James Park North Field Renovations. Bid # ADDENDUM No. 2. May 16, 2017

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1 James Park North Field Renovations Bid # ADDENDUM No. 2 May 16, 2017 Any and all changes to the Contract Document are valid only if they are included by written addendum to all potential respondents, which will be mailed, ed and/or faxed prior to the proposal due date to all who are known to have received a complete bid document. Each respondent must acknowledge receipt of any addenda by indicating on the Bid Form. Each respondent, by acknowledging receipt of any addenda, is responsible for the contents of the addenda and any changes to the bid proposal therein. Failure to acknowledge receipt of any addenda may cause the proposal to be rejected. If any language or figures contained in this addendum are in conflict with the original document, this addendum shall prevail. This addendum consists of the following: 1. Addendum Number Two (2) is attached and consists of a total of fifteen (15) pages including this cover sheet. Any changes to the drawings or specifications noted within Addendum Number Two (2) will be reflected in subsequent drawing issues. Please feel free to call ( ) or (lithomas@cityofevanston.org) with any questions or comments. Sincerely, Linda Thomas Purchasing Specialist

2 James Park North Field Renovations Bid # ADDENDUM No. 2 May 16, 2017 This addendum forms a part of the Specifications and Bid Documents for Bid #17-34 and modifies these documents. This addendum consists of the following: Drawings: Sheet C Modify the callout referring to the arch backstop to read 62 wide arch backstop in lieu of 62 wide arch backstop with extension. An extension will not be installed at the new backstop. Sheet C This drawing is being reissued as attached. Sheet D Replace Detail A Multi-Flow Underdrain Section with the attached revision. 2. Add Detail D Silt Fence as attached. Sheet D Revise the Inlet Type A detail as follows: a. Use of concrete masonry units and brick masonry shall not be allowed. b. Installation shall include precast rubber boots conforming to ASTM C-923 at all pipe connections. Specifications: Exhibit A Bid Form 1. Replace page 7 of Exhibit A Bid Form with the attachment. Section 1270 Unit Prices 1. Revise unit price item #55 as follows: Unit Price No. 55 Pipe Underdrains, 6 (Special): Description: Furnish and install Multi-Flow underdrains including, excavation, aggregate bedding, sand backfill, all connectors, and connection to 15 PVC pipe per manufacturer s recommendations as indicated in the Construction Documents. Unit of Measurement: Foot Page 2 of 15

3 2. Revise unit price item #60 as follows: Unit Price No. 60 Erosion and Sediment Control Measures: Description: Furnish, install, and maintain all necessary erosion and sediment control measures in accordance with the Illinois Urban Manual, including, but not limited to, inlet filters, stabilized construction entrance, temporary concrete washout, and perimeter control measures such as silt fence. Unit of Measurement: Lump Sum Section Recreation Equipment 1. A substitution request has been submitted for use of the attached arch backstop. Provided this product includes all features and components specified in the bid documents (including but not limited to powder coated framing, PVC coated chain link fence fabric and specified strength concrete for footings) the attached substitution shall be considered an approved equal. Section Irrigation Systems 1. A substitution request has been submitted for use of the attached sprinkler head. This substitution is considered an approved equal and is acceptable for use on this project. However, please note that regardless of the manufacturer selected, all sprinkler heads installed for this project shall include stainless steel risers. Clarifications to Questions Received: None Note: Acknowledgment of this Addendum is required in the Bid. Page 3 of 15

