s_Wastewater_System_ADEC_Permit_Package_3.1.17.pdf

United States Department of Agriculture Forest Service

ADEC PERMIT PACKAGE

MAYBESO-HOLLIS WASTEWATER SYSTEM DESIGN

Hollis, AK

Contract No.: AG-04H1-C-15-004 Task Order No.: AG-0116-D-16-0011

Final

March 1, 2017

Prepared By:

AKS P.S., Inc.

1011 SW Klickitat Way, Suite 102 Seattle, WA 98134

AECOM Technical Services, Inc.

700 “G” Street, Suite 500 Anchorage, AK 99501

Engineering Support and Plan Review (ESPR) Engineering Plan Intake Form

Use of this form is mandatory for submittal of an engineering plan to ESPR for review.

Items in bold are required. Submittal instructions are on the following page.

Project Name:

How you will refer to this project Property Legal Description:

Subdivision Lot Block - OR - Survey and Tract - OR - Township, Range, Section, Meridian, and Tax Lot Property Street Address:

Street Address, City, State, Zip Code Wastewater System Location Coordinates:

Latitude in decimals of a degree DATUM (select one) Longitude in decimals of a degree Community system is installed (select one):

Or nearest community Owner’s Name:

First and Last name Owner’s Telephone:

Owner’s Address:

Street Address, City, State, Zip Code If same as above, enter Same Owner’s e-mail Address:

Submitting Design Engineer’s Name:

First and Last name Submitting Design Engineer’s Telephone:

Submitting Design Engineer’s Firm:

Submitting Design Engineer’s e-mail Address:

Project Type (select one):

Discharge Type (select one):

Wastewater Type (select one):

Design Flow in Gallons Per Day OR If a Sewer Line Extension/Replacement the Length in Feet:

Water System Designation (select one):

If applicant is seeking general permit coverage for this discharge, enter the permit number here:

CONTACT INFORMATION

ESPR will communicate primarily with the below identified Project Manager and copy the identified owner of the project on all correspondence. E-mail is the primary means of communication. The Project Manager will serve as the focal point for information requests. The Project Manager may be the same as the Design Engineer, and if no project manager information is provided, the submitting Design Engineer will be the default Project Manager.

Engineer Responsible for Construction Oversight and Record Drawing Submittal:

enter “Same as Design Engineer” OR Name, Telephone, Company Name, Address and e-mail Project Manager enter “Same as Design Engineer” OR “Same as Engineer Responsible for Construction Oversight and Record Drawings” OR Name, Telephone, Company Name, Address and e-mail

Form Revised 10/2016

General Instructions:

• Plans must be sealed, signed and dated by a professional engineer licensed by the State of Alaska

• Plans submitted in hardcopy must be submitted on 11 by 17 inch or 8.5 by 11 inch paper, whichever is most legible

• Plans submitted electronically must comply with electronic submittal guidance available at:

o http://dec.alaska.gov/water/wwdp/onsite/ww_planreview-cklist.htm

• Plans are reviewed within 30 days of receipt of a complete plan submittal

• Plans should be submitted to the ESPR regional office having jurisdiction of the project location, available at:

o http://dec.alaska.gov/water/wwdp/onsite/areaOffices.html

• NOTE: Engineering plan checklists are for reference only and shall not be included with the submittal

Domestic Wastewater Engineering Plan Submittal:

1. The following forms/documents are required for domestic wastewater engineering plan submittal, arranged in the following order:

• This completed form

• A Plan Review Invoice with payment (see invoice for instructions)

• A completed Owner’s Statement form

• Engineering plans sealed in accordance with 12 AAC 36.185-36.245 o Cover letter and/or engineers report describing project, sealed o Other supporting documents o Performance Certification as needed (for Private Residential Marine Outfalls only)

2. Upon successful review of the submittal ESPR will issue to the Project Manager and Owner:

• An Approval to Construct Letter

• A Construction and Operation Certificate with the Approval to Construct section signed

3. The system is constructed.

• Major design changes require prior written approval and issuance of a Change Order

• Interim Approval to Operate is granted to domestic wastewater systems automatically along with the Approval to Construct for

90 days after system construction

4. The Project Manager requests Final Approval to Operate once the system is constructed and operational

• Final Approval to Operate is the Owner’s only document that demonstrates the wastewater system has been properly documented and should be stored with the facility’s important papers like O&M manuals, permits and surveys

• Project Manager submits a completed Certification of Construction form o The Owner must sign the form o The Contractor or person who conducted the installation work under supervision must sign the form o The Certifying Engineer must sign the form

• Additional documents which were specified, if any, in the Approval to Construct must be included

• If modifications of the submitted design were made, record documents accurately depicting the installed system must be submitted bearing the seal of the Certifying Engineer

5. ESPR will issue an Approval to Operate once all documents are received

• ESPR may issue conditions on the Approval to Operate such as maintenance requirements, sampling or renewal time limits

• Unless otherwise conditioned, an Approval to Operate is valid indefinitely

• Modification of the system without prior approval of ESPR invalidates the Approval to Operate

Non-domestic Wastewater Engineering Plan Review:

This intake form is required for non-domestic engineering plan submittal. The Approval to Construct and Approval to Operate two-step process is not applicable for non-domestic plan review. The engineering plan requirements for non-domestic engineering plans is different from the above domestic requirements. For non-domestic engineering plan requirements, see 18 AAC 72.600(c).

NOTE : If printing the form, the Submittal Instruction Page is not required to be printed or submitted.

Submittal Instructions NOTE : If printing the form, the Submittal Instruction Page is not required to be printed or submitted.

http://dec.alaska.gov/water/wwdp/onsite/ww_planreview-cklist.htm http://dec.alaska.gov/water/wwdp/onsite/areaOffices.html

Revised December 2016

Invoice Date: (MM/DD/YY)

Invoice Number (DEC use):

Plan Tracker #, CI #, or other (DEC use):

IMPORTANT:

1. Please reference ESPR in memo field of check

2. Please make checks payable to "State of Alaska"

WQ29

WQ27

WQ27

WQ27

WQ28

WQ32

WQ40

WQ41

WQ42

WQ43

WQ44

WQ45

WQ60

WQ61

DEC Contact (printed): Phone: Date Paid:

Amount Paid: Cash Credit Card (MC/Discover/Visa)

* unless otherwise specified and substantiated by the design engineer in their submittal, the Department uses 150 gpd per bedroom as the design flow value.

