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CC - Drainage M 1 Q p I 00 - ... \ INDEX MAPQ � 0- I �tS�l 38.02 11"=250' C� N 37 .52 52 FG a� POND 2 / -� ■G� Z V100: 3,745 FT-3 z '3 Z C`► -- - CAPACITY: 6,658 FT�3 ! 9 APCAR I TOP OF BANK: 2537.62 100-YR HW LINE: 2537.12 s /�/�_ I r4' P ND 3 a SIDE SLOPES: 3H:1 V m �R POND TOE: 2535.72 V N � POND 3 PRIMARY BOTTOM OF POND/BSM LENS V100: 3,213 FT^3 W - ~ POND 1 PRIMARY ELEVATION: 2535.62 \ / CAPACITY: 5,298 FT�3 W BSM LENS AREA: 1,467 FT�2 \ //j I I� TOP OF BANK: 2538.02 111 CAPRI P ND 4 V100: 7,456 FT-3 / CAPACITY: 8,278 FT�3 MAX WATER DEPTH: 1.50 FT \ ///j 100-YR HW LINE: 2537.52 Z w TOP OF BANK: 2537.28 HIGHEST GW ELEV:2532.62 ///j N SIDE SLOPES: 3H:1 V ■� `M 100-YR HW LINE: 2536.78 SDMH 2: SDMH 2 �t///� BOTTOM OF POND: 2535.62 c Z w SIDE SLOPES: 3H:1 V ....... I BSM LENS AREA: 1,475 1 W a rn N RIM: i "1Fj•• MAX WATER DEPTH:1.90 FT POND 2Mgi11 o I I 00 BOTTOM OF POND: 2533.78 INV IN:2535.82 12"NE N HIGHEST GW: ±2532.62CO BSM LENS AREA: 1,690 FT 2 of 1 Q INV OUT:2535.82 12"SW i 6+I0 W U MAX WATER DEPTH:3.0 FT - o� O HIGHEST GW: ±2530.78 SUMP:2533.82 / �� , ^ w DCONSTRUCT 4 LF 12" SDR-35 ® 2.50%. - �I (FROM SDMH 2 TO POND 2) / / 1 J KEYNOTES INV ® POND: 2535.72 I n-I co S�ONAL F I� &( PROVIDE METAL END SECTION WITH TRASH RACK 14 & RIP RAP AT THE POND INLET. Quo �03/11/2022� 4 00 N I i � - 15 q� BERM: 2536.78 / » 12 SDR-35 00.44% .... ��N S. UT- START INV:2535.67 I'V-, A L,))END INV:2535.62.... 35. FG N O PL 18 LF OF 12" SDR-35 00.28% I a VARIES DAV DCHECKED A. BY:P.E. 3 .03 FG START INV:2533.83 L / / r: o 0 z a END INV:2533.78 � BERM: 2537.52 DRAWN BY: 38 G / / N. VARIES '- 3' MIN BD O 6 ISDMH 1 J VARIES iv �37,28 FG, POND 3 FOREBAY QQ' 7FT3 5.8 ............ V10 FT�3 CA SHOWN 0• 35 " / �,. J PACITY: 456 � 2 F 2" DRAIN ROCK SWALE AS POND 1 FOREBAY ...-...-...-...-... ...- 111:h..... ......d.l.... 2536 L- TOP OF BANK: 2538.02 I COVER 3.0 ft�3/ft V100: 828 FT^3 z _ 100 YR HW LINE: 2537.52 • CAPACITY: 1,057 FT 3 3 N I w w w TOP OF BANK: 2537.28 v - - 2539 - - SIDE SLOPES: 3H:1 V _ - ,:��; = NO SOD OVER 9 IIII - BOTTOM OF POND SLOPES: z - • '' o ao- SAND LENS 'S 100-YR HW LINE: 2536.78 14 ;i;:•'";'= N � IIII I I Pi Pi _ 2535.87-2535.67 SIDE SLOPES: 3H:1 V - Pi Pi """" _ W IIII I I MAX WATER DEPTH:1.85 FT o _ _ _ CREATE POSITIVE SLOPE OF ^� BOTTOM OF POND SLOPES: // 4� o - - IIII I I D HIGHEST GW: f2532.62 ----- 