ATTACHMENT 2 - PWS GP Vegetative Spraying 2026-2031.pdf

PERFORMANCE WORK STATEMENT (PWS)

USACE, Gavins Point Project Chemical Vegetative Control

2026-2031

1.0 General Information.

1.1 Background. The Gavins Point Project is a U.S. Army Corps of Engineers (USACE) Multi-Purpose Federal Water Resources Development Project, located near Yankton, South Dakota on the Missouri River. Successful control of weeds, invasive plant species and other target vegetation on project lands is essential to fulfill environmental stewardship requirements, dam and infrastructure safety and integrity, along with other required missions.

1.1.1 Place of Performance. The work under this contract will take place at the Gavins Point Project. The Gavins Point Project is located approximately four (4) miles west and one (1) mile south of Yankton, South Dakota. The Gavins Point Project Office is located at 55245 Highway 121, Crofton, Nebraska 68730. All services under this contract will be performed at Gavins Point Project lands and facilities located in Yankton County, South Dakota and Cedar County, Nebraska.

1.2 Scope of Work. This is a non-personal services contract to provide vegetative control services at the Gavins Point Project. Services include chemical pesticide applications by various means by a licensed commercial pesticide applicator(s) to control weeds and other target vegetation on project lands for vegetative control within the designated work units, as specified in this contract. The Government shall not exercise any supervision or control over the contract service providers performing the services herein. Such contract service providers shall be accountable solely to the Contractor who, in turn is responsible to the Government. This is a fixed priced, performance-based service contract where the Government defines and measures desired outcomes, while contractor methods are generally not constrained or directed. The purpose of this contract is to successfully control weeds and other target vegetation on project lands in accordance with the specifications in this contract.

1.3 Period of Performance. The period of performance shall be for one (1) base period and four (4) option periods.

The Period of Performance reads as follows:

Base Period: Date of Award through 14 April 2027.

• Active Period of Performance: Date of Award through 30 October 2026.

• Inactive Period of Performance: 01 November 2026 through 14 April 2027.

Option Period 1: 15 April 2027 through 14 April 2028.

• Active Period of Performance: 15 April 2027 through 30 October 2027.

• Inactive Period of Performance: 01 November 2027 through 14 April 2028.

Option Period 2: 15 April 2028 through 14 April 2029.

• Active Period of Performance: 15 April 2028 through 30 October 2028.

• Inactive Period of Performance: 01 November 2028 through 14 April 2029.

Option Period 3: 15 April 2029 through 14 April 2030.

• Active Period of Performance: 15 April 2029 through 30 October 2029.

• Inactive Period of Performance: 01 November 2029 through 14 April 2030.

Option Period 4: 15 April 2030 through 14 April 2031.

• Active Period of Performance: 15 April 2030 through 30 October 2030.

• Inactive Period of Performance: 01 November through 14 April 2031.

*Note: The Contractor is not required to perform services during the inactive period of performance.

1.4 Contractor Personnel

1.4.1 The contractor shall perform all work under this contract using his or her own forces except as provided in Paragraph 1.4.3 Subcontracting. Employees who perform this work shall be qualified persons on the contractor’s own payroll.

1.4.2 The Contractor shall insure that all personnel be skilled in and capable of performing the work under this contract.

The Contractor shall insure all personnel are trained and have working knowledge of the specific vehicles, equipment, supplies and chemicals they will use/operate and the tasks they are to perform. All employees that perform work under this contract shall be eighteen (18) years of age or older. The Contractor shall ensure that all personnel involved with the application of chemical pesticides shall have the ability to correctly identify all target species at all growth stages and be able to successfully avoid chemical spray contact or drift with non-target species.

1.4.3 Subcontracting. The contractor shall not subcontract any work without written approval of the Contracting Officer. Compliance with the provisions of this contract by subcontractors shall be the responsibility of the contractor.

1.5 Quality Control

1.5.1 The contractor shall designate, in writing, an employee who shall serve as the contact for matters involving quality and performance or nonperformance of the required work stated in this PWS. The employee(s) shall be qualified and fully competent with full authority to act for, and on behalf of, the contractor as necessary to ensure that the required work is performed in accordance with the standards contained herein. The contractor shall furnish the above written designation to the COR no later than the first day of work. The contractor shall include the name(s), address(s), and telephone number(s) of the responsible individual(s).

1.6 Quality Assurance. The Government will use a Quality Assurance Surveillance Plan (QASP) and compliance inspections to ensure that the Contractor is performing the services required by this PWS in an acceptable manner.

The Government may use Quality Assurance Evaluators (QAE(s)) to provide assistance with the quality assurance methods.

1.6.1 The Government has the right to inspect all services called for by the contract, to the extent practicable at all times and places during the term of the contract. The Government shall perform inspections in a manner that will not delay the work.

1.6.1.1 The COR shall be permitted to obtain a sample of any chemical or chemical mixture being used in performing work under this contract, in order for chemical testing purposes, at any time or place while the Contractor or contractor personnel are located on Government property. If the Contractor is found to be using a chemical off-label, chemical not approved for use under this agreement, or chemical not mixed properly as specified by this contract or by manufacturer’s recommendations, or otherwise used in violation of laws, regulations or manufacturer’s label(s) and instruction(s), this agreement may be terminated at the discretion of the Contracting Officer.

