CLSU J-396 Utility Masterplan

Utility Master Plan

November 16, 2021

Prepared by:

DSI Design + Construction Long Enginerering DP Alexander Consulting LM&T Services

Clayton State University

2Table of Contents

Section 1. Executive Summary Background Objectives Methodology Report Overview Summary of Findings and Recommendations

Section 2. Plan Overview Existing & Future Considerations

Section 3. Existing Campus Conditions Domestic Fire and Water Sanitary Sewer Chilled Water & Hot Water Natural Gas

Section 4. Recommendations Domestic Fire and Water Sanitary Sewer Chilled Water & Hot Water Natural Gas

Section 5. Strategies for Repairs Domestic Fire and Water Sanitary Sewer Chilled Water & Hot Water Natural Gas

Section 6. Budgeting & Phasing General Phasing Budgets

Appendices A.

B.

C.

D.

E.

F.

G.

Campus Utility As-Built Documents 2010 Master Plan Document Campus Utility As-Planned Documents Building Load Requirements CHW + HW Analysis Natural Gas Analysis CCTV and Hydrant Test Reports

Section 1. Executive Summary

4Section 1. Executive Summary

Background Clayton State University (CSU), a Board of Regents of the University System of Georgia (BOR) school, was founded in 1969 and home to over 7,000 students, 230 faculty members, and four colleges. Located in Morrow, GA, CSU is comprised of 21 primary buildings located on 214 acres of land. Six lakes, established trees, and well-maintained trails offer a “park-like” campus experience just minutes away from the busy metro Atlanta area.

As CSU plans for its future, it has considerable strengths upon which to build. Its academic strengths are in its 4 schools and colleges, and in the commitment of its faculty, staff and students to promoting “excellence in teaching, research, and service.” To support these strengths, the physical infrastructure must be robust and sustainable enough to support the University’s academic and Research programs.

The out-of-sight underground utilities are the supporting foundation for campus daily operations and future growth to aid in creating state-of-the-art academic and teaching facilities. CSU’s current utility systems were primarily installed during initial campus development from 1968-1969, and most of this original infrastructure is at or beyond its reasonable life cycle. The frequency of failures in 50+ year old systems has increased in recent years, causing disruptions and inefficiencies, resulting in negative impacts to campus operations and risk of related safety hazards.

Objectives DSI Design + Construction, Inc. (DSI) was contracted by CSU through the BOR to evaluate the existing utilities serving the Campus. The specific utilities to be evaluated are Natural Gas, Chilled/Hot Water, Domestic and Fire Water, and Sanitary Sewer. DSI is to provide recommendations to alter, upgrade, or modify these utilities based upon a specific criterion consisting of the condition of the utility, and its ability to support current buildings and future growth. In addition to providing a campus wide evaluation and recommendations for the utilities, DSI was contracted to address specific critical priority items to replace/upgrade fragile clay sanitary sewer lines, replace asbestos-containing chilled/hot water supply lines, replace failing domestic water supply valves, and replace the aged Campus-owned natural gas lines causing unsteady operations at the campus.

Additional infrastructure elements, such as Storm Systems, Water Runoff, and Information Technology (IT) were not necessarily analyzed as part of this UMP; however, these infrastructure components will need to be considered for constructability and scheduling purposes as the rehabilitation of the utilities in this UMP are implemented.

Methodology The following methodology was implemented to develop this Utility Master Plan (UMP) for the Natural Gas, Chilled/Hot Water, Domestic and Fire Water, and Sanitary Sewer systems:

� Due to available funding, a “field-run” survey, test-holes, or potholing was not undertaken to visually identify all the utilities throughout the 214 acres. In lieu of this approach, the DSI team developed as-built documentation of the campus utilities through record drawings from a variety of sources and interviews with Campus facilities staff.

� Site investigations of mechanical rooms, Chilled/Hot Water vaults and interviews with facilities staff were undertaken to confirm as-built information.

� Each utility system was then evaluated for capacity, functionality, reliability, ease of maintenance, age, and overall ability to serve the present and future needs of the campus.

� Cost estimates for each recommendation were developed and broken into phases based upon potential annual funding limitations.

Report Overview The following UMP provides an analysis of the present utility systems currently servicing the buildings. This evaluation identifies concerns and provides considerations and recommendations. In addition, a phased strategy is proposed based upon cost estimates and constructability factors.

5Section 1. Executive Summary

Summary of Findings and Recommendations:

Natural Gas Findings:

The campus has doubled its building square footage since opening in 1969. As such, the campus-owned natural gas piping system was extended to new buildings that were in the near proximity of the original campus-owned natural gas lines. As these buildings were added, the design engineers evaluated the capacity of the campus-owned natural gas lines and found the system to be adequate to serve the proposed building. Their assumptions were based on AGL supplying the campus adequate gas. Aged Natural Gas distribution piping along with inadequate Natural Gas pressure by AGL, has substantially compromised Natural Gas distribution, both old and new, throughout campus. As a result, and in the winter months, when demand is higher, building emergency generators and heating systems begin to fail to operate properly.

Recommendations:

Natural Gas distribution piping and AGL service meter stations need to be replaced with code compliant materials sized appropriately for current and future demand. Additionally, coordination with AGL on the actual Natural Gas pressure needs to be implemented.

Construction Cost:

$1

Note: At the time of this report, AGL has provided a proposal to CSU for a full replacement of distribution piping and meters for $1.

