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HomeMy WebLinkAboutCC - Drainage Improvement Plans �Sg\ONAL fN� 10821 — — s,10/4/22 0 NOl l 5: '>TF OF o 0 0 1 di I I 1 iHl`� BP11 MUoI RF PHC�FD )R C,r BY AC-iD AVD I' ON-Y ALIO [ VHFk- —�l SEPARATION `0 H`>;;.a IT NOT PC`SIB_E PMF' SHA_L ORLY BE ALLCA, 1) IV C,MIJON ARE 0 o V ;.I. 2- BMP 1 4 OR VFGCIATO FRETREATMFNT IS 2EQUFLD. 0 0 lIZ0 0 ,5 ( `WADI I)-SIGN L'R;)h FSSIODAI NOR `/NETTCAI DAN) FII1 R '-2h I)F SIGN F GN 01 JNI)IhAIFF IS FHCOUIJI-RL1) 41H MAx Iscw vAllov 4 41 L v'F,l.LTT, MAVI I F3, & `;AQD AND GRFA;I. TAPS SI-AI BI 11,2_- ;R GRFA F R I OAI; F.,;f D A A M Lk'Il'AL ,AND FILI LR SHALL EL SH tv. ')N F III 'LAN AND PRC II_ VIL WS w a 6 CPI JNAL CIANBE�J FER N KUFACIUf ERJ SP=UFI,'A 100_ 0 0 0 0 I-„ 7 ALL GEOTEXTI E SLAVES SHALL OVERLAP 1 FOOT MIVIIJUVI O O O O O ..I- 8. MAXIMI,M BED L-NA H IS 400—FT BETWEEN IVAN-IO_ES 9. BED WIDTH SHALL REMAIN CONS-ANT 11 1 IMP S AI I OWI D IN HI RI(HI �'.. )NIY IOF CAPHAL AND MAINTENANCE P40JECIS. z 1 / V -CR JF ICAI _ANT FL T_,, Iv a PI,H )F N,;' > 10 A MINIMUM 1.0 F COVFR FROM TOP OF PER C FAVLMLN I SUBC-ADL IS RLQU RL.i w O u I ' i BICKFLL OVER BO TO U33BADE KITH 6" 8" MIVCIS FITBUN � PLAN ADVFN GTOIFXIu- FA3HI. HFQJIRFI. .)V A 10) oI ELD N.T.S. --TOP of RFD JNDFR GID-r,AIH I-AI HF MIN I o-rI BF )Vi PAvFMFNI ;I,BGRADF I. 11. II < 1.0-11 COVL2 !HON 'OP QI BLD IO SUBG"2ADL, ANU AR "' '0 2" ROCK IS RSQUI'FLJ W'IIII MINIMUM 50% SINGL- FFACTJR-D FACE IN PACE OF DRAIN ROOK. F =F _ -.'I I '.. 12. FILL ROADWAY SEC-ION S REQUIRED OVER VFRTICAI SAND I If RS. VI 1211(,".I SAND I I.pl; SIIA,I NCI EXT-RD A3GV- ',I-ID, RAFE 13. -11L DC D PRO[ES IOVAL I, SOLELY RLSlO-H IBIF FOP F �,'VG -HE RFA3IOG RF hVC=TA OF TH= 1,�r �. SOGRADE SO LS AND DEIE M.VING 1HE DEPTI C- FOJNG TI"V STOVE 1' 1 =CR VE"-ICAL SAND FI_T=3S OUTSID= PUBL C R GI-T O 'NA": 1. A MINIMUM 1.5 F OOFR FROM TO OF aED C FtNISH CPA-,E Ii R OUIEED 1 1 i Ir SECTION A-A N.T.S. VE TICAI ANC) EII TER T VERTICAL- SAND FILTER -TANKARD DRAvSI�H cn J ac D <11 v �a LI L>IGN B IV P 21 EI�!