EXHIBIT 5 US101 Coos County Stockpile Site - Specs.pdf

ATTACHMENT A

SPECIAL PROVISONS & SPECIFICATIONS FOR

US101: COOS COUNTY STOCKPILE SITE PROJECT

SCOPE

The work to be completed under this Contract is located along the Oregon Pacific Coast Highway (US101) in Coos County, OR, which consists of supplying the materials, equipment, labor and incidentals required to perform the following tasks as described in the Contract plans and specifications:

1. Install & Maintain Erosion Control.

2. Install 130 Feet of 18” HDPE Culvert Pipe

3. Install Culvert Embankment & Slope Protection (Inlet & Outlet) Class 200 Riprap

4. Perform General Excavation as shown on Sheet 1 for the ditches on both sides of the roadway and sheet 2 for the roadway itself.

5. Build the roadway using subgrade geotextile, 12 inches of aggregate base.

6. Perform additional and incidental work as detailed in the Contract plans, specifications and as directed.

PROJECT INFORMATION

General information pertaining to this Project may be obtained from the following Project Manager or approved representative:

Jessica Spann, District Operations Coordinator 307 Highway 42 Phone: (541) 315-5999 Email: Jessica.Spann@odot.oregon.gov

APPLICABLE STANDARD SPECIFICATIONS & SPECIAL PROVISIONS

2024 OREGON STANDARD SPECIFICATIONS FOR CONSTRUCTION: The 2024 Oregon Standard Specifications for Construction (“Standard Specifications”) include detailed technical specifications that apply to this ITB and resulting Contract. Some sections of the technical specifications are identified and modified below. Sections of the technical specifications not identified below remain applicable to the Contract according to their original terms. Part 00100 of the Standard Specifications (General Conditions) are not applicable to the Contract; however, if a technical specification (Parts 200 and beyond) references a section from Part 00100, that section from Part 00100 applies to the Contract for purposes of supporting and giving full effect to the technical specification. The Standard Specifications are available online:

2024 OREGON STANDARD SPECIFICATIONS FOR CONSTRUCTION

Silence of Specifications: The apparent silence of the specifications as to any detail, or the apparent omission of a detailed description concerning any point, shall be regarded as meaning that the highest value commercial practices are to prevail and that only materials and workmanship of first quality are to be used

SECTION 00210 – MOBILIZATION

Comply with Section 00210 of the Standard Specifications modified as follows:

Construction

00210.40 Mobilization – delete the last bullet of the bullet list. Obtaining and maintaining access to Doc Express®, and using Doc Express® to submit documents will not be required on this project.

Payment

00210.90 Payment – delete the last sentence in this subsection.

SECTION 00280 - EROSION AND SEDIMENT CONTROL

Comply with Section 00280 of the Standard Specifications modified as follows:

00280.00 Scope - Replace the paragraph that begins "This Work also consists of providing temporary …" with the following paragraph:

This Work also consists of providing temporary erosion and sediment control (ESC) measures and furnishing, installing, moving, operating, maintaining, inspecting, and removing ESC throughout the Project area according to the Standard Drawings, the erosion and sediment control plan (ESCP), the Specifications, or as directed, until the site is permanently stabilized. Included also is the monitoring of weather, of stormwater and receiving waters, the reporting of monitoring observations, the reporting of corrective actions (when necessary) and the updates and revisions of the ESCP, including ESCP cover sheet, necessary to keep it representative of current site conditions and compliant with the NPDES 1200-CA, 1200-CN, OR 1200-C permit if applicable.

Conditions requiring NPDES 1200 permits are as follows:

• Projects with one acre of ground disturbance or more on Agency owned land are regulated under the Agency’s 1200-CA permit.

• When Project Work on Agency owned land disturbs less than one acre, but ground disturbances on non-Agency owned lands combined with Project ground disturbances on Agency owned land total one acre or more the Agency Project Work will be regulated by the Agency’s 1200-CA permit. The Contractor is responsible for acquiring the 1200-C permit for all areas of disturbance on non-Agency owned land.

When the combined areas of disturbance of all Project related activities is less than one acre, no NPDES 1200 permit coverage is required.

Delete the paragraph that begins “When contaminants, pollutants or hazardous materials…”.

