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Chief Joseph Elementary School Construction Plansi 10 20 40 •• Plan Scale LEGEND BOUNDARY LINE — OFFSITE BOUNDARY LINE — SETBACKS ROAD CENTERLINE LOT LINE LINE R/WR/W - RIGHT-OF-WAY LINE SECTION LINE 0 FOUND 1/2 INCH REBAR O FOUND 5/8 INCH REBAR PROPOSED IMPROVEMENTS ------s S SEWER LINE W W WATER LINE SD S® STORMDRAIN. LINE Pi Pi PRESSURE IRRIGATION LINE SEWER MANHOLE FIRE HYDRANT W W DOUBLE WATER SERVICE —�•- DRAINAGE ARROWS EXISTING IMPROVEMENTS SANITARY SEWER LINE ... --- ___._.. _. _ _ �.._.___... WATER LINE GAS LINE _._..___.__.m._....__.op .---- __...._.___O ._ _.w _: OVERHEAD POWER LINE CA - �� AGRAVITY IRRIGATION LINE SEWER MANHOLE fvv WATER VALVE WATER METER FIRE HYDRANT POWER POLE ® POWER BOX EP EDGE OF PAVEMENT -EG- ".,� Er- EDGE OF GRAVEL TREE DECIDUOUS -2645 EXISTING GRADE CONTOUR OSEPH ELEMENTARY SCHOOL WEST ADA SCHOOL DISTRICT CONSTRUCTION PLANS AUGUST 2017 2 x x x ..w.w.�....w"-rw.w.."^w".. F 15 I. w ..w . x x I 5 1 x 14 4 5 f 5 x 5 E _E w w.ww .1 5 5 2 TEMPORARY11 " 7 CLASSROOM 5 I 3 14 CB kD / I 12 I ; j 4 fd � V.. A SCHOOL A. 4 1� I 12 x 41 x 12 13 I 7 9 I I .4 x VICINITY MAP NO SCALE ONAL £� 1701 9� qTF OF \FW F. W a 0 V) W Lu Y= INDEX OF DRAWINGS 0 z z PRELIMINARY NOT 0 — KEYNOTES 0 # a FOR CONSTRUCTION SHEET SHEET TITLE 3. REMOVE EXISTING FENCE. J Z �-- C1.0 COVER SHEET AND DEMOLITION PLAN O Q C1.1 GRADING AND UTILITY PLAN O — Q 5. REMOVE EXISTING VEGETATION. C1.2 DETAILS _ - z oQ 6. PRESERVE AND PROTECT EXISTING IRRIGATION U Lu U >- Q Z O r <J H STRUCTURE. I— U m 0 ZQ � c G I— O W W PHONE (208) 639-6939 FAX (208) 639-6930 W 10. PRESERVE AND PROTECT EXISTING CURB AND GUTTER. 11. REMOVE EXISTING CURB AND GUTTER. DESIGN BY: AFN DRAWN BY: AFN w -� Q 12. LIMITS OF DISTURBANCE. SAWCUT EXISTING CONCRETE AND ASPHALT. Q O F- PROJECT: 17-134 = Q J w - W = �n w V = 14. RELOCATE EXISTING PRESSURE IRRIGATION SPRINKLER. V'1 U Z � O °C Ui W Q DC W O Q U - < CL U V) W CONTACT INFORMATION ENGINEERING CONSULTANT KM ENGINEERING, LLP 9233 WEST STATE STREET EAGLE, IDAHO 83714 PHONE: (208) 639-6939 FAX: (208) 639-6930 CONTACT: KEVIN MCCARTHY, P.E. EMAIL: kevin@kmengllp.com ACHD COMPLIANCE THE ENGINEER OF RECORD CERTIFIES THAT THE PLANS ARE PREPARED IN SUBSTANTIAL CONFORMANCE WITH THE ACHD POLICY AND