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Home My WebLink AboutSix Range Condos - DIPRA AnalysisCivil Engineering ● Geotechnical Engineering ● Land Surveying ● Construction Services ALLIED ENGINEERING 32 Discovery Dr. Bozeman, MT 59718 Ph: (406) 582-0221 www.alliedengineering.com January 31, 2022 The Paine Group c/o Meredith Hermann 402 E. Main St, Suite 3, Bozeman, MT, 59715 meredith@painegroup.com (Issued via email only) RE: Soil Corrosivity Testing – Six Range Condominiums Bozeman, Montana Dear Ms. Hermann: Please find enclosed an electronic PDF copy of our soil corrosivity testing and DIPRA analysis for the above-referenced project. Based on typical water main depth (5.0 to 8.0 feet), the pipe will primarily run through sandy gravel. The soils across the site were consistent, with shallow gravels extending to the bottom of all boreholes. Trench backfill during water main installation will consist of native sandy gravel. One composite sample was collected from across the site at typical water main depth for corrosivity potential for ductile iron pipe. The composite sample consisted of sandy gravel and was formed from the combination of split spoon samples from all ten boreholes across the site at typical water main depth. The composite sample was tested by Energy Laboratories in Helena, Montana for resistivity, sulfides, chlorides, oxidation-reduction potential, and pH. Based on laboratory testing results, the composite sample was non-corrosive. Please refer to the attached laboratory testing results for details. According to the DIPRA Decision Model, the likelihood score is the deciding factor for most projects regarding whether a soil is corrosive and to what extent corrosion protection is recommended. Consequence scores (the second input to the decision matrix) must reach a medium to high threshold value before they affect the corrosivity and protections assessment. Since consequence scores are typically low, they usually have no effect, as in this case. For this project, the composite sample scored a consequence score of 11. Based on the DIPRA document, the use of V-Bio Enhanced Polyethylene Encasement is recommended for corrosion protection for likelihood scores from 21 to 40. For scores of 41 or greater, zinc-coated piping, or cathodic protection is recommended in addition to V-Bio Enhanced Polyethylene Encasement. For this project, the composite sample scored a likelihood score of 13.5, therefore no V-Bio Enhanced Polyethylene Encasement is required. Please refer to the attached DIPRA Analysis for details. FIGURECivil Engineering Geotechnical EngineeringLand Surveying 32 DISCOVERY DRIVE . BOZEMAN, MT 59718PHONE (406) 582-0221 . FAX (406) 582-5770www.alliedengineering.com SIX RANGE CONDOMINIUMS BOREHOLE LOCATION MAP BOZEMAN, MONTANA 3 N MOISTURE CONTENT DETERMINATION (ASTM D-2216) Project: Six Range CondominiumsProject Number: 21-079 Sample Identification: See Below Soil Classification: Varies Date Sampled: 5/6/2021 Date Tested: 5/10/2021 Tested By: HT, ZL, HD Sample Identification:S1-A S1-B S1-C S2-A S2-B S2-C Exploration Location:BH-1 BH-1 BH-1 BH-2 BH-2 BH-2 Sample Depth (ft):0-1.5 2-3.5 4-5.5 0-1.5 2-3.5 4-5.5 Container Number:S O M U GG R Weight of Container:50.55 48.98 50.56 51.13 48.24 50.61 Container + Wet Soil:179.41 135.57 190.20 203.49 158.20 152.26 Container + Dry Soil:160.83 123.27 186.11 178.32 148.01 148.71 Weight of Water:18.58 12.30 4.09 25.17 10.19 3.55 Weight of Dry Soil:110.28 74.29 135.55 127.19 99.77 98.10 Moisture Content:16.8%16.6%3.0%19.8%10.2%3.6% Sample Identification:S3-A S3-B S3-C S4-A S4-B S4-C Exploration Location:BH-3 BH-3 BH-3 BH-4 BH-4 BH-4 Sample Depth (ft):0-1.5 2-3.5 4-5.5 0-1.5 2-3.5 4-5.5 Container Number:CC HH DD EE T Y Weight of Container:49.76 48.35 48.76 