Chilled Water & Hot Water (CHW/HW) Findings:

CSU has approximately 5,000 LF of combined underground chilled water (CHW) and heating water (HW) piping system in approximately 1,250 LF of direct buried trenches. The four-pipe system connects 10 buildings by way of four utility vaults intersecting the main distribution piping. Each system has a supply and return pipe of equal size providing heating and cooling water to the buildings. The chiller and boiler plant is located in the basement of Magnolia Hall, which is also served by both systems.

The CHW/HW piping consists of the original 1968-1969 installations and newer installations occurring between 1974-2010 to accommodate campus growth. The original CHW & HW distribution system was constructed of asbestos cement pipe (transite) with some sections replaced from the 1980s to 2003 to allow for additional building loads coming online. The new piping was non-asbestos materials.

Recommendations:

Through field investigations, it was determined the manhole structures consisting of (4) total all need to be renovated for easier access, maintenance, and for safety purposes.

All known transite and/or piping over 40 years of age needs to be replaced. Because our analysis did not include a “field-run” survey or “potholing,” a portion of the CHW/HW piping needs to be field-verified to confirm where the transite piping conditions exist.

Construction Cost:

$2,949,127

Domestic and Fire Water Findings:

CSU has over 8,350 LF of water distribution lines throughout campus.

These water lines vary in material types and age. In most cases, the water services provided to the existing buildings are nearing their end of service or are undersized based on new code and standards. At this time, both domestic and fire water services are fed from a combined water service that is routed throughout campus, stemming from three main points of service into the campus.

Numerous buildings on campus do not currently provide fire protection systems interior to the building and do not have a connection to the exterior water services for future fire protection provisions.

6Section 1. Executive Summary

Fire hydrants throughout the campus are often served from a 6” or smaller diameter watermain.

Many buildings do not have their own isolation/shutoff valves allowing each building to be isolated from the campus service for maintenance.

Recommendations:

The main concern is to address the combined Domestic and Fire Water service lines by increasing the size of all main trunks to a minimum of 8”, address critical items currently impacting campus operations (leaks, failing valves, etc.), and installing strategic isolation valves and redundant looping to accommodate maintenance and future growth.

Construction Cost:

$880,336

Sanitary Sewer

Findings:

CSU’s Sanitary Service is largely composed of vitrified clay pipe (VCP) that was originally installed during the initial campus development from 1968- 1969. The entire campus sanitary services terminate at a 12-inch clay pipe (owned by Clayton County Water Authority (CCWA)) that discharges at the southeast corner of the property. All sanitary services are believed to flow via gravity—there are no sewer lifts or pump stations on site. There are abutting properties that appear to be adding into this service line and could affect future capacities. Generally, most pipe is 6- or 8-inch VCP unless it was recently replaced or part of a recent development such as for Lakeview Discovery and Science Center. Numerous locations throughout campus have been noted by CSU staff as having reoccurring root intrusion issues.

With an age of approximately 60 years, the existing VPC is at its end of lifespan.

Recommendations:

The primary concern to be addressed is the replacement of all VCP sanitary piping with ductile iron pipe engineered and constructed to accommodate current/future growth and local design specifications (i.e. CCWA).

Coordination with CCWA should be initiated to address the 12” VCP pipe servicing the campus.

Construction Cost:

$5,648,501

Other Utilities: Storm & Drainage Systems, Information Technology (IT) Findings:

Evaluating the Storm/Drainage Systems and IT infrastructure is not included in this UMP; however, it is noted a substantial amount of these systems appear to have been established during the original 1968-1969 development of the campus. These systems should undergo a detailed analysis for the utility’s ability to support current buildings and future growth.

Recommendations:

It is economically sound to address all underground utilities in an area of “phase” at one time in lieu of unsystematic partial measures taken over a period of time. This UMP recommends any required Storm/Drainage Systems and IT infrastructure improvements be incorporated into the rehabilitation of Domestic/Fire Water, Sanitary Sewer and Chilled/Hot Water utility work at the same time.

Construction Cost:

TBD

Construction Cost by Utility Utility SCL Cost Notes CSU Owned Natural Gas $1 AGL has offered to purchase CSU piping system and Install all new system Chilled Water & Hot Water $2,949,127 Pending exploratory work during Phase 1

Domestic & Fire Water $880,336 Upgrade domestic water to meet Georgia and Clayton Co. Fire Codes

Sanitary Sewer $5,648,501 Upgrade aged sewer system Storm Sewer/Drainage TBD Not included in this report Information Technology (IT) TBD Not included in this report

TOTAL: $9,477,965 Total Project Budget

7Section 1. Executive Summary

EXISTING UTILITY SERVICES

N

UTILITY LEGEND

FIRE/DOMESTIC

WATER

SANITARY SEWER

HW/CW LINES

BUILDING LEGEND

1 - ATHLETICS AND FITNESS BUILDING

4 - ARTS AND SCIENCES BUILDING

5 - CLAYTON HALL

6 - COLLEGE OF BUSINESS

7 - EDGEWATER HALL

8 - FACILITIES MANAGEMENT

9 - FACULTY HALL

10 - SCHOOL OF NURSING

11 - J.M. BAKER UNIVERSITY CENTER

12 - LAB ANNEX BUILDING

13 - LAKER HALL

14 - DISCOVERY SCIENCE BUILDING

15 - LECTURE HALL

17 - MAGNOLIA HALL

18 - MUSIC AND EDUCATION BUILDING

20 - SPIVEY HALL

21 - STUDENT ACTIVITIES CENTER

21 20

Section 2. Plan Overview

9Section 2. Plan Overview

EXISTING & FUTURE CONSIDERATIONS

This UMP’s considerations and recommendations includes not only the impact aging and failing utilities had on existing buildings, but also an all-encompassing evaluation of current and future needs. DSI’s proposed recommendations and utility routing strategies take into consideration future buildings as designated in the 2010 CSU Masterplan Executive Summary and as refined by interviews with Facilities Staff.

