervices, Inc. HES, Inc. SAMPLE NUMBER: 60200477 PAGE ISH: BLACK BULLHEADERS FROM TREND GILLNET, 6/08/95 UTAH DEPARTMENT OF NATURAL RESOURCES ETHOD REFERENCES (CONTINUED) ERCURY IN TISSUE .S. EPA, "TEST METHODS FOR EVALUATION SOLID WASTE,"EPA PUBLICATION NO. SW-846 SECOND EDITION, METHODS 3030,3040/AND 7470, WASHINGTON,DC (REVISED APRIL 1984) MERCURY IN FISH, "AOAC OFFICIAL METHODS OF ANALYSIS, 15TH EDITION, METHOD 77.15 (MODIFIED), (1990). °ELENIUM IN TISSUE .S.EPA, "METHODS FOR CHEMICAL ANALYSIS OF WATER AND WASTES", METALS 1-19 AND ETHOD 272.02, CINCINNATI,OH (1979). U.S.EPA, "TEST METHODS FOR EVALUATING SOLID WASTE", SW-846, SECOND EDITION, ETHOD 7841, WASHINGTON, DC (REVISED APRIL 1984). SEPA, CLP, STATEMENT OF WORK ILM02.0, 1990. 525 SCIENCE DRIVE • MADISON, WISCONSIN 537 1 1 Phone 608-232-3300 Fax 608-233-0502 Q printed on recycled paper ------- IH azleton nvironmental HES, Inc. § ervices, Inc. REPORT OF ANALYSIS EDWARD K.JOHNSON STATE OF UTAH DIVISION OF WILDLIFE RESOURCES NORTHEASTERN REGION 152 EAST 100 NORTH VERNAL, UT 84078-2126 FISH: LARGEMOUTH BASS FROM TREND GILLNET, 7/11/95 UTAH DEPARTMENT OF NATURAL RESOURCES PURCHASE ORDER NUMBER: PC56065000000056 SAMPLE NUMBER: 60200478 DATE ENTERED: 02/16/96 REPORT PRINTED: 04/15/96 ICP SPECTROSCOPY ELEMENTS ALUMINUM BARIUM BERYLLIUM BORON CADMIUM CHROMIUM COPPER IRON LEAD MAGNESIUM MANGANESE MOLYBDENUM NICKEL STRONTIUM VANADIUM ZINC PESTICIDES-PCBS IN TISSUES USDI-WS % LIPID DETERMINATION MG/KG 5 1 < 0 0 < 0 0 0 11 < 0 344 1 < 0 < 0 43 < 0 18 ,33 ,65 .020 .597 .059 .321 .395 .9 .492 .77 .394 .118 .0 .049 .7 SEE ATTACHED REPORT. SEE ATTACHED REPORT. % MOISTURE DETERMINATION SEE ATTACHED REPORT. ARSENIC IN TISSUE < .07 MG/KG ------- SAMPLE RESULTS SUMMARY CLIENT I.D. HLA NO. HLA No. CATALOG No. QC SET NO. DATE RECEIVED BASS, 7/11/95 60200478 P 60200478 AR 02/15/96 MATRIX TYPE % MOISTURE % LIPID MS ANALYZED DATE ANALYZED TISSUES ERR % 4.17 % NO Apr 3, 1996 Apr 2, 1996 COMPOUND SAMPLE RESULTS (ppm) LIMIT OF DETECTION (ppm) DILUTION FACTOR MS CONFIRMED Hexachlorobenzene... < 0.010 0.010 1.0 NO Gamma-BHC < 0.010 0.010 1.0 NO Oxychlordane < 0.010 0.010 1.0 NO Gamma-Chlordane < 0.010 0.010 1.0 NO Alpha-Chlordane < 0.010 0.010 1.0 NO 4,4'-DDE < 0.010 0. 010 1.0 NO Endrin < 0.010 0.010 1.0 NO 4,4'-DDD < 0.010 0.010 1.0 NO 4,4*-DDT < 0.010 0.010 1.0 NO Alpha-BHC < 0.010 0.010 1.0 NO Heptachlor Epoxide.. < 0.010 0.010 1.0 NO o,p'-DDE < 0.010 0.010 1.0 NO Trans-Nonachlor < 0.010 0.010 1.0 NO Dieldrin < 0.010 0.010 1.0 NO O,p'—DDD < 0.010 0.010 1.0 NO 0,p'—DDT < 0.010 0.010 1.0 NO Mirex < 0.010 0.010 1.0 NO Beta-BHC < 0.010 0.010 1.0 NO Toxaphene < 0.050 0.050 1.0 NO Total PCB's < 0.050 0.050 1.0 NO File Name: C:\RT\UTAH\F1 478 ------- HES, Inc. £ nvironmental I § ervices, Inc. SAMPLE NUMBER: 60200478 FISH: LARGEMOUTH BASS FROM TREND GILLNET, 7/11/95 UTAH DEPARTMENT OF NATURAL RESOURCES PAGE 2 ASSAY MERCURY IN TISSUE ANALYSIS .156 UNITS MG/KG SELENIUM IN TISSUE 46 MG/KG METHOD REFERENCES ICP SPECTROSCOPY DAHLQUIST, R. L., AND KNOLL, J. W. , "INDUCTIVELY COUPLED PLASMA - ATOMIC EMISSION SPECTROMETRY: ANALYSIS OF BIOLOGICAL MATERIALS AND SOILS FOR MAJOR, TRACE, AND ULTRA-TRRACE ELEMENTS," ALLIED SPECTROSCOPY, 32(1):1-29 (JAN./FEB). OFFICIAL METHODS OF ANALYSIS, 14TH EDITION, METHOD 43.292-43.296, AOAC, ARLINGTON, VIRGINIA (1984). OFFICIAL METHODS OF ANALYSIS, 1ST SUPPLEMENT, 14TH EDITION. METHOD 3.A01-3.A04 AOAC, ARLINGTON, VIRGINIA (1985). U.S. ENVIRONMENTAL PROTECTION AGENCY CONTACT LABORATORY PROGRAM, STATEMENT OF WORK, INORGANIC ANALYSIS, MULIMEDIA, MULICONCENTRATION REV. (DECEMBER 1987) PESTICIDES-PCBS IN TISSUES USDI-WS DETERMINATION OF ORGANOCHLORINE PESTICIDES ANNNS POLY CHLORINATED BIPHENYLS (PCBS) IN BIOLOGICAL TISSUES. HAZLETON WISCONSIN INC. % LIPID DETERMINATION RANDALL, R.C., LEE, H., OZRETICH. R.J., LAKE, J.L., AND PRUELL, PRUELL, R.J. "EVALUATION OF SELECTED LIPID METHODS FOR NORMALIZING POLLUTANT BIOACCUMUALATION". ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY, VOL 10, P.1431-1436,(1991) "STANDARD METHODS FOR THE EXAMINATION OF WATER AND WASTEWATER." ALPH, AWWA, WPCF 17TH ED., PP. 5-41, (1989) % MOISTURE DETERMINATION U.S. EPA CONTRACT LABORATORY, CONTRACT NO. 68-01-7418, STATEMENT OF WORK FOR ORGANIC ANALYSIS, EXHIBIT D, (REVISED NOVEMBER, 1987). ARSENIC IN TISSUE U.S.EPA, "METHODS FOR CHEMICAL ANALYSIS OF WATER AND WASTES", METALS 1-19 AND AND METHOD 206.2, CINCINNATI, OH (1979). U.S.EPA, "TEST METHODS FOR EVALUATING SOLID WASTE", SW-846, SECOND EDITION, METHOD 7060, WASHINGTON DC (REVISED APRIL 1984). U.S.EPA, CONTRACT LABORATORY PROGRAM (CLP), STATEMENT OF WORK ILM02.0, 1990. 