Attachment Eight - 1503020 J Pest Control.docx

Section J 1503020 Pest Control Section J – 1503020 Pest Control

Attachment J-1503020-01 Definitions and Acronyms

Certified Applicator/ Operator An individual who has completed an EPA <<Note to Spec Writer: EPA not required OCONUS>> approved training program that includes written examinations in core and specific application categories and is certified by the state, or host nation in which they are applying pesticides to do so without supervision.

Attachment J-1503020-02 New Pesticide Request

Attachment J-1503020-03 References and Technical Documents

The Contractor shall adhere to the applicable portions of the current edition of the following publications and directives in performing the services required under this contract:

· Department of Defense Directive 4150.07, Department of Defense Pest Management Program

· Executive Order 12088, Prevention, Control, and Abatement of Environmental Pollution at Federal Installations

· OPNAV Instruction 6250.4C, Navy Pest Management Programs

· OPNAVINST 5090.1, Environmental Readiness Program Manual, Chapter 24: Pesticide Compliance Ashore

· 42 U.S.C. 4321 et seq., National Environmental Policy Act (NEPA)

· 7 U.S.C. 136 et seq., Federal Insecticide, Fungicide and Rodenticide Act (FIFRA) as amended

· 16 U.S.C. 1531 et seq., Endangered Species Act

· 42 U.S.C. 6901 et seq., Resource Conservation and Recovery Act (RCRA)

Attachment J-1503020-04 Service Level Standards

The table below applies to all facilities/spaces listed in the Frequencies for Scheduled Work provided in J-1503010-06.The Contractor shall price work requirements as detailed per COL Base or Additional Measures Level in the corresponding ELIN listed in J-0200000-09.

Structure Damaging and Disease Vector or Health Pests – Routine surveillance and treatment is conducted in accordance with the IPMP.

Lawn Turf and Ornamental Plant Pests – No surveillance in any grounds areas and treatment in prestige areas is conducted in response to customer complaints only. No treatment in improved grounds areas.

Nuisance Pests2 – Routine surveillance and treatment conducted in accordance with the IPMP is limited to Child and Youth Program facilities, food handling and dining facilities, and administrative areas. No surveillance in operational areas. Treatment of operational areas is conducted in response to customer complaints only.

Vegetation control – Routine maintenance performed only for fencelines, fire breaks, and roadway clearances. Vegetation control as necessary to prevent damage to paved surfaces shall be ordered as IDIQ work.

Structure Damaging and Disease Vector or Health Pests – Routine surveillance and treatment is conducted in accordance with the IPMP.

Lawn Turf and Ornamental Plant Pests – No surveillance or treatment in prestige and improved grounds areas.

Nuisance Pests2 - Routine surveillance and treatment conducted in accordance with the IPMP is limited to Child and Youth Program facilities, food handling and dining facilities only. No routine surveillance in operational and administrative areas. Treatment of operational and administrative areas is conducted in response to customer complaints only.

Vegetation control – Routine maintenance performed only for fencelines, fire breaks, and roadway clearances. Vegetation control as necessary to prevent damage to paved surfaces shall be ordered as IDIQ work.

Note 1: Mission impact pests are indicated on the Frequencies for Scheduled Work provided in J-1503010-06.

Note 2: All Vertebrate pests are treated as Nuisance Pests unless otherwise specified.

ATTACHMENT J-1503020-05

GUIDANCE FOR CONTRACTOR’S WORK PLAN (CWP)

The CWP shall adhere to applicable publications and directives contained in J-1503020-03 (References and Technical Documents. The CWP will require approval by the Contracting Officer (KO). The CWP shall establish the strategy and methods for conducting a safe, effective, and environmentally sound pest management program in compliance with these specifications. Prospective contractors may review the installation’s historical records of pest activity and abatement actions, survey facilities and grounds, and consult with the Installation IPMC in development of a plan. The CWP shall address continuous monitoring, pest response and removal procedures, record keeping, warranties, education and communication to installation personnel to prevent pests and disease vectors, bird control on applicable airfields and in hangars, etc. The IPM approach should use targeted (i.e., effective, environmentally sound) methods including habitat/facility modification, biological/genetic/cultural control, mechanical/physical control, and where necessary, the judicious use of least hazardous pesticides. The CWP shall include labels, SDS sheets, and Planned Pesticide Use Sheets and comply with all applicable local, state, and Federal regulations, and the IPMP.