STANDARDS IN EFFECT AT THE TIME OF PREPARATION. THE ENGINEER ACKNOWLEDGES THAT ACHD ASSUMES NO LIABILITY FOR ERRORS OR DEFICIENCIES IN THE DESIGN. ALL VARIANCES FROM ACHD POLICY SHALL BE APPROVED IN WRITING. THE FOLLOWING VARIANCES, LISTED BY DATE AND SHORT DESCRIPTION, WERE APPROVED FOR THE PROJECT: • NONE DRAWING STATUS: z PRELIMINARY NOT 0 — KEYNOTES 0 # 1. PRESERVE AND PROTECT EXISTING FIRE HYDRANT. 2. PRESERVE AND PROTECT EXISTING FENCE. FOR CONSTRUCTION U 3. REMOVE EXISTING FENCE. �-- 4. PRESERVE AND PROTECT EXISTING VEGETATION. 5. REMOVE EXISTING VEGETATION. O 6. PRESERVE AND PROTECT EXISTING IRRIGATION U STRUCTURE. 7. PRESERVE AND PROTECT EXISTING DRAINAGE r O STRUCTURE. ENGINEERS. SURVEYORS. PLANNERS LL 8. PRESERVE AND PROTECT EXISTING CONCRETE SIDEWALK. 9233 WEST STATE STREET BOISE, IDAHO 83714 I— O 9. REMOVE EXISTING SIDEWALK. PHONE (208) 639-6939 FAX (208) 639-6930 10. PRESERVE AND PROTECT EXISTING CURB AND GUTTER. 11. REMOVE EXISTING CURB AND GUTTER. DESIGN BY: AFN DRAWN BY: AFN CHECKED BY: KPM 12. LIMITS OF DISTURBANCE. SAWCUT EXISTING CONCRETE AND ASPHALT. Z DATE: 8-8-KPM PROJECT: 17-134 13. REMOVE EXISTING "HANDICAP PARKING" SIGNS. - SHEET NO. 14. RELOCATE EXISTING PRESSURE IRRIGATION SPRINKLER. ....� 15. PRESERVE AND PROTECT EXISTING GATE. C1.0� W uj z z 1� uj I. - z z 0 t5 D F_ V) z 0 11.75± 11.78± MA MA x x v X_ X_ x- x- X X X 11.66 X x x EP x X x x X 9 X X eel., 0 x "l 1. 6 fLy 1.5' 431111 51 x 7 4� 11.43 Q� INLET #1 - I ACHD SD -601, TYPE I _11.24. 4v RIM:2610.82 SUMP:2605.82 . . ........ x INV OUT:2607.82 12" (SE) F 77 E P 6.7' 12" ADS 0 lay_ -12 HP 0 1.00% N 3 3 -r -.k �'j 7-Z-�7�17 7- <�b x 'UN'MRS 0. co Vv HALF- P ER FO RATED,911-111 ADS N-12 HP 0 0.00% CB F �Q13 <% .86 A, 12.79 EP 11.80 12.52 EP A I 1.92 13.63± MA x 13.66± R MA )CB Lo gg� X 12.40 A 1,4 EP EP 110. 41 TEMPORARY CLASSROOM A 5,_ 4, Rq L X CB 11 1 CB 11.86± CB MA 4f 11.63± - M, 0 MA z ------ 4 RD 7 'Al '77 7 rRD4 77' 7;; 7/ 7 13.75± MA 13.66 13 4, O� if w- 00 x U) I M V) > o r U) r I- Al + i @ x @ Co > >< N 14.27 o -0 SCHOOL TOC x > + + 10 7 Mn A 14 rn 0 (n rn >< x (n a) 13.77 r ED TOC tQ m r m 13.82 A OTOA 0 13.94 00 b ilk 13 T 0 10 14.42± �j 4.14± 5.1% MA moo 4' 13.69± MA 12 13.82 x 1 12.29± 13.43± TOA 12 MA MA X" 13.94 Al TOC -4 A v A A x '4 A x E N L OF W F. Lu DRAWING