HomeMy WebLinkAboutAS-1789_20326_CA_MMPE_20230414
WithersRavenel
Our People. Your Success.
115 MacKenan Drive | Cary, NC 27511
t: 919.469.3340 | f: 919.467.6008 | www.withersravenel.com | License No. F‐1479
Asheville | Cary | Charlotte | Greensboro | Lumberton | Pittsboro | Raleigh | Southern Pines | Wilmington
April 14, 2023
State of North Carolina
Department of Environment Quality State Lead Program Division of Waste Management‐Underground Storage Tank Section 1646 Mail Service Center
Raleigh, North Carolina 27699‐1646
Attn: Ms. Sharon Ghiold
RE: LETTER REPORT – MOBILE MULTI‐PHASE EXTRACTION EVENT
Foothills Service Center
312 East Union Street Morganton, Burke County, North Carolina Groundwater Incident Number: 20326 UST Number: AS‐1789
WR Project Number: 23‐0307‐B
Ms. Ghiold:
WithersRavenel, Inc. (WR) has completed this Letter Report to document the Air Sparge
Enhanced Mobile Multi‐Phase Extraction (AS/MMPE) event described in task authorization (TA)
TA‐01 for the above referenced site approved on February 17, 2023 under North Carolina Department of Environmental Quality (NCDEQ) Contract #N70522‐C. WR mobilized to the subject site on March 6, 2023 and March 13, 2023, for the purposes of performing two AS/MMPE events on select monitoring wells and recovery well RW‐1 and utilizing air sparge
wells AS‐1, AS‐2, and AS‐3 for air injection. The site location is depicted on Figure 1 and site
features including monitoring well locations are depicted on Figure 2.
Sparge‐Enhanced MMPE Event
Prior to performance of the March 2023 sparge enhanced MMPE event, WR completed and
submitted a “Deemed as Permitted” Notification of Intent (NOI) to construct or operate injection wells to the NCDEQ‐Division of Water Resources (DWR). NCDEQ approved the NOI with Permit # WI0100677 on March 3, 2023. A copy of the NOI and approval, as well as an Injection Event Record for the March 2023 events, are included in Appendix A.
WR personnel, along with Advanced Environmental Services (Advanced) mobilized to the site on March 6, 2023, for the purposes of performing a 96‐hour AS/MMPE event. WR and Advanced re‐mobilized to the site on March 13, 2023 to perform an additional 96‐hour AS/MMPE event. This event was initiated to reduce the presence of light non‐aqueous phase liquid (LNAPL) in
monitoring well MW‐1 and compounds exceeding the Gross Contamination Levels (GCLs) within
wells MW‐7 and MW‐8.
WithersRavenel
Our People. Your Success.
Letter Report ‐ MMPE Event Foothills Service Center (Inc. 20326) April 2023 Page 2 of 4
For both AS/MMPE events, Advanced connected to air sparge wells AS‐1, AS‐2, and AS‐3 and utilized an air compressor to deliver air into each air sparge well. Advanced installed a 1‐in diameter PVC stingers into well MW‐1, and RW‐1 at a depth approximately 1‐ft beneath the measured groundwater elevation on March 6, 2023. Then, on March 9, 2023, the stinger
placement was shifted to RW‐1, MW‐7 and MW‐8. The second week involved stinger
placements in RW‐1, MW‐1, MW‐7, and MW‐8 for the entire week. These stingers were plumbed at the surface to a 2.0‐in diameter chemical resistant flexible hose, which was connected to a vacuum truck servicing the vacuum/pressure regenerative blower housed in the equipment trailer. Recovered fluids were stored within a 6,000‐gallon tanker trailer. For
induction of air for the purposes of sparging, ½‐in diameter PVC tubing was placed within AS‐1,
AS‐2, and AS‐3 at depths beneath the measured groundwater elevation. This tubing was plumbed to a compressor which injected air into air sparge wells AS‐1, AS‐2, and AS‐3.
Following the setup for each event, the AS/MMPE system was started and operated
continuously for a period of 96‐hours to induce movement and recovery of total fluids from RW‐
1, MW‐1, MW‐7, and MW‐8. Advanced personnel monitored the performance of the AS/MMPE system over the course of each event, adjusting the stinger depths and optimizing recovery as necessary.
March 6, 2023 AS/MMPE Event:
WR gauged site monitoring wells on March 6, 2023, prior to the performance of remedial actions
at the location. Gauging of groundwater elevations within wells MW‐1, MW‐7, MW‐8 and RW‐1
showed the following:
Well ID Depth to
LNAPL
Depth to Water
(feet below top of
casing)
Well Depth
(feet below top
of casing)
LNAPL
Thickness
RW‐1 ‐‐‐ 26.55 40.00 ‐‐‐
MW‐1 26.50 26.51 30.00 0.01
MW‐7 ‐‐‐ 26.75 33.00 ‐‐‐
MW‐8 ‐‐‐ 25.90 33.00 ‐‐‐
Throughout the course of the first AS/MMPE event, effluent emissions ranged from 26,000
parts per million (ppm) to 100,000 ppm. In completion of the AS/MMPE event, a total of 4,688‐
gallons of contaminated water was recovered and based on mass removal calculations, a total of
900.26‐pounds or 146.34‐gallons of volatile organic compounds (VOCs) were removed as vapor.
WithersRavenel
Our People. Your Success.
Letter Report ‐ MMPE Event Foothills Service Center (Inc. 20326) April 2023 Page 3 of 4
After completion of the AS/MMPE event on March 10, 2023, Advanced disconnected the
AS/MMPE setup at each well location. WR personnel gauged MW‐7, MW‐8 and RW‐1 during
the water recovery after removal of the stingers and found the water levels to be the following:
RW ‐1 = 27.00‐ft,
MW‐1 = 29.44‐ft,
MW‐7 = 28.85‐ft, and
MW‐8 = 26.45‐ft.
March 13, 2023 AS/MMPE Event:
WR gauged site monitoring wells on March 13, 2023, prior to the performance of remedial
actions at the location. Gauging of groundwater elevations within wells MW‐1, MW‐7, MW‐8
and RW‐1 showed the following:
Well ID Depth to
LNAPL
Depth to Water
(feet below top of
casing)
Well Depth
(feet below top
of casing)
LNAPL
Thickness
RW‐1 26.50 26.60 30.00 0.10
MW‐1 26.40 26.50 30.00 0.10
MW‐7 ‐‐‐ 26.70 33.00 ‐‐‐
MW‐8 ‐‐‐ 25.70 33.00 ‐‐‐
Throughout the course of the second AS/MMPE event, effluent emissions ranged from 8,000
ppm to 28,000 ppm. In completion of the AS/MMPE event, a total of 4,433‐gallons of
contaminated water was recovered and based on mass removal calculations, a total of 270.98‐
pounds or 44.05‐gallons of VOCs were removed as vapor. A sheen of LNAPL was observed in
the tankers at the conclusion of the event.
After completion of the second AS/MMPE event on March 17, 2023, Advanced dismantled the
AS/MMPE system to prepare for removal. WR personnel gauged MW‐1, MW‐3, and MW‐4
during the water recovery after removal of the stingers and found the water levels to be the
following:
RW ‐1 = 28.01‐ft,
MW‐1 = 28.80‐ft,
MW‐7 = 28.02‐ft, and
MW‐8 = 26.95‐ft.
No LNAPL was measured within the wells following completion of the second AS/MMPE event.
Field notes from the event are included in Appendix B. The manifest, disposal documents, and
the MMPE report are included in Appendix C.
WithersRavenel
Our People. Your Success.
Letter Report ‐ MMPE Event Foothills Service Center (Inc. 20326) April 2023 Page 4 of 4
WR appreciates the opportunity to be of service to the Federal & State Lead Program. Should
you have any questions regarding the attached, please do not hesitate to contact Elizabeth Allyn at (919) 469‐3340.