Attachment J-1503020-06 Frequencies for Scheduled Work

The following buildings will be surveyed on the specified frequencies and treated as indicated on the pest group sheets:

Frequency

Child Day Care Center (Food Prep Area/Kitchen, Storage

Attachment J-1503020-07 Nuisance Pest Requirements

Performance Standards

See Below

-Cockroaches: 4 or more adults or nymphs or 1 egg capsule per room -Ants: 4 or more -Centipedes/Spiders: 1 or more -Other Arthropods: 3 or more 1, 2, 3, 4

4 or more adults or nymphs or 1 egg capsule per room 1, 2, 3, 4

Mites: 100% control Retreatment required if:

- Food Handling: 3 or more arthropods/room/survey

- Offices/Admin: 3 or more arthropods/room/survey

- Industrial Areas: 5 or more arthropods/room/survey

- Outdoors: 5 or more arthropods in a 100 square foot area

7 days (ULV)

Superscript:

1. After notification.

2. After first control action.

3. Based on performance assessment (i.e., surveys, customer complaints).

Notes:

1. Regularly scheduled, periodic pesticide applications are not approved for DoD property.

2. Liquid, dust, or aerosol pesticide formulations shall not be applied indoors when food is exposed or spaces are occupied.

3. Treatment of areas outside or adjacent areas to the designated area does not constitute an added service call or charge.

4. Report conditions conducive to pest infestation to the COR and PAR within one working day following survey.

5. Coordinate with residents/building personnel on specific treatment and re-entry times.

6. The ULV machine shall be calibrated for generating proper droplet sizes and range before starting any work under this contract and thereafter every 90 days or every 50 hours of use, whichever comes first. Maintain a log of ULV machine hour use.

Attachment J-1503020-08 Public Health Pest Requirements

Performance Standard

2 days (nest removal)

Retreatment required if:

-Outdoors/Dumpsters: 10 or more adults or immatures -Outdoors: 5 or more adults or immatures 1, 2, 3, 4

Improved areas: 3 or more ticks seen or 3 customer complaints Semi-Improved Area or Unimproved Area: 10 or more ticks by survey, 3 customer complaints, or 3 ticks seen

NOTES:

1 - Regularly scheduled, periodic pesticide applications are not approved for DoD property.

2 - Liquid, dust, or aerosol pesticide formulations shall not be applied indoors when food is exposed or spaces are occupied.

3 - Treatment of areas outside or adjacent areas to the designated area does not constitute an added service call or charge.

4 – Report conditions conducive to pest infestation to the KO and Integrated Pest Management Coordinator within one working day following survey.

5 - Pesticide applications shall not be made during hours of operations or when children are present at schools, child development centers, and youth activity centers.

6 - Coordinate with residents/building personnel on specific treatment and re-entry times.

7 - The ULV machine shall be calibrated for generating proper droplet sizes and range before starting any work under this contract and thereafter every 90 days or every 50 hours of use, whichever comes first. Maintain a log of ULV machine hour use.

8 - Aerial applications of pesticides require validation and approval by a pest management consultant.

9 - The adulticide is applied at maximum label rate for the adulticide used.

10 - The KO shall designate areas where mosquito larva should be controlled on a map supplied by the government. The areas may be intermittent water (developed from surveys for larval breeding sites), or permanent water sites

Attachment J-1503020-09 Structure Damaging Pest Requirements

Performance Standard

See Below

7 days (not swarming)

See Pest Group 019: Termite and Wood Decay Inspection Below

2. After first control action.

3. Based on performance assessment (i.e., surveys, customer complaints).

Notes:

1. Liquid, dust, or aerosol pesticide formulations shall not be applied indoors when food is exposed or spaces are occupied.

