Suffolk-Drive-Drainage-Improvements-Project-Description.pdf

Suffolk Drive Drainage Improvement Project

Project Description Project Location The project site is located on Suffolk Drive in the Richmond Hills subdivision off North U.S. Hwy 25 in Greenville, South Carolina. The project site occupies land on the County right of way and on private properties. The contractor shall take all necessary measures to ensure the safety of the public and prevent damage to County roads/infrastructure, utilities, and private property.

Project Scope The main purpose of the project is to improve the drainage system on the roads and between the homes.

The work consists of the demolition/removal of trees, fences, walls and pavement and the installation of new storm drainage lines and catch basins. Replacement of driveways, fences, and asphalt pavement will follow installation of the drainage system. Site stabilization shall include fine grading and grassing or placement of pine straw on the disturbed areas. The County shall provide staking of the new storm drainage system including alignments and elevations, therefore, a line item for construction staking is not included in the bid schedule.

Utility Protection The contractor is required to contact utility providers and coordinate the location of utilities lines located in the construction zone, including but not limited to: gravity sewer main, sewer services, gas main, gas services, water main, water services, power lines, and communication cables. The contractor shall pothole underground utilities as necessary and shall be responsible for any damage occurring to utility lines on the project site and shall be responsible for the required repairs at the contractor’s expense.

Project Specifics The project includes, but is not limited to, the following:

Demolition/removal/disposal of:

• Sections of the existing drainage system, as shown on the plans

• Asphalt pavement, as shown on the plans

• Concrete driveways, as shown on the plans

• Fences and gates, as shown on the plans

• Cinder block walls, as shown on the plans

• Selected trees incl stump grinding, as shown on the plans

• Other demolition items as shown on the plans or as necessary to complete the project Installation of new drainage improvements including:

• ±60 LF of 15” dia. HPP

• ±100 LF of 24” dia. HPP

• ±60 LF of 30” dia. HPP

• ±185 LF of 29"x42” aluminum arch pipe

• 1 each 4x4 T9 yard inlets

• 2 each 5x5 T9 yard inlets Replacement/Reinstallation of:

• Asphalt roadways

• Asphalt driveways

• Chain link fences

• Wood privacy fences

• Gates

• Mailboxes Site Stabilization consisting of:

• Silt fences during construction, as necessary

• CB inlet protection during construction, as necessary

• Class C riprap w/ geotextile fabric

• Fine grading & grassing of all disturbed areas

• Pine Straw in lieu of grassing

Miscellaneous Items including:

• Contractor shall follow all Greenville County and SCDOT requirements.

• Contractor shall ensure proper notification and coordination with residents before starting activities that impact the residents access or use of their property.

• Contractor is responsible for obtaining, maintaining and restoring the staging area.

• Contractor shall notify each property owner prior to saw cutting and removing driveway in order to move vehicles out.

• Contractor shall backfill new pipes with select material and/or stone as shown on the plans and as instructed by the design engineer.

Sediment Control Measures The contractor is responsible for erosion and sediment control. Please refer to sheets Dt-1 and Dt-2 for erosion and sediment control measures to be installed on the project site as needed to meet regulatory standards and minimize impact to downstream properties. Sediment Control Measures (SCMs) to be used on the site consist of, but are not limited to the following:

• Silt Fences. The contractor shall install silt fences as needed to contain sediment from construction activities.

• Sediment Tubes. Sediment tubes shall be placed in front of new curb inlets and plain end pipe inlets as necessary.

• Temporary Check Dam. A temporary check dam shall be placed at the downstream end of the new outfall to contain sediment from site disturbance, if necessary.

• Inlet Protection. The contractor shall place inlet protection around new slab-top yard basins as necessary.

• Riprap. Riprap on geotextile fabric shall be placed as shown on the plans.