48.99 51.58 50.88 Container + Wet Soil:161.24 184.01 181.60 171.72 180.86 136.28 Container + Dry Soil:138.23 179.60 177.59 147.22 176.11 134.29 Weight of Water:23.01 4.41 4.01 24.50 4.75 1.99 Weight of Dry Soil:88.47 131.25 128.83 98.23 124.53 83.41 Moisture Content:26.0%3.4%3.1%24.9%3.8%2.4% Reviewed By: 32 Discovery Drive Bozeman, MT 59718 Phone (406) 582-0221Fax (406) 582-5770 MOISTURE CONTENT DETERMINATION (ASTM D-2216) Project: Six Range CondominiumsProject Number: 21-079 Sample Identification: See Below Soil Classification: Varies Date Sampled: 5/6/2021 Date Tested: 5/10/2021 Tested By: HT, ZL, HD Sample Identification:S5-A S5-B S5-C S6-A S6-B S6-C Exploration Location:BH-5 BH-5 BH-5 BH-6 BH-6 BH-6 Sample Depth (ft):0-1.5 2-3.5 4-5.5 0-1.5 2-3.5 4-5.5 Container Number:V AA P W Q Z Weight of Container:51.04 49.02 49.27 50.52 51.08 49.51 Container + Wet Soil:175.10 174.40 175.25 178.62 181.48 203.39 Container + Dry Soil:156.17 170.79 171.68 155.90 175.14 196.52 Weight of Water:18.93 3.61 3.57 22.72 6.34 6.87 Weight of Dry Soil:105.13 121.77 122.41 105.38 124.06 147.01 Moisture Content:18.0%3.0%2.9%21.6%5.1%4.7% Sample Identification:S7-A S7-B S7-C S8-A S8-B S8-C Exploration Location:BH-7 BH-7 BH-7 BH-8 BH-8 BH-8 Sample Depth (ft):0-1.5 2-3.5 4-5.5 0-1.5 2-3.5 4-5.5 Container Number:BB C E LL JJ B Weight of Container:48.47 31.76 31.64 31.06 30.93 31.58 Container + Wet Soil:157.72 137.62 113.64 61.77 108.33 89.59 Container + Dry Soil:137.84 128.80 111.42 57.25 105.23 87.06 Weight of Water:19.88 8.82 2.22 4.52 3.10 2.53 Weight of Dry Soil:89.37 97.04 79.78 26.19 74.30 55.48 Moisture Content:22.2%9.1%2.8%17.3%4.2%4.6% Reviewed By: 32 Discovery Drive Bozeman, MT 59718 Phone (406) 582-0221Fax (406) 582-5770 MOISTURE CONTENT DETERMINATION (ASTM D-2216) Project: Six Range CondominiumsProject Number: 21-079 Sample Identification: See Below Soil Classification: Varies Date Sampled: 5/6/2021 Date Tested: 5/10/2021 Tested By: HT, ZL, HD Sample Identification:S9-A S9-B S9-C S10-A S10-B Exploration Location:BH-9 BH-9 BH-9 BH-10 BH-10 Sample Depth (ft):0-1.5 2-3.5 4-5.5 0-1.5 2-3.5 Container Number:H K OO G D Weight of Container:31.56 31.73 31.04 31.56 31.76 Container + Wet Soil:117.90 112.68 120.58 112.44 140.96 Container + Dry Soil:102.80 110.14 112.84 96.26 137.78 Weight of Water:15.10 2.54 7.74 16.18 3.18 Weight of Dry Soil:71.24 78.41 81.80 64.70 106.02 Moisture Content:21.2%3.2%9.5%25.0%3.0% Sample Identification: Exploration Location: Sample Depth (ft): Container Number: Weight of Container: Container + Wet Soil: Container + Dry Soil: Weight of Water: Weight of Dry Soil: Moisture Content: Reviewed By: 32 Discovery Drive Bozeman, MT 59718 Phone (406) 582-0221Fax (406) 582-5770 ANALYTICAL SUMMARY REPORT The analyses presented in this report were performed by Energy Laboratories, Inc., 3161 E. Lyndale Ave., Helena, MT 59604, unless otherwise noted. Any exceptions or problems with the analyses are noted in the Laboratory Analytical Report, the QA/QC Summary Report, or the Case Narrative. Any issues encountered during sample receipt are documented in the Work Order Receipt Checklist. The results as reported relate only to the item(s) submitted for testing. This report shall be used or copied only in its entirety. Energy Laboratories, Inc. is not responsible for the consequences arising from the use of a partial report. If you have any questions regarding these test results, please contact your Project Manager. Lab ID Client Sample ID Collect Date Receive Date Matrix Test Report Approved By: H21050337-001 Composite Sample, all boreholes 05/07/21 12:00 05/14/21 Soil Anions, Water ExtractableOxidation Reduction PotentialpH, 1:X Water ExtractableDI Water Soil Extract ASA10-3ResistivitySoil Preparation USDA1Sulfide, Methylene