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Home My WebLink Aboutpg 6Fog iR 5' MAX. WIRE SCREEN WRAPPED AROUND SANDBAGS BEYOND TO N0.57 STONE DIVERT WATER TO BOX ON SLOPES SECTION "A-An "MODIFIED" CATCH BASIN INLET PROTECTION SHEET NO. DWG. NO. EC .6 I OWG. BY PWC 1 OF 1 DATE JAN. 01, 2005 APPROVED BY J.E.G. NOTES: 1- INLET PROTECTION SHALL BE INSTALLED IN LOCATIONS AS INDICATED ON THE PLAN. 2. CONTRACTOR SHALL PERIODICALLY AND AFTER EACH RAINFALL EVENT REMOVE SEDIMENT AND OTHER DEBRIS FROM AROUND BASIN. 3. SANDBAGS SHALL BE INSTALLED ADJACENT TO INLETS ON SLOPES, SANDBAGS SHALL NOT BE INSTALLED ADJACENT TO BASINS IN LOW AREAS. PUBLIC WORKS COMMISSION FAYETTEVILLE, N.C. WATER RESOURCES ENGINEERING DEPARTMENT DATE I REVISION Slope Installation - Approximately 200 Staples per Roll (8' or 4' - AGGREGATE SIZE -USE 2 -3 INCH WASHED STONE 1. Place structural stone (Class B) be the lines and dimensions shown on the plan on a filterfabdc foundation. InstivetiOns EXCEL I I'" width) Required - Drawings Not to Scale V Figure E Amigo 2. Keep the center shine section at least 9 inches below the end where the dam abuts the channel banks. L= THE DISTANCE SUCH THAT A & B ARE OF Widefilanket Shown EQUAL ELEVATION WEIR 4. Provide an apron that is 3 what; the height of the dam. The apron width's at least 4 feet long. Underout A L B f- HEIGHT Figure C - 5. Extend the stone at least 1.5 feet beyond the ditch bank to keep water from cutting wound the ends of the check dam. Step 1 -Site Preparation " ea,•aa ''� ' Coronado x x x Prepare site to design profile and grade. Remove ;y"s 1 +-e �MINI'�� debris, rocks, clods, etc.. Ground surface should •;_ins - --� x x x be smooth prior to installation to ensure blanked needed. Houndog VEHICULAR ACCESS, STABILIZE remains in contact with slope. �� >..• :-;: Figure F Anticipate submergence and deposPoon above the check dam and erosion from high goys around the edges of SLOPES WITH MATERIAL SUITABLE Step 2- Seeding Crotmd . +z "-` r _° : Olympic Yam x x x x Seeding of site should be conducted to design Surface, v-q-`` ;„ s: r :'• be taken such as, installing a protective npmp liner in that portion of the channel _ requirements or to follow local or state seeding y`'; ^Q =a,' Fi Remove sediment accumulated behind the dams as needed to prevent damage to channel vegetation, allow the z x requirements as necessary. `, ,",..: =',t• FFigur'eE gure channel to drain thmugh the stone check dam, and prevent large flows from carrying sediment over the dam. A soil may require longer staples. Ste 3 - Staple Selection ' IIFI At a minimums, 6" long by 1" crown, D gauge staples -`F' , c Ground BASIN CONSTRUCTED are to be used to secure the blanket to the ground } .., '-' -' -' - ENTIRELY IN CUT, Figure D - Plan View surface. hstallazion in roc , sand m other loose ky y Figure soil may require longer staples. slopes and the upstream terminal end of the channel JII -I II II I II II- I I BASIN CAPACITY AND SOILS to serum the edges of the blanket. The trench should Step 4 - Excavate Anchor Trench and Secure ~�`: _i. _ r� M :•`�' +'^ 10 - -- Blanket DISCHARGE Excavae a trench along the top of the slope to secure Figure E Figure A x -omaa swtrt«.1m the upstream and of the blanket. The trench should AND GRADE VARIES I II -I - I 3:1 (DITCH) ®GRADE rush along the length of the installation, be 6' wide and 6' deep. Staple blanket along bottom of trench, fill with compacted soil overlap blanket towards toe in Mmkda ! -_ INTO POND (NO APRON) of slope and secure with row of staples (shown Figures A, E and F) slawiwa nt =roam r eraok «z ? _ Figure E - Plan View -nom sant"tmam Step 5 - Secure Body of Blanket v le Roll blanket down slope rom anchortrench S le Pe Slop Figure B - Profile View Figure C - Cross Section View crovnd set blanket underneath