525 SCIENCE DRIVE* MADISON, WISCONSIN 537 1 1 Phone 608-232-3300 Fax 608-233-0502 ------- HES, Inc. nvironmental I § ervices, Inc. wAMPLE NUMBER: 60200478 PAGE 3 ISH: LARGEMOUTH BASS FROM TREND GILLNET, 7/11/95 TAH DEPARTMENT OF NATURAL RESOURCES ETHOD REFERENCES (CONTINUED) "ERCURY IN TISSUE .S. EPA, "TEST METHODS FOR EVALUATION SOLID WASTE,"EPA PUBLICATION NO. SW-846 _ECOND EDITION, METHODS 3030,3040;AND 7470, WASHINGTON,DC (REVISED APRIL 1984) "MERCURY IN FISH, "AOAC OFFICIAL METHODS OF ANALYSIS, 15TH EDITION, METHOD 77.15 (MODIFIED), (1990). SELENIUM IN TISSUE .S.EPA, "METHODS FOR CHEMICAL ANALYSIS OF WATER AND WASTES", METALS 1-19 AND ETHOD 272.02, CINCINNATI,OH (1979). U.S.EPA, "TEST METHODS FOR EVALUATING SOLID WASTE", SW-846, SECOND EDITION, "ETHOD 7841, WASHINGTON, DC (REVISED APRIL 1984). SEPA, CLP, STATEMENT OF WORK ILM02.0, 1990. 525 SCIENCE DRIVE • MADISON, WISCONSIN 5371 1 Phone 608-232-3300 Fax 608-233-0502 G parted on recycled paper ------- CONTROL SPIKE SUMMARY CLIENT I.D. : CONTROL SPIKE MATRIX TYPE : TISSUES HES NUMBER : CS 022 8 % LIPID : 1.07 % COMPOUND CAS # SPIKE AMOUNT (ppm) SPIKE RESULTS (ppm) % RECOVERY Hexachlorobenzene•.. 118-74-1 0.500 0.410 82.0 Gamma-BHC 58-89-9 0.500 0.490 98.0 Oxychlordane 27304-13-8 0.500 0.510 102 .0 Gamma-Chlordane 5103-74-2 0.500 0.480 96.0 Alpha-chlordane 5103-71-9 0.500 0.520 104.0 4,4'-DDE 72-55-9 0.500 0.500 100.0 Endrin 72-20-8 0.500 0.560 112.0 4,4'-DDD 72-54-8 0.500 0.520 104.0 4,4'-DDT 50-29-3 0.500 0.480 96.0 Alpha-BHC 319-84-6 0.500 0.470 94.0 Heptachlor Epoxide.. 1024-57-3 0.500 0.490 98.0 o,p-DDE 3424-82-6 0.500 0.480 96.0 Trans-Nonachlor 39765-80-5 0.500 0.520 104.0 Dieldrin 60-57-1 0.500 0.490 98.0 O,p—DDD 53-19-0 0.500 0.490 98.0 0,p—DDT 789-02-6 0.500 0.490 98.0 Mirex 2385-85-5 0.500 0.480 96.0 Beta-BHC 319-85-7 0.500 0.530 106.0 ------- SURROGATE PERCENT Laboratory: HES Inc. Client : State of Utah PO #: 518677 RECOVERY SUMMARY Date of Analysis: 04/01/96 GC Column: DB-6 08 Instrument ID: HP07A Laboratory Sample # Client Sample # TMX * Recovery 60200475 BLUEGILLS, 7/11/95 77 % 60200476 WHITE SUCKERS,6/08/95 78 % 60200477 BLACK BULLHEADS,6/08/95 80 % 60200478 LARGEMOUTH BASS,7/11/95 84 % CS 0228 - CONTROL SPIKE 70 % BLK 0228 M. BLANK 80 % * - Advisory limits (20 - 150 %) Form II ------- Appendix E Phytoplankton Report ------- PHYTOPLANKTON FLORAS FROM PELICAN LAKE 1995-1996 by Samuel R. Rushforth Professor of Botany Brigham Young University Provo, Utah 84602 February, 1997 Printed on Recycled Paper ------- Abstract.-A total of 13 phytoplankton samples was collected and analyzed from Pelican Lake, Utah. These samples were collected as composite total plankton from the euphotic zone of the studied waters. Samples were analyzed quantitatively using Palmer Counting Chambers. Identifications were performed using standard taxonomic references and reference specimens. Samples were collected during the fall of 1995 and summer of 1996. A total of 42 taxa was identified from collected samples. Several additional taxa were present in the samples recorded as pennate diatoms and centric diatoms. The taxa collected and identified were distributed in 6 taxonomic divisions. Cyanophyta (blue-green algae or Cyanobacteria) with 7 taxa and Chlorophyta (green algae) with 26 taxa contained the majority of species encountered. ------- INTRODUCTION Pelican Lake is an important aquatic resource in Uintah County, Utah. Baseline data on biological water quality of this lake is scant. The present study was initiated in order to collect information on the biological water quality of the Pelican lake system. FIELD METHODS Phytoplankton populations were sampled during October, 1995; April, July, August, and September, 1996. Sampling was performed by staff persons of the Utah Department of Environmental Quality, Division of Water Pollution Control. Samples were collected from selected lakes and reservoirs throughout Utah. All samples were collected as total plankton samples from the euphotic zone of the waters investigated. Samples were collected from a total of 4 sampling stations corresponding to STORET numbers 493713, 493714, 493715, and 493716. Total plankton samples were collected by withdrawing water from the euphotic zone as determined by measuring secchi extinction depth and collecting a continuous column of water to a depth 3 times the secchi extinction depth. Samples from each collecting locality were placed in 2 liter containers, iced and returned to the laboratory for quantitative analysis. Samples were stored under refrigeration in the