addendum 2 for 753-16-001wht micro sewage treatment …

SAM HOUSTON STATE UNIVERSITY Huntsville, Texas 77341

ADDENDUM 2 for 753-16-001WHT MICRO SEWAGE TREATMENT PLANT

The following are responses to questions or clarifications/corrections for the above referenced Request for Proposal. 1. Please confirm the BOD concentration of 2400 mg/l.

ANSWER: This is an error. We pulled grab samples on the Monday of 4 consecutive weeks. The high BOD was 256 ppm and the low was 89 ppm.

2. If the plant is to operate at 25% capacity, how long would a turn down to 25% flow last? ANSWER: Pretty much 24 hours per day.

3. Please define the influent ammonia concentration. ANSWER: We don’t have this information. A sample of the lab tests we conducted are attached, beginning on page 7.

4. Regarding page 13, Section D.1.5: “Influent limitations are less than 2400 mg/l for BOD and less than 600 mg/l for TSS.” a. Is this to mean that these numbers are to be used as the influent design basis for

the equipment?

ANSWER: YES, please note the correction outlined in the question one.

b. Please clarify as these concentrations would be too high for typical domestic wastewater from the residential units, education and sports facilities. To design a system for such influent strength would require a much larger footprint than the 13ft x 35ft specified.

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ANSWER: Provide the footprint that is required/needed for your proposal. It will be a part of the evaluation process.

c. Also there is no information as to influent concentration design basis for NH3-N. ANSWER: Please refer to the attached lab report for the information we do have.

5. Would an additional site visit be possible?

ANSWER: One additional site visit will be held. TUESDAY, FEBRUARY 2, 2016 at 11:00 a.m. CT EAST PLANT, 1821 BOBBY K. MARKS DRIVE HUNTSVILLE, TEXAS 77340 Please provide written notification of intent to attend and how many will be attending by Monday, February 1, 2016 at 11:00 a.m. CT to William H. Tidwell, by e-mail, [email protected] or fax at 936-294-1997.

6. What is the entire usable area for the unit? We need to make sure there is space for

screened solids to be contained/removed, room for sludge removal equipment and for effluent storage capacity. ANSWER: Provide the area you need to accomplish these tasks. Also provide the required path clearance needed for the typical vehicle to remove these solids.

7. What is the diameter of the manhole? Does the depth of the manhole extend below that of the invert depth of the 12” line? If so by how much? ANSWER: The diameter of the manhole is at a minimum 32”, the depth of the manhole is the invert of the 12” line, and the bottom of the manhole is BOP for 12” line.

8. If there is no adequate manhole depth, as referred in question #7, will the owner be responsible to construct a wet well in order to provide an adequate influent collection point? ANSWER: If that is required, then yes the Owner will be responsible for modifying the manhole based on requirements from vendor.

9. Section D.1.7: What is the pressure on the city supply line? ANSWER: Typical 35 psi to 60 psi.

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10. Section D.1.17: Can fiberglass be used if OSHA approved?

ANSWER: This will be considered but we don’t like the idea due to the fact erosion has always been an issue with fiberglass pipe.

11. Would it possible to get more precise values for: BOD and SST? ANSWER: We do not have other historical data for the influent. I have attached the complete lab report for the week with the highest BOD reading.

12. Does the University have complete water analysis, including: BOD, TSS and TDS from a certified laboratory that could be used on the design? If so does this include cations and anions? ANSWER: All water samples were done by a certified lab. Yes the report includes cations and anions.

13. Are there any cafeterias discharging on this sewer main? ANSWER: Yes

14. Are there any Oil & Grease traps discharging into this sewer main? ANSWER: Yes

15. What are the Total Dissolved Solid concentration (TDS) required in the Makeup Water for the Cooling Towers? ANSWER: Our goal is to be significantly better than typical city water as we want to increase the cycles on the cooling tower. Based on the projected purity of the water from the unit it will determine the level of tertiary filtration that will be installed.