1.6.2 If any of the services do not conform to contract requirements, the Government may require the contractor to perform the services in conformity with contract requirements and at no increase in cost. If the contract requirements are not met after a second attempt the Government may (1) require the contractor to take necessary action to ensure that future performance conforms to contract requirements and (2) reduce the contract price to reflect the reduced value of the services performed.

1.6.2.1 Upon verification of a validated customer complaint or corrective action report, the COR will notify the contractor that they are required to re-perform specific services. Services shall be re-performed by the Contractor within 24-hours notification by the COR at no additional cost to the Government.

1.6.3 The Government may take action, if the contractor fails to perform the services again or to take the necessary action to ensure future performance is in conformity with the contract requirements. The Government may (1) by contract, or otherwise, perform the services and charge to the contractor any cost incurred by the government that related to the performance of such service or (2) terminate the contract in whole or in part.

1.6.4 The Contractor is responsible to replace/repair any damage to Government property due to negligence, at his or her own cost. The Government may take action, if the contractor fails to replace/repair any damage to Government property. The Government may (1) by contract, or otherwise, replace/repair damaged government property and charge to the contractor any cost incurred by the Government to replace/repair any damage.

1.6.4.1 The Contractor shall be required to promptly notify the COR of any property damage, injury, or death that occurs as a result of the Contractor’s operations under this contract.

1.6.5 Insurance. The Contractor shall be fully insured against any potential damages or liabilities as a result of the Contractor’s operations under this contract.

1.6.6 Environmental Protection. The Contractor shall perform all work in such a manner as to minimize the pollution of air, water, or land, and shall, within reasonable limits, control noise and proper disposal of all solid waste materials and other pollutants. The Contractor shall not pollute any lands, streams, lakes, rivers, or reservoirs with fuels, oils, bitumens, calcium chloride, acids, insecticides, herbicides, or any other chemicals or harmful materials. The Contractor shall investigate and comply with all applicable federal, state and local laws and regulations regarding pollution of water and land.

1.6.6.1 Spillage. Special measures and considerations shall be taken at all times by the Contractor to prevent pesticides and other chemicals from entering public waters, that are not intended for or rated to be safe for aquatic applications as determined by the pesticide label and manufacturer’s recommendations. If any spillage of pesticide, chemical or other potentially harmful substance shall occur as the result of the Contractor’s operations, the Contractor shall be responsible for proper removal and disposal of the material and restore the area to the original condition prior to the spill. In case of spillage, the Contractor shall be required to remove or excavate the affected ground and soil, and replace with suitable fill material and restore the area to the original condition prior to the spill.

1.6.6.1.1 Notification in event of Chemical Spill(s). The Contractor shall immediately notify the COR on the day of occurrence/observation of any chemical, hazardous material, or potentially damaging material spillage. In the event of a spill the Contractor shall immediately control the spill situation (prevent further spillage), contain the spill, and remove/clean the affected area as a result of the spill to the condition prior to the spill occurring.

1.6.6.2 Proper Disposal. Proper disposal of all materials, including chemicals/pesticides and chemical/pesticide containers, shall be the responsibility of the Contractor. The Government will not provide for disposal of contractor-furnished supplies and equipment, including chemicals, pesticides and other related materials. Disposal of any materials, including chemicals and pesticides shall be in compliance with all applicable Federal, State, and Local laws and regulations. Chemicals, pesticides, containers and related equipment and supplies shall not be disposed of on Government property, or in Government-provided dumpsters within project facilities and grounds.

1.6.6.2.1 Disposal of any materials, wastes, effluent, trash, chemicals, pesticides, oils, grease, or other foreign material(s) in areas adjacent to lakes, streams, rivers and other bodies of water is not permitted. If improper disposal by the Contractor occurs, the Contractor shall be responsible for proper removal of the material and restoration of the area, including affected soils, landform or waterways, to the condition prior to the spill/improper disposal. In case of improper disposal, the Contractor shall be required to remove or excavate the affected ground and soil, and replace with suitable fill material and restore the area to the original condition prior to the improper disposal.

1.6.6.3 Protection of Non-Target Species. The Contractor shall not damage, deface, injure, kill, or destroy any non-target plant or animal species as a result of the Contractor’s operations. The Contractor is not permitted to perform any activities or operations at any time that would adversely affect any threatened or endangered species.

1.6.6.4 Protection of Fish and Wildlife. The Contractor shall at all times perform work and take necessary precautions to minimize disturbance or interference to fish and wildlife species. The Contractor shall not be permitted to alter water flows, or otherwise disturb, destroy or deface any native habitat that are critical to fish and wildlife.

1.6.6.5 Preventing Spread of Weeds/Invasive Species. In order to prevent the spread of weeds and invasive plant species on project lands, the Contractor shall be required to clean all equipment prior to entering Government property. The Contractor’s equipment and supplies shall have no visible soil, roots, seeds, vegetative material or any other material that could contain any seeds prior to entering Government property.