Add the following paragraph to the end of this subsection:

The Agency’s NPDES 1200-CA permit is not applicable to this Project. Comply with all applicable conditions of this Section.

00280.01 Abbreviations - Replace this subsection with the following subsection:

00280.01 Abbreviations and Definitions:

BMP - Best Management Practices EMP - Environmental Management Plan ESC - Erosion and Sediment Controls ESCP - Erosion and Sediment Control Plan ESCM - Erosion and Sediment Control Manager

Effective Functioning - Preventing Erosion, controlling Runoff, or controlling Sediment in each location where an ESC is needed so Erosion-related impacts of site construction are mitigated as required.

Erosion - The wearing away of the land surface by water, wind, ice, gravity or other geological agents.

Perimeter Controls - Perimeter Controls include sediment fences, ditches, filter berms in flatter areas, and other methods for preventing Sediment and other construction-generated pollutants from leaving the construction site.

Permanent Stabilization - Maintenance-free measures or methods necessary to prevent Erosion or Sediments from leaving the Project Site.

Runoff - That portion of precipitation that flows from drainage area on the land surface, in open channels or in stormwater conveyance systems.

Sediment - Fragmented material originated from weathering and Erosion of Rock and unconsolidated deposits. Sediment also includes fragmented materials from man-made materials. The material is transported by, suspended in, or deposited by water.

Temporary Stabilization - Covering soil or other measures to prevent Erosion until Permanent Stabilization measures are in place and established.

00280.02 Definitions - Replace this subsection with the following subsection:

00280.02 Submittals - Submit documentation that the compost material meets the requirements of Section 03020 for its intended use and is available for use according to the Project schedule in

00180.41 according to 00150.37, within 30 Calendar Days of Award of the Contract.

00280.04 Erosion and Sediment Control Plan on Agency Controlled Lands - Replace the bullet that begins “Information required under 1200-CA…” with the following bullet:

• Information required under 1200-CA permit, if applicable.

Replace the bullet that begins "When using a Contractor developed …" with the following bullet:

• When using a Contractor developed ESCP, develop, provide, and stamp the ESCP by a professional with one of the following credentials. Include their name and credentials in the

ESCP.

Replace the paragraph that begins "Ensure that the Contractor's construction ESCP …" with the following paragraph:

Ensure that the Contractor's construction ESCP and implementation schedules are prepared by an individual who meets qualifications of 00280.30. Provide a signed copy of the ESCP with individual's name, title, state certifications, and employing firm if different than Contractor's firm.

00280.06 Erosion and Sediment Control Manager - Delete this subsection.

00280.14(a) Plastic Sheeting - Replace the bullet that begins “Plastic Sheeting - Minimum 6-mil thick…” with the following bullet:

• Plastic Sheeting - Minimum 6-mil thick polyethylene plastic sheeting or plastic sheeting that meets or exceeds the performance properties outlined in ASTM D4397.

Replace the bullet that begins “Rock – Class 50…” with the following bullet:

• Class 50 riprap according to Section 00390.

00280.90 Payment - Replace the paragraph that begins "In item (f), the word …" with the

In item (f), the word "Hydromulch", "Straw", or "Compost" is inserted in the blank.

Replace the paragraph that begins "In items (g), the …" with the following paragraph:

In item (g), the type is inserted in the blank.

Replace the paragraph that begins "Payment will be payment …" with the following paragraph:

Payment will be payment in full for furnishing and placing all Materials, and for providing all Equipment, labor, and Incidentals necessary to complete the Work as specified.

SECTION 00290 - ENVIRONMENTAL PROTECTION

Comply with Section 00290 of the Standard Specifications modified as follows:

00290.00 Scope - Replace the paragraph that begins “If any provision of the Specifications …” with the following paragraph:

If any provision of the Specifications appears to conflict with one or more Laws, the more stringent requirement applies, unless the Engineer directs otherwise in situations where the Specifications are more stringent.

SECTION 00330 - EARTHWORK

Comply with Section 00330 of the Standard Specifications modified as follows:

00330.00 Scope - Replace the paragraph that begins "The term "earthwork" will be…" with the following paragraph:

The term "earthwork" is used as a general term to designate the Work included within the scope of this Section.