upstream blanket to from shingle of blanket following the pattern shown in Figure crowd litre pattern Staple seam as shown in Figure E. Seems tits D. Leave end of blanket ansta led to allow for D P Excel R -1 is produced by Western Excelsior and consists of a temporary Rolled Erosion Control 1 ;t ❑minimum staples to be used. More staple, maybe over) shown in Figure B. Place downstream 'p Figure B - Profile View Figure C -Cross Section View pholadegradable synthetic net (top). The expected longevity of Excel R 1 is approximately 12 u blanket underneath upstream blanket to from shingle resist mowers and foot traffic and to am= blanket is months (actual longevity dependent on field and climatic conditions). Excel R -1 is manufactured Product Application/Equivalency $purifications parent. Staple seam as shown in Figure E. Secure downstream blanket with stapling pattern shown N , W Figure a Stapling pattern shown in Figure D reflects Excel R -1 is produced by Western Excelsior and consists of a temporary Rolled Erosion Control innnum staples to be used. More staples be m P P may e Product (RECP) comprised of an excelsior matrix mechanically (stitch) bound m a single, Figure E required to amine blanket is sufficiently seared to Ph otode adable synthetic net m The expected longevity of Excel R -1 is approximately 12 gr Yn (top). xP g ty PPro Y 1 ` resist mowers and foot traffic and m ensure blanket is months (actual longevity, dependent on field and climatic conditions). Excel R -I is manufactured in contact with soil surface war the emhe area of to include physical properties sufficient m provide the intended longevity and performance. P Y P l>e pr g lY Pert Figure F - Profile View blanket. Further, critical points rary¢e additional staples. Critical points are identified in Figure G. Product specifications may be found on document WE EXCEL-RI-SPEC and performance cmi Fors edge- e- terminal edge. information may be found on document WE_EXCEL_Rl_PERF. All documents are available Step 6 - Continue Along Slope- Complete from Western Excelsior Technical Support or www.westemescelsior.com. Additional to above, cdumt ro , Installation equivalent products to Excel R -1 must meet identical criteria as Excel II as follows: Figure G - Critical Points Overlap adjacent blankets as shown in Figure C and I T__ .. repeat Step 5. Seems toe of slope using stapling 1. Consist of machine produced, weed and debris free excelsior bound to a angle, synthetic, rmwai em pattern shown in Figure E. Secure edges of photadegmdable net count Sa&ce installation by stapling at 101 intervals along the 2. Sufficient tensile strength, thickness and coverage to maintain integrity ty durin installation s,ara terminal edge. and ensure material performance. 3. Listing within AASHTO NTPEP database. Document a WE EXCEL RI SO 4. Meet ECTC specification for category 2C products. Figure G - Critical Point Securing 12" OF NCDOT NC OR NO 57 STONE CLASS B RIP RAP APRON LENGTH = DAM HEIGHTx3, 4' 1.5' MIN. I LU ax 1- �� w U 7 SECTION A -A FILTER FABRIC 12" OF NCOOT NC OR NO 57 STONE CLASS B RIP RAP APRON LENGTH = DAM HEIGHTx3, 4' 1.5' MIN. W g�F U 7 FILTER SECTION A -A FABRIC ROCK CHECK DAM DETAIL NTS PERMANENT SEEDING SPECIFICATION 1. All disturbed areas shall be dressed to typical sections and plowed to a depth of 5 inches. The top 2 Inches shall be pulverized to provide uniform seedbed. NOTE: Line should be applied with necessary equipment to give uniform distribution of these materials. The hand - bucket method is not acceptable. Lime and fertilizer should be incorporated Into the soil prior to 2 The following are rates and kinds of these materials to be applied PER ACRE: M RATES. Abruzzi Rye 5D lbs. Pensacola Bohiogross 50 lbs. Kentucky 31 Fescue 50 lbs. Korean Lespedezo 15 lbs. Common Bermudagross 