Attachment_7_-_Revised_Statement_of_Work_0001.docx

USGS OKI water science center Construction of a Monitoring Well TRANSECT NEAR HARLAN, in

INDEX TO TECHNICAL SPECIFICATIONS

Project No. 63169-A Locust Valley Water District

AGREEMENT NUMBER

Attachment A Statement of Work

1.0 sTATEMENT OF WORK Services, non-personal, to provide all equipment, labor, travel, and materials (unless otherwise provided herein) necessary for the installation of 67 monitoring wells. Continuous soil/sediment core sampling is required at 3 of the monitoring well locations. Specific task details for each monitoring well are provided in Section 4.1.

GENERAL SITE DESCRIPTION

The contractor shall perform drilling work at three agricultural sites near Harlan, Indiana. Site locations are described in Section 4.0 and shown in Figure 1.

cONTAMINANTS OF CONCERN Monitoring wells will be installed to sample nitrogen and phosphorous compounds in groundwater as part of a project investigating nutrient loading from groundwater to streams. Nitrate nitrogen concentrations in groundwater encountered at drilling sites may exceed the Environmental Protection Agency maximum contaminant level (MCL) of 10 mg/L.

Scope and Locations The U.S. Geological Survey (USGS) Ohio Kentucky Indiana Water Science Center (OKI WSC) requires the drilling of sixeven water-level monitoring wells.

The contractor shall provide drilling and construction of up to a known need of 67 boreholes and 67 monitoring wells with an option for additional boreholes and monitoring wells depending on funds availability in support of a research project. Funding will be limited to a cap.

The contractor shall include the furnishing of all labor, material, equipment, supplies and incidentals necessary for the construction of each monitoring well for the work to be performed under this contract. The work shall include the following:

Well drilling, installation of casing and well screen, filter pack, grouting, well development.

Installation of a protective riser and a concrete pad, site clean-up, and site restoration.

Site locations are in northeastern Indiana. A map showing the locations of the proposed sites is shown in figure 1. The table below includes specific location information and their depths:

Figure 1. Approximate location of boreholes near Harlan, IN. Deep monitoring wells will be installed where white circles are shown. Approximate locations of shallow wells are indicated by yellow triangles.

The contractor shall be prepared and willing to commence work immediately after notification of acceptance of proposal and shall complete all work within 45 days of contract execution. An extension can be granted at the discretion of USGS personnel.

The contractor shall use previous USGS publications and existing well logs as background information on the geology at the proposed well locations. No other background information will be provided to the contractor.

4.1 Task descriptions for individual wells

Task #1, MW BR-D1 This well is to be located north of the intersection of Highway 37 and Bull Rapids Road along the east side of Bull Rapids Road. There are no overhead power lines at this location. Continuous split spoon or direct push macrocore soil/sediment samples are required at this site. The well screened interval will cross the predominant sand and gravel aquifer used by nearby residents with an estimated depth between 60 and 70 feet below land surface (BLS). Final completion will be an above ground well casing with protective cover.

Task #2, MW BR-S1 This well is to be located north of the intersection of Highway 37 and Bull Rapids Road along the east side of Bull Rapids Road There are no overhead power lines at this location. The well screened interval will cross shallow sand and gravel sequences that occur above the primary aquifer used by nearby residents with an estimated depth between 25 and 45 feet below land surface (BLS). Final completion will be an above ground well casing with protective cover.

Task #3, MW BR-S2 This well is to be located north of the intersection of Highway 37 and Bull Rapids Road in a farm field west of Bull Rapids Road There are no overhead power lines at this location. Continuous split spoon or direct push macrocore soil/sediment samples are required at this site. The well screened interval will cross shallow sand and gravel sequences that occur above the primary aquifer used by nearby residents with an estimated depth between 25 and 45 feet below land surface (BLS). Final completion will be an above ground well casing with protective cover.

Task #4, MW E-D1 This well is to be located in a pasture north of Ehle Road approximately 1 mile east of the intersection of Ehle Road and Bull Rapids Road. There are no overhead power lines at this location. Continuous split spoon or direct push macrocore soil/sediment samples are required at this site. The well screened interval will cross the predominant sand and gravel aquifer used by nearby residents with an estimated depth between 60 and 70 feet below land surface (BLS). Final completion will be an above ground well casing with protective cover.

Task #5, MW E-S1 This well is to be located in a pasture north of Ehle Road approximately 1 mile east of the intersection of Ehle Road and Bull Rapids Road. There are no overhead power lines at this location. The well screened interval will cross shallow sand and gravel sequences that occur above the primary aquifer used by nearby residents with an estimated depth between 25 and 45 feet below land surface (BLS). Final completion will be an above ground well casing with protective cover.