dark until processing was performed. LABORATORY METHODS Microscopic examination of total plankton samples was performed within one or two days of obtaining the samples. Samples were processed as quickly as possible to insure that algal populations were not changed appreciably by zooplankton predation or by algal population growth. At the time of processing, a 1 liter or a 0.5 liter subsample was removed after mixing. This subsample was suction filtered through a 1.2 micrometer pore size Millipore filter. The algal cells retained on the filter were re-suspended in 10 ml of distilled water in a 50 ml beaker. Aliquots were removed from this subsample and placed into a Palmer counting chamber for enumeration (Palmer and Maloney 1954). The Palmer cell is advantageous for counting total plankton samples since the algae can be studied at 400 magnifications rather than 160X. Counting at a greater magnification facilitates species identification, especially of smaller taxa. This increased resolution can be an important factor, especially for diatom work. Furthermore, studies of total plankton in standing water at high magnification are often important since they generally contain a more comprehensive suite of organisms than net plankton samples which tend to lose small organisms through the net mesh. One or two transects from each Palmer cell subsample was studied to determine the mean number of cells per transect. The number of algal cells present per liter of reservoir water was then calculated by multiplying the mean number of cells per ------- transect by appropriate multiplication factors. Microscopy on total plankton samples was performed using a Zeiss RA research microscope equipped with bright field and Nomarski interference phase contrast optics. Identifications were performed using standard taxonomic works and personal reference slide collections. A separate determination of biomass was made by determining the cubic micrometers of each taxon in each sample by multiplying the average volume in cubic micrometers for that taxon by its number per liter. These figures are reported in the tables in the Appendix 1 of this report. Numerical Analyses.--A percent relative density for each taxon was calculated using the volume for that taxon in the sample. The rank of each taxon in that sample was also calculated based upon the volume per liter. The number of species in each sample was tallied and recorded. A Shannon- Wiener diversity index for each stand was calculated using the volume per liter for each taxon (Margalef 1958, Patten 1962, Shannon and Weaver 1963). The formula for this index is S H' = -I Pi LOG Pj i=1 where; P; = the proportion of the total number of individuals in the i* species; and S = the number of species. A species richness factor was calculated after Atlas and Bartha (1981). This factor is similar to many other diversity factors and may be considered to be a second measure of diversity by many biologists. The formula for calculation of this evenness factor is d = S-1 log N where; S = the number of species; and N = the number of individuals. The number of species per sample was also tallied and recorded. A species evenness factor was calculated (Atlas and Bartha 1981) according to the formula e = Shannon-Weaver index log S where S is the number of species in the sample. RESULTS AND DISCUSSION Floristics.--The plankton flora of Pelican Lake sampled during the fall of 1995 and summer of 1996 contained a total of 42 taxa (Table 1). The plankton flora was comprised of 3 diatom (Bacillariophyta) taxa (as well as several not identified to the species level but counted in the categories pennate and centric diatoms), 26 green algae (Chlorophyta), 3 chrysophytes (Chrysophyta), 7 bluegreen algae or ------- Cyanobacteria (Cyanophyta), 1 euglenophyte (Euglenophyta), and 2 dinoflagellates (Pyrrhophyta). Phytoplankton studies of Pelican Lake will continue during future years. It is hoped that a continuing study of this sort will add to information concerning algal floras and biological water quality of standing waters of this system. A list of taxa present in each sample is provided in Appendix 1. Results of the numerical analyses are also are presented in Appendix 1. ------- Table 1. List of the algal taxa present in the phytoplankton of Pelican Lake, Utah during fall 1995 and summer 1996. BACILLARIOPHYTA Asterionella formosa Hass. Fragilaria crotonensis Kitton Fragilaria virescens Ralfs Centric diatoms Pennate diatoms CHLOROPHYTA Ankistrodesmus falcatus (Corda) Ralfs Botryococcus sudeticus Lemmermann Chlamydomonas