Blue Colorimetric Allied Engineering Services Inc Project Name:21-079 W. Babcock Apartments Work Order:H21050337 32 S Discovery Dr Bozeman, MT 59718-6958 June 03, 2021 Energy Laboratories Inc Helena MT received the following 1 sample for Allied Engineering Services Inc on 5/14/2021 for analysis. Page 1 of 10 Digitally signed bySkyler T. PesterDate: 2021.06.03 15:57:04 -06:00 Project:21-079 W. Babcock Apartments CLIENT:Allied Engineering Services Inc Work Order:H21050337 CASE NARRATIVE 06/03/21Report Date: Tests associated with analyst identified as ELI-B were subcontracted to Energy Laboratories, 1120 S. 27th St., Billings, MT, EPA Number MT00005. Page 2 of 10 LABORATORY ANALYTICAL REPORT Client:Allied Engineering Services Inc Project:21-079 W. Babcock Apartments Lab ID:H21050337-001 Client Sample ID:Composite Sample, all boreholes Collection Date:05/07/21 12:00 Matrix:Soil Report Date:06/03/21 DateReceived:05/14/21 Prepared by Helena, MT Branch Analyses Result Units Analysis Date / ByRLMethod MCL/ QCLQualifiers 1:X SOIL:WATER 05/20/21 09:05 / swj0.1s.u.8.5pH, 1:2 ASA10-3 WATER EXTRACTABLE 05/21/21 13:52 / JAR1mg/kg6Chloride, 1:2 E300.0 PHYSICAL PROPERTIES 06/02/21 12:00 / eli-b23mV270Oxidation-Reduction Potential A2580 BM INORGANICS H 06/02/21 18:58 / eli-b0.04mg/L0.06Sulfide A4500-S D RESISTIVITY OF SOIL 05/25/21 10:53 / swj1ohm-cm9630Resistivity A2510 B Report Definitions: RL - Analyte Reporting Limit MCL - Maximum Contaminant Level QCL - Quality Control Limit ND - Not detected at the Reporting Limit (RL) H - Analysis performed past the method holding time Page 3 of 10 Client:Allied Engineering Services Inc Work Order:H21050337 QA/QC Summary Report 06/03/21Report Date: Analyte Result %REC RPDLow Limit High Limit RPDLimitRLUnits QualCount Prepared by Helena, MT Branch Method:A2510 B Batch: R165206 Lab ID:H21050337-001ADUP 05/25/21 10:53Sample Duplicate Run: SOIL EC_210525A Resistivity 101.0 2.49410ohm-cm Qualifiers: RL - Analyte Reporting Limit ND - Not detected at the Reporting Limit (RL) Page 4 of 10 Client:Allied Engineering Services Inc Work Order:H21050337 QA/QC Summary Report 06/03/21Report Date: Analyte Result %REC RPDLow Limit High Limit RPDLimitRLUnits QualCount Prepared by Helena, MT Branch Method:A2580 BM Batch: B_R361665 Lab ID:LCS1 06/02/21 11:56Laboratory Control Sample Run: SUB-B361665 Oxidation-Reduction Potential 99 95 105233mV Lab ID:H21050337-001B 06/02/21 12:08Sample Duplicate Run: SUB-B361665 Oxidation-Reduction Potential 104.2282mV Qualifiers: RL - Analyte Reporting Limit ND - Not detected at the Reporting Limit (RL) Page 5 of 10 Client:Allied Engineering Services Inc Work Order:H21050337 QA/QC Summary Report 06/03/21Report Date: Analyte Result %REC RPDLow Limit High Limit RPDLimitRLUnits QualCount Prepared by Helena, MT Branch Method:A4500-S D Batch: B_R361718 Lab ID:MBLK 06/02/21 18:58Method Blank Run: SUB-B361718 Sulfide 0.0100.02 mg/L Lab ID:LCS 06/02/21 18:58Laboratory Control Sample Run: SUB-B361718 Sulfide 107 85 1150.0400.254 mg/L Lab ID:B21060172-001DMS 06/02/21 18:58Sample Matrix Spike Run: SUB-B361718 Sulfide 99 70 1300.202.47 mg/L Lab ID:B21060172-001DMSD 06/02/21 18:58Sample Matrix Spike Duplicate Run: SUB-B361718 Sulfide 100 70 130 200.20 1.12.49 mg/L Lab ID:H21050337-001B 06/02/21 18:58Sample Duplicate Run: SUB-B361718 Sulfide 200.040 3.50.0637 mg/L Qualifiers: RL - Analyte Reporting Limit ND - Not detected at the Reporting Limit (RL) Page 6 of 10 Client:Allied Engineering Services Inc Work Order:H21050337 QA/QC Summary Report 06/03/21Report Date: Analyte Result %REC RPDLow Limit High Limit RPDLimitRLUnits QualCount Prepared by Helena, MT Branch Method:ASA10-3 Analytical Run: SOIL PH METER - ORION A211_210525A Lab ID:ICV_1_210519_1 05/20/21 08:51Initial Calibration Verification