1.7 Hours of Operation. The Contractor is responsible for conducting business between the hours of 7:00 A.M. and sunset Monday thru Thursday, and between the hours of 7:00 A.M. and 2:00 P.M. on Friday, except Federal holidays or when the Government facility is closed due to local or national emergencies, administrative closings, or similar Government directed facility closings. The Contractor may conduct business outside regular business hours with prior authorization from the COR. The Contractor must maintain an adequate workforce for the uninterrupted performance of all tasks defined within this PWS when the Government facility is not closed for the above reasons.

When hiring personnel, the Contractor shall keep in mind that the stability and continuity of the workforce are essential.

1.8 Pre-Work Meeting. Prior to commencing any activities, the contractor shall arrange a Pre-work Meeting with the COR. The Meeting shall discuss the work requirements, scheduling, submittal process, review of the Activity Hazard Analysis (AHA), and Abbreviated Accident Prevention Plan (AAP). At least one (1) week prior to commencing work, the Contractor shall coordinate their proposed work schedule with the COR.

1.9. Submittals. Prior to commencement of services, the Contractor shall submit the following documents to the COR for review and approval:

a. Activity Hazard Analysis (AHA)

b. Abbreviated Accident Prevention Plan (APP)

c. List of who will perform work on this contract and photocopies of all Pesticide Applicator Licenses.

d. Proof of Insurance for Contractors and Subcontractors.

e. Contact information for the Contractor or responsible person in order to discuss contractual matters during regular business hours.

1.10 Standards and Regulations. The Contractor shall perform to the standards in the contract and comply with all Local, State, and Federal Regulations during the services performed. The Contractor is responsible for ascertaining the extent to which these regulations affect the operations resulting from this contract. The Contractor shall comply will all applicable regulations. Applicable regulations include, but are not limited to the following:

a. Code of Federal Regulations (CFR), Title 36, Chapter III, Part 327, Rules and Regulations Governing Public Use on Corps of Engineers Water Resource Development Projects EP 1165-2-316 (http://www.publications.usace.army.mil/Portals/76/Publications/EngineerPamphlets/EP_1165-2- 316.pdf?ver=2013-08-22-104526-670)

b. Engineering Manual (EM) 385-1-1 (USACE – Safety and Health Requirements Manual), dated November 2014; http://www.publications.usace.army.mil/Portals/76/Publications/EngineerManuals/EM_385-1-1.pdf

c. Occupational Safety and Health Standards (29 CFR 1910);

d. The Contractor shall comply with all pesticide application laws and regulations, including but not limited to all Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) provisions, National Pollutant Discharge Elimination System (NPDES) regulations, chemical label guidelines and all manufacturer’s recommendations.

1.10.1 Activity Hazard Analysis (AHA). The contractor shall prepare the AHA in accordance with Paragraph 01.A.14 or 01.A.15 of the EM 385-1-1. If using Paragraph 01.A.15, prepare the AHA IAW Figure 1-2.

http://www.publications.usace.army.mil/Portals/76/Publications/EngineerPamphlets/EP_1165-2-316.pdf?ver=2013-08-22-104526-670 http://www.publications.usace.army.mil/Portals/76/Publications/EngineerPamphlets/EP_1165-2-316.pdf?ver=2013-08-22-104526-670 http://www.publications.usace.army.mil/Portals/76/Publications/EngineerManuals/EM_385-1-1.pdf

Note: Contractors and other individual employer’s typically use Job Safety Analyses (JSAs), Job Hazard Analyses (JHAs), or similar Risk Management assessment tools. The government considers equivalent to, and acceptable substitutes for, the USACE’s AHA provided the data collected is the same as that required by the AHA, commensurate with the type of services the contractor is performing.

1.10.2 Abbreviated Accident Prevention Plan (APP). EM 385-1-1 in its entirety may be too complex for the type of work performed under these contracts; contractors may reference Appendix A, for abbreviated Accident Prevention Plan (APP). The contractor shall only need to submit items in Appendix A that are pertinent to the contract. The contractor shall use a qualified person to prepare the site-specific abbreviated Accident Prevention Plan (APP). The contractor shall prepare the APP in accordance with the format and requirements of the EM 385-1-1 and supplemented herein. The contractor shall sign and submit the APP for approval prior to the start of work onsite.

1.11 Physical Security

1.11.1 The contractor shall be responsible for safeguarding all government facilities, property, and materials provided for contractor use. The contractor shall secure at all times all government facilities, property, and materials. Specific security conditions may change based on threats to national defense and based on the risk of specific facilities to these threats. The contractor shall abide by these changing conditions at all times, as applicable.

1.11.2 Key Control. The contractor shall ensure all keys issued by the government are not lost, stolen, duplicated, or used by unauthorized persons.

1.12 Antiterrorism/Operation Security Requirements

1.12.1 Access and General Protection/Security Policy and Procedures. All contractor and all associated sub-contractors’ employees shall comply with applicable installation, facility and area commander installation/facility access and local security policies and procedures (provided by government representative). The contractor shall also provide all information required for background checks to meet installation/facility access requirements to be accomplished by installation Provost Marshal Office, Director of Emergency Services, or Security Office.

Contractor workforce must comply with all personal identity verification requirements (FAR clause 52.204-9, Personal Identity Verification of Contractor Personnel) as directed by DOD, HQDA and/or local policy. In addition to the changes otherwise authorized by the changes clause of this contract, should the Force Protection Condition (FPCON) at any installation or facility change, the Government may require changes in contractor security matters or processes.