** some of the fee increases are significant, so the Division is phasing-in fee increases of more than 50% of the current fee over a three-year period

$385

Hourly fee by 18 AAC 72.959

$3,320

$530

$790

Check #

48730: Line extension/replacements (Including Storm Drain collection) for each additional 1,000 ft or fraction thereof.

48738: Non-Domestic WW Plan Review Does not include stormwater runoff

Total Due:

$295

$465

$240 Hourly fee by 18 AAC 72.959

$295

$625

$315

$295

$785

$115

$1,535

$2,560$1,800

$115

$25

$405

$540

$1,095

$115

$25

$655

$1,040

$1,970

$25

49119: Registration fee per Documentation of Construction form 48732: Searching, retrieving, and copying the document or record of a wastewater disposal system filed by property legal description 49111: Domestic WW Plan Review (A) Based on peak design flow of: 0 - 1,500 gpd (0-10 bedrooms*) 49113: Domestic WW Plan Review (B) Based on peak design flow of: 1,501 - 2,500 gpd (11-16 bedrooms*) 49114: Domestic WW Plan Review (C) Based on peak design flow of: 2,501- 15,000gpd 49115: Domestic WW Plan Review (D) Based on peak design flow of: 15,001- 50,000gpd 49116: Domestic WW Plan Review (E) Based on peak design flow of: 50,001 and over 49127: Waiver/Modification of Provisions under 18AAC72.060 per prescribed standard: NOTE: Not applicable for engineering plans submitted for review.

48731: Line extension/replacements (Including Storm Drain collection) up to 1,000 ft

48727: Certified Installer - Certification fee (2 annual installments)

$120 $100 $850 $460

On or AfterBetween Between

$200 $100 $850 $460

$275 $100 $850 $460

Legal Description or Facility Name:

48729: Homeowner Training 48727: Certified Installer/Contractor Training 48727: Certified Installer - Certification fee (2 years)

Name:

Phone:

Email:

QTY Amt Due

Billing Information (who's paying?)

STATE OF ALASKA

Department of Environmental Conservation

Wastewater Invoice

EIN: 926001185

Inv Code

Fee Amount**

ADEC Project ID: Description 1/1/1910/22/16 1/1/18

12/31/1812/31/17

Address:

WQ38

Peter Crews 700 G Street Suite 500 Anchorage, AK 99501

(907) 261-9710 peter.crews@aecom.com

02/22/17

TRACT 4B A.S.L.S. 96-31

1 $ 1,095.00

$ 1,095.00

$ 1,095.00 ✔

State of Alaska

Department of Environmental Conservation

PUBLIC DRINKING WATER SYSTEM

OR

DOMESTIC WASTEWATER SYSTEM

OWNER’S STATEMENT

Department Completion Only

Project No.

Date Received:

This information is required by 18 AAC 15.030.

Please type or print all non-signature items in ink:

Project Name: ___________________________________________________________________

I submit the enclosed items concerning the above referenced proposed project for review. By my signature, I certify that the project is (check one):

privately owned and that I am the owner.

owned by a sole proprietorship and that I am the proprietor.

owned by a partnership of which I am a general partner.

owned by a corporation of which I am a principal executive officer of at least the level of vice-president, or a duly authorized representative responsible for the overall management of this project.

owned by a municipal, state, federal, or other public agency of which I am a principal executive officer, ranking elected official, or other duly authorized employee.

Signature (please sign in ink) Date

Name and Official Title

Company or Agency (if applicable)

18. AAC 15.030. SIGNING OF APPLICATIONS: All permit or approval applications must be signed as follows:

(1) in the case of corporations, by the principal executive officer of a t least the level of vice-president or his duly authorized representative, if the representative is responsible for the overall management of the project or operation;

(2) in the case of a partnership, by a general partner;

(3) in the case of a sole proprietorship, by the proprietor; and

(4) in the case of municipal, state, federal, or other public facility, by either a principal executive officer, ranking elected official, or other duly authorized employee. (Eff. 11/25/77, Register 64)

Authority: AS 46.03.020(10), AS 46.03.090, AS 46.03.100, AS 46.03.110, AS 46.03.160. AS 46.03.330, AS 46.03.720 peter.crews Typewriter Maybeso-Hollis Wastewater Project peter.crews Typewriter x peter.crews Text Box

US FOREST SERVICE PNW

AECOM

700 "G" Street, Suite 500 Anchorage, AK 99501 907-562-3366

CONTRACT NO.: AG-04H1-C-15-004

TASK ORDER NO.: AG-0116-D-16-0011

Anchorage, AK 99501 907-562-3366

Anchorage, AK 99501

EXISTING PLAN

Anchorage, AK 99501

WASTEWATER TREATMENT PLANT DECOMMISSIONING PLAN

Anchorage, AK 99501

SITE PLAN

Anchorage, AK 99501

TANK LAYOUT PLAN

Anchorage, AK 99501

GRADING PLAN GRADING PLAN AT OUTFALL MANHOLE

Anchorage, AK 99501 907-562-3366

UNTREATED SANITARY SEWER LINE PROFILE VIEW

UNTREATED SANITARY SEWER LINE PLAN VIEW

Anchorage, AK 99501 907-562-3366

TREATED SANITARY SEWER LINE PROFILE VIEW

TREATED SANITARY SEWER LINE PLAN VIEW

Anchorage, AK 99501 907-562-3366

CROSS SECTION AT DISTRIBUTION BOX

CROSS SECTION AT DRAINAGE SWALE

CROSS SECTION AT ECOFLO UNITS

Anchorage, AK 99501 907-562-3366

MANHOLE DETAILS

DISTRIBUTION BOX PLAN

SEPTIC TANK DETAILSTRENCH DETAILS

Anchorage, AK 99501 907-562-3366

PLAN VIEW AT MARINE OUTFALLSECTION VIEW UV DISINFECTION UNIT

NTSNTS

CONCRETE DETAILS

NTS

SECTION VIEW MARINE OUTFALL TIE-IN

NTS

VENT PIPE DETAILS

NTS

CLEANOUT DETAILS

NTS

ELECTRICAL PLAN VIEW

ELECTRICAL DETAILS

NTS

TRENCH DETAILS

NTS

AECOM Technical Services, Inc.

