Failure to acknowledge all addenda in the BID may cause rejection of the BID. See Instructions to Bidders.

Transcription

1 Addendum #1 Project: Coteau Street & Utility Improvements Bid Date: 1:00 P.M., Local Time, March 20, 2017 Bid Location: Office of the City Administrator/Clerk, City of Lake Benton 106 S. Center Street Lake Benton, MN Issue Date: March 15, 2017 Notice: Failure to acknowledge all addenda in the BID may cause rejection of the BID. See Instructions to Bidders. SCOPE OF THIS ADDENDUM: The following becomes a part of the original project manual and drawings, taking precedence over the items that may conflict. The bidder shall note receipt and make acknowledgment of the Addendum on his/her bid form, incorporating its provision in his/her bid. PROJECT MANUAL: The following additions, changes and clarifications have been made to the Project Manual. Section Water Utilities: 3.15 DISINFECTION 3.15 B. 1. c. Delete first sentence and TABLE in its entirety. Replace with: c. The tablet or continuous feed methods shall give a dose of at least 50 ppm available chlorine, rather than 25 ppm dose specified in AWWA Standard C651. TABLE OF OUNCES OF CALCIUM HYPOCHLORITE GRANULES TO BE PLACED AT BEGINNING OF MAIN AND AT EACH 500-FOOT INTERVAL Pipe Diameter Calcium Hypochlorite (Inches) Granules (Ounces) Page 1 of 4

2 Addendum #1 (cont d) and larger D 2 x30.2 (where D is inside pipe diameter in feet.) B. 1. c. 2) Delete D 2 L Replace with: D 2 L B. 1. c. 2) Delete TABLE in its entirety. Replace with: TABLE OF NUMBER OF 5-GRAM CALCIUM HYPOCHLORITE TABLETS REQUIRED FOR DOSE OF 50 MG/L* Length of Pipe Section Pipe Diameter 13 or (Inches) Less Number of 5-gram Hypochlorite Tablets *Based on 3.25 grams available chlorine per tablet. Page 2 of 4

3 Addendum #1 (cont d) 3.17 MAINTAINING WATER SERVICE Add: B. When temporary watermains and water services are used, the following requirements must be met: 1. The temporary watermain piping shall meet the National Sanitation Foundation Standard 61. The temporary watermain shall be disinfected in accordance with AWWA C 651, with the exception that a minimum chlorine residual of 50 ppm shall be used. 2. The temporary water service line shall meet the National Sanitation Foundation Standard 61. Otherwise, the service line material must meet the requirements of the Plumbing Code, Minnesota Rules, Chapter 4714, and must be approved by the manufacturer for above ground use. 3. The watermain and service lines must be tested for bacteriological quality prior to use in accordance with AWWA Standard C The temporary water service lines must be disinfected in accordance with either AWWA Standard C 651 (with the exception listed above), or the Minnesota Plumbing Code, Minnesota Rules, Chapter DRAWINGS: The following additions, changes and clarifications have been made to the Drawings. Sheet 5 Delete: Plan sheet in its entirety. Add: Revised plan sheet 5 General Details-Storm and Sanitary Sewer Sheet 6 Delete: Plan sheet in its entirety. Add: Revised plan sheet 6 General Details-Street Sections/Details NOTE: The Plan Holders List and addendums are available via the internet at by clicking on the Project Information link. Page 3 of 4

4 Addendum #1 (cont d) Project Manual and Drawing inquiries regarding the work should be directed to: Contact Persons: BANNER ASSOCIATES, INC. Scot Leddy Pat Carey Phone -(605) or ATTACHMENTS 1. Sheet 5 General Details-Storm and Sanitary Sewer 2. Sheet 6 General Details-Street Sections/Details I hereby certify that this plan, specification, or report was prepared by me or under my direct supervision and that I am a duly Licensed Professional Engineer under the laws of the State of Minnesota. Print Name: Scot D. Leddy, PE Signature Date: 3/15/2017 License # Page 4 of 4

