21R1339_AMD2.pdf

RFP No. N6274221R1339 Amendment No. 0002

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SPECIFICATIONS

SECTION 01 33 00 – SUBMITTAL PROCEDURES

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Submittal Register, Section 33 11 13, SD-06 Test Reports, Pump Test Equipment 3.3.1.2

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Submittal Register, Section 33 11 13, SD-06 Test Reports, Borehole Pump Test

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Water Samples

Add Under SD-06 Test Reports after Water Quality Test, add the following:

“Sand Content” for Description Item Submitted and “3.3.4” for Paragraph #.

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Under SD-06 Test Reports after Water Samples, add the following:

“Video Logging” for Description Item Submitted and “3.7” for Paragraph #.

SECTION 01 57 19.01 20 – SUPPLEMENTAL TEMPORARY ENVIRONMENTAL CONTROLS

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Attachments “Coconut Rhinoceros Beetle (CRB) and Little Fire Ant (LFA) Management Procedures” and “Appendix”.

Attachments “Coconut Rhinoceros Beetle (CRB) and Little Fire Ant (LFA) Management Procedures (Ver4. Revised 08.02.2021)”.

SECTION 01 57 19.03 – SUPPLEMENTAL TEMPORARY ENVIROENMENTAL CONTORLS (MRESS)

Paragraph 1.4 Anomalies, First sentence “[20 mm projectile, project’s approved Target of Interest

(TOI)]”.

“20 mm projectile, project’s approved Target of Interest

(TOI)”.

SECTION 01 57 19.04 – SUPPLEMENTAL TEMPORARY ENVIRONMENTAL CONTROLS (DPRI)

Attachment “GENERAL HANDLING

REQUIREMENTS OF HIGH VALUE TREES”

Attachment “Standard Operating Procedure For Delivering High Value Trees, dtd 8/16/2018”.

SECTION 33 11 13 – POTABLE WATER SUPPLY WELLS

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Pages 1-23

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Pages 1-20

RFP No. N6274221R1339 Amendment No. 0002

DRAWINGS

The following drawings supersede previously issued drawings bearing the same number and title:

DRAWING

NUMBER

NAVFAC

DRAWING

NUMBER

DESCRIPTION

CW501 17241443 Revise casing guides on Typical Well Construction Detail.

Coconut Rhinoceros Beetle (CRB) and Little Fire Ant (LFA) Management Procedures (Ver4. Revised 08.02.2021)

BACKGROUND

Green waste has the potential to harbor and spread invasive species around Guam and increases the potential of dispersing invasive species to other islands within Guam’s transportation network. The green waste management procedures identified below are an important step in regional biosecurity.

Little Fire Ant

Little Fire Ant (Wasmannia auropunctata) (LFA), originally from Central and South America, has spread throughout tropical regions over the last 100 years and was discovered in Guam in 2011. Since its discovery in northern Guam, LFA has been confirmed in at least 28 additional locations all over Guam.

LFA disperse slowly on their own but can be spread rapidly by people who inadvertently move them on yard waste, recycled goods or garbage. LFA have multiple queens that mate within or near the parent colony, where fertilized queens spread on foot nearby with a few workers. These new nests remain connected with the parent colony where food gathering and defenses are shared, resulting in large “supercolonies.” LFA nest in the ground up to the canopy. These supercolonies are constantly producing new queens and workers, so colonies can remain viable even after the loss of some workers or queens.

LFA will prey on insects, invertebrates, small vertebrates, will attack larger wildlife, cause blindness in pets and painful stings to people. Implementing early detection surveys as part of green waste management during DPRI projects that involve vegetation clearing or landscaping will reduce and minimize the occurrence and potential ecological, economic, safety and health risks associated with LFA.

Coconut Rhinoceros Beetle

The coconut rhinoceros beetle (CRB) is a pest of palm trees, including: coconut, betel nut, and pandanus.

It is also known to attack banana, taro, pineapple, sugar cane and other plants. The adults damage palms by boring into the center of the crown and feeding on the sap and developing leaves, creating V-shaped cuts in the fronds. The boring into the palms is often lethal. Immature stages (eggs, grubs, pupae) are found in dead coconuts and piles of rotting vegetation. Most recent research (Moore et.al, 2015) found CRB at all life stages in the crowns of selected palms. Although CRB are established on Guam island-wide, a multi-faceted control effort on Guam and emphasis on preventing CRB from invading neighboring islands and Hawaii is a high priority. Therefore, limiting the breeding sites is critical during green waste management.

GENERAL REQUIREMENTS

The Contractor shall notify the Construction Management Engineer (CME) and Marine Corps Base Camp Blaz EV (MCBCB-EV) Biosecurity Program Manager/ Government Biomonitor at least two weeks prior to scheduled vegetation removal. No vegetation removal/clearing will be conducted without prior Government approval.

1) The Contractor’s Hazard Analysis and Critical Control Point (HACCP) Plan will include CRB and LFA Management Procedures.

2) The Contractor will maintain a clean work site that is subject to review and inspection by the Government Biological Monitor. Vegetation debris left on site that is not mulched or properly managed could facilitate infestations of CRB, LFA, or other species.

3) No green waste from outside Department of Defense property is allowed to be processed in conjunction with the green waste generated by Defense Policy Review Initiative Environmental Office (DPRI) construction projects.

SPECIFIC REQUIREMENTS

LFA Procedures:

Step 1. Vegetated areas that will be cleared and mulch stockpile surveys

The following methods shall be applied to this step:

a. The Contractor shall survey (test) green waste stockpiles for LFA at least twice before final disposition within the project footprint. LFA survey options are as follows:

i. Survey 1: LFA survey shall be conducted prior to vegetation clearing in high risk areas.