� T1 JI,E_IN SHEET I OF 2 SHEET 2 OF 2 N w 00 Ho Z 2 Z F- LU Q w z �7 0 2 w oc Q 0 0 0 a � O � � LU w wLD w Q CD z Z — o 0 0 0 Z 0 km E N G I N E E R I N G U 5725 NORTH DISCOVERY WAY BOISE,IDAHO 83713 0 PHONE(208)639-6939 kmengllp.com DESIGN BY: MSD,IRW DRAWN BY: JRW 0 CHECKED BY: MSD U DATE: 9-22-22 PROJECT: 21-221 0 SHEET NO. C4.2 0 a z SHEET NOTES �' �' �' Q'X - ,p • 1. SEE SHEET C1.1 FOR GENERAL, ACHD, AND UTILITY SSYONAL E'YC a NOTES. r r i, r ,� V • 2. SEE SHEET C4.1 FOR STORM WATER DETAILS. V Y /�4 U y y 3. GROUNDWATER ELEVATIONS ARE LISTED IN TABLE 1 ON 082 DP2 140' of 18" PERFORATED PIPE ® 0.00% � VSF #1 z \� 4 19 SHEET C4.1. FOR ADDITIONAL GROUNDWATER J+ 10/4/22 0 INFORMATION AND WELL LOCATIONS, REFER TO THE �9p �p� A- O s F �3 '"GEOTECHNICAL RECOMMENDATIONS REPORT" PREPARED F�.X OF SD SD SD SD SGT#1 --L __ INLET #4 -' BY SITE CONSULTING LLC, DATED 7/11/2022. N p MCIvP� OW = +' �' RIM:2528.86 SGT 1000 � • LB RIM:2527.87 CONTRACTOR TO NOTIFY ENGINEER IMMEDIATELY IF SUMP:2522.98 / GROUND WATER IS ENCOUNTERED. THE SEEPAGE BEDS SD LSD SD INV IN:2524.83 12" (S) SUMP:2523.84 - f SHOULD BE EXTENDED INTO THE POORLY GRADED a SD INV IN:2525.84 12" (E) GRAVEL WITH SAND, WHICH SHOULD HAVE AN INV OUT:2523.98 12" (N) INV OUT:2525.84 12" (SW) 3 Q25: 2.22 CFS p INFILTRATION RATE OF 41N/HR OR GREATER. REFER TO �' 3.10 CFS 025: 1.23 CFS INLET #3 CB4 THE "GEOTECHNICAL RECOMMENDATIONS REPORT" z SD LSD SD gD Q100: 1.72 CFS - f RIM:2527.87 PREPARED BY SITE CONSULTING LLC, DATED 7/11/2022. OW DP1 10' of 12" PIPE ® 0.10% SUMP:2523.88 1 \ INV OUT:2525.88 12" (W) 4. PROVIDE WATER-TIGHT SEALS AT PIPING Q25: 0.58 CFS ENTRANCES/EXITS FOR MANHOLES AND CATCH BASINS. �r Fi -pi- PI -"I ,` P Pi • Q100: 0.81 CFS N 15' of 12" PIPE ® 0.10% DP1 SDMH B-1 • + MH RIM:2528.49 18 5. ALL STORM PIPE WITHIN ROW SHALL BE C900 WHERE M DP3 140' of 12" PERFORATED PIPE ® 0.00% SUMP:2523.83 COVER OVER PIPE IS LESS THAN 2 FEET. OUTSIDE OF o 0 INV IN:2525.83 12" (NE) ROW OR WHERE COVER IS GREATER THAN 2 FEET THE �'�- �'i O INV OUT:2525.83 12"' (S) 30' of 12" PIPE ® 0.10% DP1 STORM PIPE SHALL BE ADS N-12 HP PIPE OR n SDMH B-2 APPROVED EQUAL. FLOWABLE FILL SHALL BE USED WHEN LESS THAN 5-FEET OF SEPARATION BETWEEN m MH RIM:2528.72 -• STRUCTURES. s SUMP:2522.60 DP1 105' of 12"' PIPE ® 1.O8% z INV IN:2524.60 12" (N) `C •' 6. ALL DRAINAGE STRUCTURES SHALL BE PER ISPWC O - C INV OUT:2524.60 12" S z� O ° �.a � �• STANDARDS AND THE ACHD SUPPLEMENTS TO THE ISPWC. 