1.13 Payment

1.13.1 The Government will make payment monthly, after the Government has inspected and accepted the services, and the Government has reviewed, approved, and processed the Contractor’s invoice. The Contractor shall submit the invoice to the COR and/or other Government representative that has been designated to receive the invoice.

1.13.2 The contractor must provide the contractor’s name, address, contract number, period of services completed (i.e., for the month of January or for the period of performance of January 1 through February 23), CLIN number and specific quantities of work performed (i.e., 1 Month, 40 days, 100 acres, etc.), and total requested, for an invoice to be considered proper. The contractor shall submit the invoice by the first (1st) of the month for services completed the previous month or submit the invoice upon completion of all services, in accordance with the period of performance stated in the CLIN.

2.0 Definitions. The following definitions and descriptions apply wherever the word(s) or phrase(s) is/are stated in this PWS:

Acceptable Level of Performance (ALP): The maximum percent defective, the maximum number of defects per hundred units, or the number of defects in a lot considered satisfactory on the average. The allowable leeway or variance from a standard before the government will reject the specific service.

http://www.ecfr.gov/cgi-bin/text-idx?rgn=div8&node=48:2.0.1.1.1.2.1.28 http://www.ecfr.gov/cgi-bin/text-idx?rgn=div8&node=48:2.0.1.1.1.2.1.28

Contracting Officer’s Representative (COR): means an individual designated an authorized in writing by the Contracting Officer to perform specific technical or administrative functions.

Performance-Based Contract (FAR 2.101): Structuring all aspects of an acquisition around the purpose of the work to be performed with the contract requirements set forth in clear, specific, and objective terms with measurable outcomes as opposed to either the manner by which the work is to be performed or broad and imprecise.

Performance Requirements Summary (PRS): The PRS shows contract requirements, the component requirements related to each contract requirement, the price of each work requirement as a percentage of the associated contract requirement (Fixed Price Contracts), the standard of performance, and the acceptable level of performance (ALP) for each work requirement.

Quality Assurance Surveillance Plan (QASP): An organized written document used by the Government for quality assurance surveillance. Document contains sampling/evaluation guides, checklists, and the performance requirements summary (PRS).

3.0 Government Furnished Items and Services

3.1 General. The Government will not furnish any items for the performance of this contract, including but not limited to any supplies, equipment, labor, facilities, utilities, services, or storage.

4.0 Contractor Furnished Items and Responsibilities

4.1 General. The Contractor shall furnish all items for successful performance of this contract to include but not limited to all supplies, equipment, labor, facilities, and services required that are not listed under Section 3 of this

PWS.

4.2 Supplies. The Contractor shall provide all supplies, including but not limited to approved chemical pesticides/herbicides, water (for mixing chemical pesticides/herbicides), surfactant, and dye (when applicable to application) required to perform work under this contract. The Contractor shall provide for a minimum of four (4) signs a minimum of 8” by 8” in weather-resistant/rain resistant material with “Area Closed/Caution/Keep Out – Pesticides Applied in this area”, or similar words in minimum 1.5” high lettering, when applying chemical pesticides in the swim beach area, the Contractor shall place these signs and remove as indicated in section 5.3.18.

4.3 Equipment. The Contractor shall provide all equipment including but not limited to properly calibrated chemical sprayers and other pesticide/herbicide application-related equipment, and proper storage containers for chemical pesticides/herbicides. The Contractor shall provide a mode of transportation to the work units for Contractor personnel and for transportation of chemical pesticides/herbicides and other supplies/equipment in a safe and responsible manner. This may include but is not limited to a highway-licensed motor vehicle, all-terrain vehicle (ATV), etc. for transportation to the work units and within the work units. Some areas may not be accessible by a regular highway-licensed vehicle and may require use of an ATV or hand-spraying application equipment. All motor vehicles used under this contract shall be properly licensed and insured to meet all Federal, State, and local laws and regulations.

4.4 Commercial Pesticide Applicator License. All personnel involved with the application of chemical pesticides/herbicides shall possess and maintain a valid state-issued Commercial Applicator License with the appropriate pesticide certification classification(s) during the period(s) of performance of this contract. A photocopy of each valid Commercial Pesticide Applicator’s license shall be provided to the COR and kept on file at the project office for the Contractor and/or any personnel that will apply chemical pesticides/herbicides on Government property under this contract.

4.5 Storage. The Contractor shall be responsible for his or her own storage needs off project lands for equipment, supplies and material storage. No Contractor-furnished chemicals, equipment, vehicles or any other materials or supplies may be stored by the contractor on Government property during non-business hours. The Contractor is responsible for all Contractor-furnished items, the Government cannot be held responsible for damage, vandalism, or theft of any Contractor-furnished items.

5.0 Specific Tasks

5.1 Basic Services. The Contractor shall provide services for successful vegetative control for all target vegetation without damaging and/or killing nearby trees, shrubs, and any other non-target ground vegetation within the designated work units. Services may require spot treatments and/or solid coverage for complete vegetative control.

