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Home My WebLink About05060041 C803A Soil Erosion Control Details & SpecsPRACTICE 3.41 ROCK CHUTE REQUIREMENTS (EXHIBIT 3.41 -B AND C) SEE SHEET C202 FOR LOCATIONS OF OUTLET PROTECTION REQUIRED PURPOSE (EXHIBIT 3.64 A) REQUIREMENTS (EXHIBIT 3.64 B) MAINTENANCE COMMON CONCERNS CONTRIBUTING DRAINAGE AREA: 100 ACRES MAXIMUM. CAPACITY: PEAK RUNOFF FROM 10 -YR. FREQUENCY, 24 -HR. DURATION STORM EVENT. APRON: DESIGN DEPENDS ON CHANNEL DEFINITION (SEE EXHIBIT 3.41 -8), BUT IS LONG ENOUGH TO DISSIPATE RUNOFF ENERGY, SET ZERO GRADE, STRAIGHT AND ALIGN WITH THE RECEIVING STREAM. (IF SITE CONDITIONS REQUIRE A CURVE, SET IT NEAR THE UPSTREAM END.) FOUNDATION: GEOTEXTILE FABRIC FOR STABILIZATION AND FILTRATION OR WELL- GRADED GRAVEL FILTER LAYER AT LEAST 6 IN. THICK. M APRON AT ZERO GRADE 10' MIN. NO OVERFALL II. 11 P li. 11. eVe, l 11 11 4.,Vt FILTER FABRIC 25# 751 RIP -RAP d50= 50# 18" MIN. EXHIBIT 3.41 -B. PALL OUT ETD A FO R) A HAT FOR A CHANNEL (LEFT) THAT IS NOT MATERIALS: HARD, ANGULAR, AND HIGHLY WEATHER RESISTANT RIPRAP STONE OF SiZE AND GRADATION THAT WILL WITHSTAND THE VELOCITIES OF THE CHUTE. (SPECIFIC GRAVITY AT LEAST 2.5; SIZE AS SPECIFIED iN DESIGN.) THICKNESS: 12 IN. MINIMUM OR TWO TIMES THE d STONE DIAMETER, WHICHEVER IS GREATER. OUTLET: STABLE. INSTALLATION 1. EXCAVATE THE APRON AREA SUBGRADE BELOW DESIGN ELEVATION TO ALLOW FOR THICKNESS OF THE FILTER (OR GRAVEL LAYER) AND THE RIPRAP. (THIS OVER EXCAVATION GREATLY INCREASES THE AMOUNT OF SPOIL.) 2. COMPACT ANY FILL USED IN THE SUBGRADE TO THE DENSITY OF THE SURROUNDING UNDISTURBED MATERIAL, AND SMOOTH ENOUGH TO PROTECT FABRIC FROM TEARING. 3. PLACE THE GEOTEXTILE FABRIC (OR GRAVEL LAYER) ON THE COMPACTED AND SMOOTHED FOUNDATIONS. IF MORE THAN ONE FABRIC PIECE IS NEEDED, THE UPSTREAM PIECE SHOULD OVERLAP THE DOWNSTREAM PIECE BY AT LEAST 1 FT. 4. INSTALL THE RIPRAP TO THE UNES AND ELEVATIONS SHOWN IN THE DESIGN. IF THE CHANNEL IS POORLY DEFINED, THE FILTER (OF GRAVEL LAYER) AND RIP RAP SHOULD EXTEND TO THE TOP OF THE BANK (EXHIBIT 3.41 -B). 5. IF THE GEOTEXTILE FABRIC TEARS WHEN PLACING THE RIPRAP, REPAIR IMMEDIATELY BY LAYING AND STAPLING A PIECE OF FABRIC OVER THE DAMAGED AREA, OVERLAPPING THE UNDAMAGED AREAS AT LEAST 12 IN. 6. MAKE SURE THE TOP OF THE RIPRAP APRON IS LEVEL WITH OF SLIGHTLY BELOW THE RECEIVING STREAM. (RIPRAP SHOULD NOT RESTRICT THE CHANNEL OR PRODUCE AN OVERFALL.) 7. BLEND THE RIPRAP SMOOTHLY TO THE SURROUNDING GRADE. 8. STABIUZE ALL DISTURBED AREAS IMMEDIATELY FOLLOWING INSTALLATION. MAINTENANCE INSPECT ROCK CHUTES AFTER STORM EVENTS FOR STONE DISPLACEMENT AND FOR EROSION AT THE SIDES AND ENDS OF THE APRON. MAKE NEEDED REPAIRS IMMEDIATELY; USE APPROPRIATE SIZE STONE, AND DO NOT PLACE THEM ABOVE FINISHED GRADE SEE PLAN FOR LIMITS 2' -0" MIN. a rV i 'ter r �tr 1 0 ster oQ j �'`i: g I 11 -err ♦4 t i dri1 "S 4,- AlMilimitekly .v jAwo,, I �M 1 .s NOTE. SEE PLANS AND SPECIFICATIONS FOR SIZE OF RIPRAP. 