5_Horsfall-ProjectSpecifications-AG04T0S160032.pdf

USDA Forest Service Project Specifications

March, 2016 Horsfall Beach Septic System Replacement Section 00100 ‐ 1

SECTION 00100

MEASUREMENT AND PAYMENT

1. PART 1 ‐ GENERAL

1.01 MEASUREMENT AND PAYMENT

A. Measurement and payment for contract work will be made only for and under those pay items included in SECTION B ‐ SCHEDULE OF ITEMS. All other work and materials shall be considered incidental, and shall be included in the payment for items shown.

B. When more than one class, size, or thickness is specified in the SCHEDULE OF ITEMS for any pay item, suffixes will be added to the item number to differentiate between items to be bid.

C. Refer to individual specification sections for actual pay items, units of measurement, and additional details on measurement and payment of the work.

1.02 DETERMINATION OF QUANTITIES

A. For individual construction items, longitudinal and lateral measurements for area computations will be made horizontally or corrected to horizontal measurement unless otherwise specified.

B. Structures will be measured according to lines SHOWN ON THE DRAWINGS or as altered by the CO in writing to fit field conditions.

C. For items that are measured by the linear foot, such as electrical lines and sewer lines, measurements will be made parallel to the base or foundation upon which the structures are placed.

1.03 UNITS OF MEASUREMENT

A. Payment will be by units defined and determined according to U.S. Standard measure as follows:

1. Acre – Make longitudinal and transverse measurements for area computations horizontally.

2. Cubic Yard ‐ A measurement computed by one of the following methods:

a. Excavation, Embankment, or Borrow ‐ The measurement computed by the average end area method from measurements made longitudinally along a centerline or reference line.

b. Material in Place or Stockpile ‐ The measurement computed with dimensions of the in‐place material.

c. Material in the Delivery Vehicle ‐ The measurement computed using measurements of material in the hauling vehicles at the point of delivery.

Vehicles shall be loaded to at least their water level capacity. Leveling of the loads may be required when vehicles arrive at the delivery point.

March, 2016 Horsfall Beach Septic System Replacement Section 00100 ‐ 2

3. Cubic Yard Mile ‐ A combination of linear and volumetric measurement meaning the movement of a cubic yard of material 1 mile.

4. Each ‐ One complete unit, which may consist of one or more parts. The quantity is the actual number of units completed and accepted.

5. Gallon – The quantity may be measured by any of the following methods:

a. Measured volume container.

b. Metered volume. Use an approved metering system

c. Commercially packaged volumes.

6. Hour – Measurement will be for the actual number of hours ordered and performed by the Contractor.

7. Linear Foot – Measure from end to end, parallel to the base or foundation being measured, or horizontal.

8. Lump Sum – Do not measure directly. The bid amount is complete payment for all work described in the contract and necessary to complete the work for that item.

9. MFBM ‐ One thousand board feet measure based on nominal widths, thicknesses, and extreme usable length of each piece of lumber or timber actually incorporated in the job.

10. Mile – Measure horizontal along the centerline of each roadway, approach road, or ramp.

11. Pound – If sacked or packaged material is furnished, the net weight as packed by the manufacturer may be used.

12. Square Foot ‐ Measure on a plane parallel to the surface being measured or horizontal.

13. Square Yard – Measure on a plane parallel to the surface being measured or horizontal.

14. Station ‐ One hundred linear feet measured horizontally.

15. Station Yard ‐ A combination of linear and volumetric measurement meaning the movement of a cubic yard of material one station.

16. Thousand Gallons Mile ‐ A combination of linear and volumetric measurement meaning the movement of 1,000 gallons of material 1 mile.

17. Ton ‐ Short ton consisting of 2,000 pounds.

18. Ton Mile ‐ A combination of linear and weight measurement meaning the movement of

1 ton of material 1 mile.

1.04 METHODS OF MEASUREMENT

A. One of the following methods of measurement for determining final payment is DESIGNATED on the SCHEDULE OF ITEMS for each pay item:

March, 2016 Horsfall Beach Septic System Replacement Section 00100 ‐ 3

1. Designed Quantities (DQ) ‐ These quantities denote the final number of units to be paid for under the terms of the contract. They are based upon the original design data available prior to advertising the project. Original design data include the preliminary survey information, design assumptions, calculations, drawings, and the presentation in the contract. Changes in the number of units SHOWN in the SCHEDULE OF ITEMS may be authorized under any of the following conditions:

a. As a result of changes in the work authorized by the CO.

b. As a result of the CO determining that errors exist in the original design data used to determine designed quantities that cause a pay item to change by 15 percent or more.

c. As a result of the Contractor submitting to the CO a written request showing evidence of errors in the original design data used to determine design quantities that cause a pay item total to change by 15 percent or more. The evidence must be verifiable and consist of calculations, drawings, or other data that show how the designed quantity is believed to be in error.

2. Staked Quantities (SQ) ‐ These quantities are determined from staked measurements prior to construction.

3. Actual Quantities (AQ) ‐ These quantities are determined from measurements of completed work.

4. Vehicle Quantities (VQ) ‐ These quantities are measured or weighed in hauling vehicles.

5. Lump Sum Quantities (LSQ) ‐ These quantities denote one complete unit of work as required by or described in the contract, including necessary materials, equipment, and labor to complete the job. They will not be measured.

2. PART 2 – PRODUCTS (NOT APPLICABLE)

3. PART 3 – EXECUTION (NOT APPLICABLE)

END OF SECTION

March, 2016 Horsfall Beach Septic System Replacement Section 01200 ‐ 1

SECTION 01200

MOBILIZATION PAYMENT PROCEDURES

1. PART 1 ‐ GENERAL

1.01 MEASUREMENT AND PAYMENT

A. This work shall consist of preparatory work and operations necessary for the movement of personnel, equipment, supplies, and incidentals to the project sites, and for all other work and operations that must be performed or that cause costs to be incurred prior to beginning work on the various items on the project sites.

