Attachment-25 Termite Control Specifications.pdf

ATTACHMENT 25

TERMITE CONTROL SPECIFICATIONS

Unscheduled Structural Pest Control Services. The Contractor shall provide structural pest control services on an unscheduled (Non-Recurring Work) basis as specified below. Services shall be completed within the time frame stated in 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 fripronil, 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.

TERMITE CONTROL SPECIFICATIONS (cont'd)

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. Prior to performing the work, the termiticide label, labeling and Material Safety Data Sheet (MSDS) must be submitted to the Contracting Officer for approval.

(c). DRILL HOLES

1. Drill holes in masonry walls shall be plugged neatly and solid using 1.2 sand cement motor.

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 CO, 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” or the name of another fumigant 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 CO 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 CO. 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 CO 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 CO.

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. The Contractor shall take appropriate action to ensure proper distribution of the gas and maintenance of the level of concentration specified. Sample readings shall be recorded and a copy of the readings provided to the CO upon completion of the treatment.

(d) Aeration. Upon termination of the fumigation exposure period, the Contractor shall remove all seals, open all doors and windows, and use ventilation fans to remove fumigants from dead air pockets with full observance of accepted safety, state, and labeled aeration procedures to avoid exposure of any persons or other life to dangerous concentrations of fumigant gas. The Contractor shall check for complete aeration with a low-volume gas detector in all enclosures, which might retain concentrations of gas, such as closets, cabinets, refrigerators, and chests, and certify to the CO that the structure is gas free and available for occupancy.

(e) Clean Up. Upon completion of the fumigation, remove all debris and rubbish resulting from the work, replace damageable items removed from the building, and repair all damage resulting from the work.

(f) Warranty. The Contractor shall guarantee the fumigated building is completely free of living drywood termites for one year after the fumigation is completed. The Contractor, accompanied by the

CO, shall make two thorough inspections of the structure, at six-month intervals, following the fumigation date. The written findings of each inspection shall be provided to the CO within 10 working days after inspection completion. Positive evidence of drywood termite infestation, except from furniture and other moveable property installed during the one-year period, shall constitute conclusive evidence of improper fumigation and lack of control, and the building shall be re-fumigated at no additional cost to the

Government.