700 G Street, Suite 500

Anchorage, AK 99501 Phone: 907.562.3366

Fax: 907.562.1297

Date: 2/22/17 To: Rob Kimble, Juneau ADEC From: Peter Crews, AECOM

RE: Engineering Support and Plan Review – Maybeso Hollis Wastewater Project

Rob, We’re submitting this plan review for the Maybeso Hollis Wastewater project on behalf of the owner, the U.S. Forest Service. You may recall conversations and email correspondence regarding this project. John Chapman stopped by your office several months ago. John and I have talked on the phone and emailed you regarding the project.

This is a unique project. A geotechnical investigation determined the soils are too tight for a conventional on-site system. For this project we selected a bio-filtration system supplemented by UV treatment of effluent prior to discharge into Kassan Bay. The system was designed to be a passive treatment system with gravity flow in order to facilitate easy operation and maintenance. The system should not require a certified operator to maintain.

The wastewater facility will serve a small community that includes the Hollis School (Southeast Island School District) and US Forest Service lab facility. The USFS and Southeast Island School District have a finalized a letter of agreement which designates the USFS as the party responsible for maintenance of the wastewater system. I requested final USFS signatures for the Letter of Intent (School-USFS agreement), and the Owner’s statement. Once these signatures are obtained I will forward ASAP.

Included in the submittals is a design summary report that will hopefully answer most of your questions. Please don’t hesitate to call me at 907-261-9710 if you have questions or need more information.

Sincerely, Peter Crews, PE Project Manager & Designer (907)-261-9710

Summary of Reasoning for Selected Design March 1, 2017

Maybeso-Hollis Wastewater System Design 1

TABLE OF CONTENTS

Table of Contents

1.0 Introduction

1.1 Purpose & Scope

2.0 Existing System Decommission

2.1 Summary

3.0 New System

3.1 Selected Alternative

3.2 Unselected Alternatives

Maybeso-Hollis Wastewater System Design 2

1.0 INTRODUCTION

1.1 Purpose & Scope

The purpose of Maybeso-Hollis wastewater system design is to replace the existing wastewater treatment system with an on-site system. The existing system was installed to support the U.S Forest Service (USFS) Maybeso Research Center and the neighboring Hollis School. The USFS facility includes a 12-person bunkhouse, a one bedroom cabin, and a lab. In addition a one bedroom cabin immediately east of the bunkhouse is also on the wastewater system. The school currently serves 20 students. Also on the school property is a five bedroom duplex, two one-bedroom cabins, and a community library. The existing wastewater treatment plant (WTP) processes sewage from all of these buildings.

The goal of this design study was to explore possible options for an on-site system and develop a final design for the chosen option. Systems investigated included:

· Leach fields

· Soil mounds

· Peat mound

Leach fields and soil mounds were determined unfeasible do to impermeable soils. The final recommended option for development to final design is a peat system.

2.0 EXISTING SYSTEM DECOMMISSION

2.1 Summary

The existing WTP consists of a three chamber aeration system. The concrete vaults are covered with steel grating. A small wood frame shelter encloses the vaults. The aeration pump turns on and off intermittently throughout the day.

Decommissioning.

Electrical power is supplied by Alaska Power and Telephone (AP&T) from a service pole on the west side of the WTP shelter. Decommissioning the power will require disconnection of the power at the service meter located on the nearby service pole. After the service conductors have been disconnected, the existing pump motors and associated electrical controls will be removed along with the interconnecting wiring, conduits and lighting inside the WTP building. Next, the vaults will be flushed (power washed) with soap and water and filled with gravel. Finally, the shelter structure, piping, and steel grating will be removed and disposed.

3.0 NEW SYSTEM

3.1 Selected Alternative

The selected alternative for this project is a packaged bio-filtration system. Pioneering efforts in peat mound filtration systems were developed between 1980 and 2000. Peat mound systems utilize Sphagnum peat to effectively reduce biological oxygen demand (BOD) and fecal coliform bacteria levels (Riznyk 1992). A conventional peat mound system is similar to a soil mound system, consisting of a mound of peat placed over the existing ground and capped with soil. Bacteria and micro-organisms populate the peat environment and effectively digest fecal coliform bacteria and reduce BOD.

Since 2000 the use of packaged bio-filtration units has become wide spread. Packaged bio-filtration systems utilize both sphagnum peat and ground coconut husks as a filter medium. A packaged bio-filtration system was selected for this project over a conventional peat mound system for several reasons:

· Treated wastewater from a conventional peat mound system would not infiltrate and would require collection; a sophisticated collection system would need to be installed to collect wastewater and discharge to a single effluent pipe;

· Construction of a conventional peat mound system is subject to errors which could easily lead to system failure;

Maybeso-Hollis Wastewater System Design 3

· A packaged bio-filtration system reduces the risk of system failure;

· Purchase of filtration materials, geosynthetic fabrics, filter rock, and collection piping for a conventional mound system would be a significant expenditure;

· The bio-filtration units are provided with the filter material already installed, resulting in a significant savings in labor;

· The bio-filtration units can be inspected periodically and maintained, a conventional peat mound system cannot;

· Replacement of the filtration material is required every 10 to 15 years for either a peat mound system or a packaged peat/coconut material bio-filtration unit; replacement of a peat mound system would be an expensive project; complete replacement of filtration material in the bio-filtration units is estimated to take only one day per unit.

In summary, a conventional peat mound system would not result is significant cost savings but would increase the risk of system failure. A conventional peat mound system could not be easily maintained.