Application rates and mixtures shall be such that the target species is killed, and simply not injured/burnt. Work areas are identified by aerial photos and maps, see Technical Exhibit 5. The designated work units shall be successfully treated with chemical control in accordance with all contract specifications.

5.2 Chemical Pesticides/Herbicides and Target Vegetation. The Contractor is authorized to only apply U.S.

Environmental Protection Agency (EPA)-registered chemical pesticides/herbicides approved for use in the States of South Dakota and Nebraska, and those that are listed within this PWS. The use and/or application of any chemical pesticide/herbicide classified by the EPA as “restricted-use” is not authorized under this contract. The Contractor shall insure that all chemicals shall be mixed and applied at rates consistent with chemical labels and manufacturer’s recommendations and in compliance with all Federal, State, and local laws and regulations. It shall be the responsibility of the Contractor to correctly identify all plant species present, including any noxious weeds, invasive species and other target vegetation within the designated work units. The Contractor shall be responsible to determine the chemical pesticide/herbicide and correct mixture to successfully control all target-vegetation, from the list of approved chemical pesticides in this PWS, and not kill, injure or harm non-target vegetation or other species.

5.2.1 Aquatic Chemical Pesticide/Herbicide Applications. The Contractor is required to apply chemical pesticides/herbicides in aquatic areas in and along rivers, streams, lakes, ponds, relief wells, and other waterbodies under this contract. Any application within ten feet of aforementioned areas shall use only aquatic formulations of imazapyr (Habitat® or equivalent) and aquatic formulations of glyphosate (Rodeo® or equivalent) are authorized to be applied in any aquatic areas or aquatic-sensitive areas within the designated work units. No non-aquatic formulations of any chemical pesticides/herbicides are authorized to be discharged or applied into or onto any waterbody. The Contractor shall also prevent any chemical drift of non-aquatic formulations of chemical pesticides/herbicides into or onto any waterbody.

5.2.2 List of Authorized Chemical Pesticides/Herbicides. The following list identifies all chemical pesticides/herbicides that are authorized for use by the Contractor under this contract, in respect to all label requirements, manufacturer’s recommendations, and all applicable Federal, State, and local laws and regulations:

5.2.2.1 Aminocyclopyrachlor (Perspective® OR equivalent). The main target is to treat areas for preemergent vegetative growth for total herbaceous vegetation control bare-ground treatments. Typically, these applications will be made in the early growing season in spring or early summer.

5.2.2.2 Aminopyralid (Milestone® OR equivalent). The main target species will include Canada thistle, musk thistle, spiny plumeless thistle, and other noxious weeds. Typically, spot spraying will occur and will be variable depending on seasonal conditions.

5.2.2.3 Aquatic Formulation of Imazapyr (Habitat® OR equivalent). This is for use in aquatic/wetland areas, relief wells, and riprap areas. The main target species include Canada thistle, purple loosestrife, common reed, and saltcedar.

5.2.2.4 Glyphosate (RoundUp Pro®, OR equivalent). The target is total herbaceous vegetation control within operations and recreational areas. These areas will need a combination of total coverage and spot spray treatment applications.

5.2.2.5 Aquatic Formulation of Glyphosate (Rodeo® OR equivalent). The main target is to assist with total herbaceous vegetation control in aquatic/wetland areas, relief wells, and riprap areas.

5.2.2.6 Metsulfuron (Escort® OR equivalent). The target species is broadleaf weeds.

5.2.2.7 Sulfometuron (Oust® OR equivalent). This is typically used for total vegetative control for bare-ground treatments.

5.2.2.8 Imazapyr Diuron (Sahara DG® OR equivalent). This is typically used for total vegetative control for bare-ground treatments.

5.2.2.9 Pendimethalin (Pendulum® OR equivalent). This is typically used to target annual grasses and some broadleaf weeds.

5.2.2.10 2,4-D (Trimec® OR equivalent). This is typically used for broadleaf control.

5.2.2.11 Diothpyr (Dimension® OR equivalent). The target species is crabgrass and other turf/lawn weeds.

5.2.2.12 Chlorantraniliprole (Acelepryne® OR equivalent). The target species are grubs and other lawn pests.

5.2.2.13 Imazapic (Plateau® OR equivalent). The main target species is leafy spurge.

5.2.2.14 Substitution of Authorized Chemical Pesticides/Herbicides. Chemical pesticides that not listed under this contract within Section 5.2 may be used only upon written authorization in advance by the COR. Any chemical pesticide used in place of an approved chemical pesticide listed as authorized under this agreement shall be required to be EPA-registered and approved for use in South Dakota and Nebraska and not be classified by the EPA as “restricted-use”. No change in price to the Government shall occur as a result of the Contractor applying an approved alternative pesticide/herbicide.

5.3 Work Units and Area Descriptions. The following are descriptions of the work unit areas and required work within each unit. See Technical Exhibit 5 for aerial photos/maps of the unit area boundaries. Exact size of areas are approximate and areas near waterbodies may vary due to water level fluctuations.

5.3.1 Unit 1 – Boat Yard. This area includes treatment of all grounds and the boundary fence line. This area will require total herbaceous control, bare-ground treatment, and spot-spray applications on cracks and joints. All gravel areas and ground underneath the fence line will require solid coverage, and spot treatment of all joints and cracks shall be applied. Treatment under the fence line shall be total herbaceous control. This area is approximately 1.3 +/-acres. Typically, this area is treated in entirety 2-3 times per year.