STATUS: 0 10 20 40 60 0 PRELIMINARY NOT FOR CONSTRUCTION U Plan Scale z 0 Ill 1034311111" 0 ENGINEERS. SURVEYORS. PLANNERS LL 9233 WEST STATE STREET BOISE, IDAHO 83714 0 PHONE (208) 639-6939 z 0 FAX (208) 639-6930 DESIGN BY: AFN DRAWN BY: AFN CHECKED BY: KPIVI KEYNOTES DATE: 8-8-2017 PROJECT: 17-134 SHEET NO. .j uj 1. INSTALL ONE (1) 1000 GAL SAND AND GREASE TRAP CL ui (SGT -1) PER DETAIL SHEET C1.2. Lu I— RIM = 2611.06' (NW) cr_ RIM = 2611.23- (SE) INV IN = 2607.75' (NW) INV OUT = 2606.90' (SE) INLET BAFFLE = 2607.15' OUTLET BAFFLE = 2607.65' 2. INSTALL 40'xl5'x4' SEEPAGE BED (SB -1) PER BED DETAIL SHEET C1.2. CONTRACTOR TO DISREGARD 12" BYPASS PIPE NOTE ON DETAIL, NOT USED IN THE DESIGN FOR THIS SYSTEM. EXTEND DRAINAGE FACILITIES 1' (MIN.) INTO FREE DRAINING d MATERIAL. CONTRACTOR TO VERIFY SEEPAGE BED IS A Z MINIMUM OF 25' FROM ANY DOMESTIC WATER LINE. 3. INSTALL GROUND WATER OBSERVATION WELL PER DETAIL SHEET C1.2. MONITORING WELL SHALL CONFORM TO THE SPECIFICATIONS AND REQUIREMENTS PER ACHD STORMWATER DESIGN GUIDELINES 8200 DETAIL 6. THE PORTION OF THE PIPE LYING IN DRAINAGE SAND MUST BE WRAPPED IN A DRAINAGE GEOTEXTILE, TYPE I PER ISPWC SECTION 2060. OBSERVATION WELLS INSIDE SEEPAGE BED MUST EXTEND A MINIMUM OF 1' BELOW THE BOTTOM OF THE SAND AND MUST BE PLACED WITHIN THE SEEPAGE BED 5' FROM THE END. OUTSIDE OBSERVATION WELL MUST BE PLACED A MINIMUM OF 20' FROM THE PERIMETER OF THE BED AND IN THE SIDEWALK. 0 4. INSTALL 6" VERTICAL CURB AND GUTTER PER ACHD SUPPLEMENTAL STANDARD DRAWING SD -701. 5. INSTALL 6" REVERSE VERTICAL CURB AND GUTTER PER 0 Z DETAIL SHEET C1.2. �r 0 6. INSTALL 5.0' TRANSITION BETWEEN VERTICAL AND U uJ REVERSE FLOW CURB AND GUTTER. 7. INSTALL 5 WIDE ATTACHED CONCRETE SIDEWALK PER ACHD SUPPLEMENTAL STANDARD DRAWING SD -709. 8. INSTALL CONCRETE SIDEWALK PER ACHD u SUPPLEMENTAL STANDARD DRAWING SD -709. goo, < j uj r 9. INSTALL ASPHALT PATHWAY PER DETAIL SHEET C1.2. 5; D LLJ 10. INSTALL PEDESTRIAN RAMP WITH NO LANDING TYPE "G" uj a Z PER ISPWC SD -712G. INSTALL TRUNCATED DOMES PER < ACHD SUPPLEMENTAL STANDARD DRAWING SD -712. DOMES SHALL BE RIGID INSERTS WET -SET INTO THE W 0 0 (D CONCRETE (CONCRETE STAMP AND ADHESIVE MATS NOT 'TRAFFIC z ALLOWED) AND SHALL BE COLORED YELLOW . CL 0 CONTRACTOR To L MATCH WIDTH OF EXISTING SIDEWALK. UJI 