Image 1: Ecoflo Bio Filter

The selected bio-filtration system for this project is the Ecoflo STB 730 Coco Filter manufactured by Premier Tech. Premier Tech has been at the forefront of the development of packaged bio-filtration units for the last 20 years, with close to 100,000 units installed. The Ecoflo STB 730 utilizes ground coconut husks for a filtering medium. Similar to a peat system, bacteria and micro-organisms populate the ground coconut material and effectively digest fecal coliform bacteria and reduce BOD. The unit is rated to handle 730 gallons per day.

The effluent from the EcoFlo STB730 units exceed secondary treatment parameters as defined the by the State of Alaska Department of Environmental Conservation (ADEC).

Table 1 ADEC Secondary Treatment Parameters:

Secondary Treatment Parameters

Parameter

ADEC

Maximum mg/L

Ecoflo Specifications mg/L

BOD/Per Day Avg. 30* <10**

*30 Consecutive Days Average;** Annual Average

Total Suspended Solids/Per Day Avg. 30* <10**

*30 Consecutive Days Average;** Annual Average pH Level 6.0 to 9.0 6.9 to 7.3

Note: ADEC Parameters per 18 AAC72.900 (59)

Maybeso-Hollis Wastewater System Design 4

The effluent from the Ecoflo STB730 units will also meet parameters as defined by ADEC for discharge into marine waters:

Table 2 ADEC Water Quality Standards for Marine Discharge:

ADEC Marine Discharge Parameters

Parameter ADEC Maximum mg/L

Ecoflo Specifications mg/L

BOD/Monthly Avg. 30 <10

Total Suspended Solids/Monthly Avg. 30 <10 pH Level 6.5 to 8.5 6.9-7.3

Fecal Coliform Bacteria/Monthly Avg. 14 <14 Achieved with UV Unit

Total Residual Chlorine 0.013 0 Chlorine not used

System Components. The proposed wastewater treatment system will be composed of two-compartment septic tanks, a distribution box, four Ecoflo STB-730 bio-filtration units, an ultraviolet (UV) disinfection unit, and a marine discharge pipe. The septic tanks will provide primary treatment, separating solids. For this project HDPE septic tanks were selected vs. concrete tanks due to weight and the high cost of shipping. The HDPE tanks are supplied with PVC Tee’s that house filter units. The filtered effluent will be distributed by a distribution box to the individual Ecoflo bio-filtration units. Treated effluent from the Ecoflo units will be collected and discharged to the existing marine outfall pipe located near the existing

WTP.

Disinfection. Additional disinfection of Fecal Coliform bacteria is required to meet stringent ADEC requirements for the marine outfall effluent. Chlorination and UV treatment are two methods of bacteria removal. UV disinfection was selected for this project. Chlorination would require an addition tank and a chlorine dispenser unit. Chlorination could become a problem if chlorination is not controlled properly and the ADEC chlorine effluent limits are exceeded.

Excess chlorination is not a concern with UV units. UV units are inexpensive, easy to install, and easy to maintain. The UV manufacturer claims one UV disinfection unit can remove up to 99.9% of remaining bacteria not removed by the Ecoflo bio-filtration units. For this project two UV units will be placed in series, to achieve a 99.9999% reduction. The UV disinfection units will be installed upstream of the outfall near the existing WTP where existing power is easily accessible.

Pipe Cover. Winter temperatures in Hollis are mild, comparable to Kodiak and Southwest Alaska. For this project Hollis is placed in the same temperature group as Kodiak and the Alaska Peninsula (south of Chignik). Two feet minimum ground cover is specified, per 18AAC72.030.

Permitting. This project will be covered by the State of Alaska APDES general permit AKG572000 for Small Publicly Owned Treatment Works. Application for coverage under the permit requires submittal of a

Maybeso-Hollis Wastewater System Design 5 two-page Notice of Intent (NOI) form. Quarterly sampling of the sewer effluent and influent are required under the permit. This project will require an ADEC engineering plan review prior to construction. Upon final review ADEC will issue an ‘Approval to Construct’ letter.

Commissioning. Premier Tech recommends sending a technician to the site during commissioning for quality assurance. A cost for commissioning has been included in the cost estimate. The cost includes time and travel expenses for the Premier Tech technician.

Construction Cost Estimate. A cost estimate for the project was completed by Rider Levett Bucknall (RLB) February 27, 2017. The RLB estimate for construction is $309,122, excluding design contingency and price escalation. Total cost is estimated to be $340,807 including price escalation and design contingency.

Maintenance. Maintenance and operation of Ecoflo units and septic tanks will not require a certified operator. The filters at the outlet of each septic tank should be cleaned on a regular basis (annually).

Cleaning the filters will require pulling of the filters from the outlet tees and rinsing with a garden hose Sludge depth in the septic tanks should be checked every few months. The Ecoflo units should be inspected every six months and the filtration material raked/ turned over per the manufacturer’s instructions. The septic tank solids need to be pumped out every year. A septic tank pumping service is located in Craig, a 30 minute drive by paved highway. The filtration material in the Ecoflo units needs to be changed out every 10 to 15 years. The UV unit light bulbs should be pulled and cleaned quarterly.

The bulbs need replacement every two years.

Maintenance Costs. Each septic tank should be pumped at least once per year. During pumping most of the solids at the tank bottom and the scum from the top layer are targeted for removal. Much of the liquid is also removed during the process. An estimate from the local septic tank pumping service is $1200 per truck load (1000 gallons pumped). The estimated annual cost is roughly $4000 to $6000 per year for all three tanks. UV bulb replacement cost for two UV units is about $200 every two years.

ADEC will require sampling of the influent and effluent on a quarterly basis as a requirement of the APDES permit. A rough estimate of cost for each sampling is about $1000 (includes labor for sampling, shipping, and testing). The estimated annual cost for four sampling occurrences per year is roughly $4000 per year.

3.2 Unselected Alternatives

Unselected alternatives included an infiltration leach field system and a soil mound system.

A leach field system would consist of septic tanks and distribution pipes to distribute the outflow septic water over a large area for infiltration. A distribution box immediately outside the septic tank would disperse the outflowing septic water equally between distribution pipes. A leach field system is heavily dependent on soils that percolate. The State of Alaska Department of Environmental Conservation requires an infiltration rate of at least ½ inch per hour for underlying soils for a leach field system. Results of percolation tests conducted by Shannon & Wilson Inc. in August 2016 show the underlying soils have a percolation rate of .05 inch per hour. A leach field system would not meet the requirements of ADEC therefore could not be permitted.