0.2% MIN TO SAND LENS � + 2534.03-2533.83 u z N IIII - - - O 2 _ IIII I i MAX WATER DEPTH:2.95 FT //// CONST. SAND LENS •-_-••-• FILTER FABRIC SIDES & TOP HIGHEST GW: ±2530.78 //// . F o a 0 STORM DRAIN POND1 0 STORM DRAIN POND2 /////� SDMH 3 w w w w SAND REQUIRED)RED) OF INFILTRATION WINDOW N PLAN VIEW PLAN VIEW //// \ EXCAVATE TO FREE - :--_-_ - N N SCALE: 1"=20' SCALE: 1"=20' /// o DRAINING MATERIALS _____ N o / o WHERE SAND LENS IS ....... I N //// ao SPECIFIED (LENS N Q N s I - SHOWN IN PLAN VIEW O c� N 2538, THIS SHEET). BACKFILL z z z O r7 PROVIDE INLET * WITH REJECT SAND OR z HYDROSEED FINISH MIX TO BE ACCORDING TO ///j EMBANKMENT AND DIVIDER THE ACHD STORMWATER MANAGEMENT BASIN //// -3/4" CRUSHED PROTECTION APRON & RIP 24~ BERM MATERIAL PER SOILS RAP PER ACHD SD-628 REVEGETATION GUIDANCE MANUAL" (OCTOBER //// GRAVEL w ENGINEER AND COMPACTION ® POND INLETS 2017) IN APPENDIX I BIORETENTION PLANTERS //// iv TO 95% REQUIRED PER SHALL BE LANDSCAPED ACCORDING TO ACHD'S > //// EAST INFILTRATION AASHTO T180 . ( ARMORED SPILL CHANNEL. " /f//�_ .... PLANT MATERIALS FOR BIORETENTION FACILITITES r 1 SEE DETAIL THIS SHEET. .; ...... / SWALE DETAIL `f FREEBOARD IN THE RIGHT-OF-WAY" _TI..I ...-...-...-...-...-...-... ...-...-...-...-...-...-. .-...-...-...-...-...-... IIII QSTORM DRAIN POND #3 -NTS- C° I- W.S. 100 YEAR LEVEL I ' PLAN VIEW z I- SIDE SLOPES AS I I I SCALE: 1"=20' 0 o SPECIFIED *HYDROSEED FINISH I- w `` I- EXCEPT FOR BSM w i LENS I I I- BOTH SPLITTER MANHOLES ARE TO BE 48" ID PRECAST PER ISPWC SD-611 W/ 2' SUMP Qi Li Cn INFLOW Q SLOPE 1% MIN I I DRAINAGE SDMH INV IN SDMH SDMH INV OUT PIPE LENGTH/SLOPE INV ® FOREBAY INV OUT PIPE LENGTH/SLOPE INV @ PRIMARY L LINE POND W/ 4" MIN To BSM LENS I I AREA RIM ELEV SUMP ELEV (TO FOREBAY) [SDMH TO FOREBAY] (TO PRIMARY) [SDMH TO PRIMARY] Q r TOP SOIL OR AMENDED j�j�j j�j�j�j�j�j�j�j�j�j�j� 1 2534.13 12" 2537.28 2532.13 2534.13 12" 12 LF 12" SDR-35 ® 0.83% 2534.03 12" 2534.33 12" 20 LF 12" SDR-35 ® 2.75% 2533.78 12" NATIVE MATERIAL MIN. 3' SEPARATION 3 2535.92 12" 2538.00 2533.92 2535.92 12" 6 LF 12" SDR-35 ® 0.83% 2535.87 12" 2536.12 12" 14 LF 12" SDR-35 ® 3.57% 2535.62 12" 0 IIIIIIIII-III I I I I FROM SEASONAL HIGH W BOTTOM OF BSM = MAX. EXCAVATION DEPTH WIDTH PER PLAN Qi WIDTH PER KEYNOTES r TYPICAL POND SECTION POND 2 TOOLED JOINT V C � GROUNDWATER WAS ENCOUNTERED IN (INFILTRATION BASIN TEST EXCAVATIONS - SEE