Board Meeting Agenda August 17, :00 AM (estimated 2 hour duration) Location: Call in Information: Agenda Item 1 Call to Order

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1 PO Box 915 Zephyr Cove, NV x 21 Board Meeting Agenda August 17, :00 AM (estimated 2 hour duration) Location: Douglas County Library, 233 Warrior Way, Zephyr Cove, NV Call in Information: (515) , code # Agenda Item 1 Call to Order 2 Supervisor Roll Call 3 Pledge of Allegiance 4 Approval of the Agenda This is the tentative schedule for the meeting. The Board reserves the right to take items in a different order to accomplish business in the most efficient manner. The Board may combine two or more agenda items for consideration. The Board may remove an item from the agenda or delay the discussion relating to an item on the agenda at any time. 5 Public Interest Comments (No Action) Possible Changes to Agenda Order and Timing. Items on the agenda may be taken out of order, combined with other items, withdrawn from the agenda, moved to the agenda of another later meeting; moved to or from the Consent section, or they may be voted on in a block. Items with a specific time designation will not be heard prior to the stated time, but may be heard later. Items listed in the Consent section of the agenda are voted on as a block and will not be read or considered separately unless withdrawn from the Consent agenda. Posted: Nevada Tahoe Conservation District Administrative Office, Douglas County Clerk, Washoe County Clerk, NV Division of Conservation Districts. Members of the public who are disabled and require special accommodations or assistance at the meeting are requested to telephone the NTCD Administrative Office at (775) x21 three days prior to the Board meeting. Please contact Dana Olson at PO Box 915, Zephyr Cove, NV 89448; or dolson@ntcd.org; or phone #21 to obtain supporting material for the agenda. Supporting material may also be found at 1

2 CONSENT CALENDAR The consent calendar consists of items 8 and 9 below. Items appearing on the Consent Calendar are items that can be adopted with one motion unless pulled by a Supervisor or a member of the public. Members of the public who wish to have a consent item placed on the Administrative Agenda shall make that request during the public comment section at the beginning of the meeting and specifically state why they are making the request. When items are pulled for discussion, they will be automatically placed at the beginning of the Administrative Agenda or may be continued until another meeting. Motion to approve the Consent Calendar Agenda Items Page # 6 Agency Reports, Discussion/Possible Action For Possible Action: Natural Resources Conservation Service (NRCS) report For Possible Action: National Association of Conservation Districts (NACD) report For Possible Action: Department of Conservation and Natural Resources Conservation District Program report For Possible Action: Nevada Association of Conservation Districts (NvACD) report 7 Discussion/Possible Action (Business) For Possible Action: Approval of the Board of Supervisors meeting minutes for June 20, 2017 For Possible Action: National Association of Conservation Districts Urban Agriculture Grant Agreement District Manager Kelly signed a grant agreement with National Association of Conservation Districts for the Urban Agriculture Grant for $19,

3 ADMINISTRATIVE CALENDAR Agenda Items Page # 8 Consent Calendar items pulled for further discussion Item(s) pulled from the Consent Calendar will be heard at this time. 9 For Possible Action: Approval of the NTCD financial reports for July As of 6/30/17, the District s Fund balance was $101,221. This represents the District s available spendable resources, or assets less liabilities. June had a deficit of $10,355. Liability insurance for the year of $4,517 was paid. Two employees took vacations which accounted for $4,662 of additional General Fund spending than average. Also our quarterly POOL/PACT payment of $984 was paid. This is the District s 1 st month of the new fiscal year. 10 For Possible Action: Update of Herbicide use in the Tahoe Keys Supervisor Glen Smith discussed in the May 18 th and June 20 th board meetings the potential of the use of herbicides in Lake Tahoe. As discussed at the June 20 th meeting, Supervisor Smith has drafted a letter for Tahoe Keys Property Owners Association, Tahoe Resource Planning Agency, Nevada Division of Environmental Protection and the Lahontan Regional Water Quality Control Board for the Board to review and approve. Also informing Tahoe Resource Conservation District of this letter For Possible Action: Moody Donations There is a balance of $ of donations giving to the district. Discussion is needed on what action should be taken to disburse these funds. 12 For Possible Action: Reminder of the need of Board of Supervisors Pictures for New Website The new website is Live! d with that a new Board of Supervisor s page. The District is asking for individual pictures of each Board for this page. 13 For Possible Action: Staff Report 14 Supervisor s Comments 15 Public Interest Comments 16 For Possible Action: Motion to Adjourn 3