'r (D a (/) u < z w 11. INSTALL ASPHALT ROADWAY SECTION PER DETAIL SHEET 0 Ln (D C1.2. < 12. SAWCUT (2' MINIMUM INTO EXISTING PAVEMENT) AND UL < PAVEMENT PATCH PER ISPWC SD -303 AND ACHD UJ REQUIREMENTS. < 13. CONTRACTOR SHALL RE -GRADE AND RE -SOD DISTURBED LANDSCAPE AREA. RELOCATE ALL EXISTING uj SPRINKLERS AFFECTED BY THE CONCRETE CURB AND SIDEWALK. 14. METAL ACCESSIBLE PARKING SIGN PER DETAIL SHEET C1.2. 15. 4 -INCH WIDE SOLID LINES AND HANDICAP SYMBOL PER ADA AND ACHD REQUIREMENTS. DRAWING STATUS: z 0 PRELIMINARY NOT FOR CONSTRUCTION U z 0 Ill 1034311111" 0 ENGINEERS. SURVEYORS. PLANNERS LL 9233 WEST STATE STREET BOISE, IDAHO 83714 0 PHONE (208) 639-6939 z FAX (208) 639-6930 DESIGN BY: AFN DRAWN BY: AFN CHECKED BY: KPIVI Z 2 DATE: 8-8-2017 PROJECT: 17-134 SHEET NO. .j uj w CL FINISH GRADE � 2 a) h 00 r .. •p.. .© p .p � gyp'. A ' 0 5 PLAN CONCRETE COLLAR N.T.S. Q I � I 0 Q 18" f� o 00 Li 4_1 }- 3 X ? W uj SECTION CONCRETE COLLAR > p a a N.T.S. a a = a � 1- 4 Ld a b a a g a a a a c 'c a a a a o a a a 7 8 SECTION - N.TS. 2015 ACHD REVISION FOR PUBLIC STANDARDS 'GROUNDWATER STANDARD DRAWING CONSTRUCTION OBSERVATION �IEI SD X27 (ACHD SUPPLEMENT) 1 OF 2 LEGEND WELL COVER, 8" DIA. WATERTIGHT GALVANIZED STEEL BOLT DOWN COVER AND CANISTER 2 OR 3 BOLT LID WITH 9/16" HEAD AND SAE THREADS, GASKETED T CONCRETE (COLLAR), CLASS 3000 (ISPWC SECTION 703) 04 3/8" DIA HOLES OR SLOTS CUT INTO PIPE AT 3" ON CENTER TRACER WIRE SHALL BE PLACED ON OUTSIDE OF PVC PIPE, MINIMUM 18 GAUGE, INSULATED, SINGLE - CONDUCTOR COPPER WIRE, INSULATION COLOR SHALL BE GREEN WITH THREE 6" DIAMETER COILS PIPE SHALL BE PERFORATED PVC, ASTM D-3035, SDR 35. WELLS BACKFILLED IN A PIT REQUIRE 6" PIPE. DRILLED WELLS MAY USE 4 PIPE NONWOVEN FILTER FABRIC AROUND OPENINGS AND BOTTOM, FABRIC OVER CHIPS/DRAIN ROCK U POLYPROPYLENE FIBER REINFORCEMENT AT 1 1/2 LBS/CY BACKFILL MATERIAL TO MATCH STORAGE MEDIA FOR OBSERVATION WELLS LOCATED WITHIN A BMP FACILITY. USE PIPE BEDDING CHIPS FOR OBSERVATION WELLS LOCATED OUTSIDE BMP FACILITIES NOTES: 1. GROUNDWATER OBSERVATION WELLS ARE FOR MEASUREMENT OF GROUNDWATER LEVELS WITHIN OR NEAR STORM DRAINAGE FACILITIES 2. THIS DETAIL IS FOR WELLS INSTALLED BY DRILLING OR BY EXCAVATED PITS 3. LOCATION OF GROUNDWATER OBSERVATION WELLS SHALL BE APPROVED BY ACHD 