Task #6, MW N-D1 This well is to be located at the edge of a farm field south of Notestine Road approximately 1 mile east of the intersection of Notestine Road and Bull Rapids Road. There are no overhead power lines at this location. The well screened interval will cross the predominant sand and gravel aquifer used by nearby residents with an estimated depth between 60 and 70 feet below land surface (BLS). Final completion will be an above ground well casing with protective cover. **NOTE residential well logs indicate flowing well conditions at this site and mud rotary drilling techniques will likelymay be required to install the monitoring well.

Task #7, MW N-S1 This well is to be located at the edge of a farm field south of Notestine Road approximately 1 mile east of the intersection of Notestine Road and Bull Rapids Road. There are no overhead power lines at this location. The well screened interval will cross shallow sand and gravel sequences that occur above the primary aquifer used by nearby residents with an estimated depth between 25 and 45 feet below land surface (BLS). Final completion will be an above ground well casing with protective cover. **NOTE residential well logs indicate flowing well conditions at this site and mud rotary drilling techniques will likely be required to install the monitoring well.

special conditions Drilling capabilities of the contractor’s equipment shall include the ability to core and/or sample aquifer material properties to a depth of 70 feet in glacial material. Further, the contractor shall be able to address the USGS’s needs by having immediate availability of all operational equipment necessary to conduct the specified work.

The contractor shall perform site cleanup, including removing drill cutting, and restore the site to pre-drilling conditions, including leveling disturbed ground and planting native grass seed, within 30 days of well completion.

The contractor shall adhere to local noise and light ordinances if they exist. Weekend work is to be avoided.

The contractor shall keep the site free of debris and shall remove all trash from the site daily. The entrance way to the monitoring well site shall be kept free of rubbish, dirt and other material.

The contractor shall take photos at the beginning and end of each work day to document the condition of the site before drilling, following conclusion of the work day, and the condition of the site following completion of work. The contractor shall coordinate with the onsite USGS Technical Liaison to provide photos daily while work is being completed.

Responsibility All responsibility for the entire work and accidents occurring therewith shall rest with the contractor constructing the work until its completion and acceptance.

The contractor shall comply with the U.S. Department of Labor Safety and Health Regulations for construction promulgated under the Occupational Safety and Health Act of 1970 (PL 91 596) as currently amended; and under Section 107 of the Contract Work Hours and Safety Standards Act (PL 9154), as currently amended, as a minimum requirement. In the event of conflict among said Safety and Health Regulations, the contract document and requirements of other regulatory agencies, the most stringent provisions shall be binding on the contractor.

In order to protect the lives and health of his employees under this contract, the contractor shall comply with all pertinent provisions of the "Manual of Accident Prevention in Construction", issued by the Associated General Contractors of America, Inc., and shall maintain an accurate record of all cases of death, occupational disease, and injury requiring medical attention, or causing loss of time from work, arising out of and in the course of employment on work under the contract. Contractor alone shall be responsible for the safety, efficiency and adequacy of his plant, appliances, and methods, and for any damage, which may result from their failure or improper construction, maintenance, or operation.

The selection of levels of personnel protective equipment is an iterative process based upon site specific conditions and available data. When no respiratory or dermal hazards exist, the contractor shall proceed with a minimally protective work uniform consisting of coveralls, reinforced work boots, hard hats and when needed gloves, ear, and eye protection. Although not anticipated at these sites, should the necessity for additional personnel protective equipment arise at Levels C or D, the contractor shall proceed accordingly and be prepared to supply such additional protection for contractor’s employees.

The contractor assumes all responsibility for loss or damage of equipment owned or operated by the contractor, his agents, or employees or subcontractor or for the injury to or death of the contractor, or his agents or employees, or his subcontractor. The contractor will hold and save the USGS OKIWSC, its officers, agents, servants and employees harmless from liability of any nature or kind for or on account of the use of any copyrighted or uncopyrighted composition, secret process, patented or unpatented invention, articles or appliances, used in the performance of this contract, including their use by the USGS OKIWSC unless otherwise specifically stipulated in the contract. The contractor will be responsible for any negligent or wrongful acts or omissions of the contractor, his employees, agents or subcontractors and employees or agents of the subcontractor(s) incident to the performance of this contract. The contractor will hold and save the USGS OKIWSC, its officers, and employees harmless from all liability for any death or damage to persons or to real or personal property, including negligent use of materials used in conjunction with, or incident to, equipment furnished by the contractor, or otherwise incident to performance of the contract. The contractor will not be responsible for any negligent or wrongful acts or omissions of the USGS OKIWSC, its employees, cooperators or their employees.