16. Is there a complete Water Quality specification for the Cooling Tower makeup? ANSWER: Yes

17. What is the expected water depth inside the sewer main? ANSWER: This was measured over a 4 day period in December to simulate low flow conditions. The minimum water level above the 12” invert was 3 feet.

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18. What is the pipe diameter & material from the submersible pump to the Biological Wastewater Treatment Plant? ANSWER: To be provided by the vendor.

19. Please confirm that 37,500 GPD (26.04 GPM) will be the design flow? ANSWER: Yes this is confirmed. If this does not match exactly what the system can provide, please get as close this value as you can and make note of it in the proposal.

20. Please confirm if the flow inside the sewer will be available 24/7 an 365 days a year? ANSWER: Yes a. If not is there a flow variation graph indicating: Hourly, Daily, Weekly, and

Monthly variations? ANSWER: We do not have this level of historical data. We fully expect that if the sewer cannot provide this level of supply water, then the system will be turned down or secured. Please provide the level of turn down that your system can process and still provide the clarity of water that is close to design or normal.

21. Redundancy is one of the evaluation criteria points: a. On the pump for the feed of the system from the main only one pump is

requested. Is this correct or is a twin unit or a shelf spare required? ANSWER: We are asking for one pump. We will make the decision if on-shelf spare is necessary and purchase one if the decision is “yes”.

b. For the redundancy of the wastewater plant is the requirement for shelf spare pumps or for all of the pumps, blower and major components to have online twin alternating continue operations? ANSWER: Yes

c. To keep from overpricing these options can they be done in a bid add alternate as opposed to the base price? ANSWER: Yes, we will evaluate the systems based on value to SHSU not just the lowest price. If someone provides redundancy for a good value they will receive a higher score.

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22. A lift station is normally the feed for a system like this. Is that the intent? ANSWER: Yes a. If so is the redundancy also a requirement of this system?

ANSWER: No, we will determine if an on-the-shelf spare is necessary at the time of installation.

23. Are there any drawings available for: topography and unit locations for this project: manhole, assigned area for the Biological Wastewater treatment plant, cooling towers, etc.? ANSWER: This information will be limited at best. If this information is critical before final manufacturing, please include the cost for field verification in your pricing. Field verification of all site equipment and orientation is the responsibility of the vendor. a. Elevations and locations are requested so that we can properly size the pumps and

the plant? ANSWER: Time is of the essence for this project. The best methodology is to make some decent assumptions and put those limitations in your proposal.

24. Bid/Bond/Bid Check to be returned when? ANSWER: Upon completion of the RFP evaluation process.

25. As per our meeting, please confirm that: permitting, installation, civil works, piping and electrical related to this project will be done by Sam Houston State University. ANSWER: This is confirmed. However, please include the cost of construction oversite, engineering review and approval with the proposal. The vendor is to provide detailed installation instructions, connection diagrams, lifting/handling drawings, etc.… that is required to properly install. A list of deliverables will be a part of the final purchase documents.

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26. Please confirm if SHSU will be taking care of the Engineering related to unit location and installation. Including the following documents: lay out, cuts & profiles, electrical, service water, feed lines and discharges pipes. Sludge disposal methods. ANSWER: SHSU will be responsible for hiring the necessary contracting and engineering for this installation of this work. The vendor must include the cost of interfacing and working with the engineer of record for this project.

27. Are progressive payments allowed in the payment terms? ANSWER: Include any required progressive payments as part of the proposal. Please be aware that we are governed by the rules and regulations for a State Institution and there may limits placed on any progress payments.

28. If Cooling towers are offline, can the treated water be discharged back into the sewer? For how long? ANSWER: Yes, indefinitely.

