LOI Exhibit B - Conceptual Drawings of SHS-Related Drainage — File 207949

30 30 30 40 50 6 60 34 36 38 42 44 46 48 52 54 56 58 62 62 64 64 66 66 68 D D D D D D D UD MW-36.4 UD SCHOOL ST MBTA ROW (TYP.) NIP COMMUNITY PATH (TYP.) SEE DP06 UD RCP MH136_1 MH137_1 GS_MH1 MH136 GS200 MH136_4 MH136_3 UD UD FRP-MH1 NIP OCS POLE FND. (TYP.) SEE DP54 MH136_A FRP RCP P548 FRP_MH-2 (SEE DETAIL SHEET ON 000-C-8041) MH264_1 CB-ST1 UD RCP MW-36.4 NIP RETAINING WALL SEE DP18A UD SCHOOL STREET SIPHON (SEE DETAIL SHEET 000-U-2002) NIP COMMUNITY PATH DRAINAGE (TYP.) SEE DP06 NIP SIGNAL SEE DP56 APPROACH SLAB (TYP.) SC-DMH1 RCP P548A NIP SCHOOL STREET BRIDGE SEE DP54 MH264 EXIST. PEDESTRIAN BRIDGE STUB FOR DRAIN CONNECTION FROM SOMERVILLE HIGH SCHOOL MH COVER TO BE PRESSURE SEALED SEE SHEET 000-C-6111 NIP INTERTRACK FENCE SEE DP01 RCP CO760A RCP RCP P649 SHS1 NIP SEE DP06 CONNECT TO SOMERVILLE HIGH SCHOOL DMH MH794 RCP P514 MH761 PVC P654 PVC P654_1 GILMAN SQUARE STATION PLATFORM 30 35 40 45 50 55 60 65 30 35 40 45 50 55 60 65 0+00 EG 44.9 TT 49.04 0+50 EG 45.4 TT 48.79 1+00 EG 45.3 TT 49.26 1+50 EG 46.0 TT 51.49 2+00 EG 50.0 TT 53.94 2+50 EG 55.9 TT 3+00 EG 61.1 TT CB-ST1 MB-EB STA:275+52 CATCH BASIN RIM 59.15' INV OUT 53.00' (P548A) P548A 12" RCP SC-DMH1 MB-EB STA:275+21 4' DIA. DMH RIM 64.98' INV IN 52.70' (P548A) INV IN 52.70' (STUB_SHS) INV OUT 52.60' (P548) P548 18" RCP MH264_1 MB-EB STA:275+21 4' DIA. DMH RIM 60.20' INV IN 52.40' (P548) INV OUT 50.80' (P514) P514 18" RCP MH761 MB-EB STA:275+22 4' DIA. DMH RIM 55.78' INV IN 50.49' (P514) INV OUT 47.21' (P654) P654 18" PVC GS200 MB-EB STA:272+81 4' DIA. DMH RIM 49.06' INV IN 41.11' (P649) INV IN 41.11' (P654_1) INV OUT 41.11' (P123) MH794 MB-EB STA:273+51 4' DIA. DMH RIM 48.69' INV IN 42.96' (P654) INV IN 42.96' (CMP-P658) INV OUT 42.96' (P654_1) PROP. TOP OF COMMUNITY PATH EXIST. GROUND SOMERVILLE HIGH SCHOOL RETAINING WALL P654_1 18" PVC 30 50 60 42 44 46 48 52 54 56 58 D D D D D D MBTA ROW (TYP.) RE REM. RCP RCP CIH MH226_1 MH168 MH141 MH143-A MH265 NIP SEE DP06 RCP P630 MH785 RCP P630A SHS2 PVC P655 MH786 RCP UD NIP COMMUNITY PATH (TYP.) SEE DP06 NIP COMMUNITY PATH DRAINAGE (TYP.) SEE DP06 NIP INTERTRACK FENCE SEE DP01 NIP OCS POLE FND. (TYP.) SEE DP54 CONNECT TO SOMERVILLE HIGH SCHOOL DMH BR-1 NIP RETAINING WALL SEE DP17 NIP SEE DP56 MW-36.4 NIP RETAINING WALL SEE DP18A MEDFORD ST CONNECT TO SOMERVILLE HIGH SCHOOL DRAINAGE 40 45 50 55 40 45 50 55 0+00 EG 52.4 TT 54.24 0+50 EG 48.4 TT 53.25 1+00 EG 47.1 TT 51.34 1+50 EG 47.1 TT 49.80 MH785 MB-EB STA:270+45 4' DIA. DMH RIM 49.82' INV IN 44.82' (P655) INV IN 44.43' (P630A) INV OUT 44.43' (P629) P655 18" PVC MH786 MB-EB STA:268+74 4' DIA. DMH RIM 54.19' INV IN 48.13' (P657) INV OUT 48.10' (P655) PROP. TOP OF COMMUNITY PATH EXIST. GROUND CONNECT TO SOMERVILLE HIGH SCHOOL DRAINAGE PLAN SOMERVILLE HIGH SCHOOL CONNECTION PROFILE 1 0 0 HOR. SCALE IN FEET VER. SCALE IN FEET 20 40 5 5 10 0 0 20 ISSUE DATE DESCRIPTION BY CHK'D APP. SCALE: DATE: DRAWN BY DESIGN BY CHECK BY ISSUE SHEET: PLAN NO.: MBTA CONTRACT NO. E22CN07 CAMBRIDGE / SOMERVILLE / MEDFORD, MASSACHUSETTS MASSACHUSETTS BAY TRANSPORTATION AUTHORITY GREEN LINE EXTENSION PROJECT PLOTTED: 11/15/18 1:04AM BY:CHAHARA DRAWING: I:\PROJECTS\4019139\4019139_0001\90_CAD MODELS AND SHEETS\11 DRAINAGE MB SEG 2\04_C_CIVIL\SHEETS\000-C-2019-C.DWG [BALL-GILMAN-WASHINGTON AREA MB-EB 275+27 AND MB-EB 266+00] 11/11/18 7:03PM RELEASED FOR CONSTRUCTION DESIGN PACKAGE: 11 BALL-GILMAN-WASHINGTON AREA SOMERVILLE HIGH SCHOOL DRAINAGE   000-C-2019-C 1 DK PS AC 08/21/18 AS NOTED 1 11/01/18 DCN-DP11-001 AC PS PT                                     SOMERVILLE HIGH SCHOOL CONNECTION PROFILE 2 PLAN 1 EXHIBIT B - CONCEPTUAL DRAWINGS OF SHS-RELATED DRAINAGE SHEET 1 OF 1 ROW ROW SOMERVILLE SCHOOL STREET SIPHON ON MBTA ROW DRAINAGE FROM SOMERVILLE HIGH SCHOOL