4 PROPOSED STABILIZED CONSTRUCTION ENTRANCE PROPOSED TEMPORARY CONCRETE WASHOUT 1 INSTALL INLET FILTER PROTECTION INSTALL SILT FENCE 12' OFF BACK OF CURB (APPRO. 790') 1 INSTALL INLET FILTER PROTECTION OAKTON STREET INSTALL INLET FILTER PROTECTION INSTALL INLET FILTER PROTECTION Public Works Agency 2100 Ridge Avenue Evanston, Illinois INSTALL SILT FENCE (APPRO. 190') PROJECT LIMITS INSTALL INLET FILTER PROTECTION 1 EROSION AND SEDIMENT CONTROL NOTES 1. THE PROJECT LIMITS TOTAL 3.8 ACRES, CONSISTING OF 3.4 ACRES OF PERVIOUS ATHLETIC FIELDS AND OTHER GRASSED AREAS AND 0.4 ACRES OF IMPERVIOUS SIDEWALKS AND STREET. THE SOILS IN THE PROJECT LIMITS BELONG TO HYDROLOGIC SOIL GROUP C. 2. PRIOR TO THE START OF CONSTRUCTION, THE CONTRACTOR SHALL MEET WITH THE RESIDENT ENGINEER TO DISCUSS THE PROJECT CONSTRUCTION ACTIVITIES, EROSION AND SEDIMENT CONTROL PRACTICES, AND SITE RESTORATION MEASURES. SITE CLEARING AND ECAVATION SHALL NOT PROCEED UNTIL THE CONTRACTOR PREPARES AND SUBMITS A CONSTRUCTION PROGRAM SCHEDULE FOR ALL EROSION AND SEDIMENT CONTROL PRACTICES, CONSTRUCTION ACTIVITIES, AND SITE RESTORATION MEASURES. 3. AT A MINIMUM, THE CONTRACTOR SHALL INSTALL AND MAINTAIN SOIL EROSION AND SEDIMENT CONTROL BEST MANAGEMENT PRACTICES IN ACCORDANCE WITH THE LATEST EDITION OF THE ILLINOIS ENVIRONMENTAL PROTECTION AGENCY'S URBAN MANUAL. 4. ALL STORM WATER STRUCTURES WITH OPEN LIDS SHALL BE PROTECTED WITH INLET FILTER. DURING CONSTRUCTION, SEDIMENT SHALL BE REMOVED, AS NEEDED, AND FILTERS SHALL BE REPAIRED OR REPLACED, AS NEEDED. PROJECT NAME: NOTES: JAMES PARK NORTH FIELD RENOVATIONS 1" PROVIDE SILT FENCE ON DOWNSLOPE SIDE OF SOIL STOCKPILE AREA (APPRO. 200') 5. THE LOCATION OF THE STABILIZED CONSTRUCTION ENTRANCE WILL BE AGREED UPON BY THE CONTRACTOR AND RESIDENT ENGINEER PRIOR TO THE START OF CONSTRUCTION. 6. ALL SEDIMENT FILTERS AND EROSION PROTECTION FEATURES SHALL BE INSPECTED AND MAINTAINED AT LEAST ONCE A WEEK, WITHIN 24 HOURS OF THE END OF A 0.50 INCH OR GREATER RAINFALL EVENT, AND PERIODICALLY, AS OTHERWISE NECESSARY, TO ALLOW THEM TO OPERATE EFFECTIVELY. 7. ECAVATED SOIL STOCKPILE LOCATIONS SHALL BE LIMITED TO WITHIN THE CONSTRUCTION SITE. 8. ON-SITE EQUIPMENT AND MATERIAL STAGING AND STORAGE LOCATIONS SHALL BE LIMITED TO WITHIN THE CONSTRUCTION SITE. 9. CONSTRUCTION VEHICLE ACCESS SHALL BE LIMITED TO DEFINED CONNECTIONS TO/FROM ADJACENT STREETS. 10. SOIL, MUD, OR DEBRIS DEPOSITED, TRACKED, OR WASHED ON THE ADJACENT STREETS SHALL BE REMOVED DAILY. REVISIONS: NO. 1" DO NOT SCALE DRAWINGS. WHEN PRINTED TO THE CORRECT SCALE, THE BO ABOVE MEASURES 1" x 1". DRAWING SCALE: 1"= 60'-0" DATE / DESCRIPTION 11. WATER PUMPED OR OTHERWISE DISCHARGED FROM THE WORK SITE DURING DEWATERING OPERATIONS SHALL BE FILTERED TO MINIMIZE OFF-SITE DISCHARGE OF SUSPENDED SOLIDS /27/ BID SET 1 05/15/ ADDENDUM NO CONCRETE WASHOUT FACILITIES SHALL BE MADE AVAILABLE, IF NEEDED, AND SHALL BE PROPERLY MAINTAINED THROUGHOUT THE PROJECT. TEMPORARY SOIL STOCKPILE AREA 13. AFTER ACHIEVING PERMANENT VEGETATION, ALL EROSION AND SEDIMENT CONTROL DEVICES SHALL BE REMOVED, AND DRAINAGE STRUCTURES SHALL BE CLEANED. SHEET TITLE EROSION AND SEDIMENT CONTROL PLAN 1 SHEET NO. C-07 NORTH Page 4 of 15

