Att. A. NBWC Misc Notes and Special Provisions.pdf

MISCELLANEOUS NOTES

The Engineer for this project is as follows:

Michael Bippley, P.E.

Michigan Department of Transportation 3880 Red Arrow Hwy Benton Harbor, MI 49022 269-207-2269 bippleym@michigan.gov

After award, start work on the date approved by the Engineer, which must be no earlier than April 1, 2023. In no case may any work be commenced prior to award by the Department.

The project must be completely open to traffic by June 14, 2023.

The entire project must be completed by June 23, 2023.

New Buffalo Welcome Center may be closed during work to place septic tank and for hook up to system. The maximum closure of Welcome Center is 12 hours.

The closure and maintenance of traffic must be coordinated with the local MDOT Garage and the New Buffalo Welcome Center staff.

Only days allowed for complete closure of Welcome Center are Monday, Tuesday, or Wednesday.

20MUXXX(AXXX)

MICHIGAN

DEPARTMENT OF TRANSPORTATION

SPECIAL PROVISION

FOR

PRECAST CONCRETE SEPTIC TANK

UTL:JBM 1 of 2 APPR:::XX-XX-XX

a. Description. This work consists of furnishing and installing a 3450-gallon precast concrete septic tank as shown on the plans, including the manhole frames and covers, grade rings, internal PVC pipe and fittings, effluent filter, and all excavation, bedding, backfill, compaction and dewatering as necessary to complete the installation.

Ensure the precast concrete septic tank complies with all state and local regulations which apply to construction, installation and use in a septic system.

b. Materials. Ensure the precast concrete septic tank is rated at a minimum of 3450- gallons and constructed of precast concrete segments free of interior lateral or other bracing, as manufactured by Advance Concrete Products Company, Kerkstra Precast, Inc., Norwalk Concrete Industries or Engineer approved equal. Provide a septic tank meeting ASTM C1227.

Ensure the septic tank is an anti-floatation design and certified to meet HS-20 loading by a Professional Engineer licensed in the State of Michigan.

Provide septic tank effluent filter with stem extension and stainless-steel stiffener, as shown on the plans. Use Orenco Systems Inc. Biotube Effluent Filter FT1554-36, Polylok PL-525 or Engineer approved equal. Place the effluent filter as shown on the plans or where easily accessible.

Provide Schedule 40 PVC pipe in accordance with ASTM D2665. Pipe connections to tanks must utilize cast-in connectors or boot connectors meeting ASTM C923.

Provide manhole frames and covers in accordance with the Standard Plan R-18 Series, Cover Q.

Provide granular material Class IIIA for bedding in accordance with section 902 of the Standard Specifications for Construction. Ensure the bedding material is from a natural source. The use of fine material generated from crushing recycled concrete is prohibited.

c. Construction. Minimize disturbance to the existing ground and avoid damage to existing vegetation. Place the tank on a six-inch bedding layer comprised of compacted, level, granular material Class IIIA in accordance with section 902 of the Standard Specifications for Construction.

Ensure excavation and backfill is in accordance with sections 206 and 402 of the Standard Specifications for Construction, respectively. The tanks must be designed to withstand buoyant forces when completely submerged. Furnish buoyancy calculations to the Engineer prior to installation. Prior to backfilling, septic tanks must be tested as prescribed in section 9.2.2 of ASTM C1227: 9.2.2 Water-Pressure Testing-Seal the tank, fill with water, and let stand for 24 hours.

Refill the tank. The tank is approved if water level is held for 1 hour. Repair leaks and retest until zero leakage requirement is met. Submit shop drawings in portable document format (PDF) for all appurtenances associated with the concrete septic tank. Ensure shop drawings are reviewed and approved prior to beginning work on the concrete septic tank.

20MUXXX(AXXX)

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d. Measurement and Payment. The completed work, as described, will be measured, and paid for at the contact unit price using the following pay item:

Pay Item Pay Unit

Conc Septic Tank, 3450 Gallon ................................................................................. Each

© 2023 Microsoft Corporation © 2023 Maxar ©CNES (2023) Distribution Airbus DS Earthstar Geographics SIO

SEPTIC TANK

PROP ANTI-FLOTATION

EX STEEL ENCASEMENT PIPE

APPROXIMATE END POINT OF

(269) 926-0600

BENTON HARBOR, MI 49022

2425 MEADOWBROOK RD.

INDIANA MICHIGAN POWER

EX LIFT STATION

CS:

JN:

TSC:

DATE:

DESIGN UNIT:

DRAWING SHEET

11014

03/22/2023

0 1

VERT. (FT)

HORZ. (FT)

MILLER

COLOMA

SEWER SYSTEM IMPROVEMENTS

NEW BUFFALO WELCOME CENTER

SANITARY SEWER SHEET

Michigan Department of Transportation

SECT

DESCRIPTIONAUTH

DATENO.

FINAL ROW PLAN REVISIONS SUBMITTAL DATE:

FILE:New Buffalo Welcome Center_Site Layout.dgn

OR WEDNESDAY.