5.3.2 Unit 2 – Maintenance Yard. This area includes treatment of all grounds and the boundary fence line. This area also includes the Volunteer Village camping pads, and the roadway to Volunteer village, along with treatment of the tree nursery boundary fence. The boundary fences shall be treated so that no vegetation shall be growing and touching the fence line. This area will require total solid herbaceous control. This may also require additional spot-spray applications throughout the period of performance. Turf areas shall not be treated with chemical pesticides.

This area is approximately 5.5 acres +/-. Typically, this area is treated in entirety 2-3 times per year.

5.3.3 Unit 3 – Rock Storage Piles. This area includes treatment of all grounds and will require total solid herbaceous control between the turf/grass areas, including all stockpiles within the designated unit area. This may also require additional spot-spray applications throughout the period of performance. This area is approximately 3.1 acres +/-. Typically, this area is treated in entirety 2-3 times per year.

5.3.4 Unit 4 – Lewis and Clark Lake Shoreline/Dam Face. This area includes treatment of the entire shoreline area from the dam spillway to the north boat yard fence, from water’s edge to the top/base of the riprap. This area requires total solid herbaceous and vegetative control within the designated area. This may also require additional spot-spray applications throughout the period of performance. This area is approximately 9.9 acres +/-. Typically, this area is treated in entirety 3-4 times per year.

5.3.5 Unit 5 –Campgrounds. This area includes all camping pads, and the lift station enclosure to include the fence line and the grounds inside in Cottonwood Campground and 6 camp pads in Nebraska Tailwaters Campground.

Total herbaceous control shall be required within each camp pad within the turf area and the campground roadway and the lift station area. There is a total of 83 impact pads. This includes any vegetation present in holes, cracks, joints, or spaces of the camp pads. Camp pads average in size of 20’x20’. This may also require additional spot-spray applications throughout the period of performance. Typically, this area is treated in entirety 2-3 times per year.

5.3.6 Unit 6 – North Bank of Missouri River. This includes the entire shoreline and riprap along north bank of Missouri River. From the Fishing Wall area to 200 feet east of the outlet of Lake Yankton (commonly referred to as “The Bubble” area), from the water’s edge to the top/base of the riprap to the mowed turf area. This area includes the boat ramp and treatment of all joints and cracks that may be present. This area includes underneath the guard rails at the boat ramp turn-around and the guard rail between the boat ramp and Chief White Crane Campground, and the fishing pier area around the outlet of Lake Yankton. This area requires total herbaceous control within the designated unit area. This may also require additional spot-spray applications throughout the period of performance.

This area is approximately 9.9 acres +/- in size. Typically, this area is treated in entirety 2-4 times per year.

5.3.7 Unit 7 – Training Dike accessible fishing pier. This includes the rock shoreline riprap from the sidewalk/trail from the south to the water’s edge on the north side of the jetty. This area requires total herbaceous control within the designated unit area and spot application in all joints and cracks of the sidewalk/cement area. This may also require additional spot-spray applications throughout the period of performance. This area is approximately 3,500 square feet +/-. Typically, this area is treated in entirety 2-3 times per year.

5.3.8 Unit 8 – Fishing Jetty north of Cottonwood Day Use Area. This includes the rock shoreline riprap from the trail from the west to the water’s edge on the east side of the jetty. This area requires total herbaceous control within the designated unit area. This area is approximately 3,200 square feet +/-. Typically, this area is treated in entirety 2- 3 times per year.

5.3.9 Unit 9 – Cottonwood Day Use Area fishing jetty. This includes the rock shoreline riprap from the trail from the west to the water’s edge on the east side of the jetty. This area requires total herbaceous control within the designated unit area, and spot treatment in all joints and cracks in the cement area of the jetty. This may also require additional spot-spray applications throughout the period of performance. This area is approximately 3,000 square feet +/-. Typically, this area is treated in entirety 2-3 times per year.

5.3.10 Unit 10 – Powerhouse Slope. This area includes all riprap placed from Powerhouse Road to the turf located near the switchyard, from the intersection of Crest Rd./Powerhouse Rd. to the Powerhouse entrance gate. This area requires total herbaceous control within the designated unit area and may require spot treatment between the riprap.

This may also require additional spot-spray applications throughout the period of performance. This area is approximately 1.2 acres +/- in size. Typically, this area is treated in entirety 3-4 times per year.

5.3.11 Unit 11 – Powerhouse, Switchyard, Transformer Yard, and Fenced Area. This area includes the entire fence line around the Powerhouse, Switchyard and Transformer Yard, the cement slope between the switchyard and the Powerhouse, the parking area and grounds within the fenced area, the spillway deck from end to end, and the entire grounds within the switchyard and transformer yard. This area also includes the visitor parking area, sidewalks on north and south side of the parking areas, and the fence line between Powerhouse Rd. and the tailrace.

This area requires total herbaceous control within the designated unit area. This may also require additional spot-spray applications throughout the period of performance. This area is approximately 1.3 acres +/- of spot spray application in cement/asphalt areas, and approximately 3.25 acres +/- of solid chemical coverage. Typically, this area is treated in entirety 3-4 times per year.