00330.01 Lines, Grades, and Cross Sections - Replace the paragraph that begins "All earthwork…" with the following paragraph:

Conform all earthwork to the lines, grades and Cross Sections established.

Replace the paragraph that begins "Roadbed Cross Sections …" with the following paragraph:

Roadbed Cross Sections are subject to variation from the Typical Sections , if directed, to:

00330.02 Definitions - Replace the paragraph that begins "Construction Slide - A Slide outside …" with the following paragraph:

Construction Slide - A Slide outside the designated limits of excavations, or below the foundation within designed limits of embankments or within embankments, that occurs after excavation or embankment construction starts and before Final Acceptance of the Contract.

00330.03(a) General - Replace this subsection, except for the subsection number and title, with the following:

Except as provided in 00330.00, perform all earthwork on either the excavation basis or the embankment basis. The basis of performance for each earthwork Pay Item is specified in the Special Provisions and the Contract Schedule of Items.

00330.04 Sources of Borrow - Replace this subsection, except for the subsection number and title, with the following:

(a) Agency-Furnished Borrow - Use Materials obtained from Agency-provided sources lying outside of, separated from and independent of planned Roadbed excavations, or other required excavations within the Project limits, only when called for by the Contract or when specifically directed. (See 00330.41(d).)

(b) Contractor-Furnished Borrow - Unless otherwise specified or directed, furnish all Borrow. Use sources that are wholly outside of and beyond the limits of Agency-Controlled Lands. Acquire at Contractor's own expense. The provisions of 00160.60 and 00160.80 apply.

00330.10 Selected Materials - Replace this subsection, except for the subsection number and

When the Contract contains a Pay Item "Extra for Selected ____ Material", furnish the Material from required excavations. The Specifications for the selected Materials are in the Special Provisions, if different than specified in these Specifications. If other provisions of this Section call for selecting or sorting Material for various parts of the Work, select and sort the Materials to meet the directed requirements.

00330.16(a) Requirements - Replace the paragraph that begins "If the 1" - 0 portion exceeds …" with the following paragraph:

If the 1" - 0 portion exceeds 10 percent of the total volume by the Engineer's visual examination, the 1" - 0 material will be randomly sampled for testing. The Agency will perform the wet sieve test, according to AASHTO T 11, on the sampled material. The limit on the amount of material passing the No. 200 sieve is not to exceed 5.0 percent by weight.

00330.16(b) Control Sample - Replace this subsection, except for the subsection number and title, with the following:

Provide, at a location acceptable to the Engineer, in close proximity to the Project, at least a 5-cubic yard sample of stone embankment meeting the gradation specified. This sample is used as a frequent reference for judging the gradation of the material supplied.

00330.40(a) Quantities - Replace the paragraph that begins "The Agency makes no guarantee …" with the following paragraph:

The Agency makes no guarantee or representation by implication or otherwise, that any Material available on the Project site is suitable for incorporation into any portion of the Project. No Material is considered unsuitable on the sole basis that special or additional processing or handling is required to make it suitable for incorporation into the Project.

00330.40(c) Avoidance and Correction of Detrimental Operations - Replace the paragraph that begins "Perform all operations involved …" with the following paragraph:

Perform all operations involved in excavating, hauling and placing of earthwork Materials so no damage or detriment to the completed or partially completed Work results. At all times provide sufficient drainage of completed or partially completed earthwork to prevent damage or loss due to rainfall, surface water or any other cause. In all cases, take proper precautions to ensure that embankment construction and filling do not move, endanger or cause undue strain or stress to any Structure or adjacent ground. Do not construct temporary and final embankment slopes within any Cross Section steeper than the Slope staked for that Cross Section.

00330.41(a)(3) Unsuitable Materials - Replace this subsection, except for the subsection number and title, with the following:

Unsuitable Materials encountered in required excavations are classed as waste material and disposed of according to 00330.41(a)(5).

SECTION 00350 - GEOSYNTHETIC INSTALLATION

Comply with Section 00350 of the Standard Specifications modified as follows:

00350.01 Definitions - Add the following definition:

Geomembrane - An essentially impermeable geosynthetic composed of one or more synthetic sheets.