2' -O" MIN. ANCHOR TRENCH (y -D" RIPRAP DETAIL 18" MIN. DEPTH GEOTEXTiLE ANCHOR FABRIC PRACTICE 3.64 SANDBAG CURB INLET SEDIMENT BARRIER TO TRAP SEDIMENT ON PAVED STREETS THAT RECEIVE RELATIVELY SMALL RUNOFF FLOWS, PREVENTING IT FROM BEING TRANSPORTED FURTHER DOWN THE STREET OR INTO AN INLET, NOTES: (1) TRAPPING SEDIMENT AT A CURB INLET WILL BE DIFFICULT IF EROSION /SEDIMENT CONTROL MEASURES ARE NOT INSTALLED TO REDUCE THE VOLUME OF SEDIMENT REACHING THE INLET. (2) THIS PRACTICE CAN BE USED IN CONJUNCTION WITH OTHER CURB INLET SEDIMENT CONTROLS. LOCATION: ON CURBED PAVED STREET DOWN GRADE FROM LIGHT CONSTRUCTION ACTIVITY (e.g., INDIVIDUAL HOME) AND ABOVE THE INLET. CONTRIBUTING DRAINAGE AREA: 1 ACRE MAXIMUM. CAPACITY: RUNOFF FROM A 2 -YR. FREQUENCY, 24 -HR. DURATION STORM EVENT ENTERING THE STORM DRAIN WITHOUT BYPASS FLOW. HEIGHT: 1 -3 LAYERS OF SANDBAGS (AS NECESSARY) LENGTH: AS NEEDED TO INTERCEPT RUNOFF (3 FT. MINIMUM). TRAFFIC BARRICADES (OPTIONAL): AS NEEDED TO PREVENT VEHICLES FROM HITTING THE BARRIER. RUNOFF 1� GAP BETWEEN BAGS ACTS AS A SPILLWAY SANDBAGS OVERLAP ONTO THE CURS EXHIBIT 3.64 -B. DETAIL OF A SANDBAG CURB SEDIMENT BARRIER TO PROTECT A CURB INLET. INSTALLATION 1. FILL BAGS APPROXIMATELY HALF FULL WITH SAND OR FINE GRAVEL. 2. UPSLOPE FROM THE CURB INLET, LAY THE BAGS TIGHTLY END TO END IN A ROW CURVING FROM THE CURB AND AWAY FROM THE INLET. 3. OVERLAP THE BARRIER ONTO THE CURB, AND EXTEND IT A MINIMUM OF 3 FT. INTO THE STREET TO INTERCEPT THE RUNOFF. 4. IF USING MORE THAN ONE ROW, OVERLAP THE BAGS WITH THE ROW BENEATH, AND LEAVE A ONE -BAG GAP IN THE MIDDLE OF THE TOP ROW TO SERVE AS A SPILLWAY. 5. FOR ADDITIONAL STORAGE CAPACITY, CONSTRUCT A SERIES OF SANDBAG BARRIERS ALONG THE CURB SO EACH TRAPS SMALL AMOUNTS OF SEDIMENT. *INSPECT FREQUENTLY FOR DAMAGE BY VEHICULAR TRAFFIC, AND REPAIR IF NEEDED. *INSPECT AFTER EACH STORM EVENT. *REMOVE SEDIMENT (BUT NOT BY FLUSHING) WHEN IT REACHES HALF THE HEIGHT OF THE BARRIER. *DEPOSIT REMOVED SEDIMENT WHERE IT WILL NOT ENTER STORM DRAINS. VEHICULAR HAZARD IF BARRIER IS TOO HIGH OR TOO LONG CONSIDER USING TRAFFIC BARRICADES. VEHICULAR DAMAGE TO BARRIER REPAIR IMMEDIATELY. SANDBAGS NOT PLACED TIGHTLY TOGETHER RESULTS IN POOR TRAP EFFICIENCY. DRAINAGE AREA TOO LARGE RESULTS IN POOR TRAP EFFICIENCY AND /OR SEDIMENT OVERLOAD. APPROACH TOO STEEP CAUSES HIGH FLOE VELOCITY RESULTING IN POOR TRAP EFFICIENCY AND SANDBAGS DISLODGING; USE A DIFFERENT INLET PROTECTION PRACTICE. SEDIMENT NOT REMOVED FOLLOWING A STORM EVENT--RESULTS IN INCREASED SEDIMENT TRACKING, TRAFFIC HAZARD, AND EXCESSIVE PONDING. PURPOSE (EXHIBIT 3.01 -B) (EXHIBIT 3.01 -C) 1 STAPLE PER SQ. YD. SLOPE LENGTH FT. 300 275 250 225 200 175 150 125 100 75 50 25 4:1 NOTES: 1. BEGINNING AT THE TOP OF THE SLOPE BY ANCHORING THE BLANKET IN A 15" DEEP X 6" 1NDE TRENCH. BACKFILL AND COMPACT TRENCH AFTER STAPLING. 2. THE EDGES OF PARALLEL BLANKETS MUST BE STAPLED 1►ATH APPROX. 2 OVERLAP. 3. WHEN BLANKETS MUST BE SPLICED GOWN THE SLOPE, PLACE BLANKETS END OVER END (SHINGLE STYLE) WITH APPROX. 