2. PART 2 – PRODUCTS (NOT APPLICABLE)

3. PART 3 ‐ EXECUTION

3.01 EQUIPMENT PREPARATION

A. To reduce the risk of noxious weeds being introduced into the project area, the following practices shall be followed:

1. All heavy equipment (excluding passenger vehicles) shall be clean and free of soil, vegetative matter, or other debris that may contain or hold weed seeds prior to entering National Forest System lands.

2. Off‐road equipment shall be made available for inspection by the CO prior to work to ensure it is free of all soil, seeds, vegetative matter, and other debris that could hold or contain seeds.

3. Material sources (e.g. rock, sand, or borrow sites) shall be inspected to ensure that they are weed‐free before use and transportation. If material from a stockpile that is weed‐ infested is used, the top layers shall be scraped off to remove seeds and plants, and treat before any use of this pit material.

4. Erosion control materials (seed, straw, hay) shall be certified free of weed seed and plant parts.

4. PART 4 – MEASUREMENT AND PAYMENT

4.01 PROGRESS PAYMENTS WILL BE MADE AS FOLLOWS:

A. When 5 percent or more of the original contract amount is earned from other pay items, 50 percent of the amount for mobilization for that particular site, or 5 percent of the original contract amount, whichever is less, will be paid.

B. When 10 percent or more of the original contract amount is earned from other pay items, 100 percent of the amount for mobilization for that particular site, or 10 percent of the original contract amount, whichever is less, will be paid.

March, 2016 Horsfall Beach Septic System Replacement Section 01200 ‐ 2

C. Upon completion of all work at a particular site, any unpaid amount for mobilization for that site will be paid. The total of all payments shall not exceed the original contract amount for this item.

4.02 BASIS OF PAYMENT

A. The accepted work will be paid for at the Contract unit price for each item shown on the

Schedule of Items.

B. This item includes any and all fees paid to the Oregon Department of Environmental Quality

(ODEQ).

C. Payment will be made under:

PAY ITEM DESCRIPTION PAY UNIT

01200 Mobilization Lump Sum

March, 2016 Horsfall Beach Septic System Replacement Section 01300 ‐ 1

SECTION 01300

SUBMITTALS

1. PART 1 ‐ GENERAL

1.01 SUMMARY

A. The following submittal requirements and procedures are required in addition to and as an explanation of FAR Clause 52.236‐21 and AGAR Clause 452.236‐76.

B. Section Includes:

1. These requirements are for all submittals including but not limited to, product data, samples, shop drawings, catalogs and manufacturer’s literature, schedules, substitution requests, layouts, as‐built drawings, maintenance and operating data, guarantees, etc.

2. Submittals shall be made for all fabricated items furnished and installed as specified.

3. Work shall not commence on any item requiring submittals until submittals are approved in writing by the Contracting Officer (CO).

1.02 SUBMITTAL REQUIREMENTS

A. All submittals shall be accompanied by a submittal transmittal form.

B. Equipment numbers shall be listed for items being submitted.

C. Submittals for various items shall be made with a single form when the items taken together constitute a manufacturer’s package or are so functionally related that expediency indicates checking or review of the group or package as a whole.

D. Submit three sets of catalog cuts, shop drawings and manufacturer's installation, operating and maintenance instructions for all material and equipment requiring submittals to the CO.

E. Obtain written approval for the above submittals prior to construction, assembly, and delivery.

F. Submittals shall have sufficient detail to determine if ratings, characteristics, and physical construction are equivalent to those specified.

G. Where manufacturer's catalog sheets are used, indicate the specific items to be supplied in ink either by arrow, encircled on the sheet, or the inapplicable portion blocked out. List manufacturer's name, contract, section and drawing sheet reference number on each catalog sheet. Identify where equipment is to be used, if not obvious.

H. Submittals shall show any changes to be made resulting from substitution of equipment or materials for those that are specified.

1.03 TYPE AND NUMBER REQUIRED

A. Manufacturer’s Literature: Submit three (3) copies of required manufacturer’s literature.

Modify product data by deleting information which is not applicable to the project, or by

March, 2016 Horsfall Beach Septic System Replacement Section 01300 ‐ 2 marking each copy to identify pertinent products. Supplement standard information, if necessary, to provide additional information applicable to project.

B. Correcting: The Contractor shall make any corrections required by the CO and shall resubmit corrected submittals until accepted. The Contractor shall provide for enough time for reviews, revisions and re‐submittals to not delay the work.

1.04 MATERIAL PRODUCT SUBMITTALS

A. Material submittals shall be sufficient to demonstrate compliance with the Specifications and

Drawings. Refer to separate Sections of these Specifications, and /or Part C‐5 of the Contract

Package, for the materials requiring submittals for this work.

1.05 OTHER SUBMITTALS

A. Safety Plan

1. All work shall be done in accordance with Occupational Safety and Health Act (OSHA) regulations.

2. The safety plan shall designate a qualified and competent Safety Manager(s) who will be on the job site at all times.

3. Needs to address all reasonably anticipated safety concerns, including but not limited to: temporary excavation/deep trenching/slope stability; fall hazard from work heights exceeding six feet (as applicable); heavy equipment operation; fire hazards; hazardous materials / waste handling; electrical hazard; hydraulic and/or pneumatic and/or other high pressure hazards; mechanical hazards such as pulleys, springs, etc.

4. Shall also address training, accident protocol and reporting, contingencies for severe weather, and site‐specific considerations such as working in the vicinity of Forest

Service employees and public visitors at the site.