5 ATHLETIC FIELD GRASS AMENDED TOPSOIL 5" MIN, DEPTH VARIES SAND BACKFILL 6-INCH MULTI-FLOW COLLECTOR LINE 6" 3" 2" CA-7 COARSE AGGREGATE STORAGE BED 2" 4" MIN UNDISTURBED SOIL NOTES: 1. INSTALL MULTI-FLOW IN THE CENTER OF THE TRENCH. 2. BACKFILL MATERIAL SHALL BE CLEAN, COARSE SAND. 3. AGGREGATE BEDDING AND SAND BACKFILL SHALL BE INCLUDED IN THE PRICE PER FOOT FOR "PIPE UNDERDRAINS, 6" (SPECIAL)." A MULTI-FLOW UNDERDRAIN SECTION NOT TO SCALE Page 5 of 15

6 FILTER FABRIC 5.0' MA (TYP) FASTENER - MIN. NO. 10 GAGE WIRE 4 PER POST REQUIRED (TYP) FILTER FABRIC UNDISTURBED GROUND LINE 18.0" MIN (TYP) 2.0' MIN DIRECTION OF FLOW 6.0" MIN 6.0" MIN COMPACTED BACKFILL ELEVATION FABRIC ANCHOR DETAIL NOTES: 1. TEMPORARY SEDIMENT FENCE SHALL BE INSTALLED PRIOR TO ANY GRADING WORK IN THE AREA TO BE PROTECTED. THEY SHALL BE MAINTAINED THROUGHOUT THE CONSTRUCTION PERIOD AND REMOVED IN CONJUNCTION WITH THE FINAL GRADING AND SITE STABILIZATION. 2. FILTER FABRIC SHALL MEET THE REQUIREMENTS OF MATERIAL SPECIFICATION 592 GEOTETILE TABLE 1 OR 2, CLASS 1 WITH EQUIVALENT OPENING SIZE OF AT LEAST 30 FOR NONWOVEN AND 40 FOR WOVEN. 3. FENCE POSTS SHALL BE EITHER STANDARD STEEL POST OR WOOD POST WITH A MINIMUM CROSS SECTIONAL AREA OF 3.0 SQUARE INCHES. D SILT FENCE NOT TO SCALE Page 6 of 15

7 PAY ITEM NUMBER PAY ITEM NAME UNIT OF MEASURE TOTAL QUANTITY UNIT PRICE TOTAL PRICE 60 Inlet Filters Erosion and Sediment Control Measures EACH LSUM Message Board EACH 1 62 Rain Garden Sign EACH 1 BASE BID TOTAL PAY ITEM NUMBER ALTERNATE 1 PATH RECONSTRUCTION NORTH OF TENNIS COURTS PAY ITEM NAME UNIT OF TOTAL UNIT MEASURE QUANTITY PRICE TOTAL A1-1 Remove Concrete Pavement SQ FT 256 A1-2 Remove Asphalt Pavement SQ FT 3073 A1-3 Remove Crushed Stone Pavement SQ FT 1472 A1-4 Tree Protection Fence EACH 16 A1-5 Earth Excavation CU YD 297 A1-6 Special Waste Disposal CU YD 297 A1-7 A1-8 A1-9 A1-10 A1-11 A1-12 Portland Cement Concrete Sidewalk, 5" SQ FT 228 Aggregate Base Course, Type B, 4" SQ YD 25 Aggregate Base Course, Type B, 8" SQ YD 513 Geotechnical Fabric for Ground Stabilization SQ YD 513 Hot Mix Asphalt Binder IL-19.0, N50 TON 65 Hot Mix Asphalt Surface, Mix D, N50 TON 43 A1-13 Pavement Marking FOOT 99 A1-14 Topsoil CU YD 225 A1-15 Athletic Seeding SQ YD 848 A1-16 Athletic Field Establishment and Maintenance CAL MO 3 ALT 1 TOTAL EHIBIT A Page 7 of 15 7