The omission of the phrase "the contractor shall" from these detailed specifications shall not be construed as relieving the contractor from full and complete performance of the work.

Applicable Codes and Regulations All work performed by the contractor shall be in accordance with federal, state, county and local codes and ordinances.

Standard Specifications The contractor shall follow the specifications provided by the Indiana Department of Natural Resources, Indiana Code 25-39 and corresponding rule, 312 IAC13. For more information, please see: https://www.in.gov/dnr/water/ground-water-wells/driller-and-pump-installer-licensing-and-continuing-education/.

Permits and Licenses The contractor, and/or subcontractors, shall be registered as licensed well drillers with the Indiana Department of Natural Resources in accordance with Indiana Code 25-39 and shall comply with all regulations and requirements of the Department.

The contractor shall procure all licenses or other permits, if any, and pay all taxes, fees, charges and give notices necessary and incident to the lawful prosecution of the work.

Materials Contractor shall provide all drilling materials All well casing, well screen, well protector, grout, and filter pack materials shall be previously unused and subject to the approval of the USGS OKIWSC. No deviations from the provisions of these detailed Specifications herein shall be made without written approval of the USGS OKIWSC.

The contractor shall use materials as described by the by the Indiana Department of Natural Resources (IDNR), Indiana Code 25-39 and corresponding rule, 312 IAC13.

Storage of Materials Contractor shall store materials as to insure the preservation of their quality and fitness for the work. Other private property shall not be used for storage purposes without the written permission of the USGS OKIWSC.

Protection of Existing Works Contractor shall protect all existing structures, piping, utilities, fencing or materials, “herein refer to as properties”, within each site area against damage as may be required by the USGS OKIWSC. The contractor shall be responsible for any damage to these existing properties during the operations and such damage shall be corrected by replacing the items damaged to their original condition and position at the contractor's cost and expense to the satisfaction of the USGS OKIWSC.

Local Conditions The contractor shall install all wells on a section of land as designated by USGS personnel near each proposed well location. The USGS OKIWSC will designate the general location where work will be performed. After the general location has been established, the contractor shall call (INDIANA811, (800) 382-5544 or 811) for a mark out of all utilities, i.e. electric, gas, water, sanitary sewer, drainage, telephone, irrigation, street lighting, or any other suspected underground appurtenances within the area. Upon mark out completion of all utilities, the contractor, with the concurrence of the USGS OKIWSC representative, shall determine the actual drilling site, which allows for safe drilling and does not interfere with any underground utilities and appurtenances.

The contractor shall obtain potable water for drilling purposes within permitted allowances of local water suppliers.

The contractor shall provide his own source of power If there is no available electrical power at a site.

Well Drilling The contractor shall primarily use hollow stem augers and/or mud rotary methods to drill 4 to 9.5-inch diameter boreholes for the purpose of installing a monitoring well in the borehole at each site.

The contractor shall drill each borehole to the total depth identified by USGS OKIWSC personnel. The final depths will depend on the depth at which glacial aquifers are encountered during drilling. It is expected that the wells will be drilled into unconsolidated deposits of gravel, sand, silt and clay and weathered bedrock. Geological conditions at the proposed well sites is not guaranteed by the USGS OKIWSC.

The contractor and/or sub-contractor shall be experienced with installing monitoring wells where flowing artesian well conditions are present and prepared to properly construct a flowing artesian well. For instance, grout density may need to be adjusted to control artesian flow during drilling as described in the Michigan Flowing Well Handbook that is the guidance document recommended by IDNR personnel: Microsoft Word - Flowing Well Handbook FINAL (michigan.gov). Flowing artesian well conditions are expected possible at the Notestine (N) site based on a review of available well logs in the vicinity that indicate static water levels between 2 feet below grade and 1 foot above grade.

The contractor shall use a portable mud pit when using the mud rotary method.

The contractor shall replace any equipment that is judged to be unsatisfactory with equipment which is acceptable to the USGS OKIWSC, and within sufficient time to complete the contract as scheduled.

The contractor shall provide all labor, tools, personnel and materials required to perform and complete the drilling in a safe and efficient manner. All cuttings will be properly removed from the site by the contractor.

The contractor shall drill the wells in a manner to allow continuous direct-push or split spoon sampling during drilling at the Bull Rapids (BR) and Ehle (E) sites. The contractor shall take test cores with a direct-push or split spoon core sampler, which shall be driven vertically into undisturbed formation material in the bottom of each advance. Test core sample collection is not required at the Notestine (N) site.