5. Shall be approved by the CO prior to beginning on‐site work

B. Soil Erosion Control Plan (if pumping underground water).

C. Fire Protection Plan – Refer to Part J of the Contract Package for additional details.

D. Work Progress Schedule

6. Needed to ensure adequate planning and execution of the work so that the work is completed within the respective number of calendar days allowed in the contract; and to assist the CO in appraising the reasonableness of the proposed schedule and evaluating the progress of the work.

7. Within ten (10) calendar days after being awarded the Contract, prepare and submit for the CO’s information, a Work Progress Schedule using estimated times and events, if necessary.

8. The progress schedule shall be related to the entire project to the extent required by the Contract Documents, and shall provide for expeditious and practicable execution of the work.

March, 2016 Horsfall Beach Septic System Replacement Section 01300 ‐ 3

9. Update the schedule as needed and resubmit it to the CO for reference with each progress payment request.

E. Project Close‐out Submittals:

1. Warranty Information.

2. Project record drawings (as‐builts) – Clearly mark all changes from the original Contract

Drawings in red ink. Also show the final location of all buried utilities and indicate their dimensions from permanent structures, such as the corners of buildings.

3. Operation and Maintenance (O&M) Manuals – Keep O&M information current throughout the Contract. Use the O&M manuals as training tools during the operator training. Before scheduling a final inspection, furnish a copy of the O&M manual (hard copy or electronic) to the CO for review. The O&M shall be approved by the CO prior to the operator training and the final inspection. Once it is approved, furnish two hard copies of the final O&M manual, in binders, to the CO.

4. Test Results – Submit copies of all test results, including but not limited to, concrete testing, leak testing the new septic tanks, pressure testing the new sewer pipes and distribution lines to the sand filter, and squirt height test of laterals within the sand filter.

5. Electrical Permit and Inspection Documentation – refer to Section 16000 for additional details.

1.06 CONTRACTOR’S VERIFICATION

A. General

1. All submittals are instruments of the Contractor. The Contractor shall carefully check all items of their subcontractors and suppliers as well as the Contractor’s own before transmitting them to the CO.

B. Determine and verify:

1. Field measurements.

2. Field construction criteria.

3. Catalog numbers and similar data.

4. Conformance with specifications.

5. Stamp and initial all submittals indicating that they have been reviewed prior to sending to CO.

C. QUESTIONS: Contractor shall review all submittals and include answers to any questions or clarifications required by subcontractors and, in particular, shall ascertain that the submittals meet all requirements of the Contract Documents.

1.07 SUBMITTAL IDENTIFICATION AND PACKAGING

A. All submittals shall be identified and have the following information:

March, 2016 Horsfall Beach Septic System Replacement Section 01300 ‐ 4

1. Project name and location and contract number.

2. Subcontractors, vendors, and/or manufacturer’s name, address, and telephone number.

3. A unique number, sequentially assigned, shall be noted on the transmittal form accompanying each item submitted.

4. Product identification or shop drawing title, number, revision and data as applicable.

Where product data contains more than one product, model, selection, etc., clearly mark and identify the information intended to be reviewed by CO.

5. Reference to Contract Drawing and/or Specifications Sections as applicable.

6. Field dimensions, clearly identified as such.

7. Identification of deviations from Contract Documents.

8. Identification of revisions on re‐submittals.

9. Contractor’s stamp, initialed or signed, certifying to review of submittal, verification of products, field measurements and field construction criteria, and with requirements of the Work and of the Contract Documents.

B. Packaging of Submittals

1. All submittals shall be adequately wrapped or packaged to prevent damage during delivery.

2. Electronic copies of the initial submittals are generally preferred, provided they are legible, to accelerate the review/approval process. Contractor shall provide clean hard copies of the final, approved set of submittals.

C. GENERAL: Prior to submittal for CO’s review, use all means necessary to fully coordinate all material, including the following procedures:

1. Determine and verify all field dimensions and conditions, materials, catalog numbers and similar date.

2. Coordinate as required with all trades and with all public agencies involved.

3. Secure all necessary approvals from public agencies and others and signify by stamp, or other means, that they have been secured.

4. Clearly indicate all deviations from the Contract Documents.

5. On re‐submittals, clearly indicate all revision or changes from original submittal.

D. GROUPING OF SUBMITTALS: Unless otherwise specifically permitted by the CO make all submittals in groups containing all associated items; the CO may reject partial submittals as not complying with the provisions of the Contract Documents.

March, 2016 Horsfall Beach Septic System Replacement Section 01300 ‐ 5

1.08 TIME SCHEDULES

A. General

1. Make all submittals far enough in advance of schedule dates of installation to provide all required time for reviews, for securing necessary approvals, for possible revisions and re‐submittal, and for placing orders and securing delivery.

2. In scheduling, allow at least (7) calendar days for the CO’s review following receipt of each submittal. On re‐submittals, allow at least (7) additional calendar days. For submittals that require the approval of ODEQ, the Contractor shall work directly with

ODEQ to schedule the review, and the Forest Service will not be responsible for their timeliness.

3. Though the CO may utilize other agents (inside or outside the USFS) to assist in submittal review, only the CO has the authority to issue action in regards to submittals.

B. Delays: The Contractor shall provide for enough time for reviews, revisions and re‐submittals to not delay the work. Costs of delays occasioned by tardiness of submittals shall be borne by the Contractor.

C. Shop Drawings and Product Data

1. The Contractor shall make any corrections required by the Government and shall resubmit corrected Shop Drawings, and manufacturer’s literature until accepted.

2. When submittals have received final acceptance, the Contractor shall make distribution to all parties concerned.

2. PART 2 – PRODUCTS (NOT APPLICABLE)

3. PART 3 – EXECUTION (NOT APPLICABLE)

4. PART 4 – MEASUREMENT AND PAYMENT (NOT APPLICABLE)

March, 2016 Horsfall Beach Septic System Replacement Section 02317 ‐ 1

SECTION 02317

EXCAVATION AND BACKFILL

1. PART 1 ‐ GENERAL

1.01 SUMMARY

A. This section specifies excavation and backfill for the structures and utilities of this Project.

This includes furnishing, hauling and placing of backfilling materials; disposal of excess or unsuitable backfilling materials; and grading.