29. Section D.2.6 calls for Manufacture to provide service beyond the one (1) year manufacture standard warranty. Is the intent to have every piece of the plant on a five (5) year warranty with all labor and equipment included? ANSWER: Yes a. Standard for us on this would be to provide priced list of spare parts after the

equipment is fully designed and the end user based on their needs and budget could choose what to purchase. During the service for the quarterly contract any items outside of the one year warranty would be quoted for repair or replacement and done after SHSU approval of the quote. Was this the intent of this Section? ( ANSWER: No, upon the completion of this project we want to sign an annual service contract for maintenance of this system that includes all parts and labor. The cost of this agreement will be included in the evaluation process. We do not have the expertise for this equipment on staff and this will not be large enough to justify hiring specialized personnel just for this equipment.

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LABORATORY ANAYLYSIS

7

15090977

10100 East Freeway, Suite 100, Houston, TX 77029 tel: 713-453-6060, fax: 713-453-6091, http://www.ablabs.com

Laboratory Analysis Report

Job ID :

Total Number of Pages: 13

City, State, Zip:

SHSU Effluent

Mike Walrath

Client Address:

Client Name:

Client Project Name :

P.O.#.:

Sample Collected By:

635 Westport Parkway Suite 312

ChemCal Inc.Report To :

Attn:

Grapevine, Texas, 76051

Date Collected: 09/21/15

Client Sample ID A&B Sample ID

A&B Labs has analyzed the following samples...

Matrix

SHSU Effluent 15090977.01Water

This report cannot be reproduced, except in full, without prior written permission of A&B Labs. Results shown relate only to the items tested. Samples are assumed to be inacceptable condition unless otherwise noted. Blank correction is not made unless otherwise noted. Air concentrations reported are based on field sampling information providedby client. Soil samples are reported on a wet weight basis unless otherwise noted. Uncertainty estimates are available on request.

10/7/2015

Title:

Released By:

Project Manager

Alisha Hughes

Date Received : 09/21/2015 13:00

This Laboratory is NELAP (T104704213-15-13) accredited. Effective: 04/01/2015; Expires: 03/31/2016

I am the laboratory manager, or his/her designee, and I am responsible for the release of this data package. This laboratory data package has beenreviewed and is complete and technically compliant with the requirements of the methods used, except where noted in the attached exception reports.I affirm, to the best of my knowledge that all problems/anomalies observed by this laboratory (and if applicable, any and all laboratories subcontractedthrough this laboratory) that might affect the quality of the data, have been identified in the Laboratory Review Checklist, and that no information ordata have been knowingly withheld that would affect the quality of the data.

Date:

Scope: Non-Potable Water, Drinking Water, Air, Solid, Biological Tissue, Hazardous Waste

Page 1 of 13

General Term Definition

BRL

Front-Wt

Below Reporting Limit

Front Weight

Back WeightBack-Wt

cfu colony-forming units

Conc. Concentration

D.F. Dilution Factor

LCS Laboratory Check Standard

LCSD Laboratory Check Standard Duplicate

MS Matrix Spike

MSD Matrix Spike Duplicate

Molecular WeightMW

RPD

ppm parts per million

Relative Percent Difference

TNTC Too numerous to count

Post-Wt

Pre-Wt Previous Weight

Q Qualifier

RegLimit Regulatory Limit

RptLimit Reporting Limit

T Time

Post Weight

surr Surrogate

SDL Sample Detection Limit

15090977

L A B O R A T O R Y T E R M A N D Q U A L I F I E R D E F I N I T I O N R E P O R T

Date:Job ID : 10/7/2015

Qualifier Definition

Sample was received and analyzed past holding time.H3

Not calculated. Sample concentration high. Spike out of linear range. Control limits do not apply."The sample randomly selcted asQC for this batch was not part of your project. Therefore, this sample matrix is not applicable to your project samples."