2. Report conditions conducive to pest infestation to the COR within one working day following survey.

3. Use the Termite and Wood Decay Inspection - DD Form 1070 and submit report to the KO and COR within two working days following survey.

4. Follow Termite Control Specifications (below) for termite management.

5. If the infestation is a beetle species that will not reinfest seasoned dead wood, treatment shall not be performed. Provide a report to the KO and COR within two working days following survey detailing the species of beetle and the fact that it will not reinfest seasoned dead wood. This should refer to parasitic or biting mites only, e.g. bird mites, chiggers.

DD FORM 1070

TERMITE AND WOOD DECAY INSPECTION

(DD Form 1070) (Use with Pest Group Sheet 019)

DATE INSPECTED

BUILDING NUMBER

PERM TEMP

I. FAVORABLE TERMITE AND FUNGI INFESTATION CONDITIONS

WOOD IN CONTACT WITH SOIL

POOR VENTII ATION UNDER BUILDING

FORM BOARDS LEFT IN CONCRETE

WATER COLLECTIONS UNDER BUILDING

WOOD MEMBERS SET IN CONCRETE FLOOR

VINES AND SHRUBS AGAINST BUILDING

WOOD STEPS IN CONTACT WITH SOIL

LEAKY PLUMBING IN PUTTING

WOOD STEPS WITHOUT SHIELDS

WOOD SCRAP PILED TINDER BUILDING

WOOD SIDING IN CONTAI.T WITH SOIL

LOOSE WIRE IN CONTACT WHH SOIL

NO SHIELDS ON FOUNDATION

FAULTY TERMITE SHIELD

II. LOCATION OF INFESTATIONS

FOUNDATION TIMBERS

BASEBOARDS

WOOD PILLARS

DOOR FRAMES

SILLS

WINDOW FRAMES

CROSS BEAMS

STEPS

FURNITURE

ROOF

FLOOR

STUDS

SUBTER-

RANEAN

NONSUBTER

RANEAN

WOOD DECAY

W000

STAINING

STRUCTURAL

WEAKENING

VI. REPAIR AND TREATMENT

REMOVAL OF WOOD FROM SOIL CONTACT

REPAIR OF TERMITE SHIELDS

SEALING CRACKS IN CONCRETE

REMOVAL OF CONCRETE FORMS

POINTING UP POOR MORTAR

REMOVAL OF VINES AND SHRUBS

LOWERING GRADE LEVEL

REMOVAL OF WOOD TRASH

CAPPING CONCRETE FOUNDATION

OTHER (Specify)

IMPROVING DRAINAGE UNDER BUILDING

IMPROVING VENTILATION UNDER BUILDING

VII. CHEMICAL CONTROL

APPLICATION OF POISON DUST TO SHELTER TUBES

YES NO

CHEMICAL USED

SOIL POISON

YES NO

REPLACEMENT OF DAMAGED WOOD

YES NO

DRILLING AND FLOODING TREATMENTS YES NO

CHEMICAL USED

WOOD INJECTION FOR DRY WOOD TERMITE YES NO

CHEMICAL USED

VIII. COST

IX. TREATMENT EFFECTIVENESS

Attachment J-1503020-10 Lawn Turf and Ornamental Plant Pest Requirements

Performance Standard

See Below

Retreatment required if:

- 3 or more leaf feeding arthropods on 20 leaves surveyed, OR

- 3 or more bagworms on 20 evergreen branches surveyed, OR

- 3 or more scale insects on 5 tree branches surveyed, OR

- 3 or more scale insects on 6 ornamental branches surveyed, OR

- Defoliation of 10% or more of the plant compared to a previous observed status, OR

- General, noticeable physical decline of a plant that is caused by a pest, disease, or other damaging biotic agent.

1, 3, 4

2. After first control action.

3. Based on performance assessment (i.e., surveys, customer complaints).

Notes:

1. Report conditions conducive to pest infestation to the COR within one working day following survey.

2. The Contractor may provide irrigation if required at no additional cost. Water for irrigation may be made available for the Contractor's use at fire hydrants located throughout the activity area; however, the COR should be contacted prior to their use.