4 PO Box 915 Zephyr Cove, NV x 21 Board Meeting Minutes July 20, :00 AM Location: The Parasol, 948 Incline Way, Incline Village, NV Present: Absent: Supervisor G. Smith Supervisor Cook Supervisor Nelson Supervisor McCarthy Supervisor Sarnoff (vis telephone) Supervisor Berkbigler Supervisor Perlman-Whyman Supervisor Martin M. Kelly, District Manager D. Olson, Asst. District Manager Agenda Item 1 Call to Order by Supervisor Smith 2 Supervisor Roll Call (see above) 3 Pledge of Allegiance 4 Approval of the Agenda 5 Public Interest Comments (No Action): None Possible Changes to Agenda Order and Timing. Items on the agenda may be taken out of order, combined with other items, withdrawn from the agenda, moved to the agenda of another later meeting; moved to or from the Consent section, or they may be voted on in a block. Items with a specific time designation will not be heard prior to the stated time, but may be heard later. Items listed in the Consent section of the agenda are voted on as a block and will not be read or considered separately unless withdrawn from the Consent agenda. Posted: Nevada Tahoe Conservation District Administrative Office, Douglas County Clerk, Washoe County Clerk, NV Division of Conservation Districts. Members of the public who are disabled and require special accommodations or assistance at the meeting are requested to telephone the NTCD Administrative Office at (775) x21 three days prior to the Board meeting. Please contact Dana Olson at PO Box 915, Zephyr Cove, NV 89448; or dolson@ntcd.org; or phone #21 to obtain supporting material for the agenda. Supporting material may also be found at 4

5 CONSENT CALENDAR The consent calendar consists of items 8 and 9 below. Items appearing on the Consent Calendar are items that can be adopted with one motion unless pulled by a Supervisor or a member of the public. Members of the public who wish to have a consent item placed on the Administrative Agenda shall make that request during the public comment section at the beginning of the meeting and specifically state why they are making the request. When items are pulled for discussion, they will be automatically placed at the beginning of the Administrative Agenda or may be continued until another meeting. Motion to approve the Consent Calendar Agenda Items 6 Agency Reports, Discussion/Possible Action For Possible Action: Natural Resources Conservation Service (NRCS) report. No report provided For Possible Action: National Association of Conservation Districts (NACD) report No report provided For Possible Action: Department of Conservation and Natural Resources Conservation District Program report No report provided For Possible Action: Nevada Association of Conservation Districts (NvACD) report No report provided 7 Discussion/Possible Action (Business) For Possible Action: Approval of the Board of Supervisors meeting minutes for May 18, 2017 For Possible Action: Contract Amendment for Nevada Department of Transportation, Zephyr Cove District Manager Kelly signed an amendment with NDOT for Zephyr Cove increasing the contract total from $350,000 to $390,000 to cover change orders a low bid in excess of the construction budget. For Possible Action: Contract Amendment for United States Forest Service, Zephyr Cove District Manager Kelly signed an amendment with NDOT for Zephyr Cove increasing the contract total from $300,000 to $315,000 to cover change orders a low bid in excess of the construction budget. For Possible Action: New Contract for Wildscape District Manager Kelly signed a new contract for $20,000 with Wildscape for Qualified SWPPP (Storm Water Pollution Prevention Plan) Developer and Practitioner (QSP/QSD) support services on May 4, For Possible Action: Review of Dana Olson s Offer Letter and Job Description Dana Olson has been hired on as Assistant District Manager with the base Salary Range of: $56,602 to $2,452 (Employee-Paid PERS Plan). This is equal to the ES III salary range. 5