4. OBSERVATION WELLS NOT ALLOWED IN CURB OR VALLEY GUTTER SECTION 2015 ACHD REVISION RHPBLCNRS STANDARD DRAWING FOR GROUNDWATER CONSTRUCTION OBSERVATION WELL SD -627 (ACHD SUPPLEMENT) 2 OF 2 SEEPAGE BED TABLE SEEPAGE BED BED LENGTH BED WIDTH BED DEPTH ELEVATION A» „ ELEVATION B ELEVATION C ELEVATION D GROUND WATER EL. 100 -YR VOLUME PROVIDED SB -1 40.0' 15.0' 4.0' 2611.42' 2608.90' 2606.90' 2604.90' 2601.90'** 960 CIF SEEPAGE BED CALCULATION VALUES CONTRIBUTING AREA (SF) WEIGHTED RUNOFF COEFFICIENT (C) AVERAGE RAINFALL INTENSITY (in/hr) POST -DEVELOPMENT PEAK DISCHARGE (CFS) SEEPAGE BED VOLUME REQUIRED (W/ 15% SEDIMENT FACTOR) (CF) SAND AND GREASE TRAP VELOCITY (FPS) 10,371, 0.95 2.58 0.58 899 0.09 INLET NO TREES OR ROW 1 SHRUBS OVER BEDS. J Z z ELEV. - "A" ROADWAY � w �% I-` A (BETWEEN INLETS) O U - ELEV. - "C" cn W INLET VAN >- 3; Q 5 LF OF 18"0 °C 1_ 0.0 W 18"0 PERFORATED PIPE. INSTALL PERFORATIONS PER ACHD Q � J E- V ADS N-12 HP � 1= Q vi cn ww�il W _ 2.5" - ASPHALT PAVEMENT O 7. 3" - ASPHALT PAVEMENT gE Ci ISD SDI NON -WOVEN FABRIC PER ACHD STORMWATER DESIGN GUIDELINES - ---------� Q 1n ' =wcn 8wy 1,000 GALLON OR 1,500 GALLON 4 - MINUS 4 - MINUS Q a. C1.2 ----�-�-- = in SAND AND GREASE TRAP PER ---- E 10" -IMPORT BACK FILL OR APPROVED U (/) NATIVE MATERIAL. COMPACT AND 10" - 6" -MINUS PIT -RUN SUB -BASE DETAIL SHEET C2.7 PROOF ROLL SUBGRADE. (95 MIN PROCTOR COMPACTION) 1,-1 /2» ISD SDI ASPHALT PATHWAY SECTION ASPHALT ROADWAY SECTION 7E~A GENERAL NTS NTS 1. THE GEOTECHNICAL REPORT IS CURRENTLY BEING PREPARED. SEEPAGE BED DESIGN SHALL BE . a Q ADJUSTED BASED UPON THE GEOTECHNICAL RECOMMENDATIONS ONCE THEY ARE RECEIVED. 01- LENGTH VARIES, SEE TABLE THIS SHEET CONTRACTOR TO NOTIFY ENGINEER IMMEDIATELY IF GROUNDWATER IS ENCOUNTERED. 4 4. 4 w 18"0 PERFORATED ADS N-12 HP. PLAN VIEW TRANSITION 5' IN BED NON -PERFORATED TO 3. ALL VAULTS, MANHOLES AND SAND AND GREASE TRAPS SHALL BE HS25 OR GREATER LOAD RATED. PERFORATED PIPE 1,000 GALLON OR 1,500 GALLON SAND AND GREASE TRAP PER ALL GEOTEXTILE SEAMS SHALL OVERLAP 1 FOOT MINIMUM. WATERTIGHT CONNECTION 18"0 PERFORATED ADS FINISH GROUND DETAIL SHEET C2.7. SEE PLAN BED WIDTH SHALL REMAIN CONSTANT. N-12 HP 18" ADS CAP 6. SHEETS FOR LOCATIONS, ELEVATIONS, AND ADDITIONAL 7 IF ROCK IS ENCOUNTERED CONTRACTOR MUST HAVE A PERCOLATION TEST PERFORMED BY A INFORMATION. 