• Grassing. Grassing of all disturbed areas on the project site has been specified with appropriate mixtures of seed varieties based on the planting season. Where applicable, the contractor shall coordinate with each property owner about the grassing type and schedule.

Project Duration The contractor shall be allowed the contract time stated on Open Gov for substantial completion of the project to include tree removal, demolition, drainage system installation, roadway patching, driveways, fences, fine grading, clean up and permanent grassing and all other items shown on the project plans.

Final punch list items, removal of erosion control devices and project close out shall be accomplished within 15 days after substantial completion.

SPECIFICATIONS REFERENCE:

1. Definition: Specifications pertain to written standards and requirements for materials, construction procedures, testing, quality control, and workmanship for the project. The specifications to be used for the project shall include, but are not be limited to the following:

2. County Standard Specifications. Greenville County Standard Specifications shall take precedence over the 2007 edition of the South Carolina State Highway Department Standard Specifications for Highway Construction whenever there is a conflict between the two specifications.

Refer to the attached document entitled "Greenville County Public Works Division Standard Specifications", latest revision, including:

Section 02110 - Site Clearing Section 02200 - Earthwork Section 02270 - Erosion Control Section 02720 - Storm Drainage Section 02830 - Fencing and Gates Section 02930 - Lawns and Grassing Section 02931 - Landscaping

3. Construction Plans: Project Plans, specifications are shown as notes, text, and details in the project design plans.

4. SCDOT Standard Specifications: All workmanship and materials provided on the project shall conform to the requirements contained in the South Carolina Department of Transportation Standard Specifications for Highway Construction (Edition of 2007) including applicable addenda and errata issued by SCDOT and with amendments as noted in the General Conditions.

5. SCDOT Supplemental Specifications: All workmanship and materials provided on the project shall conform to all applicable supplemental specifications issued by SCDOT.

6. Greenville County Supplemental Specifications: Please refer to the information below addressing rock excavation and blasting.

Rock Excavation

a. Rock will be defined as follows:

General Excavation - any material which cannot be excavated with a single tooth ripper drawn by a crawler tractor having a minimum draw bar pull rated at not less than 56,000 pounds.

Trench Excavation - any material which cannot be excavated with a track mounted backhoe with a bucket curling force of not less than 20,760 pounds. The contractor shall notify the County project manager in writing when rock is encountered to verify rock excavation prior to any rock removal.

b. Rock Quantity Measurement - All rock quantities must be observed, measured, and verified by the County project manager or representative prior to backfilling. In trenches, credit will be given for the rock excavated to a maximum depth of 6" below the pipe invert and a maximum of 18" on each side of the pipe. Rock excavated outside of this zone will not credit.

c. Blasting - If conditions are such that blasting or any use of explosives is required, the Contractor, prior to blasting, shall submit to the County Engineer satisfactory evidence of blasting and explosive insurance in the amounts of bodily injury and property damage insurance required in the Special Conditions and shall provide to the satisfaction of the County Engineer the experience and capability of the Contractor's organization to safely handle and perform such operations. Handling and storing of blasting materials shall be performed only by qualified persons skilled in such work.

Adequate precautions shall be taken to prevent accidents, injury to persons or damage to property.

Qualifications of blasting operation personnel and safety precautions shall be in full compliance with all codes governing such operations and shall be approved by the County Engineer. Full responsibility for all blasting operations shall remain with the Contractor, and he shall make good any damage that may result.

7. SCDOT Standard Drawings: The contractor shall comply with current Standard Drawings (English version) issued by SCDOT.

8. Unspecified Items: Any items shown in the construction plans which are not covered in the SCDOT Standard Specifications shall comply with the current County of Greenville Engineering Department Standard Specifications.

9. Precedence: Any apparent discrepancies between project plans and specifications should be called to the attention of the County Project Manager for resolution. Until resolution is issued in written form, project plans have precedence over specifications.

