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PUBLIC ftEALTH SERVtES <br />SAN JOAQUIN COUNTY <br />ENVIRONMENTAL HEALTH DIVISION <br />Ernest M. Fujimoto, M.D., M.P.H., Acting Health Officer <br />445 N. San Joaquin Street • P.O. Box 388 • Stockton, CA 95201-0388 <br />(209) 468-3420 <br />May 20, 1994 <br />Scott Walker <br />California Integrated <br />Waste Management Board <br />8800 Cal Center Drive <br />Sacramento, CA 95829 <br />Re: French Camp Landfill Alternative Daily Cover (ADC) Project Monitoring <br />Environmental Health Division (EHD) is monitoring the geosynthetic blanket ADC <br />project at French Camp Landfill (FCL). Section 17683 of the California Code of <br />Regulations are being used as monitoring guidelines. Modifications to Section 17683 <br />are discussed and being employed as follows: <br />1. Weekly inspections of the ADC will be conducted every third month beginning <br />May 1, 1994. Attention will be given to pertinent cover problems such as <br />rips, vector problems, cover effectiveness, etc. <br />2. Fly grill surveys will be done weekly every third month according to Section <br />17683. If the threshold fly count is exceeded on any grill survey a fly <br />composition study will be completed. Any vector problem will be addressed <br />immediately. Section 17683 performance standards for fly evaluation were <br />utilized at FCL through 1993. Flies have not posed a problem to date. <br />3. Rat trapping will be conducted in April 1994. If visual signs of rats are <br />observed during any weekly inspection (such as burrows, droppings, etc.) <br />trapping will be done at that time. If a rat is trapped then Section 17683 <br />protocol will be followed in regard to rat vectors. <br />Rat trapping per Section 17683 began at FCL in 1993 and continues to <br />present. No rats have been trapped to date nor have any rat signs been <br />observed. FCL accepts only green waste which is not a particular attractant <br />to rats. <br />The goal of EHD is to monitor ADC projects effectively and efficiently. The more our <br />monitoring of these projects focuses on real and practical concerns the better we can <br />safeguard against potential health risks. <br />A Division of San Joaquin County Health Care Services <br />