6 For Possible Action: Approval of the NTCD financial reports for May 2017 As of 5/31/17, the District s Fund balance was $113,115. This represents the District s available spendable resources, or assets less liabilities. May had a surplus of $4,557. May included extra billing to the General Fund to train Asst. District Manager Olson but still ended with a surplus do to minimal General Fund spending by the rest of the staff and minimal other expenditures. Year-to-date the District has a surplus of $12, FY2017 is still projected to end near the annual goal of break-even. ADMINISTRATIVE CALENDAR Agenda Items 8 Consent Calendar items pulled for further discussion Item(s) pulled from the Consent Calendar will be heard at this time. None. Approved by Supervisor Nelson, seconded by Supervisor McCarthy, motion carried unanimously. 9 For Possible Action: Approval of the NTCD financial reports for June As of 6/30/17, the District s Fund balance was $112,483. This represents the District s available spendable resources, or assets less liabilities. June had a deficit of $632. June included extra billing to the General Fund to train Asst. District Manager Olson but the rest of the billable staff did not bill much time to the General Fund. The District is closing the Fiscal Year with a surplus of $11,842. Approved by Supervisor Cook, seconded by Supervisor Nelson, motion carried unanimously. 10 For Possible Action: Review and Reapprove District Manager Signing Authority This item is to revisit and update the Signing Authority that was given to the District Manager in As of September 3, 2009, the District Manager was given the signing authority of: New Contracts: $20,000 an up to one year in duration Contract Amendments: $50,000 and up to 2 years in duration To account for inflation and needs of District Manager Kelly, it is being requested that the New Contract limit be raised to $25,000. District Manager Kelly presented and reviewed the items on the consent calendar that it had been used for. Any such above actions shall be summarized and presented to the Board at the next regularly scheduled meeting. Approved by Supervisor Cook, seconded by Supervisor McCarthy, motion carried unanimously. 11 For Possible Action: Update of Herbicide use in the Tahoe Keys Supervisor Glen Smith discussed in the May 18 th board meeting the potential of the use of herbicides in Lake Tahoe. There was a motion to discuss potential NTCD action on this matter during the next board meeting. Supervisor Smith talked about writing a letter to Nevada Division of Environmental Protection Bureau of Safe Drinking Water and Lahontan Regional Water Quality Control Board stating that the District is against using herbicides in Lake Tahoe until all other methods are exhausted. He discussed the hazardous byproducts that the herbicides break down and that the Tahoe Water Suppliers association is against the use also. The Tahoe Keys submitted a permit for herbicide 6

7 use for spring Supervisor Smith will draft a letter and bring it to the board for approval. Will vote when Supervisor Smith presents letter. 12 For Possible Action: Moody Donations There is a balance of $ of donations giving to the district. Discussion is needed on what action should be taken to disburse these funds. There was discussion regarding using the funds to do upkeep on the demo garden in front of the office. This item has been put on hold till next board meeting since Supervisor Martin was not present and he knows the most about these funds. 13 For Possible Action: Board of Supervisors Pictures for New Website The District is designing a new website, and with that a new Board of Supervisor s page. The District is asking for either individual pictures or a group photo of the Board for this page. Each board member will provide their own picture for the website. 14 For Possible Action: Staff Report The District received the National Association of Conservation District s Urban Agriculture grant. 15 Supervisor s Comments 16 Public Interest Comments 17 For Possible Action: Motion to Adjourn Approved by Supervisor Cook, seconded by Supervisor Nelson, motion carried unanimously. 7

