# ROSE ROCK MIDSTREAM OPERATING, LLC — Notice of Amendment

**Citation:** CPF 320115007M  
**Type / status:** enforcement / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2011-06-09

CLOSED notice of amendment citing 195.402(a).

## Document text

Notice of Amendment involving ROSE ROCK MIDSTREAM OPERATING, LLC. PHMSA's enforcement data identifies the cited regulation as 195.402(a). The case was opened on 2011-06-09 and is reported as closed as of 2012-01-03. Open the official case record for notices, responses, orders, and the latest status.

Official case documents:

320115007M_Closure Letter_01032012.pdf: https://primis.phmsa.dot.gov/enforcement-documents/320115007M/320115007M_Closure%20Letter_01032012.pdf

320115007M_Closure Letter_01032012_text.pdf: https://primis.phmsa.dot.gov/enforcement-documents/320115007M/320115007M_Closure%20Letter_01032012_text.pdf

320115007M_NOA_06092011.pdf: https://primis.phmsa.dot.gov/enforcement-documents/320115007M/320115007M_NOA_06092011.pdf

320115007M_NOA_06092011_text.pdf: https://primis.phmsa.dot.gov/enforcement-documents/320115007M/320115007M_NOA_06092011_text.pdf

320115007M_Operator Response_09152011.pdf: https://primis.phmsa.dot.gov/enforcement-documents/320115007M/320115007M_Operator%20Response_09152011.pdf

320115007M_Closure Letter_01032012_text.pdf

CERTIFIED MAIL - RETURN RECEIPT REQUESTED
January 3, 2012
Mr. Peter Schwiering
President
SemGroup LP
11501 South I-44 Service Rd.
Oklahoma, City, OK 73173
CPF 3-2011-5007M
Dear Mr. Schwiering:
On March 1-3, 2011, representatives of the Western, Southwestern and Central offices of the
Pipeline and Hazardous Materials Safety Administration (PHMSA) pursuant to Chapter 601
of 49 United States Code inspected the operation and maintenance procedures for SemGroup
LP at your offices in Oklahoma City, OK. This review also covered the procedures for
SemStream and White Cliffs Pipeline LLC. As a result of the inspection, SemGroup LP was
issued a Notice of Amendment on June 9, 2011, which proposed amendment of your
procedures.
SemGroup LP submitted its amended procedures on September 15, 2011. My staff reviewed
the amended procedures, and it appears that the inadequacies outlined in this Notice of
Amendment have been corrected.
This letter is to inform you no further action is necessary and this case is now closed. Thank
you for your cooperation.
Sincerely,
David Barrett
Director, Central Region
Pipeline and Hazardous Materials Safety Administration

## Provenance

- Official: Yes
- Source: <https://primis.phmsa.dot.gov/enforcement-data/case/320115007M>
- Source ID: `phmsa-enforcement`
- SHA-256: `64a35d645074a288a386017b38d99bbf95c3cb34b6f423d4fdd0888e78a5718f`
- Retrieved: 2026-08-20T04:44:44.458Z
- Exported: 2026-08-24T21:05:28.706Z
- Document slug: `phmsa-enforcement-320115007m`

### Source metadata

```json
{
  "cpf": "320115007M",
  "operator": "ROSE ROCK MIDSTREAM OPERATING, LLC",
  "region": "Central",
  "pipelineType": "INTERSTATE LIQUID ONSHORE",
  "caseStatus": "CLOSED",
  "citedSections": [
    "195.402(a)"
  ],
  "dataAsOf": "08/04/2026 12PM",
  "caseDataAsOf": "2026-08-04",
  "attachmentCount": 5,
  "attachments": [
    {
      "name": "320115007M_Closure Letter_01032012.pdf",
      "url": "https://primis.phmsa.dot.gov/enforcement-documents/320115007M/320115007M_Closure%20Letter_01032012.pdf",
      "bytes": 55868,
      "category": "agency_document"
    },
    {
      "name": "320115007M_Closure Letter_01032012_text.pdf",
      "url": "https://primis.phmsa.dot.gov/enforcement-documents/320115007M/320115007M_Closure%20Letter_01032012_text.pdf",
      "bytes": 9571,
      "category": "agency_document"
    },
    {
      "name": "320115007M_NOA_06092011.pdf",
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      "bytes": 1309463,
      "category": "case_document"
    },
    {
      "name": "320115007M_NOA_06092011_text.pdf",
      "url": "https://primis.phmsa.dot.gov/enforcement-documents/320115007M/320115007M_NOA_06092011_text.pdf",
      "bytes": 39930,
      "category": "case_document"
    },
    {
      "name": "320115007M_Operator Response_09152011.pdf",
      "url": "https://primis.phmsa.dot.gov/enforcement-documents/320115007M/320115007M_Operator%20Response_09152011.pdf",
      "bytes": 2488482,
      "category": "party_submission"
    }
  ],
  "extractedAgencyDocumentCount": 1,
  "attachmentPolicy": "Official attachment links are retained. Agency-issued documents may also include a verified local PDF and page-level text representation.",
  "jurisdiction": "US",
  "operatorName": "ROSE ROCK MIDSTREAM OPERATING, LLC"
}
```