25 Ibe. 10 -20-20 Fertilizer 500 lbs. Agricultural Limestone 4000 lbs. CONSTRUCTION SPECIFICATIONS - AGGREGATE SIZE -USE 2 -3 INCH WASHED STONE 1. Place structural stone (Class B) be the lines and dimensions shown on the plan on a filterfabdc foundation. Anthem Adventure The crest wkah of the dam should be a minimum of 2 feet Amigo 2. Keep the center shine section at least 9 inches below the end where the dam abuts the channel banks. L= THE DISTANCE SUCH THAT A & B ARE OF 3. Place sediment control stone (#5 or 957) on the upstream of the dam that is minimum of 1 foot thick EQUAL ELEVATION WEIR 4. Provide an apron that is 3 what; the height of the dam. The apron width's at least 4 feet long. Underout A L B f- HEIGHT the apron so that the top of the apron is flush with the surrounding aside. - 5. Extend the stone at least 1.5 feet beyond the ditch bank to keep water from cutting wound the ends of the check dam. Crossfire II Chesapeake 6. Excavate sediment storage area to the dimensions shown an the plan. Coronado MAINTENANCE pp inch e at Inspect dams and channel weekly and each 1 +-e �MINI'�� Genesis Finelawn Petite limbs, or could clog channel when other debits that c and repair immediately. Clean out sediment, stow, Ilmbs, or Omer debits mat eoukl ebg Nechannel d repair im sediment, --� MAY VARY TO PROVIDE Jaguar Grande needed. Houndog VEHICULAR ACCESS, STABILIZE MIN Kentucky 31 Anticipate submergence and deposPoon above the check dam and erosion from high goys around the edges of SLOPES WITH MATERIAL SUITABLE Pacer Montauk Mustang 9 Olympic Yam the dam. Cored all damage immediately. If significant emsion occurs between dam. additional measures can Rebel Phoenix Rebel Jr. FILTER be taken such as, installing a protective npmp liner in that portion of the channel _ Safari FABRIC Remove sediment accumulated behind the dams as needed to prevent damage to channel vegetation, allow the Figure D - Plan View Tomahawk Shenandoah Wolfpack Trailblazer Tempo Tribute channel to drain thmugh the stone check dam, and prevent large flows from carrying sediment over the dam. A soil may require longer staples. Add stones to dams as needed to maintain design height and cross section. 12" OF NCOOT NC OR NO 57 STONE CLASS B RIP RAP APRON LENGTH = DAM HEIGHTx3, 4' 1.5' MIN. W g�F U 7 FILTER SECTION A -A FABRIC ROCK CHECK DAM DETAIL NTS PERMANENT SEEDING SPECIFICATION 1. All disturbed areas shall be dressed to typical sections and plowed to a depth of 5 inches. The top 2 Inches shall be pulverized to provide uniform seedbed. NOTE: Line should be applied with necessary equipment to give uniform distribution of these materials. The hand - bucket method is not acceptable. Lime and fertilizer should be incorporated Into the soil prior to 2 The following are rates and kinds of these materials to be applied PER ACRE: M RATES. Abruzzi Rye 5D lbs. Pensacola Bohiogross 50 lbs. Kentucky 31 Fescue 50 lbs. Korean Lespedezo 15 lbs. Common Bermudagross 25 Ibe. 10 -20-20 Fertilizer 500 lbs. Agricultural Limestone 4000 lbs. CONSTRUCTION SPECIFICATIONS 1. Place structural stone (Class B) to the lines and dimensions shown on the plan on a fitter fabric foundation. The meat wklth of the dam should be a minimum of 2 feet. 2. Keep the center stone section at least 9 inches below the end where the dam abuts the channel banks. 3. piano sediment central stone (#5 or 057) on the upstream of the dam that is minimum of 1 foot thicit. 4. Povkte an apron that is 3 times the height of the dam. The apron width is at least 4 feet long. Undemut the apron so that the top of the apron is flush with the surrounding grade. 