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12 INCOME General Fund INCOME AND EXPENSE REPORT GENERAL FUND GENERAL FUND NV TAHOE CONSERVATION DIST. July 2017 YTD July 2017-June 2018 Budget Percent of year = 8% Variance Favorable (Unfavorable) % of Budget Community Grants-Income Carson City 3, (3,000.00) 0% Douglas County 25, (25,000.00) 0% NV Division of Conser. District 4, (4,000.00) 0% Washoe County Community Grant % Total Community Grants-Income , (32,000.00) 0% Grants-Income 0.00 Administration Fee Income 0.00 Personnel Cost Income 0.00 Wages Weighted Rate-Grant Income 0.00 Grants-Income - Other 0.00 Total Grants-Income Income-Pass Thru Subcontractor 0.00 Interest 0.00 Miscellaneous Income (0.01) (0.01) (0.01) Prior Year Income 0.00 Services Rendered Vehicle Use Income 0.00 Wage Reimbursements 0.00 Indirect Cost Income-General F (GL Shows in Expense Category) 10, , (140,500.00) 0.00 TOTAL INCOME 10, (0.01) 172, (172,500.01) 0.00 EXPENSES Advertising-Expense Building Expense Building Repairs/Maint-Expense , , Total Building Expense , , Conference & Training-Expense Food 0.00 Lodging 0.00 Parking 0.00 Registration Fees (995.00) Travel/Transportation 0.00 Conference & Training-Expense - Other Total Conference & Training-Expense , , Deposit Security Donation-Expense Dues and Subscriptions-Expense 0.00 Membership/Dues District Membership/Dues Staff Dues and Subscriptions-Expense - Other 1, , Total Dues and Subscriptions-Expense , , Equipment-Expense 0.00 Cell Phones Computer Hardware & Software 6, , Computer Maintenance & Repair Office Equipment & Furniture 0.00 Rental/Leasing Fees Equipment 5, , Repairs & Maintenance Equipment Telephone System 0.00 Equipment-Expense - Other Total Equipment-Expense , , Indirect Cost (See Excel Income Section) Administrative Cost-Grants 0.00 Indirect Cost - Other 0.00 Total Indirect Cost See Revenues above

13 INCOME AND EXPENSE REPORT GENERAL FUND GENERAL FUND NV TAHOE CONSERVATION DIST. July 2017 YTD July 2017-June 2018 Insurance-Expense 0.00 Budget Percent of year = 8% Variance Favorable (Unfavorable) % of Budget E&O/Prop/ Liability Insurance 4, , , Total Insurance-Expense 4, , , Meetings Expense Miscellaneous Expense Other Expenses 0.00 Professional Fees-Expense Audit 12, , Bank fees Computer/Software Maintenance Professional Fees-Expense - Other Total Professional Fees-Expense , , Rents and Leases Office Space Lease 1, , , , Storage Rents Rents and Leales-Other Total Rents and Leases 1, , , , Service Charges Supplies-Expense Office Supplies , Photocopies Postage and Delivery (57.50) (57.50) 1, Publication/Printing Supplies-Expense - Other Total Supplies-Expense , , Telecommunications Cell Phone 0.00 Internet Fees Long Distance 0.00 Phone Services 5, , Telephone-Expense - Other 0.00 Total Telecommunications-Expense , , Vehicles-Expense 0.00 District Vehicle Use (130.01) (130.01) (2,500.00) Fuel-Expense , , License & Maintenance 1, , Mileage Reimbursement Expense Vehicle Fuel Reimbursement Expense Vehicle Total Vehicles-Expense (100.01) (100.01) 1, , (0.09) Wages Payroll Clearing Account 1, , Wages-Administrator Wages - Asst. Dist. Mgr (DO) 5, , Wages-ES III (DF) 3, , Professional Engineer (MG) 1, , Professional Engineer (MK) , Wages-Staff Engineer Wages-ES III (MP) Wages - Other Uncompensated Absence-Reimb Exp (3,594.27) (3,594.27) Total Wages 13, , , , Wages-Overhead/Fringe

14 INCOME AND EXPENSE REPORT GENERAL FUND GENERAL FUND NV TAHOE CONSERVATION DIST. July 2017 YTD July 2017-June 2018 Budget Long Term Disability , Total Wages-Overhead/Fringe , Percent of year = 8% Variance Favorable (Unfavorable) % of Budget Total Wages/Ovrhead 14, , , , Revolving Account TOTAL EXPENSES (No Indirect included) 20, , , , NET REVENUE OVER/(UNDER) EXPENSES (10,354.54) (20,892.07) Fund Balance (total equity) $ 101,221 14