CAMPUS PROPOSED UTILITIES

N

UTILITY LEGEND

EXISTING FIRE/DOMESTIC

WATER

EXISTING HW/CW LINES

PROPOSED FIRE AND

DOMESTIC WATER

EXISTING SANITARY

SEWER

PROPOSED SANITARY

SEWER

PROPOSED HW/CW LINES

EXISTING BUILDING LEGEND

1 - ATHLETICS AND FITNESS BUILDING

3 - ARBOR HALL

4 - ARTS AND SCIENCES BUILDING

5 - CLAYTON HALL

6 - COLLEGE OF BUSINESS

7 - EDGEWATER HALL

8 - FACILITIES MANAGEMENT

9 - FACULTY HALL

10 - SCHOOL OF NURSING

11 - J.M. BAKER UNIVERSITY CENTER

12 - LAB ANNEX BUILDING

13 - LAKER HALL

14 - DISCOVERY SCIENCE BUILDING

15 - LECTURE HALL

16 - LIBRARY

17 - MAGNOLIA HALL

18 - MUSIC AND EDUCATION BUILDING

20 - SPIVEY HALL

21 - STUDENT ACTIVITIES CENTER

FUTURE BUILDING LEGEND

SCIENCE BUILDING or

ACADEMIC LIBRARY

LIBRARY

DINING / STUDENT LIBRARY

STUDENT LIFE

FACILITIES EXPANSION

SAC EXPANSION

RESIDENTIAL BUILDING

ATHLETICS / CONVOCATION

BUILDING

6 STUDENT LIFE

21 20 https://www.dropbox.com/s/hcrl7zk6y3fxjlk/CSU_Executive_Summary_120210.pdf?dl=02010

Section 3. Existing Campus Conditions

11Section 3. Existing Campus Conditions

4. Fire hydrants throughout the campus are often served from a 6” or smaller diameter watermain. Connection of a fire hydrant assembly to a service 6” or smaller in diameter is not conforming with current Clayton County code requirements.

5. Fire hydrant flow testing was performed on a selected sample of existing fire hydrants both on and off campus. The testing locations document the flow and pressures entering the campus as well as, internal to the campus. The observed test results can be found in Appendix G.

6. The main concerns to be addressed by remediation to the Combined Domestic and Fire utility services are: increase the size of all the main trunks to a minimum of 8-inch diameter pipes to accommodate Master Plan building expansions; address critical issues currently ailing the campus, such as leaks and failing valves; and provide redundant looping with valves to provide options for future connections and isolation capabilities.

7. Currently, there are 6-inch laterals servicing multiple buildings. In one case, a 2-inch lateral is servicing a fire hydrant near Arbor Hall. If the 6-inch laterals are replaced with 8- or 10-inch lines, future building developments will have appropriately sized water trunks to connect to.

An objective of this UMP is to evaluate the existing Conditions for Natural Gas, Domestic and Fire Water, Sanitary Sewer and Chilled/Hot Water utilities. This analysis is to determine the following for each of these utilities:

1. Which systems are owned and maintained by CSU.

2. Present Condition, including expected useful life.

3. The ability to sustain current and future campus operations.

4. Considerations for long-term and efficient Operations & Maintenance.

5. Critical items impacting the current Campus operations.

Domestic and Fire Water

1. Domestic and fire water services on CSU’s campus vary in both material types and age of installed utility. In most cases, the water services provided to the existing buildings are nearing their end of service or are undersized based on new code and standards. At this time, both domestic and fire water services are fed from a combined water service that is routed throughout campus, stemming from three main points of service into the campus. Initial observations noted are based on historical drawings from on-site developments that range from 2004-2019, in-person interviews with facilities management personnel, and survey information received from a survey conducted by Rochester & Associates on 07/20/2011.

2. Services to mains are in three locations: an 8-inch connection near the intersection of North Lee Street and Harper Drive, an 8-inch connection approximately 1,400 feet east of N. Lee Street, and a 6-inch connection north of the Arts and Sciences Building.

3. Numerous buildings on campus do not currently provide fire protection systems interior to the building and do not have connections to the exterior water services for future fire protection provisions.

12Section 3. Existing Campus Conditions

EXISTING DOMESTIC AND FIRE WATER SERVICES

N

WATER LEGEND

<6" WATER LINE

EXISTING BUILDINGS

6" WATER LINE

8" WATER LINE

DOMESTIC AND FIRE WATER NOTES

SERVICES TO MAINS

BUILDINGS ON CAMPUS

CURRENTLY DO NOT HAVE FIRE

SERVICE

FIRE HYDRANTS SERVICED

BY 6" MAINS OR SMALLER4

FIRE HYDRANTS THAT HAD

FLOW TESTING PERFORMED

INCREASE ALL MAINS TO

BE 8" OR LARGER

6" AND SMALLER

SERVING BUILDINGS7

EXISTING BUILDINGS

WITHOUT FIRE SPRINKLERS

13Section 3. Existing Campus Conditions

8. There are several issues on-site that have been labeled as critical and in need of repair as soon as possible.

These issues include:

a. Leaking at the valves and piping near the Central Chiller Plant.

b. Replacing three failing valves to the east of J.M. Baker University Center.

c. Replacing three failing valves to the east of Sanford Drive, south of Clayton State Blvd.

d. Replacing three failing valves to the west of College of Business, east of Clayton State Blvd.

e. No isolation valve for the Arts and Sciences Building.

f. No isolation valve for Lakeview Discovery and Science Center.

g. Replacing one failing valve near main located approximately 1,400 feet east of N. Lee Street.

h. Replacing failing isolation valve for Edgewater Hall.

