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Home My WebLink About20200276 Ver 1_Overlook at Mt Vernon Ph 3-Impact Maps-2020.02.10 (2)_202002194 Owe L nDo � q ZPH7ASE ARBOR R lib! M. VERNON CRQSSIN1.a Pt Z 4- 7 itM0LNT VERA1QN CROSSING PHASE 1 & 2 TAILORS 4%'OODG u d LIB I 2 1< �. fur; o, 91 DEER TPAIL TI-If -CATES AT ETHAW GLEN. 0 0 T Lu Q d erg l . II:I BANS UP it W E C 2019 Microsoft9or oration C 201 1ERE V t-.r'-q i�Dift 9& 457 _ -` • `• 1\ 1 1 I 1 1 ' 1 1 ------1-----_ ,STREET � I PHASE 3 Tom, 1 \ % `/ T' Fiq , NUESE RIPARIAN BUFFER (TYP) IMPACT LOCATION1�I ej STREAM TOP OF BANK I ` PHASE 1 & 2 / IMPACT JUSTIFICATION STATEMENT PROPERTY INFO THE PURPOSE OF THIS PROPOSED BUFFER AND STREAM IMPACT IS TO INSTALL INFRASTRUCTURE NECESSARY TO SUPPORT THE CONSTRUCTION PROPERTY DEVELOPER: MARQUIS HOMES & COMPANY OF A NEW RESIDENTIAL SUBDIVISION IN WAKE COUNTY. DUE TO THE LOCATION OF THE EXISTING STREAM AND THE REMOTE LOCATION OF THIS 8368 SIX FORKS ROAD PORTION OF THE DEVELOPMENT, IMPACT AVOIDANCE CANNOT BE ACHIEVED BUT WILL BE MINIMIZED TO THE MOST PRACTICAL EXTENT POSSIBLE. RALEIGH, NC 27615 ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH WAKE COUNTY, NCDEQ AND USACOE APPLICABLE STANDARDS AND SPECIFICATIONS. PIN: 0891-02-5319 & 0891-12-2200 SITE ACREAGE: 30.11 AC / 1,311,507 SF GRAPHIC SCALE GRAPHIC SCALE 1000 0 500 1000 2000 10 0 5 10 20 1 inch = 1000 ft. 1 inch = 10 ft. E U Q Q � �O � J � maa X w O w z � U � -) 5; � Z � w \I - GENERAL NOTE: / / / I \ / / / / 355 Jo mo _ 355 W _i� aIF CONSTRUCTION CANNOT BE COMPLETED \ / \ _ / <oM �M WITHIN 3 WORKING DAYS, BYPASS PUMP METHOD / / / \ o / ` / / / / / z+M +"' .i l` l l IW¢z ¢z SHALL BE INSTALLED AS SHOWN. SEE EXHIBIT 3. / / �Ll / I \ OPkN SPACE/ I \ /� — / / `� / 350 0 350 v = \ \ / N j '3 �52LF54"RCP @1.54% / 9 --� \\ \'� // I / INIHE >z rp p u NRB 50 \ / N c° o` u 350 uo HMIT-OF_QONSTnCTTIOh-�, _ / / / 345 345 a I ` NRB---` — _ P LIMIT OF CO�f SFRU�TION \ / �� / / ^ \ \ / / / ,` BURY PIPE 12" BELOW SILT FENCE (TYP) \ \ \ ` ✓ / / / STREAM BED DEWATERING PUMP \ — — — _ _ J , / 5199UF E IST. 340 V LOCITY 54" RCP G OU D 340 �R� ✓ SEDIMENT FILTER BAG_ \1�/ NRB 345 \ — / IDID \ ` _ UPSTREAM \ / \ ` \�_ / — Q �\\PERVIOUS DAM //• — , — — \ f ' ZO ` — \�Li All 335 335 Co a u L I / X -DOWNSTREAM PUMP AROUND PUMP s / d Z O OPEN -SPACE = W IMPERVIOUS DAM — �VETLA - / _ o \ \� \I 9+50 10+00 10+50 11+00 w30 NE 50' NEUSE O Q /.SILTFENCE (TYP)\\\� \ �� 1 E1 mZO( CULVERT PROFILE ^ —RIPARIAN BUF�ER/ _ SCALE H: 1 "=50' w Z . V: 1 "=5' _ J \ R \il l l 11 l 11 II I �/ '@ \ NI ONE 2 SILT FENCE (TYP) JJ- \\�EN XCE PROFILE VIEW Q a c 1\ \ _ - GRAPHIC SCALE z 7/� J� _360�\\�\\�\\ \Fi,� I _ _ - �i / 1" = 50' HORZ. p O 1"=5' VERT. w w _30'-NEUSE \�\\\\ ��\\ \ \ _ ��=-'� o O z > `�RIPAR ��FF`1`R \ \� ��\\\\\\\—\—~ ~ p o PRELIMINARY \ NOT FOR RECORDING OR CONSTRUCTION o a AREA OF PERMANENT IMPACT 1 - CULVERT Q NEUSE RIPARIAN BUFFER ZONE 1: 4,862 SF Q NEUSE RIPARIAN BUFFER ZONE 2: 2,717 SF NEUSE RIPARIAN BUFFER TOTAL: 7,579 SF PERMANENT STREAM IMPACT 1 LENGTH: 77 LF AREA OF TEMPORARY IMPACT 2 - DISSIPATER PAD Q NEUSE RIPARIAN BUFFER ZONE 1: 949 SF NEUSE RIPARIAN BUFFER TOTAL: 949 SF TEMPORARY STREAM IMPACT 2 LENGTH: 31 LF PLAN VIEW GRAPHIC SCALE 50 0 25 50 100 1 inch = 50 Ft. I - PUMP AROUND PUMP TEMPORARY CONSTRUCTION STREAM CROSSING x M x PROPOSED EARTH BERM (TYP) _\ w PROPOSED EARTH BERM, TYP FLOW �> 12' MIN 5' MIN POLYETHYLENE FABRIC ON FACE (8 MIL THICK) CLASS "I" RIP -RAP \ � '12' MIS FROM PUMP A TOP OF BANK TO PUMP- STREAM FLOW => A I'\ \.a. ' 1i '"I r` IA EX STREAM BOTTOM STREAM FLOW PUMP CLASS "I" RIP -RAP J DEWATERING PUMP J %+— FLOW CONSTRUCTION EASEMENT (SEE NOTE 4) NOTES: 1. EROSION STONE TO BE "CLASS I" RIP -RAP UNLESS DESIGNATED DIFFERENTLY ON CONSTRUCTION PLAN. 2. PUMP AND LINE SIZE TO BE DETERMINED BY THE CONTRACTOR. 3. WIDTH OF CONSTRUCTION EASEMENT SHALL BE MINIMIZED BASED UPON FIELD CONDITIONS. ANY DISTRUBANCE(S) EXCEEDING WHAT IS SHOWN ON PLANS MAY REQUIRE ADDITIONAL WATER QUALITY PERMITTING. SEDIMENT BAG J PLAN PROPOSED EARTH BERM, TYP MAINTENANCE NOTES: 1. INSPECT WEEKLY AND AFTER EACH RAINFALL EVENT THAT PRODUCES 1 INCH OR MORE OF RAIN. 2. REMOVE SEDIMENT AND WOODY DEBRIS PROMPTLY. 3. REMOVE COLLECTED SEDIMENT FROM STONEIRIPRAP AREAS AS NECESSARY. TOPDRESS WITH 2", WASHED STONE AS NECESSARY. GEOTEXTILE FABRIC 6" MIN SEDIMENT VARIES FILTER BAG 24" MIN 10' MIN SILT FENCE SILT FENCE EXISTING GROUND LINE TEMPORARY STONE DAM POLYETHYLENE FABRIC ON FACE (8 MIL THICK) TEMPORARY STREAM CROSSING BYPASS SEDIMENT FILTER BAG NOT TO SCALE SEWN -IN CONNECTION SLEEVE FOR PUMP DISCHARGE HOSE 24" MIN SILT FENCE 6" MIN COVER #57 STONE PAD WITH GEOTEXTILE FABRIC 24" MIN #57 STONE POLYETHYLENE SHEETING (6 MIL MIN) VARIES WITH ROUND SLOPE USE #57 STONE TO — POLYETHYLENE SHEETING \ ' LEVEL BAG FROM \ NATURAL GROUND LINE SIDE VIEW TOP VIEW VARIABLE (10' MIN.) OPTIONAL LIFTING STRAPS VARIES WITH GROUND LINE SLOPE SEDIMENT FILTER BAG NOT TO SCALE MAINTENANCE NOTES: CONSTRUCTION SEQUENCE 1. INSTALL PUMPS UPSTREAM OF TEMPORARY STREAM CROSSING AND PUMP TO AREA DOWNSTREAM OF CONSTRUCTION AREA. BEGIN PUMPING AND CONTINUE PUMPING WHILE WORKING WITHIN THE STREAM. 