Replace the definition “Geogrid” with the following definition:

Geogrid - A geosynthetic used for reinforcement that is formed by a regular network of tensile elements with apertures of sufficient size to allow strike-through of surrounding Soil, Rock or other geotechnical material.

Replace the definition “Seam Type” with the following definition:

Seam Type - A designation of Geotextile positioning and rows of stitching in a specified sewn seam as shown (for example Type SSn-1, “J” Seam SSn-1). The designated method of joining Geomembrane sheets (for example thermal fusion welding, extrusion welding).

00350.40 General - Replace this subsection, except for the subsection number and title, with the following:

Furnish geosynthetic from the manufacturer and protect against damage and deterioration.

Prevent excessive mud, wet concrete, epoxy and like materials from coming in contact with the geosynthetic. Store all Geosynthetics in a dry place and off the ground at all times according to ASTM D4873. Cover all Geosynthetics with a dark protective covering when received. The geosynthetic will be rejected for use if the Engineer determines it has defects or deterioration or has been damaged.

00350.41(a)(3)(a) General - Replace the paragraph that begins "Sew field seams with polymeric …" with the following paragraph:

Sew field seams with polymeric thread consisting of polypropylene, polyester or kevlar, and as resistant to deterioration as the Geotextile being sewn. Use a color of thread that contrasts with the Geotextile being sewn so the stitches are exposed for inspection when the Geotextile is placed. Meet the testing requirements of 02320.11(b).

00350.41(a)(3)(b) Stitch Requirements - Replace the paragraph that begins "Use two rows of lock-type …" with the following paragraph:

Use two rows of lock-type stitching, Type 401, spaced 1/2 inch apart with a tolerance of plus or minus 1/4 inch as shown, to make the seams. Do not cross stiches except for restitching.

00350.41(f)(2) Weather Limitations - Replace this subsection, except for the subsection number and title, with the following:

Do not place sealant and Geotextile unless the weather limitations of 00745.40 are met, as appropriate, except the minimum air temperature is 50 °F for paving grade asphalt sealant placement and 60 °F for asphalt emulsion sealant placement.

00350.41(f)(3) Surface Preparation - Replace the paragraph that begins "Prepare the Pavement surface …" with the following paragraph:

Prepare the Pavement surface that the sealant is to be placed according to 00730.42 and the following:

00350.41(f)(4) Sealant Application - Replace the paragraph that begins "Uniformly spray the asphalt …" with the following paragraph:

Uniformly spray the asphalt sealant at normal application temperature by means of a pressure distributor according to 00350.21 on the prepared dry Pavement surface. Apply at the rate of 0.20 - 0.30 gallon per square yard, or as recommended by the Geotextile manufacturer or as directed.

Replace the paragraph that begins "The target width of the sealant …" with the following paragraph:

The target width of the sealant application is the Geotextile width plus 6 inches. Apply the sealant only as far in advance of the Geotextile installation as appropriate to ensure a tacky surface at the time of Geotextile placement. Place the Geotextile the same Day as the sealant. Do not allow traffic on the sealant. Clean excess asphalt from the road surface.

00350.42(a) Placement - Replace the bullet that begins "Unroll the Geogrid …" with the following bullet:

• Unroll the Geogrid in the same direction the cover Material is placed. If the Geogrid shifts or becomes misaligned, realign it and anchor it according to the manufacturer's recommendations.

SECTION 00390 - RIPRAP PROTECTION

Comply with Section 00390 of the Standard Specifications modified as follows:

00390.11(a) General - Replace the bullet that begins "Be angular in shape …" with the following bullet:

• Be angular in shape. Thickness of a single Rock is not less than one-third its length.

Rounded Rock will not be accepted unless authorized by the Engineer.

00390.11(b) Test Requirements - Replace the paragraph that begins "Furnish the Rock…" with the following paragraph:

Furnish Rock meeting the following test requirements:

00390.11(c)(1) Control Sample - Replace this subsection, except for the subsection number and title, with the following:

If directed, provide, at a satisfactory location near the Project, a Rock sample of at least 5 Tons meeting the gradation for the class specified. The Engineer will use the sample as a frequent visual reference for judging the gradation of the riprap supplied.

