WQ0036676_Staff Report_20230515

;s State of North Carolina
Division of Water Resources
Water Quality Regional Operations Section
Environmental Staff Report
Quality
To: ❑ NPDES Unit ® Non -Discharge Unit
Attn: [e-mail]
From: [e-mail]
Mooresville Regional Office
Application No.: WQ0036676
Facility name: Blue DOT Readi-Mix, Exchange Street
County: Mecklenburg
Note: This form has been adapted from the non -discharge facilily staff report to document the review of both non -
discharge and NPDES permit applications and/or renewals. Please complete all sections as they are applicable.
I. GENERAL AND SITE VISIT INFORMATION
1. Was a site visit conducted? ® Yes or ❑ No
a. Date of site visit: 5-1-2023
b. Site visit conducted by: Maria Schutte
c. Inspection report attached? ❑ Yes or ® No BIMS to be updated, relevant information is included in
this staffMport.
d. Person contacted: Seth Girouard and their contact information: (704) 247 - 4787 ext. and
sgirouard&bluedo tre adimix.com.
e. Driving directions: From I-77 South take exit 13B to I-85 South, Take the Glenwood Dr. (exit 35), turn Right,
turn right onto S. Hoskins Rd., a sharp left onto Hovis Rd, Left onto Bealer Rd, & Right onto Exchange St. The
facility is on the Right.
2. Discharge Point(s): NA
Latitude: Longitude:
Latitude: Longitude:
3. Receiving stream or affected surface waters: NA
Classification:
River Basin and Sub -basin No.
Describe receiving stream features and pertinent downstream uses:
IL PROPOSED FACILITIES: NEW APPLICATIONS
1. Facility Classification: (Please attach completed rating sheet to be attached to issued permit)
Proposed flow:
Current permitted flow:
2. Are the new treatment facilities adequate for the type of waste and disposal system? ❑ Yes or ❑ No
If no, explain:
3. Are site conditions (soils, depth to water table, etc.) consistent with the submitted reports? ❑ Yes ❑ No ❑ N/A
If no, please explain:
4. Do the plans and site map represent the actual site (property lines, wells, etc.)? ❑ Yes ❑ No ❑ N/A
If no, please explain:
FORM: WQROSSR 04-14 Page 1 of 5

5. Is the proposed residuals management plan adequate? ❑ Yes ❑ No ❑ N/A
If no, please explain:
6. Are the proposed application rates (e.g., hydraulic, nutrient) acceptable? ❑ Yes ❑ No ❑ N/A
If no, please explain:
7. Are there any setback conflicts for proposed treatment, storage and disposal sites? ❑ Yes or ❑ No
If yes, attach a map showing conflict areas.
8. Is the proposed or existing groundwater monitoring program adequate? ❑ Yes ❑ No ❑ N/A
If no, explain and recommend any changes to the groundwater monitoring program:
9. For residuals, will seasonal or other restrictions be required? ❑ Yes ❑ No ❑ N/A
If yes, attach list of sites with restrictions (Certification B)
Describe the residuals handling and utilization scheme:
10. Possible toxic impacts to surface waters:
11. Pretreatment Program (POTWs only):
III. EXISTING FACILITIES: MODIFICATION AND RENEWAL APPLICATIONS
1. Are there appropriately certified Operators in Charge (ORCs) for the facility? ❑ Yes ❑ No ® N/A
ORC: Certificate #: Backup ORC: Certificate #:
2. Are the design, maintenance and operation of the treatment facilities adequate for the type of waste and disposal
system? ® Yes or ❑ No
If no, please explain:
Description of existing facilities: This is a truck wash recycleystem for a concrete company. Water is rec, cy led
for use in the process and residual concrete is captured and periodically hauled off -site by a contractor for disposal
or re -use.
Proposed flow: Per MRO staff request, current daily, average is estimated at 23.100 alg s/da(22 onsite trucks at 3
loads each per dgy). See attachment in Section V.
Current permitted flow: 21,000 alg s/day.
Explain anything observed during the site visit that needs to be addressed by the permit, or that may be important
for the permit writer to know (i.e., equipment condition, function, maintenance, a change in facility ownership,
etc.)
3. Are the site conditions (e.g., soils, topography, depth to water table, etc.) maintained appropriately and adequately
assimilating the waste? ❑ Yes or ❑ No ® N/A
If no, please explain: This question does not apply to this permit. The facility maintains a recycleystem, but
there is no application/assimilation of waste.
4. Has the site changed in any way that may affect the permit (e.g., drainage added, new wells inside the compliance
boundary, new development, etc.)? ❑ Yes or ® No
If yes, please explain: There are two Blue Dot Ready Mix Recycle Permits in the MRO. Both appear much busier
now than when initially permitted. Logs at this facili . range from zero truckloads/day to 169 truckloads/day-
noted in July 2022.
5. Is the residuals management plan adequate? ® Yes or ❑ No
If no, please explain: NA- Spent concrete is hauled on an as needed basis.
6. Are the existing application rates (e.g., hydraulic, nutrient) still acceptable? ❑ Yes or ❑ No
If no, please explain: Not Applicable — there is no land application.
7. Is the existing groundwater monitoring program adequate? ❑ Yes ❑ No ® N/A
If no, explain and recommend any changes to the groundwater monitoring program:
8. Are there any setback conflicts for existing treatment, storage and disposal sites? ❑ Yes or ® No
If yes, attach a map showing conflict areas.
FORM: WQROSSR 04-14 Page 2 of 5