B. All construction operations shall be in compliance with the requirements and restrictions of

Occupational Safety and Health Administration (OSHA) Code.

C. Material to be excavated is unclassified.

D. Coordinate alignment of the sand filter and the new tanks on site with the Contracting Officer

(CO) to determine proper excavation locations.

1.02 OWNER’S INSTRUCTIONS

A. Conform to the dimensions indicated on the Drawings or staked on the ground.

B. Extend excavation a sufficient distance from walls and footings to allow placing and removal of forms.

C. Undercutting will not be permitted.

D. Prevent surface water from entering the excavation; be prepared to provide pumping equipment as needed.

E. Follow the product manufacturer’s installation instructions and recommendations.

2. PART 2 ‐ PRODUCTS

2.01 MATERIALS

A. Pipe Bedding Material

1. Fine soil or sand, 100 percent passing the #4 sieve; or crushed rock less than ½”, meeting the requirements of AASHTO M147.

B. Backfill Material

1. Backfill materials shall contain no organic or frozen material.

a. Designated backfill material shall be excavated material containing no organic debris or rock larger than 3 inches.

2. Crushed Rock/Aggregate as Bedding Material

a. Aggregate, conforming to the requirements of AASHTO T27 and T11.

3. Topsoil

March, 2016 Horsfall Beach Septic System Replacement Section 02317 ‐ 2

a. Loam or excavated topsoil with no rocks larger than 2 inches in greatest dimension. Finish graded surface shall be free of roots, brush, weeds, and stones larger than 2 inches.

3. PART 3 ‐ EXECUTION

3.01 CONSTRUCTION

A. Refer to Section 02543 – Septic Tanks and Components for additional details on the excavation and backfill requirements related to the septic tanks, dosing tank, and components.

B. Preparation

1. Clearing limits are within 3 feet on either side of utility center lines, and within 5 feet of the edges of new structures unless otherwise approved, in writing, by the CO.

2. As needed, clear brush and vegetation not designated to remain within the clearing limits.

3. Grub all brush and roots within the area cleared.

4. Expect to encounter both buried and exposed components of the old septic system.

These components shall be removed.

5. Dispose of all debris generated by clearing and excavation operations legally off Forest

Service land.

C. Excavation

1. General

a. Operations shall be in compliance with the requirements and restrictions of

OSHA, and the Oregon Occupational Safety and Health Code.

b. All excavation for utilities and structures shall be in reasonably close conformity with the Plans, and/or as designated by the CO on the ground. Any shifting or change from the Plans must receive prior written approval of the CO.

c. Conduct excavation for the sand filter so that the bottom edge of the east wall matches the finish grade elevation of the adjacent ground. The west wall shall butt up against the sand dune, and be backfilled to within 12 inches of the top edge.

d. Lay utilities in continuous open trench.

e. Trim roots flush with trench wall.

f. Where unsuitable material is encountered in the trench bottom, as determined by the CO, excavate the trench below grade to the depth specified by the CO.

g. Pile excavated material at the side of the excavation where it will give the best protection for the work.

March, 2016 Horsfall Beach Septic System Replacement Section 02317 ‐ 3

h. Leave adequate space between the toe of the spoil pile and the edge of excavation to prevent material from falling into the trench.

2. Wet Excavation

a. If groundwater is encountered during excavation, provide adequate pumping equipment and materials to keep the excavation free from water, disposing of the water without damage to adjacent property. Separate payment will not be made for pumping of water from excavation.

b. Implement soil erosion control measures as approved by the Soil erosion Control

Plan.

3. Over Excavation

a. In the event of over‐excavation under footings, increase the depth of the footing by the amount of over‐excavation. Pour entire footing, including over‐excavated volume, in one continuous pour to rest on undisturbed soil.

b. In the event of general over‐excavation, restore to grade any over‐excavation by backfilling with select material.

4. Back sloping, Sheeting, and Shoring

a. Contractor shall assess site conditions prior to excavation for the septic tanks.

Back sloping, sheeting, and shoring may be needed, and shall be considered incidental to the work.

b. Excavation shall be confined to the clearing limits: 3 feet on either side of utility center lines, and within 5 feet of the edges of new structures, unless otherwise approved, in writing, by the CO.

c. Remove all shoring and sheeting, if used, when construction is completed.

Withdraw to prevent trench wall caving while backfilling.

D. Backfill

1. Preparation for Backfill

a. Remove all forms from the structure, and clean the excavated area of all debris.

Remove any standing water from the excavation.

b. Do not place backfill until the excavation, and installation of improvements, have been inspected and approved by the CO.

2. Backfilling of Concrete

a. Do not backfill until concrete has been in place for 14 days or a minimum strength of 1,500 psi has been reached, unless allowed in writing by CO.

3. Backfilling over Pipes under Slabs (if applicable)

March, 2016 Horsfall Beach Septic System Replacement Section 02317 ‐ 4

a. Use designated backfill material or crushed rock. Place in layers not greater than

6 inches thick to 6 inches below slab. Compact at or near optimum moisture by hand tamping or mechanical vibrating tamper with 2 passes of the entire lift surface. Finish backfill lift as specified for Over‐excavation Backfill under Slabs.

4. Over‐excavation Backfill under Slabs (if applicable)

a. Restore grade for slabs as follows:

i. Within 2 inches of slab bottom: Use bedding material.

ii. From 2 inches to 6 inches below slab: Use crushed rock.

iii. Over 6 inches below slab: Use general backfill material.

iv. Place material in 6 inch maximum lifts and compact with a minimum of 2 passes over the entire layer with mechanical vibrating tamper.