00390.11(c)(2) Sampling and Testing Assistance - Replace this subsection, except for the subsection number and title, with the following:

The Engineer may request a gradation verification of two random truckloads of Rock. Provide mechanical Equipment, a sorting site and labor needed to assist in checking gradation at no additional cost to the Agency

00390.42 Filter Blanket Construction - Replace this subsection, except for the subsection number and title, with the following:

Place the Filter Blanket on the prepared area to the full specified thickness in one operation, using methods that do not cause segregation.

00390.44(a) General - Replace this subsection, except for the subsection number and title, with the following:

Unless otherwise directed, place the riprap protection as the embankment is constructed. Lag the riprap placement behind the embankment construction only as necessary to allow proper embankment construction and prevent mixture of embankment and riprap Material.

00390.44(b) Loose Riprap - Replace the bullet that begins "With a clamshell …" with the following bullet:

• With a clamshell, orange-peel bucket, skip or similar approved device that will contain the riprap Material to its final destination. Do not open the bucket until it has been lowered to the slope where the Material is being placed.

Replace the bullet that begins "To produce a compact …" with the following bullet:

• To produce a compact riprap protection where all sizes of Material are placed in their proper proportion.

00390.44(c) Keyed Riprap - Replace this subsection, except for the subsection number and

After placing Loose Riprap Material according to 00390.44(a) and 00390.44(b), key the riprap into place by slapping the surface with a piece of armor plating (approximately 4 feet x 5 feet in size weighing approximately 5,000 pounds) or other approved means that will produce a nearly smooth surface.

00390.44(d) Grouted Riprap - Replace the paragraph that begins "Thoroughly moisten the stones …" with the following paragraph:

Thoroughly moisten the stones and sluice any excess fines to the underside of the riprap before grouting. Deliver the grout to the place of final deposit by any means that ensure uniformity and prevent segregation of the grout. Spade or rod the grout into the spaces to completely fill the voids in the riprap. Control pressure grouting and do not unseat the stones. Penetrate the grout to the depth as shown. If a rough surface is specified, brush the stone until 25 to 50 percent of the depth of surface stone is exposed. For a smooth surface, grout the crevices to within 5/8 inch of the surface.

00390.90 Payment - Replace the paragraph that begins "In items (b), (c), and (d) …" with the following paragraph:

In items (b), (c), and (d), the class of riprap is inserted in the blank.

Replace the paragraph that begins "Payment will be payment …" with the following paragraph:

SECTION 00445 - SANITARY, STORM, CULVERT, SIPHON, AND IRRIGATION PIPE

Comply with Section 00445 of the Standard Specifications modified as follows:

00445.02 Contractor's Options - Replace the paragraph that begins "If the Contractor has an option …" with the following paragraph:

If the Contractor has an option of using different kinds of pipe, the option and its installation and other limits are as shown or on the Pipe Data Sheet.

00445.03 Size Determination - Replace this subsection, except for the subsection number and title, with the following:

The nominal size of pipe is determined according to AASHTO tolerances for pipe dimensions for the appropriate kind or class of pipe.

00445.10 General - Replace this subsection, except for the subsection number and title, with the following:

Furnish appropriate certification from the manufacturer or fabricator, based on the manufacturer's quality control tests, that the Materials used in the production of the pipe meet the Specifications.

Materials and strength are as specified for the particular kind of pipe and fittings required.

Use flexible elastomeric gasket Joints on all pipes and fittings. Furnish caps or plugs with each fitting, outlet or stub as required, with the same type of gasket or Joint as the pipe.

For sanitary sewers provide tee or wye fittings in the main of the same Materials as the pipe.

Furnish fittings of sufficient strength to withstand all handling and load stresses encountered.

Furnish Material joining the fittings to the pipe that is free from cracks and that adheres tightly to each joining surface.

Cap or plug all fittings and provide with gaskets of the same Material as used in the pipe Joint. Fit with an approved mechanical stopper or install an integrally cast knockout plug. Provide a cap or plug capable of withstanding test pressures without leaking and, when later removed, permits continuation of piping with jointing similar to Joints in the installed line.

00445.11(a) Pipe Anchors - Replace this subsection, except for the subsection number and

Use pipe anchors according to the Standard Drawings and as shown. Furnish metal bands according to the material Specifications for the Metal pipe that they are attached to.

