Laserfiche WebLink
STANDARD REPORT FORMS REQUIRED: ALL SOIL BORING LOGS, PERCOLATION TESTS, AND SYSTEM DESIGN PROPOSALS <br /> MUST BE REPORTED ON STANDARD REPORT FORMS (MOST SITE EVALUATORS CURRENTLY USE THE STANDARD PERCOLATION <br /> TEST AND SOIL BORING LOGS). THE SITE PLAN MUST BE ATTACHED, AND THE ENTIRE PACKAGE SUBMITTED FOR <br /> REVIEW AT ONE TIME. PIECEMEAL SUBMITTALS WILL DELAY PROCESSING. <br /> NOTE: IF A SITE EVALUATION WAS PERFORMED ON YOUR LOT DURING THE SUBDIVISION PROCESS, THE RESULTS ARE -' <br /> AVAILABLE FROM THE BUILDING AND ZONING DEPARTMENT (473-7357) . YOU MUST STILL SUBMIT A SITE PLAN AND <br /> SYSTEM DESIGN PROPOSAL. <br /> SITE PLAN REQUIREMENTS. SITE PLAN SHOULD BE TO SCALE (PREFERABLY 1" 201, 40' or 501) AND MUST <br /> INCLUDE THE FOLLOWING: <br /> A. ALL PROPERTY LINES AND LOT DIMENSIONS. <br /> B. ALL EXISTING AND PROPOSED STRUCTURES. <br /> C. ALL EXISTING AND PROPOSED WELL LOCATIONS AND/OR WATER SUPPLY PIPING. <br /> D. RELATIVE ELEVATIONS OF HOUSE, LOT CORNERS, TANKS, AND DRAINFIELD SITES. <br /> E. SLOPE OF GROUND AT DRAINFIELD SITES (CONTOUR LINES OR SLOPE DIRECTION ARROWS AND SLOPE 8). <br /> F. LOCATION OF ALL PERCOLATION TEST HOLES AND SOIL BORINGS, WITH IDENTIFYING SYMBOLS AND <br /> RELATIVE GROUND ELEVATIONS OF EACH. <br /> G. PRIMARY AND ALTERNATE DRAINFIELD AREAS IDENTIFIED. <br /> H. DISTANCE FROM PRIMARY AND ALTERNATE DRAINFIELD AREAS TO PROPERTY LINES, WELLS, AND ANY <br /> MARSH, LAKE, STREAM, OR DRAINAGE CHANNEL WITHIN 75' OF ANY PART OF THE SYSTEM. <br /> fffwwfwfffwwwwww►►wa+ttwfwfwfrwwffwwwrwffwwwtwffwwwwtwwwwwfwwfww+twwwffwfrrwwwwffwfwfwfffwwwwwwfffwfwffwf <br /> GENERAL SEPTIC SYSTEM REQUIREMENTS <br /> 1. THE TRENCH DRAINFIELD SYSTEM IS STANDARD AND MUST BE USED WHENEVER POSSIBLE. MOUND SYSTEMS <br /> MAY BE SUITABLE FOR NEW DEVELOPMENT AND FOR REPLACEMENT OF EXISTING FAILING SYSTEMS WHERE <br /> SITE CONDITIONS LIMIT THE USE OF TRENCH SYSTEMS. BED OR WIDE TRENCH SYSTEMS ARE NOT <br /> ALLOWED EXCEPT AS -REPAIRS TO EXISTING SYSTEMS WHERE LOT SIZE SEVERELY LIMITS ALTERNATIVES. <br /> 2. SITE EVALUATION MUST IDENTIFY 10,000 SQUARE FEET OF SOILS AND SLOPES SUITABLE FOR DRAIN— <br /> FIELD. THIS IS GENERALLY A LARGE ENOUGH AREA FOR A PRIMARY AND ALTERNATE (FUTURE) SYSTEM.. <br /> 3. SLOPES: FOR STANDARD TRENCHES, GROUNDSLOPE MAY NOT EXCEED 18%. FOR SHALLOW TRENCHES, <br /> AND FOR STANDARD TRENCHES WHERE IMPERMEABLE SOIL LAYERS MAY CAUSE SIDEHILL SEEPAGE, <br /> GROUNDSLOPE MAY NOT EXCEED 12%. FOR MOUND SYSTEMS, SEE BELOW: = <br /> PERCOLATION RATE ALLOWABLE MAXIMUM SLOPE <br /> 1/2 — 5 MPI 6% NOTE: THESE ARE COARSE SANDY SOILS; 3' MIN. DEPTH TO WATER TABLE. <br /> 5 — 30 MPI 128 MAXIMUM ! <br /> .30 — 60 MPI 69• MAXIMUM _ <br /> 60 — 120 MPI 38 MAXIMUM <br /> OVER 120 MPI MOUNDS NOT ALLOWED <br /> 4. SEASONAL WATER TABLE (IDENTIFIED BY SOIL MOTTLING OR ACTUAL WATER, WHICHEVER IS SHALLOWER). <br /> DEPTH TO SEASONAL W.T. <br /> 0' — 21........................NO SYSTEM ALLOWED <br /> 2' — 4.........................MOUND SYSTEM ALLOWED <br /> 4' — 5.........................MOUND OR SHALLOW TRENCHES ALLOWED <br /> 5' OR DEEPER...................STANDARD TRENCHES OR MOUND ALLOWED <br /> 5. PERCOLATION RATE — SYSTEM OPTIONS <br /> 0 MPI.........NO SYSTEM ALLOWED; TOO POROUS FOR TREATMENT <br /> — 60 MPI........STANDARD TRENCHES ALLOWED <br /> 60 — 90 MPI........MOUND SYSTEM; FILL TRENCHES MAY BE ALLOWED WHERE <br /> WATER TABLE IS NOT A FACTOR. <br /> r <br /> 90 — 120 MPI.......MOUND SYSTEM ONLY; OVER 120 MPI, NO SYSTEM ALLOWED. <br /> 6. SETBACKS A) SEPTIC TANKS FROMs <br /> HOUSE.................'........10' MINIMUM; 20' PREFERRED. <br /> WELL.........................50' MINIMUM; 75' PREFERRED. <br /> LAKE, STREAM, WETLAND........75' MINIMUM <br /> B) DRAINFIELD FROM: <br /> HOUSE, DRIVEWAY, PATIO, POOL, TENNIS COURT, <br /> OTHER HARDCOVER DISCHARGING TOWARD DRAINFIELD......20' MINIMUM <br /> WELL...............................................75' MINIMUM <br /> -- <br /> LAKE, STREAM, 75' MINIMUM WETLAND.............................. , <br /> I <br /> 22 <br />