Soil mound systems are similar to leach field systems. A mound system is an alternative that can work in some cases where the underlying soils do not have sufficient percolation rates or have high ground water.

The elevated mound system would allow a wider distribution of wastewater and would provide some treatment within the mound layer. This option was dismissed over concerns that untreated septic water would not infiltrate into the ground and would seep out the edges of the mound. In addition a mound system would need to be located uphill of the existing gravity sewer pipe due to space constraints. This would require the additional cost of a pump vault/dosing chamber and installation of an electrical service.

United States Department of Agriculture Forest Service

Final, March 1, 2017

Technical Specifications: TOC

TECHNICAL SPECIFICATIONS

TABLE OF CONTENTS

Section Title__________________________________________

02 00 00 Survey 03 26 23 Mobilization 03 30 00 Concrete 26 05 43 Electrical Installation 31 00 00 Earthwork 31 10 00 Site Clearing 31 25 00 Erosion and Pollution Control 33 31 00 Sewerage Piping and Tanks 35 53 00 Marine Outfall

Final, March 1, 2017

SURVEY Section 02 00 00 Page 1 of 2

SECTION 02 00 00 - SURVEY

PART 1 – GENERAL

A. All survey work shall be performed by a third party Survey Subcontractor retained by the Contractor. All survey work performed shall be under the direct supervision of an Alaskan Registered Professional Land Surveyor working for the Survey Subcontractor.

1.2 QUALITY ASSURANCE

A. It is the Contractor’s responsibility to establish or check all survey control prior to starting any survey activity to ensure the project is properly located and constructed according to the construction documents. If discrepancies are found between the control and the construction documents, the Contractor shall notify the Engineer immediately.

B. The Contractor is responsible for preserving and protection all monuments and reference points. In the event of their loss or destruction, the Contractor shall pay all costs for their replacement.

1.3 SUBMITTALS

A. Submit the name and registration number of the registered surveyor in responsible charge of the survey work.

B. If final location of sewer piping, manholes, and tanks varies from the contract drawings submit a final as-built survey of the locations of sewer piping, manholes, and tanks.

C. Final as-built survey, if required, shall be paid for by the contractor.

PART 2 – PRODUCTS

Not Used.

PART 3 – EXECUTION

1.4 SURVEY

A. The Contractor shall provide sufficient control points for all surveys construction of piping, tanks, and manholes.

B. The southwest corner of Lot 3 A.S.L.S 96-31 U.S. Forest Service will be destroyed during construction. Provide two reference points to facilitate monument replacement following construction.

PART 4 – MEASUREMENT AND PAYMENT

Final, March 1, 2017

SURVEY Section 02 00 00 Page 2 of 2

4.1 MEASUREMENT

A. The method of measurement for Construction Survey shall be a lump sum cost item on the bid schedule, to be measured at the completion of this project. The lump sum cost for Construction Survey measurement shall include all project control, staking, reference points, and re-staking the southwest corner of Lot 3 A.S.L.S 96-31 U.S.

Forest Service.

B. As built survey, if required to as-built facilities not located where specified by contract drawings, will be paid for by the contractor.

4.2 PAYMENT

A. Payment shall be made under the following units:

ITEM UNIT

Construction Survey Lump Sum

END OF SECTION 02 00 00

Final, March 1, 2017

MOBILIZATION Section 03 26 23 Page 1 of 2

SECTION 03 26 23 – MOBILIZATION

PART 1 - GENERAL

1.1 DESCRIPTION OF WORK

A. The Work covered in this section includes mobilization and demobilization.

1.2 COORDINATION

A. It is the Contractor’s responsibility to verify with the Hollis School and Hollis Community Library that the staging area immediately south of the Library is available for storage.

B. Permission from the Hollis School or U.S. Forest Service will be required to stage or store materials outside the designated areas shown in the contract drawings.

1.3 SUBMITTALS

A. Submit for approval a Staging Plan showing the Contractor’s proposed layout of materials and equipment.

PART 2 - PRODUCTS

2.1 MATERIALS

A. Safety fencing.

PART 3 - EXECUTION

3.1 MOBILIZATION

A. Stage materials and equipment according to the approved staging plan.

B. Delineate staging areas with safety fencing.

C. Do not store soil materials at the site immediately south of the Hollis Community Library.

D. Maintain adequate lane width for access between the Hollis Library and US Forest service property.

Final, March 1, 2017

MOBILIZATION Section 03 26 23 Page 2 of 2

3.2 DEMOBILIZATION

A. Remove equipment and unused materials from the site immediately south of the Hollis Community Library as soon practicable.

B. Remove all debris and dispose in the Klawock landfill.

C. Restore, re-grade, and seed disturbed areas.

4.1 MEASUREMENT

A. Measurement for mobilization includes costs to mobilize and demobilize all equip-ment, materials, job trailers, and supplies required to complete the work as specified in the contract documents.

4.2 PAYMENT

A. Payment shall be made under the following units:

ITEM UNIT

Mobilization Lump Sum

END OF SECTION 03 26 23

Final, March 1, 2017

CONCRETE Section 03 30 00 Page 1 of 4

SECTION 03 30 00 – CONCRETE

PART 1 - GENERAL

1.1 SUMMARY

A. This Section specifies concrete requirements for the Hubbel Hot Box footing.

B. Related Sections: Section 31 00 00 Earthwork.

1.2 REFERENCES

A. ACI Publications: Comply with the following unless modified by requirements in the Contract Documents:

1. ACI 301, Specification for Structural Concrete,

2. ACI 117, Specifications for Tolerances for Concrete Construction and

Materials.

1.3 SUBMITTALS

A. Design Mixtures: For each concrete mixture.

PART 2 - PRODUCTS

2.1 FORM-FACING MATERIALS

A. Smooth-Formed Finished Concrete: Form-facing panels that will provide continuous, true and smooth concrete surfaces. Furnish in largest practicable sizes to minimize number of joints.