0� SLOPE PROFILE VIEW 4 OF » CHIPS PIPE BEDDING 6"0 PVC PERFORATED PIPE (GROUND WATER OBSERVATION WELL). SEEPAGE BED (SB -1) -- ELEV. - "D" 3' MIN. j MAX. HSGW 1 OR ROCK ELEVATION 2 r__-_______ __ ________-_, � I ge � I ! I I t 1 t I 1 � L _ - _ ..... _ . _ . _ L L PLAN VIEW A SECTION A -A N.T.S. NOTES 1. SAND AND GREASE TRAP USED FOR SUBSURFACE FACILITIES ONLY LEGEND: (i)MANHOLE FRAME AND COVER PER SD -617 (TYPICAL) 2 LOCATION AND FL ELEV. PER DESIGN PLANS (TYPICAL) 3 H 1 -FT USE GRADE RINGS (TYPICAL) 1 -FT < H <= 2 -FT USE 24" DIA RCP RISER 2 -FT < H <= 10 -FT USE MANHOLE CONE &1 48" DIA RISERS O EL. A > EL. B BY 0.10' MIN EL. D < EL. B BY 0.10' MIN EL. C < EL. B BY 0.50' MIN. UNLESS OTHERWISE APPROVED BY ACHD WATERTIGHT SEAL PRECAST BOX MANUFACTURER SHALL MARK FLOW DIRECTION AND LABEL INLET OR OUTLET ON SIDE OF BOX 2015 SAND AND GREASE TRAP STANDARD DRAWING ACHD STORMWATER DESIGN GUIDELINES B M P 01 1 OF 2 W Q O 0 z NO TREES OR ROW 1 SHRUBS OVER BEDS. J Z z ELEV. - "A" (MIN) � w �% ELEV. _ „Bso co f O U - ELEV. - "C" cn W 1- ELEV. - "D" 3' MIN. j MAX. HSGW 1 OR ROCK ELEVATION 2 r__-_______ __ ________-_, � I ge � I ! I I t 1 t I 1 � L _ - _ ..... _ . _ . _ L L PLAN VIEW A SECTION A -A N.T.S. NOTES 1. SAND AND GREASE TRAP USED FOR SUBSURFACE FACILITIES ONLY LEGEND: (i)MANHOLE FRAME AND COVER PER SD -617 (TYPICAL) 2 LOCATION AND FL ELEV. PER DESIGN PLANS (TYPICAL) 3 H 1 -FT USE GRADE RINGS (TYPICAL) 1 -FT < H <= 2 -FT USE 24" DIA RCP RISER 2 -FT < H <= 10 -FT USE MANHOLE CONE &1 48" DIA RISERS O EL. A > EL. B BY 0.10' MIN EL. D < EL. B BY 0.10' MIN EL. C < EL. B BY 0.50' MIN. UNLESS OTHERWISE APPROVED BY ACHD WATERTIGHT SEAL PRECAST BOX MANUFACTURER SHALL MARK FLOW DIRECTION AND LABEL INLET OR OUTLET ON SIDE OF BOX 2015 SAND AND GREASE TRAP STANDARD DRAWING ACHD STORMWATER DESIGN GUIDELINES B M P 01 1 OF 2 W Q O 0 z NTS 0 - ROW W J Z O W Q <C � w O p Z _- O U - �■���� cn W 1- VAN >- 3; Q ACCESSIBLE °C 1_ 0.0 W 18"0 PERFORATED PIPE. INSTALL PERFORATIONS PER ACHD Q � J E- V co � 1= Q METAL ACCESSIBLE PARKING SIGN W _ NTS KEY Q ROW W H O W - n � w FOR CONSTRUCTION Lu �o p O = ANGULAR J" TO 2" ROCK. � 0.0 W 18"0 PERFORATED PIPE. INSTALL PERFORATIONS PER ACHD U cn V � ENGINEERING O o V) LL 2.5" - ASPHALT PAVEMENT O 7. 