10. Special Conditions:

A. Underground Utility Protection: Existing underground utilities on the public and private lands may not be shown or, if shown, they may not be shown in their entirety. It is the Contractor’s responsibility to coordinate with the local utility locating service and/or the utility providers to locate all underground utilities within the project limits, and it is the Contractor’s responsibility to take whatever precautions necessary during construction to safeguard the condition of the underground utilities.

B. Contact Agencies: The following is a list of contacts for the project. The names and numbers are subject to change, so the Contractor is responsible for verifying the information provided below:

County Project Manager – Shelby Saunders (864) 982-7155 Greer CPW - Kevin Reardon, (864) 848-5500, kevin.reardon@greercpw.com Western Carolina Sewer Authority - Zac Dukes, (864) 299-4020 EXT 213 Metro Sewer District - Richard Riddle, (864) 277-4442 Greenville Water System - Wayne Benson, (864) 241-6100 Piedmont Natural Gas - Carlos Roper, (864) 286-7882 Duke Energy Corporation - Tom Ramsey, (864) 230-1226 AT&T - Mike Nat, (864) 298-1856 Charter Communications - Derry Rollins, (864) 209-0379

C. Contract Time: All work specified herein must be substantially completed in the contract time stated on Open Gov. If the contractor fails to substantially complete the work within the specified time, liquidated damages per SCDOT Specifications Section 108.9 may be assessed up to value of the contract (total bid). The penalty may be drawn from any payment due, or the performance bond, at the discretion of the County of Greenville.

D. Inspections, Certifications, and Testing Responsibility: If required, the parties responsible for providing inspections, certifications and testing on the project are shown in the table below. The costs for providing inspections, testing and certifications including labor, equipment, transportation, consumables, and any other incidental costs shall be borne by the responsible party. Any repeat inspections, certifications, or testing required for rework and/or to rectify substandard work or materials on the project shall be provided by and paid for by the responsible party.

Item or Activity Performed By Responsible Party

Field Testing Contractor/Independent Laboratory

Contractor and County

Road Sub grade (proof-roll) Contractor Contractor

Asphalt (nuclear gauge) Independent Laboratory Contractor

Concrete Testing Conc. Supplier or Laboratory Contractor and County

Material Certifications Material Supplier Contractor

Asphalt Plant Certification Independent Laboratory Contractor

Project Daily Safety Report Project Superintendent Contractor

Work zone Traffic Control Review Project Superintendent Contractor

CEPSCI Inspections Licensed CEPSCI Inspector Contractor

Shop Drawings Submitted by Supplier/Contractor Reviewed by County

E. Permitting Responsibility: On this project, the parties responsible for regulatory permitting are shown in the table below. The costs for preparing, submitting, revising and obtaining the necessary permits including labor, equipment, transportation, consumables, and any other incidental costs shall be borne by the responsible party.

Item Submitted By Responsible Party

SCDES Land Disturbance Permit Engineer County

401/404 Permit Engineer County

SCDOT Encroachment Permit Engineer County

Co-Permittee Agreement Contractor Contractor

Work zone Traffic Control Plan and Detour Project Plans Contractor

SCDES Permit for offsite borrow pits Contractor Contractor

11. Change Order Requests. The contractor shall submit a change order request letter to the County Engineering & Maintenance Division for all change order work.

A. Change Order Request Letter. The change order request letter shall consist of: company letterhead, company mailing address, date, recipient (Greenville County Engineering & Maintenance Division, 301 University Ridge, Suite S-3000, Greenville, SC 29601), project name, *change order request number, **change order request amount, a statement that "all change order work shall be approved by the County project manager or design engineer prior to performing the work.", sender name, title, and signature.

*change order request numbers shall be numbered sequentially starting with #1.

**change order request amount shall be equal to the total cost of work for the change order. If the change order request includes multiple line items, the contractor shall include a separate sheet for tabulating the line item quantities and costs (see below).