Cordially,
WithersRavenel
Steven Powell
Field Geologist II, Environmental
Elizabeth A. Allyn, P.G. Environmental Project Geologist II
WithersRavenel
Our People. Your Success
FIGURES
PU
M
P
I
S
L
A
N
D
EAST UNION STREET
WHITE STREETEXCAVATION 3EXCAVATION 4EXCAVATION 1EXCAVATION 2MW-1MW-3MW-2MW-7MW-8MW-4(S&ME)MW-5(S&ME)MW-6(S&ME)AS-3AS-1AS-2RW-1DCV
EAA
DRAWN BY:
03/06/2023 23-0307-B
2
SCALE:FIGURE NO.:
PROJECT NO.:DATE:APPROVED BY:SITE MAPWithersRavenel
Engineers | Planners | Surveyors
115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340license #: F-1479 | www.withersravenel.com
1"=20 '201040FORMER FOOTHILLS SERVICE CENTERTF20326
312 EAST UNION STREETMORGANTON, BURKE COUNTY, NCLEGENDNOTES: 1.) 2018 AERIAL OBTAINED FROM NC ONEMAP.
WithersRavenel
Our People. Your Success
TABLE
Easting Northing7/14/2020‐‐‐25.99‐‐‐74.011/20/2021‐‐‐24.96‐‐‐75.041/24/2022 (pre‐MMPE) 27.6027.990.3972.341/28/2022 (post‐MMPE)‐‐‐29.62‐‐‐70.383/2/2022 27.39 27.80 0.41 72.552/1/2023 26.96 27.05 0.09 73.032/2/2023 27.05 27.00 0.05 73.042/27/2023‐‐‐26.50‐‐‐73.503/6/2023 (pre‐MMPE) 26.5026.510.0173.503/10/2023 (post‐MMPE) 26.6626.850.1973.313/13/2023 (pre‐MMPE) 26.4026.500.1073.593/17/2023 (pre‐MMPE)‐‐‐28.80‐‐‐71.207/14/2020‐‐‐25.82‐‐‐73.701/20/2021‐‐‐24.61‐‐‐74.911/24/2022‐‐‐27.41‐‐‐72.113/2/2022‐‐‐27.03‐‐‐72.492/1/202326.5772.952/2/2023‐‐‐26.60‐‐‐72.922/27/2023‐‐‐26.10‐‐‐73.423/6/2023 (pre‐MMPE)‐‐‐26.10‐‐‐73.423/10/2023 (post‐MMPE)‐‐‐26.15‐‐‐73.373/13/2023 (pre‐MMPE)‐‐‐26.05‐‐‐73.473/17/2023 (pre‐MMPE)‐‐‐26.05‐‐‐73.477/14/2020‐‐‐26.34‐‐‐73.481/20/2021‐‐‐25.34‐‐‐74.481/24/2022‐‐‐28.10‐‐‐71.723/2/2022‐‐‐27.82‐‐‐72.002/1/202327.3372.492/2/2023‐‐‐27.35‐‐‐72.472/27/2023‐‐‐26.85‐‐‐72.973/6/2023 (pre‐MMPE)‐‐‐26.85‐‐‐72.973/10/2023 (post‐MMPE)‐‐‐26.86‐‐‐72.963/13/2023 (pre‐MMPE)‐‐‐26.75‐‐‐73.073/17/2023 (pre‐MMPE)‐‐‐26.80‐‐‐73.02Well Coordinates(NC State Plane NAD 83 Feet)Date Water Level Measured7/14/20201203216.30 737879.64230230Screened Interval (feet)Depth‐to‐LNAPL from Top‐of‐Casing(feet)15Foothills Service CenterIncident # 20326Depth‐to‐Water from Top‐of‐Casing(feet)Date Installed MW‐3Morganton, Burke County, NCTotal Depth (feet)Top‐of‐Casing Elevation (feet)Well Casing Depth (feet)15 15‐30TABLE B‐7312 East Union StreetMONITORING WELL CONSTRUCTION INFORMATIONWell Casing Diameter(inches)LNAPL Thickness(feet)Monitoring Well IDGroundwaterElevation (feet)MW‐27/14/202099.821203275.25 737852.2799.5215‐30MW‐1737925.291203268.02100.0015‐30153027/14/2020Page 1 of 2
Easting NorthingWell Coordinates(NC State Plane NAD 83 Feet)Date Water Level MeasuredScreened Interval (feet)Depth‐to‐LNAPL from Top‐of‐Casing(feet)Foothills Service CenterIncident # 20326Depth‐to‐Water from Top‐of‐Casing(feet)Date Installed Morganton, Burke County, NCTotal Depth (feet)Top‐of‐Casing Elevation (feet)Well Casing Depth (feet)TABLE B‐7312 East Union StreetMONITORING WELL CONSTRUCTION INFORMATIONWell Casing Diameter(inches)LNAPL Thickness(feet)Monitoring Well IDGroundwaterElevation (feet)MW‐41/30/20232 35.5 15 20.5-35.5NM2/1/2023‐‐‐26.10‐‐‐NM‐‐‐ ‐‐‐MW‐51/30/20232 30.5 15 15.5-30.5NM2/1/2023‐‐‐20.67‐‐‐NM‐‐‐ ‐‐‐MW‐61/30/20232 28.7 15 13.7-28.7NM2/1/2023‐‐‐20.05‐‐‐NM‐‐‐ ‐‐‐2/2/2023‐‐‐27.25‐‐‐72.252/27/2023‐‐‐26.75‐‐‐72.753/6/2023 (pre‐MMPE)‐‐‐26.75‐‐‐72.753/10/2023 (post‐MMPE)‐‐‐28.85‐‐‐70.653/13/2023 (pre‐MMPE)‐‐‐26.70‐‐‐72.803/17/2023 (pre‐MMPE)‐‐‐28.02‐‐‐71.482/2/2023‐‐‐26.50‐‐‐72.292/27/2023‐‐‐25.85‐‐‐72.943/6/2023 (pre‐MMPE)‐‐‐25.90‐‐‐72.893/10/2023 (post‐MMPE)‐‐‐26.45‐‐‐72.343/13/2023 (pre‐MMPE)‐‐‐25.70‐‐‐73.093/17/2023 (pre‐MMPE)‐‐‐26.95‐‐‐71.843/6/2023 (pre‐MMPE)‐‐‐26.55‐‐‐NM‐‐‐‐‐‐3/10/2023 (post‐MMPE)‐‐‐27.00‐‐‐NM3/13/2023 (pre‐MMPE) 26.4026.500.10NM3/17/2023 (pre‐MMPE)28.01‐‐‐NM‐‐‐ ‐‐‐AS‐12/27/2023 2 40 35 35‐40 Not Measured 3/6/2023‐‐‐26.76‐‐‐NM‐‐‐‐‐‐AS‐22/27/2023 2 40 35 35‐40 Not Measured 3/6/2023‐‐‐26.50‐‐‐NM‐‐‐‐‐‐AS‐32/27/2023 2 40 35 35‐40 Not Measured 3/6/2023‐‐‐26.00‐‐‐NM‐‐‐‐‐‐Notes:42/27/20233) Groundwater elevation adjusted for LNAPL is [Top of Casing Elevation ‐ Depth to Water] + [LNAPL Thickness * 0.8581]1) Well Top of Casing (TOC) elevation based on arbitrary 100.00 ft benchmark established at TOC for MW‐199.5018‐33 98.79184) NM = Not measured..RW‐1Not Measured25‐402540MW‐7MW‐82/2/20232/2/2023233332‐‐‐‐‐‐18 18‐332) LNAPL = Light Non‐Aqueous Phase Liquid.‐‐‐‐‐‐Page 2 of 2
WithersRavenel
Our People. Your Success
ATTACHMENT A
NOTICE OF INTENT FOR AIR SPARGE ENHANCED MMPE
Submit the original of this form to the Division of Water Resources within 30 days of injection. Form UIC-IER Attn: UIC Program, 1636 Mail Service Center, Raleigh, NC 27699-1636, Phone No. 919-807-6464 Rev. 3-1-2016
North Carolina Department of Environmental Quality – Division of Water Resources INJECTION EVENT RECORD (IER)
Permit Number__WI0100677___________
1. Permit Information NCDEQ/DWM/UST/Trust Fund Branch Permittee
__Foothills Service Center_________________ Facility Name 312 East Union St., Morganton, Burke County Facility Address (include County) 2. Injection Contractor Information WithersRavenel during MMPE by Advanced Environmental Services Injection Contractor / Company Name
Street Address_115 MacKenan Drive___________
___Cary _____NC_________27511______ City State Zip Code
(_919_) __469-3340_ Area code – Phone number 3. Well Information Number of wells used for injection ___3________
Well IDs____AS-1, AS-2, AS-3________________ Were any new wells installed during this injection event? Yes No If yes, please provide the following information:
Number of Monitoring Wells _______________
Number of Injection Wells_____3_____________
Type of Well Installed (Check applicable type): Bored Drilled Direct-Push Hand-Augured Other (specify) ________ Please include a copy of the GW-1 form for each well installed.