5. Extend the stone at least 1.5 feet beyond the d0ch bank to keep water from cutting around the ends of the check dam. 6. Excavate sediment storage area to the dimensions shown an the plan. MAINTENANCE Inspect check dams and channels at least weekly and after each significant (12 inch or greater) rainfall event and repair immediately. Clean out sediment, straw, limbs, or other debris that could clog the channel when needed. Anticipate +submergence and deposition above the check dam and eosion from high fkr s around the edges of the dam. Conect all damage immediately. If significant emsion occurs between dams, additional measures can betaken se. ch as, installing a protective Ingrain liner in that portion of the channel Remove smliment accumulated behind the dams as needed to prevent damage to channel vegetation, allow the channel to drain through the stone check dam, and prevent large flows from carrying sediment over the dam. Add stones to dams as needed to maintain design height and woss section. ROCK CHECK DAM WITH WEIR DETAIL N I'i RIPRAP ALL SLOPE'(IF ANY) TOE OF'OUTLET APRON \ FROM PIPE END TO PROTECTION FLUSH SOILS SUITABLE BOTTOM RIPRAP APRON WITH BASIN BOTTOM FOR INFILTRATION (PROVIDE DETAILED ON SITE SOILS REPORT) COMPACTED OIL MIN.`•` . SOIL 3' ,�� `r^�4 >�..i�tJ�: "yn�i•^,`s 18" MIN. ' �6' TYPICAL --1. TEMPORARY EARTHEN DIVERSION BERM COARSE 1- W TYPICAL TEMPORARY GRAVEL DIVERSION BERM INFILTRATION BASIN DETAIL NTS 3: 41 )Ti IL ` Channel Installation Approved Tall Fescue Cultivars: - AGGREGATE SIZE -USE 2 -3 INCH WASHED STONE Instructions EXCEL R -I " Anthem Adventure Adventure II Amigo wide Blanket Shown Figure F Figure B/ Austin Apache Apache II Arid 3. Ensure that the top of the dike is not lower at any point than the Chapel Hill Brookstone Bonanza Bonanza 11 Prepare site m design profile and grade. Remove Crossfire II Chesapeake Chieftain Coronado 1;0 � Falcon Debutante Duster Falcon SLOPE ABOVE POND HWL Genesis Finelawn Petite Finelawn Finelawn I MAY VARY TO PROVIDE Jaguar Grande Guardian Houndog VEHICULAR ACCESS, STABILIZE Monarch Jaguar 111 Kentucky 31 Kitty Hawk SLOPES WITH MATERIAL SUITABLE Pacer Montauk Mustang 9 Olympic Yam FOR SLOPE GRADE Rebel Phoenix Rebel Jr. Pixie Pyramid K _ �' Figure '•' ° �: �' _ _ _ - "�" Safari Rebel II Renegade Figure D - Plan View Tomahawk Shenandoah Wolfpack Trailblazer Tempo Tribute Titan Vegas II soil may require longer staples. IIFI Wrangler Step 4 - Excavate Anchor Trench and Secure c Ground BASIN CONSTRUCTED Fy y 1 - ENTIRELY IN CUT, - '•,••1: >° -" Surface _ NO FILL AREA ` slopes and the upstream terminal end of the channel JII -I II II I II II- I I BASIN CAPACITY AND SOILS to serum the edges of the blanket. The trench should I CAPABLE OF RETAINING 10 - -- - STORM WITH NO DISCHARGE - PIPE INLET. SIZE - - L . _ -_YEAR towards too of slope and secure with row ofsrsples AND GRADE VARIES I II -I - I 3:1 (DITCH) ®GRADE (shown in Figures A,E and 4 Mmkda ! -_ INTO POND (NO APRON) "N r-oenr an-rrnu a n rrr raru WAY 9 CONSTRUCTION SPECIFICATIONS 1. Place structural stone (Class B) to the lines and dimensions shown on the plan on a fitter fabric foundation. The meat wklth of the dam should be a minimum of 2 feet. 2. Keep the center stone section at least 9 inches below the end where the dam abuts the channel banks. 3. piano sediment central stone (#5 or 057) on the upstream of the dam that is minimum of 1 foot thicit. 4. Povkte an apron that is 3 times the height of the dam. The apron width is at least 4 feet long. Undemut the apron so that the top of the apron is flush with the surrounding grade. 