High risk areas include vegetation adjacent to known LFA infestations. The Government is responsible for notifying the Contractor of these high risk areas. The Contractor shall notify the Government Biomonitor and Biosecurity Program Manager if positive test results are observed prior to proceeding with any vegetation clearing within these areas.

1. Green waste and solid waste from known LFA infested areas will be processed separately at a Government approved site. Equipment used to handle material will be washed down at a designated temporary HACCP wash down station prior to exiting the known LFA area.

2. Proceed directly to Step 2.

ii. Survey 2: LFA survey shall be conducted 30-45 days following processing of green waste to mulch at the designated Green Waste Processing Area (GWPA). (In accordance with Step1, a., iii., a.)

iii. Survey 3: LFA survey shall be conducted no more than two weeks prior to final disposition of processed green waste, such as: mulch or cured compost (LFA Fact Sheet 7 Little Fire Ants and Mulch, https://littlefireants.com/wp-content/uploads/07-LFA-Fact- Sheet_v7.2_Jul-2017-min.pdf).

a) The Contractor shall survey around the edge of the stockpile by taking bait lures (chopsticks or 60cc vials (Biolab or similar) and smearing them with a very thin layer of peanut butter on half the stick or inside the vial), and place them around the pile every 10 feet. LFA prefer cool shaded areas, ensure the sticks or vials are covered by old leaves, piece of cardboard, etc. Surveys shall be conducted in the early morning or late afternoon to avoid the higher temperatures of mid-day. Leave the bait lures in place for at least 30 minutes, but no longer than one hour before picking up to examine. If LFA are in the mulch pile they will be present on the bait lure. LFA are very small, less than 3mm or 1/8th inch long, uniformly orange color and are slow in movement. (How to identify LFA, https://littlefireants.com/wp-content/uploads/How-to-Identify-LFA-Field-and- Microscope-Guide_18May20.pdf).

b) If an LFA survey is suspected to be positive the Contractor shall bring the suspected specimen to the University of Guam (UOG) Extension Service for positive identification.

c) The Contractor shall notify the Government Biomonitor and Biosecurity Program Manager when turning in a specimen to the UOG Extension Service for identification.

d) If UOG Extension Service positively identifies the LFA specimen, then the Contractor shall notify Government Biomonitor and Biosecurity Program Manager immediately.

e) Step 2 below shall be applied within 24 hours of positive identification.

f) The Contractor shall provide all green waste LFA survey results monthly to

Government Biomonitor.

Step 2. Quarantine and treatment of LFA positive stockpiles

The following methods shall be applied to this step:

a. Quarantine green/solid waste stockpile.

i. The green/solid waste shall be left in place and low-hanging vegetation that is within the 3m isolation buffer around the LFA positive stockpile shall be cut and added to the pile to ensure no further spread occurs to surrounding areas, unless low hanging vegetation and buffer is outside of the project footprint. Cutting vegetation outside of the project footprint is not authorized. Government Biomonitor shall be contacted to address alternative options in the case of conflicting circumstances.

ii. Allow the greatest amount of sunlight exposure to stockpile (i.e. remove any obstructions, overhead or adjacent to the stockpile for maximum sun exposure).

iii. Place high visibility rope/flagging around LFA positive stockpile including a 3m isolation buffer with signs that warn personnel on site of LFA presence and treatment.

iv. Provide GPS location and stockpile size to the Government Biomonitor and Biosecurity Program Manager.

v. No additional vegetation shall be added to the stockpile that is not within the 3m isolation buffer.

vi. Provide specific HACCP training to workers managing the quarantine stockpile.

vii. Immediately apply, according to label instructions, a barrier pesticide around the outside of the isolated green/solid waste pile to prevent spread to areas beyond the pile.

b. Treatment of Stockpile

i. Treatment of stockpiles are to include procedures outlined in the Hawai’i Ant Lab website

(LFA Fact Sheet 7, https://littlefireants.com/wp-content/uploads/07-LFA-Fact- Sheet_v7.2_Jul-2017-min.pdf). Bait applications will be applied over and around the pile at least 4 times at 4-6 week intervals.

ii. The Contractor shall report all chemical usage on the NAVFAC Online Pesticide Reporting System (NOPRS) and shall follow all EPA labeling requirements/instructions.

The Contractor shall be in possession of all permits and/or certifications necessary to conduct the activities stipulated for eradication of LFA.

iii. Treatment plans shall be submitted to the Government no later than two weeks after positive identification of LFA.

iv. Once the treatment period is complete, the Contractor shall survey the whole mulch pile again, as described above (In accordance with Step1,a.,iii.,a.) to ensure LFA have been eradicated. Treatment of stockpile (Step 2, b.) will be repeated if a positive test result is observed during this step.

v. Green waste processing of the stockpile may resume once LFA surveys yield negative results and approval is given by Biosecurity Program Manager and/or Government Biomonitor.

CRB Procedures:

The Marine Corps Base Camp Blaz Public Works Department Environmental Office (MCBCB-EV) approved methods for handling green waste are described below and will be dependent on the amount of green waste generated by the specific project.

Non-CRB host plants are approved for Methods 1, 2 and 3. For CRB host plants (coconut palms, betel nut, and pandanus) only Methods 2 and 3 are applicable. The Intermediate Method, as described below, will be applied to processed green waste piles and prior to application of Methods 1-3. The Contractor shall determine the appropriate method based on the amount of green waste and submit their processing method to MCBCB-EV for approval as part of the Site-Specific Waste Management Plan. The approved implementation method will also be included in the Hazard Analysis & Critical Control Point (HACCP) Plan. If the method selected is not effective in preventing the establishment of CRB breeding sites (i.e.

grubs are found in processed material not protected by Intermediate Method) the Contractor shall work with MCBCB-EV to determine a more successful approach and revise their HACCP Plan.