6' OVERLAP. STAPLE THROUGH OVERLAPPED AREA APPROX. 12- APART. GRADE >2% 1 1/2 STAPLES PER SQ. YD. GENERAL STAPLE RECOMMENDATIONS B A C B C B C B 3:1 51 1:1 SLOPE GRADIENT C LIMO TO KEEP MUD AND SEDIMENT OFF PUBLIC ROADS. PUBUC ROAD PAVEMENT OR EXISTING GRADE TYPICAL SECTION EROSION CONTROL MAT INSTALLATION AT TOP OF SLOPE EROSION CONTROL MAT INSTALLATION DETAIL PRACTICE 3.01 TEMPORARY GRAVEL CONSTRUCTION ENTRANCE /EXIT PAD TO PROVIDE A STABLE ENTRANCE EXIT CONDITION FROM THE CONSTRUCTION SITE. REQUIREMENTS MATERIALS: 2 -3 IN. WASHED STONE (iNDOT CA NO. 2) OVER A STABLE FOUNDATION. THICKNESS: 6 IN. MINIMUM WIDTH: 20 FT. MINIMUM OR FULL WIDTH OF ENTRANCE /EXIT ROADWAY, WHICHEVER IS GREATER. LENGTH: 50 FT. MINIMUM. THE LENGTH CAN BE SHORTER FOR SMALL SITES SUCH AS FOR INDIVIDUAL HOME. WASHING FACILITY (OPTIONAL): LEVEL AREA WITH 3 IN. WASHED STONE MINIMUM OR A COMMERCIAL RACK, AND WASTE WATER DIVERTED TO A SEDIMENT TRAP OF BASIN (PRACTICE 3.72). GEOTEXTiLE FABRIC UNDERUNER: MAY BE USED UNDER WET CONDITIONS OF FOR SOILS WITHIN A HIGH SEASONAL WATER TABLE TO PROVIDE GREATER BEARING STRENGTH. 6 IN. (MIN.) EXHIBIT 3.01 -B. PLAN OF A TEMPORARY GRAVEL CONSTRUC ENTRANCE /EXIT PAD. 2. REMOVE ALL VEGETATION AND OTHER OBJECTIONABLE MATERIAL FROM THE FOUNDATION AREA, AND GRADE AND CROWN FOR POSITIVE DRAINAGE. 3. IF SLOPE TOWARDS THE ROAD EXCEEDS 2 CONSTRUCT A 6 -8IN. HIGH WATER (RIDGE) WITH 3:1 SIDE SLOPES ACROSS THE FOUNDATION AREA ABOUT 1 5 FT. FROM THE ENTRANCE TO DIVERT RUNOFF AWAY FROM THE ROAD (PRACTICE 3.24)(SEE EXHIBIT 3.01 -C). 4. INSTALL PIPE UNDER THE PAD IF NEEDED TO MAINTAIN PROPER PUBLIC ROAD DRAINAGE. 5. IF WET CONDITIONS ARE ANTICIPATED, PLACE GEOTEXTILE FABRIC ON THE GRADED FOUNDATION TO IMPROVE STABILITY. 6. PLACE STONE TO DIMENSIONS AND GRADE SHOWN IN THE EROSION /SEDIMENT CONTROL PLAN, LEAVING THE SURFACE SMOOTH AND SLOPED FOR DRAINAGE. 7. DIVERT ALL SURFACE RUNOFF AND DRAINAGE FROM THE STONE PAD TO A SEDIMENT TRAP OR BASIN. GEOTEXTILE FABRIC TO STABILIZE FOUNDATION (ESPECIALLY IMPORTANT WHERE WETNESS IS ANTICIPATED) 11111111IIIIIIIIIII INSTALLATION 1. AVOID LOCATING ON STEEP SLOPES OR AT CURVES .N PUBLIC ROADS. 8 IN. GEOTEXTILE .--1 I FABRIC 1 M=I 1=1 I I= 2X4 IN. SEE NOTE COMPACTED S(Op SOIL WOOD FRAME EROSION CONTROL MAT INSTALLATION NOTE: INSTALL NORTH AMERICAN SiSO EROSION CONTROL BLANKET OR APPROVED EQUAL. EXHIBIT 3.01 -C• TEMPORARY CONSTRUCTION ENTRANCE /PAD WITH DIVERSION MAINTENANCE INSPECT ENTRANCE PAD AND SEDIMENT DISPOSAL AREA WEEKLY AND AFTER STORM EVENTS OR HEAVY USE. RESHAPE PAD AS NEEDED FOR DRAINAGE AND RUNOFF CONTROL. TOPDRESS WITH CLEAN STONE AS NEEDED. IMMEDIATELY REMOVE MUD AND SEDIMENT TRACKED OR WASHED ONTO PUBLIC ROADS BY BRUSHING OR SWEEPING. FLUSHING SHOULD ONLY BE USED IF THE WATER CONVEYED INTO A SEDIMENT TRAP OR BASIN. REPAIR ANY BROKEN ROAD PAVEMENT IMMEDIATELY. PRACTICE 3.52 FABRIC DROP INLET PROTECTION SUPPORT WIRE 2 STAPLES PER SQ. YD. POST 18" DEEP MIN. BURIED FABRIC COMPACTED FILL I 50 FT. (MIN.) DIVERSION RIDGE 15 FT. 2 -3 IN, COARSE AGGREGATE OVERFLOW LEVEL SET TO PREVENT BY -PASS FLOW BURIED FABRIC APPROACH 1 INSTALLATION 1. TO PREVENT RUNOFF FROM BYPASSING THE INLET, SET THE TOP OF THE FABRIC AT LEAST bin. BELOW THE DOWN SLOPE GROUND ELEVATION, OR BUILD A TEMPORARY DIKE (COMPACTED TO 6In. HIGHER THAN THE FABRIC) ON THE LOW SIDE OF THE INLET (SEE EXHIBIT .3.52-C). 