5 2- #4 EPOXY COATED 12" O.C. 10' MIN. EACH DIRECTION FROM INLET #4 EPOXY COATED STEEL REINFORCING 24" O.C. BOTH WAYS CONCRETE SLAB SEE STORM SEWER PLAN & PROFILE SHEETS FOR SIZE AND NUMBER OF OUTLETS 24" DIA. OR SEE P&P DROP INLET 6'-0" MIN. CURB INLET FRAME, GRATE, & CURB BOX H-25 LOAD- NYLOPLAST 3024AGR, NEENAH R-3067, DEETER 2407 OR APPROVED EQUAL GRATE 2'X3' DIAGONAL OR AS INDICATED ON PLAN SHEETS DROP INLET FRAME, GRATE, AND CURB BOX. 2'X3' CASTING CONCRETE CURB 8" MIN. 1/4" PAINTED STEEL PLATE W/TABS TO CENTER BEARING PLATE ON DI. CASTING SHALL BEAR ONTO PLATE WHICH SHALL BE CAST INTO SLAB INVERT VARIABLE (SEE ST. SEWER PLANS) SURFACING ROAD BASE CONCRETE SLAB INSERTA TEE FOR SUBDRAIN CONNECTION (INCIDENTAL) NOTE: CONTRACTOR SHALL FURNISH AND INSTALL THE CONCRETE SLAB & REINFORCING. THE COST OF THE WORK SHALL BE INCLUDED IN THE BID PRICE FOR "PVC DROP INLETS". THE SLAB WILL NOT BE CONSTRUCTED UNTIL ALL BASE COURSE IS IN PLACE. 5'-0" MN. 1'-0" 24" DIA. AREA INLET FRAME & GRATE ADS/NYLOPLAST 2824AG FLAT H-10 GRATE INVERT PVC AREA INLET DETAIL VARIABLE (SEE STORM SEWER PLANS) COMPACTED BACKFILL SELECT BACKFILL MATERIALS FROM EXCAVATION STOCKPILE W INSTALLATION PER ASTM 2321 SLOPE AS REQUIRED 12" PIPE O.D. +12 INCHES STORM SEWER BEDDING DETAIL T:\Autocad-Setup\Borders\Banner_Logo_Color_High.jpg - Toll Free: MANHOLE DEPTH FOR MEASUREMENT PURPOSES VARIES 4'-0" 1'-0" MAX. 5" SEE PLANS APPROVED MANHOLE FRAME & COVER - NEENAH R-1733 WITH SELF SEALING SOLID LID, OR ENGINEER APPROVED EQUIVALENT. 2'-3" PVC DROP INLET DETAIL TOP OF M.H. SHALL BE AT FINISHED GRADE OR AS SHOWN EXTERNAL CHIMNEY SEAL BY ADAPTER, INC. OR EQUAL PRECAST CONCRETE ADJUSTING RINGS & MANHOLE CASTING SET IN MORTAR TO FORM LEAKPROOF SEAL. PRECAST CONCRETE MANHOLE - ECCENTRIC CONE TYPICAL ALL JOINTS SEALED WITH RUBBER O-RING GASKET IN ACCORDANCE WITH ASTM SPECIFICATION C-443 AND AND EXTERNAL JOINT SEAL: 9-INCH CRETEX WRAP OR EQUAL. PRECAST CONCRETE MANHOLE SECTION VARIES FASTENING STRAPS (TYP) 2" MAX. PIPE SIZE 4" - 15" 18" - 48" 1'-0" W - TRENCH WIDTH - HDPE STORM MIN WIDTH PIPE O.D. + 12" PIPE O.D. + 18" 1'-0" MAX. WIDTH PIPE O.D. + 1 PIPE O.D. + 24" SUBDRAIN BEDDING DETAIL FINE FILTER AGGREGATE MN/DOT J (INCIDENTAL TO PIPE INSTALL) PERFORATED PIPE (PVC OR CORRUGATED PE) WITH PROTECTIVE WRAP, MEETING MN/DOT 3245 AND 3278 SPECS. PROJECT / SHEET TITLE : COTEAU STREET & UTILITY IMPROVEMENTS GENERAL DETAILS - STORM AND SANITARY SEWER LAKE BENTON, MINNESOTA REV. DATE DESCRIPTION 1 3/15/17 Addendum No. 1 Slope 1"/Ft. PIPE DIA./ " +/- VARIES I hereby certify that this plan, specification, or report was prepared by me or under my direct supervision and that I am a duly Licensed Professional Engineer under the laws of the State of Minnesota. Print Name: SCOT D. LEDDY Signature: Date 3/15/17 License # FLEXIBLE RUBBER BOOT W/ TWO (2) STAINLESS STEEL PIPE CLAMPS TO PROVIDE A WATER TIGHT CONNECTION. MAINLINE PIPE SHALL RUN CONTINUOUS THROUGH MANHOLE. PIPE DIA. SANITARY SEWER MANHOLE DETAIL PRECAST CONCRETE INTEGRAL BASE AND BARREL SECTION POLYSEAL REPAIR COUPLER DETAIL MATERIAL NOTE: DOUBLE WIDE FIELD REPAIR COUPLER BY ADVANCED DRAINAGE SYSTEMS, INC. PART # (PIPE SIZE)67RC OR EQUIVALENT PRODUCT. FOLLOW MANUFACTURERS INSTRUCTIONS FOR INSTALLATION. JOB No.: DATE: FEBRUARY 16, 2017 DESIGNED BY: SDL CHECKED BY: PJC DRAWN BY: CMC 0 1/2" 1" SCALE REDUCTION BAR SHEET No. : 5