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12 Tech Spec 8005 Series Rotors Bigger, Better, Built to Last The Rain Bird 8005 Rotor is built rugged to withstand the harsh conditions and vandalism present in commercial rotor applications. It has been designed and tested to ensure the high reliability demanded by the market today. Its extensive customer identified features and 80 foot radius make it ideal for sportsfields, parks and other large turf applications. Features Five year trade warranty. Memory Arc returns the rotor to its original arc setting. Non-strippable drive mechanism prevents damage from vandals. Brass reinforcing shaft of the nozzle turret to riser withstands vandal kick. Optional stainless steel riser model helps deter vandalism on public turf areas. Full and part circle operation in one unit to reduce inventory requirements. Easy, wet, dry arc adjustment with slotted screwdriver through top of rotor from 50 to 330 part-circle, 360 non-reversing full-circle. Left and right side trips adjustable for ease of installation without turning the case and loosening the pipe connection. Seal-A-Matic (SAM) check device/riser to help prevent low head drainage. Water-lubricated gear drive. Rain Curtain nozzles for optimal distribution and close-in watering resulting in superior uniformity. Nozzles are interchangeable from the front with no special tools. Self-adjusting turbine stator allows nozzle replacement with no other adjustments required. Heavy duty retract spring ensures positive pop-down. Standard rubber cap. (Green) Optional Purple rubber cover for nonpotable applications Operating Range Radius: 57 to 81 feet (17,4 to 24,7 m) Pressure: 50 to 100 psi (3,5 to 6,9 bar) Flow: 11.1 to 36.3 gpm (2,54 to 8,24 m 3 /h; 0,70 to 2,29 l/s) Specifications 1 (26/34) NPT or BSP female threaded inlet SAM check device holds up to 10 feet (3,1 m) of head Rain Curtain nozzles: 12 - beige; 14 - light green; 16 - dark brown; 18 - dark blue; 20 - red; 22 - yellow; 24 - orange; 26 - white Nozzle outlet trajectory is 25º Dimensions Exposed diameter: (4,8 cm) Overall diameter: (7,9 cm) Overall height: (25,7 cm) Pop-up height: 5 (12,7 cm) Note: Pop-up height is measured from cover to center of primary nozzle port. Overall body height is measured popped down. Models 8005: 1 NPT female threaded inlet (plastic riser stem) SS: 1 NPT female threaded inlet (stainless steel covered riser stem). Optional rubber collar (black) Optional non-potable rubber collar (purple) *All models available with BSP threads Page 12 of 15 How To Specify SS - NP - 26 Model 8005 Series Nozzle Size 26 Optional Feature NP: Non-Potable Cover Optional Feature SS: Stainless Steel Riser

13 8005 Series Rotors Standard Rubber Cover with Exposed Diameter for enhanced safety on playing fields Vandal Resistant Tripping Mechanism with Memory Arc Adjustable Right & Left Trips Adjustment Mechanism for part-circle and non-reversing full-circle operation Brass Reinforcing Shaft brass shaft for enhanced protection against vandals Interchangeable Color-coded Rain Curtain Nozzles for superior water distribution Non-Strippable Drive Mechanism Pressure-Activated Wiper Seal protects the internals from debris Self-Adjusting Stator automatically adjusts when nozzle is changed Seal-A-Matic (SAM) Check Device prevents puddling/erosion Filter with Built-In Freeze Protection Page 13 of 15