4 = f INV OUT:2525.10 12" (SW)j \ STORM DRAIN STRUCTURES SHALL HAVE HS-25 TRAFFIC 35' of 12"' PIPE ® 3.65% DP1 3 Ls RATED LIDS UNLESS OTHERWISE SPECIFIED. 7. THE CONTRACTOR SHALL COMPLY WITH ALL THE N O �' 40' of 12" PIPE ® 0.10% DP1 REQUIREMENTS FOR STORM WATER DISCHARGE 0 DP3 125' of 12" PERFORATED PIPE ® 0.00% 3 w 'f / ASSOCIATED WITH CONSTRUCTION ACTIVITY. THIS INCLUDES N � y d 17 IMPLEMENTING THE BMP'S RECOMMENDED IN THE SWPP • p PLAN PREPARED FOR THIS SITE, REGULAR SITE w - 0 INSPECTIONS, DOCUMENTATION OF MODIFICATIONS TO THE SWPPP AND OTHER REQUIREMENTS AS SET FORTH IN OW THE NPDES GENERAL PERMIT. S 8. ALL CHANGES REQUIRE APPROVAL BY THE DESIGN • • • CB4 RIM 2527'98 SUMP:2523 95 W.LADLE RAPIDS ST. % INV IN:2525.95 12 (E) �' �s #2 VS gC SGT#2 ENGINEER AND ACHD. F R/w ..=R/W R/w R/w R/w RINV OUT:2525.95 12 (N)/ -a 3 RIM:2528.62 $GT 1000 9. THE CONTRACTOR SHALL PROVIDE AND INSTALL STORM Q25: 1.40 CFS' "a SUMP:2521.71 DRAIN MONUMENTS TO IDENTIFY ALL STORM DRAIN Q100: 1.94 CFS ` /w � INV IN:2524.56 12" (N) MANHOLES, SEDIMENT BOXES, DROP INLETS, AND OTHER INV OUT:2523.71 12" (S) PIPE JUNCTIONS OR TERMINUSES IN ACCORDANCE WITH W w w -w W DPI 30' of 12" PIPE ® 0.10% C - Q25: 1.66 CFS SECTION 8018 OF THE ACHD DEVELOPMENT POLICY � '✓ Q100: 2.31 CFS MANUAL AND ISPWC SD-623. O CB4 INLET #1 y0 � 3 � � I I hll I I z RIM:2527.98 % .i, _ SUMP:2523.98 90' of 12" PERFORATED PIPE ® 0.00% DP2 KEYNOTES s s- s s -INV OUT:2525.98 12" (W) z s - - 16 UTILITY MAIN/MAIN CROSSING Q1100:00Q25, M. CFS, ,i n MAINTAIN HORIZONTAL AND VERTICAL SEPARATION ' I15 CFS" 3. . s m OF THE POTABLE WATER AND NON-POTABLE S\ \ m/a x,/ PIPELINES (SEWER, STORM DRAIN, IRRIGATION, �� a x,/ M/alb 's. 10 • 7 AMENITY ETC.), PER CITY OF MERIDIAN �. z W ) C � REQUIREMENTS. SEE SEWER NOTE 2 AND WATER s ,�, ,� y OW i • NOTE 2, SHEET C1.1 FOR MORE INFORMATION. ' UTILITY MAIN/SERVICE CROSSING (A) SEEPAGE BED # MAINTAIN HORIZONTAL AND VERTICAL SEPARATION SD SD gD { f OF THE POTABLE WATER AND NON-POTABLE 0 30 60AMENITY, ETC.), PER CITY OF 90 - '" © PIPELINES (SEWER, STORM DRAIN, IRRIGATION, REQUIREMENTS. SEE SEWER NOTE1AN 31AND WATER Plan/Profile Scale:1"=30' - - NOTE 3, SHEET C1.1 FOR MORE INFORMATION. SEEPAGE BED #� � INSTALL INLET CATCH BASIN TYPE IV (FOR ROLLED CB4 CURB) PER ACHD