B. Quantity/Cost Tabulation. As mentioned above, the contractor shall include a separate sheet for tabulating multiple line item quantities and costs. Change orders for increased quantities on existing line items in the project shall based on the contract unit costs. New items with costs not already specified in the contract shall be tabulated with quantities and unit costs for these new items. Lump sum change order items shall be shown as a quantity of 1.0 and a unit cost equal to the total cost of the item.

12. Progress Payment Submittals: The contractor shall submit regular progress payment requests for work performed during the progress payment periods. All progress payment requests shall include the following:

A. Pay Request Letter. The pay request letter shall consist of: company letterhead, company mailing address, date, recipient (Greenville County Engineering & Maintenance Division, 301 University Ridge, Suite S-3000, Greenville, SC 29601), project name, *progress payment request number, **progress payment request amount, a statement that "all work covered under this progress payment request has been completed per the project plans and specifications.", sender name, title, and signature.

*progress payment request numbers shall be numbered sequentially starting with #1.

**progress payment request amount shall be equal to the total cost of work performed during the progress payment period minus retainage (10%). Note: the final progress payment request amount shall be equal to the total cost of work performed during the progress payment period plus the total amount of retainage withheld from earlier progress payments.

B. Cost Tracker. The County Engineering & Maintenance Division has adopted a standard spreadsheet format for tracking line item quantities and costs on the project. Columns in the tracker are divided into progress payment periods including a column for quantities and a column for extended costs. The standard tracker format shall be made available to the contractor, and the contractor shall use the tracker to tally line item quantities and costs for each pay period. There is line at the bottom of the tracker for deducting 10% retainage from the total costs for each pay period, and this line also provides a means for adding the total withheld retainage to the final pay request amount.

C. Change Orders. If change order work is performed during a pay period, the change order shall be entered as new line item on the cost tracker and the percent complete for the change order during the pay period shall be indicated. 10% retainage shall be deducted from change order work unless the change order work is being billed on the final pay request.

D. AIA forms #G702 & #G703. The contractor is welcome to submit AIA forms with a progress payment request submittal, but these forms are optional and shall not take the place of the request letter and cost tracker. If the contractor choses to submit AIA forms #G702 & #G703, the forms shall be prepared according to the guide below:

Guide for Filling Out AIA #G702 & #G703 #G702

• Line 1. Original contract price This field is simple because it will never change from pay app to pay app. The original contract price is exactly as it sounds, the original contract price. This should be the amount specified in your contract. It shouldn't include any disputed claims, change orders, or any other amounts.

• Line 2. Net change by change orders A change order is an agreement to add or deduct work, made between you and the party that hired you. It happens on almost every project since construction rarely goes exactly as planned. Sometimes work is both added and deducted in the same period.

Line 2 could be positive or negative. A positive number means that you added more work than the original contract required. A negative number means that you deducted, or reduced, the amount of work from the contract.

You will calculate this number by filling out the "Change Order Summary" table at the bottom, left-hand side of the form. We'll explain this section more a bit further down.

• Line 3. Contract sum to date The "contract sum to date" is the original contract price (from line 1) combined with the net change by change orders from line 2. To get this figure, add line 2 to line 1 (if line 2 is a negative number, adding it to line 1 will reduce the total amount).

The result is the total amount to be paid over the course of the project, as of today.

• Line 4. Total completed and stored to date This is where the Continuation Sheet comes in handy; you'll need to complete it in order to get the total for line 4.

A Continuation Sheet is similar to (and works with) a schedule of values. The schedule of values is an agreement showing all of the work to be completed during the project, and the associated cost for each line item.

The Continuation Sheet shows an itemized list of work you've completed during the period, along with the "scheduled value" or cost. The costs should match those on the Schedule of Values. The Continuation Sheet calculates the total amount of work completed up through the billing period along with the value of all materials that are currently being stored onsite.

When filling out the G702, you can pull the amount for line 4 straight from "Grand Total" on the Continuation Sheet.

