COMPLIANCE INFO_NL STDY - Laserfiche WebLink

Home Browse Search

.ti Mr.Jadi Singh Page 12 January 23,2003 be utilized. Based on our investigation and review of literature, we believe that a disposal area of 2,500 square feet should be sufficient for the facility 9.0 CONCLUSIONS AND RECOMMENDATIONS Based on the information examined during this investigation, it is our opinion that the site's disposal field is suitable for use with a package treatment system at a maximum rate of 3000 gpd +� average daily flow,provided our recommendations are followed. San Joaquin County Environmental Health Department has required a package treatment system and report for the project. In summary, the water quality analysis indicates that the ground water contains a low level of total nitrogen. According to previous ground-water monitoring that had occurred on the site, the ground-water depth had risen to 5.31 feet in April 1996. Based on a review of the records, there is no precedence for a level shallower than 5.31 feet. The percolation rate of the soils below 2 feet were found to be fairly rapid. Because a waste water treatment system is being required for the project,the impact rapidly percolating,partially treated, effluent reaching the shallow ground water aquifer will be substantially reduced. Our recommendations for the project are as follows: The upper 2 feet of soil should be removed within the area designated for the sewage disposal field. This material should be replaced with suitable sandy soil with a percolation rate of less than 5 minutes per inch. Our office can provide +a recommendations for acceptable sand specifications and sources. The finished elevation of the sewage disposal field should be the elevation of the building pad. —Two MicroSepTec 1500 GPD sewage treatment systems or an equivalent system acceptable to San Joaquin County Environmental Health Department should be adequate to treat 3,000 gpd of domestic type waste water. —A filter bed type disposal area should be utilized with a disposal area of 2,500 sq. fl. —A grease trap should be considered to extend the life of the waste water treatment system and disposal field. o s 1,,jQt♦ in.