SUPPLEMENTAL STANDARD z f DRAWING SD-604A. N INSTALL DOUBLE INLET CATCH BASIN TYPE IV (FOR Z 3 I 0 30 60 90 DCB ROLLED CURB) PER ACHD SUPPLEMENTAL Q O ~ > T I Plan/Profile Scale:1��=30' STANDARD DRAWING SD-604A. J to -s DP1 INSTALL 12" ADS N- N 12 HP POLYPROPYLENE PIPE. z LENGTH AND SLOPE AS LISTED ON PLANS INLET 5 � O Q CB4 RIM:2528.67 z INSTALL 18" PVC PERF PIPE PER ACHD POLICY ~ J SUMP:2524.67 a y SEEPAGE BED TABLE DP2 SECTION 8200, STORMWATER DESIGN MANUAL BMP O O Z d INV OUT:2526.67 12" (SE) p - m _ _ 21. LENGTH AND SLOPE AS LISTED ON PLANS. Z = W z Q25: 1.49 CFS BED LENGTH BED WIDTH AVG. BED 100-YR VOLUME DESIGN INFILTRATION Q100: 2.06 CFS s� f .'.,,• I SEEPAGE BED (FT) (FT) DEPTH (FT) ELEVATION "A" ELEVATION "B" ELEVATION "C" ELEVATION 'D' GROUND WATER EL. PROVIDED CF) RATE (IN HR) DP3 INSTALL 12" PVC PERF PIPE. Q W C ( / O LENGTH AND SLOPE AS LISTED ON PLANS. 0 c R/w-e/w LINED: 8.2 LINED:2523.98 O INSTALL SAND AND GREASE TRAP PER ISPWC - \ w �1 SB #1 139 3.5 2528.84 2527.34 2523.78 2523.78 5,890 4.0 $GT STANDARD DRAWING SD-624. SIZE IN GALLONS / > -R/w -� UNLINED: 30.2 UNLINED: 2525.45 + w _R/w 5 34 PER PLANS Z Q O w•gRq��q p w OW SB #2 84 LINED: 11.4 3.6 2528.62 2527.12 LINED: 2523.71 2523.54 2523.54 5,051 4.0 CONSTRUCT OBSERVATION WELLS PER ACHD 2017 Q _ R -mow__ / .. " UNLINED: 42 UNLINED: 2525.01 OW O STORMWATER DESIGN GUIDELINES SECTION 8200 ! 0 C w� STANDARD DRAWING BMP 20 AND ACHD r G 30' of 12" PIPE ® 3.28% DP1 LINED: 15 LINED: 2524.78 -+ SB 3 123 3.5 2530.48 2528.09 2524.57 2524.57 9,928 4.0 ------------ �" - � # UNLINED: 55.5 UNLINED: 2526.16 SUPPLEMENTAL STANDARD DRAWING SD-627. DP1 30' of 12' PIPE @ 0.10% INTERNAL WELL SHALL BE INSTALLED 5-FEET O - w � ss 1 -sue e GENERAL NOTES FROM THE END AND EDGE OF THE BED. OUTSIDE U W • - i- �,\ 130' of 18" PERFORATED PIPE ® 0.00% DP3 N LJJ Q A. GROUNDWATER IS EXPECTED TO REMAIN AT A DEPTH BETWEEN 5' TO 14' BELOW EXISTING GROUND. CONTRACTOR TO NOTIFY ENGINEER IMMEDIATELY IF WELL SHALL BE INSTALLED A MINIMUM 50' FROM C r n O GROUND WATER IS ENCOUNTERED. REFER TO THE "GEOTECHNICAL RECOMMENDATION REPORT" PREPARED BY SITE CONSULTING, LLC DATED 7/11/2022. THE PERIMETER OF THE BED. PLACE THE WELL w C �J z B. BEDROCK IS EXPECTED TO BE ENCOUNTERED AT DEPTHS GREATER THAN 14' BELOW EXISTING GROUND. REFER TO THE "GEOTECHNICAL RECOMMENDATION IN THE SIDEWALK FOR PROTECTION. THE PORTION Q Q SAS SD ` SD REPORT" PREPARED BY SITE CONSULTING, LLC DATED 7/11/2022. OF PIPE LYING IN DRAINAGE SAND MUST BE Z y „ .