6 C L ROADWAY SCARIFY EXISTING SUBGRADE TO DEPTH AND COMPACT TO 98% ASTM D /2" TYPE LV3 WEARING COURSE (SPWEB240B) MNDOT SPEC /2" TYPE LV3 NON WEARING COURSE (SPNWB230B) MNDOT SPEC 2360 NOMINAL 32.5" TYPICAL SECTION - COTEAU STREET (STA TO STA. 4+77) UNDERCUT LINE 12" GRAVEL BASE COURSE - COMPACT TO 100% ASTM D698 MNDOT CLASS 5 GEOSYNTHETIC GEOGRID POINT REFERRED TO FOR TOP OF CURB 13 1/2" 3" 3" RADIUS SLOPE 6.25% TYPICAL CONCRETE CURB AND GUTTER SECTION 15" 24" (MATCH PROFILE) 7" 2-18" #4 REBAR PLACED AT ALL CONSTRUCTION JOINTS (INCIDENTAL) GRAVEL BASE COURSE T:\Autocad-Setup\Borders\Banner_Logo_Color_High.jpg - Toll Free: C L ROADWAY NOMINAL 32.5" POINT REFERRED TO FOR TOP OF CURB 9" 15" SCARIFY EXISTING SUBGRADE TO DEPTH AND COMPACT TO 98% ASTM D /2" TYPE LV3 WEARING COURSE (SPWEB240B) MNDOT SPEC /2" TYPE LV3 NON WEARING COURSE (SPNWB230B) MNDOT SPEC 2360 TYPICAL SECTION - COTEAU STREET (STA TO STA. 1+60) UNDERCUT LINE 12" GRAVEL BASE COURSE - COMPACT TO 100% ASTM D698 MNDOT CLASS 5 12" GRANULAR SUBBASE - MNDOT AGGREGATE COMPACT TO 100% ASTM D698 GEOSYNTHETIC GEOGRID GEOTEXTILE FABRIC 1/2" RAD. 12 1/2" 8 1/2" SLOPE 8.33% SLOPE 6.25% TYPICAL CONCRETE GUTTER SECTION (DROP CURB) BASE COURSE 24" (MATCH PROFILE) AS INDICATED SLOPE: AS INDICATED, 2% MAX 7" 4" PORTLAND CEMENT CONCRETE-REINFORCED WITH #4 24" OC EACH WAY THRU DRIVEWAYS TYPICAL SIDEWALK DETAIL 2-18" #4 REBAR PLACED AT ALL CONSTRUCTION JOINTS (INCIDENTAL) GRAVEL BASE COURSE SIDEWALK NOTES: 1. INSTALL EXPANSION JOINTS AT 100' MAX SPACING 2. JOINT SPACING TO MATCH SIDEWALK WIDTH. ALL JOINTS WILL BE SAWCUT. 3. SEE MnDOT STANDARD PLAN FOR ADDITIONAL INFORMATION. ALL PEDESTRIAN RAMPS SHALL BE THICK PAVEMENT. PROJECT / SHEET TITLE : COTEAU STREET & UTILITY IMPROVEMENTS GENERAL DETAIS - STREET SECTIONS / DETAILS LAKE BENTON, MINNESOTA REV. DATE DESCRIPTION 1 3/15/17 Addendum No. 1 I hereby certify that this plan, specification, or report was prepared by me or under my direct supervision and that I am a duly Licensed Professional Engineer under the laws of the State of Minnesota. Print Name: SCOT D. LEDDY Signature: Date 3/15/17 License # JOB No.: DATE: FEBRUARY 16, 2017 DESIGNED BY: SDL CHECKED BY: PJC DRAWN BY: CMC 0 1/2" 1" SCALE REDUCTION BAR SHEET No. : 6