3" - ASPHALT PAVEMENT < Ci DESIGN BY: AFN 8. NON -WOVEN FABRIC PER ACHD STORMWATER DESIGN GUIDELINES Q 1n SECTION 8200 DETAIL BMP 20. OVERLAP MINIMUM OF 1 -FT TOP AND 4 - MINUS 4 - MINUS Q a. C1.2 GRAVEL BASE COURSE (NO SLAG) GRAVEL BASE COURSE (NO SLAG) = » R=3.5 ---- E 10" -IMPORT BACK FILL OR APPROVED U (/) NATIVE MATERIAL. COMPACT AND 10" - 6" -MINUS PIT -RUN SUB -BASE W PROOF ROLL SUBGRADE. (95 MIN PROCTOR COMPACTION) 1,-1 /2» ASPHALT PATHWAY SECTION ASPHALT ROADWAY SECTION GENERAL NTS NTS 1. THE GEOTECHNICAL REPORT IS CURRENTLY BEING PREPARED. SEEPAGE BED DESIGN SHALL BE ' SOILS ENGINEER AFTER SEEPAGE BED IS FULLY EXCAVATED. (NOTE: AN ACHD INSPECTOR MUST BE {' HIt� �KtI�AIt CSHJ PRESENT FOR THE TEST), IF THE PERCOLATION IS LESS THAN SPECIFIED BY THE SOILS REPORT t WIDTH VARIES j AND ENGINEER, CONTRACTOR MAY NEED TO BLAST OR BORE TO CREATE CONDUIT FOR DRAINAGE SEE TABLE THIS SHEET y ,. TO OCCUR OR RE -DESIGN THE SYSTEM TO ACHIEVE THE REQUIRED INFILTRATION. REVERSE VERTICAL CURB & GUTTER `% ��j �. h ' 8. WATER AND SEWER SERVICES CROSSING SEEPAGE BED SHALL BE SLEEVED PER OPTION 2 OF ACHD STORMWATER DESIGN GUIDELINES I SECTION 8200 DETAIL 12. NTS 6 9. STORAGE VOLUME DOESN'T INCLUDE SAND WINDOW. 10. FOR UNDERGROUND INFILTRATION SYSTEMS, INSTALL ELECTRONIC MARKERS ON EACH CORNER OF THE FACILITY. THE CONTRACTOR SHALL COORDINATE WITH THE ACHD INSPECTION DEPARTMENT FOR PLACEMENT OF THE MARKERS DURING CONSTRUCTION AND PRIOR TO BACKFILLING. SECTION VIEW A -A 11. INFILTRATION RATE USED FOR DESIGN WAS 8 IN/HR. SEE GEOTECHNICAL REPORT BY KLEINFELDER, INC. DATED MARCH 7, 2005 FOR ADDITIONAL INFORMATION. fTER KEY Q ROW 1. CURB AND GUTTER PER ROADWAY PLANS. O 2. 1.5' FILTER SAND, ISPWC 801 OR ASTM C33 FILTER SAND. FOR CONSTRUCTION 3. MINIMUM OF 2' COVER FROM TOP OF BED TO FINISH GRADE. 29_O" BACKFILL WITH NATIVE TOPSOIL. 4. ANGULAR J" TO 2" ROCK. Z 5. 18"0 PERFORATED PIPE. INSTALL PERFORATIONS PER ACHD U STORMWATER DESIGN GUIDELINES DETAIL BMP 20. 6" 1'-6" ENGINEERING O 6. EXTEND 2' (MIN.) INTO FREE DRAINING MATERIAL. LL 9233 WEST STATE STREET BOISE, IDAHO 83714 O 7. 