Were any wells abandoned during this injection event? Yes No If yes, please provide the following information: Number of Monitoring Wells _______________ Number of Injection Wells__________________
Please include a copy of the GW-30 for each well abandoned.
4. Injectant Information ___Air____________________________________
Injectant(s) Type (can use separate additional sheets if necessary Concentration ___________________________ If the injectant is diluted please indicate the source dilution fluid.____________________________ Total Volume Injected (gal)____________________ Volume Injected per well (gal)_________________
5. Injection History
Injection date(s)__3/6/2023 – 3/17/2023________ Injection number (e.g. 3 of 5)___1___ ______
Is this the last injection at this site? Yes No I DO HEREBY CERTIFY THAT ALL THE INFORMATION ON THIS FORM IS CORRECT TO THE BEST OF MY KNOWLEDGE AND THAT THE INJECTION WAS PERFORMED WITHIN THE STANDARDS LAID OUT IN THE PERMIT. ________________________________________________4/7/2023______ SIGNATURE OF INJECTION CONTRACTOR DATE ____Elizabeth A. Allyn__________________________________________ PRINT NAME OF PERSON PERFORMING THE INJECTION
WELL CONSTRUCTION RECORD (GW-1) For Internal Use Only:
Form GW-1 North Carolina Department of Environmental Quality - Division of Water Resources Revised 6-6-2018
1.Well Contractor Information:
Well Contractor Name
NC Well Contractor Certification Number
Company Name
2.Well Construction Permit #: List all applicable well construction permits (i.e. UIC, County, State, Variance, etc.)
3.Well Use (check well use):
Water Supply Well: □Agricultural □Municipal/Public □Geothermal (Heating/Cooling Supply) □Residential Water Supply (single) □Industrial/Commercial □Residential Water Supply (shared) □Irrigation □Wells > 100,000 GPDNon-Water Supply Well: □Monitoring □Recovery
Injection Well: □Aquifer Recharge □Groundwater Remediation □Aquifer Storage and Recovery □Salinity Barrier □Aquifer Test □Stormwater Drainage □Experimental Technology □Subsidence Control □Geothermal (Closed Loop)□Tracer □Geothermal (Heating/Cooling Return) □Other (explain under #21 Remarks)
4. Date Well(s) Completed: Well ID#
5a. Well Location:
Facility/Owner Name Facility ID# (if applicable)
Physical Address, City, and Zip
County Parcel Identification No. (PIN)
5b. Latitude and longitude in degrees/minutes/seconds or decimal degrees: (if well field, one lat/long is sufficient)
N W
6.Is(are) the well(s): □Permanent or □Temporary
7.Is this a repair to an existing well: □Yes or □No
If this is a repair, fill out known well construction information and explain the nature of the repair under #21 remarks section or on the back of this form.
8. For Geoprobe/DPT or Closed-Loop Geothermal Wells having the same construction, only 1 GW-1 is needed. Indicate TOTAL NUMBER of wellsdrilled:
9. Total well depth below land surface: (ft.) For multiple wells list all depths if different (example- 3@200’ and 2@100′)
10.Static water level below top of casing: (ft.) If water level is above casing, use “+”
11. Borehole diameter: (in.)
12. Well construction method:(i.e. auger, rotary, cable, direct push, etc.)
FOR WATER SUPPLY WELLS ONLY:
13a. Yield (gpm) Method of test:
13b. Disinfection type: Amount:
14. WATER ZONES
FROM TO DESCRIPTION
ft. ft.
ft. ft.
15. OUTER CASING (for multi-cased wells) OR LINER (if applicable)FROM TO DIAMETER THICKNESS MATERIAL ft. ft. in.
16. INNER CASING OR TUBING (geothermal closed-loop)FROM TO DIAMETER THICKNESS MATERIAL
ft. ft. in.
ft. ft. in.
17. SCREENFROM TO DIAMETER SLOT SIZE THICKNESS MATERIAL
ft. ft. in.
ft. ft. in.
18. GROUT
FROM TO MATERIAL EMPLACEMENT METHOD & AMOUNT
ft. ft.
ft. ft.
ft. ft.
19. SAND/GRAVEL PACK (if applicable) FROM TO MATERIAL EMPLACEMENT METHOD
ft. ft.
ft. ft.
20. DRILLING LOG (attach additional sheets if necessary) FROM TO DESCRIPTION (color, hardness, soil/rock type, grain size, etc.)
ft. ft.
ft. ft.
ft. ft.
ft. ft.
ft. ft.
ft. ft.
ft. ft.
21. REMARKS
22.Certification:
Signature of Certified Well Contractor Date
By signing this form, I hereby certify that the well(s) was (were) constructed in accordance with 15A NCAC 02C .0100 or 15A NCAC 02C .0200 Well Construction Standards and that a copy of this record has been provided to the well owner.
23.Site diagram or additional well details:You may use the back of this page to provide additional well construction info (add 'See Over' in Remarks Box). You may also attach additional pages if necessary.
24.SUBMITTAL INSTRUCTIONS
Submit this GW-1 within 30 days of well completion per the following:
24a. For All Wells: Original form to Division of Water Resources (DWR), Information Processing Unit, 1617 MSC, Raleigh, NC 27699-1617
24b. For Injection Wells: Copy to DWR, Underground Injection Control (IUC) Program, 1636 MSC, Raleigh, NC 27699-1636
24c. For Water Supply and Open-Loop Geothermal Return Wells: Copy to the county environmental health department of the county where installed
24d. For Water Wells producing over 100,000 GPD: Copy to DWR, CCPCUA Permit Program, 1611 MSC, Raleigh, NC 27699-1611
WELL CONSTRUCTION RECORD (GW-1) For Internal Use Only:
Form GW-1 North Carolina Department of Environmental Quality - Division of Water Resources Revised 6-6-2018
1.Well Contractor Information:
Well Contractor Name
NC Well Contractor Certification Number
Company Name
2.Well Construction Permit #: List all applicable well construction permits (i.e. UIC, County, State, Variance, etc.)
3.Well Use (check well use):
Water Supply Well: □Agricultural □Municipal/Public □Geothermal (Heating/Cooling Supply) □Residential Water Supply (single) □Industrial/Commercial □Residential Water Supply (shared) □Irrigation □Wells > 100,000 GPDNon-Water Supply Well: □Monitoring □Recovery
Injection Well: □Aquifer Recharge □Groundwater Remediation □Aquifer Storage and Recovery □Salinity Barrier □Aquifer Test □Stormwater Drainage □Experimental Technology □Subsidence Control □Geothermal (Closed Loop)□Tracer □Geothermal (Heating/Cooling Return) □Other (explain under #21 Remarks)
4. Date Well(s) Completed: Well ID#
5a. Well Location:
Facility/Owner Name Facility ID# (if applicable)
Physical Address, City, and Zip
County Parcel Identification No. (PIN)
5b. Latitude and longitude in degrees/minutes/seconds or decimal degrees: (if well field, one lat/long is sufficient)
N W
6.Is(are) the well(s): □Permanent or □Temporary
7.Is this a repair to an existing well: □Yes or □No
If this is a repair, fill out known well construction information and explain the nature of the repair under #21 remarks section or on the back of this form.
8. For Geoprobe/DPT or Closed-Loop Geothermal Wells having the same construction, only 1 GW-1 is needed. Indicate TOTAL NUMBER of wellsdrilled:
9. Total well depth below land surface: (ft.) For multiple wells list all depths if different (example- 3@200’ and 2@100′)
10.Static water level below top of casing: (ft.) If water level is above casing, use “+”
11. Borehole diameter: (in.)
12. Well construction method:(i.e. auger, rotary, cable, direct push, etc.)
FOR WATER SUPPLY WELLS ONLY:
13a. Yield (gpm) Method of test:
13b. Disinfection type: Amount:
14. WATER ZONES
FROM TO DESCRIPTION
ft. ft.
ft. ft.
15. OUTER CASING (for multi-cased wells) OR LINER (if applicable)FROM TO DIAMETER THICKNESS MATERIAL ft. ft. in.
16. INNER CASING OR TUBING (geothermal closed-loop)FROM TO DIAMETER THICKNESS MATERIAL
ft. ft. in.
ft. ft. in.