The contractor shall ensure that the wells are drilled true and plumb and check the plumbness of the wells minimally every 50 feet during the drilling process.

In accordance with Indiana Code 25-39 and corresponding rule, 312 IAC13; the contractor shall furnish to the IDNR, a complete log of the various strata encountered including depths of formation changes.

Well Casing and Screen Installation The contractor shall use methods in accordance with ASTM D5092 to install well casing and well screen and as indicated on each well construction drawing.

The contractor shall furnish and install 2-inch PVC Schedule 40 well casing together with required O-rings and/or pipe sealant/lubricant, plugs, caps, fittings, or other parts necessary to satisfactorily complete the casing installation. Casing and screen shall be installed sufficiently plumb to allow installation and operation of all sampling equipment by the USGS following the installation. No metal screws, clamps, or screens will be used in well construction. Plastic centralizers shall be used to plumb the casing in the borehole if deemed necessary.

The contractor shall furnish, clean and install 2-inch PVC Schedule 40 well screen with 0.010-inch slot size and all other fittings necessary for a complete installation. The contractor shall install a sand pack around the screen to a height of 2 ft above the top of the screen and grout annular space around each well in accordance with the Indiana Department of Natural Resources, Indiana Code 25-39 and corresponding rule, 312 IAC13.

The contractor shall develop each well until the water is clear and free of suspended sediment and pumping at an acceptable discharge rate as determined with the agreeance of the USGS OKIWSC onsite representative. Initial depth to water, constant pumping rate, pumping time, and final depth to water (drawdown) shall be measured during the development of the well and recorded.

The contractor shall ensure the pipe joints are free from any leakages of water into or from the surrounding formations.

If leaks are detected after well pumping, sampling, and cased geophysical logging, the contractor shall backfill and properly abandon the well at no charge to the USGS and replace the well.

Annular Space sandpack Material The contractor shall install a sand pack within the annular space surrounding the well screen to a height of 2 ft above the top of the screen.

The contractor shall furnish clean, sound, hard, durable stone conforming to the Indiana Department of Natural Resources, Indiana Code 25-39 and corresponding rule, 312 IAC13, for use in installing the sand pack. The material shall be placed at the direction of the USGS OKIWSC onsite representative at the depth and thickness between the well casing and outer wall of the annular space. The contractor shall take special care to avoid bridging and the creation of voids during the install.

The contractor shall remove obstacles restricting placement of sand or grout along the well casing prior to installation.

Cement/Bentonite Grout The contractor shall install a mix of bentonite grout in the annular space between the borehole wall and the well casing above the sand pack to the ground surface to completely grout the annular space. All work shall be as directed by the USGS OKIWSC onsite representative.

The contractor shall install and grout the monitoring well in accordance with Indiana Code 25-39 and corresponding rule, 312 IAC 13-8-3. Potable water shall be used for mixing cement grout.

The contractor shall circulate drilling fluids to remove any obstruction and open a clear annular space prior to installation.

Plumbness The contractor shall install each well plumb and true to line with a deviation from the vertical less than six (6) inches per one hundred (100) feet of depth as measured to the full depth of the well. In no event will these requirements be waived.

The contractor shall furnish all labor, materials, tools and equipment to run a test of plumbness of the completed test hole as directed by the USGS OKIWSC onsite representative. The USGS OKIWSC may require the contractor to run additional tests during the performance of the work to ensure the requirement is met.

Temporary Fence If equipment remains in-place overnight during drilling operations, the Contractor shall furnish and install temporary fence, including fabric, fence posts, etc. as directed by the USGS OKIWSC onsite representative for safety reasons.

If temporary fence is installed, the contractor shall protect and maintain the existing temporary fence at the site until the drilling equipment is removed. The Contractor shall then remove and legally dispose of the temporary fence around the well site.

Clearing and Grubbing The contractor shall include all labor, materials, tools and equipment necessary for clearing, grubbing, removing and disposing of all vegetation and debris (including earthen materials incidentally removed with vegetation and debris), and removing structures and obstructions located within the limits shown of the work area or designated by the USGS OKIWSC, except such objects as are designated to remain in place or are to be removed in accordance with other sections of these Specifications.

The USGS OKIWSC onsite representative shall establish the limits of the work area and will designate all trees, plants, shrubs and other items to remain. The Contractor shall include the preservation from injury or defacement of all vegetation and objects designated to remain.

