Section 105.81. Permit applications for construction and modification of dams and reservoirs

(a) In addition to the information required under § § 105.13, 105.13a, 105.13b and 105.15, permit applications under this subchapter for the construction or modification of dams and reservoirs must provide the following information:

(1) Reports and data detailing the conduct and results of investigations and tests necessary to determine the safety, adequacy and suitability of design, including:

(i) Data concerning subsoil and rock foundation conditions.

(ii) Data concerning exploratory pits, drilling, coring and tests to determine seepage rates.

(iii) Data concerning the strength tests necessary to measure the physical properties and behavior of foundations and embankment materials at the dam or reservoir site.

(iv) Data concerning the geology of the dam site or reservoir area, indicating possible hazards such as faults, weak seams and joints.

(v) Data concerning availability and quality of construction materials.

(vi) A ‘‘Dam Stability Report’’ as required under § 105.97 (relating to stability of structures).

(vii) Other information as may be necessary to determine the safety, adequacy and suitability of the design, including the design calculations for the dam, which shall be made available to the Department on request.

(2) Site plan and cross sectional views required under § 105.13(d)(1)(i) (relating to permit applications-information and fees).

(3) Construction plans, specifications and design reports to evaluate the safety, adequacy and suitability of the proposed dam, reservoir and appurtenant works in order to determine compliance with this chapter.

(4) A schedule indicating proposed commencement and completion dates for construction.

(5) For projects involving storage of fluids or semifluids other than water, information concerning the chemical content, viscosity and other pertinent physical characteristics of the fluid or semifluid impounded.

(6) An instrumentation plan including justification and design for the installation of permanent monitoring instruments to measure the performance of the dam. If no instrumentation is considered necessary, justification shall be provided.

(7) A hydrologic and hydraulic analysis, submitted as a separate report, which includes:

(i) The size, shape and characteristics of the drainage basin.

(ii) Current precipitation data and precipitation distribution information as required by the Department.

(iii) Streamflow records.

(iv) Flood flow records and estimates.

(v) An incremental dam breach analysis, storage capacity and reservoir surface area for normal pool and maximum storage elevations.

(vi) Other hydrologic and hydraulic determinations necessary for the design and operation of the dam.

(8) For existing dams, copies of the structure’s most recent inspection reports.

(9) EAP if required under § 105.134 (relating to EAP).

(10) Proof of title or adequate flowage easements for land area below the top of the dam elevation that is subject to inundation.

(11) An Operation and Maintenance Manual for the dam as required under § 105.131 (relating to operation, maintenance and monitoring).

(12) Other information the Department may require.

(b) The Department may waive specific information requirements of this section in writing, if the Department finds that specific information is not necessary to review the application.

The provisions of this § 105.81 adopted September 10, 1971, effective September 11, 1971, 1 Pa.B. 1804; amended August 11, 1978, effective August 12, 1978, 8 Pa.B. 2229; amended September 26, 1980, effective September 27, 1980, 10 Pa.B. 3843; amended January 7, 2011, effective January 8, 2011, 41 Pa.B. 219. Immediately preceding text appears at serial pages (207715) to (207716).

Notation

Authority

The provisions of this § 105.81 amended under section 5 of the Dam Safety and Encroachments Act (32 P. S. § 693.5).

Cross References

This section cited in 25 Pa. Code § 105.88 (relating to dam permit issuance).