3. Post/Notify as required by applicable state/local regulations.

4. Misapplication to target areas, or drift, runoff or other off-target effects that kill or damage any vegetation shall result in the Contractor replacing that vegetation at no charge to the Government.

Attachment J-1503020-11 Vegetation Management Requirements

Performance Standard

See Below

2. After first control action.

3. Based on performance assessment (i.e., surveys, customer complaints).

Notes:

1. Report conditions conducive to pest infestation to the COR within one working day following survey.

2. Post/Notify as required by applicable state/local regulations.

3. Misapplication to target areas, or drift, runoff or other off-target effects that kill or damage any vegetation shall result in the Contractor replacing that vegetation at no charge to the Government.

4. Permits may be required to perform this work (i.e., NPDES permit, FWS permit). The contractor shall obtain all permits and provide a copy to the KO and COR prior to commencing control.

Attachment J-1503020-12 Vertebrate Pest Requirements

Performance Standard

See Below

5 days (community) 7 days (single bat) 90 days (community)

3 days (outdoors) 10 days (indoors) 30 days (outdoors)

Retreatment required if rodent signs are identified after treatment 1, 2, 3, 4

Retreatment required if:

- Indoor Industrial and Outdoors: 5 or more birds 2, 4, 5, 6, 11

Immediately (emergency, indoors 3 days, 24 hr. (emergency, indoors)

2. After first control action.

3. Based on performance assessment (i.e., surveys, customer complaints).

4. General Bird Control: 3 working days, 1 day in occupied spaces; BASH: 24 hours; BASH Emergency Call (Mission affected): Immediately

Notes:

1. Regularly scheduled, periodic pesticide applications are not approved for DoD property.

2. Report conditions conducive to pest infestation to the COR within one working day following survey.

3. Caught rodents shall not be left in traps for longer than 24 hours. Rodenticides should not be used in day care centers, schools or areas where food is prepared or served without special approval from the KO and notification of the Preventive Medicine Department.

4. Carcass disposal, transportation, disposition, deodorizing etc. are considered a normal part of pest control and are at no additional cost to the government.

5. Permits may be required to perform this work (i.e., NPDES permit, FWS permit). The contractor shall obtain all permits and provide a copy to the KO prior to commencing control.

6. Only three species of birds (European starling, English sparrow, and pigeons) may be controlled without a permit from the US Fish and Wildlife Service. Use of ultrasonic, electromagnetic, sonic repellant devices or electric shock devices is prohibited.

7. Feral Cats: Captured feral cats may be taken to the local humane society or animal shelter. Feral cats and other animals shall not be neutered and released onto the installation.

8. Wild Vertebrates That Do Not Transmit Rabies: Consult with Natural Resources prior to conducting any vertebrate control measures. Relocation and release of captured animals must be done in accordance with all Federal, State, and local regulations. If transport/release is not possible or practical the animal may be euthanized humanely and the carcass disposed of in accordance with county/local laws.

9. Leg hold traps or other devices that will harm animals are prohibited. Traps shall be placed and set in such a way as to prevent harm to humans and minimize harm to non-target animals.

10. Non-lethal control is required unless the animal appears rabid, sick, is extremely aggressive and poses a danger to the contractor during trapping, poses a danger to personnel or is a nuisance animal. Captured animals shall be scrutinized for sickness. If sickness is suspected, or animals are defined as nuisance species, they shall be humanely euthanized. Coordinate with Base Medical Department for carcass disposition (disposal or transport as applicable). If animals appear healthy, transport/release if possible, or dispose of at the discretion of the KO. Relocation and release of captured animals must be done in accordance with all Federal, State, and local regulations. Animals defined as nuisance animals should be humanely euthanized rather than relocated and released.

11. Consult with Natural Resources before considering lethal control of vertebrates. If permitted, firearms use shall always be coordinated with Base Security.