N

DOMESTIC/FIRE WATER CRITICAL ITEMS

CRITICAL WATER ITEMS NOTES

LEAK AT VALVE AND PIPE

BY NEW CHILLER PLANTa b c

NO SHUTOFF VALVE FOR

BUILDINGe f g d h

MISALIGNED VALVE STEMS

VALVES NOT HOLDING

VALVES JUST TURN--NOT

HOLDING

NO SHUTOFF VALVE

VALVE NOT CLOSING

ISOLATION VALVE NEEDS

TO BE REPLACED

a b c d e f g h

14Section 3. Existing Campus Conditions

Sanitary Sewer

1. Sanitary sewer located on CSU’s campus is largely composed of vitrified clay pipe (VCP) that was originally installed during the initial campus development, over 60 years ago. Initial observations noted are based on historical drawings from on-site developments that range from 2004-2019, in-person interviews with facilities management personnel, and survey information received from a survey conducted by Rochester & Associates on 07/20/2011.

The entire campus service terminates at a 12-inch clay pipe that discharges at the southeast corner of the property. All sanitary services are believed to flow via gravity—there are no sewer lifts or pump stations on site. There are abutting properties that appear to be adding into this service line and could affect future capacities.

Generally, most pipe is 6- or 8-inch VCP, unless it was recently replaced or part of a recent development, such as for Lakeview Discovery and Science Center. Numerous locations throughout campus have been noted by CSU staff as having recurring root intrusion issues, requiring removal of the roots typically entering the pipe through cracks or failed joints. With an age of approximately 60 years, the existing VPC is nearing its end of lifespan and in preparation for future growth and expansion of the campus, replacement is strongly recommended.

2. The main trunk that services the campus is a 12-inch clay pipe that is owned and maintained by Clayton County Water Authority (CCWA).

This pipe extends south off site and there is limited information beyond the project’s extents. Removal and replacement of this 12-inch sewer main would require involvement and coordination with the

CCWA.

3. Closed Circuit Television (CCTV) inspection of representative areas of the campus sanitary sewer have been completed, allowing the design team and CSU to observe the differing conditions of the VCP piping and condition of the piping in the areas of continued issues. A summary of the CCTV inspection is provided in the Appendix G.

4. Record documents did not provide all sanitary sewer utilities. In these occurrences, we identified reasonable assumptions, as noted on the following graphic.

15Section 3. Existing Campus Conditions

EXISTING SANITARY SEWER SERVICES

N

SANITARY LEGEND

EXISTING BUILDINGS

6" VCP SANITARY LINE

8" VCP SANITARY LINE

SANITARY NOTES

AREAS OF ROOT INTRUSION

MAIN TRUNK TO CAMPUS

ASSUMED SANITARY ROUTING

ASSUMED SANITARY ROUTING

16Section 3. Existing Campus Conditions

Chilled Water & Hot Water (CHW/HW)

1. CSU has approximately 5,000 LF of combined underground chilled water (CHW) and heating water (HW) piping system in approximately 1,250 LF of direct buried trenches. The four-pipe system connects 10 buildings by way of four utility vaults intersecting the main distribution piping. Each system has a supply and return pipe of equal size providing heating and cooling water to the buildings. The chiller and boiler plant is located in the basement of Magnolia Hall, which is also served by both systems.

2. The original CHW and HW distribution was started in 1969 and served four newly constructed buildings: Magnolia Hall (Central Plant), Edgewood Hall, Faculty Hall, and Lecture Hall. Between 1974 and 2010, six additional buildings were constructed and connected to the system: Arts and Science (1974), Library (1979), Clayton Hall (1980), University Center (2002), College of Business (2007) and the Lab Annex (2010).

3. During the 1974 to 2010 additions, some upgrades were performed to the system, mainly to increase piping sizes for the expansion taking place in new construction. Some of the upgrade information has been retrieved from campus archives, and other information was gathered through conversations with Facility Management personnel and contractors that have worked on campus over the past 50+ years and witnessed some of the upgrade activities.

4. Based on the building construction dates mentioned above, the supporting underground CHW & HP systems vary from 11 years to 52 years in service. By industry standards, the average underground heating and cooling systems will perform for 30 to 40 years before experiencing major piping issues, such as exterior corrosion, interior erosion, and valve failures. This long reliable service life also includes a comprehensive maintenance program being in place, i.e., water treatment, valve maintenance and keeping the utility vaults dry.

5. CSU Facilities staff informed DSI that the original CHW & HW distribution system was constructed of asbestos cement pipe

(transite) with some sections being replaced between 1980 and 2003 to allow for additional building loads coming online. The new piping was non-asbestos materials. DSI has located record documents to support some of these upgrades. The project scope calls for the replacement of all transite piping materials. Therefore, some excavation will be required during the pre-design phase of each construction project to positively identify the existing pipe materials.

This specifically is the piping between manhole structures 1-4.