INDIVIDUAL 1" BATTER 2 1/2" ASPHALT > 2' FLAT LANDING POND DETAILS FOR EXPECTED HIGH GW 2% 2% 4" OF 3/4" MINUS CRUSHED PER ACHD BMP 10) ELEVATIONS. _n 1.75% f.25% SLOPE 00 TAGGREGATE -NTS- J"_J NOTE: bx x x °" x x �. �h 71, Z 0 1. NOT USED. x ■<x x x ,a x x x p x 12 OF 6" MINUS PIT RUN (PARKING) xxx xpxx x x xp x x� xpx xx�xx x x xxx x �x x x x " 00 � x x ■x x x x x xxx x p x'k x xx V. x �x ASPHALT PAVEMENT � O O 2. GROUNDWATER WAS ENCOUNTERED IN TEST EXCAVATIONS ON THIS SITE. IF GROUNDWATER IS ENCOUNTERED HIGHER THAN INDICATED ON THE PLANS, �8 x o o x x x X x x oD o0 c J as x x x SLOPE PER PLAN PLACE 8" MIN. OF 3/4" MINUS o o THE CONTRACTOR SHALL NOTIFY THE ENGINEER IMMEDIATELY FOR REDESIGN TO PROVIDE 3 MINIMUM CLEARANCE BETWEEN GROUNDWATER AND THE x x Mx CHRUSHED AGGREGATE COMPACTED TO BOTTOM OF THE DRAINAGE FACILITY. UNTIMELY NOTIFICATION OF THE ENGINEER MAY RESULT IN ADDITIONAL COSTS TO THE CONTRACTOR. REFER TO x xxx EQUALIZATION W 95% DRY DENSITY. OVER COMPACTED GEOTECHNICAL ENGINEERING REPORT BY SITE CONSULTING, LLC, DATED 06/04/2014 AND UPDATED GROUNDWATER MONITORING REPORT DATED 2 OF 3/4 MINUS x BASIN SLOPE o �x x SUBGRADE. 10/28/2019. CRUSHED GRAVEL x x : x SEE PUMP 3. ALL MONITOR WELLS SHALL HAVE A CONCRETE APRON POURED AROUND THE CAP. yyyy STATION PLANS PARKING LOT 4 BLAST I (OR CONTRACTOR ORE) TO CREATE CONDU�ITTIOORTEST DRAINAGEORMED BY TO OCCUR. OILS TH S BLASTING ENGINEER NG (ORAFTER BORONG) WILL FULLY BE REQUIREDEXCAVATED. TOCONTRACTOR DESIGN INFILTRATION OF 5 IN/HR. IF THE PERCOLATION IS LESS THAN SPECIFIED BY THE SOILS REPORT AND ENGINEER (5"/HOUR) REDESIGN OF THE SYSTEM WILL BE NOTE:CROSS SLOPE SHALL NOT EXCEED Q GRAVEL ACCESS PAD SECTION 0 W REQUIRED. THICKENED EDGE SIDEWALK DETAIL 2.00% AT ANY SIDEWALK, HANDICAP NOT TO SCALE 5. COORDINATE W/ LANDSCAPE PLAN FOR VEGETATION. PARKING OR OTHER ACCESSIBLE ROUTE - TYPICAL SECTION 0 -NTS- THERE IS NO TOLERANCE ALLOWED ABOVE NOT TO SCALE I , I 2.00% W W LINING TO EXTEND TO TOP OF BANK & CENTER OF BERM (MIN) FREEBOARD o I I W.S. 100 YEAR LEVEL I I v SOD FINISH EXCEPT I I I , I 0 � I FOR BSM LENS W cn (BSM TO BE I- TOP OF BERM- <__ HYDROSEEDED*) PRIMARY ELEV PER PLAN 12" STAINLESS STEEL PIPE CAP J w Q 6" CLAY �' I EMBANKMENT AND DIVIDER WEDGE PRODUCT PART NUMBER W Q O I LINER 6015.S OR APPROVED EQUIVALENT. < BERM MATERIAL PER SOILS SECURELY ATTACH CAP TO PIPE. SLOPE 1% MIN SLOPE 1% MIN ENGINEER AND