5. General Placement of Backfill Material

a. Place general backfill material in 12 inch maximum lifts. Compact each lift with a minimum of 2 passes over the entire layer with mechanical tampers. For specific backfill applications, such as those mentioned above, the more stringent requirements shall apply.

b. Do not use tracked or wheeled equipment to compact backfill.

c. Take measures as necessary to ensure that the moisture content of the backfill material will permit proper compaction. This may include, but is not limited to, aerating and drying material that is too wet, or spraying the material with water if it is too dry. In either case, the material shall be thoroughly mixed before compaction to assure uniform distribution of water content.

d. Place and compact backfill in uniform lifts around the structure to prevent point loading.

e. When laying pipe, compact around the pipe barrel and bells by hand tamping.

Do not compact material above the pipe until there are 6 inches of cover over the pipe.

6. Topsoil

a. Deposit original surface material as the final backfill lift and compact with a minimum of 2 passes over the entire surface with a mechanical tamper.

E. Grading

1. Grade the general project area to blend smoothly with the existing contours and adjacent ground elevations of the site.

2. Slope surface to provide drainage away from structures.

March, 2016 Horsfall Beach Septic System Replacement Section 02317 ‐ 5

3. Remove all roots, brush, weeds, and stones larger than 2 inches from the finish graded surface.

4. Remove excess material, not needed for backfill or grading, from the project site.

3.02 REPAIR/RESTORATION

A. Underground Utilities

1. Contractor shall be responsible for locating and protecting all existing underground utilities to remain.

2. Stop all work associated with damage to existing utilities, and notify the CO. Repair utility as directed by the CO, at the expense of the Contractor.

3.03 EXCESS EXCAVATED MATERIAL

A. Remove all spoils, construction debris, and unsuitable material from the work area, and legally dispose of off Forest Service land.

B. Spread sand and other excess suitable material evenly across the project site, grading to direct surface water flow away from the restroom building.

4. PART 4 ‐ MEASUREMENT AND PAYMENT (NOT USED)

March, 2016 Horsfall Beach Septic System Replacement Section 02530 ‐ 1

SECTION 02530

SANITARY SEWAGE

1. PART 1 ‐ GENERAL

1.01 SUMMARY

A. This section specifies supply and installation of sanitary sewer lines and the construction of the bottomless sand filter.

1.02 QUALITY ASSURANCE

A. Installation of sanitary sewer system shall be done by a licensed, Oregon Department of

Environmental Quality (ODEQ), State Certified Installer.

B. Work and materials shall meet the Oregon Administrative Rules (OAR) for Onsite Wastewater

Treatment Systems, OARs 340‐052, 340‐071, and 340‐073. Available at http://www.deq.state.or.us/wq/onsite/rules.htm

C. In the event of any discrepancy between the manufacturer’s recommendations, Specifications and Project Plan Sheets, OARs, or other regulations pertaining to the work and materials, the more stringent requirement shall apply.

D. All pipe and appurtenances of a given type, material, and size shall be the product of a single manufacturer.

2. PART 2 ‐ PRODUCTS

2.01 DEFINITIONS

A. All references to pipe sizes refer to the nominal diameter, unless specified otherwise.

2.02 MATERIALS

A. Marking Tape

1. Plastic marking tape, printed with the words "Buried Sewer" or similar. Terra‐Tape, or approved equal.

B. Pressurized Distribution Systems

1. Pressurized Distribution Systems shall satisfy the requirements in OAR 340‐071‐0275 and OAR 340‐073‐0060.

2. Pipe outside of the sand filter (1 ½” diameter as shown on the Plans) shall be Schedule

80 polyvinyl chloride (PVC) per ASTM specification to resist ground movement and UV deterioration.

C. Gravity Sewer Pipe and Fittings

1. Gravity sewer pipe and fittings shall satisfy the requirements in OAR 340‐073‐0060.

2. Pipe outside of the sand filter (6” diameter as shown on the Plans) shall be Schedule 80 polyvinyl chloride (PVC) per ASTM specification to resist ground movement.

March, 2016 Horsfall Beach Septic System Replacement Section 02530 ‐ 2

D. Sewer System Clean‐outs

1. Cleanouts and covers shall satisfy the requirements in OAR 340‐052, Appendix A.

E. Joints between Dissimilar Materials

1. Use flanges or couplings manufactured specifically for the types of pipe being joined and having a minimum pressure rating, or pressure class (as applicable) equal to or greater than the lower pressure rating or class of the pipes being joined.

2. For metallic to plastic pipe connections, use Schedule 40 PVC male adaptor and threaded metallic coupling fittings. Do not thread plastic pipe.

F. Flexible Couplings

1. Fernco, or approved equivalent product.

2. High molecular weight elastomeric plastic compression sealing ring or sleeve coupling with stainless steel clamps and bolts.

G. Thread Compound and Tape

1. A lead free, non‐hardening / non‐corrosive, anti‐seize sealing compound or tape approved for use in joints and threaded parts of potable water systems.

H. Bottomless Sand Filter and Components

1. Refer to Project Plans for additional details on materials and construction of the sand filter.

2. Sand filter construction shall meet the requirements of OAR 340‐071‐0295. Note that this will be a bottomless sand filter, so underdrain piping does not apply.

3. Cast a 3” diameter PVC pipe segment into the concrete wall of the sand filter to serve as a pipe sleeve for the 1 ½” effluent line entering the sand filter. Fill the void space between the 3” and 1 ½” pipes using Dow Great Stuff™ pond and stone expanding foam sealant, or approved equivalent product.