6. DSI’s engineering teams conducted three site investigations to inspect the building mechanical rooms, utility vaults and researched the campus archives. Sketches were made, photographs and notes taken, and documents copied of our observations and findings and are presented in this report. (See Appendix E for detailed records of this effort.)

7. This report analyzed existing CHW/HW utilities and their capabilities to serve existing buildings. Providing new or increasing the size of CHW/HW utilities to service future growth is not accounted for in this UMP. After field verification of the existing utilities and before the replacement is authorized, the size of the replacement piping should be considered for future growth.

Note: Because in-ground piping was not verified visually during the development of this UMP, it is recommended that test holes be conducted to confirm piping materials. The analysis of this UMP was derived from record documents and interviews with Facilities Staff.

17Section 3. Existing Campus Conditions

EXISTING CHILLED AND HEATING WATER SERVICES

N

CW/HW LEGEND

EXISTING BUILDINGS

SUSPECTED TRANSITE

PIPE

SUSPECTED

NON-TRANSITE PIPE

AREA TO BE SURVEYED AND

VERIFY PIPE MATERIAL

CW/HW MANHOLE

DESIGNATION

PIPE OLDER THAN

40-YEARS OLD

18Section 3. Existing Campus Conditions

Natural Gas (NG)

1. The campus has doubled its building square footage since opening in 1969.

As such, the campus-owned natural gas piping system was extended to the new buildings that were in the near proximity of the original campus-owned natural gas lines. As these buildings were added, the design engineers evaluated the capacity of the campus-owned natural gas lines and found the system to be adequate to serve the proposed building. Their assumptions were based on AGL supplying the campus with 10 psi gas pressure.

2. DSI engineers were informed by CSU Facilities that as extreme gas demands were placed on the campus’ natural gas system due to extreme weather conditions, generators and building heating systems begin to fail to operate properly. In the case of emergency generators, they would fail to start under these conditions. Because the existing piping with the lowering of the supply pressure due to extreme weather conditions caused the supply pressure to the campus to drop below the normal supply of 5 psi and the generator would not start, some of the building heating systems would drop offline. In this case, an emergency generator is a life safety piece of equipment. With the generator not starting this sets up a potential life safety condition.

EXISTING GAS SERVICES

N

4"

4"

4"

2"

2"

2" 2"

3"3"

4"

4" 4" 4"

6"

6"

Approximate limits of CLSU owned Gas service stops at gas valve. Does not cross lake dam.

LEGEND

CLSU owned gas service AGL owned gas service

Section 4. Recommendations

20Section 4. Recommendations

Domestic and Fire Water

The main concerns to be addressed by remediation to the Combined Domestic and Fire utility services are: increase the size of all the main trunks to a minimum of 8-inch diameter pipes to accommodate Master Plan building expansions; address critical issues currently ailing the campus, such as leaks and failing valves; and provide redundant looping with valves to provide options for future connections and isolation capabilities.

Currently, there are 6-inch laterals servicing multiple buildings. In one case, a 2-inch lateral is servicing a fire hydrant near Arbor Hall. If the 6-inch laterals are replaced with 8- or 10-inch lines, future building developments will have appropriately sized water trunks to connect to.

There are several issues on-site that have been labeled as critical and in need of repair as soon as possible. These issues include following:

a. Leaking at the valves and piping near the Central Chiller Plant.

b. Replacing three failing valves to the east of J.M. Baker University Center.

c. Replacing three failing valves to the east of Sanford Drive, south of Clayton State Blvd.

d. Replacing three failing valves to the west of College of Business, east of Clayton State Blvd.

e. No isolation valve for the Arts and Sciences Building.

f. No isolation valve for Lakeview Discovery and Science Center.

g. Replacing one failing valve near main located approximately 1,400 feet east of N. Lee Street.

h. Replacing failing isolation valve for Edgewater Hall.

RECOMMENDATIONS FOR DOMESTIC AND FIRE WATER SERVICES

N

199 6

2 SCIENCE BUILDING or ACADEMIC LIBRARY

3 LIBRARY

4 DINING / STUDENT LIBRARY

5 STUDENT LIFE

6 THEATER AND ACADEMIC

7 FACILITIES EXPANSION

9 SAC EXPANSION

17 RESIDENTIAL BUILDING

19 ATHLETICS / CONVOCATION BUILDING

BUILDING LEGEND

LEGEND

Existing Water routing Proposed Water routing

RECOMMENDATIONS FOR DOMESTIC/FIRE WATER CRITICAL ITEMS

N g c a b h f e d

REPLACE VALVE AND PIPE BY

NEW CHILLER PLANT

e f g h

REPLACE VALVE STEMS

REPLACE THREE VALVES

ADD NEW VALVES

ADD SHUTOFF VALVE FOR BUILDING

ADD SHUTOFF VALVE ON TEE

ADD VALVES ON OUTSIDE OF

VAULT

REPLACE ISOLATION VALVE

LEGEND

a b c d

21Section 4. Recommendations

Sanitary Sewer

The main concerns to be addressed by remediation to the Domestic Sanitary utility services are as follows: removing all clay pipe on Clayton State University’s campus and replacing with ductile iron pipe and address issues currently ailing the campus, such as root intrusions, failed pipe sections, and leading joints.

CCWA provides Standards Specifications for Sanitary Sewer Systems. Generally, clay pipes to be replaced will match existing invert elevations and locations. Ductile iron shall be used in any location where the sanitary line crosses the water or storm line. Ductile iron is the current standard for sanitary sewer installations.

