The following Specifications of the Special Provisions have been revised and/or added (in red):

Transcription

1 RE: City of Monrovia Project MR-011 South Area Infrastructure Improvement Project Addendum #1 December 14, 2017 Dear Bidders: The attached information and clarifications constitutes Addendum #1 for the City of Monrovia Project MR-011 South Area Infrastructure Improvement Project. Revised Plans Sheets # C-1, C-3, C-4, C-5, C-30, L-1, L-2, L-3, L-4, L-5, L-6, L-7, and L-8 are in this addendum. These plans are to be used for Bidding. Changes have been shown on each sheet with a cloud around each change and the plan sheet is marked with a delta #1. The contractor will be responsible for all the scope of work changes. Please bid 25 Traffic Loops on bid item #46. The spread sheet on Plan Sheet C-5 does not reflect this quantity. The contractor is responsible to purchase the IT Pipes software for the CCTV of the sewer lines. No Substitute will be accepted by the City of Monrovia. The City of Monrovia will accept A.Y. McDonald brass water service parts for this project. Attached is a copy of the Bids Analysis in spread sheet form of the Original South Area Bid on November 4, This is included for information only. Please see the attached Revised Bid Schedule. Quantities, units, and titles changes have been denoted in red print. This Revised Bid Schedule is required to be submitted in the bid. Failure to use the Revised Bid Schedule will render your submitted Bid non-responsive. An Acknowledgement sheet is attached to this addendum for bidders to certify that they have received and read all addenda information for this project. This sheet must be attached to the official/submitted bid. The following Specifications of the Special Provisions have been revised and/or added (in red): Remove Concrete behind Curb Remove concrete behind curb in accordance with the requirements of section c Removal and Disposal of Materials of the SSPWC. The contractor is to provide concrete sawcut between the back of curb and gutter and the concrete that is to be removed. Removed material must be hauled to a City approved recycling facility Measurement and Payment ENGINEERING SURVEYING TESTING INSPECTION US Highway 18 Apple Valley, CA t) f) w)

2 Remove concrete behind curb will be paid for at the lineal foot price and such payment shall be Irrigation Irrigation to all plantings shall be per plans and per landscape specification section Landscape Irrigation in Appendix X Landscape Specification and per industry standards. The contractor is to hot tap the water main, provide, and install water service line to water meter location and provide water service line to irrigation control devices. One hot tap will be required at the Point of Connection POC just west of the bus stop at STA The City of Monrovia will provide the water meters. The contractor will provide and install all irrigation apparatus including: master valve, backflow preventer with vandal resistant stainless steel enclosure, quick coupler, pressure regulator, ball valves, irrigation pipe lines, sleeves, irrigation control wires, control valves, and sprinklers, emitters, and dripper line to all plants per the plans and specifications Measurement and Payment Irrigation will be paid for at the lump sum price and such payment shall be considered full compensation for all materials, labor, equipment, tools, and all other incidentals necessary to accomplish this item of work and no further compensation will be allowed Irrigation Controller Irrigation Controller shall be per plans and per landscape specification section Landscape Irrigation in Appendix X Landscape Specification. The contractor is to provide and install a LEIT 4000 Controller 8 stations manufactured by DIG Corporation or approved equal. This controller is powered by ambient light. The controller specification may be viewed at the following web site: station-controllers. The contractor shall provide and install a concrete base for the proper and sound installation of the controller as called for in the controller specifications Measurement and Payment Irrigation controller will be paid for at the unit price per each and such payment shall be Export Dirt Export Dirt from sidewalk area shall be removed from the project site by the contractor per section Surplus Material of the SSPWC. This material will need to be exported from the site to make room for the concrete sidewalk. All export /material must be hauled to an approved site that will accept this material Measurement and Payment Export dirt from sidewalk area will be paid for at the unit price per cubic yard and such payment shall be considered full compensation for all materials, labor, equipment, tools, and all other incidentals necessary to accomplish this item of work and no further compensation will be allowed Certification of proper removal of earthwork shall be provided to the City prior to payment Construct (2 ) AC Pavement

