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Home My WebLink AboutSW3210302_Plansheet C.3 - Grading/Drainage Plan_20220823GRADING AND DRAINAGE NOTES 1. REFER TO THE GRADING AND DRAINAGE AND DETAILS FOR RELATED NOTES. 2. ALL ELEVATIONS ARE IN REFERENCE TO THE BENCHMARK OF SITE SURVEY BY HONEYCUTT LAND SURVEYING (828-464-0702). CONTRACTOR SHALL VERIFY THE BENCHMARK PRIOR TO GROUND BREAKING. 3. THE PROPOSED CONTOURS AND SPOT ELEVATIONS SHOWN WITHIN ROADWAYS, PARKING LOTS, AND SIDEWALK AREAS REFLECT FINISHED ELEVATIONS INCLUDING PAVEMENT, REFER TO PAVEMENT CROSS SECTION DATA TO ESTABLISH CORRECT SUBBASE OR AGGREGATE BASE COURSE ELEVATIONS TO BE COMPLETED UNDER THIS CONTRACT. 4. THE CONTRACTOR SHALL IMMEDIATELY REPORT TO OWNER ANY DISCREPANCIES FOUND BETWEEN ACTUAL FIELD CONDITIONS AND CONSTRUCTION DOCUMENTS AND SHALL WAIT FOR INSTRUCTION PRIOR TO PROCEEDING. 5. CONTRACTOR SHALL VERIFY LOCATION OF ALL EXISTING UTILITIES IN THE FIELD PRIOR TO BEGINNING CONSTRUCTION. 6. CONTRACTOR SHALL BLEND NEW EARTHWORK SMOOTHLY TO TRANSITION BACK TO EXISTING GRADE. 7. ALL FILL SHALL BE PLACED IN MAXIMUM 8-INCH LIFTS AND COMPACTED. ALL FILL WITHIN LIMITS OF BUILDING AND PAVEMENT AREAS SHALL BE COMPACTED TO 100% STD. PROCTOR DENSITY WITHIN THE TOP 24 INCHES AND A MINIMUM 98% STD. PROCTOR DENSITY BELOW 24-INCH DEPTH. FILL WITHIN LANDSCAPED AREAS SHALL BE COMPACTED TO MINIMUM 90% STD. PROCTOR DENSITY. 8. LIMITS OF DISTURBANCE SHOWN ON GRADING PLAN ARE BASED UPON THE APPROXIMATE CUT AND FILL SLOPE LIMITS, OR OTHER GRADING REQUIREMENTS. 9. CONTRACTOR SHALL ENSURE POSITIVE DRAINAGE SUCH THAT RUNOFF WILL DRAIN BY GRAVITY FLOW ACROSS NEW PAVEMENT AREAS TO NEW OR EXISTING DRAINAGE INLETS, OR SHEET OVERLAND. 10. ALL GRADED OR DISTURBED AREAS BEYOND THE LIMITS OF PAVING, SIDEWALKS, BUILDINGS, ETC. THAT ARE NOT OTHERWISE LANDSCAPED PER THE LANDSCAPING PLAN, SHALL BE STABILIZED WITH A NEW LAWN SEEDED IN ACCORDANCE WITH THE SEEDING SPECIFICATION ON THE SEEDING SHEET. CONTRACTOR SHALL MAINTAIN SEEDED AREAS UNTIL A HEALTHY STAND OF GRASS IS ESTABLISHED. 