00445.11(b) Slip Joints - Replace this subsection, except for the subsection number and title, with the following:

Construct slip Joints according to the details shown. Furnish the outer sleeve and tapered section according to the material Specifications for the Metal pipe that they are installed with.

00445.11(c) Safety End Sections - Replace this subsection, except for the subsection number and title, with the following:

Use safety end sections according to 02420.10 and the Standard Drawings. Provide safety bars unless otherwise shown.

00445.11(e) Tracer Wire - Replace this subsection, except for the subsection number and title, with the following:

Use 12-gauge stranded or solid copper insulated high molecular weight polyethylene (HMW-PE) tracer wire or 12-gauge copper clad steel reinforced insulated HMW-PE tracer wire. Use a green, minimum 45 mil thick HMW-PE insulated cover. Use a tracer wire that is UL rated for 140 °F.

00445.11(f) Fittings for Concrete Pipe - Replace this subsection, except for the subsection number and title, with the following:

Where fittings are fabricated by inserting a stub into a hole cut in the pipe, grout with a non-shrinking grout. Coat surfaces to receive grout with an epoxy bonding agent prior to grouting. Do not allow fitting stubs to protrude inside of the sewer pipe.

00445.40(b) Line and Grade - Replace the paragraph that begins "Centerline and grade control …" with the following paragraph:

Centerline and grade control is established prior to the start of construction and the Special Provisions will indicate if the Agency or the Contractor establishes the control.

Replace the paragraph that begins "Do not vary from established …" with the following paragraph:

Do not vary from established line and grade by more than 1/32 inch per inch of pipe diameter or 1/2 inch for pipe diameter of 16 inches or longer, subject to the following limitations:

00445.40(d) Laying Pipe on Curves - Replace this subsection, except for the subsection number and title, with the following:

Lay pipe on horizontal or vertical curves as shown or approved. When deflecting the pipe from a straight line, either in the vertical or horizontal plane, or when long radius curves are shown, do not exceed the amount of deflection allowed by the pipe manufacturer.

00445.40(f) Installation of Sanitary Sewer Service Tees and Wyes - Replace the paragraph that begins "The maximum line or …" with the following paragraph:

Accomplish line or grade changes with fittings and long radius curves or bends. Do not exceed 45 degrees line or grade change with any one fitting.

00445.43(a) General - Replace the paragraph that begins "Lay pipe proceeding upgrade …" with the following paragraph:

Lay pipe proceeding upgrade with spigot ends in the direction of flow. Assemble Joints according to the recommendations of the manufacturer for the type of Joint used. Furnish a trench bottom that has a continuous and uniform bearing and support for the pipe at every point between Joints.

Replace the paragraph that begins "Prevent excavated or other …" with the following paragraph:

Prevent excavated or other foreign material from getting into the pipe. Plug or close off pipes that are stubbed off for future connection. When cutting or machining of the pipe is necessary, use only the tools and methods recommended by the pipe manufacturer. Furnish field Joints that:

00445.43(d) Polyethylene Pipe - Replace the paragraph that begins "Assemble and join …" with the following paragraph:

Assemble and join solid-wall HDPE pipe at the site using the thermal butt fusion method to provide a leak-proof Joint. Threaded or solvent-cement Joints are not allowed. Use Equipment and procedures in strict compliance with the manufacturer's recommendations. Use personnel certified as fusion technicians by the manufacturer of the pipe or fusing Equipment to accomplish the fusing.

00445.43(f) Polypropylene Pipe - Replace the paragraph that begins "When the ambient air …" with the following paragraph:

When the ambient air temperature is less than 10 °F, do not install, move, cover, bury, or otherwise handle the polypropylene pipe. All polypropylene pipe handled at temperatures below 10 °F is rejected and not allowed to be used on the Project.

00445.44 Strutting Metal Pipe - Replace this subsection, except for the subsection number and title, with the following:

When the Plans or Special Provisions call for Metal pipe to be installed in a tied or strutted condition, place the ties or struts before backfilling, according to the details shown. Strutting with timber is not allowed in pipe furnished with paved inverts or with centrifugally applied bituminous inner linings. Remove the ties and struts after the embankment over the pipe is completed and compacted.