5.3.12 Unit 12 – Radio Tower/Weather Station Area. This area includes the radio tower & weather station fence line and the entire grounds within the fenced enclosure. This area requires total herbaceous control within the designated unit area. This area is approximately 2,000 square feet +/-. Typically, this area is treated in entirety 2-3 times per year.

5.3.13 Unit 13 – Nebraska Tailwaters – West. This area includes the entire shoreline from Nebraska Tailwaters Campground from 350 linear feet west of the handicap fishing pier to campground entrance gate. This area is from the top of the curb of the roadway to the water’s edge. This area requires total herbaceous control within the designated unit area. This includes the boat ramp and all joints and cracks present. Turf areas shall not be treated.

This may also require additional spot-spray applications throughout the period of performance. This area is approximately 2.5 acres +/- in size. Typically, this area is treated in entirety 3-4 times per year.

5.3.14 Unit 14 – Nebraska Tailwaters – East. This area includes the shoreline from the campground entrance gate to east boundary of campground. This area is from the guard rail to the water’s edge. This area requires total herbaceous control within the designated unit area. Turf areas shall not be treated. This may also require additional spot-spray applications throughout the period of performance. This area is approximately 1.6 acres +/-. Typically, this area is treated in entirety 3-4 times per year.

5.3.15 Unit 15 – Sewage Lagoons. This area includes chemical control from water’s edge to water’s edge along the sides of both holding ponds. This area requires total herbaceous control within the designated unit area. This area will require application of approximately 1 acre. Vegetation typically only grows along the edges of the ponds and inward approximately 3-4 feet from the water’s edge. No living vegetation shall be present within the designated area upon completion of spraying application. This unit requires use of the aquatic formulation of imazapyr (Habitat® or equivalent) and/or the aquatic formulation of glyphosate (Rodeo® or equivalent) only. Typically, this area is treated in entirety 2-3 times per year.

5.3.16 Unit 16 – Relief Well Outfalls. This area includes chemical control of the rock outfall structures along the west side of Lake Yankton. This area requires total herbaceous control within the designated unit area. This area is approximately 13,000 sq. ft. +/-. This may also require additional spot-spray applications throughout the period of performance. Typically, this area is treated in entirety 2-4 times per year.

5.3.17 Unit 17 – Nebraska Tailwaters Fish Cleaning Station/Dump Station/Entrance Sign. This area includes the gravel/rock areas from the dump station to the turf area on the east side of Highway 121. This area also includes the rock area around the “Gavins Point Dam/Lewis and Clark Lake” entrance sign between the turf area. This area will require total herbaceous control and solid coverage. This may also require additional spot-spray applications throughout the period of performance. This area is approximately 6,000 sq. ft. +/-. Typically, this area is treated in entirety 2-3 times per year.

5.3.18 Unit 18 – Lake Yankton Swim Beach. This area includes the entire area from the beach parking area to the water’s edge between all turf areas. This area shall require solid coverage and total herbaceous control, so that only the sand ground surface shall remain. This area is approximately 1.25 acres +/-. Applications in this area shall be coordinated in advance with the COR to ensure applications minimize effects to public visitors and access. The Contractor is required to sign the area for the public during all pesticide applications and continue to have the area signed a minimum of 24-hours or as required on the chemical label and manufacturer’s recommendations, see section 4.2 Materials. This may also require additional spot-spray applications throughout the period of performance. Typically, this area is treated in entirety 2-3 times per year.

5.3.19 Unit 19 – Dam Embankment. This area includes the west and east turf/grass slopes of the dam from the top of the Crest Road to the bottom of each slope to the roadways. The goal is total weed control, so that only the grass turf on the slope embankment shall remain. The grass turf shall not be burnt, injured, or killed. Crabgrass, thistle, woody vegetation, and leafy spurge are included as the target vegetation. Control within this area and have the slope turf/grass remain unharmed. This area is approximately 45 acres +/-. Typically, this area is treated in entirety once per year.

5.3.20 Unit 20 – Roadway, Sidewalk, Trail, parking areas. This unit will include all USACE-managed roadways and parking areas (with the exception of Highway 121 and the Administration/Visitor Center area compound).

These areas include the Crest Road (the road that crosses Gavins Point Dam from South Dakota Highway 52 to Nebraska State Highway 121), Powerhouse Road (From Crest Road to Powerhouse gate), Training Dike Day Use Area roadways and parking areas, Ramp Road (from Crest Road to Toe Road), Cottonwood Day Use Area roadway and parking areas, Toe Road (From Pierson Ranch Campground to Chief White Crane Campground), Cottonwood Campground roadways, Nebraska Tailwaters Campground roadways and parking areas, Group Camp Area parking area, Overlook/Trailhead roadway and parking area. The requirements for this section are total vegetation control within all joints and cracks present on USACE-managed roadways and trails. Typically, this area is treated in entirety 2-3 times per year.

