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PERCOLATION TEST RESULTS. ON JUNE 19 , 1995 , THE PROJECT SITE WAS TESTED TO DETERMINE THE PERCOLATION RATE , PARCELS 1 AND 2 WERE TESTED. PARCEL 1 PASSED THE PERCOLATION TEST WITH A PERCOLATION RATE OF 34 MIN/INCH FOR A DEPTH OF 3 FEET. PARCEL 2 FAILED THE TEST AT A DEPTH OF 3 FEET. WE ARE RECOMMENDING TO RETEST THE PERCOLATION TEST FOR PARCEL 2 AT A DEPTH BETWEEN 3 TO 25 FEET AT THE TIME OF DEVELOPMENT, BECAUSE IT WOULD .BE DIFFICULT IF NOT IMPOSSIBLE TO FIT A DRILLING RIG BETWEEN THE ROWS OF THE EXISTING GRAPE VINEYARD. PERCOLATION TESTS WERE CONDUCTED IN ACCORDANCE WITH SAN JOAQUIN COUNTY ENVIRONMENTAL HEALTH DEPARTMENT REQUIREMENTS. COMMENTS REGARDING EXISTING SEPTIC SYSTEMS: BASED ON THE INFORMATION GIVEN ON SHEETS 4 AND 5 , THE EXISTING SEPTIC SYSTEMS IN THE AREA ARE FUNCTIONING WITH NO PROBLEMS EXCEPT FOR THE REPAIR OF THE SYSTEMS LOCATED ON 12312 AND 12400 N . TULLY ROAD, AND 16450 E. HARNEY LANE. NO RECORDS OF THE INSTALLATION OF ORIGINAL SEPTIC SYSTEM FOR THESE PROPERTIES WERE FOUND, AND NO REPAIRS WERE PERFORMED SINCE THESE REPAIRS. THE EXISTING SEPTIC SYSTEMS IN THE AREA ARE USING A SEPTIC TANK, SEEPAGE PIT OR PITS , AND LEACH LINES . SEEPAGE PITS WITH A DEPTH OF 25 FEET WITH A DIAMETER OF NO LESS THAN 33 INCHES ARE BEING USED FOR THE EXISTING SYSTEMS. ENGINEER'S OPINION SOIL SUITABILITY: FROM THE RESULTS OBTAINED FROM THE PERCOLATION TESTS AND EXISTING PERMITS FOR THE REPAIR AND INSTALLATION OF PRIVATE DISPOSAL SYSTEMS, THE SEPTIC SYSTEMS FOR THE PROJECT SITE SHOULD CONSIST OF A 10 , 000 SQUARE FOOT LEACH FIELD AREA WITH THE APPROPRIATE SIZE SEPTIC TANK FOR PARCEL 1 , AND SEEPAGE PITS AND SEPTIC TANK WITH THE APPROPRIATE SIZE LEACH FIELD AREA DESIGNED WHEN A PERCOLATION TEST IS PERFORMED AT THE TIME OF DEVELOPMENT OF PARCEL 2 . PARCEL 1 HAS AN EXISTING SEPTIC SYSTEM FOR THE EXISTING MOBILE HOME. EACH SYSTEM SHALL BE DESIGN FOR THE SOIL CONDITIONS IN THE AREA, AND THE SIZE OF THE FACILITY TO BE SERVED. SEEPAGE PITS SHOULD HAVE A MINIMUM DIAMETER OF 33 INCHES, AND SHALL NOT BE INSTALLED TO A DEPTH OF GREATER THAN 25 FEET THE GROUNDWATER TABLE IS LOCATED APPROXIMATELY 129 FEET BELOW THE GROUND SURFACE. THEREFORE, THE GROUNDWATER LEVEL WILL MEET THE TEN FOOT MINIMUM DISTANCE BETWEEN THE BOTTOM OF THE SEEPAGE PITS AND THE TOP OF THE GROUNDWATER TABLE . THE SEPTIC SYSTEM SHOULD NOT ADVERSELY AFFECT THE GROUND WATER TABLE . IT IS OUR PROFESSIONAL OPINION THAT THE FINDINGS INCLUDED IN THIS STUDY ARE A REPRESENTATIVE ASSESSMENT OF THE PROJECT AREA AT THE PRESENT TIME. THIS OPINION CANNOT CONSTITUTE A GUARANTEE OR WARRANTY, EITHER EXPRESSED OR IMPLIED. SHEET 6