2.2 STEEL REINFORCEMENT

A. Reinforcing Bars: ASTM A 615/A 615M, Grade 60, deformed.

B. Bar Supports: Bolsters, chairs, spacers and other devices for spacing, supporting and fastening reinforcing bars and welded wire reinforcement in place. Manufacture bar supports from steel wire, plastic or precast concrete according to CRSI's Manual of Standard Practice.

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CONCRETE Section 03 30 00 Page 2 of 4

2.3 CONCRETE MATERIALS

A. Cementitious Material: Use the following cementitious materials:

1. Portland Cement: ASTM C150, Type I or I/II.

B. Normal-Weight Aggregates: ASTM C33, graded, 1-inch nominal maximum coarse-aggregate size.

1. Fine Aggregate: Free of materials with deleterious reactivity to alkali in cement.

C. Water: ASTM C 94/C94M and potable.

2.4 COLD WEATHER

A. Moisture-Retaining Cover: ASTM C 171, polyethylene film or white burlap-polyethylene sheet.

B. Clear, Waterborne, Membrane-Forming Curing Compound: ASTM C309, Type 1, Class B, nondissipating.

2.5 CONCRETE MIXTURES

A. Proportion normal-weight concrete mixture as follows:

1. Minimum Compressive Strength: 3500 psi at 28 days.

2. Maximum Water: Cementitious Materials Ratio: 0.45.

3. Slump Limit: 5 inches for concrete with verified slump of 2 to 4 inches before adding high-range water-reducing admixture or plasticizing admixture, plus or minus 1 inch.

2.6 CONCRETE REDI-MIX

A. Ready-Mixed Concrete: Measure, batch, mix and deliver concrete according to ASTM C94/C94M and furnish batch ticket information.

PART 3 - EXECUTION

3.1 FORMWORK

A. Construct formwork so concrete members and structures are of size, shape, alignment, elevation and position indicated, within tolerance limits of ACI 117.

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CONCRETE Section 03 30 00 Page 3 of 4

B. Bullnose exterior corners and edges of permanently exposed concrete (¾ inch bullnose).

3.2 STEEL REINFORCEMENT

A. General: Comply with CRSI's Manual of Standard Practice for placing reinforcement.

3.3 CONCRETE PLACEMENT

A. Before placing concrete, verify that subbase is smooth and meets the compaction requirements specified in section 31 00 00 Earthwork.

B. Cold-Weather Placement: Comply with ACI 306.1.

3.4 FINISHING FORMED SURFACES

A. Finishing Curbs: Forms shall not be removed until the concrete has set sufficiently to retain its true shape. Final finish shall be obtained by brooming the surface, including the troweled edge to a gritty finish after all free moisture has disappeared from the surface. Sprinkling of cement or sand for blotting will not be permitted. Unsightly or poorly finished surfaces will be considered grounds for rejection of the Work. The top and face of the finished concrete surfaces shall be true and straight, of uniform width and free of cracks, humps, sags or other irregularities. The finished concrete surface shall not vary more than 0.02 feet from a 4 foot straight edge.

3.5 CONCRETE PROTECTING AND CURING

A. General: Protect freshly placed concrete from premature drying and excessive cold or hot temperatures. Comply with ACI 306.1 for cold-weather protection and ACI 301 for hot-weather protection during curing.

B. Cure concrete according to ACI 308.1, by one or a combination of the following methods:

1. Moisture-Retaining-Cover Curing: Cover concrete surfaces with moisture-retaining cover for curing concrete, placed in widest practicable width, with sides and ends lapped at least 12 inches and sealed by waterproof tape or adhesive. Cure for not less than seven days. Immediately repair any holes or tears during curing period using cover material and waterproof tape.

2. Use liquid membrane curing compound in accordance with ADOT Standard Specifications for Highway Construction, Section 501.

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CONCRETE Section 03 30 00 Page 4 of 4

3.6 CONCRETE SURFACE REPAIRS

A. Defective Concrete: Repair and patch defective areas when approved by the COR representative. Remove and replace concrete that cannot be repaired and patched to the COR representative’s approval.

PART 4 - MEASUREMENT AND PAYMENT

4.1 MEASUREMENT

A. Measurement includes concrete, finishing, reinforcement and accessories necessary to install the concrete specified in the design documents.

4.2 PAYMENT

A. Payment for concrete shall be lump included in the Electrical Installation bid item.

END OF SECTION 03 30 00

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ELECTRICAL INSTALLATION Section 26 05 43 Page 1 of 7

SECTION 26 05 43 – ELECTRICAL INSTALLATION

PART 1 - GENERAL

1.1 DESCRIPTION

A. Provide all labor, materials, equipment, and incidentals as shown, specified, and required to furnish and install a “Hot Box” fiberglass enclosure with heat cable, underground schedule 80 PVC conduit, XHHW 600 V wire, 4 space 120 V load center and grounding for a low voltage underground electrical system as shown in the contract drawings.

B. Coordinate fiberglass enclosure, underground conduit, and load center installation with UV disinfection unit, junction box and piping, and other underground facilities.

Coordinate locations and elevations from those indicated on the drawings and as required to suit field conditions and to ensure that conduit runs drain properly, and as approved by the Contracting Officers Representative (COR).

1.2 REFERENCES

A. Electrical components shall be listed and labeled as defined by the National Electrical Code, NFPA 70, Article 100, by the Underwriters Laboratories (UL) or other testing agencies acceptable to the authorities having jurisdiction, and marked for the intended use.