Specific areas of issue noted by CSU staff include:

1. Two paved over manholes near J.M. Baker University Center and Edgewater Hall that need to be raised to existing grade.

2. Root intrusion near Athletics and Fitness Center.

3. Root intrusion near Magnolia Hall.

4. One paved over manhole near Paty Circle that needs to be raised to existing grade.

RECOMMENDATIONS FOR SANITARY SEWER SERVICES

N

9 6

LEGEND

Proposed 10" Sanitary service routing Proposed 12" Sanitary service routing

Existing Sanitary service Proposed 8" Sanitary service routing

SANITARY SERVICE TO

BE RE-ROUTED FOR

FUTURE

DEVELOPMENTS

22Section 4. Recommendations

Chilled Water & Hot Water (CHW/HW) Utility Vaults 1-4

1. Remove and replace all interior piping, fittings, valves, and thermal insulation.

2. Install new 24-inch x 24-inch x 24-inch deep sump with pump and motor. Run underground conduit and conductors to the nearest building panelboard with spare breakers.

3. Install two 36-diameter manway collars and lids. Installation shall be rated for ASHTO H-20 loading.

4. Install a permanently wall-mounted galvanized ladder under each access opening.

5. Install confined space signage at each manway access.

CHW/HW Distribution Piping:

1. Because all in-ground piping was not verified visually during the development of this UMP, it is recommended that test holes be conducted to confirm piping materials and performance evaluations developed. The analysis of this UMP was derived from record documents and interviews with Facilities staff and not visual inspections of the in-ground piping.

2. If the material is transite, then it should be replaced with a pre-engineered/pre-manufactured pipe system.

3. If the piping material is not transite, a more in-depth assessment shall be made to determine if the remaining service life and energy efficiency is practical for future use.

4. CHW/HW pipe exceeding 30 years of age should be replaced.

5. The DSI engineers were advised by Facilities staff that the CHW/ HW piping between vaults 1-4 was replaced during previous projects;

however, the DSI team was unable to locate verifiable record drawings. Its is suggested this run of piping be confirmed through test-holes early in the utility rehabilitation process.

23Section 4. Recommendations

RECOMMENDATIONS CHILLED AND HEATING WATER SERVICES

N

CW/HW LEGEND

EXISTING BUILDINGS

CW/HW MANHOLE

DESIGNATION

REPLACED HW/CW

PIPE

EXISTING HW/CW

PIPE

24Section 4. Recommendations

Natural Gas (NG)

1. The sizes of the installed natural gas system are adequate. There should not be a deficiency in NG to cause the campus hot water boilers to trip offline due to low gas pressure. The same holds true for the generators they should not have failed to start due to a lack of natural gas pressure.

Other possible causes of low natural gas pressure during winter conditions: (1) The existing piping system could have an obstruction in the piping from a partially closed valve; or (2) a collapsed/crushed pipe during construction of other projects.

2. AGL was approached and presented the conditions along with the anticipated additional natural gas loads to be added to this system as the University added new buildings according to the 2010 CSU master plan. In turn, AGL proposed taking over the natural gas service and installing a new piping system with all new meters and pressure regulators for each building.

AGL would be providing natural gas delivery piping.

3. The overall budget cost should CSU decide to accept the AGL proposal is approximately:

$1

4. CSU accepts the Atlanta Gas Light proposal to take over the existing campus-owned natural gas system and authorizes AGL to install a new piping system with new meters and pressure regulators at each building.

PROPOSED GAS SERVICES

N

LEGEND

Existing CLSU owned gas Existing AGL owned gas Proposed AGL routing

2 SCIENCE BUILDING or ACADEMIC LIBRARY

3 LIBRARY

4 DINING / STUDENT LIBRARY

5 STUDENT LIFE

6 THEATER AND ACADEMIC

7 FACILITIES EXPANSION

9 SAC EXPANSION

17 RESIDENTIAL BUILDING

19 ATHLETICS / CONVOCATION BUILDING

BUILDING LEGEND

Section 5. Strategies For Repairs

26Section 5. Strategies for Repairs

As an active campus, which could be severely impacted by a substantial utility infrastructure improvement process, this UMP offers the following strategies while implementing the recommendations detailed in this report.

The intent of these strategies is to provide considerations to reduce impact to daily Campus functions and overall rehabilitation costs.

Domestic and Fire Water

The main concerns to be addressed by the replacement of Domestic and Fire Water services are as follows: increase the size of all the main trunks to a minimum of 8-inch diameter pipes to accommodate Master Plan building expansions and fire protection minimum size standard, address critical issues currently ailing the campus such as leaks and failing valves, and providing redundant looping with valves to enable multiple options for future connections and isolation capabilities. When replacing the main laterals, the contractor should notify the facilities management team of service interruption.

1. Any domestic fire service pipe that is 6-inch or smaller is planned to be removed and replaced with a pipe no smaller than 8 inches.

These pipes will be installed in the same trench as the existing pipe at a depth of approximately four feet. The routing was planned to minimize the amount of impact on campus and closures required for installation. Because the buildings of the master plan have conceptual building limits, the routing locations were approximated using current existing building orientations and utility routes. Any future developments would need to revisit the domestic and fire routing to ensure any conflicts are addressed and connections provided to the future building site.