9. Is the description of the facilities as written in the existing permit correct? ❑ Yes or ® No
If no, please explain: See item IIL2. for slight flow change and Section V. for repairs / upgrades: new filter press
and an automated truck wash. The auto truck wash is technically not a part of the recycleystem, but likely
creates a more consistent flow into the system.
10. Were monitoring wells properly constructed and located? ❑ Yes ❑ No ® N/A
If no, please explain:
11. Are the monitoring well coordinates correct in BIMS? ❑ Yes ❑ No ® N/A
If no, please complete the following (expand table if necessary):
Monitoring Well
Latitude
Longitude
C
C
C
C
C I II
C I II
12. Has a review of all self -monitoring data been conducted (e.g., DMR, NDMR, NDAR, GW)? ❑ Yes or ❑ No
Please summarize any findings resulting from this review:
Provide input to help the permit writer evaluate any requests for reduced monitoring, if applicable.
13. Are there any permit changes needed in order to address ongoing BIMS violations? ❑ Yes or ® No
If yes, please explain:
14. Check all that apply:
® No compliance issues ❑ Current enforcement action(s) ❑ Currently under JOC
❑ Notice(s) of violation ❑ Currently under SOC ❑ Currently under moratorium
Please explain and attach any documents that may help clarify answer/comments (i.e., NOV, NOD, etc.)
If the facility has had compliance problems during the permit cycle, please explain the status. Has the RO been
working with the Permittee? Is a solution underway or in place?
Have all compliance dates/conditions in the existing permit been satisfied? ® Yes ❑ No ❑ N/A
If no, please explain:
15. Are there any issues related to compliance/enforcement that should be resolved before issuing this permit?
❑ Yes® No ❑ N/A
If yes, please explain:
16. Possible toxic impacts to surface waters:
17. Pretreatment Program (POTWs only):
IV. REGIONAL OFFICE RECOMMENDATIONS
1. Do you foresee any problems with issuance/renewal of this permit? ❑ Yes or ® No
If yes, please explain:
2. List any items that you would like the NPDES Unit or Non -Discharge Unit Central Office to obtain through an
additional information request:
Item Reason
FORM: WQROSSR 04-14 Page 3 of 5

3. List specific permit conditions recommended to be removed from the permit when issued:
Condition
Reason
Question for CO
Are the two Blue Dot Readi Mix, recycle permits in this region necessary? Per
past conversations with staff at another RO, similar permits went away in their
region (Captured under an existing stormwater permit?).
And, if they are needed, should there be more of them? There are many
concrete facilities in the area and we only have these two permits.
4. List specific special conditions or compliance schedules recommended to be included in the permit when issued:
Condition Reason
5. Recommendation: ❑ Hold, pending receipt and review of additional information by regional office
❑ Hold, pending review of draft permit by regional office
❑ Issue upon receipt of needed additional information
® Issue
❑ Deny (Please state reasons: )
6. Signature of report preparer: Maria Schutte May 12t1'. 2023
,,—DocuSigned by:
Signature of regional supervisor:
Date: 5/15 2023 �'-F161FB69A2D84A3...
FORM: WQROSSR 04-14 Page 4 of 5

V. ADDITIONAL REGIONAL STAFF REVIEW ITEMS
WQ0036676_202305
04 Email and Addit
FORM: WQROSSR 04-14 Page 5 of 5