Guidelines for Preparing DoD Pest Control Contracts Using ...

February 1997AFPMB TIM #39GPWS-QA Guide6. Sample Sizea. Lawns. Not applicable.b. Other Areas. The following sample sizes are established for each level of surveillance.Reduced - 10% of the controlled areasNormal - 25% of the controlled areasIncreased - 50% of the controlled areas7. Sampling Proceduresa. Lawns. Just prior to the beginning of the month, the QAE will choose 25% of the lawns areas tobe serviced, and make an initial baseline inspection to assess and document the estimated quantity andlocation of weeds present prior to treatment.b. Other Areas. Each month, the QAE will choose the appropriate number of improved groundsareas based on the level of surveillance being used. Areas will be chosen on an arbitrary and rotatingbasis so that selection will be consistent from month to month, and so that all controlled locations will beperiodically included in the sample.8. Evaluation Proceduresa. Lawns. After the herbicide has been given sufficient time to work, the QAE will inspect the lawnareas chosen and compare with that of the baseline assessment. Quality of work will be consideredsatisfactory if there has been at least a 70% reduction in the quantity of weeds. Timely service will beconsidered unsatisfactory if the herbicide treatment is not completed in accordance with the Contractor'sapproved schedule.b. Other Areas. Fence lines, cracks, obstacles, and other items in the selected areas may beinspected at any time during the month since they must be maintained vegetation free at all times.Evaluations of work quality will be based on the concept of substantial completion. In general, work willQA-65