4. Sand filter media is available from Knife River Materials in Coos Bay; contact Jake

Sweet: (541) 269‐1915. Alternate suppliers are acceptable, provided the sieve test results demonstrate that the materials meet the following specifications.

5. Provide sieve test results to the CO and ODEQ showing that the proposed sand filter media meets the requirements of OAR 340‐071‐0100 (124):

a. “Sand filter media” means a medium sand or other approved material used in a conventional sand filter.

b. The media must be durable and inert so that it will maintain its integrity, will not collapse or disintegrate with time, and will not be detrimental to the performance of the system.

March, 2016 Horsfall Beach Septic System Replacement Section 02530 ‐ 3

c. The particle size distribution of the media must be determined through a sieve analysis conducted in accordance with ASTM C‐117 and ASTM C‐136.

d. The media must comply with the following particle size distribution: 100 percent passing the 3/8” sieve; 95 percent to 100 percent passing the No. 4 sieve; 80 percent to 100 percent passing the No. 8 sieve; 45 percent to 85 percent passing the No. 16 sieve; 15 percent to 60 percent passing the No.30 sieve; 3 percent to

15 percent passing the No. 50 sieve; and 4 percent or less passing the No. 100 sieve.

6. Provide sieve test results to the CO and ODEQ showing that the proposed underdrain media meets the requirements of OAR 340‐071‐0100 (170):

a. “Underdrain media” means the material placed under the sand filter media in a sand filter and consists of clean, washed pea gravel.

b. The media must comply with the following particle size distribution: 100 percent passing the 1/2” sieve; 18 percent to 100 percent passing the 1/4” sieve; 5 percent to 75 percent passing the No. 4 sieve; 24 percent or less passing the No.

10 sieve; 2 percent or less passing the No. 16 sieve; and 1 percent or less passing the No. 100 sieve.

7. The top layer of the sand filter, labeled “loamy sand” on Sheet 4 of the Plan Sheets, shall be free of rock, vegetation, wood waste, and other materials that may harm the filter. The soil cover must have a textural class no finer than loam unless otherwise authorized by the DEQ agent.

8. Filter Fabric

a. Provide filter fabric conforming to OAR 340‐073‐0041, to be installed between the loamy sand and underdrain media, as shown on Sheet 4 of the Plans.

b. Constructed of synthetic fabric, either spun bonded or woven.

c. Non‐biodegradable, resistant to soil acids and alkalis within a pH range of 4 to

10, and resistant to common solvents.

d. Burst strength not less than 25 psi; air permeability not less than 500 cfm per square foot; water flow rate not less than 500 gpm per square foot at 3 inches of head; equivalent opening size of 70 to 100 sieve; and hydrophilic surface reaction to water.

9. Lateral distribution lines shall be 1 ½” diameter pre‐drilled Class 200 pipe with 1/8” orifices on 24” centers, OSI part # LP 15024‐10, or approved equivalent product. To avoid errors and inconsistency, and to uphold warranty terms, Contractor shall provide pre‐manufactured drainfield laterals. Contractor is not permitted to drill their own orifices.

10. Each orifice shall be covered with an orifice shield designed for the application, OSI part

# OS 125, constructed of PVC per ASTM D‐1784, or approved equivalent product.

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11. Flexible membrane liner shall be 30 mil (thickness) unreinforced PVC, as described in

OAR 340‐073‐0085, to go along the inside walls of the sand filter.

12. Provide a flushing assembly at the end of each lateral, including a PVC sweep ell with a ball valve and a polyethylene valve box enclosure, OSI part # SE K 075 V, or approved equivalent product.

3. PART 3 ‐ EXECUTION

3.01 INSTALLATION

A. Sewer‐line Trench

1. Install sewer lines in the approximate alignment shown in the Plans and/or staked in the field by the CO.

B. Placement of Pipe

1. Special care shall be taken to properly bed the piping and underground appurtenances due to the potential for underground movement in this region.

2. Lower pipe lengths carefully into the trench. Do not drop pipe during unloading or placement. Dropped pipe sections will be subject to rejection by the CO.

3. Support pipe to insure true alignment and an invert which is smooth and free from roughness or irregularity. When the pipe is in place, fine grade the pipe bedding with hand tools. Support pipe by placing and tamping sufficient pipe bedding along the sides of the pipe to prevent movement.

C. Protection and Cleaning of Pipe Interior

1. Close the pipe end with a watertight stopper at the end of each workday.

2. Clean sewer lines of all rocks, dirt, and other debris at the completion of construction.

D. Approval

1. Do not begin backfill until pipeline installation is accepted, in writing, by the CO.

E. Cleanouts

1. Install clean‐outs according to the Plans and Specifications, manufacturer’s instructions, and requirements in OAR 340‐052, Appendix A.

F. Bottomless Sand Filter

1. Construct the sand filter in accordance with the Project Plan Sheets, manufacturer’s recommendations, and OAR 340‐071‐0295.

2. Refer to Section 03300 – Cast‐In‐Place Concrete for additional details on constructing the concrete walls for the sand filter.

G. Miscellaneous Appurtenances

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1. Marking Tape. Place metallic core marking tape vertically above all buried sewer lines, 8” ‐ 12” below the ground surface during backfilling.

3.02 FIELD QUALITY CONTROL

A. Pressure Test

1. Test all sections of the gravity and pressure sewer lines according to Oregon DEQ regulations. Notify the CO at least two (2) working days in advance of the test to observe the test if they choose.

2. Perform a squirt height test on the lateral piping within the sand filter. Verify test details with ODEQ. ODEQ must be present for this test, so the contractor shall coordinate scheduling of the test with ODEQ and the CO.

B. Repair and Retesting of Defective Sections

1. Determine the source(s) of leakage and repair the defective pipe section(s) by removing, replacing, and relaying the pipe, or by installing a maximum of 1 manufactured full circle repair clamp per pipe section.