species Closterium species Coelastrum species Cosmarium species Cruceginia rectangularis (A.Br.) Gay Euastrum species Mougeotia species Mougeotia species 2 Oedogonium species Oocystis borgei Snow Oocystis gigas Arch. Oocystis species Pandorina morum (Mull.) Bory Pediastrum duplex Meyen Scenedesmus arcuatus Lemmermann Scenedesmus bijuga (Turp.) Lagerheim Scenedesmus dimorphus (Terp.) Kutz. Scenedesmus quadricauda var. quadrispina G.M. Smith Scenedesmus species Sphaerocystis schroeteri Chod. Staurastrum gracile Ralfs Stichococcus species Tetraedron species Unknown spherical Chlorophyta CHRYSOPHYTA Chrysocapsa planktonica (West and West) Pascher Mallomonas species Dinobryon divergens Imhof ------- CYANOPYHTA Aphanizomenon flos-aquae (L.) Ralfs Chroococcus turgidus (Kuetz.) Naegeli Gomphosphaeria lacustris Chodat Gomphosphaeria aponina Kuetzing Merismopedia glauca (Ehr.) Naegeli Microcystis incerta Lemm. Oscillatoria species EUGLENOPHYTA Euglena species PYRRHOPHYTA Ceratium hirundinella (O.Mull.) Dujard. Peridinium species ------- REFERENCES Atlas, R.M. and R. Bartha. 1981. Microbial Ecology: Fundamentals and Applications. Addison-Wesley Publishing Co., Reading, Mass. pages 241-246. Margalef, R. 1958. "Trophic" typology versus biotic typology as exemplified in the regional limnology of northern Spain. Verh Intern. Ver. Limnol. 13:339-349. Palmer, C.M. and T.E. Maloney. 1954. A new counting slide for nannoplankton. Am. Soc. Limnol. Ocean. Spec. Pub. 21, 6 pp. Patten. B.C. 1962. Species diversity in net phytoplankton of Raritan Bay. J. Mar. Re- search 20:57-75. Shannon C.E. and W. Weaver. 1963. The Mathematical Theory of Communication. University of Illinois Press, Urbana. ------- APPENDIX 1: DATA FROM ANALYSES OF TOTAL PLANKTON SAMPLES FROM SELECTED LAKES AND RESERVOIRS IN UTAH COLLECTED DURING LATE SUMMER, 1996 ------- Algal taxa present in a total plankton sample collected from the euphotic zone of Pelican Lake 01 (493713) October 6, 1995. The percent relative density, species rank in the sample, number of cells per liter, and the volume of cells (in cubic micrometers/liter) are also provided. Descriptive statistics are also provided at the end of the list of taxa. Taxon Relative Density Rank Number Per Liter Cell Volume (/? / liter) BOTRYOCOCCUS SUDETICUS 1.42 6 11120 300240000 CENTRIC DIATOMS 0.04 12 11120 7784000 CERATIUM HIRUNDINELLA 8.97 3 11120 1890400000 COSMARIUM SPECIES 0.74 7 11120 155680000 FRAGILARIA CROTONENSIS 20.57 2 72280 4336800000 GOMPHOSPHAERIA LACUSTRIS 0.07 9 11120 13900000 OOCYSTIS SPECIES 0.04 10 5560 8340000 OSCILLATORIA SPECIES 0.03 13 5560 6116000 PEDIASTRUM DUPLEX 3.16 5 5560 667200000 PENNATE DIATOMS 8.14 4 2146160 1716928000 SCENEDESMUS BIJUGA 0.21 8 22240 44480000 SCENEDESMUS DIMORPHUS 0.04 11 5560 7784000 STAURASTRUM GRACILE 56.57 1 183480 11926200000 Shannon-Weaver Index [H1] = Species Evenness = Species Richness [d] = Number of species = 1.30 0.51 0.52 13 s H1 = -I P, LOG P, i=1 Where. P, = porportion of the total number of individuals in the i* species; S = the number of species. Species Evenness = H' / log S Where: S = the number of species; H' = Shannon-Weaver Index. Species Richness = S-11 log N Where: S = the number of species; N = the number of individuals. ------- Algal taxa present in a total plankton sample collected from the euphotic zone of Pelican Lake 02 (493714) October 6, 1995. The percent relative density, species rank in the sample, number of cells per liter, and the volume of cells (in cubic micrometers/liter) are also provided. Descriptive statistics are also provided at the end of the list of taxa. Taxon Relative Density Rank Number Per Liter Cell Volume (^3/ liter) CERATIUM HIRUNDINELLA 68.00 1 5560 945200000 FRAGILARIA CROTONENSIS 24.00 2 5560 333600000 OOCYSTIS SPECIES 6.00 3 55600 83400000 PENNATE DIATOMS 1.60 4 27800 22240000 UNKNOWN SPHERICAL CHLOROPHYTA 0.40 5 5560 5560000 Shannon-Weaver Index [H'] = 0.86 Species Evenness = 0.54 Species Richness [d] = 0.19 Number of species = 5 H' = -I P, LOG P, i=1 Where. P, = porportion of the total number of individuals in the i"1 species; S = the number of species. Species Evenness = H' / log S Where' S = the number of species; H' = Shannon-Weaver Index. Species Richness = S-1 / log N Where. S = the number of species, N = the number of individuals. ------- Algal taxa present in a total plankton sample collected from the euphotic zone of Pelican Lake 03 (493716) October 6, 1995. The percent relative density, species rank in the sample, number of cells per liter, and the volume of cells (in cubic micrometers/liter) are also