5. Extend the stone at least 1.5 feet beyond the d0ch bank to keep water from cutting around the ends of the check dam. 6. Excavate sediment storage area to the dimensions shown an the plan. MAINTENANCE Inspect check dams and channels at least weekly and after each significant (12 inch or greater) rainfall event and repair immediately. Clean out sediment, straw, limbs, or other debris that could clog the channel when needed. Anticipate +submergence and deposition above the check dam and eosion from high fkr s around the edges of the dam. Conect all damage immediately. If significant emsion occurs between dams, additional measures can betaken se. ch as, installing a protective Ingrain liner in that portion of the channel Remove smliment accumulated behind the dams as needed to prevent damage to channel vegetation, allow the channel to drain through the stone check dam, and prevent large flows from carrying sediment over the dam. Add stones to dams as needed to maintain design height and woss section. ROCK CHECK DAM WITH WEIR DETAIL N I'i RIPRAP ALL SLOPE'(IF ANY) TOE OF'OUTLET APRON \ FROM PIPE END TO PROTECTION FLUSH SOILS SUITABLE BOTTOM RIPRAP APRON WITH BASIN BOTTOM FOR INFILTRATION (PROVIDE DETAILED ON SITE SOILS REPORT) COMPACTED OIL MIN.`•` . SOIL 3' ,�� `r^�4 >�..i�tJ�: "yn�i•^,`s 18" MIN. ' �6' TYPICAL --1. TEMPORARY EARTHEN DIVERSION BERM COARSE 1- W TYPICAL TEMPORARY GRAVEL DIVERSION BERM INFILTRATION BASIN DETAIL NTS 3: 41 )Ti IL ` Channel Installation "Approximately 300 Staples per Roll (8' or 4f Required Drawings Not to Sole W - AGGREGATE SIZE -USE 2 -3 INCH WASHED STONE Instructions EXCEL R -I " width) - objectionable material. �-v wide Blanket Shown Figure F Figure B/ WIDTH - 12 FT. MINIMUM OR FULL WIDTH AT ACCESS V Figure E 3. Ensure that the top of the dike is not lower at any point than the Step 1 - Site Preparation Figure C LOCATION - LOCATE CONSTRUCTION ENTRANCES AND Prepare site m design profile and grade. Remove Figure C and clea scut debris, tucks, clads, etc.. Limited surface should 1;0 � CONSTRUCTION VEHICLES. AVOID STEEP GRADES be smooth prior to installation to ensure blanket + ' rocket + in place less than 30 working days. remains in contact with slope. _ z z x I x Step 2 - Seeding :.y:'(�'.: + auM, «z _ _t:•: e j ;. z " x x x Seeding of site should be conducted to design remove sediment from the flow wets and repair the diverao, ridge. Carefully - CONTRACTOR SHALL SUPPLEMENT AND MAINTAIN GRAVEL requirements arm follow local wastes seeding . natural ground level and appropriately stabilize it. requirements as necessary. ' i : _ _ _ _ ,:v.r •' `. r • x x Step 3 - Staple Selection '- , ^ _ At a minimum, 6" long by 1" cows, I I gauge staples _ �' Figure '•' ° �: �' _ _ _ - "�" x - nmmswgera.am are in be used to secure the blanket m the ground °. main «a Figure D - Plan View surf ace. lnsWlationinrocky ,sandyarotherloose _'' *� "�•:'' _ soil may require longer staples. Step 4 - Excavate Anchor Trench and Secure c Ground Fy y 1 Blanket - '•,••1: >° -" Surface of the channel side Excavate a trench along the top nn slopes and the upstream terminal end of the channel Figure A x .nom savt"r�wm to serum the edges of the blanket. The trench should run along the length and width office installation, be 6" wide and 6" deep. Staple blanket along bottom of Saw ExasI trench, fill with compacted soil, ovedap blanket A� towards too of slope and secure with row ofsrsples ¢��)e Bmdecir etn,xaz W 1A,�I , Figure E - - (shown in Figures A,E and 4 Mmkda ! Plan View Step 5 - Secure Body of Blanket "N Roll blanket down slope from anchortrench. Staple arom a yam armed a d.I body of blanket following the pattern shown in Figure D. Leave end of blanket unstapled to allow for overlap shown in Figure B. Place downstream Figure B - Profile View Figure C - Cross Section View blanket underneath upstream blanket to from shingle V Product Application/Equivalency Specifications pattern Staple seam as shown in Figure E. Seems tits downstream blanket with stapling pattern shown in Figure D. Stapling pattern shown in Figure D mature. Excel R -1 is produced by Western Excelsior and consists of a temporary Rolled Erosion Control 1 ;t ❑minimum staples