2. Repair and retest the section until a passing test is obtained. Repair and retesting of sections shall be done at no additional cost to the Government.

4. PART 4 – MEASUREMENT AND PAYMENT

4.01 METHOD OF MEASUREMENT

A. Measurement will be lump sum for the materials and labor associated with constructing the bottomless sand filter, including the filter media and all associated components specified, as well as those not specified but needed to yield a complete and properly‐functioning installation.

B. Construction of the concrete walls for the sand filter will be measured and paid for under

Section 03300 – Cast‐In‐Place Concrete.

4.02 BASIS OF PAYMENT

A. Payment will be at the Contract unit price for each item completed and accepted.

B. Payment will be made under:

PAY ITEM DESCRIPTION PAY UNIT

02530 Bottomless Sand Filter Lump Sum

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SECTION 02543

SEPTIC TANKS AND COMPONENTS

1. PART 1 ‐ GENERAL

1.01 SUMMARY

A. This Section specifies removing the existing septic tanks and furnishing and installing new septic tanks and their accessories, as shown in the Project Plans.

B. Contractor shall provide and install two (2) new 3,000 gallon prefabricated concrete septic tanks in series, a new 2,000 gallon prefabricated concrete dosing tank, tank accessories, and assembly components. Tanks are to be installed in the vicinity of the existing septic tanks, which shall be removed and legally disposed of off National Forest land.

C. Contractor shall provide and install a complete duplex pumping system with an effluent filtering system (Biotube®).

D. All pumping equipment shall be connected to the new sewage control electrical system.

Refer to Section 16000 – Electrical for more detail on the control panel and alarm.

E. All miscellaneous parts, equipment, and labor needed to make the septic tanks and components specified in this Section function properly, shall be considered incidental to the work of this Section.

1.02 QUALITY ASSURANCE

A. Inspect furnished property before transporting it to work site or installing the equipment.

Transport equipment according to manufacturer’s recommendations.

B. Install septic tanks and appurtenances watertight, and according to manufacturer’s recommendations and drawings and specifications of this contract.

C. Conform to applicable ODEQ, OARS 340‐073, and local regulations for work pertaining to this section.

D. To obtain technical support related to Orenco’s products and specifications, contact Orenco

Systems, Incorporated in Sutherlin, Oregon at 1‐800‐348‐9843, or at www.orenco.com

E. Materials and equipment shall be tested per Oregon DEQ regulations and the product manufacturers’ recommendations.

1.03 SUBMITTALS

A. Contractor shall submit to the CO three (3) copies of shop drawings and product cut sheets for each major component or any substitution, and 3 copies of manufacturer's literature.

B. Refer to Section 01300 – Submittals for additional details.

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2. PART 2 ‐ PRODUCTS

2.01 MATERIALS

A. General

1. Materials specified are available from Willamette Graystone: 3700 Franklin Blvd., Eugene 97403; (541) 726‐7666; contact Doug Dilley.

2. Alternate products and/or suppliers are acceptable if shown to be equivalent or superior to those specified.

3. Provide submittals as specified in Section 01300.

4. If proposing to use alternate materials, the submittals shall clearly indicate any differences in the salient characteristics between the specified and proposed alternate product(s).

5. Contractor shall be responsible for assuring compatibility between products from different manufacturers.

B. Septic Tanks

1. Two (2) 3,000 gallon concrete septic tanks in series with two (2) 24”‐diameter risers each, as shown on the Plans.

2. Tanks shall be listed and approved by Oregon DEQ.

3. Contractor shall coordinate delivery and installation of tanks with the manufacturer and CO.

4. Include 6” diameter cast‐a‐seal for the inlet and outlet piping.

5. Include 24” diameter riser starters for the access openings over the inlet and outlet ends.

6. Loads

a. Top = 400 psf

b. Lateral Load = 62.4 pcf

c. Concentrated Wheel Load = 2500 lb

d. The tank shall be capable of withstanding long‐term hydrostatic loading, in addition to the soil loading, due to a water table maintained at the ground surface.

e. Soil Bearing = 1500 psf (ensure equal soil bearing).

7. Concrete

a. The walls and bottom slab shall be poured monolithically.

b. Reinforcing steel shall be ASTM A‐615 Grade 60, yield strength of 60,000 psi.

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c. Shall have a minimum compressive strength of 4,000 psi in 28 days.

d. Concrete shall be ready mix with cement conforming to ASTM C‐150, Type II, and a content of not less than 6.5 sacks per cubic yard and maximum aggregate size of ¾”.

e. Water/cement ratio shall be kept below 0.4.

f. Tanks shall not be moved from the manufacturing site to the job site until the tank has cured for seven (7) days under proper conditions, or has reached two – thirds of the design strength. Proper curing techniques must be used to ensure water tightness.

C. Dosing Tank

1. One (1) 2,000 gallon concrete septic tank, single chamber, to be connected in line with the primary tankage, as shown on the Plans.

2. Tanks shall be listed and approved by Oregon DEQ.

3. Contractor shall coordinate delivery and installation of tanks with the manufacturer and CO.

4. Include a 6” diameter cast‐a‐seal for the inlet piping. Outlet shall be sized as appropriate for the lines from the duplex effluent pumps.

5. For the access openings, include a 24” diameter riser starter over the inlet end of the tank, and a 30” diameter riser starter over the outlet end (for ease of service / maintenance).

6. Loads

a. Top = 400 psf

b. Lateral Load = 62.4 pcf

c. Concentrated Wheel Load = 2500 lb

d. The tank shall be capable of withstanding long‐term hydrostatic loading, in addition to the soil loading, due to a water table maintained at the ground surface.

e. Soil Bearing = 1500 psf (ensure equal soil bearing).