provided. Descriptive statistics are also provided at the end of the list of taxa. Taxon Relative Rank Number Per Cell Volume Density Liter (//3 / liter) ASTERIONELLA FORMOSA CENTRIC DIATOMS OOCYSTIS SPECIES PEDIASTRUM DUPLEX PENNATE DIATOMS STICHOCOCCUS SPECIES TETRAEDRON SPECIES 0.80 0.46 16.92 79.63 1.06 0.33 0.80 4 6 2 1 3 7 5 5560 5560 94520 5560 11120 5560 5560 141780000 667200000 6672000 3892000 8896000 2780000 6672000 Shannon-Weaver Index [H'] Species Evenness Species Richness [d] Number of species 0.65 0.33 0.29 7 s H" = -I P, LOG P, 1=1 Where. P, = porportion of the total number of individuals in the i" species; S = the number of species. Species Evenness = H' / log S Where: S = the number of species; H' = Shannon-Weaver Index. Species Richness = S-1 / log N Where: S = the number of species; N = the number of individuals. ------- Algal taxa present in a total plankton sample collected from the euphotic zone of Pelican Lake 01 (493713) April 1996. The percent relative density, species rank in the sample, number of cells per liter, and the volume of cells (in cubic micrometers/liter) are also provided. Descriptive statistics are also provided at the end of the list of taxa. Taxon Relative Rank Number Per Cell Volume Density Liter (//3 / liter) CENTRIC DIATOMS 0.60 4 5560 3892000 FRAGILARIA VIRESCENS 8.99 2 5560 58380000 MOUGEOTIA SPECIES 85.62 1 5560 556000000 PENNATE DIATOMS 4.79 3 38920 31136000 Shannon-Weaver Index [H'] = 0.53 Species Evenness = 0.38 Species Richness [d] = 0.15 Number of species = 4 s H' = -I P, LOG P, i=1 Where: P, S Species Evenness = H' / log S Where. S Species Richness = S-1 / log N Where: S = porportion of the total number of individuals in the r species; = the number of species. = the number of species; H' = Shannon-Weaver Index. = the number of species; N = the number of individuals. ------- Algal taxa present in a total plankton sample collected from the euphotic zone of Pelican lake 01 (493713) July 10, 1996. The percent relative density, species rank in the sample, number of cells per liter, and the volume of cells (in cubic micrometers/liter) are also provided. Descriptive statistics are also provided at the end of the list of taxa. Taxon Relative Density Rank Number Per Liter Cell Volume (//31 liter) ANKISTRODESMUS FALCATUS 0.06 13 5560 4364600 CERATIUM HIRUNDINELLA 67.49 1 27800 4726000000 COSMARIUM SPECIES 1.11 8 5560 77840000 CRUCIGENIA RECTANGULARIS 0.19 11 5560 13344000 MOUGEOTIA SPECIES 7.94 3 5560 556000000 OOCYSTIS BORGEI 0.64 9 11120 44480000 OOCYSTIS GIGAS 0.36 10 5560 25020000 OOCYSTIS SPECIES 1.55 6 72280 108420000 OSCILLATORIA SPECIES 0.09 12 5560 6116000 PENNATE DIATOMS 1.52 7 133440 106752000 PERIDINIUM SPECIES 5.16 4 5560 361400000 SPHAEROCYSTIS SCHROETERI 8.73 2 5560 611600000 STAURASTRUM GRACILE 5.16 5 5560 361400000 Shannon-Weaver Index [H1] = 1.24 Species Evenness = 0.48 Species Richness [d] = 0.53 Number of species = 13 s = -5 i=1 Where: P, = porportion of the total number of individuals in the i" species; S = the number of species. Species Evenness = H' / log S Where: S = the number of species; H" = Shannon-Weaver Index. Species Richness = S-1 / log N Where: S = the number of species; N = the number of individuals. ------- Algal taxa present in a total plankton sample collected from the euphotic zone of Pelican Lake 02 (493714) July 10, 1996. The percent relative density, species rank in the sample, number of cells per liter, and the volume of cells (in cubic micrometers/liter) are also provided. Descriptive statistics are also provided at the end of the list of taxa. Taxon Relative Density Rank Number Per Liter Cell Volume (//3 / liter) BOTRYOCOCCUS SUDETICUS 6.29 4 5560 150120000 CENTRIC DIATOMS 0.33 10 11120 7784000 CERATIUM HIRUNDINELLA 39.62 1 5560 945200000 OOCYSTIS BORGEI 0.93 7 5560 22240000 OOCYSTIS SPECIES 1.75 6 27800 41700000 PENNATE DIATOMS 4.10 5 122320 97856000 PERIDINIUM SPECIES 30.30 2 11120 722800000 SCENEDESMUS QUADRICAUDA VAR. QUADRISPINA 0.28 11 5560 6672000 STAURASTRUM GRACILE 15.15 3 5560 361400000 TETRAEDRON SPECIES 0.56 9 11120 13344000 UNKNOWN SPHERICAL CHLOROPHYTA 0.70 8 16680 16680000 Shannon-Weaver Index [H1] = 1.53 Species Evenness = 0.64 Species Richness [d] = 0.46 Number of species = 11 H' = -Z P.LOGP, i=1 Where: P, = porportion of the total number of individuals in the i®1 species; S = the number of species. Species Evenness = H' I log S Where S = the number of species, H' = Shannon-Weaver Index. Species Richness = S-1 / log N Where: S = the number of species; N = the number of individuals. ------- Algal taxa present in