• Line 5. Retainage Retainage (or retention) is a percentage of your payment that the GC or owner will hold until the project or job is complete. Your contract should provide detail about the retainage percentage, which typically falls somewhere between 5–10%. Keep in mind that many states require variable retention. This means that retainage is reduced or paid out once a certain percentage of the contract is completed.

In this section, you write the amount of the percentage withheld in lines 5a and 5b.

Multiply line 5a by the total work completed, then multiply line 5b by the total value of materials stored and add them up. That number is the full amount of retainage that is withheld through the current application.

• Line 6. Total earned less retainage Take the work completed and materials stored amount (line 4) and subtract the total amount of retainage that was calculated in line 5. This will give you the total billable amount that you've earned up until this point.

• Line 7. Less previous certificates for payment On this line, you will subtract previous payments that you have already received. When the architect or property owner approves your pay app, they will issue a certificate of payment. This is essentially the approval of your request, and receipt for payment.

If this is the first pay application on the project, this will be zero. However, if it's a subsequent application, you will put the amount from line 6 of the previous certificate.

• Line 8. Current payment due To get this figure, subtract line 7 from line 6. This line represents how much money you are expecting to bill for in the current period. The total billable amount for the pay app will be the difference between the "total earned less retainage" on line 6 and the "previous certificates for payment" indicated in line 7.

• Line 9. Balance to finish, including retainage This amount is merely the remaining contract price that will still be due once the architect or owner approves the current payment application. Just subtract the total contract sum to date from the "total earned less retention" in line 6. The result is the amount outstanding under the contract.

• Change order summary The results of this section will determine what number to use on line 2 of the payment application. The first line requires all approved change orders prior to the billing cycle that the current application covers. The second line will include any approved change orders occurring during the current billing cycle. Remember, change orders don't just add work.

They can also be deductive change orders. So be sure to provide all additions and deductions caused by the approved change orders. Once you calculate the net changes, plug this number into line 2.

#G703

• Columns A, B and C. These columns should be completed by identifying the various portions of the Project and their scheduled values consistent with the schedule of values submitted to the Architect at the commencement of the Project or as subsequently adjusted. The breakdown may be by sections of the Work or by Subcontractors and should remain consistent throughout the Project. Multiple pages should be used when required. Column C should be subtotaled at the bottom when more than one page is used and totaled on the last page. Initially, this total should equal the original Contract Sum. The total of column C may be adjusted by Change Orders during the Project.

• Column D. Enter in this column the amount of completed Work covered by the previous application (columns D & E from the previous application). Values from column F (Materials Presently Stored) from the previous application should not be entered in this column.

• Column E. Enter here the value of Work completed at the time of this application, including the value of materials incorporated in the project that were listed on the previous application under Materials Presently Stored (column F).

• Column F. Enter here the value of Materials Presently Stored for which payment is sought. The total of the column must be recalculated at the end of each pay period. This value covers both materials newly stored for which payment is sought and materials previously stored which are not yet incorporated into the Project. Mere payment by the Owner for stored materials does not result in a deduction from this column. Only as materials are incorporated into the Project is their value deducted from this column and incorporated into column E (Work Completed—This Period.)

• Column G. Enter here the total of columns D, E and F. Calculate the percentage completed by dividing column G by column C.

• Column H. Enter here the difference between column C (Scheduled Value) and column G (Total Completed and Stored to Date).

• Column I. This column is normally used only for contracts where variable retainage is permitted on a line-item basis. It need not be completed on projects where a constant retainage is withheld from the overall contract amount.

• Change Orders. Although Change Orders could be incorporated by changing the schedule of values each time a Change Order is added to the Project, this is not normally done. Usually, Change Orders are listed separately, either on their own G703 form or at the end of the basic schedule. The amount of the original contract adjusted by Change Orders is to be entered in the appropriate location on the G702 or G732 form, whichever is applicable.

(end of document)