to be used. More staple, maybe Product (RECP) comprised of an excelsior matrix mechanically (stitch) bound to a single, Figure E required m ensure blanket is sutHciendy secured to pholadegradable synthetic net (top). The expected longevity of Excel R 1 is approximately 12 ,, resist mowers and foot traffic and to am= blanket is months (actual longevity dependent on field and climatic conditions). Excel R -1 is manufactured in contact with sail surface over the enthe area of to include physical properties sufficient to provide the intended longevity and performance. Figure F - Profile View blanket. Further, critical points require additional Pmduct specifications rosy be found on document WE EXCEL Rt SPEC and performance staples. Critical points are identified in Figure G. information may be found on document WE_ EXCEL PERF. All documents are available Step 6 - Continue Along Slope - Complete Installation _RI from Western Excelsior Technical Support or www.westemexcelsior.com. Additional to above, equivalent products to Excel R -1 must meet identical criteria as Excel R-1 as follows: crew mrsmrs sea mrsoya Overlap adjacent blankets as shown in Figure C and i. Consist of machine produced, weed and debris free excelsior bound to a single, synthetic, repeat Step S. Secure me of slope using stapling photodegradable set re mrsmrr patent shown in stapling E. Serum edges of fermi al stapling at 1.0' intervals along the 2. Sufficient tensile strength, thickness and coverage to maintain integrity during installation BntY g _ edge- e- terminal edge. r and ensure material performance. 3. Listing within AASHTO NTPEP database. Document#WE EXCEL RI CB - - - 4. Meet ECTC specification for category 2C product Figure G - Critical Points i - I T__ .. I Fertilizer used for topdressing on all roadway areas except slopes 2:1 and steeper shall be 10 -20-20 written approval of the Engineer, a different analysis of fertilizer may be used provided grade and shall be applied at the rate of 5DO pounds per acre (561 per hectare). Upon the 1 -2 -2 ratio Is maintained and the rate of application adjusted to provide the same amount of plant food as 10 -20 -20 analysis. Fertilizer used for topdressing on slopes 2:1 and steeper and waste and borrow weas shall be 16 -8-8 grade and shall be applied at the rote of 500 pounds pin acre (560 kg par hectare). Upon written approval of the Engineer, a different analysis of fertilizer may be used provided the 2 -1 -1 ratio Is maintained and the rote of application adjusted to provide the same amount of plant food as 16 -8 -8 analysis. March 1 - August 31 September 1 - February 28 51 (551 Tall Fescue 50# (551 Tall Fescue 2•ir# (2Bkg) Bermudogross (hulled) 35# (40kg) Sentrudogross (unhulled) 500# (51 Fertilizer 500$ (560109) Fertilizer 4000# (4500kg) Limestone 4000# (4,'iWkg) Limestone Slopes 21 and Steeper and Waste and Borrow Lomrtlons: March 1 - August 31 Septernber 1 - February 28 751 (85kg) Tall Fescue 75/1 (81 Tall Fescue 25# (281ag) Bermudagross (hulled) 35# (40kg) Bermudagraw ( unhulled) 500# (560kg) Fertilizer 500# (5601,9) Fertilizer 4000# (4500kg) Limestone 40001/ (4500kg) Limestone 6' EMERGENCY n. MIN.1 (IN STABLE SOIL) TOP OF BANK WhA NN41"Is EMBANKMENT STABILIZED WITH VEGETATION NATURAL GRO ND I x. r •,tw. •r •S.