a total plankton sample collected from the euphotic zone of Pelican Lake (493715) July 10, 1996. The percent relative density, species rank in the sample, number of cells per liter, and the volume of cells (in cubic micrometers/liter) are also provided. Descriptive statistics are also provided at the end of the list of taxa. Taxon Relative Density Rank Number Per Liter Cell Volume (^3 / liter) CERATIUM HIRUNDINELLA 60.07 1 11120 1890400000 FRAGILARIA CROTONENSIS 10.60 4 5560 333600000 GOMPHOSPHAERIA APONINA 0.71 9 5560 22240000 OOCYSTIS BORGEI 0.71 8 5560 22240000 OOCYSTIS GIGAS 1.59 6 11120 50040000 OOCYSTIS SPECIES 1.86 5 38920 58380000 OSCILLATORIA SPECIES 0.19 11 5560 6116000 PENNATE DIATOMS 0.42 10 16680 13344000 PERIDINIUM SPECIES 11.48 2 5560 361400000 STAURASTRUM GRACILE 11.48 3 5560 361400000 UNKNOWN SPHERICAL CHLOROPHYTA 0.88 7 27800 • 27800000 Shannon-Weaver Index [H1] = 1.33 Species Evenness = 0.55 Species Richness [d] = 0.46 Number of species = 11 H' = -I p, LOG p, i=1 Where: P, = porportion of the total number of individuals in the i* species; S = the number of species. Species Evenness = H' / log S Where: S = the number of species; H' = Shannon-Weaver Index. Species Richness = S-1 / log N Where: S = the number of species; N = the number of individuals. ------- Algal taxa present in a total plankton sample collected from the euphotic zone of Pelican Lake (493716) July 10, 1996. The percent relative density, species rank in the sample, number of cells per liter, and the volume of cells (in cubic micrometers/liter) are also provided. Descriptive statistics are also provided at the end of the list of taxa. Taxon Relative Density Rank Number Per Liter Cell Volume ((? / liter) CENTRIC DIATOMS 0.12 13 5560 3892000 CERATIUM HIRUNDINELLA 29.54 2 5560 945200000 CHLAMYDOMONAS SPECIES 0.07 14 5560 2224000 CHROOCOCCUS TURGIDUS 1.39 7 5560 44480000 CRUCIGENIA RECTANGULARIS 1.25 8 16680 40032000 GOMPHOSPHAERIA APONINA 0.70 10 5560 22240000 OOCYSTIS BORGEI 3.48 5 27800 111200000 OOCYSTIS SPECIES 7.04 4 150120 225180000 PENNATE DIATOMS 1.95 6 77840 62272000 PERIDINIUM SPECIES 33.88 1 16680 1084200000 SCENEDESMUS ARCUATUS 0.70 9 5560 22240000 SCENEDESMUS SPECIES 0.26 12 5560 8340000 SPHAEROCYSTIS SCHROETERI 19.11 3 5560 611600000 UNKNOWN SPHERICAL CHLOROPHYTA 0.52 11 16680 16680000 Shannon-Weaver Index [H'] = 1.66 Species Evenness = 0.63 Species Richness [d] = 0.59 Number of species = 14 H' = -I P, LOG P, i=1 Where P, = porportion of the total number of individuals in the i™ species; S = the number of species. Species Evenness = H' / log S Where: S = the number of species, H' = Shannon-Weaver Index. Species Richness = S-1 / log N Where: S = the number of species; N = the number of individuals. ------- Algal taxa present in a total plankton sample collected from the euphotic zone of Pelican Lake 01 (493713) August 6,1996. The percent relative density, species rank in the sample, number of cells per liter, and the volume of cells (in cubic micrometers/liter) are also provided. Descriptive statistics are also provided at the end of the list of taxa. Taxon Relative Rank Number Per Cell Volume Density Liter (pi3 / liter) CHLAMYDOMONAS SPECIES 0.02 19 5560 2224000 CHROOCOCCUS TURGIDUS 0.48 12 5560 44480000 CLOSTERIUM SPECIES 5.98 3 5560 556000000 COSMARIUM SPECIES 2.51 9 16680 233520000 EUGLENA SPECIES 1.33 10 16680 123432000 FRAGILARIA CROTONENSIS 3.59 7 5560 333600000 GOMPHOSPHAERIA APONINA 0.24 15 5560 22240000 GOMPHOSPHAERIA LACUSTRIS 0.07 18 5560 6950000 MICROCYSTIS INCERTA 4.18 5 38920 389200000 MOUGEOTIA SPECIES 59.76 1 55600 5560000000 OOCYSTIS GIGAS 2.96 8 61160 275220000 OOCYSTIS SPECIES 1.17 11 72280 108420000 OSCILLATORIA SPECIES 0.13 16 11120 12232000 PENNATE DIATOMS 5.07 4 589360 471488000 PERIDINIUM SPECIES 7.77 2 11120 722800000 SCENEDESMUS BIJUGA 0.12 17 5560 11120000 STAURASTRUM GRACILE 3.88 6 5560 361400000 TETRAEDRON MINIMUM 0.32 14 16680 30024000 UNKNOWN SPHERICAL CHLOROPHYTA 0.42 13 38920 38920000 Shannon-Weaver Index [H'] = 1.62 Species Evenness = 0.55 Species Richness [d] = 0.78 Number of species = 19 s H' = -Z P, LOG P, 1=1 Where: P, = porportion of the total number of individuals in the I"1 species; S = the number of species. Species Evenness = H' / log S Where: S = the number of species; H' = Shannon-Weaver Index. Species Richness = S-1 / log N Where: S = the number of species; N = the number of individuals. ------- Algal taxa present in a total plankton sample collected from the euphotic zone of Pelican Lake 02 (493714) August 6, 1996. The percent relative density, species rank in the sample, number