2. CUT THE FABRIC FROM A SINGLE ROLL TO ELIMINATE JOINTS. (PROVIDE AT LEAST 2FT. OF OVERLAP IF A JOINT IS NEEDED.) 3. BURY THE BOTTOM OF THE FABRIC AT LEAST I FT. DEEP, BACKFILL, AND COMPACT ME BACKFILL (SEE EXHIBIT 3.52 -B). 4. SPACE THE SUPPORT POST EVENLY AGAINST THE INLET PERIMETER A MAXIMUM OF 3 FT. APART, AND DRIVE THEM ABOUT 1-1/2 FT. INTO THE GROUND. (OVERFLOW MUST FALL DIRECTLY INTO THE INLET AND NOT UNPROTECTED SOIL MAINTENANCE INSPECT THE FABRIC BARRIER AP ILK STORM EVENTS, AND MAKE NEEDED REPAIRS IMMEDIATELY. REMOVE SEDIMENT FROM THE POOL AREA TO PROVIDE STORAGE FOR NEXT STORM. AVOID DRAINAGE OR UNDERCUTTING THE FABRIC DURING SEDIMENT REMOVAL WHEN THE CONTRIBUTION DRAINAGE AREA HAS STABILIZED, REMOVE AND PROPERLY DiSPOSE OF ALL CONSTRUCTION MATERIAL AND SEDIMENT, GRADE THE AREA TO THE ELEVATION OF THE TOP OF THE INLET, THEN STABILIZED IMMEDIATELY; USE APPROPRIATE SIZE STONE AND DON NOT PLACE THEM ABOVE PRACTICE 3.74 SILT FENCE (SEDIMENT FENCE) 20 FT. (MIN) PUBLIC ROAD RIDGE WHERE GRADE EXCEEDS 2% PROPOSE TO RETAIN SEDIMENT FROM SMALL, SLOPING DISTURBED AREAS BY REDUCING THE VELOCITY OF SHEET FLOW. INSTALLATION 1. PLAN FOR THE FENCE TO BE AT LEAST 10 FT. FROM THE TOE OF SLOPE TO PROVIDE A SEDIMENT STORAGE AREA. 2. PROVIDE ACCESS TO THE AREA IF SEDIMENT CLEANEST WILL BE NEEDED MAINTENANCE INSPECT THE SILT FENCE PERIODICALLY AND AFTER EACH STORM EVENT. iF FENCE FABRIC TEAR, STARTS TO DECOMPOSE, OR IN ANYWAY BECOMES INEFFECTIVE, REPLACE THE AFFECTED PORTION IMMEDIATELY. REMOVE DEPOSITED SEDIMENT WHEN IT REACHES HALF THE HEIGHT OF THE FENCE AT ITS LOWEST POINT OR IS IS CAUSING THE FABRIC TO BULGE. TAKE CARE TO AVOID UNDERMINING THE FENCE DURING CLEAN OUT. AFTER THE CONTRIBUTING DRAINAGE AREA HAS BEEN STABILIZED, REMOVE THE FENCE AND SEDIMENT DEPOSITS, BRING THE DISTURBED AREA TO GRADE, AND STABILIZED. BUILDER'S EROSION CONTROL REQUIREMENTS General: 1. Nothing contained herein shall limit any contractual agreements or responsibilities individual builders may hove with the Developer. These requirements ore to be considered in conjunction with or in addition to said agreements. 2. The individual builder shall comply with the erosion control plan implemented by the Developer. Erosion Control Sequence: The following is the typical minimum erosion control sequence to be followed by individual builders constructing homes on each lot: 1. install silt fence along back of curb for the entire length of lot frontage on the public street prior to any land disturbing activity taking place on the lot. Maintain said silt fence until yard areas hove been stabilized with healthy and well rooted, permanent vegetation. (Refer to Practices 3.12, 3.14, and 3.74) 2. Install temporary stone construction entrance /exit pad per Practice 3.01. 