15 11:15 AM Nevada Tahoe Conservation District 08/10/17 Balance Sheet Accrual Basis As of July 31, 2017 Jul 31, 17 ASSETS Current Assets Checking/Savings Petty Cash 0.86 Wells Fargo - General , Total Checking/Savings 33, Accounts Receivable Accounts Receivable 97, Total Accounts Receivable 97, Total Current Assets 130, Other Assets Prepaid expenses 1, Total Other Assets 1, TOTAL ASSETS 132, LIABILITIES & EQUITY Liabilities Current Liabilities Accounts Payable Accounts Payable 4, Total Accounts Payable 4, Other Current Liabilities Deferred Income-Moody donations Deferred Income - Demo garden Deferred Income - NACD 5, Liab.Uncompensated Absences 19, Payroll Liabilities NV Unemployment Bond Factors Pa NV Unemployment Payable Total Payroll Liabilities Total Other Current Liabilities 26, Total Current Liabilities 30, Total Liabilities 30, Equity Opening Balance 11, Prior Earnings 100, Net Income -11, Total Equity 101, TOTAL LIABILITIES & EQUITY 132, Page 1

16 11:16 AM Nevada Tahoe Conservation District 08/10/17 A/R Aging Summary As of July 31, 2017 Current > 90 TOTAL Cal Trans Task # , , Cal Trans Task Order # , , NDEP Program Reg 6, , NDOT LCCP Reg & Imp , , NDOT Pittman , , NDOT ZC 3, , , NDSL Green St Infrastructure 6, , NDSL Pittman , , NRCS 3, , , TRCD SNPLMA Monitoring , USBOR RWC Continuation USFS BCX 11, , , USFS ZC GID , , Washoe Co. 100% Parcel BMPs Wildscape CalTrans Y-Trout 2, , , , Wildscape Hassett Marinas , , , Wildscape TKM 1, , , TOTAL 36, , , , , Page 1

17 11:17 AM Nevada Tahoe Conservation District 08/10/17 A/P Aging Summary As of July 31, 2017 Current > 90 TOTAL MKD Construction Inc. 2, , Monica Grammenos AP Wells Fargo Business Card Kelly Wells Fargo Business Card Thorpe , Western Nevada Supply TOTAL 4, , Page 1

18 PO Box 915 Zephyr Cove, NV ntcd.org August 17, 2017 Gil Vazquez, WRCE State Water Resources Control Board Division of Water Quality 1001 I St, 15 th Floor Sacramento, CA Subject: Comments on Aquatic Pesticide Application Plan for Tahoe Keys Property Owners Association Dear Mr. Vazquez, The mission of the Nevada Tahoe Conservation District is to promote the conservation and improvement of the Lake Tahoe Basin's natural resources by providing leadership, education, and technical assistance to all basin users. In keeping with this mission, the Nevada Tahoe Conservation District is AGAINST THE APPLICATION OF AQUATIC HERBICIDES IN LAKE TAHOE. We have considered the following information in our study of this issue: - Lake Tahoe is used for drinking water by most of the communities around the lake. Water treatments currently in use do not remove herbicides and their degradation products. - The flow of surface water from Tahoe Keys is driven by prevailing westerly winds east along the shore toward many surface water intakes. - Herbicides proposed by TKPOA have degradation products which have longer half-lives than the herbicide and are listed at up to 770 days (Penoxsulam chemical fact sheet) - The TKPOA Exemption Application specifies a barrier to be kept in place for 14 days depending on sampling of herbicide residue. - When Tahoe Keys was constructed in the 1960 s, a lake water circulation system was installed to prevent weed growth. This system has been turned off for about 30 years. - Tahoe Keys POA has investigated many methods and spent considerable funds dealing with weeds over the years, but has additional non-chemical means to fully explore. In summary, the NTCD Board of Supervisors has evaluated the TKPOA Aquatic Pesticide Application Plan and has voted to oppose its approval. Glen Smith Chairman, NTCD Board of Supervisors 18