2. The main laterals to be replaced will be excavated to an appropriate depth and width and replaced with 8-inch ductile iron pipe. Water services depths are assumed to be at an approximate depth of 4’ of cover above the pipe.

a. Piping replacement shall be evaluated by the design team and CSU to determine if the area of utility replacement can be decommissioned for an extended time to allow for removal and re-installation, or if a temporary or parallel service will need to be installed.

b. If service is to remain in place during the construction activities, temporary surface piped connection or back fed service may be necessary to ensure water service is maintained the downstream buildings.

3. When replacing a faulty valve or fitting, contractor shall excavate an appropriately sized hole in the area where valve is to be replaced. An insertion tee can be utilized for install. CCWA’s detail 6.1 should be followed for any installed water valve. Contractor shall coordinate with CSU on the shutdown of water services or temporary connection to allow continued service to the building or downstream system.

4. When installing a new valve or fitting, contractor should excavate an appropriately sized area where valve is to be installed. An insertion tee can be utilized for install. CCWA’s detail 6.1 should be followed for any installed water valve. Contractor shall coordinate with CSU on the shutdown of water services or temporary connection to allow continued service to the building or downstream system.

5. Areas of domestic and fire water service replacement shall be backfilled and hardscape replaced matching the existing site conditions, materiality, and grade. Pavement shall be demolished and replaced up to the nearest expansion/construction joint.

27Section 5. Strategies for Repairs

Sanitary Sewer

The sanitary sewer currently installed on campus is VCP material with an approximate age of greater than 60 years old. As a result, the age and material of the sanitary sewer, it has been identified that all of the VCP sanitary sewer is to be replaced.

1. The Sanitary Sewer pipe is to follow along the same trench as the existing VCP pipes. All existing sanitary structures are to remain in place. The existing structures will be breached and the new pipes will be regrouted in at the same invert as the existing sanitary pipe.

Because the buildings of the master plan have conceptual building limits, the routing locations were approximated using current existing building orientations and sanitary pipes. Any future developments would need to revisit the sanitary pipe routing to ensure any conflicts are addressed and connections provided to the future building site.

2. The replacement of sanitary sewer shall be completed in an open cut trench, allowing the demolition, removal, and replacement of the old VCP system.

3. The existing manholes are anticipated to be reused if in good condition and not damaged during the pipe removal. Any brick manholes should be replaced with new concrete precast manholes.

Any manhole structure tops, inlets, and/or lids and frames that are in poor or damaged condition shall be replaced with new.

4. Building lateral connections to the sewer main are also recommended to provide a fully replaced, matching material sanitary system.

5. Contractor shall coordinate with CSU on areas of work and sequence of replacement to determine what buildings or systems may be affected. Temporary pumps should be employed to allow for the temporary blocking of sanitary sewer discharge from an upstream manhole and pumping sanitary flow beyond the area of work and into a downstream manhole location.

6. Possible alternative to open trench replacement is to utilize pipe bursting techniques. Pipe bursting employs an expanding head that is pushed though the old pipe, expanding, and busting the pipe as it moves. A replacement HDPE pipe is then pulled behind the bursting head replacing the pipe in sequence. Pipe bursting is completed in a “manhole-to-manhole” approach.

Chilled Water and Hot Water

The recommended strategy to address transite CHW/HW piping is to abandon in-place and install distribution piping per the recommendations.

Natural Gas (NG)

Assuming CSU accepts AGL’s offer to take ownership of CSU’s NG system, it is highly recommended CSU negotiate with AGL to include the following in their agreement:

1. CSU and/or its designate to review AGL’s proposed pipeline installation drawings.

2. AGL to add /change, line location and/or add valves at CSU’s request.

3. AGL to provide as-built drawings of the install gas piping.

4. AGL to replace landscape/hardscape back to original condition.

At the time of this UMP development, AGL indicated that the best estimate of completing the construction of a new natural gas system and providing service to the CSU buildings would be approximate summer of 2023. To help relieve the operational problems experienced by CSU during winter months, AGL should initiate an evaluation of all the equipment associated with the meter station for CSU’s owned natural gas system and make temporary changes before they complete construction. This should elevate winter supply problems CSU may experience until AGL can install a new natural gas distribution system.

Section 6. Budgeting & Phasing

29Section 6. Budgeting & Phasing

General DSI developed cost estimates to complete the recommendations described in this UMP. The total cost/budget amounts provided in this section include:

1. Direct Construction Costs*

2. Construction Management General Conditions and Fees

*The construction cost estimates were derived from historical cost data combined with contractor/vendor input reflective of current cost conditions. Cost Escalation of 10% for each phase is factored to account for general cost inflation and disruptions (i.e.: COVID-19) to labor, equipment, and material markets.

At the time of this report, there have been significant disruptions of the supply chain and increases in commodity cost.

Note: Design Fees, 3rd Party Inspections, Owner Contingencies, Surveying and Test Holes are not included.

Phasing DSI was tasked to provide phased strategy to accommodate the UMP’s recommendations based upon limited annual funding of $2,300,000 for Phase 1 (Under Contract) and $2,400,000 for subsequent phases.

30Section 6. Budgeting & Phasing

OVERALL CAMPUS CONSTRUCTION PHASING

N

PHASE LEGEND

PHASE 1

PHASE 2

PHASE 3

PHASE 4

UTILITY LEGEND

FIRE/DOMESTIC

WATER

SANITARY SEWER

HW/CW LINES

EXISTING BUILDINGS

PROPOSED BUILDINGS

31Section 6. Budgeting & Phasing

Phase 1 (Under Contract): Addresses the domestic/fire water and partial of the sewer critical items. During this Phase, we will explore the CHW/HW suspected transite materials through test holes/potholing noted in Phase 2. At the end of Phase 1, the domestic water and partial sewer critical items will be addressed. The known asbestos transite CHW/ HW piping scope of work will be replaced.