17. SCREENFROM TO DIAMETER SLOT SIZE THICKNESS MATERIAL
ft. ft. in.
ft. ft. in.
18. GROUT
FROM TO MATERIAL EMPLACEMENT METHOD & AMOUNT
ft. ft.
ft. ft.
ft. ft.
19. SAND/GRAVEL PACK (if applicable) FROM TO MATERIAL EMPLACEMENT METHOD
ft. ft.
ft. ft.
20. DRILLING LOG (attach additional sheets if necessary) FROM TO DESCRIPTION (color, hardness, soil/rock type, grain size, etc.)
ft. ft.
ft. ft.
ft. ft.
ft. ft.
ft. ft.
ft. ft.
ft. ft.
21. REMARKS
22.Certification:
Signature of Certified Well Contractor Date
By signing this form, I hereby certify that the well(s) was (were) constructed in accordance with 15A NCAC 02C .0100 or 15A NCAC 02C .0200 Well Construction Standards and that a copy of this record has been provided to the well owner.
23.Site diagram or additional well details:You may use the back of this page to provide additional well construction info (add 'See Over' in Remarks Box). You may also attach additional pages if necessary.
24.SUBMITTAL INSTRUCTIONS
Submit this GW-1 within 30 days of well completion per the following:
24a. For All Wells: Original form to Division of Water Resources (DWR), Information Processing Unit, 1617 MSC, Raleigh, NC 27699-1617
24b. For Injection Wells: Copy to DWR, Underground Injection Control (IUC) Program, 1636 MSC, Raleigh, NC 27699-1636
24c. For Water Supply and Open-Loop Geothermal Return Wells: Copy to the county environmental health department of the county where installed
24d. For Water Wells producing over 100,000 GPD: Copy to DWR, CCPCUA Permit Program, 1611 MSC, Raleigh, NC 27699-1611
WELL CONSTRUCTION RECORD (GW-1) For Internal Use Only:
Form GW-1 North Carolina Department of Environmental Quality - Division of Water Resources Revised 6-6-2018
1.Well Contractor Information:
Well Contractor Name
NC Well Contractor Certification Number
Company Name
2.Well Construction Permit #: List all applicable well construction permits (i.e. UIC, County, State, Variance, etc.)
3.Well Use (check well use):
Water Supply Well: □Agricultural □Municipal/Public □Geothermal (Heating/Cooling Supply) □Residential Water Supply (single) □Industrial/Commercial □Residential Water Supply (shared) □Irrigation □Wells > 100,000 GPDNon-Water Supply Well: □Monitoring □Recovery
Injection Well: □Aquifer Recharge □Groundwater Remediation □Aquifer Storage and Recovery □Salinity Barrier □Aquifer Test □Stormwater Drainage □Experimental Technology □Subsidence Control □Geothermal (Closed Loop)□Tracer □Geothermal (Heating/Cooling Return) □Other (explain under #21 Remarks)
4. Date Well(s) Completed: Well ID#
5a. Well Location:
Facility/Owner Name Facility ID# (if applicable)
Physical Address, City, and Zip
County Parcel Identification No. (PIN)
5b. Latitude and longitude in degrees/minutes/seconds or decimal degrees: (if well field, one lat/long is sufficient)
N W
6.Is(are) the well(s): □Permanent or □Temporary
7.Is this a repair to an existing well: □Yes or □No
If this is a repair, fill out known well construction information and explain the nature of the repair under #21 remarks section or on the back of this form.
8. For Geoprobe/DPT or Closed-Loop Geothermal Wells having the same construction, only 1 GW-1 is needed. Indicate TOTAL NUMBER of wellsdrilled:
9. Total well depth below land surface: (ft.) For multiple wells list all depths if different (example- 3@200’ and 2@100′)
10.Static water level below top of casing: (ft.) If water level is above casing, use “+”
11. Borehole diameter: (in.)
12. Well construction method:(i.e. auger, rotary, cable, direct push, etc.)
FOR WATER SUPPLY WELLS ONLY:
13a. Yield (gpm) Method of test:
13b. Disinfection type: Amount:
14. WATER ZONES
FROM TO DESCRIPTION
ft. ft.
ft. ft.
15. OUTER CASING (for multi-cased wells) OR LINER (if applicable)FROM TO DIAMETER THICKNESS MATERIAL ft. ft. in.
16. INNER CASING OR TUBING (geothermal closed-loop)FROM TO DIAMETER THICKNESS MATERIAL
ft. ft. in.
ft. ft. in.
17. SCREENFROM TO DIAMETER SLOT SIZE THICKNESS MATERIAL
ft. ft. in.
ft. ft. in.
18. GROUT
FROM TO MATERIAL EMPLACEMENT METHOD & AMOUNT
ft. ft.
ft. ft.
ft. ft.
19. SAND/GRAVEL PACK (if applicable) FROM TO MATERIAL EMPLACEMENT METHOD
ft. ft.
ft. ft.
20. DRILLING LOG (attach additional sheets if necessary) FROM TO DESCRIPTION (color, hardness, soil/rock type, grain size, etc.)
ft. ft.
ft. ft.
ft. ft.
ft. ft.
ft. ft.
ft. ft.
ft. ft.
21. REMARKS
22.Certification:
Signature of Certified Well Contractor Date
By signing this form, I hereby certify that the well(s) was (were) constructed in accordance with 15A NCAC 02C .0100 or 15A NCAC 02C .0200 Well Construction Standards and that a copy of this record has been provided to the well owner.
23.Site diagram or additional well details:You may use the back of this page to provide additional well construction info (add 'See Over' in Remarks Box). You may also attach additional pages if necessary.
24.SUBMITTAL INSTRUCTIONS
Submit this GW-1 within 30 days of well completion per the following:
24a. For All Wells: Original form to Division of Water Resources (DWR), Information Processing Unit, 1617 MSC, Raleigh, NC 27699-1617
24b. For Injection Wells: Copy to DWR, Underground Injection Control (IUC) Program, 1636 MSC, Raleigh, NC 27699-1636
24c. For Water Supply and Open-Loop Geothermal Return Wells: Copy to the county environmental health department of the county where installed
24d. For Water Wells producing over 100,000 GPD: Copy to DWR, CCPCUA Permit Program, 1611 MSC, Raleigh, NC 27699-1611
Deemed Permitted GW Remediation NOI Rev. 1-06-2021 Page 1
North Carolina Department of Environmental Quality – Division of Water Resources
Print Clearly or Type Information. Illegible Submittals Will Be Returned As Incomplete. DATE: February 21 , 20_23___ PERMIT NO. (to be filled in by DWR) A. WELL TYPE TO BE CONSTRUCTED OR OPERATED (1) X Air Injection Well……………………………..…Complete sections B through F, K, N
(2) Aquifer Test Well……………………….………..Complete sections B through F, K, N
(3) Passive Injection System…………………..……..Complete sections B through F, H-N
(4) Small-Scale Injection Operation………………….Complete sections B through N
(5) Pilot Test………………………………………….Complete sections B through N
(6) Tracer Injection Well………………………….….Complete sections B through N
B. STATUS OF WELL OWNER: State Government
C. WELL OWNER(S) – State name of Business/Agency, and Name and Title of person delegated authority to sign on behalf of the business or agency: Name(s): NCDEQ-DWM, UST Section, Federal & State Lead Program (TF#20326); Attn: Sharon Ghiold
Mailing Address: 1646 Mail Service Center
City: Raleigh State: NC Zip Code: 27699-1646 County: Wake
Day Tele No.: 919-707-8166 Cell No.: NA
EMAIL Address: sharon.ghiold@ncdenr.gov Fax No.: 919-571-4718
NOTIFICATION OF INTENT (NOI) TO CONSTRUCT OR OPERATE INJECTION WELLS
The following are “permitted by rule” and do not require an individual permit when constructed in accordance
with the rules of 15A NCAC 02C .0200 (NOTE: This form must be received at least 14 DAYS prior to injection) AQUIFER TEST WELLS (15A NCAC 02C .0220) These wells are used to inject uncontaminated fluid into an aquifer to determine aquifer hydraulic characteristics.