• i• =• 0 GRADE DESIGN CRITERIA CONSTRUCTION SPEC- .IFICATONS - AGGREGATE SIZE -USE 2 -3 INCH WASHED STONE I. Remove and properly dispose of all trees, brush, stumPe. an other objectionable material. DIMENSION OF GRAVEL PAD THICKNESS - 6 INCHES MINIMUM 2. Ensure that the minimum constructed cross section me.ets all design WIDTH - 12 FT. MINIMUM OR FULL WIDTH AT ACCESS requirements. POINTS OF THE VEHICULAR ENTRANCE AND DOT 3. Ensure that the top of the dike is not lower at any point than the AREA, WHICHEVER IS GREATER LENGTH - 50 FT. MINIMUM. design elevation plus the specified settlement. LOCATION - LOCATE CONSTRUCTION ENTRANCES AND 4. Provide sufficient room wound diversions to permit machine regrading EXITS TO LIMIT SEDIMENT FROM LEAVING THE SITE and clea scut AND TO PROVIDE FOR MAXIMUM UVUTY BY ALL 1;0 � CONSTRUCTION VEHICLES. AVOID STEEP GRADES S. Vegetate the ridge Immediately after construction, unless R will remain AND ENTRANCES AT CURVES IN PUBLIC ROADS. in place less than 30 working days. CONTRACTOR SHALL INSTALL ADDITIONAL GRAVEL LL CONSTRUCTION ENTRANCES NOT INDICATED ON THE PLANS MAINTENANCE REQUIRED FOR STAGING ANI BORROW AREAS AND Inspect temporary diversions once a week and after every ndnfoll. Immediately MAINTAIN AT NO ADDITIONAL EXPENSE TO THE OWNER remove sediment from the flow wets and repair the diverao, ridge. Carefully - CONTRACTOR SHALL SUPPLEMENT AND MAINTAIN GRAVEL check outlets and make timely repairs as needed. When III,. area protected is permanently stabilized. remove the ridge and the channel to blend with the CONSTRUCTION ENTRANCES AT HIS EXPENSE UNTIL FINAL natural ground level and appropriately stabilize it. ACCEPTANCE m TEMPORARY DIVERSION BERM DETAILS NTS THIS WORK SHALL CONSIST OF FURNISHING, PLACING MAINTAINING AND REMOVING A "GUTTERBUDDY' TYPE SEDIMENT CONTROL DEVICE AS DIRECTED BY THE ENGINEER AND AS SHOWN ON THE PLANS FOR A TYPICAL 2'1 CATCH BASIN, THE • GUTTERBUDDY' SHOULD BE PROVIDED WITH A MINIMUM LENGTH OF 8f. EACH END OF THE FILTER SOCK SHOULD BE SECURELY INSTALLED INTO THE BACK OF THE CATCH BASIN BETWEEN THE HOOD AND THE GRATE A MINIMUM OF 61 OFF EACH END OF THE FILTER SOCK SHOULD BE SECURED INTO THE CATCH BASIN IN THIS MANNER. CURB INLET mm mreuuur THE FILTER SOCK SHOULD BE INSPECTED AFTER EACH RUNOFF PRODUCING RAINFALL OR AT LEAST ONCE PER WEEK. IF THE INSPECTION SHOWS SILT AND DEBRIS BUILD UP ON OR AROUND THE FILTER SOCK, THEN THE FILTER SOCK SHALL BE CLEANED OR REMOVED AND REPLACED IF NECESSARY. LAST SAVED: 1/28/2013 3:54 PM LAST PLOTTED: 1/28/2013 3:56 PM PLOTTED BY: Ron Wiliam$ FILENAME: G: \CURRENT JOBS \WEAVER FRANK \10 - 1224 -01 THE SUMMIT - SECTION FOUR\ PLANS \DETAILS \MASTER- DLTAILS.DWG FILTER SOCK 'MODIFIED° INLET PROTECTION ••'VITERBUDDY'• NTS CONSTRUCTION SPECIFICATIONS 1. Infiltration basin shall be constructed level (at a 0 -0.05% grade). Do not construct a basin on a slope greater than 15 percent. Do not locate within fill soils. Do not construct basin in a location with less than 2 feet between the bottom of the infiltration basin and the seasonal high groundwater table, underlying Impervious soils, or bedrock (minimum 4 foot separation is recommended). Basin shall not be constructed if it causes water problems to downgradient properties. It must be a minimum of 15 feet down - gradient from structures, located a minimum of 100 feet horizontally from any water supply well, 50 feet from Class SA waters and 30 feet from any surface water. 2. Pretreatment device for removing sediment and solids must be used to protect infiltration devices from clogging. These pretreatment devices include filter strips, gmssed swales /ditches with check dams, concrete sumps and forebays (sediment traps). 3. If inlet flow is a concentrated source of discharge, an energy dissipater shall be used. 4. A site- specific hydrogeologic investigation shall be performed to establish the suitability of soils for the infiltration basin. Suitable soils must have an infiltration rate of 0.52 inches per hour or greater. 5. Sizing of infiltration basin shall meet the specifications set forth in the NCDENR Stormwater BMP Manual and must be able to completely dewater within 5 days. 6. The bottom of the infiltration basin most be lined with a layer of clean sand with a depth of 4 inches or greater, unless the native soil is equivalent (II fines or less). 