3. Store and distribute stockpiled earth and topsoil per Practice 3.02. 4. Improve stone construction entrance drive by extending it to the garage slab or install permanent paved drive immediately after the building slabs have been poured and cured. 5. Limit vehicular traffic and parking to the above described stone drive and public street; except for material deliveries. 6. Remove accumulated mud from public streets (but not by flushing) with a rubber -tired front end loader and /or by brushing or sweeping. 7. After yard areas have been stabilized with healthy and well- rooted, permanent vegetation, remove the silt fence previously installed along the public street's back of curb. inspections: 1. An inspection log will be maintained which will indicate, at a minimum, the following items: a.) the time and date of inspection, b.) the inspector's name, c.) identified deficiencies and d) corrective measures taken to rectify said deficiencies. 2. The site shall be inspected at a minimum of once per week until all lots have been built upon and the entire project is deemed complete. 3. Silt traps shall be inspected at a minimum after a rain event of more than one half (1/2 inch accumulation. 4. Silt traps shall be replaced and silt basins shall be cleaned when less than 50% efficient; i.e., when the silt basin is half full and /or silt fences are not trapping silt effectively. 5. Developer will restore or replace damaged or improperly functioning erosion control facilities and /or system within o period of seven (7) days. 6. If, upon inspection by Developer, Builder has tracked mud onto street, Builder has one (1) day to remove accumulated mud. If Builder has not removed mud from the street within said time frame, Developer will remove the mud within the following 24 hours. EROSION CONTROL BLANKET Erosion control blanket shall be a machine produced mat of 100% agricultural straw. The blanket shall be of consistent thickness with the straw evenly distributed over the entire area of the mat. The blanket shall be covered on the top side with polypropylene netting having on approximate 5/8" X 5/8" mesh and on the bottom with a polypropylene netting with an approximate 1/4" X 1/4" mesh. The blanket shall be sewn together with cotton thread. Straw erosion control blanket (or low velocity channel lining) shall be S75 as manufactured by North American Green or equivalent. Erosion control blanket or channel lining shall have the following properties: a. Material Content: Straw 100% (0.5 lb per square yard)(0.27 kilogram per square meter) Netting One side lightweight photodegradable (1 lb per 1000 square feet approximate weight) One side heavyweight photodegradable (3 lb per 1000 square feet approximate weight) Thread Cotton b. Physical Specifications (Roll): Width Length Weight Area 6.5 feet (2 meters) 83.5 feet (25.4 meters) 30 lbs 10% (13.6 kilograms) 60 square yards (50 square meters) SITE PREPARATION 1. Smooth grade and compact all areas to be covered with mat. 2. Remove all rocks, dirt clods, grass clumps, trash and other obstructions that will lift mat from ground surface. ANCHOR TRENCHES 1. The mat must be anchored at the upstream and downstream ends of the protected area and intermittently in between. 