Standard pH, 1:2 100 98.6 101.40.107.02 s.u. Lab ID:CCV_1_210519_1 05/20/21 08:52Continuing Calibration Verification Standard pH, 1:2 100 98.6 101.40.107.01 s.u. Lab ID:CCV1_1_210519_1 05/20/21 08:53Continuing Calibration Verification Standard pH, 1:2 100 97.5 102.50.104.00 s.u. Lab ID:ICV_1_210521_1 05/21/21 09:27Initial Calibration Verification Standard pH, 1:2 100 98.6 101.40.107.03 s.u. Lab ID:ICV_1_210524_1 05/24/21 11:47Initial Calibration Verification Standard pH, 1:2 100 98.6 101.40.107.03 s.u. Method:ASA10-3 Batch: 56316 Lab ID:LCS-56316 05/20/21 08:55Laboratory Control Sample Run: SOIL PH METER - ORION A2 pH, 1:2 99 95 1050.108.25 s.u. Lab ID:H21050337-001ADUP 05/20/21 09:05Sample Duplicate Run: SOIL PH METER - ORION A2 pH, 1:2 200.10 1.08.63 s.u. Qualifiers: RL - Analyte Reporting Limit ND - Not detected at the Reporting Limit (RL) Page 7 of 10 Client:Allied Engineering Services Inc Work Order:H21050337 QA/QC Summary Report 06/03/21Report Date: Analyte Result %REC RPDLow Limit High Limit RPDLimitRLUnits QualCount Prepared by Helena, MT Branch Method:E300.0 Batch: 56316 Lab ID:MB-56316 05/21/21 12:12Method Blank Run: IC METROHM_210521A Chloride, 1:2 0.008NDmg/kg Lab ID:LCS-56316 05/21/21 12:26Laboratory Control Sample Run: IC METROHM_210521A Chloride, 1:2 117 70 1301.0181mg/kg Lab ID:H21050337-001ADUP 05/21/21 14:07Sample Duplicate Run: IC METROHM_210521A Chloride, 1:2 201.0 4.35.46 mg/kg Lab ID:H21050337-001AMS 05/21/21 14:21Sample Matrix Spike Run: IC METROHM_210521A Chloride, 1:2 100 90 1101.0508mg/kg Qualifiers: RL - Analyte Reporting Limit ND - Not detected at the Reporting Limit (RL) Page 8 of 10 Shipping container/cooler in good condition? Custody seals intact on all shipping container(s)/cooler(s)? Custody seals intact on all sample bottles? Chain of custody present? Chain of custody signed when relinquished and received? Chain of custody agrees with sample labels? Samples in proper container/bottle? Sample containers intact? Sufficient sample volume for indicated test? All samples received within holding time?(Exclude analyses that are considered field parameterssuch as pH, DO, Res Cl, Sulfite, Ferrous Iron, etc.) Container/Temp Blank temperature: Water - VOA vials have zero headspace? Water - pH acceptable upon receipt? Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No No No No No No No No No No No No R £ £ £ R R £ R R R R £ £ £ £ £ £ R £ £ £ £ £ £ Not Present Not Present Not Present £ R R No VOA vials submitted Not Applicable R R 22.1°C No Ice 5/14/2021Jessica C. Smith Priority US Mail wjj Date Received: Received by: Login completed by: Carrier name: BL2000\sdull 5/19/2021 Reviewed by: Reviewed Date: Contact and Corrective Action Comments: Date on COC is 5/6 + 5/7 2021 and time on COC is varies. ID on COC is Composite Sample, all boreholes - ID on sample is 21-079 W. Babcock Apts. Mulitple depths listed on sample. Used ID and latest date from COC and estimated time in the laboratory. JCS 05/14/2021 Temp Blank received in all shipping container(s)/cooler(s)?Yes No£R Not Applicable £ Lab measurement of analytes considered field parameters that require analysis within 15 minutes of sampling such as pH, Dissolved Oxygen and Residual Chlorine, are qualified as being analyzed outside of recommended holding time. Solid/soil samples are reported on a wet weight basis (as received) unless specifically indicated. If moisture corrected, data units are typically noted as –dry. For agricultural and mining soil parameters/characteristics, all samples are dried and ground prior to sample analysis. Radiochemical precision results represent a 2-sigma Total Measurement Uncertainty. Standard Reporting Procedures: Work Order Receipt Checklist Allied Engineering Services Inc H21050337 Page 9 of 10 Page 10 of 10