Method 1- Mulch and Spread: This method is only approved for non-CRB host plant vegetation after the green waste has been processed into mulch.

The following procedures shall be applied to this method:

a. Mulch the green waste and spread on-site, with a depth of no greater than two inches to avoid creating breeding habitat for CRB.

b. Incorporate the mulch into existing soil as soon as possible to discourage beetle breeding and to aid in site stabilization (to control stormwater runoff).

c. The final spread of mulch shall only be used within the project footprint where no further earth moving activities will disrupt the mulch and soil mixture.

Method 2 - Compost: This method does not require separating CRB host plants from other vegetation.

The following procedures shall be applied to this method:

a. Mulch the green waste material and compost.

b. To minimize the risk of fire, stockpile height should not exceed 15 feet.

c. The Contractor shall monitor the compost pile weekly for evidence of CRB infestation (CRB count) and the temperature shall be measured and recorded using a compost thermometer.

d. If the compost pile appears dry, add water until the pile is moist. Optimal composting temperature is between 120-140 degrees F with 50-55% moisture.

e. When temperature of the compost pile exceeds 145 degrees F, the Contractor shall turn the pile using a bulldozer, backhoe, or similar equipment to maintain the optimal compositing conditions.

f. All CRB (grubs and adults) found in pile shall be recorded, killed and removed from netting of the pile.

g. Intermediate Method described below shall be used if compost is infested with grubs until such time that the material can be processed through a grinder/shredder to destroy the grubs and inspected by the Government Biomonitor prior to resuming compost activities.

h. The Contractor shall provide following records monthly to the Government Biomonitor.

i. Temperature

ii. Moisture level

iii. Number of times the pile was turned, and date turned

iv. Number of CRB observed and life-stage found in pile.

Method 3: Air curtain burners

The following procedures shall be applied to this method:

a. Air curtain burners require the Contracting Officer’s approval and coordination with MCBCB-EV prior to implementation.

b. This method shall be used sparingly as regulatory agencies are expected to limit usage to emergency situations for the processing of small volumes only.

c. The Contractor is responsible for obtaining all permits and licenses to operate an air curtain burner.

Intermediate Method – Tekken Net: This method shall be used within 30 days when Contractor does not actively apply Methods 1, 2 or 3 to process green waste (mulch).

The following methods shall be applied to this method:

a. Cover mulch green waste piles with a gill/fishnet, called tekken in Chamorro. Tekken net shall be a one-inch mesh measured knot to knot made from 0.25 mm nylon monofilament and laid over piles of green waste.

b. To minimize the risk of fire, stockpile height should not exceed 15 feet.

c. The green waste piles must be completely covered by the net without any holes or gaps greater than one inch to be effective. Green waste piles are attractive to CRB; they will be trapped in the net if they are trying to get into or emerging out from the green waste pile.

d. The tekken net shall be inspected weekly to ensure there are no holes or gaps in the netting and the net should be clear of weeds and other vegetation to allow for CRB observations. The netting should completely cover all processed mulch at the base of the mulch stockpile.

e. All observed CRB caught in the net shall be removed, killed and recorded by the Contractor.

f. The Contractor shall provide weekly records of tekken net maintenance and CRB observations to the Government Biomonitor monthly.

PERFORMANCE STANDARD

All vegetation/green waste material is processed by the Contractor in accordance with procedures outlined above to prevent the spread of LFA and the creation of CRB breeding sites on all DPRI projects.

08/16/2018

Standard Operating Procedure For Delivering High Value Trees

Objective

The following standard operating procedures will provide proper guidance for delivering high value trees (HVT) from construction site to a designated staging site, the Guam Raceway Park located in Yigo, Guam (Fig.1). Processing and handling of HVT will follow the General Handling Requirements of High Value Trees (Apendix.1)

High Value Tree Delivery Procedures

1. Contractor will salvage HVT onsite and place them in a temporary “HVT

Laydown Area.” (Appendix 1, Handling and Processing Procedures)

2. Contractor will conduct Little Fire Ants (LFA) surveys for HVT at the construction laydown site before transport to final staging site at Guam Raceway Park, Yigo.

2a.Government will conduct LFA survey of the staging site, Guam Raceway Park, Yigo.

3. Contractor will conduct a visual inspection for Coconut Rhinoceros Beetle (CRB) presence for HVT onsite before transport to the staging site, Guam Raceway Park, Yigo.

3a.Government will conduct CRB survey at the staging site.

4. If survey results are negative of LFA and CRB presence, contractor can proceed to transport HVT to the staging site, Guam Raceway Park, Yigo.

4a.If LFA and/or CRB are found on or around high value trees, contractor is required to perform corrective actions to deter the spread of LFA and/or CRB from their project site in accordance with their HAACP Plan.

4b.When new HVT are added to previously surveyed/inspected pile prior to transport, a re-survey for LFA and CRB will be required to ensure that there is no LFA or CRB presence for additional trees.

5. Government will tag all HVT with a specific identification number for internal records.

6. Government will provide HVT length specifications to the contractor as determined by master carvers (Appendix 2).

6a.Contractor will label each cut segment of tree with the identification number provided by the Government to enable identification of wood species after delivery to the staging site. (ex: If HVT “1ARMAJ001B” is cut into two individual pieces, both pieces will be labelled as “1ARMAJ001B”)

08/16/2018

6b.Contractor will notify and coordinate transfer of HVT with the Government seven days (7) days prior to HVT delivery to the staging site, Guam Raceway Park, Yigo.

7. Contractor will deliver and unload high value trees at the Guam Raceway Park staging site.

6a.Government will divide the staging site according to tree species type and provide a map of the staging site to the contractor (Fig. 1).

6b.Contractor will unload HVT in specific areas by species type (Government biological monitor will aid in HVT designation)

8. Contractor will complete HVT chain of custody (Appendix 3) after HVT transport/off-loading has been completed and submit to Govt. representative onsite.

9. Government will coordinate with Government of Guam, Department of Chamorro Affairs and village mayors for distribution of HVT.

P h i l i p p i n e S e a

P a c i f i c O c e a n

0 180 36090 Meters

MAP PROJECTION & SCALE

DATUM: WGS 1984

PROJECTION: TRANSVERSE MERCATOR

COORDINATE SYSTEM: UTM ZONE 55N

MARINE CORPS ACTIVITY GUAM

DPRI PLANING AND DESIGN GROUP

GEOREADINESS CENTER

CONTACT: (671) 355-1340

DISCLAIMER: THIS MAP AND DATA CONTAINED HEREIN IS FOR

OFFI-CIAL USE ONLY. ALL DATA SHOWN IS CONSIDERED

UNCLASSIFIED SENSI-TIVE UPON AGGREGATION.

REPRODUCTION, DIS-TRIBUTION, PUBLICATION, OR EXHIBI-TION

OF THIS DATA IS STRICTLY PROHIBITED WITHOUT THE WRITTEN

CONSENT OF THE JOINT REGION MARIANAS GEOREADINESS

CENTER (GRC). THE GRC DOES NOT ATTEST TO OR GUARANTEE

Guam Raceway Park

Rou te 1

Rou te 1

Guam Race way P ark

Ro ute

Stag ing Site

Figure 1Chln Lujuna

MAP TITLE

MAP DATE

LOCATION / INSTALLATION

MAP KEY

DATE SOURCES: GPMO June 2018 MCAG July 2018

Guam Raceway Park Staging Site

16 August 2018

Guam International Raceway Park

Route to Staging site Staging Site

OtherELJOARALARMAINBI

Appendix 1

GENERALHANDLING REQUIREMENTS OF HIGH VALUE TREES

1. Identification The Government will identify high value tree (HVT) species that will require additional handling and processing procedure. The list of trees has been determined by the Government natural resources personnel in coordination with the Government of Guam, Department of Chamorro Affairs (DCA), Table 1. The trees will be marked with flagging tape. Marked trees shall not be disturbed until the Government determines that the trees have been properly handled. Other trees may be added to the list and will require further coordination with the Government on a project specific level.

Table 1

Scientific Name Common Name

Intsia bijuga Ifit

Elaeocarpus joga Joga

Cycad micronesica** Cycad

Serianthes nelsonii* Hayun lagu

Artocarpus mariannensis Breadfruit, Dukduk

Artocarpus artilis Breadfruit, Lemai

Ficus prolixa and Ficus tinctoria Banyon

Eugenia bryanii* No Common Name

Heritiera longipetiolata* Ufa-halomtano

Psychotria malaspinae* Aplokating-palaoan

Tabernaemontana rotensis** No Common Name

Bulbophyllum guamense** Siboyas halumtanu/Siboyan halom tano

Dendrobium guamense** No Common Name

Tuberolabium guamense** No Common Name

Maytenus thompsonii No Common Name

Elatostema calcareum No Common Name

Procris pedunculata No Common Name

Hernandia sonora No Common Name

Pisonia grandis No Common Name

*Federally listed endangered species **Federally listed threatened species

2. General Handling and Processing Procedures Specific requirements may be required at the project level. The general guidelines are as follows:

Tree Species Handling and Processing Procedures

Intsia bijuga, Elaeocarpus joga, Artocarpus mariannensis, Artocarpus artilis, Hernandia Sonora, and Pisonia grandis

1. Leave in place to the greatest extent practicable

2. Seeds may be gathered by the master carvers or medicinal plant collectors during a site visit prior to vegetation clearing

3. The contractor shall cut the trees at the base and haul the trees to a laydown area within the project site and separately from green waste

4. The logs of the same type of tree will be placed together

5. Appropriate handling considerations shall be provided to prevent the mishandling of timber in such a way that would adversely affect its value as a commodity for artful purposes such as carving and woodworking

6. The contractor shall store the trees in the laydown area until the master carvers are ready to pick-up and the contractor will transport the trees to a designated off-base meeting location, easily accessible by roads

7. The master carvers may request that the trees be cut by the contractor into smaller segments, exact lengths will be determined by the master carvers

Serianthes nelsonii This tree is protected by the Endangered Species Act and shall not to be disturbed. A minimum buffer of 100 foot is to be maintained around the tree

Cycad micronesica This tree is protected by the Endangered Species Act and shall not be disturbed. A third party contactor will be used for cycad salvage and transplantation.

Tabernaemontana rotensis and Heritiera longipetiolata, These trees are protected by the Endangered Species Act.

1. Leave in place to the greatest extent practicable

2. Do not disturb until a third party contractor has completed seed collection

Eugenia bryanii, Psychotria malaspinae

These shrubs are protected by the Endangered Species Act.

1. Leave in place to the greatest extent practicable

2. Do not disturb until approved by the Government

Bulbophyllum guamense, Dendrobium guamense, and Tuberolabium guamense, These epiphytic orchids are protected by the Endangered Species Act.

1. Leave in place to the greatest extent practicable

2. Do not disturb until approved by the Government

Ficus prolixa and Ficus tinctoria

Leave in place to the greatest extent practicable

Elatostema calcareum, Procris pedunculata, and Maytenus thompsonii

1. Leave in place to the greatest extent practicable

2. Do not disturb until approved by the Government

Appendix 2

Species type Species Code HVT length specifications

Artocarpus altilis Aral Do not cut log into sections, remove branches and roots

Artocarpus mariannensis Arma Do not cut log into sections, remove branches and roots

Instia bijuga Inbi Branches and roots will used by carvers as well, cut log into as large as manageable sections

Elaeocarpus joga Eljo Cut log into as large as manageable sections, remove branches and roots

Appendix 3 High Value Trees (HVT) Drop‐Off Chain of Custody

Date: Time:

Company: Driver Name:

Project Site of Origin: Drop‐off Location:

Has KTR surveyed HVT for Little Fire Ants (LFA) prior to loading? Yes No

Were the survey results negative for LFA? Yes No

If above answered no, were corrective actions applied before loading? Yes No N/A

Corrective Action(s) performed:

Was a re‐survey conducted after corrective actions were applied? Yes No

Were the survey results negative for LFA (if no, then continue to apply corrective actions until results are negative for LFA presence) Yes No

Has KTR inspected HVT for Coconut Rhinoceros Beetle (CRB) presence? Yes No

Were CRB present within HVT? Yes No

If CRB present, list corrective action(s) performed:

Were the HVT cleared of soil, epiphytes, or other non‐targets prior to loading? Yes No

Was the load brought directly to drop off location? Yes No

Were the HVT labeled by a Government Biological Monitor? Yes No

Species Type Species Code Quantity Other Notes:

Artocarpus altilis ARAL

Artocarpus mariannensis ARMA

Instia bijuga INBI

Elaeocarpus joga ELJO

Other (specify) Signature of Driver: Signature of Receiving Party:

Department of Chamorro Affairs Signature of Receipt:

Printed Name of receiving party:

P-103 WATER WELL FIELD 1371087

US NAVSUPACT ANDERSEN GUAM

SECTION 33 11 13

POTABLE WATER SUPPLY WELLS

08/17

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN WATER WORKS ASSOCIATION (AWWA)

AWWA A100 (2015) Water Wells

AWWA B300 (2010; Addenda 2011) Hypochlorites

AWWA B301 (2010) Liquid Chlorine

AWWA C654 (2013) Disinfection of Wells

ASTM INTERNATIONAL (ASTM)

ASTM A409 (2015) Standard Specification for Welded Large Diameter Austenitic Steel Pipe for Corrosive or High-Temperature Service

ASTM C150/C150M (2020) Standard Specification for Portland Cement

ASTM D2488 (2017; E 2018) Standard Practice for Description and Identification of Soils (Visual-Manual Procedure)

1.2 ADMINISTRATIVE REQUIREMENTS

1.2.1 Notification

Notify the Installation Environmental Coordinator (IEC) and the Contracting Officer 21 days prior to drilling. The Contracting Officer is responsible for contacting the Guam EPA in accordance with the applicable reporting requirements. Before beginning work, notify the local United States Geological Survey office (USGS), University of Guam Water and Environmental Research Institute (WERI), and the State Environmental Protection office of the type and location of wells to be constructed, the method of construction and anticipated schedule for construction of the wells.

1.2.2 Delivery, Storage, and Handling

Store and maintain well materials in a clean, uncontaminated condition throughout the course of the project.

SECTION 33 11 13 Page 1

AMD 0002

1.2.3 Project and Site Conditions

Access to each well site, including any utility clearance, permits such as Well Drilling Permit from Guam Environmental Protection Agency, licenses, or other requirements and the payment thereof necessary for execution of the work, is the responsibility of the Contractor. Furnish a copy of all permits, licenses, and other legal requirements necessary for execution of the work 30 working days before commencement of the work. Obtaining rights-of-entry is the responsibility of the Contractor. Visit each proposed well location to observe any condition that may hamper transporting equipment or personnel to the site. If clearing, or relocation is necessary, the Contractor, Installation Environmental Coordinator, and the Contracting Officer must agree on a suitable clearing, or relocation plan, and the location of any required access road.

1.2.4 Water Well Design Requirements

1.2.4.1 Well Installation Plan

Submit a plan as specified herein describing the drilling methods, sampling, and well construction and well development 30 calendar days prior to beginning drilling operations. Mobilization activities may start prior to submittal of the plan. The plan must be approved and signed by an experienced geologist as specified in paragraph QUALIFICATIONS.

Incorporate the following requirements into the Well Installation Plan and follow them in the field. The design of the well is to be based on the various aspects analyzed and contained in this plan (boring log, geotechnical report, sieve analysis, etc.). The plan must include, but not be limited to, a discussion of the following:

a. Description of well drilling methods, and installation procedures, including any temporary casing used, placement of seal materials, drill cuttings and fluids disposal, and soil sample disposition.

b. Description of well construction materials, including well screen, riser pipe, centralizers, air line and gauge, tailpiece (if used), drilling mud, drilling fluid additives (if used), drilling water, cement, and well protective measures.

c. Description of quality control procedures to be used for placement of seals in the boring, including depth measurements.

d. Forms intended for written boring logs, installation diagrams of wells, well development records, well sampling data records, state well registration forms, and well abandonment records.

e. Description of contamination prevention and well materials and equipment decontamination procedures.

f. Description of protective cover surface completion procedures, including any special design criteria or features relating to frost heave prevention. Include the maximum frost penetration for the site in this description.

g. Description of intended well development methods.

h. List of applicable publications, including state and local regulations and standards.

SECTION 33 11 13 Page 2

i. List of personnel assignments for this project, and personnel qualifications.

j. Description of well decommissioning or abandonment procedures.

k. Description of well capacity testing techniques.

l. Description of permanent pump to be installed, and discussion of pump operating tests to be employed at the site.

m. Description of specific methods to be employed to control potential contamination or pollution arising from well installation activities.

n. Description of plumbness and alignment testing.

o. Description of specific methods employed to test for sand.

1.2.4.2 Test Borehole

Before starting construction of the well, drill a test borehole of at least 300 mm in diameter at the location of the well into the target water bearing strata. Drill test wells in a manner to protect the subsurface from surface contamination. Carefully advance test borehole and sample to determine the presence of the upper aquiclude if one exists. Use the test borehole to determine the expected flow, optimum depth for flow, water quality, and to identify the strata encountered. Log test wells in accordance with paragraph BOREHOLE LOGS. The test borehole may be converted to the permanent well, in accordance with these specifications.

If the test borehole is not used for the permanent well, abandon the test borehole as specified in paragraph WELL DECOMMISSIONING OR ABANDONMENT.

1.2.5 Qualifications

Submit personnel qualification documentation. A geologist with at least 3 years experience in soil logging, and well installation, must be on site during drilling, installation, and testing activities, and be responsible for all borehole logging, drilling, well installation, developing and testing activities. Employ a driller licensed in Guam, according to the state requirements. Demonstrate the log analyst competence through background, training, and experience when so called upon. Document a minimum of 5 years of well installation experience.

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for Contractor Quality Control approval. Submittals with an "S" are for inclusion in the Sustainability eNotebook, in conformance to Section 01 33 29 SUSTAINABILITY REPORTING.

Submit the following in accordance with Section 01 33 00 SUBMITTAL

PROCEDURES:

SD-02 Shop Drawings

Installation Diagrams; G

SD-03 Product Data

Well Casing

SECTION 33 11 13 Page 3

Cement

Drilling Mud

Well Screens

SD-05 Design Data

Well Installation Plan; G

SD-06 Test Reports

Pump Testing

Test For Plumbness And Alignment

Water Quality Test

Sand Content

Tests

Driller's Log

Water Samples

Video Logging

SD-07 Certificates

Site Conditions

Project Photographs

Qualifications

Casing

Air Line and Gauge

Casing Certification

Casing Guide

Cement Basket

SD-11 Closeout Submittals

Survey Maps And Notes; G

Well Development Records

Decommissioning or Abandonment Record

Well Operating Permit

SECTION 33 11 13 Page 4

PART 2 PRODUCTS

2.1 CASING

2.1.1 Well Casing

All solid casing shall be 300 mm diameter new stainless steel, Type 304, manufactured in accordance with ASTM A409. The wall thickness of the solid casing shall be 7.94 mm. Pieces of the solid casing shall be furnished in 6.1-meter long pieces.

2.1.2 Well Screens

All louver-type well screen shall be 300 mm diameter new stainless steel, Type 304, manufactured in accordance with ASTM A409. The wall thickness of the louver-type well screen shall be 7.94 mm. Pieces of the louver-type well screen shall be furnished in 6.1-meter long pieces. The louver-type well screen shall be machine made, arrayed horizontal to the axis of the well screen with the aperture facing downward. The aperture size shall be 3.0 mm and the total area of the openings shall not be less than 1304 square centimeters per lineal meter of well screen.

2.1.3 Casing Markers

Each length of solid casing and louver-type well screen shall be marked by the casing manufacturer with the following information:

a. Manufacturer's identification

b. Nominal thickness of casing wall

c. ASTM designation and trade name of the steel used for the manufacture of the casing

All markings shall be clear and legible and shall be within one (1) meter from one end of each casing.

2.1.4 Casing Certification

Prior to the delivery of any casing to the project site, the Contractor shall submit for approval the casing manufacturer's certification to the Contracting Officer. The certificate shall clearly indicate the total footage and number of casings shipped, the name of the customer, and the physical and chemical properties of the casing materials. ASTM designation and trade name of steel may be used to designate the physical and chemical properties, respectively.

2.1.5 Casing Guide

Provide casing guides at a minimum of two locations: midway along the length of the louver-type well screen; and midway between the upper cement basket and ground surface. Casing guide shall be Type 304 stainless steel and welded to the casing. Certification of the casing guides shall be included with the casing certification submittal.

2.1.6 Casing Shoe

The lower end of the louver-type well screen shall have a welded casing shoe of a minimum thickness of 19 mm, a minimum length of 200 mm and be

SECTION 33 11 13 Page 5

Type 304 stainless steel.

2.1.7 Cement Basket

Provide two commercially made cement baskets, with all steel parts made of Type 304 stainless steel. Certification of the cement baskets shall be included with the casing certification submittal.

2.2 CEMENT

2.2.1 Cement Grout

Provide cement grout consisting of Portland cement conforming to ASTM C150/C150M, Type I or II, sand and water. Proportion cement grout not to exceed 2 parts, by weight, of sand to 1 part of cement with not more than 23 liters of water per 42.6 kg bag of Portland cement, with a mixture of such consistency that the well can be properly grouted. No more than 5 percent by weight of bentonite powder may be added to reduce shrinkage.

2.3 PERMANENT PUMP

Provide submersible vertical turbine pump in accordance with Section

43 24 27 PUMPS: WATER, VERTICAL TURBINE.

2.4 CONTAINERS FOR DRILL CUTTINGS

2.4.1 Containers for Drill Cuttings

Drill cuttings and driven samples required for geotechnical purposes are to be sealed in air-tight liter size containers. Place individual sample containers in partitioned boxes.

2.4.2 Labeling of Drill Cutting Containers

Label individual sample containers with the project name, date of sample, well number and depth at which the sample was taken. Label both the container and lid in permanent indelible ink. Label partitioned cardboard box with project number and well number.

PART 3 EXECUTION

3.1 PROTECTION OF EXISTING CONDITIONS

The Contractor shall maintain existing survey monuments and wells, and protect them from damage from equipment and vehicular traffic. Any items damaged by the Contractor shall be repaired by the Contractor. Wells requiring replacement due to Contractor negligence shall be re-installed in accordance with these specifications. Wells scheduled for abandonment shall be protected from damage so that abandonment may be performed in accordance with these specifications. Prior to excavation, the Contractor shall obtain written approval from the local utility companies to drill at each site, to avoid disturbing buried utilities.

3.2 WELL DRILLING AND CONSTRUCTION

3.2.1 General

Locate the well as indicated and construct in accordance with these

SECTION 33 11 13 Page 6 specifications. The borehole shall be drilled plumb and straight as specified herein. The diameter of the borehole for the well shall provide a minimum of 75 mm all around the outside diameter of the casing to be installed including the outside diameter of the welding collar. No deviation from this size requirement shall be allowed.

The exact depth of the borehole will depend on the nature of the material penetrated by drilling and on hydrologic conditions encountered and shall be determined by the Contracting Officer during the course of the drilling. To determine the exact depth and dimensions of the well upon completion of drilling, the Contractor shall, in the presence of the Contracting Officer, take careful measurements to determine the depth of the hole.

3.2.2 Driller's Log

a. It is desirable to gather as much geologic and hydrologic data as possible and the Contractor shall cooperate to allow reasonable time for the Contracting Officer to collect samples and make observations in addition to those carried out by the Contractor and to study the geologic and hydrologic conditions encountered during the progress of drilling.

b. The Contractor shall keep a continuous log of the well, recording the general character, thickness, type and drilling characteristic of materials encountered including the depth and drilling time, the color and hardness of the formations, and all other data which may be helpful in the interpretation of the geology, hydrology, and drilling conditions in the area. The log shall indicate the depths where water is encountered and pertinent facts connected with its occurrence. The Contractor shall also collect, bag, label, and retain samples of the drill cuttings taken at 1.5-meter intervals and at any change of stratum for the entire depth of the borehole drilled. Once water is encountered in the hole, the Contractor will be required to measure and record the depth to water at the start of each shift of drilling.

All other information such as the location of significant solution cavities and cave-ins shall also be noted in the log. All work done shall be accurately recorded. An accurate and carefully recorded log shall be kept current and available at the well site for inspection by the Contracting Officer at any time during the work. One (1) copy of each day's drilling log shall be submitted to the Contracting Officer on a weekly basis.

c. The Contracting Officer will provide a permanent elevation benchmark in the near vicinity of the well site. It shall be the Contractor's responsibility, using a licensed surveyor, to establish the measuring point elevation at the well itself using the Contracting Officer provided benchmark. The Contractor shall assist the Contracting Officer in determining the elevation of the water level in the drilled hole. The Contractor shall make all water level measurements with a two-conductor, flat tape electrical probe marked 3 mm (0.01 feet) intervals. The Contractor shall measure the depth to water level (DTW) in the well to the nearest 3 mm (0.01 feet) with reference to the established benchmark (reference elevation) at each well site.

d. DTW measurement shall be taken at the start of the next day's shift after water is first encountered in the well. The DTW measurements shall include date, time and well depth.

SECTION 33 11 13 Page 7

3.2.3 Drilling Method and Circulating Medium

If a rotary drilling method is used, a mixture of air and foam is to be used. Bentonite or other, similar material shall only be used when absolutely necessary for the progress of work and only with prior approval of the Contracting Officer. Use of bentonite or similar material shall not be allowed from the depth at which groundwater is encountered to the bottom of the well. Water or a mixture of air and foam shall be the only acceptable circulating fluid used once groundwater has been encountered.

3.2.4 Protection of Work

During the progress of the work, the Contractor shall provide an adequate cover over the top of the hole to prevent debris or other objects from entering the well when the crew is not at the well site. The Contractor shall preserve the well in good condition until the Contracting Officer's final acceptance of the work.

3.2.5 Casing Installation

a. Field assembly of the casing string shall be by welding only.

Threaded and coupled joints will not be allowed. The ends of the casing are to be prepared for welding with 50 mm welding collars.

Bell and spigot welded ends shall not be allowed. The collars shall be of the same thickness and have the same physical and chemical properties as the corresponding casing section, shall be 50 mm minimum in width, shall be rolled to fit the outside diameter, and shall be welded to the casing section. The inside edge of the collars shall be ground or sufficiently scarfed to remove sharp edges or burrs.

Section ends shall be machined flat perpendicular to the axis of the casing and shall not vary more than 0.25 mm at any point from a true plane at right angles to the axis of the casing.

b. The casing shall be installed in the presence of and to the lengths directed by the Contracting Officer. All sections of casing shall be installed with the collar facing upward, enabling the plain end of the next section of casing to be inserted into the collar. All welding shall be conducted with E-308L-16 electrodes of 4 mm to 4.75 mm size.

The casing shall be properly aligned and welded by qualified welders and shall also be continuous for its entire length. Every precaution shall be taken to prevent the casing from dropping into the hole.

Driving of the casing in any manner shall not be permitted.

c. The Contractor shall carefully lower the casing until the bottom of the casing is at the final depth but in no case shall be closer than

0.3 meters from the bottom of the drilled hole. At no time during the installation of the casing shall the total weight of the casing rest on the bottom of the drilled hole. The casing shall then be temporarily secured and the well initially developed and cleaned by bailing. The well must be cleaned of drilling muds, drill cuttings, cave-in materials, etc., to the satisfaction of the Contracting Officer.

The casing shall be held in this position until installation of grout in the annular space has been completed and the grout has been allowed 72 hours to set.

3.2.6 Cement Basket

Provide two commercially made cement baskets 1.5 meters above top of well screen. Provide a 910 mm-plug on the upper cement basket consisting of

SECTION 33 11 13 Page 8 coarse sand and/or pea gravel. Plug shall be installed through the use of a tremie pipe. Measurements of the quality of sand and/or gravel installed and the rise of the annular fill above the cement stall be submitted to the Contracting Officer prior to installing ground in the annulus.

3.2.7 Filling of Annular Space

3.2.7.1 General

This section covers the installation of cement grout in the annular space between the wall of the drilled hole and the casing. All work required in this section shall be done during normal daylight working hours. The Contractor shall notify the Contracting Officer not less than 48 hours prior to performing any work under this section.

3.2.7.2 Cement-Grouting of Annular Space

a. The cement grout shall consist of a mixture of one part Portland cement and not more than 23 Liters of water per sack of cement to form a consistency such that grout may be placed.

b. Grout placed in the annulus shall be installed by tremie pipe in one continuous operation starting from the bottom of the space to the grouted and proceeding upward in such a manner that the hydrostatic pressure of the grout will not distort or collapse the casing.

c. It is essential that the entire annular space around the grouted section of the casing be completely filled with grout. Grout shall be placed in a manner that will avoid segregation of materials, inclusion of foreign material, and bridging of grout materials. No drilling operation or other work in the well shall be permitted within 72 hours of grouting the annular space.

3.3 TESTS

3.3.1 Pump Testing

3.3.1.1 General

Pump testing of each well shall be conducted to determine yield, drawdown, recovery, and quality of water at various rates of pumping. Pump tests shall be conducted in the open borehole and after installation of the casing and grouting the annulus. Submit Test Reports within 24 hours following the conclusion of each test.

3.3.1.2 Pump Test Equipment

The Contractor shall furnish all equipment and manpower, and supply the power necessary to perform the pump test and specified herein. Equipment and methods common to both the open borehole and finished well pump tests shall be as follows:

a. A flowmeter and adjustable angle or gate valve downstream of the meter shall be provided to regulate and control the flowrate. The flowmeter shall have an indicator hand, which enables the flowrate to be determined by timing a volume of water pumped. Flowrates determined directly in LPM or GPM by a magnetic drive indicator hand shall be not be acceptable.

SECTION 33 11 13 Page 9

b. Free discharge from the pump shall be at a level above the centerline of the flowmeter, ensuring full pipe flow through the meter itself.

There shall be straight sections of matching diameter pipe before and after the flowmeter equivalent to a minimum of ten (10) and five (5) pipe diameters, respectively.

c. The discharge shall be a sufficient distance and appropriate location from the well such that the pumped water will continuously flow away from the well. Ponded pumped water within 75 meters of the well shall not be acceptable.

d. Two 31 mm diameter PVC sounding tubes shall be strapped securely to the pump column for all pump tests. Water level shall be measured by Contractor in one of the sounding tubes using a Contractor-supplied flat type electric sounder with 3 mm (0.01 foot) interval markings on the tape. The second sounding tube is reserved for use by the Contracting Officer.

e. Water samples shall be collected at the times specified and analyzed for chloride concentration and specific conductance. The analyses are to be conducted by an analytical laboratory approved by the Contracting Officer prior to the commencement of testing.

3.3.1.3 Borehole Pump Test

The open borehole pump test shall consist of two parts, a short-term step-drawdown test followed by a longer-term constant rate test. The open borehole testing shall be conducted as follows:

a. The depth of setting of the pump intake shall be as specified by the Contracting Officer.

b. The static water level shall be measured 30, 20, 10 and 5 minutes prior to the start of pumping.

c. The test pump shall be capable of delivering up to 945 liters per minute to the ground surface for at least 24 hours continuously.

d. The step-drawdown test shall be conducted at four different rates of pumping for approximately 30 minutes at each rate.

e. The rates of pumping in the step-drawdown shall be graduated sequentially from 378 liters per minute at the start to 945 liters per minute at the fourth and final step.

f. At the start of pumping and at each change in pumping rate, the water level shall be measured at one-minute intervals for the first 10 minutes and at 5-minute intervals thereafter.

g. Water samples shall be collected at five times through the step-drawdown test for chloride and specific conductance analyses:

within five (5) minutes of the start of the pumping and at the end of each of the four pumping steps. A duplicate set of water samples shall be collected and delivered to the Contracting Officer.

h. Recovery of the water level and the end of the step test pumping shall be measured at 1-minute intervals for the first 10 minutes; thereafter at 5-minute intervals for the the first 60 minutes of pumping; and

SECTION 33 11 13 Page 10 thereafter at 30-minute intervals for the remainder of the 24 hours of pumping.

i. The constant rate test shall begin 60 minutes after the step test pumping is completed or after full recovery of the static water level. Pumping shall be conducted continuously for 24 hours at 945 liters per minute or at the rate specified by the Contracting Officer.

j. Water level during the constant rate test shall be measured as follows: at 1-minute intervals for the first 10 minutes; thereafter at 5-minute intervals through the first 60 minutes of pumping; and thereafter at 30-minute…