+. w C. ALL MANHOLES AND SAND AND GREASE TRAPS SHALL BE HS25 OR GREATER LOAD RATED. WRAPPED IN DRAINAGE GEOTEXTILE, TYPE I (ISPWC Mly D. ALL GEOTEXTILE SEAMS SHALL OVERLAP 1 FOOT MINIMUM. SECTION 2050 INLET #6 'i- .t/ A � � E. BED WIDTH SHALL REMAIN CONSTANT. Q DCB RIM:2528.68 SD SD SD F. IF ROCK IS ENCOUNTERED, CONTRACTOR MUST HAVE A PERCOLATION TEST PERFORMED BY A SOILS ENGINEER AFTER SEEPAGE BED IS FULLY EXCAVATED. CONSTRUCT VERTICAL SAND FILTER PER ACHD SUMP:2524.64 .,y n I .� y IF THE PERCOLATION IS LESS THAN SPECIFIED BY THE SOILS REPORT AND ENGINEER, CONTRACTOR MAY NEED TO BLAST OR BORE TO CREATE CONDUIT VSF POLICY SECTION 8200, STORMWATER DESIGN INV IN:2526.64 12" (NW) I FOR DRAINAGE TO OCCUR OR RE-DESIGN THE SYSTEM TO ACHIEVE THE REQUIRED INFILTRATION. MANUAL BMP 21. HIGH GROUNDWATER DATA G. STOINV OUT:2526.64 12" (S) " --LSD -SDI. I H. FORR AGE UND ROGRUOUND ME OINFILTRATONUDSYS EMDS,FINSTALL ELECTRONIC MARKERS ON EACH CORNER OF THE FACILITY. THE CONTRACTOR SHALL COORDINATE WITH OBTAINED FROM REPORT PREPARED . SITE Q25: 1.70 CFS ,i, .i. �, ,p THE ACHD INSPECTION DEPARTMENT FOR PLACEMENT OF THE MARKERS DURING CONSTRUCTION AND PRIOR TO BACKFILLING. CONSULTING, LLC DATED 7/11/2022. Q100: 2.38 CFS I I. CONTRACTOR SHALL VERIFY INFILTRATION RATE AFTER THE FACILITY IS FULLY EXCAVATED WITH THE ACHD INSPECTOR PRESENT. INSTALL STANDARD CONCRETE CATCH MANHOLE SD-T--r SD SD+ MH PER ACHD SUPPLEMENTAL STANDARD DRAWING SDMH C-1 MH SD-611. RIM:2530.89 i a OSUM P:2523.66 31 INV IN:2525.66 12" (N) S� A D SD OW INV OUL2526.16 18" (E) INV OUT:2525.66 12" (S) � DP1 30' of 12" PIPE ® 0.10% _ ____ _ ' - SGT#3 #3 V$F 130' of 18" PERFORATED PIPE ® 0.00% DP2 o RIM:2530.53 1500 SGT SUMP:2523.73 INV IN:2525.63 12" (N) INV OUT:2524.78 12" (S) Q25: 3.11 CFS ` c - '� Q100: 4.35 CFS o 0 t v _ o O _ P / EINGIN DEcERv I G BOISE,IDAHO 83713 PHONE(208)639-6939 kmengllp.com (k�lPAGE BED #3 DESIGN BY: MSD,IRW 30 60 9O DRAWN BY: RW O Plan/Profile Scale:1,=30' CHECKED BY: MSD U DATE: 9-22-22 PROJECT: 21-221 O SHEET NO. ILL C4.1 p a z