2. INSTALL UPSTREAM DAM AND DOWNSTREAM DAM WITH POLYETHYLENE FACING. 3. INSTALL EARTH BERMS ALONG TOP OF BANK ON EACH SIDE OF STREAM IN THE CONSTRUCTION AREA. 4. INSTALL SEDIMENT FILTER BAG AT TOP OF BANK. DEWATER CONSTRUCTION AREA BETWEEN STONE DAM USING THE FILTER BAG. 5. INSTALL THE NEW CULVERT AND CROSSING 6. UPON CONSTRUCTION COMPLETION, REMOVE TEMPORARY DAMS, POLYETHYLENE, AND TEMPORARY CMP, DEPRESS TEMPORARY DAM BOTTOMS INTO STREAM BED UNTIL TOP OF RIP RAP IS LEVEL WITH STREAM BOTTOM. 7. REMOVE TEMPORARY EARTH BERM AND SEDIMENT BAGS AND STABILIZE AREAS AS INDICATED ON DRAWINGS. 1. INSPECT WEEKLY AND AFTER EACH RAINFALL EVENT PRODUCING 1 INCH OR MORE OF RAIN. ANY DAMAGE TO THE SEDIMENT FILTER BAG SHALL BE REPAIRED IMMEDIATELY. 2. TEMPORARY SEDIMENT FILTER BAG SHALL BE REPLACED WHEN 6" OF SEDIMENT HAS ACCUMULATED OR IN ACCORDANCE WITH THE MANUFACTURER'S RECOMMENDATIONS. 3. MONITOR SEDIMENT FILTER BAG REGULARLY FOR THE PRESENCE OF TURBID WATER BEING DISCHARGED. IF ANY TURBID WATER IS BEING DISCHARGED FROM THE BAG THE SITUATION SHALL BE RESOLVED IMMEDIATELY. IF TEMPORARY BLOCKAGES ARE NOT FOUND, ASSUME THE BAG IS AT SEDIMENT CAPACITY AND REPLACE IMMEDIATELY. NOTES: 1. CONTRACTOR SHALL EXERCISE CAUTION NOT TO BURST OR DAMAGE THE TEMPORARY SEDIMENT FILTER BAG WHEN PUMPING. 2. THE LENGTH AND WIDTH OF THE TEMPORARY SEDIMENT BAG SHOWN ON THIS DRAWING MAYVARY PER VENDOR SPECIFICATIONS. 3. TEMPORARY SEDIMENT FILTER BAGS SHALL BE EQUIPPED WITH A SEWN -IN SLEEVE OF SUFFICIENT SIZE TO ACCEPT A MINIMUM FOUR -INCH DIAMETER PUMP DISCHARGE HOSE. THE DISCHARGE HOSE SHOULD BE EXTENDED INTO THIS SLEEVE A MINIMUM OF SIX INCHES AND BE TIGHTLY SECURED WITH A HOSE CLAMP OR OTHER SUITABLE MEANS TO PREVENT LEAKAGE. HOSE CONNECTION THROUGH A SLIT IN THE BAG WILL NOT BE ACCEPTABLE. 4. THE PUMP DISCHARGE HOSE CONNECTION SLEEVE SHALL BE SECURELY TIED OFF DURING DISPOSAL OF THE TEMPORARY SEDIMENT FILTER BAG IN ORDER TO PREVENT LEAKAGE OF COLLECTED SEDIMENTS. 5. TEMPORARY SEDIMENT FILTER BAG SHALL BE REPLACED WHEN 6 INCHES OF SEDIMENT HAS ACCUMULATED OR IN ACCORDANCE WITH THE MANUFACTURER'S RECOMMENDATIONS. 6. CONTRACTOR SHALL SIZE THE BAG DEPENDING ON USE AND FLOW REQUIREMENTS. Ln J Q 11.I r) E