19 Tahoe Water Suppliers Association is Greatly Concerned by Potential Herbicide Use at Tahoe Keys to Control Aquatic Weeds 1220 Sweetwater Road Incline Village, Nevada, TWSA Members: Cave Rock Water System Edgewood Water Company Glenbrook Water Cooperative Incline Village GID Kingsbury GID Lakeside Park Association North Tahoe PUD Round Hill GID Skyland Water Company South Tahoe PUD Tahoe City PUD Zephyr Water Utility Who We Are The Tahoe Water Suppliers Association (TWSA) is an organization whose members are the 11 principal Tahoe Basin municipal drinking water providers with intakes that draw water from Lake Tahoe. These providers serve the majority of water consumers in the Lake Tahoe Basin. TWSA s mission is to develop, implement and maintain an effective watershed control program in order to satisfy recommendations in watershed sanitary surveys, advocate for the protection of Lake Tahoe as a viable source of drinking water, and to satisfy additional state and federal requirements. Consistent with this mission, TWSA has been actively engaged in the public process with state and federal regulatory agencies working to address the proliferation of aquatic invasive weeds at Lake Tahoe and the impact potential control strategies may have on the quality of Lake Tahoe s drinking water and the infrastructure used to procure and deliver that water. The Problem Nuisance non-native and native aquatic plants have been observed in marinas and other recreational areas in Lake Tahoe and the Lake Tahoe Basin. Dense coverage of aquatic plants can degrade the water quality and aquatic habitat by making the ecosystem less favorable for native organisms that are adapted to the pristine water of Lake Tahoe. The excessive growth of these nuisance plants interferes with boating and recreational access to Lake Tahoe when they become entangled in propellers and keels. Plants can also ensnare swimmers and divers and compromise their safety. Various agencies, experts and observers agree that the greatest single concentration of aquatic plant and weed problems are in the Tahoe Keys development on the Lake s southwest shore. The Keys is a residential subdivision that includes inland waterways and coves and is home to the Tahoe Keys Marina, Tahoe s largest marina facility. The Keys totals 172 acres of water surface accessible to and from Lake Tahoe through two boating channels. Tahoe Keys Property Owners Association (TKPOA) Integrated Weed Management Plan By order of the California Lahontan Regional Water Quality Control Board, the TKPOA has funded preparation of an Integrated Weed Management Plan for the Tahoe Keys Lagoons. The stated purpose of the Plan is to present a strategy to control and manage invasive and nuisance aquatic plants. One of the control strategies identified in the Plan is the use of aquatic herbicides. Aquatic Plants and Weeds of Greatest Concern The multi-agency Lake Tahoe Aquatic Invasive Species (AIS) Coordination Committee continues to inventory and track the presence and growth of aquatic nuisance and invasive plants and weeds and guide their management and control at Lake Tahoe. Specific to the Tahoe Keys, the Tahoe Keys 2014 Aquatic Plant Survey is another document prepared by the TKPOA. Three species are considered to be the most significant threat. 19