M6

Page 2 of 13

L A B O R A T O R Y T E S T R E S U L T S

Water

15090977.01

Sample Matrix

Job Sample ID:

AnalystDate TimeQReg LimitRpt LimitDFUnitsResultParameter/Test DescriptionTest Method

SHSU Effluent

Other Information:

Time Collected:

Client Sample ID:

Date Collected:

Mike WalrathAttn:

SHSU EffluentProject Name:

ChemCal Inc.Client Name:

Date15090977Job ID :

10/7/2015

09/21/15

11:00

Oil & Grease, Hexane ExtractablesEPA 1664B

SG09/23/15 07:302.881.15mg/L40.2Oil & Grease

Total Recoverable MetalsEPA 200.7

GG09/23/15 13:010.011mg/L0.280Aluminum

GG09/24/15 12:5010100mg/L56.372Calcium

GG09/23/15 13:010.011mg/L0.249Copper

GG09/23/15 13:010.021mg/L0.684Iron

GG09/23/15 13:010.011mg/L6.378Magnesium

GG09/24/15 13:07420mg/L21.967Potassium

GG09/24/15 12:5010100mg/L54.186Sodium

GG09/23/15 13:010.011mg/L0.175Zinc

AnionsEPA 300.0

XA09/22/15 23:010.11mg/L0.329Fluoride

XA09/22/15 23:17110mg/L70.8Chloride

XA09/22/15 23:010.11mg/LBRLNitrate-N

XA09/22/15 23:17110mg/L93.6Sulfate

Total Suspended SolidsSM 2540D

MAM09/23/15 10:255.002.00mg/L319.4TSS

Chlorine, as Total ResidualSM 4500Cl-G

AJ09/24/15 14:30H30.0330.031mg/LBRLChlorine, Free¹

AJ09/24/15 14:30H30.0330.031mg/LBRLChlorine, Total

Corrosivity, pHSM 4500H B

MVP09/23/15 11:16H3s.u.7.39pH

MVP09/23/15 11:16H3s.u.19.4Temperature when read, °C¹

Biochemical Oxygen DemandSM 5210B

CO09/21/15 16:2021mg/L256.00BOD

Chemical Oxygen DemandSM 5220D

AJ09/24/15 10:15101mg/L447.0000COD

¹-Parameter not available for accreditation

Page 3 of 13

Q U A L I T Y C O N T R O L C E R T I F I C A T E

Date :15090977Job ID :

Sgarcia

Samples in This QC Batch :

Qb15092301

Oil & Grease, Hexane Extractables

15090977.01

Reporting Units :

09/23/15QC Batch ID :

Method :

Created Date :

Analysis :

Created By :

mg/LEPA 1664B

10/7/2015

Prep Date : 09/23/15 07:24EPA 1664BPrep Method :PB15092301Sample Preparation : SgarciaPrep By :

QC Type: Method Blank

D.F. RptLimitParameter Result Units QualCAS #

mg/L 2.50BRL 1Oil & Grease

%RecoveryCtrlLimit

LCSDResult

LCSResult

RPDCtrlLimitRPD

LCSSpk Added

LCSD% Rec

LCS% RecParameter

LCSDSpk Added

QC Type: LCS and LCSD

Qual

1.191.540 78-11492.5 1137.0Oil & Grease 40 36.6

QC Type: MS and MSD

15090823.01QC Sample ID:

ParameterSampleResult

RPDCtrlLimit

MSResult

MSSpk Added RPD Qual

MS% Rec

MSDSpk Added

MSD% Rec

%RecCtrlLimit

MSDResult

BRLOil & Grease 40 10140.3 78-114

Refer to the Definition page for terms.

Page 4 of 13



MMaldonado


Qb15092314

Total Suspended Solids

15090977.01

Reporting Units :


Method :

Created Date :

Analysis :

Created By :

mg/LSM 2540D

10/7/2015

Prep Date : 09/23/15 10:20SM 2540DPrep Method :PB15092312Sample Preparation : MMaldonadoPrep By :



mg/L 2.50BRL 1TSS

QC Type: Duplicate


Parameter UnitsSampleResult QualRPD

RPDCtrlLimit

QCSampleResult

mg/LTSS 21.3 10.9 2019.1

%RecoveryCtrlLimit

LCSDResult

LCSResult

RPDCtrlLimitRPD

LCSSpk Added

LCSD% Rec

LCS% RecParameter

LCSDSpk Added


Qual

500 72-10892.9464.5TSS


Page 5 of 13



Ggorane


Qb15092339

Total Recoverable Metals

15090977.01

Reporting Units :