10' WIDE SIDEWALK PER ROADWAY PLANS. DESIGN BY: AFN 8. NON -WOVEN FABRIC PER ACHD STORMWATER DESIGN GUIDELINES Q DATE: 8-8-2017 SECTION 8200 DETAIL BMP 20. OVERLAP MINIMUM OF 1 -FT TOP AND SHEET NO. % C1.2 SIDES ONLY. 53/x" » R=3.5 9. FULL ROADWAY GRAVEL SECTION IS REQUIRED OVER SEEPAGE BEDS. VARIESSEEPAGE BEDS SHALL NOT EXTEND ABOVE SUBGRADE. N wcn it � 1,-1 /2» GENERAL NOTES 1. THE GEOTECHNICAL REPORT IS CURRENTLY BEING PREPARED. SEEPAGE BED DESIGN SHALL BE . a Q ADJUSTED BASED UPON THE GEOTECHNICAL RECOMMENDATIONS ONCE THEY ARE RECEIVED. 01- CONTRACTOR TO NOTIFY ENGINEER IMMEDIATELY IF GROUNDWATER IS ENCOUNTERED. 4 4. 4 w 2, CONTACT DESIGN ENGINEER FOR SEEPAGE BED REDESIGN IF GROUNDWATER IS ENCOUNTERED 2" N ABOVE MAX HSGW ELEVATION. 3. ALL VAULTS, MANHOLES AND SAND AND GREASE TRAPS SHALL BE HS25 OR GREATER LOAD RATED. 4. ALL GEOTEXTILE SEAMS SHALL OVERLAP 1 FOOT MINIMUM. 5. BED WIDTH SHALL REMAIN CONSTANT. 6. THE MINIMUM DESIGN PERCOLATION RATE. FOR THE STORM DRAIN. FACILITY IS 8.0 IN/HR TO MEET THE REQUIREMENT OF 90% VOLUME WITHIN 48HR AND SHALL BE VERIFIED IN FIELD. 7 IF ROCK IS ENCOUNTERED CONTRACTOR MUST HAVE A PERCOLATION TEST PERFORMED BY A ' SOILS ENGINEER AFTER SEEPAGE BED IS FULLY EXCAVATED. (NOTE: AN ACHD INSPECTOR MUST BE {' HIt� �KtI�AIt CSHJ PRESENT FOR THE TEST), IF THE PERCOLATION IS LESS THAN SPECIFIED BY THE SOILS REPORT t WIDTH VARIES j AND ENGINEER, CONTRACTOR MAY NEED TO BLAST OR BORE TO CREATE CONDUIT FOR DRAINAGE SEE TABLE THIS SHEET y ,. TO OCCUR OR RE -DESIGN THE SYSTEM TO ACHIEVE THE REQUIRED INFILTRATION. REVERSE VERTICAL CURB & GUTTER `% ��j �. h ' 8. WATER AND SEWER SERVICES CROSSING SEEPAGE BED SHALL BE SLEEVED PER OPTION 2 OF ACHD STORMWATER DESIGN GUIDELINES I SECTION 8200 DETAIL 12. NTS 6 9. STORAGE VOLUME DOESN'T INCLUDE SAND WINDOW. 10. FOR UNDERGROUND INFILTRATION SYSTEMS, INSTALL ELECTRONIC MARKERS ON EACH CORNER OF THE FACILITY. THE CONTRACTOR SHALL COORDINATE WITH THE ACHD INSPECTION DEPARTMENT FOR PLACEMENT OF THE MARKERS DURING CONSTRUCTION AND PRIOR TO BACKFILLING. SECTION VIEW A -A 11. INFILTRATION RATE USED FOR DESIGN WAS 8 IN/HR. SEE GEOTECHNICAL REPORT BY KLEINFELDER, INC. DATED MARCH 7, 2005 FOR ADDITIONAL INFORMATION. fTER DRAWING STATUS: Z O PRELIMINARY NOT - FOR CONSTRUCTION U Z O U ENGINEERING O ENGINEERS. SURVEYORS. PLANNERS LL 9233 WEST STATE STREET BOISE, IDAHO 83714 O PHONE (208) 639-6939 FAX (208) 639-6930 DESIGN BY: AFN DRAWN BY: AFN CHECKED BY: KPM Q DATE: 8-8-2017 PROJECT: 17-134 SHEET NO. C1.2 w Inc