14 Tech Spec 8005 Nozzle Performance n s Pressure Nozzle Radius Flow Precip Precip psi ft. gpm in/h in/h Precipitation rates based on half-circle operation n Square spacing based on 50% diameter of throw s Triangular spacing based on 50% diameter of throw Performance data collected in zero wind conditions Performance data derived from tests that conform with ASAE Standards; ASAE S Nozzle Performance METRIC n s Pressure Nozzle Radius Flow Flow Precip Precip bar m m 3 /h l/m mm/h mm/h Page 14 of 15

15 Specifications The full- or part-circle sprinkler shall be a single stream, water lubricated, gear drive type capable of covering a foot (meter) radius at a base pressure of pounds per square inch (bar) with a discharge rate of gallons per minute (l/h, m 3 /h). The sprinkler shall be capable of both full circle and part circle operation in the same unit. The mode of operation shall be selected by inserting a flat blade screwdriver in the top of the rubber cap and turning a selector approximately 45 degrees. The sprinkler shall not reverse direction during continuous operation in the full circle mode. The part-circle sprinkler shall have adjustable arc coverage of 50 to 330 degrees. Arc adjustment can be performed with or without the rotor in operation and shall require only a flat blade screwdriver. The arc adjustment can be performed on both the right and left trip of the sprinkler. The sprinkler shall have a rotating nozzle turret independent of the riser stem. The portion of the riser stem that is in contact with the wiper seal shall be non-rotating. The sprinkler shall have a non-strippable drive mechanism and permit manual rotation of the pop-up stem in any direction. This shall have no effect on either the drive or the set arc. Once the manual rotation is terminated, the sprinkler shall automatically return the water stream to its preset arc. The sprinkler shall have a pressure activated, multi-function, soft elastomeric wiper seal. This wiper seal shall prevent the sprinkler from sticking in the up position, and be capable of sealing the sprinkler riser stem to the sprinkler cap under normal operating pressures. The sprinkler shall have a screen attached to the drive housing to filter inlet water, protect the drive from clogging and simplify its removal for cleaning and flushing of the system. The sprinkler body shall have a 1 (26/34) female (NPT or BSP) bottom inlet. The sprinkler shall have a standard rubber cover which designates each adjustment opening from the top. The sprinkler shall have a two piece, front-load nozzle assembly which will allow the nozzle to be installed without a stator bushing change. The primary and secondary nozzle ports shall be contained in one of the parts and shall be unique to each nozzle size. The tertiary nozzle port shall be common to all of the other primary/secondary nozzle assemblies. The sprinkler shall have a selection of eight colorcoded nozzles. All nozzles shall have three ports for optimal close-in, mid-range and long-range water distribution. The sprinkler shall have a stainless steel nozzle retention screw. The angle of trajectory shall be 25 degrees from horizontal. The sprinkler shall have a strong stainless steel retract spring for positive pop-down. The sprinkler shall have a standard Seal-A-Matic (SAM) device capable of holding up to 10 feet (3,1 m) of head. Pop-up height as measured from the top of the cover to the centerline of the nozzle orifice shall be at least 5 inches (12,7 cm). The sprinkler s overall height shall be inches (25,7 cm) and the exposed diameter shall be 17 8 inches (4,8 cm) SS When so indicated on the design, the rotor shall have a stainless steel covered nozzle turret and riser stem. The riser stem shall be tapered and conform to the standard plastic riser in all other ways. The sprinkler shall be as manufactured by Rain Bird Corporation, Glendora, California. Rain Bird Corporation 6991 E. Southpoint Road Tucson, AZ Phone: (520) Fax: (520) Rain Bird Technical Services (800) RAINBIRD ( ) (U.S. and Canada) Rain Bird Corporation 970 West Sierra Madre Avenue Azusa, CA Phone: (626) Fax: (626) Specification Hotline (U.S. and Canada) Rain Bird International, Inc West Sierra Madre Ave. Azusa, CA Phone: (626) Fax: (626) The Intelligent Use of Water Registered Trademark of Rain Bird Corporation 2012 Rain Bird Corporation 5/12 Page 15 of 15 D37245C