Method :

Created Date :

Analysis :

Created By :

mg/LEPA 200.7

10/7/2015

Prep Date : 09/22/15 10:37EPA 200.7Prep Method :PB15092315Digestion : EperezPrep By :



mg/L 0.01BRL 1Aluminum 7429-90-5

mg/L 0.1BRL 1Calcium 7440-70-2

mg/L 0.01BRL 1Copper 7440-50-8

mg/L 0.02BRL 1Iron 7439-89-6

mg/L 0.01BRL 1Magnesium 7439-95-4

mg/L 0.2BRL 1Potassium 7440-09-7

mg/L 0.1BRL 1Sodium 7440-23-5

mg/L 0.01BRL 1Zinc 7440-66-6

%RecoveryCtrlLimit

LCSDResult

LCSResult

RPDCtrlLimitRPD

LCSSpk Added

LCSD% Rec

LCS% RecParameter

LCSDSpk Added


Qual

0.61081 85-115109 201.085Aluminum 1 1.079

1.91031 85-115101 201.009Calcium 1 1.028

0.91071 85-115108 201.075Copper 1 1.065

0.81001 85-115101 201.013Iron 1 1.005

01041 85-115104 201.041Magnesium 1 1.042

0.510510 85-115105 2010.508Potassium 10 10.459

2.31061 85-115109 201.087Sodium 1 1.062

0.91051 85-115104 201.037Zinc 1 1.046

QC Type: MS and MSD



RPDCtrlLimit

MSResult


MS% Rec

MSDSpk Added

MSD% Rec

%RecCtrlLimit

MSDResult

0.85Aluminum 1 1131.985 75-125

78.30Calcium 1 N/C M6N/C 75-125

0.02Copper 1 1011.030 75-125

0.18Iron 1 1011.188 75-125

7.62Magnesium 1 84.88.468 75-125

16.10Potassium 10 N/C M6N/C 75-125

260.00Sodium 1 N/C M6N/C 75-125

0.04Zinc 1 1081.115 75-125


Page 6 of 13



Xan


Qb15092350

Anions

15090977.01

Reporting Units :


Method :

Created Date :

Analysis :

Created By :

mg/LEPA 300.0

10/7/2015

Prep Date : 09/22/15 08:00EPA 300.0Prep Method :PB15092223Sample Preparation : LwangPrep By :



mg/L 0.1BRL 1Chloride 16887-00-6

mg/L 0.1BRL 1Fluoride

mg/L 0.1BRL 1Nitrate-N

mg/L 0.1BRL 1Sulfate

%RecoveryCtrlLimit

LCSDResult

LCSResult

RPDCtrlLimitRPD

LCSSpk Added

LCSD% Rec

LCS% RecParameter

LCSDSpk Added


Qual

7.899.91 90-110108 201.08Chloride 1 0.999

7.1911 90-11097.7 200.977Fluoride 1 0.91

1.793.51 90-11091.9 200.919Nitrate-N 1 0.935

1971 90-11098 200.98Sulfate 1 0.97

QC Type: MS and MSD



RPDCtrlLimit

MSResult


MS% Rec

MSDSpk Added

MSD% Rec

%RecCtrlLimit

MSDResult

81.4Chloride 1 N/A M6N/A 80-120

0.5Fluoride 1 901.40 80-120

0.47Nitrate-N 1 911.38 80-120

38.7Sulfate 1 N/A M6N/A 80-120


Page 7 of 13



MVPatel


Qb15092366

Corrosivity, pH

15090977.01

Reporting Units :


Method :

Created Date :

Analysis :

Created By :

s.u.SM 4500H B

10/7/2015

QC Type: Duplicate



RPDCtrlLimit

QCSampleResult

s.u.pH 7.57 0 207.57

ToleranceLCSDResult

LCSResult

RPDCtrlLimitRPD

LCSAssignedParameter

LCSDAssigned


Qual

4.0 3.95-4.054.05pH


Page 8 of 13



Ajohn


Qb15092463

Chemical Oxygen Demand

15090977.01

Reporting Units :