3 Where scheduled for in this project, conventional HMA wear course shall be PG All asphalt oils shall be certified by the Caltrans Certification Program. The wear course shall conform to the 1/2 maximum, medium grading specified in Section 203-6, Asphalt Concrete, of the SSPWC and be 2 thick with a tact coat between the courses. The mix design shall be submitted to and approved by the Engineer prior to producing any asphalt concrete for this project. Material submittal test results shall be current to within a 6 month period. The contractor shall furnish to the Engineer or representative at the time of delivery of the material to the job site a legible copy of a licensed weigh master's certificate showing gross, tare, and net weights of each truck load of asphalt concrete mixture. When an automatic batching system is used, the licensed weigh master's certificate may show only the net weight of material in the truckload. Failure of the contractor to provide a certificate to the Engineer by the end of the day on which the material represented by such certificate is delivered to the job site may, at the discretion of the Engineer, result in the forfeiture of all payments for such materials, including any labor and equipment costs included in the price for furnishing and placing the asphalt concrete. Surface temperatures shall be 60 degrees Fahrenheit and rising with an ambient temperature of 50 degrees Fahrenheit and rising for all paving operations. Reclaimed Asphalt Pavement (RAP) shall not exceed 15% in any HMA mix design. When quantities are available, RAP shall be purchased from the Agency at the industry rate. A test strip shall be constructed at the start of paving operations to establish a rolling pattern. The established rolling pattern shall be maintained throughout the paving operation. Pavement density requirements shall be 92% to 96% Theoretical Maximum Density on conventional mixes and 91% to 96% Theoretical Maximum Density on rubber mixes. Longitudinal joint density requirements shall not be lower than 2% of the required mat density and shall be constructed using a notched wedge joint. An approved tack coat shall be applied to all longitudinal and transverse joints with sufficient time to break. For multiple lift pavement operations, longitudinal and transverse joints shall be staggered by a minimum of 6-inches. Misc. Base shall be constructed by the preparation of a pulverized miscellaneous base in accordance with the requirements of Section Pulverized Miscellaneous Base of the SSPWC. Base material shall consist of asphalt concrete that has been pulverized in place and may contain underlying base material or subgrade soil free of any detrimental quantity of deleterious material. Base material shall be prepared by water conditioning and then compacting for acceptance of AC pavement in accordance with the requirements of Section 301 Placement of Base Materials of the SSPWC. Scarification is not required. Subgrade preparations shall conform to the requirements of section of the SSWPC Measurement and Payment AC pavement over pulverized base shall be paid at the unit price per square foot of surface area, and such payment shall be considered as full compensation for all saw-cutting, pulverizing, removing interfering roots and vegetation, blending of material, and for furnishing all labor, materials, equipment, and any other incidentals necessary to complete this item of work and no further compensation will be allowed