B. Standards referenced in this Section are:

NFPA 70, National Electrical Code

UL 50 Enclosures for Electrical Equipment

UL 651 Rigid Non-Metallic Conduit and Fittings

NEMA TC2 PVC Conduit

NEMA TC3 PVC Fittings

NEMA 250 Enclosures for Electrical Equipment

ASTM B3-Copper Conductor

ASTM B8-Conductor Standing

ICEA S95-658 Non Shield Power Cables less than 2000 V

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ELECTRICAL INSTALLATION Section 26 05 43 Page 2 of 7

NEMA WC 70 Non Shielded Power Cables less than 2000 V

UL 44 Thermoset Insulated Wires and Cables

UL 486 Wire Connectors

NEMA PB 1 Panelboards

NEMA PB 1.1 Instructions for Proper Installation of Panelboards

NEMA AB 1 Molded case Circuit Breakers

NEMA AB 3 Molded Case Circuit Breakers and then Application

UL 67 Panelboards

UL 489 Molded Case Circuit Breakers

ASSE 1060 Performance Requirement for Outdoor Enclosures

UL 943 Standard for GFI Receptacles

ACI 304 Guide for Measuring, Mixing and Placing Concrete

1.3 SUBMITTALS

A. Submit the Following:

1. The manufacturer’s product data and catalog sheets that show enclosure dimensions and attachment points shall be provided for the “Hot Box” enclosure.

2. The manufacturer’s technical data shall be furnished for each wire and cable type.

3. The manufacturer’s catalog data sheets shall be furnished for each conduit type.

4 . The manufacturer’s product data and catalog sheets that show ratings and support point dimensions shall be furnished for the load center.

5. The manufacturer’s technical data shall be furnished for each grounding cable type.

PART 2 - PRODUCTS

2.1 MATERIALS

A. Hot Box Enclosure

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ELECTRICAL INSTALLATION Section 26 05 43 Page 3 of 7

A Hubbell Type HB.1 “Hot Box” insulated fiberglass enclosure shall be furnished for installation above the UV disinfection unit junction box. The nominal dimensions of this enclosure shall be 13” Width, 27” Length and 23” High. The Hubbell catalog number is HF013027023. The “Hot Box” insulated fiberglass enclosure shall be equipped with a factory furnished 60 W, 120 V single phase heat trace cable. In addition, a 15 A GFCI weather resistant outdoor receptacle is required to connect the 60 W heat trace cable to a small junction box that will be located on the back wall of the enclosure. The fiberglass enclosure shall meet the requirements of ASSE 1060 and the receptacle shall conform to UL 943.

B. Low Voltage Electrical Wire and Cable

Single conductor wire and cable used for outdoor circuits shall be Type XHHW insulation with stranded copper conduit per ASTM B8. Specific sizes are noted on the contract drawings. Insulation shall be cross-linked polyethylene XHHW rated 600 V and 90 degrees C in accordance with ICEA S-95-658, NEMA WC 70 and UL 44.

Cable shall be UL Listed Type XHHW and shall be sunlight resistant and suitable for wet locations at 75 degrees C. All cables for power wiring shall be color coded. Wire connectors shall be compression type suitable for a wet location and conforming to UL 486.

C. Underground Non-Metallic Conduit and Fittings

Rigid non-metallic conduit shall be Schedule 80 polyvinyl chloride (PVC) electrical conduit rated for underground or outdoor exposed applications with 90 degrees C insulated conductors. PVC conduits shall comply with NEMA Specification TC-2 and shall be UL listed. The PVC compound shall contain modifiers to improve sunlight resistance and weatherability and to minimize heat distortion. PVC fittings and conduit bodies shall be the glued type and shall be fabricated in accordance with NEMA TC 3 and UL 651. Fittings shall be solvent cemented with glue recommended by the manufacturer.

D. Load Center with Molded Case Circuit Breakers

An outdoor 120/240 VAC 40 A 2 Space load center with two 15 A single pole circuit breakers shall be furnished to protect the two 15 A 120 V 3 wire circuits to the UV disinfection unit. The short circuit interrupting rating shall be 10,000 A. The load center shall be equipped with a NEMA 3R rainproof enclosure. The outdoor 120/240 VAC 40 A 2 space load center shall be a Square D QO2L4ORB with two 15 A single pole QO circuit breakers. The load center shall meet the requirements of NEMA PB1.1 and UL 67. The circuit breakers shall meet the requirements of NEMA AB1 and AB3 and UL 489.

E. Grounding Conductor

Equipment grounding conductors used for outdoor circuits in underground conduits shall be copper wire with ASTM B8 stranding and insulated with green colored XHHW insulation per ICEA S-95-658, NEMA WC 70 and UL 44. The grounding shall be the same size as the circuit conductors and shall conform to NEC Article 250.

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ELECTRICAL INSTALLATION Section 26 05 43 Page 4 of 7

PART 3 - EXECUTION

3.1 INSPECTION

A. Examine conditions under which the Work will be installed and notify Engineer in writing of conditions detrimental to proper and timely completion of the Work. Do not proceed with the Work until unsatisfactory conditions are corrected.

3.2 INSTALLATION OF “HOT BOX ENCLOSURE

A. Excavation and Concrete Slab Foundation:

1. Provide “Hot Box” HB.1 enclosure where shown on the plan drawing and verify the required location at the site. Orientate the 2 drains to be in line with the natural water runoff.

2. Excavate approximately a 36”x48” flat area around the UV disinfection unit junction box and fill with 4” gravel bedding material to the required vertical base elevation of a 6” slab foundation. Then install side wall forms for a 20” wide by 33” long concrete slab foundation with an internal 8”x21” rectangular opening for the UV unit junction box.

3. Reinforce the concrete slab with two rings of #4 rebar. Then install four 3/8” x 4” anchor bolts that line up with the enclosure internal mounting tabs. Check that completed forms are level, securely braced and tight.

4. Pour 6” of concrete for the slab foundation and bullnose all exposed edges.

Cement used shall conform with the Concrete specification 03 30 00.

5. Install “Hot Box “ enclosure on concrete foundation and secure to anchor bolts with 3/8” nuts and washers.

3.3 INSTALLATION OF UNDERGROUND CONDUITS AND BOXES

A. Excavation, Conduit Layout, and Backfilling:

1. Excavate trench for underground conduit where shown on the plan drawing and verified at the site. The typical cross section for the trench is shown in the electrical details.

2. Remove large rocks from bottom of trench and backfill with 3” bedding material to insure that the bottom of the trench is smooth, uniform and without voids or sharp objects.