of cells per liter, and the volume of cells (in cubic micrometers/liter) are also provided. Descriptive statistics are also provided at the end of the list of taxa. Taxon Relative Density Rank Number Per Liter Cell Volume (/i3 / liter) CERATIUM HIRUNDINELLA 23.55 1 5560 945200000 COELASTRUM SPECIES 13.85 5 5560 556000000 COSMARIUM SPECIES 5.82 6 16680 233520000 DINOBRYON DIVERGENS 0.30 16 5560 12232000 EUGLENA SPECIES 1.03 11 5560 41144000 GOMPHOSPHAERIA APONINA 0.55 15 5560 22240000 GOMPHOSPHAERIA LACUSTRIS 0.69 14 22240 27800000 MICROCYSTIS INCERTA 1.39 10 5560 55600000 MOUGEOTIA SPECIES 13.85 3 5560 556000000 MOUGEOTIA SPECIES 2 13.85 4 5560 556000000 OOCYSTIS GIGAS 1.87 8 16680 75060000 OOCYSTIS SPECIES 2.08 7 55600 83400000 PENNATE DIATOMS 1.44 9 72280 57824000 PERIDINIUM SPECIES 18.01 2 11120 722800000 TETRAEDRON MINIMUM 0.75 13 16680 30024000 UNKNOWN SPHERICAL CHLOROPHYTA 0.97 12 38920 38920000 Shannon-Weaver Index [H'] = Species Evenness = Species Richness [d] = Number of species = = 2.12 : 0.76 : 0.68 = 16 s H' = -I P.LOGP, i=1 Where: P, = porportion of the total number of individuals in the i* species; S = the number of species. Species Evenness = H' / log S Where: S = the number of species; H' = Shannon-Weaver Index. Species Richness = S-1 / log N Where: S = the number of species; N = the number of individuals ------- Algal taxa present in a total plankton sample collected from the euphotic zone of Pelican Lake 03 (493716) August 6, 1996. The percent relative density, species rank in the sample, number of cells per liter, and the volume of cells (in cubic micrometers/liter) are also provided. Descriptive statistics are also provided at the end of the list of taxa. Taxon Relative Rank Number Per Cell Volume Density Liter (u3 / liter) BOTRYOCOCCUS SUDETICUS 1.40 11 5560 150120000 CERATIUM HIRUNDINELLA 8.83 3 5560 945200000 CHROOCOCCUS TURGIDUS 0.42 22 5560 44480000 CHRYSOCAPSA PLANKTONICA 43.61 1 11120 4670400000 CLOSTERIUM SPECIES 1.45 10 11120 155680000 COSMARIUM SPECIES 0.73 18 5560 77840000 COSMARIUM SPECIES 2 0.73 19 5560 77840000 CRUCIGENIA RECTANGULARIS 0.87 16 38920 93408000 CRUCIGENIA SPECIES 0.10 26 11120 11120000 EUASTRUM SPECIES 0.38 23 5560 41144000 EUGLENA SPECIES 0.77 17 11120 82288000 GOMPHOSPHAERIA APONINA 1.04 12 27800 111200000 GOMPHOSPHAERIA LACUSTRIS 0.97 13 83400 104250000 MALLOMONAS SPECIES 0.06 27 5560 6672000 MERISMOPEDIA GLAUCA 0.93 14 22240 100080000 MICROCYSTIS INCERTA 4.15 6 44480 444800000 MOUGEOTIA SPECIES 5.19 5 5560 556000000 OEDOGONIUM SPECIES 12.46 2 11120 1334400000 OOCYSTIS GIGAS 1.64 9 38920 175140000 OOCYSTIS SPECIES 3.11 7 222400 333600000 OSCILLATORIA SPECIES 0.06 28 5560 6116000 PANDORINA MORUM 2.08 8 5560 222400000 PEDIASTRUM DUPLEX 6.23 4 5560 667200000 PENNATE DIATOMS 0.71 21 94520 75616000 SCENEDESMUS BIJUGA 0.21 24 11120 22240000 STAURASTRUM SPECIES 0.03 29 5560 2780000 TETRAEDRON SPECIES 0.19 25 16680 20016000 UNKNOWN SPHERICAL CHLOROPHYTA 0.93 15 100080 100080000 Shannon-Weaver Index [H'] = 2.16 Species Evenness = 0.64 Species Richness [d] = 1.21 Number of species = 28 s H" = -I P, LOG P, i=1 Where: P, = porportion of the total number of individuals in the i" species; S = the number of species. Species Evenness = H" / log S Where: S = the number of species; H' = Shannon-Weaver Index. Species Richness = S-1 / log N Where: S = the number of species; N = the number of individuals. ------- Algal taxa present in a total plankton sample collected from the euphotic zone of Pelican Lake 04 (493715) August 6,1996. The percent relative density, species rank in the sample, number of cells per liter, and the volume of cells (in cubic micrometers/liter) are also provided. Descriptive statistics are also provided at the end of the list of taxa. Taxon Relative Density Rank Number Per Liter Cell Volume (/i3 / liter) APHANIZOMENON FLOS-AQUAE 2.50 5 5560 105640000 CENTRIC DIATOMS 0.09 14 5560 3892000 CERATIUM HIRUNDINELLA 67.10 1 16680 2835600000 CHLAMYDOMONAS SPECIES 0.05 15 5560 2224000 FRAGILARIA CROTONENSIS 7.89 3 5560 333600000 MALLOMONAS SPECIES 0.16 11 5560 6672000 MICROCYSTIS INCERTA 3.95 4 16680 166800000 OOCYSTIS BORGEI 1.05 7 11120 44480000 OOCYSTIS GIGAS 1.18 6 11120 50040000 OOCYSTIS SPECIES 0.79 8 22240 33360000 PENNATE DIATOMS 0.21 10 11120 8896000 SCENEDESMUS BIJUGA 0.26 9 5560 11120000 SPHAEROCYSTIS SCHROETERI 14.47 2 5560 611600000 TETRAEDRON SPECIES 0.16 12 5560 6672000 UNKNOWN SPHERICAL CHLOROPHYTA 0.13 13 5560 5560000 Shannon-Weaver Index [H'] = Species Evenness = Species Richness [d] = Number of species = = 1.17 : 0.43 : 0.63 = 15 s H' = -1 P, LOG