7. Concrete

a. The walls and bottom slab shall be poured monolithically.

b. Reinforcing steel shall be ASTM A‐615 Grade 60, yield strength of 60,000 psi.

c. Shall have a minimum compressive strength of 4,000 psi in 28 days.

March, 2016 Horsfall Beach Septic System Replacement Section 02543 ‐ 4

d. Concrete shall be ready mix with cement conforming to ASTM C‐150, Type II, and a content of not less than 6.5 sacks per cubic yard and maximum aggregate size of ¾”.

e. Water/cement ratio shall be kept below 0.4.

f. Tanks shall not be moved from the manufacturing site to the job site until the tank has cured for seven (7) days under proper conditions, or has reached two – thirds of the design strength. Proper curing techniques must be used to ensure water tightness.

D. Geotextile Fabric

1. Provide Fiberweb, Inc. Typar® 3401 geotextile fabric, or approved equivalent product, to be installed under the base rock for the concrete tanks.

2. Non‐woven thermally bonded permeable geotextile fabric designed for construction applications.

3. Resistant to all naturally occurring soil acids and alkalis and unaffected by biological contaminants such as bacteria or fungi.

4. Allows full water penetration while separating fine soil material from larger material and offering ground reinforcement and stabilization.

E. Effluent Filters

1. Effluent filters shall comply with OARs 340‐073‐0056.

2. OSI FT 08 54 – 36 A, 8” diameter Biotube® effluent filter, or approved equivalent product.

3. Commercial application, rated for a flow of 2,500 gallons per day, minimum.

4. OSI PVU 57 – 18 19 Biotube® vault with filter, or approved equivalent product. Easy access to allow filter cartridge removal without pulling the pump or vault.

F. Tank Accessories

1. Supply green lids; five (5) 24”‐diameter PVC risers and one (1) 30”‐diameter PVC riser;

tank adapters; bolt down kits; structural adhesives; and other miscellaneous accessories as recommended by the manufacturer and/or needed to yield a proper installation.

2. Risers and lids shall be water tight and made out of non‐corrosive materials.

3. Provide a signal float with collar, to be installed for a remote alarm in the “clarifier” tank. OSI part # MF1A, or approved equivalent product.

G. Dosing Assemblies

1. Duplex Effluent Pumps, Sewage Alarm System, Sewage Control Panel, Dosing Siphon, etc. shall conform to OARS 340‐073‐0055.

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2. Duplex (two alternating) effluent pumps shall be automatically controlled by float switches.

a. Two (2) OSI PF 30 05 1 1 high head 30 gpm, ½ HP, pumps, or approved equivalent product.

b. Constructed of lightweight, corrosion‐resistant stainless steel and engineered plastics.

c. CSA certified to the U.S safety standards for effluent pumps, meeting UL requirements.

d. Minimum 24‐hour run‐dry capability with no deterioration in pump life or performance.

e. Franklin Electric super stainless steel motor, rated for continuous use and frequent cycling.

f. Five‐year warranty against defects in materials or workmanship.

3. Float Switch Assembly

a. Orenco Systems Incorporated (OSI) MF4‐A YP, B, R, W, VC, with 27” stem length, or approved equivalent product.

b. The pump “off” level shall be set to maintain the liquid level above the top of the pump or to the designer and pump manufacturer’s specifications.

4. An audible and visible alarm with manual silence switch shall be mounted to the exterior wall of the restroom building. Refer to Section 16000 for additional details.

5. External Splice Boxes

a. OSI SBEX1‐4 Series external splice boxes, or approved equivalent product.

b. Watertight for prolonged submergence per UL listing (Type 6P).

c. Four (4) cord grips.

d. Attaches to outside of access risers to allow inspection without opening the lid of the riser, and leaving more free space within the riser.

e. Molded of UL (f1) rated plastic, resistant to cold and UV exposure, designed for external applications.

H. Electromagnetic Flow Meter

1. Provide one (1) Elster AMCO EVOQ4, for 1 ½” diameter line, or approved equivalent product.

2. Stainless steel flow tube.

3. Continuous sampling rate of 0.5 second.

4. Stainless steel electrodes to prevent corrosion.

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5. No moving parts to be maintenance free.

6. Minimum 10 year battery life. Includes a low battery indicator to show when the meter should be replaced.

7. Accurate to within 0.75% of true value through the normal flow range.

8. Enclose in a 24” diameter riser basin for access. Supply a green lid and bolts for access to the top of the riser. Riser walls and lid shall be water tight and made out of non‐ corrosive materials.

I. Gate Valve

1. Provide two (2) Watts Series 405‐NRS‐RW 6”flanged gate valves, or approved equivalent product, in the approximate locations shown on the Plans.

2. Epoxy‐coated, cast iron body with ANSI B16.1 flanged connections, resilient wedge disc, cast iron bonnet, and bronze non‐rising stem.

3. Operated with a square head operating nut. Include a valve key with a handle that is long enough to reach and operate the valve without having to reach down into the valve box.

4. Include a 12” diameter valve box with water tight lid for each valve. The top of the valve box shall extend 3” above the finished ground elevation.

J. Automatic Distribution Valve Assembly

1. OSI V6606A, or approved equivalent product.

2. Mechanically operated to sequentially redirect the pumps’ flow to six separate distribution zones.

3. Includes an inlet ball valve and a section of clear pipe for monitoring.

4. Enclose in a 24” diameter riser basin for access. Supply a green lid and bolts for access to the top of the riser. Riser walls and lid shall be water tight and made out of non‐ corrosive materials.

3. PART 3 ‐ EXECUTION

3.01 CONSTRUCTION

A. Septic Tanks

1. Refer to Sheet 5 of the Project Plans, and Part 2.01 of this Section, for additional details on the construction of the concrete tanks.

B. Manholes and Covers

1. Provide each tank compartment with a manhole and cover (riser and lid), tank…