The contractor shall conduct miscellaneous trimming of trees or shrubs designated to remain when directed by the USGS OKIWSC onsite representative. Trimming shall be in accordance with good tree surgery practice.

The contractor shall dispose of all vegetation and debris to be removed. The Contractor shall obtain all necessary permits to do so.

The contractor shall be responsible for securing waste disposal sites, obtaining written permission of the owner of the disposal site, securing any required permits, and responsible for the cost of securing such sites. The Contractor shall furnish the permit numbers of all required permits for disposal sites.

The contractor shall be responsible for grubbing all trees, stumps, roots and other objects not designated to remain. If the area is not to be benched, the removal of undisturbed stumps and roots and nonperishable solid objects that will be a minimum of four feet below the embankment surface and that do not extend more than six inches above the original ground line, will not be required.

The contractor shall cut off all stumps and nonperishable solid objects permitted to remain in place not more than six inches above the ground line or low water level in areas outside of the grading limits of cut and embankment areas and to the established limits of the Work The contractor shall backfill stump holes and other holes from which obstructions are removed with suitable materials and compacted except in areas to be excavated The contractor shall take care to ensure that the grass, moss cover, or the natural ground is not disturbed in areas where Hand Clearing is indicated or designated by the USGS OKIWSC onsite representative. Stumps shall be cut flush with the ground, except that in areas within four feet or more of embankment cover, stumps may be cut off 6 inches above the natural ground.

Topsoil If topsoil is used to restore the drilling area to original conditions, the Contractor shall work with the USGS OKI WSC onsite representative to identify suitable topsoil from the work area and, if additional topsoil is required, the contractor shall provide clean topsoil from off an offsite source.

The Contractor shall keep all topsoil free from roots and stones, and that portion which cannot be used immediately upon regarded areas is to be piled in neat spoil banks located in the work area as directed by the USGS OKIWSC onsite representative.

The contractor shall avoid admixture of subsoil and topsoil while stripping topsoil. If the amount of topsoil on the site is inadequate, the contractor shall furnish sufficient additional topsoil. No topsoil which has been stripped shall be removed from the site.

All topsoil shall be as approved by the USGS OKIWSC onsite representative.

Seeding The contractor shall seed the disturbed area when directed by the USGS OKIWSC onsite representative.

No seeding shall be done until the topsoil has been hand raked to the required finished grades.

The topsoil shall be smooth, friable and of a uniformly fine texture. No seed shall be sown unless the top surfaces of the seed bed is free of stones larger than ½-inch, roots, weeds, sod or other litter.

All seed shall be as approved by the USGS OKIWSC onsite representative.

Site Cleanup The contractor shall remove all tools, appliances, surplus materials, temporary drainage, rubbish and debris incidental to the work from site after completion of the work.

The contractor shall dress backfill excavation and vehicular ruts to conform to the existing landscape or terrain.

The contractor shall be responsible for the completion of all repairs or the replacement of utilities, structures, roads, fences, or any other pre-existing item damaged or destroyed due to the Contractor’s negligence prior to completion of contract.

The contractor shall be responsible for the disposal of drill cuttings, rock core, grout or bentonite slurry, and other solid or liquid materials bailed, pump or otherwise removed from the borehole during drilling, well installation and completion procedures within all appropriate regulatory requirements.

The contractor shall install a protective riser around each well. The USGS will install an instrument box and equipment following the completion of the well on top of the protective riser. An example photo of a completed monitoring well is included.

The contractor shall install a 3-foot square by 1.5-foot thick concrete well pad around each protective riser. The cement from the concrete base will extend down the borehole to below the frost line. The contractor shall install an identification and/or survey marker in the concrete pad. This marker will be supplied by the USGS.

Quality Assurance Surveillance Plan (QASP) Quality Assurance Surveillance Plan (QASP)

The contractor is responsible for quality control. The contractor shall implement its Quality Control Plan before contacting the USGS Technical Liaison (TL) to begin inspection for quality assurance.

The Government is responsible for quality assurance. The USGS TL will implement the following QASP to assure that the work statement tasks are performed to meet or exceed the acceptable quality standards and time standards for each task.

If/when the TL identifies substandard performance, the TL will need to name when contracting specialist drafts contract will notify the contractor. The contractor shall redo or resolve the identified substandard performance within 3 working days at no additional cost to the Government.

USGS OKI WSC staff will verify the work outlined in the Statement of Work for each technical specification in the following way:

Technical Specifications TS-2 FINAL - March 24, 2016 Sidney B. Bowne & Son, LLP image1.png image2.png