Method :

Created Date :

Analysis :

Created By :

mg/LSM 5220D

10/7/2015

Prep Date : 09/24/15 10:00SM 5220DPrep Method :PB15092428Sample Preparation : AjohnPrep By :



mg/L 10BRL 1COD

%RecoveryCtrlLimit

LCSDResult

LCSResult

RPDCtrlLimitRPD

LCSSpk Added

LCSD% Rec

LCS% RecParameter

LCSDSpk Added


Qual

198.7300 80-12097.7 20293COD 300 296

QC Type: MS and MSD



RPDCtrlLimit

MSResult


MS% Rec

MSDSpk Added

MSD% Rec

%RecCtrlLimit

MSDResult

53.0000COD 400 105472 80-120


Page 9 of 13



Ajohn


Qb15092479

Chlorine, as Total Residual

15090977.01

Reporting Units :


Method :

Created Date :

Analysis :

Created By :

mg/LSM 4500Cl-G

10/7/2015



mg/L 0.03BRL 1Chlorine, Free

mg/L 0.03BRL 1Chlorine, Total

QC Type: Duplicate



RPDCtrlLimit

QCSampleResult

mg/LChlorine, Free BRL 20BRL

mg/LChlorine, Total BRL 20BRL

%RecoveryCtrlLimit

LCSDResult

LCSResult

RPDCtrlLimitRPD

LCSSpk Added

LCSD% Rec

LCS% RecParameter

LCSDSpk Added


Qual

1 79-113830.83Chlorine, Total


Page 10 of 13



CObuekwe


Qb15092819

Biochemical Oxygen Demand

15090977.01

Reporting Units :


Method :

Created Date :

Analysis :

Created By :

mg/LSM 5210B

10/7/2015

Prep Date : 09/21/15 16:20SM 5210BPrep Method :PB15092813Sample Preparation : CObuekwePrep By :



mg/L 2BRL 1BOD

QC Type: Duplicate



RPDCtrlLimit

QCSampleResult

mg/LBOD BRL 20BRL

%RecoveryCtrlLimit

LCSDResult

LCSResult

RPDCtrlLimitRPD

LCSSpk Added

LCSD% Rec

LCS% RecParameter

LCSDSpk Added


Qual

6.497200 83.8-114.291 20182.00BOD 200 194.00


Page 11 of 13

Sample Condition Checklist

pH Paper ID : 58809 Thermometer ID : 140539697

Sample pH : <2 COD, Metals Temperature : 29.1+0.7cf=29.8°C

Client Name : ChemCal Inc.

Time Received : 1:00PMDate Received : 09/21/2015 A&B JobID : 15090977

Comments : Include actions taken to resolve discrepancies/problem:

Has client been contacted about sub-out18

X Sample accepted.17.

X VOA vials completely filled.16.

X Samples were received within the hold time.15.

X Sample volume is sufficient for analyses requested.14.

X Bottle count on C-O-C matches bottles found.13.

X Sample ID labels match C-O-C ID's12.

X All samples were logged or labeled.11.

X Sample(s) were received with proper preservative10.

X Sample(s) were received in appropriate container(s).9.

Matrix:

Sludge Cassette Tube BulkSolidLiquidSoilWater Badge Food Other8.

X Sample containers arrived intact. (If no comment).7.

X Sample(s) received with signed sample custody seal.6.

X C-O-C signed and dated.5.

X Sample(s) received with chain-of-custody.4.

X If yes, ice in cooler.3.

X Sample(s) in a cooler.2.

X Cooler seal present and signed.1.

N/ANoYesCheck Points

Received by : Check in by/date : AHall / 09/21/2015AHall

Phone : www.ablabs.com 713-453-6060

Page 13 of 13

addendum 2 for 753-16-001wht micro sewage treatment …

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