IN SITU REMEDIATION (15A NCAC 02C .0225) or TRACER WELLS (15A NCAC 02C .0229):
1) Passive Injection Systems - In-well delivery systems to diffuse injectants into the subsurface. Examples include
ORC socks, iSOC systems, and other gas infusion methods (Note: Injection Event Records (IER) do not need to be submitted for replacement of each sock used in ORC systems).
2) Small-Scale Injection Operations – Injection wells located within a land surface area not to exceed 10,000 square feet for the purpose of soil or groundwater remediation or tracer tests. An individual permit shall be required for test or treatment areas exceeding 10,000 square feet.
3) Pilot Tests - Preliminary studies conducted for the purpose of evaluating the technical feasibility of a remediation strategy in order to develop a full scale remediation plan for future implementation, and where the surface area of the injection zone wells are located within an area that does not exceed five percent of the land surface above the known extent of groundwater contamination. An individual permit shall be required to conduct more than one pilot test on any separate groundwater contaminant plume.
4) Air Injection Wells - Used to inject ambient air to enhance in-situ treatment of soil or groundwater.
Deemed Permitted GW Remediation NOI Rev. 1-06-2021 Page 2
D. PROPERTY OWNER(S) (if different than well owner/applicant)
Name and Title: Phillip Lookadoo – Director of Development & Design Services
Company Name City of Morganton (Redevelopment Commission)
Mailing Address: P.O. Box 3448
City: Morganton State: __NC__ Zip Code: 28680-3448 County: Burke
Day Tele No.: 828-438-5270 Cell No.:
EMAIL Address: plookadoo@ci.morganton.nc.us Fax No.:
E. PROJECT CONTACT (Typically Environmental Engineering Firm) Name and Title: Elizabeth A. Allyn, P.G., Environmental Project Geologist II
Company Name WithersRavenel, Inc.
Mailing Address: 115 MacKenan Drive
City: Cary State: _NC__ Zip Code: 27511 County: Wake
Day Tele No.: 919-469-3340 Cell No.: 919-418-0279
EMAIL Address: lallyn@withersravenel.com Fax No.: 919-467-6008
F. PHYSICAL LOCATION OF WELL SITE (1) Facility Name & Address: Foothills Service Center; 312 E. Union St., NCDEQ Incident #20326
City: Morganton County: Burke Zip Code: 28655
(2) Geographic Coordinates: Latitude**: 35.747895°
Longitude**: -81.685441°
Reference Datum: Google Earth Accuracy: +/- 5m
Method of Collection: Google Earth
**FOR AIR INJECTION AND AQUIFER TEST WELLS ONLY: A FACILITY SITE MAP WITH PROPERTY
BOUNDARIES MAY BE SUBMITTED IN LIEU OF GEOGRAPHIC COORDINATES.
G. TREATMENT AREA Land surface area of contaminant plume: square feet
Land surface area of inj. well network: __ square feet (< 10,000 ft2 for small-scale injections)
Percent of contaminant plume area to be treated: _ (must be < 5% of plume for pilot test injections) H. INJECTION ZONE MAPS – Attach the following to the notification. (1) Contaminant plume map(s) with isoconcentration lines that show the horizontal extent of the contaminant plume in soil and groundwater, existing and proposed monitoring wells, and existing and proposed injection wells; and
(2) Cross-section(s) to the known or projected depth of contamination that show the horizontal and vertical extent of the contaminant plume in soil and groundwater, changes in lithology, existing and proposed monitoring wells, and existing and proposed injection wells. (3) Potentiometric surface map(s) indicating the rate and direction of groundwater movement, plus existing and proposed wells.
Deemed Permitted GW Remediation NOI Rev. 1-06-2021 Page 3
I. DESCRIPTION OF PROPOSED INJECTION ACTIVITIES – Provide a brief narrative regarding the purpose, scope, and goals of the proposed injection activity. This should include the rate, volume, and duration of injection over time. J. APPROVED INJECTANTS – Provide a MSDS for each injectant (attach additional sheets if necessary).
NOTE: Only injectants approved by the NC Division of Public Health, Department of Health and Human
Services can be injected. Approved injectants can be found online at http://deq.nc.gov/about/divisions/water-resources/water-resources-permits/wastewater-branch/ground-water-protection/ground-water-approved-injectants.
All other substances must be reviewed by the DHHS prior to use. Contact the UIC Program for more info (919-
807-6496).
Injectant:
Volume of injectant:
Concentration at point of injection:
Percent if in a mixture with other injectants:
Injectant:
Volume of injectant:
Concentration at point of injection:
Percent if in a mixture with other injectants:
Injectant:
Volume of injectant:
Concentration at point of injection:
Percent if in a mixture with other injectants:
K. WELL CONSTRUCTION DATA (1) Number of injection wells: 0 Proposed 3 Existing (provide GW-1s)
(2) For Proposed wells or Existing wells not having GW-1s, provide well construction details for each
injection well in a diagram or table format. A single diagram or line in a table can be used for
multiple wells with the same construction details. Well construction details shall include the
following (indicate if construction is proposed or as-built):
Deemed Permitted GW Remediation NOI Rev. 1-06-2021 Page 4
L. SCHEDULES – Briefly describe the schedule for well construction and injection activities. Air sparge and recovery wells are to be installed on 2/27-28/2023.
Two weeklong air sparge enhanced mobile multi-phase extraction (MMPE) events will be conducted after the well installation. M. MONITORING PLAN – Describe below or in separate attachment a monitoring plan to be used to determine if violations of groundwater quality standards specified in Subchapter 02L result from the injection activity. N. SIGNATURE OF APPLICANT AND PROPERTY OWNER Well Owner/Applicant: “I hereby certify, under penalty of law, that I am familiar with the information
submitted in this document and all attachments thereto and that, based on my inquiry of those individuals
immediately responsible for obtaining said information, I believe that the information is true, accurate and
complete. I am aware that there are significant penalties, including the possibility of fines and imprisonment,
for submitting false information. I agree to construct, operate, maintain, repair, and if applicable, abandon the
injection well and all related appurtenances in accordance with the 15A NCAC 02C 0200 Rules.”
Elizabeth A. Allyn, PG, Environmental Project Geologist II, WithersRavenel
On behalf on NCDEQ-DWM, UST Section for Incident #20326
Signature of Applicant Print or Type Full Name and Title
Property Owner (if the property is not owned by the Well Owner/Applicant): “As owner of the property on which the injection well(s) are to be constructed and operated, I hereby consent to
allow the applicant to construct each injection well as outlined in this application and agree that it shall be the
responsibility of the applicant to ensure that the injection well(s) conform to the Well Construction Standards
(15A NCAC 02C .0200).” “Owner” means any person who holds the fee or other property rights in the well being constructed. A well is real property and its construction on land shall be deemed to vest ownership in the land owner, in the
absence of contrary agreement in writing. SEE ATTACHED NCDEQ STATE -LEAD ACCESS AGREEMENT FOR PROPERTY
Signature* of Property Owner (if different from applicant) Print or Type Full Name and Title
*An access agreement between the applicant and property owner may be submitted in lieu of a signature on this form. Please send 1 (one) hard color copy of this NOI along with a copy on an attached CD or Flash Drive at least two (2) weeks prior to injection to: DWR – UIC Program 1636 Mail Service Center Raleigh, NC 27699-1636 Telephone: (919) 807-6464
Foothills Service Center – NCDEQ Incident #20326 WR Project # 02171214.68 Notice of Intent ‐ UIC February 2023
FIGURES
PU
M
P
I
S
L
A
N
D
EAST UNIO
N
S
T
R
E
E
T
WHITE STREETEXCAVATION 3EXCAVATION 4EXCAVATION 1EXCAVATION 2MW-1MW-3MW-2MJ
MJ
DRAWN BY:
02/12/2021 02171214.68
2
SCALE:FIGURE NO.:
PROJECT NO.:DATE:APPROVED BY:SITE MAPWithersRavenel
Engineers | Planners | Surveyors
115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340license #: F-1479 | www.withersravenel.com
1"=20 'GRAPHIC SCALE1 inch = 20 ft.0201040FORMER FOOTHILLS SERVICE CENTER312 EAST UNION STREETMORGANTON, BURKE COUNTY, NCLEGENDNOTES: 1.) 2018 AERIAL OBTAINED FROM NC ONEMAP.