P, i=1 Where. P, = porportion of the total number of individuals in the iffi species; S = the number of species. Species Evenness = H' / log S Where S = the number of species; H' = Shannon-Weaver Index. Species Richness = S-1 / log N Where: S = the number of species; N = the number of individuals. ------- Algal taxa present in a total plankton sample collected from the euphotic zone of Pelican Lake (493715) September 16, 1996. The percent relative density, species rank in the sample, number of cells per liter, and the volume of cells (in cubic micrometers/liter) are also provided. Descriptive statistics are also provided at the end of the list of taxa. Taxon Relative Rank Number Per Cell Volume Density Liter (fj3 / liter) CENTRIC DIATOMS 0.28 8 5560 3892000 CERATIUM HIRUNDINELLA 68.99 1 5560 945200000 CLOSTERIUM SPECIES 5.68 4 5560 77840000 COSMARIUM SPECIES 5.68 5 5560 77840000 OOCYSTIS GIGAS 9.13 2 27800 125100000 OOCYSTIS SPECIES 6.09 3 55600 83400000 PENNATE DIATOMS 2.92 6 50040 40032000 UNKNOWN SPHERICAL CHLOROPHYTA 1.22 7 16680 16680000 Shannon-Weaver Index [H*] = 1.14 Species Evenness = 0.55 Species Richness [d] = 0.33 Number of species = 8 s H' = -1 P, LOG P, i=1 Where: P, = porportion of the total number of individuals in the i81 species; S = the number of species. Species Evenness = H' / log S Where: S = the number of species; H' = Shannon-Weaver Index. Species Richness = S-1 / log N Where: S = the number of species; N = the number of individuals. ------- Appendix F QA/QC Report ------- Michael O. Leavitt Governor Dianne R. Nielson, Ph.D. Executive Director Don A. Ostler, P.E. Director O "Vf~ ja. f- DEPARTMENT OF ENVIRONMENTAL QUALITY DIVISION OF WATER QUALITY MEMORANDUM TO: Richard Denton ^ Monitoring Section Manager FROM: Arne Hultquist /A j-f Environmental Scientist DATE: February 18,1997 SUBJECT: Quality Assurance Analyses of the Pelican Lake Clean Lake Project Enclosed is the report of Pelican Lake Clean Lake project quality assurance analysis of blind duplicate sampling done in the 1996 water year. The analysis uses regression equations published in "Estimation of Generic Quality Control Limits for Use in a Water Pollution Laboratory", published by EPA in May, 1991. The report value at the site is used as the mean value and a 95% confidence interval is generated around the value with a Z value of 2.0. Although this methodology is statistically weak because the mean recovery is generated by one data point, the error is on the conservative side, i.e. duplicate values will be reported outside the 95% confidence interval at a greater frequency than if several measurements were used to generate the mean recovery value. This methodology is currently being used by several states within Region VHI and is acceptable to Region VIII of the EPA (Rick Edmonds, Region VIE). Duplicate sampling was performed during the 1996 water year at two sites of the Pelican Lake water monitoring project. The replicate samples were given "dummy" names, storet numbers, and field sheets to produce a blind duplicate sample. The term "blind duplicate" refers to a sample where the analyst is unaware of the duplication. This effort was performed to increase the validity of the data and expose any problem analyses or sampling techniques. The validity is increased by demonstrating the reproducability of the reported values. May I draw your attention to items in the report. None of the duplicate samples showed significant differences in several analyses. None of the analyses showed significant differences in several duplicate samples. Some reported values outside the confidence interval might be attributed to samples exceeding the holding time for that analysis. For all analyses most of the reported values might be attributed to the normal error associated with sampling and laboratory analyses. For some values near the detection limit the confidence interval may not be appropriate because the data used ------- Memorandum February 18, 1997 Page 2 to generate the regression equations does not include data in that range. For all analyses that had a duplicate taken with reported values that had sufficient significant figures to determine if values fell within the confidence interval, the percentage of values that did not fall within the interval was 6.1%. All agencies involved in this project should be congratulated on the results of analyses, including the Division of Laboratory Services. Copies of this data are included in the end of this report. If you have any questions or comments on this report, please feel free to contact me. ------- |