00445.47 Contact Surfaces, Aluminum to Concrete - Replace the paragraph that begins "Where uncoated aluminum …" with the following paragraph:

Where uncoated aluminum pipe or aluminum coated steel pipe is touching portland cement concrete, give the contact surfaces of the pipe a coating of asphalt mastic applied at a rate that will give a minimum dry film thickness of 50 mils.

00445.71(a) General - Replace this subsection, except for the subsection number and title, with the following:

Provide storm gravity sewer systems, sanitary gravity systems, siphon systems and irrigation systems and appurtenances that successfully pass a hydrostatic or air test prior to acceptance and are free of visible infiltration of water. Test manholes as specified in Section 00470.

On pipe 30 inches in diameter and larger, individual Joints may be tested by an approved Joint testing device. Submit all testing procedures and details for review by the Engineer.

00445.71(c) Testing Equipment - Replace this subsection, except for the subsection number and title, with the following:

Provide all necessary testing Equipment and perform the tests in a manner that provides observable and accurate measurements of either air or water leakage under the specified conditions. Calibrate and certify gauges at the direction of the Engineer. Provide the certification with the gauge.

00445.72(a) General - Replace the paragraph that begins "The method, Equipment …" with the following paragraph:

Submit the method, Equipment and personnel used in testing for approval by the Engineer. The Engineer may, at any time, require a calibration check of the instrumentation used.

00445.72(a)(1) Safety Precautions - Replace this subsection, except for the subsection number and title, with the following:

Only qualified personnel are allowed to conduct the test. Furnish plugs used to close the system for the testing that are capable of resisting the expected internal pressures. Securely brace plugs, if necessary.

00445.72(b) Exfiltration Leakage Testing - Replace this subsection, except for the subsection number and title, with the following:

Prior to the exfiltration leakage test, the pipe test section may be filled with clear water to permit normal absorption into the pipe walls. Keep the test pipe section saturated for a minimum of 4 hours. After the absorption period, refill the pipe to the required test head.

Exfiltration leakage of more than 0.04 gallons per hour per inch diameter per 100 feet of pipe is unacceptable, except 0.3 gallons per hour, per inch per 100 feet may be used in arid climate zones if approved by the Engineer. The minimum hydrostatic head for testing is a minimum 6-foot water column above the crown of the highest section of pipe including service connections or exceed the maximum estimated groundwater level. The Engineer will make the final decisions regarding test height for the water in the pipe section.

Limit the length of pipe tested by exfiltration so that the pressure on the invert of the lower end of the section does not exceed 16 feet of water column. Account for all service connection footage for computing allowable leakage.

00445.72(c) Air Testing - Replace the paragraph that begins "The pressure guage …" with the

Provide a pressure gauge for use in air testing having minimum divisions of 0.1 psi and an accuracy of 0.0625 psi. All air testing is by the time pressure drop method. The test procedure is as follows:

00445.72(c)(2) Replace this subsection, except for the subsection number, with the following:

Determine the average height of the groundwater over the line. Increase the required test pressures by 0.433 psi for each foot of average water depth over the exterior crown of the pipe.

00445.72(c)(6) Replace the paragraph that begins "For air permeable Materials …" with the following paragraph:

For air permeable Materials (concrete & clay) the tested section is acceptable if the time recorded in paragraph (6) above is not less than the time in seconds (T) computed by the formula:

Replace the paragraph that begins "C = the sum of the …" with the following paragraph:

C = the sum of the computations (0.0003882 dL) for each size of pipe and its length in the section, except that the minimum value for C is 1

Replace the paragraph that begins "For non-air permeable pipe …" with the following paragraph:

For non-air permeable pipe (Metal, PVC, HDPE, ABS composite), the section tested is acceptable if the time recorded in (6) above is not less than the time determined by the following equation.

00445.72(d)(1) General - Replace this subsection, except for the subsection number and title, with the following:

The Contractor may test each individual Joint for leakage using a pneumatic Joint testing apparatus. The method, Equipment and personnel used in individual Joint testing is as approved.

The Engineer may, at any time, require a calibration check of the instrumentation used. Use a pressure gauge having minimum divisions of 0.1 psi and have an accuracy of 0.0625 psi. Pass all air used through a single control panel.