Attachment J-1503020-13 Termite Control Specifications

Unscheduled Structural Pest Control Services. The Contractor shall provide structural pest control services on an unscheduled (indefinite quantity) basis as specified below. Services shall be completed within five working days after receipt of the task order. At the time of any soil treatment application, the soil shall be in a condition with low moisture to allow uniform distribution of the treatment solution throughout the soil. The Contractor shall not apply pesticide during or immediately following heavy rains, or when conditions will cause runoff and create an environmental hazard. No pesticides shall be applied to the soil beneath a plenum air space. Pesticides shall not be applied until the approximate location of water and sewer lines are known.

(1) Subterranean Termite Control. All termite infestations in the structure shall be controlled within 30 days of treatment. Toxicants shall be delivered to the project site in sealed and labeled containers as supplied by the manufacturer or formulator. Labels shall bear the manufacturer's warnings to be observed in handling and use of material, and bear evidence or registration under the FIFRA.

a) MATERIALS. "The termiticide used for control of subterranean termites shall be a soil applied nonrepellent termiticide (such as fipronil, imidacloprid or chlorfenapyr). If needed, remedial treatments can be applied to wooden structural members using a borate product containing the active ingredient disodium octaborate tetrahydrate (i.e. Tim-BorTM, Bora-CareTM ). The termiticide product shall be applied at the highest labeled rates and concentrations."

1. Delivery and Storage. Termiticide shall be delivered to the project site in sealed and labeled containers as supplied by the manufacturer or formulator. Labels shall bear manufacturer's warnings to be observed in handling and use of the material. Labels shall bear evidence of registration under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) as amended by the Federal Environmental Pesticide Control Act (FEPCA) of 1972.

2. Samples. The Contractor shall submit on request, or the Contracting Officer may draw at any time, without prior notice, from stocks at the site of the work, samples of insecticide concentrates and diluted insecticide solutions or emulsions being used or presumed to be for use in this work. Should analysis indicate such samples to contain less than the amount of active ingredient claimed on the label or specified herein, then all work done with such insecticides shall be repeated using insecticides conforming to this specification without additional cost to the Government.

b) APPLICATION SHALL BE MADE IN THE FOLLOWING MANNER:

1. Interior Areas to be Treated. Expansion or construction joints located under and adjacent to interior and exterior walls shall be treated by drilling holes through the floor slab and injecting the proper insecticide. Drill holes should be spaced in a manner that will allow for application of a continuous chemical treatment zone (i.e. holes approximately 3/8 inch in diameter and no more than 12 inches apart, on center, not more than 6 inches from the wall being treated). Termiticide shall be applied into these holes under pressure at a rate as specified on the insecticide label. Plumbing chases shall also be treated.

2. Exterior Areas to be Treated. Soil adjacent to the outside of wall shall be treated. The treatment shall extend from the top of the footing to the top of the soil to form a vertical insecticide barrier along the building at the rate of not less than four gallons per ten linear feet per foot of depth. Backfill shall be tamped and sufficient in quantity to provide a surface sloping away from the structure. Voids in concrete block walls, and between brick veneer and foundation walls shall be treated by drilling and injecting insecticide as specified on the label.

3. Label Requirements. Rates and methods of application shall be in strict accordance with the printed instructions on the manufacturer's insecticide label with the insecticide applied at the highest labeled rate and concentration. Conflicts between this specification and label directions shall be resolved in favor of the label and discussion with the COR. Prior to performing the work, the termiticide label, labeling and Safety Data Sheet (SDS) must be submitted to the KO and COR for acceptance.

c) DRILL HOLES

1. Drill holes in masonry walls shall be plugged neatly and solid using 1:2 sand cement mortar.

2. Drill holes in floor slabs shall be plugged neatly and solid using an approved non-shrink grout.

3. Drill holes in expansion joints shall be sealed with an approved mastic cement. Excess mastic shall be removed and left neat.

