PENAL CODE 和CITY CODE的关系. 请教老猫和各位懂精通法律的大佬

STATE PENAL CODE和CITY CODE之间有什么关系啊? 如果它们之间有冲突.应该以那个为准呢?
MAKE THE LONG STORY SHORT. 我问这个问题的背景是.
我邻居贴着我家后院的FENCE转了个SWIMMING POOL FILTER AND PUMP SYSTEM. 每天开8小时.又时候还24小时. 我找了警察叔叔来,他用METER测了噪音是76.1 DB.
但是他引用TX STATE PENAL CODE UNDER § 42.01. Disorderly Conduct里这么一条:
a noise is presumed to be unreasonable if the noise exceeds a decibel level of 85 after the person making the noise receives notice from a magistrate or peace officer that the noise is a public nuisance.
判定76.1 DECIBEL没有超过85.所以他们的PUMP不能算是NOISE NUISANCE.所以他们警察管不了. 这是一个CIVIL CASE. 我只有上法庭去解决.
但是在CITY CODE里UNDER Sec. 23-8. Noise.
(a) Definitions.
Unreasonable noise shall mean:
(1) Any unreasonably loud, disturbing, and unnecessary noise which causes material distress, discomfort or injury to persons of ordinary sensibilities in the immediate vicinity thereof; or
(2) Any noise of such character, intensity and continued duration, which substantially interferes with the comfortable enjoyment of private homes by persons of ordinary sensibilities.
我认为这个PUMP噪音已经符合NOISE的DEFINITION.只是这里没有明确规定的DECIBEL LEVEL.警察叔叔最开始也同意我说的.可是后来就是因为那个85 DB而又改变了主意.
我现在正在寻找律师准备打官司.
我的问题就是如果警察叔叔根据STATE PENAL CODE规定的85 DB为最大噪音限度而RULLING,那如果我上法庭.那法庭不是同样会以这个PANAL CODE而判我输.那我打官司不就白打了啊?
所以请老猫和各位懂法的大侠帮我解释下.以让我知道我应该正确怎样做.
多谢多谢.

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