COMPACTION PROVIDE METAL SEE CUT-THROUGH DO NOT GLUE. CUT OPENING AS TO BSM LENS TO OUTLET TO 95% REQUIRED (PER SHOWN IN END END SECTION W/ DETAIL THIS SHEET TRASH AASHTO T180). POND PRIMARY CAPS 2" RACK & RIP RAP AT INLET I I I I I I I I CLAY LINER AS SPECIFIED SDR-35 OUTLET (FOREBAY ONLY) PIPE 10 Plans Are Accepted For Public PIPE SIZE & FLOW OPENING INV = VARIES, EXTEND 2' INTO PRIMARY BOTTOM FOREBAY BOTTOM Street Construction SLOPE PER PLAN PIPE INV FREE DRAINING MATERIAL. SLOPED 1% TO SLOPED 1% TO DATE: HIGHEST RECORDED GW INLET By stamping and signing the improvement plans, the Registered 02-25-2021 ELEVATION= VARIES BSM Engineer ensures the District that the plans conform to all District PROJECT' NOTE: """""""' PROVIDE TRASH POND FOREBAY policies and standards. Variances or waivers must be specifical- v previously pp v 9 p C2013-024 PROVIDE TRASH I and reviousl approved b the District in writing. Acceptance EXCAVATION OF PONDS IS TO OCCUR WITH A QUALIFIED TYPICAL POND SECTION FPONDS 1 & 31 BSM LENS:-:- RACK ® INLET 20 0 10 20 40 p p y SHEET GEOTECHNICAL ENGINEER AlPROJECT ENGINEER RACK & RIP of the improvement plans b the District does not relieve the / (PER ACHD BMPS 10&11) BIORETENTION SOIL MIX SPECIFICATIONS RAP ® OUTLET Registered Engineer of these responsibilities. ON-SITE. -NTS- 60% SAND FOREBAY/PRIMARY CUT-THROUGH DETAIL Q 20% SANDY LOAM (SILT, SAND, CLAY) -NTS- SCALE IN FEET BY DATE: 20% COMPOST 1"=20' ADA COUNTY HIGHWAY DISTRICT ---,/ 4o8 Q p S STANDARD FRAME AND GRATE PER " MONITORING WELL o A ACHD SD-610A LIP OF GUTTER 6 VERTICAL CURB MENEM Q � m PER ACHD SD-701 PER ACHD SD-627� v 00 o N STREET SLOPE SIDEWALK 1.75% f NOT TO SCALE J N 0.25% PER ACHD SD-709 L Z w 2' RING & COVER PER �� ~ MH RIM ELEV ISPWC SD-617 Z Z #4 EPDXY 1 2 5 ASPHALT BAR FINISH GRADE & GRAVEL Q — 'BYPASS' — ' KV SECTIONACK aINVERT OUT - 111— = C3 N C LU URB OF VERTICAL 1.42 TO PRIMARY W Z tz \j_S IDEWALK _ 3 3 W w PLAN CONCRETE COLLAR Z w U) c� JL - Z L co INVERT IN — INVERT OUT � 5 �18"� W � o 6" TYP. FROM CATCH TO FOREBAY W BASIN a 00 �_ a) cj cc 12" TYPICAL C-900 TO POND FOREBAY OR _ Q 8 V w 8" OR 12" C-900 PIPE TO SPLITTER MANHOLE AS LABELED N czn o C �g 3 ch o� Q m > SECTION B—B SECTION CONCRETE COLLAR �S\ONAL FNG 48" STORM o �� OUSTER NOT TO SCALE o O F SHALLOW INLET— ATTACHED WALK (SEE ACHD DRAIN MANHOLE PER 0 ISPWC SD-611 o a SD-715A FOR REFERENCE (NO CONE) MH SUMP ELEV 0� LEGEND: ` 0 3 1. WELL COVER, 8" DIAM. WATERTIGHT GALVANIZED 88 2 3 o STEEL COVER AND CANISTER. N� 7 8 NOT TO SCALE SEE INDIVIDUAL POND DETAILS ON o m 2. 