20 Curlyleaf Pondweed - This plant is extremely adaptable and its spread beyond marinas to sections of Tahoe s nearshore is very visible. It is considered the main threat to Lake Tahoe s aquatic habitat. Pondweed turions spread as seed packets and can survive harsh conditions. Eurasian Water Milfoil - Colonization in Lake Tahoe itself is more limited, so this plant is more a threat to marinas and other areas where water is more shallow, sheltered and warmer. The plant spreads via fragments. Coontail - This species is native to Lake Tahoe. It thrives in deeper water. It becomes a safety and nuisance factor for boating, swimming, and diving due to its floating and matting nature. TWSA Perspectives and Concerns Our members provide water service to all manner of users, rate payers, tax payers and visitors to Lake Tahoe. We are dedicated to the protection of Lake Tahoe s pristine water quality and healthy ecosystem. We also appreciate recreational boating and water-based sports in the world-renown destination resort region. We recognize that the growth of invasive plants and weeds is a serious problem. Prompted by the exponential growth of invasive weeds, federal and state water quality regulators have lifted a previous prohibition against the use of aquatic herbicides in the waters of Lake Tahoe as one of the control strategies for invasive weeds. The chemicals proposed for use have been tested and used primarily in lower quality waters. TWSA believes Lake Tahoe s special status as a Tier 3 Outstanding National Resource Water (ONRW) warrants a priority focus on non-chemical methods before the use of chemical herbicides is considered. TWSA also urges the IWMP to include a more detailed analysis of the potential impacts of herbicides on drinking water supply. TWSA members share concerns about the potential impact of herbicides on our water intake systems and quality of the water we provide to our customers. Tahoe s municipal water treatments systems are not specifically designed to remove chemical contaminants. Six TWSA members hold filtration exemption status from the U.S. Environmental Protection Agency (US EPA). This is a rare status, usually granted only to a non-contact watershed. It has been granted based on the fact that Tahoe tap water is some of the cleanest and purest drinking water in the world. The treatment process of ultra-violet and ozone disinfection used by members with filtration exemption status is designed for the deactivation of potential biological contaminants, not chemicals. Their effectiveness and efficiency at removing chemical compounds is unknown. In addition to TWSA members, a number of water systems owned by private companies and individuals also draw water from Lake Tahoe. If chemical contaminants begin to be detected near Lake Tahoe water intakes, our ratepayers and the owners of small private water systems may face costly infrastructure upgrades. The purpose of this TWSA background and fact sheet is to help educate the public about the challenges of aquatic invasive weed management and control and our concern about the potential impact of aquatic herbicides on Lake Tahoe s pristine drinking water and our drinking water delivery systems. In 2016, the TKPOA Integrated Weed Management Plan (IWMP) was submitted to the Lahontan Water Board. In January 2017, the Application for Exemption to the Basin Plan Prohibition on the Use of Pesticides for the Tahoe Keys West Lagoon Integrated Control Methods Test, was submitted to Lahontan staff. The proposal is to test 3 different herbicides (Triclophyr, Endothall, Penoxsulam) in 9 locations within the Keys, a total of 13.7 acres, about 8% of the Keys water area, during one season, with followup in years 2/3 by diver handpulling, bottom barriers and harvesting. Mitigations are proposed to physically separate the treatment area from Lake Tahoe. Water quality sampling mitigation is also proposed. The proposal is currently under Lahontan staff review. The document is anticipated to post to the public in late Spring 2017, at lahontan/public_notices/bp_prohibition_exemptions.shtml. Learn More To review the proposals, you can visit There will be public comment opportunity in 2017, during the Lahonatan RWQCB review process of the Application for Exemption to the Basin Plan Prohibition on the Use of Pesticides for the Tahoe Keys West Lagoon Integrated Control Methods Test. To learn about successful non-chemical methods used a Tahoe which are supported by the TWSA, visit the website of the Tahoe Resource Conservation District at For additional information, contact: Madonna Dunbar, TWSA Executive Director, at or by at mod@ivgid.org. 20