2. Excavate end trenches to a minimum of 12 inches deep and 6 inches wide before placing mat. 3. Dig intermittent check slots 6 inches deep by 6 inches wide transverse to mat at approximately 25 foot intervals. Seeding Seed and fertilizer shall be spread uniformly before mat installation. Seed type, fertilizer type and rate of applications shall comply with seeding specifications. MAT PLACEMENT 1. Unroll mat flat side against the ground. Unroll mat in direction parallel with direction of water flow. 2. Mat should lay flat. DO NOT PULL MAT TAUT over ground. Pulling mat taut may cause mat to bridge depressions in the surface and allow erosion underneath. 3. Beginning at up or downstream end, bury transverse terminal end of the mat to secure and prevent erosion flow underneath. 4. Fold and secure mat snugly into all transverse check slots. 5. Backfill and compact trenches and check slots after staking the mat in bottom of trench (see Ground Fastening below). 6. Bury final terminal end as prescribed above. 7. Overlap roll ends by 3 feet (minimum) with upsiope mat on top to prevent uplift of mat end by water flow. 8. Overlap adjacent edges of mat by 3 inches (Minimum) and stake (see Ground Fastening below). GROUND FASTENING Metal pins or wood stakes are recommended for anchoring mat to the ground surface. Metal pins should be about 3/16 inch diameter steel with 1.5 inch diameter steel washer secured at head of pin. Wood stakes should be 1" X 3" nominal stock cut in a triangular shape. Stakes should be about 9 inches to 18 inches tong, depending on soil density. Longer anchors are required for loose soils. Note that ground fasteners different from those mentioned here may function adequately. Care must be taken to assure that fasteners hold mat securely at the surface and have sufficient ground penetration to resist pullout. 1. Stake mat to ground on 3 to 5 foot centers. Add extra stakes at depressions in ground surface where mat bridges over to assure ground conformity. 2. Drive wood stakes to within 3 inches of ground surface. Do not drive flush to surface. Steel or plastic pins should be driven flush to surface. 3. In all transverse terminol trenches and check slots, stake each mat at its center and at overlapped edges before backfilling and compacting. 4. Stake overlaps longitudinally at 3 foot intervals. SOIL GUARD 1. "Soil Guard" is a bonded fiber matrix erosion control system produced by Weyerhaeuser. <n c c a 0 C: a J ai co a C: C: a c t3 w C v O O f` 0 N on N N n M X a 1L 0) co 0 O h u7 N Liz 0 O 0 0 U) 0 c J 0 V J w H 1= I- I-- 0 -W 0¢ Z w z REVISIONS TUBE FILE H w w CO -C e-- e-- F- W SHEET NO.: DRAWING: 2308C803A DATE: 12/16/05 PROJ. NO.: 2308 DRAWN BY: dwp C803A