GRAPHIC SCALE01 inch = 20 feet
PUMP ISLANDEXCAVATION 3
EXCAVATION 4
EXCAVATION 1
EXCAVATION 2
MW-1
MW-3
MW-2
MW-4MW-5 EAAEAADRAWN BY:02/14/202302171214.684SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:GROUNDWATER ANALYTICALRESULTS MAP(FEBRUARY 2, 2023)WithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340license #: F-1479 | www.withersravenel.com1"=20 '2010 40 FOOTHILLS SERVICE CENTERTF20326312 EAST UNION STREETMORGANTON, BURKE COUNTY, NCLEGEND
NOTES: 1.) 2018 AERIAL OBTAINED FROM NC ONE MAP.
GRAPHIC SCALE
0
1 inch = 20 feet
Foothills Service Center – NCDEQ Incident #20326 WR Project # 02171214.68 Notice of Intent ‐ UIC February 2023
WELL CONSTRUCTION TABLE
Easting Northing7/14/2020‐‐‐25.99‐‐‐74.011/20/2021‐‐‐24.96‐‐‐75.041/24/2022 (pre‐MMPE)27.6027.990.3972.341/28/2022 (post‐MMPE)‐‐‐29.62‐‐‐70.383/2/2022 27.39 27.80 0.41 72.552/2/2023 27.00 27.05 0.05 72.997/14/2020‐‐‐25.82‐‐‐73.701/20/2021‐‐‐24.61‐‐‐74.911/24/2022‐‐‐27.41‐‐‐72.113/2/2022‐‐‐27.03‐‐‐72.492/2/2023‐‐‐26.60‐‐‐72.927/14/2020‐‐‐26.34‐‐‐73.481/20/2021‐‐‐25.34‐‐‐74.481/24/2022‐‐‐28.10‐‐‐74.483/2/2022‐‐‐27.82‐‐‐72.002/2/2023‐‐‐27.35‐‐‐72.47MW‐42/2/2023 2 33 18 18‐33 99.50 2/2/2023‐‐‐27.25‐‐‐72.25‐‐‐ ‐‐‐MW‐52/2/2023 2 33 18 18‐33 98.79 2/2/2023‐‐‐26.50‐‐‐72.29‐‐‐ ‐‐‐RW‐1Proposed 4 40 25 25‐40AS‐1Proposed 2 40 35 35‐40AS‐2Proposed 2 40 35 35‐40AS‐3Proposed 2 40 35 35‐40Notes:Not Measured ‐ Well Not Installed YetNot Measured ‐ Well Not Installed YetNot Measured ‐ Well Not Installed YetNot Measured ‐ Well Not Installed Yet2) LNAPL = Light Non‐Aqueous Phase Liquid.3) Groundwater elevation adjusted for LNAPL is [Top of Casing Elevation ‐ Depth to Water] + [LNAPL Thickness * 0.8581]1203268.021203216.30 737879.647/14/2020 2 30 15 15‐30 100.00737925.2999.821203275.25 737852.2799.5215‐3015 15‐302302307/14/2020MW‐1MW‐27/14/2020TABLE B‐7312 East Union StreetMONITORING WELL CONSTRUCTION INFORMATIONWell Casing Diameter(inches)LNAPL Thickness(feet)15Foothills Service CenterIncident # 20326Depth‐to‐Water from Top‐of‐Casing(feet)Date Installed 1) Well Top of Casing (TOC) elevation based on arbitrary 100.00 ft benchmark established at TOC for MW‐1.GroundwaterElevation (feet)Well Coordinates(NC State Plane NAD 83 Feet)Date Water Level MeasuredMW‐3Morganton, Burke County, NCTotal Depth (feet)Top‐of‐Casing Elevation (feet)Well Casing Depth (feet)Monitoring Well IDScreened Interval (feet)Depth‐to‐LNAPL from Top‐of‐Casing(feet)Page 1 of 1
Foothills Service Center – NCDEQ Incident #20326 WR Project # 02171214.68 Notice of Intent ‐ UIC February 2023
ACCESS AGREEMENT
WithersRavenel
Our People. Your Success
ATTACHMENT B
FIELD NOTES
WithersRavenel
Our People. Your Success.
Foothills Service Center WR Project # 23-0307-B
Photographic Record March 2023
Frame No. 1
Description: View of the site facing south.
Frame No. 2
Description: View of MMPE operation facing north.
WithersRavenel
Our People. Your Success
ATTACHMENT C
DISPOSAL MANIFEST AND MMPE CALCULATIONS
ADVANCED
ENVIRONMENTAL SERVICES, INC.
“Your Environmental Solutions Partner”
MOBILE
MULTI-PHASE
EXTRACTION REPORT
Site Location:
Former Foothills Service Center
312 East Union Street
Morganton, North Carolina
Prepared for:
Withers Ravenel
115 MacKenan Drive
Cary, North Carolina 27511
PM – Ms. Liz Allen, PG
April 7, 2023
TABLE OF CONTENTS
EVENT SUMMARY
MMPE FIELD LOG
MASS-REMOVAL CALCULATION
FIELD NOTES
DISPOSAL MANIFEST
MOBILE MULTI-PHASE EXTRACTION
EVENT SUMMARY
April 7, 2023
Location: Former Foothills Service Center
312 East Union Street
Morganton, North Carolina
Client: Withers Ravenel
115 MacKenan Drive
Cary, North Carolina 27511
Event Dates: March 6 - 10 and March 13 - 17, 2023
Advanced Job # 03 – 2312
Advanced Personnel: Lee Heilig and Chad Widner
MMPE System: MMPE system rated 21”hg at 130 CFM
4’ discharge stack - 2” diameter
5,000 - gallon tanker
Approximately 110’of 1.5” hose to 4 wells
Extraction Well: MW-1, RW-1, MW-7 and MW-8
Air-Sparge: AS-1, AS-2 and AS-3
Well Initial FP/WL(ft) Final FP/WL(ft) Stinger depth(ft) Run Time
MW-1 26.50/26.51 28.80 29/29.5 146.5 hours
RW-1 26.55 28.01 27/29 192.0 hours
MW-7 26.61 28.02 29/30 141.0 hours
MW-8 26.61 26.95 26/28/29 141.0 hours
AS-1 26.76 28.33 n/a 94.5 hours
AS-2 26.50 29.01 n/a 94.5 hours
AS-3 26.00 29.11 n/a 94.5 hours
Description of Event:
The MMPE event ran from 12:30 March 6, through 12:30 March 10 and 11:10 March 13, through
11:10 March 17, 2023. The MMPE system was active for 192.0 hours. During the event vacuum
at the recovery pump ranged from 15.0 to 18.0 inches of mercury (hg) and stabilized at
approximately 16.0 inches of mercury. Airflow rates ranged from 3,100 to 4,000 feet per minute
and stabilized at 4,000 feet per minute. System temperature ranged from 72.0 – 119.0 degrees
(F) and humidity maintained, 99.0 percent. Field gauged volatile organic compounds (VOC’s)
decreased from 100,000 parts per-million (PPM) to 8,000 (PPM) throughout the events.
Groundwater / Product Mix Recovered:
During the event, a total of 9,121 gallons of product/water mix (two weeks) were removed from
the site and properly disposed at a certified North Carolina disposal facility. A petroleum sheen
was observed in tanker. Total fluids recovered, was measured based on stick readings conducted
during and following the event. Based on 192.0 hours of operation and a total of 9,121 gallons
recovered, the average groundwater recovery rate was calculated to be approximately 47.51
gallons per hour.
Events Results:
Based on mass-removal calculations 1,171.24 pounds or 190.39 gallons of VOC’s were
removed as vapor. Using Dwyer Magnehelic gauges, vacuum influence (inches of water) was
measured at monitoring points MW-2 and MW-8. No measurable vacuum influence was
observed at any monitoring point. Draw-down was observed in MW-2 up to 0.05 feet.
Following the event, no free product was identified in any well.