d) EXISTING UTILITIES. The Contractor shall determine in advance of commencing work the locations of water lines, drain lines, fuel oil lines and heating ducts, and shall avoid damage to these lines and ducts during drilling and rodding operations. Any damage caused by the Contractor's operations, if not conducted according to the information obtained from the Contracting Officer, shall be immediately repaired at the Contractor's expense.

e) SITE PROTECTION AND BACKFILL TREATMENT. All shrubbery shall be protected from damage during all operations under this contract. Any such damage incurred shall be immediately corrected at no cost to the Government. Where grass is removed from trenching or excavated material, after backfilling, the sod shall be replaced and thoroughly dampened with the approved termiticide solution if allowed by the insecticide label.

f) CERTIFICATION OF WORK. Upon final completion of the soil treatment, and as a condition for final acceptance, the Contractor shall furnish a written certificate stating:

1. Insecticide used had required concentration, brand name, and manufacturer thereof.

2. Rate and method of application complied in every respect with the standards contained herein.

g) WARRANTY. The Contractor shall provide the Contracting Officer with a written warranty, in acceptable form, for each building or building unit treated for subterranean termites. The warranty shall be prepaid (to be included in the total price of the treatment) good for a period of no less than five years, guaranteeing retreatment of any subsequent infestation and further that any structural damage due to an infestation after the initial treatment shall be repaired at no additional cost. A detailed written structural assessment shall be made by the Contractor with concurrence by the Contracting Officer prior to initial treatment for reference at a later date, should there be any questions of subsequent damage. The limit of the Contractor's liability for repairs is $25,000 per building.

(2) Drywood Termite Control. Provide drywood termite control as described below. The presence of an inspector trained in fumigation is essential while fumigant concentration readings are taken to determine that all drywood termites are killed during fumigation. Adherence to proper procedures must be assured while the work is being accomplished.

a) Safety Measures. The Contractor shall ensure proper techniques and procedures are followed. Precautions shall be taken to prevent injury to any person and damage to property as a result of work accomplished under this section. These precautions shall include, but are not limited to, the following:

1. Safety Equipment. Before releasing any gas, the Contractor shall deliver to the COR, ready for use by Government personnel, two full-face gas masks, each with two new, unused canisters appropriate for the gas to be employed, or a similar number of self-contained breathing apparatuses, each with a cylinder of air; a completely stocked and illustrated fumigator's first aid kit (all meeting specifications of the Health and Safety Division, Bureau of Mines, U.S. Department of the Interior); and at least one approved low-volume gas detector for the fumigant to be employed. All such equipment will be held at the site until completion of the work.

2. Notification of Security Officer. The activity Security Officer shall be notified at least 24 hours prior to the commencement of fumigation operations, and upon completion of the work that the building is being left unattended.

3. Disconnection of Services. Prior to fumigation, all gas and other fuel supplies shall be cut off. Electric and telephone service need not be disconnected; however, the electric main entrance switch shall be pulled. All fires, including pilot lights, shall be extinguished prior to beginning fumigation procedures. After fumigation and subsequent ventilation has been completed, electric power, pilot lights, etc., shall be turned on or relit. Damage to any service caused by the Contractor shall be repaired at no additional cost to the Government.

4. Barricades. A double rope barricade shall be placed no closer than 20 feet to, and around the entire perimeter of the building to be fumigated. Existing fences may substitute for rope barricades if they are at least 20 feet from the building.

5. Signs. Warning signs shall be placed prominently on all means of ingress to the building and grounds, including fences and rope barricades surrounding the work. Signs shall include a statement that the building is being fumigated with “sulfuryl fluoride” gas. Signs shall not be less than 18 by 24 inches in size and shall meet all state and local wording requirements.

6. Guards. At least two guards shall be placed around the building before gas is released. Guards shall be positioned at either end of the structure so the maximum amount of the building is under continuous observation. Guards, warning signs, and barricades shall be maintained during the entire fumigation process until the Contractor has checked for gas concentration and declares the entire area gas free and safe for normal occupancy.

7. Lighting. The Contractor shall provide adequate lighting around the exterior of the structure being fumigated to permit ready detection of trespassers during the night.