ONLY DAYS ALLOWED FOR CLOSURE ARE MONDAY, TUESDAY,

MAXIMUM CLOSURE OF WELCOME CENTER IS 12 HOURS.

SEPTIC TANK AND FOR HOOK UP TO SYSTEM.

WELCOME CENTER MAY BE CLOSED DURING WORK TO PLACE

NOTE TO CONTRACTOR:

© 2023 Microsoft Corporation © 2023 Maxar ©CNES (2023) Distribution Airbus DS Earthstar Geographics SIO

CRITICAL UTILITY

CAUTION -

QUANTITIES THIS SHEET

Mobilization, Max1 LSUM

Mulch Blanket167 Syd

Seeding, Mixture TUF8 Lb

Topsoil Surface, Salv, LM14 Cyd

Conc Septic Tank, 3450 Gallon1 Ea

Sanitary Sewer, PVC, 8 inch, Tr Det B210 Ft

CS:

JN:

TSC:

DATE:

02/17/2023

MILLER

COLOMA

SEWER SYSTEM IMPROVEMENTS

NEW BUFFALO WELCOME CENTER

SANITARY SEWER DETAIL SHEET

NO SCALE

Michigan Department of Transportation

FILE:

NEW BUFFALO WELCOME CENTER SEPTIC TANK_DETAIL

STRUCTURES AS APPROVED BY THE ENGINEER.

GRADES AS NECESSARY TO ALLOW DRAINAGE AWAY FROM

APPROXIMATIONS ONLY. CONTRACTOR MUST FIELD ADJUST

PROPOSED GROUND AND SANITARY ELEVATIONS ARE

SATISFIED.

LINES TO ASSURE MINIMUM SEWAGE FLOW REQUIREMENTS ARE

PIPING PRIOR TO CONSTRUCTION OF THE BUILDING WASTE

VERIFY FLOW ELEVATIONS OF THE EXISTING SYSTEM AND

EXISTING SANITARY SEWER SYSTEM. THE CONTRACTOR MUST FIELD

EXISTING ELEVATIONS ARE FROM AS-BUILT PLANS OF THE

NOTES:

9'-6"

8'-8"

PROP COVER "Q" (TYP)

EXISTING LIFT STATION PLAN

NOT TO SCALE

1'-6"

1'-6"

TYP

5"

8'6"±

PROP 8" PVC

TYP

5"

SEPTIC TANK PLAN

PROPOSED 3450 GALLON

NOT TO SCALE

10'-6"

TYP

6"

PROP BOLTED DOWN COVER (TYP)

EX CONTROL PANEL

PROP 8" PVC SAN SEWER @ 1.11%

NOT TO SCALE

EXISTING LIFT STATION ELEVATION

NOT TO SCALE

AS NECESSARY (TYP)

OR GRADE RINGS

PROP 3" DIA MANHOLE RISER

5"

TYP

PROP 11.25° BENDS

TYP

6"

"7

FILTER

PROP EFFLUENT

1'-6"

FROM COVERS (TYP)

PROP GRADE TO DRAIN AWAY

1'-6"

PROP EL = 684.67

EX 8" PVC SAN SEWER @ 2.00%

PROP FL EL 683.00

PROP FL EL 682.75

EL 682.65

RPOP INLET INVERT

SEPTIC TANK ELEVATION

WATER DEPTH (APPROX 3')

AT THE MIDPOINT OF THE

LOCATE BOTTOM OF TEE

& DROP PIPE

PROP 6"X6' TEE

8"

TYP

TYP

WATERSTOP

© 2023 Microsoft Corporation © 2023 Maxar ©CNES (2023) Distribution Airbus DS Earthstar Geographics SIO

EX LIFT STATION

CS:

JN:

TSC:

DATE:

03/22/2023

0 1

VERT. (FT)

HORZ. (FT)

MILLER

COLOMA

SEWER SYSTEM IMPROVEMENTS

NEW BUFFALO WELCOME CENTER

SANITARY SEWER SHEET

Michigan Department of Transportation

FILE:New Buffalo Welcome Center_MOT.dgn

HIGH LEVEL ALARM

SEPTIC TANK WITH

PROP ANTI-FLOTATION

© 2023 Microsoft Corporation © 2023 Maxar ©CNES (2023) Distribution Airbus DS Earthstar Geographics SIO

QUANTITIES THIS SHEET

FLUORESCENT PLASTIC DRUM OR 42" GRABBER CONES50 EA

PORTABLE CHANGEABLE MESSAGE SIGN1 EA

BLOCK OFF WORK AREA

TO EACH OTHER TO

PLACE DRUMS NEXT

IN WEAVE/MERGE LANE

TO CREATE 840' MERGE

USE 17 GRABBER CONES (DOUBLE BASES)

WHEN CLOSING WELCOME CENTER,

MDOT WILL BE PROVIDING MOT

FOR CONTRACTOR INFORMATION ONLY

NOTE:

AS WELL AS WHEN IT IS CLOSED

TO WARN OF UPCOMING WELCOME CENTER CLOSURE

PCMS TO BE PLACED ON EB I-94 IN INDIANA