4 8-205 Construct (4 ) AC Pavement over 6 Pulverized Misc. Base Where scheduled for in this project, conventional HMA wear course shall be PG All asphalt oils shall be certified by the Caltrans Certification Program. The wear course shall conform to the 1/2 maximum, medium grading specified in Section 203-6, Asphalt Concrete, of the SSPWC and be 2 thick with a 2 thick ¾ maximum grading in the asphalt base course with a tact coat between the courses. The mix design shall be submitted to and approved by the Engineer prior to producing any asphalt concrete for this project. Material submittal test results shall be current to within a 6 month period. The contractor shall furnish to the Engineer or representative at the time of delivery of the material to the job site a legible copy of a licensed weigh master's certificate showing gross, tare, and net weights of each truck load of asphalt concrete mixture. When an automatic batching system is used, the licensed weigh master's certificate may show only the net weight of material in the truckload. Failure of the contractor to provide a certificate to the Engineer by the end of the day on which the material represented by such certificate is delivered to the job site may, at the discretion of the Engineer, result in the forfeiture of all payments for such materials, including any labor and equipment costs included in the price for furnishing and placing the asphalt concrete. Surface temperatures shall be 60 degrees Fahrenheit and rising with an ambient temperature of 50 degrees Fahrenheit and rising for all paving operations. Reclaimed Asphalt Pavement (RAP) shall not exceed 15% in any HMA mix design. When quantities are available, RAP shall be purchased from the Agency at the industry rate. A test strip shall be constructed at the start of paving operations to establish a rolling pattern. The established rolling pattern shall be maintained throughout the paving operation. Pavement density requirements shall be 92% to 96% Theoretical Maximum Density on conventional mixes and 91% to 96% Theoretical Maximum Density on rubber mixes. Longitudinal joint density requirements shall not be lower than 2% of the required mat density and shall be constructed using a notched wedge joint. An approved tack coat shall be applied to all longitudinal and transverse joints with sufficient time to break. For multiple lift pavement operations, longitudinal and transverse joints shall be staggered by a minimum of 6-inches. Misc. Base shall be constructed by the preparation of a pulverized miscellaneous base in accordance with the requirements of Section Pulverized Miscellaneous Base of the SSPWC. Base material shall consist of asphalt concrete that has been pulverized in place and may contain underlying base material or subgrade soil free of any detrimental quantity of deleterious material. Base material shall be prepared by water conditioning and then compacting for acceptance of AC pavement in accordance with the requirements of Section 301 Placement of Base Materials of the SSPWC. Scarification is not required. Subgrade preparations shall conform to the requirements of section of the SSWPC Measurement and Payment AC pavement over pulverized base shall be paid at the unit price per square foot of surface area, and such payment shall be considered as full compensation for all saw-cutting, pulverizing, removing interfering roots and vegetation, blending of material, and for furnishing all

5 labor, materials, equipment, and any other incidentals necessary to complete this item of work and no further compensation will be allowed AC Pavement Patch AC pavement patch shall be constructed per the following: where scheduled for this project, conventional HMA wear course shall be PG All asphalt oils shall be certified by the Caltrans Certification Program. The wear course shall conform to the 1/2 maximum, medium grading specified in Section 203-6, Asphalt Concrete, of the SSPWC, and be 2 thick with a 2 thick ¾ maximum grading in the asphalt base course with a tact coat between the courses. The mix design shall be submitted and approved by the Engineer prior to producing any asphalt concrete for this project. Material submittal test results shall be current to within a 6 month period. The contractor shall furnish to the Engineer or representative at the time of delivery of the material to the job site a legible copy of a licensed weigh master's certificate showing gross, tare, and net weights of each truck load of asphalt concrete mixture. When an automatic batching system is used, the licensed weigh master's certificate may show only the net weight of material in the truckload. Failure of the contractor to provide a certificate to the Engineer by the end of the day on which the material represented by such certificate is delivered to the job site may, at the discretion of the Engineer, result in the forfeiture of all payments for such materials, including any labor and equipment costs included in the price for furnishing and placing the asphalt concrete. Surface temperatures shall be 60 degrees Fahrenheit and rising with an ambient temperature of 50 degrees Fahrenheit and rising for all paving operations. Reclaimed Asphalt Pavement (RAP) shall not exceed 15% in any HMA mix design. When quantities are available, RAP shall be purchased from the Agency at the industry rate. A test strip shall be constructed at the start of paving operations to establish a rolling pattern. The established rolling pattern shall be maintained throughout the paving operation. Pavement density requirements shall be 92% to 96% Theoretical Maximum Density on conventional mixes and 91% to 96% Theoretical Maximum Density on rubber mixes. Longitudinal joint density requirements shall not be lower than 2% of the required mat density and shall be constructed using a notched wedge joint. An approved tack coat shall be applied to all longitudinal and transverse joints with sufficient time to break. For multiple lift pavement operations, longitudinal and transverse joints shall be staggered by a minimum of 6-inches. Subgrade preparations shall conform to the requirements of section of the SSWPC Measurement and Payment Patch AC Pavement will be paid for at a unit price per square foot and such payment shall be End of Addendum #1