5.3.21 Unit 21 – Miscellaneous Invasive Species Control. This unit will include Units 1-20 of this Performance Work Statement. The contractor shall chemically treat any and all emerging invasive and noxious plant species on USACE project lands defined in the units above. Targeted invasive and noxious plant species are (not limited to) as follows: Canada Thistle, Musk Thistle, spiny plume less thistle, Perennial Sow Thistle, Leafy Spurge, Purple Loosestrife, and Salt Cedar. It is the responsibility of the contractor to correctly identify all targeted invasive and noxious plant species, and to know which chemical(s)/herbicide(s) to use. The contractor shall use proper herbicide(s) for the targeted vegetation. Contractor shall be responsible for applying aquatic herbicide(s) where required by local, state, and federal laws. Typically, chemical control of invasive and noxious plant species on project lands will need to be treated 2-3 times per year.

5.4 Weather & Environmental Conditions. It is the responsibility of the Contractor to read and understand all manufacturer’s labels and warnings relative to temperature, wind, or other weather/environmental conditions and only apply chemical pesticides when conditions are favorable. The Contractor shall be responsible for controlling any chemical drift from wind or other weather-related causes and be responsible for any non-target vegetation damaged while providing services under this contract.

5.5 Chemical Vegetation Control Services. The Contractor shall insure total vegetative control within each work unit throughout the period of performance by means of either a total vegetative bare-ground control method or spot treatment of the individual plants.

5.5.1 Application of Chemical Pesticide/Herbicide Vegetation Control. The Contractor shall commence with any chemical vegetative control required within five (5) business days following the COR’s notice. This application shall be accomplished by either a total vegetative bare-ground control method or spot treatment of the individual plants. The Contractor shall complete all services within five (5) business days from the start date of the application.

The goal of this requirement is to provide a complete vegetation control service as indicated in each section (typical total-vegetation control from previous years under each unit description, see paragraphs 5.3.1 through 5.3.20), and follow-up with additional spot-spraying treatments to control target vegetation throughout the period of performance. It shall be determined by the contractor when the means of a chemical pesticide/herbicide application shall be total coverage or a spot-spray treatment to control the target vegetation.

5.5.2.1 The Contractor shall notify the COR on the day of occurrence if a service cannot be completed within the timeframe specified in paragraph 5.5.1 as a result of any unfavorable weather conditions and/or similar environmental-related conditions that would not allow for a successful chemical pesticide/herbicide application. The Contractor shall begin the services on the next business day that conditions are deemed acceptable to apply chemical pesticides/herbicides in accordance with label specifications and manufacturer’s recommendations.

5.5.2.2 Upon completion of each chemical vegetative control application, within each work unit, the Contractor shall notify the COR for inspection. The COR will inspect the work units within fourteen (14) days following the application in order to survey the area for proper vegetation control. The Contractor shall be required to successfully control a minimum of 95% of all target vegetation following each application. If a 95% control rate is not achieved following the application, the Contractor shall have three (3) business days from the COR’s inspection to reapply chemical vegetation control to meet the minimum control standards at no additional cost to the Government.

5.6 Pesticide Application Documentation and Recordkeeping Requirements. The Contractor shall be required to submit the following documentation to the COR:

5.6.1 Pesticide Application Records. A Pesticide Application Record (PAR) must be completed daily, on-site for each chemical pesticide/herbicide application. The Contractor shall be required to submit a complete and accurate PAR to the COR within ten (10) days following the application and prior to submitting the monthly invoice for payment. See Technical Exhibit 3, for the Pesticide Application Record (PAR) form.

6.0 Performance Requirements Summary. The contractor service requirements are summarized into performance objectives that relate directly to mission essential items. The performance threshold briefly describes the minimum acceptable levels of service required for each requirement. These thresholds are critical to mission success.

Performance Objective Standard Performance Threshold Method of Surveillance

PRS # 1.

The Contractor shall provide chemical control services for target vegetation described in this contract.

The Contractor must provide these services to the performance and safety standards outlined in this PWS, specifically Section 5.

The Contractor shall successfully control a minimum of 95% of the target species within each designated work area, per treatment, without damage to non-target species.

75% Inspection.

PRS # 2.

The Contractor shall provide a complete and correct Pesticide Application Record (PAR) upon completion of each chemical application.

The Contractor must fully complete all required pesticide application documentation and submit to the COR in accordance with the PWS, within ten (10) days following the application, and prior to submittal of invoice for payment.

Zero Deviation from Standard.

100% Inspection

7.0 Attachments.

7.1 Technical Exhibit 1 – Estimated Workload / Labor Hours

7.2 Technical Exhibit 2 – Pesticide Application Record (PAR)

7.3 Technical Exhibit 3 – Service Contract Inspection Form

7.4 Technical Exhibit 4 – Work Unit Maps

TECHNICAL EXHIBIT 1

ESTIMATED WORKLOAD / LABOR HOURS

CHEMICAL VEGETATIVE CONTROL SERVICES

AT GAVINS POINT PROJECT

**The prospective bidder shall note that this is an estimate based on previous chemical weed control services at the Gavins Point Project. This chart is only intended as a general guide for the size and general average time it will take to successfully provide chemical weed control services within each unit and potentially assist in the bidding process and for planning purposes. The estimated hours are based on two (2) experienced licensed chemical applicators operating an ATV and/or vehicle mount-type properly calibrated chemical sprayer and does not include time such as pre-mixture of chemical or travel time to unit.