11. SHABELDEEN ENGINEERING, PA HAS NOT PERFORMED ANY GEOTECHICAL EVALUATIONS OF THE SUBJECT PROPERTY AND HAS NOT MADE ANY DETERMINATIONS AS TO THE SUITABILITY OF SITE SOILS FOR USE AS FILL BENEATH PROPOSED BUILDINGS, DRIVEWAYS, PARKING AREAS, OR FOR OTHER USES; NOR SLOPE STABILITY. ALL EARTHWORK SHALL BE COMPLETED IN ACCORDANCE WITH THE RECOMMENDATIONS OF A QUALIFIED GEOTECHINICAL ENGINEER WHO SHALL BE RETAINED BY THE OWNER. GENERAL NOTES 1. NO WETLANDS EXIST WITHIN THE PROJECT AREA 2. VEGETATION. THE FOLLOWING CRITERIA APPLY TO VEGETATION IN AND AROUND THE WET POND: 2.1. THE DAM STRUCTURE, INCLUDING FRONT AND BACK EMBANKMENT SLOPES, OF THE POND SHALL BE VEGETATED WITH NON -CLUMPING TURF GRASS; TREES AND WOODY SHRUBS SHALL NOT BE ALLOWED; AND 2.2. (B) THE VEGETATED SHELF SHALL BE PLANTED WITH A MINIMUM OF THREE DIVERSE SPECIES OF HERBACEOUS, NATIVE VEGETATION AT A MINIMUM DENSITY OF 50 PLANTS PER 200 SQUARE FEET OF SHELF AREA. 3. THE VEGETATIVE SHELF SHALL BE PLANTED WITH A MIX OF THE FOLLOWING: SPIREA, ITEA, SILKY DOGWOOD, AND SWAMP AZALEA. PD 1.9 (!DPD EQUIP. STORAGE-1 1.41 AC l l� l I I 1 1 I I P-13 p-12 / / / / I 959.80 o `/ / y / ( 965�96 / / / / / S-12 I I BUILDING 2 80 12,000 SF / o EQUIP. STORAGE-2 °' I I 1.21 AC rn I 150' rn °'6 I /' g58 / - -954- 957 g5� / I r / ' / / /EQUIP. ��b / l l -� S 57 / / STORAGE/ACCESS-3 // , / 9 2.85 AC / / I / / CO / / // / / / o 0) r/ // / / / / DROP INLET - SEE ROAD ALIGNMENT STATION -0+50.00 0+00.00 1 +00.00 m z m 95 0 G > O z W 90+50.00 5 �� 0+00 00 0+0 5 2 4 .00 0+5 .00 PROPOSED ROAD ALIGNMENT � �oqo -1.9 2.50% TRASH RACK 5 WEIR CREST 6" TEMP. POOL EL. 942.00 4' 2.5" ORIFICE PERM. P00� INV 940.00 EL. 940.00 36" HDPE PII INV 937.52 CONTROL STRUCTUI�L_ (cs-scm) NOTES: 1. PRE -CAST CONCRETE 4' X 4' PRE -CAST CONCRETE STRUCTURE (NCDOT STD. 840.31) 2. ALL PRE -CAST STRUCTURES SHALL MEET ALL APPLICABLE NCDOT STANDARDS. 3. HDPE SHALL BE ADS N-12 OR EQUAL INSTALLED PER MANUFACTURER'S RECOMMENDATIONS 10 Lo do Lo 0 (MAIN) V VIVVI\LIL ANTI -SEEP COLLAR � DETAI IZ 11 9� �r 4'x4' CONCRETE i SEE DETAIL /C8 ' 954= 1 + 0 / 9 3.7 11 I 4) �o9 S-2 ' / I /CURB INLET CATCH BASIN j ,c' � g I SEE DETAIL 10/C8 j co`ti S _ RIM 953.50 947.90 Q53.50 I rn+00 1 +ff0 p-9 3� p-3 \ \ \ \ SPILL �URBS-4 0)/ // � S-3� 9 3.80 \\ \ \ CO o 9 4.33 ' ' BLDG 1 \ \ \ 1 `� 13,000 SF J� Z N � M �r-��N o U LLl'-' °�MZ � U ao ao w w taw w 0 U o o cu In _ cu o L �w � ` o c: ! L o E N c U w U) U LC) O CD z W W U o � z � z 0- W 0 W 09 00 O UW o Q W \ - / P15 I I / °) / / l I // ' I �' i / TOP OF 4' BERM \ \ / / I \ / / �� ' 77�7- PID EL. 944.25L� S-5 1 h \� I / - / \ -6 s 953.60 / I I \ I \ \ \ I 9ss I \ \ I I RIM 95 O \ \ INV 94 o \ \ (_0 \ 9 `9 \ 9 \\9 O EOP it T EOP -s-- EAST MAIDEN RD (SR1855) - -- -- P/L ------------------------------------------------------------------------------ WET POND DIAGRAM (NTS) CROSS-SECTION B-B' 4' EL. 944.25 (TOP OF BERM) - 101' 4' - - - EL_941_00 (VEGETATED SHELF)_ 83'- - - 3 315� F ........... EL. 940.00 (PERMANENT POOL) - 71' - EL. 932_75 (BOTTOM) - 42' - VEGETATED SHELF - ? 7S� LOPS VEGETATED SHELF 6'; 6:1 SLOPE OAF Z�S 6'; 6:1 SLOPE MAIN POOL EL. 932.25 (SED. STORAGE) - 40' STRUCTURE &PIPE TABLE NAME DETAILS GRATE = 953.69 S-1 INV = 949.00 P-1 INV OUT = 949.00 GRATE = 953.50 INV = 947.92 S-2 P-1 INV IN = 947.92 P-2 INV OUT = 947.92 GRATE = 953.80 INV = 947.00 S-3 P-2 INV IN = 947.00 P-9 INV IN = 949.00 P-3 INV OUT = 947.00 GRATE = 954.09 INV = 946.50 S-4 P-3 INV IN = 946.50 P-10 INV IN = 946.50 P-4 INV OUT = 946.50 GRATE = 953.02 S-5 INV = 950.00 P-5 INV OUT = 950.00 GRATE = 953.50 INV = 949.39 S-6 P-5 INV IN = 949.39 P-6 INV OUT = 949.39 GRATE = 950.23 INV = 947.00 S-7 P-6 INV IN = 947.00 P-7 INV OUT = 947.00 GRATE = 949.87 INV = 943.50 S-8 P-7 INV IN = 945.10 P-4 INV IN = 943.50 P-8 INV OUT = 943.50 GRATE = 950.27 S-9 (JB) INV = 940.27 P-11 INV OUT = 946.56 P-10 INV OUT = 946.56 GRATE = 957.84 INV = 953.39 S-10 P-11 INV IN = 953.39 P-12 INV IN = 953.39 GRATE = 957.02 INV = 954.02 S-11 P-13 INV OUT = 954.02 P-12 INV OUT = 954.02 GRATE = 959.94 S-12 INV = 956.94 P-13 INV IN = 956.94 GRATE = 947.00 INV = 935.36 S-13 P-8 INV IN = 943.21 P-13.1 INV OUT = 935.36 0 40 80 Feet SCALE: 1 "=40' '4LLI 4-4 4 00 CL 09 < I, .I I, I. I O • i .. 4 ��11 -I--GI'��•seas�ri7sn�u�; �'j ' •� : : • 642 PROJECT NO. WET POND DIAGRAM (NTS CROSS-SECTION A -A' EL. 944.25 (TOP OF BERM) - 177' now ow 7 - 5' Depth 3• -EL 935_00--------EL_941.00 (TOP VEGETATED SHELF) - 149' - --------------- --------------------------------------------------------------- --- - --- - - S�OAF 2 3!� 6' 29 �------------- EL. 940.00 PERM.-PL OO_ 106------------------------------ - - OPF- ^5� s E.L. 932.75 (BOTTOM) - 77 VEGETATED SHELF 7' EL. 932.25 (SEDIMENT STORAGE) - 75' P� VEGETATED SHELF 6'; 6:1 SLOPE F WIDTH z_ 5,0' 6'; 6:1 SLOPE FOREBAY ENTRANCE SHALL FOREBAY BE 6" DEEPER THAN EXIT MAIN POOL Know what's below. Call before you dig. REVISIONS: NO. DATE: BY 1 5/6/22 DS 2 8/22/22 DS GRADING SHEET NO. c 3 OF 14