7. Contractor shall use care during construction to minimize compaction of soil on the bottom and walls of the infiltration basin. light equipment and construction techniques that minimize compaction shag be used. 8. A minimum of one observation well shall be installed to periodically verify that the drainage media is fully draining. The monitoring well shall consist of a 4 to 6 inch diameter, perforated polyvinyl chloride (PVC) pipe with a locking cap. The well shall be placed near the center of the facility or in the general location of the lowest point within the facility, with the invert at the excavated bottom of the facility. OPERATION AND MAINTENANCE The drainage am shall be carefully managed to reduce the sediment load to the infiltration bas i n Immediately after the infiltration basin is established, the vegetation will be watered twice weekly if six weeks). No portion of the infiltration basin shall be fertilized after the initial fertilization required to establish needed until the plants become established (commonly x ) p tration b ha req "o in around the basin will be maintained at a height of approximately six inches. After the infiltration basin is established it shall be the vegetation. The vegetation n t and g g gh inspected once a quarter and within 24 hours after every storm event greater than 1.0 inches. Records of operation and maintenance shall be kept in a known set location and be available upon request Operation and Maintenance Provisions: 1. Remove any bash/debris if present from the entire BMP. 2. If any areas of bare soil and /or erosive gullies have formed around the perimeter of the infiltration basin, regrade the soil if necessary to remove the gully, then plant ground cover and provide a one time application of time and fertilizer and water until established. 3. Dispose of any sediment and unclog if applicable any inlet pipe or swale /ditch. If erosion is emoting in the swale /ditch regmde the Swale /ditch if necessary to smooth it over and provide erosion control devices such as reinforced turf matting or riprap to avoid future problems with erosion. 4. If sediment has accumulated in the forebay, (sediment trap) and reduced the depth to 75% of the original design depth, find the source of the sediment and remedy the source. Remove the sediment and dispose of where it will not impact any drainage area. If erosion has occurred or riprap is displaced, provide additional erosion protection such as reinforced turf matting or additional riprap to prevent future erosion. B weeds are present remove by hand if Possible or use a selective herbicide to prevent killing of preferred ground cover. 5. If a visible layer of sediment has accumulated in the main infiltration area, search for the source and remedy the problem. Remove the sediment and dispose of c n edits at was removed in the v r areas immediately. If water is standing more where it will not impact any drainage area. Replace any media that process and re egetate disturbed y g than 5 days after a storm, event, replace the top few inches of filter media and see if this corrects the problem. If so revegetate immediately, if not consult an appropriate professional for a more extensive repair. If weeds or noxious plants are growing, remove the plants by hand or wipe with herbicide (do not spray). 6. If the embankment has shrubs or trees sprouting or growing, remove immediately, if the embankment requires repair during an annual inspection by an appropriate professional, make all needed repairs. 7. B the outlet device has clogged or is damaged, clean and dispose of the sediment properly and repair or replace the outlet device. w�•ii'•lihiir•i ii•-ii !�•i�•i'i� "i i+�ii•i`ARVIkC.••+.,.• - • I • I �- -�. 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