8. Evacuation of Personnel. After all persons and animals are evacuated from within and under the building, guards are posted, and prior to release of the fumigant, the Contractor and KO shall jointly inspect all rooms and spaces to assure evacuation is complete.

9. Partial Fumigation. No partial fumigation of any building shall be allowed.

b) Preparation.

1. Grass and Shrubbery. Wet the soil in planted areas to a depth of six inches for a distance of one foot outward from the areas to be covered by the tarp, to protect nearby plant roots from injury. In this respect, the Contractor shall exercise every precaution to protect and preserve grass and shrubbery that may come into contact with the building. Any plants, shrubs, or grass damaged by the gas or otherwise, shall be replaced at no additional cost to the Government.

2. Sampling. Furnish and install a minimum of four polyethylene tubes leading from approved locations within the structure to an approved location outside for the purpose of recording gas concentrations. Also furnish for use and have available during the entire fumigation period an approved thermal conductivity gas metering device, correctly calibrated in ounces per 1,000 cubic feet for the fumigant to be employed, and capable of sampling from the polyethylene tubes.

3. Removal of Damageable Items. Remove all items from the building that might be damaged by the fumigant and maintain in locked storage. Lost or damaged items shall be repaired or replaced by the Contractor at no additional cost to the Government.

4. Building Proper. In preparing the building for fumigation, exterior doors and windows and all entrances to enclosed interior areas, such as doors or windows leading to closets or cabinets or between rooms, shall be opened to facilitate distribution of the gas during fumigation and insure maximum ventilation at the end of the fumigation period.

c) Procedure.

1. General. The building to be fumigated shall be completely enclosed with a gas-impervious tarpaulin material, with all sheeting seams securely sealed, and the lower edges of the enveloping cover sealed to the ground or finish grade level in a trench, with moist soil or with sand/water snakes (flexible tubing filled with water).

2. Introduction of Chloropicrin. After preparation and sealing of the structure (except for one entrance) and prior to injection of the sulfuryl fluoride (Vikane), the Contractor shall introduce chloropicrin into the structure. The chloropicrin shall be introduced by placing cotton in shallow dishes, setting the dishes in the air stream of an electric fan within the structure, and pouring the chloropicrin over the cotton at the rate of one ounce per 10,000 to 15,000 cubic feet of space to be fumigated. The building will then be sealed and the fans started.

3. Fumigation. After introduction of the chloropicrin, the fumigant described below shall be released from cylinders placed outside the enclosed areas through not less than two hoses of either rubber, polyethylene tubing, or copper tubing leading to points well distributed within each floor of the building as previously approved by the KO. The liquid shall be injected at a temperature and pressure to guarantee complete vaporization upon its release. Sufficient air turbulence shall be created to maintain uniform distribution of the fumigants throughout all portions of the building and to prevent stratification of gas at any location by use of not less than four electric fans, each having a capacity of 3,000 to 5,000 cubic feet per minute (CFM).

4. Fumigant and Dosage Rates. The fumigant shall be sulfuryl fluoride (Vikane) gas, injected in vapor form, and maintained in accordance with Dow Chemical Company Fumiguides B and Y. When the whole Fumiguide calculated initial concentration is obtained from all sampling points, the 24-hour fumigation time period starts. If the Contractor wishes to increase dosage rates to shorten the fumigation time in accordance with Fumiguide Y, prior approval of the KO and the NAVFAC PPMC is required.

5. Borate Treatment. In addition to the aforementioned treatment, a glycol borate solution of Bora-CareTM shall be applied in attic and crawl spaces of the building. Apply a one-part water to one-part Bora-CareTM solution to the point of run off (one gallon of diluted solution for each 500 feet of surface area) to all exposed wood surfaces. Follow all labeled directions for the safe handling and use of this product. Aerosol application will be allowed only in inaccessible areas and with the prior approval of the KO.

6. Sampling. During the actual 24-hour fumigation period, the gas-laden atmosphere within the enveloped structure shall be sampled from each sampling point five times: at the inception, and at four, eight, 16, and 24 hours after inception.