2 OR 3 BOLT LID WITH ifs HEAD AND SAE y1>, SHEET 4.8 FOR MANHOLE ELEVATIONS W_ THREADS, GASKETED. /T F OF W- o a 4 3. CONCRETE (COLLAR), CLASS 3000 (ISPWC FV/N S. CAP\ w o a SECTION 703). P/L P/L a " o g 4. %"AT DIAMETER " ON CENTER.HOLES OR SLOTS CUT INTO PIPE Row 48'-0„ ROW PEDESTRIAN RAMP FOR ROLLED CURB _ a a CHECKED BY: z 5. TRACER WIRE SHALL BE PLACED ON OUTSIDE OF DAVID A. BAILEY P.E. NOT TO SCALE a 0 a PVC PIPE, MINIMUM 18 GAUGE, INSULATED, DRAWN BY: 7'-0" 4 34'-0" t 7'-0" wo o a SINGLE—CONDUCTOR COPPER WIRE, INSULATION BD NOTES o o COLOR SHALL BE GREEN WITH THREE 6 QQ RAMPS FOR CORNERS W/ MIN 15' RADIUS AND 0 0 DIAMETER COILS. UTILIZING ROLLED CURB ° ° 6. PIPE SHALL BE PERFORATED PVC, ASTM D-3035, —0'5'—O" 17'-0" 17'-0" 5'-0" '-0' 1'-0" MIN. FLAT LANDING ° ° SDR 35. WELLS BACKFILLED IN A PIT REQUIRE 1'-0" MIN. e RAMPS ARE CONTAINED WITHIN THE CURB RADIUS a o AT BACK OF WALK TYPE "H4" ♦ c RAMP DIMENSIONS 0 ° 6" PIPE. DRILLED WELLS MAY USE 4" PIPE. FLAT LANDING 15'-0" 15'-0" AT BACK OF SLOPE SIDEWALK 1.75% f CURB TYPE= STANDARD 3" ROLLED CURB PER o a 7. NONWOVEN FILTER FABRIC AROUND OPENINGS ISPWC SD-702 AND BOTTOM, FABRIC OVER CHIPS/DRAIN ROCK. WALK 0.25% PER ACHD SD 709 THROAT DEPTH= 4' FROM FACE OF CURB ' II 8. POLYPROPYLENE FIVER REINFORCEMENT AT 1 Xz z SLOPE 2.00% SLOPE 2.00% 4 THROAT WIDTH= 4' MIN 7 —8'�I LBS/CY. T WING= 3' TRAVERSABLE 9. BACKFILL MATERIAL TO MATCH STORAGE MEDIA o 4'T �0 0o WING= 1.5' NON TRAVERSABLE WELL SECTION FOR OBSERVATION WELLS LOCATED WITHIN A BMP 1 QQ RAMPS REQUIRE A MINIMUM 4'x4' LANDING IN FACILITY. USE PIPE BEDDING CHIPS FOR SIDEWALK © 1.5% + — 0.5% OBSERVATION WELLS LOCATED OUTSIDE BMP CL / (2% MAX SLOPE) FACILITIES. z 4" — 3/4" MINUS CRUSHED GRAVEL CL 5" THICK CONCRETE ® RAMPS SHALL NOT EXCEED 12:1 (8.3%) SLOPE F SIDEWALK (TYP.) TRAVERSABLE WINGS SHALL NOT EXCEED 10:1 NOTES: P 2 1 2" ASPHALT 4" — 3/4" MINUS CRUSHED (10%) SLOPE A. GOUNDWATER OBSERVATION WELLS ARE FOR < CL / � NON TRAVERSABLE AREA— PATTERNED � a � GRAVEL (COMPACTION REQUIRED) MEASUREMENT OF GROUNDWATER LEVELS WITHIN ,,, v) PAVEMENT (SP-3, CONCRETE\LANDSCAPED AREA OR NEAR STORM DRAINAGE FACILITIES. 