21 Wisconsin Department of Natural Resources January 2012 Penoxsulam Chemical Fact Sheet Formulations Penoxsulam was registered with the EPA for aquatic use in The active ingredient is 2- (2,2-difluoroethoxy) 6-(trifluoromethyl-N-(5,8- dimethoxy[1,2,4] triazolo[1,5,-c]pyrimidin-2-yl)) benzenesulfonamide). It is a liquid (Galleon SC ) and is used for large-scale control of submerged, emergent and floating-leaf vegetation. Aquatic Use and Considerations Penoxsulam is a systemic herbicide that moves throughout the plant tissue and prevents plants from producing a necessary enzyme, acetolactate synthase (ALS), which is not found in animals. Susceptible plants will stop growing soon after treatment and become reddish at the tips of the plant. Plant death and decomposition will occur gradually over several weeks to months. Penoxsulam should be applied to plants that are actively growing; mature plants require a higher concentration of herbicide and a longer contact time. Penoxsulam must remain in contact with plants for around 60 days. A supplemental bump treatment may be needed to maintain the herbicide concentration for the required contact time. Because of this long contact period, penoxsulam is likely to be used for larger-scale or whole-lake treatments and should not be used where rapid dilution can occur such as spot treatments or moving water. In Wisconsin penoxsulam may be used to treat the invasive Eurasian watermilfoil (Myriophyllum spicatum). In other parts of the country, it is valuable as a rotational herbicide against the invasive plant hydrilla (Hydrilla verticillata). Desirable native species that may also be affected include sago pondweed (Stuckenia pectinata), Illinois pondweed (Potamogeton illinoensis), pickerelweed (Pontederia cordata), duckweeds (Lemna spp.) and arrowhead (Sagittaria spp.). It is important to note that repeated use of herbicides with the same mode of action can lead to herbicide-resistant plants, even in aquatic plants. More resistant weeds have developed to the ALS inhibitor herbicides than to other herbicide types, and so this mechanism of action may be more susceptible to developing resistance. In order to prevent herbicide resistance, avoid using the same type of herbicides year after year, and when possible, use non-herbicide methods of control instead. The Wisconsin Department of Natural Resources provides equal opportunity in its employment, programs, services, and functions under an Affirmative Action Plan. If you have any questions, please write to Equal Opportunity Office, Department of Interior, Washington, D.C This publication is available in alternative format (large print, Braille, audio tape. etc.) upon request. Please call (608) for more information. 21

22 Page 2 Post-Treatment Water Use Restrictions There are no restrictions on swimming, eating fish from treated water bodies, or using water for drinking water. Before treated water can be used for irrigation, the concentration must be below 30 parts per billion (ppb) for turf grass or rice, and below one ppb for food crops. Herbicide Degradation, Persistence and Trace Contaminants Penoxsulam is broken down in the water by light and microbes and has a half-life (the time it takes for half of the active ingredient to degrade) ranging from about 12 to 38 days. Shallow clear-water lakes will have faster degradation than in turbid, shaded, or deep lakes. As penoxsulam breaks down, twelve degradation products are created. Six of these are more persistent in the environment than penoxsulam itself: BSTCA (half-life days), 2-amino-TCA, 5-OH-penoxsulam, SFA, sulfonamide, and 5,8-di-OH. Penoxsulam doesn t bind to sediments, so leaching through soil into groundwater is likely. Three of the more persistent degradates have been tested for mobility and are also mobile through soil. Impacts on Fish and Other Aquatic Organisms Toxicity tests conducted with rainbow trout, water fleas (Daphnia sp.), and Ramshorn snail indicate that penoxsulam is not toxic for these species. Additionally, penoxsulam is not toxic to birds, including waterfowl such as mallards. Penoxsulam does not bioaccumulate in fish or freshwater clams. Human Health Penoxsulam is not acutely toxic via skin, but may be slightly irritating if it gets in the eyes or harmful if inhaled during mixing or application. Applicators should wear chemical-resistant gloves while handling, and persons not involved Penoxsulam Chemical Fact Sheet in application should avoid the treatment area during treatment. Tests of long-term exposure to penoxsulam do not show evidence of birth defects, or genetic mutations in mammals tested. Penoxsulam may be required by EPA to undergo additional testing for endocrine disruption. Penoxsulam is classified as Suggestive Evidence of Carcinogenic Potential, which means that there is evidence it causes tumors (from one of the rodent studies conducted), however not enough information to extrapolate the risk to humans. For Additional Information Environmental Protection Agency Office of Pesticide Programs Wisconsin Department of Agriculture, Trade, and Consumer Protection Wisconsin Department of Natural Resources Wisconsin Department of Health Services National Pesticide Information Center Wisconsin Department of Natural Resources Box 7921 Madison, WI DNR PUB-WT