3. Layout the specified ¾” schedule 80 PVC conduit in the bottom of the trench.

Avoid large bends except where specified and no more than three 90 degree bends will be permitted. Glue required joints together with PVC glue approved by the

Final March 1, 2017

ELECTRICAL INSTALLATION Section 26 05 43 Page 5 of 7 conduit manufacturer. Conduit depth shall be at least 24” measured to top of conduit.

4. Then install 6” bedding material on top the conduit for bedding and hand tamp over and around conduit.

5. Backfill remainder of trench with unclassified fill that does not contain large rocks or organic matter. Install a “Warning” marker tape 6-12” below finished grade. Tamp the backfill and heap up extra backfill to prevent settlement below grade.

6. Install a pulling string in the conduit and cap at each end to prevent dirt or water from entering conduit.

3.4 INSTALLATION OF CONDUIT JUNCTION BOXES AND RECEPTACLES

A. Conduit Junction Boxes and Receptacles:

1. Install conduit junction and receptacle boxes shown on the one line diagram and the electrical details. The boxes should be attached to the back wall of the “Hot Box” enclosure.

2. A two gang waterproof PVC junction box (Hubbell PDB77550GY) with a sealed screw cover shall be installed in the “Hot Box” enclosure at the end of the underground conduit. Then, a single gang PVC receptacle box (Hubbell PSB375550GY) with a 15 A weather resistant GFCI receptacle shall be installed above the junction box. The bottom of the receptacle box shall be mounted a minimum of 8” above the slab foundation.

3.5 INSTALLATION OF ELECTRICAL WIRE AND CABLE

A. Installation of Electrical Wire and Cable:

1. The #14 AWG XHHW wiring indicated on the one-line diagram shall be pulled between the load center and the “Hot box” enclosure.

2. One #14 AWG XHHW circuit shall terminate on the 15 A GFCI weather resistance receptacle in the “Hot Box” enclosure. The other #14 AWG XHHW circuit shall terminate in the junction box for the UV disinfection unit. The contractor shall follow the manufacturer’s instructions provided in the Salcor Model 3G UV Disinfection Unit Installation Manual.

3. All wiring shall be color coded:

a. Phase: Black

b. Neutral: White

c. Ground: Green

4. Wire and cable shall not be pulled at excessive tensions or bent at a radius that is less than the manufacturer’s recommendations for insulated conductors. All power and lighting circuits shall be continuous and shall terminate at the lugs of equipment.

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ELECTRICAL INSTALLATION Section 26 05 43 Page 6 of 7

3.6 INSTALLATION OF LOAD CENTER

A. Load Center Installation:

1. Provide a 120/240 V 40 A 2 space load center (SQ D Q02L40RB) next to the service disconnect as shown on the electrical details drawing. The load center shall be installed in accordance with the manufacturer’s instructions.

2. Modify the existing P1000 Unistrut box support by adding two new upright P3300 Unistrut galvanized brackets. These new brackets can be attached to the existing box support with 3/8” bolts and channel nuts. The new load center then can be attached to the brackets with small bolts or screws using the manufacturer’s predrilled holes. The holes should be sealed after installation.

3. Install two 120 V 15 A single pole QO circuit breakers. The two circuits to the “Hot Box” enclosure should terminate on the lugs of these two circuit breakers. The circuit identification should be marked on the panel face.

4. The main lugs of the new load center also should be terminated on the 120/240 V two pole main service disconnect using 3-#8 XHHW-2 wire.

5. The contractor shall paint the existing meter/service disconnect box with a rust resistant epoxy gray paint.

3.7 INSTALLATION OF GROUNDING

A. Grounding Requirements

1. The load center and service equipment shall be grounded in accordance with Alaska Power and Telephone requirements and Article 250 of the NEC. The ground wire shall be #4 copper and two ground rods are required. The contractor shall verify if the existing ground wire and ground rods are intact and conform to the AP&T requirements and shall make any necessary changes.

2. A continuous #14 AWG insulated equipment grounding conductor shall be run with each circuit to the “Hot Box” enclosure. Test the operation of the GFCI receptacle for the heat trace and the UV unit lamp per the manufacturer’s instructions.

PART 2 - MEASUREMENT AND PAYMENT

4.1 MEASUREMENT

A. The method of measurement for Electrical Installation shall be a lump sum cost item on the bid schedule, to be measured at the completion of this project. The lump sum cost for Electrical Installation shall include the cost of materials and labor necessary to complete the installation of: underground and above ground

Final March 1, 2017

ELECTRICAL INSTALLATION Section 26 05 43 Page 7 of 7 conduits; conduit and box supports; brackets; load center; circuit breakers; GFI receptacles; conductor wires; ground rods; junction boxes; above ground Hubbell Hot box; Hot Box concrete foundation; and associated hardware required to complete the installation of the electrical system shown on drawing E-1.

Measurement also includes the cost of excavation and backfill.

B. Payment shall be made under the following units:

ITEM UNIT

Electrical Installation Lump Sum

END OF SECTION 26 05 43

Final March 1, 2017

EARTHWORK Section 31 00 00 Page 1 of 9

SECTION 31 00 00 – EARTHWORK

PART 1 - GENERAL

1.1 SUMMARY

A. Section includes:

1. Excavating and backfilling for piping, tanks, and manholes.

2. Labor and materials as required to provide erosion and pollution control during construction.

1.2 REFERENCE DOCUMENTS

A. The State of Alaska Department of Transportation Standard Specifications for Highway Construction (2015).

http://www.dot.state.ak.us/stwddes/dcsspecs/index.shtml

B. Occupational Safety and Health Administration (OSHA) Trenching and Excavation safety links: https://www.osha.gov/SLTC/trenchingexcavation/

C. OSHA Trenching and Excavation Safety bulletin:

https://www.osha.gov/Publications/osha2226.pdf

D. OSHA Sloping and Benching guidelines:

https://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=sta ndards&p_id=10932

1.3 DEFINITIONS

A. Backfill: Material used to fill an excavation.

B. Excavation: Removal of material encountered above subgrade elevations and to lines and dimensions indicated.

C. Unclassified Fill: Soil materials used for backfill in areas not under tanks.

D. Subgrade: Surface or elevation remaining after completing excavation or top surface of a fill or backfill immediately below subbase,…