0.50—INCH (1/2")Z! EXTEND GRAVEL AND PIT © 4'x4' FLAT STREET SIDE LANDING REQUIRED B. THIS DETAIL IS FOR WELLS INSTALLED BY o N MIX, PG 58-28 RUN 6" PAST CURB. (TYP.) QQ CURB IS NOT REQUIRED To BE FULL HEIGHT DRILLING OR BY EXCAVATED PITS. 0I N DETECTABLE WARNING PER ISPWC SD-712 C. LOCATION OF GROUNDWATER WELLS SHALL BE W a i STANDARD ROLLED N N 4 o CURB & GUTTER (TYP.) AS PER APPROVED BY ACHD N i D. OBSERVATION WELLS NOT ALLOWED IN CURB OR 48 RIGHT—OF—WAY ACHD SD-702 LEGEND VALLEY GUTTER SECTION. z ♦ 1.5%f0.5% (2% MAX SLOPE) TYPICAL STREET SECTION ♦ 7.3%f1.0% (8.3% MAX SLOPE) MONITOR WELL LOCATIONS NOT TO SCALE 9%f 1.0% (10% MAX SLOPE) 12" — 6" MINUS PIT RUN WELL # NORTH EAST LOCATION Lo 1 4581.58 7660.81 50' FROM POND J W r 1 2 4410.37 7619.89 50' FROM POND �J 3 1 4331.63 1 7668.16 1 50' FROM POND ROW SECTION 49.00' LINE 0 42.00' .00 Z 5.00' VARIES VARIES W n MIN 1' FLAT LANDING 1.50% 3.00' VARIES REQUIRED ON BOTH f 0.50% VARIES Q SIDES OF SIDEWALK VARIES no 6° 6' GRAVEL PROVIDE SECTION PER Z SHOULDER THIS SHEET OR MATCH V-6" EXISTING 2% EXISTING BLACK CAT Z 4.1 1 R D. SECTION — 4" OF —3/4" BASE �'���/���/��/��/\V��V��V� V� �' 0 5' WIDE 5" THICK CONCRETE SOD '���i���/�j//j WHICHEVER IS GREATER W _ W SIDEWALK (ACHD SD 709) `�� ��� C11 3 ASPHALTPAVEMENT SIDEWALK ELEVATION MUST BE 4" —3/4" AGGREGATE BASE — ±0.5' MCMILLAN CENTERLINE 72'x3' SAND INFILTRATION WINDOW 2' 3„ 26" —6" PIT RUN ��I� EXTEND 4 MINUS AND < / ALONG FRONTAGE. [REFER TO PITRUN 6" PAST CURB. SHEET 4.5-4.6, WHERE TO BREAK (TYP*) THE SAND LENSES TO 6" OF 3/4" Z Q 0 AVOID POWER POLES] MINUS SHOULDER (INFILTRATION WINDOW TO EXTEND GRAVEL SIDE SLOPES m A MIN. OF 2' INTO FREE DRAINING W J ONLY (THIS SIDE), MATERIAL PER DETAIL 8, ACHD SOD SIDE SLOPE DO NOT COVER SAND BORROW DITCH: SECTION 8200) WINDOW W ONLY (THIS SIDE), STORAGE VOLUME 9 CU.FT./LF DO NOT COVER SAND nI �/� INFILTRATION RATE 6 IN/HR WINDOW L.L �/ � TYPICAL MCMILLAN ROAD SECTION W NOT TO SCALE Q W W 0� >_ U (� W p W J � L Plans Are Accepted For Public � /) L p � Street Construction By stamping and signing the improvement plans, the Registered DATE: Engineer ensures the District that the plans conform to all District 02-25-2021 policies and standards. Variances or waivers must be specifical— PROJECT: ly and previously approved by the District in writing. Acceptance C2013-024 of the improvement plans by the District does not relieve the SHEET Registered Engineer of these responsibilities. BY DATE- ADA COUNTY HIGHWAY DISTRICT I ( 4e7D