00445.72(d)(2) Method - Replace this subsection, except for the subsection number and title, with the following:

All air testing is by the time pressure drop method. The test procedure is as follows:

a. Determine the average height of the groundwater over the line. Increase the test pressures required below by 0.433 psi for each foot of average water depth over the exterior crown of the pipe.

b. Add air slowly to the section being tested until the internal air pressure is raised to 4 psi greater than the average backpressure due to groundwater.

00445.72(d)(3) Acceptance - Replace this subsection, except for the subsection number and

The Joint is considered acceptable if the pressure drops less than 1 psi within 5 seconds.

00445.75 Repairs - Replace the paragraph that begins "Following a successful …" with the following paragraph:

Following a successful hydrostatic or air test, visible infiltration of groundwater in any section is considered evidence that the original test was in error or that failure of the section has occurred.

Correct such failures and retest the repaired sections, at no additional cost to the Agency.

00445.91 Payment - Replace the paragraph that begins "In item (a), the …" with the following paragraph:

In item (a), the nominal pipe diameter is inserted in the first blank. The type of pipe is inserted in the second blank. The appropriate flow line depth range is inserted in the third blank.

Replace the paragraph that begins "In item (b), the nominal pipe …" with the following paragraph:

In item (b), the nominal pipe diameter is inserted in the first blank. For arch type pipe, the nominal diameter of circular Metal pipe from which the pipe arch is formed, or reformed, is inserted in the first blank. The type of pipe is inserted in the second blank.

Replace the paragraph that begins "In items (c) and (d) …" with the following paragraph:

In items (c) and (d), the nominal pipe size is inserted in the blank.

Replace the paragraph that begins "In item (e), the …" with the following paragraph:

In item (e), the outer sleeve slip Joint size is inserted in the blank. The inner sleeve will be included in payment made for the smaller pipe.

Replace the paragraph that begins "In item (f) and (g)…" with the following paragraph:

In items (f) and (g), the nominal pipe diameter is inserted in the blank.

Replace the paragraph that begins "In item (h), the …" with the following paragraph:

In item (h), the type of pipe slope anchor is inserted in the first blank and the nominal pipe diameter is inserted in the second blank.

Replace the paragraph that begins "In item (l), the …" with the following paragraph:

In item (l), the nominal pipe diameter is inserted in the blank.

Replace the paragraph that begins "In item (m), the …" with the following paragraph:

In item (m) the nominal pipe diameter is inserted in the blank.

Replace the paragraph that begins "Payment will be payment …" with the following paragraph:

SECTION 00640 - AGGREGATE BASE, AND SHOULDERS

Comply with Section 00640 of the Standard Specifications modified as follows:

00640.16 Acceptance of Aggregates - Replace this subsection, except for the subsection number and title, with the following:

Acceptance is visual by the Engineer.

00640.40 Preparation of Foundation - Replace this subsection, except for the subsection number and title, with the following:

Provide a firm surface that Aggregates are to be placed according to Sections 00320, 00330, or 00610 as applicable.

00640.42(a) Base - Replace the paragraph that begins "If the required compacted …" with the following paragraph:

If the required compacted depth of the Base Course exceeds 6 inches, construct it in two or more layers of nearly equal thickness. The maximum compacted thickness of any one layer is 6 inches.

00640.42(b) Shoulders - Replace this subsection, except for the subsection number and title, with the following:

Place Shoulder Aggregates in a single layer, or two or more layers of nearly equal thickness. The maximum compacted thickness of any one layer is 9 inches.

00640.43 Shaping and Compacting - Replace the paragraph that begins "Compact each layer …" with the following paragraph:

Compact each layer of Material placed in Shoulder and Base areas by rollers meeting the requirements of 00641.24 or as directed.

00640.44 Surface Tolerance - Replace this subsection, except for the subsection number and title, with the following:

Parallel the finished surface and the surface of each underlying layer of the Aggregate to the established grade and Cross Section for the finished surface within 0.04 foot.

Do not vary the finished surface of the compacted Aggregate Base, when tested with a 12-foot straightedge, from the testing edge by more than 1/2 inch at any point. Furnish and operate the straightedge as directed.

00640.90 Payment - Replace the paragraph that begins "Payment will be payment …" with the following paragraph: