Attachment 6 - UFGS 33 11 13.pdf

USACE / NAVFAC / AFCEC / NASA UFGS- 33 11 13 ( August 2017)

Pr epar i ng Act i v i t y: USACE Superseding UFGS- 33 20 00 ( Apr i l 2008)

UNI FI ED FACI LI TI ES GUI DE SPECI FI CATI ONS

Ref er ences ar e i n agr eement wi t h UMRL dat ed Jul y 2023

SECTION TABLE OF CONTENTS

DIVISION 33 - UTILITIES

SECTION 33 11 13

POTABLE WATER SUPPLY WELLS

08/17

PART 1 GENERAL

1.1 UNIT PRICES

1.1.1 Test Well

1.1.2 Water Well

1.1.3 Observation Well

1.1.4 Geophysical Logging

1.1.5 Well or Test Well Decommissioning or Abandonment

1.1.6 Cleanup

1.2 REFERENCES

1.3 ADMINISTRATIVE REQUIREMENTS

1.3.1 Notification

1.3.2 Delivery, Storage, and Handling

1.3.3 Project and Site Conditions

1.3.4 Water Well Design Requirements

1.3.4.1 Well Installation Plan

1.3.4.2 Test Wells

1.3.4.3 Sampling for Geotechnical Analysis

1.3.4.4 Observation Wells

1.3.4.5 Geophysical Logging

1.3.5 Qualifications

1.4 SUBMITTALS

PART 2 PRODUCTS

2.1 CASING

2.1.1 Steel Casing and Couplings

2.1.2 Plastic Casing and Couplings

2.2 WELL SCREENS

2.2.1 Metal Screen

2.2.2 Plastic Screen

2.2.2.1 Plastic Pipe

2.2.2.2 Bonding Materials

2.2.2.3 Plastic Well Screen

SECTION 33 11 13 Page 1

2.3 FILTER PACK

2.4 BENTONITE SEAL

2.5 CEMENT AND BENTONITE GROUT

2.5.1 Cement Grout

2.5.2 Bentonite Grout

2.6 PERMANENT PUMP

2.7 CONTAINERS FOR DRILL CUTTINGS AND CORED ROCK SAMPLES

2.7.1 Containers for Drill Cuttings

2.7.2 Labelling of Drill Cutting Containers

2.7.3 Packaging of Cored Rock Samples

2.7.4 Labeling of Cored Rock Sample Containers

PART 3 EXECUTION

3.1 PREPARATION

3.1.1 Protection of Existing Conditions

3.1.2 Decontamination

3.1.3 Water Source

3.2 DRILLING, CONSTRUCTION AND TESTING

3.2.1 Well Drilling and Construction

3.2.1.1 General

3.2.1.2 Setting Outer Casing

3.2.1.3 Temporary Casing

3.2.1.4 Construction of Inner Casing and Screen

3.2.1.5 Construction of Filter Pack

3.2.1.6 Bentonite Seal Placement

3.2.1.7 Grout Placement

3.2.2 Well Development

3.2.2.1 Site Access and Predevelopment

3.2.2.2 Jetting

3.2.2.3 Intermittent Pumping

3.2.2.4 Surging

3.2.2.5 Well Development Criteria

3.2.3 Tests

3.2.3.1 Capacity Test

3.2.3.2 Test for Plumbness and Alignment

3.2.3.3 Water Quality Test

3.2.3.4 Sand Test

3.3 REQUIREMENTS AFTER TESTING

3.3.1 Installation of Permanent Pump

3.3.2 Disinfecting

3.3.3 Pumphouse and Slab

3.3.4 Site Clean-up

3.3.5 Drilling Waste Disposal

3.3.6 Surveys

3.4 FIELD QUALITY CONTROL

3.4.1 Well Decommissioning or Abandonment

3.4.2 Documentation and Quality Control Reports

3.4.2.1 Borehole Logs

3.4.2.2 Installation Diagrams

3.4.2.3 Well Development Records

3.4.2.4 Geophysical Logs

3.4.2.5 Well Decommissioning or Abandonment Records

3.4.2.6 Tests

3.4.2.7 Project Photographs

3.4.2.8 Survey Maps and Notes

ATTACHMENTS:

SECTION 33 11 13 Page 2

Water Quality Analysis Table

-- End of Section Table of Contents --

SECTION 33 11 13 Page 3

USACE / NAVFAC / AFCEC / NASA UFGS- 33 11 13 ( August 2017)

Pr epar i ng Act i v i t y: USACE Superseding UFGS- 33 20 00 ( Apr i l 2008)

UNI FI ED FACI LI TI ES GUI DE SPECI FI CATI ONS

Ref er ences ar e i n agr eement wi t h UMRL dat ed Jul y 2023

SECTION 33 11 13

POTABLE WATER SUPPLY WELLS

08/17

NOTE: Thi s gui de speci f i cat i on cover s t he r equi r ement s f or dr i l l i ng of wat er suppl y wel l s, f ur ni shi ng and i nst al l i ng t he pump, and associ at ed testing.

Adher e t o UFC 1-300-02 Uni f i ed Faci l i t i es Gui de Speci f i cat i ons ( UFGS) For mat St andar d when edi t i ng t hi s gui de speci f i cat i on or pr epar i ng new pr oj ect speci f i cat i on sect i ons. Edi t t hi s gui de speci f i cat i on f or pr oj ect speci f i c r equi r ement s by addi ng, del et i ng, or r evi s i ng t ext . For br acket ed i t ems, choose appl i cabl e i t em( s) or i nser t appr opr i at e i nf or mat i on.

Remove i nf or mat i on and r equi r ement s not r equi r ed i n r espect i ve pr oj ect , whet her or not br acket s ar e present.

Comment s, suggest i ons and r ecommended changes f or t hi s gui de speci f i cat i on ar e wel come and shoul d be submi t t ed as a Criteria Change Request (CCR) .

PART 1 GENERAL

DRAWINGS

Dr awi ngs shoul d i ncl ude t he f ol l owi ng and any ot her i nf or mat i on necessar y t o i ndi cat e l ayout and gener al conf i gur at i on of t he wel l .

Di amet er of dr i l l ed hol e

Casi ng si zes - out s i de casi ng, i nsi de casi ng

Wel l scr een si ze

Mi ni mum dept h of out er casi ng and mi ni mum dept h

SECTION 33 11 13 Page 4 of wel l scr een

Li mi t s of gr avel envel ope ar ound i nsi de casi ng and scr eens

Li mi t s of neat cement gr out ar ound out er casi ng

Locat i on of ai r l i ne and al t i t ude gage

Type of cap, cover , or seal r equi r ed at t op of well

Requi r ed wel l capaci t y i n gal l ons per mi nut e.

1.1 UNIT PRICES

NOTE: Separ at e pay i t ems f or t est hol es and wat er wel l s must be i ncl uded i n t he cont r act .

I f Sect i on 01 20 00 PRI CE AND PAYMENT PROCEDURES i s i ncl uded i n t he pr oj ect speci f i cat i ons, appr opr i at el y edi t t hi s subpar t and move i nt o Section 01 20 00.

Payment for each specified item will be made at the contract unit price for that item. Payment includes full compensation for equipment, materials and labor for drilling; removal and disposal of temporary casing, cuttings, and drill fluid; preparation of borehole logs; and sample handling, containers, storage, and testing. Measure depth, logging, installation, casing, riser pipe, and well screen by linear distance. Payment is not allowed for test wells or wells abandoned due to construction practices not in accordance with this specification, faulty construction practices or for the convenience of the Contractor.

1.1.1 Test Well

Compensation for the test well will be made at the contract unit price and includes material, equipment, and labor required to drill and perform tests on the test well. Measure depth as the total linear distance between ground surface and bottom of hole. If the total depth of hole is greater than that specified on the contract for "Test Well," the additional depth will be paid for at the contract unit price for "Additional Test Well Depth." If the test well is developed into the permanent well with no increase in diameter, compensation will be as described below, and separate payment will not be made for the test well.

1.1.2 Water Well

Compensation for the water well will be made at the contract unit price and includes material, equipment, and labor required to drill, develop, perform tests, and complete the permanent well. Measure depth as the total linear distance between ground surface and bottom of hole. If the total depth of well is greater than that specified in the contract for "Water Well," the additional depth will be paid for at the contract unit price for "Additional Water Well Depth."

SECTION 33 11 13 Page 5

1.1.3 Observation Well

Compensation for an observation well will be made at the contract unit price and includes material, equipment and labor required to drill, install, and complete the observation well, as well as perform tests and permanently grout it after use. Measure depth as the total linear distance between ground surface and bottom of hole. If the total combined depth of observation wells is greater than that specified in the contract for "Observation Wells," the additional depth will be paid for at the contract unit price for "Additional Observation Well Depth."

[ 1.1.4 Geophysical Logging

NOTE: Del et e t hi s par agr aph i f not appl i cabl e f or t he pr oj ect .

The "Geophysical Logging" unit price will include interpretation of the logs and their delivery to the Government.

] 1.1.5 Well or Test Well Decommissioning or Abandonment

Permanent decommissioning or abandonment of wells or test wells will be paid for only if it becomes necessary to abandon a well or test well as specified, and only for work completed and accepted as specified. Payment includes compensation for drilling, casing removal, well sampling, materials, cement, mixing of cement, bentonite, and water, pumping of grout, equipment, removal of foreign objects, and transportation necessary to abandon the well or test well and for the required well or test well abandonment records.

1.1.6 Cleanup

Separate payment will not be made for cleanup of the site. Cleanup means restoring the site to its pre-construction condition, in accordance with paragraph SITE CLEANUP. Cleanup is considered part of and incidental to the drilling, construction, or decommissioning of the well.

1.2 REFERENCES

NOTE: Thi s par agr aph i s used t o l i s t t he publ i cat i ons c i t ed i n t he t ext of t he gui de speci f i cat i on. The publ i cat i ons ar e r ef er r ed t o i n t he t ext by basi c desi gnat i on onl y and l i s t ed i n t hi s par agr aph by or gani zat i on, desi gnat i on, dat e, and t i t l e.

Use t he Ref er ence Wi zar d' s Check Ref er ence f eat ur e when you add a Ref er ence I dent i f i er ( RI D) out si de of t he Sect i on' s Ref er ence Ar t i c l e t o aut omat i cal l y pl ace t he r ef er ence i n t he Ref er ence Ar t i c l e. Al so use t he Ref er ence Wi zar d' s Check Ref er ence f eat ur e t o updat e t he i ssue dat es.

Ref er ences not used i n t he t ext wi l l aut omat i cal l y be del et ed f r om t hi s sect i on of t he pr oj ect speci f i cat i on when you choose t o r econci l e

SECTION 33 11 13 Page 6 r ef er ences i n t he publ i sh pr i nt pr ocess.

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 10084 (2017) Standard Methods for the Examination of Water and Wastewater

AWWA A100 (2020) Water Wells

AWWA B300 (2018) Hypochlorites

AWWA B301 (2018) Liquid Chlorine

AWWA C200 (2012) Steel Water Pipe - 6 In. (150 mm) and Larger

AWWA C206 (2017) Field Welding of Steel Water Pipe

AWWA C654 (2021) Disinfection of Wells

ASTM INTERNATIONAL (ASTM)

ASTM A53/A53M (2022) Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

ASTM A139/A139M (2022) Standard Specification for Electric-Fusion (ARC)-Welded Steel Pipe (NPS 4 and over)

ASTM A312/A312M (2022a) Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes

ASTM C136/C136M (2019) Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates

ASTM C150/C150M (2022) Standard Specification for Portland Cement

ASTM D1586/D1586M (2018) Standard Test Method for Standard Penetration Test (SPT) and Split-Barrel Sampling of Soils

ASTM D1587/D1587M (2015) Thin-Walled Tube Sampling of Soils for Geotechnical Purposes

ASTM D1784 (2020) Standard Specification for Rigid Poly(Vinyl Chloride) (PVC) Compounds and Chlorinated Poly(Vinyl Chloride) (CPVC) Compounds

ASTM D1785 (2015; E 2018) Standard Specification for Poly(Vinyl Chloride) (PVC), Plastic Pipe, SECTION 33 11 13 Page 7

Schedules 40, 80, and 120

ASTM D2216 (2019) Standard Test Methods for Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass

ASTM D2239 (2012) Standard Specification for Polyethylene (PE) Plastic Pipe (SIDR-PR) Based on Controlled Inside Diameter

ASTM D2487 (2017; E 2020) Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System)

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

ASTM D4318 (2017; E 2018) Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils

ASTM D5088 (2020) Decontamination of Field Equipment Used at Nonradioactive Waste Sites

ASTM D5299/D5299M (2017) Standard Guide for Decommissioning of Ground Water Wells, Vadose Zone Monitoring Devices, Boreholes, and Other Devices for Environmental Activities

ASTM D5521/D5521M (2013) Standard Guide for Development of Ground-Water Monitoring Wells in Granular Aquifers

ASTM D5608 (2016) Decontamination of Field Equipment Used at Low Level Radioactive Waste Sites

ASTM F480 (2014; R 2022) Standard Specification for Thermoplastic Well Casing Pipe and Couplings Made in Standard Dimension Ratios (SDR), SCH 40 and SCH 80

U.S. ARMY CORPS OF ENGINEERS (USACE)

CED TR GL-85-3 (1985) Geotechnical Descriptions of Rock and Rock Masses

U.S. ENVIRONMENTAL PROTECTION AGENCY (EPA)

EPA 600/4-79/020 (1983) Methods for Chemical Analysis of Water and Wastes

1.3 ADMINISTRATIVE REQUIREMENTS

1.3.1 Notification

Notify the [Installation Environmental Coordinator (IEC)][_____][ and the ] Contracting Officer [21][_____] days prior to drilling. The

SECTION 33 11 13 Page 8

[Contracting Officer][Contractor][Installation Environmental Coordinator (IEC)][_____] is responsible for contacting the [State of [_____]][USEPA] in accordance with the applicable reporting requirements. Before beginning work, notify the local United States Geological Survey office (USGS)[ and the ][State Environmental Protection office][State Geological Agency][state health department][local health department] of the type and location of wells to be constructed, the method of construction and anticipated schedule for construction of the wells.

1.3.2 Delivery, Storage, and Handling

Store and maintain well materials in a clean, uncontaminated condition throughout the course of the project. Do not allow filter pack material to freeze before installation.

1.3.3 Project and Site Conditions

Access to each well site, including any utility clearance, permits, licenses, or other requirements and the payment thereof necessary for execution of the work, is the responsibility of the [Contractor][Government]. 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][Government]. 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.]

1.3.4 Water Well Design Requirements

1.3.4.1 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, geophysical 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 filter pack and seal materials, drill cuttings and fluids disposal, and soil and rock sample disposition.

b. Description of well construction materials, including well screen, riser pipe, centralizers, air line and gauge , tailpiece (if used), filter pack and filter pack gradation, bentonite or 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

SECTION 33 11 13 Page 9 filter pack and seals in the boring, including depth measurements.

d. Forms intended for written boring logs, installation diagrams of wells, geophysical logs, 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.

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 and discussion of geophysical techniques to be employed at the site.

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

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

o. Description of plumbness and alignment testing.

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

1.3.4.2 Test Wells

NOTE: The t est wel l and capaci t y t est shoul d be speci f i ed i f t her e i s r eason t o bel i eve t hat t he wel l may not pr oduce t he r equi r ed yi el d at t he desi gn dept h. I f t he r equi r ed yi el d i s not obt ai ned, t he t est wel l may be dr i l l ed deeper or t he l ocat i on changed bef or e t he compl et e wel l i s const r uct ed. Requi r ement s f or t he t est wel l may be del et ed i f t he wel l i s t o be const r uct ed i n an ar ea wher e ot her wel l s of s i mi l ar dept h and desi gn ar e per f or mi ng adequat el y. However , a dr i l l l og shoul d be made and capaci t y t est shoul d be per f or med f or al l wel l s t o pr ovi de an " as- bui l t " r ecor d.

Before starting construction of the well, drill a test well of at least [100][_____] mm [4][_____] inches in diameter at the location of the well into the target water bearing [stratum][strata]. Drill test wells in a

SECTION 33 11 13 Page 10 manner to protect the subsurface from surface contamination. Carefully advance test wells and sample to determine the presence of the upper aquiclude if one exists. Properly case, grout and seal the boring into the aquiclude before the boring is advanced through the aquiclude into the aquifer. Use the test well to determine the expected flow, optimum depth for flow, water quality, and to identify the strata encountered. Before conducting a capacity test, case the well, and screen in accordance with these specifications. Log test wells in accordance with paragraph BOREHOLE LOGS. A temporary casing [may][must] be used. If used, seat the temporary casing [into the top of the rock][at the top of the stratum being tested]. The test well may be converted to the permanent well, in accordance with these specifications. If the test well is not used for the permanent well, abandon the test well as specified in paragraph WELL

DECOMMISSIONING OR ABANDONMENT.

1.3.4.3 Sampling for Geotechnical Analysis

NOTE: Sampl i ng f or chemi cal and geot echni cal anal ysi s may be combi ned t o al l ow f or obt ai ni ng sampl es f or bot h i f t hat accompl i shes pr oj ect r equi r ement s. I f r ock i s cor ed at t he s i t e, and i t i s det er mi ned t hat i t shoul d be r et ai ned, i t shoul d be boxed, and phot ogr aphed. I t s st or age, and l at er di sposal shoul d be i n accor dance wi t h ER 1110- 1- 1901, and t he pr oper st or age and handl i ng pr ot ocol f or such mat er i al as may be r equi r ed by ot her Feder al , st at e, or l ocal l aws, r egul at i ons and per mi t s.

Take samples of all materials penetrated by each drilled well or test well. Obtain soil samples with a [split][thin-walled] tube sampler using standard sampling techniques in accordance with [ ASTM D1586/D1586M ][ ASTM D1587/D1587M ]. Extract samples from their in-situ environment in as near an intact, minimally disturbed condition as technically practical.

Obtain samples continuously through the area expected to be screened.

Provide sieve analyses of all drive-sampled material. Conduct sieve analyses in accordance with ASTM C136/C136M. Determine the gradation of the natural formation through the use of sieve analyses performed on formation samples taken from the areas to be screened. Place drive-sampled materials in airtight containers and label as specified in paragraph SAMPLE CONTAINERS. Deliver samples to the [Contracting Officer][designated facility]. Test representative soil samples for grain-size distribution by mechanical means (sieves down to the 0.074 mm No. 200 size according to ASTM C136/C136M), moisture content according to ASTM D2216 and Atterberg limits according to ASTM D4318. Describe and identify soils in accordance with ASTM D2488. Perform laboratory classification of soils in accordance with ASTM D2487. Perform sampling to allow completion of the documents described in paragraph BOREHOLE LOGS.

1.3.4.4 Observation Wells

NOTE: I n some cases an obser vat i on wel l or wel l s shoul d be dr i l l ed an appr opr i at e di st ance f r om t he t est hol e or pump wel l . The obser vat i on wel l s ( pi ezomet er s) shoul d be moni t or ed dur i ng t he yi el d t est of t he t est hol e and/ or capaci t y t est of t he

SECTION 33 11 13 Page 11 pump wel l so t hat val i d i nf or mat i on of aqui f er pot ent i al and char act er may be obt ai ned. The obser vat i on wel l s must be desi gned, i nst al l ed and r emoved f r om ser vi ce i n a manner t hat pr ecl udes t he possi bi l i t y of f ut ur e gr oundwat er cont ami nat i on r esul t i ng f r om t hei r exi st ence. I f t he deci s i on i s made t o keep t he obser vat i on wel l f or f ut ur e sampl i ng, or f or use i n f ut ur e pumpi ng t est s, t he obser vat i on wel l s must be pr oper l y compl et ed as speci f i ed i n t hi s sect i on, or ot her USACE gui dance, such as Sect i on 33 51 39 GROUND- WATER MONI TORI NG

WELLS.

After completion of the [test well][pump well][_____], drill [one][_____] observation well(s)[, or more as directed], at least [45][_____] mm [1-3/4][_____] inches in diameter to the target water bearing stratum, [at the location(s) indicated][at a location [_____] mfeet from][at an appropriate location near] the [test well][pump well][_____]. Use the observation well[s] in conjunction with the [yield test of the test well][ and ][capacity test of the pump well]. After final acceptance of the pump well by the Contracting Officer, the observation well must be [abandoned as specified in paragraph WELL DECOMMISSIONING OR ABANDONMENT][left in place for future monitoring of the well system].

[ 1.3.4.5 Geophysical Logging

NOTE: The r equi r ement t o obt ai n bor ehol e geophysi cal sur veys i s opt i onal . Whi l e i t may not be necessar y t o r equi r e a bor ehol e geophysi cal sur vey at a s i t e wher e a gr eat deal i s known about t he subsur f ace, at anot her s i t e, wher e ver y l i t t l e, or not hi ng i s known, i t may be pr udent t o r equi r e a bor ehol e geophysi cal sur vey. When i t i s deemed necessar y t o r equi r e a bor ehol e geophysi cal sur vey, t he speci f i c t ype of sur vey shoul d be speci f i ed.

Thi s r ecommendat i on i s made by t he pr oj ect geol ogi st . The pr oj ect geol ogi st shoul d al so det er mi ne what geophysi cal l oggi ng may not be al l owed by st at e r egul at i ons, bef or e speci f y i ng t hem. See EM 1110- 1- 1802, Geophysi cal Expl or at i on.

Gui dance f or pl anni ng and conduct i ng bor ehol e geophysi cal l oggi ng may be f ound i n ASTM D5753.

Geophysically log the total depth of each test well drilled. Document geophysical logging in accordance with paragraph GEOPHYSICAL LOGS. Run [one successful natural gamma ray or gamma-gamma for the full depth, (top to bottom of test well); ][one successful neutron in the fluid filled portion of the well, (top to bottom of test well); ][one successful (top to bottom of test well) spontaneous potential (self-potential);

][and,][one successful (top to bottom of test well) resistivity log], for each test well. Log analyses and interpretations must be made by a person qualified in accordance with paragraph QUALIFICATIONS.

] 1.3.5 Qualifications

Submit personnel qualification documentation. A geologist with at least

SECTION 33 11 13 Page 12

[3][_____] years experience in soil and rock logging, and well installation, [registered in the state of [_____], ]must be on site during drilling, installation, and testing activities, and be responsible for all geophysical and borehole logging, drilling, well installation, developing and testing activities. Employ a driller licensed in the state of [_____], according to the state requirements. Geophysical logs must be interpreted by a qualified log analyst. Demonstrate the log analyst competence through background, training, and experience when so called upon. Document a minimum of [_____] years of well installation experience. [Have on staff appropriate health and safety personnel as specified in Section 01 35 29.13 HEALTH, SAFETY, AND EMERGENCY RESPONSE PROCEDURES FOR CONTAMINATED SITES, and personnel qualified to perform the necessary chemical sampling as presented in the approved Sampling and Analysis Plan.]

1.4 SUBMITTALS

NOTE: Revi ew submi t t al descr i pt i on ( SD) def i ni t i ons i n Sect i on 01 33 00 SUBMI TTAL PROCEDURES and edi t t he f ol l owi ng l i s t , and cor r espondi ng submi t t al i t ems i n t he t ext , t o r ef l ect onl y t he submi t t al s r equi r ed f or t he pr oj ect . The Gui de Speci f i cat i on t echni cal edi t or s have cl assi f i ed t hose i t ems t hat r equi r e Gover nment appr oval , due t o t hei r compl exi t y or cr i t i cal i t y, wi t h a " G. " Gener al l y, ot her submi t t al i t ems can be r evi ewed by t he Cont r act or ' s Qual i t y Cont r ol Syst em. Onl y add a “ G” t o an i t em, i f t he submi t t al i s suf f i c i ent l y i mpor t ant or compl ex i n cont ext of t he pr oj ect .

For Ar my pr oj ect s, f i l l i n t he empt y br acket s f ol l owi ng t he " G" c l assi f i cat i on, wi t h a code of up t o t hr ee char act er s t o i ndi cat e t he appr ovi ng aut hor i t y. Codes f or Ar my pr oj ect s usi ng t he Resi dent Management Syst em ( RMS) ar e: " AE" f or Ar chi t ect - Engi neer ; " DO" f or Di st r i ct Of f i ce ( Engi neer i ng Di v i s i on or ot her or gani zat i on i n t he Di st r i ct Of f i ce) ; " AO" f or Ar ea Of f i ce; " RO" f or Resi dent Of f i ce; and " PO" f or Pr oj ect Of f i ce. Codes f ol l owi ng t he " G" t ypi cal l y ar e not used f or Navy, Ai r For ce, and NASA pr oj ect s.

The " S" c l assi f i cat i on i ndi cat es submi t t al s r equi r ed as pr oof of compl i ance f or sust ai nabi l i t y Gui di ng Pr i nci pl es Val i dat i on or Thi r d Par t y Cer t i f i cat i on and as descr i bed i n Sect i on 01 33 00 SUBMI TTAL

PROCEDURES.

Choose t he f i r st br acket ed i t em f or Navy, Ai r For ce and NASA pr oj ect s, or choose t he second br acket ed i t em f or Ar my pr oj ect s.

Government approval is required for submittals with a "G" or "S" classification. Submittals not having a "G" or "S" classification are [for Contractor Quality Control approval.][for information only. When used, a code following the "G" classification identifies the office that will review the submittal for the Government.] Submit the following in

SECTION 33 11 13 Page 13 accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Installation Diagrams ; G[, [_____]] .

SD-03 Product Data

Well Material

Geophysical Logging

Cement and Bentonite Grout

Drilling Mud

Well Screens

SD-05 Design Data

Well Installation Plan ; G[, [_____]] l

SD-06 Test Reports

Water Source ; G[, [_____]] .

Filter Pack

Capacity Test

Test For Plumbness And Alignment

Water Quality Test

Sand Test

Tests

SD-07 Certificates

Site Conditions

Project Photographs

Qualifications

Casing

Air Line and Gauge

Graveling Equipment list

Construction of Filter Pack

SD-11 Closeout Submittals

Survey Maps And Notes ; G[, [_____]]

Well Development Records

SECTION 33 11 13 Page 14

Geophysical Logs

Decommissioning or Abandonment Record

PART 2 PRODUCTS

2.1 CASING

NOTE: Wel l component s do not have t o be made of t he same mat er i al s t o be compat i bl e. Wi t h t he pr oper connect or s, di f f er ent mat er i al s can be used t oget her wi t hout causi ng det r i ment al r esul t s. When usi ng di f f er ent mat er i al s t oget her , t he manuf act ur er shoul d be consul t ed.

Edi t t he submi t t al r equi r ement s based on t he t ype of wel l ( consol i dat ed or unconsol i dat ed) . I f t he speci f i cat i on i s wr i t t en f or a consol i dat ed wel l , del et e t he wel l component s whi ch ar e not nor mal l y r equi r ed i n consol i dat ed f or mat i ons, such as i nner casi ng, wel l scr een, and gr avel f i l l .

All casing, screen, and other well material must be of compatible materials to prevent galvanic reaction between components of the completed well. Submit catalog data, and name of supplier, for well screens (to include the screen slot size), casing, riser pipe, filter pack material, bentonite, cement, centralizers, surface protective covers, well vaults, locking caps, airline oil filters for pneumatic drilling, dedicated sampling equipment, pumps, and chemical specifications on drill lubricants, tracers, disinfecting agents, and drill fluid additives, if used. Catalog data must include any information, supplied by the manufacturers or suppliers of the above listed items.

2.1.1 Steel Casing and Couplings

Steel casing must be new [carbon steel, conforming to ASTM A139/A139M Grade B][standard weight [galvanized ][black ]steel pipe, conforming to ASTM A53/A53M][steel pipe conforming to AWWA C200][[type 304][ or ][type 316] stainless steel] and nominal [_____] mminch diameter, [_____] mminch wall thickness [schedule 5S meeting the requirements of ASTM A312/A312M ], as applicable. Joints must be either threaded and coupled, or field welded in accordance with AWWA C206. [Provide casings with [drive shoes][_____].]

2.1.2 Plastic Casing and Couplings

NOTE: ASTM F480 cover s sever al di f f er ent t ypes of pi pe mat er i al s and coupl i ng conf i gur at i ons. I f any of t hese mat er i al s or coupl i ngs ar e t o be pr ohi bi t ed, t hi s par agr aph shoul d c l ear l y poi nt out whi ch ar e or ar e not al l owed.

Plastic casing pipe and couplings must be schedule [80][___], threaded flush joint[ or other joint type as approved by the Contracting Officer

SECTION 33 11 13 Page 15

]and conform to ASTM F480 and ASTM D1785.

2.2 WELL SCREENS

NOTE: Wel l scr eens wi l l be speci f i ed when t he devel oped wel l r equi r es assur ance of r el at i vel y f r ee ent r y of wat er i nt o t he casi ng at l ow vel oci t y, when sur r oundi ng sand f r om t he unconsol i dat ed f or mat i on must be pr event ed f r om ent er i ng t he i nt ake, or when a st r uct ur al r et ai ner i s r equi r ed t o suppor t t he bor ehol e i n t he unconsol i dat ed mat er i al . Type of scr een and casi ng wi l l be desi gner ' s opt i on and nonappl i cabl e t ype of scr een wi l l be del et ed. Met al scr eens and casi ngs wi l l be speci f i ed when st r engt h of scr een and casi ng must be gr eat er t han t hat pr ovi ded by pl ast i c or when maxi mum open ar ea f or t he scr een di amet er i s r equi r ed. Pl ast i c scr eens and casi ng may be speci f i ed when wat er qual i t y i s such t hat scr een sel ect i on r equi r es cor r osi ve- r esi st ant mat er i al s, or when economy i s of pr i me i mpor t ance. Bl anks i n t he wel l scr een may be appr opr i at e i f mor e t han one wat er bear i ng zone i s encount er ed i n an aqui f er , or when i t i s necessar y t o pl ace a cent er i ng devi ce ( cent r al i zer ) i n t he scr eened ar ea. However , scr eeni ng mor e t han one aqui f er i n t he same wel l shoul d be avoi ded whenever possi bl e due t o t he possi bi l i t y of cross-contamination.

a. Well Screens must be a minimum of [100][_____] mm [4][_____] inches nominal diameter, and must be directly connected to the bottom of the inner casing by an approved method. The length of the screen must be sufficient to provide an intake area capable of passing not less than the minimum required yield of the well, at an entrance velocity not exceeding 30.5 mm/s 0.1 fps .

b. The opening, or slot size of the screen, must be [[_____] mminch ][determined by the Contractor ][designed based on analysis of the distribution of the grain size of the[ aquifer materials encountered during drilling][ artificial filter pack]], be compatible with the material surrounding the screen. Submit as part of the well installation plan.

c. The well screen must be of sufficient size and design to hold back and support the [gravel used in the filter pack envelope][ and ][in-situ material surrounding the screen].

d. Use screen and all accessories required for satisfactory operation that are standard products of manufacturers regularly engaged in the production of such equipment. Field constructed screen is not acceptable.

e. "Blanks" in the well screen may be utilized in nonproductive zones, or where centering devices are needed in the screened area, and area considered "casing."

f. Seal the bottom section, below the screen, watertight by means of a

SECTION 33 11 13 Page 16

[flush threaded][welded] end cap of the same material as the well screen.

2.2.1 Metal Screen

Metal screen must be an approved wire-wound type of [type 304 ][or][ type 316 ]stainless steel, conforming to the applicable requirements of AWWA A100. A wire-wound screen manufactured with supporting bars or core of material different from the wire will not be acceptable. Make joints of threaded couplings of the same material as the screens or by brazing or welding in accordance with AWWA C206.

2.2.2 Plastic Screen

2.2.2.1 Plastic Pipe

Plastic pipe, and screen material must conform to ASTM F480. All PVC plastic pipe must conform to ASTM D1785.

2.2.2.2 Bonding Materials

NOTE: When sampl i ng f or t r ace l evel cont ami nant s i n a wel l , t he use of any sol vent s t o j oi n casi ng shoul d not be al l owed.

Bonding materials, proportions and preparation of adhesives, the method of application, and the procedure used for making and curing the connections must conform to the recommendations of the plastic pipe manufacturer and ASTM F480. The pot life, initial setting time and external heating requirements for curing of the adhesive must be suitable for the procedure and climatic and other conditions and must be varied as required to suit changes in climatic and other conditions. Use a system for making joints at the well site that provides a curing period adequate to develop the ultimate strength of the completed joint. Self-tapping screws or other devices for holding adhesive-coated pipe in the couplings during the setting period [may][must not] be utilized. Do not stress newly-made joints in the casing, lower into the well, or submerge in water prior to complete curing of the adhesive.

2.2.2.3 Plastic Well Screen

Provide plastic well screen with perforations consisting of either machine-sawed slots, continuous wrap or wound, or drilled, formed, or molded openings, and have smooth, sharp-edged openings free of burns, chipped edges, or broken pieces on the interior and exterior surfaces of the pipe. The pattern of the openings must be uniformly spaced around the periphery of the well screen. Design and submit compatible slot sizes of screens and [filter-pack gradations][surrounding material] to the Contracting Officer[, with a representative sample of materials in which the screen is to be placed]. The plastic pipe screen strength properties must be equivalent to those for the plastic casing with which the screen is used. Plastic well screen is to be ASTM D1784 compliant.

2.3 FILTER PACK

NOTE: The use of ar t i f i c i al f i l t er - pack

SECTION 33 11 13 Page 17 const r uct i on i s r ecommended i n f or mat i ons wher e t he scr een sl ot openi ng, sel ect ed on t he basi s of a nat ur al l y devel oped wel l , i s smal l er t han 0. 25 mm

0. 010 i nch ( No. 10 sl ot ) . Ar t i f i c i al f i l t er - pack mat er i al shoul d al so be speci f i ed when f i ne uni f or m mat er i al , or ext ensi vel y l ami nat ed, non- homogenous f or mat i ons ar e encount er ed. Gui dance f or desi gni ng and sel ect i ng t he scr een sl ot s i ze, and f i l t er pack gr adat i on may be f ound i n EPA' s " Handbook of Suggest ed Pr act i ces f or t he Desi gn and I nst al l at i on of Gr ound- Wat er Moni t or i ng Wel l s" , ( EPA document number 160014- 891034) ; or " Gr oundwat er and Wel l s" , by Fl et cher G. Dr i scol l , publ i shed by Johnson Wel l Scr eens, 1986.

I f t he wel l i s not a f i l t er pack t ype, t hi s par agr aph shoul d be del et ed i n i t s ent i r et y, al ong wi t h ot her r ef er ences t o f i l t er pack wel l s t hr oughout t he speci f i cat i on. When r equi r i ng st er i l i zat i on, t he st r engt h of t he st er i l i z i ng agent shoul d be st at ed, and how much i s r equi r ed per cubi c yar d of f i l t er pack.

Provide filter pack material that is a product of a commercial sand and gravel supplier, sized and graded for the surrounding soil encountered, and composed of clean, round, hard, waterborne siliceous material, free of flat or elongated pieces, organic matter, or other foreign matter. Submit filter pack material test results; sieve and chemical analyses, within [5][_____] working days after completion of the test well. Size the filter material which will allow the maximum flow of water into the well and prevent the infiltration of sand and silt. The gradation of the filter material must have a uniformity coefficient of not more than 2.5.

The filter material must be [thoroughly sterilized with chlorine or hypochlorite immediately before being placed][placed as directed].

Manufactured glass beads made of soda lime glass, SiLi beads, or similar products designed for use in potable water wells may be used as filter pack in lieu of natural quartz sand.

2.4 BENTONITE SEAL

NOTE: Bef or e i nst al l i ng an annul ar seal , t he st at e r egul at or y agency shoul d be consul t ed. The st at e, or l ocal muni ci pal i t y, wher e t he wel l i s bei ng i nst al l ed, may have speci f i c r equi r ement s f or sani t ar y, and/ or wel l head pr ot ect i on.

Provide bentonite seal, intended to keep grout from entering the filter pack, consisting of hydrated granular, or pelletized, sodium montmorillonite furnished in sacks or buckets from a commercial source, and free of impurities which adversely impact the water quality. If the bentonite seal is located above any borehole fluid levels, place a layer of fine sand at the top of the bentonite seal, to provide an additional barrier to any downward migration of grout.

SECTION 33 11 13 Page 18

2.5 CEMENT AND BENTONITE GROUT

2.5.1 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 6 gallons of water per 42.6 kg 94 lb 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.

2.5.2 Bentonite Grout

Make high-solids bentonite grout from sodium bentonite powder, granules, or a combination of the two. Mix water from an approved source with these powders or granules to form a thick bentonite slurry. The slurry must consist of a mixture of bentonite and the manufacturer's recommended volume of water to achieve an optimal seal. The slurry must contain at least 20 percent solids by weight and have a density of 4.3 kg/L 9.4 lb/gallon of water or greater.

2.6 PERMANENT PUMP

NOTE: The pump and mot or di amet er shoul d be at least 25 mm1 i nch smal l er t han t he i nsi de di amet er of t he wel l scr een or casi ng, whi chever i s smal l er , i n or der t o al l ow i t t o be r emoved f or ser vi c i ng af t er bui l dup of scal e on t he out si de of t he pump and i nsi de of t he wel l scr een and casi ng. A per manent pump shoul d not be speci f i ed unt i l i t i s known how much t he wel l wi l l pr oduce. The i nst al l at i on of t he per manent pump may need t o be i n a separ at e sect i on, ( r ef er t o Sect i on 23 21 23

HYDRONI C PUMPS) .

Permanent pump must be an approved [submersible ][jet ][or ][_____]type with a capacity sufficient to deliver [_____] L/s gpm. Connect the pump to the pump controls by a three-wire drop line. Provide [polyethylene plastic pipe conforming to ASTM D2239][galvanized steel pipe conforming to ASTM A53/A53M] piping for the well drop line. Operate the pump on [208][_____] volts, 60 Hz,[3][single]-phase power, with the motor of sufficient size to operate the pump under the maximum operating conditions without exceeding its rating. Equip the pump with necessary controls to provide for automatic operation of the pump. The pump and motor unit must be no larger than [_____] mminches in diameter at any point.

2.7 CONTAINERS FOR DRILL CUTTINGS AND CORED ROCK SAMPLES

2.7.1 Containers for Drill Cuttings

Drill cuttings and driven samples required for geotechnical purposes are to be sealed in air-tight liter pint size [plastic][glass] containers.

Place individual sample containers in partitioned [cardboard][_____] boxes.

SECTION 33 11 13 Page 19

2.7.2 Labelling 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.

2.7.3 Packaging of Cored Rock Samples

Place cored rock samples in [wooden][_____] core boxes as indicated.

Place spacers in the proper positions in the core boxes to show the location and actual extent of voids and core losses as clearly as possible. Make the spacers of [wood][_____] [or some other relatively light material] which is of sufficient strength to withstand jarring and crushing in handling. Spacers must be of a strongly contrasting color pattern so that core losses will be accented either by direct observation or in photographs. In the smaller sizes, up to and including 150 mm6 inches , provide spacers the same width as the cores. Place the core in the core box starting at the left hand corner on the hinge side and running to the right. Place successive cores down the hole in successive troughs, starting from the back and working toward the front of the box so that the core can be read in the same manner as a printed page, from left to right, when standing in front of the open box.

2.7.4 Labeling of Cored Rock Sample Containers

Label the outside and the inside of the core box lid with the project name, hole number, date sampled, location, surface elevation, core box number, and interval of depth of core. The information on the label must be such that it can clearly be read in photographs of the core box. Also, label both ends of the core box with the hole number and box number.

PART 3 EXECUTION

3.1 PREPARATION

3.1.1 Protection of Existing Conditions

Maintain existing survey monuments and wells, and protect them from damage from equipment and vehicular traffic. Repair any items damaged during this work. Reinstall wells requiring replacement due to Contractor negligence according to these specifications. Protect wells scheduled for abandonment from damage so that abandonment may be performed according to these specifications. Prior to commencement of drilling, obtain written approval from the local utility companies to drill at each site, to avoid disturbing buried utilities.

[ 3.1.2 Decontamination

NOTE: I t may not be necessar y t o decont ami nat e t he dr i l l i ng equi pment but t he desi gner shoul d consi der whet her i t i s pr udent t o r equi r e t hat t he equi pment be decont ami nat ed bef or e use si nce t hi s wel l wi l l be used f or pot abl e wat er . Del et e t hi s par agr aph i f i t i s not appl i cabl e f or t hi s pr oj ect .

Clean the drill rig, drill rods, drill bits, augers, temporary casing, SECTION 33 11 13 Page 20 well developing equipment, tremie pipes, grout pumping lines, and other associated equipment with high-pressure hot water/steam prior to drilling at each well location. Decontaminate in accordance with ASTM D5088 or ASTM D5608. Decontaminate at a central decontamination station in an area that is remote from, and cross- or down-gradient from the well being drilled. Clean screen and well casing with high-pressure hot water immediately prior to installation in the well. The use of factory sealed (plastic wrapped) screen and well casing does not waive this requirement for pre-installation cleaning. Decontaminate samplers in accordance with the Sampling and Analysis Plan. Use water for cleaning from a Government approved source. Sample and test the water source used for cleaning for the constituents specified in the Sampling and Analysis Plan prior to use at the site.

3.1.3 Water Source

NOTE: Del et e t hi s par agr aph i f not appl i cabl e f or t he pr oj ect .

Submit decontamination and drilling water source analytical test results obtained from the Sampling and Analysis Plan, within [_____] working days before beginning drilling operations. The Contractor is responsible for locating the source, obtaining the water from the source, transporting it to, and storing it at the site.

] 3.2 DRILLING, CONSTRUCTION AND TESTING

3.2.1 Well Drilling and Construction

NOTE: The geol ogi st must be awar e of t he appr oxi mat e dept h of wel l and l engt h of scr een r equi r ed t o pr ovi de suf f i c i ent wat er t o f ul f i l l pr oj ect r equi r ement s and t he qual i t y of wat er t o be expect ed at t hat dept h. ( The Post , or Resi dent Engi neer s of f i ce, or l ocal USGS of f i ce i s a good sour ce f or t hi s i nf or mat i on. ) Thi s knowl edge i s necessar y t o est i mat e wel l dr i l l i ng cost s and t o det er mi ne what t ype of t r eat ment i s r equi r ed t o make t he wat er usabl e. Any such si t e- speci f i c condi t i ons or cr i t er i a f or i ndi v i dual pr oj ect s shoul d be i ncl uded i n t hi s par agr aph. The geol ogi st must ensur e t hat wel l desi gn meet s or exceeds Feder al , st at e, and l ocal i nst al l at i on r equi r ement s.

Gui dance on wat er wel l const r uct i on may be f ound i n Envi r onment al Pr ot ect i on Agency ( EPA) Manual of Wat er Wel l Const r uct i on Pr act i ces ( 570/ 9- 75/ 001) .

Locate the well [as indicated][where directed], and construct in accordance with these specifications. Install each well to prevent aquifer contamination by the drilling operation and equipment, intra- and inter-aquifer contamination, and vertical seepage of surface water adjacent to the well into the subsurface, especially the well intake zone.

If a well of the required capacity is not constructed, or if the well is abandoned because of loss of tools, or for any other cause, abandon the

SECTION 33 11 13 Page 21 hole as specified in paragraph WELL DECOMMISSIONING OR ABANDONMENT.

3.2.1.1 General

NOTE: Del et e pr ohi bi t i on agai nst or gani c dr i l l i ng f l ui d, and gr ease, oi l , and f uel l eaks on equi pment i f not i nst al l i ng wel l s at an HTRW si t e, or i f not appl i cabl e f or t he pr oj ect .

a. Use the drilling method approved by the Contracting Officer and in conformance with all state and local standards for water well construction. Execute the work under the direct supervision of an experienced well driller. The drilling method must prevent the collapse of formation material against the well screen and casing during installation of the well.

b. The inside diameter of any temporary casing used must be sufficient to allow accurate placement of the screen, riser, centralizer(s), filter pack, seal and grout. [Any drilling fluid additive used must be inorganic in nature, but phosphate free. Grease or oil on drill rods, casing, or auger joints is not permitted; however, PTFE tape or vegetable oil (in solid phase form) are acceptable. The drill rig must be free from leaks of fuel, hydraulic fluid, and oil which could contaminate the borehole, ground surface or drill tools.]

c. Use casing pipe, well screens, and joint couplings of compatible materials throughout each well.

d. The well must be a [filter pack well][naturally developed well] activated in the [overburden][water-bearing stratum][stratum based on test well data].

e. Drill the well straight, plumb, and circular from top to bottom.

Initially drill the well from the ground surface to the [uppermost level of the water bearing strata][top of rock][_____] and the bottom of the outer casing set at this elevation. The hole below the outer casing must penetrate the water bearing stratum a sufficient depth to produce the required amount of water without causing excessive velocities through the aquifer.

f. During construction of the wells, use precautions to prevent tampering with the well or entrance of foreign material. Prevent runoff from entering the well during construction.

g. If there is an interruption in work, such as overnight shutdown or inclement weather, close the well opening with a watertight uncontaminated cover. Secure the cover in place or weigh down so that it cannot be removed except with the aid of the drilling equipment or through the use of drill tools.

3.2.1.2 Setting Outer Casing

NOTE: Ther e i s a pr ovi s i on f or t empor ar y casi ng, as ext r act i on and/ or i nj ect i on wel l s may not r equi r e a per manent out er casi ng.

SECTION 33 11 13 Page 22

The outer casing must not be less than [200][_____] mm [8][_____] inches in diameter. The hole must be of sufficient size to leave a concentric annular space of not less than [65][_____] mm [2-1/2][_____]inches and not more than [150][_____] mm [6][_____]inches between the outside of the outer casing and the walls of the hole. Fill the annular space between the outer casing and the walls of the holes with cement grout.