MMPE FIELD LOG:
CLIENT: Withers Ravenel
JOB NAME: Fmr. Foothills Service Center
LOCATION: Morganton, NC
MMPE EVENT DATES: March 6 - 10, 2023
EXTRACTION POINTS: MW-1, RW-1, MW-7 and MW-8 and Air-Sparge AS - 1, 2, 3
AES JOB NUMBER: 03 - 2312
DATE TIME FLOW (f/m) HUM.(%) TEMP. (F)VOC's(ppm)VAC. (hg")GALLONS STINGER/WL's EXTRACTION POINTS (hg")
MW-1 RW-1 MW-7
Stinger(ft)29,29.5 27,29 29
Start 12:30 Initial WL's 26.50/26.51 26.55 26.61
03/06/23 12:45 3,100 99.0 78 90,000 18.0 14.0 13.0 off-line
13:45 3,400 99.0 103 100,000 17.0 12.0 11.0 off-line
14:45 3,500 99.0 111 96,000 17.0 12.0 11.0 off-line
16:20 3,500 99.0 113 94,000 17.0 45 gal.9.0 7.0 off-line
03/07/23 8:00 3,700 99.0 110 78,000 16.0 750 gal.8.0 7.0 off-line
9:30 3,700 99.0 108 74,000 16.0 8.0 7.0 off-line
10:30 3,700 99.0 115 72,000 16.0 8.0 7.0 off-line
16:00 3,800 99.0 119 62,000 16.0 8.0 7.0 off-line
03/08/23 7:55 3,600 99.0 111 46,000 17.0 1,977 gal.8.0 8.0 off-line
9:00 3,600 99.0 109 44,000 17.0 8.0 8.0 off-line
10:30 3,600 99.0 105 44,000 17.0 8.0 8.0 off-line
16:00 3,400 99.0 114 40,000 17.0 off-line 7.0 8.0
03/09/23 7:50 3,600 99.0 111 32,000 16.0 2,998 gal.off-line 6.0 7.0
9:00 3,600 99.0 113 34,000 16.0 off-line 6.0 7.0
10:10 3,600 99.0 105 30,000 16.0 off-line 6.0 7.0
16:00 3,600 99.0 111 26,000 16.0 off-line 6.0 7.0
03/10/23 8:20 3,600 99.0 106 34,000 16.0 4,237 gal.off-line 6.0 7.0
10:00 3,600 99.0 109 32,000 16.0 off-line 6.0 7.0
Final WL's 29.44 27.00 28.85
End 12:30 Total fluids: 4,688 gal.
Total free product:0.0 gal.
DATE TIME STINGER/WL's EXT. POINT AIR SPARGE (CFM) VAC. INFLUENCE (h2o") WELL GAUGING (ft)
MW-8 AS-1 AS-2 AS-3 MW-2 MW-8 MW-2 MW-8 MW-1
Start 12:30 Stinger(ft)29 n/a n/a n/a
Initial WL's 26.61 26.76 26.50 26.00 26.10 26.75
03/06/23 13:45 off-line 3.0 1.5 2.0
14:45 off-line 3.0 2.0 2.0
16:20 off-line 3.5 2.0 2.0 0.00 0.00 on-line
03/07/23 8:00 off-line 3.0 1.5 2.0
9:30 off-line 2.5 1.5 2.0
10:30 off-line 2.5 1.5 2.0
16:00 off-line 2.0 1.5 2.0 0.00 0.00 26.20 26.69 on-line
03/08/23 7:55 off-line 2.0 1.5 2.0
9:00 off-line 2.0 1.5 1.5 0.00 0.00 26.29 26.61 on-line
10:30 off-line 2.0 1.5 1.5
16:00 7.0 2.5 1.5 2.0
03/09/23 7:50 7.0 1.5 1.5 2.0
9:00 7.0 1.5 1.5 2.0
10:10 7.0 1.5 1.5 1.5
16:00 7.0 1.5 1.5 2.0 0.00 on-line 26.21 on-line 26.61
03/10/23 8:20 7.0 1.5 1.5 2.0
10:00 7.0 1.5 1.5 2.0 0.00 on-line 26.15 on-line 26.66/26.85
Final WL's 25.45
End 12:30
Page 1 of 1
MOBILE MULTI-PHASE EXTRACTION EVENT
SITE NAME: FORMER FOOTHILLS SERVICE CENTER CLIENT: WITHERS RAVENEL
INCIDENT NUMBER:
AVERAGE DEPTH TO GROUNDWATER: 26 - 27 ft.
DESCRIBE SOIL IN THE SATURATED ZONE:
AVERAGE HYDRAULIC CONDUCTIVITY (if known):
EXTRACTION WELLS USED FOR MMPE: MW-1, RW-1, MW-7 & MW-8 AND AIR-SPARGE AS-1, AS-2 and AS-3
SPECIFICATIONS OF THE MMPE SYSTEM (cfm @ in Hg): 130 cfm @ 21.0"Hg
DRY STANDARD CUBIC FEET PER MINUTE (DSCFM) AIR FLOW CALCULATIONS (Qstd)
Date Hours Vacuum Velocity Pipe ID Temp Rel Humid Water Water Qstd(inches of Hg) (ft/min) (in) (°F) (%) Vapor (Wt%) Vapor (Vol%) (flow)
3/6/23 24.00 17.00 3375.00 2 101 99.0 0.038 0.057 65
3/7/23 48.00 16.00 3725.00 2 113 99.0 0.063 0.092 68
3/8/23 72.00 17.00 3550.00 2 110 99.0 0.060 0.088 65
3/9/23 96.00 16.00 3600.00 2 109 99.0 0.059 0.086 67
3/10/23
NOTES
Qstd = Flow at DSCFM
Vacuum = The level of vacuum being applied should be recorded from the MMPE system (inches of Hg)
Velocity = The rate at which air flows is measured at the blower discharge piping (anemometer or pitot tube)
Pipe ID = The inside diameter of the blower discharge piping (from the MMPE system)
Temperature = The temperature of the air stream exiting the blower discharge piping (dry bulb temp., in deg.°F)
Relative humidity = The % relative humidity of the air stream exiting the blower discharge piping
Bwsw = water vapor % by weight, i.e., pounds of water per pound of dry air, derived from the Psychrometric chart (temp Vs relative humidity)
Bws = water vapor % by volume
EQUATIONS
Bws = (Bwsw/18 lb-mole H20)/[(1/28.84 lb-mole dry air) + (Bwsw/18 lb-mole H2O)]
Qstd = (1-Water Vapor) * velocity * (PI * (diameter/24)2) * (528°R/(Temp + 460))
EMISSION CALCULATIONS
Elapsed
Time Flow PPMmeasured PPMwet PPMdry K PPMconc Cc:m Cc PMRc PMRg PMR
(hour) (DSCFM) (ppm)(#C - gas)(mg/dsm3) (lb/dscf) (lb/hour) (lb/hour) (lb)
24 65 95000 95000 100784 1 100784 50287 0.003139438 12.30 14.24 341.76
48 68 71500 71500 78717 1 78717 39277 0.002452054 10.01 11.58 277.95
72 65 43500 43500 47682 1 47682 23791 0.001485296 5.83 6.75 162.01
96 67 31333 31333 34295 1 34295 17112 0.001068293 4.27 4.94 118.54
Total emissions in pounds 900.26
Total emissions as gallons (pounds / 6.152)146.34
NOTES
PPMmeasured = Actual measurements (ppm) taken with a OVA or TVA at the blower discharge piping
PPMwet = "wet" concentration
PPMdry = "dry" concentration
K = Number of carbons in calibration gas: (Methane K = 1, or Propane K = 3, or Hexane K = 6)
PPMc= PPMv, Volumetric concentration of VOC emissions as carbon, dry basis at STP
Cc:m = mg/dsm3, mass concentration of VOC emissions as carbon
Mc = 12.01 mg/mg-mole, molecular weight of carbon
K3 = 24.07 dsm3/106 mg-mole, mass to volume conversion factor at STP
Cc = lb/dcsf, mass concentration of VOC emissions as carbon, dry basis at STP
PMRc = lb/hr, pollutant mass removal rate of VOC's as carbon
PMRg = lb/hr, pollutant mass removal rate of of VOC's as gasoline
PMR = lb, pollutant mass removal of VOC's as gasoline
EQUATIONS
PPMwet = PPMmeasuredPPMdry = (PPMwet)/(1-Bws)
PPMc = (PPMd)(K)
Cc:m = (PPMc)(Mc / K3)
Cc = (Cc:m)(62.43x10-9 lb-m3/mg-ft3)
PMRc = (Cc)(Qstd)(60 minute/hour)
PMRg = (PMRc)(Mg/Mcg)
PMR = (PMRg)(#hours)
MMPE FIELD LOG:
CLIENT: Withers Ravenel
JOB NAME: Fmr. Foothills Service Center
LOCATION: Morganton, NC
MMPE EVENT DATES: March 13 - 17, 2023
EXTRACTION POINTS: MW-1, RW-1, MW-7 and MW-8 and Air-Sparge AS - 1, 2, 3
AES JOB NUMBER: 03 - 2312
DATE TIME FLOW (f/m) HUM.(%) TEMP. (F)VOC's(ppm)VAC. (hg")GALLONS STINGER/WL's EXTRACTION POINTS (hg")
MW-1 RW-1 MW-7
Stinger(ft)29,29.5 27 29,30
Start 11:10 Initial WL's 26.40/26.50 26.50/26.60 26.70
03/13/23 11:20 3,400 99.0 72 26,000 18.0 7.0 6.0 10.0
12:30 3,500 99.0 88 28,000 17.0 7.0 6.0 8.0
13:30 3,800 99.0 102 26,000 16.0 7.0 6.0 7.0
15:30 3,800 99.0 111 24,000 16.0 150 gal.7.0 6.0 6.0
03/14/23 8:10 4,000 99.0 104 19,000 15.0 640 gal.7.0 6.0 6.0
9:15 4,000 99.0 108 17,000 15.0 7.0 6.0 6.0
10:45 4,000 99.0 107 16,000 15.0 7.0 6.0 6.0
16:00 4,000 99.0 114 18,000 15.0 7.0 6.0 6.0
03/15/23 8:00 4,000 99.0 104 14,000 15.0 1,791 gal.7.0 6.0 6.0
9:05 4,000 99.0 99 15,000 15.0 7.0 6.0 6.0
10:15 4,000 99.0 103 13,000 15.0 7.0 6.0 6.0
16:00 4,000 99.0 117 11,000 15.0 7.0 6.0 6.0
03/16/23 8:05 4,000 99.0 107 9,000 15.0 2,809 gal.7.0 6.0 6.0
9:15 4,000 99.0 97 10,000 15.0 7.0 6.0 6.0
10:15 4,000 99.0 101 10,000 15.0 7.0 6.0 6.0
16:00 4,000 99.0 118 11,000 15.0 7.0 6.0 6.0
03/17/23 8:15 4,000 99.0 108 8,000 15.0 4,010 gal.7.0 6.0 6.0
9:30 4,000 99.0 110 8,000 15.0 7.0 6.0 6.0
Final WL's 28.80 28.01 28.02
End 11:10 Total fluids: 4,433 gal.
Total free product:sheen
DATE TIME STINGER/WL's EXT. POINT AIR SPARGE (CFM) VAC. INFLUENCE (h2o") WELL GAUGING (ft)
MW-8 AS-1 AS-2 AS-3 MW-2 MW-2
Start 11:10 Stinger(ft)26,28 n/a n/a n/a
Initial WL's 25.70 26.76 26.50 26.00 26.05
03/13/23 11:20 7.0 off off off
12:30 6.0 1.5 1.5 2.0
13:30 6.0 1.5 1.5 2.0 0.00
15:30 6.0 1.5 2.0 2.0
03/14/23 8:10 6.0 1.5 2.0 1.5
9:15 6.0 1.5 1.5 1.5
10:30 6.0 1.5 2.0 1.5
16:00 6.0 1.5 2.0 1.5 0.00 26.15
03/15/23 8:00 6.0 1.5 2.0 1.5
9:05 6.0 1.5 2.0 1.5
10:15 6.0 1.5 2.0 1.5 0.00 26.20
16:00 6.0 1.5 2.0 1.5
03/16/23 8:05 6.0 1.5 2.0 1.5
9:15 6.0 1.5 2.0 1.5
10:15 6.0 1.5 2.0 1.5
16:00 6.0 1.5 2.0 1.5 0.00 26.13
03/17/23 8:15 6.0 1.5 2.0 1.5
9:30 6.0 1.5 2.0 1.5 0.00 26.04
Final WL's 26.95 28.33 29.01 29.11
End 11:10
Page 1 of 1
MOBILE MULTI-PHASE EXTRACTION EVENT
SITE NAME: FORMER FOOTHILLS SERVICE CENTER CLIENT: WITHERS RAVENEL
INCIDENT NUMBER:
AVERAGE DEPTH TO GROUNDWATER: 26 - 27 ft.
DESCRIBE SOIL IN THE SATURATED ZONE:
AVERAGE HYDRAULIC CONDUCTIVITY (if known):
EXTRACTION WELLS USED FOR MMPE: MW-1, RW-1, MW-7, MW-8 AND AIR-SPARGE AS-1, AS-2 and AS-3
SPECIFICATIONS OF THE MMPE SYSTEM (cfm @ in Hg): 130 cfm @ 21.0"Hg
DRY STANDARD CUBIC FEET PER MINUTE (DSCFM) AIR FLOW CALCULATIONS (Qstd)
Date Hours Vacuum Velocity Pipe ID Temp Rel Humid Water Water Qstd(inches of Hg) (ft/min) (in) (°F) (%) Vapor (Wt%) Vapor (Vol%) (flow)
3/13/23 24.00 17.00 3625.00 2 93 99.0 0.029 0.044 72
3/14/23 48.00 15.00 4000.00 2 108 99.0 0.056 0.082 74
3/15/23 72.00 15.00 4000.00 2 106 99.0 0.053 0.078 75
3/16/23 96.00 15.00 4000.00 2 107 99.0 0.055 0.081 75
3/17/23
NOTES
Qstd = Flow at DSCFM
Vacuum = The level of vacuum being applied should be recorded from the MMPE system (inches of Hg)
Velocity = The rate at which air flows is measured at the blower discharge piping (anemometer or pitot tube)
Pipe ID = The inside diameter of the blower discharge piping (from the MMPE system)
Temperature = The temperature of the air stream exiting the blower discharge piping (dry bulb temp., in deg.°F)
Relative humidity = The % relative humidity of the air stream exiting the blower discharge piping
Bwsw = water vapor % by weight, i.e., pounds of water per pound of dry air, derived from the Psychrometric chart (temp Vs relative humidity)
Bws = water vapor % by volume
EQUATIONS
Bws = (Bwsw/18 lb-mole H20)/[(1/28.84 lb-mole dry air) + (Bwsw/18 lb-mole H2O)]
Qstd = (1-Water Vapor) * velocity * (PI * (diameter/24)2) * (528°R/(Temp + 460))
EMISSION CALCULATIONS
Elapsed
Time Flow PPMmeasured PPMwet PPMdry K PPMconc Cc:m Cc PMRc PMRg PMR
(hour) (DSCFM) (ppm)(#C - gas)(mg/dsm3) (lb/dscf) (lb/hour) (lb/hour) (lb)
24 72 26000 26000 27208 1 27208 13576 0.000847536 3.67 4.25 101.92
48 74 17500 17500 19070 1 19070 9515 0.000594039 2.65 3.07 73.70
72 75 13250 13250 14375 1 14375 7173 0.000447789 2.02 2.33 55.99
96 75 9333 9333 10155 1 10155 5067 0.000316344 1.42 1.64 39.37
Total emissions in pounds 270.98
Total emissions as gallons (pounds / 6.152)44.05
NOTES
PPMmeasured = Actual measurements (ppm) taken with a OVA or TVA at the blower discharge piping
PPMwet = "wet" concentration
PPMdry = "dry" concentration
K = Number of carbons in calibration gas: (Methane K = 1, or Propane K = 3, or Hexane K = 6)
PPMc= PPMv, Volumetric concentration of VOC emissions as carbon, dry basis at STP
Cc:m = mg/dsm3, mass concentration of VOC emissions as carbon
Mc = 12.01 mg/mg-mole, molecular weight of carbon
K3 = 24.07 dsm3/106 mg-mole, mass to volume conversion factor at STP
Cc = lb/dcsf, mass concentration of VOC emissions as carbon, dry basis at STP
PMRc = lb/hr, pollutant mass removal rate of VOC's as carbon
PMRg = lb/hr, pollutant mass removal rate of of VOC's as gasoline
PMR = lb, pollutant mass removal of VOC's as gasoline
EQUATIONS
PPMwet = PPMmeasuredPPMdry = (PPMwet)/(1-Bws)
PPMc = (PPMd)(K)
Cc:m = (PPMc)(Mc / K3)
Cc = (Cc:m)(62.43x10-9 lb-m3/mg-ft3)
PMRc = (Cc)(Qstd)(60 minute/hour)
PMRg = (PMRc)(Mg/Mcg)
PMR = (PMRg)(#hours)