Although not addressed, CHW/HW piping scope of work (Phase 2) will be defined for the succeeding phase.

This Phase will be completed within the total amount of the current contract with DSI:

Construction Cost: $2,286,024

N

CAMPUS CONSTRUCTION - PHASE 1

UTILITY LEGEND

FIRE/DOMESTIC

WATER

SANITARY SEWER

HW/CW LINES

EXISTING BUILDINGS

PROPOSED BUILDINGS

PHASE LEGEND

PHASE 1

Description Quantity Cost Manhole Modifications 1 EA $13,448

Hot-CW Water Piping 1486 LF $848,641

Hot Water Valves 6 EA $9,682

Chilled Water 1578 LF $957,599

Chilled Water Valves 5 EA $8,069

8” DIP PVC 250 LF $66,610

Sewer 10”-12” 106 LF $51,737

Sewer Structures 1 EA $487

Valve 1 EA $6,480

Total Direct Construction Cost: $1,962,752

Construction Management Cost: $323,272

Estimated Stated Cost Limitation: $2,286,024

Phase 1 Scope Summary & Breakdown

32Section 6. Budgeting & Phasing

Phase 2: Addresses the transite CHW/HW water lines and utility vaults. This budget assumes the replacement of all transite piping between vaults 1-4 that is questionable.

Construction Cost: $2,396,338

N

CAMPUS CONSTRUCTION - PHASE 2

UTILITY LEGEND

FIRE/DOMESTIC

WATER

SANITARY SEWER

HW/CW LINES

EXISTING BUILDINGS

PROPOSED BUILDINGS

CONCEPTUAL SANITARY

SEWER

PHASE LEGEND

PHASE 2

Description Cost Hot-CW Water Piping $706,291

Domestic and Fire Water $228,908

Sanitary Sewer $1,156,759

Total Direct Construction Cost: $2,091,958

Construction Management Cost: $304,380

Estimated Stated Cost Limitation: $2,396,338

Phase 2 Scope Summary & Breakdown

33Section 6. Budgeting & Phasing

N

CAMPUS CONSTRUCTION - PHASE 3

UTILITY LEGEND

FIRE/DOMESTIC

WATER

SANITARY SEWER

EXISTING BUILDINGS

PROPOSED BUILDINGS

PHASE LEGEND

PHASE 3

Phase 3: Addresses the sewer that runs diagonally from north west to south east between building #12 - Lab Annex and building #14 - Lab Discovery Science.

Construction Cost: $2,396,013

Description Cost Sanitary Sewer $2,091,674

Total Direct Construction Cost: $2,091,674

Construction Management Cost: $304,339

Estimated Stated Cost Limitation: $2,396,013

Phase 3 Scope Summary & Breakdown

34Section 6. Budgeting & Phasing

Phase 4: Upgrades a large portion of the domestic and fire water system. Phase 4 upgrades the domestic & fire system in the north east portion of the campus near building #8 - Facilities Management. This Phase also upgrades the domestic & fire system in the south west and sewer system portion of the campus, near buildings #7 - Edgewater Hall, #16 - Library, and #1 - Athletics & Fitness building.

Phase 4 continues the upgrades the domestic & fire water system near building #3 - Arbor Hall and includes the Clayton County sewer system near building #3 and building #8

- Facilities Management. This phase was developed specifically to be able to negotiate with Clayton County Sewer Department to upgrade the sewer system at their expense.

The Master Plan does not believe Clayton County will or can provide funding to upgrade these sewers. Thus, the University system will have to provide funding for the upgrade.

Construction Cost: $2,399,590

N

CAMPUS CONSTRUCTION - PHASE 4

UTILITY LEGEND

FIRE/DOMESTIC

WATER

SANITARY SEWER

EXISTING BUILDINGS

PROPOSED BUILDINGS

PHASE LEGEND

PHASE 4

Description Cost Water 8” DIP Domestic Water $471,883

Sanitary Sewer $1,622,914

Total Direct Construction Cost: $2,094,797

Construction Management Cost: $304,793

Estimated Stated Cost Limitation: $2,399,590

Phase 4 Scope Summary & Breakdown

35Section 6. Budgeting & Phasing

Budget by Phase Stated Cost Limitation Notes

Phase 1 (Funded) $2,286,024 Critical Items (current DB contract with DSI)

Phase 2 $2,396,338 CHW/HW Upgrades pending exploratory work in Phase 1

Phase 3 $2,396,013 Upgrades Sanitary Sewer

Phase 4 $2,399,590 Upgrades Sanitary Sewer and Domestic Water & Fire

TOTAL: $9,477,965

TOTAL UNFUNDED: $7,191,941

Budget by Utility Stated Cost Limitation Notes

CSU Owned Natural Gas $1 AGL has offered to purchase CSU piping system and Install all new system

Chilled Water & Hot Water $2,949,127 Pending exploratory work during Phase 1A/B

Domestic and Fire Water $880,336 Upgrade domestic water to Meet Georgia and Clayton Co. Fire Codes

Sanitary Sewer $5,648,501 Upgrade aged sewer system

TOTAL: $9,477,965 Total Project Budget

Overall Project Budget: $ 9,477,965

Budgets

Clayton State University

Contact DSI Design & Construction

455 N. Milledge Ave.

Athens, GA 30601

706.208.9778 info@dsidesignconstruction.com